▎ 摘　　要

In this manuscript, we present results regarding frequency multiplication of microwave signals by means of graphene-based coupled coplanar line multipliers. In deep contrast with all multipliers where the power of higher harmonics decrease with frequency, in this graphene-based device the output power of higher harmonics increase with frequency due to the special configuration of the circuit which assures a constant loss beyond 30 GHz, while the losses in graphene decrease with frequency. (C) 2013 AIP Publishing LLC.