• ELECTRONICS TECHNOLOGY •

### Unsplit-field higher-order nearly PML for arbitrary media in EM simulation

Haolin JIANG1(), Yongjun XIE2(), Peiyu WU2(), Jianfeng ZHANG1(), Liqiang NIU2,*()

1. 1 School of Infomation Science and Engineering, Southeast University, Nanjing 210096, China
2 School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
• Received:2020-01-14 Online:2021-02-18 Published:2021-03-16
• Contact: Liqiang NIU E-mail:haolinjiang.cem@gmail.com;yjxie@buaa.edu.cn;wupuuu@yahoo.com;jfzhang@seu.edu.cn;liqiangniu@126.com
• About author:|JIANG Haolin was born in 1989. He received his B.S. degree in the School of Electronic Engineering from Tianjin University of Technology and Education in 2012, and M.S. degree in the School of Electronics and Information Engineering from Tianjin Polytechnic University in 2016. He is currently working toward his Ph.D. degree in the School of Information Science and Engineering at Southeast University, Nanjing. His current research interests include computational electromagnetics and parallel computing. E-mail: haolinjiang.cem@gmail.com||XIE Yongjun was born in 1968. He received his B.S., M.S., and Ph.D. degrees in electronic engineering from Xidian University, Xi’an, China, in 1990, 1993, and 1996, respectively. From March 1998 to November 1999, he joined the University of Texas at Dallas, Dallas, TX, USA, as a postdoctoral research associate. From December 1999 to October 2001, he was a postdoctoral research associate with Duke University. In October 2001, he joined Xidian University as a professor. In 2004, he was supported by the Program for the New Century Excellent Talents launched by Ministry of Education, China. Since 2009, he is currently a professor with Beihang University, Beijing, China. His research interests include computational electromagnetics, electromagnetic theory, microwave technology, antenna theory, microwave components, terahertz technology and mobile telecommunication. E-mail: yjxie@buaa.edu.cn||WU Peiyu was born in 1994. He received his B.S. and M.S. degrees in the School of Electronics and Information Engineering from Tianjin Polytechnic University in 2016 and 2019, respectively. He is currently working towards his Ph.D. degree in the School of Electronic and Information Engineering at Beihang University, Beijing. His current research interests include the computational electromagnetics, antennas and microwave components. E-mail: wupuuu@yahoo.com||ZHANG Jianfeng was born in 1979. He received his B.E. degree from Shandong University, Shandong, in 2000, M.E. degree from the 14th Research Institute of China Electronics Technology Group Corporation, Nanjing, China, in 2004, and Ph.D. degree from Southeast University, Nanjing, China, in 2008. He is currently a lecturer with the School of Information Science and Engineering, Southeast University. His current research interests include computational electromagnetics and fast algorithms. E-mail: jfzhang@seu.edu.cn||NIU Liqiang was born in 1980. He received his B.S. and M.S. degrees in the School of Information Science and Engineering from Shandong University of Science and Technology and the School of Physics Science and Information Technology from Liaocheng University, respectively. He is currently working towards his Ph.D. degree in the School of Electronic and Information Engineering at Beihang University, Beijing. His current research interests include computational electromagnetics and electronic counter-measures. E-mail: liqiangniu@126.com
• Supported by:
This work was supported by the National Natural Science Foundation of China (61571022; 61971022)

Abstract:

An unsplit-field higher order nearly perfectly matched layer (NPML) based on the auxiliary differential equation approach is introduced in three-dimensional finite-difference time-domain lattices. The proposed scheme has the advantage of both the NPML scheme and the higher order concept in terms of the improved absorbing performance and considerable computational efficiency. By incorporating with the generalized material independent concept, the proposed implementation is independent of the material’s type. Thus, it has the advantages of terminating arbitrary media without changing the updated equations in the PML regions. Its effectiveness and efficiency is further demonstrated through numerical examples.