Study of the CPML for the Three‐Dimensional Five‐Step LOD‐FDTD method

In this paper, the convolution perfectly matched layer (CPML) absorbing boundary conditions (ABC) in five‐step locally one‐dimensional finite‐difference time‐domain (LOD5‐FDTD) method are deduced. The formulation of the LOD5‐FDTD is derived and numerical results are demonstrated for different Courant Friedrich Levy numbers (CFL) in the simulation domain in the test. Then, using a sinusoidal source, the field phase distribution surrounded by the CPML‐ABC is calculated. The results of these simulation experiments illustrate that the CPML‐ABC can be used efficiently in the LOD5‐FDTD method.