CN106877005A - Ripple foam radar absorbing is inhaled in a kind of Meta Materials enhancing - Google Patents
Ripple foam radar absorbing is inhaled in a kind of Meta Materials enhancing Download PDFInfo
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- CN106877005A CN106877005A CN201710026088.8A CN201710026088A CN106877005A CN 106877005 A CN106877005 A CN 106877005A CN 201710026088 A CN201710026088 A CN 201710026088A CN 106877005 A CN106877005 A CN 106877005A
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- ripple
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
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Abstract
Ripple foam radar absorbing is inhaled the invention discloses a kind of enhancing of Meta Materials, the radar absorbing includes that ripple foaming structure and total reflection liner plate substrate are inhaled in Meta Materials enhancing；The Meta Materials enhancing suction ripple foaming structure is by least two-layer suction ripple froth bed and at least two-layer metamaterial layer is sequentially overlapped the planar layered structures for constituting in any order, the radar absorbing inhales ripple foam by Meta Materials are thin, light, strong, wide and incorporate conventional radar well the advantages of easy frequency modulation, improved with Meta Materials in more broadband and inhale ripple foaming properties, radar absorbing design is simple, workable, it is adaptable to the neighborhood such as radar-wave absorbing, electromagnetic shielding.
Description
Technical field
The present invention relates to radar absorbing, ripple foam radar absorbing is inhaled in more particularly to a kind of Meta Materials enhancing, is
Belong to functions of national defense Material Field.
Background technology
With developing rapidly for electromagnetic wave technology, status of the stealth technology in modern war is important all the more.Stealth technology
Whether flourishing direct relation army synthesis fight capability.Absorbing material is to realize stealthy equipment, shielding electromagnetic interference, hide investigation
Effective important means.The radar-wave absorbing foam of certain absorbent was filled in the last few years because of its lightweight, Vapor recovery unit, mechanical property
Can be good etc. can be widely studied application.
Meta Materials refer to the artificial material that a class has the ultra physical performance not available for natural medium.By engineer
Change key physical size and realize that specific effective electromagnetic parameter realizes that matching absorbs with special frequency channel.Meta Materials because its " it is thin,
Gently, wide, frequency band is easily adjusted " the advantages of attract numerous researchers.
The shortcomings of conventional radar absorbing material thickness is big, quality is big annoyings its actual application problem all the time.Especially
It is, in special frequency channel, to be difficult to meet actual demand when specific thicknesses limitation.By Meta Materials, " thin, light, wide, frequency band is easy
The conventional radar absorbing material that a little assigns of regulation " is one of effective ways of solution current problem.
The content of the invention
Have that thickness is big, quality big, special frequency channel can not realize good absorption for existing conventional radar absorbing material
The shortcomings of with it is not enough, it is an object of the invention to provide a kind of Meta Materials enhancing in more broadband with more preferable absorbing property
Inhale ripple foam radar absorbing；Meta Materials enhancing is inhaled ripple foam radar absorbing and designs simple, workable, is applicable
In neighborhoods such as radar-wave absorbing, electromagnetic shieldings.
In order to realize above-mentioned technical purpose, ripple foam radar absorbing is inhaled the invention provides a kind of enhancing of Meta Materials,
It includes that ripple foaming structure and total reflection liner plate substrate are inhaled in Meta Materials enhancing；It is by extremely that ripple foaming structure is inhaled in the Meta Materials enhancing
Few two-layer inhales ripple froth bed and at least two-layer metamaterial layer is sequentially overlapped composition in any order.
Preferred scheme, the Meta Materials enhancing inhales ripple foaming structure by least two-layer suction ripple froth bed and at least two-layer surpasses
Material layer is sequentially overlapped the planar layered structures of composition by alternating sequence.
More preferably scheme, the Meta Materials enhancing is inhaled ripple foaming structure and inhales ripple froth bed and two-layer metamaterial layer by two-layer
Composition is sequentially overlapped by alternating sequence；Or it is sequentially overlapped structure by alternating sequence by three layers of suction ripple froth bed and two-layer metamaterial layer
Into；Or be sequentially overlapped by alternating sequence and constituted by two-layer suction ripple froth bed and three layers of metamaterial layer.
