CN102800991A - Wideband absorbing meta-material - Google Patents
Wideband absorbing meta-material Download PDFInfo
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- CN102800991A CN102800991A CN2012102752441A CN201210275244A CN102800991A CN 102800991 A CN102800991 A CN 102800991A CN 2012102752441 A CN2012102752441 A CN 2012102752441A CN 201210275244 A CN201210275244 A CN 201210275244A CN 102800991 A CN102800991 A CN 102800991A
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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, relate in particular to a kind of wideband and inhale the ultra material of ripple.
Background technology
Along with making rapid progress of scientific technological advance, be that the technology of media, various product are more and more with the electromagnetic wave, electromagenetic wave radiation also increases the influence of environment day by day.Such as, radio wave possibly cause interference to airport environment, causes airplane flight normally to take off; Mobile phone may disturb the work of various precise electronic medicine equipments; Even common computer also can radiation carry the electromagnetic wave of information, it possibly be received beyond several kilometers and reappear, and causes the leakage of aspect information such as national defence, politics, economy, science and technology.Therefore, administer electromagnetic pollution, seek a kind of material---the absorbing material that can keep out and weaken electromagenetic wave radiation, become a big problem of material science.
Absorbing material is one type of material that can absorb the electromagnetic wave energy that projects its surface, and it is comprising that military affairs and others also are widely used, such as stealthy machine, contact clothing etc.The electromagnetic primary condition of absorbed is: when (1) electromagnetic wave incided on the material, it can get into material internal to greatest extent, promptly required material to have matching properties; (2) the electromagnetism wave energy of entering material internal promptly almost all attenuates, i.e. attenuation characteristic.
Existing absorbing material utilizes each material self to the absorption of electromagnetic wave performance; Component through the design different materials makes mixed material possess microwave absorbing property; This type of material complex design and do not have large-scale promotion property; The mechanical performance of this type of material is subject to the mechanical performance of material itself simultaneously, can not satisfy the demand of special occasions.
Summary of the invention
Technical problem to be solved by this invention is, to the above-mentioned deficiency of prior art, proposes a kind of wideband of ultra materials theory design that utilizes and inhales the ultra material of ripple.The ultra absorbed frequency range of this wideband suction ripple is wide, absorbing property good, is with a wide range of applications.
The technical scheme that the present invention solves its technical problem employing is; Propose a kind of wideband and inhale the ultra material of ripple, said wideband is inhaled the ultra material of ripple and is virtually divided into a plurality of elementary cells, and said elementary cell comprises the multilayer subelement; Said subelement comprises base material and is attached to the micro-structural on the base material; Micro-structural topology on each straton unit is identical, and along the electromagnetic wave propagation direction, the microstructure size on each straton unit increases gradually.
Further; Micro-structural on said each straton unit is made up of the one or more first basic micro-structural and the one or more second basic micro-structural; The said first basic micro-structural is complete annular micro-structural, and the said second basic micro-structural is provided with the annular micro-structural of four identical breach for the circumference equal intervals; The said one or more first basic micro-structural and the one or more second basic micro-structural are provided with one heart.
Further, the micro-structural on said each straton unit comprises one first basic micro-structural shape and one second basic micro-structural shape, and the radius of the said first basic micro-structural shape is less than the radius of the said second basic micro-structural shape.
Further, the micro-structural on said each straton unit comprises that radius is r
1And r
2Two first basic micro-structurals and one second basic micro-structural, the said second basic micro-structural radius is greater than r
2, r
2Greater than r
1
Further, the micro-structural on said each straton unit comprises that one first basic micro-structural and radius are r
1' and r
2' two second basic micro-structurals, r
2' greater than r
1', r
1' greater than the said first basic micro-structural radius.
Further, said elementary cell comprises nine straton unit, and the microstructure size on each straton unit is linear equal proportion along direction of wave travel and increases, and proportional numbers is 0.3-1.5.
Further, said base material is processed by the FR4 material.
The present invention utilizes ultra material principle design to inhale the ultra material of ripple, through the effect that microstructure size gradual change on multilayer subelement and each the straton unit reaches impedance matching and wideband suction ripple is set.Wideband of the present invention is inhaled the ultra material of ripple and in 4.2GHZ to 20GHZ interval, the attenuation of Electromagnetic degree is reached 5dB to 14dB, and it is wide that it inhales the ripple frequency range, and wave-absorbing effect is good.
