CN102769160B - Dual-passband electromagnetic wave transparent material and radome thereof and antenna system - Google Patents
Dual-passband electromagnetic wave transparent material and radome thereof and antenna system Download PDFInfo
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- CN102769160B CN102769160B CN201210222057.7A CN201210222057A CN102769160B CN 102769160 B CN102769160 B CN 102769160B CN 201210222057 A CN201210222057 A CN 201210222057A CN 102769160 B CN102769160 B CN 102769160B
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Abstract
The present invention relates to dual-passband electromagnetic wave transparent material and radome thereof and antenna system.Dual-passband electromagnetic wave transparent material comprises the first substrate and second substrate be made up of nonmetallic materials, and to be folded between first substrate and second substrate and to be arranged into latticed multiple first metal micro structure, gapless between the first adjacent metal micro structure, and described first metal micro structure is decussate texture.The present invention also provides a kind of radome and antenna system.Dual-passband electromagnetic wave transparent material of the present invention and radome thereof and antenna system can be operated in two frequency ranges, and the wave transmission efficiency in these two frequency ranges is very high, and can shield other frequency ranges, thus exclusive PCR, ensure that the works fine environment of antenna.After antenna adds radome, the radianting capacity of antenna obtains reinforcement, effectively improves gain.
Description
Technical field
The present invention relates to radome, more particularly, relate to dual-passband electromagnetic wave transparent material and radome thereof and antenna system.
Background technology
Generally, antenna system all can be provided with radome.The object of radome protects antenna system from the impact of wind and rain, ice and snow, sand and dust and solar radiation etc., makes antenna system service behaviour more stable, reliable.Alleviate the wearing and tearing of antenna system, corrosion and aging simultaneously, increase the service life.But radome is the barrier before antenna, can produces aerial radiation ripple and absorb and reflection, change the free space Energy distribution of antenna, and affect the electric property of antenna to a certain extent.
Prepare material many employings dielectric constant of radome and loss angle tangent is low, mechanical strength is high material at present, as fiberglass, epoxy resin, high molecular polymer etc., the dielectric constant of material has unadjustable property.Structure mostly is uniform single walled structure, sandwich and spatial skeleton structure etc.; 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; under protection antenna is from the condition of external environment influence, do not possess the function of enhance antenna directionality and raising antenna gain, wave penetrate capability is poor.And the working frequency range of radome is narrower and working frequency range is single, needs to change radome under different frequency range demands and multiband demand, reusing of resource cannot be realized, cause the waste of resource and the raising of equipment cost.
Summary of the invention
The technical problem to be solved in the present invention is, the above-mentioned wave penetrate capability for prior art is poor, working frequency range is narrower and cannot meet the defect of multiband demand, provides dual-passband electromagnetic wave transparent material and radome thereof and antenna system.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of dual-passband electromagnetic wave transparent material, comprise the first substrate and second substrate be made up of nonmetallic materials, and to be folded between first substrate and second substrate and to be arranged into latticed multiple first metal micro structure, gapless between the first adjacent metal micro structure, and described first metal micro structure is decussate texture.
In dual-passband electromagnetic wave transparent material of the present invention, described dual-passband electromagnetic wave transparent material also comprises the second metal micro structure of the multiple array arrangements being covered in described first substrate outer surface and is covered in the 3rd metal micro structure of multiple array arrangements of described second substrate outer surface.
In dual-passband electromagnetic wave transparent material of the present invention, described second metal micro structure is the square patch offering snowflake type groove structure.
In dual-passband electromagnetic wave transparent material of the present invention, described 3rd metal micro structure is the square patch offering snowflake type groove structure.
In dual-passband electromagnetic wave transparent material of the present invention, described snowflake type groove structure comprises cross bath structure and is separately positioned on four in-line groove structures on four end points of described cross bath structure.
In dual-passband electromagnetic wave transparent material of the present invention, described cross bath structure and the in-line groove vertically divided measure-alike by two is formed; The flute length of described in-line groove is 2.1 ~ 2.6mm, and groove width is 0.24 ~ 0.27mm.
In dual-passband electromagnetic wave transparent material of the present invention, the flute length of described in-line groove structure is 1.9 ~ 2.5mm, and groove width is 0.24 ~ 0.27mm.
