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CN104582458A - Wave absorbing metamaterial - Google Patents

Wave absorbing metamaterial Download PDF

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Publication number
CN104582458A
CN104582458A CN201310522845.2A CN201310522845A CN104582458A CN 104582458 A CN104582458 A CN 104582458A CN 201310522845 A CN201310522845 A CN 201310522845A CN 104582458 A CN104582458 A CN 104582458A
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CN
China
Prior art keywords
meta materials
suction ripple
ripple meta
base material
materials according
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CN201310522845.2A
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Chinese (zh)
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不公告发明人
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Kuang Chi Innovative Technology Ltd
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Kuang Chi Innovative Technology Ltd
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Priority to CN201310522845.2A priority Critical patent/CN104582458A/en
Publication of CN104582458A publication Critical patent/CN104582458A/en
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Abstract

The invention provides a wave absorbing metamaterial which comprises one or more layers of base material and one or more layers of resistor disc, wherein the resistor disc is arranged on the surface of one layer of base material or between two layers of base materials. The wave absorbing metamaterial provided by the invention has a wave absorbing metamaterial structure different from the prior art.

Description

Inhale ripple Meta Materials
Technical field
The present invention relates to Material Field, particularly, relate to a kind of suction ripple Meta Materials.
Background technology
Along with the development of modern science and technology, the harm of electromagenetic wave radiation to environment increases day by day.On airport, airplane flight is overdue because Electromagnetic Interference cannot be taken off; In hospital, mobile phone often can disturb the normal work of various electronic instrument for diagnosing and curing diseases device.Therefore, administer electromagnetic pollution, searching can be kept out and weaken the material of electromagenetic wave radiation---and inhale ripple Meta Materials, become a large problem of material science.
Inhale ripple Meta Materials to refer to and effectively can absorb incident electromagnetic wave and the class material making its scatter attenuation, incident electromagnetic wave to be changed into heat energy or other form of energy by the various different loss mechanism of material and reaches the object of inhaling ripple by it.Inhale ripple Meta Materials and have structural type and application type, the former is wedge shape, foam shape, plate shaped etc. mainly, and the latter is composited by absorbent and base material, and the ability of inhaling ripple is main relevant with absorbent kind.
The suction ripple Meta Materials of prior art mainly adopts epoxy resin or the silicon rubber composite material of single or multiple lift contain ferrite, and it has the features such as absorption frequency is high, absorptivity is high, matching thickness is thin.According to electromagnetic wave in media as well from the rule that low magnetic steering high magnetic conductance direction is propagated, utilize high magnetic conductivity ferrite guide electromagnetic waves, by resonance, the emittance of a large amount of electromagnetic wave absorption, then by coupling, electromagnetic energy conversion is become heat energy.
Fig. 1 is the schematic diagram of the absorbing property of the suction ripple Meta Materials that the ferrite of the different quality number of prior art and silicon rubber composite material are made, and the data in figure, each bar curve marked represent ferritic mass parts corresponding to the silicon rubber of every 100 mass parts of silicon rubber composite material.As can be seen from Figure 1, the absorbing property with the ferritic suction ripple Meta Materials of 450 parts is best, has the suction ripple being greater than 10dB in 9 ~ 18GHz frequency range.
Fig. 2 is the schematic diagram of the reflectance test of the Multilayer Microwave Absorption Materials be made up of high consumable material and plastic film of prior art, as can be seen from Figure 2, multilayer radar wave absorbing thin film can have at Ku wave band (i.e. 13 ~ 18GHz) the suction ripple being greater than 10dB, but need employing six floor height consumable material and five layers of plastic film, density is very large, and working band is not wide yet.
Therefore, suction ripple Meta Materials of the prior art can only absorb the electromagnetic wave of characteristic frequency or a bit of frequency band, is difficult to the different demands met in practical application.
Summary of the invention
The present invention aims to provide a kind of suction ripple Meta Materials, and this suction ripple Meta Materials has the suction ripple metamaterial structure being different from prior art.