Description of drawings
Fig. 1 is the perspective view of the elementary cell of the ultra material of formation;
Fig. 2 inhales the sketch map of first basic structure of the topological structure that constitutes each straton unit in the ultra material of ripple for wideband of the present invention;
Fig. 3 inhales the sketch map of second basic structure of the topological structure that constitutes each straton unit in the ultra material of ripple for wideband of the present invention;
Fig. 4 inhales the sketch map of first preferred embodiment of the topological structure of the micro-structural of adhering on each straton unit in the ultra material of ripple for wideband of the present invention;
Fig. 5 inhales the sketch map of second preferred embodiment of the topological structure of the micro-structural of adhering on each straton unit in the ultra material of ripple for wideband of the present invention;
Fig. 6 inhales the sketch map of the 3rd preferred embodiment of the topological structure of the micro-structural of adhering on each straton unit in the ultra material of ripple for wideband of the present invention;
Fig. 7 is the perspective view of a preferred embodiment of the elementary cell of the ultra material of wideband suction ripple of the present invention;
Fig. 8 inhales the simulation result sketch map of the ultra material of ripple for the wideband that is made up of elementary cell shown in Figure 7.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Light, as electromagnetic a kind of, 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, and the details parameter of the atom of for example refractive index, rather than composition glass is described the response of glass to light.Accordingly, when research material was to other electromagnetic responses, any yardstick also can be used the univers parameter of material much smaller than the structure of electromagnetic wavelength to electromagnetic response in the material, and for example DIELECTRIC CONSTANTS and magnetic permeability μ describe.Structure through every of designing material makes the dielectric constant of material each point all identical or different with magnetic permeability; Thereby making dielectric constant and the magnetic permeability of material monolithic be certain rule arranges; Magnetic permeability that rule is arranged and dielectric constant can make material that electromagnetic wave is had the response on the macroscopic view, for example converge electromagnetic wave, divergent electromagnetic ripple, absorb electromagnetic wave etc.Such has magnetic permeability that rule arranges and the material of dielectric constant is referred to as ultra material.
As shown in Figure 1, Fig. 1 is the perspective view of the elementary cell of the ultra material of formation.The elementary cell of ultra material comprises the base material 2 that artificial micro-structural 1 and this artificial micro-structural are adhered to.Artificial micro-structural can be artificial metal's micro-structural; It has plane or three-dimensional topological structure to incident electromagnetic wave electric field and/or magnetic field generation response; Change the pattern and/or the size of the artificial metal's micro-structural on each ultra material elementary cell, can change of the response of each ultra material elementary cell incident electromagnetic wave.A plurality of ultra material elementary cells are arranged according to certain rules, can make ultra material electromagnetic wave had the response of macroscopic view.Because ultra material monolithic needs that incident electromagnetic wave is had macroscopical electromagnetic response; Therefore each ultra material elementary cell need form continuous response to the response of incident electromagnetic wave; This size that requires each ultra material elementary cell is preferably incident electromagnetic wave 1/10th wavelength less than incident electromagnetic wave 1/5th wavelength.During this section is described; To surpass material monolithic, to be divided into a plurality of ultra material elementary cells are a kind of man-made division methods; But it is convenient to know that this kind division methods is merely description; Should not regard ultra material as by a plurality of ultra material elementary cells splicings or assemble, ultra material is that artificial metal's micro-structural cycle is arranged on the base material and can constitutes in the practical application, and technology is simple and with low cost.Artificial metal's micro-structural that cycle arranges on each the ultra material elementary cell that promptly refers to above-mentioned artificial division can produce continuous electromagnetic response to incident electromagnetic wave.
The present invention utilizes above-mentioned ultra material principle design wideband to inhale the ultra material of ripple, and different with Fig. 1 is, the elementary cell that the present invention inhales the ultra material of ripple comprises the multilayer subelement, and every straton all is attached with different micro-structurals on the unit.Through designing the effect that arranging of different micro-structurals realizes that impedance matching and wideband are inhaled ripple.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.Can know according to experiment; Under the same substrate condition, the size of micro-structural is big more, and the refractive index of the subelement that it is corresponding is big more; Because the microstructure size gradual change among the present invention on each straton unit; When electromagnetic wave incident, can reduce because the gain loss that the electromagnetic wave that refractive index sudden change causes is reflected and brings, thereby realize impedance matching effect.Simultaneously, the micro-structural of each straton unit all has wave-absorbing effect, and the stack of the wave-absorbing effect of each straton unit reaches wideband, efficiently inhales the performance of ripple.
The topological structure of the micro-structural of adhering on each straton unit can be combined by Fig. 2, basic structure shown in Figure 3.The first basic micro-structural shown in Figure 2 is shaped as complete annular micro-structural, and the second basic micro-structural shown in Figure 3 is shaped as the annular micro-structural that the circumference equal intervals is provided with 4 identical breach structures.The topological structure of each straton unit can be made up of above-mentioned two kinds of basic structures of identical or different quantity; For example as shown in Figure 4; Among Fig. 4; The topological structure of each straton unit comprises one first basic micro-structural and one second basic micro-structural, and the concentric setting of the first basic micro-structural and the second basic micro-structural and the second basic micro-structural radius are greater than the first basic micro-structural radius.
As shown in Figure 5, among Fig. 5, the topological structure of each straton unit comprises that radius 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 be provided with one heart and the second basic micro-structural radius greater than r
2, r
2Greater than r
1
As shown in Figure 6, among Fig. 6, the topological structure of each straton unit comprises that one first basic micro-structural and radius are respectively r
1' and r
2' two second basic micro-structurals, wherein the first basic micro-structural and two second basic micro-structurals are provided with and r with one heart
2' greater than r
1', r
1' greater than the first basic micro-structural radius.
