Results 21 to 30 of about 1,022 (205)

Time-Modulated Transmissive Programmable Metasurface for Low Sidelobe Beam Scanning. [PDF]

Research (Wash D C), 2022
Programmable metasurfaces have great potential for the implementation of low-complexity and low-cost phased arrays. Due to the difficulty of multiple-bit phase control, conventional programmable metasurfaces suffer a relatively high sidelobe level (SLL).
Bai X, Zhang F, Sun L, Cao A, Zhang J, He C, Liu L, Yao J, Zhu W.   +8 more
europepmc   +2 more sources

Multimode OAM beam generation through 1-bit programmable metasurface antenna. [PDF]

Sci Rep, 2023
modern wireless communication, the orbital angular momentum (OAM) beam is considered as an important technology. Some considerable efforts have been devoted to using this technology for channel capacity enhancement as much as possible.
Nadi M, Sedighy SH, Cheldavi A.
europepmc   +2 more sources

XOR-Logic Phase Coding Programmable Metasurface for Low Power-Consumption Systems. [PDF]

Adv Sci (Weinh)
Programmability greatly enhances the degree of freedom to manipulate electromagnetic (EM) waves dynamically and lays crucial foundation for intelligent applications of metasurfaces.
Zhu R, Sui S, Dai J, Zhou Q, Jia Y, Han Y, Li Y, Wang S, Cheng Q, Wang J, Cui TJ.   +10 more
europepmc   +2 more sources

Physics‐Informed Inverse Design of Programmable Metasurfaces

Advanced Science
AbstractEmerging reconfigurable metasurfaces offer various possibilities for programmatically manipulating electromagnetic waves across spatial, spectral, and temporal domains, showcasing great potential for enhancing terahertz applications. However, they are hindered by limited tunability, particularly evident in relatively small phase tuning over 270°
Yucheng Xu, Jia‐Qi Yang, Kebin Fan, Sheng Wang, Jingbo Wu, Caihong Zhang, De‐Chuan Zhan, Willie J. Padilla, Biaobing Jin, Jian Chen, Peiheng Wu   +10 more
openaire   +3 more sources

On the Use of Programmable Metasurfaces in Vehicular Networks [PDF]

2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2021
Metasurface-based intelligent reflecting surfaces constitute a revolutionary technology which can serve the purpose of alleviating the blockage problem in mmwave communication systems. In this work, we consider the hypersurface paradigm complementing the software defined metasurface with an embedded controller network in order to facilitate the ...
Saeed, Taqwa, Aziz, Waqar, Pitsillides, Andreas, Vassiliou, Vasos, Akyildiz, Ian, Taghvaee, Hamidreza, Abadal Cavallé, Sergi, Liaskos, Christos, Tsioliaridou, Ageliki, Ioannidis, Sotiris, Emoyon-Iredia, Ehizogie, Lestas, Marios   +11 more
openaire   +1 more source

Solar-powered light-modulated microwave programmable metasurface for sustainable wireless communications. [PDF]

Nat Commun
Programmable metasurface holds big promise in wireless communications by virtue of its powerful capability in controlling electromagnetic waves. However, challenges exist for the programmable metasurface in achieving self-sufficient renewable energy ...
Tian HW, Sun YL, Zhang XG, Li X, Zhu Q, Song C, Qiu CW, Cui TJ, Jiang WX.   +8 more
europepmc   +2 more sources

Adaptively programmable metasurface for intelligent wireless communications in complex environments. [PDF]

Nat Commun
The programmable metasurface or reconfigurable intelligent surface is one of the emerging technologies for next-generation wireless communications, but the existing programmable metasurfaces still rely on human control to reshape the electromagnetic (EM)
Yang HQ, Dai JY, Li HD, Wu L, Shen ZH, Zhou QY, Zhang MZ, Wang SR, Wang ZX, Wu JW, Jin S, Tang W, Cheng Q, Cui TJ.   +13 more
europepmc   +2 more sources

Controllable Manipulation of Wi-Fi Signals Using Tunable Metasurface

Leida xuebao, 2021
In this paper, we propose the utilization of a programmable metasurface for flexibly manipulating ambient Wi-Fi signals. First, we propose a new and efficient optimization algorithm CWGS (Complex Weighted Gerchberg-Saxton), which is based on an ...
Ya SHUANG, Li LI, Zhuo WANG, Menglin WEI, Lianlin LI   +4 more
doaj   +1 more source

All‐Dielectric Programmable Huygens' Metasurfaces [PDF]

Advanced Functional Materials, 2020
AbstractLow‐loss nanostructured dielectric metasurfaces have emerged as a breakthrough platform for ultrathin optics and cutting‐edge photonic applications, including beam shaping, focusing, and holography. However, the static nature of their constituent materials has traditionally limited them to fixed functionalities.
Leitis, Aleksandrs, Heßler, Andreas, Wahl, Sophia, Wuttig, Matthias, Taubner, Thomas, Tittl, Andreas, Altug, Hatice   +6 more
openaire   +5 more sources

Biobased and Programmable Electroadhesive Metasurfaces

ACS Applied Materials & Interfaces, 2022
Electroadhesion has shown the potential to deliver versatile handling devices because of its simplicity of actuation and rapid response. Current electroadhesion systems have, however, significant difficulties in adapting to external objects with complex shapes.
Li, Qinyu, Le Duigou, Antoine, Guo, Jianglong, Thakur, Vijay Kumar, Rossiter, Jonathan, Liu, Liwu, Leng, Jinsong, Scarpa, Fabrizio   +7 more
openaire   +3 more sources