可重构电磁超表面及其应用研究进展

Corresponding author: YANG Huanhuan, jianye8901@126.com ; CAO Xiangyu, xiangyucaokdy@163.com

可重构电磁超表面是电磁超表面领域广受关注的热点方向。将可控器件/材料引入超表面设计，可重构超表面的电磁调控性能可以实时灵活动态控制。这极大丰富了超表面的功能，有力推动了超表面由理论设计向工程应用突破。近年来该团队持续关注电磁超表面的最新发展，围绕微波频段的可重构超表面，从理论、技术与应用3个层面开展探索研究。该文首先梳理了国内外在该领域的研究历程，然后从可重构超表面对电磁波的幅度、相位和极化特性调控及其应用等方面着手，综述了该团队在该领域的研究成果，并给出对未来工作的展望。

电磁超表面 / 可重构 / 电磁调控 / 天线 / Abstract: Recently, reconfigurable metasurfaces have attracted intense attention in the field of electromagnetic metasurfaces. Compared with other metasurfaces, reconfigurable metasurfaces that uses steerable devices or materials to control the electromagnetic wave in real time are more versatile and show great promise in engineering applications. Our team has continuously explored advances of reconfigurable metasurfaces and also studied the microwave region from the perspectives of theory, technique and applications. This study reviews the research history of reconfigurable metasurfaces and summarizes some of our previous works, including a study on the amplitude, phase and polarization modulation of electromagnetic waves and their applications. Finally, the study discusses future challenges and possibilities for reconfigurable metasurfaces.

Key words: Electromagnetic metasurface / Reconfigurable / Electromagnetic control / Antenna / Vortex beam 参数集总元件功能材料PIN二极管压控/变容二极管射频MEMS液晶石墨烯砷化镓技术成熟度++00––偏置复杂度––+0+控制数字(1 V)模拟(0～30 V)数字(60 V)模拟模拟模拟成本++000–损耗(微波)––+–––功耗–++0+速度+(ns)+(ns)0(ms)–+线性度0–+0–可用度商用商用多数需定制特殊设备注：+：好；0：中；–：差。杨欢欢, 杨帆, 许慎恒, 等. Ku波段编码式电控超薄周期单元设计与验证[J]. 物理学报, 2016, 65(5): 054102. doi: 10.7498/aps.65.054102

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