High-Performance Microwave Circuits

High-Performance Microwave Circuits

Prof. Zoya Popovic*


Prof. Zoya Popovic
University of Colorado, Boulder, U.S.A

Date:           Wednesday November 23, 2016
Time:          3:30 PM – 4.30 PM
Location:   EIT 3142
Invited by: Professor R. Mansour


 This talk will present a brief overview of the activities in the microwave group at theUniversity of Colorado, Boulder, in areas including broadband microwave and millimeter-wavemicro-coaxial circuits, antenna arrays, wireless powering for batteryless sensors and medicalapplications of microwaves such as microwave core-body thermometry and travelling-waveMRI. A few specific projects related to high-efficiency RF power amplifiers (PAs) and wirelesspowering will be presented in more detail. Design and implementation of PAs withefficiencies greater than 65% and power levels from 3kW to 12W at frequencies from450MHz to 10GHz, respectively, will be overviewed. The amplifiers are components of radarand communication systems for various signal types, from constant envelope narrowbandpulsed waveforms for wind profiling UHF radar, to high peak-to-average ratio (PAR) high-bandwidth communication and radar signals in S (~2GHz) and X (`10GHz) bands. Related towireless powering, the talk will detail design of receivers for far-field powering at very lowincident power densities (<1uW/cm2), including the rectennas and power managementcircuits. Additionally, preliminary results in near-field powering at kW levels for vehicles inmotion will be introduced..



Zoya Popovic is a Distinguished Professor and the Hudson Moore Jr. EndowedChair of Electrical Engineering at the University of Colorado. She obtained herDipl.Ing. degree at the University of Belgrade, Serbia, and her Ph.D. at Caltech.In 2001/03 and 2014, she was a Visiting Professor with the TechnicalUniversity of Munich, Germany and ISAE in Toulouse, France, respectively. Shehas graduated 52 PhDs and currently advises 15 doctoral students in variousareas of microwave engineering. She is a Fellow of the IEEE and the recipientof two IEEE MTT Microwave Prizes for best journal papers, the White House NSF PresidentialFaculty Fellow award, the URSI Issac Koga Gold Medal, the ASEE/HP Terman Medal and theGerman Humboldt Research Award. She was named IEEE MTT Distinguished Educator in 2013and the University of Colorado Distinguished Research Lecturer in 2015. She has a husbandphysicist and three daughters who can all solder. 

* Photo source: University of Colorado, Boulder, U.S.A.