Conference Proceeding

Numerical Dispersion Characteristics of the Three-dimensional Precise Integration Time-Domain Method

Dallousie Univ., Hailfax
IEEE MTT-S International Microwave Symposium digest. IEEE MTT-S International Microwave Symposium 07/2007; DOI:10.1109/MWSYM.2007.380198 pp.1971 - 1974 In proceeding of: Microwave Symposium, 2007. IEEE/MTT-S International
Source: IEEE Xplore

ABSTRACT This paper presents a comprehensive analysis of numerical dispersion of a recently developed unconditionally stable three-dimensional time-domain algorithm called the precise integration time-domain (PITD) method. The dispersion relation is derived analytically and the effects of spatial and time steps on the numerical dispersion are investigated. It is found the PITD scheme has advantages over the conventional Yee's FDTD method in using a large time step and over the ADI-FDTD method in having high computational accuracy. Numerical dispersion errors of the PITD method can be made nearly independent of the time-step size.

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Keywords

ADI-FDTD method
 
comprehensive analysis
 
conventional Yee's FDTD method
 
numerical dispersion
 
Numerical dispersion errors
 
PITD
 
PITD method
 
PITD scheme
 
precise integration time-domain
 
time-step size
 

Zhizhang Chen