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J Electromagn Eng Sci > Volume 8(4); 2008 > Article
Journal of the Korean Institute of Electromagnetic and Science 2008;8(4):139-143.
DOI: https://doi.org/10.5515/JKIEES.2008.8.4.139   
New Weighting Factor of 2D Isotropic-Dispersion Finite Difference Time Domain(ID-FDTD) Algorithm
Meng Zhao, Il-Suek Koh
Graduate School of Information and Communication, Inha Univeristy
Abstract
In this paper, a new scheme to calculate the weighting factor of the 2-D isotropic-dispersion finite difference time domain(ID-FDTD) is proposed. The weighting factor in [1] was formulated in free space, so that it may not be optimal in dielectric media. Therefore, the weighting factor was reformulated by considering the material properties and using the least mean square method. As a result, a minimum numerical dispersion error for any dielectric media is guaranteed.
Key words: FDTD, ID-FDTD, Weighting Factor, Numerical Dispersion Error

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