Mitarbeiter

M. Sc. Fabian Lurz

Kontakt

  • E-Mail:
  • Telefon: 09131/85-27201
  • Fax: Neu:09131/85-28730
  • Raum: 01.190
  • Neu: Wetterkreuz 15
    91058 Erlangen

Über Fabian Lurz

Lebenslauf

Fabian Lurz schloss sein Masterstudium der Informations- und Kommunikationstechnik (Schwerpunkt Realisierung von IuK-Systemen) im Juni 2013 mit Auszeichnung ab. Seit September 2013 arbeitet er als wissenschaftlicher Mitarbeiter am Lehrstuhl für Technische Elektronik und leitet seit Juni 2017 die Forschungsgruppe "Electronic Systems". Seine Forschungsschwerpunkte liegen im Bereich des System- und Schaltungsdesigns sowie der Signalverarbeitung, insbesondere für drahtlose SAW-Sensorik und Low-Power Radarsysteme.

Arbeitsgebiet

  • Analoge und digitale Schaltungstechnik
  • System- und Schaltungsdesign für Sechstor- und Radarsysteme
  • Drahtlose SAW Sensorik
  • Ultra-Low-Power-Elektronik
  • Hardwarenahe Signalverarbeitung

Abschlussarbeiten

Aus unseren Forschungsprojekten ergeben sich stets interesannte Themen für Abschlussarbeiten (Bachelor / Master) oder Forschungspraktika in den Bereichen Systemdesign, Schaltungstechnik (analog / digital) sowie Signalverarbeitung. Aktuelle Themen sind im StudOn ausgeschrieben. Für weitere Informationen einfach unverbindlich vorbeikommen, eMail schreiben oder anrufen!

Preise & Auszeichnungen

  • F. Lurz, Best Oral Talk Prize, Surface Acoustic Wave Sensor & Actuator Symposium (SAW Symposium 2018), 2018. [Bibtex]
    @prize{lurz_prize_2018,
    abstract = {Best Oral Talk Prize for the talk: "Reader Concept for Wireless Resonant Surface Acoustic Wave Instrumentation based on Instantaneous Frequency Measurement"},
    author = {Lurz, Fabian},
    booktitle = {Surface Acoustic Wave Sensor & Actuator Symposium (SAW Symposium 2018)},
    cris = {lurz_prize_2018},
    year = {2018},
    month = {10},
    day = {02},
    title = {Best Oral Talk Prize},
    type = {20773-Kleiner Preis},
    }
  • F. Michler, B. Scheiner, and F. Lurz, IEEE MTT-S International Microwave Symposium Student Design Competition First Place Award for "High-Sensitivity Fast-Response Motion Sensing Radar", IEEE Microwave Theory and Techniques Society (MTT-S), 2018. [Bibtex]
    @prize{michler_prize_2018a,
    author = {Michler, Fabian and Scheiner, Benedict and Lurz, Fabian},
    booktitle = {IEEE Microwave Theory and Techniques Society (MTT-S)},
    cris = {michler_prize_2018a},
    year = {2018},
    month = {06},
    day = {12},
    title = {IEEE MTT-S International Microwave Symposium Student Design Competition First Place Award for "High-Sensitivity Fast-Response Motion Sensing Radar"},
    type = {20773-Kleiner Preis},
    }
  • A. Koelpin, F. Lurz, S. Linz, S. Mann, C. Will, and S. Lindner, Preis der ITG 2017, Informationstechnische Gesellschaft im VDE (ITG), 2017. [Bibtex]
    @prize{koelpin_prize_2017,
    abstract = {Preis der ITG 2017 für die Publikation „Six-Port Based Interferometry for Precise Radar and Sensing Applications“},
    author = {Koelpin, Alexander and Lurz, Fabian and Linz, Sarah and Mann, Sebastian and Will, Christoph and Lindner, Stefan},
    booktitle = {Informationstechnische Gesellschaft im VDE (ITG)},
    cris = {koelpin_prize_2017},
    year = {2017},
    month = {11},
    day = {27},
    title = {Preis der ITG 2017},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz, F. Michler, and B. Scheiner, IEEE MTT-S International Microwave Symposium Student Design Competition First Place Award for "High-Sensitivity Fast-Response Motion Sensing Radar", IEEE Microwave Theory and Techniques Society (MTT-S), 2017. [Bibtex]
    @prize{lurz_prize_2017,
    author = {Lurz, Fabian and Michler, Fabian and Scheiner, Benedict},
    booktitle = {IEEE Microwave Theory and Techniques Society (MTT-S)},
    cris = {lurz_prize_2017},
    year = {2017},
    month = {06},
    day = {08},
    title = {IEEE MTT-S International Microwave Symposium Student Design Competition First Place Award for "High-Sensitivity Fast-Response Motion Sensing Radar"},
    type = {20773-Kleiner Preis},
    }
  • C. Will, S. Linz, S. Mann, F. Lurz, S. Lindner, R. Weigel, and A. Koelpin, Second Prize Student Paper Competition, IEEE Radio and Wireless Week, 2017. [Bibtex]
    @prize{will_prize2017,
    abstract = {For the paper "Segmental Polynomial Approximation based phase error correction for precise near field displacement measurements using six-port microwave interferometers},
    author = {Will, Christoph and Linz, Sarah and Mann, Sebastian and Lurz, Fabian and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Radio and Wireless Week},
    cris = {will_prize2017},
    year = {2017},
    month = {01},
    day = {18},
    title = {Second Prize Student Paper Competition},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz and C. Dorn, Texas Instruments Innovation Challenge (TIIC) – Europe Design Contest - First Round Winners, Texas Instruments, 2016. [Bibtex]
    @prize{lurz_prize_2016a,
    abstract = {First round winner (Top 7 in the industrial category) of the "Texas Instruments Innovation Challenge (TIIC) – Europe Design Contest" with the project entitled: "Enabling smart factories by MSP432: Virtual simultaneous sampling for industrial process monitoring".},
    author = {Lurz, Fabian and Dorn, Christian},
    booktitle = {Texas Instruments},
    cris = {lurz_prize_2016a},
    year = {2016},
    month = {11},
    day = {10},
    title = {Texas Instruments Innovation Challenge (TIIC) – Europe Design Contest - First Round Winners},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz, IEEE MTT-S Graduate Fellowship Award, IEEE Microwave Theory and Techniques Society (MTT-S), 2016. [Bibtex]
    @prize{lurz_prize_2016,
    abstract = {The IEEE MTT-S Graduate Fellowship Award is the highest honor that the IEEE Microwave Theory and Techniques Society (MTT-S) gives to top graduate students recognizing their research activities and promise in microwave engineering.},
    author = {Lurz, Fabian},
    booktitle = {IEEE Microwave Theory and Techniques Society (MTT-S)},
    cris = {lurz_prize_2016},
    year = {2016},
    month = {05},
    day = {21},
    title = {IEEE MTT-S Graduate Fellowship Award},
    type = {20773-Kleiner Preis},
    }
  • C. Will, F. Lurz, K. Shi, R. Weigel, and A. Koelpin, Excellent Demo Track Presentation, Radio and Wireless Week, 2016. [Bibtex]
    @prize{will_prize_2016,
    abstract = {For an exemplary demonstration of: Android-based Real Time Heartbeat Detection Using a Microwave Radar},
    author = {Will, Christoph and Lurz, Fabian and Shi, Kilin and Weigel, Robert and Koelpin, Alexander},
    booktitle = {Radio and Wireless Week},
    cris = {will_prize_2016},
    year = {2016},
    month = {01},
    day = {25},
    title = {Excellent Demo Track Presentation},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz, Fritz und Maria Hofmann-Preis 2015, Technische Fakultät der Friedrich-Alexander-Universität Erlangen-Nürnberg, 2015. [Bibtex]
    @prize{lurz_prize_2015a,
    abstract = {Die Fritz und Maria Hofmann Stiftung ist eine Stiftung zur Förderung von Lehre und Forschung an Friedrich-Alexander Universität Erlangen-Nürnberg. Der Fritz und Maria Hofmann-Preis wird jährlich an je einen Kandidaten sämtlicher Fakultäten der Universität für eine hervorragende wissenschaftliche Abschlussarbeit vergeben.},
    author = {Lurz, Fabian},
    booktitle = {Technische Fakultät der Friedrich-Alexander-Universität Erlangen-Nürnberg},
    cris = {lurz_prize_2015a},
    year = {2015},
    month = {07},
    day = {03},
    title = {Fritz und Maria Hofmann-Preis 2015},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz, S. Mann, S. Linz, S. Lindner, R. Weigel, and A. Koelpin, RWW2015 Best Demonstration Award - 2nd place, 2015 IEEE Radio and Wireless Week, 2015. [Bibtex]
    @prize{lurz_prize_2015,
    author = {Lurz, Fabian and Mann, Sebastian and Linz, Sarah and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    booktitle = {2015 IEEE Radio and Wireless Week},
    cris = {lurz_prize_2015},
    year = {2015},
    month = {01},
    day = {28},
    title = {RWW2015 Best Demonstration Award - 2nd place},
    type = {20773-Kleiner Preis},
    }
  • M. Sporer, F. Lurz, E. Schlücker, R. Weigel, and A. Koelpin, WiSNet Student Paper Competition, Second Place, IEEE Microwave Theory and Techniques Society (MTT-S), 2015. [Bibtex]
    @prize{sporer_prize_2015,
    abstract = {Underwater Interferometric Radar Sensor for Distance and Vibration Measurement},
    author = {Sporer, Michael and Lurz, Fabian and Schlücker, Eberhard and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Microwave Theory and Techniques Society (MTT-S)},
    cris = {sporer_prize_2015},
    year = {2015},
    month = {01},
    day = {28},
    title = {WiSNet Student Paper Competition, Second Place},
    type = {20773-Kleiner Preis},
    }
  • S. Mann and F. Lurz, IEEE MTT-S High Sensitivity Radar Student Design Competition - 1st place, IEEE Microwave Theory and Techniques Society (MTT-S), 2014. [Bibtex]
    @prize{mann_prize_2014a,
    author = {Mann, Sebastian and Lurz, Fabian},
    booktitle = {IEEE Microwave Theory and Techniques Society (MTT-S)},
    cris = {mann_prize_2014a},
    year = {2014},
    month = {06},
    day = {05},
    title = {IEEE MTT-S High Sensitivity Radar Student Design Competition - 1st place},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz, Master-Preis der Siemens Corporate Technology, Technische Fakultät der Friedrich-Alexander-Universität Erlangen-Nürnberg, 2014. [Bibtex]
    @prize{lurz_prize_2014,
    abstract = {Die Preise der Siemens AG werden zur Förderung und Anerkennung von herausragenden Absolventen vergeben.},
    author = {Lurz, Fabian},
    booktitle = {Technische Fakultät der Friedrich-Alexander-Universität Erlangen-Nürnberg},
    cris = {lurz_prize_2014},
    year = {2014},
    month = {02},
    day = {07},
    title = {Master-Preis der Siemens Corporate Technology},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz, Stipendium für die Masterarbeit, Stiftung Industrieforschung, 2012. [Bibtex]
    @prize{lurz_prize_2012,
    abstract = {Mit ihren Stipendien fördert die Stiftung Industrieforschung Studierende, die sich durch überdurchschnittliche Studienleistungen auszeichnen. Zugleich unterstützt die Stiftung auf diese Weise Forschungsarbeiten, die nicht nur wissenschaftlich anspruchsvoll sind, sondern zugleich die Orientierung der Hochschulinstitute, an denen sie entstehen, auf zentrale Forschungsfragen des industriellen Mittelstandes stärken.},
    author = {Lurz, Fabian},
    booktitle = {Stiftung Industrieforschung},
    cris = {lurz_prize_2012},
    year = {2012},
    month = {11},
    day = {14},
    title = {Stipendium für die Masterarbeit},
    type = {20773-Kleiner Preis},
    }

COPYRIGHT NOTICE: Copyright and all rights of the material above are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by the appropriate copyright. The material may not be reposted without the explicit permission of the copyright holder.

COPYRIGHT NOTICE FOR IEEE PUBLICATIONS: © IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

COPYRIGHT NOTICE FOR EUMA PUBLICATIONS: © EUMA. Personal use of this material is permitted. Permission from European Microwave Association(EUMA) must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Patente

  • F. Lurz, S. Lindner, A. Koelpin, G. Sept-Enzel, P. Dingler, and E. Halder, Elektrisches Messsystem zur Frequenzmessung und Erkennung von Störsignalen und Betriebsverfahren hierfür, 2016. [Bibtex]
    @patent{lurz_patent_2016,
    author = {Lurz, Fabian and Lindner, Stefan and Koelpin, Alexander and Sept-Enzel, Gerold and Dingler, Peter and Halder, Ernst},
    cris = {lurz_patent_2016},
    year = {2016},
    month = {10},
    day = {13},
    number = {DE 102016119562 B3},
    title = {Elektrisches Messsystem zur Frequenzmessung und Erkennung von Störsignalen und Betriebsverfahren hierfür},
    type = {patent},
    }

COPYRIGHT NOTICE: Copyright and all rights of the material above are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by the appropriate copyright. The material may not be reposted without the explicit permission of the copyright holder.

