CN103296478A - Novel air impedance matching material based on artificial metal microstructure unit and radome - Google Patents
Novel air impedance matching material based on artificial metal microstructure unit and radome Download PDFInfo
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- CN103296478A CN103296478A CN2012100510876A CN201210051087A CN103296478A CN 103296478 A CN103296478 A CN 103296478A CN 2012100510876 A CN2012100510876 A CN 2012100510876A CN 201210051087 A CN201210051087 A CN 201210051087A CN 103296478 A CN103296478 A CN 103296478A
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Abstract
The invention relates to a novel air impedance matching material based on an artificial metal microstructure unit and a radome. The air impedance matching material comprises at least one material piece layer, each material piece layer comprises a substrate and an artificial metal microstructure arranged on the substrate, each substrate is virtually divided into multiple substrate units arranged in an array mode, two opposite surfaces of each substrate unit are respectively adhered to a first artificial metal microstructure and a second artificial metal microstructure, each first artificial metal microstructure is shaped like a strip, each second artificial metal microstructure comprises a connecting arm, two ends of each connecting arm extends to two sides of the connecting arm to form extending arms, and the free end of at least one extending arm extends to the other extending arm to form a bent arm. The novel air impedance matching material is good in impedance matching effect, small in reflection coefficient, small in overall thickness, simple in structure and easy to manufacture.
Description
Technical field
The present invention relates to a kind of material and radome, more particularly, relate to a kind of novel air impedance matching material and radome based on artificial microstructure unit.
Background technology
If electromagnetic wave through the material of different impedances, can reflect at the interface place in transmission course, in order to reduce electromagnetic reflection, reduce energy loss, in electromagnetic transmission, need to consider impedance matching.
Super material is a kind of novel artificial synthetic material, comprise the artificial micro-structural with certain pattern form and the accompanying substrate of artificial micro-structural that are constituted by metal wire, a plurality of artificial micro-structurals array arrangement on substrate, substrate is played a supporting role to artificial micro-structural, can be the different material of any and artificial micro-structural.The stack meeting of these two kinds of materials produces an effective dielectric constant and magnetic permeability in the space, these two physical parameters are corresponding respectively electric field response and the magnetic responsiveness of material monolithic.
Super material is determined by artificial features of microstructures the feature of electromagnetic response, and the electromagnetic response of artificial micro-structural depends on topological characteristic and the super material cell size of its metal wire to a great extent.Super material cell size depends on the electromagnetic wave that artificial micro-structural need respond, the size of common artificial micro-structural is less than 1/10th of the electromagnetic wavelength of required response, otherwise can not be regarded as in the space continuously by being arranged in of forming of artificial micro-structural in the space.Because the existence of metal micro structure, super material presents special response characteristic to electric field and magnetic field; Simultaneously, to different concrete structure and the shapes of metal micro structure design, can change the response characteristic of whole super material.
Radome is to exempt to be influenced by the adverse circumstances for the protection of the cover internal antenna, yet it has also influenced radiation characteristic and the circuit characteristic of antenna simultaneously.Especially the surface is in the impedance matching of the impedance of radome and air, and owing to impedance does not match, thereby the reflection of electromagnetic wave coefficient is big when air borne is to the radome for electromagnetic wave in the prior art.
Summary of the invention
The technical problem to be solved in the present invention is: at electromagnetic wave in the prior art by air borne during to adjacent media since impedance do not match and the defective of reflection of electromagnetic wave and energy loss can occur, a kind of novel air impedance matching material based on artificial microstructure unit is provided, and its impedance matching is effective, reflection coefficient is little, general thickness is thin, simple in structure and be easy to make.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of novel air impedance matching material based on artificial microstructure unit, this material comprises at least one sheet of material, each sheet of material comprises a substrate and is arranged on artificial metal's micro-structural on the described substrate, described substrate is divided into the base board unit of a plurality of array arrangements virtually, relative two surfaces of each base board unit are attached with first an artificial metal micro structure and second artificial metal's micro-structural respectively, the described first artificial metal micro structure is bar shaped, described second artificial metal's micro-structural comprises a linking arm, the two ends of described linking arm have all extended to form adjutage to the both sides of this linking arm, and the free end of described at least one adjutage has extended to form bent over arms to another adjutage direction.
