CN102760947A - K-band ultra-wideband wave-transmitting radome - Google Patents
K-band ultra-wideband wave-transmitting radome Download PDFInfo
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- CN102760947A CN102760947A CN2012102204907A CN201210220490A CN102760947A CN 102760947 A CN102760947 A CN 102760947A CN 2012102204907 A CN2012102204907 A CN 2012102204907A CN 201210220490 A CN201210220490 A CN 201210220490A CN 102760947 A CN102760947 A CN 102760947A
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Abstract
The invention discloses a K-band ultra-wideband wave-transmitting radome. The radome is virtually divided into multiple basic units, the size of each basic unit is less than 1/5 of the wavelength of the response electromagnetic wave; each basic unit comprises first, second, third and fourth base plates which are made of the same material; a first artificial microstructure is attached to the external surface of the first base plate, a second artificial microstructure is sandwiched between the first base plate and the second base plate, a third artificial microstructure is sandwiched between the second base plate and the third base plate, a fourth artificial microstructure is sandwiched between the third base plate and the fourth base plate, and a fifth artificial microstructure is attached to the external surface of the fourth base plate. According to the invention, the wave-transmitting radome is designed based on the metamaterial principle, multiple subunit layers are arranged, and the impedance of each subunit layer is gradually changed so as to realize the impedance matching and wideband wave-transmitting effect. The wave transmission rate of the radome at the K band is more than 80%.
Description
Technical field
The present invention relates to a kind of radome, relate in particular to the ultra wideband of a kind of K wave band and pass through the wave antenna cover.
Background technology
Generally speaking, antenna system all can be provided with radome.The purpose of radome is the influence 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 wearing and tearing, the corrosion and aging of antenna system simultaneously, 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 influences the electric property of antenna to a certain extent.
At present the material of preparation radome adopts dielectric constant and loss angle tangent is low, mechanical strength is high material more, and like fiberglass, epoxy resin, high molecular polymer etc., the dielectric constant of material has unadjustable property.Mostly be uniform single walled structure, sandwich and spatial skeleton structure etc. on the structure; The design of cone wall thickness need take into account operation wavelength, radome size and dimension, environmental condition, material therefor in factors such as electric and structural performances; Difficulty reaches high ripple requirement thoroughly, and the working frequency range of radome is narrower, under different frequency range demands, needs to change radome; The repeated use of resource be can't realize, the waste of resource and the raising of equipment cost caused.
Summary of the invention
Technical problem to be solved by this invention is, to the above-mentioned deficiency of prior art, proposes a kind of radome that all has good wave penetrate capability at whole K wave band (18-27GHZ).
The present invention solves the technical scheme that its technical problem adopts, and proposes the ultra wideband of a kind of K wave band and passes through the wave antenna cover, and it is virtually divided into a plurality of elementary cells, and each basic-cell dimensions is less than 1/5th of required response electromagnetic wavelength; Said elementary cell comprises first, second, third and the tetrabasal that material is identical; Said first outer surface of substrate is attached with the first artificial micro-structural; Be folded with the second artificial micro-structural between said first substrate and second substrate; Be folded with the third party between said second substrate and the 3rd substrate and make micro-structural; Be folded with four-player between said the 3rd substrate and the tetrabasal and make micro-structural, said tetrabasal outer surface is attached with the 5th artificial micro-structural; The said first artificial micro-structural is the filled squares metal patch; The said second artificial micro-structural is " ten " font metal structure; It is the filled squares metal patch of the length of side greater than the first artificial micro-structural that said third party makes micro-structural; It is identical with the second artificial micro-structural that said four-player is made the micro-structural shape, and the said the 5th artificial micro-structural shape is identical with the first artificial micro-structural.
Further, said baseplate material is that relative dielectric constant is 4.0 to 4.5, and loss angle tangent is 0.02 to 0.03 FR4 material.
Further, said elementary cell length and width size equates that length and width are of a size of 2.4 to 3.0 millimeters.
Further, the said first artificial micro-structural is the filled squares metal patch of 0.4 to 0.7 millimeter of the length of side; Two strip metal branch length of the said second artificial micro-structural are all identical with live width, and length is 2.4 to 3.0 millimeters, and live width is 0.2 millimeter.
Further, said third party makes long 0.2 to 0.3 millimeter of the micro-structural side ratio first artificial micro-structural length of side.
Further, also be coated with protective layer on the said first artificial micro-structural and the 5th artificial micro-structural.
Further, said first to the 5th artificial micro-structural is made of copper or silver.
