CN109560390A - A kind of metallic resistance composite multi-layer multifrequency wideband wave absorbing material - Google Patents
A kind of metallic resistance composite multi-layer multifrequency wideband wave absorbing material Download PDFInfo
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- CN109560390A CN109560390A CN201710880370.2A CN201710880370A CN109560390A CN 109560390 A CN109560390 A CN 109560390A CN 201710880370 A CN201710880370 A CN 201710880370A CN 109560390 A CN109560390 A CN 109560390A
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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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- 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
- H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of metallic resistance composite multi-layer multifrequency wideband wave absorbing materials, using frequency-selective surfaces layer in conjunction with metal multi-resonant circular layer, frequency-selective surfaces layer, metal multi-resonant circular layer, metal base plate layer are laid with from top to bottom, are separated and are bonded together using the medium substrate of foam between any two.The metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the invention multilayered structure compound using metallic resistance, different structure metal and the impedance operator of resistance carbon-coating are different with resonance characteristic, surface actuator goes out the resonance current of different frequency range, there is good resonance response to the electromagnetic wave of different frequency ranges, have the function of that wideband, multifrequency inhale wave, and there is stronger wave-absorbing effect inhaling wave resonance peak；It is designed using MULTILAYER COMPOSITE, every layer of structure is very simple, production easy to process；Medium substrate layer uses foamed material, has ultralight weight, with the superperformance of ultra lightweighting in similar absorbing material.
Description
Technical field
The present invention relates to a kind of absorbing material, in particular to a kind of metallic resistance composite multi-layer multifrequency wideband wave absorbing material,
As electromagnetic wave shielding, belong to electromagnetic material field.
Background technique
Broad-band radar absorbers are a kind of novel and multifunctional composite materials, have it is with strong points, absorbing property is good, light weight,
Mechanical property meets the advantages that bearing requirements, in terms of having become the important development of contemporary stealth material.
Circuit analog absorbing material is a kind of mode of resonance broad-band radar absorbers being widely used, and has high temperature resistant, quality
Gently, wet-heat resisting, it is anticorrosive the features such as.This structure is made of frequency-selective surfaces (FSS), dielectric layer and metal base plate (PEC),
Wherein FSS is that chip unit periodic arrangement of various shapes forms, and incudes to incident electromagnetic wave and generates equivalent capacity, inductance and electricity
Resistance.By adjusting the geometry, size, sheet resistance etc. of FSS, equivalent capacity, inductance and the resistance of structural body can change, in turn
The resonance absorbing for adjusting structure entirety, effectively meets the absorbing property requirement of different application.
But there are the skills such as inhale wavestrip width, suction wave frequency section is single, relative thickness is thick in existing circuit analog absorbing material
Art problem.
Summary of the invention
In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a kind of metallic resistance composite multi-layer is more
It is single, opposite to solve suction wavestrip width, suction wave frequency section present in existing circuit analog absorbing material for frequency wideband wave absorbing material
The technical problems such as thickness thickness.
A kind of metallic resistance composite multi-layer multifrequency wideband wave absorbing material, including frequency-selective surfaces layer, medium substrate layer, gold
Belong to multi-resonant circular layer, metal base plate layer；
The frequency-selective surfaces layer, the metal multi-resonant circular layer, the metal base plate layer are laid with from top to bottom, two-by-two
Between be equipped with the medium substrate layer, and by resin solidification stickup.
Preferably, the frequency-selective surfaces layer includes the first rectangular resistive patch layer, first medium substrate layer, second party
Shape resistive patch layer；First rectangular resistive patch is formed by the upper surface that resin is periodically affixed on the first medium substrate layer
The first rectangular resistive patch layer, the second rectangular resistive patch are periodically affixed on the first medium substrate layer by resin
Lower surface forms the described second rectangular resistive patch layer.
Preferably, the resistance value of the described first rectangular resistive patch is 80 Ω, side length 14mm；The second rectangular resistance patch
The resistance value of piece is 40 Ω, side length 10mm.
