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Abstract

In this paper, a reconfigurable THz patch antenna based on graphene is presented, whose resonance frequency can be changed depending on the applied voltage. The antenna is located over an array of split ring resonators (SRR) also made of graphene; this array actually behaves like a metamaterial. By exploiting the possibility of changing the chemical potential of graphene, independently for the patch and for the array, both bandwidth and radiation properties are optimized. The radiation properties of the proposed layout are then enhanced by introducing an extended hemispherical lens.