CN102683846A - Metamaterial antenna cover and antenna system - Google Patents
Metamaterial antenna cover and antenna system Download PDFInfo
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- CN102683846A CN102683846A CN2012101327543A CN201210132754A CN102683846A CN 102683846 A CN102683846 A CN 102683846A CN 2012101327543 A CN2012101327543 A CN 2012101327543A CN 201210132754 A CN201210132754 A CN 201210132754A CN 102683846 A CN102683846 A CN 102683846A
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Abstract
The invention relates to a metamaterial antenna cover. The metamaterial antenna cover comprises a metamaterial layer and two protection layers which respectively cover two opposite surfaces of the metamaterial layer, wherein the metamaterial layer comprises a medium substrate and a plurality of metal microstructures which are distributed on the surface of the medium substrate in an array mode and covered by the corresponding protection layers; each metal microstructure comprises two branches which are orthogonal to each other; each branch comprises a first metal segment, a second metal segment and a third metal segment; the first metal segment and the second segment are parallel to each other and equal in length; the third metal segment is positioned between the first metal segment and the second segment and perpendicularly connected with the first metal segment and the second segment; two ends of the third metal segment are respectively connected to the middle points of the first metal segment and the second segment; the third metal segments of the two branches are perpendicularly intersected with each other in the middle points of the third metal segments; and the thickness of the first protection layer is unequal to that of the second protection layer. The invention also provides an antenna system.
Description
Technical field
The present invention relates to radome and antenna system, more particularly, relate to a kind of radome and antenna system of processing by the ultra material of brand-new design.
Background technology
In antenna system, usually need come the cover cap antenna with radome, so that antenna is avoided the influence of extraneous adverse circumstances, like this, electromagnetic wave all need pass radome during the antenna receiving-sending electromagnetic wave.Although dielectric constants and loss angle tangent is low, mechanical strength the is high materials of adopting when making radome at present more; Like fiberglass, epoxy resin and high molecular polymers such as ABS and UPVC; But can't be consistent with the wave impedance coupling of air, electromagnetic wave not only can reflect when between air and radome, propagating, and radome is also bigger to electromagnetic loss; Thereby reduced the radiation efficiency and the gain of antenna, had a strong impact on the electromagnetic performance of antenna.In addition; Present existing radome is structurally mostly to be uniform single walled structure, sandwich and spatial skeleton structure etc.; Under the situation that satisfies the mechanical performance requirement, the cover wall of radome is thicker, and cone wall thickness is relevant with the working frequency range of radome; Like this, just, can't take into account the mechanical performance and high requirement of passing through the ripple rate of radome.
Ultra material is a kind of artificial composite structure material with the not available extraordinary physical property of natural material.Current, people periodically arrange the metal micro structure with certain geometrical shape and form ultra material on medium substrate.Because the dielectric constant and/or the magnetic permeability that can utilize the geometry and the size of metal micro structure and arrange and change ultra material space each point; Make it produce the electromagnetic response of expection; With the control electromagnetic wave propagation; So, be with a wide range of applications in a plurality of fields, become one of hot fields that the various countries scientific research personnel falls over each other to study.Making aspect the radome as electromagnetic wave transparent material with ultra material, it has been found that to have good wave penetrate capability with the radome of its making, also less to electromagnetic loss.
Summary of the invention
The technical problem that the present invention will solve is, a kind of ultra material radome and antenna system with good wave penetrate capability is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of ultra material radome; It comprises ultra material layer and is covered in two apparent surfaces' of said ultra material layer first protective layer, second protective layer respectively; Said ultra material layer comprises medium substrate and is arranged in the surface of said medium substrate in array and a plurality of metal micro structures of being covered by the corresponding protection layer; Each metal micro structure comprises two mutually orthogonal branches; Each branch comprise be parallel to each other and first metal wire sections of equal in length and second metal wire sections and between said first metal wire sections and second metal wire sections and with vertical the 3rd metal wire sections that links to each other of said first metal wire sections and second metal wire sections; The two ends of said the 3rd metal wire sections are connected to the mid point of said first metal wire sections and second metal wire sections; The 3rd metal wire sections of said two branches is vertically intersected on mid point each other, and the thickness of the thickness of said first protective layer and said second protective layer is unequal.
Preferably, said a plurality of metal micro structure is between said medium substrate and said first protective layer.
Preferably, the thickness of said first protective layer is two times of thickness of said second protective layer.
Preferably, the thickness of said first protective layer equals the gross thickness of the said medium substrate and second protective layer.
