Research

Most recent projetcs

All Projects…

Most recent awards

  • B. Scheiner, Förderung einer Kongressreise (RWS2019), Deutscher Akademischer Austauschdienst, 2019. [Bibtex]
    @prize{scheiner_prize_2019,
    author = {Scheiner, Benedict},
    booktitle = {Deutscher Akademischer Austauschdienst},
    cris = {scheiner_prize_2019},
    year = {2019},
    title = {Förderung einer Kongressreise (RWS2019)},
    type = {20773-Kleiner Preis},
    }
  • M. Frank, Förderung einer Kongressreise (RWS2019), Deutscher Akademischer Austauschdienst, 2019. [Bibtex]
    @prize{frank_prize_2019,
    author = {Frank, Martin},
    booktitle = {Deutscher Akademischer Austauschdienst},
    cris = {frank_prize_2019},
    year = {2019},
    title = {Förderung einer Kongressreise (RWS2019)},
    type = {20773-Kleiner Preis},
    }
  • F. Michler, APMC 2018 Student Travel Grant, Asia-Pacific Microwave Conference, 2018. [Bibtex]
    @prize{michler_prize_2018b,
    author = {Michler, Fabian},
    booktitle = {Asia-Pacific Microwave Conference},
    cris = {michler_prize_2018b},
    year = {2018},
    month = {11},
    day = {06},
    title = {APMC 2018 Student Travel Grant},
    type = {20773-Kleiner Preis},
    }
  • R. Weigel, ITG-Fellow, Informationstechnischen Gesellschaft (ITG) im VDE, 2018. [Bibtex]
    @prize{weigel_prize_2018b,
    abstract = {Die ITG verleiht den ITG-Fellow für hervorragende wissenschaftliche oder technische Leistungen auf dem Gebiet der Informationstechnik.},
    author = {Weigel, Robert},
    booktitle = {Informationstechnischen Gesellschaft (ITG) im VDE},
    cris = {weigel_prize_2018b},
    year = {2018},
    month = {11},
    day = {05},
    title = {ITG-Fellow},
    type = {20773-Kleiner Preis},
    }
  • F. Lurz, Best Oral Talk Prize, Surface Acoustic Wave Sensor & Actuator Symposium (SAW Symposium 2018), 2018. [Bibtex]
    @prize{lurz_prize_2018,
    abstract = {Best Oral Talk Prize for the talk: "Reader Concept for Wireless Resonant Surface Acoustic Wave Instrumentation based on Instantaneous Frequency Measurement"},
    author = {Lurz, Fabian},
    booktitle = {Surface Acoustic Wave Sensor & Actuator Symposium (SAW Symposium 2018)},
    cris = {lurz_prize_2018},
    year = {2018},
    month = {10},
    day = {02},
    title = {Best Oral Talk Prize},
    type = {20773-Kleiner Preis},
    }

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All Awards...

Most recent publications

  • K. Shi, S. Schellenberger, T. Steigleder, F. Michler, F. Lurz, R. Weigel, and A. Koelpin, "Contactless Carotid Pulse Measurement Using Continuous Wave Radar" in 2018 Asia-Pacific Microwave Conference, Kyoto, Japan, 2019. [Bibtex]
    @inproceedings{shi2018b,
    abstract = {Cardiovascular diseases are one of the major causes of death. Regular checkups and preventive actions can drastically help reducing fatal incidences. This can be achieved by monitoring the carotid artery or rather the carotid pulse signal. Commonly, ultrasound devices are used for that purpose. However, these devices are costly, mostly stationary and their usage requires training and experience. This paper investigates the possible usage of radar systems as a contactless and low-cost alternative for carotid pulse measurements. Theoretical investigations reveal a linear relationship between the measurands of both devices and synchronous recordings from three test persons further confirm the feasibility of using radar systems as a potential device for monitoring cardiovascular diseases.},
    author = {Shi, Kilin and Schellenberger, Sven and Steigleder, Tobias and Michler, Fabian and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {2018 Asia-Pacific Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/202749417},
    year = {2019},
    month = {11},
    day = {06},
    eventdate = {2018-11-06/2018-08-09},
    faupublication = {yes},
    peerreviewed = {unknown},
    title = {Contactless Carotid Pulse Measurement Using Continuous Wave Radar},
    type = {Konferenzschrift},
    venue = {Kyoto, Japan},
    }
  • T. Reißland, B. Lenhart, J. Lichtblau, M. Sporer, A. Koelpin, and R. Weigel, "Evaluation of ISAR-based autofocus methods for estimation of true-speed-over-ground using a 24 GHz FMCW-Radar" in Asia-Pacific Microwave Conference, Kyoto, Japan, 2019 (to be published). [Bibtex]
    @inproceedings{reissland2018a,
    abstract = {This paper presents a novel approach for the determination of True-Speed-Over-Ground for trains. The approach utilizes the inverse synthetic aperture radar (ISAR) technique. Several focus metrics are evaluated and tested. The tests were carried out in an laboratory environment. The results are compared to an alternative correlation-based approach.},
