CN102769199B - Metamaterial plate and the metamaterial antenna cover be made up of it and wireless communication system - Google Patents
Metamaterial plate and the metamaterial antenna cover be made up of it and wireless communication system Download PDFInfo
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- CN102769199B CN102769199B CN201210220516.8A CN201210220516A CN102769199B CN 102769199 B CN102769199 B CN 102769199B CN 201210220516 A CN201210220516 A CN 201210220516A CN 102769199 B CN102769199 B CN 102769199B
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Abstract
The present invention relates to a kind of metamaterial plate, be applicable to being approximately the electromagnetic transmission of 5.725-5.850GHz frequency range, it structure sheaf of two apparent surfaces comprising substrate and be attached to described substrate, each structure sheaf comprises metal micro structure, each metal micro structure comprises two mutually orthogonal branches, each branch comprises and being parallel to each other and two first just right metal wire sections and between described two first metal wire sections and second metal wire sections that be connected vertical with described two first metal wire sections, the two ends of described second metal wire sections are connected to the mid point of described two first metal wire sections, second metal wire sections of described two branches is vertically intersected on mid point each other, each metal micro structure being positioned at arbitrary surface of described substrate all just partners to the metal micro structure on another surface, and the geometry of often pair of metal micro structure is all identical with size, thus has good wave penetrate capability.Present invention also offers a kind of metamaterial antenna cover of being made up of this metamaterial plate and wireless communication system.
Description
Technical field
The radome that the present invention relates to Meta Materials and be made up of it and wireless communication system, more particularly, relate to a kind of metamaterial plate of being made up of the metamaterial structure unit of brand-new design and the metamaterial antenna cover be made up of it and wireless communication system.
Background technology
Meta Materials is a kind of artificial composite structure with extraordinary physical property not available for natural material.Current, people form Meta Materials by arranging the Meta Materials metal micro structure with certain geometrical shape be made up of metal wire sections on substrate.Due to dielectric constant and/or the magnetic permeability that the geometry of metal micro structure and size and arrangement can be utilized to change Meta Materials spatial points, it is made to produce the electromagnetic response of expection, to control electromagnetic wave propagation, so, be with a wide range of applications in multiple field, become various countries scientific research personnel and fall over each other one of hot fields studied.And making in radome by Novel meta-material, due to its can significantly improve radome wave penetrate capability and day by day by researcher is paid close attention to.
Current, mobile Internet is flourish, and the construction of base communication device starts in a large number, and wireless city is in the ascendant.In order to reduce networking cost, the electromagnetic performance of industry to the radome on Wireless Telecom Equipment is had higher requirement, and requires low reflection, high wave transparent, and wishes to install Wireless Telecom Equipment at the website of existing communication equipment, with reduce layout loaded down with trivial details, and can realize resource recycling.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of there is good wave penetrate capability metamaterial plate and the metamaterial antenna cover be made up of it and wireless communication system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of metamaterial plate, be applicable to being approximately the electromagnetic transmission of 5.725-5.850GHz frequency range, it comprises at least one metamaterial sheet, described metamaterial sheet comprises substrate and is attached to the structure sheaf of two apparent surfaces of described substrate, each structure sheaf comprises multiple metal micro structure be arranged in array, each metal micro structure comprises two mutually orthogonal branches, each branch comprises and being parallel to each other and two first just right metal wire sections and between described two first metal wire sections and second metal wire sections that be connected vertical with described two first metal wire sections, the two ends of described second metal wire sections are connected to the mid point of described two first metal wire sections, second metal wire sections of described two branches is vertically intersected on mid point each other, be positioned at each metal micro structure on arbitrary surface of described substrate all just to a metal micro structure on another surface, and make every two of two apparent surface's correspondence positions of described substrate just right metal micro structures overlapping and partner, the geometry of often pair of metal micro structure is all identical with size.
Preferably, the distance at the center of adjacent two metal micro structures recently in arbitrary surface of described substrate is all equal, is equal to 15.8 ~ 16.5mm.
Preferably, the identical length etc. of the first metal wire sections of two branches of each metal micro structure, is equal to 9.4 ~ 10.4mm.
Preferably, the identical length etc. of the second metal wire sections of two branches of each metal micro structure, is equal to 14.8 ~ 15.5mm.
Preferably, the width of described first metal wire sections and the second metal wire sections is equal, is equal to 0.08 ~ 0.13mm.
Preferably, the spacing at the center of adjacent two metal micro structures recently in arbitrary surface of described substrate equals 16mm; The length of the first metal wire sections of two branches of each metal micro structure is equal to 9.92mm, the length of the second metal wire sections is equal to 15.4mm, described first metal wire sections and the second metal wire sections width is equal to 0.1mm, thickness is equal to 0.018mm.
Preferably, described first metal wire sections and the second metal wire sections are made of copper.
Preferably, described substrate is made up of fiberglass.
A kind of metamaterial antenna cover, for the protection of 5.8GHzWi-Fi antenna, it comprises at least one metamaterial sheet, described metamaterial sheet comprises substrate and is attached to the structure sheaf of two apparent surfaces of described substrate, each structure sheaf comprises multiple metal micro structure be arranged in array, each metal micro structure comprises two mutually orthogonal branches, each branch comprises and being parallel to each other and two first just right metal wire sections and between described two first metal wire sections and second metal wire sections that be connected vertical with described two first metal wire sections, the two ends of described second metal wire sections are connected to the mid point of described two first metal wire sections, second metal wire sections of described two branches is vertically intersected on mid point each other, be positioned at each metal micro structure on arbitrary surface of described substrate all just to a metal micro structure on another surface, and make every two of two apparent surface's correspondence positions of described substrate just right metal micro structures overlapping and partner, the geometry of often pair of metal micro structure is all identical with size.
A kind of wireless communication system, comprise casing, the metamaterial antenna cover being fixed on described casing and the antenna be placed in described metamaterial antenna cover, described metamaterial antenna cover comprises at least one metamaterial sheet, described metamaterial sheet comprises substrate and is attached to the structure sheaf of two apparent surfaces of described substrate, each structure sheaf comprises multiple metal micro structure be arranged in array, each metal micro structure comprises two mutually orthogonal branches, each branch comprises and being parallel to each other and two first just right metal wire sections and between described two first metal wire sections and second metal wire sections that be connected vertical with described two first metal wire sections, the two ends of described second metal wire sections are connected to the mid point of described two first metal wire sections, second metal wire sections of described two branches is vertically intersected on mid point each other, be positioned at each metal micro structure on arbitrary surface of described substrate all just to a metal micro structure on another surface, and make every two of two apparent surface's correspondence positions of described substrate just right metal micro structures overlapping and partner, the geometry of often pair of metal micro structure is all identical with size.
Preferably, described antenna is 5.8GHzWi-Fi antenna.
Metamaterial plate of the present invention and the metamaterial antenna cover be made up of it and wireless communication system have following beneficial effect: owing to having the multipair metal micro structure of given shape, described metamaterial plate and the metamaterial antenna cover be made up of it little to being approximately the electromagnetic loss of 5.725-5.850GHz frequency range, and make it have good wave penetrate capability thoroughly, ripple rate is high, can allow the scope that the quorum sensing inhibitor of wireless communication system is larger, thus decrease layouting of radio communication base station, save networking cost.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
Fig. 1 is the structural representation of metamaterial plate of the present invention;
Fig. 2 is the plane enlarged diagram of the structure sheaf in Fig. 1;
Fig. 3 is the enlarged diagram of a metal micro structure in Fig. 2;
Fig. 4 is the response curve of the reflection coefficient S1 of a metamaterial unit sample in Fig. 1 and transmission coefficient S2 with electromagnetic frequency change;
Fig. 5 is the schematic diagram of metamaterial antenna cover of the present invention;
Fig. 6 is the schematic diagram of wireless communication system of the present invention.
The name that in figure, each label is corresponding is called:
10 metamaterial sheet, 12 substrates, 14 structure sheafs, 16 metal micro structures, 162 branches, 164 first metal wire sections, 166 second metal wire sections, 18 metamaterial unit, 20,34 metamaterial antenna cover, 30 wireless communication systems, 32 casings
Embodiment
" sheet material " in metamaterial plate of the present invention does not limit profile, means the sheet material of the arbitrary shape such as smooth, bending, has both comprised hard plate, also comprises soft film.Described metamaterial plate comprises at least one metamaterial sheet 10, as shown in Figure 1, described metamaterial sheet 10 comprises the structure sheaf 14 that substrate 12 and two is attached to two apparent surfaces of described substrate 12 respectively, described substrate 12 is made up of polymeric material, ceramic material, ferroelectric material, ferrite material, ferromagnetic material etc., as FR4(and epoxy resin) plate, F4B(and polytetrafluoroethylene) plate or ABS(and acrylonitrile-butadiene-styrene copolymer) plate etc., thickness can be 3.6 ~ 4.3mm.
