Dallas Chapter of the IEEE Microwave Theory and Techniques Society 

March 2008 Meeting

Title: Memory Effects and Modeling

Speaker: Dr. Stephen Maas, Chief Scientist, AWR, Inc.

Date:    Tuesday, March 25, 2008

               Dinner 6:30 p.m. / Program 7:00 pm

Charge: $5 (includes admission and buffet). No charge for Student and Life Members

RSVP: Please RSVP by noon, March 21st, so we can submit a headcount to the restaurant

*** PLEASE NOTE MEETING LOCATION ***

Location: Holiday Inn Select

1655 N Central Expy
Richardson , TX 75080
(972) 644-7728

Abstract:

So-called memory effects in power amplifiers seem to cause so many problems these days that they eventually will be blamed even for warts, hemorrhoids, and your teenage daughter’s elopement with a rock musician. Therefore, before all this really happens, it seems worthwhile to clarify what memory effects really are, what they do, and how they can be simulated. Many aspects of memory modeling are currently subjects of intense research, but others are sufficiently well understood and are sufficiently mature for practical application. We will discuss the most important aspects of power-amplifier memory and describe some of the approaches to modeling it. In particular, we look at Volterra methods, as they are currently an important tool in modeling such phenomena.

Speaker Bio:

Dr. Stephen Maas received BSEE and MSEE degrees in Electrical Engineering from the University of Pennsylvania in 1971 and 1972, respectively, and a Ph. D. in Electrical Engineering from UCLA in 1984. Since then, he has been involved in research, design, and development of low-noise and nonlinear microwave circuits and systems at the National Radio Astronomy Observatory (where he designed the receivers for the Very Large Array), Hughes Aircraft Co., TRW, the Aerospace Corp., and the UCLA Department of Electrical Engineering. Subsequently he worked as an engineering consultant and founded Nonlinear Technologies, Inc., a consulting company, in 1993. He is currently Chief Scientist of AWR, Inc.

Dr. Maas is the author of Microwave Mixers (Artech House, 1986 and 1992), Nonlinear Microwave Circuits (Artech House, 1988; second edition 2003), The RF and Microwave Circuit Design Cookbook (Artech House, 1998), and Noise in Linear and Nonlinear Circuits (Artech House, 2005). From 1990 until 1992 he was the editor of the IEEE Transactions on Microwave Theory and Techniques and from 1990-93 was an Adcom member and Publications Chairman of the IEEE MTT Society. He received the Microwave Prize in 1989 for his work on distortion in diode mixers and the MTT Application Award in 2002. He is a Fellow of the IEEE.

Sponsorship:

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