WET  Vol.2 No.1 , January 2011
An Efficient Method to Reduce the Numerical Dispersion in the HIE-FDTD Scheme
A parameter optimized approach for reducing the numerical dispersion of the 3-D hybrid implicit-explicit finite-difference time-domain (HIE-FDTD) is presented in this letter. By adding a parameter into the HIE-FDTD formulas, the error of the numerical phase velocity can be controlled, causing the numerical dispersion to decrease significantly. The numerical stability and dispersion relation are presented analytically, and numerical experiments are given to substantiate the proposed method.

Cite this paper
nullJ. Chen and A. Zhang, "An Efficient Method to Reduce the Numerical Dispersion in the HIE-FDTD Scheme," Wireless Engineering and Technology, Vol. 2 No. 1, 2011, pp. 30-36. doi: 10.4236/wet.2011.21005.

[1]   K. S. Yee, “Numerical Solution of Initial Boundary Value Problems Involving Maxwell’s Equations in Isotropic Media,” IEEE Transactions on Antennas and Propagations, Vol. 14, No. 5, May 1966, pp. 302-307.

[2]   A. Taflove, “Computational Electrodynamics,” Artech House, Norwood, 1995.

[3]   J. Chen and J. Wang, “A 3-D Hybrid Implicit-Explicit FDTD Scheme with Weakly Conditional Stability,” Microwave and Optical Technology Letters, Vol. 48, No. 3, March 2006, pp. 2291-2294. doi:10.1002/mop.21898

[4]   M. Wang, Z. Wang and J. Chen, “A Parameter Optimized ADI-FDTD Method,” IEEE Antennas and Wireless Propagation Letters, Vol. 2, No. 2, February 2003, pp. 118-121. doi:10.1109/LAWP.2003.815283