DocumentCode :
2594390
Title :
A time domain analysis of ellipsoidal reflector antennas illuminated by transient-step feed radiation
Author :
Tuan, Shih-Chung ; Chou, Hsi-Tseng
Author_Institution :
Dept. of Commun. Eng, Oriental Inst. of Technol., Taipei, Taiwan
fYear :
2012
fDate :
21-24 May 2012
Firstpage :
601
Lastpage :
604
Abstract :
A time-domain (TD) analysis of ellipsoidal reflector antennas is presented to predict the transient scattered fields when it is illuminated by a cosine-tapered and transient-step feed radiation whose phase center is located at the nearby focus. A transient-step function of the feed´s radiation is considered because it will produce an impulsive response near the second focus of the reflector as interested in the applications of impulse-radiating antennas. This TD solution is in a closed form and remains valid both near and far from the reflector, and can be used via the convolution theorem to efficiently obtain the early time transient fields generated by the same ellipsoidal reflector antenna when it is illuminated by a realistic finite-energy pulse which emanates as a spherical wave from the focus. Numerical results are presented for the transient fields both near and far from the reflector.
Keywords :
antenna feeds; convolution; electromagnetic wave scattering; reflector antennas; time-domain analysis; transient response; TD solution; convolution theorem; cosine-tapered feed radiation; ellipsoidal reflector antennas; finite-energy pulse; impulse-radiating antennas; impulsive response; phase center; spherical wave; time transient fields generation; time-domain analysis; transient scattered fields; transient-step feed radiation; transient-step function; Antenna feeds; Antenna measurements; Reflector antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetic Compatibility (APEMC), 2012 Asia-Pacific Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-4577-1557-0
Electronic_ISBN :
978-1-4577-1558-7
Type :
conf
DOI :
10.1109/APEMC.2012.6237904
Filename :
6237904
Link To Document :
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