The Application of Modified Phase Extracted Basis Functions in Scattering Analysis of Dielectric-Coated Targets

Abstract

Abstract-A novel basis function, called as the Modified Phase Extracted (MPE) basis function, has been proposed to analyze threedimensional scattering problems for electrically large, thin dielectriccoated targets. The MPE basis function, which can be defined on large (e.g., a wavelength or more) curvilinear geometrical elements, is developed for quadrilateral cells. Consequently, combining with the thin dielectric sheet (TDS) approximation, the MPE basis function solves the scattering problem accurately with fewer unknowns than the solutions based on the conventional basis functions. In order to improve the accuracy of the solution solving the problem which has thicker dielectric coatings, some modifications about the TDS approximation model are made. Numerical examples demonstrate that the validity of the proposed approach in solving the scattering from electrically large, thin coated objects.

Frequency Dependent Model of Sheet Resistance and Effect Analysis on Shielding Effectiveness of Transparent Conductive Mesh Coatings

“…In the case, the thickness of a mesh coating is much less than a skin depth δ, EMI shielding is almost entirely due to reflection of the incident plane wave at the air to mesh interface. And the DC sheet resistance R DC of a continuous conductive coating is a function of the metal conductivity σ and thickness t according to transmission line theory [15][16][17][18].…”