CN102800991B - Wideband absorbing meta-material - Google Patents
Wideband absorbing meta-material Download PDFInfo
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- CN102800991B CN102800991B CN201210275244.1A CN201210275244A CN102800991B CN 102800991 B CN102800991 B CN 102800991B CN 201210275244 A CN201210275244 A CN 201210275244A CN 102800991 B CN102800991 B CN 102800991B
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Abstract
The invention discloses a wideband absorbing meta-material. The wideband absorbing meta-material is virtually divided into a plurality of basic units. The basic units comprise multilayer subunits which include substrates and microstructures attached on the substrates. Topology shapes of the microstructures on each layer subunit are the same. Along a propagation direction of electromagnetic waves, sizes of the microstructures on each layer subunit gradually increase. The absorbing meta-material is designed by using meta-material principles. Through setting the multilayer subunits and the microstructures with gradually changed sizes on each layer subunit, effects of impedance matching and wideband wave-absorbing are achieved. In an interval of 4.2GHz to 20GHz, electromagnetic wave attenuation degree of the wideband absorbing meta-material reaches 5dB to 14 dB. The wideband absorbing meta-material has a wide wave-absorbing frequency range and good absorbing effect.
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, described wideband is inhaled ripple Meta Materials and is virtually divided into multiple elementary cell, described elementary cell comprises multilayer subelement, described subelement comprises base material and is attached to the micro-structural on base material, micro-structural topology on each subelement is identical, and along Electromagnetic Wave Propagation direction, the microstructure size on each subelement increases gradually.
Further, micro-structural on described each subelement is made up of the one or more first basic micro-structural and the one or more second basic micro-structural, described first basic micro-structural is complete annular micro-structural, and the described second basic micro-structural is that circumferentially spaced set has the annular micro-structural of four identical breach; Described one or more first basic micro-structural and the one or more second basic micro-structural are arranged with one heart.
Further, the micro-structural on described each subelement comprises one first basic microstructure aspects and one second basic microstructure aspects, and the radius of the described first basic microstructure aspects is less than the radius of the described second basic microstructure aspects.
Further, it is r that the micro-structural on described each subelement comprises radius
1and r
2two first basic micro-structurals and one second basic micro-structural, the described second basic micro-structural radius is greater than r
2, r
2be greater than r
1.
Further, the micro-structural on described each subelement comprises one first basic micro-structural and radius is r
1' and r
2' two second basic micro-structurals, r
2' be greater than r
1', r
1' be greater than the described first basic micro-structural radius.
Further, described elementary cell comprises nine subelement, and the microstructure size on each subelement is along direction of wave travel linearly equal proportion increase, and proportional numbers is 0.3-1.5.
Further, described base material is made up of FR4 material.
The present invention utilizes meta-material principle design to inhale ripple Meta Materials, is reached the effect of impedance matching and wideband suction ripple by the microstructure size gradual change arranged on multilayer subelement and each subelement.Wideband of the present invention is inhaled ripple Meta Materials and reach 5dB to 14dB to the electromagnetic degree of decay in 4.2GHZ to 20GHZ interval, and it is wide that it inhales ripple frequency range, and wave-absorbing effect is good.
Accompanying drawing explanation
Fig. 1 is the perspective view of the elementary cell forming Meta Materials;
Fig. 2 is that wideband of the present invention inhales the schematic diagram forming the first basic structure of the topological structure of each subelement in ripple Meta Materials;
Fig. 3 is that wideband of the present invention inhales the schematic diagram forming the second basic structure of the topological structure of each subelement in ripple Meta Materials;
Fig. 4 is the schematic diagram that wideband of the present invention inhales the first preferred embodiment of the topological structure of the micro-structural of in ripple Meta Materials, each subelement adhering to;
Fig. 5 is the schematic diagram that wideband of the present invention inhales the second preferred embodiment of the topological structure of the micro-structural of in ripple Meta Materials, each subelement adhering to;
Fig. 6 is the schematic diagram that wideband of the present invention inhales the 3rd preferred embodiment of the topological structure of the micro-structural of in ripple Meta Materials, each subelement adhering to;
Fig. 7 is the perspective view that wideband of the present invention inhales a preferred embodiment of the elementary cell of ripple Meta Materials;
Fig. 8 is the simulation result schematic diagram of the wideband suction ripple Meta Materials of elementary cell formation as shown in Figure 7.
