Title :
The effect of quasi-optics errors on reflector antenna performance
Author :
Foster, Patricia R. ; Wylde, Richard J.
Author_Institution :
Microwave & Antenna Syst., Great Malvern, UK
fDate :
6/1/1992 12:00:00 AM
Abstract :
The use of quasi-optics feed systems with a reflector antenna allows multiple-frequency operation over a very wide bandwidth for remote sensing of the Earth and atmosphere from space. The errors in such a multichannel quasi-optical feed system must be controlled in order to limit the degradation of system performance. These errors can be attributed to the presence of higher-order Gaussian modes, but the errors can be minimized if the quasi-optical system can be made independent of frequency. If volume limitations preclude a frequency-independent design, the amplitude of the higher-order Gaussian modes must be controlled
Keywords :
reflector antennas; remote sensing; frequency-independent design; higher-order Gaussian modes; multiple-frequency operation; quasi-optics errors; reflector antenna performance; remote sensing; system performance; volume limitations; Antenna feeds; Atmosphere; Bandwidth; Control systems; Degradation; Earth; Error correction; Frequency; Reflector antennas; Remote sensing;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
