Scattering Analysis of Bi-Isotropic Objects by Current-based Volume Integral Equations

This paper presents a method of moments (MoM) solutions of volume integral equations (VIEs) for electromagnetic scattering analysis from bi-isotropic objects. The VIEs method is in terms of equivalent volume electric currents and magnetic currents. In comparison with the traditional VIEs, this method shows more convenient in the implementation process, since the material is dependent of integrands. In our scheme, nonconformal discretization can be achieved by introducing the half basis function, i.e. half-CSWG. That achievement origins from the fact that the equivalent currents have no continuity across the material interfaces. Numerical results are given to demonstrate the validity of our discretization method.