A technique for reducing the numerical dispersion of conditionally and unconditionally stable FDTD methods Conference

Ogurtsov, S, Georgakopoulos, S. (2008). A technique for reducing the numerical dispersion of conditionally and unconditionally stable FDTD methods . 10.1109/APS.2008.4619236

cited authors

  • Ogurtsov, S; Georgakopoulos, S

authors

abstract

  • We present an approach to reduce the numerical dispersion of the FDTD method for its conditionally and unconditionally stable implementations. Significant reduction of the numerical error is achieved in a wide frequency band and for low spatial sampling rates. The cancellation of the numerical dispersion errors is achieved by the proposed combination of second order and higher order finite-difference approximations for the spatial derivatives of Maxwell's equations. Also, the proposed update schemes are more accurate and faster than the corresponding higher order FDTD schemes for the same time-space discretization. Finally, test examples are provided for validation and verification purposes. © 2008 IEEE.

publication date

  • November 13, 2008

Digital Object Identifier (DOI)