Title :
Polarisation discrimination in shaped beam applications
Author :
Brown, R.C. ; Clarricoats, P.J.B. ; Zhou, H.
Author_Institution :
Queen Mary College, London, UK
Abstract :
In antenna test ranges the crosspolarisation of a shaped reflector antenna is measured utilising Ludwig´s third definition. However, in practice crosspolarisation discrimination (XPD) does not depend on any arbitrary definition. The letter calculates the variation of XPD in a shaped beam and finds considerable difference between the XPD and that calculated using Ludwig´s third definition.
Keywords :
antenna theory; electromagnetic wave polarisation; reflector antennas; satellite links; Ludwig´s third definition; XPD; antenna test ranges; crosspolarisation discrimination; satellite links; shaped beam applications; shaped reflector antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870168
