Alexander Koelpin

103 papers C 1Journal 21Unranked 81

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	60GHz Leaky-Wave Antenna Design for SISO Radar Systems with Angle Estimation. RWS Jasmin Gabsteiger, Dominik Langer, Christian Dorn, Alexander Koelpin, Fabian Lurz
2024	—	`conf`	A Modular 61 GHz Vital Sign Sensing Radar System for Long-term Clinical Studies. WiSNeT Marvin Wenzel, Dominik Langer, Alexander Koelpin, Fabian Lurz
2024	—	`conf`	HRV-based Monitoring of Neonatal Seizures with Machine Learning. EMBC Hui Lu, Stefan Kusnik, Dilbar Mammadova, Regina Trollmann, Alexander Koelpin
2023	—	`conf`	A novel method for determining the degree of hydrogen loading of LOHC using cavity based permittivity measurements. WiSNeT Nico Weiss, Alexander Koelpin, Irina Wiemann, Eberhard Schlücker
2023	—	`conf`	Accurate Heart Beat Detection with Doppler Radar using Bidirectional GRU Network. RWS Hui Lu, Markus Heyder, Marvin Wenzel, Nils C. Albrecht, Dominik Langer, Alexander Koelpin
2023	—	`conf`	Long-Distance Heart Sound Detection using 122 GHz CW Radar with 3D Printed High-Gain Antennas. RWS Nils C. Albrecht, Markus Heyder, Marvin Wenzel, Dominik Langer, Hui Lu, Alexander Koelpin
2023	J	`jnl`	Mobile-BAT - A Novel Ultra-Low Power Wildlife Tracking System. Sensors Stefan Erhardt, Martin Koch, Andreas Kiefer, Michael Veith, Robert Weigel, Alexander Koelpin
2023	J	`jnl`	Non-Invasive Determination of the Mass Flow Rate for Particulate Solids Using Microwaves. Sensors Amrit Zoad, Alexander Koelpin, Andreas Penirschke
2023	J	`jnl`	Sensor Fusion for the Robust Detection of Facial Regions of Neonates Using Neural Networks. Sensors Johanna Gleichauf, Lukas Hennemann, Fabian B. Fahlbusch, Oliver Hofmann, Christine Niebler, Alexander Koelpin
2023	—	`conf`	Theoretical Limits and Interpolation based Improvements of a Correlation Based True-Speed-Over-Ground Estimation. WiSNeT Torsten Reissland, Robert Weigel, Alexander Koelpin, Fabian Lurz
2022	—	`conf`	A Lightweight Robust Approach for Automatic Heart Murmurs and Clinical Outcomes Classification from Phonocardiogram Recordings. CinC Hui Lu, Julia Beatriz Yip, Tobias Steigleder, Stefan Grießhammer, Maria Heckel, Naga Venkata Sai Jitin Jami, Bjoern M. Eskofier, Christoph Ostgathe, Alexander Koelpin
2022	—	`conf`	Influence of Self-Interference in a Radar System for a Correlation Based True-Speed-Over-Ground Estimation Approach. WiSNet Torsten Reissland, Fabian Michler, Robert Weigel, Alexander Koelpin, Fabian Lurz
2022	—	`conf`	Influence of Sensor Position and Body Movements on Radar-Based Heart Rate Monitoring. BHI Liv Herzer, Annika Muecke, Robert Richer, Nils C. Albrecht, Markus Heyder, Katharina M. Jäger, Veronika Koenig, Alexander Koelpin, Nicolas Rohleder, Bjoern M. Eskofier
2021	J	`jnl`	Automated Non-Contact Respiratory Rate Monitoring of Neonates Based on Synchronous Evaluation of a 3D Time-of-Flight Camera and a Microwave Interferometric Radar Sensor. Sensors Johanna Gleichauf, Sven Herrmann, Lukas Hennemann, Hannes Krauss, Janina Nitschke, Philipp Renner, Christine Niebler, Alexander Koelpin
2021	—	`conf`	Low-Cost Six-Port for High-Volume Frequency Measurement Systems in the 2.4 GHz ISM-Band. WiSNet Benedict Scheiner, Florian Probst, Fabian Michler, Robert Weigel, Alexander Koelpin, Fabian Lurz
2021	J	`jnl`	Miniaturized Hybrid Frequency Reader for Contactless Measurement Scenarios Using Resonant Surface Acoustic Wave Sensors. Sensors Benedict Scheiner, Florian Probst, Fabian Michler, Robert Weigel, Alexander Koelpin, Fabian Lurz
