Frequency reconfigurable antenna based on commercial graphene nanoplatelets

A voltage controlled frequency reconfigurable antenna is presented. The reconfigurable antenna comprises of a microstrip patch antenna connected to two grounded stubs via commercial graphene nanoplatelets. An applied bias voltage varies the resistance of graphene. The lengths and widths of the stubs are optimized to cause a change in reactance because of a change in graphene resistance. A change in the reactance at the radiating edge of the patch antenna varies its resonant frequency. Commercial graphene nanoplatelets bear higher sheet resistance. The complete structure is designed to provide maximum frequency shift with minimum mismatch. The optimized simulated design is fabricated and comparable measured results are obtained. The resulting measured frequency shift is 310 MHz at a frequency of 5GHz.