    author = {Reißland, Torsten and Lenhart, Björn and Lichtblau, Johann and Sporer, Michael and Koelpin, Alexander and Weigel, Robert},
    language = {English},
    booktitle = {Asia-Pacific Microwave Conference},
    cris = {https://cris.fau.de/converis/publicweb/publication/203791311},
    year = {2019},
    month = {11},
    day = {06},
    eventdate = {2018-11-06/2018-11-09},
    faupublication = {yes},
    keywords = {focusing; measurement systems; synthetic aperture radar; velocity measurement},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {Evaluation of ISAR-based autofocus methods for estimation of true-speed-over-ground using a 24 GHz FMCW-Radar},
    type = {Konferenzschrift},
    venue = {Kyoto, Japan},
    }
  • S. Schellenberger, K. Shi, M. Mai, J. P. Wiedemann, T. Steigleder, B. Eskofier, R. Weigel, and A. Koelpin, "Detecting Respiratory Effort-Related Arousals in Polysomnographic Data Using LSTM Networks" in Computing in Cardiology, MECC Maastricht, Netherlands, 2019 (to be published). [Bibtex]
    @inproceedings{schellenberger2018,
    author = {Schellenberger, Sven and Shi, Kilin and Mai, Melanie and Wiedemann, Jan Philipp and Steigleder, Tobias and Eskofier, Björn and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {Computing in Cardiology},
    cris = {https://cris.fau.de/converis/publicweb/publication/202377694},
    year = {2019},
    month = {11},
    day = {23},
    eventdate = {2018-09-23/2018-09-26},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {Detecting Respiratory Effort-Related Arousals in Polysomnographic Data Using LSTM Networks},
    type = {Konferenzschrift},
    venue = {MECC Maastricht, Netherlands},
    }
  • L. Grebenstein, J. Kirchner, R. Stavracakis Peixoto, W. Zimmermann, W. Wicke, A. Ahmadzadeh, V. Jamali Kooshkghazi, G. Fischer, R. Weigel, A. Burkovski, and R. Schober, "Biological Optical-to-Chemical Signal Conversion Interface: A Small-scale Modulator for Molecular Communications" in 5th ACM International Conference on Nanoscale Computing and Communication 2018, Reykjavik, Iceland, 2019 (to be published). [DOI] [Bibtex]
    @inproceedings{grebenstein2018,
    abstract = {Although many exciting applications of molecular communication (MC) systems are envisioned to be at microscale, the available MC testbeds reported in the literature so far are mostly at macroscale. This may partially be due to the fact that controlling an MC system at microscale is quite challenging. To link the macroworld to the microworld, we propose a biological signal conversion interface that can also be seen as a microscale modulator. This interface translates an optical signal, which can be easily controlled using a light-emitting diode (LED), into a chemical signal by changing the pH of the environment. The modulator is realized using Escherichia coli bacteria that express the light-driven proton pump gloeorhodopsin from Gloeobacter violaceus and, upon inducing external light stimuli, can locally change their surrounding pH level by exporting protons into the environment. Based on measurement data from a testbed, we develop an analytical model for the induced chemical signal as a function of the applied optical signal. Finally, using a pH sensor as detector, we show for an example scenario that the proposed setup is able to successfully convert an optical signal representing a sequence of binary symbols into a chemical signal with a bit rate of 1 bit/min.},
    author = {Grebenstein, Laura and Kirchner, Jens and Stavracakis Peixoto, Renata and Zimmermann, Wiebke and Wicke, Wayan and Ahmadzadeh, Arman and Jamali Kooshkghazi, Vahid and Fischer, Georg and Weigel, Robert and Burkovski, Andreas and Schober, Robert},
    language = {English},
    booktitle = {5th ACM International Conference on Nanoscale Computing and Communication 2018},
    cris = {https://cris.fau.de/converis/publicweb/publication/203247813},
    year = {2019},
    month = {09},
    day = {05},
    doi = {10.1145/3233188.3233203},
    eventdate = {2018-09-05/2018-09-07},
    faupublication = {yes},
    keywords = {Molecular communication; bacteriorhodopsi},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {Biological Optical-to-Chemical Signal Conversion Interface: A Small-scale Modulator for Molecular Communications},
    type = {Konferenzschrift},
    venue = {Reykjavik, Iceland},
    }
  • H. Unterweger, J. Kirchner, W. Wicke, A. Ahmadzadeh, D. M. A. Ahmed, V. Jamali Kooshkghazi, C. Alexiou, G. Fischer, R. Weigel, and R. Schober, "Experimental Molecular Communication Testbed Based on Magnetic Nanoparticles in Duct Flow" in 19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, Kalamata, Greece, 2019 (to be published). [Bibtex]