In dual-passband electromagnetic wave transparent material of the present invention, the distance between adjacent snowflake type groove structure is 3.36 ~ 3.92mm.
The present invention also provides a kind of radome, for being located at antenna, comprises double frequency band-pass electromagnetic wave transparent material as above.
The present invention also provides a kind of antenna system, and comprise antenna and radome as above, described radome covers on antenna.
Implement technical scheme of the present invention, have following beneficial effect: by adhering to the metal micro structure of given shape on substrate, obtain the electromagnetic response needed, the wave penetrate capability of radome is strengthened, antijamming capability increases.Can by regulating shape, the size of metal micro structure, change the relative dielectric constant of material, refractive index and impedance, thus realize the impedance matching with air, to increase the transmission of incident electromagnetic wave to greatest extent, decrease the restriction to material thickness and dielectric constant when traditional antenna cover designs.Dual-passband electromagnetic wave transparent material of the present invention and radome thereof and antenna system can be operated in two frequency ranges, and the wave transmission efficiency in these two frequency ranges is very high, and can shield other frequency ranges, thus exclusive PCR, ensure that the works fine environment of antenna.After antenna adds radome, the radianting capacity of antenna obtains reinforcement, effectively improves gain.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the dual-passband electromagnetic wave transparent material according to one embodiment of the invention;
Fig. 2 is the arrangement schematic diagram of the first metal micro structure according to one embodiment of the invention;
Fig. 3 is the schematic diagram of single first metal micro structure according to one embodiment of the invention;
Fig. 4 is the arrangement schematic diagram of the second metal micro structure at first substrate outer surface of foundation one embodiment of the invention;
Fig. 5 is the arrangement schematic diagram of adjacent two the second metal micro structures shown in Fig. 4;
Fig. 6 is the schematic diagram of the snowflake type groove structure shown in Fig. 4;
Fig. 7 is the arrangement schematic diagram of the 3rd metal micro structure at second substrate outer surface of foundation one embodiment of the invention;
Fig. 8 is the S parameter emulation schematic diagram according to the dual-passband electromagnetic wave transparent material of one embodiment of the invention.
Embodiment
The invention provides a kind of double frequency band-pass electromagnetic wave transparent material, as shown in Figure 1, comprise the first substrate 10 and second substrate 20 be made up of nonmetallic materials, and to be folded between first substrate 10 and second substrate 20 and to be arranged into latticed multiple first metal micro structure 31.Be understandable that, the number of the metal micro structure shown in Figure of description is only signal, for illustration of the arrangement situation between metal micro structure, not as limitation of the present invention.
The material manufacturing substrate has multiple choices, such as pottery, FR4, F4B(polytetrafluoroethylene), HDPE(high density polyethylene (HDPE), HighDensityPolyethylene), ABS(AcrylonitrileButadieneStyrene), ferroelectric material or ferromagnetic material etc.First substrate 10, second substrate 20 preferably dielectric constant are 3.4, and loss angle tangent is the material of 0.0028.The planar structure with certain geometrical pattern that first metal micro structure 31 is made for electric conducting material.Here electric conducting material, it can be the metal material that the electric conductivity such as gold, silver, copper is good, or main component is one or both the alloy material in gold, silver, copper, also can be the nonmetallic materials that carbon nano-tube, Al-Doped ZnO, indium tin oxide etc. can conduct electricity.In the present invention, preferably copper or silver.The thickness of first substrate 10, second substrate 20 is 0.5 ~ 1.5mm.
The concrete geometry pattern of the first metal micro structure 31 is shown in shown in Fig. 2 and Fig. 3, gapless between the first adjacent metal micro structure 31, and the first metal micro structure 31 is decussate texture.Decussate texture is measure-alike by two and orthogonal metal wire is formed, the length a=6.5mm of metal wire, live width b=3.1mm.
In an embodiment of the present invention, dual-passband electromagnetic wave transparent material also comprises the second metal micro structure 32 of the multiple array arrangements being covered in first substrate 10 outer surface and is covered in the 3rd metal micro structure 33 of multiple array arrangements of second substrate 20 outer surface.As shown in Figure 4,5, the second metal micro structure 32 is for offering the square patch of snowflake type groove structure 321.In an embodiment of the present invention, square patch is the length of side c=6.24mm of square patch, square patch, the spacing w1=0.52mm between adjacent prismatic paster.