Preferably, the spacing at the center of wantonly two hithermost metal micro structures is 8.97～9.05mm.
Preferably, the length of arbitrary branch of each metal micro structure equals 8.86～8.92mm.
Preferably, the width of first metal wire sections of arbitrary branch of each metal micro structure, second metal wire sections and the 3rd metal wire sections equates that the thickness of first metal wire sections, second metal wire sections and the 3rd metal wire sections equates.
Preferably; First metal wire sections of arbitrary branch of each metal micro structure and the length of second metal wire sections are equal to 5～7mm, and the thickness that the width of first metal wire sections, second metal wire sections and the 3rd metal wire sections is equal to 0.08～0.13mm, first metal wire sections, second metal wire sections and the 3rd metal wire sections is equal to 0.017～0.019mm.
Preferably, the thickness of said first protective layer is 2～2.05mm, and the thickness of said second protective layer is 1～1.03mm.
Preferably, the thickness of said medium substrate is 1～1.02mm.
Preferably, the take up an official post spacing at center of two hithermost metal micro structures of said medium substrate equals 9mm; The length of two branches of each metal micro structure is equal to 8.9mm; The length of said first metal wire sections and second metal wire sections is equal to 5mm, and the width of said first metal wire sections, second metal wire sections and the 3rd metal wire sections is equal to 0.1mm, thickness is equal to 0.018mm; The thickness of said first protective layer equals 2mm, and the thickness of said second protective layer equals 1mm; The thickness of said medium substrate is 1mm.
Preferably, said medium substrate is the glass-epoxy laminated sheet, and said first protective layer and second protective layer are processed by high impact polystyrene.
A kind of antenna system; Comprise antenna be arranged at that said antenna receives and/or the electromagnetic wave propagation direction of emission on ultra material radome; Said ultra material radome comprises two apparent surfaces' that surpass material layer and be covered in said ultra material layer respectively first protective layer, second protective layer; Said ultra material layer comprises a medium substrate and is arranged in said medium substrate in array and a plurality of metal micro structures of being covered by said first protective layer; Each metal micro structure comprises two mutually orthogonal branches; Each branch comprise be parallel to each other and first metal wire sections of equal in length and second metal wire sections and between said first metal wire sections and second metal wire sections and with vertical the 3rd metal wire sections that links to each other of said first metal wire sections and second metal wire sections; The two ends of said the 3rd metal wire sections are connected to the mid point of said first metal wire sections and second metal wire sections; The 3rd metal wire sections of said two branches is vertically intersected on mid point each other, and the thickness of the thickness of said first protective layer and said second protective layer is unequal.
Ultra material radome of the present invention and antenna system have following beneficial effect: owing to have a plurality of metal micro structures of given shape, therefore said ultra material radome and antenna system is low to electromagnetic reflection, transmission is high has good wave penetrate capability.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below.
Fig. 1 is a structural representation of the ultra material radome of the present invention;
Fig. 2 is a floor map of ultra material layer in the ultra material radome of the present invention;
Fig. 3 is the floor map of a ultra material cell of the ultra material radome of the present invention;
Fig. 4 is that reflection coefficient S1 and the transmission coefficient S2 of a sample of the ultra material radome of the present invention is with the curve chart of electromagnetic frequency change;
Fig. 5 is that the standing-wave ratio of a sample of the ultra material radome of the present invention is with the curve chart of electromagnetic frequency change;
Fig. 6 is a structural representation of antenna system of the present invention.
The name that each label is corresponding among the figure is called:
10,24 surpass the material radome, 12 surpass material layer, 14,16 protective layers, 17 medium substrates, 18 metal micro structures, 182 branches, 184 first metal wire sections, 186 second metal wire sections, 188 the 3rd metal wire sections, 19 surpass material cell, 20 antenna systems, 22 antennas
Embodiment
As depicted in figs. 1 and 2, ultra material radome 10 of the present invention comprises and one surpasses the protective layer 14,16 that material layer 12 and two is covered in two apparent surfaces of said ultra material layer 12 respectively.Said ultra material layer 12 comprises medium substrate 17 and is arranged in a surface of said medium substrate 17 in array and a plurality of metal micro structures 18 of being covered by corresponding protection layer 14, as being positioned at the pattern of the grid that is formed by dotted line among Fig. 2.We are called a ultra material cell 19 with medium substrate 17 parts at each metal micro structure 18 and place thereof, and are as shown in Figure 2, and then said ultra material layer 12 can be regarded as by a plurality of said ultra material cell 19 arrays and forms.Generally, the physical dimension of each ultra material cell 19 is relevant with the electromagnetic wavelength that passes said ultra material radome 10, and in this execution mode, the length of said ultra material cell 19 and width are equal to L1 (like Fig. 3), L1=8.97～9.05mm.Also promptly, the take up an official post spacing at center of two hithermost metal micro structures 18 of said medium substrate 17 is 8.97～9.05mm.Said medium substrate 17 is processed by polymeric material, ceramic material, ferroelectric material, ferrite material, ferromagnetic material etc., and its thickness is 1～1.02mm.