    @inproceedings{unterweger2018,
    abstract = {Simple and easy to implement testbeds are needed to further advance molecular communication research. To this end, this paper presents an in-vessel molecular communication testbed using magnetic nanoparticles dispersed in an aqueous suspension as they are also used for drug targeting in biotechnology. The transmitter is realized by an electronic pump for injection via a Yconnector. A second pump provides a background flow for signal propagation. For signal reception, we employ a susceptometer, an electronic device including a coil, where the magnetic particles move through and generate an electrical signal. We present experimental results for the transmission of a binary sequence and the system response following a single injection. For this flowdriven particle transport, we propose a simple parameterized mathematical model for evaluating the system response. 
    }, author = {Unterweger, Harald and Kirchner, Jens and Wicke, Wayan and Ahmadzadeh, Arman and Ahmed, Doaa Mahmoud Ahmed and Jamali Kooshkghazi, Vahid and Alexiou, Christoph and Fischer, Georg and Weigel, Robert and Schober, Robert}, language = {English}, booktitle = {19th IEEE International Workshop on Signal Processing Advances in Wireless Communications}, cris = {https://cris.fau.de/converis/publicweb/publication/203248614}, year = {2019}, month = {06}, day = {25}, eventdate = {2018-06-25/2018-06-28}, faupublication = {yes}, keywords = {Molecular communication; magnetic nanoparticles}, note = {unpublished}, peerreviewed = {Yes}, title = {Experimental Molecular Communication Testbed Based on Magnetic Nanoparticles in Duct Flow}, type = {Konferenzschrift}, venue = {Kalamata, Greece}, }
  • H. Shinoda, D. Anzai, J. Kirchner, G. Fischer, and J. Wang, "A Study on Nonlinear Effect of Low-Frequency Modulated Radio Signals on Stimulus Response", IEICE Transactions on Communications, 2019. [Bibtex]
    @article{shinoda2019,
    abstract = {Stimulus response caused by low-frequency electromagnetic exposure can be used to realize effective medical treatments. However, it is well known that the membrane potential of nerve cells exhibits nonlinearity, particularly in the case of modulated signals, it is important to analyze the nonlinear stimulation effect based on a nerve cell model. This paper adopts the Frankenhaeuser–Huxley (FH) model as the nerve cell model, and evaluates the stimulus response based on the FH model when nerve cells are exposed to low-frequency modulated radio signals such as On-Off Keying (OOK) modulation. This paper investigated the nonlinear effect of the stimulus intensity from the viewpoint of the spike frequency with different modulation parameter values including the induced amplitude and duty cycle. It was confirmed that action potential (AP) rate was higher with OOK-type radio signals than with unmodulated signals. 
    }, author = {Shinoda, Hiroki and Anzai, Daisuke and Kirchner, Jens and Fischer, Georg and Wang, Jianqing}, cris = {https://cris.fau.de/converis/publicweb/publication/208638084}, year = {2019}, month = {06}, day = {30}, faupublication = {yes}, issn = {0916-8516}, journaltitle = {IEICE Transactions on Communications}, keywords = {Low-frequency stimulation; Frankenhaeuser-Huxley model; Nonlinear Response; On-Off keying modulation}, peerreviewed = {Yes}, shortjournal = {IEICE T COMMUN}, title = {A Study on Nonlinear Effect of Low-Frequency Modulated Radio Signals on Stimulus Response}, type = {Article in Journal}, }
  • J. Rimmelspacher, R. Weigel, A. Hagelauer, and V. Issakov, "LC Tank Differential Inductor-Coupled Dual-Core 60 GHz Push-Push VCO in 45 nm RF-SOI CMOS Technology" in Radio & Wireless Week (RWW): Silicon Monolithic Inegrated Circuits in RF Systems (SiRF), Orlando, FL, USA, 2019 (to be published). [Bibtex]
    @inproceedings{rimmelspacher2019,
    abstract = {This paper presents a 60 GHz dual-core push-push VCO in a 45 nm partially depleted (PD) RF Silicon-on-Insulator (SOI) CMOS technology. The cores are coupled inductively via differential inductors. The best measured phase noise at 1 MHz offset from a 63 GHz carrier is −94.4 dBc/Hz. The wideband continuous frequency-tuning-range (FTR) is 16 %. The DC power dissipation is 76 mW including fundamental 30 GHz and second harmonic (H2) 60 GHz output buffers at 1 V power supply voltage. The measurement results of a reference single-core VCO design proves the relative phase noise improvement of the implemented core-coupling technique. The chip area excluding pads is 0.09 mm2.
