Recent developments of tunable microwave absorbers using graphene

Recent Developments of Tunable Microwave absorber structure utilizing graphene film is reviewed in this paper. Based on our previous works, the basic principle of the design and the measurement of the graphene absorber are overviewed. Meanwhile, the tunability of the absorber, both in absorption magnitude and absorption frequency is analyzed. Several different methods are theoretically presented and experimentally validated. Thus, a multi-dimensional tuning of microwave absorber using graphene is fully demonstrated.