Simultaneously Intelligent Sensing and Beamforming Based on an Adaptive Information Metasurface

Jiang, Rui Zhe; Ma, Qian; Gu, Ze; Liang, Jing Cheng; Xiao, Qiang; Cheng, Qiang; Cui, Tie Jun

doi:10.1002/advs.202306181

Cited by 6 publications

(1 citation statement)

References 60 publications

(55 reference statements)

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“…Designs incorporating active devices encounter limitations in large-scale communication systems due to their high energy consumption. Therefore, while these metasurfaces have demonstrated impressive functionalities [26][27][28][29][30][31], they face limitations in terms of flexibility, integrability, power consumption, and cost in the context of 6G communications. Especially for most communication scenarios, the cost and power consumption are key indicators of applications.…”

Section: Introductionmentioning

confidence: 99%

Dual-Polarized Reconfigurable Manipulation Based on Flexible-Printed Intelligent Reflection Surface

Jia,

Tan,

Dong

et al. 2024

Photonics

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In the background of 6G communication requiring a high data rate and energy efficiency, global coverage and connectivity, as well as high reliability and low latency, most existing reconfigurable metasurfaces face limitations in flexibility, integrability, energy consumption, and cost. This paper proposes a dual-polarized intelligent reflection surface (IRS) based on a paper-based flexible substrate as a solution. The proposed design uniquely enables the independent control of two orthogonally polarized electromagnetic waves to achieve customized scattering effects. Compared to conventional reconfigurable intelligent surfaces using PCB technology and active components, this design utilizes paper as the substrate material combined with conductive ink and silver ink, significantly reducing production costs and process complexity. The manufacturing cost is only about one-tenth of the traditional PCB solutions. This approach is not only cost-effective but also excels in both flexibility and portability. These attributes signify its suitability for a broader range of potential applications, encompassing areas where traditional RIS may be impractical due to cost, rigidity, or complexity constraints. By drawing rotationally symmetric small metal block structures on paper using silver ink, four structures are designed that achieve a phase difference of 90 degrees for both x-polarized and y-polarized wave incidences at the resonant frequency of 4.5754 GHz, realizing independent phase modulation. The dual-polarized flexible 2-bit intelligent reflection surface consists of 20×20 unit cells, and six different coding patterns are designed for single-beam and dual-beam design based on different scattering angles. The experimental results show that this polarization-independent flexible 2-bit intelligent reflection surface structure successfully allows independent control of two orthogonally polarized electromagnetic waves, enabling customized scattering effects. The experimental results are highly consistent with the simulation results. The independent control of two orthogonal polarized electromagnetic waves is a key feature of our design, enabling more flexible and effective signal coverage in complex urban environments. This precise control over polarization not only enhances the adaptability of the system but also offers practical solutions for real-world applications, particularly in meeting the growing demands of urban communication. The proposed metasurface based on paper-based flexible substrate is low-cost and highly portable, and the polarization independence provides more degrees of freedom for the metasurface, which is beneficial for more precise and efficient beam control and can be applied in the field of communication, especially 6G communication and IRS wireless communication. In addition, it also has broad application prospects in radar systems and remote sensing applications.

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Section: Introductionmentioning

confidence: 99%

Dual-Polarized Reconfigurable Manipulation Based on Flexible-Printed Intelligent Reflection Surface

Jia,

Tan,

Dong

et al. 2024

Photonics

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Evolutionary Games‐Assisted Synchronization Metasurface for Simultaneous Multisource Invisibility Cloaking

Huang,

Zheng,

et al. 2024

Adv Funct Materials

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The realization of a metasurface cloak for the simultaneous invisibility of multiple sources presents a long‐standing scientific challenge. Ideally, for the establishment of a simultaneous multisource invisibility cloak, the metasurface must provide a wide phase coverage and angular stability in a single architecture, especially for broadband, wide‐angle, and even omnidirectional scenarios. However, achieving this goal has proven to be elusive thus far. Current approaches for implementing metasurface‐based invisibility cloak involve both active and passive metasurface. These approaches often rely on phase‐compensation mechanisms, which inevitably encounter issues related to limited incidence angles or narrow working bands. Here, a novel paradigm of synchronization metasurface optimized through an evolution‐optimization strategy, enabling the realization of simultaneous multisource invisibility cloaking, is proposed. The underlying physics of the synchronization metasurface relies on an evolution‐optimization strategy (an evolutionary game algorithm), which is used to get rid of the entanglement between incident directions, frequencies, and metasurface phase gradients. Consequently, the synchronization metasurface is capable of manipulating simultaneous incoming waves at any angle over a wide range (cloak). In experimental validation, the synchronization metasurface demonstrates an impressive capability to cloak both single and simultaneous double sources in any direction, highly resembling background fields.

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3D Intelligent Cloaked Vehicle Equipped with Thousand‐Level Reconfigurable Full‐Polarization Metasurfaces

Wang,

Qian,

Lin

et al. 2024

Advanced Materials

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A crucial aspect in shielding a variety of advanced electronic devices from electromagnetic detection involves controlling the flow of electromagnetic waves, akin to invisibility cloaks. Decades ago, the exploration of transformation optics heralded the dawn of modern invisibility cloaks, which has stimulated immense interest across various physical scenarios. However, most prior research has been simplified to low‐dimensional and stationary hidden objects, limiting their practical applicability in a dynamically changing world. In this study, we developed a three‐dimensional (3D) large‐scale intelligent cloak capable of remaining undetectable even in non‐stationary conditions. By employing thousand‐level reconfigurable full‐polarization metasurfaces, we have achieved an exceptionally high degree of freedom in sculpting the scattering waves as desired. Serving as the core computational unit, a hybrid inverse design enables the cloaked vehicle to respond in real‐time, with a rapid reaction time of just 70 ms. In our experiments, we integrated the cloaked vehicle with a perception‐decision‐control‐execution system and evaluated its performance under random static positions and dynamic travelling trajectories, achieving a background scattering matching degree of up to 93.3%. These findings establish a general paradigm for the next generation of intelligent meta‐devices in real‐world settings, potentially paving the way for an era of “Electromagnetic Internet of Things.”This article is protected by copyright. All rights reserved

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Simultaneously Intelligent Sensing and Beamforming Based on an Adaptive Information Metasurface

Cited by 6 publications

References 60 publications

Dual-Polarized Reconfigurable Manipulation Based on Flexible-Printed Intelligent Reflection Surface

Dual-Polarized Reconfigurable Manipulation Based on Flexible-Printed Intelligent Reflection Surface

Evolutionary Games‐Assisted Synchronization Metasurface for Simultaneous Multisource Invisibility Cloaking

3D Intelligent Cloaked Vehicle Equipped with Thousand‐Level Reconfigurable Full‐Polarization Metasurfaces

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