Title :
Determination of crosspolarisation by the use of focal-region fields
Author :
Poulton, G.T. ; Claydon, B.
Author_Institution :
Queen Mary College, Department of Electrical & Electronic Engineering, London, UK
Abstract :
Focal-region-field techniques can be used to determine the crosspolarisation performance of a front-fed paraboloidal antenna. Expressions are derived for the conditions that the aperture fields of a feed must satisfy to give low crosspolarisation. This extends the concept of a Huygens source to finite-aperture feeds.
Keywords :
antenna feeders; polarisation; reflector antennas; Huygens source; antenna feeders; crosspolarisation; focal region fields; polarisation; reflector antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19730418