Further, said baseplate material is that relative dielectric constant is 4.3, and loss angle tangent is 0.025.
Further, the said first artificial micro-structural length of side is 0.6 millimeter; The said second artificial micro-structural length is 2.6 millimeters.
Further, said elementary cell length and width are of a size of 2.6 millimeters.
Further, said first to the 5th artificial micro-structural through etching, bore to carve, electronics is carved or electronics is carved and is attached to each substrate surface.
The present invention passes through the wave antenna cover through adopting ultra material principle design, through the impedance transition mechanism that multiplelayer microstructure makes that radome is whole being set and then reaching impedance matching and wideband passes through the ripple effect.It passes through the ripple rate and reaches more than 80% at the K wave band in the present invention.
Description of drawings
Fig. 1 is the perspective view of the elementary cell of the ultra material of formation;
Fig. 2 is for constituting the perspective view that the ultra wideband of K wave band of the present invention passes through the elementary cell of wave antenna cover;
Fig. 3 is the first artificial metal micro structure topological diagram;
Fig. 4 is second artificial metal's micro-structural topological diagram;
Fig. 5 third party makes the metal micro structure topological diagram;
Fig. 6 four-player is made the metal micro structure topological diagram;
Fig. 7 the 5th artificial metal's micro-structural topological diagram;
Fig. 8 is the S parameters simulation figure of the radome that adopts pure FR4 material and process;
Fig. 9 passes through the S parameters simulation figure of wave antenna cover for the ultra wideband of K wave band of the present invention;
Figure 10 passes through the impedance matching design sketch of wave antenna cover for the ultra wideband of K wave band of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
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 the response of glass to light.Accordingly, when research material was to other electromagnetic responses, any yardstick also can be used the univers parameter of material much smaller than the structure of electromagnetic wavelength to electromagnetic response in the material, and for example DIELECTRIC CONSTANTS and magnetic permeability μ describe.Thereby the structure through every of designing material makes all identical with magnetic permeability or different dielectric constant that makes material monolithic of the dielectric constant of material each point and magnetic permeability be certain rule and arranges; Magnetic permeability that rule is arranged and dielectric constant can make material that electromagnetic wave is had the response on the macroscopic view, for example converge electromagnetic wave, divergent electromagnetic ripple etc.Such has magnetic permeability that rule arranges and the material of dielectric constant is referred to as ultra material.
As shown in Figure 1, Fig. 1 is the perspective view of the elementary cell of the ultra material of formation.The elementary cell of ultra material comprises first substrate 1 that artificial micro-structural 2 and this artificial micro-structural are adhered to.Artificial micro-structural can be artificial metal's micro-structural; Artificial metal's micro-structural has and can produce the 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 ultra material elementary cell can change the response of each ultra material elementary cell to incident electromagnetic wave.Also can be coated with second substrate, 3, the second substrates 3, artificial micro-structural 2 and first substrate 1 on the artificial micro-structural 2 and constitute the elementary cell of ultra material.A plurality of ultra material elementary cells are arranged according to certain rules and can be made ultra material electromagnetic wave had the response of macroscopic view.Because ultra material monolithic needs have macroscopical electromagnetic response so each ultra material elementary cell need form continuous response to the response of incident electromagnetic wave to incident electromagnetic wave; This size that requires each ultra 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; The material monolithic that will surpass that we are artificial is divided into a plurality of ultra material elementary cells; But it is convenient to know that this kind division methods is merely description; Should not regard ultra material as by a plurality of ultra material elementary cells splicings or assemble, ultra material is that artificial metal's micro-structural cycle is arranged on the base material and can constitutes in the practical application, and technology is simple and with low cost.Artificial metal's micro-structural that cycle arranges on each the ultra material elementary cell that promptly refers to above-mentioned artificial division can produce continuous electromagnetic response to incident electromagnetic wave.
The present invention utilizes the ultra wideband of above-mentioned ultra material principle design K wave band to pass through the wave antenna cover, and different with Fig. 1 is that the elementary cell that the ultra wideband of K wave band of the present invention passes through the wave antenna cover comprises multilager base plate, all is attached with different micro-structurals on every laminar substrate.Realize the effect that impedance matching and wideband pass through ripple through designing arranging of different micro-structurals.The present invention designs through following mode: (1) is set up circuit model, emulation through transmission line theory and is adjusted this circuit model until obtaining required effect and drawing electric capacity and the inductance value in the final circuit model; (2) design different micro-structurals to realize electric capacity and the inductance value in the foregoing circuit model.With the capacitance of the corresponding subelement of metal patch realization change, realize changing the inductance value of corresponding subelement with " ten " font metal structure among the present invention.Describe the topological structure and the size of the artificial micro-structural of adhering on each laminar substrate among the present invention below in detail.
