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Article
A Three-Dimensional FDTD Subgridding Algorithm Based on Interpolation of Current Density
Proceedings of the IEEE International Symposium on Electromagnetic Compatibility, 2004
  • Kai Xiao
  • David Pommerenke, Missouri University of Science and Technology
  • James L. Drewniak, Missouri University of Science and Technology
Abstract
A three-dimensional subgridding 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 500000 time steps. The reflection in time domain at the subgridding interface was calculated to test the accuracy of the subgridding algorithm.
Meeting Name
IEEE International Symposium on Electromagnetic Compatibility, 2004
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
  • FDTD Algorithm,
  • Coarse-Fine Mesh Ratio,
  • Current Density,
  • Dipole Excitation,
  • Electric Current Density,
  • Electromagnetic Compatibility,
  • Electromagnetic Modeling,
  • Finite Difference Time Domain Method,
  • Finite Difference Time-Domain Analysis,
  • Instability,
  • Interpolation,
  • Lossless Cavity,
  • Magnetic Current Density,
  • Subgridding Interface,
  • Three-Dimensional Subgridding Algorithm
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2004 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
1-1-2004
Citation Information
Kai Xiao, David Pommerenke and James L. Drewniak. "A Three-Dimensional FDTD Subgridding Algorithm Based on Interpolation of Current Density" Proceedings of the IEEE International Symposium on Electromagnetic Compatibility, 2004 (2004)
Available at: http://works.bepress.com/david-pommerenke/23/