Generalization of Perfect Electromagnetic Conductor Boundary

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors

Date

2020-11

Department

Department of Electronics and Nanoengineering

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Mcode

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Language

en

Pages

8
7406-7413

Series

IEEE Transactions on Antennas and Propagation, Volume 68, issue 11

Abstract

Certain classes of electromagnetic boundaries satisfying linear and local boundary conditions can be defined in terms of the dispersion equation of waves matched to the boundary. A single plane wave is matched to the boundary when it satisfies the boundary conditions identically. The wave vector of a matched wave is a solution of a dispersion equation characteristic to the boundary. The equation is of the second order, in general. Conditions for the boundary are studied under which the dispersion equation is reduced to one of the first order or to an identity, whence it is satisfied for any wave vector of the plane wave. It is shown that boundaries associated with a dispersion equation of the first order, form a natural generalization of the class of perfect electromagnetic conductor (PEMC) boundaries. As a consequence, the novel class is labeled as that of generalized PEMC (GPEMC) boundaries. In another case, boundaries for which there is no dispersion equation (NDE) for the matched wave (because it is an identity) are labeled as NDE boundaries. They are shown to be special cases of GPEMC boundaries. Reflection of the general plane wave from the GPEMC boundary is considered and an analytic expression for the reflection dyadic is found. Some numerical examples on its application are presented for visualization.

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Keywords

Boundary conditions, electromagnetic theory, ARTIFICIALLY SOFT, HARD SURFACES, PEMC BOUNDARY, REALIZATION, SCATTERING

Other note

DOI

10.1109/TAP.2020.2996780

Citation

Lindell, I V & Sihvola, A 2020, ' Generalization of Perfect Electromagnetic Conductor Boundary ', IEEE Transactions on Antennas and Propagation, vol. 68, no. 11, 9104017, pp. 7406-7413 . https://doi.org/10.1109/TAP.2020.2996780

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https://urn.fi/URN:NBN:fi:aalto-202101271646

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[article-cris] Sähkötekniikan korkeakoulu / ELEC