It is as shown in Figure 2 that the ultra wideband of K wave band of the present invention passes through the elementary cell of wave antenna cover, and it comprises first substrate 10, second substrate 20, the 3rd substrate 30, tetrabasal 40.Wherein, the length and width of elementary cell equate that length and width are preferably dimensioned to be 2.4 to 3.0 millimeters, more preferably 2.6 millimeters.Among the present invention; First substrate, 10 outer surfaces are attached with the first artificial micro-structural; Be folded with the second artificial micro-structural between first substrate 10 and second substrate 20; Be folded with the third party between second substrate 20 and the 3rd substrate 30 and make micro-structural, be folded with four-player between the 3rd substrate 30 and the tetrabasal 40 and make micro-structural, tetrabasal 40 outer surfaces are attached with the 5th artificial micro-structural.Folder is established and is meant that artificial micro-structural is attached on arbitrary surface on contacted two surfaces of two adjacent substrate.
It is 4.0 to 4.5 that baseplate material is preferably relative dielectric constant, and loss angle tangent is 0.02 to 0.03 FR4 material.More preferably, baseplate material is that relative dielectric constant is 4.3, and loss angle tangent is 0.025 FR4 material.In the present embodiment; Because first micro-structural and the 5th micro-structural are exposed outside; Also can be at first micro-structural and the 5th micro-structure surface protective mulch; Be coated with the radome of protective layer, its each inner micro-structural all can effectively avoid being influenced by the infiltration of objects such as the steam of outside and corrosion the dielectric property of radome, the useful life that can improve radome.
Modes such as first to the 5th artificial micro-structural can be through etching, bore to carve, electronics is carved, ion quarter are attached on each substrate surface.Wherein be etched to more preferably technology.
Please with reference to Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, Fig. 3 to Fig. 7 is respectively the topology figure of first to the 5th artificial metal's micro-structural.The first artificial metal micro structure is the filled squares metal patch of 0.4 to 0.7 millimeter of the length of side; Second artificial metal's micro-structural is " ten " font metal structure, and its two strip metals branch length is all identical with live width, and length is 2.4 to 3.0 millimeters, and live width is 0.2 millimeter; It is the filled squares metal patch that the third party makes metal micro structure, long 0.2 to 0.3 millimeter of its side ratio first artificial metal micro structure length of side; It is identical with second artificial metal's micro-structural that four-player is made metal micro structure; The 5th artificial metal's micro-structural is identical with the first artificial metal micro structure.Adopt above-mentioned artificial metal's structure can make impedance transition mechanism in the present embodiment, thereby reach impedance matching and effect that wideband passes through ripple.
Example as a comparison, the S parameters simulation that Fig. 8 shows the radome that uses traditional pure FR4 material preparation is figure as a result, and Fig. 9 is the S parameters simulation of radome of the present invention figure as a result.Can find out that from the contrast of Fig. 8 and Fig. 9 the sheet material wave penetrate capability after K wave band (18-27GHZ) adds artificial metal's micro-structural improves a lot.
Figure 10 is the impedance matching test result figure of radome of the present invention.As can be seen from Figure 10, after the present invention adopted artificial metal's micro-structural of multilayer coupling, its impedance and air coupling was splendid in the K wave band, and the resistance value average approximates 1, passes through the ripple rate more than 80%.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than 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 forms, these all belong within the protection of the present invention.
Claims (10)
1. the ultra wideband of K wave band passes through the wave antenna cover, and it is characterized in that: said radome is virtually divided into a plurality of elementary cells, and each basic-cell dimensions is less than 1/5th of required response electromagnetic wavelength; Said elementary cell comprises first, second, third and the tetrabasal that material is identical; Said first outer surface of substrate is attached with the first artificial micro-structural; Be folded with the second artificial micro-structural between said first substrate and second substrate; Be folded with the third party between said second substrate and the 3rd substrate and make micro-structural; Be folded with four-player between said the 3rd substrate and the tetrabasal and make micro-structural, said tetrabasal outer surface is attached with the 5th artificial micro-structural; The said first artificial micro-structural is the filled squares metal patch; The said second artificial micro-structural is " ten " font metal structure; It is the filled squares metal patch of the length of side greater than the first artificial micro-structural that said third party makes micro-structural; It is identical with the second artificial micro-structural that said four-player is made the micro-structural shape, and the said the 5th artificial micro-structural shape is identical with the first artificial micro-structural.
