Self-Dual Boundary Conditions in Electromaagnetics
Abstract
Invariance in duality transformation, the self-dual property, has important applications in electromagnetic engineering. In the present paper, the problem of most general linear and local boundary conditions with self-dual property is studied. Expressing the boundary conditions in terms of a generalized impedance dyadic, the self-dual boundaries fall in two sets depending on symmetry or antisymmetry of the impedance dyadic. Previously known cases are found to appear as special cases of the general theory. Plane-wave reflection from boundaries defined by each of the two cases of self-dual conditions are analyzed and waves matched to the corresponding boundaries are determined. As a numerical example, reflection from a special case, the self-dual EH boundary, is computed for two planes of incidence.
Cite
@article{arxiv.2003.03286,
title = {Self-Dual Boundary Conditions in Electromaagnetics},
author = {Ismo V. Lindell and Ari Sihvola},
journal= {arXiv preprint arXiv:2003.03286},
year = {2020}
}