CN102769160A - Dual-passband wave-transmitting material, radome and antenna system - Google Patents
Dual-passband wave-transmitting material, radome and antenna system Download PDFInfo
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- CN102769160A CN102769160A CN2012102220577A CN201210222057A CN102769160A CN 102769160 A CN102769160 A CN 102769160A CN 2012102220577 A CN2012102220577 A CN 2012102220577A CN 201210222057 A CN201210222057 A CN 201210222057A CN 102769160 A CN102769160 A CN 102769160A
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Abstract
The invention relates to a dual-passband wave-transmitting material, a radome and an antenna system. The dual-passband wave-transmitting material comprises a first substrate and a second substrate which are made of non-metal materials, and a plurality of first metal micro-structures clamped between the first substrate and the second substrate and arranged in a latticed manner, wherein no gap is reserved between the adjacent first metal micro-structures; and the first metal micro-structures adopt cross-shaped structures. The invention also provided a radome and an antenna system. The dual-passband wave-transmitting material, the radome and the antenna system, provided by the invention, can work in two frequency bands, have high wave-transmitting efficiency in the two frequency bands, and can shield other frequency bands, thereby eliminating interference and ensuring favorable work environments of the antenna. After the antenna is equipped with the radome, the radiating capacity of the antenna is enhanced and the gain is effectively improved.
Description
Technical field
The present invention relates to radome, more particularly, relate to bilateral band electromagnetic wave transparent material and radome thereof and antenna system.
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; Protecting antenna to avoid not possessing enhance antenna directionality and the function that improves antenna gain under the condition of external environment influence, wave penetrate capability is relatively poor.And the working frequency range of radome is narrower and working frequency range is single, under different frequency range demands and multiband demand, needs to change radome, can't realize the repeated use of resource, causes the waste of resource and the raising of equipment cost.
Summary of the invention
The technical problem that the present invention will solve is, and is relatively poor to the above-mentioned wave penetrate capability of prior art, working frequency range is narrower and can't satisfy the defective of multiband demand, and bilateral band electromagnetic wave transparent material and radome thereof and antenna system are provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of bilateral band electromagnetic wave transparent material; Comprise first substrate and second substrate processed by nonmetallic materials; And be folded between first substrate and second substrate and be arranged into latticed a plurality of first metal micro structure; Do not have the gap between the first adjacent metal micro structure, and said first metal micro structure is a decussate texture.
In bilateral band electromagnetic wave transparent material of the present invention, said bilateral band electromagnetic wave transparent material also comprises second metal micro structure and the 3rd metal micro structure that is covered in a plurality of array arrangements of said second outer surface of substrate of a plurality of array arrangements that are covered in said first outer surface of substrate.
In bilateral band electromagnetic wave transparent material of the present invention, said second metal micro structure is the square patch that offers the snowflake type groove structure.
In bilateral band electromagnetic wave transparent material of the present invention, said the 3rd metal micro structure is the square patch that offers the snowflake type groove structure.
In bilateral band electromagnetic wave transparent material of the present invention, said snowflake type groove structure comprises the cross bath structure and is separately positioned on four in-line groove structures on four end points of said cross bath structure.
In bilateral band electromagnetic wave transparent material of the present invention, identical and in-line groove that vertically divide equally constitutes said cross bath structure by two sizes; The flute length of said in-line groove is 2.1～2.6mm, and groove width is 0.24～0.27mm.
In bilateral band electromagnetic wave transparent material of the present invention, the flute length of said in-line groove structure is 1.9～2.5mm, and groove width is 0.24～0.27mm.
In bilateral band electromagnetic wave transparent material of the present invention, the distance between the adjacent snowflake type groove structure is 3.36～3.92mm.
The present invention also provides a kind of radome, is used to be located at antenna, comprises aforesaid double frequency band-pass electromagnetic wave transparent material.
The present invention also provides a kind of antenna system, comprises antenna and aforesaid radome, and said radome covers on the antenna.
