CN103682655B - Micro-structural, metamaterial board and antenna system - Google Patents
Micro-structural, metamaterial board and antenna system Download PDFInfo
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- CN103682655B CN103682655B CN201210316736.0A CN201210316736A CN103682655B CN 103682655 B CN103682655 B CN 103682655B CN 201210316736 A CN201210316736 A CN 201210316736A CN 103682655 B CN103682655 B CN 103682655B
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Abstract
The present invention provides a kind of micro-structural, metamaterial board and antenna system.The topological pattern of the micro-structural is using its central point as the point of rotation, the new topological pattern obtained after being rotated by 90 ° clockwise or counterclockwise and former topological pattern registration；The micro-structural includes the first basic structure and the second basic structure, and second basic structure is that the first basic structure is rotated clockwise into 90 ° by the point of rotation of the second metal branch central point to obtain.The metamaterial board includes one or more layers base material, and the cycle is placed with the first micro-structural and the second micro-structural respectively on every layer of base material opposite sides surface；Second micro-structural is mirrored into symmetrically with the first micro-structural.The antenna system, including feed and the above-mentioned metamaterial board that is arranged on feed electromagnetic radiation wave path.Micro-structural topology and/or size of the invention by designing Meta Materials so that the feed in antenna system, which need not make any change, can strengthen the gain of feed.
Description
Technical field
The present invention relates to Meta Materials technical field, more particularly to a kind of micro-structural, metamaterial board and antenna system.
Background technology
Light, as one kind of electromagnetic wave, it is when through glass, because the wavelength of light is much larger than the chi of atom
It is very little, therefore we can use the univers parameter of glass, such as refractive index, rather than the details parameter of the atom of composition glass to retouch
State response of the glass to light.Accordingly, when research material is to other electromagnetic responses, any yardstick is far small in material
The univers parameter of material, such as permittivity ε and magnetic permeability μ can also be used to responding for electromagnetic wave in the structure of electromagnetic wavelength
To describe.Cause the dielectric constant and magnetic conductivity of material each point all identical or difference by the designing material structure of every, from
And make it that the overall dielectric constant of material and magnetic conductivity are arranged in certain rule, the magnetic conductivity and dielectric constant of rule arrangement
So that material has response macroscopically to electromagnetic wave, such as convergence electromagnetic wave, divergent electromagnetic ripple, electromagnetic wave absorption.Such
The magnetic conductivity and the material of dielectric constant arranged with rule are referred to as Meta Materials.
As shown in figure 1, dimensional structure diagrams of the Fig. 1 for the elementary cell of existing composition Meta Materials.Meta Materials it is basic
Unit includes the base material 200 that snowflake type man-made microstructure 100 and the man-made microstructure are adhered to.Snowflake type man-made microstructure can be
Artificial metal's micro-structural, it can produce response to change each Meta Materials elementary cell to incident electromagnetic wave electric field and/or magnetic field
Response to incident electromagnetic wave.Multiple Meta Materials elementary cells are arranged according to certain rules, Meta Materials can be made to have electromagnetic wave grand
The response of sight.Because Meta Materials integrally need have macroscopical electromagnetic response to incident electromagnetic wave, therefore each Meta Materials elementary cell pair
The response of incident electromagnetic wave need to form continuous response, and this requires that the size of each Meta Materials elementary cell is less than incident electromagnetic wave five
/ mono- wavelength, the preferably wavelength of incident electromagnetic wave 1/10th.In this segment description, Meta Materials are integrally divided into multiple super materials
Expect that elementary cell is a kind of man-made division method, but should know that such a division methods only for convenience of description, should not regard Meta Materials as
Spliced or assembled by multiple Meta Materials elementary cells, Meta Materials are that artificial metal's micro-structural is arranged in into base in practical application
It may make up on material, technique is simple and with low cost.
The micro-structural topology and/or size of Meta Materials are the important ginsengs for changing Meta Materials to the electromagnetic response of electromagnetic wave
Number.The micro-structural topology of existing Meta Materials is excessively simple, and single to electromagnetic response, purposes is less.
The content of the invention
The technical problems to be solved by the invention are, for the above-mentioned deficiency of prior art, propose a kind of micro-structural, institute
The topological pattern of micro-structural is stated using its central point as the point of rotation, what is obtained after being rotated by 90 ° clockwise or counterclockwise is new
Topological pattern and former topological pattern registration；The micro-structural includes the first basic structure and the second basic structure, first base
This structure include equidistantly be arranged in parallel and equal length the first metal branch, the second metal branch and the 3rd metal branch；
Second metal branch one end end points and the first metal branch homonymy end points are interconnected to form the 4th metal branch, the 4th gold medal
Belong to branch perpendicular to the first metal branch and the second metal branch, the second metal branch other end end points and the 3rd metal branch are same
Side point is interconnected to form fifth metal branch, and the fifth metal branch is perpendicular to the second metal branch and the 3rd metal point
Branch；Second basic structure is to be rotated clockwise the first basic structure as the point of rotation using the second metal branch central point
90 ° obtain.
