Title :
Analysis of the surface-deflection effect on the performance of the haystack reflector antenna
Author :
Farahat, Nader ; Mittra, Raj ; Sanchez, Jesus
Author_Institution :
Polytech. Univ. of Puerto Rico, San Juan, Puerto Rico
Abstract :
The effect of surface deviations of a reflector, used as a radiotelescope, is analyzed in this paper via the aperture integration approach. Initially, a numerical integration is carried out for an aperture with a moderately large diameter, and the results are then scaled for the actual size, which is thousands of wavelengths in diameter in the frequency range of interest. The effects of gravity deformation are also accounted for by adjusting the phase distribution in the aperture.
Keywords :
aperture antennas; deformation; gravity; integration; millimetre wave antennas; radiotelescopes; reflector antennas; aperture integration approach; gravity deformation; haystack reflector antenna; numerical integration; performance; phase distribution; radiotelescope; surface deviations; surface-deflection effect; Aperture antennas; Deformable models; Frequency; Gravity; Optical surface waves; Performance analysis; Reflector antennas; Rough surfaces; Surface roughness; Thermal force;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552050
