Title :
Reflector antenna radiation pattern analysis by equivalent edge currents
Author :
James, Graeme L. ; Kerdemelidis, Vassilios
Author_Institution :
University of Canterbury, Christchurch, New Zealand
fDate :
1/1/1973 12:00:00 AM
Abstract :
Equivalent edge currents, derived from the edge diffraction theory for a half-plane, are used to obtain the radiation patterns of a parabeloidal reflector antenna when illuminated by a source at the focus. Cylindrical wave diffraction coefficients are used. The method avoids infinities at caustics and shadow boundaries thus giving solutions which are finite everywhere. A slope-wave equivalent current correction term is applied when the illumination is tapered towards the edge of the reflector. Comparisons are given with the physical optics approach and experimental results.
Keywords :
Geometrical diffraction theory; Reflector antennas; Antenna radiation patterns; Antenna theory; Aperture antennas; Current distribution; H infinity control; Optical diffraction; Optical scattering; Pattern analysis; Physical optics; Reflector antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1973.1140409