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A design procedure for classical offset dual reflector antennas with circular apertures

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2 Author(s)
Brown, K.W. ; Dept. of Electr. Eng.-Electrophys., Univ. of Southern California, Los Angeles, CA, USA ; Prata, A.

A geometrical optics procedure for designing electrically optimized classical offset dual reflector antennas with circular apertures is presented. Equations are derived that allow the size and spacing of the main and subreflectors of the antenna system, along with the feed horn subintended angle, to be used as input variables of the design procedure. The procedure, together with these equations, yields an optimized design, starting from general system requirements. The procedure is demonstrated by designing both an offset Cassegrain and an offset Gregorian antenna, and is validated by analyzing their radiation patterns using physical optics surface current integration on both the main and subreflectors

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Antennas and Propagation, IEEE Transactions on  (Volume:42 ,  Issue: 8 )