Accession Number:

AD0296905

Title:

INVESTIGATION OF THE FRESNEL REGION OF A CASSEGRAIN ANTENNA

Descriptive Note:

Corporate Author:

MELPAR FALLS CHURCH VA

Personal Author(s):

Report Date:

1963-02-01

Pagination or Media Count:

37.0

Abstract:

Described is a theoretical and experimental investigation of the electromagnetic field in the fresnel region of a cassegrain antenna having structural and operating characteristics modeled to correspond with those proposed for the antennas to be used in the satellite communication system. In the experimental program, power patterns were taken at various distances in the fresnel region and near zone of a scale model cassegrain antenna. The theoretical investigation compares the expressions derived with the experimental data, and presents an interpretation of the results as a tool for the prediction of actual patterns. The limitations of the proposed antenna system with respect to on-site interference are evaluated, and methods for reducing these defects are presented.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE