▎ 摘　　要

NOVELTY - The device has a dielectric layer that is provided with a laminated first medium plate (3), a second medium plate (4) and a third medium plate (5), such that the first medium plate is made of insulating material. The second medium plate is made of semiconductor material, and the lower surface of the third medium plate is printed with a bottom plate (6). A graphene film (2) and the second medium plate are connected with direct current power supply (7) for adjusting the surface conductivity of the graphene film. USE - Graphene-based film absorbing rate adjustable wideband electromagnetic wave absorbing device for parabolic antenna. ADVANTAGE - The device is provided with low cost, good practicability. The aircraft surface is ensured with intermittent wave-absorbing property. DESCRIPTION OF DRAWING(S) - The drawing shows the perspective view of the adjustable wideband electromagnetic wave absorbing device. Graphene film (2) Medium plates (3,4,5) Bottom plate (6) Direct current power supply (7) Square patch (111)