Please refer to Fig. 2, each structure sheaf 14 comprises multiple metal micro structure 16 be arranged in array, as being positioned at the pattern of the grid formed by dotted line in figure, and each metal micro structure 16 being positioned at arbitrary surface of described substrate 12 is all just to a metal micro structure 16 on another surface, the metal micro structure 16 on arbitrary surface of also i.e. described substrate 12 overlaps with the metal micro structure 16 on another surface.Like this, the every two just right metal micro structures 16 being positioned at two apparent surface's correspondence positions of described substrate 12 partner, and the geometry of often pair of metal micro structure 16 and size are all identical.
Usually, substrate 12 part at often pair of metal micro structure 16 and place thereof is called a metamaterial unit 18, described like this metamaterial sheet 10 can be regarded as and formed by multiple described metamaterial unit 18 array.And the physical dimension of each metamaterial unit 18 is relevant with the electromagnetic wavelength passed, in present embodiment, length and the width of described metamaterial unit 18 are equal to L1, L1=15.8 ~ 16.5mm(is as Fig. 3), also namely, the spacing at the center of adjacent two metal micro structures 16 recently in arbitrary surface of described substrate 12 is 15.8 ~ 16.5mm.
Each metal micro structure 16 is the plane (two dimension) with certain geometrical shape or three-dimensional (three-dimensional) structure that are made up of the metal wire sections of certain size, wherein, metal wire sections is made up of the such as conductive metal material such as copper, silver, and its cross section can be flat or other arbitrary shapes, as cylindric.As shown in Figure 3, described metal micro structure 16 is made up of the metal wire sections with flat cross section, roughly in flakes, it comprises two mutually orthogonal branches 162, each branch 162 comprises and being parallel to each other and two first just right metal wire sections 164 and between described two first metal wire sections 164 and second metal wire sections 166 that be connected vertical with described two first metal wire sections 164, the two ends of described second metal wire sections 166 are connected to the mid point of described two first metal wire sections 164, and the second metal wire sections 166 of described two branches 162 is vertically intersected on mid point each other, and the joining of described two branches 162 is the center of described metal micro structure 16, and with the center superposition of described metamaterial unit 19.The length of the first metal wire sections 164 of described two branches 162 is equal to L2, the length of L2=9.4 ~ 10.4mm, the second metal wire sections 166 is equal to L3, L3=14.8 ~ 15.5mm, and the width of described two first and second metal wire sections 164,166 is equal to W, W=0.08 ~ 0.13mm, thickness is also equal, is 0.016 ~ 0.019mm.As from the foregoing, described metal micro structure 16 with perpendicular to its place namely plane (also described substrate 12) and by the straight line at the center of described metal micro structure 16 be axle clockwise or all can overlap with the metal micro structure 16 of initial position after being rotated counterclockwise 90 degree, 180 degree, 270 degree or 360 degree.
During design, select different raw materials to make the substrate 12 of different-thickness, and regulate the distance between the length of the first and second metal wire sections 164,166 of metal micro structure 16, width and thickness, adjacent two metal micro structures 16 recently, metal micro structure 16 arrangement etc. on the substrate 12 obtains the metamaterial sheet 10 little to the electromagnetic wave loss of special frequency channel.
Generally, the metal micro structure 16 in described metamaterial sheet 10 is by etching two metal formings being covered in two apparent surfaces of described substrate 12 respectively as Copper Foil, silver foil and being formed.Certainly, these metal micro structures 16 can also adopt plating, bore quarters, photoetching, electronics quarter or ion quarter etc. mode be formed on two apparent surfaces of described substrate 12.
In addition, according to actual needs, described metamaterial plate can comprise metamaterial sheet 10 described in multilayer, and these metamaterial sheet 10 both along mutually bonding perpendicular to the direct forward and backward surface, direction of sheet surfaces and be superimposed, also can arrange and fit together by these metamaterial sheet 10 equally spacedly.