To achieve these goals, the invention provides a kind of suction ripple Meta Materials, comprising: at least one deck base material, at least one deck resistor disc, resistor disc is arranged at one deck substrate surface or is arranged between two-layer base material.
Further, resistor disc comprises the sheet material that dielectric material is formed and the conductive structure being arranged on sheet surface.
Further, conductive structure is sheet monolithic conductive structure.
Further, conductive structure comprises and is arranged on a conduction geometry on sheet material or multiple spaced conduction geometry.
Further, conductive structure is made up of electrically conductive ink.
Further, the square resistance of resistor disc is more than or equal to 50 Ω/sq and is less than or equal to 5000 Ω/sq.
Further, conductive structure is attached to sheet surface by mode of printing or spraying method or plating mode.
Further, sheet material is resin sheet.
Further, inhale ripple Meta Materials and comprise two-layer above base material and two-layer above resistor disc, each layer base material and each layer resistor disc are arranged alternately.
Further, at least one deck resistor disc comprises sheet material and is arranged on the electrically conductive ink on the whole surface of sheet material.
Further, at least one deck resistor disc comprises sheet material and is arranged on a conduction geometry of sheet surface or multiple spaced conduction geometry.
Further, at least one deck resistor disc comprises sheet material and is arranged on the electrically conductive ink on the whole surface of this sheet material, and at least one deck resistor disc comprises sheet material and is arranged on a conduction geometry of this sheet surface or multiple spaced conduction geometry.
Further, absorbing material also comprises at least one deck light material.
Further, at least one deck base material is formed by one deck light material.
Further, at least one deck base material comprises multiple material layer, and in the plurality of material layer, at least one material layer is formed by light material.
Further, light material comprises cellular material and/or dielectric material.
Further, the dielectric constant of base material is more than or equal to 2 and is less than or equal to 5.
Further, base material is made up of modified high-molecular polymer or pottery.
Further, dielectric material is foam.
Further, foam is Polymethacrylimide.
Further, the material layer that light material is formed is arranged at the outside of all the other each material layers, or the material layer that light material is formed is arranged between the two layers of material in all the other each material layers.
Further, inhale ripple Meta Materials and also comprise reflector, reflector comprises reflecting surface, and the reflecting surface in reflector and the outer surface of outermost layer base material are oppositely arranged.
Apply technical scheme of the present invention, owing to having at least one deck base material and at least one deck resistor disc, resistor disc is arranged at one deck substrate surface or is arranged between two-layer base material, electromagnetic wave in one section of wider frequency range is not reflected as far as possible and enters suction ripple Meta Materials inside to greatest extent, and produce high loss by the resonance inhaling ripple Meta Materials, incident electromagnetic wave promptly decayed in a large number and is converted into heat energy or other energy, thus providing a kind of suction ripple metamaterial structure being different from prior art.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the absorbing property figure of the suction ripple Meta Materials that the ferrite of the different quality number of prior art and silicon rubber composite material are made;
Fig. 2 shows the schematic diagram of the reflectance test of the multilayer be made up of high consumable material and the plastic film suction ripple Meta Materials of prior art;
Fig. 3 is the sectional structure schematic diagram of the suction ripple Meta Materials according to the embodiment of the present invention one;
Fig. 4 is the schematic diagram that the dielectric constant of the internal layer base material of suction ripple Meta Materials according to the embodiment of the present invention one is 3.6, the dielectric constant of surface substrate carries out reflectance test when being 2.2;
Fig. 5 is the schematic diagram that the dielectric constant of the internal layer base material of suction ripple Meta Materials according to the embodiment of the present invention one is 2.6, the dielectric constant of surface substrate carries out reflectance test when being 2.2;
Fig. 6 is the schematic diagram that the dielectric constant of the internal layer base material of suction ripple Meta Materials according to the embodiment of the present invention one is 2.4, the dielectric constant of surface substrate carries out reflectance test when being 2.2;
Fig. 7 is the sectional structure schematic diagram with the suction ripple Meta Materials of multi-layered conductive structure according to the embodiment of the present invention two;
Fig. 8 is having in the suction ripple Meta Materials of multi-layered conductive structure with the schematic diagram of reflectivity during dielectric material making substrate according to the embodiment of the present invention two;
Fig. 9 is having in the suction ripple Meta Materials of multi-layered conductive structure with the schematic diagram of reflectivity during cellular material making substrate according to the embodiment of the present invention two;
Figure 10 is the sectional structure schematic diagram of the suction ripple Meta Materials be made up as base material of polymethacrylimide foam plate according to the embodiment of the present invention three;
Figure 11 is the schematic diagram of the reflectivity of the suction ripple Meta Materials be made up as base material of polymethacrylimide foam plate according to the embodiment of the present invention three.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
In the present invention and embodiments of the invention, inhale ripple Meta Materials and comprise at least one deck base material 1 and at least one deck resistor disc 2.Wherein, resistor disc 2 is arranged at one deck base material 1 surface or is arranged between two-layer base material 1.
