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Matched-Feeds for Offset Parabolic Reflector Antennas

In many practical applications the performance of offset parabolic reflector antennas are limited by the reflectors' depolarising and beam-squinting properties. The paper describes progress in the development of a new class of primary-feed antennas which overcome these major limitations. Computed data based upon analytical models of the antennas and experimental results obtained from antennas constructed for operation at 30 GHz are presented for applications which include both communications and tracking radars.