Abstract
In this paper, a graphene-based spiral nanoantenna is proposed and investigated for intrabody communication at the Terahertz (THz) frequency band (0.1-10 THz). A spiral antenna configuration is adopted as it possesses various degrees of freedom and exhibits geometries that facilitate miniaturization, which is crucial for practical deployment of nanobiosensors. Graphene is used in the design of the spiral nanoantenna since it results in the excitation of plasmonic eigenmodes, which lead to strong resonances in the lower THz band. Full wave simulation of the proposed spiral nanoantenna is carried out by COMSOL Multiphysics, to obtain the nanoantenna parameters. The desirable features attained, along with its compact size and circularly polarized characteristic, make the proposed spiral antenna design suitable for intrabody nano-communication applications.
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