COPYRIGHT NOTICE FOR IEEE PUBLICATIONS: © IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

COPYRIGHT NOTICE FOR EUMA PUBLICATIONS: © EUMA. Personal use of this material is permitted. Permission from European Microwave Association(EUMA) must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Publikationen

2019

  • I. Lau, M. Frank, K. Shi, F. Lurz, A. Talai, R. Weigel, and A. Koelpin, "An Accurate Free Space Method for Material Characterization in W-Band Using Material Samples with Two Different Thicknesses" in European Microwave Conference (EuMC), Madrid, 2019 (to be published). [Bibtex]
    @inproceedings{lau2018a,
    abstract = {This paper presents an accurate free space method for material characterization eliminating the problem
    of the required precise orientation between the material and the antennas and expanding the unambiguous range for electrical thick samples. It includes theoretical considerations and measurement results of four different materials. Overall, a maximum measurement uncertainty of 0.0153 for the relative permittivity and 0.001 for the loss tangent in the W-band can be achieved. Depending on the variation of the material’s thickness, the implemented setup changes lead to an reduction of the measurement uncertainty of 8 to 58%.
    }, author = {Lau, Isabella and Frank, Martin and Shi, Kilin and Lurz, Fabian and Talai, Armin and Weigel, Robert and Koelpin, Alexander}, language = {English}, booktitle = {European Microwave Conference (EuMC)}, cris = {https://cris.fau.de/converis/publicweb/publication/200562733}, year = {2019}, month = {09}, day = {25}, eventdate = {2018-09-25/2018-09-27}, faupublication = {yes}, keywords = {permittivity,dielectric materials,microwave measurement,materials nondestructive testing}, note = {unpublished}, peerreviewed = {automatic}, title = {An Accurate Free Space Method for Material Characterization in W-Band Using Material Samples with Two Different Thicknesses}, type = {Konferenzschrift}, venue = {Madrid}, }
  • E. Hassan, M. Berggren, B. Scheiner, F. Michler, R. Weigel, and F. Lurz, "Design of Planar Microstrip-to-Waveguide Transitions using Topology Optimization" in IEEE Radio and Wireless Symposium (RWS), Orlando, FL, 2019 (to be published). [Bibtex]
    @inproceedings{hassan2019,
    abstract = {This paper presents a topology optimization approach to design planar transitions between a microstrip line (MSL) and a rectangular waveguide (RWG) in the K-band. The transition comprises two sub-transitions: one from the MSL to a substrate integrated waveguide (SIW) and the second from the SIW to the RWG. Both are on the same substrate and can be manufactured with a standard printed circuit board process. This leads to a very cost-effective solution compared with other approaches. A WR-42 waveguide can easily be surface mounted to the transitions using a standard flange. The transitions have been fabricated, and their measured performance shows good agreement with the simulations. The MSL-SIW transition has a broadband behavior and the SIW-RWG transition still reaches a relative bandwidth of 10%.},
    author = {Hassan, Emadeldeen and Berggren, Martin and Scheiner, Benedict and Michler, Fabian and Weigel, Robert and Lurz, Fabian},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/202229996},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {automatic},
    title = {Design of Planar Microstrip-to-Waveguide Transitions using Topology Optimization},
    venue = {Orlando, FL},
    }
  • J. Lichtblau, F. Lurz, R. Weigel, and A. Koelpin, "Measurements for Onboard Communication in a High-Speed Train up to 330 km/h for Selected Scenarios at 2.45 GHz" in 2019 IEEE Radio and Wireless Symposium (RWS), Orlando, FL, USA, 2019 (to be published). [Bibtex]
    @inproceedings{lichtblau2019,
    author = {Lichtblau, Johann and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    booktitle = {2019 IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/204202476},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {unknown},
    title = {Measurements for Onboard Communication in a High-Speed Train up to 330 km/h for Selected Scenarios at 2.45 GHz},
    type = {Konferenzschrift},
    venue = {Orlando, FL, USA},
    }
  • F. Michler, B. Scheiner, F. Lurz, R. Weigel, and A. Koelpin, "(Micro)metering with Microwaves: A Low-Cost Low-Power High-Precision Radar System", IEEE Microwave Magazine, 2019 (to be published). [DOI] [Bibtex]
    @article{michler2019,
    author = {Michler, Fabian and Scheiner, Benedict and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    cris = {https://cris.fau.de/converis/publicweb/publication/203795705},
    year = {2019},
    month = {01},
    doi = {10.1109/MMM.2018.2875612},
    faupublication = {yes},
    journaltitle = {IEEE Microwave Magazine},
    note = {unpublished},
    peerreviewed = {automatic},
    title = {(Micro)metering with Microwaves: A Low-Cost Low-Power High-Precision Radar System},
    }
  • F. Michler, K. Shi, S. Schellenberger, B. Scheiner, F. Lurz, R. Weigel, and A. Koelpin, "Pulse Wave Velocity Detection Using a 24 GHz Six-Port Based Doppler Radar" in IEEE Radio and Wireless Symposium (RWS), Orlando, FL, 2019 (to be published). [Bibtex]
    @inproceedings{michler2019a,
    author = {Michler, Fabian and Shi, Kilin and Schellenberger, Sven and Scheiner, Benedict and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/202125433},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {automatic},
    title = {Pulse Wave Velocity Detection Using a 24 GHz Six-Port Based Doppler Radar},
    venue = {Orlando, FL},
    }
  • T. Reißland, F. Lurz, R. Weigel, and A. Koelpin, "Compressed sensing based near-field radar target imaging and localization employing normalized iterative hard thresholding" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Orlando, FL, 2019 (to be published). [Bibtex]
    @inproceedings{reissland2019,
    abstract = {
    The paper presents an approach for target position recovery from frequency modulated continuous wave (FMCW) radar data. The presented algorithm is, in contrast to many established techniques, able to use snapshots taken from arbitrary positions. The presented technique can be applied to imaging as well as localization applications. The basis of the approach is a compressed sensing based algorithm called normalized iterative hard thresholding (NIHT). To prove its capabilities it is evaluated by simulation over a wide range of signal bandwidths and base frequencies.
    }, author = {Reißland, Torsten and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander}, language = {English}, booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)}, cris = {https://cris.fau.de/converis/publicweb/publication/204083974}, year = {2019}, month = {01}, day = {20}, eventdate = {2019-01-20/2019-01-23}, faupublication = {yes}, note = {unpublished}, peerreviewed = {automatic}, title = {Compressed sensing based near-field radar target imaging and localization employing normalized iterative hard thresholding}, type = {undefined}, venue = {Orlando, FL}, }
  • B. Scheiner, F. Lurz, F. Michler, I. Lau, J. Lichtblau, R. Weigel, and A. Koelpin, "Design of a Rotary Coupler for Data Transmission on Fast Rotating Mechanical Shafts and Roboter Arms" in IEEE Radio and Wireless Symposium (RWS), Orlando, FL, USA, 2019 (to be published). [Bibtex]
    @inproceedings{scheiner2019,
    author = {Scheiner, Benedict and Lurz, Fabian and Michler, Fabian and Lau, Isabella and Lichtblau, Johann and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/204085644},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {unknown},
    title = {Design of a Rotary Coupler for Data Transmission on Fast Rotating Mechanical Shafts and Roboter Arms},
    type = {Konferenzschrift},
    venue = {Orlando, FL, USA},
    }
  • M. Frank, F. Lurz, R. Weigel, and A. Koelpin, "122 GHz Low-cost Substrate Integrated Waveguide based Leaky-Wave Antenna Design" in IEEE Radio and Wireless Symposium (RWS), Orlando, FL, USA, 2019 (to be published). [Bibtex]
    @inproceedings{frank2019,
    author = {Frank, Martin and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/204103705},
    year = {2019},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {122 GHz Low-cost Substrate Integrated Waveguide based Leaky-Wave Antenna Design},
    type = {Konferenzschrift},
    venue = {Orlando, FL, USA},
    }

2018

  • K. Shi, S. Schellenberger, T. Steigleder, F. Michler, F. Lurz, R. Weigel, and A. Koelpin, "Contactless Carotid Pulse Measurement Using Continuous Wave Radar" in 2018 Asia-Pacific Microwave Conference, Kyoto, 2018 (to be published). [Bibtex]
    @inproceedings{shi2018b,
    abstract = {Cardiovascular diseases are one of the major causes of death. Regular checkups and preventive actions can drastically help reducing fatal incidences. This can be achieved by monitoring the carotid artery or rather the carotid pulse signal. Commonly, ultrasound devices are used for that purpose. However, these devices are costly, mostly stationary and their usage requires training and experience. This paper investigates the possible usage of radar systems as a contactless and low-cost alternative for carotid pulse measurements. Theoretical investigations reveal a linear relationship between the measurands of both devices and synchronous recordings from three test persons further confirm the feasibility of using radar systems as a potential device for monitoring cardiovascular diseases.},
    author = {Shi, Kilin and Schellenberger, Sven and Steigleder, Tobias and Michler, Fabian and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {2018 Asia-Pacific Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/202749417},
    year = {2018},
    month = {11},
    day = {06},
    eventdate = {2018-11-06/2018-08-09},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {automatic},
    title = {Contactless Carotid Pulse Measurement Using Continuous Wave Radar},
    venue = {Kyoto},
    }
  • S. Schellenberger, K. Shi, T. Steigleder, F. Michler, F. Lurz, R. Weigel, and A. Koelpin, "Support Vector Machine-Based Instantaneous Presence Detection for Continuous Wave Radar Systems" in 2018 Asia-Pacific Microwave Conference, Kyoto, 2018 (to be published). [Bibtex]
    @inproceedings{schellenberger2018a,
    abstract = {Instantaneous detection of missing vital signs at inpatient beds enables fast intervention for cardiac arrests.
    Using a 24 GHz bistatic radar, a fast presence detection based on a support vector machine (SVM) classifer is realized. Large body motions or even small distance deviations, such as movement of the chest induced by heartbeat or breathing, are distinguishable from the measured noise of an unoccupied bed. For classifcation two features are calculated based on windowed I and Q data. Performance is evaluated by varying window sizes from 0.2 ... 1.5 s for feature calculation and training of the SVM classifer. In the resting scenario an accuracy of 99.2% and F1-score of 99.1% with windows of 0.2 s is achieved.
    }, author = {Schellenberger, Sven and Shi, Kilin and Steigleder, Tobias and Michler, Fabian and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander}, language = {English}, booktitle = {2018 Asia-Pacific Microwave Conference}, cris = {https://cris.fau.de/converis/publicweb/publication/203101192}, year = {2018}, month = {11}, day = {06}, eventdate = {2018-11-06/2018-11-09}, faupublication = {yes}, note = {unpublished}, peerreviewed = {automatic}, title = {Support Vector Machine-Based Instantaneous Presence Detection for Continuous Wave Radar Systems}, venue = {Kyoto}, }
  • F. Michler, B. Scheiner, F. Lurz, R. Weigel, and A. Koelpin, "A Planar 24 GHz Switched-Beam Antenna Based on PIN Diodes for Remote Sensing Applications" in 2018 Asia-Pacific Microwave Conference, Kyoto, Japan, 2018 (to be published). [Bibtex]
    @inproceedings{michler2018a,
    abstract = {This paper presents a planar switched-beam antenna for remote sensing applications at 24 GHz. The antenna consists of 9x8 radiating patches, arranged as nine linear arrays that are connected by phase shifters based on PIN diodes, which allow to quickly switch the main lobe between two symmetric states by using a small control current. The single array elements were designed and simulated in CST Microwave Studio and the array feed network including the phase shifters was analyzed using Keysight ADS. Measurements of all individual components and the final array antenna were taken to confirm the simulations and to prove the concept.
    }, author = {Michler, Fabian and Scheiner, Benedict and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander}, language = {English}, booktitle = {2018 Asia-Pacific Microwave Conference}, cris = {https://cris.fau.de/converis/publicweb/publication/200392474}, year = {2018}, month = {11}, day = {06}, eventdate = {2018-11-06/2018-11-09}, faupublication = {yes}, note = {unpublished}, peerreviewed = {unknown}, title = {A Planar 24 GHz Switched-Beam Antenna Based on PIN Diodes for Remote Sensing Applications}, type = {Konferenzschrift}, venue = {Kyoto, Japan}, }
  • F. Lurz, E. Halder, P. Dingler, G. Sept-Enzel, B. Scheiner, R. Weigel, and A. Koelpin, "Reader Concept for Wireless Resonant Surface Acoustic Wave Instrumentation based on Instantaneous Frequency Measurement" in SAW Sensor & Actuator Symposium, Dresden, Germany, 2018. [Bibtex]
    @inproceedings{lurz2018e,
    author = {Lurz, Fabian and Halder, Ernst and Dingler, Peter and Sept-Enzel, Gerold and Scheiner, Benedict and Weigel, Robert and Koelpin, Alexander},
    booktitle = {SAW Sensor & Actuator Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/201268528},
    year = {2018},
    month = {10},
    day = {01},
    eventdate = {2018-10-01/2018-10-02},
    faupublication = {yes},
    peerreviewed = {Yes},
    title = {Reader Concept for Wireless Resonant Surface Acoustic Wave Instrumentation based on Instantaneous Frequency Measurement},
    type = {Abstract zum Vortrag},
    venue = {Dresden, Germany},
    }
  • M. Frank, T. Reißland, F. Lurz, M. Völkel, F. Lambrecht, S. Kiefl, P. Ghesquiere, H. Ng, D. Kissinger, R. Weigel, and A. Koelpin, "Antenna and Package Design for 61 GHz and 122 GHz Radar Sensors in Embedded Wafer-Level Ball Grid Array Technology", IEEE Transactions on Microwave Theory and Techniques, 2018 (to be published). [Bibtex]
    @article{frank2018b,
    author = {Frank, Martin and Reißland, Torsten and Lurz, Fabian and Völkel, Matthias and Lambrecht, Franziska and Kiefl, Stefan and Ghesquiere, Pol and Ng, Herman and Kissinger, Dietmar and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {IEEE Transactions on Microwave Theory and Techniques},
    cris = {https://cris.fau.de/converis/publicweb/publication/202229247},
    year = {2018},
    month = {10},
    faupublication = {yes},
    issn = {0018-9480},
    journaltitle = {IEEE Transactions on Microwave Theory and Techniques},
    note = {unpublished},
    peerreviewed = {Yes},
    shortjournal = {IEEE T MICROW THEORY},
    title = {Antenna and Package Design for 61 GHz and 122 GHz Radar Sensors in Embedded Wafer-Level Ball Grid Array Technology},
    type = {Article in Journal},
    }
  • F. Lurz, S. Mann, R. Weigel, and A. Koelpin, "Substrate Integrated Waveguide Technology for mm-Wave Interferometric Radar Applications" in European Microwave Week (EuMW), Worshop on Substrate Integrated Technologies and Applications, Madrid, Spain, 2018. [Bibtex]
    @inproceedings{lurz2018d,
    abstract = {SIW technology shows promising approaches for mm-Wave applications, especially for radar sensors. In this workshop, a complete 61 GHz six-port radar system will be presented, and the underlying system and circuit concepts are discussed. The radio frequency frontend is realized as system on substrate in a mixed SIW-micro-strip-technology to make the systems insensitive to external interference. The individual building blocks, such as the SIW fed Vivaldi antenna design, SIW coupler and power dividers, as well as the necessary transitions to the power detectors, attenuators and the MMICs are presented. Furthermore, measurements of the individual components and the complete system are shown.

    }, author = {Lurz, Fabian and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander}, booktitle = {European Microwave Week (EuMW), Worshop on Substrate Integrated Technologies and Applications}, cris = {https://cris.fau.de/converis/publicweb/publication/200665972}, year = {2018}, month = {10}, day = {23}, eventdate = {2018-09-23/2018-09-28}, faupublication = {yes}, peerreviewed = {Yes}, title = {Substrate Integrated Waveguide Technology for mm-Wave Interferometric Radar Applications}, type = {Abstract zum Vortrag}, venue = {Madrid, Spain}, }
  • S. Linz, F. Lurz, R. Weigel, and A. Koelpin, "Ultra-short-range radar for precise industrial positioning" in Kleinheubacher Tagung 2018, Miltenberg, Germany, 2018. [Bibtex]
    @inproceedings{linz2018a,
    author = {Linz, Sarah and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {Kleinheubacher Tagung 2018},
    cris = {https://cris.fau.de/converis/publicweb/publication/202236429},
    year = {2018},
    month = {09},
    day = {24},
    eventdate = {2018-09-24/2018-09-26},
    faupublication = {yes},
    peerreviewed = {Yes},
    title = {Ultra-short-range radar for precise industrial positioning},
    type = {Abstract zum Vortrag},
    venue = {Miltenberg, Germany},
    }
  • F. Michler, H. Deniz, F. Lurz, R. Weigel, and A. Koelpin, "Performance Analysis of an Ultra Wideband Transceiver for Real-Time Localization" in European Microwave Conference (EuMC), Madrid, 2018 (to be published). [Bibtex]
    @inproceedings{michler2018,
    author = {Michler, Fabian and Deniz, Harun and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {European Microwave Conference (EuMC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/110644204},
    year = {2018},
    month = {09},
    day = {27},
    eventdate = {2018-09-23/2018-09-28},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {automatic},
    title = {Performance Analysis of an Ultra Wideband Transceiver for Real-Time Localization},
    venue = {Madrid},
    }
  • B. Scheiner, F. Lurz, F. Michler, S. Linz, R. Weigel, and A. Koelpin, "Six-Port Based Multitone and Low-Power Radar System for Waveguides in Smart Factories" in European Microwave Conference (EuMC), Madrid, Spain, 2018. [Bibtex]
    @inproceedings{scheiner2018b,
    author = {Scheiner, Benedict and Lurz, Fabian and Michler, Fabian and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    booktitle = {European Microwave Conference (EuMC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/111656644},
    year = {2018},
    month = {09},
    day = {27},
    eventdate = {2018-09-25/2018-09-27},
    faupublication = {yes},
    peerreviewed = {unknown},
    title = {Six-Port Based Multitone and Low-Power Radar System for Waveguides in Smart Factories},
    type = {Konferenzschrift},
    venue = {Madrid, Spain},
    }
  • F. Lurz, B. Scheiner, S. Linz, R. Weigel, and A. Koelpin, "Compact PCB Delay Line for Six-Port Based Instantaneous Frequency Measurement" in 22nd International Microwave and Radar Conference (MIKON), Poznań, Poland, 2018, pp. 87-90. [DOI] [Bibtex]
    @inproceedings{lurz2018b,
    author = {Lurz, Fabian and Scheiner, Benedict and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {22nd International Microwave and Radar Conference (MIKON)},
    cris = {https://cris.fau.de/converis/publicweb/publication/106749324},
    year = {2018},
    month = {05},
    day = {15},
    doi = {10.23919/MIKON.2018.8405343},
    eventdate = {2018-05-15/2018-05-17},
    faupublication = {yes},
    pages = {87--90},
    peerreviewed = {Yes},
    title = {Compact PCB Delay Line for Six-Port Based Instantaneous Frequency Measurement},
    type = {Konferenzschrift},
    venue = {Poznań, Poland},
    }
  • F. Lurz, T. Ostertag, B. Scheiner, R. Weigel, and A. Koelpin, "Reader Architectures for Wireless Surface Acoustic Wave Sensors", Sensors, vol. 18, iss. 1734, 2018. [DOI] [Bibtex]
    @article{lurz2018c,
    author = {Lurz, Fabian and Ostertag, Thomas and Scheiner, Benedict and Weigel, Robert and Koelpin, Alexander},
    cris = {https://cris.fau.de/converis/publicweb/publication/200233886},
    year = {2018},
    month = {05},
    day = {28},
    doi = {10.3390/S18061734},
    faupublication = {yes},
    issn = {1424-8220},
    journaltitle = {Sensors},
    number = {1734},
    peerreviewed = {Yes},
    shortjournal = {SENSORS-BASEL},
    title = {Reader Architectures for Wireless Surface Acoustic Wave Sensors},
    type = {Review article},
    url = {http://www.mdpi.com/1424-8220/18/6/1734},
    volume = {18},
    }
  • S. Linz, F. Lurz, R. Weigel, and A. Koelpin, "A Review on Six-Port Radar and Its Calibration Techniques" in 22nd International Microwave and Radar Conference (MIKON), Poznań, Poland, 2018, pp. 80-83. [DOI] [Bibtex]
    @inproceedings{linz2018,
    author = {Linz, Sarah and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {22nd International Microwave and Radar Conference (MIKON)},
    cris = {https://cris.fau.de/converis/publicweb/publication/109241484},
    year = {2018},
    month = {05},
    day = {15},
    doi = {10.23919/MIKON.2018.8405341},
    eventdate = {2018-05-15/2018-05-17},
    faupublication = {yes},
    pages = {80--83},
    peerreviewed = {Yes},
    title = {A Review on Six-Port Radar and Its Calibration Techniques},
    type = {Konferenzschrift},
    venue = {Poznań, Poland},
    }
  • S. Mann, C. Will, T. Reißland, F. Lurz, S. Lindner, S. Linz, R. Weigel, and A. Koelpin, "High Precision Interferometric Radar for Sheet Thickness Monitoring", IEEE Transactions on Microwave Theory and Techniques, pp. 1-14, 2018. [DOI] [Bibtex]
    @article{mann2018,
    abstract = {Contact-less sensing plays an important role in today’s highly automated industrial environment, as modern sensors allow for an increased product quality in high-speed manufacturing lines. Hereby, a measurement system for sheet thickness monitoring in aluminum and steel rolling mills is presented. The presented concept is based on a differential measurement principle using two cooperating six-port radar systems. The radio frequency front-ends are designed in a high density substrate integrated waveguide technology at a frequency of 61 GHz. Furthermore, a detailed analysis of non-ideal behavior of mono-static six-port radar front-ends is presented. Moreover, the measurement principle is evaluated in a simplified measurement setup and the results are compared to previously presented theory. Finally, an overview of modern sensing technology for steel rolling mills is presented and compared to the proposed measurement system considering the important aspects, i.e. update rate, precision, and thickness limit.},
    author = {Mann, Sebastian and Will, Christoph and Reißland, Torsten and Lurz, Fabian and Lindner, Stefan and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    cris = {https://cris.fau.de/converis/publicweb/publication/118145544},
    year = {2018},
    month = {04},
    doi = {10.1109/TMTT.2018.2825328},
    faupublication = {yes},
    issn = {0018-9480},
    journaltitle = {IEEE Transactions on Microwave Theory and Techniques},
    keywords = {radar systems,interferometry,six-port circuits,microwave circuits,substrate integrated waveguide (SIW),planar waveguides},
    pages = {1--14},
    peerreviewed = {Yes},
    shortjournal = {IEEE T MICROW THEORY},
    title = {High Precision Interferometric Radar for Sheet Thickness Monitoring},
    type = {Article in Journal},
    }
  • B. Scheiner, F. Lurz, F. Michler, S. Lindner, S. Linz, R. Weigel, and A. Koelpin, "Fast Dual-Synthesizer for Six-Port In-Situ Linearization in the 2,4 GHz ISM-Band" in German Microwave Conference, Freiburg, Germany, 2018, pp. 223-226. [DOI] [Bibtex]
    @inproceedings{scheiner2018a,
    author = {Scheiner, Benedict and Lurz, Fabian and Michler, Fabian and Lindner, Stefan and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    booktitle = {German Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/106328904},
    year = {2018},
    month = {03},
    day = {13},
    doi = {10.23919/GEMIC.2018.8335070},
    eventdate = {2018-03-12/2018-03-14},
    faupublication = {yes},
    pages = {223--226},
    peerreviewed = {unknown},
    title = {Fast Dual-Synthesizer for Six-Port In-Situ Linearization in the 2,4 GHz ISM-Band},
    type = {Konferenzschrift},
    venue = {Freiburg, Germany},
    }
  • F. Lurz, F. Michler, B. Scheiner, R. Weigel, and A. Koelpin, "Microw(h)att?! Ultralow-Power Six-Port Radar", IEEE Microwave Magazine, vol. 19, iss. 1, pp. 91-98, 2018. [DOI] [Bibtex]
    @article{lurz2018,
    author = {Lurz, Fabian and Michler, Fabian and Scheiner, Benedict and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {IEEE Microwave Magazine},
    cris = {https://cris.fau.de/converis/publicweb/publication/120389104},
    year = {2018},
    month = {01},
    doi = {10.1109/MMM.2017.2759640},
    faupublication = {yes},
    issn = {1527-3342},
    journaltitle = {IEEE Microwave Magazine},
    number = {1},
    pages = {91--98},
    peerreviewed = {Yes},
    shortjournal = {IEEE MICROW MAG},
    title = {Microw(h)att?! Ultralow-Power Six-Port Radar},
    volume = {19},
    }
  • F. Lurz, P. Hofstetter, S. Lindner, S. Linz, F. Michler, R. Weigel, and A. Koelpin, "Low-Power Frequency Synthesizer for Multi-Tone Six-Port Radar" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Anaheim, CA, USA, 2018, pp. 84-87. [DOI] [Bibtex]
    @inproceedings{lurz2018a,
    author = {Lurz, Fabian and Hofstetter, Patrick and Lindner, Stefan and Linz, Sarah and Michler, Fabian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/120470944},
    year = {2018},
    month = {01},
    day = {14},
    doi = {10.1109/WISNET.2018.8311571},
    eventdate = {2018-01-14/2018-01-17},
    faupublication = {yes},
    pages = {84--87},
    peerreviewed = {Yes},
    title = {Low-Power Frequency Synthesizer for Multi-Tone Six-Port Radar},
    venue = {Anaheim, CA, USA},
    }
  • M. Hertlein, S. Breun, G. Cappel, A. Schwarzmeier, F. Lurz, R. Weigel, and G. Fischer, "Evaluation of Cellular Standards for Low Data Rate Applications Regarding Power Consumption and Timing Parameters" in IEEE Radio Wireless Symposium, Anaheim, CA, USA, 2018, pp. 217-219. [DOI] [Bibtex]
    @inproceedings{hertlein2018,
    abstract = {3GPP introduced new specifications for low data rate applications, due to the IoT sector and also the enormous amount of connected devices. This standards should reduce overhead, increase coverage and reduce power consumption in addition to an increasing capacity. This paper focuses on power consumption measurements of the current existing standards e.g. LTE and makes a comparison with the new Narrowband-IoT standards. Also an evaluation on timing parameters and different modes during the transmission is given. Finally this paper helps to decide which standard provides the best benefit for a certain application.},
    author = {Hertlein, Markus and Breun, Sascha and Cappel, Germar and Schwarzmeier, Andre and Lurz, Fabian and Weigel, Robert and Fischer, Georg},
    language = {English},
    booktitle = {IEEE Radio Wireless Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/111580524},
    year = {2018},
    month = {01},
    day = {14},
    doi = {10.1109/RWS.2018.8304991},
    eventdate = {2018-01-14/2018-01-17},
    faupublication = {yes},
    keywords = {Cellular networks,Internet of Things (IoT),Narrowband IoT,Power consumption},
    pages = {217--219},
    peerreviewed = {unknown},
    title = {Evaluation of Cellular Standards for Low Data Rate Applications Regarding Power Consumption and Timing Parameters},
    type = {Konferenzschrift},
    url = {https://ieeexplore.ieee.org/document/8304991/},
    venue = {Anaheim, CA, USA},
    }
  • B. Scheiner, S. Mann, F. Lurz, F. Michler, S. Erhardt, S. Lindner, R. Weigel, and A. Koelpin, "Microstrip-to-Waveguide Transition in Planar Form Using a Substrate Integrated Waveguide" in Radio and Wireless Symposium (RWS), 2018 IEEE, Anaheim, CA, USA, 2018, pp. 18-20. [DOI] [Bibtex]
    @inproceedings{scheiner2018,
    author = {Scheiner, Benedict and Mann, Sebastian and Lurz, Fabian and Michler, Fabian and Erhardt, Stefan and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {Radio and Wireless Symposium (RWS), 2018 IEEE},
    cris = {https://cris.fau.de/converis/publicweb/publication/110064284},
    year = {2018},
    month = {01},
    day = {14},
    doi = {10.1109/RWS.2018.8304934},
    eventdate = {2018-01-14/2018-01-17},
    eventtitle = {IEEE Radio Wireless Symposium},
    faupublication = {yes},
    pages = {18--20},
    peerreviewed = {Yes},
    title = {Microstrip-to-Waveguide Transition in Planar Form Using a Substrate Integrated Waveguide},
    type = {Konferenzschrift},
    venue = {Anaheim, CA, USA},
    }
  • J. Lichtblau, B. Sanftl, F. Lurz, R. Weigel, and A. Koelpin, "Examination of OFDM for Wireless Train-Onboard Communication" in IEEE Radio Wireless Symposium, Anaheim, CA, USA, 2018, pp. 184-187. [DOI] [Bibtex]
    @inproceedings{lichtblau2018,
    author = {Lichtblau, Johann and Sanftl, Benedikt and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    editor = {IEEE},
    language = {English},
    booktitle = {IEEE Radio Wireless Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/123605504},
    year = {2018},
    month = {01},
    day = {14},
    doi = {10.1109/RWS.2018.8304981},
    eventdate = {2018-01-14/2018-01-17},
    faupublication = {yes},
    issn = {2164-2974},
    pages = {184--187},
    peerreviewed = {unknown},
    title = {Examination of OFDM for Wireless Train-Onboard Communication},
    type = {Konferenzschrift},
    venue = {Anaheim, CA, USA},
    }

2017

  • C. Will, S. Mann, F. Michler, T. Reißland, F. Lurz, R. Weigel, and A. Koelpin, "Error Compensation of the Temperature Influence on Radar based Displacement Measurements" in 2017 IEEE Asia Pacific Microwave Conference (APMC), Kuala Lumpur, Malaysia, 2017, pp. 89-92. [DOI] [Bibtex]
    @inproceedings{will2017c,
    abstract = {Highly precise sensor systems for contactless displacement measurements play an important role within the industrial application field. Various radar based measurement systems utilizing different techniques have been published for this purpose, but the influence of the ambient temperature on the measurement results has only rarely been investigated, yet. Whereas many publications deal with research on temperature compensation of single components, this paper describes the influence of the ambient temperature on the entire RF front end of the sensor system, a 61 GHz Six-Port interferometer. After presenting the measurement system, the temperature influences on the four output voltages and the consequences for the measurement results are analyzed. Finally, a compensation algorithm is proposed to decrease the temperature induced impairments of the systematic measurement error.},
    author = {Will, Christoph and Mann, Sebastian and Michler, Fabian and Reißland, Torsten and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {2017 IEEE Asia Pacific Microwave Conference (APMC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108238064},
    year = {2017},
    month = {11},
    day = {13},
    doi = {10.1109/APMC.2017.8251384},
    eventdate = {2017-11-13/2017-11-16},
    eventtitle = {IEEE Asia Pacific Microwave Conference (APMC)},
    faupublication = {yes},
    pages = {89--92},
    peerreviewed = {Yes},
    title = {Error Compensation of the Temperature Influence on Radar based Displacement Measurements},
    type = {Konferenzschrift},
    venue = {Kuala Lumpur, Malaysia},
    }
  • S. Lindner, F. Lurz, S. Linz, R. Weigel, and A. Koelpin, "Mixer Assisted Interferometric Six-Port System for Accurate Distance Measurements" in European Radar Conference, Nürnberg, Germany, 2017. [DOI] [Bibtex]
    @inproceedings{lindner2017,
    author = {Lindner, Stefan and Lurz, Fabian and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    booktitle = {European Radar Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/107173264},
    year = {2017},
    month = {10},
    day = {11},
    doi = {10.23919/EURAD.2017.8249204},
    eventdate = {2017-10-11/2017-10-13},
    faupublication = {yes},
    isbn = {9782874870491},
    peerreviewed = {Yes},
    title = {Mixer Assisted Interferometric Six-Port System for Accurate Distance Measurements},
    type = {Konferenzschrift},
    venue = {Nürnberg, Germany},
    }
  • F. Michler, S. Lindner, F. Lurz, S. Erhardt, R. Weigel, and A. Koelpin, "Zero-Bias Schottky Power Detector Design for Six-Port based Radar Systems" in European Microwave Conference, Nürnberg, Germany, 2017. [DOI] [Bibtex]
    @inproceedings{michler2017,
    author = {Michler, Fabian and Lindner, Stefan and Lurz, Fabian and Erhardt, Stefan and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {European Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/108331564},
    year = {2017},
    month = {10},
    day = {08},
    doi = {10.23919/EUMC.2017.8230841},
    eventdate = {2017-10-08/2017-10-13},
    faupublication = {yes},
    isbn = {9782874870477},
    peerreviewed = {Yes},
    title = {Zero-Bias Schottky Power Detector Design for Six-Port based Radar Systems},
    type = {Konferenzschrift},
    venue = {Nürnberg, Germany},
    }
  • C. Will, S. Linz, S. Mann, F. Lurz, S. Lindner, R. Weigel, and A. Koelpin, "A 24 GHz Waveguide based Radar System using an Advanced Algorithm for I/Q Offset Cancelation", Advances in Radio Science, vol. Kleinheubacher Berichte 2016, iss. 15, 2017. [DOI] [Bibtex]
    @article{will2017d,
    abstract = {Precise position measurement with micrometer accuracy plays an important role in modern industrial applications. Herewith, a guided wave Six-Port interferometric radar system is presented. Due to limited matching and discontinuities in the radio frequency (RF) part of the system, the designers have to deal with DC offsets. The offset voltages in the baseband lead to worse relative modulation dynamics relating to the full scale range of the analog-to-digital converters and~ thus, considerably degrade the system performance. While common cancelation techniques try to estimate and extinguish the DC offsets directly, the proposed radar system is satisfied with equalizing both DC offsets for each of the two differential baseband signal pairs. Since the complex representation of the baseband signals is utilized for a subsequent arctangent demodulation, the proposed offset equalization implicates a centering of the in-phase and quadrature (I/Q) components of the received signal, which is sufficient to simplify the demodulation and improve the phase accuracy. Therefore, a standard Six-Port radar system is extended and a variable phase shifter plus variable attenuators are inserted at different positions. An intelligent algorithm adjusts these configurable components to achieve optimal I/Q offset cancelation.},
    author = {Will, Christoph and Linz, Sarah and Mann, Sebastian and Lurz, Fabian and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    cris = {https://cris.fau.de/converis/publicweb/publication/108439584},
    year = {2017},
    month = {10},
    day = {25},
    doi = {10.5194/ARS-15-249-2017},
    faupublication = {yes},
    issn = {1684-9973},
    journaltitle = {Advances in Radio Science},
    number = {15},
    peerreviewed = {unknown},
    series = {Advances in Radio Science},
    title = {A 24 GHz Waveguide based Radar System using an Advanced Algorithm for I/Q Offset Cancelation},
    volume = {Kleinheubacher Berichte 2016},
    }
  • F. Lurz, S. Müller, S. Lindner, S. Linz, M. Gardill, R. Weigel, and A. Koelpin, "Smart Communication and Relative Localization System for Firefighters and Rescuers" in IEEE International Microwave Symposium, Honolulu, HI, USA, 2017, pp. 1421-1424. [DOI] [Bibtex]
    @inproceedings{lurz2017a,
    author = {Lurz, Fabian and Müller, Simon and Lindner, Stefan and Linz, Sarah and Gardill, Markus and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {IEEE International Microwave Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/108264244},
    year = {2017},
    month = {06},
    day = {04},
    doi = {10.1109/MWSYM.2017.8058885},
    eventdate = {2017-06-04/2017-06-09},
    faupublication = {yes},
    pages = {1421--1424},
    peerreviewed = {Yes},
    title = {Smart Communication and Relative Localization System for Firefighters and Rescuers},
    type = {Konferenzschrift},
    venue = {Honolulu, HI, USA},
    }
  • S. Linz, C. Will, F. Lurz, S. Lindner, S. Mann, R. Schober, R. Weigel, and A. Koelpin, "Detector Nonlinearity in Six-Port Radar" in IEEE Topical Conference on Wireless Sensors and Sensor Networks, Phoenix, AZ, USA, 2017, pp. 19-22. [DOI] [Bibtex]
    @inproceedings{linz2017,
    abstract = {This paper presents an in-situ detector characterization and calibration method for differential I/Q Sixport radar systems. A separate calibration of the nonlinear detectors and the linear Six-port front-end enables an independent analysis of errors caused by detector nonlinearity and by the measurement scenario. A linearity analysis of various detectors in Six-port radar systems shows the necessity of a detector calibration for accurate displacement measurements. The calibration is evaluated with three different Six-port front-ends at 24 GHz in divers measurement scenarios. An error reduction of up to 50% has been achieved.},
    author = {Linz, Sarah and Will, Christoph and Lurz, Fabian and Lindner, Stefan and Mann, Sebastian and Schober, Robert and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks},
    cris = {https://cris.fau.de/converis/publicweb/publication/120065044},
    year = {2017},
    month = {01},
    day = {15},
    doi = {10.1109/WISNET.2017.7878745},
    eventdate = {2017-01-15/2017-01-18},
    faupublication = {yes},
    pages = {19--22},
    peerreviewed = {Yes},
    title = {Detector Nonlinearity in Six-Port Radar},
    type = {Konferenzschrift},
    venue = {Phoenix, AZ, USA},
    }
  • F. Lurz, S. Lindner, S. Linz, S. Mann, R. Weigel, and A. Koelpin, "High-Speed Resonant Surface Acoustic Wave Instrumentation Based on Instantaneous Frequency Measurement", IEEE Transactions on Instrumentation and Measurement, vol. 66, iss. 5, pp. 974-984, 2017. [DOI] [Bibtex]
    @article{lurz2017,
    abstract = {Surface acoustic wave (SAW) resonators are used for a broad range of wireless sensing applications, some of them having high demands on the resolution as well as the measurement update rate. This paper presents a new interrogation method for precise and fast frequency determination of passive SAW resonators based on instantaneous frequency measurement (IFM) by a low-cost Six-Port interferometer. By using a delay line, the frequency measurement is reduced to a phase measurement that can be instantaneously evaluated by the Six-Port network. No complex signal processing is necessary providing high update rates and low hardware costs. An in-depth analysis of the system concept and its building blocks is presented and the advantages as well as the limitations are discussed and compared to the current state-of-the-art. Finally, a demonstrator in the 2.4 GHz frequency band shows the feasibility and the precision of the concept with measurement times of only a few microseconds.},
    author = {Lurz, Fabian and Lindner, Stefan and Linz, Sarah and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    cris = {https://cris.fau.de/converis/publicweb/publication/122913384},
    year = {2017},
    month = {01},
    day = {19},
    doi = {10.1109/TIM.2016.2642618},
    faupublication = {yes},
    issn = {0018-9456},
    journaltitle = {IEEE Transactions on Instrumentation and Measurement},
    number = {5},
    pages = {974--984},
    peerreviewed = {Yes},
    shortjournal = {IEEE T INSTRUM MEAS},
    title = {High-Speed Resonant Surface Acoustic Wave Instrumentation Based on Instantaneous Frequency Measurement},
    volume = {66},
    }
  • C. Will, S. Linz, S. Mann, F. Lurz, S. Lindner, R. Weigel, and A. Koelpin, "Segmental Polynomial Approximation based Phase Error Correction for Precise Near Field Displacement Measurements using Six-Port Microwave Interferometers" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Phoenix, AZ, USA, 2017. [DOI] [Bibtex]
    @inproceedings{will2017,
    abstract = {Six-Port microwave interferometers are a lowcost as well as low-power type of radar sensor with a high phase accuracy, which can be used for precise displacement measurements. Near field effects strongly influence the signal characteristics of a reflection of the electromagnetic wave near the antenna, especially if the target is low reflective. In this paper a calibration procedure based on phase error correction by segmental polynomial approximation is proposed that utilizes these effects. After validating the functionality of the calibration algorithm and its improvement by comparison to a comparable state-of-the-art procedure, two further near field measurements are presented. A cardboard as well as a plastic plate are used as low reflecting targets to show the applicability of the proposed calibration procedure for diverse measurement scenarios.},
    author = {Will, Christoph and Linz, Sarah and Mann, Sebastian and Lurz, Fabian and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108238504},
    year = {2017},
    month = {01},
    day = {15},
    doi = {10.1109/WISNET.2017.7878746},
    eventdate = {2017-01-15/2017-01-18},
    faupublication = {yes},
    peerreviewed = {Yes},
    title = {Segmental Polynomial Approximation based Phase Error Correction for Precise Near Field Displacement Measurements using Six-Port Microwave Interferometers},
    type = {Konferenzschrift},
    venue = {Phoenix, AZ, USA},
    }

