Staff

Dipl.-Ing. Sebastian Mann

Contact

  •  

About Sebastian Mann

Curriculum Vitae

Sebastian Mann was born in Nuremberg, Germany, in 1987. He received his Dipl.-Ing. (univ.) degree in electrical engineering, electronics engineering and information technology from the University of Erlangen-Nuremberg in 2012. Since August 2012, he is with the Institute for Electronics Engineering, University of Erlangen-Nuremberg, serving as a research engineer in the field of innovative radar technology for automotive and industrial applications. Sebastian Mann authored and co-authored more than 40 publications in his area of interest and serves as a reviewer for several journals and conferences. Furthermore, he is member of the IEEE, MTTS and the German VDE. Currently, his research interests are in the areas of microwave circuits and systems, local positioning, Six-Port technique, antenna design and short-range, high resolution radar.

Fields of activity

  • Passive Components in Substrate Integrated Waveguide Technology
  • Active Components in Substrate Integrated Waveguide Technology
  • System- and Circuitdesign in the centimeter- and millimeter frequency range
  • Continuous Wave radar in the ISM bands 24 GHz und 61 GHz
  • Development of antenna and sensor structures
  • Field simulation using CST Studio Suite
  • RF-Measurements up to 110 GHz (Network and Spectrum analysis)

Awards

  • 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},
    }
  • 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},
    }
  • 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},
    }
  • F. Lurz and S. Mann, 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 = {Lurz, Fabian and Mann, Sebastian},
    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},
    }
  • S. Mann, S. Lindner, F. Barbon, S. Linz, A. Talai, R. Weigel, and A. Koelpin, Best Paper Award, IEEE Topical Conference on Wireless Sensors and Sensor Networks, 2014. [Bibtex]
    @prize{mann_prize_2014,
    author = {Mann, Sebastian and Lindner, Stefan and Barbon, Francesco and Linz, Sarah and Talai, Armin and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks},
    cris = {mann_prize_2014},
    year = {2014},
    month = {01},
    day = {23},
    title = {Best Paper Award},
    }
  • A. Talai, S. Mann, R. Weigel, and A. Koelpin, Second Best Paper Award, IEEE Topical Conference on Wirless Sensors and Sensor Networks, 2014. [Bibtex]
    @prize{talai_prize_2014,
    abstract = {Water Temperature Measurement by Microwave Six-Port Interferometry at 24 GHz},
    author = {Talai, Armin and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE Topical Conference on Wirless Sensors and Sensor Networks},
    cris = {talai_prize_2014},
    year = {2014},
    month = {01},
    day = {21},
    title = {Second Best Paper Award},
    }

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.

Patents

  • S. Lindner, A. Koelpin, S. Linz, S. Mann, F. Barbon, E. Halder, and P. Dingler, Verfahren zur Messung der Frequenz eines Signals sowie elektrisches Messsystem, 2013. [Bibtex]
    @patent{lindner_patent_2013,
    author = {Lindner, Stefan and Koelpin, Alexander and Linz, Sarah and Mann, Sebastian and Barbon, Francesco and Halder, Ernst and Dingler, Peter},
    cris = {lindner_patent_2013},
    year = {2013},
    month = {05},
    number = {DE102013209364A1},
    title = {Verfahren zur Messung der Frequenz eines Signals sowie elektrisches Messsystem},
    type = {patent},
    url = {http://ip.com/pat/DE102013209364A1},
    }
  • A. Koelpin, S. Mann, G. Vinci, S. Lindner, F. Barbon, E. Halder, and P. Dingler, Elektrisches Messsystem, 2013. [Bibtex]
    @patent{koelpin_patent_2013,
    author = {Koelpin, Alexander and Mann, Sebastian and Vinci, Gabor and Lindner, Stefan and Barbon, Francesco and Halder, Ernst and Dingler, Peter},
    cris = {koelpin_patent_2013},
    year = {2013},
    month = {02},
    number = {DE102013202765B4},
    title = {Elektrisches Messsystem},
    type = {patent},
    url = {http://ip.com/pat/DE102013202765B4},
    }

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.

Publications

2018

  • 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 IEEE Radio Wireless Symposium, Anaheim, 2018 (to be published). [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 = {IEEE Radio Wireless Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/1071657},
    year = {2018},
    month = {01},
    day = {14},
    eventdate = {2018-01-14/2018-01-17},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {unknown},
    title = {Microstrip-to-Waveguide Transition in Planar Form Using a Substrate Integrated Waveguide},
    type = {Konferenzschrift},
    venue = {Anaheim},
    }

2017

  • [DOI] 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. [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/1061649},
    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 = {Yes},
    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},
    }
  • [DOI] 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. [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/1060641},
    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},
    }
  • [DOI] 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. [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/1060635},
    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},
    }
  • [DOI] 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, Arizona, USA, 2017. [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/1060634},
    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, Arizona, USA},
    }

