期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到4篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Ambient-energy-driven space-time-coding metasurface for spacefrequency-division multiplexing wireless communications 认领 引用
1
作者 Han Wei Tian Chao Song +3 位作者 Dong Jie Wang Qian Zhu Tie Jun Cui Wei Xiang Jiang 《Opto-Electronic Advances》 SCIE EI CAS CSCD 2026年第2期12-26,共15页
Programmable metasurfaces have shown exceptional potentials in wireless communications due to their capability to manipulate electromagnetic(EM)waves dynamically and flexibly.However,the large-scale application and fl... Programmable metasurfaces have shown exceptional potentials in wireless communications due to their capability to manipulate electromagnetic(EM)waves dynamically and flexibly.However,the large-scale application and flexible deployment of programmable metasurfaces still face challenges of high communication capacity requirements and stringent energy constraints.Here,we report an ambient-energy-driven space-time-coding metasurface to address these issues.On one hand,the metasurface can achieve efficient space-frequency-division multiplexing manipulations by dynamically controlling multiple frequencies and the spatial propagation directions of reflection EM waves.On the other hand,the shared-aperture ambient solar energy harvesting capability and low power consumption characteristic of the metasurface enable it to be self-powered without relying on any external power supply.To demonstrate these remarkable features,a four-channel wireless communication system prototype is built using the programmable metasurface.Experimental results confirm that four distinct images can be transmitted to four user terminals simultaneously,independently,and in real time with remarkably low energy consumption per bit.Such innovative metasurface provides a simple and effective approach for integrating ambient energy harvesting,multidimensional microwave manipulation,and direct information modulation on a single physical platform,which will advance the wireless communications in cost-effectiveness,enhanced capacity,energy efficiency,and environmental friendliness. 展开更多
关键词 programmable metasurfaces space-time-coding metasurfaces ambient energy harvesting self-powered multiplexing wireless communications energy-efficient
暂未订购 下载PDF
Enhanced real-time intelligent sensing with privacy protection by a compact space-time-coding metasurface antenna 认领 引用
2
作者 Huiming YAO Baiying TAISHI +3 位作者 Jiaxin LI Jianchun XU Kai HUANG Ke BI 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2025年第10期183-189,共7页
Intelligent devices have significantly improved our daily lives,but have engendered security and privacy concerns.To mitigate these issues,a real-time intelligent sensing system with privacy protection is proposed bas... Intelligent devices have significantly improved our daily lives,but have engendered security and privacy concerns.To mitigate these issues,a real-time intelligent sensing system with privacy protection is proposed based on a space-timecoding metasurface antenna.The employed metasurface antenna has a low profile,fast programmability,and flexible wavefront reconfiguration capability,enabling single-beam steering across a±60°range with 15°resolution over distances of 0.6-2 m.Through rapid beam steering,timely signal processing,and synchronization optimization,the system achieves precise and realtime target tracking with an ultralow latency of 0.01 s.Crucially,the system is configured to solely detect the presence and movement of individuals without capturing visual images,thus avoiding the privacy risks inherent in video surveillance.This research holds great potential for advancement in smart homes,healthcare systems,and cognitive radars,providing a viable solution to alleviate visual privacy concerns. 展开更多
关键词 intelligent sensing metasurface antenna privacy protection space-time-coding
暂未订购 下载PDF
Simultaneous wireless information and power transfer transmitting architecture based on asynchronous space-time-coding digital metasurface[Invited] 认领 引用 被引量：3
3
作者 祁振杰 戴俊彦 +8 位作者 王思然 周群焰 唐万恺 王凯岑 张澎 刘硕 李龙 程强 崔铁军 《Chinese Optics Letters》 SCIE EI CAS CSCD 2023年第8期17-22,共6页
Simultaneous wireless information and power transfer(SWIPT)architecture is commonly applied in wireless sensors or Internet of Things(IoT)devices,providing both wireless power sources and communication channels.Howeve... Simultaneous wireless information and power transfer(SWIPT)architecture is commonly applied in wireless sensors or Internet of Things(IoT)devices,providing both wireless power sources and communication channels.However,the traditional SWIPT transmitter usually suffers from cross-talk distortion caused by the high peak-to-average power ratio of the input signal and the reduction of power amplifier efficiency.This paper proposes a SWIPT transmitting architecture based on an asynchronous space-time-coding digital metasurface(ASTCM).High-efficiency simultaneous transfer of information and power is achieved via energy distribution and information processing of the wireless monophonic signal reflected from the metasurface.We demonstrate the feasibility of the proposed method through theoretical derivations and experimental verification,which is therefore believed to have great potential in wireless communications and the IoT devices. 展开更多
关键词 simultaneous wireless information and power transfer asynchronous space-time-coding digital metasurface quadrature phase-shift keying modulation
暂未订购 下载PDF
Space-Frequency Multiplexing Wireless Communication Based on a Single-Layer Dual-Band Programmable Metasurface 认领 引用
4
作者 Yining Zheng Lei Zhang +5 位作者 Bingbing Zhu Xiaoqing Chen Haotian Shi Shi He Shuo Liu Tiejun Cui 《Electromagnetic Science》 CSCD 2026年第1期1-12,共12页
Programmable metasurfaces(PMs)have significantly advanced electromagnetic(EM)wave manipulation by enabling real-time and digital reconfigurability.However,the current PM designs encounter challenges in achieving indep... Programmable metasurfaces(PMs)have significantly advanced electromagnetic(EM)wave manipulation by enabling real-time and digital reconfigurability.However,the current PM designs encounter challenges in achieving independent multi-band controls while keeping structural simplicity.Here,we propose a novel single-layer,dual-band PM based on staggered subwavelength structures.The design enables simultaneous and independent 1-bit phase controls in both the X-and Ku-bands within a simplified single-layer architecture.Both simulations and experimental results verify that the proposed PM exhibits minimal inter-band coupling.A prototype of PM is fabricated,demonstrating dual-band EM wave manipulation in both spatial and temporal domains through space-coding and space-time-coding strategies.We construct a space-frequency multiplexing wireless communication system using the proposed PM.This system is capable of establishing concurrent dual-band wireless links between distributed transceivers.The system enables selective disconnection of one frequency band while maintaining reliable connectivity on the other,as validated by the indoor experiments.The proposed design offers promising potential for next-generation reconfigurable wireless communication and radar systems that require simultaneous multi-frequency operations. 展开更多
关键词 Programmable metasurfaces Dual-band Space-frequency multiplexing Space-time-coding
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