IEEE Albuquerque Section

IEEE

Albuquerque IEEE Joint Chapter talk: A Power Wave Theory of Antennas by Dr. Everett Farr

The Albuquerque IEEE Joint Chapter Presents

TOPIC OF TALK:

A Power Wave Theory of Antennas

PRESENTED BY:

Dr. Everett Farr, Farr Fields, LC, Albuquerque, NM

TIME:

7:30 pm Wednesday, April 9, 2014, social Hour begins at 5:45 pm, dinner begins at 6:30 pm

LOCATION:

The Canyon Club (was Four Hills Country Club), 911 Four Hills road SE, Albuquerque

DINNER MENU:               

Green Chile Stew, Maple Glazed Salmon, Rice Pilaf, Asparagus, Dinner Rolls /Butter, New York cheese Cake, Coffee, Iced Tea and Water

COST:

There is no charge and no reservation required to attend just the talk.

$25 per person for dinner (full-time student members of IEEE, $15)—reservations required

RSVP by email to  harrisonmgabq@comcast.net  or phone Mike Harrison at (505) 239-2663.

PLEASE NOTE:  This dinner meeting will be held at The Canyon Club which requires a pretty accurate number of meals to prepare by noon on Monday before the Wednesday meeting.  Please try to make your reservation by Monday, April 7.  The Canyon Club is often flexible so it is worth trying to make a late reservation.

PRESENTATION SUMMARY:  In this talk, we continue our  exploration of antenna characterization in the time domain. The issue is how to fully describe antenna performance in a manner that is equally valid in both transmission and reception, and in both the frequency and time domains. Power wave theory realizes this goal with equations that are simpler than any earlier formulation.

When we last spoke in this venue in 2011, we developed a theory that worked well for resistive loads, but lacked complete generality. For example, that theory could not be applied to antennas with waveguide feeds. Power wave theory extends the earlier work to all linear reciprocal antennas, including antenna arrays and antennas with multi-mode waveguide feeds.

A new IEEE Standard Definitions of Antenna Terms has recently been approved that defines about 200 terms related to frequency domain antenna performance, and none related to time domain performance. This might seem surprising in view of the high level of interest in ultra-wideband antennas. Power wave theory provides a theoretical framework for defining the missing time domain terms, and we propose about thirty new terms to be considered for standardization.

ABOUT THE SPEAKER:    Everett Farr received the Ph.D. in electrical engineering in 1985 from the University of Illinois at Urbana-Champaign. In 1991 he formed Farr Research, which later became Farr Fields, where he has investigated a variety of ultra-wideband antennas. These included many variations of Impulse Radiating Antennas (IRAs), consisting of a parabolic reflector and a wideband feed. He also developed a time domain antenna measurement system. Many of these antennas and systems are available as commercial products.

Dr. Farr is Chairman of USNC-URSI Commission E, and Chairman of the IEEE AP/MTT/EMC/NPSS joint chapter in Albuquerque. He is a co-recipient of the 2006 IEEE John Kraus Award, with citation reading, “For the development of novel and innovative ultra-wideband antenna concepts that have enabled a new area of electromagnetics.” He is also a Summa Foundation EMP Fellow. He received the Best Applied Paper Award at the 1990 Nuclear Electromagnetics Conference, for his work on the Balanced Transmission-line Wave sensor; and again at the 2002 AMEREM Conference, for his work on IRAs.

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