By above-mentioned setting, electromagnetic wave in one section of wider frequency range is not reflected as far as possible and enters suction ripple Meta Materials inside to greatest extent, and produce high loss by the resonance inhaling ripple Meta Materials, incident electromagnetic wave promptly decayed in a large number and is converted into heat energy or other energy, thus providing a kind of suction ripple metamaterial structure being different from prior art.
Wherein, resistor disc 2 comprises the sheet material that dielectric material is formed and the conductive structure 20 being arranged on sheet surface.Preferably, conductive structure 20 is made up of electrically conductive ink.Preferably, conductive structure is attached to the sheet surface corresponding with it by mode of printing.Wherein, sheet material is preferably resin sheet.Resin material is beneficial to electrically conductive ink printing, and the effect of printing is better.
In addition, the square resistance of resistor disc is alternatively for being more than or equal to 50 Ω/sq and being less than or equal to 5000 Ω/sq.Preferably, the square resistance of resistor disc is more than or equal to 100 Ω/sq and is less than or equal to 1000 Ω/sq, such as, can be 500 Ω/sq.
Preferably, conductive structure 20 comprises and is arranged on a conduction geometry on sheet material or multiple spaced conduction geometry 201.Conduction geometry is the structure with plane geometric shape be made up of electric conducting material, and electric conducting material can be metal or alloy, also can be nonmetallic conductive material.
Wherein, conduction geometry made by preferred electrically conductive ink.Electrically conductive ink is arranged on the surface of sheet material by mode of printing.Certainly, the metals such as such as copper, silver, gold or copper alloy can also be adopted, or the nonmetallic materials such as such as indium tin oxide.In the embodiment do not provided, conductive structure can also be arranged on the surface of sheet material by the mode spraying or electroplate.
Wherein, conduction geometry 201 can adopt Computer Simulation to obtain, and the geometrical pattern of conduction geometry 201 can be box-shaped, snowflake shape, I-shaped, cross, circle hole shape or annular.
Preferably, suction ripple Meta Materials of the present invention also comprises reflector 3.Reflector 3 comprises reflecting surface, and the reflecting surface in reflector and the outer surface of outermost layer base material are oppositely arranged.The reflecting surface that electromagnetic wave is got on reflector 3 reflects later completely.Reflector can be the high-strength layer of the high connductivity such as metal level or carbon fiber layer, so not only can also increase the intensity of whole absorbing material by reflection electromagnetic wave.
Preferably, absorbing material of the present invention also comprises at least one deck light material.At least one deck base material 1 can flood be formed by light material.As every layer of light material all forms one deck base material.Base material 1 can also comprise multiple material layer, and wherein at least one layer of material is formed by light material, and such as, light material can be arranged at the outside of all the other each material layers, or light material is arranged between the two layers of material in all the other each material layers.
