Abstract
In this manuscript, plasmonic nano patch antenna on the graphene material is designed and analyzed. The conductivity of the graphene material is modeled using Kubo conductivity formula and it is tuned using chemical potential of graphene. Further, analysis of Drude dispersive model for the graphene matrial exhibits negative real permittivity which is the required criterion for the plasmonic resonance. The designed graphene nano patch antenna provides a gain of 3.52 dB at 30 THz frequency which is suitable for terahertz communication. It is demonstrated that the graphene nano patch antenna resonates at multiple frequencies by varying the chemical potential and three resonating frequencies 30, 115, 176 THz with good characteristics are observed at 1.3 eV chemical potential. The gain of the graphene nano patch antenna is enhanced approximately three times by changing the shape of the patch from square to L-shape.
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