    }, author = {Rimmelspacher, Johannes and Weigel, Robert and Hagelauer, Amelie and Issakov, Vadim}, language = {English}, booktitle = {Radio & Wireless Week (RWW): Silicon Monolithic Inegrated Circuits in RF Systems (SiRF)}, cris = {https://cris.fau.de/converis/publicweb/publication/203768203}, year = {2019}, month = {04}, day = {20}, eventdate = {2019-01-20/2019-01-23}, faupublication = {yes}, keywords = {millimeter-wave VCO,wideband,silicon-on-insulator,CMOS technology,System-on-Chip}, note = {unpublished}, peerreviewed = {unknown}, title = {LC Tank Differential Inductor-Coupled Dual-Core 60 GHz Push-Push VCO in 45 nm RF-SOI CMOS Technology}, type = {Konferenzschrift}, venue = {Orlando, FL, USA}, }
  • L. Grebenstein, J. Kirchner, R. Stavracakis Peixoto, W. Zimmermann, F. Irnstorfer, W. Wicke, A. Ahmadzadeh, V. Jamali Kooshkghazi, G. Fischer, R. Weigel, A. Burkovski, and R. Schober, "Biological Optical-to-Chemical Signal Conversion Interface: A Small-scale Modulator for Molecular Communications", IEEE Transactions on Nanobioscience, 2019. [DOI] [Bibtex]
    @article{grebenstein2019,
    abstract = {Although many exciting applications of molecular communication (MC) systems are envisioned to be at microscale, the MC testbeds reported in the literature so far are mostly at macroscale. This may partially be due to the fact that controlling an MC system at microscale is challenging. To link the macroworld to the microworld, we propose and demonstrate a biological signal conversion interface that can also be seen
    as a microscale modulator. In particular, the proposed interface transduces an optical signal, which is controlled using a lightemitting diode (LED), into a chemical signal by changing the pH of the environment. The modulator is realized using Escherichia coli bacteria as microscale entity expressing the light-driven
    proton pump gloeorhodopsin from Gloeobacter violaceus. Upon inducing external light stimuli, these bacteria locally change their surrounding pH level by exporting protons into the environment. To verify the effectiveness of the proposed optical-to-chemical signal converter, we analyze the pH signal measured by a
    pH sensor, which serves as receiver. We develop an analytical parametric model for the induced chemical signal as a function of the applied optical signal. Using this model, we derive a trainingbased channel estimator which estimates the parameters of the proposed model to fit the measurement data based on a least square error approach. We further derive the optimal maximum likelihood detector and a suboptimal low-complexity detector to recover the transmitted data from the measured received signal. It is shown that the proposed parametric model is in good agreement with the measurement data. Moreover, for an example scenario, we show that the proposed setup is able to successfully convert an optical signal representing a sequence of binary symbols into a chemical signal with a bit rate of 1 bit/min and recover the transmitted data from the chemical signal using the proposed estimation and detection schemes. The proposed modulator may form the basis for future MC testbeds and applications at microscale.
    }, author = {Grebenstein, Laura and Kirchner, Jens and Stavracakis Peixoto, Renata and Zimmermann, Wiebke and Irnstorfer, Florian and Wicke, Wayan and Ahmadzadeh, Arman and Jamali Kooshkghazi, Vahid and Fischer, Georg and Weigel, Robert and Burkovski, Andreas and Schober, Robert}, cris = {https://cris.fau.de/converis/publicweb/publication/205157325}, year = {2019}, month = {04}, day = {15}, doi = {10.1109/TNB.2018.2870910}, faupublication = {yes}, issn = {1536-1241}, journaltitle = {IEEE Transactions on Nanobioscience}, keywords = {Diffusive molecular communications; experimental testbed; statistical modeling; E. coli bacteria; light-driven proton pump}, peerreviewed = {Yes}, shortjournal = {IEEE T NANOBIOSCI}, title = {Biological Optical-to-Chemical Signal Conversion Interface: A Small-scale Modulator for Molecular Communications}, type = {Article in Journal}, }
  • M. Völkel, S. Mann, M. Frank, R. Weigel, and A. Hagelauer, "A High Precision Reconfigureable Bistatic Interferometric Radar with Integrated Six-port Receiver at 60 GHz" in GeMiC, Stuttgart, 2019 (to be published). [Bibtex]
    @inproceedings{voelkel2019b,
    abstract = {In this paper a 60GHz bistatic reconfigureable sixport radar for high precision measuring is presented. The frontend is designed in a substrate-integrated waveguide technology including coupler, attenuator and transmission lines. The core of the front-end is a integrated six-port receiver MMIC including the passive six-port structure, a LNA and four detectors. It has been designed using a 0.13µm SiGe BiCMOS process. A BGT60, stabilized by a PLL-circuit, generates the transmit signal for vivaldi antennas. The system includes also a baseband circuit with adjustable differential amplifier, 24bit@52kSa/s ADC converter for signal sampling and DAC converter for gain and attenuation tuning. Furthermore, the stacked system is directly connected to a FPGA board. A full NIOS2 system is set up to control the radar and send the collected data via ethernet to the PC. C++ software is written to configure the system in an easy comfortable way and to visualize the measured data. Measurements show, that the radar works in a range up to five meter. The maximum distance deviation at 1m is 30µm and the standard deviation is 12.6µm.
    }, author = {Völkel, Matthias and Mann, Sebastian and Frank, Martin and Weigel, Robert and Hagelauer, Amelie}, language = {English}, booktitle = {GeMiC}, cris = {https://cris.fau.de/converis/publicweb/publication/208938538}, year = {2019}, month = {03}, day = {25}, eventdate = {2019-03-25/2019-03-27}, faupublication = {yes}, keywords = {bistatic; FPGA; integrated receiver; interferometry; millimeter wave circuits; radar systems; six-port; substrateintegrated waveguide (SIW)}, note = {unpublished}, peerreviewed = {automatic}, title = {A High Precision Reconfigureable Bistatic Interferometric Radar with Integrated Six-port Receiver at 60 GHz}, venue = {Stuttgart}, }
  • J. Rimmelspacher, A. Werthof, R. Weigel, A. Geiselbrechtinger, and V. Issakov, "Experimental Considerations on Accurate fT and fmax Extraction for MOS Transistors Measured up to 110 GHz" in Automated RF Techniques Group (ARFTG) Microwave Measurement Symposium, Orlando, FL, USA, 2019. [Bibtex]
    @inproceedings{rimmelspacher2019a,
    author = {Rimmelspacher, Johannes and Werthof, Andreas and Weigel, Robert and Geiselbrechtinger, Angelika and Issakov, Vadim},
    booktitle = {Automated RF Techniques Group (ARFTG) Microwave Measurement Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/209910998},
    year = {2019},
    month = {03},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    peerreviewed = {unknown},
    title = {Experimental Considerations on Accurate fT and fmax Extraction for MOS Transistors Measured up to 110 GHz},
    type = {Konferenzschrift},
    venue = {Orlando, FL, USA},
    }
  • M. Frank, F. Lurz, R. Weigel, and A. Koelpin, "Low-cost Transmitarray Antenna Designs with +/-70° Beam Steering Range in V-Band" in German Microwave Conference (GeMiC) 2019, Stuttgart, 2019 (to be published). [Bibtex]
    @inproceedings{frank2019a,
    author = {Frank, Martin and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {German Microwave Conference (GeMiC) 2019},
    cris = {https://cris.fau.de/converis/publicweb/publication/208937734},
    year = {2019},
    month = {03},
    day = {25},
    eventdate = {2019-03-25/2019-03-27},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {Low-cost Transmitarray Antenna Designs with +/-70° Beam Steering Range in V-Band},
    type = {Konferenzschrift},
    venue = {Stuttgart},
    }
  • B. Cassens, M. Hartmann, T. Nowak, N. Duda, J. Thielecke, A. Koelpin, and R. Kapitza, "Bursting: Increasing Energy Efficiency of Erasure-Coded Data in Animal-Borne Sensor Networks" in ESWN 2019, Beijing, China, 2019 (to be published). [Bibtex]
    @inproceedings{cassens2019,
