Title :
INTELSAT VI antenna system
Author_Institution :
Hughes Aircraft Co., Fullerton, CA, USA
Abstract :
The INTELSAT VI satellite makes use of 11 different antennas, operating at both C-band and Ku-band. The C-band coverages are: (1) four spatially isolated zone coverages which are reconfigurable for each of three possible ocean region orbit positions (Atlantic, Indian, Pacific); (2) spatially isolated east and west hemispheric coverage; and (3) global coverage. The C-band beams use circular polarization with common coverage regions having beams with opposite polarization sense. Two reflectors are used, with each being illuminated by approximately 145 feed horns. The Ku-band coverage consists of two independent elliptical spot beams. Each beam is generated by a single horn illuminating a shaped reflector. Both beams are mechanically steerable along the earth´s disk and are spatially isolated. The feed networks consist of TEM line squareax (square coaxial line) technology and dual-mode circular Potter horns.<>
Keywords :
reflector antennas; satellite antennas; C-band; INTELSAT VI satellite; Ku-band; TEM line squareax technology; circular polarization; dual-mode circular Potter horns; elliptical spot beams; feed horns; global coverage; hemispheric coverage; reflector antennas; satellite antennas; shaped reflector; spatially isolated zone coverages; square coaxial line; Aircraft; Artificial satellites; Feeds; Isolation technology; NASA; Oceans; Polarization; Satellite antennas; Space technology; Space vehicles;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134728
