CN102769210B - Wideband wave-absorbing material - Google Patents
Wideband wave-absorbing material Download PDFInfo
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- CN102769210B CN102769210B CN201210222245.XA CN201210222245A CN102769210B CN 102769210 B CN102769210 B CN 102769210B CN 201210222245 A CN201210222245 A CN 201210222245A CN 102769210 B CN102769210 B CN 102769210B
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Abstract
The invention discloses a wideband wave-absorbing material. The wideband wave-absorbing material comprises a copperplate bottom layer, a first metamaterial sheet layer and a second metamaterial sheet layer; the first metamaterial sheet layer comprises a first base material and a plurality of first artificial micro-structures arranged on the first base material; the second metamaterial sheet layer comprises a second base material and a plurality of second artificial micro-structures arranged on the second base material; and each first artificial micro-structure comprises a plurality of concentric metal rings and each second artificial micro-structure is a metal ring. According to the invention, the metamaterial principle is utilized to design the wave-absorbing material, and a plurality of layers of sub-units and micro-structure topological structures on the plurality of layers of sub-units are arranged to take the impedance matching and wideband wave-absorbing effects. The wideband wave-absorbing metamaterial has a very good wave-absorbing effect at 4-18 GHz.
Description
Technical field
The present invention relates to a kind of absorbing material, particularly relate to a kind of wideband and inhale ripple Meta Materials.
Background technology
Along with making rapid progress of scientific technological advance, be that technology, the various product of medium gets more and more with electromagnetic wave, the impact of electromagenetic wave radiation on environment also increases day by day.Such as, radio wave may cause interference to airport environment, causes airplane flight normally to take off; Mobile phone may disturb the work of various precise electronic medicine equipment; Even common computer, also can the electromagnetic wave of radiation carry information, it may be received and reappear beyond several kilometers, cause the leakage of the aspect information such as national defence, politics, economy, science and technology.Therefore, administer electromagnetic pollution, find and a kind ofly can keep out and weaken material---the absorbing material of electromagenetic wave radiation, become a large problem of material science.
Absorbing material is a class material that can absorb the electromagnetic wave energy projecting its surface, and it is comprising military affairs and other side is also widely used, such as stealthy machine, contact clothing etc.The primary condition of material electromagnetic wave absorption is: time on (1) electromagnetic wave incident to material, it can enter material internal to greatest extent, namely requires that material has matching properties; (2) the electromagnetism wave energy entering material internal promptly almost all attenuates, i.e. attenuation characteristic.
Existing absorbing material utilizes each material self to electromagnetic absorbent properties, mixed material is made to possess microwave absorbing property by the component designing different materials, this type of design of material is complicated and do not have large-scale promotion, the mechanical performance of this type of material is limited to the mechanical performance of material itself simultaneously, can not meet the demand of special occasions.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes a kind of wideband of Meta Materials Theoretical Design that utilizes and inhales ripple Meta Materials.This wideband suction ripple Meta Materials absorption frequency range is wide, absorbing property good, is with a wide range of applications.
The technical scheme that the present invention solves the employing of its technical problem is, propose a kind of wideband and inhale ripple Meta Materials, it comprises the second metamaterial sheet, the first metamaterial sheet and the metal back layer that set gradually along Electromagnetic Wave Propagation direction; Described first metamaterial sheet comprises the first base material and is arranged in multiple first man-made microstructure on the first base material, and described second metamaterial sheet comprises the second base material and is arranged in multiple second man-made microstructure on the second base material; Described first man-made microstructure comprises the metal ring of multiple concentric setting, and described second man-made microstructure is a metal ring.
Further, described first man-made microstructure comprises 6 metal rings arranged with one heart, and described 6 metal rings are respectively the first to the 6th metal ring from small to large by radius; The live width of the first to the 6th metal ring is equal, and thickness is equal, and the spacing of adjacent metal annulus is equal.
Further, the topology of described second man-made microstructure is identical with the 5th metal ring of described first man-made microstructure.
Further, the material of described first man-made microstructure and the second man-made microstructure is copper, and the thickness of described copper coin bottom equals described first man-made microstructure or the second man-made microstructure thickness.