The technical scheme of embodiment of the present invention has following beneficial effect: through on substrate, adhering to the metal micro structure of given shape, obtain the electromagnetic response of needs, make the wave penetrate capability of radome strengthen, antijamming capability increases.Can be through regulating shape, the size of metal micro structure; Change relative dielectric constant, refractive index and the impedance of material; Thereby realize impedance matching with air; To increase the transmission of incident electromagnetic wave to greatest extent, reduced traditional antenna and be covered with the restriction of timing material thickness and dielectric constant.Bilateral band electromagnetic wave transparent material of the present invention and radome thereof and antenna system can be operated in two frequency ranges, in these two frequency ranges to pass through weave efficiency very high, and can shield other frequency ranges, disturb thereby get rid of, guaranteed the works fine environment of antenna.After antenna added radome, the radianting capacity of antenna had obtained reinforcement, had effectively improved gain.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the structural representation according to the bilateral band electromagnetic wave transparent material of one embodiment of the invention;
Fig. 2 is the sketch map of arranging according to first metal micro structure of one embodiment of the invention;
Fig. 3 is the sketch map according to single first metal micro structure of one embodiment of the invention;
Fig. 4 is according to second metal micro structure of one embodiment of the invention sketch map of arranging at first outer surface of substrate;
Fig. 5 is the sketch map of arranging of adjacent two second metal micro structures shown in Figure 4;
Fig. 6 is the sketch map of snowflake type groove structure shown in Figure 4;
Fig. 7 is according to the 3rd metal micro structure of one embodiment of the invention sketch map of arranging at second outer surface of substrate;
Fig. 8 is the S parameters simulation sketch map according to the bilateral band electromagnetic wave transparent material of one embodiment of the invention.
Embodiment
The present invention provides a kind of double frequency band-pass electromagnetic wave transparent material; As shown in Figure 1; Comprise first substrate 10 and second substrate 20 processed by nonmetallic materials, and be folded between first substrate 10 and second substrate 20 and be arranged into latticed a plurality of first metal micro structure 31.It is understandable that the number of the metal micro structure shown in the Figure of description is merely signal, be used to explain the situation of arranging between the metal micro structure, not as limitation of the present invention.
The material of making substrate has multiple choices; For example pottery, FR4, F4B (polytetrafluoroethylene), HDPE (high density polyethylene (HDPE), High Density Polyethylene), ABS (Acrylonitrile Butadiene Styrene), ferroelectric material or ferromagnetic material etc.First substrate 10, second substrate, 20 preferred dielectric constants are 3.4, and loss angle tangent is 0.0028 material.The planar structure that first metal micro structure 31 is processed for electric conducting material with certain geometrical pattern.The electric conducting material here; Can be electric conductivity good metal materials such as gold, silver, copper; Perhaps main component is one or both the alloy material in gold, silver, the copper, also can be the nonmetallic materials that CNT, Al-Doped ZnO, indium tin oxide etc. can conduct electricity.Among 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 first metal micro structure 31 is seen Fig. 2 and shown in Figure 3, does not have the gap between the first adjacent metal micro structure 31, and first metal micro structure 31 is a decussate texture.Decussate texture is that identical and orthogonal metal wire constitutes the length a=6.5mm of metal wire, live width b=3.1mm by two sizes.
In an embodiment of the present invention, bilateral band electromagnetic wave transparent material also comprises second metal micro structure 32 and the 3rd metal micro structure 33 that is covered in a plurality of array arrangements of second substrate, 20 outer surfaces of a plurality of array arrangements that are covered in first substrate, 10 outer surfaces.Like Fig. 4, shown in 5, 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 square paster, the length of side c=6.24mm of square patch, the spacing w1=0.52mm between the adjacent square patch.
The concrete shape of snowflake type groove structure 321 is as shown in Figure 6, and 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.Identical and in-line groove that vertically divide equally constitutes cross bath structure A by two sizes.In an embodiment of the present invention, the flute length e of in-line groove is 2.1～2.6mm, and groove width w2 is 0.24～0.27mm.The flute length d of in-line groove structure B is 1.9～2.5mm, and groove width w2 is 0.24～0.27mm.Distance between the snowflake type groove structure 321 on the two adjacent square patchs is 3.36～3.92mm.
