Symmetric Absorbers Realized as Gratings of PEC Cylinders Covered by Ordinary Dielectrics

Abstract

Nearly all known electrically thin perfect absorbers are asymmetric with respect to their two sides and show perfect (rather, nearly perfect) absorption only from one side of the absorbing layer. Moreover, the vast majority of the designs contain a ground plane, which makes the transmission coefficient zero at all relevant frequencies. Here, we introduce a… (More)

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