CN102769201A - Double-frequency band-pass wave-transparent material, radome made of double-frequency band-pass wave-transparent material and antenna system - Google Patents
Double-frequency band-pass wave-transparent material, radome made of double-frequency band-pass wave-transparent material and antenna system Download PDFInfo
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- CN102769201A CN102769201A CN201210222196XA CN201210222196A CN102769201A CN 102769201 A CN102769201 A CN 102769201A CN 201210222196X A CN201210222196X A CN 201210222196XA CN 201210222196 A CN201210222196 A CN 201210222196A CN 102769201 A CN102769201 A CN 102769201A
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Abstract
The invention relates to a double-frequency band-pass wave-transparent material, a radome made of the double-frequency band-pass wave-transparent material and an antenna system. The double-frequency band-pass wave-transparent material comprises a first substrate which is made of a nonmetallic material, and a plurality of artificial microstructures which are attached on the first substrate and are arranged in an array. Each artificial microstructure comprises a cross-shaped structure which is obliquely arranged at a preset angle, and in-line structures which are perpendicularly intersected with four branches of the cross-shaped structure. The double-frequency band-pass wave-transparent material, he radome made of the double-frequency band-pass wave-transparent material and the antenna system provided by the invention can work within two frequency bands, the wave-transparent efficiency within the two frequency bands is very high, other frequency bands can be shielded to eliminate interference and the working environment of an antenna is guaranteed to be good; and after the antenna is provided with the radome, the radiation capability of the antenna is improved and the gain is effectively improved.
Description
Technical field
The present invention relates to radome, more particularly, relate to double frequency band-pass 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 a kind of double frequency band-pass electromagnetic wave transparent material and radome and antenna system are provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of double frequency band-pass electromagnetic wave transparent material; Comprise first substrate that at least one is processed by nonmetallic materials and attached on first substrate and a plurality of artificial micro-structural of array arrangement, said artificial micro-structural comprises the decussate texture of inclination predetermined angle and the in-line structure that intersects vertically with four branches of said decussate texture respectively.
In double frequency band-pass electromagnetic wave transparent material of the present invention, said predetermined angle is 30 ~ 60 degree.
In double frequency band-pass electromagnetic wave transparent material of the present invention, said in-line structure is positioned at the center of respective branches.
In double frequency band-pass electromagnetic wave transparent material of the present invention, identical and wire that vertically divide equally constitutes said decussate texture by two sizes.
In double frequency band-pass electromagnetic wave transparent material of the present invention, the length wiry of said decussate texture is 12 ~ 16mm, and width is 0.2mm.
In double frequency band-pass electromagnetic wave transparent material of the present invention, said in-line structure is made up of wire, and length wiry is 3 ~ 6mm, and width is 0.2mm.
In double frequency band-pass electromagnetic wave transparent material of the present invention, said double frequency band-pass electromagnetic wave transparent material also comprises second substrate, and said artificial micro-structural is folded between first substrate and second substrate.
In double frequency band-pass electromagnetic wave transparent material of the present invention, the thickness of said first substrate is 2mm, and the thickness of said artificial micro-structural is 0.018mm.
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 artificial micro-structural 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 artificial micro-structural; 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.Double frequency band-pass 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 double frequency band-pass electromagnetic wave transparent material of one embodiment of the invention;
Fig. 2 is the sketch map of arranging according to the artificial micro-structural of one embodiment of the invention;
Fig. 3 is the sketch map according to the single artificial micro-structural of one embodiment of the invention;
Fig. 4 is the S21 parameters simulation sketch map according to the double frequency band-pass 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, comprise first substrate that at least one is processed by nonmetallic materials and attached on first substrate and a plurality of artificial micro-structural of array arrangement.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.
As shown in Figure 1; Double frequency band-pass electromagnetic wave transparent material in the present embodiment comprises two-layer substrate; First substrate 10 and second substrate 20 promptly processed by nonmetallic materials, and be located between first substrate 10 and second substrate 20 and a plurality of artificial micro-structural 30 of array arrangement.It is 2.2 ~ 4.3 that first substrate 10 and second substrate 20 are preferentially chosen dielectric constant, and loss angle tangent is less than 0.005 material.
The planar structure that the silk thread that artificial micro-structural 30 is processed for electric conducting material is formed 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 concrete geometry pattern of artificial micro-structural 30 is seen Fig. 2 and Fig. 3, and artificial micro-structural 30 comprises the decussate texture 31 of inclination predetermined angle and the in-line structure 32 that intersects vertically with four branches of decussate texture 31 respectively.Identical and wire that vertically divide equally constitutes decussate texture 31 by two sizes.In-line structure 32 is made up of a wire.The number of illustrated artificial micro-structural is merely signal, only is used to explain the situation of arranging between the artificial micro-structural, not as limitation of the present invention.The predetermined angle here can be selected in 30 ~ 60 degree scopes, preferred 30 degree, 45 degree, 60 degree.It is 45 degree that the predetermined angle that tilts has been shown among the figure.
In-line structure 32 intersects vertically with decussate texture 31, and in the preferred embodiment of the present invention, each in-line structure 32 is positioned at the center of its corresponding cross shape branch, and is as shown in Figure 3.The length wiry of decussate texture 31 is 12 ~ 16mm, width w1=0.2mm.In-line structure 32 is made up of wire, and length wiry is 3 ~ 6mm, width w2=0.2mm.Spacing between the adjacent artificial micro-structural 30 is 0.1 ~ 0.6mm.
