Application of the Finite-Difference Time-Domain Method to Sinusoidal Steady-State Electromagnetic-Penetration Problems

Allen Taflove*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

373 Scopus citations

Abstract

A numerical method for predicting the sinusoidal steady-state electromagnetic fields penetrating an arbitrary dielectric or conducting body is described here. The method employs the finite-difference time-domain (FD-TD) solution of Maxwell's curl equations implemented on a cubic-unit-cell space lattice. Small air-dielectric loss factors are introduced to improve the lattice truncation conditions and to accelerate convergence of cavity interior fields to the sinusoidal steady state. This method is evaluated with comparison to classical theory, method-of-moment frequency-domain numerical theory, and experimental results via application to a dielectric sphere and a cylindrical metal cavity with an aperture. Results are also given for a missile-like cavity with two different types of apertures illuminated by an axial-incidence plane wave.

Original languageEnglish (US)
Pages (from-to)191-202
Number of pages12
JournalIEEE Transactions on Electromagnetic Compatibility
VolumeEMC-22
Issue number3
DOIs
StatePublished - Aug 1980

Keywords

  • Apertures
  • Cylindrical metal cavity
  • Dielectric sphere
  • Electromaegnetic penetration
  • Finite-difference
  • Missile-like cavity
  • Plane wave
  • Steady-state
  • Time-domain

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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