Synthesis of Offset Dual Shaped Subreflector Antennas for Control of Cassegrain Aperture Distributions,
Abstract
Many existing large ground reflector antennas have been designed as Cassegrain systems - i.e., paraboloid/hyperboloid-combinations. Other large ground antennas are simply paraboloid designs. Upgrading the gain of these systems to a gain comparable to that obtainable with a daul shaped reflector antenna system has been an important and costly objective of many such ground stations. A potentially economic method for such an antenna upgrade is presented herein. It involves a redesign of only the subreflector portion of a Cassegrain antenna or the introduction of a subreflector feed system for a paraboloid. A pair of offset subreflectors are synthesized which will give a controllable high gain amplitude distribution in the aperture of the large paraboloid.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1984
- Accession Number
- ADP003517
Entities
People
- R. Mittra
- V. Galindo-israel
Organizations
- California Institute of Technology