Title :
Extending the Stability Limit of the FDTD Method With Spatial Filtering
Author :
Sarris, Costas D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
fDate :
4/1/2011 12:00:00 AM
Abstract :
It is shown that the well-known Courant stability limit of the finite-difference time-domain (FDTD) method can be controlled and extended by filtering out unstable spatial harmonics that develop when the time-step is chosen to exceed this limit. The formulation of a spatially filtered FDTD algorithm is accompanied by a numerical benchmarking study that includes cavity resonator and backward wave media simulations.
Keywords :
cavity resonator filters; finite difference time-domain analysis; harmonics; numerical stability; Courant stability limit; FDTD method; backward wave media simulation; cavity resonator; finite-difference time-domain method; spatial filtering; spatial harmonics; Finite difference methods; Numerical stability; Power harmonic filters; Power system stability; Stability criteria; Time domain analysis; Finite-difference time-domain; numerical stability;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2011.2105467
