CN102760963A - Broadband wave-transmitting meta-material and antenna cover and antenna system with material - Google Patents
Broadband wave-transmitting meta-material and antenna cover and antenna system with material Download PDFInfo
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- CN102760963A CN102760963A CN2012102262175A CN201210226217A CN102760963A CN 102760963 A CN102760963 A CN 102760963A CN 2012102262175 A CN2012102262175 A CN 2012102262175A CN 201210226217 A CN201210226217 A CN 201210226217A CN 102760963 A CN102760963 A CN 102760963A
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Abstract
The invention relates to a broadband wave-transmitting meta-material and an antenna cover and an antenna system with the material. The working frequency range of the broadband wave-transmitting meta-material is 7-18 GHz. The broadband wave-transmitting meta-material comprises at least one meta-material sheet layer, and each meta-material sheet layer comprises a first substrate, a second substrate and a plurality of artificial micro-structures with the same size, wherein the artificial micro-structures are arranged between the first substrate and the second substrate and are arranged in an array manner; the thicknesses of the first and second substrates are different; the artificial micro-structures are in cross-shaped structures; a plurality of cross-shaped structures are arranged in an array manner to form a grid shape, and no gap is reserved between each two adjacent cross-shaped structures; and the meta-material sheet layer can be divided into a plurality of meta-material units, and each meta-material unit is provided with one cross-shaped micro-structure. The broadband wave-transmitting meta-material and the antenna cover and the antenna system with the material disclosed by the invention can work in the frequency range of 7-18 GHz, and the wave-transmitting efficiency in the frequency range is very high.
Description
Technical field
The present invention relates to electromagnetic wave transparent material, more particularly, relate to wideband and pass through the ultra material of ripple and radome and antenna system.
Background technology
Ultra material is commonly called as ultra material, is a kind of novel artificial synthetic material, is the substrate processed by nonmetallic materials and attached on the substrate surface or be embedded in the inner a plurality of artificial micro-structural of substrate and constitute.Substrate can be divided into a plurality of base board units that rectangular array is arranged virtually; Be attached with artificial micro-structural on each base board unit; Thereby form a ultra material cell; Whole ultra material is made up of a lot of so ultra material cell, just as crystal is to be made up of according to certain arranging countless lattices.Artificial micro-structural on each ultra material cell can be identical or incomplete same.Artificial micro-structural has certain geometric plane or a stereochemical structure by what wire was formed, for example forms annular, I-shaped wire etc.
Because the existence of artificial micro-structural, each ultra material cell has the electromagnetic property that is different from substrate itself, so the ultra material that all ultra material cell constitute demonstrates special response characteristic to electric field and magnetic field; Through concrete structure and the shape different, can change the response characteristic of whole ultra material to artificial microstructure design.
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, under different frequency range demands, 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, to the defective that above-mentioned wave penetrate capability is relatively poor, working frequency range is narrower of prior art, provides a kind of wideband to pass through the ultra material of ripple and radome and antenna system.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of wideband to pass through the ultra material of ripple; The working frequency range that said wideband passes through the ultra material of ripple is 7-18GHz; Comprise at least one ultra sheet of material, each ultra sheet of material comprise first substrate, second substrate and be located in first substrate and second substrate between and a plurality of measure-alike artificial micro-structural of array arrangement; Said first substrate is different with the thickness of second substrate; Said artificial micro-structural is a decussate texture, and a plurality of decussate texture array arrangements become between the latticed and adjacent decussate texture does not have the gap;
Said ultra sheet of material can be divided into a plurality of ultra material cell, and wherein each ultra material cell is placed with a said cross micro-structural.
Pass through in the ultra material of ripple at wideband of the present invention, the dielectric constant of said first substrate and second substrate is 2.2 ~ 2.4.
Pass through in the ultra material of ripple at wideband of the present invention, the loss angle tangent of said first substrate and second substrate is less than 0.005.
