PERFECTLY MATCHED LAYER FOR TWO-DIMENSIONAL UNCONDITIONALLY STABLE FDTD METHOD BASED ON APPROXIMATE CRANK-NICOLSON SCHEME

摘要

A perfectly matched layer (PML) is constructed for two-dimensional (2D) unconditionally stable (US) FDTD method based on an approximate Crank-Nicolson scheme. This novel PML preserves unconditional stability of the 2D US-FDTD method and has very good absorbing performance. Numerical results are included to illustrate effectiveness and performance of this new PML.