Title :
A C/X/Ku-band dual polarized Cassegrain antenna system
Author :
Beadle, M. ; Chugh, R. ; Geen, D. ; Patel, S. ; Schwerdtferger, R. ; Casey, S.
Author_Institution :
Antenna Products Div., Vertex Commun. Corp., Kilgore, TX, USA
Abstract :
There is an increasing demand for multiple frequency band capability in satellite Earth station antenna systems. This paper describes an 18.3 m shaped Cassegrain antenna with a single aperture, tri-band, six-port receive-only, feed system. The frequencies of operation are 3.4-4.2 GHz, 7.25-7.75 GHz, and 10.9-12.75 GHz. The C- and X-band feed ports offer dual circular polarization, and the Ku-band ports offer dual linear polarization with an internal polarization vector angle adjustment mechanism. Frequency and polarization multiplexing is performed by a novel OMJ structure.
Keywords :
antenna testing; electromagnetic wave propagation; microwave antennas; multifrequency antennas; multiplexing; reflector antenna feeds; reflector antennas; 10.9 to 12.75 GHz; 3.4 to 4.2 GHz; 7.2 to 7.75 GHz; 9.15 cm; C-band; Ku-band; OMJ structure; SHF; X-band; dual circular polarization; dual linear polarization; dual polarized Cassegrain antenna system; frequency multiplexing; internal polarization vector angle adjustment; multiple frequency band; polarization multiplexing; satellite Earth station antenna systems; single aperture feed system; six-port receive-only feed system; tri-band feed system; Arm; Band pass filters; Feeds; Frequency; Low pass filters; Multifrequency antennas; Phase shifters; Polarization; Satellite ground stations; Waveguide junctions;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789232
