Title :
Feed upgrade for autotracking capability
Author_Institution :
Datron Syst. Inc., Simi Valley, CA, USA
Abstract :
The author summarizes the feed upgrade performed on the 10-m antenna system originally built by Datron Systems in the mid-1970s. The upgrade added the autotracking capability to the existing feed. The upgrade maintained the simultaneous transmit and receive capability of the feed used in an S-band satellite ground station antenna. The key upgrade component of the feed is the tracking mode coupler, which generates the circular TE/sub 21/ waveguide mode that radiates a difference pattern to provide autotracking. The system performance of the antenna was excellent. The predicted and average measured figure of merits (G/T) were 21.3 kB/K and 21.9 dB/K at an elevation angle of 5 degrees , respectively. The active crosstalk correction scheme made for excellent system tracking performance.<>
Keywords :
antenna feeders; satellite antennas; satellite ground stations; tracking systems; S-band satellite ground station antenna; active crosstalk correction scheme; autotracking capability; difference pattern; feed upgrade; figure of merits; receive capability; tracking mode coupler; transmit capability; Antenna feeds; Antenna measurements; Crosstalk; Receiving antennas; Satellite antennas; Satellite ground stations; System performance; Tellurium; Transmitting antennas; Waveguide components;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134982
