Title :
A low-cost Ka-band Cassegrain polarimetric tracking antenna
Author :
Holzman, E.L. ; Eisenhart, R.L. ; Robertson, R.S. ; Kurtz, L.A. ; Kihm, R.T.
Author_Institution :
Hughes Aircraft Co., Canoga Park, CA, USA
Abstract :
A low-cost Ka-band Cassegrain tracking antenna based on a novel feed concept has been designed and built. The antenna will be used in a monopulse application and can transmit a circular or linear polarized sum pattern and receive the sum vertical, horizontal, and difference signals on receive. The feed consists of four sections: a rectangular waveguide, folded hybrid-tee; an orthogonal, slot-coupled, rectangular-to-circular waveguide junction; a circular waveguide section; and a conical horn. A prototype antenna was built and characterized in an anechoic chamber. The gains of the three ports are compared with the results of a physical optics based analysis.<>
Keywords :
antenna feeders; horn antennas; microwave antennas; polarimetry; reflector antennas; tracking systems; 35 GHz; EHF; circular waveguide section; conical horn; design; feed; gain; low-cost Ka-band Cassegrain polarimetric tracking antenna; rectangular waveguide; slot-coupled rectangular-to-circular waveguide junction; Anechoic chambers; Antenna feeds; Hybrid junctions; Optical waveguides; Physical optics; Polarization; Prototypes; Receiving antennas; Rectangular waveguides; Waveguide junctions;
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.1992.222017
