Graphene-based nano-patch antenna for terahertz radiation

The scattering of terahertz radiation on a graphene-based nano-patch antenna is numerically analyzed. The extinction cross section of the nano-antenna supported by silicon and silicon dioxide substrates of different thickness are calculated. Scattering resonances in the terahertz band are identified as Fabry–Perot resonances of surface plasmon polaritons supported by the graphene film. A strong tunability of the antenna resonances via electrostatic bias is numerically demonstrated, opening perspectives to design tunable graphene-based nano-antennas. These antennas are envisaged to enable wireless communications at the nanoscale.

► Scattering of terahertz radiation on a graphene-based nano-patch antenna is numerically analyzed.
► Scattering resonances are identified.
► Fabry-Perot model of the plasmon polariton interaction with graphene-based antenna is introduced.
► The prospect of tunable graphene-based nano-antenna for wireless communication is discussed.