Title :
Beam-scanning primary feed for parabolic reflectors
Author :
Rudge, A.W. ; Withers, M.J.
Author_Institution :
IIT Research Institute, Chicago, USA
Abstract :
A system is described which achieves wide-angle beam scanning from a parabolic reflector antenna by movement of an adaptive primary-feed system about a defined locus. The feed system performs a sampled spatial Fourier transformation of the focal-plane field in order to obtain a uniform power distribution prior to phase compensation and summation. Scanning of ±15 beamwidths with less than 0.5dB loss in gain and negligible beam distortion has been demonstrated experimentally.
Keywords :
antenna feeders; antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19690026