2016

  • [DOI] S. Linz, F. Oesterle, S. Lindner, S. Mann, R. Weigel, and A. Koelpin, "Test Method for Contactless On-wafer MEMS Characterization and Production Monitoring", IEEE Transactions on Microwave Theory and Techniques, vol. 64, iss. 11, pp. 3918-3926, 2016. [Bibtex]
    @article{linz2016,
    author = {Linz, Sarah and Oesterle, Florian and Lindner, Stefan and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060258},
    year = {2016},
    month = {11},
    doi = {10.1109/TMTT.2016.2612664},
    faupublication = {yes},
    issn = {0018-9480},
    journaltitle = {IEEE Transactions on Microwave Theory and Techniques},
    number = {11},
    pages = {3918--3926},
    peerreviewed = {Yes},
    shortjournal = {IEEE T MICROW THEORY},
    title = {Test Method for Contactless On-wafer MEMS Characterization and Production Monitoring},
    volume = {64},
    }
  • 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/1060244},
    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},
    }
  • [DOI] 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. [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/1060312},
    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},
    }
  • [DOI] 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. [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/1060247},
    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/1060304},
    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},
    }
  • [DOI] 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. [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/1060252},
    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},
    }
  • [DOI] 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. [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/1060243},
    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/1060251},
    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/},
    }
  • [DOI] 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, 2016, pp. 165-168. [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/1060264},
    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},
    }
  • [DOI] A. Talai, S. Mann, R. Weigel, and A. Koelpin, "A Grounded Coplanar Waveguide Resonator Based In-Line Material Characterization Sensor" in German Microwave Conference (GeMIC), Bochum, 2016, pp. 457-460. [Bibtex]
    @inproceedings{talai2016,
    abstract = {Microwave Materials such as Rogers RO3003 are subject to process-related fluctuations in terms of the relative permittivity. The behavior of high frequency circuits like patchantenna arrays and their distribution networks is dependent on the effective wavelength. Therefore, fluctuations of the relative permittivity will influence the resonance frequency and antenna beam direction. This paper presents a grounded coplanar waveguide based sensor, which can measure the relative permittivity at 77GHz, as well as at other resonance frequencies, by applying it on top of the manufactured depaneling. In addition, the sensor is robust against floating ground metallizations on inner printed circuit board layers, which are typically distributed over the entire surface below antennas.},
    author = {Talai, Armin and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {German Microwave Conference (GeMIC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060309},
    year = {2016},
    month = {03},
    day = {14},
    doi = {10.1109/GEMIC.2016.7461654},
    eventdate = {2016-03-14/2016-03-16},
    faupublication = {yes},
    keywords = {Antenna Array; Grounded CoplanarWaveguide; Differential Frequency; Electromagnetic Simulation; Floating Ground; Material Characterization; Relative Permittivity},
    pages = {457--460},
    peerreviewed = {Yes},
    title = {A Grounded Coplanar Waveguide Resonator Based In-Line Material Characterization Sensor},
    venue = {Bochum},
    }
  • [DOI] 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. [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/1060278},
    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},
    }
  • [DOI] 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, Texas, USA, 2016, pp. 56-59. [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/1060290},
    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, Texas, USA},
    }
  • [DOI] 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. [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/1060299},
    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},
    }
  • [DOI] K. Staszek, S. Linz, F. Lurz, S. Mann, R. Weigel, and A. Koelpin, "Improved Calibration Procedure for Six-Port Based Precise Displacement Measurements" in Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Austin, TX, USA, 2016, pp. 60-63. [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 = {Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060277},
    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},
    }
  • [DOI] A. Talai, G. Gold, M. Frank, S. Mann, R. Weigel, and A. Koelpin, "A Coplanar Waveguide Resonator Based In-Line Material Characterization Sensor for Bulk and Metallized Dielectrics", Frequenz, 2016. [Bibtex]
    @article{talai2016a,
    abstract = {Microwave Materials such as Rogers RO3003 are subject to process-related fluctuations in terms of the relative permittivity and dielectric loss. The behavior of high frequency circuits like patch-antenna arrays and their distribution networks is dependent on the effective wavelength. Therefore, fluctuations of the complex permittivity will influence the resonance frequency and beam direction of the antennas. This paper presents a grounded coplanar waveguide based sensor, which can measure the complex permittivity at 77 GHz, as well as at other resonance frequencies, by applying it on top of the manufactured depaneling. The relative permittivity of the material under test (MUT) is a function of the resonance frequency shift and the dielectric loss of the MUT can be determined by transmission amplitude variations at the resonances. In addition, the sensor is robust against floating ground metallizations on inner printed circuit board layers, which are typically distributed over the entire surface below antennas. Furthermore, the impact from conductor surface roughness on the measured permittivity values is determined using the Gradient Model.},
    author = {Talai, Armin and Gold, Gerald and Frank, Martin and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {Walter de Gruyter GmbH},
    cris = {https://cris.fau.de/converis/publicweb/publication/1055791},
    year = {2016},
    month = {01},
    doi = {10.1515/FREQ-2016-0201},
    faupublication = {yes},
    issn = {0016-1136},
    journaltitle = {Frequenz},
    peerreviewed = {Yes},
    shortjournal = {FREQUENZ},
    title = {A Coplanar Waveguide Resonator Based In-Line Material Characterization Sensor for Bulk and Metallized Dielectrics},
    }

