Title :
The dispersion characteristics of the FD-TD method
Author :
Choi, Dennis H. ; Roy, Jasmin E.
Author_Institution :
Fac. of Eng., Regina Univ., Sask., Canada
Abstract :
The numerical phase and group velocity characteristics of the three-dimensional FDTD (finite-difference time-domain) algorithm are derived from the dispersion relation for wave propagation in the TEM, TE, or TM mode. From these dispersion characteristics, numerical errors due to dispersion can be easily assessed and would be used in determining the mesh size and the stability factor in order to minimize such errors.<>
Keywords :
difference equations; dispersion (wave); electromagnetic wave propagation; time-domain analysis; TE mode; TEM mode; TM mode; dispersion characteristics; dispersion relation; finite difference time domain algorithm; group velocity characteristics; mesh size; numerical errors; numerical phase characteristics; stability factor; wave propagation; Councils; Cutoff frequency; Dispersion; Finite difference methods; Mesh networks; Rectangular waveguides; Scattering parameters; Stability; Tellurium;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134602
