用于全空间电磁波前操纵的可重构传输反射集成编码超表面,Advanced Optical Materials

当前位置： X-MOL 学术 › Adv. Opt. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

用于全空间电磁波前操纵的可重构传输反射集成编码超表面
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2023-08-10 , DOI: 10.1002/adom.202301326
Tao Yin ₁ , Jian Ren ₁ , Bing Zhang ₁ , Puchu Li ₁ , Yuchen Luan ₂ , Yingzeng Yin ₁

Affiliation

可重构超表面展现出灵活控制电磁（EM）波的能力，全空间定制电磁波前的实时操纵是人们日益关注的领域之一。本文提出了一种可重构传输反射集成（TRI）编码超表面，结合了可重构传输和反射超表面的功能。超粒子由集成了三个正-本征-负（PIN）二极管的多层结构组成。通过使用现场可编程门阵列 (FPGA) 的直流 (DC) 偏置电压动态控制这些二极管的状态，超粒子实现了传输模式和反射模式之间的切换，并独立调制相位响应。超表面可以通过阵列编码来操纵反射和透射波前，从而实现电磁波前的全空间控制。此外，本文还演示了在该超表面上实现的各种功能，包括模式切换、光束扫描、整形、聚焦和空间散射。作为概念证明，我们制作并实验了超表面阵列原型。模拟和测量结果非常吻合，证实了可重构 TRI 超表面在全空间操纵电磁波的有效能力。所提出的可重构TRI编码超表面为全空间域灵活波前控制打开了大门，在微波成像、电磁隐身和智能天线罩等领域具有广阔的应用前景。

"点击查看英文标题和摘要"

Reconfigurable Transmission-Reflection-Integrated Coding Metasurface for Full-Space Electromagnetic Wavefront Manipulation

Reconfigurable metasurfaces exhibit the capability of flexibly controlling electromagnetic (EM) waves, and the real-time manipulation of tailored EM wavefront in full-space is one of the steadily increasing interests. This paper proposes a reconfigurable transmission-reflection-integrated (TRI) coding metasurface, combining the functionalities of reconfigurable transmission and reflection metasurfaces. The meta-particle is composed of a multilayer structure integrated with three positive-intrinsic-negative (PIN) diodes. By dynamically controlling the states of these diodes with the direct-current (DC) bias voltage from a field-programmable-gate-array (FPGA), meta-particles achieve switching between transmission mode and reflection mode and independently modulate phase response. Metasurfaces can manipulate the reflected and transmitted wavefront by array encoding, allowing for full-space control of the EM wavefront. Additionally, this paper demonstrates various functions implemented on this metasurface, including mode switching, beam scanning, shaping, focusing, and spatial scattering. As a proof of concept, a metasurface array prototype is fabricated and experimented. The simulation and measurement results agree well, confirming the effective ability of reconfigurable TRI metasurfaces to manipulate EM waves throughout full-space. The proposed reconfigurable TRI coding metasurface opens the door for flexible wavefront control in the full-space domain, with broad application prospects in areas such as microwave imaging, EM stealth, and smart radomes.

更新日期：2023-08-10

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南