2015

  • 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/1060172},
    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},
    }
  • 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/1060173},
    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},
    }
  • [DOI] 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. [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/1060233},
    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},
    }
  • [DOI] A. Talai, S. Mann, F. Steinhäußer, A. Bittner, U. Schmid, R. Weigel, and A. Koelpin, "A Semi Double-Ridged quasi TE-Waveguide based Microwave Bulk Material Characterization System" in IEEE MTT-S International Microwave Symposium (IMS), Phoenix, CA, USA, 2015, pp. 1-4. [Bibtex]
    @inproceedings{talai2015a,
    abstract = {Accurate microwave material characterization is essential for reliable high frequency circuit design. Therefore, various characterization techniques have been developed, comprising advantages and drawbacks for the respective conditions. In this paper, a material characterization system is presented, which enables a broadband measurement for both dielectric loss and relative permittivity of bulk substrates with variant geometrical dimensions. A semi double-ridged waveguide is used to measure the introduced phase shift and dampening due to a strip of material, allowing a combined evaluation of the complex permittivity by measurement and simulation.},
    author = {Talai, Armin and Mann, Sebastian and Steinhäußer, Frank and Bittner, Achim and Schmid, Ulrich and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE MTT-S International Microwave Symposium (IMS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060224},
    year = {2015},
    month = {05},
    day = {17},
    doi = {10.1109/MWSYM.2015.7166937},
    eventdate = {2015-05-17/2015-05-22},
    faupublication = {yes},
    keywords = {Material Characterization; Phase Measurement; Ridged Waveguide; Relative Permittivity},
    pages = {1--4},
    peerreviewed = {Yes},
    title = {A Semi Double-Ridged quasi TE-Waveguide based Microwave Bulk Material Characterization System},
    venue = {Phoenix, CA, USA},
    }
  • [DOI] 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. [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/1060181},
    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},
    }
  • [DOI] S. Lindner, F. Barbon, S. Linz, S. Mann, R. Weigel, and A. Koelpin, "Distance measurements and limitations based on guided wave 24 GHz dual tone Six-port radar", International Journal of Microwave and Wireless Technologies, vol. 7, iss. Special Issue 3-4, pp. 425-432, 2015. [Bibtex]
    @article{lindner2015a,
    abstract = {In the following, a continuous wave radar system based on the Six-port principle will be shown for measurement tasks at enclosed systems needing micrometer accuracy as well as high update rates like tank level monitoring or hydraulic cylinder piston control. To exceed the ambiguity limit of such an interferometric system, a dual tone approach is used. The system will be presented with measurement results at 24 GHz within a WR42 waveguide to prove the feasibility of the proposed concept. Furthermore, considerations on timing will show the potential as a low-latency system, capable of high measurement data update rates, and different influences on the system performance and limitations of such a system will be discussed in comparison to alternative setups.},
    author = {Lindner, Stefan and Barbon, Francesco and Linz, Sarah and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {Cambridge University Press},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060201},
    year = {2015},
    month = {02},
    doi = {10.1017/S1759078715000239},
    faupublication = {yes},
    issn = {1759-0795},
    journaltitle = {International Journal of Microwave and Wireless Technologies},
    number = {Special Issue 3-4},
    pages = {425--432},
    peerreviewed = {Yes},
    title = {Distance measurements and limitations based on guided wave 24 GHz dual tone Six-port radar},
    volume = {7},
    }
  • [DOI] 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. [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/1060219},
    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},
    }
  • [DOI] S. Linz, F. Oesterle, A. Talai, S. Lindner, S. Mann, F. Barbon, R. Weigel, and A. Koelpin, "100 GHz Reflectometer for Sensitivity Analysis of MEMS Sensors Comprising an Intermediate Frequency Six-port Receiver" in IEEE Topical Conference on Wireless Sensors and Sensor Networks, San Diego, USA, 2015, pp. 20-22. [Bibtex]
    @inproceedings{linz2015,
    abstract = {Due to the growing market for Micro Electro Mechanical Systems (MEMS), especially for the application in mobile electronic devices like cameras, phones or tablet computers, cost and time efficient test and evaluation systems are required for the production process. This work presents a novel measurement setup for MEMS microphones, that allows an inline, contactless evaluation of the microphones' mechanical sensitivity at an early stage of the manufacturing process. A heterodyne receiver with a Six-port demodulator is deployed for displacement detection with micrometer resolution. Since the Six-port demodulator allows very high sampling rates only limited by the analog-to-digital converter, short measurement times can be achieved.},
    author = {Linz, Sarah and Oesterle, Florian and Talai, Armin and Lindner, Stefan and Mann, Sebastian and Barbon, Francesco 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/1060176},
    year = {2015},
    month = {01},
    day = {25},
    doi = {10.1109/WISNET.2015.7127403},
    eventdate = {2015-01-25/2015-01-28},
    faupublication = {yes},
    keywords = {MEMS; Six-Port; Microwave Interferometer; W-band; Contactless Testing; Pull-in; Mechanical Sensitivity},
    pages = {20--22},
    peerreviewed = {Yes},
    title = {100 GHz Reflectometer for Sensitivity Analysis of MEMS Sensors Comprising an Intermediate Frequency Six-port Receiver},
    venue = {San Diego, USA},
    }
  • [DOI] 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. [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/1060677},
    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 = {undefined},
    venue = {San Diego, CA, USA},
    }
  • [DOI] 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. [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/1060215},
    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},
    }