2021	—	`conf`	Multibeam antenna array and software switching for low-complexity low-cost GNSS beamforming. ICL-GNSS Nabanita Sengupta, Johannes Rossouw van der Merwe, Alexander Koelpin, Alexander Rügamer, Matthias Kuhl, Wolfgang Felber
2020	—	`conf`	An Automatic Detection and Data Downlink System for Miniature Bat Loggers. RWS Stefan Erhardt, Josef Koller, Fabian Lurz, Robert Weigel, Alexander Koelpin
2020	—	`conf`	An Ultra Broadband Multi-Tone Six-Port Radar for Distance Measurements in K-Band Waveguides. RWS Simon Heining, Fabian Michler, Benedict Scheiner, Emadeldeen Hassan, Alexander Koelpin, Robert Weigel, Fabian Lurz
2020	J	`jnl`	Automatic Signal Quality Index Determination of Radar-Recorded Heart Sound Signals Using Ensemble Classification. IEEE Trans. Biomed. Eng. Kilin Shi, Sven Schellenberger, Fabian Michler, Tobias Steigleder, Anke Malessa, Fabian Lurz, Christoph Ostgathe, Robert Weigel, Alexander Koelpin
2020	—	`conf`	Automatic non-contact monitoring of the respiratory rate of neonates using a structured light camera. EMBC Johanna Gleichauf, Christine Niebler, Alexander Koelpin
2020	J	`jnl`	Continuous In-Bed Monitoring of Vital Signs Using a Multi Radar Setup for Freely Moving Patients. Sensors Sven Schellenberger, Kilin Shi, Fabian Michler, Fabian Lurz, Robert Weigel, Alexander Koelpin
2020	—	`conf`	Low-Cost Direction-of-Arrival Measurements using Multiplexed Antenna Switching. WiSNet Christian Dorn, Stefan Erhardt, Robert Weigel, Alexander Koelpin, Fabian Lurz
2020	—	`conf`	Miniaturized Ultra-Wideband Antenna Design for Human Implants. RWS Martin Frank, Fabian Lurz, Markus Kempf, Jürgen Röber, Robert Weigel, Alexander Koelpin
2020	—	`conf`	On the Impact of System Nonlinearities in Continuous-Wave Radar Systems for Vital Parameter Sensing. WiSNet Fabian Michler, Kilin Shi, Sven Schellenberger, Benedict Scheiner, Fabian Lurz, Robert Weigel, Alexander Koelpin
2020	—	`conf`	Universal low-cost Transmitarray Antenna Design at 61 GHz for Beam Steering with different Feed Antennas. WSA Martin Frank, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	—	`conf`	122 GHz Low-cost Substrate Integrated Waveguide based Leaky-Wave Antenna Design. RWS Martin Frank, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	J	`jnl`	A Clinically Evaluated Interferometric Continuous-Wave Radar System for the Contactless Measurement of Human Vital Parameters. Sensors Fabian Michler, Kilin Shi, Sven Schellenberger, Tobias Steigleder, Anke Malessa, Laura Hameyer, Nina Neumann, Fabian Lurz, Christoph Ostgathe, Robert Weigel, Alexander Koelpin
2019	—	`conf`	A Small and Lightweight Ultra-Low Power GSM Cell Tracker. WiSNet Stefan Erhardt, Robert Weigel, Alexander Koelpin
2019	—	`conf`	An Ensemble LSTM Architecture for Clinical Sepsis Detection. CinC Sven Schellenberger, Kilin Shi, Jan Philipp Wiedemann, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Compressed Sensing Based Near-Field Radar Target Imaging and Localization Employing Normalized Iterative Hard Thresholding. WiSNet Torsten Reissland, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Design of a Rotary Coupler for Data Transmission on Fast Rotating Mechanical Shafts and Roboter Arms. RWS Benedict Scheiner, Fabian Lurz, Fabian Michler, Isabella Lau, Johann Lichtblau, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Extended Ellipse-based Reconstruction Algorithm for Six-port Radar. RWS Sarah Linz, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Measurements for Onboard Communication in a High-Speed Train up to 330 km/h for Selected Scenarios at 2.45 GHz. RWS