One-bit light control digital super surface

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...

AI Technical Summary

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 the millimeter wave, terahertz and even higher frequency bands is limited.

However, electronic control requires an external power supply and a series of connecting wires, which will increase the complexity of the entire system and may cause unpredictable crosstalk

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