2014

  • [DOI] F. Barbon, S. Lindner, S. Mann, S. Linz, A. Koelpin, and R. Weigel, "Extended Range Distance Measurements Based on Frequency and Power Compensated Six-Port Receiver" in 44th European Microwave Conference (EuMC), Rom, Italy, 2014, pp. 742-745. [Bibtex]
    @inproceedings{barbon2014a,
    abstract = {Six-Port interferometers for distance measurement show a low cost solution able to operate in harsh environment where other solutions are not suitable. The increase of the distance range requires new calibration strategies in order to compensate the signals’ high dynamic power range. Here, an enhanced Six-Port receiver is presented having the capability of sensing the frequency of the reference signal and featuring a dynamic compensation of the power levels of the signals fed to the interferometer. These attributes allow the receiver to increase the distance detection range.},
    author = {Barbon, Francesco and Lindner, Stefan and Mann, Sebastian and Linz, Sarah and Koelpin, Alexander and Weigel, Robert},
    publisher = {EUMA},
    booktitle = {44th European Microwave Conference (EuMC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060089},
    year = {2014},
    month = {10},
    day = {06},
    doi = {10.1109/EUMC.2014.6986541},
    eventdate = {2014-10-06/2014-10-09},
    faupublication = {yes},
    keywords = {Six-Port; Frequency estimation; long range; radar},
    pages = {742--745},
    peerreviewed = {Yes},
    title = {Extended Range Distance Measurements Based on Frequency and Power Compensated Six-Port Receiver},
    venue = {Rom, Italy},
    }
  • [DOI] S. Lindner, F. Barbon, S. Linz, S. Mann, R. Weigel, and A. Koelpin, "Distance Measurements Based on Guided Wave 24 GHz Dual Tone Six-Port Radar" in 11th European Radar Conference (EuRAD), Rom, Italy, 2014, pp. 57-60. [Bibtex]
    @inproceedings{lindner2014,
    abstract = {In the following, a continuous wave (cw) radar system based on the Six-Port principle will be shown for measurement tasks at enclosed systems needing micrometer accuracy as well as high update rates like tank level monitoring or hydraulic cylinder piston control. To exceed the ambiguity limit of such an interferometric system a dual tone approach is used, extending the unambiguity range to several wavelengths. The system will be presented with measurement results at 24 GHz within a WR42 waveguide to prove the feasibility of the proposed concept.},
    author = {Lindner, Stefan and Barbon, Francesco and Linz, Sarah and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {11th European Radar Conference (EuRAD)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060121},
    year = {2014},
    month = {10},
    day = {08},
    doi = {10.1109/EURAD.2014.6991206},
    eventdate = {2014-10-08/2014-10-10},
    faupublication = {yes},
    keywords = {distance measurement; interferometry; phase measurement; radar; Six-Port; Waveguide},
    pages = {57--60},
    peerreviewed = {Yes},
    title = {Distance Measurements Based on Guided Wave 24 GHz Dual Tone Six-Port Radar},
    venue = {Rom, Italy},
    }
  • [DOI] 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. [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/1060135},
    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},
    }
  • [DOI] 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. [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/1060056},
    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},
    }
  • [DOI] 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. [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/1060134},
    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},
    }
  • [DOI] 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. [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/1060088},
    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},
    }
  • [DOI] 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. [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/1060069},
    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},
    }
  • [DOI] 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. [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/1060070},
    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},
    }
  • G. Vinci, S. Linz, S. Mann, S. Lindner, F. Barbon, R. Weigel, and A. Koelpin, "A Six-Port Radar System for Precise Distance Measurements and Vibration Monitoring in Industrial Environments" in Sensors and Measuring Systems; 17. ITG/GMA Symposium, Nürnberg, 2014, pp. 1-5. [Bibtex]
    @inproceedings{vinci2014,
    abstract = {The Six-Port receiver has been subject of several investigations in the last years especially for radar applications in different areas, from accurate contactless vibration analysis, through automotive radar calibration to remote breath and heartbeat monitoring. The advantages of the Six-Port receiver such as excellent phase discrimination, trivial signal processing and low circuit complexity as well as cost, are the features that lead the radar industry to further development of this technology. A joint project involving the University of Erlangen-Nuremberg and InnoSenT GmbH (Innovative Sensor Technology), led to the development of a highly accurate, compact and versatile Six-Port radar module aiming at a reliable high-integration of all subcomponents such as antenna, Six-Port front-end, baseband circuitry and digital signal processing.},
    author = {Vinci, Gabor and Linz, Sarah and Mann, Sebastian and Lindner, Stefan and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    publisher = {VDE},
    booktitle = {Sensors and Measuring Systems; 17. ITG/GMA Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060106},
    year = {2014},
    month = {06},
    day = {03},
    eventdate = {2014-06-03/2014-06-04},
    faupublication = {yes},
    isbn = {9783800736225},
    keywords = {Six-Port; Radar; Vibration Monitoring; Industrial Environments; compact sensor},
    pages = {1--5},
    peerreviewed = {Yes},
    title = {A Six-Port Radar System for Precise Distance Measurements and Vibration Monitoring in Industrial Environments},
