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DESIGN AND ANALYSIS SOLUTIONS FOR INTEGRATED RF SYSTEMS FORUM: Simulation and modeling of MMIC PAs for Communication Systems


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12/15/21 1:00 pm to 12/15/21 2:00 pm EST

Event Description

Design and Analysis Solutions for Integrated RF Systems Forum

Title: Simulation and modeling of MMIC PAs for Communication Systems

Date: December 15, 2021

Time: 10:00am PT / 1:00pm ET

Presented by: Prof. Zoya Popovich, University of Colorado, Boulder and David Farkas, NxBeam

The first talk will overview techniques for efficient amplification with some forms of linearization, including dual-band and broadband PA designs. Specifically, supply modulation of broadband signals amplified by different gallium nitride (GaN) PAs, including a 2-4GHz single-ended hybrid PA, an X-band MMIC PA, and a K-band MMIC PA, will be presented. An analog technique for improving PA linearity for high instantaneous bandwidth signals using gate bias modulation will be discussed, as well as a new type of diplexed broadband PA design. The second talk in this session will discuss the challenges related to partitioning PA MMIC designs for accurate modeling with EM analysis and will offer approaches to overcome these challenges using Cadence’s Microwave Office® Design Environment platform.

Presenter Bios:

Zoya B. Popovic received the Dipl. Ing. degree from the University of Belgrade, Serbia, Yugoslavia, in 1985, and the Ph.D. degree from the California Institute of Technology, Pasadena, in 1990. Since 1990, she has been with the University of Colorado at Boulder, where she is currently a Full Professor. She has developed five undergraduate and graduate electromagnetics and microwave laboratory courses and coauthored (with her father) the textbook Introductory Electromagnetics (Upper Saddle River, NJ: Prentice-Hall, 2000) for a junior-level core course for electrical and computer engineering students. Her research interests include microwave and millimeter-wave quasi-optical techniques, high-efficiency microwave circuits, smart and multibeam antenna arrays, intelligent RF front ends, RF optical techniques, batteryless sensors, and broad-band antenna arrays for radio astronomy. Dr. Popovic´ was the recipient of the 1993 Microwave Prize presented by the IEEE Microwave Theory and Techniques Society (IEEE MTT-S) for the best journal paper. She was the recipient of the 1993 National Science Foundation (NSF) Presidential Faculty Fellow Award. She was the recipient of the 1996 URSI Isaac Koga 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 also the recipient of the 2001 Hewlett-Packard (HP)/American Society for Engineering Education (ASEE) Terman Award for combined teaching and research excellence.

David Farkas has over 25 years of experience in the wireless electronics industry in both the commercial and defense areas. Prior to co-founding Nxbeam Inc., David founded Active Wave Technology (AWT) which specializes in the development of custom millimeter wave circuit products focusing on GaN, InP, and GaAs technologies. Prior to AWT, David was Assistant Department Manager at Northrop Grumman Aerospace Systems (NGAS) responsible for developing high frequency integrated circuit products. David also held the position of Section Head within NGAS’s semiconductor foundry responsible for developing High Electron Mobility Transistor (HEMT) technology. Prior to NGAS, David was a Senior Design Engineer at Multilink Technology Corporation and Design Engineer at Hughes Space and Communications where he developed MMICs for optical and wireless communication systems. David earned his BSEE and MSEE degrees from The Ohio State University with emphasis on electromagnetics while working as a graduate research associate at the Electroscience Laboratory. David has over 15 technical publications.

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