Further, the angle that forms of described adjutage and the bent over arms that links to each other with this adjutage at 45 degree between 135 degree.
Further, described adjutage is 90 degree with the angle that the bent over arms that links to each other with this adjutage forms.
Further, the free end of described two adjutages has all extended to form bent over arms in opposite directions, is formed with opening between two bent over arms of described linking arm the same side.
Further, described linking arm and described adjutage form I-shaped structure.
Further, described substrate is for making by ceramic material, polytetrafluoroethylmaterial material, ferroelectric material, ferrite material, ferromagnetic material or for the FR-4 epoxy glass fiber.
Further, described artificial metal's micro-structural is made by copper cash or silver-colored line.
The invention also discloses a kind of radome, the preparation material of described radome comprises at least one sheet of material, each sheet of material comprises a substrate and is arranged on artificial metal's micro-structural on the described substrate, described substrate is divided into the base board unit of a plurality of array arrangements virtually, relative two surfaces of each base board unit are attached with first an artificial metal micro structure and second artificial metal's micro-structural respectively, the described first artificial metal micro structure is bar shaped, described second artificial metal's micro-structural comprises a linking arm, the two ends of described linking arm have all extended to form adjutage to the both sides of this linking arm, and the free end of described at least one adjutage has extended to form bent over arms to another adjutage direction.
Further, described adjutage is 90 degree with the angle that the bent over arms that links to each other with this adjutage forms.
Further, the free end of described two adjutages has all extended to form bent over arms in opposite directions, is formed with opening between two bent over arms of described linking arm the same side.
Implement the present invention and have following beneficial effect: by regulating shape, the size of metal micro structure, change relative dielectric constant and the magnetic permeability of material, thereby change the impedance of material, realize the impedance matching with air, to reduce the reflection to incident electromagnetic wave to greatest extent, its impedance matching is effective, reflection coefficient is little, general thickness is thin, simple in structure and be easy to make.
Description of drawings
Fig. 1 is the structural representation of the base board unit of a kind of embodiment of novel air impedance matching material of the present invention;
The structural representation of second artificial metal's micro-structural in Fig. 2 embodiment of the invention;
Fig. 3 and Fig. 4 are respectively the CST analogous diagram of embodiment of the invention impedance and impedance matching effect.
Embodiment
See also Fig. 1 and Fig. 2, the invention provides a kind of novel air impedance matching material based on artificial microstructure unit, this material comprises a plurality of sheet of material, each sheet of material comprises a substrate and is arranged on artificial metal's micro-structural on the described substrate that described substrate is made by ceramic material, polytetrafluoroethylmaterial material, ferroelectric material, ferrite material, ferromagnetic material or FR-4 epoxy glass fiber.In the present embodiment, described substrate is made by the FR-4 epoxy glass fiber, and it has low price, good adhesion, and agent of low hygroscopicity, good insulating, flame resistance is good, good stability, advantages such as good electric property.
Described substrate is divided into the base board unit of a plurality of array arrangements virtually, and relative two surfaces of each base board unit 1 are attached with first an artificial metal micro structure 2 and second artificial metal's micro-structural 3 respectively, and the described first artificial metal micro structure 2 is bar shaped.Described second artificial metal's micro-structural 3 comprises a linking arm 31, the bearing of trend of described linking arm 31 is identical with the bearing of trend of the described first artificial metal micro structure 2, the two ends of described linking arm 31 have all extended to form adjutage 32 to the both sides of this linking arm 31, the angle that forms between described linking arm 31 and the described adjutage 32 is spent less than 180 greater than zero degree, in the present embodiment, the angle that forms between described linking arm 31 and the described adjutage 32 is 90 degree, and described linking arm 31 forms I-shaped structure with described adjutage 32.
