Modeling and design of multifunctional nanomaterial based flexible antenna

This paper presents the design of a novel flexible transparent butterfly antenna based on 2D nanomaterial graphene-metal grid, and its performance is simulated. In order to characterize the conductivity of graphene, the CVD-grown graphene is transferred to the ring-shape Teflon substrate. The graphene is then sandwiched between two APC-7 coaxial connectors and the S-parameters under TEM normal incident waves are measured to extract the surface conductivity through transmission matrix, in which the de-embedding process can be avoided. The graphene-metal grid based antenna is fed by a coplanar waveguide (CPW) and the polyethylene terephthalate (PET) is selected as the substrate which needs to be both transparent and flexible. A CPW-fed slot-coupled patch antenna is designed and the performance is simulated. Consequently, the features of the antenna are explored when the antenna is bended at different degree along different axes.