Title :
Design of terrestrial sector-beam antennas using advanced spacecraft contoured beam synthesis software
Author_Institution :
TICRA, Copenhagen, Denmark
Abstract :
The design of a sector-beam antenna is described. The azimuth and elevation patterns are subject to stringent requirements on gain and isolation. A PO based synthesis method is applied to generate a shaped reflector surface that radiates the desired pattern when illuminated by a corrugated horn. A centre-fed as well as an offset design is presented. The designs fulfil the requirements, except for side lobes caused by the feed spillover effects. This cannot easily be incorporated into the synthesis, but may be dealt with by extending the rim of the reflector.
Keywords :
antenna radiation patterns; electrical engineering computing; horn antennas; offset reflector antennas; physical optics; shaped beam antennas; PO based synthesis method; antenna pattern; azimuth patterns; centre-fed design; corrugated horn; elevation patterns; feed spillover effects; gain; isolation; offset design; reflector antennas; shaped reflector surface; side lobes; spacecraft contoured beam synthesis software; terrestrial sector-beam antennas design; Apertures; Azimuth; Corrugated surfaces; Design optimization; Directional antennas; Feeds; Optical design; Physical optics; Reflector antennas; Space vehicles;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959721
