Distinguished Microwave Lecturers' Talks
Monday, 17 January 2022, 8:00am - 11:45am
Organizer: Markus Gardill, InnoSenT GmbH, Germany
RF Design For Ultra-Low-Power Wireless Communication Systems: Efficiently Miniaturizing And Passively Sensing
Speaker: Jasmin Grosinger, Graz University of Technology, Austria
In this talk, I will present radio frequency (RF) design solutions for wireless sensor nodes to solve sustainability issues in the Internet of things (IoT), which arise due to the massive deployment of wireless IoT nodes on environmental and economic levels. Engineers can apply these RF design solutions to improve the ultra-low-power operation of IoT nodes, avoid batteries’ eco-toxicity, and decrease maintenance costs due to battery replacement. The presented solutions offer high integration levels based on system-on-chip and system-in-package concepts in low-cost complementary metal-oxide-semiconductor technologies to limit costs and carbon footprints of these nodes. Within this research context, I will present solutions for ultra-low-power wireless communication systems based on high frequency (HF) and ultra-high frequency (UHF) radio frequency identification (RFID) technologies. In particular, I will present RF design solutions for HF and UHF RFID systems that reveal how to develop passive miniaturized IoT nodes that operate robustly in harsh application environments and how to create batteryless or rather passive IoT nodes, which provide passive sensing capabilities and work robustly in their respective application environment.
Jasmin Grosinger (S’09–M’12–SM’19) received the Dipl.-Ing. (M.Sc.) degree (Hons.) in telecommunications and Dr.techn. (Ph.D.) degree (Hons.) from the Vienna University of Technology, Vienna, Austria, in 2008 and 2012, respectively. In January 2021, she received her Venia Docendi in radio frequency (RF) and microwave engineering from the Graz University of Technology, Graz, Austria. In her postdoctoral thesis, she examines the RF design for ultra-low-power wireless communication systems.
From 2008 to 2013, she was a Project Assistant with the Institute of Telecommunications, Vienna University of Technology, where she was involved in various projects dealing with radio frequency identification (RFID) technologies. In 2011, she was a Laboratory Associate with Disney Research, Pittsburgh, PA, USA, where she was involved in an RFID sensor project. From 2013 to 2017, she was a Postdoctoral Researcher with the Institute of Microwave and Photonic Engineering, Graz University of Technology, focusing on RFID technologies research. In 2017, she was elevated to an Assistant Professor at the same institute, focusing on ultra-low-power RF components and systems. By 2021, she is an Associate Professor in this research field. In 2018 and 2019, she was a Guest Professor at the Institute of Electronics Engineering, Friedrich-Alexander-University (FAU) Erlangen-Nuremberg, Erlangen, Germany. Currently, she is again a Guest Professor at the Institute of Electronics Engineering, FAU Erlangen-Nuremberg. Prof. Grosinger has authored more than 50 peer-reviewed publications and holds one US patent. She is actively involved in the Technical Program and Steering Committees of various RF-related conferences and is Associate Editor of the IEEE Microwave and Wireless Components Letters. She is a member of the IEEE Microwave Theory and Techniques Society (MTT-S), the European Microwave Association, and the Union Radio-Scientifique Internationale Austria, Commission D. Within MTT-S, she serves as Distinguished Microwave Lecturer (Tatsuo Itoh DML class of 2022-2024), as a member of the IEEE MTT-S Technical Committees MTT-25 Wireless Power Transfer and Energy Conversion Committee and MTT-26 RFID, Wireless Sensors and IoT Committee, as IoT Working Group member of the Technical Coordination & Future Directions Committee, and as Co-Chair of the Women in Microwaves Sub-Committee of the Member and Geographic Activities Committee.
Portable Radar Systems for Life Activity Sensing, Anomaly Detection, and Human Tracking
Speaker: Changzhi Li, Texas Tech University, USA
By sensing various life activities with microwave signals, portable radar sensors with state-of-the-art front-end and measurement algorithms have great potential to improve healthcare, security, and human-machine interface. This presentation will first provide an overview of the state-of-the-art smart radar sensors powered by advanced technologies including beamforming, multiple-input and multiple-output (MIMO), synthetic aperture, and deep learning. A few examples based on different sensing front-end architectures will be discussed. In addition, the use of nonlinear technologies for enhanced target identification will be reported. Case studies at this exciting human-microwave frontier will be given on physiological signal sensing, non-contact human-computer interface, driving behavior recognition, indoor localization, and anomaly detection. As smart radar sensors enter the healthcare, automotive, and smart living sectors of daily life, measures to enhance its security against malicious attacks will also be discussed. Finally, this talk will conclude with future industrial and academic R&D outlooks for smart radar sensors.
