Abstract

ABSTRACT This paper presents an efficient technique developed to analyse dual reflector antenna systems operating with double curved dichroic subreflectors. The analysis is based on the Physical Optics integration of proper equivalent currents computed on the subreflector surface. The possibility of determining the optimum position of the dichroic subreflector in the antenna system, taking conveniently into account its finite thickness, is also discussed and evidenced through a meaningful example of design analysis. The same example gives to the reader an idea about the high performance achievable by dichroic antennas.

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