As shown in Figure 6, snowflake type groove structure 321 comprises cross bath structure A and is separately positioned on four in-line groove structure B on four end points of cross bath structure A the concrete shape of snowflake type groove structure 321.Cross bath structure A and the in-line groove vertically divided measure-alike by two is formed.In an embodiment of the present invention, the flute length e of in-line groove is 2.1 ~ 2.6mm, groove width w2 is 0.24 ~ 0.27mm.The flute length d of in-line groove structure B is 1.9 ~ 2.5mm, groove width w2 is 0.24 ~ 0.27mm.Distance between snowflake type groove structure 321 on two adjacent square patchs is 3.36 ~ 3.92mm.
In an embodiment of the present invention, be covered in the 3rd metal micro structure 33 of multiple array arrangements of second substrate 20 outer surface also for offering the square patch of snowflake type groove structure, the 3rd metal micro structure 33 is identical with the shape and size of the second metal micro structure 32.3rd metal micro structure 33 is shown in Fig. 7 in the arrangement rule of second substrate 20 outer surface.
The effect of dual-passband electromagnetic wave transparent material of the present invention is described below in conjunction with specific embodiment.In one embodiment, the first metal micro structure 31 is decussate texture, and by two, measure-alike and orthogonal metal wire is formed, the length a=6.5mm of metal wire, live width b=3.1mm.Second, third metal micro structure 32,33 is the square patch offering snowflake type groove structure 321, and the length of side of square patch is equal, length of side c=6.24mm, the spacing w1=0.26mm between adjacent prismatic paster.The flute length d of the groove width w2=0.26mm of snowflake type groove structure 321, the flute length e=2.48mm of in-line groove, in-line groove structure B is 2.34mm.In an embodiment of the present invention, first substrate 10 and second substrate 20 are obtained by polytetrafluoroethylene (F4B).First metal micro structure 31 and second, third metal micro structure 32,33 are made of copper.The dielectric constant of first substrate 10, second substrate 20 is 3.4, and loss angle tangent is 0.0028.The thickness of first substrate 10, second substrate 20 is 0.65mm, and the thickness of metal micro structure is 0.018mm.Above-mentioned parameter is only an example, not as limitation of the present invention.
By filling liquid raw substrate or interconnected by assembling between first substrate 10 and second substrate 20.The logical overetched mode of metal micro structure 31,32,33 is attached on substrate, and the modes such as certain metal micro structure 31,32,33 also can adopt plating, bores quarter, photoetching, electronics quarter or ion quarter are attached on first substrate 10 or second substrate 20.First substrate 10 and second substrate 20 also can adopt other materials to make, such as pottery, HIPS(impact resistant polystyrene, Highimpactpolystyrene) material, ferroelectric material, ferrite material or ferromagnetic material make.
Emulate the dual-passband electromagnetic wave transparent material with above-mentioned parameter, its S parameter analogous diagram as shown in Figure 8.Can be seen by Fig. 8, within the scope of 0 ~ 25GHz, occurred two passbands, and in each passband, S21 is very high, wave transmission effect is fine.And very little in other frequency range S21 parameter, and reflection coefficient is very large, has filter action.When practical application, by regulating shape, the size of first, second, third metal micro structure, the relative dielectric constant of material, refractive index and impedance can be changed, thus two passbands move to high frequency or low frequency, or change bandwidth.
Double frequency band-pass electromagnetic wave transparent material also can adopt multilager base plate, such as comprises 3 laminar substrates, is equipped with the metal micro structure of above-mentioned arrangement between adjacent substrate.The effect of dual-passband can be reached equally.This performance can be used in leads to electromagnetic the application scenario having particular/special requirement with resistance.
Therefore, the present invention also provides a kind of radome, and this radome dual-passband electromagnetic wave transparent material is by mentioned earlier made; for covering at antenna, while antenna is played a protective role, can also ensure that antenna normally works at working frequency range; mask uncorrelated frequency range, exclusive PCR.