    url = {http://ieeexplore.ieee.org/document/6856672},
    venue = {Nürnberg},
    }
  • 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/1060067},
    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 = {undefined},
    url = {https://www.cst.com/Content/Events/Downloads/euc2014/5.4.1.pdf},
    venue = {Berlin, Germany},
    }
  • A. Koelpin, S. Mann, S. Lindner, S. Linz, F. Barbon, and R. Weigel, "Selbstteststrategien für Mikrowellen-Interferometrie zur hoch-genauen industriellen Abstandsmessung" in Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ), Bad Staffelstein, 2014. [Bibtex]
    @inproceedings{koelpin2014,
    author = {Koelpin, Alexander and Mann, Sebastian and Lindner, Stefan and Linz, Sarah and Barbon, Francesco and Weigel, Robert},
    booktitle = {Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060122},
    year = {2014},
    month = {02},
    day = {23},
    eventdate = {2014-02-23/2014-02-25},
    faupublication = {yes},
    peerreviewed = {No},
    title = {Selbstteststrategien für Mikrowellen-Interferometrie zur hoch-genauen industriellen Abstandsmessung},
    type = {Abstract zum Vortrag},
    venue = {Bad Staffelstein},
    }
  • [DOI] F. Barbon, S. Lindner, S. Mann, S. Linz, R. Weigel, and A. Koelpin, "Fast In-Situ Diode Detector Characterization for Six-Port Interferometer Receivers" in Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), New Port Beach, CA, USA, 2014, pp. 13-15. [Bibtex]
    @inproceedings{barbon2014,
    abstract = {Six-Port receivers require a precise power measurement of all their four output channels. However, due to temperature drift, fabrication and component tolerances the detectors' performance may have some degradation, which limits the measurement accuracy. Thus, an in-situ detector characterization is necessary. In this paper, a fast and simple solution for estimating the diode detectors' characteristics is presented, which is ideal for Six-Port diode power detectors. This method is fast and can be easily implemented on a microcontroller.},
    author = {Barbon, Francesco and Lindner, Stefan and Mann, Sebastian and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060104},
    year = {2014},
    month = {01},
    day = {19},
    doi = {10.1109/WISNET.2014.6825501},
    eventdate = {2014-01-19/2014-01-23},
    faupublication = {yes},
    keywords = {six-port; diode detector; power measurement; characterization; in-situ},
    pages = {13--15},
    peerreviewed = {Yes},
    title = {Fast In-Situ Diode Detector Characterization for Six-Port Interferometer Receivers},
    venue = {New Port Beach, CA, USA},
    }
  • [DOI] S. Mann, S. Lindner, S. Linz, F. Barbon, A. Talai, R. Weigel, and A. Koelpin, "A Tank Level Sensor Based on Six-Port Technique Comprising a quasi-TEM Waveguide" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Newport Beach, CA, USA, 2014, pp. 4-6. [Bibtex]
    @inproceedings{mann2014,
    abstract = {Robust tank level monitoring is an important issue in chemical and process industry and a challenging task if high accuracy has to be reached. The proposed sensor structure consists of a quasi-TEM mode waveguide on the one hand and an interferometric Six-Port receiver structure on the other hand. The waveguide structure itself in combination with the liquid to be monitored acts as a reflection phase shifter. By superposing the reflected and the transmitted electromagnetic wave within a passive structure, the relative phase between both signals can be accurately obtained by means of the Six-Port principle. Thus, a change of the liquid level is directly related to the relative phase shift monitored by the Six-Port interferometer. In contrast to antenna based tank level sensors, the hereby presented system concept makes use of a novel waveguide structure. therefore, it is not sensitive to multi-target scenarios and multipath propagation.},
    author = {Mann, Sebastian and Lindner, Stefan and Linz, Sarah and Barbon, Francesco and Talai, Armin 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/1060116},
    year = {2014},
    month = {01},
    day = {19},
    doi = {10.1109/WISNET.2014.6825512},
    eventdate = {2014-01-19/2014-01-23},
    faupublication = {yes},
    keywords = {Six-Port; Interferometer; tank; level monitoring; parallel plate waveguide,; RADAR; microwave measurement},
    pages = {4--6},
    peerreviewed = {Yes},
    title = {A Tank Level Sensor Based on Six-Port Technique Comprising a quasi-TEM Waveguide},
    venue = {Newport Beach, CA, USA},
    }
  • [DOI] A. Talai, S. Mann, R. Weigel, and A. Koelpin, "Water Temperature Measurement by Microwave Six-Port Interferometry at 24 GHz" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), New Port Beach, CA, USA, 2014, pp. 10-12. [Bibtex]
    @inproceedings{talai2014,
    abstract = {Microwave interferometry enables the possibility of highly accurate distance measurements by evaluating phase differences. The reflected power is a function of the effective radar cross-section, the measurement distance, and the attenuation in air. An irradiated plain water surface shows a temperaturedependent behavior by means of the reflected power. This is due to the fact that the complex permittivity of water, as well as the refractive index, strongly depends on the water temperature within the 24 GHz Industrial, Scientific and Medical (ISM) band. Consequently, the effective radar cross-section depends on the temperature as well. This paper describes a method of monitoring the water temperature as a side effect of an interferometric radar in Six-Port technology for water level measurements.},
    author = {Talai, Armin 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/1060120},
    year = {2014},
    month = {01},
    day = {19},
    doi = {10.1109/WISNET.2014.6825498},
    eventdate = {2014-01-19/2014-01-23},
    faupublication = {yes},
    pages = {10--12},
    peerreviewed = {Yes},
    title = {Water Temperature Measurement by Microwave Six-Port Interferometry at 24 GHz},
    venue = {New Port Beach, CA, USA},
    }