Further, described first base material is FR-4 material, ceramic material, ferroelectric material or ferrite material.
Further, described second base material is FR-4 material, ceramic material, ferroelectric material or ferrite material.
Further, described first man-made microstructure passes through etching, brill is carved, electronics is carved or ion is attached on the first substrate surface quarter.
Further, described second man-made microstructure passes through etching, brill is carved, electronics is carved or ion is attached on the second substrate surface quarter.
Further, described second man-made microstructure is also coated with cover layer, described first base material, the second base material and tectal material are identical.
Further, described cover layer is also provided with impedance matching layer, the resistance value of described impedance matching layer is less than described cover layer resistance value.
The present invention utilizes meta-material principle design to inhale ripple Meta Materials, by arranging micro-structural topological structure on multilayer subelement and each subelement to reach the effect that impedance matching and wideband inhale ripple.Wideband of the present invention is inhaled ripple Meta Materials and is all had good wave-absorbing effect at 4 to 18GHZ.
Accompanying drawing explanation
Fig. 1 is the perspective view of the elementary cell forming Meta Materials;
Fig. 2 is the cutaway view that wideband of the present invention inhales ripple Meta Materials;
Fig. 3 is the perspective view that wideband of the present invention inhales the first metamaterial sheet in ripple Meta Materials;
Fig. 4 is the perspective view that wideband of the present invention inhales the second metamaterial sheet in ripple Meta Materials;
Fig. 5 is the suction ripple simulation result schematic diagram that wideband of the present invention inhales ripple Meta Materials.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Light, as electromagnetic one, it is when passing glass, because the wavelength of light is much larger than the size of atom, therefore we can use the univers parameter of glass, such as refractive index, instead of the details parameter of the atom of composition glass describes the response of glass to light.Accordingly, when research material is to other electromagnetic responses, in material, any yardstick also can with the univers parameter of material to electromagnetic response much smaller than the structure of electromagnetic wavelength, and such as DIELECTRIC CONSTANT ε and magnetic permeability μ describe.The structure often put by designing material makes the dielectric constant of material each point and magnetic permeability all identical or different, thus make the dielectric constant of material monolithic and magnetic permeability be certain rule arrangement, magnetic permeability and the dielectric constant of rule arrangement can make material have response macroscopically to electromagnetic wave, such as, converge electromagnetic wave, divergent electromagnetic ripple, electromagnetic wave absorption etc.The material of such magnetic permeability and dielectric constant with rule arrangement is referred to as Meta Materials.
As shown in Figure 1, Fig. 1 is the perspective view of the elementary cell forming Meta Materials.The elementary cell of Meta Materials comprises the base material 200 of man-made microstructure 100 and the attachment of this man-made microstructure.Man-made microstructure can be artificial metal's micro-structural, it has and produces the plane of response or three-dimensional topological structure to incident electromagnetic wave electric field and/or magnetic field, change pattern and/or the size of the artificial metal's micro-structural in each Meta Materials elementary cell, each Meta Materials elementary cell can be changed to the response of incident electromagnetic wave.Multiple Meta Materials elementary cell arranges according to certain rules, and Meta Materials can be made to have the response of macroscopic view to electromagnetic wave.Because Meta Materials entirety need have macroscopical electromagnetic response to incident electromagnetic wave, therefore each Meta Materials elementary cell need form continuous response to the response of incident electromagnetic wave, this requires that the size of each Meta Materials elementary cell is less than incident electromagnetic wave 1/5th wavelength, is preferably incident electromagnetic wave 1/10th wavelength.During this section describes, Meta Materials entirety being divided into multiple Meta Materials elementary cell is a kind of man-made division method, but should know that this kind of division methods is only for convenience of description, should not regard Meta Materials as spliced by multiple Meta Materials elementary cell or assemble, in practical application, Meta Materials artificial metal's micro-structural is arranged on base material and can forms, and technique is simple and with low cost.
The present invention utilizes above-mentioned meta-material principle to design wideband to inhale ripple Meta Materials, with Fig. 1 unlike, the elementary cell that the present invention inhales ripple Meta Materials comprises multilayer subelement, and every subelement is all attached with different micro-structurals.The effect that impedance matching and wideband inhale ripple is realized by the arrangement designing different micro-structurals.
