Title :
Effect of surface distortions on the crosspolarisation performance of paraboloidal reflectors
Author :
Thomas, B. MACA. ; Rayner, P.T.
Author_Institution :
CSIRO, Division of Radiophysics, Sydney, Australia
Abstract :
The effects on the crosspolarisation and the radiation patterns of circular paraboloidal reflectors produced by (a) reflector distortions which are periodic in the circumferential direction and (b) a lateral offset of the feed have been evaluated for a wide range of reflector and feed parameters. It is shown that the use of a balanced hybrid-mode feed minimises crosspolarisation introduced by reflector distortions.
Keywords :
antenna feeders; antenna radiation patterns; antenna reflectors; polarisation; crosspolarisation performance; lateral offset; paraboloidal reflectors; radiation patterns; surface distortions;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770346
