Abstract
AbstractA 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
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