Further, first metal branch and the 3rd metal branch line width are identical, the 4th metal branch and
Five metal branch lines are wide identical.
Further, the first metal branch line width is more than the 4th metal branch line width, the 4th metal branch line
It is wider than the second metal branch line width.
Further, the first metal branch length is 10 to 13 millimeters, and the first metal branch line width is 1.5 to 2.0
Millimeter；The second metal branch line width is 0.8 to 1.2 millimeter, and the 4th metal branch length is 8 to 9 millimeters, described the
Four metal branch line widths are 1.3 to 1.5 millimeters.
The present invention also proposes a kind of metamaterial board, and the metamaterial board includes one or more layers base material, and every layer of base material is relative
The cycle is placed with the first micro-structural and the second micro-structural to both side surface respectively；First micro-structural is above-mentioned micro-structural, institute
The second micro-structural is stated to be mirrored into symmetrically with the first micro-structural.
Further, dielectric constant of the base material in 10GHZ is 4.0 to 5.0.
Further, the base material is FR-4 materials, F4B materials, PS materials or ceramic material.
The present invention also provides a kind of antenna system, and it includes feed and is arranged on the feed electromagnetic radiation wave path
Above-mentioned metamaterial board.
Further, the feed is paster antenna, microstrip antenna or electromagnetic horn.
Further, the metamaterial board includes 8 layers of base material, and the vertical range of the metamaterial board and the feed is 9
To 11 millimeters.
The present invention is by designing the micro-structural topology and/or size of Meta Materials so that feed in antenna system without
Any change, which need to be made, can strengthen the gain of feed.
Brief description of the drawings
Fig. 1 is the existing structural representation for constituting Meta Materials elementary cell；
Fig. 2 is decomposed into the first basic structure and the second basic structure for the topological structure and micro-structural of micro-structural of the present invention
Schematic diagram；
Fig. 3 is the structural representation of the first micro-structural cycle arrangement in metamaterial board of the present invention；
Fig. 4 is the structural representation of the second micro-structural cycle arrangement in metamaterial board of the present invention；
Fig. 5 be paster antenna not additional metamaterial board when, phi is 0 ° of simulation result schematic diagram；
Fig. 6 be paster antenna not additional metamaterial board when, phi is 90 ° of simulation result schematic diagram；
When Fig. 7 is paster antenna additional metamaterial board, phi is 0 ° of simulation result schematic diagram；
When Fig. 8 is paster antenna additional metamaterial board, phi is 90 ° of simulation result schematic diagram.
Embodiment
It refer to Fig. 2, Fig. 2 is decomposed into the first basic structure and for the topological structure and micro-structural of micro-structural of the present invention
The schematic diagram of two basic structures.In Fig. 2, micro-structural of the present invention is made up of the first basic structure 10 and the second basic structure 20.The
One basic structure 10 includes equidistantly be arrangeding in parallel and the first metal branch 11 of equal length, the second metal branch the 12, the 3rd
Metal branch 13；One end end points of second metal branch 12 and the first metal branch homonymy end points are interconnected to form the 4th metal point
Branch 14, and the 4th metal branch 14 is respectively perpendicular to the first metal branch 11 and the second metal branch 12；Second metal branch 12
Other end end points and the 3rd metal branch homonymy end points are interconnected to form fifth metal branch 15, and 15 points of fifth metal branch
Not perpendicular to the second metal branch 12 and the 3rd metal branch 13.
Second basic structure 20 be by by the first basic structure using the central point of the second metal branch 12 as point of rotation up time
Pin direction, which is rotated by 90 °, to be obtained.Due to the special shape of the first basic structure 20, the second basic structure 20 is with the second metal branch 12
Central point is that 90 ° of point of rotation counterclockwise rotates can also obtain the second basic structure of identical 20.
Due to the special shape of the first basic structure 10 and the second basic structure 20, by the first basic structure 10 and the second base
The micro-structural that this structure 20 is constituted is obtained using its central point as the point of rotation after being rotated by 90 ° clockwise or counterclockwise
New topological pattern and former topological pattern registration.Micro-structural with the class feature is isotropic microstructures, and isotropism is micro-
The structure electromagnetic wave incident to all directions is respectively provided with identical electromagnetic response, can simplify design and improve application.
Preferably, the first metal branch 11 and the 3rd metal branch 13 have identical line width, the He of the 4th metal branch 14
Fifth metal branch 15 has identical line width.The line width of first metal branch 11 is more than the line width of the 4th metal branch 14, the 4th gold medal
Belong to the line width of branch 14 and be more than the line width of the second metal branch 12.