The free end of described at least one adjutage 32 has extended to form bent over arms 33 to another adjutage 32 directions, and the angle that described adjutage 32 and the bent over arms 33 that links to each other with this adjutage 32 form is between 45 degree are spent to 135.In the present embodiment, the free end of described two adjutages 32 has all extended to form bent over arms 33 in opposite directions, is formed with opening 34 between two bent over arms 33 of described linking arm 31 the same sides, namely is not in contact with one another between described two bent over arms 33 that link to each other; Described adjutage 32 is 90 degree with the angle that the bent over arms 33 that links to each other with this adjutage 32 forms, thereby described two adjacent bent over arms 33 are on the same straight line.Described artificial metal's micro-structural can be made by copper cash or silver-colored line, and in the present embodiment, it is made by silver-colored line.Sheet of material thickness of the present invention is extremely thin, has only about 0.4mm, and is simple in structure, is easy to make very economical practicality.Fill the material that can connect the two by assembling or between per two block of material lamellas between described a plurality of sheet of material, it is bonding with existing two sheet of material after curing, thereby makes a plurality of sheet of material constitute an integral body.
When the novel air impedance matching material based on artificial microstructure unit of the present invention is applied on the radome, the analogous diagram of its electromagnetic wave by described novel air impedance matching material based on artificial metal's microstructure unit as shown in Figures 3 and 4, simulation result shows: near frequency 14GHz, impedance of the present invention is near 1, and the bandwidth of impedance between 1 ± 10% (0.9～1.0) reaches 1GHz.S11 reaches-27dB near the 14GHz, and can reach 7.2GHz in the-following bandwidth of 6dB, therefore can realize impedance matching with air at wide frequency range.What the present invention adopted is frequency-selective surfaces (FSS) structure, therefore can adjust the relevant work frequency according to actual conditions, and practicality is wider.For example, when needs when other frequency ranges and air mate, size that can be by changing material cell or make the metal micro structure size and realize is moved after the size decreases coupling frequency range, size becomes the reach of big coupling frequency range.
In sum, the present invention is by regulating shape, the size of metal micro structure, change relative dielectric constant and the magnetic permeability of material, thereby change the impedance of material, realize the impedance matching with air, to reduce the reflection to incident electromagnetic wave to greatest extent, so reduced the reflection when incident electromagnetic wave enters this material by air, namely reduced the return loss of incident electromagnetic wave.Its impedance matching is effective, reflection coefficient is little, general thickness is thin, simple in structure and be easy to make.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of distortion, these all belong within the protection of the present invention.
Claims (10)
1. novel air impedance matching material based on artificial microstructure unit, it is characterized in that, this material comprises at least one sheet of material, each sheet of material comprises a substrate and is arranged on artificial metal's micro-structural on the described substrate, described substrate is divided into the base board unit of a plurality of array arrangements virtually, relative two surfaces of each base board unit are attached with first an artificial metal micro structure and second artificial metal's micro-structural respectively, the described first artificial metal micro structure is bar shaped, described second artificial metal's micro-structural comprises a linking arm, the two ends of described linking arm have all extended to form adjutage to the both sides of this linking arm, and the free end of described at least one adjutage has extended to form bent over arms to another adjutage direction.
2. the novel air impedance matching material based on artificial microstructure unit according to claim 1 is characterized in that, the angle that described adjutage and the bent over arms that links to each other with this adjutage form is between 45 degree are spent to 135.
3. the novel air impedance matching material based on artificial microstructure unit according to claim 1 and 2 is characterized in that, described adjutage is 90 degree with the angle that the bent over arms that links to each other with this adjutage forms.
4. the novel air impedance matching material based on artificial microstructure unit according to claim 1 and 2, it is characterized in that, the free end of described two adjutages has all extended to form bent over arms in opposite directions, is formed with opening between two bent over arms of described linking arm the same side.
5. the novel air impedance matching material based on artificial microstructure unit according to claim 1 and 2 is characterized in that, described linking arm and described adjutage form I-shaped structure.
6. the novel air impedance matching material based on artificial microstructure unit according to claim 1 and 2, it is characterized in that described substrate is for to be made by ceramic material, polytetrafluoroethylmaterial material, ferroelectric material, ferrite material, ferromagnetic material or FR-4 epoxy glass fiber.
