Electromagnetic scattering of the PEMC strip located at the interface of topological insulator-dielectric by utilizing Kobayashi potential method

The scattering of electromagnetic wave by a perfect electromagnetic conductor (PEMC) strip is investigated in this article. The strip is located at the interface of semi-finite topological insulator (TI) and a dielectric. Kobayashi potential (KP) method is a fast semi-analytical approach that is applied to proposed structure. In KP, unknown weighting functions are employed to customize the scattered fields’ expressions in order to transform some of the boundary conditions to the Weber–Schafheitlin integrals, which can satisfy boundary and some of the edge conditions simultaneously. Moreover, Jacobi polynomials are used to simplify formulations and model the edge condition. The rapid rate of convergence and acceptable level of error in the proposed approach is analyzed profoundly. Furthermore, validation of the solution is investigated by comparing results with physical optics (PO) and method of moment (MoM) results. Radar cross-section (RCS) and its variation versus some crucial parameters are investigated and represented as final results.