Further preferred scheme, each layer inhales the suction ripple bubble in ripple froth bed in the Meta Materials enhancing suction ripple foaming structure
Foam material is identical or different；It is more preferably different.
Further preferred scheme, the Meta Materials phase in the Meta Materials enhancing suction ripple foaming structure in each layer metamaterial layer
It is same or different；It is more preferably different.
Preferred scheme, the Meta Materials are nanometer Meta Materials, photonic crystal, plasma Meta Materials, dielectric type surpass
Material or resistor-type Meta Materials.
In the suction ripple foamed material selection for inhaling ripple froth bed of the invention, suction ripple froth bed thickness and suction ripple foamed material
The selection of wave absorbing agent is unrestricted, can select the suction ripple foamed material of any existing report.For example：It is prepared by the research such as Liu Xiangxuan
Carbonyl iron inhale ripple foam, chopped carbon fiber polyurethane foam prepared by the research such as He Longhui etc., these are inhaled ripple foams and all adapt to
In technical scheme.
Metamaterial layer of the invention is the absorbing meta-material of the engineer of all existing reports.For example：Patent
The resistor-type Meta Materials and in recent years that Meta Materials frequency-selective surfaces that 103647152A is announced, patent 102811596A are announced
Launch the pure dielectric Meta Materials of research, these Meta Materials are all adapted to technical scheme.
Ripple foam radar absorbing is inhaled in Meta Materials enhancing of the invention, using along irradiation electromagnetism field direction as relative direction
With reference to the suction ripple froth bed and metamaterial layer that Meta Materials enhancing is inhaled in ripple foaming structure can take one with total reflection liner plate substrate
Determine arrangement mode.To describe in detail, with the Meta Materials of the above containing two-layer in Meta Materials enhancing suction ripple foaming structure, ripple more than two-layer is inhaled
It is specifically described as a example by foam：
Arrangement mode 1：Do not consider to be totally reflected liner plate substrate, along electromagnetic field direction of illumination, ripple foam knot is inhaled in Meta Materials enhancing
In structure, ground floor is metamaterial layer, and to inhale ripple froth bed, centre does not limit suction the ripple foam number of plies and metamaterial layer to last layer
Count, and the suction ripple alveolar layer and metamaterial layer of centre are arranged in any order, typical structure such as accompanying drawing 1；
Arrangement mode 2：Do not consider to be totally reflected liner plate substrate, along electromagnetic field direction of illumination, ripple foam knot is inhaled in Meta Materials enhancing
In structure, to inhale ripple froth bed, last layer is metamaterial layer to ground floor, and centre does not limit suction ripple alveolar layer number and metamaterial layer
Count, and the suction ripple alveolar layer and metamaterial layer of centre are arranged in any order, typical structure such as accompanying drawing 2.
Arrangement mode 3：Do not consider to be totally reflected liner plate substrate, along electromagnetic field direction of illumination, ripple foam knot is inhaled in Meta Materials enhancing
In structure, ground floor and last layer are suction ripple froth bed, and centre does not limit suction ripple alveolar layer number and the Meta Materials number of plies, and middle
Suction ripple alveolar layer and metamaterial layer arrange in any order, typical structure such as accompanying drawing 3.
Arrangement mode 4：Do not consider to be totally reflected liner plate substrate, along electromagnetic field direction of illumination, ripple foam knot is inhaled in Meta Materials enhancing
In structure, ground floor and last layer are metamaterial layer, and centre does not limit inhales ripple alveolar layer number and the Meta Materials number of plies, and centre
Inhale ripple alveolar layer and metamaterial layer is arranged in any order, typical structure such as accompanying drawing 4.
Total reflection liner plate substrate of the invention is the conventional total reflection liner plate of the art, its material type and is all-trans
Penetrate liner plate thickness unrestricted.Such as conventional copper coin of total reflection liner plate and industrial 1000 series of aluminium board.
