Analysis and Design of a Novel Hat Feed with Narrow Beamwidth for the Fresnel Zone Plate Antenna
Conventional hat feeds have the best performance in very deep reflector antennas because of their wide beamwidth. They also have the advantage of being self-supported. The disadvantage of this type of feed is its wide beamwidth. To solve this problem, a new hat feed is proposed that can be used as prime-focus feed for Fresnel zone plate antennas. The novel design, called parabolic hat feed is achieved by appropriate shaping of the hat feed profile. (c) 2008 Wiley Periodicals, Inc. Int J RF and Microwave CAE 19: 416-422, 2009.
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