Johann Lichtblau, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Non-Invasive Low Power ECG for Heart Beat Detection of Bats. WiSNet Niklas Duda, Alexander Barthule, Simon Ripperger, Frieder Mayer, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Phased Array Approach for Vehicle-to-Infrastructure Communication in Train Stations. RWS Johann Lichtblau, Fabian Michler, Benedict Scheiner, Fabian Lurz, Martin Graebner, Mira Hundhausen, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Pulse Wave Velocity Detection Using a 24 GHz Six-Port Based Doppler Radar. RWS Fabian Michler, Kilin Shi, Sven Schellenberger, Benedict Scheiner, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Respiration Extraction from Radar Heart Sound Measurements. EMBC Sven Schellenberger, Kilin Shi, Fabian Michler, Fabian Lurz, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Segmentation of Radar-Recorded Heart Sound Signals Using Bidirectional LSTM Networks. EMBC Kilin Shi, Sven Schellenberger, Leon Weber, Jan Philipp Wiedemann, Fabian Michler, Tobias Steigleder, Anke Malessa, Fabian Lurz, Christoph Ostgathe, Robert Weigel, Alexander Koelpin
2019	—	`conf`	Synchronization Approaches and Improvements for a Low-Complexity Power Line Communication System. SmartGridComm Torsten Reissland, Matthias Kuba, Joerg Robert, Alexander Koelpin, Robert Weigel, Fabian Lurz
2019	—	`conf`	Wireless Sensor Platform for Detection of Vital Parameters of Bats. EMBC Niklas Duda, Simon Ripperger, Marco Tschapka, Frieder Mayer, Robert Weigel, Alexander Koelpin
2018	—	`conf`	A contactless system for continuous vital sign monitoring in palliative and intensive care. SysCon Kilin Shi, Christoph Will, Tobias Steigleder, Fabian Michler, Robert Weigel, Christoph Ostgathe, Alexander Koelpin
2018	J	`jnl`	BATS: Adaptive Ultra Low Power Sensor Network for Animal Tracking. Sensors Niklas Duda, Thorsten Nowak, Markus Hartmann, Michael Schadhauser, Björn Cassens, Peter Wägemann, Muhammad Nabeel, Simon Ripperger, Sebastian Herbst, Klaus Meyer-Wegener, Frieder Mayer, Falko Dressler, Wolfgang Schröder-Preikschat, Rüdiger Kapitza, Jörg Robert, Jörn Thielecke, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Contactless person identification using cardiac radar signals. I2MTC Kilin Shi, Christoph Will, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Design and characterization of antenna arrays in eWLB package for 61 GHz radar applications. RWS Martin Frank, Pol Ghesquière, Stefan Kiefl, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Detecting Respiratory Effort-Related Arousals in Polysomnographic Data Using LSTM Networks. CinC Sven Schellenberger, Kilin Shi, Melanie Mai, Jan Philipp Wiedemann, Tobias Steigleder, Björn M. Eskofier, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Examination of OFDM for wireless train-onboard communication. RWS Johann Lichtblau, Benedikt Sanftl, Fabian Lurz, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Fully integrated remote radio head and improved data transmission for inductive power transfer systems. RWS Benedikt Sanftl, Martin Trautmann, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Low-power frequency synthesizer for multi-tone six-port radar. WiSNet Fabian Lurz, Patrick Hofstetter, Stefan Lindner, Sarah Linz, Fabian Michler, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Microstrip-to-waveguide transition in planar form using a substrate integrated waveguide. RWS Benedict Scheiner, Sebastian Mann, Fabian Lurz, Fabian Michler, Stefan Erhardt, Stefan Lindner, Robert Weigel, Alexander Koelpin
