Effective impedance modeling of metamaterial structures

Dossou, Kokou B.; Poulton, Christopher G.; Botten, Lindsay C.

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Effective impedance modeling of metamaterial structures

Date

2016-08-17

Authors

Dossou, Kokou B.

Poulton, Christopher G.

Botten, Lindsay C.

Abstract

We present methods for retrieving the effective impedance of metamaterials from the Fresnel reflection coefficients at the interface between two semi-infinite media. The derivation involves the projection of modal expansions onto the dominant modes of the two semi-infinite media. It is shown that a number of effective impedance formulas, previously obtained by field averaging techniques, can also be derived from the scattering-based formalism, by an appropriate choice of projection.