Title :
A shaped beam antenna for data transmission
Author_Institution :
AK Electromagn. Inc., Coteau Station, Que., Canada
Abstract :
The development of a shaped-beam antenna for data transmission applications at X-band is described. The data link antenna coverage extends in all directions from nadir to the horizon as seen from the satellite. The X-band antenna base is required to be circularly polarized, and to peak sharply on a 51 degrees off-axis annulus to provide compensation for range and atmospheric attenuation. The antenna comprises a center-fed shaped reflector and a cavity-backed crossed-dipole feed. The computed radiation pattern of the antenna is shown, and the overall electrical performance of the antenna over 8.1 GHz to 8.3 GHz band is summarized. This antenna can be modified to produce better than 12 dBi peak gain at +or-370 degrees from the boresight.<>
Keywords :
antenna feeders; antenna radiation patterns; data communication systems; dipole antennas; microwave antennas; reflector antennas; 8.1 to 8.3 GHz; SHF; X-band antenna; antenna coverage; boresight; cavity-backed crossed-dipole feed; center-fed shaped reflector; circularly polarized; data link; data transmission; electrical performance; radiation pattern; range; satellite antenna; shaped beam antenna; Antenna feeds; Antenna radiation patterns; Attenuation; Data communication; Directional antennas; Directive antennas; Polarization; Reflector antennas; Satellite antennas; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115488