2013

  • F. Barbon, S. Lindner, S. Mann, S. Linz, R. Weigel, and A. Koelpin, "Characterization In-Situ of Diode Detectors for Six-Port receivers" in Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ), Bad Staffelstein, 2013. [Bibtex]
    @inproceedings{barbon2013,
    abstract = {Six-Port receivers require a precise power mea- surement thus a characterization in-situ of its power detector is necessary. The industrial working ambient requires a constant performance monitoring due to temperature drift, fabrication and component tolerances. The detectors’ performance may have some degradation, which limits the measurement accuracy. Thus, an in-situ detector characterization is necessary. In this paper, a fast and simple solution for estimating the diode detectors’ char- acteristics is presented, which is ideal for Six-Port diode power detectors. This method is fast and can be easily implemented on a microcontroller.},
    author = {Barbon, Francesco and Lindner, Stefan and Mann, Sebastian and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {GMM, ITG},
    booktitle = {Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060023},
    year = {2013},
    month = {12},
    faupublication = {yes},
    keywords = {six-port; diode detector; power measurement; in-situ},
    peerreviewed = {Yes},
    title = {Characterization In-Situ of Diode Detectors for Six-Port receivers},
    venue = {Bad Staffelstein},
    }
  • [DOI] S. Linz, G. Vinci, S. Mann, S. Lindner, F. Barbon, R. Weigel, and A. Koelpin, "A Compact, Versatile Six-Port Radar Module for Industrial and Medical Applications", Journal of Electrical and Computer Engineering, vol. 2013, pp. 1-10, 2013. [Bibtex]
    @article{linz2013b,
    abstract = {The Six-port receiver has been intensively investigated in the last decade to be implemented as an alternative radar architecture. Plenty of current scientific publications demonstrate the effectiveness and versatility of the Six-port radar for special industrial, automotive and medical applications, ranging from accurate contactless vibration analysis, through automotive radar calibration to remote breath and heartbeat monitoring. Its highlights, such as excellent phase discrimination, trivial signal processing, low circuit complexity and cost have lately drawn the attention of companies working with radar technology. A joint project involving the University of Erlangen-Nuremberg and InnoSenT GmbH (Innovative Sensor Technology), led to the development of a highly accurate, compact and versatile Six-port radar module aiming at a reliable high-integration of all subcomponents such as antenna, Six-port front-end, baseband circuitry and digital signal processing in one single package. Innovative aspects in the RF front-end design as well as in the integration strategy are hereby presented, together with a system overview and measurement results.},
    author = {Linz, Sarah and Vinci, Gabor and Mann, Sebastian and Lindner, Stefan and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    publisher = {Hindawi Publishing Corporation},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060046},
    year = {2013},
    month = {12},
    doi = {10.1155/2013/382913},
    faupublication = {yes},
    issn = {2090-0147},
    journaltitle = {Journal of Electrical and Computer Engineering},
    pages = {1--10},
    peerreviewed = {Yes},
    title = {A Compact, Versatile Six-Port Radar Module for Industrial and Medical Applications},
    volume = {2013},
    }
  • S. Linz, G. Vinci, S. Lindner, S. Mann, F. Barbon, R. Weigel, and A. Koelpin, "A Compact, Versatile Six-Port Radar Sensor for Industrial and Medical Applications" in IEEE Sensors, Baltimore, USA, 2013. [Bibtex]
    @inproceedings{linz2013a,
    abstract = {The Six-Port receiver can be implemented as an alternative radar architecture. Plenty of current scientific publications demonstrate the effectiveness and versatility of the Six-Port radar for industrial, automotive and medical applications: accurate contactless vibration analysis, distance measurements as well as remote breath and heartbeat monitoring. Its highlights are excellent phase discrimination, trivial signal processing, low circuit complexity and cost. A joint project involving the University of Erlangen-Nuremberg and InnoSenT GmbH led to the development of iSYS-5001, a compact, versatile Six-Port radar module aiming at a reliable high-integration of all subcomponents in one single sensor unit.},
    author = {Linz, Sarah and Vinci, Gabor and Lindner, Stefan and Mann, Sebastian and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {IEEE Sensors},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060047},
    year = {2013},
    month = {11},
    eventtitle = {IEEE Sensors},
    faupublication = {yes},
    peerreviewed = {No},
    title = {A Compact, Versatile Six-Port Radar Sensor for Industrial and Medical Applications},
    type = {Abstract zum Poster},
    venue = {Baltimore, USA},
    }
  • A. Koelpin, G. Vinci, S. Lindner, S. Mann, F. Barbon, S. Linz, F. Oesterle, and R. Weigel, "Six-Port Technology for Precise Geometrical Measurement Applications - an Overview" in European Microwave Conference (EuMC), Nürnberg, 2013, pp. 1587-1590. [Bibtex]
    @inproceedings{koelpin2013b,
    abstract = {Instrumentation for precise geometrical measurements based on radar technology get more and more important for industrial applications. Besides distance, determining an angle or modal analysis of vibrations are key issues for automation in modern fabrication. Industrial applications put high demands on the measurement systems, not only regarding precision but also concerning operation in harsh environments and low cost implementations. In the last years Six-Port technology got more and more important for these applications. This paper will give an overview of Six-Port technique for geometrical distance measurements.},
    author = {Koelpin, Alexander and Vinci, Gabor and Lindner, Stefan and Mann, Sebastian and Barbon, Francesco and Linz, Sarah and Oesterle, Florian and Weigel, Robert},
    publisher = {IEEE},
    booktitle = {European Microwave Conference (EuMC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1059999},
    year = {2013},
    month = {10},
    day = {06},
    eventdate = {2013-10-06/2013-10-10},
    faupublication = {yes},
    pages = {1587--1590},
    peerreviewed = {Yes},
