CN103367903A - Meta-material antenna housing and antenna system - Google Patents
Meta-material antenna housing and antenna system Download PDFInfo
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- CN103367903A CN103367903A CN2012100929979A CN201210092997A CN103367903A CN 103367903 A CN103367903 A CN 103367903A CN 2012100929979 A CN2012100929979 A CN 2012100929979A CN 201210092997 A CN201210092997 A CN 201210092997A CN 103367903 A CN103367903 A CN 103367903A
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Abstract
The invention discloses a meta-material antenna housing. The meta-material antenna housing comprises a substrate with two side surfaces opposing to each other, and a plurality of artificial metal microstructures periodically distributed on the two opposing side surfaces. Each artificial metal microstructure comprises a first metal branch, a second metal branch and a third metal branch with both centers at the two ends of the first metal branch, fourth metal branches and fifth metal branches, wherein the second metal branch and the third metal branch are perpendicular to the first metal branch; the fourth metal branches perpendicularly extend either from the two ends of the second metal branch towards the direction of the third metal branch or from the two ends of the third metal branch towards the direction of the second metal branch; and each fifth metal branch perpendicularly extends from each fourth metal branch towards the direction of the first metal branch and the fifth metal branches and the first metal branch don't intersect. The meta-material antenna housing provided by the invention has a reflection coefficient S21 lower than that of a pure ABS material antenna housing by a decrease of 0.7 to 0.9 dB and a transmission coefficient S11 higher than that of the pure ABS material by an increase of 10 to 35 dB so that the electromagnetic performance of the antenna housing is greatly improved and the mechanical properties of the antenna housing are not damaged.
Description
Technical field
The present invention relates to the radome technical field, relate in particular to a kind of super material radome and antenna system.
Background technology
Generally speaking, antenna system all can be provided with radome.The purpose of radome is the impact that the protection antenna system is avoided wind and rain, ice and snow, sand and dust and solar radiation etc., makes the antenna system service behaviour more stable, reliable.Alleviate simultaneously wearing and tearing, the corrosion and aging of antenna system, increase the service life.But radome is the barrier of antenna front, can produce the aerial radiation ripple to absorb and reflection, changes the free space Energy distribution of antenna, and affects to a certain extent the electric property of antenna.
Cause the main cause of above-mentioned phenomenon to be: the reflection of (1) radome wall and the diffraction of inhomogeneous part can cause antenna main lobe axis shift, thereby produce collimating fault; (2) radome can cause loss to absorption and the reflection of high-frequency energy, thereby affects antenna gain.For these problems, solution in the traditional antenna cover material technique, generally focus on take to fill, the means such as blend microwave ceramics medium and composite fibre, guarantee material have well bear mechanical force and other performance in, dielectric constant and the dissipation factor of regulating material.But the material of this technique output, the energy reflection in some frequency range is still not little, and the energy transmission aspect still has the space that needs lifting.As shown in Figure 1, Fig. 1 is the S parameters simulation effect schematic diagram of the radome of existing employing ABS (Acrylonitrile Butadiene Styrene) material, from Fig. 1, adopt as can be known transmission coefficient S11 and the reflection coefficient S21 of the radome of ABS material all to have room for promotion.
Summary of the invention
Technical problem to be solved by this invention is the above-mentioned deficiency for prior art, propose a kind of utilize the design of super materials theory, in the antenna working frequency range, can effectively strengthen wave transparent power, reduce the super material radome of reflection power.
The technical scheme that the present invention solves its technical problem employing is, a kind of super material radome is proposed, it comprises a plurality of artificial metal's micro-structurals that substrate with relative both side surface and cycle are arranged in described relative both side surface, described substrate is by a plurality of super material cell of virtual division, and the relative both side surface of described super material cell respectively is attached with an artificial metal micro structure; Described artificial metal's micro-structural comprises that the first metal branch, mid point are arranged at described the first metal branch two ends and perpendicular to the second metal branch and the 3rd metal branch of the first metal branch, described the second metal branch two ends vertically are extended with the 4th metal branch to the 3rd metal branch direction, described the 3rd metal branch two ends also vertically are extended with the 4th metal branch to the second metal branch direction, and each article the 4th metal branch vertically is extended with not the five metals that intersects with the first metal branch to described the first metal branch direction and belongs to branch.
Further, the live width that described first, second, third, fourth, five metals belongs to branch is identical, and described the second metal branch and the 3rd metal branch length equate.。
Further, described super material cell length and width equates, the live width that described first, second, third, fourth, five metals belongs to branch is 0.1 millimeter.
