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完全匹配层(PML)良好的吸波特性已成功地用于FDTD问题。Katz给出了三维问题分量场所满足的12个微分方程,但未对波在PML中的传播特性进行讨论。本文基于Katz的微分方程组,推导出了平面波解、波数及其阻抗。
Perfect Absorption Layer (PML) Good absorption characteristics have been successfully used for FDTD problems. Katz gives 12 differential equations satisfied by the three-dimensional problem component space but does not discuss the wave propagation characteristics in PML. Based on Katz’s differential equations, this paper deduces the plane wave solutions, wave numbers and their impedances.