New 3D hybrid FDTD-FETD method with non-conformal mesh

A new efficient 3D hybrid FDTD-FETD method is proposed to exploit the advantages of FDTD and FETD for electromagnetic modeling. The proposed method implements the hybrid of FDTD and FETD with a buffer region and allows non-conformal mesh for spatial discretization, which preserves the mesh flexibility as in FETD and thus facilitates the hybrid method for practical application. Furthermore, discontinuous Galerkin method is employed to realize field communication at the interface between the non-conformal mesh in different subdomains. Finally, numerical results are shown to validate the proposed hybrid method and demonstrate its flexibility for modeling cases with fine structures.