NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
A Novel Method for Determining the Lower Bound of Antenna Efficiency
Published
Author(s)
Jason B. Coder, John M. Ladbury, Mark Golkowski
Abstract
Determining the absolute antenna efficiency has been a difficult task since the inception of the antenna itself. While there are methods that can measure an antennas efficiency, most are complicated and prone to high uncertainties. A new method is presented for determining the lower bound of absolute antenna efficiency using a reverberation chamber. This method is able to characterize both the transmitting and receiving efficiency of an antenna. The proposed method is first validated using numerical simulations. These simulations can provide insight into the behavior of the equations and necessary assumptions. Then, the method for transmitting efficiency is validated using measured data from two different types of antennas: a wide band dual-ridged horn, and a narrow-band meta-material inspired antenna. Following the measurement data, possible areas for improvement of the method and its optimization are discussed.
Proceedings Title
Proceedings of the IEEE International Symposium on Electromagnetic Compatibility.
Coder, J.
, Ladbury, J.
and Golkowski, M.
(2011),
A Novel Method for Determining the Lower Bound of Antenna Efficiency, Proceedings of the IEEE International Symposium on Electromagnetic Compatibility., Long Beach, CA, [online], https://doi.org/10.1109/ISEMC.2011.6038293
(Accessed October 20, 2025)