Title :
Reflector antenna distortion compensation by array feeds: an experimental verification
Author :
Rahmat-Samii, Yahya
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA
fDate :
9/1/1988 12:00:00 AM
Abstract :
Reflector antennas are subject to surface distortions which may result from thermal or gravitational effects. Surface distortions degrade antenna performance by reducing gain and introducing high sidelobe levels. In the letter, results of an experimental study have been presented to demonstrate how effectively a properly excited array feed in the focal plane of the reflector antenna can compensate for the undesirable effects of slowly varying surface distortions. The application of the array compensation concept could prove to be very useful for future large space or ground antennas
Keywords :
antenna feeders; compensation; reflector antennas; satellite links; array compensation concept; distortion compensation by array feeds; experimental verification; gravitational effects; ground antennas; large antennas; reflector antenna; sidelobe levels; slowly varying surface distortions; space antennas; surface distortions; thermal effects;
Journal_Title :
Electronics Letters