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 2 of man-made microstructure 1 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 is arranged on base material in artificial metal's micro-structural cycle and can forms, and technique is simple and with low cost.Namely cycle arrangement refers to that the artificial metal's micro-structural in each Meta Materials elementary cell of above-mentioned artificial division can produce continuous print electromagnetic response to incident electromagnetic wave.
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.The micro-structural of each subelement of the present invention has identical topology but is of different sizes, and along direction of wave travel, the microstructure size of subelement increases gradually.Experimentally known, under same substrate condition, the size of micro-structural is larger, the refractive index of the subelement of its correspondence is larger, due to the microstructure size gradual change on subelement each in the present invention, when electromagnetic wave incident, can reduce because the refractive index electromagnetic wave caused that suddenlys change is reflected the gain loss that brings, thus realize the effect of impedance matching.Meanwhile, the micro-structural of each subelement all has wave-absorbing effect, and the wave-absorbing effect superposition of each subelement reaches wideband, efficient performance of inhaling ripple.
The topological structure of the micro-structural that each subelement adheres to can be combined by the basic structure shown in Fig. 2, Fig. 3.The basic microstructure aspects of shown in Fig. 2 first is complete annular micro-structural, and the basic microstructure aspects of second shown in Fig. 3 is that circumferentially spaced set has the annular micro-structural of 4 identical gap structures.The topological structure of each subelement can be made up of above-mentioned two kinds of basic structures of identical or different quantity, such as shown in Figure 4, in Fig. 4, the topological structure of each subelement comprises one first basic micro-structural and one second basic micro-structural, and the first basic micro-structural and the second basic micro-structural arrange with one heart and the second basic micro-structural radius is greater than the first basic micro-structural radius.
As shown in Figure 5, in Fig. 5, the topological structure of each subelement comprises radius and is respectively r
1and r
2two first basic micro-structurals and one second basic micro-structural, wherein two first basic micro-structurals and one second basic micro-structural are arranged and the second basic micro-structural radius is greater than r with one heart
2, r
2be greater than r
1.
As shown in Figure 6, in Fig. 6, the topological structure of each subelement comprises one first basic micro-structural and radius is respectively r
1' and r
2' two second basic micro-structurals, wherein the first basic micro-structural and two second basic micro-structurals are arranged and r with one heart
2' be greater than r
1', r
1' be greater than the first basic micro-structural radius.
Can also have other different types of compound modes a lot of in conjunction with above-mentioned explanation, this is no longer going to repeat them.
As shown in Figure 7, Fig. 7 is the structural representation of a preferred embodiment of the elementary cell of wideband wave absorbing material of the present invention.In Fig. 7, the elementary cell that wideband inhales ripple Meta Materials comprises nine subelement, and every subelement includes base material and is attached to the micro-structural on base material.Each base material material is identical, is FR4 material in the present embodiment.Micro-structural topology on each base material is identical, is topology shown in Fig. 4.Along direction of wave travel, the microstructure size on each base material increases gradually.The rule that size increases can be the increase of linear equal proportion and also can be the modes such as index increase, and adopt linear equal proportion to increase in the present embodiment, proportional numbers is 0.3-1.5.
The S11 parameters simulation design sketch that Fig. 8 utilizes CST (Computer Simulation Technology) simulation software to obtain for the wideband wave absorbing material shown in Fig. 7.As can be seen from Figure 8, the wideband suction ripple Meta Materials suction ripple frequency range of the present embodiment is wide, absorbing property good, has good wave-absorbing effect between 4.2GHZ to 20GHZ, and electromagnetic wave attenuation degree is 5dB to 14dB.
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 (6)
1. a wideband inhales ripple Meta Materials, it is characterized in that: described wideband is inhaled ripple Meta Materials and is virtually divided into multiple elementary cell, described elementary cell comprises multilayer subelement, described subelement comprises base material and is attached to the micro-structural on base material, micro-structural topology on each subelement is identical, along Electromagnetic Wave Propagation direction, the microstructure size on each subelement increases gradually;
Micro-structural on described each subelement is made up of the one or more first basic micro-structural and the one or more second basic micro-structural, described first basic micro-structural is complete annular micro-structural, and the described second basic micro-structural is that circumferentially spaced set has the annular micro-structural of four identical breach; Described one or more first basic micro-structural and the one or more second basic micro-structural are arranged with one heart.
2. wideband as claimed in claim 1 inhales ripple Meta Materials, it is characterized in that: the micro-structural on described each subelement comprises one first basic micro-structural and one second basic micro-structural, the radius of the described first basic micro-structural is less than the radius of the described second basic micro-structural.