Preferably, the medium substrate layer defined between the frequency-selective surfaces layer and the metal multi-resonant circular layer is
The medium substrate layer of second medium substrate layer, the metal multi-resonant circular layer and the metal base plate interlayer is third medium
Substrate layer, the first medium substrate layer, the second medium substrate layer, the third medium substrate layer thickness be respectively
1mm, 2mm, 1mm.
Preferably, the material of the medium substrate layer is foam, dielectric constant 1.2.
Preferably, the metal multi-resonant ring is periodically affixed on the medium substrate layer by resin and forms the metal
Multi-resonant circular layer, the metal multi-resonant ring include several square rings being arranged concentrically and 1 be set to inside the Fang Huan
Square piece.
Preferably, the metal multi-resonant ring includes 3 Fang Huan being arranged concentrically, 1 square piece；From outside inside, first
A length of 15mm outside Fang Huan, a length of 11mm outside inner edge a length of 13mm, second Fang Huan, outside inner edge a length of 9mm, third Fang Huan
Side length is 7mm, a length of 5mm of inner edge, and the side length of the square piece is 4mm.
Preferably, the metal base plate layer is copper foil, with a thickness of 15 μm.
Metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the invention, using frequency-selective surfaces layer and metal multi resonant
The circular layer that shakes combines, and frequency-selective surfaces layer, metal multi-resonant circular layer, metal base plate layer be laid with from top to bottom, between any two between adopt
It is separated and is bonded together with the medium substrate of foam.Metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the invention is adopted
With the compound multilayered structure of metallic resistance, different structure metal and the impedance operator of resistance carbon-coating are different with resonance characteristic, surface
The resonance current for motivating different frequency range has good resonance response to the electromagnetic wave of different frequency ranges, has wideband, multifrequency
The function of wave is inhaled, and there is stronger wave-absorbing effect inhaling wave resonance peak；It is designed using MULTILAYER COMPOSITE, every layer of structure is very simple
It is single, production easy to process；Medium substrate layer uses foamed material, has ultralight weight, has in similar absorbing material super
Light-weighted superperformance.
Detailed description of the invention
Fig. 1 is the metallic resistance composite multi-layer multifrequency wideband wave absorbing material structural schematic diagram of one embodiment of the invention.
Fig. 2 is the patch schematic diagram of the first square patch in a first rectangular resistive patch layer of embodiment.
Fig. 3 is the patch schematic diagram of the second square patch in a second rectangular resistive patch layer of embodiment.
Fig. 4 is the stickup schematic diagram of metal multi-resonant ring in an embodiment metal multi-resonant circular layer.
Fig. 5 is the reflection coefficient chart of the metallic resistance composite multi-layer multifrequency wideband wave absorbing material of an embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, but not to limit the present invention.
Metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the invention, including frequency-selective surfaces layer, metal multi resonant
Shake circular layer, metal base plate layer and several medium substrate layers.Frequency-selective surfaces layer, metal multi-resonant circular layer, metal base plate layer
It is laid with from top to bottom, is equipped with medium substrate layer between any two, and paste by resin solidification.
Resistance carbon-coating in traditional frequency-selective surfaces structural wave-absorbing material is designed in conjunction with metal multi-resonant ring, is led to
The multiple reflections and loss mechanisms for crossing resistance carbon-coating promote absorbing material and inhale wave efficiency, are realized and are inhaled by metal multi-resonant ring structure
The multifrequency point energy efficient resonant of wave material inhales wave.
The compound periodic structure of metallic resistance, no matter which type of polarization mode Ru She electromagnetic wave is presented, and inhales to entire
The effect of wave structure is all equivalent to application voltage drive, since the impedance operator and resonance of different structure metal and resistance carbon-coating are special
Property it is different, therefore can layer surface motivate the resonance current of different frequency range, when forming adaptive polarization condition, in loss Jie
Dispersion current can be generated in matter, the loss of electromagnetic energy is gradually decayed in absorbing material and generated to dispersion current.