Changzhi Li received the Ph.D. degree in electrical engineering from the University of Florida, Gainesville, FL, in 2009. He is a Professor at Texas Tech University. His research interest is microwave/millimeter-wave sensing for healthcare, security, and human-machine interface.
Dr. Li is a Microwave Theory and Techniques Society (MTT-S) Distinguished Microwave Lecturer of the Tatsuo Itoh class of 2022-2024. He was a recipient of the IEEE Microwave Theory and Techniques Society (MTT-S) Outstanding Young Engineer Award, the IEEE Sensors Council Early Career Technical Achievement Award, the ASEE Frederick Emmons Terman Award, the IEEE-HKN Outstanding Young Professional Award, and the U.S. National Science Foundation (NSF) Faculty CAREER Award. He is an Associate Editor of the IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES and the IEEE JOURNAL OF ELECTROMAGNETICS, RF AND MICROWAVES IN MEDICINE AND BIOLOGY. He is the TPC chair of the 2022 IEEE Radio & Wireless Week. He served as the chair of the MTT-S Technical Committee “Biological Effect and Medical Applications of RF and Microwave” from 2018 to 2019, a TPC Co-Chair for the IEEE MTT-S International Microwave Biomedical Conference from 2018 to 2019, and the IEEE Wireless and Microwave Technology Conference from 2012 to 2013.
Distributed Phased Arrays: Challenges And Recent Progress
Speaker: Jeffrey Nanzer, Michigan State University, USA
There has been significant research devoted to the development of distributed microwave wireless systems in recent years. The progression from large, single-platform wireless systems to collections of smaller, coordinated systems on separate platforms enables significant benefits for radar, remote sensing, communications, and other applications. The ultimate level of coordination between platforms is at the wavelength level, where separate platforms operate as a coherent distributed system. Wireless coherent distributed systems operate in essence as distributed phased arrays, and the signal gains that can be achieved scale proportionally to the number of transmitters squared multiplied by the number of receivers, providing potentially dramatic increases in wireless system capabilities. Distributed array coordination requires accurate control of the relative electrical states of the nodes. Generally, such control entails wireless frequency synchronization, phase calibration, and time alignment, but for remote sensing operations, phase control also requires high-accuracy knowledge of the relative positions of the nodes in the array to support beamforming.
This lecture presents an overview of the challenges involved in distributed phased array coordination, and describes recent progress on microwave technologies that address these challenges. Requirements for achieving distributed phase coherence at microwave frequencies are discussed, including the impact of component non-idealities such as oscillator drift on beamforming performance. Architectures for enabling distributed beamforming are reviewed, along with the relative challenges between transmit and receive beamforming. Microwave and millimeter-wave technologies enabling wireless phase-coherent synchronization are discussed, focusing on technologies for high-accuracy internode ranging, wireless frequency transfer, and high-accuracy time alignment. The lecture concludes with a discussion of open challenges in distributed phased arrays, and where microwave technologies may play a role.
Jeffrey Nanzer (S’02-M’08-SM’14) received the B.S. degree in electrical engineering and computer engineering from Michigan State University, East Lansing, MI, USA, in 2003, and the M.S. and Ph.D. degrees in electrical engineering from The University of Texas at Austin, Austin, TX, USA, in 2005 and 2008, respectively. From 2008 to 2009, he was a Postdoctoral Fellow with Applied Research Laboratories, The University of Texas at Austin, where he was involved in designing electrically small HF antennas and communication systems. From 2009 to 2016, he was with The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA, where he created and led the Advanced Microwave and Millimeter-Wave Technology Section. In 2016, he joined the Department of Electrical and Computer Engineering, Michigan State University, where he is currently the Dennis P. Nyquist Associate Professor. He has authored or co-authored more than 150 refereed journal and conference papers, authored the book Microwave and Millimeter-Wave Remote Sensing for Security Applications (Artech House, 2012), and co-authored chapters in the books Wireless Transceiver Circuits (Taylor and Francis, 2015) and Short-Range Micro-Motion Sensing: Hardware, signal processing and machine learning (IET, 2019). His current research interests include distributed arrays, radar and remote sensing, antennas, electromagnetics, and microwave photonics.
