Title :
Numerical dispersion analysis of an efficient unconditionally stable three-dimensional LOD-FDTD method
Author :
Min Su ; Bo Yi ; Pei-Guo Liu
Author_Institution :
Dept. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
In this paper, an improved three-dimensional (3D) locally one-dimensional finite-difference time-domain (LOD-FDTD) method is presented. In the proposed method, the time step is divided into three sub-steps. Dispersion control parameters are inducted into X, Y and Z directions. The results show that the method is stable and the normalized numerical phase velocity errors are smaller than the conventional LOD-FDTD method.
Keywords :
dispersion (wave); electromagnetic wave propagation; finite difference time-domain analysis; dispersion control parameter; improved 3D locally one-dimensional finite-difference time-domain method; normalized numerical phase velocity errors; numerical dispersion analysis; three-dimensional LOD-FDTD method; time step; Accuracy; Coplanar waveguides; Dispersion; Equations; Finite difference methods; Standards; Time-domain analysis; Courant Friedrich Lewy (CFL) limit; dispersion controls parameters; locally one-dimensional finite-difference time-domain (LOD-FDTD); numerical dispersion; stability;
Conference_Titel :
Signal Processing, Communication and Computing (ICSPCC), 2013 IEEE International Conference on
Conference_Location :
KunMing
DOI :
10.1109/ICSPCC.2013.6663982