Light material comprises cellular material and/or dielectric material.Wherein, cellular material imitates natural hexagonal honeycomb and makes, and have good mechanical property, and density is low, can reach the requirement that light weight is high-strength.Dielectric material as light material can be foam.Preferably, foam is Polymethacrylimide (PMI).Polymethacrylimide foam material is a kind of crosslinked, even aperture distribution, isotropic 100% closed pore Rigid structural foams, has remarkable structural stability and high mechanical properties.Adopt above-mentioned light material as all or part of of the material of base material, the suction ripple Meta Materials made together with resistor disc, except meeting high strength and light-weighted demand, also has good absorbing property.
In addition, preferably, the dielectric constant of base material is more than or equal to 2 and is less than or equal to 5.The dielectric material that dielectric constant is in this scope is more conventional, can need to select concrete material, to obtain the wave-absorbing effect of needs according to design.
Such as base material 1 can be made up of modified high-molecular polymer or pottery.Pottery can comprise the mixture of aluminium oxide, silica, barium monoxide, iron oxide or above-mentioned material.Modified high-molecular polymer can comprise ABS resin, epoxy resin, PTFE etc.
Above embodiment should not form the restriction to the embodiment of the present invention, and such as, in the embodiment do not provided, light material can also be made up of cellular material and foam composition.
In various embodiments of the present invention, inhale ripple Meta Materials and comprise two-layer above base material 1 and two-layer above resistor disc 2.Each layer base material and each layer resistor disc are arranged alternately.In addition preferably, inhale ripple Meta Materials and also comprise binding material.Such as, each layer base material and each layer resistor disc are bonding by the glued membrane as binding material.Wherein, at least one deck resistor disc comprises sheet material and is arranged on the electrically conductive ink on the whole surface of sheet material.
In addition, at least one deck resistor disc comprises sheet material and is arranged on a conduction geometry of sheet surface or multiple spaced conduction geometry.
Below with reference to accompanying drawing, various embodiments of the present invention are described in detail respectively.
Embodiment one
Fig. 3 shows the concrete structure of the suction ripple Meta Materials of the embodiment of the present invention one.
The suction ripple Meta Materials of the embodiment of the present invention one comprises ground floor base material 11, second layer base material 12, third layer base material 13, ground floor resistor disc 21, second layer resistor disc 22 and reflector 3.
Wherein, ground floor base material 11 is covered in the surface in reflector 3; Second layer base material 12 is arranged at the side away from reflector 3 of ground floor base material 11, and ground floor resistor disc 21 is between ground floor base material 11 and second layer base material 12; Third layer base material 13 is arranged at the side away from reflector 3 of second layer base material 12, and second layer resistor disc 22 is arranged between second layer base material 12 and third layer base material 13.
In embodiment one, each layer resistor disc comprises the sheet material that dielectric material is formed and the conductive structure being arranged on sheet surface.Wherein, conductive structure is made up of electrically conductive ink.Conductive structure is attached to the sheet material all surfaces corresponding with it by mode of printing.Sheet material is resin sheet.
Preferably, the dielectric constant of ground floor base material 11 and second layer base material 12 is all more than or equal to 2 and is less than or equal to 5, and thickness is all more than or equal to 3mm and is less than or equal to 5mm.
In the present embodiment, the thickness of ground floor base material 11 and second layer base material 12 is 4 ± 0.3mm.The thickness of third layer base material 13 is 3.4 ± 0.2mm.The thickness difference of each layer base material can to reflectivity, and namely absorbing property produces corresponding impact.
The dielectric constant inhaling each layer base material of ripple Meta Materials can be identical, also can be different.Which floor base material selecting the dielectric constant of not adjacent with reflector 3 surface substrate to find with mating of resistor disc according to, the dielectric constant of not adjacent with reflector 3 surface substrate (corresponding to third layer base material in embodiment one) is optimum at about 2.2 wave-absorbing effects.
