Abstract
ABSTRACTThe characteristics of a parabolic cylindrical reflector antenna are discussed theoretically. It is assumed that the reflector surface has perfect conductivity and is fed by a line source which is placed at the focal line of the reflector. Theoretical expressions are given for the gain and aperture efficiency of the antenna in terms of the physical dimensions of the reflector and the feed. It is found that for a given pattern of the primary feed there exists an optimum size of the reflector so that the overall gain of the antenna is maximum. The gain of the antenna is discussed for different primary patterns. The effects of phase error and of the primary back lobe on the gain of the antenna are also discussed. The theoretical results given should be useful for the actual design of parabolic cylindrical reflector antennas.
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