    author = {Cassens, Björn and Hartmann, Markus and Nowak, Thorsten and Duda, Niklas and Thielecke, Jörn and Koelpin, Alexander and Kapitza, Ruediger},
    language = {English},
    booktitle = {ESWN 2019},
    cris = {https://cris.fau.de/converis/publicweb/publication/208990776},
    year = {2019},
    month = {02},
    day = {27},
    eventdate = {2019-02-25/2019-02-27},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {Bursting: Increasing Energy Efficiency of Erasure-Coded Data in Animal-Borne Sensor Networks},
    type = {Konferenzschrift},
    venue = {Beijing, China},
    }
  • D. Schuklin, J. Röber, M. Stadelmayer, T. Mai, R. Weigel, and A. Hagelauer, "Highly Integrated Low Power Photomultiplier Readout ASIC Comprising Fast ADC to Be Used in the Antarctic Ice" in 2019 IEEE 19th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), Orlando, Florida, USA, 2019. [Bibtex]
    @inproceedings{schuklin2019,
    abstract = {After the successful launch of IceCube, the work is currently concentrated the next generation neutrino observatory at South Pole, IceCube Gen2. The neutrino detection and post processing accuracy mostly relies on used electronic hardware. The proposed highly integrated, low power photomultiplier readout ASIC is designed for function in low temperatures of Antarctic. The microchip comprises an input pre-amplifier, a clock generator and an ADC with encoder logic featuring sampling rate of 500MHz, 6bit output accuracy with a smart extension of input related resolution up to 8bit in the area of interest. It achieves the same accuracy like a standard 8bit ADC architecture but with significantly less hardware overhead and power dissipation.
    }, author = {Schuklin, Dennis and Röber, Jürgen and Stadelmayer, Markus and Mai, Timo and Weigel, Robert and Hagelauer, Amelie}, language = {English}, booktitle = {2019 IEEE 19th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF)}, cris = {https://cris.fau.de/converis/publicweb/publication/208580332}, year = {2019}, month = {02}, day = {20}, eventdate = {2019-01-20/2019-01-23}, faupublication = {yes}, peerreviewed = {unknown}, title = {Highly Integrated Low Power Photomultiplier Readout ASIC Comprising Fast ADC to Be Used in the Antarctic Ice}, type = {Konferenzschrift}, venue = {Orlando, Florida, USA}, }
  • T. Reißland, F. Lurz, R. Weigel, and A. Koelpin, "Compressed sensing based near-field radar target imaging and localization employing normalized iterative hard thresholding" in IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Orlando, FL, 2019 (to be published). [Bibtex]
    @inproceedings{reissland2019,
    abstract = {
    The paper presents an approach for target position recovery from frequency modulated continuous wave (FMCW) radar data. The presented algorithm is, in contrast to many established techniques, able to use snapshots taken from arbitrary positions. The presented technique can be applied to imaging as well as localization applications. The basis of the approach is a compressed sensing based algorithm called normalized iterative hard thresholding (NIHT). To prove its capabilities it is evaluated by simulation over a wide range of signal bandwidths and base frequencies.
    }, author = {Reißland, Torsten and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander}, language = {English}, booktitle = {IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)}, cris = {https://cris.fau.de/converis/publicweb/publication/204083974}, year = {2019}, month = {01}, day = {20}, eventdate = {2019-01-20/2019-01-23}, faupublication = {yes}, note = {unpublished}, peerreviewed = {automatic}, title = {Compressed sensing based near-field radar target imaging and localization employing normalized iterative hard thresholding}, type = {undefined}, venue = {Orlando, FL}, }
  • E. Hassan, M. Berggren, B. Scheiner, F. Michler, R. Weigel, and F. Lurz, "Design of Planar Microstrip-to-Waveguide Transitions using Topology Optimization" in IEEE Radio and Wireless Symposium (RWS), Orlando, FL, 2019 (to be published). [Bibtex]
    @inproceedings{hassan2019,
    abstract = {This paper presents a topology optimization approach to design planar transitions between a microstrip line (MSL) and a rectangular waveguide (RWG) in the K-band. The transition comprises two sub-transitions: one from the MSL to a substrate integrated waveguide (SIW) and the second from the SIW to the RWG. Both are on the same substrate and can be manufactured with a standard printed circuit board process. This leads to a very cost-effective solution compared with other approaches. A WR-42 waveguide can easily be surface mounted to the transitions using a standard flange. The transitions have been fabricated, and their measured performance shows good agreement with the simulations. The MSL-SIW transition has a broadband behavior and the SIW-RWG transition still reaches a relative bandwidth of 10%.},