Pass through in the ultra material of ripple at wideband of the present invention, identical and wire that vertically divide equally constitutes said decussate texture by two sizes.
Pass through in the ultra material of ripple at wideband of the present invention, the length of side of each ultra material cell is 8.5 ~ 9.5mm, and said length wiry equates with the length of side of ultra material cell.
Pass through in the ultra material of ripple at wideband of the present invention, said live width wiry is 0.1mm.
Pass through in the ultra material of ripple at wideband of the present invention, said first substrate and second substrate are processed by the HIPS material.
Pass through in the ultra material of ripple at wideband of the present invention, the thickness of said artificial micro-structural is 0.018mm.
Pass through in the ultra material of ripple at wideband of the present invention, the thickness of said first substrate is 1.2mm, and the thickness of said second substrate is 2.4mm.
The present invention also provides a kind of radome, is used to be located at antenna, comprises that aforesaid wideband passes through the ultra material of ripple.
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 that needs, make that the wave penetrate capability based on the radome of ultra material strengthens the antijamming capability increase.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.After antenna added radome, the radianting capacity of antenna had obtained reinforcement, had effectively improved gain.Wideband of the present invention passes through the ultra material of ripple and radome is operated in the 7-18GHz frequency band, in this frequency band to pass through weave efficiency very high.
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 that passes through a ultra sheet of material of the ultra material of ripple according to the wideband of one embodiment of the invention;
Fig. 2 piles up the structural representation that the wideband that forms passes through the ultra material of ripple by a plurality of ultra sheet of material shown in Figure 1;
Fig. 3 is the structural representation according to the ultra sheet of material of one embodiment of the invention;
Fig. 4 is the sketch map of arranging according to the artificial micro-structural of one embodiment of the invention;
Fig. 5 is the sketch map according to the artificial micro-structural of one embodiment of the invention;
Fig. 6 is the S parameter sketch map that passes through the ultra material of ripple according to the wideband of one embodiment of the invention;
Fig. 7 is the S parameter comparison sketch map of radome of the present invention and pure material radome.
Embodiment
Ultra material is a kind of artificial composite structure material with the not available extraordinary physical property of natural material, through the orderly arrangement to micro-structural, can change in the space relative dielectric constant and magnetic permeability at every.Ultra material can be realized refractive index, impedance and the wave penetrate capability that common material can't possess within the specific limits, thereby can effectively control the electromagnetic wave propagation characteristic.Wideband based on artificial micro-structural passes through shape, the size that the ultra material of ripple can pass through to regulate artificial micro-structural; Change relative dielectric constant, refractive index and the impedance of material; Thereby the impedance matching of realization and air is to increase the transmission of incident electromagnetic wave to greatest extent.And can carry out the frequency selection through regulating microstructure size, adjust corresponding ripple and frequency filtering as required.
The invention provides a kind of wideband and pass through the ultra material of ripple, wideband passes through the ultra material of ripple and comprises at least one ultra sheet of material 1, and is as depicted in figs. 1 and 2.Each ultra sheet of material 1 comprises two substrates that are oppositely arranged and attached to the artificial micro-structural of the array arrangement between the two substrates.When ultra sheet of material 1 has when a plurality of, each ultra sheet of material 1 is along the direction stack perpendicular to lamella, and is assembled into one through mechanical connection, welding or bonding mode, and is as shown in Figure 2.Usually, under the situation that can satisfy performance, ultra sheet of material just can be used as wideband and passes through the ultra material of ripple and use.The plane, artificial micro-structural place of array arrangement is parallel with magnetic direction with electromagnetic electric field, and is vertical with the incident electromagnetic wave direction of propagation.It is tabular rectangle that wideband shown in the figure passes through the ultra material of ripple, when reality is used, can become other shape according to Demand Design.For example if the horn antenna of circular cross-section, then for radome is covered on the horn antenna, what need be designed to then that circular cross-section with antenna is complementary is discoideus, rather than rectangular shape shown in Figure 1; If what use is the horn antenna of square-section, the rectangular shape that then need the rectangle bore of radome design one-tenth and antenna be complementary.Concrete shape when the present invention passes through the ultra material of ripple and is used as radome wideband does not limit.
