Analysis of Monopole Antenna Arrays on Cylinders by the Geometrical Theory of Diffraction.

Abstract

Using the Geometrical Theory of Diffraction (GTD) the fields due to a monopole array mounted on an aircraft near the top or bottom were analyzed. The aircraft was modeled in its most basic form; an infinitely long elliptical cylinder. The aircraft cross-section at the location of the antenna was modeled as a 2 meter by 4 meter ellipse. The frequency band of operation was 250 mHz to 400 mHz with an average wavelength assumed of 1 meter. The three element array was found to have a beam broadening effect when compared to the array mounted on an infinite ground plane. The array exhibited a poor potential to form a single major lobe in its antenna pattern but had a high mobility of pattern nulls. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA055197

Entities

People

  • Bruce A. Thieman

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Antenna Arrays
  • Antennas
  • Applied Mathematics
  • Boundary Value Problems
  • Coordinate Systems
  • Curvature
  • Differential Equations
  • Diffraction
  • Electric Fields
  • Electrical Engineering
  • Electromagnetic Fields
  • Engineering
  • Equations
  • Geometry
  • Radiation
  • Scattering

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering