INVESTIGATION OF THE FRESNEL REGION OF A CASSEGRAIN ANTENNA

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.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1963
Accession Number
AD0296905

Entities

People

  • Dougal W.s. Prins

Organizations

  • Melpar

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Antennas
  • Cassegrain Antennas
  • Communication Systems
  • Contracts
  • Electromagnetic Fields
  • Far Field
  • Frequency
  • Fresnel Integrals
  • Government Procurement
  • Integrals
  • Materials
  • Mathematical Models
  • Models
  • New York
  • Power Series
  • United States

Fields of Study

  • Engineering
  • Physics

Readers

  • Aerospace Test and Evaluation
  • Optical Physics and Photonics.
  • Theoretical Analysis.

Technology Areas

  • Space