Tutorials
Full-Duplex Phased Array Antennas and Circuits
Many wireless systems could benefit from the ability to transmit and receive on the same frequency at the same time, which is known as in-band full-duplex (IBFD) and/or simultaneous transmit and receive (STAR). This technology could lead to enhanced spectral efficiency for future wireless networks, such as sixth-generation (6G) and beyond, and/or could enable capabilities and applications that were previously considered impossible, such as IBFD with phased array systems. In this workshop, experts from academic and federal research institutions will discuss the various approaches that can be taken to suppress the inherent self-interference that is generated in IBFD phased array systems, and will present both static and adaptive techniques that span across the propagation, analog and digital domains. Presentations will contain details and measured results that encompass unique array topologies, RF cancellation and other isolation methods as well as advances in adaptive beamforming and digital filtering. Throughout this workshop, state-of-the-art IBFD phased array antenna, circuits, and systems that utilize these technologies will be provided as practical examples for various applications.
Kenneth Kolodziej is a technical staff member in the RF Technology Group at Massachusetts Institute of Technology (MIT) Lincoln Laboratory, where he is a principal investigator on wideband electronic and in-band full-duplex (IBFD) systems. Since joining Lincoln Laboratory, Mr. Kolodziej has conducted research on RF, microwave and photonic circuits, including antenna, radar and communications systems. He also holds a Lecturer position with the MIT Department of Electrical Engineering and Computer Science, where he has taught an undergraduate electromagnetics course as well as several “Build-a-Radar” and “Hands-on Full-Duplex Radio” courses on MIT campus. He received his BE and ME degrees in electrical engineering from Stevens Institute of Technology in Hoboken, New Jersey.
Mr. Kolodziej is the Editor of the In-Band Full-Duplex Wireless Systems Handbook (Artech House), an associate editor of the IEEE Microwave Magazine since 2021, and was a guest editor of the IEEE Transactions on Microwave Theory and Techniques in 2023. He is a senior member of the IEEE as well as a member of the IEEE MTT-S Wireless Communications (MTT-23) technical committee, and has been a member of the technical program committees of several conferences, including the IEEE International Microwave Symposium since 2019; the IEEE Radio & Wireless Symposium since 2022; the IEEE International Symposium on Antennas and Propagation since 2017; the IEEE International Symposium on Phased Array Systems and Technology since 2019; and the IEEE International Conference on Communications since 2020.
Dejan Filipovic is Hudson Moore Jr. Endowed Chair with the Department of Electrical, Computer, and Energy Engineering at University of Colorado Boulder. He received the Diploma Engineering degree in electrical engineering from the University of Nis, Serbia in 1994, and the M.S.E.E. and PhD degrees from the University of Michigan, Ann Arbor in 1999 and 2002, respectively. From 1994 to 1997, he was a research assistant at the University of Nis. He became an assistant professor in electrical and computer engineering the University of Colorado in 2002 and was promoted to associate and full professor in 2009 and 2015, respectively. His broader research interests are in applied electromagnetics including antenna theory and design with emphasis on frequency independent and wideband antennas; development of passive millimeter-wave components, systems, and electronic warfare front-ends; low-cost fabrication of RF systems; simultaneous transmit and receive; and multi-physics, multi-scale modeling. His research projects have been funded by the Department of Defense including DARPA, ONR, and NRL, National Science Foundation, and industry including Lockheed Martin, Northrop Grumman, BAE Systems, L3, LGS, First RF, Applied EM, etc. Prof. Filipovic received the Nikola Tesla award for outstanding diploma thesis and best paper award at the 2002 IEEE Antennas and Propagation Symposium. His students have been constantly placed in the finals of the various student paper competitions and have won several times including best paper awards at IEEE Antennas and Propagation Symposium, Antenna Application Symposium, ASIAEM Conference, and GOMACTech. Prof. Filipovic was a two-time recipient of the University of Colorado Provost’s Faculty Achievement Award (2008 and 2011) and ECEN Department Holland’s Teaching Award (2013). He has graduated twenty four PhD students and six MSc thesis students, and currently advises nine PhD students, two MS students, and two post-doctoral fellows. Prof. Filipovic has co-authored 4 book chapters on spiral and frequency independent antennas, one book chapter on STAR antennas, and many peer reviewed journal and conference papers. Prof. Filipovic is a Fellow of IEEE, Associate Editor for the IEEE Transactions on Antennas and Propagation, and Vice-Chair of the 2022 IEEE AP-S/URSI conference.
Zoya Popovic received the Dipl.Ing. degree from the University of Belgrade, Serbia, Yugoslavia, in 1985, and the PhD degree from the California Institute of Technology, Pasadena, in 1990. Since 1990, she has been with the University of Colorado Boulder, where she is currently a Distinguished Professor and holds the Lockheed Martin Endowed Chair in RF Engineering in the Department of Electrical, Computer and Energy Engineering. In 2001, she was a visiting professor with the Technical University of Munich, Munich, Germany. Since 1991, she has graduated more than 50 PhD students.
Her research interests include high-efficiency, low-noise, and broadband microwave and millimeter-wave circuits, quasi-optical millimeter-wave techniques for imaging, smart and multibeam antenna arrays, intelligent RF front ends, and wireless powering for batteryless sensors. Popovic was the recipient of the 1993 and 2006 Microwave Prizes presented by the IEEE Microwave Theory and Techniques Society (IEEE MTT-S) for the best journal papers, and received the 1996 URSI IssacKoga Gold Medal. In 1997, Eta Kappa Nu students chose her as a Professor of the Year. She was the recipient of a 2000 Humboldt Research Award for Senior U.S. Scientists from the German Alexander von Humboldt Stiftung. She was elected a Foreign Member of the Serbian Academy of Sciences and Arts in 2006. She was also the recipient of the 2001 Hewlett-Packard(HP)/American Society for Engineering Education(ASEE) Terman Medal for combined teaching and research excellence.