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A Double-Edge-Diffraction Gaussian-Series Method for Efficient Physical Optics Analysis of Dual-Shaped-Reflector Antennas

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1 Author(s)
Hay, S.G. ; Commonwealth Sci. & Ind. Res. Organ., ICT Centre, Epping, NSW, Australia

The paper describes an efficient method for evaluating the physical-optics radiation pattern of a dual-shaped-reflector antenna. The method consists in representing the integrands of the four- and two-dimensional (4-, 2-D) field integrals as Gaussian series and then analytically integrating each term, including the effects of diffraction by the edges of both reflectors. The method is applied to a multibeam antenna and compared to numerical integration. Similar radiation patterns are obtained but with the new method significantly reducing the computation time.

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Antennas and Propagation, IEEE Transactions on  (Volume:53 ,  Issue: 8 )