用于太赫兹波束转向的全电驱动液晶可重构智能表面

IF 3.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Terahertz Science and Technology Pub Date : 2024-07-30 DOI:10.1109/TTHZ.2024.3435506

Lu Xu;Kaiwen Li;Guozhen Zhang;Jun Yang;Zhiping Yin;Mincheng Zhong;Hongbo Lu;Guangsheng Deng;Ying Li

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引用次数: 0

摘要

展示了一种基于液晶（LC）的快速响应可重构智能表面（RIS），用于太赫兹波束转向。通过用像素化光栅电极取代传统可重构元表面的金属背板，实现了线控元表面阵列。值得注意的是，RIS 采用了全状态偏置电压控制，促进了状态之间的加速转换。这大大提高了拟议 LC 器件的响应速度。仿真和测试结果一致表明，RIS 在 415 GHz 的最佳工作频率下具有出色的光束转向能力。具体来说，拟议的 RIS 可实现 20° 至 60° 的广角光束扫描。我们的工作有望在 6G 通信、涡旋光束生成和成像领域得到潜在应用。

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Fully Electrically Driven Liquid Crystal Reconfigurable Intelligent Surface for Terahertz Beam Steering

A rapid response reconfigurable intelligent surface (RIS) based on liquid crystals (LCs) is demonstrated for terahertz beam steering. A wire-controlled metasurface array is achieved by substituting the metal backplane of conventional reconfigurable metasurfaces with pixelated grating electrodes. Notably, the RIS employs bias voltage control across its full states, facilitating accelerated transitions between them. It significantly enhances the response speed of the proposed LC device. Simulation and test results consistently indicate that the RIS exhibits outstanding beam steering capability at the optimal operating frequency of 415 GHz. Specifically, the proposed RIS realizes wide-angle beam scanning from 20° to 60°. Our work is expected to have potential applications in 6G communications, vortex beam generation, and imaging.

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来源期刊

IEEE Transactions on Terahertz Science and Technology ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

7.10

自引率

9.40%

发文量

102

期刊介绍： IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.