In an embodiment of the present invention, the 3rd metal micro structure 33 that is covered in a plurality of array arrangements of second substrate, 20 outer surfaces is the square patch that offers the snowflake type groove structure also, and the 3rd metal micro structure 33 is identical with the shape and size of second metal micro structure 32.The 3rd metal micro structure 33 is seen Fig. 7 in the rule of arranging of second substrate, 20 outer surfaces.
To combine specific embodiment that the effect of bilateral band electromagnetic wave transparent material of the present invention is described below.In one embodiment, first metal micro structure 31 is a decussate texture, and identical and orthogonal metal wire constitutes the length a=6.5mm of metal wire, live width b=3.1mm by two sizes.Second, third metal micro structure 32,33 is the square patch that offers snowflake type groove structure 321, and the length of side of square patch equates, length of side c=6.24mm, the spacing w1=0.26mm between the adjacent square patch.The groove width w2=0.26mm of snowflake type groove structure 321, the flute length e=2.48mm of in-line groove, the flute length d of in-line groove structure B is 2.34mm.In an embodiment of the present invention, first substrate 10 and second substrate 20 are made by polytetrafluoroethylene (F4B).First metal micro structure 31 is made of copper with second, third metal micro structure 32,33.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 merely an instance, not as limitation of the present invention.
Perhaps interconnect through the filling liquid raw substrate between first substrate 10 and second substrate 20 through assembling.Attached on the substrate, mode such as metal micro structure 31,32,33 also can adopt platings, bores quarter certainly, ion quarter is carved perhaps in photoetching, electronics is attached on first substrate 10 or second substrate 20 through etched mode for metal micro structure 31,32,33.First substrate 10 and second substrate 20 also can adopt other materials to process, and process such as pottery, HIPS (impact resistant polystyrene, High impact polystyrene) material, ferroelectric material, ferrite material or ferromagnetic material.
Bilateral band electromagnetic wave transparent material to having above-mentioned parameter carries out emulation, and figure is as shown in Figure 8 for its S parameters simulation.Can be seen by Fig. 8, two passbands in 0～25GHz scope, occur, and S21 is very high in each passband, the ripple effect is fine thoroughly.And very little in other frequency range S21 parameter, and reflection coefficient is very big, has filter action.When practical application, through shape, the size of regulating first, second, third metal micro structure, can change relative dielectric constant, refractive index and the impedance of material, thereby two passbands move to high frequency or low frequency, perhaps change bandwidth.
The double frequency band-pass electromagnetic wave transparent material also can adopt multilager base plate, such as comprising 3 laminar substrates, is equipped with above-mentioned metal micro structure of arranging between adjacent substrate.Can reach the effect of bilateral band equally.This performance can be used in the electromagnetic application scenario that specific (special) requirements is arranged with resistance that leads to.
Therefore, the present invention also provides a kind of radome, and this radome bilateral band electromagnetic wave transparent material is by mentioned earlier processed; Be used to cover at antenna, when antenna is played a protective role, can also guarantee that antenna is in the working frequency range operate as normal; Mask uncorrelated frequency range, get rid of and disturb.
Need to prove; The shape of radome can for accompanying drawing in the identical tabular of bilateral band electromagnetic wave transparent material shape; Also can come the shape of designing antenna cover according to the actual requirements; Such as being designed to spherical shape or with the shape (conformal radome) of antenna pattern coupling etc., not getting rid of yet and use a plurality of plate-like structures to be spliced into the shape of needs, the present invention does not limit this.
The present invention also provides a kind of antenna system, comprises antenna, and radome as indicated above, and radome covers on the antenna.Antenna comprises radiation source, feed element etc., and concrete formation can be consulted the correlation technique data, and the present invention does not limit this.Antenna body can be such as but not limited to plate aerial, microwave antenna, radar antenna etc.