Therefore, metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the invention can be such that the electromagnetic wave energy in outfield incudes
At dispersion current energy, and then the amount of allowing current to is converted into thermal energy to the lossy medium in absorbing material, increases the suction of absorbing material
Wave performance, to realize the composite absorption performance to different frequency range electromagnetic wave.
It referring to Fig.1, is the metallic resistance composite multi-layer multifrequency wideband wave absorbing material structural schematic diagram of one embodiment of the invention,
In the present embodiment, frequency-selective surfaces layer is also designed:
Frequency-selective surfaces layer includes the first rectangular resistive patch layer 1, first medium substrate layer 2, the second rectangular resistance patch
Lamella 3.First rectangular resistive patch forms described the by the upper surface that resin is periodically affixed on the first medium substrate layer
One rectangular resistance patch layer 1, the second rectangular resistive patch are periodically affixed on the following table of the first medium substrate layer by resin
Face forms the described second rectangular resistive patch layer 3.The resistance value of first rectangular resistive patch is 80 Ω, side length 14mm；Second party
The resistance value of shape resistive patch is 40 Ω, side length 10mm.
Referring to Fig. 2, Fig. 3, respectively the patch schematic diagram of first square patch of embodiment, the second square patch.At this
In embodiment, patch period of the first sheet resistance patch is 32mm, i.e., each first sheet resistance patch and its up and down between patch
Spacing is 32mm.The patch period of second sheet resistance patch is 16mm, i.e., each second sheet resistance patch and its up and down between patch
Spacing be 32mm.According to actual needs, the patch period of the first sheet resistance patch, the second sheet resistance patch can be designed.
In other examples, the size of resistive patch, resistance value can be carried out designing, resistive patch size increases
Ambassador's reflectivity peak position is mobile to low frequency, and bandwidth reduces；The increase of resistive patch sheet resistance makes emissivity peak position to high-frequency mobile, peak value
Increase, bandwidth increases.The change of resistive patch size and sheet resistance can all have an impact the absorbing property of material, can be according to reality
It needs to be designed it and reaches preferable absorbing property.In addition, the quantity of resistive patch layer can also be increased and be added deduct
It is few.
It is the stickup schematic diagram of metal multi-resonant ring in an embodiment metal multi-resonant circular layer referring to Fig. 4.In the present embodiment
In, metal multi-resonant ring is periodically affixed on medium substrate layer by resin and forms the metal multi-resonant circular layer 5.Metal multi resonant
Vibration is equipped with 3 Fang Huan, 1 square piece；From outside inside, a length of 15mm, a length of 13mm of inner edge, second side outside first Fang Huan
A length of 11mm, a length of 9mm of inner edge outside ring, a length of 7mm in the outside third Fang Huan, a length of 5mm of inner edge, the side length of internal square piece are
4mm.In the present embodiment, the patch period of metal multi-resonant ring be 16mm, i.e., each metal multi-resonant ring and its up and down
The spacing of metal multi-resonant interannular is 32mm.
In other examples, square number of rings amount, the size inside metal multi-resonant ring can be carried out designing, leads to
Overregulate the square number of rings amount of metal multi-resonant ring, size is may be implemented in turn to the strong regulatory function for inhaling wave frequency section.
Medium substrate layer between frequency-selective surfaces layer and metal multi-resonant circular layer 5 is second medium substrate layer 4, and metal is more
Medium substrate layer between resonance circular layer 5 and metal base plate layer 7 is third medium substrate layer 6, and first medium substrate layer 2, second is situated between
Matter substrate layer 4, third medium substrate layer 6 thickness be respectively 1mm, 2mm, 1mm.In the present embodiment, above-mentioned medium substrate layer
Material be foam, foam has ultralight weight, with the superperformance of ultra lightweighting, dielectric in similar absorbing material
Constant is 1.2 or so.In other embodiments, other materials can also be used and makees medium substrate.
