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Radiation scattering regulated 1-bit excitable digital coding metasurface

A digital encoding and metasurface technology, applied in the direction of electrical components, antennas, etc., can solve the problem that the metasurface does not have radiation, and achieve a wide range of applications

Active Publication Date: 2020-08-14
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From the existing research, it can be found that the existing metasurface does not have the function of radiation, even the combination of the metasurface and the antenna is just a simple combination, and there is no direct connection between the metasurface unit and the antenna

Method used

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  • Radiation scattering regulated 1-bit excitable digital coding metasurface
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  • Radiation scattering regulated 1-bit excitable digital coding metasurface

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Embodiment Construction

[0037] The present invention proposes a 1-bit excitable digitally coded metasurface regulated by radiation scattering, such as figure 1 As shown, Fig. 1(a) shows the three-dimensional front view of the excitable digitally encoded metasurface unit, figure 1 (b) shows the perspective rear view of the excitable digitally encoded metasurface unit. The excitable digitally coded metasurface unit is a cuboid structure, and its upper and lower surfaces are square, including a dielectric board, a metal patch on the upper surface of the dielectric board, a metal patch on the lower surface of the dielectric board, a metal probe passing through the dielectric board, and a dielectric board. SMA interface on the lower surface.

[0038] The dielectric plate is a cuboid structure, its upper and lower surfaces are square, and the side length is l1, and l1 is also the period length of the excitable digitally encoded metasurface unit; the side length (i.e. period length) of the square on the up...

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Abstract

The invention provides an exciteable digital coding metasurface unit of a cuboid structure, the upper surface and the lower surface of the exciteable digital coding metasurface unit are square, and the exciteable digital coding metasurface unit comprises a dielectric plate, a dielectric plate upper surface metal patch, a dielectric plate lower surface metal patch, a metal probe penetrating throughthe upper surface and the lower surface of the dielectric plate and an SMA interface in the lower surface of the dielectric plate. 1bit coding is carried out on the metasurface unit and a 90-degree rotating unit of the metasurface unit, and a 1bit excitable digital coding metasurface array is formed through a chessboard array. The single-station RCS of 10 dB is reduced to cover 4.88 GHz to 7.36 GHz, the maximum reduction amount exceeds 30 dB, and the radiation bandwidth covers 7.59 GHz to 7.64 GHz. Linear polarization, left-handed circular polarization and single-beam and four-beam radiationcan be realized through different excitation conditions. According to the method, the 1bit digital coding metasurface can be excited, the working characteristics of the digital coding metasurface areexpanded, and the application range of the metasurface is greatly expanded.

Description

technical field [0001] The present invention relates to multifunctional digital coding supersurface design technology, in particular to a kind of 1 bit (bit) excitable digital coding supersurface. Background technique [0002] Metamaterials refer to sub-wavelength artificial composite periodic or aperiodic structures with extraordinary physical properties that are not possessed by ordinary materials in nature. Their working frequency bands include microwave frequency bands, terahertz frequency bands, and optical frequency bands. Metasurface is a kind of metamaterial with two-dimensional structure. Due to its thin thickness and easy conformal characteristics, it has attracted the attention of more and more countries. Metasurface has shown great promise in the application of microwave circuits and antenna stealth technology. important value. In 2014, "Digital Metamaterials" (Tie Jun Cui, Mei Qing Qi, Xiang Wan, Jie Zhao, Qiang Cheng, Light: Science and Application.vol.3, no.1...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0013H01Q15/0026
Inventor 李思佳曹祥玉杨欢欢李桐张晨吉地辽日郭泽旭
Owner AIR FORCE UNIV PLA
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