Compared with the prior art, the Advantageous Effects that technical solution of the present invention is brought：
In the prior art, using polygon split resistor-type frequency-selective surfaces (FSS) and traditional electromagnetic wave absorbing material
(RAM) it is combined, three layers of wave-absorber is built so that the electromagnetic wave absorbing material RAM1 and RAM2 of different carbon fiber contents and bottom FSS is compound
Model resistor-type, FSS has more excellent absorbing property near 8.7GHz, while FSS is combined traditional magnetic inhales ripple material
Material RAM is generated and is opened up yupin effect, and full frequency band absorption is played in the range of 8~15GHz.
And Meta Materials enhancing of the invention is inhaled ripple foam radar absorbing and proposes a kind of brand-new Meta Materials and inhale ripple
Foam complex method, inhales ripple sponge layer and is constituted by any stacked system by least two-layer metamaterial layer and at least two-layer.Will
Multilayer is inhaled ripple foam and multi-layer metamaterial and is combined, metamaterial layer and absorbing material layer superimposion, can improve the office of wave-absorber
Portion's absorbent properties, and multilayer inhales ripple foam and multi-layer metamaterial superimposion, can effectively strengthen the whole absorption for inhaling ripple unit
Performance.And metamaterial layer is not limited to bottom (adjacent atr plate), and it is specific between being as required placed in foam
More than position, and Meta Materials setting two-layer, and different Meta Materials can be used so that the design of Meta Materials is not restricted to resonance
The traditional structure of unit+medium substrate+atr plate, is easy to various types of Meta Materials to come into operation (such as：Metal resonance list
Unit+medium substrate+metal resonant element Meta Materials, resonant element+medium substrate+resistance resonant element, or even with specific knot
The pure dielectric Meta Materials of structure), greatly increase the design flexibility of wave-absorber.And inhale ripple foam and set more than two-layer, and can be with
It is combined using identical or different suction ripple foamed material and Meta Materials, gradient absorbing material is advantageously formed, to strengthen absorption band
Width, and the increase of level promotes the electromagnetic wave of different length wavelength into wave-absorber and is depleted, and is particularly advantageous in low frequency and inhales ripple
The design of body material.In sum, ripple foamed material is inhaled in Meta Materials enhancing of the invention has broader effective absorption frequency model
Enclose, and with to having stronger absorption in the wide frequency ranges.
Brief description of the drawings
【Fig. 1】The structural representation of ripple foam radar absorbing is inhaled for Meta Materials enhancing prepared by embodiment 1；
【Fig. 2】The structural representation of ripple foam radar absorbing is inhaled for Meta Materials enhancing prepared by embodiment 2；
【Fig. 3】The structural representation of ripple foam radar absorbing is inhaled for Meta Materials enhancing prepared by embodiment 3；
【Fig. 4】The structural representation of ripple foam radar absorbing is inhaled for Meta Materials enhancing prepared by embodiment 4；
【Fig. 5】It is the reflectance curve with reference to example RAM1 with RAM2 composite wave-absorbing foams；
【Fig. 6】For the hole metamaterial structure schematic diagram that embodiment 1 is used；
【Fig. 7】The reflectance curve of ripple foam radar absorbing is inhaled for Meta Materials enhancing prepared by embodiment 1；
【Fig. 8】The reflectance curve of ripple foam radar absorbing is inhaled for Meta Materials enhancing prepared by embodiment 2；
【Fig. 9】For ripple foam radar absorbing reflectance curve is inhaled in Meta Materials enhancing prepared by embodiment 3；
【Figure 10】For ripple foam radar absorbing reflectance curve is inhaled in Meta Materials enhancing prepared by embodiment 4；
【Figure 11】It is the dielectric constant curve for inhaling ripple foam RAM1 used in embodiment 1~4；
【Figure 12】It is the permeability curcve for inhaling ripple foam RAM1 used in embodiment 1~4；
【Figure 13】It is the dielectric constant curve for inhaling ripple foam RAM2 used in embodiment 1~4；
【Figure 14】It is the permeability curcve for inhaling ripple foam RAM2 used in embodiment 1~4；
Wherein, 1 to inhale ripple froth bed RAM1, and 2 to inhale ripple froth bed RAM2, and 3 is metamaterial layer, and 4 is total reflection liner plate.
