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Efficient Simulation of Electromagnetic Wave Propagation in Complex Shaped Domain by Hybrid Method of FDTD and MTDM Based on Interpolating Moving Least Squares Method

To utilize the advantages of both finite-difference time-domain (FDTD) method and meshless time-domain method (MTDM) based on the interpolating moving least squares method, a hybrid method of FDTD and MTDM has been proposed for electromagnetic wave propagation simulations in complex shaped domains. In this method, FDTD is employed in rectangle domains, and MTDM is used in other kinds of domains. Numerical experiments show that the electric field is smoothly propagated, containing connection parts of domains calculated by FDTD and MTDM. In addition, the convergence value of amplification/damping rate of a hybrid method is almost the same as that of FDTD, and the accuracy of the hybrid method is better than that of FDTD for the case where the number of nodes is relatively small. Furthermore, the computation time of the hybrid method is less than that of MTDM.