A Double Layer Coupled Broadband Absorbing Metamaterial with Optical Transparency Characteristics

This paper presents an optical transparent Metamaterial with low profile and broadband microwave absorption. The X band broadband microwave absorption is realized by designing a ring indium tin oxide (ITO) resonant unit. Furthermore, through asymmetric optimization design of a double-layer structure, ultra-wideband microwave absorption between 5.2 GHz and 18 GHz was achieved. The most crucial thing is that the overall thickness of the structure is only 6 mm, and the selected materials all have good optical transparent properties.