Infrared stealth and the flexible metasurface of radar backscattering suppression

Based on the principle of electromagnetic wave cancellation, this paper proposes a coded metasurface which can suppress both radar backscattering and infrared radiation. Two high duty ratio superstructures with two different structures are designed and coded units are worked out on the basis of this. The experimental results indicate that the metasurface can effectively suppress the backscattering of electromagnetic waves in the 8.6–16.3 GHz band, and the average emissivity at infrared atmospheric window is 0.43. At the same time, it has good heat insulation performance, which can effectively suppress infrared radiation. In addition, the metasurface has light mass and flexibility. Therefore, the metasurface has a good prospect for application in the multispectral stealth field.