Accession Number:

ADP003517

Title:

Synthesis of Offset Dual Shaped Subreflector Antennas for Control of Cassegrain Aperture Distributions,

Descriptive Note:

Corporate Author:

CALIFORNIA INST OF TECH PASADENA

Personal Author(s):

Report Date:

1984-03-01

Pagination or Media Count:

32.0

Abstract:

Many existing large ground reflector antennas have been designed as Cassegrain systems - i.e., paraboloidhyperboloid-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.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE