Title :
A Double-Edge-Diffraction Gaussian-Series Method for Efficient Physical Optics Analysis of Dual-Shaped-Reflector Antennas
Author_Institution :
Commonwealth Sci. & Ind. Res. Organ., ICT Centre, Epping, NSW, Australia
Abstract :
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.
Keywords :
antenna radiation patterns; geometrical theory of diffraction; multibeam antennas; physical optics; reflector antennas; Gaussian-series method; double-edge-diffraction method; dual-shaped-reflector antenna; geometrical theory of diffraction; multibeam antenna; physical-optics radiation pattern; Antenna radiation patterns; Antenna theory; Feeds; Gaussian processes; Interpolation; Pattern analysis; Physical optics; Physical theory of diffraction; Reflector antennas; Two dimensional displays; Gaussian beams; geometrical theory of diffraction; multibeam antennas; physical optics; reflector antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2005.851855