Further, described super material cell length and width is 1.5 millimeters to 2.0 millimeters, the length of the second metal branch and the 3rd metal branch is 1.4 to 1.6 millimeters, the spacing of the second metal branch and the 3rd metal branch is 1.0 to 1.2 millimeters, the 4th metal branch length is 0.3 to 0.4 millimeter, it is 0.15 to 0.2 millimeter that five metals belongs to branch length, and substrate thickness is 4 millimeters.
Further, described substrate is made by the ABS material.
Further, described ABS material is under 8-18GHZ, and its dielectric constant is 2.5 to 3.0, and loss angle tangent is 0.01-0.05.
Further, described super material cell length and width is 1.7 millimeters; The length of the second metal branch and the 3rd metal branch is 1.464 millimeters, and the spacing of the second metal branch and the 3rd metal branch is 1.191 millimeters, and the 4th metal branch length is 0.3409 millimeter, and it is 0.175 millimeter that five metals belongs to branch length.
Further, described artificial metal's micro-structure surface is coated with the waterproof coating of 0.01 to 0.05 millimeter thickness.
Further, described super material radome also comprises retainer ring, and described substrate is cylindrical, and described retainer ring comprises annulus base plate and cylinder frame, and described annulus base plate and annulus frame are fixed described substrate.
The present invention also provides a kind of super material antenna system, and it comprises above-mentioned super material radome and antenna body, and described antenna body and described super material radome interval predeterminable range arrange.
The present invention utilizes super material principle to prepare radome, cycle is arranged artificial metal's micro-structural to improve the electromagnetic performance of radome on substrate, the reflection coefficient of the purer ABS material of the reflection coefficient S21 radome of the super material radome of the present invention few 0.7 is to 0.9dB, transmission coefficient S11 high 10 is to 35dB, especially under 14.4 to 15.3GHZ, the transmission coefficient high 15 of the purer ABS material of the transmission coefficient S11 radome of the super material radome of the present invention is to 35dB, greatly improve the electromagnetic performance of radome, can also not damage the mechanical performance of radome.
Description of drawings
Fig. 1 is the S parameters simulation effect schematic diagram of the radome made of existing employing ABS material;
Fig. 2 is the perspective view that consists of the elementary cell of super material among the embodiment;
Fig. 3 is the structural representation of super material radome in one embodiment of the invention;
Fig. 4 is the front view that surpasses material cell among Fig. 3 in the super material radome;
Fig. 5 is the reflection coefficient S21 simulation result schematic diagram of the super material radome of the present invention and pure ABS material radome among the embodiment;
Fig. 6 is the transmission coefficient S11 simulation result schematic diagram of the super material radome of the present invention and pure ABS material radome among the embodiment;
Fig. 7 is the structural representation when the super material radome of the present invention is one-body molded among the embodiment.
Embodiment
Light, as electromagnetic a kind of, it is when passing glass, because the wavelength of light is much larger than the size of atom, therefore we can use the univers parameter of glass, and the details parameter of the atom of for example refractive index, rather than composition glass is described glass to the response of light.Accordingly, when research material was to other electromagnetic responses, any yardstick also can be used the univers parameter of material in the material to electromagnetic response much smaller than the structure of electromagnetic wavelength, and for example DIELECTRIC CONSTANT ε and magnetic permeability μ describe.The structure by every of designing material is so that thereby the dielectric constant of material each point and magnetic permeability are all identical or different so that the dielectric constant of material monolithic and magnetic permeability are certain rule arranges, the magnetic permeability that rule is arranged and dielectric constant can be so that material have response on the macroscopic view to electromagnetic wave, such as converging electromagnetic wave, divergent electromagnetic ripple, transmission electromagnetic wave, electromagnetic wave absorption etc.Such have magnetic permeability that rule arranges and dielectric constant material we be referred to as super material.
