Graphene-based Dual-band Magnitude Tunable Filter

In this paper, a dynamically magnitude tunable dual-band filter using graphene loaded dual-band resonators is presented. The dual-band resonator is composed of a dual-mode centrally shorted split ring resonators and a pair of graphene flake pads. By applying biased voltage to the two sides of graphene flake pad, the transmission magnitude of two passbands can be independently tuned gradually, while the center frequencies of two passbands can still keep unchanged.