Fig. 3 shows the structural representation (perspective view) of ultra sheet of material.Ultra sheet of material 1 comprise first substrate 10, second substrate 20 and be located in first substrate 10 and second substrate 20 between and a plurality of measure-alike artificial micro-structural 30 of array arrangement.Artificial micro-structural 30 is a decussate texture, and first substrate 10 is different with the thickness of second substrate 20.A plurality of decussate texture array arrangements become between the latticed and adjacent decussate texture does not have the gap.
Ultra sheet of material 1 can be divided into a plurality of ultra material cell, wherein is placed with a cross micro-structural on each ultra material cell.In an embodiment of the present invention, be that example describes with two substrates, but when actual design, also can only adopt first substrate 10, and artificial micro structure array be arranged on first substrate 10, can reach the object of the invention equally.
Shown in Fig. 4-5, the length of side of each ultra material cell equates that a span is 8.5 ~ 9.5mm, preferred 9.2mm.Artificial micro-structural 30 is close to the border of ultra material cell.Artificial micro-structural 30 is a decussate texture, and identical and wire that vertically divide equally constitutes decussate texture by two sizes.The live width w=0.1mm wiry of decussate texture, length wiry equates with the length of side of ultra material cell.The thickness of first substrate 10 is 1.2mm, and the thickness of second substrate 20 is 2.4mm, and the thickness of artificial micro-structural 30 is 0.018mm.The numerical value here is merely example, in practical application, can adjust according to actual demand, and the present invention does not limit this.
First substrate and second substrate choose that dielectric constant is 2.2 ~ 2.4, loss angle tangent is less than 0.005 dielectric material.In an embodiment of the present invention, first substrate 10 and second substrate 20 are made by HIPS (impact resistant polystyrene, High impact polystyrene) material.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, polytetrafluoroethylene, 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.The wideband of illustrating in the accompanying drawing passes through the tabular that is shaped as of the ultra material of ripple; When actual design, 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 mating with antenna pattern when the radome etc.; Do not get 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.
It is as shown in Figure 6 with the sketch map of frequency change that the wideband of present embodiment passes through the S parameter of the ultra material of ripple, and used first substrate 10 and second substrate 20 are processed by the HIPS material.Can be seen that by Fig. 6 technical scheme of the present invention is after adhering to artificial micro-structural on the substrate, the S21 parameter is-0.45925dB when 7GHz, and when 18GHz, the S21 parameter is-0.48698dB.Can know that from figure the S21 parameter is all greater than-0.5dB in 7 ~ 18GHz scope, and reflection coefficient is very little, less than-10dB.Adopt radome of the present invention to have good wave penetrate capability.
The present invention also provides a kind of radome, is used to be located at antenna, comprises that aforesaid wideband passes through the ultra material of ripple.
Fig. 7 is the S parameter comparison sketch map of radome of the present invention and pure material radome.S11, S21 represent that respectively wideband of the present invention passes through the reflection coefficient and the transmission coefficient of the ultra material of ripple; S11_1, S21_1 represent reflection coefficient and the transmission coefficient of pure material radome (not adding artificial micro-structural of the present invention, only two-layer substrate) respectively.Can be known that by Fig. 7 in 7.262GHz ~ 18GHz scope, the reflection coefficient S11 that wideband of the present invention passes through the ultra material of ripple all is lower than the reflection coefficient S11_1 of pure material radome, transmission coefficient S21 all is higher than the transmission coefficient S21_1 of pure material radome.
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.Microwave antenna can be such as but not limited to horn antenna etc.
The present invention is through adhering to the artificial micro-structural of given shape on substrate, obtain the electromagnetic response that needs, makes that the wave penetrate capability based on the radome of ultra material strengthens the antijamming capability increase.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.And wideband of the present invention pass through the ultra material of ripple and radome in the 7-18GHz scope to pass through weave efficiency very high.After antenna added radome, the radianting capacity of antenna had obtained reinforcement, had effectively improved gain, and radiation directivity strengthens.