Being described below of the concrete making step of the suction ripple Meta Materials of above-described embodiment one:
1. get several pieces of 400 × 400mm 2the surface dielectric constant with Copper Foil be the dielectric-slab of 3.6, with corrosive liquid, the Copper Foil on the dielectric-slab surface as the second base material 12 is corroded completely, form if the first base material 11 is coordinated by multilayer acoustical panel, the Copper Foil on the dielectric-slab surface of the inside in the first base material 11 also needs to corrode completely, after etching, with stand-by after the corrosive liquid of washed with de-ionized water dielectric-slab remained on surface.And the Copper Foil on its surface is retained as the outermost layer dielectric-slab of the first base material 11.The Copper Foil on this outermost layer dielectric-slab surface is directly as reflector 3.
2. get several 400 × 400mm 2glued membrane is stand-by.
3. get one piece of 400 × 400mm 2the surface dielectric constant with Copper Foil be that the dielectric-slab of 2.2 is as third layer base material 13(and surface substrate), with corrosive liquid, the Copper Foil on dielectric-slab surface is corroded completely.After etching, stand-by with the corrosive liquid of washed with de-ionized water dielectric-slab remained on surface.
4. get two panels resistor disc as the first resistor disc 21 and the second resistor disc 22 stand-by.
5. more than ready material stack by the order of Fig. 3, wherein every layer of base material thickness can by different-thickness dielectric-slab coordinate form.
6. after press temperature is raised to 90 DEG C, the above-mentioned material stacked is put into press, keep pressure 1kgf/cm 2, be cooled to normal temperature after 11-20 minute and take out.
7. adopt free-space Method to carry out reflectance test to ready-made material, testing equipment is arc frame measuring system.
The schematic diagram of the reflectivity that the inner substrate that Fig. 4 to Fig. 6 shows the suction ripple Meta Materials of embodiment one adopts differing dielectric constant to obtain.The schematic diagram that the dielectric constant that Fig. 4 shows the internal layer base material of the suction ripple Meta Materials of embodiment one is 3.6, the dielectric constant of surface substrate carries out reflectance test when being 2.2; The schematic diagram that the dielectric constant that Fig. 5 shows the internal layer base material of the suction ripple Meta Materials of the present embodiment one is 2.6, the dielectric constant of surface substrate carries out reflectance test when being 2.2; The schematic diagram that the dielectric constant that Fig. 6 shows the internal layer base material of the present embodiment one is 2.4, the dielectric constant of surface substrate carries out reflectance test when being 2.2.
As can be seen from Fig. 4 to Fig. 6, when the incident angle of incident wave is identical, along with the reduction of the dielectric constant of internal layer base material, inhale the wide increase of wavestrip.When the absorbing material of the embodiment one shown in Fig. 4, Fig. 5 and Fig. 6 all has the suction ripple being greater than 10dB, corresponding Absorber Bandwidth is respectively 8 ~ 18GHz, 3.5 ~ 18GHz, 2.5 ~ 18GHz, and absorbing property is apparently higher than the wide 9 ~ 18GHz of suction wavestrip of the suction ripple Meta Materials be made up of ferrite and silicon rubber composite material of prior art.
Therefore, adopt the suction ripple Meta Materials with two-layer resistor disc and three layers of base material be made up of dielectric material of embodiment one, the electromagnetic function absorbing broad frequency band can be realized.
Embodiment two
Fig. 7 shows the sectional structure schematic diagram of the suction ripple Meta Materials of the embodiment of the present invention two.
The suction ripple Meta Materials of the present embodiment two comprises ground floor base material 11, second layer base material 12, third layer base material 13, ground floor resistor disc 21, second layer resistor disc 22 and reflector 3.
