Title :
Efficiency simulations on a Vivaldi antenna in a Wheeler Cap
Author :
Johnston, Ronald H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB, Canada
Abstract :
The "Wheeler Cap" can be used to determine the radiation efficiency of electrically small antennas very accurately. The purpose of this paper is to simulate the improved Wheeler Cap measurement method with a Vivaldi antenna. The WIPL-D simulation tool is used to simulate the antenna in free space and in the Cap. This process can be used to test the accuracy of the improved Wheeler Cap method on an electrically large antenna.
Keywords :
antenna radiation patterns; antenna testing; Vivaldi antenna; WIPL-D simulation tool; Wheeler Cap measurement method; antenna radiation; antenna testing; electrically large antenna; electrically small antenna; free space simulation; Antenna measurements; Circuit testing; Computational modeling; Computer simulation; Cutoff frequency; Frequency measurement; Loss measurement; Reflector antennas; Scattering parameters; Vivaldi antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171902
