Title :
Polarization stability of 4 arm-planar spiral structures
Author_Institution :
Tech. Univ. Berlin, West Germany
Abstract :
The dependence of the crosspolarization discrimination on the antenna shape and the feeding network is reviewed. The influence of the antenna shape is described by a new characteristic quantity: the polarization stability factor. This quantity is considered for four arm planar archimedean and logarithmic spiral antennas. With these structures high polarization stability can be obtained yielding a high degree of polarization purity with no need for an extremely optimized feeding network
Keywords :
antenna feeders; antenna radiation patterns; satellite antennas; antenna radiation patterns; antenna shape; characteristic quantity; feeding network; four arm planar spiral antenna; logarithmic spiral antennas; polarisation stability factor; satellite antennas;
Conference_Titel :
Antennas and Propagation, 1989. ICAP 89., Sixth International Conference on (Conf. Publ. No.301)
Conference_Location :
Coventry
