Results 41 to 50 of about 1,043 (213)

Error Analysis of Programmable Metasurfaces for Beam Steering [PDF]

IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2020
Recent years have seen the emergence of programmable metasurfaces, where the user can modify the EM response of the device via software. Adding reconfigurability to the already powerful EM capabilities of metasurfaces opens the door to novel cyber-physical systems with exciting applications in domains such as holography, cloaking, or wireless ...
Hamidreza Taghvaee, Albert Cabellos-Aparicio, Julius Georgiou, Sergi Abadal   +3 more
openaire   +5 more sources

Design, Analysis, and Experiment on High-Performance Orbital Angular Momentum Beam Based on 1-Bit Programmable Metasurface

IEEE Access, 2021
In this study, a high-performance orbital angular momentum (OAM) beam is designed, analyzed and experimented using a 1-bit programmable metasurface. OAM as a novel technology is investigated systematically in this paper. Moreover, this study is motivated
Ziyang Wang, Xiaotian Pan, Fan Yang, Shenheng Xu, Maokun Li, Donglin Su   +5 more
doaj   +1 more source

Programmable Metasurfaces: State of the Art and Prospects [PDF]

2018 IEEE International Symposium on Circuits and Systems (ISCAS), 2018
Metasurfaces, ultrathin and planar electromagnetic devices with sub-wavelength unit cells, have recently attracted enormous attention for their powerful control over electromagnetic waves, from microwave to visible range. With tunability added to the unit cells, the programmable metasurfaces enable us to benefit from multiple unique functionalities ...
Pitilakis, A., Mirmoosa, Mohammad, Tsilipakos, O., Wang, Xuchen, Tasolamprou, A. C., Abadal, S., Cabellos-Aparicio, A., Alarcón, E., Liaskos, C., Kantartzis, N. V., Kafesaki, M., Economou, E. N., Soukoulis, C. M., Tretyakov, Sergei, Liu, Fu   +15 more
openaire   +5 more sources

Scalability Analysis of Programmable Metasurfaces for Beam Steering [PDF]

IEEE Access, 2020
Programmable metasurfaces have garnered significant attention as they confer unprecedented control over the electromagnetic response of any surface. Such feature has given rise to novel design paradigms such as Software-Defined Metamaterials (SDM) and Reconfigurable Intelligent Surfaces (RIS) with multiple groundbreaking applications.
Hamidreza Taghvaee, Sergi Abadal, Alexandros Pitilakis, Odysseas Tsilipakos, Anna C. Tasolamprou, Christos Liaskos, Maria Kafesaki, Nikolaos V. Kantartzis, Albert Cabellos-Aparicio, Eduard Alarcón   +9 more
openaire   +5 more sources

Highly integrated programmable metasurface for multifunctions in reflections and transmissions

APL Materials, 2022
Programmable manipulations on both reflections and transmissions usually require multi-layer metasurfaces, numerous active components, and control circuits, leading to a larger profile, complicated bias circuit design, and higher cost.
Qian Ma, Qiao Ru Hong, Xinxin Gao, Qiang Xiao, Lei Chen, Tie Jun Cui   +5 more
doaj   +1 more source

Programmable nonreciprocal meta-prism

Scientific Reports, 2021
Optical prisms are made of glass and map temporal frequencies into spatial frequencies by decomposing incident white light into its constituent colors and refract them into different directions.
Sajjad Taravati, George V. Eleftheriades
doaj   +1 more source

Adaptive Wettability of a Programmable Metasurface [PDF]

Advanced Engineering Materials, 2020
Metasurfaces with specific wettability have recently been gaining relevance in numerous areas of science and industry. This hasled to the technical requirements of these functional metasurfaces increasing in cost and complexity. Examples can be found in adjustable filters and membranes, as well as in lab‐on‐chip systems.
Marius Specht, Matthew Berwind, Chris Eberl   +2 more
openaire   +2 more sources

Design of a Wide-Angle and Polarization-Free 1-Bit Programmable Metasurface

Frontiers in Materials, 2022
Programmable metasurfaces have the powerful capability of controlling electromagnetic (EM) waves by coding the digital state of each meta-atom. However, conventional programmable metasurface units are difficult to maintain stable controllability under ...
Lu Liu, Yi Fei Huang, Hao Chi Zhang
doaj   +1 more source

Microwave Speech Recognizer Empowered by a Programmable Metasurface. [PDF]

Adv Sci (Weinh)
AbstractSpeech recognition becomes increasingly important in the modern society, especially for human–machine interactions, but its deployment is still severely thwarted by the struggle of machines to recognize voiced commands in challenging real‐life settings: oftentimes, ambient noise drowns the acoustic sound signals, and walls, face masks or other ...
Zhang H, Ruan H, Zhao H, Wang Z, Hu S, Cui TJ, Del Hougne P, Li L.   +7 more
europepmc   +5 more sources

A Polarization‐Modulated Information Metasurface for Encryption Wireless Communications

Advanced Science, 2022
Programmable and information metasurfaces have shown great potentials in wireless communications, but there are few reports on encrypted communications. In this paper, a programmable polarization‐modulated (PoM) information metasurface is proposed, which
Hai Lin Wang, Hui Feng Ma, Tie Jun Cui
doaj   +1 more source