Finite difference time domain (Fdtd) analysis of an artificially-synthesized absorbing medium

Wenhua Yu, Douglas Henry Werner, Raj Mittra

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this paper, we investigate an artificially-synthesized absorbing medium by using the Finite Difference Time Domain (FDTD) technique. The artificial medium is composed of a doublyperiodic array of lossy electric and magnetic material blocks (i.e., μ and ε media arranged in a checkerboard configuration). We analyze its reflection characteristics for both normal and oblique incidence cases. It is demonstrated that, if properly designed, the reflection characteristics of the checkerboard are considerably superior to those of a uniform ε = μ material of the same thickness. A multi-layer checkerboard is used to truncate a waveguide in the FDTD simulation; the result is comparable to that of an unsplit Perfectly Matched Layer (PML) with the same number of layers.

Original languageEnglish (US)
Pages (from-to)1005-1026
Number of pages22
JournalJournal of Electromagnetic Waves and Applications
Volume15
Issue number8
DOIs
StatePublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

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