As shown in Figure 7, the suction ripple Meta Materials with multi-layered conductive structure 20 in embodiment two comprises three layers of resistor disc.Three layers of resistor disc are in particular the first resistor disc 21, second resistor disc 22 and the 3rd resistor disc 23.Wherein, ground floor resistor disc 21 comprises sheet material and is arranged on the electrically conductive ink on the whole surface of sheet material.Particularly, the conductive structure 20 of ground floor resistor disc 21 is sheet monolithic conductive structure.Two-layer resistor disc 2(i.e. the second resistor disc 22 and the 3rd resistor disc 23 in addition) include sheet material and the spaced multiple conduction geometries 201 being laid on sheet surface.Wherein, the conduction geometry be arranged on second layer resistor disc 22 can be identical with the geometrical pattern of the conduction geometry be arranged on third layer resistor disc 23, also can be different.Even if be arranged on conduction geometry mechanism on second layer resistor disc 22 identical with the conduction geometry be arranged on third layer resistor disc 23 time, the size of the conduction geometry on each layer resistor disc also can be different.
In the present embodiment two, ground floor resistor disc 21 is between ground floor base material 11 and second layer base material 12.Second layer resistor disc 22 and third layer resistor disc 23 are all arranged at the side away from reflector 3 of ground floor base material 11.Particularly, second layer resistor disc 22 is between second layer base material 12 and third layer base material 13.Third layer resistor disc 23 is arranged at the side away from reflector 3 of third layer base material 13.The conductive structure 20 of each layer resistor disc is all arranged at the side away from reflector 3 of sheet material.
In embodiment two, the material of each layer base material can be dielectric material.Also cellular material can be adopted to make base material.Cellular board is hollow, and dielectric constant is 1, close to the dielectric constant of air.
Other part do not described can the content of reference example one.
Fig. 8 is having in the suction ripple Meta Materials of multi-layered conductive structure with the schematic diagram of reflectivity during dielectric material making substrate according to the embodiment of the present invention two.In Fig. 8, A curve table is shown into the reflectivity of the suction ripple Meta Materials of ejected wave (normal incidence) when incidence angle is 0 °; B curve table is shown into ejected wave (namely TM ripple the direction of propagation does not have the electromagnetic wave of magnetic vector) when incidence angle is 45 °, inhales the reflectivity of ripple Meta Materials; C curve represents that incident wave (namely TE ripple the direction of propagation does not have the electromagnetic wave of electric vector) inhales the reflectivity of ripple Meta Materials when incidence angle is 45 °.As can be seen from Figure 8, incidence angle is the incident wave of 0 °, inhales ripple Meta Materials and has the suction ripple being greater than 10dB at bandwidth 5.8 ~ 18GHz, when the incidence angle of TM ripple is 45 °, inhales ripple Meta Materials and all has the suction ripple being greater than 10dB at bandwidth 6.2 ~ 18GHz; When the incidence angle of TE ripple is 45 °, inhales ripple Meta Materials and there is at bandwidth 7 ~ 18GHz the suction ripple being greater than 10dB.
Fig. 9 is having in the suction ripple Meta Materials of multi-layered conductive structure with the schematic diagram of reflectivity during cellular material making substrate according to the embodiment of the present invention two.As can be seen from Figure 9, when making substrate with cellular material, because the dielectric constant of cellular material is less than dielectric material, therefore, this suction ripple Meta Materials has the suction ripple being greater than 10dB in the scope that Absorber Bandwidth is 3.9 ~ 19GHz.
Therefore, adopt the suction ripple Meta Materials with conductive structure of the present embodiment two, the electromagnetic function absorbing broad frequency band can be realized.And when adopting cellular material to make the substrate inhaling ripple Meta Materials, making than adopting dielectric material the substrate inhaling ripple Meta Materials can have the suction ripple being greater than 10dB in wider frequency range.
Embodiment three
Figure 10 shows the sectional structure schematic diagram of the suction ripple Meta Materials be made up as base material of Polymethacrylimide (PMI) cystosepiment of the embodiment of the present invention three.
As shown in Figure 10, embodiment three is with the difference of embodiment one: the stacked system of dielectric-slab that the base material of the suction ripple Meta Materials of embodiment three is made up of Polymethacrylimide (PMI) cystosepiment or is made up of Polymethacrylimide (PMI) cystosepiment and conventional dielectric material forms.Here conventional dielectric material refers to the dielectric material beyond foam-expelling material and cellular material, as the macromolecule polymer material such as phenolic resins, epoxy resin or ceramic material etc.
