[数值]FDTD Schemes With Minimal Numerical Dispersion

Abstract—A novel formulation of hybrid finite-difference s*i,Ph  
time-domain (FDTD) methods is presented. Significant reduction !/|B4Yv  
of numerical dispersion is achieved by the proposed FDTD |q\i, }  
methods that combine the second-order and higher-order finite- X`eX+9  
differences. Also, the proposed FDTD methods exhibit gf4Hq&Rf  
significantly higher solution accuracy than the accuracy of standard k][{4~z  
FDTD schemes as a result of partial mutual cancellation of d& v 7l  
numerical errors provided by the developed FDTD update procedure.  z{V#_(  
The residual numerical error of the phase velocity remains oq1wU
@n  
low even for sampling of a few points per wavelength. Also, the /6\uBy"Xt  
FDTD schemes based on the proposed approach are faster and $ >].;y?$  
more accurate than the corresponding purely higher-order FDTD< .. qxZf!NX5  
a_b+RMy  

未注册仅能浏览部分内容，查看全部内容及附件请先 登录 或 注册

好新哟，谢谢