In this paper, a parallel Higher-order FDTD (HO-FDTD) algorithm is described. Moreover, a novel implementation of convolution PML (CPML) is presented for the HO-FDTD method. A printed microstrip patch antenna is designed to analyze the feasibility of the parallel algorithm and the absorbing performance of the CPML. Moreover, the proposed algorithm is used to deal with the large-scale computational model of the vaulted tunnel. The simulation results show that the adopted parallel strategy is feasible. and the CPML performs well in the HO-FDTD scheme.
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