Time-Domain Finite Element Method Based on Smoothed Cosine Temporal Basis Function for Three-Dimensional EM Radiation Problem
A novel time-domain finite element method (TDFEM) based on Smoothed Cosine temporal basis function is presented in this paper. This method is motivated by goals of achieving higher computational efficiency. Unlike the reported TDFEM scheme1,which is based on Galerkins method with a piecewise linear temporal expansion of electric field, the electric field in our approach is expanded in terms of Smoothed Cosine basis function.Smoothed Cosine function is chosen as temporal basis function for not only a smoother interpolation but also a more robust approximation2. Moreover, this scheme allows for a consistent time discretization of the electric field vector wave equation and its augmented PML regions. The novel scheme is first verified on a cavity problem, whose results agree with the analytical solution very well. Finally the scheme is applied to a dipole antenna and the results have good agreement with those from TDFEM based on linear temporal basis function.
TDFEM Smoothed Cosine temporal basis function EM radiation Ultra-wideband antenna
Xia Wu Lezhu Zhou
School of Electronics Engineering and Computer Science,Peking University Beijing,P.R.China
国际会议
2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)
南京
英文
391-394
2008-04-21（万方平台首次上网日期，不代表论文的发表时间）