In the present embodiment, metal base plate layer 7 is copper foil, with a thickness of 15 μm.In other embodiments, metal base plate layer
Other materials can be used, thickness can also design.
It is the reflection coefficient chart of the metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the present embodiment referring to Fig. 5.
The metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the present embodiment is made to the template of 200mm × 200mm outer dimension, is adopted
Its reflectivity is tested with vector network analyzer, incident electromagnetic wave impinges perpendicularly on template upper surface.By test result it is found that originally
The metallic resistance composite multi-layer multifrequency wideband wave absorbing material of embodiment have ultra-wide inhale wavestrip it is wide, 4.0GHz-18GHz range can
With the adjustable double frequency of realization -10dB reflection coefficient below or three frequency microwave absorbing properties；May be implemented near suction wave resonance peak-
The reflection coefficient of 20dB or so realizes stronger wave-absorbing effect.
Metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the invention, using frequency-selective surfaces layer and metal multi resonant
The circular layer that shakes combines, and frequency-selective surfaces layer, metal multi-resonant circular layer, metal base plate layer are laid with from top to bottom, use between any two
The medium substrate of foam is separated and is bonded together.Metallic resistance composite multi-layer multifrequency wideband wave absorbing material of the invention uses
The compound multilayered structure of metallic resistance, different structure metal and the impedance operator of resistance carbon-coating are different with resonance characteristic, and surface is swashed
The resonance current for encouraging out different frequency range has good resonance response to the electromagnetic wave of different frequency ranges, there is wideband, multifrequency to inhale
The function of wave, and there is stronger wave-absorbing effect inhaling wave resonance peak；It is designed using MULTILAYER COMPOSITE, every layer of structure is very simple
It is single, production easy to process；Medium substrate layer uses foamed material, has ultralight weight, has in similar absorbing material super
Light-weighted superperformance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (8)
1. a kind of metallic resistance composite multi-layer multifrequency wideband wave absorbing material, which is characterized in that including frequency-selective surfaces layer, medium
Substrate layer, metal multi-resonant circular layer, metal base plate layer；
The frequency-selective surfaces layer, the metal multi-resonant circular layer, the metal base plate layer are laid with from top to bottom, between any two
It is pasted equipped with the medium substrate layer, and by resin solidification.
2. metallic resistance composite multi-layer multifrequency wideband wave absorbing material according to claim 1, which is characterized in that the frequency
Selecting superficial layer includes the first rectangular resistive patch layer, first medium substrate layer, the second rectangular resistive patch layer；First square electric
Resistance patch forms the described first rectangular resistive patch layer by the upper surface that resin is periodically affixed on the first medium substrate layer,
Second rectangular resistive patch by resin is periodically affixed on the lower surface of the first medium substrate layer, and to form described second rectangular
Resistive patch layer.
3. metallic resistance composite multi-layer multifrequency wideband wave absorbing material according to claim 2, which is characterized in that described first
The resistance value of rectangular resistive patch is 80 Ω, side length 14mm；The resistance value of the second rectangular resistive patch is 40 Ω, and side length is
10mm。
4. metallic resistance composite multi-layer multifrequency wideband wave absorbing material according to claim 2, which is characterized in that described in definition
The medium substrate layer between frequency-selective surfaces layer and the metal multi-resonant circular layer is second medium substrate layer, the metal
The medium substrate layer of multi-resonant circular layer and the metal base plate interlayer is third medium substrate layer, the first medium substrate
Layer, the second medium substrate layer, the third medium substrate layer thickness be respectively 1mm, 2mm, 1mm.
5. according to claim 1 or metallic resistance composite multi-layer multifrequency wideband wave absorbing material described in 2, which is characterized in that institute
The material for giving an account of matter substrate layer is foam, dielectric constant 1.2.
6. metallic resistance composite multi-layer multifrequency wideband wave absorbing material according to claim 1, which is characterized in that the metal
Multi-resonant ring is periodically affixed on the medium substrate layer by resin and forms the metal multi-resonant circular layer, the metal multi resonant
Vibration ring includes several square rings being arranged concentrically and 1 square piece being set to inside the Fang Huan.
