Ray Constraints on the Design of an Offset Feed Array for a Dual Reflector System Using a Guided Computer Search Method

摘要

In this report an offset feed double-reflector is described. The two foci of the ellipse area at the center of the main reflector and at the center of the feed array. A search algorithm based on ray constraints is used to design such a system which can achieve a minimum size for both the subreflector and the feed array. At the same time this design also minimizes the blockage problem and achieves the best array illumination function. Typical design results for different scan angles are presented. (Author)