Citation
Abstract
Analyses of reflector antenna surfaces use a computer program based on a discrete approximation of the radiation integral. The calculation replaces the actual surface with a triangular facet representation; the physical optics current ts assumed to be constant over each facet. This article describes a method of calculation using linear-phase approximation of the surface currents of parabolas, ellipses, and shaped subreflectors and compares results with a previous program that used a constantphase approximation of the triangular facets. The results show that the linear-phase approximation is a significant improvement over the constant-phase approximation, and enables computation of 100-1,000X reflectors within a reasonable time on a Cray computer.
Details
- Volume
- 42-102
- Published
- August 15, 1990
- Pages
- 47–56
- File Size
- 259.1 KB