Time Domain Electromagnetic Scattering Using Finite Elements and Perfectly Matched Layers

Abstract

We consider a model for the interrogation of a planar Debye medium by a non-harmonic microwave pulse from an antenna source in free space, and we compute the reflected solution using finite elements in the spatial variables and finite differences in the time variable. Perfectly Matched Layers (PMLs) and an absorbing boundary condition are used to damp waves interacting with artificial boundaries imposed to allow finite computational domains. We present simulation results showing that numerical reflections from interfaces at PML boundaries can be controlled.

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Document Details

Document Type
Technical Report
Publication Date
Jun 18, 2003
Accession Number
ADA451435

Entities

People

  • Brian L. Browning
  • H. Thomas Banks

Organizations

  • North Carolina State University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Angle Of Incidence
  • Computational Science
  • Dielectric Permittivity
  • Differential Equations
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Scattering
  • Equations
  • Frequency
  • Geometry
  • Inverse Problems
  • Materials
  • Scattering
  • Time Domain
  • Two Dimensional
  • Variational Equations
  • Wave Equations

Fields of Study

  • Mathematics
  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Space