2016

  • S. Wibbing, S. Mann, F. Lurz, M. Frank, R. Weigel, and A. Koelpin, "Radarbasierte und vernetzte Umfeldsensorik zur autonomen Steuerung von Industrierobotern" in VDE Kongress 2016: Internet der Dinge, Mannheim, Germany, 2016, pp. 1-6. [Bibtex]
    @inproceedings{wibbing2016b,
    abstract = {Im Zuge der so genannten vierten industriellen Revolution, kurz Industrie 4.0 genannten Initiative der Bundesregierung ist ein Hauptmerkmal die dynamische Anpassung von bislang unflexiblen Produktionseinrichtungen auf sich wechselnde Anforderungen und Umgebungsfaktoren. Besonders in Bezug auf autonom agierende Systeme wie beispielsweise Industrieroboter werden zur Realisierung solcher Anforderungen vor allem leistungsfähige Sensoren und Steuerungen benötigt. In diesem Artikel wird ein vernetztes Sensorsystem bestehend aus mehreren RADAR-Sensoren beschrieben, welche durch mehrdimensionale Sensordatenfusion ein 3D-Bild der Umgebung erstellen. Zur Vernetzung werden dabei vor allem bestehende und etablierte Netzwerktechniken zur Datenübertragung verwendet. Die Systemarchitektur und die Komponenten eines einzelnen Sensorknotens sowie der zentralen Steuereinheit werden im Detail erörtert. Im Anschluss daran werden verschiedene Messungen hinsichtlich Performanz und Auflösung präsentiert und erläutert.},
    author = {Wibbing, Sascha and Mann, Sebastian and Lurz, Fabian and Frank, Martin and Weigel, Robert and Koelpin, Alexander},
    language = {German},
    publisher = {VDE},
    booktitle = {VDE Kongress 2016: Internet der Dinge},
    cris = {https://cris.fau.de/converis/publicweb/publication/122583604},
    year = {2016},
    month = {11},
    day = {07},
    eventdate = {2016-11-07/2016-11-08},
    faupublication = {yes},
    isbn = {9783800743087},
    pages = {1--6},
    peerreviewed = {Yes},
    title = {Radarbasierte und vernetzte Umfeldsensorik zur autonomen Steuerung von Industrierobotern},
    venue = {Mannheim, Germany},
    }
  • A. Koelpin, F. Lurz, S. Linz, S. Mann, C. Will, and S. Lindner, "Six-Port Based Interferometry for Precise Radar and Sensing Application", Sensors, vol. 16, iss. 10, pp. 1-26, 2016. [DOI] [Bibtex]
    @article{koelpin2016,
    author = {Koelpin, Alexander and Lurz, Fabian and Linz, Sarah and Mann, Sebastian and Will, Christoph and Lindner, Stefan},
    publisher = {MDPI},
    cris = {https://cris.fau.de/converis/publicweb/publication/108125864},
    year = {2016},
    month = {09},
    doi = {10.3390/S16101556},
    faupublication = {yes},
    issn = {1424-8220},
    journaltitle = {Sensors},
    number = {10},
    pages = {1--26},
    peerreviewed = {Yes},
    shortjournal = {SENSORS-BASEL},
    title = {Six-Port Based Interferometry for Precise Radar and Sensing Application},
    volume = {16},
    }
  • R. Weigel, F. Lurz, S. Lindner, S. Mann, S. Linz, and A. Koelpin, "A Fast and Precise Six-Port-based IFM Technique for Wireless Resonant SAW Sensing" in IEEE International Ultrasonics Symposium (IUS), Tours, France, 2016, pp. 1-4. [DOI] [Bibtex]
    @inproceedings{weigel2016a,
    author = {Weigel, Robert and Lurz, Fabian and Lindner, Stefan and Mann, Sebastian and Linz, Sarah and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE International Ultrasonics Symposium (IUS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/122828684},
    year = {2016},
    month = {09},
    day = {18},
    doi = {10.1109/ULTSYM.2016.7728613},
    eventdate = {2016-09-18/2016-09-21},
    faupublication = {yes},
    pages = {1--4},
    peerreviewed = {Yes},
    title = {A Fast and Precise Six-Port-based IFM Technique for Wireless Resonant SAW Sensing},
    venue = {Tours, France},
    }
  • C. Will, S. Linz, S. Mann, F. Lurz, S. Lindner, R. Weigel, and A. Koelpin, "A 24 GHz Waveguide based Radar System using an Advanced Algorithm for I/Q Offset Cancelation" in Kleinheubacher Tagung, Miltenberg, Germany, 2016. [Bibtex]
    @inproceedings{will2016a,
    author = {Will, Christoph and Linz, Sarah and Mann, Sebastian and Lurz, Fabian and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    publisher = {URSI},
    booktitle = {Kleinheubacher Tagung},
    cris = {https://cris.fau.de/converis/publicweb/publication/108121244},
    year = {2016},
    month = {09},
    day = {26},
    eventdate = {2016-09-26/2016-09-28},
    faupublication = {yes},
    peerreviewed = {Yes},
    title = {A 24 GHz Waveguide based Radar System using an Advanced Algorithm for I/Q Offset Cancelation},
    type = {Abstract zum Vortrag},
    venue = {Miltenberg, Germany},
    }
  • F. Lurz, S. Lindner, S. Mann, S. Linz, R. Weigel, and A. Koelpin, "Precise and Fast Frequency Determination of Resonant SAW Sensors by a Low-Cost Six-Port Interferometer" in IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Taipei, Taiwan, 2016, pp. 369-374. [DOI] [Bibtex]
    @inproceedings{lurz2016a,
    abstract = {Surface acoustic wave (SAW) resonators are used for a broad range of wireless sensing applications, some of them having high demands on the resolution as well as the measurement update rate. This paper presents a new interrogation method for precise and fast frequency determination of passive SAW resonators based on instantaneous frequency measurement (IFM) by a low-cost Six-Port interferometer. By using a delay line the frequency measurement is reduced to a phase measurement that can be instantaneously evaluated by the Six-Port structure. No complex signal processing is necessary providing high update rates and low hardware costs. A demonstrator in the 2.4 GHz frequency band shows the feasibility and the precision of the concept with measurement times of only a few microseconds.},
    author = {Lurz, Fabian and Lindner, Stefan and Mann, Sebastian and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE International Instrumentation and Measurement Technology Conference (I2MTC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108093524},
    year = {2016},
    month = {05},
    day = {23},
    doi = {10.1109/I2MTC.2016.7520390},
    eventdate = {2016-05-23/2016-05-26},
    faupublication = {yes},
    pages = {369--374},
    peerreviewed = {Yes},
    title = {Precise and Fast Frequency Determination of Resonant SAW Sensors by a Low-Cost Six-Port Interferometer},
    venue = {Taipei, Taiwan},
    }
  • S. Wibbing, S. Mann, F. Lurz, S. Erhardt, S. Lindner, R. Weigel, and A. Koelpin, "A cost-efficient 61 GHz high-resolution radar sensor for industrial positioning and distance measurement" in 21st International Conference on Microwave, Radar and Wireless Communications (MIKON), Krakau, Poland, 2016, pp. 1-4. [DOI] [Bibtex]
    @inproceedings{wibbing2016a,
    abstract = {In this paper a novel 61GHz radar sensor node for industrial positioning and distance measurement is presented. The sensor provides numerous functions enabling a broad range of signal processing technologies and is designed with regard to cost-efficient implementation only using commercial available components without limiting the area of possible applications. Beside the requirement analysis and system design, several measurements of antenna isolation and distance resolution are depicted and discussed.},
    author = {Wibbing, Sascha and Mann, Sebastian and Lurz, Fabian and Erhardt, Stefan and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {21st International Conference on Microwave, Radar and Wireless Communications (MIKON)},
    cris = {https://cris.fau.de/converis/publicweb/publication/124224584},
    year = {2016},
    month = {05},
    day = {09},
    doi = {10.1109/MIKON.2016.7491940},
    eventdate = {2016-05-09/2016-05-11},
    faupublication = {yes},
    isbn = {9781509022144},
    pages = {1--4},
    peerreviewed = {Yes},
    title = {A cost-efficient 61 GHz high-resolution radar sensor for industrial positioning and distance measurement},
    venue = {Krakau, Poland},
    }
  • F. Lurz, S. Mann, S. Linz, S. Lindner, R. Weigel, and A. Koelpin, "Detektion und Auswertung: Labview-basierte Echtzeitsignalverarbeitung für die Radarsensorik", pp. 56-57, 2016. [Bibtex]
    @other{lurz2016b,
    abstract = {Hochfrequenz-Radarsensoren sind eine viel\-versprechende Alternative zu herkömmlichen Anwesenheitssensoren. Der folgende Artikel beschreibt ein 24-GHz-Low-Power-Radarsystem und dessen Labview-basierte Echtzeitsignalverarbeitung. Durch die phasenbasierte Messung wird eine hohe Sensitivität des Systems erreicht, sodass auch statische Personen anhand ihrer Vitalparameter detektiert werden können.},
    author = {Lurz, Fabian and Mann, Sebastian and Linz, Sarah and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    publisher = {Hüthig GmbH},
    booktitle = {elektronik industrie 04/2016},
    cris = {https://cris.fau.de/converis/publicweb/publication/124154844},
    year = {2016},
    month = {04},
    faupublication = {yes},
    pages = {56--57},
    peerreviewed = {No},
    title = {Detektion und Auswertung: Labview-basierte Echtzeitsignalverarbeitung für die Radarsensorik},
