基于液晶太赫兹超表面的可重构双功能反射偏振变换器

IF 5.8 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-07 DOI:10.1109/TAP.2025.3537176

Guangsheng Deng;Yongxiang Zhu;Qiang Zhang;Jun Yang;Ying Li;Zhiping Yin

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引用次数: 0

摘要

提出了一种基于液晶（LC）太赫兹（THz）超表面的可重构偏振变换器。该结构在较宽的频率范围内实现从线极化（LP）波到选择性交叉极化波或圆极化（CP）波的转换方面表现出独特的能力。实验结果表明，在318.0 ~ 375.6 GHz的频率范围内，该超表面可以实现从LP波到交叉极化波的无外偏置转换。然而，当施加8 V的饱和偏置电压时，y-LP波可以转换为右手CP （RHCP）反射波。在x-LP入射中也观察到类似的现象，因为x-LP波在反射中被转换为左旋CP波。与以往报道的单一功能超表面极化变换器不同，该设计为实现宽带可重构多功能极化转换提供了一种经济有效的解决方案，为其在太赫兹传感和通信领域的应用开辟了可能性。

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Reconfigurable Dual-Functional Reflective Polarization Converter Based on Liquid Crystal Terahertz Metasurfaces

This communication presents a reconfigurable polarization converter based on the liquid crystal (LC) terahertz (THz) metasurface. The proposed structure shows unique ability in achieving the conversion from linearly polarized (LP) waves to selective cross-polarized waves or circularly polarized (CP) waves within a wide frequency range. Experimental results demonstrate that, within the frequency region of 318.0–375.6 GHz, the metasurface can achieve the conversion from LP waves to cross-polarized waves without external biasing. However, when a saturated biasing voltage of 8 V is applied, the y-LP waves can be converted to right-handed CP (RHCP) reflection waves. Similar phenomenon is observed for x-LP incidence, as the x-LP waves were converted to left-handed CP (LHCP) wave in reflection. Unlike previously reported single-function metasurface polarization converters, the proposed design offers a new approach for achieving wideband reconfigurable multifunctional polarization conversion with a cost-effective solution, opening up possibilities for its application in the field of THz sensing and communication.

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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques