Results 1 to 10 of about 18,071 (120)

Frequency Magnetically Tunable Terahertz Perfect Absorber Based on Graphene and Silica Layered Dielectric

open access: yesCrystals, 2023
A frequency magnetically tunable perfect absorber based on graphene in the terahertz (THz) region is proposed. The performance is analysed using the 4 × 4 transfer matrix method, demonstrating that the perfect absorption frequency of the proposed ...
Zhenyan Wei, Yannan Jiang, Jiao Wang
doaj   +1 more source

Coplanar Discontinuous Transmission Line Feed for Phase Gradient Metasurface Antenna

open access: yesInternational Journal of Antennas and Propagation, 2022
The aim of this study is to efficiently excite the radiation of phase gradient metasurface (PGM), a novel coplanar discontinuous transmission line feed is proposed for reduction of the profile, where 12 uniform discontinuous rectangular rings form the ...
Yiying Wang   +6 more
doaj   +1 more source

Tunable plasmon induced transparency with high transmittance in a two-layer graphene structure

open access: yesResults in Physics, 2021
A dynamically tunable plasmon induced transparency planar structure with double layers hollow-cross graphene array is proposed in this paper. Due to energy oscillating back and forth between two weak hybridized states made up of upper and lower graphene,
Shuquan Zheng   +3 more
doaj   +1 more source

Reconfigurable Polarizer Based on Bulk Dirac Semimetal Metasurface

open access: yesCrystals, 2020
In this paper, we propose a reflective polarizer in terahertz regime, which utilizes the Bulk-Dirac-Semimetal (BDS) metasurface can be dynamically tuned in broadband.
Yannan Jiang, Jing Zhao, Jiao Wang
doaj   +1 more source

Resource Scheduling for Multitarget Imaging in a Distributed Netted Radar System Based on Maximum Scheduling Benefits

open access: yesSensors, 2022
As a new radar system with improved performance, distributed multiple-input multiple-output (MIMO) radar provides a new idea for the development of netted radar.
Tianchen Hu   +3 more
doaj   +1 more source

Scene Recognition Based on Privilege Information and Attention Mechanism [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2021
In the scene recognition, RGB images present appearance information and depth image contains geometry information,which complement each other. In order to use the complementary information contained in the depth images and the RGB images in the test ...
SUN Ning   +3 more
doaj   +1 more source

T-Type Vertical Wall for Decoupling and Pattern Correction of Patch Antenna

open access: yesApplied Sciences, 2022
The requirements of 5G/6G promote progress in the miniaturization of the antenna array, which promotes the development of a closely spaced decoupling technique. However, the present techniques face the common problem of beam tilt if the spacing is close.
Yiying Wang   +6 more
doaj   +1 more source

An Efficient Solution to the Perspective-n-Point Problem for Camera With Unknown Focal Length

open access: yesIEEE Access, 2020
To achieve lower time consumption in pose estimation of an uncalibrated camera, a novel and efficient method to the Perspective-n-Point problem (PnP) is proposed in this article.
Bingyi Zhou, Ziqiang Chen, Qinghua Liu
doaj   +1 more source

Front to Back Ratio Bandwidth Enhancement of Resonance Based Reflector Antenna by Using a Ring-Shape Director and Its Time-Domain Analysis

open access: yesIEEE Access, 2017
An uni-directional antenna designed by resonance-based reflector has the merits of compact size, low-profile, and ultra-wide impedance bandwidth. However, its front to back ratio (FBR) bandwidth is narrow owing to the small reflection coefficient values ...
Lin Peng   +3 more
doaj   +1 more source

Tunable Triple-Band Terahertz Absorber Based on Bulk-Dirac-Semimetal Metasurface

open access: yesIEEE Photonics Journal, 2021
A tunable triple-band absorber based on bulk-Dirac-semimetal (BDS) metasurface is proposed in the terahertz (THz) range. The design is comprised of a BDS film with a pattern of dual ring slots and a dielectric layer stacked on a fully reflective gold ...
Jiao Wang, Xinguo Wan, Yannan Jiang
doaj   +1 more source

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