Electromagnetic modeling of inhomogeneous and anisotropic structures by volume integral equation methods

Abstract

Given the application of inhomogeneous and anisotropic structures in different application areas, it is of critical importance to develop accurate and efficient modeling methods. Among various methods, volume integral equations (VIEs) using moment method are efficient solutions for electromagnetic modeling of inhomogeneous and anisotropic structures. In this paper, we investigate the solutions of the VIE method and augmented volume integral equation (A-VIE) method for solving inhomogeneous and anisotropic structures with arbitrary shapes. The moment method solutions are presented and curl-conforming bases are used to discretize the electric and magnetic field distributions inside the structures. When the structures contain inhomogeneous magnetic materials, A-VIE method is applied. Various numerical examples are shown to demonstrate the accuracy and efficiency of the algorithms.