Anechoic Chamber Simulation and Verification.

Abstract

This project considers an electromagnetic field simulation of an anechoic chamber with verification measurements. The simulation is a Geometric Optics (Ray Tracing) mathematical model of the direct path between two antennae and interfering scattering. There are two separate models due to the frequency dependent nature of the pyramidal absorbing material. The measurements and simulations were based on an azimuth cylindrical scan. The model for the frequency range of 30 to 500 MHz was used to characterized lossy specular scattering as a lossy, tapered, TEM transmission line in an inhomogeneous, anisotropic, tensor material. The frequency range of 500 MHz to 18 GHz was characterized by dominant tip diffraction of RAM patches, and the model made use of a Uniform Theory of Diffraction code for a dielectric corner.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1993
Accession Number
ADA308236

Entities

People

  • Robert M. Taylor

Organizations

  • California State University, Northridge

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Absorption
  • Anechoic Chambers
  • Computational Science
  • Computer Science
  • Computer Simulations
  • Coordinate Systems
  • Diffraction
  • Electromagnetic Fields
  • Frequency
  • Geometry
  • Mainframe Computers
  • Materials
  • Mathematical Models
  • Ray Tracing
  • Scattering
  • Simulations
  • Transmission Lines

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Microwave Engineering.
  • Phased Array Antenna Design.