    author = {Hassan, Emadeldeen and Berggren, Martin and Scheiner, Benedict and Michler, Fabian and Weigel, Robert and Lurz, Fabian},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/202229996},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {automatic},
    title = {Design of Planar Microstrip-to-Waveguide Transitions using Topology Optimization},
    venue = {Orlando, FL},
    }
  • J. Lichtblau, F. Michler, B. Scheiner, F. Lurz, M. Gräbner, M. Hundhausen, R. Weigel, and A. Koelpin, "Phased Array Approach for Vehicle-to-Infrastructure Communication in Train Stations" in IEEE Radio and Wireless Symposium (RWS), Orlando, FL, 2019 (to be published). [Bibtex]
    @inproceedings{lichtblau2019a,
    author = {Lichtblau, Johann and Michler, Fabian and Scheiner, Benedict and Lurz, Fabian and Gräbner, Martin and Hundhausen, Mira and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/208515022},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {automatic},
    title = {Phased Array Approach for Vehicle-to-Infrastructure Communication in Train Stations},
    type = {Konferenzschrift},
    venue = {Orlando, FL},
    }
  • S. Erhardt, R. Weigel, and A. Koelpin, "A Small and Lightweight Ultra-Low Power GSM Cell Tracker" in Radio & Wireless Week, Orlando, Florida, 2019. [Bibtex]
    @inproceedings{erhardt2019,
    abstract = {In this publication a logger is introduced that is small and lightweight enough to be carried by bats. It tracks the GSM downlink spectrum, enabling coarse localization. The logger contains a Sub-GHz transceiver, a microcontroller and a DC/DC converter assembled on a flexible printed circuit board (PCB) that is directly mounted on a lithium coin cell battery. The total weight is approximately 2.1 g and the size is comparable to two stacked 1 Euro Cent coins after coating the logger with epoxy resin. A flexible nickel titanium wire antenna is used for receiving GSM signals and for transmitting in the European 868 MHz short-range devices (SRD) band. In a short-term field test the functionality was proven.},
    author = {Erhardt, Stefan and Weigel, Robert and Koelpin, Alexander},
    booktitle = {Radio & Wireless Week},
    cris = {https://cris.fau.de/converis/publicweb/publication/207435679},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    peerreviewed = {Yes},
    title = {A Small and Lightweight Ultra-Low Power GSM Cell Tracker},
    type = {Konferenzschrift},
    venue = {Orlando, Florida},
    }
  • N. Duda, A. Barthule, S. Ripperger, F. Mayer, R. Weigel, and A. Koelpin, "Non-Invasive Low Power ECG for Heart Beat Detection of Bats" in 2019 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Orlando, Florida, USA, 2019 (to be published). [Bibtex]
    @inproceedings{duda2019,
    abstract = {In this paper a small size low power electrocardiogram (ECG) system which is optimized for the heart rate detection of bats is proposed. Due to the smaller size and different physical properties of animals like bats the system has to fulfill different requirements than standard human ECGs. The usecase of animal monitoring also requires an ultra-low power approach to enable long battery runtime. The described system has been evaluated with measurements on bats and compared to a commercially available ECG integrated circuit (IC). Apart from the ECG circuit itself the electrodes and the electrode position as well as the used algorithms are evaluated.},
    author = {Duda, Niklas and Barthule, Alexander and Ripperger, Simon and Mayer, Frieder and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    booktitle = {2019 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)},
    cris = {https://cris.fau.de/converis/publicweb/publication/204219980},
    year = {2019},
    month = {01},
    day = {23},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {Non-Invasive Low Power ECG for Heart Beat Detection of Bats},
    type = {Konferenzschrift},
    venue = {Orlando, Florida, USA},
    }
  • S. Schellenberger, K. Shi, T. Steigleder, F. Michler, F. Lurz, R. Weigel, and A. Koelpin, "Support Vector Machine-Based Instantaneous Presence Detection for Continuous Wave Radar Systems" in 2018 Asia-Pacific Microwave Conference, Kyoto, Japan, 2019, pp. 1465-1467. [DOI] [Bibtex]
    @inproceedings{schellenberger2018a,
    abstract = {Instantaneous detection of missing vital signs at inpatient beds enables fast intervention for cardiac arrests.
    Using a 24 GHz bistatic radar, a fast presence detection based on a support vector machine (SVM) classifer is realized. Large body motions or even small distance deviations, such as movement of the chest induced by heartbeat or breathing, are distinguishable from the measured noise of an unoccupied bed. For classifcation two features are calculated based on windowed I and Q data. Performance is evaluated by varying window sizes from 0.2 ... 1.5 s for feature calculation and training of the SVM classifer. In the resting scenario an accuracy of 99.2% and F1-score of 99.1% with windows of 0.2 s is achieved.
