Low-Frequency Transmitted Fields of a Source Inside a Magnetic Shell with Large Conductivity

Abstract

The method to evaluate the transmitted fields of a source inside a simply connected magnetic shell with large but finite conductivity at low frequencies is proposed in this paper. When modeling the magnetic shell with large conductivity, it is regarded as a penetrable object. Electric field integral equation (EFIE) is selected for the exterior region problem and magnetic field integral equation (MFIE) is chosen for the interior region problem. Each operator is decomposed with loop-star functions to overcome the problem of low-frequency breakdown. Numerical results verify the accuracy of the proposed method.