Results 41 to 50 of about 903 (183)

Metasurfaced Reverberation Chamber

Scientific Reports, 2018
The concept of metasurfaced reverberation chamber (RC) is introduced in this paper. It is shown that by coating the chamber wall with a rotating 1-bit random coding metasurface, it is possible to enlarge the test zone of the RC while maintaining the ...
Hengyi Sun, Zhuo Li, Changqing Gu, Qian Xu, Xinlei Chen, Yunhe Sun, Shengchen Lu, Ferran Martin   +7 more
doaj   +1 more source

Convolution operations on time-domain digital coding metasurface for beam manipulations of harmonics

Nanophotonics, 2020
Time-domain digital coding metasurfaces have been proposed recently to achieve efficient frequency conversion and harmonic control simultaneously; they show considerable potential for a broad range of electromagnetic applications such as wireless ...
Zhang Cheng, Yang Jin, Yang Liu Xi, Ke Jun Chen, Chen Ming Zheng, Cao Wen Kang, Chen Mao, Wu Zhan Hao, Chen Jian Feng, Cheng Qiang, Cui Tie Jun   +10 more
doaj   +1 more source

All-Metal Coding Metasurfaces for Broadband Terahertz RCS Reduction and Infrared Invisibility

Photonics, 2023
With the rapid advancement of modern technology and radar detection systems, electromagnetic (EM) stealth technology has become increasingly significant, particularly in aircraft stealth and military radar applications.
Ming Zhang, Najiao Zhang, Peng Dong, Lin Yang, Baozhu Wang, Ruihong Wu, Weimin Hou   +6 more
doaj   +1 more source

Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces

iScience
Summary: The development of coding metasurface opens an important development direction for beam modulator components. However, the lack of dynamic tunability is a major obstacle to the development and practicality of terahertz coding metasurface.
Min Jia, Chao Zhao, Hui Wang, Weiran Sun, Yuncheng Lu   +4 more
doaj   +1 more source

Dynamic radiation steering with transmission-type coding metasurface

Optics Express, 2022
In this paper, we integrate continuous transmission amplitude modulation and phase coding into a metasurface, and dynamic transmitted electromagnetic field manipulation is realized in microwave regime. The active metasurface is obtained by placing a PIN diodes loaded amplitude modulation metasurface on a binary phase coding metasurface whose coding ...
Jianfeng Yang, Juan Chen, Lei Quan, Xiaoming Chen, Hongyu Shi, Wei Xue, Yajun Liu   +6 more
openaire   +2 more sources

Wide-Angle Scanning Graphene-Biased Terahertz Coding Meta-Surface

Micromachines, 2023
We demonstrate a reconfigurable beam steerable meta-surface through a graphene-biased slot-array over a grounded quartz substrate. More specifically, the graphene meta-elements can be dynamically tuned to program the radiations by applying adequate DC ...
Yangyang Xu, Rui Yang, Yan Wang
doaj   +1 more source

Shaping electromagnetic waves using software-automatically-designed metasurfaces

Scientific Reports, 2017
We present a fully digital procedure of designing reflective coding metasurfaces to shape reflected electromagnetic waves. The design procedure is completely automatic, controlled by a personal computer.
Qian Zhang, Xiang Wan, Shuo Liu, Jia Yuan Yin, Lei Zhang, Tie Jun Cui   +5 more
doaj   +1 more source

4-Bit Optimized Coding Metasurface for Wideband RCS Reduction

IEEE Access, 2019
In this paper, a 4-bit reflective coding metasurface with the polarization-insensitive unit cell is designed for wideband radar cross section (RCS) reduction.
Yasir Saifullah, Abu Bakar Waqas, Guo-Min Yang, Fuheng Zhang, Feng Xu   +4 more
doaj   +1 more source

One-bit quantization is good for programmable coding metasurfaces

Science China Information Sciences, 2022
The information-carrying programmable metasurfaces has found widespread applications in communication, sensing, and other related areas. However, there is a fundamental but unresolved problem, i.e., the rigorous understanding of the quantization of metasurface coding.
Shuang, Ya, Zhao, Hanting, Wei, Menglin, Cheng, Qiang, Jin, Shi, Cui, Tiejun, del Hougne, Philipp, Li, Lianlin   +7 more
openaire   +2 more sources

Multiple-Beam Steering Using Graphene-Based Coding Metasurfaces

Micromachines, 2023
Recently, the coding metasurface has gained significant attention due to its exceptional potential in controlling electromagnetic (EM) waves with the rapid development of wireless communication systems.
Bin Zheng, Xin Rao, Yuyu Shan, Chuandong Yu, Jingke Zhang, Na Li   +5 more
doaj   +1 more source