Each metal micro structure 18 is the plane with certain geometrical shape (two dimension) or three-dimensional (three-dimensional) structures that the metal wire sections by certain size constitutes, and wherein, the cross section of metal wire sections can be for flat or other arbitrary shapes, as cylindric.As shown in Figure 3; Said medium substrate 17 lip-deep metal micro structures 18 are made up of the metal wire sections with flat cross section; Be flakes; It comprises two mutually orthogonal branches 182; Each branch 182 comprise be parallel to each other and over against first metal wire sections 184 and second metal wire sections 186 and between said first metal wire sections 184 and second metal wire sections 186 and with said first metal wire sections 184 and second metal wire sections, 186 vertical the 3rd metal wire sections 188 that link to each other; Said the 3rd metal wire sections 188 is connected in the mid point of said first metal wire sections 184 and second metal wire sections 186, and the 3rd metal wire sections 188 of said two branches 182 is vertically intersected on mid point each other, and the joining of said two branches 182 (being the center of metal micro structure 18) is overlapping with the center of said ultra material cell 19.The length of two branches 182 of said medium substrate 17 lip-deep metal micro structures 18 is equal to L2; L2=8.86～8.92mm, first metal wire sections 184 of each branch 182 and the length of second metal wire sections 186 are equal to L3, L3=5～7mm; The width of first, second of said metal micro structure 18 and the 3rd metal wire sections 184,186,188 is equal to W; W=0.08～0.13mm, thickness also equate, are 0.017～0.019mm.By on can know, arbitrary metal micro structure 18 with the straight line perpendicular to the plane (also being said medium substrate 17) at its place and the center through said metal micro structure 18 serve as axle clockwise or be rotated counterclockwise 90 degree, 180 degree, 270 degree or 360 degree backs and all overlap with the metal micro structure 18 of initial position.
In the reality, said metal micro structure 18 is to be covered in said medium substrate 17 surperficial metal forming such as Copper Foils through etching to form.Certainly, said a plurality of metal micro structure 18 can also adopt plating, bore quarter, photoetching, electronics is carved or ion quarter etc. mode be formed on the surface of said medium substrate 17.
Said two protective layers 14,16 be used to protect said medium substrate 17 and on metal micro structure 18, both thickness is unequal.Wherein, said protective layer 14 is positioned at the side of said medium substrate 17 adhesion metal micro-structurals 18, and thickness is 2～2.05mm, and the thickness of said protective layer 16 is 1～1.03mm.Said two protective layers 14,16 can select any material corrosion-resistant, acidproof, high temperature resistant, anti-season property to process according to concrete applied environment, and form through modes such as casting, coating, sprays.
In order to verify the electromagnetic performance of ultra material radome 10 of the present invention, below we are that sample carries out emulation testing with a concrete ultra material cell 19 and two protective layers 14,16 attached to it.In said sample, the length of ultra material cell 19 and width L1 are equal to 9mm, and the spacing at the center of promptly said medium substrate 17 lip-deep wantonly two hithermost metal micro structures 18 is 9mm; Said medium substrate 17 is glass-epoxy laminated sheet (FR4), and thickness is 1mm; Said metal micro structure 18 is made of copper; The length L 2 of its two branch 182 is equal to 8.9mm; The length L 3 of first metal wire sections 184 and second metal wire sections 186 is equal to 5mm, and the width W of metal wire sections 184,186,188 is equal to 0.1mm, thickness is 0.018mm; And said two protective layers 14,16 are processed by high impact polystyrene (English High impact polystyrene by name is called for short HIPS), and wherein, the thickness of said protective layer 14,16 is respectively 2mm, 1mm.The thickness that also is said protective layer 14 is that the twice of the thickness of said protective layer 16, the thickness of said protective layer 14 equal the gross thickness of said medium substrate 17 and protective layer 16.Emulation obtains, the reflection coefficient S1 of said sample, transmission coefficient S2 and standing-wave ratio with the curve chart of electromagnetic frequency change respectively like Fig. 4 and shown in Figure 5.Can know from figure; Said sample to the electromagnetic reflection coefficient S1 of 7.1～8.5GHz frequency range less than-15dB, transmission coefficient S2 greater than-0.15dB, standing-wave ratio less than 1.3; Show that it reflects and standing-wave ratio is low, transmission is high, little to electromagnetic loss, it is effective to pass through ripple.And since said a plurality of metal micro structures 18 protected by said two protective layers 14,16 processed by HIPS; When said ultra material radome 10 receives external impacts; Can suppress the expansion of crackle, improve its shock resistance, and oil resistant, water-fast, electrical insulating property good.Like this, not only can keep its electromagnetic performance stable, and have mechanical performance preferably.
