Title :
Prediction of dual-shaped-reflector antenna crosspolarisation
Author_Institution :
Queen Mary College, Department of Electrical & Electronic Engineering, London, UK
Abstract :
An efficient computer program for the analysis of dual-shaped-reflector antennas is described. This is used to predict the crosspolarisation of a typical earth station antenna. Employing a feed with intrinsic crosspolarisation, it is shown that the crosspolar performance of the antenna may be reflector depolarisation limited. The effect of subreflector beam steering on the crosspolar response is also discussed.
Keywords :
antenna feeders; communications computing; polarisation; reflector antennas; Cassegrain antennas; Earth station antenna; antenna crosspolarisation; antenna feeders; crosspolar performance; dual shaped reflector antennas; reflector antennas; reflector depolarisation; subreflector beam steering;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19780066
