New Principle for Scattering Inside A Huygens Bianisotropic Medium

TL;DR

This paper introduces a new principle describing how scattering occurs within a Huygens bianisotropic medium, emphasizing the roles of internal and surface currents in radiating fields externally.

Contribution

It formulates a novel scattering principle specific to Huygens bianisotropic media, detailing the behavior of internal and surface currents in such environments.

Findings

Internal field phasors act as volume currents

Surface tangential components act as surface currents

Radiation in the external region is identical to incident fields

Abstract

A Huygens bianisotropic medium is a linear homogeneous medium for which the Huygens principle can be formulated. When a bounded 3D scattering object composed of a linear bianisotropic medium, whether homogeneous or not, is embedded in a Huygens bianisotropic medium, the excess field phasors inside that object act as volume current densities, and the tangential components of the internal field phasors on the surface of the same object act as surface current densities, to radiate identical field phasors in the external region.