2. radome as claimed in claim 1 is characterized in that: said baseplate material is that relative dielectric constant is 4.0 to 4.5, and loss angle tangent is 0.02 to 0.03 FR4 material.
3. radome as claimed in claim 2 is characterized in that: said elementary cell length and width size equates that length and width are of a size of 2.4 to 3.0 millimeters.
4. radome as claimed in claim 3 is characterized in that: the said first artificial micro-structural is the filled squares metal patch of 0.4 to 0.7 millimeter of the length of side; Two strip metal branch length of the said second artificial micro-structural are all identical with live width, and length is 2.4 to 3.0 millimeters, and live width is 0.2 millimeter.
5. like claim 1 or 4 described radomes, it is characterized in that: said third party makes long 0.2 to 0.3 millimeter of the micro-structural side ratio first artificial micro-structural length of side.
6. radome as claimed in claim 1 is characterized in that: also be coated with protective layer on the said first artificial micro-structural and the 5th artificial micro-structural.
7. radome as claimed in claim 1 is characterized in that: said first to the 5th artificial micro-structural is made of copper or silver.
8. radome as claimed in claim 2 is characterized in that: said baseplate material is that relative dielectric constant is 4.3, and loss angle tangent is 0.025.
8, radome as claimed in claim 4 is characterized in that: the said first artificial micro-structural length of side is 0.6 millimeter; The said second artificial micro-structural length is 2.6 millimeters.
9. radome as claimed in claim 3 is characterized in that: said elementary cell length and width are of a size of 2.6 millimeters.
10. radome as claimed in claim 1 is characterized in that: said first to the 5th artificial micro-structural through etching, bore to carve, electronics is carved or electronics is carved and is attached to each substrate surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210220490.7A CN102760947B (en) | 2012-06-29 | 2012-06-29 | K-band ultra-wideband wave-transmitting radome |
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| CN201210220490.7A CN102760947B (en) | 2012-06-29 | 2012-06-29 | K-band ultra-wideband wave-transmitting radome |
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| CN102760947A true CN102760947A (en) | 2012-10-31 |
| CN102760947B CN102760947B (en) | 2014-07-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409848A (en) * | 2014-11-27 | 2015-03-11 | 张永超 | Novel antenna cover |
| CN104409847A (en) * | 2014-11-27 | 2015-03-11 | 张永超 | Novel large-angle wave transmission antenna cover |
| CN104934705A (en) * | 2014-03-18 | 2015-09-23 | 深圳光启创新技术有限公司 | Bandpass filter metamaterial, antenna cover and antenna system |
| CN112542685A (en) * | 2020-12-18 | 2021-03-23 | 北京大学 | Microwave and terahertz wave all-metal hyperbolic metamaterial antenna and implementation method thereof |
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| CN102354812A (en) * | 2011-08-25 | 2012-02-15 | 西北工业大学 | Micro-strip antenna housing with high gain |
| CN102480909A (en) * | 2011-03-31 | 2012-05-30 | 深圳光启高等理工研究院 | Wave absorbing metamaterial |
| CN102479998A (en) * | 2011-03-15 | 2012-05-30 | 深圳光启高等理工研究院 | Electromagnetic transparent metamaterial |
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2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102479998A (en) * | 2011-03-15 | 2012-05-30 | 深圳光启高等理工研究院 | Electromagnetic transparent metamaterial |
| CN102480909A (en) * | 2011-03-31 | 2012-05-30 | 深圳光启高等理工研究院 | Wave absorbing metamaterial |
| CN102354812A (en) * | 2011-08-25 | 2012-02-15 | 西北工业大学 | Micro-strip antenna housing with high gain |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934705A (en) * | 2014-03-18 | 2015-09-23 | 深圳光启创新技术有限公司 | Bandpass filter metamaterial, antenna cover and antenna system |
| CN104934705B (en) * | 2014-03-18 | 2024-02-02 | 深圳光启高等理工研究院 | Bandpass filtering metamaterial, radome and antenna system |
| CN104409848A (en) * | 2014-11-27 | 2015-03-11 | 张永超 | Novel antenna cover |
| CN104409847A (en) * | 2014-11-27 | 2015-03-11 | 张永超 | Novel large-angle wave transmission antenna cover |
| CN112542685A (en) * | 2020-12-18 | 2021-03-23 | 北京大学 | Microwave and terahertz wave all-metal hyperbolic metamaterial antenna and implementation method thereof |
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| Publication number | Publication date |
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| CN102760947B (en) | 2014-07-02 |
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Effective date of registration: 20210707 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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