Bilateral band electromagnetic wave transparent material of the present invention and radome thereof and antenna system can be operated in two frequency ranges, in these two frequency ranges to pass through weave efficiency very high, and can shield other frequency ranges, disturb thereby get rid of, guaranteed the works fine environment of antenna.After antenna added radome, the radianting capacity of antenna had obtained reinforcement, had effectively improved gain.
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. bilateral band electromagnetic wave transparent material; It is characterized in that; Comprise first substrate and second substrate processed by nonmetallic materials; And be folded between first substrate and second substrate and be arranged into latticed a plurality of first metal micro structure, do not have the gap between the first adjacent metal micro structure, and said first metal micro structure is a decussate texture.
2. bilateral band electromagnetic wave transparent material according to claim 1; It is characterized in that said bilateral band electromagnetic wave transparent material also comprises second metal micro structure and the 3rd metal micro structure that is covered in a plurality of array arrangements of said second outer surface of substrate of a plurality of array arrangements that are covered in said first outer surface of substrate.
3. bilateral band electromagnetic wave transparent material according to claim 2 is characterized in that said second metal micro structure is the square patch that offers the snowflake type groove structure.
4. bilateral band electromagnetic wave transparent material according to claim 3 is characterized in that said the 3rd metal micro structure is the square patch that offers the snowflake type groove structure.
5. according to claim 3 or 4 described bilateral band electromagnetic wave transparent materials, it is characterized in that said snowflake type groove structure comprises the cross bath structure and is separately positioned on four in-line groove structures on four end points of said cross bath structure.
6. bilateral band electromagnetic wave transparent material according to claim 5 is characterized in that, identical and in-line groove that vertically divide equally constitutes said cross bath structure by two sizes; The flute length of said in-line groove is 2.1～2.6mm, and groove width is 0.24～0.27mm.
7. bilateral band electromagnetic wave transparent material according to claim 5 is characterized in that the flute length of said in-line groove structure is 1.9～2.5mm, and groove width is 0.24～0.27mm.
8. bilateral band electromagnetic wave transparent material according to claim 3 is characterized in that the distance between the adjacent snowflake type groove structure is 3.36～3.92mm.
9. a radome is characterized in that, is used to be located at antenna, comprises like each described bilateral band electromagnetic wave transparent material of claim 1～8.
10. an antenna system is characterized in that, comprises antenna and radome as claimed in claim 9, and said radome covers on the antenna.
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| CN201210222057.7A CN102769160B (en) | 2012-06-29 | 2012-06-29 | Dual-passband electromagnetic wave transparent material and radome thereof and antenna system |
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| CN201210222057.7A CN102769160B (en) | 2012-06-29 | 2012-06-29 | Dual-passband electromagnetic wave transparent material and radome thereof and antenna system |
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| CN102769160A true CN102769160A (en) | 2012-11-07 |
| CN102769160B CN102769160B (en) | 2016-04-06 |
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Cited By (6)
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|---|---|---|---|---|
| CN102931482A (en) * | 2012-11-09 | 2013-02-13 | 北京大学 | Symmetrical multilayer dual-band antenna housing structure and production method |
| CN103401048A (en) * | 2013-08-07 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | Mixed unit frequency selecting surface |
| 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 |
| 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 |
| CN107613187A (en) * | 2017-11-10 | 2018-01-19 | 彭从文 | Anti-interference security monitoring device |
| CN107834194A (en) * | 2017-10-18 | 2018-03-23 | 西安天和防务技术股份有限公司 | Filter antenna cover |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931482A (en) * | 2012-11-09 | 2013-02-13 | 北京大学 | Symmetrical multilayer dual-band antenna housing structure and production method |
| CN103401048A (en) * | 2013-08-07 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | Mixed unit frequency selecting surface |
| 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 |
| 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 |
| 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 |
| CN107834194A (en) * | 2017-10-18 | 2018-03-23 | 西安天和防务技术股份有限公司 | Filter antenna cover |
| 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 |
| CN107613187A (en) * | 2017-11-10 | 2018-01-19 | 彭从文 | Anti-interference security monitoring device |
| 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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| CN102769160B (en) | 2016-04-06 |
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