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GO Shaping of Omnidirectional Dual-Reflector Antennas for a Prescribed Equi-Phase Aperture Field Distribution

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3 Author(s)
da Silva Moreira, F.J. ; Dept. of Electron. Eng., Univ. Fed. de Minas Gerais, Belo Horizonte ; Prata, A. ; Bergmann, J.R.

A formulation is presented for shaping dual-reflector antennas designed to offer an omnidirectional coverage. The shaping procedure is based on geometrical optics (GO) principles and assumes a uniform phase distribution for the aperture field. Two distinct dual-reflector arrangements, based on the axis-displaced Cassegrain (ADC) and ellipse (ADE) configurations, are investigated. The GO shaping results are validated using the accurate analysis provided by the method-of-moments technique

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Antennas and Propagation, IEEE Transactions on  (Volume:55 ,  Issue: 1 )