2018	J	`jnl`	Reader Architectures for Wireless Surface Acoustic Wave Sensors. Sensors Fabian Lurz, Thomas Ostertag, Benedict Scheiner, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Real-time GSM broadcast receiver on a Cortex-M4 microcontroller. WiSNet Stefan Erhardt, Felix Pflaum, Robert Weigel, Alexander Koelpin
2018	—	`conf`	Ultra-low-power sensor node with wake-up-functionality for smart-sensor-applications. WiSNet Felix Pflaum, Robert Weigel, Alexander Koelpin
2017	—	`conf`	A direct RF-to-baseband quadrature subsampling receiver using a low cost ADC. RWS Matthias Haberl, Benedikt Sanftl, Martin Trautmann, Robert Weigel, Alexander Koelpin
2017	—	`conf`	Detector nonlinearity in Six-port radar. WiSNet Sarah Linz, Christoph Will, Fabian Lurz, Stefan Lindner, Sebastian Mann, Robert Schober, Robert Weigel, Alexander Koelpin
2017	C	`conf`	Dimensioning and comparison of common compensation topologies for IPT systems. ISCAS Martin Trautmann, Marius Ohlendorf, Benedikt Sanftl, Robert Weigel, Alexander Koelpin
2017	J	`jnl`	High-Speed Resonant Surface Acoustic Wave Instrumentation Based on Instantaneous Frequency Measurement. IEEE Trans. Instrum. Meas. Fabian Lurz, Stefan Lindner, Sarah Linz, Sebastian Mann, Robert Weigel, Alexander Koelpin
2017	—	`conf`	RSSI-based localization with minimal infrastructure using multivariate statistic techniques. WiSNet Felix Pflaum, Stefan Erhardt, Robert Weigel, Alexander Koelpin
2017	J	`jnl`	Robust Resource Allocation for MIMO Wireless Powered Communication Networks Based on a Non-Linear EH Model. IEEE Trans. Commun. Elena Boshkovska, Derrick Wing Kwan Ng, Nikola Zlatanov, Alexander Koelpin, Robert Schober
2017	—	`conf`	SDR implementation of an adaptive low-latency IEEE 802.11p transmitter system for real-time wireless applications. RWS Matej Kloc, Robert Weigel, Alexander Koelpin
2017	—	`conf`	Segmental polynomial approximation based phase error correction for precise near field displacement measurements using Six-Port microwave interferometers. WiSNet Christoph Will, Sarah Linz, Sebastian Mann, Fabian Lurz, Stefan Lindner, Robert Weigel, Alexander Koelpin
2016	—	`conf`	A low-cost laser barrier based vectorial velocity measurement system. IEEE SENSORS Stefan Lindner, Robert Weigel, Alexander Koelpin
2016	—	`conf`	Digital phase correction for multiplexed ADCs in low-cost Six-Port interferometers. WiSNet Fabian Lurz, Christian Dorn, Stefan Lindner, Sarah Linz, Sebastian Mann, Robert Weigel, Alexander Koelpin
2016	J	`jnl`	From radio telemetry to ultra-low-power sensor networks: tracking bats in the wild. IEEE Commun. Mag. Falko Dressler, Simon Ripperger, Martin Hierold, Thorsten Nowak, Christopher Eibel, Björn Cassens, Frieder Mayer, Klaus Meyer-Wegener, Alexander Koelpin
2016	—	`conf`	Implementation of simultaneous energy and data transfer in a contactless connector. WiSNet Martin Trautmann, Christopher Joffe, Felix Pflaum, Benedikt Sanftl, Robert Weigel, Thomas Heckel, Alexander Koelpin
2016	—	`conf`	Improved calibration procedure for six-port based precise displacement measurements. WiSNet Kamil Staszek, Sarah Linz, Fabian Lurz, Sebastian Mann, Robert Weigel, Alexander Koelpin
2016	—	`conf`	Instantaneous heartbeat detection using a cross-correlation based template matching for continuous wave radar systems. WiSNet Christoph Will, Kilin Shi, Fabian Lurz, Robert Weigel, Alexander Koelpin
2016	—	`conf`	Low-weight wireless sensor node for animal encounter detection and dual-band localization. WiSNet Martin Hierold, Markus Hartmann, Simon Ripperger, Frieder Mayer, Albert Heuberger, Robert Weigel, Alexander Koelpin
