Metamaterial with low-frequency negative magnetic permeability

A technology of negative magnetic permeability and metamaterials, which is applied in antennas, electrical components, etc., can solve the problem of high operating frequency of metamaterials, and achieve the effects of excellent electrical properties, improved transmission efficiency, and light weight

Inactive Publication Date: 2017-02-22
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above defects, the present invention provides a metamaterial with low frequency negative magnetic pe...

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  • Metamaterial with low-frequency negative magnetic permeability
  • Metamaterial with low-frequency negative magnetic permeability
  • Metamaterial with low-frequency negative magnetic permeability

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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] Such as figure 1 As shown, the schematic diagram of the structure of the metamaterial with low frequency negative magnetic permeability provided by the present invention, the metamaterial with low frequency negative magnetic permeability is a metamaterial unit, and the metamaterial unit includes a resonant coil 1, and the resonant coil 1 is a planar square spiral The resonant coil 1 is located on one side of the dielectric substrate 2, the number of metal coils is 2 to 6 turns, the width of the metal wire is 0.5 mm to 5.0 mm, and the spacing between the wires is 0.2 mm to 4.0 mm. One end of...

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Abstract

The invention discloses a metamaterial with low-frequency negative magnetic permeability. The metamaterial comprises a resonant coil, a dielectric substrate and a resonant capacitor. The resonant coil comprises planar, square and spiral metal wires, is connected with the resonant capacitor and is positioned on one surface of the dielectric substrate, and the resonant capacitor is positioned on the other surface of the dielectric substrate. Electromagnetic response can be generated by the resonant coil and the resonant capacitor when electromagnetic waves are transmitted onto the metamaterial, the metamaterial has characteristics of equivalent negative magnetic permeability characteristics around working frequencies, the resonant coil comprises the planar, square and spiral metal wires, the number of turns of the coil is 2-6, the distances between the metal wires range from 0.2 mm to 4.0 mm, the widths of the metal wires range from 0.5 mm to 5.0 mm, the magnitude of the resonant capacitor ranges from 10 pF to 100 pF, and accordingly the working frequencies of the metamaterial range from 13.55 MHz to 14.47 MHz. The metamaterial, has the advantages that the energy transmission distances can be extended, the energy transmission efficiency can be improved, and the metamaterial is thin and small.

Description

technical field [0001] The invention belongs to the technical field of electrical and electromagnetic new materials, and in particular relates to a metamaterial with low-frequency negative magnetic permeability. Background technique [0002] There is a certain relationship between the refractive index of a substance and the magnetic permeability and permittivity of the substance, that is, n 2 =ε(ω)μ(ω), obviously, when the magnetic permeability and permittivity are negative at the same time, the refractive index n<0. Based on this idea, Russian scientist Victor Veselago called a substance with a negative refractive index a metamaterial, also known as a supermedium. According to different application fields, metamaterials can be divided into double-negative metamaterials with negative permittivity and permeability, magnetic single-negative metamaterials with negative permeability, and electronegative metamaterials with negative permittivity. Super material. [0003] Sin...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 刘明海荣灿灿陈俊峰王圣明胡朝阳
Owner HUAZHONG UNIV OF SCI & TECH
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