Design and evaluation of a shaped reflector and 4-port CP feed for dual band contoured beam satellite antenna applications

Author

Zhi Chao Tao ; Mahadevan, K. ; Ghosh, S. ; Bergmann, J. ; Sutherland, D. ; Tjonneland, K.

Author_Institution

SG Microwave Inc., Kitchener, Ont., Canada

Volume

3

fYear

1996

fDate

21-26 July 1996

Firstpage

1692

Abstract

Results of a comprehensive design and evaluation effort are presented for a shaped reflector and 4-port CP feed for a dual band contoured beam satellite antenna. The design meets stringent specifications on the gain slope within coverage contour and the isolation in the closely spaced neighbouring contours. Optimization of the reflector shape, the feed illumination function, the feed network to cater Tx/Rx CP operation have been addressed based on precision EM modelling to ascertain implementation of the design with least uncertainty. The feed system is undergoing fabrication and component level evaluations. The measured results on flight representative integrated hardware is presented and compared with predicted characteristics.

Keywords

antenna testing; microwave antennas; multiport networks; optimisation; reflector antenna feeds; reflector antennas; satellite antennas; 3.6 to 6.3 GHz; 4-port CP feed; EM modelling; Tx/Rx CP operation; closely spaced neighbouring contours; coverage contour; design; dual band contoured beam satellite antenna applications; evaluation; fabrication; feed illumination function; feed network; gain slope; isolation; optimization; reflector shape; shaped reflector; Antenna feeds; Design optimization; Dual band; Hardware; Lighting; Microwave antennas; Network synthesis; Polarization; Reflector antennas; Satellite antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1996. AP-S. Digest

Conference_Location

Baltimore, MD, USA

Print_ISBN

0-7803-3216-4

Type

conf

DOI

10.1109/APS.1996.549927

Filename

549927