Observation-point-dependent blocking shadows on a reflector antenna
暂无分享,去创建一个
The authors present efficient algorithms that can be incorporated in a physical-optics integration to account for migrating feed- and observation-point-dependent geometrical shadows caused by obstacles in the aperture of a reflector antenna with the feed under focused or scanned conditions. The expressions involve only addition and multiplication of simple low-order polynomials and hence do not introduce expensive overhead into the numerical integration. Obstacle shapes considered are disks, polygons, cylinders, and polyhedrons. Some appropriate diffraction corrections are presented which are compatible with the blocking algorithms. >
[1] W. Rusch,et al. Radiation cones from feed-support struts of symmetric paraboloidal antennas , 1982 .
[2] Raj Mittra,et al. Forward scattering from square cylinders in the resonance region with application to aperture blockage , 1976 .
[3] W. Rusch. 1.3. Analysis of Paraboloidal-Reflector Systems , 1976 .
[4] S. Silver. Microwave antenna theory and design , 1949 .