At large elevation angles away from boresight the performance of planar phased antenna arrays for circularly polarized, CP, signals suffers from significant gain reduction, worsening of the circular polarization purity, increased pointing error and unwanted dominantly specular lobe radiation. The mechanisms governing this performance deterioration and suggestions for possible rectification are for the first time elaborated in this paper. The points raised in this paper are important when CP retrodirective arrays are to be deployed in self-tracking satellite and terrestrial communication systems mounted on mobile platforms.
|Title of host publication||Antennas and Propagation (EuCAP), 2013 7th European Conference on|
|Place of Publication||Gothenburg|
|Number of pages||3|
|Publication status||Published - Apr 2013|