Dr. Nanzer was a founding member and the First Treasurer of the IEEE APS/MTT-S Central Texas Chapter. He is also a member of the IEEE Antennas and Propagation Society Education Committee and the USNC/URSI Commission B. He was a recipient of the Outstanding Young Engineer Award from the IEEE Microwave Theory and Techniques Society in 2019, the DARPA Director’s Fellowship in 2019, the National Science Foundation (NSF) CAREER Award in 2018, the DARPA Young Faculty Award in 2017, and the JHU/APL Outstanding Professional Book Award in 2012. He has served as the Vice-Chair for the IEEE Antenna Standards Committee from 2013 to 2015 and the Chair of the Microwave Systems Technical Committee (MTT-16) of the IEEE Microwave Theory and Techniques Society from 2016 to 2018. He is also an Associate Editor of the IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION.
Fundamentals of RF and mm-Wave Power Amplifier Designs
Speaker: Hua Wang, Swiss Federal Institute of Technology Zürich (ETH Zürich), Swiss
This distinguished lecture talk presents an overview of RF and mm-wave Power Amplifier (PA) designs in silicon, focusing on the fundamentals, design practices, and advanced PA topologies. First, the distinguished lecture talk will introduce PA performance metrics and their impacts on wireless systems. Next, it presents PA device-level designs, including active device large-signal operations, nonlinearity, and stability as well as passive network impedance transformation and power combining. Basic load-/source-pull simulations and biasing techniques will be covered. Then, the talk will go through popular PA classes of linear and switching PAs. The talk will cover a wide variety of advanced PA topologies that enhance bandwidth, efficiency and linearity. Finally, the distinguished lecture talk will conclude with several PA design examples at RF and mm-Wave frequencies.
Hua Wang is a full professor and chair of electronics at Department of Information Technology and Electrical Engineering (D-ITET) of Swiss Federal Institute of Technology Zürich (ETH Zürich). He is the director of the ETH Integrated Devices, Electronics, And Systems (IDEAS) Group. Prior to that, he was an associate professor with tenure at the School of Electrical and Computer Engineering (ECE) at Georgia Institute of Technology, USA. He held the Demetrius T. Paris professorship at School of ECE at Georgia Tech. He was the founding director of Georgia Tech Center of Circuits and Systems (CCS) and the director of the Georgia Tech Electronics and Micro-System (GEMS) lab. He worked at Intel Corporation and Skyworks Solutions from 2010 to 2011. He received his M.S. and Ph.D. degrees in electrical engineering from the California Institute of Technology, Pasadena, in 2007 and 2009, respectively.
Dr. Wang is interested in innovating analog, mixed-signal, RF, and mm-Wave integrated circuits and hybrid systems for wireless communication, sensing, and bioelectronics applications. He has authored or co-authored over 200 peer-reviewed journal and conference papers.
Dr. Wang received the DARPA Director’s Fellowship Award in 2020 (the first awardee in Georgia Tech’s history), the DARPA Young Faculty Award in 2018, the National Science Foundation CAREER Award in 2015, the Qualcomm Faculty Award in 2020 and 2021, the IEEE MTT-S Outstanding Young Engineer Award in 2017, the Georgia Tech Sigma Xi Young Faculty Award in 2016, the Georgia Tech ECE Outstanding Junior Faculty Member Award in 2015, and the Lockheed Dean’s Excellence in Teaching Award in 2015.
His research group has won multiple academic awards and best paper awards, including the 2019 Marconi Society Paul Baran Young Scholar, the IEEE RFIC Best Student Paper Awards (2014, 2016, 2018, and 2021), the IEEE International Microwave Symposium (IMS) Best Student Paper Award 2021, the IEEE CICC Outstanding Student Paper Awards (2015, 2018, and 2019), the IEEE CICC Best Conference Paper Award (2017), the 2016 IEEE Microwave Magazine Best Paper Award, and the IEEE SENSORS Best Live Demo Award (2nd Place in 2016).
Dr. Wang is a Technical Program Committee (TPC) Member for IEEE ISSCC, RFIC, CICC, and BCICTS conferences. He is a Steering Committee Member for IEEE RFIC and CICC. He is the Conference Chair for CICC 2019 and Conference General Chair for CICC 2020. He is a Distinguished Microwave Lecturer (DML) for the IEEE Microwave Theory and Techniques Society (MTT-S) for the term of 2022-2024. He was a Distinguished Lecturer (DL) for the IEEE Solid-State Circuits Society (SSCS) for the term of 2018-2019. He was the Chair of the Atlanta’s IEEE CAS/SSCS joint chapter that won the IEEE SSCS Outstanding Chapter Award in 2014.