Title :
Improvement on the numerical dispersion of 2-D ADI-FDTD with artificial anisotropy
Author_Institution :
Nokia Res. Center, Radio Commun. Lab., Helsinki, Finland
fDate :
6/1/2004 12:00:00 AM
Abstract :
In this letter, by introducing artificial anisotropy into computational space, a simple and efficient approach to reduce numerical dispersion of the two-dimensional alternating direction implicit finite-difference time-domain (ADI-FDTD) method is proposed. It is shown that performance of the ADI-FDTD method can be improved significantly for both single frequency simulations and relatively wideband problems. Consequently, the usefulness and effectiveness of the ADI-FDTD method can be notably enhanced.
Keywords :
anisotropic media; electromagnetic wave propagation; finite difference time-domain analysis; numerical stability; 2D ADI-FDTD; EM waves; alternating direction implicit finite-difference time-domain; artificial anisotropy; computational space; frequency simulations; numerical dispersion; wideband problems; Anisotropic magnetoresistance; Computational modeling; Dispersion; Finite difference methods; Frequency; Helium; Stability; Tellurium; Time domain analysis; Wideband; ADI-FDTD; Alternating direction implicit finite-difference time-domain; artificial anisotropy; method; numerical dispersion;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2004.828002
