Title :
Design of an inexpensive multi-mode satellite tracking feed
Author_Institution :
Bell Aerosp. Textron, Buffalo, NY, USA
Abstract :
A satellite tracking feed system is described in which only the TE/sub 11/ and TM/sub 01/ modes of the circularly polarized signal are used. The tracking feed was designed to operate between 20.2 and 21.2 GHz. The essential component of the feed consists of a conventional smooth circular waveguide, whose diameter is sufficiently large enough to support both modes. It has a rectangular port orthogonal to the circular waveguide, and a resonant ring, acting as a mode filter which separates the modes. The TM/sub 01/ mode is then coupled from the circular waveguide by a coaxial probe, which is matched to a 50 Omega coaxial connector using a tapered transition. The feed is designed to be used with either a corrugated horn or a dual-mode horn.<>
Keywords :
antenna feeders; directive antennas; satellite antennas; tracking; 20.2 to 21.2 GHz; circularly polarized signal; coaxial probe; conventional smooth circular waveguide; corrugated horn; dual-mode horn; inexpensive multi-mode satellite tracking feed; rectangular port; resonant ring; tapered transition; Coaxial components; Feeds; Filters; Polarization; Rectangular waveguides; Resonance; Satellites; Tellurium; Waveguide components; Waveguide transitions;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94067
