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A continuous cross all-dielectric metamaterial

An all-dielectric and metamaterial technology, applied in electrical components, antennas, etc., can solve the problems of unfavorable bandwidth expansion, damage to the continuity of material performance in the passband, and decrease in system symmetry, so as to save processing costs and improve material accuracy. High, low node loss effect

Active Publication Date: 2020-08-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing left-handed material designs generally use two kinds of resonators to achieve negative permittivity and negative magnetic permeability respectively. However, no matter how these two kinds of resonators with different structures are arranged, the symmetry of the system will always be reduced, so that The material is anisotropic
At the same time, the splitting of structural units makes the resonance peaks of each resonant unit separate, which may destroy the continuity of material properties in the passband, which is not conducive to the development prospect of bandwidth expansion.

Method used

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  • A continuous cross all-dielectric metamaterial
  • A continuous cross all-dielectric metamaterial
  • A continuous cross all-dielectric metamaterial

Examples

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Effect test

Embodiment 1

[0049] The continuous cross dielectric metamaterial consists of ceramic resonator bodies and resin matrix layers arranged in a matrix with a period of 11 mm, and the period L is 11 mm. Each ceramic resonator body is covered by a resin matrix layer of 5 mm thick.

[0050] figure 1 It is a schematic diagram of a ceramic resonator unit. The ceramic resonator unit is a cross structure with two arms of equal length. The period size is 11mm, the width of each arm is 3mm, and the thickness is 2mm.

[0051] Since it is difficult to form one piece, the method of cutting and splicing is adopted. First, the raw material ceramic plate (80mm*80mm*2mm) is cut into 2mm wide strips, and then cut into two kinds of ceramic strips with lengths of 8mm and 11mm, 8mm *3mm*2mm ceramic strips and 11mm*3mm*2mm ceramic strips can be combined in a 1:1 ratio to form multiple periodic units.

[0052] figure 1 It is a specific schematic diagram of using 8mm*3mm*2mm ceramic strips and 11mm*3mm*2mm ceramic strips f...

Embodiment 2

[0062] Embodiment 2 provides a continuous cross all-dielectric metamaterial, which is composed of ceramic resonator bodies and resin matrix layers arranged in a matrix according to a period L, the period L is 13 mm, and each ceramic resonator body is covered by a 5 mm thick resin matrix layer.

[0063] figure 1 It is a schematic diagram of a ceramic resonator unit. The ceramic resonator unit is a cross structure with two arms of equal length. The period size is 13mm, the width of each arm is 3mm, and the thickness is 2mm.

[0064] Since it is difficult to form one piece, the method of cutting and splicing is adopted. First, the raw material ceramic plate (80mm*80mm*2mm) is cut into 2mm wide strips, and then cut into two kinds of ceramic strips with lengths of 8mm and 13mm, 8mm *3mm*2mm ceramic strips and 11mm*3mm*2mm ceramic strips can be combined in a 1:1 ratio to form multiple periodic units.

[0065] The resin matrix is ​​formed by 3D printing technology, and the installation cond...

Embodiment 3

[0068] This embodiment provides a continuous cross full-dielectric metamaterial, which is composed of ceramic resonator bodies and resin matrix layers arranged in a matrix according to a period L, the period L is 9 mm, and each ceramic resonator body is covered by a 5 mm thick resin matrix layer.

[0069] figure 1 It is a schematic diagram of a ceramic resonator unit. The ceramic resonator unit is a cross structure with two arms of equal length. The period size is 9mm, the width of each arm is 1.5mm, and the thickness is 1.5mm.

[0070] Because it is difficult to form one piece, the method of cutting and splicing is adopted. First, the raw material ceramic plate (80mm*80mm*2mm) is cut into 1.5mm wide strips, and then cut into two kinds of ceramic strips with lengths of 9mm and 7mm. 9mm*1.5mm*1.5mm ceramic strips and 9mm*1.5mm*1.5mm ceramic strips can be combined in a 1:1 ratio to form multiple periodic units.

[0071] The resin matrix is ​​formed by 3D printing technology, and the in...

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Abstract

The invention discloses a continuous cross-shaped all-dielectric metamaterial composed of a plurality of dielectric resonator unit arrays, wherein each dielectric resonator unit is a cross-shaped dielectric resonator; the plurality of cross-shaped dielectric resonators are connected to each other so as to further form a continuous cross-shaped all-dielectric metamaterial. The continuous dielectricstructure is equivalent to an infinitely long electrical resonance and magnetic resonance cavity, and breaks through the periodic constraints. It is verified that the structure extends the left-handpass-band bandwidth of a left-hand metamaterial, so that the bandwidth is no longer broken but is continuous. Thus, the entire material is smooth to use.

Description

【Technical Field】 [0001] The invention belongs to the technical field of artificial electromagnetic materials, and specifically relates to a continuous cross all-medium metamaterial. 【Background technique】 [0002] New artificial electromagnetic materials, also known as electromagnetic metamaterials, have good control characteristics for electromagnetic waves due to the sub-wavelength unit structure design, which has attracted widespread attention in the academic community. Arranging metamaterial structural units in a periodic or aperiodic manner can effectively design reflected waves, transmitted waves and even radiation fields. [0003] Most of the left-handed metamaterials of metal structures are cleverly conceived, with complex structures and extremely high anisotropy. The development of three-dimensional isotropic left-handed metamaterials is very difficult and requires high manufacturing technology. And as the frequency increases, the difficulty of preparing the required ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 魏晓勇张凯乐靳立王军庞静徐卓
Owner XI AN JIAOTONG UNIV