    title = {Six-Port Technology for Precise Geometrical Measurement Applications - an Overview},
    url = {http://ieeexplore.ieee.org/document/6686975/},
    venue = {Nürnberg},
    }
  • A. Koelpin, S. Lindner, S. Mann, F. Barbon, A. Talai, and R. Weigel, "The Six-Port Structure as a Precise Measurement Tool - A New Rise of an Old Concept" in Kleinheubacher Tagung, Miltenberg, 2013. [Bibtex]
    @inproceedings{koelpin2013c,
    abstract = {Six-Port Technique has been known in RF and microwave metrology since the early 1970s for vector network analysis and precise power measurements. Two decades later, the system has been proposed as a receiver for complex valued data reception. However, six-port technique has always been niche architecture, since the tremendous evolution in integrated circuit technology got more and more impact on high-end circuitry and measurement systems. But there are some special applications that can be very efficiently addressed by the six-port principle. In general, all scenarios where the interesting information is coded in signal power or can be translated in relative phase shifts are suitable for six-port systems, as this architecture offers superior phase resolution combined with low cost implementation. Furthermore, this principle can be used up to millimeter-wave frequencies and even higher. The reason is that the core functionality is realized only by passive transmission lines or waveguide structures featuring the interferometric part, and only diodes have to be used as monolithic components for the RF front-end. The information reconstruction is conducted in baseband by algorithms with very low complexity that can be run on a low power microcontroller and show only low latency of a few controller clock cycles. In this talk the newest results for applications addressed by six-port architecture for metrology will be presented. Besides very precise distance and angle measurements or vibration analysis, like heartbeat and breath rate detection, also new fields will be presented. One very promising approach is using the six-port technique for frequency analysis of a pulse-like microwave signal. Furthermore, the very first results in temperature measurements of a water basin by a six-port reflectometer will be shown.},
    author = {Koelpin, Alexander and Lindner, Stefan and Mann, Sebastian and Barbon, Francesco and Talai, Armin and Weigel, Robert},
    booktitle = {Kleinheubacher Tagung},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060000},
    year = {2013},
    month = {10},
    day = {23},
    eventdate = {2013-09-23/2013-09-25},
    faupublication = {yes},
    keywords = {Six-Port; Interferometer},
    peerreviewed = {Yes},
    title = {The Six-Port Structure as a Precise Measurement Tool - A New Rise of an Old Concept},
    type = {Abstract zum Vortrag},
    venue = {Miltenberg},
    }
  • [DOI] S. Lindner, G. Vinci, F. Barbon, S. Linz, S. Mann, R. Weigel, and A. Koelpin, "Instantaneous frequency measurement based on low-cost Six-Port technology" in European Microwave Conference, Nürnberg, 2013, pp. 460-463. [Bibtex]
    @inproceedings{lindner2013a,
    abstract = {This paper describes a new approach for absolute, high accuracy and fast responding millimeter wave frequency measurement. The shown system is based on the reduction of the frequency detection to a phase measurement with a delay line and a subsequent determination of the phase. By using a Six-Port structure, this phase can be evaluated very precisely, leading to a accurate frequency detection. Another remarkable point is the fast system response, because there is neither time consuming transformation to frequency domain nor long integration time required.},
    author = {Lindner, Stefan and Vinci, Gabor and Barbon, Francesco and Linz, Sarah and Mann, Sebastian and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {European Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/1059961},
    year = {2013},
    month = {10},
    day = {06},
    doi = {10.23919/EUMC.2013.6686691},
    eventdate = {2013-10-06/2013-10-10},
    faupublication = {yes},
    keywords = {delay lines; frequency measurement; Detectors; millimeter wave measurement; phase measurement},
    pages = {460--463},
    peerreviewed = {Yes},
    title = {Instantaneous frequency measurement based on low-cost Six-Port technology},
    venue = {Nürnberg},
    }
  • S. Mann, G. Vinci, S. Lindner, F. Barbon, S. Linz, R. Weigel, and A. Koelpin, "Improved Dual Six-Port Receiver Structure for Two-Dimensional Direction of Arrival Detection Using pHEMT Power Detectors" in IEEE European Radar Conference (EuRAD), Nürnberg, 2013. [Bibtex]
    @inproceedings{mann2013,
    abstract = {Abstract—Two-dimensional Direction Of Arrival detection (DOA) of an arbitrary electromagnetic wave is a challenging task, especially if high accuracy has to be performed. The proposed DOA receiver is based on a phase detector using the interferometric Six-Port principle. For the proposed system an improved power detector concept using a High Electron Mobility Transistor has been developed featuring strictly square law behaviour to at least -15 dBm. Thus, the system offers a high dynamic range of more than 40 dB. The hereby presented system concept additionally has a switched delay line phase shifter for frequency estimation of the incoming electromagnetic wave. Moreover, the most important system components have been validated by measurements.},
    author = {Mann, Sebastian and Vinci, Gabor and Lindner, Stefan and Barbon, Francesco and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE European Radar Conference (EuRAD)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1059980},
    year = {2013},
    month = {10},
    day = {06},
    eventdate = {2013-10-06/2013-10-10},
    faupublication = {yes},
    keywords = {Six-Port; Direction-Of-Arrival; Phase measurement; Power Detector; pHEMT},
    peerreviewed = {Yes},
    title = {Improved Dual Six-Port Receiver Structure for Two-Dimensional Direction of Arrival Detection Using pHEMT Power Detectors},
    venue = {Nürnberg},
    }
  • G. Vinci, S. Lindner, S. Mann, F. Barbon, S. Linz, R. Weigel, and A. Koelpin, "Six-Port Microwave Interferometer Radar for Mechanical Vibration Analysis" in European Radar Conference (EuRAD), Nürnberg, 2013, pp. 1599-1602. [Bibtex]
    @inproceedings{vinci2013a,