As shown in Figure 2, Fig. 2 is the perspective view that consists of the elementary cell of super material among the embodiment.The elementary cell of super material comprises the first substrate 1 that artificial micro-structural 2 and this artificial micro-structural are adhered to.In the present embodiment, artificial micro-structural is artificial metal micro structure, artificial metal's micro-structural has and can produce plane or the three-dimensional topological structure of response to incident electromagnetic wave electric field and/or magnetic field, and the pattern and/or the size that change the artificial metal's micro-structural on each super material elementary cell can change each super material elementary cell to the response of incident electromagnetic wave.In the present embodiment, also be coated with second substrate 3 on the artificial micro-structural 2, second substrate 3, artificial micro-structural 2 and first substrate 1 consist of the elementary cell of super material.A plurality of super material elementary cells are arranged according to certain rules can be so that super material has the response of macroscopic view to electromagnetic wave.Because super material monolithic needs have macroscopical electromagnetic response so each super material elementary cell need form continuous response to the response of incident electromagnetic wave to incident electromagnetic wave, this size that requires each super material elementary cell is preferably 1/10th of incident electromagnetic wave wavelength less than 1/5th of incident electromagnetic wave wavelength.During this section is described, super material monolithic is by virtual a plurality of super material elementary cells that are divided into, but should know that this kind division methods only for convenience of description, should not regard super material as by a plurality of super material elementary cells splicings or assemble, super material is that artificial metal's micro-structural cycle is arranged on the substrate and can consists of in the practical application, and technique is simple and with low cost.Cycle arranges and refers to that namely the artificial metal's micro-structural on above-mentioned our artificial each super material elementary cell of dividing can produce continuous electromagnetic response to incident electromagnetic wave.
The present invention utilizes the super material radome of above-mentioned super material principle design, and it is by the topological pattern of the artificial micro-structural of design and/or the super material radomes that the gain of parameter transmission performance is good, reflection coefficient is less such as size, design baseplate material and substrate thickness of artificial micro-structural topology pattern.
As shown in Figure 3, Fig. 3 is the structural representation of super material radome in one embodiment of the invention.Super material radome comprises substrate 10, substrate is virtually divided into a plurality of super material cell 100, respectively be provided with an artificial metal micro structure 20 on two apparent surfaces of a super material cell 100, therefore described substrate comprises two apparent surfaces, and the cycle is placed with a plurality of artificial metal's micro-structurals 20 respectively on described two apparent surfaces.A plurality of artificial metal's micro-structurals 20 that the upper cycle of surface that only shows among Fig. 2 wherein arranges.Substrate 10 has thickness h.Among Fig. 2, super material radome is cuboid, but can imagine ground, can be by arbitrarily intercepting arbitrary shape with realistic demand on this cuboid.
As shown in Figure 4, Fig. 4 is the front view that surpasses material cell among Fig. 3 in the super material radome.Super material cell 100 has length cell
xAnd width cell
yArtificial metal's micro-structural 20 comprises the first metal branch 201, mid point is arranged at these the first metal branch two ends and perpendicular to the second metal branch 202 and the 3rd metal branch 203 of the first metal branch 201, described the second metal branch two ends are extended with the 4th metal branch 204 to the 3rd metal branch 203 perpendicular directions, described the 3rd metal branch two ends also are extended with the 4th metal branch 204 to the second metal branch 202 perpendicular directions, and each article the 4th metal branch 204 is extended with not the five metals that intersects with the first metal branch 201 to described the first metal branch 201 perpendicular directions and belongs to branch 205.Each strip metal branch has identical live width w, and the second metal branch 202 and the 3rd metal branch 203 equal in length are a
x, the second metal branch 202 and the 3rd metal branch 203 spacings are a
y, the 4th metal branch length is L, it is L that five metals belongs to branch length
1
During design, super material radome then has 8 geometric parameter { L, the L that can regulate and design
1, a
x, a
y, cell
x, cell
y, h, w}.When design, by large-scale calculations, to the performance that these 8 geometric parameters are got respectively super material radome under different value and the emulation various geometric, finally choose most preferably value corresponding to each geometric parameter.In a preferred version, for reducing amount of calculation, improve computation rate, the length cell of single super material cell 100
xWith width cell
yGet identical value, and 0.1 millimeter of live width w value.
Through simulation calculation, in one embodiment, as the length cell of single super material cell 100
xWith width cell
yAll value is 1.5 millimeters to 2.0 millimeters, the length a of the second metal branch and the 3rd metal branch
x1.4 to 1.6 millimeters of values, the spacing a of the second metal branch and the 3rd metal branch
y1.0 to 1.2 millimeters of values, 0.3 to 0.4 millimeter of the 4th metal branch length L value, five metals belongs to branch length L
1Has better performance when 0.15 to 0.2 millimeter of value, 4 millimeters of substrate thickness h values.
Among the present invention, the material of substrate 10 still is preferably the ABS material in addition, is preferably under 8-18GHZ, and dielectric constant is 2.5 to 3.0, and loss angle tangent is the ABS material of 0.01-0.05.When using the ABS material, its material easily obtains, intensity is high, hardness is large, good toughness, anti-stress and good, the easy processing of impact property, simultaneously the corrosive power of antiacid, alkali, salt has by force and also the characteristic of certain tolerance organic solvent dissolution, relatively meets the environment for use of super material radome.