The suction ripple Meta Materials of embodiment three comprises three layers of base material, three layers of resistor disc and reflector.Three layers of base material are specially common stacked ground floor base material 11, the second layer base material 12 formed by second layer PMI cystosepiment and the third layer base material 13 formed by third layer PMI cystosepiment formed of the dielectric-slab 11B be made up of ground floor PMI cystosepiment 11A and epoxy glass-fiber-fabric.Three layers of resistor disc are specially ground floor resistor disc 21, second layer resistor disc 22 and third layer resistor disc 23.Wherein, each layer resistor disc includes sheet material and is arranged on the sheet monolithic conductive structure of sheet surface.
In embodiment three, ground floor resistor disc 21 is between ground floor base material 11 and second layer base material 12.Second layer resistor disc 22 and third layer resistor disc 23 are all arranged at the side away from reflector 3 of ground floor base material 11.Particularly, second layer resistor disc 22 is between second layer base material 12 and third layer base material 13.Third layer resistor disc 23 is arranged at the side away from reflector 3 of third layer base material 13 and is covered in the surface of third layer base material 13.
Wherein, dielectric-slab 11B and reflector 3 can be made up of respectively the layers of copper on one piece of substrate and substrate covering copper pcb board.When making absorbing material, each layer PMI cystosepiment and each layer resistor disc be stacked and placed on by respective position the surface not covering copper of covering copper pcb board and adopt hot-setting adhesive mould to close.
Other part do not described can the content of reference example one and embodiment two.
Figure 11 shows the reflectivity of the embodiment of the present invention three at 1 ~ 19GHz.In Figure 11, D curve is the reflectivity adopting Computer Simulation to obtain as the suction ripple Meta Materials that base material is made by PMI cystosepiment of the present embodiment three; E curve be the present embodiment three by PMI cystosepiment as the suction ripple Meta Materials that base material is made adopt arc frame method suction ripple darkroom in carry out measuring the reflectivity obtained.As can be seen from Figure 11, this suction ripple Meta Materials has good absorbing property at 6 to 7GHz, is suitable for the demand that ripple inhaled by arrowband.
High strength and light-weighted demand is not only met by PMI cystosepiment as base material or as the suction ripple Meta Materials that the part of base material is made due to embodiment three, also in the bandwidth that some is narrower, there is good absorbing property, therefore can be applicable to some special occasions.And the dielectric-slab be made up of cystosepiment and conventional dielectric material forms base material jointly, then can regulate accordingly performance parameters such as the intensity of base material, dielectric constants.
Above embodiment should not be construed as limiting the invention, such as, when multi-layer substrate, the material of each layer base material can be the same or different, such as, when there being three layers of base material, each layer base material can respectively by ceramic material, foamed material and cellular material are made, again such as, when there being three layers of base material, wherein one deck or two-layer or whole base material can be made up of multilayer material layer, the layers of material layer of every layer of base material can be identical or different, the layers of material layer of every layer of base material comprises one or more layers light material, and light material can be arranged at other material layer outside or inside or and other material layer arrange etc. at interval successively.
As can be seen from above description, embodiments of the invention achieve following technique effect: owing to having at least one deck base material and at least one deck resistor disc, resistor disc is arranged at one deck substrate surface or is arranged between two-layer base material, electromagnetic wave in one section of wider frequency range is not reflected as far as possible and enters suction ripple Meta Materials inside to greatest extent, and produce high loss by the resonance inhaling ripple Meta Materials, incident electromagnetic wave promptly decayed in a large number and is converted into heat energy or other energy, thus providing a kind of suction ripple metamaterial structure being different from prior art.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (22)

1. inhale a ripple Meta Materials, it is characterized in that, described suction ripple Meta Materials comprises: at least one deck base material (1), at least one deck resistor disc (2), and described resistor disc is arranged at base material described in one deck (1) surface or is arranged between two-layer described base material (1).