Please refer to Fig. 6, be antenna system 20 of the present invention.Said antenna system 20 comprises antenna 22 and the ultra material radome 24 that is used to protect said antenna 22.Said antenna 22 can be the antenna of any types such as paster antenna, slot antenna, microstrip antenna; The antenna array that also can form by above-mentioned antenna; Its feeding classification can be coaxial line, slit coupling, microstrip line etc., is merely an electromagnetic emission source shown in the figure.Said ultra material radome 24 is positioned on the electromagnetic wave propagation direction of said antenna 22 receptions and/or emission.According to actual needs; Said ultra material radome 24 is except said two protective layers 14,16 that comprise said ultra material layer 12 of one deck and two apparent surfaces that are covered in said ultra material layer 12; Also can comprise said ultra material layer 12 of multilayer and said two protective layers 14,16 of many groups, and combine through mechanical connection, welding or bonding mode.
In addition, although in the present embodiment, has the medium substrate of processing by the FR4 plate 17 in the said ultra material layer 12; Harder; Be not easy flexural deformation, but in embodiment in fact, said medium substrate 17 can be processed also by other materials that can deform; Letting said ultra material radome 24 can make arbitrary shape according to actual needs, conformal with said antenna 22.Certainly, also can through the plate ultra material sheet material of hot pressing form can be conformal with said antenna 22 ultra material radome 24, perhaps the plate ultra material sheet material of polylith is formed together the ultra material radome 24 of different shape according to certain model splicing.
The above only is some embodiments of the present invention and/or embodiment, should not be construed as limiting the invention.For those skilled in the art; Under the prerequisite that does not break away from basic thought of the present invention; Can also make some improvement and retouching; Thickness like said two protective layers 14,16 also can equate; And the gross thickness of the thickness of said protective layer 14 and said medium substrate 17 and protective layer 16 also can be unequal, and said metal micro structure 18 also can be attached to two apparent surfaces of said medium substrate 17 and covered by corresponding protection layer 14 and 16, and these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (13)
1. ultra material radome; It is characterized in that; Said ultra material radome comprises ultra material layer and is covered in two apparent surfaces' of said ultra material layer first protective layer, second protective layer respectively; Said ultra material layer comprises medium substrate and is arranged in the surface of said medium substrate in array and a plurality of metal micro structures of being covered by the corresponding protection layer; Each metal micro structure comprises two mutually orthogonal branches; Each branch comprise be parallel to each other and first metal wire sections of equal in length and second metal wire sections and between said first metal wire sections and second metal wire sections and with vertical the 3rd metal wire sections that links to each other of said first metal wire sections and second metal wire sections; The two ends of said the 3rd metal wire sections are connected to the mid point of said first metal wire sections and second metal wire sections, and the 3rd metal wire sections of said two branches is vertically intersected on mid point each other, and the thickness of the thickness of said first protective layer and said second protective layer is unequal.
2. ultra material radome according to claim 1 is characterized in that, said a plurality of metal micro structures are between said medium substrate and said first protective layer.
3. ultra material radome according to claim 2 is characterized in that, the thickness of said first protective layer is two times of thickness of said second protective layer.
4. ultra material radome according to claim 3 is characterized in that the thickness of said first protective layer equals the gross thickness of the said medium substrate and second protective layer.
5. ultra material radome according to claim 2 is characterized in that the spacing at the center of wantonly two hithermost metal micro structures is 8.97～9.05mm.
6. ultra material radome according to claim 5 is characterized in that the length of arbitrary branch of each metal micro structure equals 8.86～8.92mm.
7. ultra material radome according to claim 6; It is characterized in that; The width of first metal wire sections of arbitrary branch of each metal micro structure, second metal wire sections and the 3rd metal wire sections equates that the thickness of first metal wire sections, second metal wire sections and the 3rd metal wire sections equates.
