Everett of Farr Fields, LC

Describing antenna performance in the time domain has always been challenging, due to a lack of standardized definitions. In the frequency domain, gain and realized gain are commonly used, however, no analogous terms exist in the time domain. Without a common standard, the development of ultrawideband antennas is impeded. To address this, the antenna equation has recently been developed. However, for it to become widely adopted, more examples of its usefulness are needed. In this paper, ten fundamental antenna theory puzzles are solved using the antenna equation. Chief among these is how to combine gain with a meaningful phase, and what is the time domain analog of gain. It is shown how to relate antenna impulse response to realized gain. It is also shown how to use signal flow graphs to simplify and solve complicated antenna problems. With these examples, we should finally be ready to adopt as standards new terms that emerge from the antenna equation.

Biography:

Everett G. Farr was born in Cleveland, Ohio in 1959, and he earned a Ph.D. in electrical engineering from the University of Illinois at Urbana-Champaign in 1985. In 1991 he formed Farr Research, which later became Farr Fields, located in Albuquerque, NM. There, he investigated a variety of ultrawideband antennas, including 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 currently serves as editor of the Summa Foundation Notes Series. He has served as Chairman of USNC-URSI Commission E, and as Chairman of the IEEE AP / EMC / MTT / NPSS Joint Chapter in Albuquerque. He is a co-recipient of the 2006 IEEE John Kraus Antenna 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 Impulse Radiating Antennas. He also received the Best Basic Paper award at the 2014 AMEREM Conference for his work on the power wave theory of antennas.

Email:

Address:1801 Count Fleet St SE, , Albuquerque, New Mexico, United States, 87123