▎ 摘　　要

NOVELTY - The device has a bottom layer metal (1), a middle medium layer (2) and a top layer graphene (3) that are overlapped in geometric center. Multiple unit structures are periodically arranged, where a side length of the unit structure is 30 to 40 microns, a thickness of the bottom layer metal is 0.2 to 50m microns, a thickness of the middle dielectric layer is 30 to 34 microns. An end point of an elliptical long shaft is overlapped with a center of the unit structure. Another end point of the elliptical long shaft is overlapped with a diagonal of the unit structure. USE - Graphene based double-broadband adjustable wave absorbing device. ADVANTAGE - The device is simple and compact in structure, easy to manufacture, and independent of polarization, has and has high absorption rate when incident at large angle, and can realize ultra-strong absorption of two broadbands. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene based double-broadband adjustable wave absorbing device. Bottom layer metal (1) Middle medium layer (2) Top layer graphene (3)