Title :
Scattering from primary feeds with corrugated soft surfaces-effect on the secondary radiation pattern
Author_Institution :
Div. of Network Theory, Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
It is shown that for small and medium-sized circular symmetric reflector antennas it is very important to include the effect of the multiple scattering between the feed and the reflector when determining the secondary pattern. In particular, when corrugated soft surfaces are used to improve the polarization characteristics of primary feeds, the corrugations will cause very high cross-polarization due to multiple scattering. This is very well predicted by the multiple scattering approach.<>
Keywords :
antenna feeders; antenna radiation patterns; electromagnetic wave polarisation; electromagnetic wave scattering; reflector antennas; circular symmetric reflector antennas; corrugated soft surfaces; cross-polarization; multiple scattering; polarization characteristics; primary feeds; secondary radiation pattern; Antenna feeds; Antenna measurements; Antenna radiation patterns; Corrugated surfaces; Inductors; Optical scattering; Optical surface waves; Reflection; Reflector antennas; Surface treatment;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.174804