2016	—	`conf`	Precise and fast frequency determination of resonant SAW sensors by a low-cost Six-Port interferometer. I2MTC Fabian Lurz, Stefan Lindner, Sebastian Mann, Sarah Linz, Robert Weigel, Alexander Koelpin
2016	—	`conf`	Progress of Six-Port technology for industrial radar applications. WiSNet Gabor Vinci, Alexander Koelpin
2016	J	`jnl`	Pulse plated silver metallization on porosified LTCC substrates for high frequency applications. Microelectron. Reliab. Frank Steinhäußer, Armin Talai, Gabriela Sandulache, Robert Weigel, Alexander Koelpin, Wolfgang Hansal, Achim Bittner, Ulrich Schmid
2016	J	`jnl`	Robust Beamforming for SWIPT Systems with Non-linear Energy Harvesting Model. CoRR Elena Boshkovska, Alexander Koelpin, Derrick Wing Kwan Ng, Nikola Zlatanov, Robert Schober
2016	J	`jnl`	Robust Resource Allocation for MIMO Wireless Powered Communication Networks Based on a Non-linear EH Model. CoRR Elena Boshkovska, Derrick Wing Kwan Ng, Nikola Zlatanov, Alexander Koelpin, Robert Schober
2016	—	`conf`	Robust beamforming for SWIPT systems with non-linear energy harvesting model. SPAWC Elena Boshkovska, Alexander Koelpin, Derrick Wing Kwan Ng, Nikola Zlatanov, Robert Schober
2016	J	`jnl`	Six-Port Based Interferometry for Precise Radar and Sensing Applications. Sensors Alexander Koelpin, Fabian Lurz, Sarah Linz, Sebastian Mann, Christoph Will, Stefan Lindner
2016	—	`conf`	Substrate integrated waveguide fed antenna for 61 GHz ultra-short-range interferometric radar systems. WiSNet Sebastian Mann, Fabian Lurz, Sarah Linz, Stefan Lindner, Christoph Will, S. Wibbing, Robert Weigel, Alexander Koelpin
2015	—	`conf`	100 GHz reflectometer for sensitivity analysis of MEMS sensors comprising an intermediate frequency Six-port receiver. WiSNet Sarah Linz, Florian Oesterle, Armin Talai, Stefan Lindner, Sebastian Mann, Francesco Barbon, Robert Weigel, Alexander Koelpin
2015	—	`conf`	A low power 24 GHz radar system for occupancy monitoring. RWS Fabian Lurz, Sebastian Mann, Sarah Linz, Stefan Lindner, Francesco Barbon, Robert Weigel, Alexander Koelpin
2015	—	`conf`	ADC depending limitations for Six-Port based distance measurement systems. WiSNet Stefan Lindner, Francesco Barbon, Sarah Linz, Fabian Lurz, Sebastian Mann, Robert Weigel, Alexander Koelpin
2015	—	`conf`	Combined localization and data transmission in energy-constrained wireless sensor networks. WiSNet Thorsten Nowak, Alexander Koelpin, Falko Dressler, Markus Hartmann, Lucila Patino, Jörn Thielecke
2015	—	`conf`	Diode detector design for 61 GHz substrate integrated waveguide Six-Port radar systems. WiSNet Sebastian Mann, Stefan Erhardt, Stefan Lindner, Fabian Lurz, Sarah Linz, Francesco Barbon, Robert Weigel, Alexander Koelpin
2015	—	`conf`	Intelligent signal processing routine for instantaneous heart rate detection using a Six-Port microwave interferometer. ISPACS Christoph Will, Kilin Shi, Fabian Lurz, Robert Weigel, Alexander Koelpin
2015	—	`conf`	Low-weight wireless sensor network for encounter detection of bats. WiSNet Martin Hierold, Simon Ripperger, Darija Josic, Frieder Mayer, Robert Weigel, Alexander Koelpin
2015	—	`conf`	Protocol design for ultra-low power wake-up systems for tracking bats in the wild. ICC Falko Dressler, Bastian Bloessl, Martin Hierold, Chia-Yu Hsieh, Thorsten Nowak, Robert Weigel, Alexander Koelpin
2015	—	`conf`	Underwater interferometric radar sensor for distance and vibration measurement. WiSNet Michael Sporer, Fabian Lurz, Eberhard Schlücker, Robert Weigel, Alexander Koelpin