State in the use the ABS material as substrate, and the length cell of super material cell 100
xWith width cell
yAll value is 1.7 millimeters, the length a of the second metal branch and the 3rd metal branch
x1.464 millimeters of values, the spacing a of the second metal branch and the 3rd metal branch
y1.191 millimeters of values, 0.3409 millimeter of the 4th metal branch length L value, five metals belongs to branch length L
1The performance that emulation should super material radome when 0.175 millimeter of value, 4 millimeters of substrate thickness h values, and compare with the existing simple performance of the radome of ABS material that adopts.The reflection coefficient S21 of super material radome and ABS radome and the simulated effect comparison diagram of transmission coefficient S11 are respectively as shown in Figure 5 and Figure 6.From Fig. 5 and Fig. 6 as can be known, under 14 to 16GHZ frequencies, the reflection coefficient of the purer ABS material of the reflection coefficient S21 radome of the super material radome of the present invention will lack 0.7 to 0.9dB, transmission coefficient S11 high 10 is to 35dB, especially under 14.4 to 15.3GHZ, the transmission coefficient of the purer ABS material of the transmission coefficient S11 radome of the super material radome of the present invention wants high 15 to 35dB, has greatly improved the electromagnetic performance of radome, can also not damage the mechanical performance of radome.
In addition; in order to protect the artificial metal's micro-structural that is exposed to the substrate outside not by environmental corrosion; guarantee the weatherability of super material radome, the super material radome of the present invention also all is coated with the waterproof coating of 0.01 to 0.05 millimeter thickness at two sides artificial metal's micro-structure surface.This coating water resistance is good, and is low to the loss of electromagnetism.The material of this coating can be selected thermoplastic resin and the modification kinds thereof such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyamide, polyester, Teflon, organosilicon, also thermosetting resin and the modification kinds thereof such as epoxy resin, phenolic resins, polyurethane, phenolic aldehyde can be selected, also ethylene-vinyl acetate copolymer can be selected.
As shown in Figure 7, Fig. 7 is the structural representation of integrated molding among super material radome one embodiment of the present invention.Among Fig. 7, the substrate 1000 in the super material radome is cylindrical, and its thickness is the 2-5 millimeter, and diameter is the 340-350 millimeter.Substrate 1000 is fixed on the retainer ring 2000, and retainer ring comprises the cylinder frame 2002 that circular base plate 2001 and diameter and described substrate adapt.When substrate is fixed on the retainer ring; the circumferential edge of substrate is fixing with base plate 2001 by frame 2002; in the present embodiment; the modes such as ultra-sonic welded, laser welding can be passed through they are integrally welded; at this moment; artificial metal's micro-structural on the disc of super material radome is protected by waterproof coating, and circumference is fixed and encircles 2000 protections, thus so that the watertightness performance of super material radome integral body and air-tightness reinforcement.
The present invention also provides a kind of antenna system, comprises antenna body and above-mentioned super material radome, described super material radome and antenna body interval predeterminable range.Preferably, distance is 1/4th of antenna body response electromagnetic wavelength between described super material radome and the described antenna body.
The above only is some embodiments of the present invention and/or embodiment, should not be construed as limiting the invention.For those skilled in the art, under the prerequisite that does not break away from basic thought of the present invention, can also make some improvements and modifications, and these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. super material radome, it is characterized in that: comprise a plurality of artificial metal's micro-structurals that substrate with relative both side surface and cycle are arranged in described relative both side surface, described substrate is by a plurality of super material cell of virtual division, and the relative both side surface of described super material cell respectively is attached with an artificial metal micro structure; Described artificial metal's micro-structural comprises that the first metal branch, mid point are arranged at described the first metal branch two ends and perpendicular to the second metal branch and the 3rd metal branch of the first metal branch, described the second metal branch two ends vertically are extended with the 4th metal branch to the 3rd metal branch direction, described the 3rd metal branch two ends also vertically are extended with the 4th metal branch to the second metal branch direction, and each article the 4th metal branch vertically is extended with not the five metals that intersects with the first metal branch to described the first metal branch direction and belongs to branch.
2. super material radome as claimed in claim 1 is characterized in that: the live width that described first, second, third, fourth, five metals belongs to branch is identical, and described the second metal branch and the 3rd metal branch length equate.
3. super material radome as claimed in claim 2 is characterized in that: described super material cell length and width equates, the live width that described first, second, third, fourth, five metals belongs to branch is 0.1 millimeter.
