Title :
Gaussian beam and physical optics iteration technique for wideband beam waveguide feed design
Author :
Veruttipong, W. ; Chen, J.C. ; Bathker, D.A.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A novel approach is demonstrated which involves iterating Gaussian beam and beam waveguide (BWG) parameters to obtain a wideband BWG feed. The result is further improved by making a comparison with the physical-optics result and repeating the iteration. The basic goal was to design a BWG feed system with good performance from 2 to 32 GHz, utilizing mirror sizes of 20 lambda at the low frequency. The BWG antenna performance (e.g. gain, efficiency, noise temperature) at S, X, and Ka-bands is presented. It is noted that higher-gain horns are needed for higher frequencies.<>
Keywords :
antenna feeders; iterative methods; microwave antennas; physical optics; reflector antennas; waveguides; 2 to 32 GHz; EHF; Gaussian beam; Ka-band; S-band; SHF; VHF; X-band; antenna performance; efficiency; gain; iteration technique; noise; physical optics; reflector antennas; temperature; wideband beam waveguide feed design; Feeds; Frequency; Low-frequency noise; Mirrors; Optical beams; Optical waveguides; Performance gain; Physical optics; Temperature; Wideband;
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.1991.175015