In order to verify the electromagnetic performance of the metamaterial sheet 10 of metamaterial plate of the present invention, below we with a metamaterial unit 18 for sample carries out emulation testing.In described metamaterial unit 18, its length and width L1 are equal to 16mm, i.e. the spacing at the center of adjacent two metal micro structures 16 recently on arbitrary surface of described substrate 12 is 16mm; Described substrate 12 is made up of fiberglass, and thickness is 4mm; Described metal micro structure 16 is made of copper, the length L2 of the first metal wire sections 164 of its two branch 162 is equal to 9.92mm, the length L3 of the second metal wire sections 166 is equal to 15.4mm, and described two first and second metal wire sections 164,166 width W is equal to 0.1mm, thickness is 0.018mm.Through emulation obtain, the reflection coefficient S1 of described sample and transmission coefficient S2 with electromagnetic frequency change curve chart as shown in Figure 4.As seen from the figure, roughly 5.725-5.850GHz frequency range (being also the 5.8GHzWi-Fi frequency range that Chinese industrial and information-based portion specify), the transmission coefficient S2 of described sample is less than-0.2dB, also namely little to electromagnetic loss, wave transmission rate is high, and much smaller than the wave transparent coefficient of fiberglass itself.Therefore metamaterial plate of the present invention makes it diminish to electromagnetic loss owing to attached to metamaterial structure unit on fiberglass, thus improves its wave penetrate capability, reaches good wave transmission effect.
Please refer to Fig. 5, is metamaterial antenna cover 20 of the present invention, for the protection of 5.8GHzWi-Fi antenna.Described metamaterial antenna cover 20 is made up of metamaterial plate of the present invention, also be, described metamaterial antenna cover 20 comprises metamaterial sheet 10 described at least one, when comprising multi-layer metamaterial lamella 10, these metamaterial sheet 10 are combined by the mode being mechanically connected, welding or bond.Described metamaterial antenna cover 20 can be made arbitrary shape according to actual needs, and the shape conformal with antenna can be made, in present embodiment, described metamaterial antenna cover 20 is roughly in Fang Tizhuan, it was both formed by the metamaterial plate that hot pressing whole piece is smooth, also can obtain flexible metamaterial plate or the formation that metamaterial plate smooth for polylith is stitched together with soft substrate.According to the needs of described metamaterial antenna cover 20 load-bearing, strengthen its mechanical strength by superposition multi-layer metamaterial lamella 10, make it more sturdy and durable.As can be seen here, the electromagnetic loss that metamaterial antenna cover of the present invention 20 pairs of 5.8GHzWi-Fi antenna transmissions go out is little, and wave transmission rate is high.
In addition, in order to the useful life preventing extraneous adverse circumstances from shortening described metamaterial antenna cover 20, overcoat can be coated on its surface, to resist the infringement of corrosion etc.And the metal micro structure outside being exposed to can be allowed to be protected, from the wearing and tearing in the external world, its good wave penetrate capability can be allowed to keep stable.
Please refer to Fig. 6, is wireless communication system 30 of the present invention.The antenna (not shown) that described wireless communication system 30 comprises casing 32, is fixed on the metamaterial antenna cover 34 of described casing 32 and is placed in described metamaterial antenna cover 34.Described casing 32 roughly in the square bodily form, can be fixed on outdoor or indoor.Described metamaterial antenna cover 34 is metamaterial antenna cover 20 of the present invention, is made up of metamaterial plate of the present invention, and other are the same, repeat no more.Described antenna can be the antenna of any types such as paster antenna, slot antenna, microstrip antenna, the antenna array that also can be made up of above-mentioned antenna, and its feeding classification can be coaxial line, slot-coupled, microstrip line etc.In present embodiment, described antenna is 5.8GHzWi-Fi antenna.The electromagnetic loss gone out due to described metamaterial antenna cover 20 pairs of 5.8GHzWi-Fi antenna transmissions is little, therefore the signal of wireless communication system 30 of the present invention can cover larger scope, thus decreases layouting of radio communication base station, saves networking cost.
