Title :
A line feed for a spherical reflector
Author_Institution :
National Research Council of Canada, Ottawa, Ontario, Canada
fDate :
9/1/1967 12:00:00 AM
Abstract :
A line feed for a spherical reflector is considered on the basis of a plane-wave spectrum of radiation angles. It is shown that a feed excited by circumferential slots results in a gain deterioration of at least 3 dB. The correct excitation of the feed is indicated. Expressions for field components in the focal region are obtained.
Keywords :
Reflector antenna feeds; Reflector antennas, spherical; Spherical reflector antennas; Antenna theory; Antennas and propagation; Current distribution; Feeds; Geometrical optics; Integral equations; Optical polarization; RNA; Spirals; Wire;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1967.1139014