    type = {Zeitungsartikel},
    url = {http://www.elektronik-industrie.de/2016/04/12/elektronik-industrie-042016/},
    }
  • S. Mann, S. Linz, S. Erhardt, S. Lindner, F. Lurz, H. Maune, R. Weigel, and A. Koelpin, "Differential Measuring Dual Six-Port Concept and Antenna Design for an Inline Foil Thickness Sensor" in German Microwave Conference (GeMiC), Bochum, Germany, 2016, pp. 165-168. [DOI] [Bibtex]
    @inproceedings{mann2016a,
    abstract = {Sensor elements play an important role in future manufacturing plants. This paper presents a solution for an foil thickness sensor for running production lines. Based on the elaborated Six-Port concept, a differential measuring concept is proposed and discussed. Furthermore, an end-fire antenna design for the addressed application is demonstrated and far field measurement results are shown and compared to simulation. Finally, interference effects between two antennas are experimentally investigated as a function of the relative rotation between two oppositely placed devices.},
    author = {Mann, Sebastian and Linz, Sarah and Erhardt, Stefan and Lindner, Stefan and Lurz, Fabian and Maune, Holger and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {German Microwave Conference (GeMiC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108104084},
    year = {2016},
    month = {03},
    day = {14},
    doi = {10.1109/GEMIC.2016.7461581},
    eventdate = {2016-03-14/2016-03-16},
    faupublication = {yes},
    pages = {165--168},
    peerreviewed = {Yes},
    title = {Differential Measuring Dual Six-Port Concept and Antenna Design for an Inline Foil Thickness Sensor},
    venue = {Bochum, Germany},
    }
  • S. Wibbing, F. Lurz, S. Mann, S. Lindner, S. Linz, R. Weigel, and A. Koelpin, "Determining Linearity of Wideband FMCW-Systems Based on Low-Cost Six-Port Technology" in German Microwave Conference (GeMiC), Bochum, 2016, pp. 389-392. [DOI] [Bibtex]
    @inproceedings{wibbing2016,
    abstract = {This paper describes a new method for high accuracy determination of instantaneous frequency and linearity of frequency modulated continuous wave systems. The presented setup reduces the frequency measurement to a phase measurement based on Six-Port interferometer with a delay line. To extend the range of possible input frequencies and power levels, a calibration method and the appropriate correction algorithm is introduced. Evaluation of linearity and frequency of the input signal is obtained without the use of computationally intensive Fourier transform which allows the signal processing based on low-cost micro-controllers.},
    author = {Wibbing, Sascha and Lurz, Fabian and Mann, Sebastian and Lindner, Stefan and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {German Microwave Conference (GeMiC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108112224},
    year = {2016},
    month = {03},
    day = {14},
    doi = {10.1109/GEMIC.2016.7461637},
    eventdate = {2016-03-14/2016-03-16},
    faupublication = {yes},
    pages = {389--392},
    peerreviewed = {Yes},
    title = {Determining Linearity of Wideband FMCW-Systems Based on Low-Cost Six-Port Technology},
    venue = {Bochum},
    }
  • F. Lurz, C. Dorn, S. Lindner, S. Linz, S. Mann, R. Weigel, and A. Koelpin, "Digital Phase Correction for Multiplexed ADCs in Low-Cost Six-Port Interferometers" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Austin, TX, USA, 2016, pp. 56-59. [DOI] [Bibtex]
    @inproceedings{lurz2016,
    author = {Lurz, Fabian and Dorn, Christian and Lindner, Stefan and Linz, Sarah and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/124169144},
    year = {2016},
    month = {01},
    day = {24},
    doi = {10.1109/WISNET.2016.7444321},
    eventdate = {2016-01-24/2016-01-27},
    faupublication = {yes},
    pages = {56--59},
    peerreviewed = {Yes},
    title = {Digital Phase Correction for Multiplexed ADCs in Low-Cost Six-Port Interferometers},
    venue = {Austin, TX, USA},
    }
  • S. Mann, F. Lurz, S. Linz, S. Lindner, C. Will, S. Wibbing, R. Weigel, and A. Koelpin, "Substrate Integrated Waveguide Fed Antenna for 61 GHz Ultra-Short-Range Interferometric Radar Systems" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Austin, TX, USA, 2016, pp. 64-66. [DOI] [Bibtex]
    @inproceedings{mann2016,
    abstract = {Radar sensors play a key role in today’s indus- trial automation. Being an alternative to frequency modulated continuous wave radar, Six-Port based radar sensors recently attracted the interest of the community as well as of the industry. This paper presents a 61 GHz Six-Port radar sensor for ultra-short range applications and a dedicated substrate integrate waveguide fed tapered slot antenna design. Due to an optimized design, the antenna allows for measurements in the direct near-zone of 0 mm to 10 mm without ambiguity effects. Making use of a spiral fitting operation, the presented measurement results show an absolute distance error of less than 100 µm.},
    author = {Mann, Sebastian and Lurz, Fabian and Linz, Sarah and Lindner, Stefan and Will, Christoph and Wibbing, Sascha and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108672564},
    year = {2016},
    month = {01},
    day = {24},
    doi = {10.1109/WISNET.2016.7444323},
    eventdate = {2016-01-24/2016-01-27},
    faupublication = {yes},
    keywords = {Interferometer; Six-Port; RADAR; phase measurement; nearfield sensor; millimeter-wave},
    number = {66},
    pages = {64--66},
    peerreviewed = {Yes},
    title = {Substrate Integrated Waveguide Fed Antenna for 61 GHz Ultra-Short-Range Interferometric Radar Systems},
    venue = {Austin, TX, USA},
    volume = {64},
    }
  • K. Staszek, S. Linz, F. Lurz, S. Mann, R. Weigel, and A. Koelpin, "Improved Calibration Procedure for Six-Port Based Precise Displacement Measurements" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Austin, TX, USA, 2016, pp. 60-63. [DOI] [Bibtex]
    @inproceedings{staszek2016,
    abstract = {In this paper an improved calibration procedure for six-port based displacement measurement radar is proposed. The entire system characterizati on is done only using several measurements of the target at kn own positions and no additional calibration standards a re required. The proposed calibration has been experim entally verified for a six-port based displacement measurem ent radar operating at 24 GHz. The performed measurements within the target position range 0 – 18.75 mm prove a significant to the other reported algorithms.},
    author = {Staszek, Kamil and Linz, Sarah and Lurz, Fabian and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108111784},
    year = {2016},
    month = {01},
    day = {24},
    doi = {10.1109/WISNET.2016.7444322},
    eventdate = {2016-01-24/2016-01-27},
    faupublication = {yes},
    keywords = {six-port; reflectometer; radar; calibration; technique; displacement measurements},
    pages = {60--63},
    peerreviewed = {Yes},
    title = {Improved Calibration Procedure for Six-Port Based Precise Displacement Measurements},
    venue = {Austin, TX, USA},
    }
  • C. Will, K. Shi, F. Lurz, R. Weigel, and A. Koelpin, "Instantaneous Heartbeat Detection using a Cross-Correlation based Template Matching for Continuous Wave Radar Systems" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Austin, TX, USA, 2016, pp. 31-34. [DOI] [Bibtex]
    @inproceedings{will2016,
    abstract = {Instantaneous heartbeat detection is necessary for an optimal patient monitoring in healthcare centers. Whereas electrocardiogram (ECG) and ballistocardiogram (BCG), for instance, are established methods for real time monitoring nowadays, contact-free systems are appreciated. Herewith, a 24 GHz continuous wave (CW) radar system with an intelligent signal processing is presented. Common heartbeat detection algorithms use the fast Fourier transform (FFT), and therefore require an adequate observation time window and rather detect an averaged heart rate. The proposed algorithm in contrast accomplishes the detection of single heart beats directly in the time domain with an insignificant delay. The core of that algorithm is a template matching using the cross-correlation method. In this paper, after describing the radar system with the novel signal processing, the presented system is compared to a commercial ECG product.},
    author = {Will, Christoph and Shi, Kilin and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108087804},
    year = {2016},
    month = {01},
    day = {24},
    doi = {10.1109/WISNET.2016.7444314},
    eventdate = {2016-01-24/2016-01-27},
    faupublication = {yes},
    keywords = {Radar interferometry; Biomedical signal processing; Template matching},
    pages = {31--34},
    peerreviewed = {Yes},
    title = {Instantaneous Heartbeat Detection using a Cross-Correlation based Template Matching for Continuous Wave Radar Systems},
    venue = {Austin, TX, USA},
    }

