One-bit light control digital super surface

A digital, meta-surface technology, applied in electrical components, antennas, etc., can solve the problems of increasing system complexity, manufacturing difficulty, and loss, and achieves reduced design and implementation complexity, low processing cost, and light weight. Effect

Pending Publication Date: 2019-02-12
SOUTHEAST UNIV
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Problems solved by technology

Three-dimensional metamaterials use the design method of spatial phase accumulation to control the wavefront of electromagnetic waves. As the frequency increases, the loss is high, the cost is high, and the manufacturing is difficult. The practical application in

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  • One-bit light control digital super surface
  • One-bit light control digital super surface
  • One-bit light control digital super surface

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0031] The invention designs and manufactures a one-bit light-controlled digital metasurface, which can realize two coding sequences by controlling the switch of the light source. As shown in FIG. 1( a ), the one-bit optically controlled digital metasurface of the present invention includes a digital reflective artificial electromagnetic surface 1 and a PIN silicon photovoltaic cell 2 . The light source part is composed of 50 white light-emitting diodes connected in parallel, and the light-emitting diodes are fixed above a controllable DC voltage source composed of 50 PIN silicon photocells 2 . By controlling the light intensity irradiated on the PIN silicon photovoltaic cell 2, the DC voltage generated by the PIN silicon photovoltaic cell 2 also changes accordingly. In this embodiment, the digital metasurface includes 6×6 super subunits 4 , and each super s...

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Abstract

The invention discloses a one-bit light control digital super surface, which comprises a digital reflection type artificial electromagnetic surface and a silicon photocell connected with the reflection type artificial electromagnetic surface, wherein the digital reflection type artificial electromagnetic surface consists of digital units arranged in an array; each digital unit comprises a medium base plate, a metal ground positioned on the lower side of the medium base plate, two metal patches arranged on the upper side of the medium base plate, and a varactor arranged between the two metal patches and connecting the two metal patches; and third voltage offset lines are arranged at the upper and lower ends of the metal patches. The digital ' 0' and ' 1' are used to represent two phase states of the digital units to form the one-bit digital super surface. By controlling the intensity of the irradiation light, the radiation beam of the one-bit light control digital super surface can be remotely regulated and controlled to realize different functions. The one-bit light control digital super surface has the advantages of simple and convenient design, low processing cost, small size, light weight and the like, and has important application prospects in aspects of high-performance antennas, reduction of radar back scattering and the like.

Description

technical field [0001] The invention belongs to the field of novel artificial electromagnetic materials, and relates to a one-bit light-controlled digital metasurface. Background technique [0002] New artificial electromagnetic materials are composed of periodic or non-periodic sub-wavelength artificial units, and have many electromagnetic properties that do not exist in nature, such as negative refraction, backward propagation, perfect imaging, optical illusion, invisible shading, etc. In the past few decades, electromagnetic metamaterials have received extensive attention and research. Three-dimensional metamaterials use the design method of spatial phase accumulation to control the wavefront of electromagnetic waves. As the frequency increases, the loss is high, the cost is high, and the manufacturing is difficult. The practical application in the millimeter wave, terahertz and even higher frequency bands is limited. In recent years, a new class of ultrathin metamateria...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0086H01Q15/0013H01Q15/0033
Inventor 蒋卫祥张信歌柏林崔铁军
Owner SOUTHEAST UNIV
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