2010•European Conference on Antennas and PropagationRequires access

Small offset parabolic reflector antenna design and analysis

Wojciech J. Krzysztofik

Abstract

Complete radiation pattern of a focus-fed offset parabolic reflector antenna is presented. Forward radiation and wide-angle radiation is calculated using the geometrical theory of diffraction. Effects of the offset angle and the feed pattern asymmetry on the cross-polar isolation are presented. Design criteria of an offset reflector satisfying the WARC-DBS requirements for receiving antenna, and for a given feed radiation pattern are presented. It is also shown how to determine the antenna noise temperature experimentally, using direct satellite signal.

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Available abstract

Key concepts: Offset dish antenna, Cassegrain antenna, Periscope antenna, Feed horn, Optics, Parabolic reflector, Offset (computer science), Radiation pattern