Universitaet Linz

The Institute for Communications Engineering and RF-Systems (NTHFS) at the Johannes Kepler University (JKU) in Linz, Austria, has been working on concepts and SiGe-HBT-based circuit design for automotive radar sensors and mm-wave sensors in various frequency ranges up to 170 GHz,  architectural concepts for multi-band/multi-mode capable transceivers for cellular communication systems, signal processing for radar sensing and wireless communications, and wireless sensor networks for industrial applications. The team involved in the DOTFIVE project belongs to the RF-Systems department of NTHFS, headed by Prof. Stelzer.


Role in the project

JKU will contribute its expertise in Si-based integrated circuit design and RF system design within WP4 by designing radar transceivers and its core components, such as VCO, divider, mixer, and amplifier. Furthermore, JKU will be involved in RF IC packaging and antenna integration to realize compact-size, low-cost, and efficient modules for next-generation applications in the emerging field of (sub-)mm-wave sensing. Also baseband electronics and evaluation algorithms will be developed within the project.


Mechatronics Building in the Science Park at Johannes Kepler University, Linz, Austria

Mechatronics Building in the Science Park at Johannes Kepler University, Linz, Austria

On-Wafer Measurements



140 GHz Single Chip Transceiver



Key people involved in the project

Andreas Stelzer received the Diploma Engineer degree in electrical engineering from the Technical University of Vienna, Vienna, Austria, in 1994, and the Dr. techn. degree (Ph.D.) in mechatronics from the Johannes Kepler University, Linz, Austria, in 2000.
Since 2007, he has been Head of the Christian Doppler Laboratory for Integrated Radar Sensors, and since 2011 he is full Professor at Johannes Kepler University, heading the department for RF-Systems. He has authored or coauthored over 280 journal and conference papers. His research is focused on microwave sensor systems for industrial and automotive applications, RF and microwave subsystems, surface acoustic wave (SAW) sensor systems and applications, as well as digital signal processing for sensor signal evaluation.
Dr. Stelzer was recipient of several awards including the 2008 IEEE Microwave Theory and Techniques Society (IEEE MTT-S) Outstanding Young Engineer Award and the 2011 IEEE Microwave Prize. Furthermore he was recipient of the 2012 European Conference on Antennas and Propagation (EuCAP) Best Measurement Paper Prize, the 2012 Asia Pacific Conference on Antennas and Propagation (APCAP) Best Paper Award, the 2011 German Microwave Conference (GeMiC) Best Paper Award, as well as the EEEfCOM Innovation Award and the European Microwave Association (EuMA) Radar Prize of the European Radar Conference.


Martin Jahn received the Dipl.-Ing. degree in mechatronics and the Dr.techn. degree in mechatronics from the Johannes Kepler University, Linz, Austria, in 2007 and 2012, respectively. In 2007, he joined the Institute for Communications Engineering and RF-Systems as a Research Assistant and in 2012 he became a Senior Researcher. His interests include RF and millimeter-wave integrated circuit design (especially in SiGe technology) with emphasis on fully integrated system design for multi-channel millimeter-wave sensors.


Andreas Springer is a full professor at JKU/ICIE. He has been engaged in research work on GaAs integrated millimetre-wave TED's, MMIC's, millimeter-wave sensor systems, and UWB. His current research interests are focused on wireless communication systems, single- and multi-carrier communications, architectures and algorithms for multi-band/multi-mode transceivers, UMTS/HSDPA/LTE, and recently wireless sensor networks. In these fields, he has published more than 150 papers in journals and at international conferences.


Recent publications / patents

  • R. Feger, C. Wagner, S. Schuster, S. Scheiblhofer, H. Jäger, and A. Stelzer, “A 77-GHz FMCW MIMO Radar Based on an SiGe Single Chip Transceiver,” IEEE Trans. Microwave Theory Tech., vol. 57, no. 5, May 2009, pp. 1020–1035, IEEE Microwave Prize 2011

  • M. Jahn, C. Wagner, A. Stelzer , “DC-Offset Compensation Concept for Monostatic FMCW Radar Transceivers,” IEEE Microwave and Wireless Components Letters, vol. 20, no. 9, Sept. 2010, pp. 525-527.

  • M. Jahn, H. Knapp, A. Stelzer , “A 122-GHz SiGe-Based Signal-Generation Chip Employing a Fundamental-Wave Oscillator With Capacitive Feedback Frequency-Enhancement,” IEEE Journal of Solid-State Circuits, vol. 46, no. 9, Sept. 2011, pp. 2009-2020.

  • M. Jahn, R. Feger, C. Wagner, Z. Tong, and A. Stelzer, "A Four-Channel 94-GHz SiGe-Based Digital Beamforming FMCW Radar," IEEE Trans. Microw. Theory and Techn., vol. 60, no. 3, March 2012, pp. 861-869.

  • M. Jahn, K. Aufinger, T. Meister, and A. Stelzer, "125 to 181 GHz Fundamental-Wave VCO Chips in SiGe Technology," IEEE Radio Frequency Integrated Circuits Symp. (RFIC), June 2012, pp. 87-90.
    M. Jahn, K. Aufinger, and A. Stelzer, "A 140-GHz Single-Chip Transceiver in a SiGe Technology," Europ. Mircow. Integrated Circuits Conference 2012, Oct. 2012, pp. 361-364.

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