LAUSR

A reconfigurable graphene antenna is designed and numerically analyzed. The antenna structure contains a radiating graphene patch and non-radiating graphene ring. The operating frequency of antenna can be tuned by applying the gate voltage on the graphene patch. This proximity coupled antenna structure operates with TM_22 mode. In this configuration, the field is distributed in the form of horizontal magnetic dipole. The application of gate voltage at the periphery of graphene ring converts the field configuration to the form of vertical electric dipole. Thus, the mode of operation of antenna is changed to TM_01. Consequently, the radiation pattern of antenna can be steered in different directions as per the location of applied gate voltage at the periphery of graphene ring.