Author :
Fan, Y.J. ; Ooi, B.L. ; Wang, Y. ; Yuan, G. ; Leong, M.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
A new hybrid scheme that combines the pseudospectral time domain method (PSTD) and the time domain finite element method (FEM) is proposed to overcome the courant limit of the FEM-FDTD method. The proposed TDFEM-PSTD algorithm is more efficient than the FEM-FDTD method as it only requires 2 cells per guided wavelength to maintain stability. The newly proposed domain decomposition method (DDM) and mortar technique (Jin-Fa Lee and Volakis, J.L., 2004) are employed on the interface for the transition between two non-conforming domains. Anisotropic uni-axial PML was employed to eliminate the wraparound effect of PSTD. The proposed algorithm is verified numerically.
Keywords :
computational electromagnetics; conducting bodies; electromagnetic wave propagation; electromagnetic wave scattering; finite element analysis; time-domain analysis; FEM-FDTD method; PEC cylinder; anisotropic uni-axial PML; domain decomposition method; guided wavelength; mortar technique; nonconforming domains; pseudospectral time domain method; scattering problem; time domain finite element method; wave propagation; Anisotropic magnetoresistance; Distributed decision making; Fast Fourier transforms; Finite difference methods; Finite element methods; Mortar; Sampling methods; Scattering; Stability; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552778
