Results 91 to 100 of about 66,629 (316)

A Metasurface Superstrate for Mutual Coupling Reduction of Large Antenna Arrays

IEEE Access, 2020
In this paper, a ε-negative metasurface superstrate is proposed for mutual coupling reduction of large antenna arrays. Unlike the previous decoupling metasurface works that are mostly confined to two-ports antennas, the proposed decoupling ...
Jiazhi Tang, Faizan Faraz, Xiaoming Chen, Qingqing Zhang, Qinlong Li, Yingsong Li, Shuai Zhang   +6 more
doaj   +1 more source

Phase‐shifted metasurface design for pseudo‐nondiffractive beam deflection

IET Microwaves, Antennas & Propagation, 2022
A transmission phase‐shifted metasurface (PSM) array has been proposed for non‐diffractive beam deflection. A PSM element consists of two identical semicircular rings and an I‐shaped structure, which is symmetrically printed on both sides of the F4B ...
Xiaoqing Yang, Tiantian Chen, Ping Lu, Ying Zou, Weize Li, Qian Liu   +5 more
doaj   +1 more source

Brewster quasi bound states in the continuum in all-dielectric metasurfaces from single magnetic-dipole resonance meta-atoms

, 2019
Bound states in the continuum (BICs) are ubiquitous in many areas of physics, attracting especial interest for their ability to confine waves with infinite lifetimes.
Abujetas, Diego R., Barreda, Angela, Geffrin, Jean-Michel, Litman, Amelie, Moreno, Fernando, Saenz, Juan J., Sanchez-Gil, Jose A.   +6 more
core   +2 more sources

Nonlinear response of Q-boosting metasurfaces beyond the time-bandwidth limit [PDF]

, 2022
Pavel Shafirin, Varvara V. Zubyuk, Andrey A. Fedyanin, Maxim R. Shcherbakov   +3 more
openalex   +1 more source

Waveform-Dependent Absorbing Metasurfaces [PDF]

Physical Review Letters, 2013
We present the first use of a waveform-dependent absorbing metasurface for high-power pulsed surface currents. The new type of nonlinear metasurface, composed of circuit elements including diodes, is capable of storing high power pulse energy to dissipate it between pulses, while allowing propagation of small signals.
Wakatsuchi, Hiroki, Kim, Sanghoon, Rushton, Jeremiah J, Sievenpiper, Daniel F   +3 more
openaire   +6 more sources

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

Broadband polarization conversion with anisotropic plasmonic metasurfaces

Scientific Reports, 2017
Metasurfaces offer exciting opportunities that enable precise control of light propagation, optical intensity, phase and polarization. Plasmonic metasurface based quarter-wave plates have been recently studied to realize the conversion between linear ...
Wei Cao, Xiaodong Yang, Jie Gao
doaj   +1 more source

One-shot ultraspectral imaging with reconfigurable metasurfaces

, 2020
One-shot spectral imaging that can obtain spectral information from thousands of different points in space at one time has always been difficult to achieve. Its realization makes it possible to get spatial real-time dynamic spectral information, which is
Cai, Xusheng, Cui, Kaiyu, Feng, Xue, He, Yuhan, Huang, Yidong, Liu, Fang, Xiong, Jian, Xu, Sheng, Zhang, Wei, Zheng, Zekun, Zhu, Hongbo   +10 more
core  

Active tuning of high-Q dielectric metasurfaces

, 2017
We demonstrate the active tuning of all-dielectric metasurfaces exhibiting high-quality factor (high-Q) resonances. The active control is provided by embedding the asymmetric silicon meta-atoms with liquid crystals, which allows the relative index of ...
Brener, Igal, Campione, Salvatore, Hopkins, Ben, Komar, Andrei, Liu, Sheng, Miroshnichenko, Andrey E., Neshev, Dragomir N., Nogan, John, Parry, Matthew, Sinclair, Michael B.   +9 more
core   +1 more source

A true metasurface antenna [PDF]

2016 IEEE International Symposium on Antennas and Propagation (APSURSI), 2016
AbstractWe present a true metasurface antenna based on electrically-small resonators. The resonators are placed on a flat surface and connected to one feed point using corporate feed. Unlike conventional array antennas where the distance between adjacent antennas is half wavelength to reduce mutual coupling between adjacent antennas, here the distance ...
Mohamed El Badawe, Thamer S. Almoneef, Omar M. Ramahi   +2 more
openaire   +2 more sources