Mechanical Reconfigurable Phase Modulation in Aperture-Shared Articulated-Screw Metasurface for Spin-Decoupled Wavefront Shaping

IF 4.6 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-09-01 Epub Date: 2026-07-20 DOI:10.1109/LAWP.2026.3715172

Xinmin Lian;Jianfeng Zhu;Quan Xue

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引用次数: 0

Abstract

This letter presents a new mechanically reconfigurable reflective metasurface (MS) that enables independent wavefront control of left-hand circularly polarized (LHCP) and right-hand circularly polarized (RHCP) waves and dynamic switching between distinct functions. The design uses a single type of screw-adjustable ridge waveguide unit cell, offering two mechanical degrees of freedom: vertical displacement for continuous dynamic phase tuning and in-plane rotation for Pancharatnam–Berry phase. This dual-control mechanism achieves full 2π phase coverage with continuous phase adjustability and full decoupling of phase profiles for the two circular polarizations. The MS unit cell operates from 9.7 GHz to 10.3 GHz with stable reflection performance. As the design is a metal-only one without dielectric loss, the reflection loss is low. By re-adjusting the screw matrix, the same aperture can be reconfigured to switch between entirely different functionalities. We experimentally validate this concept with a single MS configured as an orbital angular momentum generator (l = 1 for LHCP and l = 2 for RHCP) and, after reconfiguration, as a dual-focus lens focusing at different spatial positions for LHCP and RHCP, respectively. Both states, characterized in the microwave band, show stable performance and excellent agreement with simulations. This work offers a versatile platform for spin-decoupled, continuously tunable wave manipulation tailored for mission-level reconfigurable microwave systems.

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用于自旋解耦波前整形的孔径共享关节螺旋超表面的机械可重构相位调制

这封信提出了一种新的机械可重构反射超表面（MS），它可以独立控制左圆极化（LHCP）和右圆极化（RHCP）波的波前，并在不同功能之间动态切换。该设计采用单一类型的螺旋可调山脊波导单元，提供两个机械自由度：垂直位移用于连续动态相位调谐，平面内旋转用于Pancharatnam-Berry相位。这种双控制机制实现了全2π相位覆盖，具有连续相位可调性和两个圆极化的相位曲线完全解耦。在9.7 GHz到10.3 GHz波段工作，具有稳定的反射性能。由于该设计为纯金属结构，无介电损耗，因此反射损耗低。通过重新调整螺旋矩阵，相同的孔径可以重新配置，以在完全不同的功能之间切换。我们通过实验验证了这一概念，将单个MS配置为轨道角动量发生器（LHCP为l = 1， RHCP为l = 2），并将其重新配置为双焦点透镜，分别聚焦在LHCP和RHCP的不同空间位置。这两种状态在微波波段都表现出稳定的性能，与仿真结果非常吻合。这项工作为自旋解耦、连续可调波操作提供了一个通用平台，为任务级可重构微波系统量身定制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.