Specific embodiment
In order to more clearly represent the object, technical solutions and advantages of the present invention, the present invention is entered with reference to embodiment
Row is described in detail.
Be combined for laminate by the used hot pressing of the present invention.
The pre-pass transmission line theory of the present invention and equivalent circuit method assistant analysis and design.
The present invention is used：Arch method carries out reflectance test.
With reference to example：Hereinafter inhale ripple foams using two kinds of models and Meta Materials be compound, foam model be designated as respectively RAM1,
RAM2.Heretofore described each example inhales ripple foam and 5mmRAM2 foams using 5mmRAM1.Along electromagnetic field incident direction：
RAM1 is ground floor, and RAM2 is the second layer, and atr plate is third layer.Actual measurement absorptivity such as Fig. 5 of composite wave-absorbing foam：
Have in the range of 10.32-18GHz below -10dB and absorb, absorption maximum is -14.19dB.In this, as with reference to example.
Embodiment 1
The present embodiment is that multi-layer metamaterial is combined with multilayer suction ripple foam
Along electromagnetic field incident direction, ground floor is Meta Materials 1, and to inhale ripple foam RAM1, third layer is Meta Materials to the second layer
2, the 4th layer is suction ripple foam RAM2, and layer 5 is atr plate, structural representation such as Fig. 1.Wave-absorber is periodic structure unit,
One length of side of unit is 12mm.Meta Materials 1 are hole Meta Materials, and the length of side is 12mm, aperture 10mm, dielectric constant 4.3, loss
Angle tangent 0.025, thickness 1.6mm；Meta Materials 2 are unilateral cross hair design and medium substrate, cross line length 11.6mm, electrical conductivity
It is 5.8 × 10^7m/s, substrate dielectric constant is 4.3, loss angle tangent 0.025, thickness 0.8mm.Test result such as Fig. 7, as a result
Display：Wave-absorber has absorption, average absorption -17.93dB, at most strong absorption below -10dB in 5.68-18GHz frequency ranges
For -36dB absorbs by force.
Embodiment 2
The present embodiment is that multi-layer metamaterial is combined with multilayer suction ripple foam
Along electromagnetic field incident direction, to inhale ripple foam RAM1, the second layer is Meta Materials 1 to ground floor, and third layer is ripple foam
RAM2, the 4th layer is Meta Materials 2, and layer 5 is atr plate, structural representation such as Fig. 2.Wave-absorber is periodic structure unit, one
The length of side of individual unit is 12mm.Meta Materials 1 are unilateral cross hair design and medium substrate, cross line length 11.6mm, and electrical conductivity is
5.8 × 10^7m/s, substrate dielectric constant is 4.3, loss angle tangent 0.025, thickness 0.8mm；Meta Materials 2 are concentric both sides' ring
Resonance metal structure, electrical conductivity is 5.8 × 10^7m/s, and substrate dielectric constant is 4.3, loss angle tangent 0.025, thickness
0.8mm.Test result such as Fig. 8, as a result shows：Wave-absorber has absorption below -10dB in 5.8-18GHz frequency ranges, averagely
Absorption -15.8dB, is -23.2dB at absorption maximum.
Embodiment 3
The present embodiment is that multi-layer metamaterial is combined with multilayer suction ripple foam
Along electromagnetic field incident direction, to inhale ripple foam RAM1, the second layer is Meta Materials 1 to ground floor, and third layer is ripple foam
RAM1, the 4th layer is Meta Materials 2, and to inhale ripple foam RAM2, layer 6 is atr plate, structural representation such as Fig. 3 to layer 5.Inhale
Ripple body is periodic structure unit, and a length of side for unit is 12mm.Meta Materials 1 are one side side's ring structure and medium substrate, Fang Huan
Length of side 10mm, electrical conductivity is 5.8 × 10^7m/s, and substrate dielectric constant is 4.3, loss angle tangent 0.025, thickness 0.8mm；It is super
Material 2 is unilateral cross hairs resonance metal structure, and electrical conductivity is 5.8 × 10^7m/s, and substrate dielectric constant is 4.3, and loss angle is just
Cut 0.025, thickness 0.8mm.Test result such as Fig. 9, as a result shows：Wave-absorber has -10dB in 4.36-18GHz frequency ranges
Hereinafter absorb, average absorption -15.89dB.