8. ultra material radome according to claim 7; It is characterized in that; First metal wire sections of arbitrary branch of each metal micro structure and the length of second metal wire sections are equal to 5～7mm, and the thickness that the width of first metal wire sections, second metal wire sections and the 3rd metal wire sections is equal to 0.08～0.13mm, first metal wire sections, second metal wire sections and the 3rd metal wire sections is equal to 0.017～0.019mm.
9. ultra material radome according to claim 8 is characterized in that the thickness of said first protective layer is 2～2.05mm, and the thickness of said second protective layer is 1～1.03mm.
10. ultra material radome according to claim 9 is characterized in that the thickness of said medium substrate is 1～1.02mm.
11. ultra material radome according to claim 10 is characterized in that, the take up an official post spacing at center of two hithermost metal micro structures of said medium substrate equals 9mm; The length of two branches of each metal micro structure is equal to 8.9mm; The length of said first metal wire sections and second metal wire sections is equal to 5mm, and the width of said first metal wire sections, second metal wire sections and the 3rd metal wire sections is equal to 0.1mm, thickness is equal to 0.018mm; The thickness of said first protective layer equals 2mm, and the thickness of said second protective layer equals 1mm; The thickness of said medium substrate is 1mm.
12. ultra material radome according to claim 11 is characterized in that said medium substrate is the glass-epoxy laminated sheet, said first protective layer and second protective layer are processed by high impact polystyrene.
13. antenna system; Comprise antenna; It is characterized in that said antenna system also comprises the ultra material radome on the electromagnetic wave propagation direction that is arranged at said antenna reception and/or emission, said ultra material radome is any described ultra material radome among the claim 1-12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210132754.3A CN102683846B (en) | 2012-04-28 | 2012-04-28 | Metamaterial antenna cover and antenna system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210132754.3A CN102683846B (en) | 2012-04-28 | 2012-04-28 | Metamaterial antenna cover and antenna system |
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| CN102683846A true CN102683846A (en) | 2012-09-19 |
| CN102683846B CN102683846B (en) | 2015-02-04 |
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| CN201210132754.3A Active CN102683846B (en) | 2012-04-28 | 2012-04-28 | Metamaterial antenna cover and antenna system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014094243A1 (en) * | 2012-12-18 | 2014-06-26 | 深圳市鼎耀科技有限公司 | High temperature resistant aerial |
| CN104638351A (en) * | 2013-11-13 | 2015-05-20 | 深圳光启创新技术有限公司 | Antenna baffle board and high-gain antenna |
| CN105609908A (en) * | 2016-03-07 | 2016-05-25 | 中国矿业大学 | Dual-band band-pass filter insensitive to polarization and wide-angle incidence |
| CN108832302A (en) * | 2018-05-03 | 2018-11-16 | 西安电子科技大学 | A kind of phase gradient super surface system in bifrequency biradial direction |
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| JPH01174715A (en) * | 1987-12-26 | 1989-07-11 | Bridgestone Corp | Pollutant dispersion preventing film |
| JPH1174715A (en) * | 1997-08-29 | 1999-03-16 | Alps Electric Co Ltd | Antenna system |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01174715A (en) * | 1987-12-26 | 1989-07-11 | Bridgestone Corp | Pollutant dispersion preventing film |
| JPH1174715A (en) * | 1997-08-29 | 1999-03-16 | Alps Electric Co Ltd | Antenna system |
Non-Patent Citations (1)
| Title |
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| KAI-SHYUNG CHEN等: "Microstrip Antenna Gain Enhancement by Metamaterial Radome with More Subwavelength Holes", 《MICROWAVE CONFERENCE》, 31 December 2009 (2009-12-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014094243A1 (en) * | 2012-12-18 | 2014-06-26 | 深圳市鼎耀科技有限公司 | High temperature resistant aerial |
| CN104638351A (en) * | 2013-11-13 | 2015-05-20 | 深圳光启创新技术有限公司 | Antenna baffle board and high-gain antenna |
| CN104638351B (en) * | 2013-11-13 | 2018-09-28 | 深圳光启创新技术有限公司 | Antenna-reflected plate and high-gain aerial |
| CN105609908A (en) * | 2016-03-07 | 2016-05-25 | 中国矿业大学 | Dual-band band-pass filter insensitive to polarization and wide-angle incidence |
| CN108832302A (en) * | 2018-05-03 | 2018-11-16 | 西安电子科技大学 | A kind of phase gradient super surface system in bifrequency biradial direction |
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| CN102683846B (en) | 2015-02-04 |
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Effective date of registration: 20151124 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. |