2015

  • C. Will, K. Shi, F. Lurz, R. Weigel, and A. Koelpin, "Intelligent Signal Processing Routine for Instantaneous Heart Rate Detection using a Six-Port Microwave Interferometer" in IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Nusa Dua, Bali, Indonesia, 2015, pp. 483-487. [DOI] [Bibtex]
    @inproceedings{will2015,
    abstract = {Instantaneous heart rate detection is one of the key parameters in medical vital parameter monitoring. In medical centers e.g., real time monitoring of the vital signs of a patient under surveillance is necessary. Nowadays, the dominant technologies are electrocardiogram (ECG) or ballistocardiogram (BCG), but the required direct contact to the person-under-surveillance is a common drawback of these sensors. In this paper, a Six-Port microwave interferometer is presented and used to detect the current heart rate of a person-under-test. An intelligent signal processing routing is proposed, that avoids the fast Fourier transform (FFT) due to the implicated longsome observation window and operates directly in the time domain instead. A commercial ECG product is used to proof the reliability of the presented signal processing routine to establish Six-Port microwave interferometers for instantaneous heart rate detection.},
    author = {Will, Christoph and Shi, Kilin and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/124139884},
    year = {2015},
    month = {11},
    day = {09},
    doi = {10.1109/ISPACS.2015.7432820},
    eventdate = {2015-11-09/2015-11-12},
    faupublication = {yes},
    keywords = {Six-Port; Interferometers; Biomedical signal processing; Heartbeat monitoring},
    pages = {483--487},
    peerreviewed = {Yes},
    title = {Intelligent Signal Processing Routine for Instantaneous Heart Rate Detection using a Six-Port Microwave Interferometer},
    venue = {Nusa Dua, Bali, Indonesia},
    }
  • F. Lurz, S. Mann, S. Linz, S. Lindner, R. Weigel, and A. Koelpin, "LabVIEW basierte Echtzeit-Signalverarbeitung für Low-Power-Radarsensorik," in Virtuelle Instrumente in der Praxis 2015, R. Jamal Rahman; Heinze, Ed., VDE-Verlag, 2015, pp. 245-248. [Bibtex]
    @inbook{lurz2015a,
    abstract = {Hochfrequenz-Radarsensoren haben sich in letzter Zeit als eine vielversprechende Alternative zu herkömmlichen Anwesenheitssensoren wie Passiv-Infrarot oder Ultraschall bewährt. Aufgrund ihrer hohen Ortsauflösung können Radarsysteme eine drahtlose Detektion von Vitalparametern, wie Herzschlag oder Atmung, durchführen und so auch sich nicht bewegende Personen detektieren. Dieses Dokument beschreibt die LabVIEW basierte Signalverarbeitung für ein 24 GHz Low-Power-Radarsystem. Für eine effiziente Evaluierung der Detektionsalgorithmen müssen diese unter weichen Echtzeitbedingungen ausgeführt werden, um ein verzögerungsfreies und flüssiges Feedback der graphischen Oberfläche zu erhalten.},
    author = {Lurz, Fabian and Mann, Sebastian and Linz, Sarah and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    editor = {Jamal, Rahman; Heinze, Ronald},
    language = {German},
    publisher = {VDE-Verlag},
    booktitle = {Virtuelle Instrumente in der Praxis 2015},
    cris = {https://cris.fau.de/converis/publicweb/publication/108047764},
    year = {2015},
    month = {10},
    faupublication = {yes},
    isbn = {9783800736690},
    pages = {245--248},
    peerreviewed = {Yes},
    title = {LabVIEW basierte Echtzeit-Signalverarbeitung für Low-Power-Radarsensorik},
    type = {Band aus einer Reihe},
    url = {https://www.vde-verlag.de/buecher/483669/virtuelle-instrumente-in-der-praxis-2015.html},
    }
  • F. Lurz, S. Mann, S. Linz, S. Lindner, R. Weigel, and A. Koelpin, "System- und Schaltungskonzepte für Low-Power-Radarsensorik zur Anwesenheitsdetektion" in Mikrosystemtechnik-Kongress (MST), Karlsruhe, Germany, 2015, pp. 274-277. [Bibtex]
    @inproceedings{lurz2015b,
    author = {Lurz, Fabian and Mann, Sebastian and Linz, Sarah and Lindner, Stefan and Weigel, Robert and Koelpin, Alexander},
    language = {German},
    booktitle = {Mikrosystemtechnik-Kongress (MST)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108046224},
    year = {2015},
    month = {10},
    day = {26},
    eventdate = {2015-10-26/2015-10-28},
    faupublication = {yes},
    isbn = {9783800741007},
    pages = {274--277},
    peerreviewed = {Yes},
    title = {System- und Schaltungskonzepte für Low-Power-Radarsensorik zur Anwesenheitsdetektion},
    venue = {Karlsruhe, Germany},
    }
  • A. Koelpin, F. Lurz, and R. Weigel, "Introduction in High-Resolution and Ultra-Low Power Distance Measurements by Microwave Interferometry" in IEEE International Microwave Symposium, Workshop on Modern radar systems for high resolution ranging, indoor localization, and vital signs detection, Phoenix, AZ, USA, 2015. [Bibtex]
    @inproceedings{koelpin2015,
    abstract = {Many civilian measurement applications can be realized by microwave interferometry. This radar architecture features low hardware and software complexity and can be optimized for highest distance resolutions in the micrometer regime combined with a measurement value update rate of several kilohertz or ultra-low power operation for, e.g., presence detection. Both approaches will be discussed in this talk. After introducing the basic technology and dependencies a detailed introduction to real hardware building blocks for the K band will be given. Also non-ideal effects and approaches for calibrating the system will be given. The talk will close with real world applications spreading from simple presence detection to precise distance measurements, vibration analysis and frequency determination.},
    author = {Koelpin, Alexander and Lurz, Fabian and Weigel, Robert},
    language = {English},
    booktitle = {IEEE International Microwave Symposium, Workshop on Modern radar systems for high resolution ranging, indoor localization, and vital signs detection},
    cris = {https://cris.fau.de/converis/publicweb/publication/108072624},
    year = {2015},
    month = {05},
    day = {17},
    eventdate = {2015-05-17/2015-05-22},
    faupublication = {yes},
    keywords = {Radar; Interferometry},
    peerreviewed = {unknown},
    title = {Introduction in High-Resolution and Ultra-Low Power Distance Measurements by Microwave Interferometry},
    type = {Abstract zum Vortrag},
    venue = {Phoenix, AZ, USA},
    }
  • S. Linz, F. Lurz, M. Sporer, S. Lindner, S. Mann, R. Weigel, and A. Koelpin, "Ultra-Short-Range Precise Displacement Measurement Setup with a Near Field Slot-Line Antenna and a Dedicated Spiral Calibration" in IEEE International Microwave Symposium, Phoenix, AZ, USA, 2015. [DOI] [Bibtex]
    @inproceedings{linz2015a,
    abstract = {This work introduces a precise measurement setup for displacement analysis in the near field of a tapered slot-line antenna from 0mm up to 20mm distance. Enhanced accuracy is achieved by a dedicated spiral reconstruction algorithm accounting for the near field effects. Moreover, the precision of the system in the micrometer range is guaranteed by four synchronous 24 bit analog-to-digital converters and a decimation factor of 10, leading to an overall update rate of 1 kHz.},
    author = {Linz, Sarah and Lurz, Fabian and Sporer, Michael and Lindner, Stefan and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {IEEE International Microwave Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/123899204},
    year = {2015},
    month = {05},
    day = {17},
    doi = {10.1109/MWSYM.2015.7167116},
    eventdate = {2015-05-17/2015-05-22},
    faupublication = {yes},
    isbn = {9781479982752},
    issn = {0149-645X},
    peerreviewed = {Yes},
    title = {Ultra-Short-Range Precise Displacement Measurement Setup with a Near Field Slot-Line Antenna and a Dedicated Spiral Calibration},
    venue = {Phoenix, AZ, USA},
    }
  • S. Mann, F. Lurz, R. Weigel, and A. Koelpin, "A High-Sensitivity Radar System Featuring Low Weight and Power Consumption", IEEE Microwave Magazine, vol. 16, iss. 2, pp. 99-105, 2015. [DOI] [Bibtex]
    @article{mann2015a,
    abstract = {In this article, a lightweight, low-power radar system for vibration monitoring has been presented. Based on a theoretical analysis of the competition scenario, an optimized system concept has been developed. The radar front end is able to sequentially evaluate the in-phase and quadrature component of the received signal with only a single hybrid coupler and power detector, reducing the overall weight to 5 g including the power-supply cable. A low duty cycle of 1% allowed the power to average 1.5 mW. As the minimum required sensitivity was limited to 0.5-mm oscillation amplitude, the most challenging parts in this student competition were, in our opinion, the tight power and weight optimizations. As the competition required only vibration detection butno ranging, a minimalistic system concept optimized for this application was proposed. The system features a free-running VCO sourced directly from the power supply without any further stabilization. For ranging applications, temperature changes as well as supply and tuning voltage variations at the VCO could have a severe impact on the system's accuracy. However, for pure vibration detection of a well-defined target, this is not a problem. Further improvements could be achieved when designing a customized 24-GHz oscillator, optimized for high efficiency [9] and fast turn-on time. In addition, the necessary number of measurements per second could be further investigated. Currently, with ten measurements per second, there is a convenient safety margin against false detections; however, fewer measurements would directly reduce the duty cycle and thus the average power consumption of the system.},
    author = {Mann, Sebastian and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    cris = {https://cris.fau.de/converis/publicweb/publication/123892604},
    year = {2015},
    month = {03},
    doi = {10.1109/MMM.2014.2367860},
    faupublication = {yes},
    issn = {1527-3342},
    journaltitle = {IEEE Microwave Magazine},
    keywords = {Low Power; Radar},
    number = {2},
    pages = {99--105},
    peerreviewed = {Yes},
    shortjournal = {IEEE MICROW MAG},
    title = {A High-Sensitivity Radar System Featuring Low Weight and Power Consumption},
    volume = {16},
    }
  • S. Lindner, F. Barbon, S. Linz, F. Lurz, S. Mann, R. Weigel, and A. Koelpin, "ADC Depending Limitations for Six-Port Based Distance Measurement Systems" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), San Diego, CA, USA, 2015, pp. 29-31. [DOI] [Bibtex]
    @inproceedings{lindner2015,
    abstract = {This publication will show some considerations for selecting an appropriate analog-digital-converter (ADC) in Six-Port based radar systems for distance measurements. It will be discussed how the ADC resolution is limiting the overall system range resolution. Furthermore, configurations with non-synchronous sampling of the four baseband signals and their influences on the system performance will be investigated.},
    author = {Lindner, Stefan and Barbon, Francesco and Linz, Sarah and Lurz, Fabian and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/123998864},
    year = {2015},
    month = {01},
    day = {25},
    doi = {10.1109/WISNET.2015.7127396},
    eventdate = {2015-01-25/2015-01-28},
    faupublication = {yes},
    keywords = {distance measurement; low-cost; radar; six-port; synchronous sampling; adc},
    pages = {29--31},
    peerreviewed = {Yes},
    title = {ADC Depending Limitations for Six-Port Based Distance Measurement Systems},
    venue = {San Diego, CA, USA},
    }
  • F. Lurz, S. Mann, S. Linz, S. Lindner, F. Barbon, R. Weigel, and A. Koelpin, "A Low Power 24 GHz Radar System for Occupancy Monitoring" in IEEE Radio and Wireless Symposium (RWS), San Diego, CA, USA, 2015, pp. 111-113. [DOI] [Bibtex]
    @inproceedings{lurz2015,
    abstract = {This paper presents a low power 24GHz Doppler radar system for presence detection and occupancy monitoring. It is based on a minimalistic hardware approach and is able to wirelessly sense human respiratory signals so that even non-moving persons can be detected. By intermittently measuring, the average power consumption could be significantly reduced down to e.g. 0.2mW for 20 measurements per second. Experiments verify that, due to the short wavelength, the single channel receiver limitations can be neglected when only a detection of human respiratory but no evaluation of the breathing frequency is necessary.},
    author = {Lurz, Fabian and Mann, Sebastian and Linz, Sarah and Lindner, Stefan and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108246204},
    year = {2015},
    month = {01},
    day = {25},
    doi = {10.1109/RWS.2015.7129719},
    eventdate = {2015-01-25/2015-01-28},
    faupublication = {yes},
    journaltitle = {IEEE Radio and Wireless Symposium, RWS},
    keywords = {Doppler radar; low-power; occupancy sensor},
    pages = {111--113},
    peerreviewed = {Yes},
    title = {A Low Power 24 GHz Radar System for Occupancy Monitoring},
    type = {Report},
    venue = {San Diego, CA, USA},
    }
  • S. Mann, S. Erhardt, S. Lindner, F. Lurz, S. Linz, F. Barbon, R. Weigel, and A. Koelpin, "Diode Detector Design for 61 GHz Substrate Integrated Waveguide Six-Port Radar Systems" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), San Diego, CA, USA, 2015, pp. 44-46. [DOI] [Bibtex]
    @inproceedings{mann2015,
    abstract = {Radar sensors play a key role in today’s industrial automation. Besides high accuracy, modern radar sensors have to feature high precision as well as challenging update rates. Six-Port wave correlators enable high phase resolution at high frequencies and therefore a high accuracy in radar applications. A Schottky diode detector applied to a substrate integrated waveguide (SIW) Six-Port is presented and measured. Furthermore, a displacement measurement using the SIW structure is performed.},
    author = {Mann, Sebastian and Erhardt, Stefan and Lindner, Stefan and Lurz, Fabian and Linz, Sarah and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/122822964},
    year = {2015},
    month = {01},
    day = {25},
    doi = {10.1109/WISNET.2015.7127415},
    eventdate = {2015-01-25/2015-01-28},
    faupublication = {yes},
    keywords = {Detector; interferometer,; millimeter-wave; Six-Port; RADAR; phase measurement},
    pages = {44--46},
    peerreviewed = {Yes},
    title = {Diode Detector Design for 61 GHz Substrate Integrated Waveguide Six-Port Radar Systems},
    venue = {San Diego, CA, USA},
    }
  • M. Sporer, F. Lurz, E. Schlücker, R. Weigel, and A. Koelpin, "Underwater Interferometric Radar Sensor for Distance and Vibration Measurement" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), San Diego, CA, USA, 2015, pp. 72-74. [DOI] [Bibtex]
    @inproceedings{sporer2015,
    abstract = {With the growing application of autonomous underwater vehicles (AUV) and underwater construction, i.e. robotic manipulator and maintenance systems, there is an increasing demand on precise underwater distance sensors. In this paper we present a low–cost, short–range and contactless sensor which uses electromagnetical (EM) waves for measuring distances underwater. The measurement system is based on interferometric radar applying a six– port interferometer and using EM waves at a frequency of 2.4GHz. Measurement series in fresh water have been carried out showing an precision of below 100 µm up to a distance of 35mm with only 8dBm of transmit power. Due to the high measurement rate the system can also be employed for vibration analysis. Additionally, by connecting a commercial 2.4GHz data transceiver, it is imaginable for the system to be simultaneously used for high data rate communication between e.g. AUV and unmanned underwater platforms (UUP).},
    author = {Sporer, Michael and Lurz, Fabian and Schlücker, Eberhard and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108052384},
    year = {2015},
    month = {01},
    day = {25},
    doi = {10.1109/WISNET.2015.7127405},
    eventdate = {2015-08-25/2015-08-28},
    faupublication = {yes},
    keywords = {underwater distance sensor; interferometer},
    pages = {72--74},
    peerreviewed = {Yes},
    title = {Underwater Interferometric Radar Sensor for Distance and Vibration Measurement},
    venue = {San Diego, CA, USA},
    }

2014

  • S. Linz, G. Vinci, S. Lindner, S. Mann, F. Lurz, F. Barbon, R. Weigel, and A. Koelpin, "I/Q Imbalance Compensation for Six-Port Interferometers in Radar Applications" in European Microwave Conference, Rom, Italy, 2014, pp. 746-749. [DOI] [Bibtex]
    @inproceedings{linz2014b,
    abstract = {Six-port interferometers are of great interest for displacement and vibration measurements in industrial as well as medical applications. However, they show offsets as well as amplitude and phase imbalances in their differential in-phase and quadrature signals, leading to inaccuracies of the measured displacement. If a very slow moving or vibrating target has to be monitored, an additional phase shifter for calibration is needed, so that the system’s errors can be compensated. A method for calculation and compensation of errors is presented and a compact and cost-efficient implementation of a phase shifter for 24 GHz Six-port interferometers is shown.},
    author = {Linz, Sarah and Vinci, Gabor and Lindner, Stefan and Mann, Sebastian and Lurz, Fabian and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {European Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/108040284},
    year = {2014},
    month = {10},
    day = {06},
    doi = {10.1109/EUMC.2014.6986542},
    eventdate = {2014-10-06/2014-10-09},
    faupublication = {yes},
    keywords = {Six-Port; Ellipse; IQ Imbalance; Interferometer},
    pages = {746--749},
    peerreviewed = {Yes},
    title = {I/Q Imbalance Compensation for Six-Port Interferometers in Radar Applications},
    venue = {Rom, Italy},
    }
  • F. Lurz, S. Lindner, S. Mann, S. Linz, F. Barbon, R. Weigel, and A. Koelpin, "A Low-Cost 2.4 GHz Frequency Measurement System for Microsecond Time Domain Pulses Based on Six-Port Technology" in European Microwave Conference, Rome, Italy, 2014, pp. 171-174. [DOI] [Bibtex]
    @inproceedings{lurz2014,
    abstract = {This paper presents a fast responding frequency measurement system based on Six-Port technology being able to determine precisely the frequency of very short time domain pulses of 1 µs and even less in the 2.4 GHz ISM band. By using a delay line the frequency measurement can be reduced to a phase measurement that can be quickly evaluated by the Six-Port network implemented with lumped components. Measurements show that the delay line, currently realized by a SMA cable, is extremely sensitive to temperature variations even in the range of 0.1 K. Thus, a temperature compensation method based on reference measurements is proposed and final measurements show that the system can reach a calibrated and temperature compensated error of only a few parts per million (ppm).},
    author = {Lurz, Fabian and Lindner, Stefan and Mann, Sebastian and Linz, Sarah and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    publisher = {EuMA},
    booktitle = {European Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/120685004},
    year = {2014},
    month = {10},
    day = {05},
    doi = {10.1109/EUMC.2014.6986397},
    eventdate = {2014-10-05/2014-10-10},
    faupublication = {yes},
    keywords = {Frequency measurement; Delay line; Six-Port},
    pages = {171--174},
    peerreviewed = {Yes},
    title = {A Low-Cost 2.4 GHz Frequency Measurement System for Microsecond Time Domain Pulses Based on Six-Port Technology},
    venue = {Rome, Italy},
    }
  • S. Linz, G. Vinci, S. Lindner, S. Mann, F. Lurz, F. Barbon, R. Weigel, and A. Koelpin, "Evaluation of the Impact of Antenna Parameters on the Performance of Six-Port Radar" in IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), Palm Beach, Aruba, 2014, pp. 300-303. [DOI] [Bibtex]
    @inproceedings{linz2014a,
    author = {Linz, Sarah and Vinci, Gabor and Lindner, Stefan and Mann, Sebastian and Lurz, Fabian and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/120728124},
    year = {2014},
    month = {08},
    doi = {10.1109/APWC.2014.6905552},
    eventtitle = {2014 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)},
    faupublication = {yes},
    isbn = {9781467356923},
    pages = {300--303},
    peerreviewed = {Yes},
    title = {Evaluation of the Impact of Antenna Parameters on the Performance of Six-Port Radar},
    venue = {Palm Beach, Aruba},
    }
  • A. Koelpin, S. Linz, F. Barbon, S. Lindner, S. Mann, F. Lurz, and R. Weigel, "Selftest Strategies for Microwave Interferometry for High-Precision Industrial Distance Measurements" in 20th International Conference on Microwaves, Radar, and Wireless Communications (MIKON), Gdansk, Poland, 2014. [DOI] [Bibtex]
    @inproceedings{koelpin2014a,
    abstract = {Microwave interferometry is a tool for precisely measuring distances or vibrations of a target in industrial applications. Distance resolutions in the range of few micrometers and measurement value update rates of several tens of kilohertz are feasible. These parameters can only be achieved, if careful compensation of non-ideal effects is conducted. In this paper the basics of Six-Port based microwave interferometry as well as selftest techniques will be presented. Exemplarily, linearization of the operating point of the diode detectors and frequency estimation of the radar signal will be shown.},
    author = {Koelpin, Alexander and Linz, Sarah and Barbon, Francesco and Lindner, Stefan and Mann, Sebastian and Lurz, Fabian and Weigel, Robert},
    booktitle = {20th International Conference on Microwaves, Radar, and Wireless Communications (MIKON)},
    cris = {https://cris.fau.de/converis/publicweb/publication/120696444},
    year = {2014},
    month = {06},
    day = {16},
    doi = {10.1109/MIKON.2014.6899991},
    eventdate = {2014-06-16/2014-06-18},
    faupublication = {yes},
    keywords = {Six-Port; Selftest},
    peerreviewed = {Yes},
    title = {Selftest Strategies for Microwave Interferometry for High-Precision Industrial Distance Measurements},
    venue = {Gdansk, Poland},
    }
  • S. Mann, S. Lindner, F. Lurz, F. Barbon, S. Linz, R. Weigel, and A. Koelpin, "A Microwave Interferometer Based Contactless Quasi-TEM Waveguide Position Encoder with Micrometer Accuracy" in IEEE MTT-S International Microwave Symposium (IMS), Tampa, FL, USA, 2014, pp. 1-4. [DOI] [Bibtex]
    @inproceedings{mann2014a,
    abstract = {Position measurement plays an important role in industrial process technology. Hereby, a waveguide based position sensor system for industrial applications is described. The proposed system features a Phase Locked Loop controlled 24 GHz signal source, an interferometric Six-Port receiver structure, a radar coupler, and a terminated quasi-TEM parallel plate waveguide structure. Furthermore, the system concept comprises a target, which can be applied both touching and contactless in the waveguide’s fringing field, reflecting a part of the transmitted wave. To obtain the target’s position information, the reflected wave is compared to a reference signal with respect to the relative phase difference. Hence, this phase shift is directly related to the position information.},
    author = {Mann, Sebastian and Lindner, Stefan and Lurz, Fabian and Barbon, Francesco and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE MTT-S International Microwave Symposium (IMS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108032144},
    year = {2014},
    month = {06},
    day = {01},
    doi = {10.1109/MWSYM.2014.6848655},
    eventdate = {2014-06-01/2014-06-06},
    faupublication = {yes},
    keywords = {Six-Port; position encoder; parallel plate waveguide; phase measurement},
    pages = {1--4},
    peerreviewed = {Yes},
    title = {A Microwave Interferometer Based Contactless Quasi-TEM Waveguide Position Encoder with Micrometer Accuracy},
    venue = {Tampa, FL, USA},
    }
  • S. Mann, F. Lurz, S. Lindner, F. Barbon, S. Linz, R. Weigel, and A. Koelpin, "61 GHz Millimeter Wave Voltage Variable Attenuator Based on Flip-Chip Mounted PIN-Diodes" in 20th International Conference on Microwaves, Radar, and Wireless Communications, Gdansk, Poland, 2014, pp. 1-4. [DOI] [Bibtex]
    @inproceedings{mann2014b,
    abstract = {Voltage Variable Attenuators play a major role in radio frequency system design. In this paper, a voltage variable attenuator concept suitable for the 61GHz ISM band is introduced and discussed. The proposed reflection type voltage variable attenuator has a maximum attenuation of 32 dB in the 61 GHz ISM-band range, and a low phase-shift of less than 10° for low and medium attenuation values. Furthermore, a bias network is presented featuring low reflection loss, and robustness against manufacturing tolerances. For verification purposes, a voltage variable attenuator as well as a reference transmission line have been fabricated and measured.},
    author = {Mann, Sebastian and Lurz, Fabian and Lindner, Stefan and Barbon, Francesco and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {20th International Conference on Microwaves, Radar, and Wireless Communications},
    cris = {https://cris.fau.de/converis/publicweb/publication/108032364},
    year = {2014},
    month = {06},
    day = {16},
    doi = {10.1109/MIKON.2014.6899966},
    eventdate = {2014-06-16/2014-06-18},
    faupublication = {yes},
    keywords = {61 GHz; attenuator; bias network; p-i-n diode; reflection type; variable attenuator},
    pages = {1--4},
    peerreviewed = {Yes},
    title = {61 GHz Millimeter Wave Voltage Variable Attenuator Based on Flip-Chip Mounted PIN-Diodes},
    venue = {Gdansk, Poland},
    }
  • S. Linz, F. Barbon, S. Mann, S. Lindner, F. Lurz, R. Weigel, and A. Koelpin, "Detector Design for Six-Port Radar" in CST European User Conference 2014, Berlin, Germany, 2014. [Bibtex]
    @inproceedings{linz2014,
    abstract = {The Six-port receiver has been intensively investigated in the last decades. Now, a first prototype Six-port radar sensor is available on the market. There is a great demand from the industry for the Six-port radar for applications like level metering, vibration analysis or positioning. A critical component of the Six-port radar is the detector. Good matching is necessary to avoid crosstalk between the four detectors of the Six-port and a perfect RF-short is needed to terminate the diode. In this talk, the design workflow for Schottky diode power detectors will be demonstrated. A first circuit design and simulation is done with Agilent Advanced Design System. The layout is imported into CST Microwave Studio as DXF file. By using a technology file, the 3D structure can be automatically generated. The results of both, time and frequency domain simulation, are compared with measurement results. With a circuit simulation in CST Design Studio comprising the Microwave Studio block, the manufacturer’s SPICE model is compared with measured S-Parameters of the Schottky diode. By using the diode’s measured S-Parameters and the frequency domain solver, a good agreement between simulation and measurement of the detector can be achieved.},
    author = {Linz, Sarah and Barbon, Francesco and Mann, Sebastian and Lindner, Stefan and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {CST Computer Simulation Technology AG},
    booktitle = {CST European User Conference 2014},
    cris = {https://cris.fau.de/converis/publicweb/publication/123234804},
    year = {2014},
    month = {05},
    eventtitle = {CST European User Conference},
    faupublication = {yes},
    keywords = {Six-Port; Radar; Power Detector},
    peerreviewed = {No},
    title = {Detector Design for Six-Port Radar},
    type = {Abstract zum Vortrag},
    url = {https://www.cst.com/Content/Events/Downloads/euc2014/5.4.1.pdf},
    venue = {Berlin, Germany},
    }

2013

  • S. Mueller, F. Lurz, R. Weigel, and A. Koelpin, "A High Performance Line Filter for Narrowband Power Line Communication Testbed Applications" in IEEE International Conference on Smart Grid Communications (SmartGridComm), Vancouver, Canada, 2013, pp. 690-695. [DOI] [Bibtex]
    @inproceedings{mueller2013,
    abstract = {This paper is presenting a two-stage line filter design, optimized for power line communication (PLC) testbed applications in the frequency range from 9 kHz to 500 kHz. The filter shows a very high differential mode attenuation together with a high input impedance on load-side. It enables to cope with the harsh noise characteristics of the PLC channel, as well as varying line access impedances in order to build up testbeds without any additional equipment. After exploring the filter’s architecture, SPICE simulations and measurement results are carried out, while the latter are discussed with respect to two commercial off-the-shelf filters.},
    author = {Mueller, Steffen and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE International Conference on Smart Grid Communications (SmartGridComm)},
    cris = {https://cris.fau.de/converis/publicweb/publication/123838704},
    year = {2013},
    month = {10},
    day = {21},
    doi = {10.1109/SMARTGRIDCOMM.2013.6688039},
    eventdate = {2013-10-21/2013-10-24},
    faupublication = {yes},
    keywords = {Power Line Communication; Smart Grid; Line Filter; Electromagnetic Interference; Testbed},
    pages = {690--695},
    peerreviewed = {Yes},
    title = {A High Performance Line Filter for Narrowband Power Line Communication Testbed Applications},
    venue = {Vancouver, Canada},
    }

2012

  • L. M. Reuter, R. Agethen, F. Lurz, G. Fischer, R. Weigel, and D. Kissinger, "A mobile microcontroller platform for sensor fusion and communication" in Embedded World Conference, Nürnberg, Germany, 2012, pp. 1-4. [Bibtex]
    @inproceedings{reuter2012,
    author = {Reuter, Lukas Michael and Agethen, Roman and Lurz, Fabian and Fischer, Georg and Weigel, Robert and Kissinger, Dietmar},
    booktitle = {Embedded World Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/121086504},
    year = {2012},
    month = {03},
    faupublication = {yes},
    pages = {1--4},
    peerreviewed = {No},
    title = {A mobile microcontroller platform for sensor fusion and communication},
    venue = {Nürnberg, Germany},
    }

2011

  • R. Agethen, F. Lurz, A. Schwarzmeier, G. Fischer, R. Weigel, and D. Kissinger, "An online telemetering system for mobile health parameter monitoring and medical assistance" in Internation Conference on Sensing Technology, Palmerston North, New Zealand, 2011, pp. 496-499. [DOI] [Bibtex]
    @inproceedings{agethen2011b,
    author = {Agethen, Roman and Lurz, Fabian and Schwarzmeier, Andre and Fischer, Georg and Weigel, Robert and Kissinger, Dietmar},
    language = {English},
    booktitle = {Internation Conference on Sensing Technology},
    cris = {https://cris.fau.de/converis/publicweb/publication/122403644},
    year = {2011},
    month = {11},
    day = {28},
    doi = {10.1109/ICSENST.2011.6137024},
    eventdate = {2011-11-28/2011-12-01},
    faupublication = {yes},
    pages = {496--499},
    peerreviewed = {Yes},
    title = {An online telemetering system for mobile health parameter monitoring and medical assistance},
    venue = {Palmerston North, New Zealand},
    }
  • R. Agethen, L. M. Reuter, F. Lurz, G. Fischer, R. Weigel, and D. Kissinger, "A compact medical platform for mobile sensor fusion and data communication" in IEEE International Workshop on Medical Measurements and Applications (MeMeA), Bari, Italy, 2011, pp. 111-114. [DOI] [Bibtex]
    @inproceedings{agethen2011,
    author = {Agethen, Roman and Reuter, Lukas Michael and Lurz, Fabian and Fischer, Georg and Weigel, Robert and Kissinger, Dietmar},
    language = {English},
    booktitle = {IEEE International Workshop on Medical Measurements and Applications (MeMeA)},
    cris = {https://cris.fau.de/converis/publicweb/publication/107756704},
    year = {2011},
    month = {05},
    day = {30},
    doi = {10.1109/MEMEA.2011.5966696},
    eventdate = {2011-05-30/2011-05-31},
    faupublication = {yes},
    pages = {111--114},
    peerreviewed = {Yes},
    title = {A compact medical platform for mobile sensor fusion and data communication},
    venue = {Bari, Italy},
    }

2010

  • A. Löffler and F. Lurz, "Eine RFID-basierte Roboternavigationslösung," in Virtuelle Instrumente in der Praxis: Begleitband zum Kongress VIP 2010, VDE Verlag, 2010, pp. 253-257. [Bibtex]
    @inbook{loeffler2010,
    author = {Löffler, Andreas and Lurz, Fabian},
    publisher = {VDE Verlag},
    booktitle = {Virtuelle Instrumente in der Praxis: Begleitband zum Kongress VIP 2010},
    cris = {https://cris.fau.de/converis/publicweb/publication/119070644},
    year = {2010},
    faupublication = {yes},
    isbn = {9783800732357},
    pages = {253--257},
    peerreviewed = {unknown},
    title = {Eine RFID-basierte Roboternavigationslösung},
    }

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