Please refer to Fig. 2, Fig. 2 is the cutaway view that wideband of the present invention inhales ripple Meta Materials.Along Electromagnetic Wave Propagation direction, wideband of the present invention is inhaled ripple Meta Materials and is comprised the second metamaterial sheet 2, first metamaterial sheet 1 and metal back layer 3.In the present embodiment, metal back layer 3 is made up of fine copper plate.As shown in Figure 3, it comprises the first base material 10 and is arranged in multiple first man-made microstructure 11 on the first base material 10 perspective view of the first metamaterial sheet 1; As shown in Figure 4, it comprises the second base material 20 and is arranged in multiple second man-made microstructure 21 on the second base material 20 perspective view of the second metamaterial sheet 2.
First man-made microstructure 11 comprises the metal ring of multiple concentric setting, in the present embodiment, comprise 6 metal rings arranged with one heart, 6 metal rings are respectively the first to the 6th metal ring from small to large by radius, the live width of each metal ring is equal, thickness is equal, and the spacing of adjacent metal annulus is equal.
Second man-made microstructure 21 is made up of a metal ring, and the size of this metal ring is identical with the 5th metal ring in the first man-made microstructure 11.
The material of the first base material 10 and the second base material 20 can identical also can be different, its material can be chosen for FR4 material, ferroelectric material, ferrite material or ceramic material etc.Can ground be imagined, the absorbing property of wideband of the present invention suction ripple Meta Materials when the material with certain absorbing property chosen by the first base material 10 and the second base material 20, can be made better.
The thickness of bottom 3 equals the thickness of the metal ring in the first man-made microstructure 11 and the second man-made microstructure 21.
The material of the metal ring in the first man-made microstructure 11 and the second man-made microstructure 21 can be copper, silver, aluminium or other conducting metals, its by etching, bore carve, electronics is carved, ion quarter etc. is attached to the first base material 10 and the second base material 20 on the surface.
In the present invention; multiple first man-made microstructure 11 is held between the first base material 10 and the second base material 20; in order to protect the second man-made microstructure 21, the present invention is also coated with cover layer 4 in the second man-made microstructure 21, and the material of cover layer 4 is identical with the second base material 20 material.
Further, for making electromagnetic wave incident can not cause a large amount of reflection because impedance variation is excessive when wideband of the present invention inhales ripple Meta Materials, the present invention is also provided with impedance matching layer 5 on cover layer 4.The resistance value of impedance matching layer 5 is less than the resistance value of the second base material 20, makes impedance transition mechanism.
Utilizing CST(Computer Simulation Technology) software emulation wideband of the present invention inhales the absorbing property of ripple Meta Materials, and simulation result is as shown in Figure 5.As can be seen from Figure 5, the suction ripple frequency range that wideband of the present invention inhales ripple Meta Materials is wider, all can reach the wave-absorbing effect of-5 to-20dB at 4 to 18GHZ, and wherein in 8.5 to 13GHZ frequency, absorbing property is best, can reach the wave-absorbing effect of-15 to-20dB.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (8)
1. wideband inhales a ripple Meta Materials, it is characterized in that: comprise the second metamaterial sheet, the first metamaterial sheet and the metal back layer that set gradually along Electromagnetic Wave Propagation direction; Described first metamaterial sheet comprises the first base material and is arranged in multiple first man-made microstructure on the first base material, and described second metamaterial sheet comprises the second base material and is arranged in multiple second man-made microstructure on the second base material; Described first man-made microstructure comprises 6 metal rings arranged with one heart, described 6 metal rings are respectively the first to the 6th metal ring from small to large by radius, the live width of the first to the 6th metal ring is equal, and thickness is equal, and the spacing of adjacent metal annulus is equal; Described second man-made microstructure is a metal ring, and the topology of described second man-made microstructure is identical with the 5th metal ring of described first man-made microstructure.
2. wideband as claimed in claim 1 inhales ripple Meta Materials, and it is characterized in that: the material of described first man-made microstructure and the second man-made microstructure is copper, the thickness of described metal back layer equals described first man-made microstructure or the second man-made microstructure thickness.
