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Reconfigurable metasurface with reflectivity, transmissivity and absorptivity capable of being regulated and controlled at same time

A transmittance and absorptivity technology, applied in the field of reconfigurable metasurfaces, can solve problems such as lack of metasurfaces, and achieve the effect of improving tunable performance, good engineering practicability, and meeting the needs of practical application scenarios.

Pending Publication Date: 2022-01-14
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a reconfigurable metasurface with adjustable reflectivity, transmittance and absorptivity at the same time, so as to solve the lack of a reconfigurable metasurface in the prior art that can realize three states of reflection, transmission and absorption. question

Method used

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  • Reconfigurable metasurface with reflectivity, transmissivity and absorptivity capable of being regulated and controlled at same time
  • Reconfigurable metasurface with reflectivity, transmissivity and absorptivity capable of being regulated and controlled at same time
  • Reconfigurable metasurface with reflectivity, transmissivity and absorptivity capable of being regulated and controlled at same time

Examples

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Embodiment 1

[0036] A reconfigurable metasurface whose reflectivity, transmittance and absorptivity can be adjusted simultaneously includes two control layers and an air layer 4 . The thickness of the two air layers 4 is t 2 = 2.1 mm. Metal resonator 5 can adopt metal copper, and its conductivity can be 5.96×10 7 S / m. The dielectric layer 7 is FR-4, its dielectric constant is 4.3, and its loss tangent is 0.02. The line width of the metal resonator 5 is w 0 =1.4mm, load the slot width h of the PIN diode 0 =1.7mm, medium thickness t 0 = 0.5 mm. The width w=0.1 mm of the bias line 14 . The resistor 12 is R=50Ω.

[0037] w of the first slotted square ring 9 1 = 0.15mm, w of the second square ring 10 with slits 2 = 1.2mm, w of the third slit square ring 11 3 =0.3mm, and the resistance value loaded on each slit is the same, which is R=50Ω. The spacing between the first slit square ring 9 and the second slit square ring 10 is w 12 =0.6mm, the distance between the second slotted squar...

Embodiment 2

[0043] Such as Figure 5 As shown, three reconfigurable metasurfaces whose reflectivity, transmittance and absorptivity can be adjusted at the same time can be combined to form a 3×1 unit array, and three rows of bias lines 14 are arranged on the dielectric layer 7, each The feed points on one row of bias lines 14 are connected to the same pole of the power supply, and the feed points of adjacent rows are connected to different poles of the power supply; each bias line is connected in series with two inductors to protect the bias line from the influence of AC signals .

[0044] The use method of a reconfigurable metasurface whose reflectivity, transmittance and absorptivity can be adjusted simultaneously in the present invention is as follows:

[0045] Method 1: All the PIN diodes 6 of the first control layer 1 are turned on, and the bias voltage of the PIN diode 6 of the second control layer 2 changes from 0V to 0.7V, then the equivalent resistance R D Change from 1.0*10^6Ω...

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Abstract

The invention discloses a reconfigurable metasurface with reflectivity, transmissivity and absorptivity capable of being regulated and controlled at same time, which comprises two regulation and control layers arranged at an interval, wherein the two regulation and control layers are respectively a first regulation and control layer and a second regulation and control layer, a resonance layer is arranged between the two regulation and control layers, and an air layer is arranged between each regulation and control layer and the resonance layer; each regulation and control layer comprises a dielectric layer, metal resonators are arranged on the two surfaces of the dielectric layer, and a PIN diode is arranged on each metal resonator; three offset lines are arranged on the dielectric layer in parallel at intervals; and the resonance layer comprises a dielectric layer, the two surfaces of the dielectric layer are sequentially sleeved with three metal square rings from outside to inside respectively, and each metal square ring is provided with a resistor. The problem that a metasurface capable of achieving simultaneous reconfiguration of the three states of reflection, transmission and absorption is lacked in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of artificial electromagnetic metasurfaces, and in particular relates to a reconfigurable metasurface whose reflectivity, transmittance and absorptivity can be adjusted simultaneously. Background technique [0002] Metamaterial is an artificial structure with sub-wavelength structure with unique electromagnetic properties. Metasurface is a metamaterial with two-dimensional structure, which has the advantages of low loss, light weight, and easy integration, which greatly reduces the requirements of the manufacturing process. It has extremely strong control over the amplitude, phase and polarization of electromagnetic waves, and has great potential and application prospects. Various electromagnetic devices with specific functions such as planar lenses, polarizers, and absorbers have emerged. [0003] Different from metasurfaces with fixed properties, the performance of reconfigurable metasurfaces can be flexib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/0086H01Q15/002H01Q15/0026H01Q17/007
Inventor 黄晓俊马霞李学文范京道曹苗何嘉豪高焕焕
Owner XIAN UNIV OF SCI & TECH