7. metallic resistance composite multi-layer multifrequency wideband wave absorbing material according to claim 6, which is characterized in that the metal
Multi-resonant ring includes 3 Fang Huan being arranged concentrically, 1 square piece；From outside inside, a length of 15mm, interior side length outside first Fang Huan
For 13mm, a length of 11mm, a length of 9mm of inner edge outside second Fang Huan, a length of 7mm in the outside third Fang Huan, a length of 5mm of inner edge,
The side length of the square piece is 4mm.
8. metallic resistance composite multi-layer multifrequency wideband wave absorbing material according to claim 1, which is characterized in that the metal
Backplane level is copper foil, with a thickness of 15 μm.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190407A (en) * | 2019-05-14 | 2019-08-30 | 南京航空航天大学 | A kind of broadband wave absorbing device and broadband wave absorbing device array based on resistive film |
| CN110380228A (en) * | 2019-07-23 | 2019-10-25 | 中国科学技术大学 | A kind of wave absorbing device part based on reflectionless filter principle |
| CN110736390A (en) * | 2019-10-25 | 2020-01-31 | 中国人民解放军国防科技大学 | Display unit module, system and multi-spectral-band compatible self-adaptive camouflage system |
| CN111883933A (en) * | 2020-07-02 | 2020-11-03 | 中国人民解放军火箭军工程大学 | Electric-regulation multi-band compatible intelligent camouflage structure |
| CN113394569A (en) * | 2021-06-30 | 2021-09-14 | 电子科技大学长三角研究院(湖州) | Low-profile dual-band wave-absorbing surface applied to vehicle-mounted radar test environment and manufacturing method thereof |
| CN113972478A (en) * | 2021-10-13 | 2022-01-25 | 山西大学 | Dual-band annular patch antenna with ultra wide band harmonic suppression |
| CN115954682A (en) * | 2023-02-28 | 2023-04-11 | 湖南博翔新材料有限公司 | Light wave-absorbing material and application thereof |
| CN118054222A (en) * | 2024-01-19 | 2024-05-17 | 中北大学 | Ultra-light wide-angle wave-absorbing metamaterial capable of being easily manufactured based on low-cost and easily-obtained carbon conductive film 2-18 GHz full-frequency absorption and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110190407A (en) * | 2019-05-14 | 2019-08-30 | 南京航空航天大学 | A kind of broadband wave absorbing device and broadband wave absorbing device array based on resistive film |
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| CN113394569A (en) * | 2021-06-30 | 2021-09-14 | 电子科技大学长三角研究院(湖州) | Low-profile dual-band wave-absorbing surface applied to vehicle-mounted radar test environment and manufacturing method thereof |
| CN113394569B (en) * | 2021-06-30 | 2022-10-18 | 电子科技大学长三角研究院(湖州) | Low-profile dual-band wave-absorbing surface applied to vehicle-mounted radar test environment and manufacturing method thereof |
| CN113972478A (en) * | 2021-10-13 | 2022-01-25 | 山西大学 | Dual-band annular patch antenna with ultra wide band harmonic suppression |
| CN113972478B (en) * | 2021-10-13 | 2023-12-26 | 山西大学 | Dual-band annular patch antenna with ultra-wideband harmonic suppression |
| CN115954682A (en) * | 2023-02-28 | 2023-04-11 | 湖南博翔新材料有限公司 | Light wave-absorbing material and application thereof |
| CN115954682B (en) * | 2023-02-28 | 2023-09-12 | 湖南博翔新材料有限公司 | Light wave-absorbing material and application thereof |
| CN118054222A (en) * | 2024-01-19 | 2024-05-17 | 中北大学 | Ultra-light wide-angle wave-absorbing metamaterial capable of being easily manufactured based on low-cost and easily-obtained carbon conductive film 2-18 GHz full-frequency absorption and manufacturing method thereof |
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Application publication date: 20190402 |