Scattering of electromagnetic waves by a material half-space with a time-varying conductivity

Fady A. Harfoush, Allen Taflove

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

This paper analyzes for the first time electromagnetic wave penetration and scattering interactions for a material half-space having sinusoidally time-varying conductivity. Two limiting cases are considered. The first assumes that the material conductivity is almost a constant with a small temporal perturbation. The problem is accordingly attacked with first-order perturbation methods. The second exploits a large dimensionless parameter and yields an asymptotic expansion of the field inside a highly conducting material undergoing sinusoidal time variation. Illustrative examples are given which agree well with numerically obtained finite-difference time-domain (FDTD) results.

Original languageEnglish (US)
Pages (from-to)898-906
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Volume39
Issue number7
DOIs
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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