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Modification to convolution CFS‐PML for the ADI‐FDTD method
Author(s) -
Wang Linnian,
Liang Changhong,
Li Long
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21322
Subject(s) - perfectly matched layer , finite difference time domain method , convolution (computer science) , microwave , reflection (computer programming) , scaling , function (biology) , boundary (topology) , computer science , algorithm , mathematics , electronic engineering , physics , mathematical analysis , optics , engineering , telecommunications , geometry , machine learning , evolutionary biology , artificial neural network , biology , programming language
Abstract A new implementation of perfectly matched layer (PML) using the recursive‐convolution technique is introduced for an alternating‐direction implicit (ADI) finite‐difference time‐domain (FDTD) method. Based on a “complex frequency‐shifted (CFS)” scaling function, this PML boundary condition is highly effective at absorbing low‐frequency evanescent waves. The numerical results show that, compared with its previously suggested analogue, the new method improves the reflection error by 30 dB for large time‐step sizes. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 261–265, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21322