2014	—	`conf`	A tank level sensor based on Six-Port technique comprising a quasi-TEM waveguide. WiSNet Sebastian Mann, Stefan Lindner, Francesco Barbon, Sarah Linz, Armin Talai, Robert Weigel, Alexander Koelpin
2014	—	`conf`	Fast in-situ diode detector characterization for Six-Port interferometer receivers. WiSNet Francesco Barbon, Stefan Lindner, Sebastian Mann, Sarah Linz, Robert Weigel, Alexander Koelpin
2014	J	`jnl`	Multiport Technology: New Perspectives and Applications. J. Electr. Comput. Eng. Serioja Ovidiu Tatu, Adriana Serban, Alexander Koelpin, Mohamed Helaoui
2014	—	`conf`	Numerical investigations on the quasi-stationary response of antennas to wideband LFMCW excitation. EUSIPCO Markus Gardill, Dennis Kay, Robert Weigel, Alexander Koelpin
2014	—	`conf`	System and signal design for an energy-efficient multi-frequency localization system. WiSNet Thorsten Nowak, Martin Hierold, Alexander Koelpin, Markus Hartmann, Hans-Martin Troger, Jörn Thielecke
2014	—	`conf`	Water temperature measurement by microwave six-port interferometry at 24 GHz. WiSNet Armin Talai, Sebastian Mann, Robert Weigel, Alexander Koelpin
2013	J	`jnl`	A Compact, Versatile Six-Port Radar Module for Industrial and Medical Applications. J. Electr. Comput. Eng. Sarah Linz, Gabor Vinci, Sebastian Mann, Stefan Lindner, Francesco Barbon, Robert Weigel, Alexander Koelpin
2013	—	`conf`	A Review and Comparative Study of On- and Off-Body Performance of Platform-Tolerant UHF RFID Tag Antennas. BODYNETS Markus Gardill, Klaus Finkenzeller, Walter Hinz, Georg Fischer, Robert Weigel, Alexander Koelpin
2013	—	`conf`	A high performance line filter for narrowband power line communication testbed applications. SmartGridComm Steffen Mueller, Fabian Lurz, Robert Weigel, Alexander Koelpin
2013	—	`conf`	Design of a robust and low-cost monocone antenna element for use in vehicle roof-mounted antenna arrays. RWS Markus Gardill, Georg Fischer, Robert Weigel, Alexander Koelpin
2012	—	`conf`	A 77 GHz direction of arrival detector system with SiGe integrated six-port receiver. RWS Gabor Vinci, Benjamin Laemmle, Francesco Barbon, Robert Weigel, Alexander Koelpin
2012	J	`jnl`	A 77-GHz SiGe Integrated Six-Port Receiver Front-End for Angle-of-Arrival Detection. IEEE J. Solid State Circuits Benjamin Laemmle, Gabor Vinci, Linus Maurer, Robert Weigel, Alexander Koelpin
2012	—	`conf`	An area-efficient 130 nm CMOS baseband processing unit for 24 GHz FMCW radar positioning. ISSSE Alban Ferizi, Philipp Baust, Melanie Jung, Georg Fischer, Robert Weigel, Alexander Koelpin
2012	—	`conf`	Design and implementation of a fixed-point radix-4 FFT optimized for local positioning in wireless sensor networks. SSD Alban Ferizi, Bernhard Hoeher, Melanie Jung, Georg Fischer, Alexander Koelpin
2012	—	`conf`	Filter design aspects in analog receiver front-ends for frequency scanning applications. ISSSE Gunther Dehm-Andone, Raphael Mzyk, Frank Hausknecht, Georg Fischer, Robert Weigel, Alexander Koelpin
2012	—	`conf`	Signal processing strategies for six-port based Direction of Arrival detector systems. SSD Francesco Barbon, Gabor Vinci, Stefan Lindner, Robert Weigel, Alexander Koelpin
2012	—	`conf`	The enhanced six-port architecture: A measurement based proof of concept. WiSNet Alexander Koelpin, Stefan Lindner, Gabor Vinci, Benjamin Laemmle, Robert Weigel
2008	J	`jnl`	Six-Port Receiver Analog Front-End: Multilayer Design and System Simulation. IEEE Trans. Circuits Syst. II Express Briefs Sebastian M. Winter, Alexander Koelpin, Robert Weigel