2. suction ripple Meta Materials according to claim 1, is characterized in that, described resistor disc (2) comprises the sheet material that dielectric material is formed and the conductive structure being arranged on described sheet surface.
3. suction ripple Meta Materials according to claim 2, is characterized in that, described conductive structure is sheet monolithic conductive structure.
4. suction ripple Meta Materials according to claim 2, is characterized in that, described conductive structure comprises and is arranged on a conduction geometry on described sheet material or multiple spaced conduction geometry.
5. suction ripple Meta Materials according to claim 2, it is characterized in that, described conductive structure is made up of electrically conductive ink.
6. suction ripple Meta Materials according to claim 2, is characterized in that, the square resistance of described resistor disc is more than or equal to 50 Ω/sq and is less than or equal to 5000 Ω/sq.
7. suction ripple Meta Materials according to claim 2, is characterized in that, described conductive structure is attached to described sheet surface by mode of printing or spraying method or plating mode.
8. suction ripple Meta Materials according to claim 2, is characterized in that, described sheet material is resin sheet.
9. suction ripple Meta Materials according to claim 1, is characterized in that, described suction ripple Meta Materials comprises the above base material two-layer and the above resistor disc two-layer, and the described base material of each layer and the described resistor disc of each layer are arranged alternately.
10. suction ripple Meta Materials according to claim 9, is characterized in that, at least resistor disc described in one deck comprises sheet material and is arranged on the electrically conductive ink on the whole surface of described sheet material.
11. suction ripple Meta Materials according to claim 9, is characterized in that, at least resistor disc described in one deck comprises sheet material and is arranged on a conduction geometry of described sheet surface or multiple spaced conduction geometry.
12. suction ripple Meta Materials according to claim 9, it is characterized in that, at least resistor disc described in one deck comprises sheet material and is arranged on the electrically conductive ink on the whole surface of this sheet material, and at least resistor disc described in one deck comprises sheet material and is arranged on a conduction geometry of this sheet surface or multiple spaced conduction geometry.
13. suction ripple Meta Materials according to any one of claim 1 to 12, it is characterized in that, described suction ripple Meta Materials also comprises at least one deck light material.
14. suction ripple Meta Materials according to claim 13, it is characterized in that, at least base material described in one deck (1) is formed by light material described in one deck.
15. suction ripple Meta Materials according to claim 13, it is characterized in that, at least base material described in one deck (1) comprises multiple material layer, and in the plurality of material layer, at least one material layer is formed by described light material.
16. suction ripple Meta Materials according to claim 13, it is characterized in that, described light material comprises cellular material and/or dielectric material.
17. suction ripple Meta Materials according to any one of claim 1 to 12, it is characterized in that, the dielectric constant of described base material (1) is more than or equal to 2 and is less than or equal to 5.
18. suction ripple Meta Materials according to any one of claim 1 to 12, it is characterized in that, described base material (1) is made up of modified high-molecular polymer or pottery.
19. suction ripple Meta Materials according to claim 16, it is characterized in that, described dielectric material is foam.
20. suction ripple Meta Materials according to claim 19, it is characterized in that, described foam is Polymethacrylimide.
21. suction ripple Meta Materials according to claim 15, it is characterized in that, the material layer that described light material is formed is arranged at the outside of all the other each material layers, or the material layer that described light material is formed is arranged between the two layers of material in all the other each material layers.
22. suction ripple Meta Materials according to any one of claim 1 to 12, it is characterized in that, described suction ripple Meta Materials also comprises reflector (3), described reflector (3) comprises reflecting surface, and described in the described reflecting surface of described reflector (3) and outermost layer, the outer surface of base material (1) is oppositely arranged.
CN201310522845.2A 2013-10-29 2013-10-29 Wave absorbing metamaterial Pending CN104582458A (en)

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