Title :
TT&C antenna candidate for spin and body stabilized spacecrafts
Author_Institution :
TRW Electronics System Group, Redondo Beach, CA, USA
Abstract :
The author presents a number of antenna designs for achieving the most desirable cardioid and hemispherical pattern shape, and the approaches given are considered to be the best antenna candidates for spacecraft applications in terms of performance and producibility. In particular, quadrifilar helix, conical log-spiral, and open-ended waveguide with parasitic element antennas are shown to be good candidates for providing cardioid or hemispherical coverages. Good spherical coverage may be obtained by employing one or a combination of broad and narrow coverage antennas. Descriptions of spherical coverage approaches are presented.<>
Keywords :
antenna radiation patterns; microwave antennas; space vehicles; telemetering equipment; tracking systems; waveguide antennas; TT&C antenna; antenna designs; body-stabilised spacecraft; cardioid pattern shape; conical log-spiral antennas; hemispherical pattern shape; open-ended waveguide with parasitic element antennas; performance; quadrifilar helix antenna; spherical coverage; spin-stabilised spacecraft; Antenna measurements; Antenna radiation patterns; Arm; Cardiology; Directive antennas; Frequency; Helical antennas; Impedance matching; Space vehicles; Spirals;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.222003
