An explicit formulation of the finite-difference time-domain-discrete surface integral (FDTD-DSI) technique has allowed a rigorous study of numerical dispersion for the method. The study shows that the DSI- and tensor-based FDTD methods do not have the same numerical dispersion relation. It also clarifies the recently reported discrepancies in the dispersion relation between the two approaches. This study also shows that the tensor-based FDTD algorithm exhibits better dispersion properties for a two-dimensional uniformly skewed mesh.
H. Shi and J. L. Drewniak, "Dispersion Comparison for DSI- and Tensor-Based Nonorthogonal FDTD," IEEE Microwave and Guided Wave Letters, vol. 6, no. 5, pp. 193-195, Institute of Electrical and Electronics Engineers (IEEE), May 1996.
The definitive version is available at https://doi.org/10.1109/75.491502
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Algorithm; Dispersion Relations; Finite Difference Time-Domain Analysis; Finite-Difference Time-Domain-Discrete Surface Integral; Nonorthogonal FDTD-DSI; Numerical Dispersion Relation; Tensor; Tensors; Two-Dimensional Uniformly Skewed Mesh
International Standard Serial Number (ISSN)
Article - Journal
© 1996 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.