Date & Time: Sunday, January 19, 2014, 1:00 – 5:00 pm
1) PA Design: From Device Model to High-Performance Circuit
Chairs: José A. García, University of Cantabria, Spain and Zoya Popovic, University of Colorado at Boulder, USA.
Power amplifiers (PA) have a vital role in modern wireless communication and sensor systems. The requirements for simultaneously providing improved efficiency and linearity, multi-band or broadband coverage, together with those of high output power and frequency of operation, have been forcing an aggressive evolution of design techniques. In order to arrive to an optimal practical solution, advancements at the device modeling level are necessarily combined with novel amplifying circuit topologies and with system level considerations, where the digital processing of the signal may offer additional benefits.
This workshop will address a wide variety of topics related to PA design. Starting with an overview presentation, covering technology and design issues at microwave and millimeter-wave bands, the relevance of dedicated characterization procedures and accurate transistor models will be highlighted. A wide variety of power MMIC designs, based on the disruptive GaN HEMT technology, will be then described, in which PAs are complemented by associated circuitry (limiters and switches). Harmonically terminated and switched-mode amplifying theory can be shown to lead to multi-band and broadband architectures, integrated in high performance Doherty topologies. The application of these and other high efficiency techniques to mm-wave PAs will be also under consideration for Si and SiGe processes. Finally, wideband and efficient solutions based on load modulation concepts, such as the Doherty and outphasing techniques, are covered in a common framework.
Microwave and Millimeter-Wave Power Amplifiers: Devices, Technology, Design, Benchmarks
James Komiak, BAE Systems, USA
Device Modeling for PA Design
Stéphane Dellier, AMCAD Engineering, France
High Power GaN MMICs
Charles Campbell, Triquint, USA
Design Strategies for High Efficiency PAs
Paolo Colantonio, University of Rome Tor Vergata, Italy
High Efficiency Techniques for Millimeter-Wave PAs in Silicon/Silicon Germanium Processes
James F. Buckwalter, University of California, San Diego, USA
Wideband and Efficient Power Amplifiers based on Advanced Doherty and Outphasing Techniques
Christian Fager, Chalmers University of Technology, Sweden
2) Diversity in Biomedical Radar Applications
Chairs: Dominique Schreurs, KU Leuven, Belgium and Changzhi Li, Texas Tech University, USA
Radars are traditionally associated with traffic and defense applications. In recent years, their distinctive advantage in biomedical applications has been recognized. Biomedical radars offer remote and thus contactless and non-invasive monitoring. This workshop presents an overview on the diversity in biomedical radar uses. Applications range from vital signs monitoring, human gait tracking, tumor tracking, fall detection, to cancer detection, etc. The underlying operational principles can usually be traced down to either CW or UWB radar techniques, and therefore a panel discussion is planned to explore the pros and cons of each approach.
True Human Presence Detection with Doppler Radar Occupancy Sensors
Victor Lubecke, University of Hawaii, USA
System-on-Chip UWB Pulse Radar for Contactless Detection of Respiratory Patterns in Adults and Infants
Domenico Zito, University of Cork, Ireland
SFCW Radar for Contactless Fall Detection and Human Gait Monitoring
Dominique Schreurs, KU Leuven, Belgium
Microwave Imaging at the University of Calgary: Prototype Systems and Patient Studies
Elise Fear, University of Calgary, Canada
Use of CW Radar for Tumor Tracking in Motion-Adaptive Cancer Radiotherapy
Changzhi Li, Texas Tech University, USA
UWB vs. (SF)CW Approaches in Biomedical Radars
3) RF Energy Harvesting: Challenges and Applications
Chair: A. Georgiadis, CTTC, Spain and Manos M. Tentzeris, Georgia Institute of Technology, USA
Ambient RF energy harvesting and RF power transmission enable the wireless powering of sensors, RFIDs and communication nodes. Advances in rectenna, voltage conversion and energy management circuits, complemented by progress in low power and power efficient circuit and sensor design, have spurred numerous research efforts and have enabled new innovating applications towards ubiquitous sensing and machine-to-machine communication.
There are numerous challenges to be addressed, such as compact antennas and efficient voltage conversion circuits, system architectures, signal design for maximum power transfer, and the trade-off between information and power transmission. This workshop provides an insight to RF energy harvester devices and their applications. The speakers will interact with the attendees emphasizing on future trends, expectations and opportunities of RF energy harvesting as well as practical design aspects and performance evaluation.
Multiband RF energy harvester design and signal optimization for maxeimum RF-DC conversion efficiency
Ana Collado, CTTC , Spain
Inkjet-Printed Nanotechnology-Enabled IoT Inter/Intra-chip and “Zero-Power” Wireless Communication and Sensing Nodes
Manos Tentzeris, Georgia Institute of Technology, USA
Design rules for energy autonomous systems powered by ambient-available RF sources
Alessandra Costanzo, University of Bologna, Italy
Wireless powering of battery-less sensors through low power RF energy harvesting
Zoya Popovic, University of Colorado, Boulder, USA
Chipless tag evolution toward RFID-sensors for IoT
Luca Roselli, University of Perugia, Italy. Co-Authors: F. Alimenti, C. Mariotti, M. Virili, G. Orecchini, P. Mezzanotte
4) Recent Advances on Radar Systems for Defense/Security, Localization and other Emerging Applications
Chairs: Roberto Gómez-García, University of Alcalá, Spain and Arjuna Madanayake, University of Akron, OH, USA
This workshop explores recent achievements in the exciting field of radar systems for defense/security, public safety, weather, RF imaging & sensing, source localization and other emerging applications. The workshop presents several state-of-art topics covering key aspects in radar.
The first talk addresses the utilization of IR-UWB radar sensors for the detection of trapped survivors under collapsed buildings in post-disaster scenarios. In the second talk, sophisticated backscatter transponder architectures operating at the millimeter wave range are presented for secondary radar-based localization. The third talk explores the field of multi-band radar as a further step in research into remote-sensing systems having enhanced capabilities. The fourth topic deals with noncontact detection of small mechanical vibrations and biological signals using Doppler radar sensors. Talk number five discusses findings from bleeding edge research on RFIC phased arrays having applications in automotive radars. Finally, the last talk discusses multi-dimensional signal processing techniques for apertures directed at radar and other steerable aperture applications.
A Dual-frequency IR-UWB Radar System for Detection of Trapped Survivors in Post-disaster Scenarios
Zhao Li, Hao Lv, Yang Zhang, Xijing Jing, and Jianqi Wang, Fourth Military Medical University, China
Millimeter Wave Backscatter Transponders for Secondary Radar-Based Localization
Wadim Stein, Christian Carlowitz, and Martin Vossiek, University of Erlangen-Nuremberg, Germany
Multi-band LFMCW Radar Approaches for Improved Detection Capabilities
Roberto Gómez-García and José-María Muñoz-Ferreras, University of Alcala, Spain
Accurate Small Movement Detection using Radar Sensor for Emerging Mechanical and Biomedical Applications
Changzan Lu and Changzhi Li, Texas Tech University, USA
Silicon Phase Arrays RFICs with a Large Number of Elements for Millimeter-Wave Automotive Radar Systems
Gabriel M. Rebeiz, University of California, San Diego, USA
Fundamental Theory of Digital/Analog Array Radar Receivers using 3-D Multi-Beam Planar-Resonant Filter Banks
Arjuna Madanayake, University of Akron, USA