To combine specific embodiment that the effect of double frequency band-pass electromagnetic wave transparent material of the present invention is described below.In one embodiment, the spacing between the adjacent artificial micro-structural 30 is 0.4mm, the length L 1=14mm wiry of decussate texture 31, width w1=0.2mm.The length L 2=5mm wiry of in-line structure 32, width w2=0.2mm.Wire is spun gold, filamentary silver or copper wire, perhaps for containing the alloy silk of gold, silver or copper.The thickness of first substrate 10 and second substrate 20 is 2mm, and the thickness of artificial micro-structural 30 is 0.018mm.In an embodiment of the present invention, first substrate 10 and second substrate 20 are made by polytetrafluoroethylene (F4B).
Perhaps interconnect through the filling liquid raw substrate between first substrate 10 and second substrate 20 through assembling.Attached on first substrate 10, certain artificial micro-structural 30 also can adopt plating, bores quarter artificial micro-structural 30 through etched mode, photoetching, electronics is carved or ion quarter etc. mode attached on first substrate 10 or second substrate 20.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.Artificial micro-structural 30 adopts copper cash to process, and can certainly adopt electric conducting materials such as silver-colored line, ITO, graphite or CNT to process.
Double frequency band-pass electromagnetic wave transparent material to having above-mentioned parameter carries out emulation, and figure is as shown in Figure 4 for its S21 parameters simulation.Can see that by Fig. 4 when frequency was 7.4351GHz (frequency 1), 10.564GHz (frequency 2), 15.11GHz (frequency 3), the S21 parameter was-1dB.The double frequency band-pass electromagnetic wave transparent material has the high wave property of passing through in 7.4 ~ 10.5GHz frequency band and 15.1 ~ 20GHz frequency band, the S21 parameter is all greater than-1dB, and in other frequency range filter action is arranged.When practical application, through shape, the size of regulating artificial micro-structural, 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, satisfy the different frequency bands demand.
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 artificial micro-structural of arranging between adjacent substrate.Can reach the effect of double frequency band-pass 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 double frequency band-pass 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 double frequency band-pass 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.
The technical scheme of embodiment of the present invention has following beneficial effect: through on substrate, adhering to the artificial micro-structural 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 artificial micro-structural; 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.Double frequency band-pass 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. double frequency band-pass electromagnetic wave transparent material; It is characterized in that; Comprise first substrate that at least one is processed by nonmetallic materials and attached on first substrate and a plurality of artificial micro-structural of array arrangement, said artificial micro-structural comprises the decussate texture of inclination predetermined angle and the in-line structure that intersects vertically with four branches of said decussate texture respectively.
2. double frequency band-pass electromagnetic wave transparent material according to claim 1 is characterized in that, said predetermined angle is 30 ~ 60 degree.
3. double frequency band-pass electromagnetic wave transparent material according to claim 1 and 2 is characterized in that said in-line structure is positioned at the center of respective branches.
4. double frequency band-pass electromagnetic wave transparent material according to claim 3 is characterized in that, identical and wire that vertically divide equally constitutes said decussate texture by two sizes.
5. double frequency band-pass electromagnetic wave transparent material according to claim 4 is characterized in that, the length wiry of said decussate texture is 12 ~ 16mm, and width is 0.2mm.
6. double frequency band-pass electromagnetic wave transparent material according to claim 4 is characterized in that, said in-line structure is made up of wire, and length wiry is 3 ~ 6mm, and width is 0.2mm.
7. double frequency band-pass electromagnetic wave transparent material according to claim 1 is characterized in that, said double frequency band-pass electromagnetic wave transparent material also comprises second substrate, and said artificial micro-structural is folded between first substrate and second substrate.
8. double frequency band-pass electromagnetic wave transparent material according to claim 1 is characterized in that, the thickness of said first substrate is 2mm, and the thickness of said artificial micro-structural is 0.018mm.
9. a radome is characterized in that, is used to be located at antenna, comprises like each described double frequency band-pass 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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| CN201210222196.XA CN102769201B (en) | 2012-06-29 | 2012-06-29 | Double frequency band-pass electromagnetic wave transparent material and antenna house thereof and antenna system |
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| CN107394411A (en) * | 2017-07-20 | 2017-11-24 | 中国人民解放军空军工程大学 | C/X waveband double-frequencies lens antenna designs |
| CN110137685A (en) * | 2019-03-28 | 2019-08-16 | 西安电子科技大学 | A kind of frequency-selective surfaces structure and its cellular construction applied to 5G communication |
| CN113612032A (en) * | 2021-07-23 | 2021-11-05 | 北京高信达通信科技股份有限公司 | Artificial dielectric complex, artificial dielectric lens and manufacturing method |
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| CN110137685A (en) * | 2019-03-28 | 2019-08-16 | 西安电子科技大学 | A kind of frequency-selective surfaces structure and its cellular construction applied to 5G communication |
| CN110137685B (en) * | 2019-03-28 | 2020-11-10 | 西安电子科技大学 | Frequency selection surface structure applied to 5G communication and unit structure thereof |
| CN113612032A (en) * | 2021-07-23 | 2021-11-05 | 北京高信达通信科技股份有限公司 | Artificial dielectric complex, artificial dielectric lens and manufacturing method |
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| CN102769201B (en) | 2016-06-22 |
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Effective date of registration: 20210714 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. |