3. wideband as claimed in claim 1 inhales ripple Meta Materials, it is characterized in that: it is r that the micro-structural on described each subelement comprises radius
1and r
2two first basic micro-structurals and one second basic micro-structural, the described second basic micro-structural radius is greater than r
2, r
2be greater than r
1.
4. wideband as claimed in claim 1 inhales ripple Meta Materials, it is characterized in that: the micro-structural on described each subelement comprises one first basic micro-structural and radius is r
1' and r
2' two second basic micro-structurals, r
2' be greater than r
1', r
1' be greater than the described first basic micro-structural radius.
5. wideband as claimed in claim 2 inhales ripple Meta Materials, it is characterized in that: described elementary cell comprises nine subelement, the microstructure size on each subelement along direction of wave travel linearly equal proportion increase, proportional numbers be 0.3 ?1.5.
6. wideband as claimed in claim 5 inhales ripple Meta Materials, it is characterized in that: described base material is made up of FR4 material.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275244.1A CN102800991B (en) | 2012-08-03 | 2012-08-03 | Wideband absorbing meta-material |
| EP13824829.9A EP2882037B1 (en) | 2012-07-31 | 2013-07-31 | Wide-frequency wave-absorbing metamaterial, electronic device and method for obtaining wide-frequency wave-absorbing metamaterial |
| PCT/CN2013/080523 WO2014019514A1 (en) | 2012-07-31 | 2013-07-31 | Wide-frequency wave-absorbing metamaterial, electronic device and method for obtaining wide-frequency wave-absorbing metamaterial |
| US14/602,206 US9837725B2 (en) | 2012-07-31 | 2015-01-21 | Wide-frequency wave-absorbing metamaterial, electronic device and method for obtaining wide-frequency wave-absorbing metamaterial |
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| CN201210275244.1A CN102800991B (en) | 2012-08-03 | 2012-08-03 | Wideband absorbing meta-material |
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| CN102800991A CN102800991A (en) | 2012-11-28 |
| CN102800991B true CN102800991B (en) | 2015-03-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014019514A1 (en) * | 2012-07-31 | 2014-02-06 | 深圳光启创新技术有限公司 | Wide-frequency wave-absorbing metamaterial, electronic device and method for obtaining wide-frequency wave-absorbing metamaterial |
| CN103269574B (en) * | 2013-04-24 | 2015-12-09 | 电子科技大学 | A kind of ultrathin wideband inhales ripple Meta Materials |
| CN106058457B (en) * | 2016-05-13 | 2019-03-15 | 武汉灵动时代智能技术股份有限公司 | A kind of ultra-thin low pass frequency selects Meta Materials wave transparent antenna house |
| CN106058458B (en) * | 2016-05-13 | 2019-03-15 | 武汉灵动时代智能技术股份有限公司 | A kind of broadband intelligence Meta Materials wide-angle wave transparent antenna house and its antenna system |
| CN109994839A (en) * | 2017-12-29 | 2019-07-09 | 深圳光启尖端技术有限责任公司 | A kind of three-dimensional metamaterial wave-absorber |
| CN111585034B (en) * | 2020-06-02 | 2021-09-07 | 中国人民解放军军事科学院国防科技创新研究院 | Design method of impedance matching type metamaterial |
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| JP2002057486A (en) * | 2000-06-02 | 2002-02-22 | Dainippon Printing Co Ltd | Radio wave absorber |
| CN200986957Y (en) * | 2006-12-12 | 2007-12-05 | 吉林大学 | Dual-bandpass frequency selecting surface film |
| CN101840735A (en) * | 2009-03-17 | 2010-09-22 | 西北工业大学 | Meta-material microwave absorber based on dendritic structure |
| CN102480000A (en) * | 2011-03-18 | 2012-05-30 | 深圳光启高等理工研究院 | Impedance matching element |
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2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002057486A (en) * | 2000-06-02 | 2002-02-22 | Dainippon Printing Co Ltd | Radio wave absorber |
| CN200986957Y (en) * | 2006-12-12 | 2007-12-05 | 吉林大学 | Dual-bandpass frequency selecting surface film |
| CN101840735A (en) * | 2009-03-17 | 2010-09-22 | 西北工业大学 | Meta-material microwave absorber based on dendritic structure |
| CN102480000A (en) * | 2011-03-18 | 2012-05-30 | 深圳光启高等理工研究院 | Impedance matching element |
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Effective date of registration: 20210415 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. |
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