    author = {Vinci, Gabor and Lindner, Stefan and Mann, Sebastian and Barbon, Francesco and Linz, Sarah and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {European Radar Conference (EuRAD)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060031},
    year = {2013},
    month = {10},
    day = {09},
    eventdate = {2013-10-09/2013-10-11},
    faupublication = {yes},
    pages = {1599--1602},
    peerreviewed = {Yes},
    title = {Six-Port Microwave Interferometer Radar for Mechanical Vibration Analysis},
    url = {http://ieeexplore.ieee.org/document/6689170},
    venue = {Nürnberg},
    }
  • A. Koelpin, S. Lindner, S. Mann, F. Barbon, S. Linz, and R. Weigel, "Two-dimensional Angle-of-arrival Analysis by One Enhanced Six-port Structure" in Progress In Electromagnetics Research Symposium (PIERS), Stockholm, Sweden, 2013, p. 1403. [Bibtex]
    @inproceedings{koelpin2013a,
    author = {Koelpin, Alexander and Lindner, Stefan and Mann, Sebastian and Barbon, Francesco and Linz, Sarah and Weigel, Robert},
    booktitle = {Progress In Electromagnetics Research Symposium (PIERS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060001},
    year = {2013},
    month = {08},
    day = {12},
    eventdate = {2013-08-12/2013-08-15},
    faupublication = {yes},
    pages = {1403},
    peerreviewed = {unknown},
    title = {Two-dimensional Angle-of-arrival Analysis by One Enhanced Six-port Structure},
    type = {Abstract zum Vortrag},
    venue = {Stockholm, Sweden},
    }
  • [DOI] S. Lindner, F. Barbon, S. Mann, G. Vinci, R. Weigel, and A. Koelpin, "Dual Tone Approach for Unambiguous Six-Port Based Interferometric Distance Measurements" in IEEE International Microwave Symposium, Seattle, WA, USA, 2013, pp. 1-4. [Bibtex]
    @inproceedings{lindner2013,
    abstract = {This publication shows an approach for absolute, unambiguous distance measurements with a Six-Port radar at 24 GHz. Such an interferometric radar has the drawback of ambiguity problem concerning phase, limiting the measuring distance to half of the used wavelength. This can be solved with the presented dual tone system using the resulting beat frequency between two tones to determine an absolute position within even several wavelengths. In the following, this system will be presented along with simulations and measurements proving the concept.},
    author = {Lindner, Stefan and Barbon, Francesco and Mann, Sebastian and Vinci, Gabor and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    booktitle = {IEEE International Microwave Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060041},
    year = {2013},
    month = {06},
    day = {02},
    doi = {10.1109/MWSYM.2013.6697581},
    eventdate = {2013-06-02/2013-06-07},
    faupublication = {yes},
    keywords = {distance measurement; radar interferometry; ;absolute position determination},
    pages = {1--4},
    peerreviewed = {Yes},
    title = {Dual Tone Approach for Unambiguous Six-Port Based Interferometric Distance Measurements},
    venue = {Seattle, WA, USA},
    }
  • [DOI] G. Vinci, S. Lindner, F. Barbon, S. Mann, M. Hofmann, A. Duda, R. Weigel, and A. Koelpin, "Six-Port Radar Sensor for Remote Respiration Rate and Heartbeat Vital-Sign Monitoring", IEEE Transactions on Microwave Theory and Techniques, vol. 61, iss. 5, pp. 2093-2100, 2013. [Bibtex]
    @article{vinci2013,
    abstract = {A novel remote respiration and heartbeat monitoring sensor is presented. The device is a monostatic radar based on a six-port interferometer operating a continuous-wave signal at 24 GHz and a radiated power of less than 3 µW . Minor mechanical movements of the patient's body caused by the respiration as well as heartbeat can be tracked by analyzing the phase modulation of the backscattered signal by means of microwave interferometry with the six-port network. High-distance measurement accuracy in the micrometer scale as well as low system complexity are the benefits of the six-port receiver. To verify the performance of the system, different body areas have been observed by the six-port radar. The proposed system has been tested and validated by measurement results.},
    author = {Vinci, Gabor and Lindner, Stefan and Barbon, Francesco and Mann, Sebastian and Hofmann, Maximilian and Duda, Alexander and Weigel, Robert and Koelpin, Alexander},
    publisher = {IEEE},
    cris = {https://cris.fau.de/converis/publicweb/publication/1060025},
    year = {2013},
    month = {03},
    doi = {10.1109/TMTT.2013.2247055},
    faupublication = {yes},
    issn = {0018-9480},
    journaltitle = {IEEE Transactions on Microwave Theory and Techniques},
    keywords = {radars; radar systems; bio effects and med. appl. of RF/Microwave; biomedical applications; biomedical sensors},
    number = {5},
    pages = {2093--2100},
    peerreviewed = {Yes},
    shortjournal = {IEEE T MICROW THEORY},
    title = {Six-Port Radar Sensor for Remote Respiration Rate and Heartbeat Vital-Sign Monitoring},
    volume = {61},
    }
  • [DOI] S. Mann, G. Vinci, S. Lindner, S. Linz, F. Barbon, R. Weigel, and A. Koelpin, "61 GHz Six-Port Radar Frontend for High Accuracy Range Detection Applications" in IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, Torino, Italy, 2013, pp. 818-821. [Bibtex]
    @inproceedings{mann2013a,
    abstract = {Abstract — Range detection is an challenging task, especially if high accuracy has to be reached. The hereby proposed 61GHz continuous wave radar system is based on a phase detector using Six-Port technique. For accuracy enhancement an improved isolation radar coupler has been introduced for broadband frequency modulated continuous wave radar as well as narrow band radar techniques. Furthermore, a Six-Port network based on four hybrid couplers is presented. Finally, the most important system subcomponents have been validated by measurements.},
    author = {Mann, Sebastian and Vinci, Gabor and Lindner, Stefan and Linz, Sarah and Barbon, Francesco and Weigel, Robert and Koelpin, Alexander},
    booktitle = {IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications},
    cris = {https://cris.fau.de/converis/publicweb/publication/1059986},
    year = {2013},
    doi = {10.1109/APWC.2013.6624910},
    faupublication = {yes},
    keywords = {Six-Port; Radar Coupler},
    pages = {818--821},
    peerreviewed = {Yes},
    title = {61 GHz Six-Port Radar Frontend for High Accuracy Range Detection Applications},
    venue = {Torino, Italy},
    }

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