Title :
Scattering measurements for I-VII TC&R antennas on a spacecraft mock-up
Author :
Lee, E.-A. ; Schennum, G. ; Hwang, Y.-M. ; Lee, B.S.
Author_Institution :
Ford Aerospace Corp., Palo Alto, CA, USA
Abstract :
The optimal locations of the I-VII TC&R broadbeam antennas were determined based on scale mock-up test results. The broadbeam antennas at these locations will not only provide the best RF performance but also satisfy other spacecraft configuration constraints. It is shown that the I-VII H/Z reflectors create pattern blockage and a focused high X-pol on the telemetry antenna patterns. The computer predictions on these effects were verified by scale mock-up measurements.<>
Keywords :
antenna radiation patterns; antenna reflectors; directive antennas; satellite antennas; telemetering equipment; waveguide antennas; I-VII H/Z reflectors; I-VII TC&R antennas; RF performance; command broadbeam antennas; optimal locations; pattern blockage; scattering measurements; spacecraft mock-up; telemetry antenna patterns; telemetry broadbeam antennas; telemetry directional antennas; waveguide horns; Antenna accessories; Antenna measurements; Directive antennas; Feeds; Reflector antennas; Satellite antennas; Scattering; Space vehicles; Telemetry; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175182
