A three-dimensional FDTD subgridding algorithm based on interpolation of current density

Kai Xiao*, David J. Pommerenke, James L. Drewniak

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

A three-dimensional snbgridding algorithm for the Finite Difference Time Domain (FDTD) method is proposed in this paper. The method is based on interpolation of electric and magnetic current densities. The coarse-fine mesh ratio can be either 1:2 or 1:3. Results of a test model utilizing a lossless cavity excited with a dipole show no tendency of instability after 500,000 time steps. The reflection in time domain at the subgridding interface was calculated to test the accuracy of the subgridding algorithm.

Original languageEnglish
Pages (from-to)118-123
Number of pages6
JournalIEEE International Symposium on Electromagnetic Compatibility
Volume1
Publication statusPublished - 8 Oct 2004
Externally publishedYes
Event2004 International Symposium on Electromagnetic Compatibility, EMC 2004 - Santa Clara, CA, United States
Duration: 9 Aug 200413 Aug 2004

Keywords

  • Electric and magnetic current density
  • FDTD
  • Linear interpolation
  • Stability
  • Subgridding
  • Symmetry

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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