7. the novel air impedance matching material based on artificial microstructure unit according to claim 1 and 2 is characterized in that described artificial metal's micro-structural is made by copper cash or silver-colored line.
8. radome, it is characterized in that, the preparation material of described radome comprises at least one sheet of material, each sheet of material comprises a substrate and is arranged on artificial metal's micro-structural on the described substrate, described substrate is divided into the base board unit of a plurality of array arrangements virtually, relative two surfaces of each base board unit are attached with first an artificial metal micro structure and second artificial metal's micro-structural respectively, the described first artificial metal micro structure is bar shaped, described second artificial metal's micro-structural comprises a linking arm, the two ends of described linking arm have all extended to form adjutage to the both sides of this linking arm, and the free end of described at least one adjutage has extended to form bent over arms to another adjutage direction.
9. radome according to claim 8 is characterized in that, described adjutage is 90 degree with the angle that the bent over arms that links to each other with this adjutage forms.
10. radome according to claim 9 is characterized in that, the free end of described two adjutages has all extended to form bent over arms in opposite directions, is formed with opening between two bent over arms of described linking arm the same side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100510876A CN103296478A (en) | 2012-02-29 | 2012-02-29 | Novel air impedance matching material based on artificial metal microstructure unit and radome |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638351A (en) * | 2013-11-13 | 2015-05-20 | 深圳光启创新技术有限公司 | Antenna baffle board and high-gain antenna |
| CN106441062A (en) * | 2016-10-19 | 2017-02-22 | 武汉市工程科学技术研究院 | Linear displacement sensor based on dual-layer electromagnetic metamaterial |
| CN107293850A (en) * | 2016-03-31 | 2017-10-24 | 深圳光启高等理工研究院 | Metamaterial flat and preparation method thereof and metamaterial flat antenna |
| CN113437526A (en) * | 2021-06-19 | 2021-09-24 | 西北工业大学 | Graphene/metal composite super-surface-based dual-band electromagnetic wave transmission modulation method and device |
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| CN101389998A (en) * | 2004-07-23 | 2009-03-18 | 加利福尼亚大学董事会 | Metamaterials |
| US20100314040A1 (en) * | 2009-06-10 | 2010-12-16 | Toyota Motor Engineering & Manufacturing North America, Inc. | Fabrication of metamaterials |
| CN202180883U (en) * | 2011-08-19 | 2012-04-04 | 肖一九 | Self-propelled four-wheeled box wagon |
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| CN101389998A (en) * | 2004-07-23 | 2009-03-18 | 加利福尼亚大学董事会 | Metamaterials |
| US20100314040A1 (en) * | 2009-06-10 | 2010-12-16 | Toyota Motor Engineering & Manufacturing North America, Inc. | Fabrication of metamaterials |
| CN202180883U (en) * | 2011-08-19 | 2012-04-04 | 肖一九 | Self-propelled four-wheeled box wagon |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638351A (en) * | 2013-11-13 | 2015-05-20 | 深圳光启创新技术有限公司 | Antenna baffle board and high-gain antenna |
| CN104638351B (en) * | 2013-11-13 | 2018-09-28 | 深圳光启创新技术有限公司 | Antenna-reflected plate and high-gain aerial |
| CN107293850A (en) * | 2016-03-31 | 2017-10-24 | 深圳光启高等理工研究院 | Metamaterial flat and preparation method thereof and metamaterial flat antenna |
| CN107293850B (en) * | 2016-03-31 | 2023-10-20 | 深圳光启高等理工研究院 | Metamaterial flat plate, preparation method thereof and metamaterial flat plate antenna |
| CN106441062A (en) * | 2016-10-19 | 2017-02-22 | 武汉市工程科学技术研究院 | Linear displacement sensor based on dual-layer electromagnetic metamaterial |
| CN113437526A (en) * | 2021-06-19 | 2021-09-24 | 西北工业大学 | Graphene/metal composite super-surface-based dual-band electromagnetic wave transmission modulation method and device |
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