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. a wideband passes through the ultra material of ripple; It is characterized in that; The working frequency range that affiliated wideband passes through the ultra material of ripple is 7-18GHz; Comprise at least one ultra sheet of material, each ultra sheet of material comprise first substrate, second substrate and be located in first substrate and second substrate between and a plurality of measure-alike artificial micro-structural of array arrangement; Said first substrate is different with the thickness of second substrate; Said artificial micro-structural is a decussate texture, and a plurality of decussate texture array arrangements become between the latticed and adjacent decussate texture does not have the gap;
Said ultra sheet of material can be divided into a plurality of ultra material cell, and wherein each ultra material cell is placed with a said cross micro-structural.
2. wideband according to claim 1 passes through the ultra material of ripple, it is characterized in that, the dielectric constant of said first substrate and second substrate is 2.2 ~ 2.4.
3. wideband according to claim 2 passes through the ultra material of ripple, it is characterized in that, the loss angle tangent of said first substrate and second substrate is less than 0.005.
4. wideband according to claim 1 passes through the ultra material of ripple, it is characterized in that, identical and wire that vertically divide equally constitutes said decussate texture by two sizes.
5. wideband according to claim 4 passes through the ultra material of ripple, it is characterized in that, the length of side of each ultra material cell is 8.5 ~ 9.5mm, and said length wiry equates with the length of side of ultra material cell.
6. wideband according to claim 4 passes through the ultra material of ripple, it is characterized in that, said live width wiry is 0.1mm.
7. wideband according to claim 1 passes through the ultra material of ripple, it is characterized in that, said first substrate and second substrate are processed by the HIPS material.
8. wideband according to claim 1 passes through the ultra material of ripple, it is characterized in that, the thickness of said first substrate is 1.2mm, and the thickness of said second substrate is 2.4mm.
9. a radome is characterized in that, is used to be located at antenna, comprises like each described wideband of claim 1 ~ 8 passing through the ultra material of ripple.
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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| CN201210226217.5A CN102760963B (en) | 2012-07-03 | 2012-07-03 | Broadband wave-transmitting meta-material and antenna cover and antenna system with material |
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| CN105576344A (en) * | 2014-10-29 | 2016-05-11 | 三星电子株式会社 | Antenna device and electronic device having the same |
| CN106099359A (en) * | 2016-05-17 | 2016-11-09 | 深圳市天鼎微波科技有限公司 | A kind of close coupling array antenna being applied to 5G communication system |
| CN112310633A (en) * | 2019-07-30 | 2021-02-02 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN113555693A (en) * | 2021-07-09 | 2021-10-26 | 南京大学 | Antireflection film, electromagnetic wave transmission structure and preparation method of antireflection film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105576344A (en) * | 2014-10-29 | 2016-05-11 | 三星电子株式会社 | Antenna device and electronic device having the same |
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| CN112310633A (en) * | 2019-07-30 | 2021-02-02 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
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| CN112310633B (en) * | 2019-07-30 | 2022-02-01 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN113555693A (en) * | 2021-07-09 | 2021-10-26 | 南京大学 | Antireflection film, electromagnetic wave transmission structure and preparation method of antireflection film |
| CN113555693B (en) * | 2021-07-09 | 2022-05-20 | 南京大学 | Antireflection film, electromagnetic wave transmission structure and preparation method of antireflection film |
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Effective date of registration: 20151120 Address after: 518057 Guangdong City, Nanshan District province high tech Zone in the middle of a high tech building, building No. 2, No. 9, building Patentee after: Shenzhen Guangqi Innovative Technology Co., Ltd. Address before: 518034 A international business center, No. 1061, Xiang Mei Road, Guangdong, Shenzhen, Futian District, China 18B Patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |