Zhu Zhibiao, Li Yongfeng, Zhang Jieqiu, Wang Jiafu, Wan Weipeng, Zheng Lin, Feng Mingde, Chen Hongya, Qu Shaobo
Opt Express. 2021 Feb 1;29(3):4219-4229. doi: 10.1364/OE.416266.
The traditional frequency selective surface (FSS) needs further improvement with the development of stealth technology, and the design of multifunctional FSSs is essential. In this letter, an active absorptive FSS (AFSS) has been designed based on the absorption structure of the spoof surface plasmon polariton (SSPP) and the switching activity of the active FSS. The active FSS embedded with PIN diodes realizes the shift of two transmission/reflection frequency bands by controlling the bias voltage of the feed network, which switches from one band-pass response (at around 3.06 GHz) to the other (at around 4.34 GHz). And when one of the transmission windows switches to the other, the original transmission window closes. The upper plasmonic structure achieves a continuous and efficient absorption band from 6.31 to 8.34 GHz. A sample was also fabricated and carried out to verify the numerical simulation, and the experimental and simulation results are consistent. This work provides new ideas for the design of active AFSS and promotes its application in common aperture radome, antenna isolation, and electromagnetic shielding.
随着隐身技术的发展，传统频率选择表面（FSS）需要进一步改进，多功能FSS的设计至关重要。在本文中，基于类表面等离激元极化子（SSPP）的吸收结构和有源FSS的开关特性，设计了一种有源吸收型FSS（AFSS）。嵌入PIN二极管的有源FSS通过控制馈电网络的偏置电压实现了两个传输/反射频段的切换，从一个带通响应（约3.06 GHz）切换到另一个（约4.34 GHz）。当其中一个传输窗口切换到另一个时，原来的传输窗口关闭。上层等离子体结构在6.31至8.34 GHz范围内实现了连续高效的吸收带。还制作了一个样品进行数值模拟验证，实验结果与模拟结果一致。这项工作为有源AFSS的设计提供了新思路，并推动了其在共形孔径天线罩、天线隔离和电磁屏蔽中的应用。