Embodiment 4
The present embodiment is that multi-layer metamaterial is combined with multilayer suction ripple foam
Along electromagnetic field incident direction, ground floor is Meta Materials 1, and to inhale ripple foam RAM1, third layer is Meta Materials to the second layer
2, the 4th layer is suction ripple foam RAM2, and layer 5 is Meta Materials 3, and layer 6 is atr plate, structural representation such as Fig. 4.Inhale ripple
Body is periodic structure unit, and a length of side for unit is 12mm.Meta Materials 1 are hole Meta Materials, and dielectric constant 4.3 is lost just
0.025, thickness 1.6mm, length of side 12mm, aperture 10mm are cut to, shaping is once carved according to CAD diagram shape with digital-controlled carving machine.It is super
Material 2 is unilateral cross hairs metal structure and medium substrate, and line length 11.6mm, electrical conductivity is 5.8 × 10^7m/s, substrate dielectric
Constant is 4.3, loss angle tangent 0.025, thickness 0.8mm；Meta Materials 3 are concentric both sides' ring resonance metal structure, and electrical conductivity is
5.8 × 10^7m/s, substrate dielectric constant is 4.3, loss angle tangent 0.025, thickness 0.8mm.Test result such as Figure 10, as a result
Display：Wave-absorber has absorption below -10dB in 5.68-18GHz frequency ranges, and average absorption -18.4dB reaches at absorption maximum
To -35.3dB.
Above embodiment is only as analysis example.The present invention is not only restricted in implementation example.
Claims (6)
1. ripple foam radar absorbing is inhaled in Meta Materials enhancing, it is characterised in that：
Ripple foaming structure and total reflection liner plate substrate are inhaled including Meta Materials enhancing；
It is to inhale ripple froth bed and at least two-layer metamaterial layer by any by least two-layer that ripple foaming structure is inhaled in the Meta Materials enhancing
Order is sequentially overlapped the planar layered structures of composition.
2. ripple foam radar absorbing is inhaled in Meta Materials enhancing according to claim 1, it is characterised in that：The Meta Materials
Enhancing suction ripple foaming structure is sequentially overlapped by alternating sequence by least two-layer suction ripple froth bed and at least two-layer metamaterial layer and constituted.
3. ripple foam radar absorbing is inhaled in Meta Materials enhancing according to claim 2, it is characterised in that：The Meta Materials
Enhancing is inhaled ripple foaming structure and is sequentially overlapped by alternating sequence and is constituted by two-layer suction ripple froth bed and two-layer metamaterial layer；Or by three
Layer inhales ripple froth bed and two-layer metamaterial layer is sequentially overlapped composition by alternating sequence；Or it is super by two-layer suction ripple froth bed and three layers
Material layer is sequentially overlapped composition by alternating sequence.
4. ripple foam radar absorbing is inhaled in the Meta Materials enhancing according to any one of claims 1 to 3, it is characterised in that：
The suction ripple foamed material that each layer is inhaled in ripple froth bed in the Meta Materials enhancing suction ripple foaming structure is identical or different.
5. ripple foam radar absorbing is inhaled in the Meta Materials enhancing according to any one of claims 1 to 3, it is characterised in that：
Meta Materials in the Meta Materials enhancing suction ripple foaming structure in each layer metamaterial layer are identical or different.
6. ripple foam radar absorbing is inhaled in Meta Materials enhancing according to claim 5, it is characterised in that：The Meta Materials
It is nanometer Meta Materials, photonic crystal, plasma Meta Materials, dielectric type Meta Materials or resistor-type Meta Materials.
