Abstract
The nearly perfectly matched layer (NPML) with the complex frequency-shifted (CFS) factor, named here as the CFS-NPML, is proposed to truncate the finite-difference time-domain (FDTD) grids. To estimate the absorbing performance of the proposed CFS-NPML, we simulate the radiation of a dipole antenna in three-dimensional (3-D) free space. The simulation results demonstrate that the CFS-NPML significantly enhance the absorbing performance compared with the original NPML.
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