An Improved Formulation for Extending the Geometrical Theory of Diffraction by the Moment Method.

Abstract

Previous work in extending the GTD via the moment method required special consideration for those cases where the incident ray was nearly tangent to one of the faces of the wedge. This difficulty may be overcome by using a series of three terms based upon approximate expressions for the Fresnel integral. Results are shown for the currents on the faces of a wedge calculated with the improved formulation and these are compared with the exact results. In all cases agreement is excellent. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1977
Accession Number
ADA041775

Entities

People

  • Gary A. Thiele
  • John Sahalos

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Coefficients
  • Diffraction
  • Electrical Engineering
  • Engineering
  • Equations
  • Fresnel Integrals
  • Geometry
  • Integrals
  • Magnetic Fields
  • Military Research
  • Plane Waves
  • Two Dimensional

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering