Abstract Modern design of novel materials has been more and more prone to integration, so as to implement multi-functions via compatible design. In this work, a single-layer multispectral metasurface (MM) is designed to achieve multispectral compatibility between microwave and infrared. For microwave, a polarization rotator is designed and analyzed to achieve broadband cross-polarization rotation. And for infrared, Genetic Algorithm (GA) is employed to increase the metallic filling ratio, so as to reduce the infrared emissivity without affecting polarization rotation bandwidth of microwave. As a validation, the single-layer MM is fabricated and measured, and the results show that it has achieved polarization rotation in 3.5–5.8 GHz with an efficiency of over 90%, and meanwhile, the infrared mean emissivity has been reduced to 0.25 in 3–14 μm. More importantly, the single-layer MM and the design method have a promising future in multi-functional integration and multispectral stealth technology.

中文翻译：

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具有宽带微波偏振旋转和低红外发射率的单层多光谱超表面的集成设计

摘要 新型材料的现代设计越来越倾向于集成化，以通过兼容设计实现多功能。在这项工作中，设计了单层多光谱超表面（MM）以实现微波和红外之间的多光谱兼容性。对于微波，设计并分析了偏振旋转器以实现宽带交叉偏振旋转。而对于红外，则采用遗传算法（GA）来增加金属填充率，从而在不影响微波偏振旋转带宽的情况下降低红外发射率。作为验证，制作并测量了单层MM，结果表明它在3.5-5.8 GHz范围内实现了偏振旋转，效率超过90%，同时红外平均发射率降低到0.25 3–14 微米。