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Split-Field PML Implementations for the Unconditionally Stable LOD-FDTD Method

By Valtemir E. Do Nascimento, Senior Member, Ben-hur V. Borges and O L. Teixeira


Abstract—We introduce and compare two split-field implementations of the perfectly matched layer (PML) for the unconditionally stable locally one-dimensional (LOD) finite-difference timedomain (FDTD) method. The LOD–FDTD formalism is expanded in terms of a symmetric source implementation. It is verified that the relative performance of both PML implementations is superior to the split PML performance in the alternating direction implicit (ADI) FDTD method. Index Terms—Alternating direction implicit (ADI) technique, finite-difference time-domain (FDTD) method, locally one-dimensional (LOD) technique, perfectly matched layer (PML). I

Year: 2009
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