In conjunction with above-mentioned explanation a lot of other different types of compound modes can also be arranged, give unnecessary details no longer one by one at this.
As shown in Figure 7, Fig. 7 is the structural representation of a preferred embodiment of the elementary cell of wideband absorbing material of the present invention.Among Fig. 7, the elementary cell that wideband is inhaled the ultra material of ripple comprises nine straton unit, and every straton unit includes base material and is attached to the micro-structural on the base material.Each base material material is identical, is the FR4 material in the present embodiment.Micro-structural topology on each base material is identical, is topology shown in Figure 4.Along direction of wave travel, the microstructure size on each base material increases gradually.The rule that size increases can be linear equal proportion and increases modes such as also can be the index increase, adopts linear equal proportion to increase in the present embodiment, and 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 wideband absorbing material shown in Figure 7.As can beappreciated from fig. 8, the ultra material suction of the wideband of present embodiment suction ripple ripple frequency range is wide, absorbing property good, between 4.2GHZ to 20GHZ, has good wave-absorbing effect, and the electromagnetic wave attenuation degree is 5dB to 14dB.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (7)
1. a wideband is inhaled the ultra material of ripple; It is characterized in that: said wideband is inhaled the ultra material of ripple and is virtually divided into a plurality of elementary cells; Said elementary cell comprises the multilayer subelement, and said subelement comprises base material and be attached to the micro-structural on the base material that the micro-structural topology on each straton unit is identical; Along the electromagnetic wave propagation direction, the microstructure size on each straton unit increases gradually.
2. wideband as claimed in claim 1 is inhaled the ultra material of ripple; It is characterized in that: the micro-structural on said each straton unit is made up of the one or more first basic micro-structural and the one or more second basic micro-structural; The said first basic micro-structural is complete annular micro-structural, and the said second basic micro-structural is provided with the annular micro-structural of four identical breach for the circumference equal intervals; The said one or more first basic micro-structural and the one or more second basic micro-structural are provided with one heart.
3. wideband as claimed in claim 2 is inhaled the ultra material of ripple; It is characterized in that: the micro-structural on said each straton unit comprises one first basic micro-structural shape and one second basic micro-structural shape, and the radius of the said first basic micro-structural shape is less than the radius of the said second basic micro-structural shape.
4. wideband as claimed in claim 2 is inhaled the ultra material of ripple, and it is characterized in that: the micro-structural on said each straton unit comprises that radius is r
1And r
2Two first basic micro-structurals and one second basic micro-structural, the said second basic micro-structural radius is greater than r
2, r
2Greater than r
1
5. wideband as claimed in claim 2 is inhaled the ultra material of ripple, and it is characterized in that: the micro-structural on said each straton unit comprises that one first basic micro-structural and radius are r
1' and r
2' two second basic micro-structurals, r
2' greater than r
1', r
1' greater than the said first basic micro-structural radius.
6. wideband as claimed in claim 3 is inhaled the ultra material of ripple, and it is characterized in that: said elementary cell comprises nine straton unit, and the microstructure size on each straton unit is linear equal proportion along direction of wave travel and increases, and proportional numbers is 0.3-1.5.
7. wideband as claimed in claim 6 is inhaled the ultra material of ripple, and it is characterized in that: said base material is processed by the 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 |
| 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 |
| 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 |
| 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 true CN102800991A (en) | 2012-11-28 |
| CN102800991B CN102800991B (en) | 2015-03-11 |
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Cited By (6)
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| CN103269574A (en) * | 2013-04-24 | 2013-08-28 | 电子科技大学 | Super-thin broadband wave-absorbing metamaterial |
| 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 |
| CN106058458A (en) * | 2016-05-13 | 2016-10-26 | 武汉市迅捷时代信息技术有限公司 | Broadband intelligent metamaterial large angle wave-transparent radome and antenna system thereof |
| CN106058457A (en) * | 2016-05-13 | 2016-10-26 | 武汉市迅捷时代信息技术有限公司 | Ultra-thin low-pass and frequency-selective metamaterial wave-transparent radome and antenna system thereof |
| 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 |
| CN111585034A (en) * | 2020-06-02 | 2020-08-25 | 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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Cited By (10)
| 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 |
| US9837725B2 (en) | 2012-07-31 | 2017-12-05 | Kuang-Chi Innovative Technology Ltd. | Wide-frequency wave-absorbing metamaterial, electronic device and method for obtaining wide-frequency wave-absorbing metamaterial |
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| CN106058458A (en) * | 2016-05-13 | 2016-10-26 | 武汉市迅捷时代信息技术有限公司 | Broadband intelligent metamaterial large angle wave-transparent radome and antenna system thereof |
| CN106058457A (en) * | 2016-05-13 | 2016-10-26 | 武汉市迅捷时代信息技术有限公司 | Ultra-thin low-pass and frequency-selective metamaterial wave-transparent radome and antenna system thereof |
| 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 |
| CN111585034A (en) * | 2020-06-02 | 2020-08-25 | 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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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. |