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

• 作者: CHEN Yanfang WANG Liwei
• 来源期刊: 系统工程与电子技术（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: ELECTRONICS TECHNOLOGY
• 页码范围: 31-37
• 页数: 7页
• 语种: 英文
• DOI: 10.23919/JSEE.2021.000004

摘要

By incorporating the higher order concept, the piece-wise linear recursive convolution (PLRC) method and Crank-Nicolson 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 CFS-NPML formulation, the higher order concept PLRC method and the unconditionally stable CNDG algorithm in terms of absorb-ing performance, computational efficiency, calculation accuracy and convenient implementation. A numerical example is carried out to demonstrate the effectiveness and efficiency of the pro-posed 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 en-largement of time steps.