Null Generation Using Discs on a Reflector.

Abstract

It has been shown possible experimentally to produce nulls in the pattern of prime focus reflector antenna using discs mounted on the dish. A model of this antenna system is developed to evaluate optimal configurations and ideal performance. Aperture integration is the method of analysis used. Discs' effects are modeled as a phase shift on the aperture. No secondary effects, such as diffraction, are considered. Based on the model developed, guidelines are presented for antenna design. Computer code was written to implement the model and a prediction of antenna system's performance is presented. Originator supplied keywords: Antenna, Directional antenna, and Parabolic antennas. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADA151897

Entities

People

  • M. D. Rudisill

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Antennas
  • Bessel Functions
  • Classification
  • Computers
  • Coordinate Systems
  • Demographic Cohorts
  • Diffraction
  • Electric Fields
  • Engineering
  • Far Field
  • Phase Shift
  • Radiation
  • Radiation Patterns
  • Reflectors
  • Security

Fields of Study

  • Engineering
  • Physics

Readers

  • Computational Modeling and Simulation
  • Optical Physics and Photonics.
  • Positioning, Navigation, and Timing (PNT) Technology.