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An effective method for for controlling the absorption frequency of terahertz (THz) absorber based on graphene is presented in this paper. The absorber consists of graphene-dielectric stack with a resistive sheet on top layer and a perfect electric conductor placed at the bottom layer. A circuit model for graphene absorber was introduced to analyze the mechanism of the absorber. By changing the surface...
A design of absorber using two-dimensional (2-D) periodic arrays of double-square split loops and resistive strips printed on grounded dielectric substrate is investigated in this letter. Unlike the traditional structure, graphene sheets are proposed for thin absorbing structures at microwave frequencies. The analysis of absorption properties is based on the dynamic model of graphene, which takes...
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