Metamaterial

A technology of metamaterials and dielectric layers, applied in the field of metamaterials, can solve the problems of difficult operation, complex structure, increased structural complexity, etc., and achieve the effect of continuous control

Pending Publication Date: 2019-03-05
KUANG CHI CUTTING EDGE TECH LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the mechanically controllable metamaterial needs to precisely control the amount of movement, but the volume of the mechanically controllable metamaterial is relatively large and difficult to operate; the state of the controllable metamaterial loaded with microwave switches and the number of switches Relatedly, to achieve a sufficient number of states, it is necessary to add a sufficient number of switches, resulting in an increase in the complexity of the structure; the frequency range of the controllable metamaterial loaded with controllable materials is not large, and an external bias field is required to make the structure complex.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0043] Such as figure 2 As shown, the annular metal sheet 6 is provided with a first opening 7, so that the metal microstructure 1 is a C-shaped metal microstructure, and at the same time, the center of the annular metal sheet 6 coincides with the center of the first dielectric layer 4 . In addition, the C-type metal microstructure on the upper and lower surfaces of the electrically controllable metamaterial unit and the reflective layer 5 are used to apply a bias voltage to form a bias electric field, thereby controlling the dielectric constant of the liquid crystal material by controlling the voltage between the metal on the upper and lower surfaces. Thereby changing the resonant frequency of the antenna, and recording the change of the resonant frequency of the metamaterial when the dielectric constant changes, and drawing the frequency-permittivity curve, in addition, although figure 1 It is only shown that there is a first opening 7 on the ring metal sheet, but those of...

no. 2 example

[0046] Such as image 3 As shown, the metal microstructure 1 is a double K-shaped metal microstructure, and the double K-shaped metal microstructure is composed of two K-shaped metal sheets, and the above-mentioned two K-shaped metal sheets are arranged symmetrically with respect to the horizontal axis. And each K-shaped metal sheet includes a rectangular metal sheet 9 and an arc-shaped metal sheet. In addition, the two arc-shaped metal sheets of the double K-shaped metal microstructure can be obtained by setting the first opening 7 and the second opening 8 on the annular metal sheet 6. Of course, it can be understood that the above-mentioned two arc-shaped metal sheets are In the case of a semicircular metal sheet, the circular metal sheet can be cut in half. In addition, the above-mentioned first opening 7 or second opening 8 may also be an opening of the metal microstructure 1 .

[0047] Also, continue to see image 3, the double K-type metal microstructure also includes...

no. 1 Embodiment

[0059] Such as figure 1 and figure 2 As shown, the selected center operating frequency f range is 14GHz, the corresponding wavelength λ is 21.43mm, the material of metal microstructure 1 is copper, and the dielectric material is Rogers RT5880 gold-plated material (permittivity ε=2.2, magnetic permeability μ=1 ), and the metal microstructure 1 is a C-shaped metal sheet, the length and width of the electrically controllable metamaterial unit are equal, a=11mm is used, and the width of the metal ring is 1mm, the first opening 7 between the C-shaped metal sheets The distance between them is 1 mm, the thickness of the metal is 0.035 mm, the thickness of the first dielectric layer 4 and the second dielectric layer 2 is 0.1 mm, and the unit pitch of the metamaterial unit is 11 mm.

[0060] In addition, periodic boundary conditions are designed. When the dielectric constant of the liquid crystal material changes between 2.5-3.3, the frequency modulation is 14.65GHz-13.14GHz, and the...

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PUM

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Abstract

The invention discloses a metamaterial, which comprises a reflection layer and an electrically controllable metamaterial unit array, wherein the electrically controllable metamaterial unit is arrangedon the top of the reflection layer and comprises a plurality of periodically arranged electrically controllable metamaterial units; and each electrically controllable metamaterial unit comprises a first dielectric layer arranged on the top of the reflection layer, a liquid crystal layer arranged on the top of the first dielectric layer, a second dielectric layer arranged on the top of the liquidcrystal layer, and a metal microstructure arranged on the top of the second dielectric layer; and the metal microstructure comprises an annular metal sheet which is provided with an opening. By use ofthe metamaterial, on a premise that the geometric parameters of a structural material are not changed, the continuous control of electromagnetic parameters can be realized in one section of quite wide frequency band range.

Description

technical field [0001] The present invention relates to the field of metamaterials, in particular to a metamaterial. Background technique [0002] Metamaterials are artificial composite structures with extraordinary physical properties that traditional natural materials do not have. However, for metamaterials, their strange electromagnetic properties have a frequency band range. Beyond this range, the strange electromagnetic properties will be weakened. or even disappear. [0003] The rapid development of wireless communication systems puts forward new requirements for antenna design, and also promotes the development and improvement of tunable metamaterial functions. So far, tunable metamaterials mainly include three categories: (1) mechanically controllable metamaterials; (2) loaded with microwave switches, etc.; (3) loaded with controllable materials, such as ferrite, liquid crystal materials, graphite ene etc. Among them, the mechanically controllable metamaterial nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 不公告发明人
Owner KUANG CHI CUTTING EDGE TECH LTD
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