Integral Equations and Discretizations for Waveguide Apertures

Abstract

This report presents integral equations and their discretizations for calculating the fields radiated from arbitrarily shaped antennas fed by cylindrical waveguides of arbitrary cross sections. We give results for scalar fields in two dimensions with Dirichiet and Neumann boundary conditions and for (vector) electric and magnetic fields in three dimensions. The discretized forms of the equations are cast in identical format for all four cases. Feed modes can be TM. TE. or transverse electromagnetic (TEM). A method for numerically computing the modes of an arbitrarily shaped cylindrical waveguide aperture is also given. Index Terms-Aperture antennas. integral equations.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1998
Accession Number
ADA381021

Entities

People

  • George C. Valley
  • John J. Ottusch
  • Stephen Wandzura

Organizations

  • HRL Laboratories

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Applied Mathematics
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Electromagnetic Scattering
  • Formulas (Mathematics)
  • Geography
  • Geometric Forms
  • Geometry
  • Integral Equations
  • Numerical Analysis
  • Partial Differential Equations
  • Physics Laboratories
  • Three Dimensional
  • Two Dimensional
  • Wave Equations
  • Wave Functions

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)