It should be noted that, the shape of radome can be the tabular identical with the dual-passband electromagnetic wave transparent material shape in accompanying drawing, also the shape of designing antenna cover can be carried out according to the actual requirements, the shape (conformal radome) etc. being such as designed to spherical shape or mate with antenna pattern, also do not get rid of the shape using multiple plate-like structure to be spliced into needs, the present invention is not restricted this.
The present invention also provides a kind of antenna system, comprises antenna, and radome as described above, and radome covers on antenna.Antenna comprises radiation source, feed element etc., and concrete formation can consult correlation technique data, and the present invention is not restricted this.Antenna body can be such as but not limited to plate aerial, microwave antenna, radar antenna etc.
Dual-passband electromagnetic wave transparent material of the present invention and radome thereof and antenna system can be operated in two frequency ranges, and the wave transmission efficiency in these two frequency ranges is very high, and can shield other frequency ranges, thus exclusive PCR, ensure that the works fine environment of antenna.After antenna adds radome, the radianting capacity of antenna obtains reinforcement, effectively improves gain.
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 is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (4)
1. a dual-passband electromagnetic wave transparent material, it is characterized in that, comprise the first substrate and second substrate be made up of nonmetallic materials, and to be folded between first substrate and second substrate and to be arranged into latticed multiple first metal micro structure, gapless between the first adjacent metal micro structure, and described first metal micro structure is decussate texture, described decussate texture is measure-alike by two and orthogonal metal wire is formed; Described dual-passband electromagnetic wave transparent material also comprises the second metal micro structure of the multiple array arrangements being covered in described first substrate outer surface and is covered in the 3rd metal micro structure of multiple array arrangements of second substrate outer surface, and described 3rd metal micro structure is identical with the shape and size of the second metal micro structure; Described second metal micro structure and the 3rd metal micro structure are the square patch offering snowflake type groove structure, each length of side of square patch is equal, and described snowflake type groove structure comprises cross bath structure and is separately positioned on four in-line groove structures on four end points of described cross bath structure; The groove width of described cross bath structure and in-line groove structure is 0.24 ~ 0.27mm, and the flute length of cross bath structure is 2.1 ~ 2.6mm, and the flute length of in-line groove structure is 1.9 ~ 2.5mm.
2. dual-passband electromagnetic wave transparent material according to claim 1, is characterized in that, the distance between adjacent snowflake type groove structure is 3.36 ~ 3.92mm.
3. a radome, is characterized in that, for being located at antenna, comprises dual-passband electromagnetic wave transparent material as claimed in claim 1 or 2.
4. an antenna system, is characterized in that, comprise antenna and radome as claimed in claim 3, described radome covers on antenna.
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| CN102769160B true CN102769160B (en) | 2016-04-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102931482B (en) * | 2012-11-09 | 2015-09-23 | 北京大学 | A kind of symmetrical multi-layer dual-band antenna cover structure and preparation method |
| CN103401048B (en) * | 2013-08-07 | 2016-08-10 | 中国科学院长春光学精密机械与物理研究所 | Mixed cell frequency-selective surfaces |
| CN104934715A (en) * | 2014-03-18 | 2015-09-23 | 深圳光启创新技术有限公司 | Multi-frequency-band wave-transparent metamaterial, antenna cover and antenna system |
| CN104934717A (en) * | 2014-03-18 | 2015-09-23 | 深圳光启创新技术有限公司 | Selective-frequency-penetrable envelope, antenna cover and antenna system |
| CN107834194B (en) * | 2017-10-18 | 2023-10-10 | 西安天和防务技术股份有限公司 | Filtering antenna housing |
| CN107613187B (en) * | 2017-11-10 | 2020-12-08 | 四川沃加科技有限公司 | Anti-interference security monitoring device |
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| US5208603A (en) * | 1990-06-15 | 1993-05-04 | The Boeing Company | Frequency selective surface (FSS) |
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| JP5217494B2 (en) * | 2007-05-08 | 2013-06-19 | 旭硝子株式会社 | Artificial medium, method for manufacturing the same, and antenna device |
| CN102354811A (en) * | 2011-08-15 | 2012-02-15 | 浙江大学 | Completely matched refraction-free radome formed by utilizing sub-wavelength resonance units |
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| US5208603A (en) * | 1990-06-15 | 1993-05-04 | The Boeing Company | Frequency selective surface (FSS) |
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Effective date of registration: 20210706 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. |