▎ 摘　　要

NOVELTY - The modulator has a frequency selective surface (4) overlapped with a direct current power supply (2). A center part of a metal patch (41) is embedded into a graphene film (42). Upper and lower sides of the metal patch are connected with a metal branch (43). A horizontal metal thin wire (44) is connected to an electrode. An anode load of the power supply is connected with an upper part of the metal thin wire. The direct current power supply supplies voltage to the load indirectly to control amplitude modulation of a modulator main body varies between high reflection and low reflection. USE - Graphene artificial ultra-surface wave amplitude modulator for electromagnetic stealth and electro-optical switching device. ADVANTAGE - The modulator is simple in structure, utilizes high conductivity of a reflecting plate so as to reduce electromagnetic wave transmission of a microwave absorbing device. The metal patch is embedded into the graphene film to increase bandwidth and amplitude modulation of a reflected wave. DETAILED DESCRIPTION - The metal patch is selected as a rectangular metal ring. The metal branch is selected as a rectangular metal branch. The medium substrate is provided with a first medium layer (31) and a second medium layer (32). The first medium layer is formed as a man-sized thickness of a medium and the second medium layer is formed as a high-doped dielectric medium. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a graphene artificial ultra-surface wave amplitude modulator. Direct current power supply (2) Frequency selective surface (4) Medium layers (31,32) Metal patch (41) Graphene film (42) Metal branch (43) Horizontal metal thin wire (44)