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.
K. Xiao et al., "A Three-Dimensional FDTD Subgridding Algorithm Based on Interpolation of Current Density," Proceedings of the IEEE International Symposium on Electromagnetic Compatibility, 2004, Institute of Electrical and Electronics Engineers (IEEE), Jan 2004.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.2004.1350008
IEEE International Symposium on Electromagnetic Compatibility, 2004
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
Article - Conference proceedings
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