In this paper, an optically transparent coding metasurface is proposed, which can not only reduce the backscattering in ultra-wideband, but also modulate the infrared characteristics of the metasurface by modulating the electrification voltage, so that it can simulate as a false target in both microwave and infrared bands, to achieve the purpose of hiding the real target. In this scheme, two kinds of flexible ITO-PVC-ITO meta-atoms with high optical transparency are designed. The optimal meta-atoms arrangement is obtained by optimizing the relationship between an arbitrary coding arrangement of meta-atoms and their far-field pattern. And then, different types of IR features are obtained by voltage regulation of the electrothermal modules on the metasurface. The simulation and test results show that the proposed scheme can achieve RCS reduction for more than 10 dB in the broadband range (8–19 GHz), and the IR features are changed with voltage variation. The experimental results are consistent with the simulation results, indicating that the scheme has practical application value of multi-functional stealth and camouflage technology.

本文提出了一种光学透明的编码超表面，它不仅可以减少超宽带的后向散射，而且还可以通过调节带电电压来调节超表面的红外特性，从而可以将其模拟为两个目标中的虚假目标。微波和红外波段，达到隐藏真实目标的目的。在该方案中，设计了两种具有高光学透明性的柔性ITO-PVC-ITO偏原子。通过优化元原子的任意编码排列与其远场模式之间的关系，可以获得最佳的元原子排列。然后，通过调节超表面上电热模块的电压来获得不同类型的IR特征。仿真和测试结果表明，该方案可以在宽带范围（8–19 GHz）内实现RCS降低10 dB以上，并且IR特性随电压变化而变化。实验结果与仿真结果吻合，表明该方案具有多功能隐身和伪装技术的实际应用价值。