A hybrid FDTD and leapfrog ADI-FDTD method with PML implementation

Summary form only given, as follows. In this paper, a hybrid FDTD and leapfrog alternating-direction-implicit finite-difference time-domain (ADI-FDTD) method is presented. The perfectly matched layer (PML) absorbing boundary conditions are also incorporated in the method and non-uniform grids are deployed to efficiently model electromagnetic radiation and scattering in open domains. In the method, a single relatively large time step can be used uniformly over a complete solution domain; this yields a significant CPU time reduction.