Higher order implicit CNDG-PML algorithm for left-handed materials  

作　　者：CHEN Yanfang WANG Liwei 

机构地区：[1]School of Electrical and Information Engineering,Tianjin University,Tianjin 300072,China [2]Tianjin Key Laboratory of Intelligent Information Processing in Remote Sensing,Tianjin Zhongwei Aerospace Data System Technology Co.,Ltd.,Tianjin 300450,China

出　　处：《Journal of Systems Engineering and Electronics》2021年第1期31-37,共7页系统工程与电子技术（英文版）

摘　　要：By incorporating the higher order concept,the piecewise linear recursive convolution(PLRC)method and CrankNicolson Douglas-Gunn(CNDG)algorithm,the unconditionally stable complex frequency shifted nearly perfectly matched layer(CFS-NPML)is proposed to terminate the left-handed material(LHM)domain.The proposed scheme takes advantages of CFSNPML formulation,the higher order concept PLRC method and the unconditionally stable CNDG algorithm in terms of absorbing performance,computational efficiency,calculation accuracy and convenient implementation.A numerical example is carried out to demonstrate the effectiveness and efficiency of the proposed scheme.The results indicate that the proposed scheme can not only have considerable absorbing performance but also maintain the unconditional stability of the algorithm with the enlargement of time steps.

关 键 词：complex frequency shifted nearly perfectly matched layer(CFS-NPML) Crank-Nicolson Douglas-Gunn(CNDG) left-handed material(LHM) piecewise linear recursive convolution(PLRC) 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]