Title :
Crosspolarisation due to radial field components in reflector antennas
Author_Institution :
Marconi Research Centre, GEC Research Laboratories, Chelmsford, UK
Abstract :
The letter stresses the importance of including the radial component of the transmit field of the feed horn when analysing reflector antennas. Omission of this component leads to errors in the prediction of crosspolar patterns similar in magnitude to those produced by diffraction effects within a dual reflector antenna.
Keywords :
antenna radiation patterns; antenna theory; current distribution; electromagnetic wave polarisation; reflector antennas; EM polarisation; conical horn; crosspolar patterns; feed horn; included currents; radial field components; reflector antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850435
