UPML Absorbing Boundary Condition for Truncating the Boundary of DNG Metamaterials
The conventional perfectly matched layer (PML) absorbing boundary condition is shown to be unstable when it is extended to truncate the boundary of the double negative (DNG) medium. It is a consequence of the reverse directions of the Poynting and phase-velocity vectors of plane waves propagating in such material. In this paper, a modified uniaxial PML (UPML) which is stable for the DNG medium is derived. The auxiliary differential equation technique is introduced to derive the discrete field-update equations of DNG-UPML. Numerical results demonstrate the effectiveness and stability of the new UPML for the DNG medium.
K. S. Zheng W. Y. Tam D. B. Ge
Department of Electronic and Information Engineering The Hong Kong Polytechnic University, Kowloon, Department of Physics, Xidian University, Shaanxi 710071, China
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
905-909
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）