Non-uniform metamaterial for converging electromagnetic waves

A metamaterial, non-uniform technology, applied in the field of metamaterials, can solve the problems of large size of focusing antenna, easy aging of medium, large loss, etc., to achieve the effect of enhancing the performance of convergent electromagnetic waves, flexible use, and low loss

Inactive Publication Date: 2020-01-14
中为联合创新(平潭)工程研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a non-uniform metamaterial for converging electromagnetic waves, which solves the problem that the focusing antenna used in the prior art to realize electromagnetic wave converging is bulky and heavy, which is not conducive to the use of miniaturization. The shape has great dependence, it is difficult to design flexibly, the loss is large, the medium is easy to age, and the cost is high

Method used

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  • Non-uniform metamaterial for converging electromagnetic waves
  • Non-uniform metamaterial for converging electromagnetic waves
  • Non-uniform metamaterial for converging electromagnetic waves

Examples

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Embodiment 1

[0027] Mix and dissolve 6 parts of ferric nitrate, 4 parts of nickel nitrate, 4 parts of zinc nitrate and 1 part of cobalt powder in 15 parts of deionized water, add 25% ethylene glycol to the mixed solution, and ultrasonically disperse until it is evenly dispersed. Put it in a water bath at 45°C, slowly add sodium hydroxide solution to the mixed solution, and at the same time, stir continuously at 300 rpm for 80 minutes to obtain a mixed solution, then crystallize and dry the mixed solution and pulverize it into fine powder to obtain doped Nickel-zinc ferrite magnetic powder, uniformly mix the obtained doped nickel-zinc ferrite magnetic powder with 7 parts of binder, 5 parts of plasticizer, and 10 parts of solvent to form a slurry, and ultrasonically disperse the slurry at 25kHz for 50 minutes , cast the slurry to make a ferrite green sheet and dry it, then paste a metal film on the upper and lower surfaces of the ferrite green sheet, and then roll and compact it with a magnet...

Embodiment 2

[0029] Mix and dissolve 7 parts of iron nitrate, 5 parts of nickel nitrate, 5 parts of zinc nitrate and 2 parts of cobalt powder in 20 parts of deionized water, add 25% ethylene glycol to the mixed solution, and ultrasonically disperse until it is evenly dispersed. Put it in a water bath at 45°C, slowly add sodium hydroxide solution to the mixed solution, and at the same time, stir continuously at 300 rpm for 80 minutes to obtain a mixed solution, then crystallize and dry the mixed solution and pulverize it into fine powder to obtain doped Nickel-zinc ferrite magnetic powder, uniformly mix the obtained doped nickel-zinc ferrite magnetic powder with 8 parts of binder, 6 parts of plasticizer, and 12 parts of solvent to form a slurry, and ultrasonically disperse the slurry at 25kHz for 50 minutes , cast the slurry to make a ferrite green sheet and dry it, then paste a metal film on the upper and lower surfaces of the ferrite green sheet, and then roll and compact it with a magneti...

Embodiment 3

[0031] Mix and dissolve 8 parts of ferric nitrate, 6 parts of nickel nitrate, 6 parts of zinc nitrate and 3 parts of cobalt powder in 25 parts of deionized water, add 25% ethylene glycol to the mixed solution, and ultrasonically disperse until it is evenly dispersed. Put it in a water bath at 45°C, slowly add sodium hydroxide solution to the mixed solution, and at the same time, stir continuously at 300 rpm for 80 minutes to obtain a mixed solution, then crystallize and dry the mixed solution and pulverize it into fine powder to obtain doped Nickel-zinc ferrite magnetic powder, uniformly mix the obtained doped nickel-zinc ferrite magnetic powder with 10 parts of binder, 7 parts of plasticizer, and 15 parts of solvent to form a slurry, and ultrasonically disperse the slurry at 25kHz for 50 minutes , casting the slurry to make a ferrite green sheet and drying it, then sticking a metal film on the upper and lower surfaces of the ferrite green sheet, rolling and compacting it with ...

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Abstract

The invention discloses a non-uniform metamaterial for converging electromagnetic waves, wherein the non-uniform metamaterial comprises a dielectric base plate, and a plurality of metal artificial structure units are uniformly distributed on the surface of the dielectric base plate. The invention relates to the technical field of metamaterials. According to the invention, the metal artificial structure unit comprises a base material and an artificial metal microstructure, wherein the artificial metal microstructure is positioned on the surface of the base material, the base material is made ofnickel-zinc ferrite, and the nickel-zinc ferrite comprises: 6-8 parts of ferric nitrate, 4-6 parts of nickel nitrate, 4-6 parts of zinc nitrate, 1-3 parts of cobalt powder, 7-10 parts of a binding agent, 5-7 parts of a plasticizer, 10-15 parts of a solvent and 15-25 parts of deionized water; and the electromagnetic wave converging performance of the metamaterial can be effectively enhanced through the nickel-zinc ferrite, the defect that the focusing antenna is used to perform electromagnetic wave converging in the prior art is solved, and the metamaterial is small in size, light in weight and flexible to use and has advantages of low loss and low cost.

Description

technical field [0001] The invention relates to the technical field of metamaterials, in particular to a heterogeneous metamaterial for converging electromagnetic waves. Background technique [0002] Metamaterial is a new type of material, which is composed of a substrate made of non-metallic materials and multiple artificial microstructures attached to the surface of the substrate or embedded in the substrate. The substrate can be virtually divided into rectangular array rows. A plurality of cube-shaped substrate units of cloth, each substrate unit is attached with an artificial microstructure to form a metamaterial unit, the entire metamaterial is composed of hundreds of thousands, millions or even hundreds of millions of such metamaterial units Just like a crystal is composed of countless lattices according to a certain arrangement, the artificial microstructure on each metamaterial unit is the same or not completely the same, and the artificial microstructure is a cylind...

Claims

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Application Information

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IPC IPC(8): C04B26/32C04B41/69H01Q15/00
CPCC04B26/32C04B41/009C04B41/51C04B41/69C04B2111/00844H01Q15/0086H01Q15/0093C04B22/085C04B14/34C04B24/02C04B22/062
Inventor 刘光平
Owner 中为联合创新(平潭)工程研究有限公司
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