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, Institute of Electrical and Electronics Engineers (IEEE), Jan 1996.
The definitive version is available at http://dx.doi.org/10.1109/75.491502
Electrical and Computer Engineering
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.