4. super material radome as claimed in claim 3, it is characterized in that: described super material cell length and width is 1.5 millimeters to 2.0 millimeters, the length of the second metal branch and the 3rd metal branch is 1.4 to 1.6 millimeters, the spacing of the second metal branch and the 3rd metal branch is 1.0 to 1.2 millimeters, the 4th metal branch length is 0.3 to 0.4 millimeter, it is 0.15 to 0.2 millimeter that five metals belongs to branch length, and substrate thickness is 4 millimeters.
5. such as each described super material radome of claim 1 to 4, it is characterized in that: described substrate is made by the ABS material.
6. super material radome as claimed in claim 5, it is characterized in that: described ABS material is under 8-18GHZ, and its dielectric constant is 2.5 to 3.0, and loss angle tangent is 0.01-0.05.
7. super material radome as claimed in claim 6, it is characterized in that: described super material cell length and width is 1.7 millimeters; The length of the second metal branch and the 3rd metal branch is 1.464 millimeters, and the spacing of the second metal branch and the 3rd metal branch is 1.191 millimeters, and the 4th metal branch length is 0.3409 millimeter, and it is 0.175 millimeter that five metals belongs to branch length.
8. super material radome as claimed in claim 1, it is characterized in that: described artificial metal's micro-structure surface is coated with the waterproof coating of 0.01 to 0.05 millimeter thickness.
9. such as claim 1 or 8 described super material radomes, it is characterized in that: described super material radome also comprises retainer ring, described substrate is cylindrical, and described retainer ring comprises annulus base plate and cylinder frame, and described annulus base plate and annulus frame are fixed described substrate.
10. a super material antenna system is characterized in that: comprise super material radome claimed in claim 1 and antenna body, described antenna body and the setting of described radome interval predeterminable range.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100929979A CN103367903A (en) | 2012-03-31 | 2012-03-31 | Meta-material antenna housing and antenna system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100929979A CN103367903A (en) | 2012-03-31 | 2012-03-31 | Meta-material antenna housing and antenna system |
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| CN103367903A true CN103367903A (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100929979A Pending CN103367903A (en) | 2012-03-31 | 2012-03-31 | Meta-material antenna housing and antenna system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654545A (en) * | 2016-07-13 | 2017-05-10 | 云南大学 | Left-handed material loading base station antenna |
| CN111029783A (en) * | 2019-12-13 | 2020-04-17 | 天津大学 | Polarization-independent electromagnetic induction-like transparent metamaterial |
| CN111224222A (en) * | 2020-02-28 | 2020-06-02 | Oppo广东移动通信有限公司 | Electronic device |
| CN111585012A (en) * | 2020-06-18 | 2020-08-25 | 西安电子科技大学 | Integrated modulable metamaterial antenna housing and antenna assembly |
| WO2021000718A1 (en) * | 2019-06-30 | 2021-01-07 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Housing assembly and electronic devices |
| WO2021169832A1 (en) * | 2020-02-25 | 2021-09-02 | 维沃移动通信有限公司 | Electronic device |
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| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
| US20100314040A1 (en) * | 2009-06-10 | 2010-12-16 | Toyota Motor Engineering & Manufacturing North America, Inc. | Fabrication of metamaterials |
| CN101924276A (en) * | 2009-06-12 | 2010-12-22 | 安德鲁有限责任公司 | The radome and the shade housing that are used for reflector antenna |
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2012
- 2012-03-31 CN CN2012100929979A patent/CN103367903A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
| US20100314040A1 (en) * | 2009-06-10 | 2010-12-16 | Toyota Motor Engineering & Manufacturing North America, Inc. | Fabrication of metamaterials |
| CN101924276A (en) * | 2009-06-12 | 2010-12-22 | 安德鲁有限责任公司 | The radome and the shade housing that are used for reflector antenna |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654545A (en) * | 2016-07-13 | 2017-05-10 | 云南大学 | Left-handed material loading base station antenna |
| WO2021000718A1 (en) * | 2019-06-30 | 2021-01-07 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Housing assembly and electronic devices |
| US11532870B2 (en) | 2019-06-30 | 2022-12-20 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Housing assembly and electronic devices |
| CN111029783A (en) * | 2019-12-13 | 2020-04-17 | 天津大学 | Polarization-independent electromagnetic induction-like transparent metamaterial |
| WO2021169832A1 (en) * | 2020-02-25 | 2021-09-02 | 维沃移动通信有限公司 | Electronic device |
| CN111224222A (en) * | 2020-02-28 | 2020-06-02 | Oppo广东移动通信有限公司 | Electronic device |
| CN111585012A (en) * | 2020-06-18 | 2020-08-25 | 西安电子科技大学 | Integrated modulable metamaterial antenna housing and antenna assembly |
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Application publication date: 20131023 |