Abstract:

In calculating electromagnetic scattering of arbitrary 3D structures in multilayered planar media, the main task is to calculate the Green’s function. The conventional discrete complex image method (DCIM) has some limitations. In this paper, we combine the enhanced DCIM (E-DCIM) with two dimensional DCIM (2D-DCIM) to compute the spatial domain closed-form Green’s function for arbitrary 3D structures partially embedded in dielectric interface in lossy multilayered media. The results are compared with the values obtained with numerical integration, and show agreement between the two methods. Compared with the 1D-DCIM, the impedance matrix filling efficiency of the method of moments (MoM) is significantly improved. The problem of finding the spatial Green’s function in lossy media is effectively solved. The proposed method is applicable to practical engineering.

Key words: electromagnetic scattering, method of moments, layered media, Green’s function, enhanced DCIM (E-DCIM), two-dimensional DCIM (2D-DCIM)