Results 161 to 170 of about 1,192 (198)

Absorptive Coding Metasurface With Ultrawideband Backscattering Reduction

IEEE Antennas and Wireless Propagation Letters, 2020
In this letter, a new absorptive coding metasurface with a triple-layer topology is proposed to reduce the backscattering in an ultrawide band by combining absorption and diffusion simultaneously. Two separate layers for the coding metasurface and absorber are designed to primarily reduce the high- and low-frequency backscattering.
Lin Zhou, Zhongxiang Shen
exaly   +5 more sources

A Novel Coding Metasurface for Wireless Power Transfer Applications

Energies, 2019
We propose and implement a novel 1-bit coding metasurface that is capable of focusing and steering beam for enhancing power transfer efficiency of the electromagnetic (EM) wave-based wireless power transfer systems. The proposed metasurface comprises 16 &
Nguyen Minh Tran, Muhammad Miftahul Amri, Je Hyeon Park   +2 more
exaly   +2 more sources

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Coding Piezoelectric Metasurfaces

Advanced Functional Materials, 2022
AbstractThe manipulation of acoustic waves plays an important role in a wide range of applications. Currently, acoustic wave manipulation typically relies on either acoustic metasurfaces or phased array transducers. The elements of traditional metasurfaces are usually designed with complex artificial structures and limited by the additive manufacturing
Zhaoxi Li, Chunlong Fei, Shenghui Yang, Chenxue Hou, Jianxin Zhao, Yi Li, Chenxi Zheng, Heping Wu, Yi Quan, Tianlong Zhao, Dongdong Chen, Di Li, Gang Niu, Wei Ren, Meng Xiao, Yintang Yang   +15 more
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Coding Acoustic Metasurfaces

Advanced Materials, 2016
Coding acoustic metasurfaces can combine simple logical bits to acquire sophisticated functions in wave control. The acoustic logical bits can achieve a phase difference of exactly π and a perfect match of the amplitudes for the transmitted waves. By programming the coding sequences, acoustic metasurfaces with various functions, including creating ...
Boyang, Xie, Kun, Tang, Hua, Cheng, Zhengyou, Liu, Shuqi, Chen, Jianguo, Tian   +5 more
openaire   +2 more sources

A Transmissive Coding Metasurface

2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2019
A transmissive metasurface is proposed in this paper. The metasurface consists of three substrates gaped by air, where the same metallic slot ring is attached to each substrate respectively. To facilitate the dynamic control of the transmission coefficient, the varactor diodes are employed across the slots in the element. By changing the biasing states
Yu Xuan Jiang, Yu Bo Shi, Jun Chen Ke, Ming Zheng Chen, Qiang Cheng   +4 more
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Broadband digital coding metasurface holography

Journal of Applied Physics, 2021
Digital coding metasurfaces composed of subwavelength meta-atoms can flexibly control electromagnetic waves to achieve holography, which has great potential in millimeter-wave imaging systems and data storage. In this paper, we propose a 3-bit reflective digital coding metasurface.
Qiang Xiao, Qian Ma, Liang Wei Wu, Yue Gou, Jia Wei Wang, Wei Han Li, Rui Zhe Jiang, Xiang Wan, Tie Jun Cui   +8 more
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Programmable Digital-coding-feeding Metasurfaces

2021 International Applied Computational Electromagnetics Society (ACES-China) Symposium, 2021
Metasurfaces, which could control electromagnetic (EM) waves in different characteristics by arranging the artificial micro-structures on a flat interface. In recent years, programmable metasurface is introduced to control the EM waves with multi-function.
Si Jia Li, Zhuo Yue Li, Bo Wen Han, Guo Shuai Han, Xiang Yu Cao   +4 more
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Actively tunable terahertz coding metasurfaces

Optics Communications, 2020
Abstract Lately, programmable metasurfaces have been proposed by adding a PIN diode between two metallic patches in microwave region. However, the pin-diode switches can only operate at relatively lower frequencies (i 60 GHz), the conventional electronic method of device design used in the microwave band cannot easily be extended to the terahertz ...
Li Jiu-sheng, Li Shao-he, Yao Jian-quan
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A low scattering coding metasurface

2015 IEEE 4th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2015
Low scattering surfaces made of subwavelength structures are of broad interest in practical engineering in recent years. In this paper we investigate theoretically and experimentally the coding metasurface for cloaking applications. A 1-bit and 2-bit metasurface with two/four phase states has been considered in this design, resulting in two/four kinds ...
Qiang Cheng, Tie Jun Cui
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Shared-aperture Multifunctional Coding Metasurface

2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), 2020
Shared-aperture metasurface will certainly be a hot point as the rapid development of radar applications. Here we propose a shared-aperture multifunctional transmission metasurface. Coded unit cells with eight phase states of 0, π/4, π/2, 3π/4, n, 5π/4, 3π/2 and 7π/4 are employed to form the shared-aperture metasurface with proper arrangement.
Jia Yuan Yin, Li-Xin Guo
openaire   +1 more source