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| CN201710026088.8A CN106877005A (en) | 2017-01-13 | 2017-01-13 | Ripple foam radar absorbing is inhaled in a kind of Meta Materials enhancing |
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| CN201710026088.8A CN106877005A (en) | 2017-01-13 | 2017-01-13 | Ripple foam radar absorbing is inhaled in a kind of Meta Materials enhancing |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134213A (en) * | 2017-12-22 | 2018-06-08 | 航天科工武汉磁电有限责任公司 | Wide-band composite wave-absorbing device and its application |
| CN108539424A (en) * | 2018-05-29 | 2018-09-14 | 中国舰船研究设计中心 | Dual band frequencies select composite material sandwich structure and its manufacturing method |
| CN110048238A (en) * | 2019-05-08 | 2019-07-23 | 南京邮电大学 | A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials |
| CN110289499A (en) * | 2019-02-15 | 2019-09-27 | 南京邮电大学 | A kind of unidirectional absorption wave absorbing device based on multilayer solid state plasma structure |
| CN111516340A (en) * | 2020-07-03 | 2020-08-11 | 宁波曙翔新材料股份有限公司 | Invisible and anti-damage shielding material and preparation method thereof |
| CN111769367A (en) * | 2020-07-14 | 2020-10-13 | 合肥工业大学 | Metamaterial wave absorber and communication equipment |
| CN112346163A (en) * | 2020-10-20 | 2021-02-09 | 中国人民解放军国防科技大学 | Plasma and photonic crystal composite stealth structure |
| CN112436286A (en) * | 2020-11-12 | 2021-03-02 | 军事科学院系统工程研究院军需工程技术研究所 | Frequency band adjustable flexible multilayer wave-absorbing material and preparation method thereof |
| CN113506993A (en) * | 2021-06-18 | 2021-10-15 | 电子科技大学 | Medium type periodic structure with high frequency and low frequency |
| CN115077302A (en) * | 2022-08-18 | 2022-09-20 | 合肥中隐新材料有限公司 | Radar stealth external member based on metamaterial |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134213A (en) * | 2017-12-22 | 2018-06-08 | 航天科工武汉磁电有限责任公司 | Wide-band composite wave-absorbing device and its application |
| CN108539424A (en) * | 2018-05-29 | 2018-09-14 | 中国舰船研究设计中心 | Dual band frequencies select composite material sandwich structure and its manufacturing method |
| CN110289499B (en) * | 2019-02-15 | 2021-03-30 | 南京邮电大学 | One-way absorption wave absorber based on multilayer solid-state plasma structure |
| CN110289499A (en) * | 2019-02-15 | 2019-09-27 | 南京邮电大学 | A kind of unidirectional absorption wave absorbing device based on multilayer solid state plasma structure |
| CN110048238A (en) * | 2019-05-08 | 2019-07-23 | 南京邮电大学 | A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials |
| CN111516340A (en) * | 2020-07-03 | 2020-08-11 | 宁波曙翔新材料股份有限公司 | Invisible and anti-damage shielding material and preparation method thereof |
| CN111769367B (en) * | 2020-07-14 | 2021-07-23 | 合肥工业大学 | Metamaterial wave absorber and communication equipment |
| CN111769367A (en) * | 2020-07-14 | 2020-10-13 | 合肥工业大学 | Metamaterial wave absorber and communication equipment |
| CN112346163A (en) * | 2020-10-20 | 2021-02-09 | 中国人民解放军国防科技大学 | Plasma and photonic crystal composite stealth structure |
| CN112436286A (en) * | 2020-11-12 | 2021-03-02 | 军事科学院系统工程研究院军需工程技术研究所 | Frequency band adjustable flexible multilayer wave-absorbing material and preparation method thereof |
| CN113506993A (en) * | 2021-06-18 | 2021-10-15 | 电子科技大学 | Medium type periodic structure with high frequency and low frequency |
| CN113506993B (en) * | 2021-06-18 | 2022-05-03 | 电子科技大学 | Medium type periodic structure with high frequency and low frequency |
| CN115077302A (en) * | 2022-08-18 | 2022-09-20 | 合肥中隐新材料有限公司 | Radar stealth external member based on metamaterial |
| CN115077302B (en) * | 2022-08-18 | 2022-11-04 | 合肥中隐新材料有限公司 | Radar stealth external member based on metamaterial |
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Application publication date: 20170620 |