Title :
Numerical Dispersion Analysis of FETD Method
Author :
Yuan, Hong ; Yang, Hongwei ; Chen, Rushan ; Zhang, Xin ; Zhou, Yongchun
Author_Institution :
Nanjng Agric. Univ., Nanjing
Abstract :
The finite-element time-domain method (FETD) has been developed in order to simulate the complex electromagnetic structures. In this paper, an analysis of the numerical stability and dispersion of this method are presented. It is found that the stability is strongly depended upon the the temporal step size, and the numerical dispersion is bounded by the ratio of the carrier wavelength to the spatial step size. And, in comparsion with the the finite-difference time-domain (FDTD) method, the FETD is proven to be advantaeous in the problems of large scale objects.
Keywords :
electromagnetic wave absorption; electromagnetic wave scattering; finite element analysis; numerical stability; time-domain analysis; FETD method; complex electromagnetic structure simulation; finite-element time-domain method; numerical dispersion analysis; numerical stability analysis; temporal step size; Dispersion; Electromagnetic analysis; Equations; Finite difference methods; Finite element methods; Large-scale systems; Numerical stability; Sparse matrices; Stability analysis; Time domain analysis; finite-element time-domain (FETD); numerical dispersion; stability condition;
Conference_Titel :
Antennas, Propagation & EM Theory, 2006. ISAPE '06. 7th International Symposium on
Conference_Location :
Guilin
Print_ISBN :
1-4244-0162-3
Electronic_ISBN :
1-4244-0163-1
DOI :
10.1109/ISAPE.2006.353577