3. wideband as claimed in claim 1 inhales ripple Meta Materials, it is characterized in that: described first base material is FR-4 material, ceramic material, ferroelectric material or ferrite material.
4. wideband as claimed in claim 1 inhales ripple Meta Materials, it is characterized in that: described second base material is FR-4 material, ceramic material, ferroelectric material or ferrite material.
5. wideband as claimed in claim 1 inhales ripple Meta Materials, it is characterized in that: described first man-made microstructure passes through etching, brill is carved, electronics is carved or ion is attached on the first substrate surface quarter.
6. wideband as claimed in claim 1 inhales ripple Meta Materials, it is characterized in that: described second man-made microstructure passes through etching, brill is carved, electronics is carved or ion is attached on the second substrate surface quarter.
7. wideband as claimed in claim 1 or 2 inhales ripple Meta Materials, and it is characterized in that: described second man-made microstructure is also coated with cover layer, described first base material, the second base material and tectal material are identical.
8. wideband as claimed in claim 7 inhales ripple Meta Materials, and it is characterized in that: described cover layer is also provided with impedance matching layer, the resistance value of described impedance matching layer is less than described cover layer resistance value.
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| CN102769210B true CN102769210B (en) | 2014-12-24 |
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Families Citing this family (16)
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| CN103582401B (en) * | 2012-08-03 | 2018-05-22 | 深圳光启创新技术有限公司 | Broadband absorbing Meta Materials |
| CN103236581B (en) * | 2013-04-09 | 2015-07-08 | 江苏大学 | Left-handed material latticed patch antenna with multi-layer composite heterostructure |
| CN103474727B (en) * | 2013-09-14 | 2015-09-02 | 电子科技大学 | A kind of performance regulate and control method of multi-layer metamaterial unit structure |
| CN104682010A (en) * | 2013-12-03 | 2015-06-03 | 深圳光启创新技术有限公司 | Wave-transparent meta-material |
| CN105086934A (en) * | 2014-05-06 | 2015-11-25 | 深圳光启创新技术有限公司 | Microwave absorbing composite material and preparation method therefor |
| CN104411153B (en) * | 2014-12-15 | 2017-05-24 | 南京大学 | Polarized insensitive sub-wavelength three-dimensional wave absorption structure |
| CN106341974B (en) * | 2015-07-10 | 2019-10-15 | 深圳光启尖端技术有限责任公司 | A kind of absorbing meta-material and inhale wave apparatus |
| CN106684172B (en) * | 2015-11-09 | 2018-04-27 | 中蕊（武汉）光电科技有限公司 | A kind of silicon avalanche photodiode component and preparation method thereof |
| CN107946776A (en) * | 2017-11-21 | 2018-04-20 | 山西大学 | A kind of multiband absorbing meta-material |
| CN107919534A (en) * | 2017-12-10 | 2018-04-17 | 安阳师范学院 | Five insensitive frequency band Meta Materials wave absorbing devices of a kind of terahertz wave band polarization |
| CN108601317B (en) * | 2018-05-25 | 2020-11-10 | 浙江师范大学 | Preparation and application of broadband light metamaterial wave-absorbing structure |
| CN109862769B (en) * | 2019-01-28 | 2021-03-26 | 深圳市佳晨科技有限公司 | Ultra-thin and ultra-wide spectrum wave-absorbing material and preparation method thereof |
| CN109786973B (en) * | 2019-01-31 | 2021-03-16 | 浙江师范大学 | Chiral microwave absorption metamaterial and preparation method thereof |
| US10905038B1 (en) * | 2019-11-19 | 2021-01-26 | Google Llc | Electromagnetic interference (“EMI”) sheet attenuators |
| CN111817022B (en) * | 2020-07-13 | 2021-11-16 | 中国电子科技集团公司第三十三研究所 | Broadband ultrathin wave-absorbing metamaterial for visual window of aircraft |
| WO2023228368A1 (en) * | 2022-05-26 | 2023-11-30 | ソニーグループ株式会社 | Wave control medium, wave control element, wave control member, and wave control device |
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Effective date of registration: 20210705 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |