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Efficient 3-D moment-method analysis for reflector antennas using a far-field approximation technique

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1 Author(s)
A. McCowen ; Dept. of Electr. & Electron. Eng., Swansea Univ., UK

A full 3-D moment-method analysis is used to model the radiation patterns of 10-15 λ diameter reflector antennas. The moment-method is made computationally efficient by a far-field approximation technique which dramatically reduces the demands of computer memory and CPU time by over 90%, and 80%, respectively. The reflector dishes are discretised with an unstructured 3-D finite-element-type mesh of triangles. The moment-method is applied to rotationally symmetric dishes in order to compare the accuracy of the analysis with results from a more conventional body-of-revolution type moment-method analysis

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IEE Proceedings - Microwaves, Antennas and Propagation  (Volume:146 ,  Issue: 1 )