▎ 摘　　要

NOVELTY - The cover comprises a first resonator (4) and a second resonator (5) fixed between the bottom medium substrate (1) and the middle medium substrate (2). A third resonator is fixed between middle layer medium substrate and top medium substrate (3). The first resonator couples with the second resonator. The material of third resonator is graphene. The direct current voltage is added between third resonator and top medium substrate for adjusting the Fermi level of graphene, where the material of first resonator and second resonator is metal material, and the metal material is gold, silver, copper or aluminum, or alloy containing gold, silver, copper or aluminum, and the material of bottom medium substrate, middle medium substrate and top medium substrate is organic glass. USE - Used as antenna cover. ADVANTAGE - The cover: is simple in structure and easy to be integrated; realizes the continuous and adjustable electromagnetic wave transmission; transmits and absorbs electromagnetic signal of the fixed frequency band selectively; and is excellent for electromagnetic protection. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an electromagnetic wave transmission continuous adjusting method using antenna cover. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of each component of the unit structure of antenna cover. 1Bottom medium substrate 2Middle medium substrate 3Top medium substrate 4First resonator 5Second resonator