    }, author = {Schellenberger, Sven and Shi, Kilin and Steigleder, Tobias and Michler, Fabian and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander}, language = {English}, booktitle = {2018 Asia-Pacific Microwave Conference}, cris = {https://cris.fau.de/converis/publicweb/publication/203101192}, year = {2019}, month = {01}, day = {06}, doi = {10.23919/APMC.2018.8617181}, eventdate = {2018-11-06/2018-11-09}, faupublication = {yes}, pages = {1465--1467}, peerreviewed = {Yes}, title = {Support Vector Machine-Based Instantaneous Presence Detection for Continuous Wave Radar Systems}, type = {Journal Article}, venue = {Kyoto, Japan}, }
  • S. Linz, F. Lurz, R. Weigel, and A. Koelpin, "Extended ellipse-based reconstruction algorithm for six-port radar" in IEEE Radio and Wireless Symposium (RWS), Orlando, FL, USA, 2019 (to be published). [Bibtex]
    @inproceedings{linz2019,
    author = {Linz, Sarah and Lurz, Fabian and Weigel, Robert and Koelpin, Alexander},
    language = {English},
    publisher = {IEEE},
    booktitle = {IEEE Radio and Wireless Symposium (RWS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/205587067},
    year = {2019},
    month = {01},
    day = {20},
    eventdate = {2019-01-20/2019-01-23},
    faupublication = {yes},
    note = {unpublished},
    peerreviewed = {Yes},
    title = {Extended ellipse-based reconstruction algorithm for six-port radar},
    type = {Konferenzschrift},
    venue = {Orlando, FL, USA},
    }

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All Publications...

Most recent patents

  • F. Lurz, S. Lindner, A. Koelpin, G. Sept-Enzel, P. Dingler, and E. Halder, Elektrisches Messsystem zur Frequenzmessung und Erkennung von Störsignalen und Betriebsverfahren hierfür, 2016. [Bibtex]
    @patent{lurz_patent_2016,
    author = {Lurz, Fabian and Lindner, Stefan and Koelpin, Alexander and Sept-Enzel, Gerold and Dingler, Peter and Halder, Ernst},
    cris = {lurz_patent_2016},
    year = {2016},
    month = {10},
    day = {13},
    number = {DE 102016119562 B3},
    title = {Elektrisches Messsystem zur Frequenzmessung und Erkennung von Störsignalen und Betriebsverfahren hierfür},
    type = {patent},
    }
  • M. Trautmann, B. Sanftl, A. Koelpin, T. Heckel, L. Frey, S. Ditze, A. Endruschat, C. Joffe, A. Rosskopf, and T. Schriefer, System zur drahtlosen Übertragung von Energie und Daten, 2016. [Bibtex]
    @patent{trautmann_patent_2016,
    abstract = {Die Erfindung betrifft ein System zur drahtlosen Übertragung von Energie und Daten, bei dem mindestens zwei in einem Abstand zueinander angeordnete Spulen oder elektrische Leiterbahnen für die Übertragung von Energie vorhanden sind. Dabei ist jeweils mindestens eine elektrische Spule oder elektrische Leiterbahn zur Übertragung von Energie und/oder mindestens eine elektrische Spule oder elektrische Leiterbahn zur Übertragung von Daten an jeweils eine elektrische Wechselspannungsquelle angeschlossen. Dabei ist mindestens eine elektrische Wechselspannungsquelle modulierbar. Die elektrischen Spulen oder elektrischen Leiterbahnen zur Übertragung von Daten sind mit elektrischer Spannung mit einer Frequenz, die kleiner als die Frequenz mit der eine elektrische Spannung zur Übertragung von Energie mittels der elektrischen Spulen oder elektrischen Leiterbahnen zur Übertragung von Energie eingesetzt ist, betrieben.},
    author = {Trautmann, Martin and Sanftl, Benedikt and Koelpin, Alexander and Heckel, Thomas and Frey, Lothar and Ditze, Stefan and Endruschat, Achim and Joffe, Christopher and Rosskopf, Andreas and Schriefer, Thomas},
    cris = {trautmann_patent_2016},
    year = {2016},
    month = {09},
    day = {29},
    keywords = {Inductive Power Transfer},
    number = {102016206767.2},
    title = {System zur drahtlosen Übertragung von Energie und Daten},
    type = {patent},
    }

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

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

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


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