The above is only 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 not departing from basic thought of the present invention, some improvements and modifications can also be made, and these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a metamaterial plate, it is characterized in that, described metamaterial plate is applicable to the electromagnetic transmission of 5.725-5.850GHz frequency range, comprise at least one metamaterial sheet, described metamaterial sheet comprises substrate and is attached to the structure sheaf of two apparent surfaces of described substrate, each structure sheaf comprises multiple metal micro structure be arranged in array, each metal micro structure comprises two mutually orthogonal branches, each branch comprises and being parallel to each other and two first just right metal wire sections and between described two first metal wire sections and second metal wire sections that be connected vertical with described two first metal wire sections, the two ends of described second metal wire sections are connected to the mid point of described two first metal wire sections, second metal wire sections of described two branches is vertically intersected on mid point each other, be positioned at each metal micro structure on arbitrary surface of described substrate all just to a metal micro structure on another surface, and make every two of two apparent surface's correspondence positions of described substrate just right metal micro structures overlapping and partner, the geometry of often pair of metal micro structure is all identical with size, the substrate portion at often pair of metal micro structure and place thereof is called a metamaterial unit, described metamaterial sheet is formed by multiple described metamaterial unit array, wherein, the distance at the center of adjacent two metal micro structures recently in arbitrary surface of described substrate is all equal, be equal to 15.8 ~ 16.5mm, the thickness of described substrate is 3.6 ~ 4.3mm, the thickness of described first metal wire sections and the second metal wire sections is 0.016 ~ 0.019mm, the length of the first metal wire sections of two branches of each metal micro structure is equal to 9.4 ~ 10.4mm, the length of the second metal wire sections of two branches of each metal micro structure is equal to 14.8 ~ 15.5mm, the width of described first metal wire sections and the second metal wire sections is equal to 0.08 ~ 0.13mm.
2. metamaterial plate according to claim 1, is characterized in that, the spacing at the center of adjacent two metal micro structures recently in arbitrary surface of described substrate equals 16mm; The length of the first metal wire sections of two branches of each metal micro structure is equal to 9.92mm, the length of the second metal wire sections is equal to 15.4mm, described first metal wire sections and the second metal wire sections width is equal to 0.1mm, thickness is equal to 0.018mm.
3. metamaterial plate according to claim 2, is characterized in that, described first metal wire sections and the second metal wire sections are made of copper.
4. metamaterial plate according to claim 3, is characterized in that, described substrate is made up of fiberglass.
5. a metamaterial antenna cover, is characterized in that, the metamaterial plate of described metamaterial antenna cover according to any one of claim 1-4 is made, for the protection of 5.8GHzWi-Fi antenna.
6. a wireless communication system, it is characterized in that, the antenna that described wireless communication system comprises casing, is fixed on the metamaterial antenna cover of described casing and is placed in described metamaterial antenna cover, described metamaterial antenna cover is the metamaterial antenna cover described in claim 5.
7. wireless communication system according to claim 6, is characterized in that, described antenna is 5.8GHzWi-Fi antenna.
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| CN201210220516.8A CN102769199B (en) | 2012-06-29 | 2012-06-29 | Metamaterial plate and the metamaterial antenna cover be made up of it and wireless communication system |
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| CN201210220516.8A CN102769199B (en) | 2012-06-29 | 2012-06-29 | Metamaterial plate and the metamaterial antenna cover be made up of it and wireless communication system |
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| CN102769199B true CN102769199B (en) | 2015-11-18 |
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| CN112310648B (en) * | 2020-10-28 | 2022-05-10 | 福耀玻璃工业集团股份有限公司 | Vehicle glass antenna |
| WO2022100817A1 (en) * | 2020-11-10 | 2022-05-19 | Huawei Technologies Co., Ltd. | Antenna apparatus with three-dimensional metallic metasurface superstrate structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201515005U (en) * | 2009-09-11 | 2010-06-23 | 北京和协航电科技有限公司 | satellite navigation antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201515005U (en) * | 2009-09-11 | 2010-06-23 | 北京和协航电科技有限公司 | satellite navigation antenna |
Non-Patent Citations (1)
| Title |
|---|
| Microstrip Antenna Gain Enhancement by Metamaterial Radome with More Subwavelength Holes;Kai-Shyung Chen, et al.;《Microwave Conference, 2009. APMC 2009. Asia Pacific》;20091210;第790-792页 * |
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