Applicability evaluation of the field reconstruction method based on boundary integral equations for practical uses

Abstract

Authors have proposed the internal electric field reconstruction method of dielectric objects based on the boundary integral equation and the method of moments’ implementation for the purpose of noninvasively estimating a specific absorption rate (SAR) in a human phantom. The validity of the method has been confirmed numerically and experimentally using simple-shaped convex dielectric objects with a very small loss. This paper assessed this method in three of more practical situations which is a concave model, a high-loss dielectric box, both for SAR estimation in the complex human phantoms, and also in a metallic enclosure with a window for the electromagnetic interference (EMI) applications. It is demonstrated numerically and experimentally that the electric field can be well reconstructed for all three situations without any methodological modifications. Hence, this method is expected to inherently possess high applicability for practical objects with a complicated geometrical shape in SAR estimation, and also for the EMI problems that includes the electric field reconstruction using the surrounding field data.