It is highly preferred that the length of the first metal branch 11 is 10 to 13 millimeters, the line width of the first metal branch 11 is 1.5 to 2.0
Millimeter；The line width of second metal branch 12 is 0.8 to 1.2 millimeter, and the length of the 4th metal branch 14 is 8 to 9 millimeters, the 4th metal point
14 line widths of branch are 1.3 to 1.5 millimeters.
The line width of each bar metal branch and length are different and different in response to the frequency of electromagnetic wave according to it, such as when it rings
When answering wave frequency higher, then electromagnetic wavelength is longer, correspondingly, and each bar metal branch length is longer；When it responds electromagnetism
When wave frequency rate is relatively low, then electromagnetic wavelength is shorter, correspondingly, and each bar metal branch length is shorter.
The present invention also provides a kind of metamaterial board, and the metamaterial board includes one or more layers base material, and every layer of base material is relative
The cycle is placed with the first micro-structural and the second micro-structural to both side surface respectively.First micro-structural is the micro-structural shown in Fig. 2, second
Micro-structural is mirrored into symmetrically with the first micro-structural.Fig. 3 and Fig. 4 are refer to, Fig. 3 is that the structure of the first micro-structural cycle arrangement is shown
It is intended to, Fig. 4 is the structural representation arranged in the second micro-structural cycle.
The material of first micro-structural and the second micro-structural can be all kinds of conducting metals such as copper, silver, aluminium.
Dielectric constant of the base material in 10GHZ is preferably 4.0 to 5.0.Meet the substrate material of above-mentioned dielectric constant requirement
Can be FR-4 materials, F4B materials, PS materials or ceramic material etc..
The present invention also provides a kind of antenna system, and it includes feed and is arranged at upper on feed electromagnetic radiation wave path
State metamaterial board.Feed can be the device of all kinds of energy radiated electromagnetic waves such as paster antenna, microstrip antenna, electromagnetic horn.This implementation
In example, the explanation by taking paster antenna as an example.
Metamaterial board in the antenna system of the present embodiment includes 8 layers of base material being made up of FR-4 materials.Every layer of base material
Thickness is 0.2 to 0.5 millimeter, and the thickness of the first micro-structural and the second micro-structural is 0.01 to 0.02 millimeter.Whole metamaterial board
Thickness is less than 5 millimeters, very thin thickness, space-consuming very little.
A paster antenna is chosen below to illustrate to add the humidification after metamaterial board to antenna gain.In the present embodiment
In, paster antenna volume is 41.95 × 41.95 × 1.96mm, and front circle paster circumference is 12.87mm, electromagnetic radiation wave frequency
Rate is 3.43GHZ.Paster antenna not additional metamaterial board when it emulates obtained positive gain maximum using CST simulation softwares
For 3.58dB, and paster antenna not additional metamaterial board when its phi distinguish as shown in Figure 5, Figure 6 for 0 ° and 90 ° of polar figures.
As can be seen from Figure 5, paster antenna not additional metamaterial board when, phi be 0 ° when a width of 80.4 ° of half power bandwidth, as can be seen from Figure 6, patch
Chip antenna not additional metamaterial board when, phi be 90 ° when a width of 99.9 ° of half power bandwidth.
Above-mentioned metamaterial board is added on paster antenna electromagnetic radiation wave path, it is preferable that metamaterial board and paster antenna
Vertical range be 9 to 11 millimeters.Now, emulate electromagnetic wave using CST simulation softwares and pass through the positive gain after metamaterial board
Maximum is 5.47dB.Electromagnetic wave is passed through after metamaterial board, and phi schemes difference as shown in Figure 7, Figure 8 for 0 ° and 90 ° of polar, from
Fig. 7 is understood, after the additional metamaterial board of paster antenna, a width of 64.8 ° of half power bandwidth when phi is 0 °, as it can be observed in the picture that paster day
Line not additional metamaterial board when, phi be 90 ° when a width of 76.3 ° of half power bandwidth.
After above-mentioned the simulation results, additional metamaterial board, the gain performance and half-power bandwidth of paster antenna
Performance is improved well, and without making any change to paster antenna.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (9)
1. a kind of metamaterial board, it is characterised in that：The metamaterial board includes one or more layers base material, every layer of base material opposite sides
The cycle is placed with the first micro-structural and the second micro-structural respectively on surface；
The topological pattern of first micro-structural is rotated by 90 ° clockwise or counterclockwise using its central point as the point of rotation
The new topological pattern obtained afterwards and former topological pattern registration；First micro-structural includes the first basic structure and the second basic knot
Structure, first basic structure includes equidistantly be arrangeding in parallel and the first metal branch of equal length, the second metal branch and
3rd metal branch；Second metal branch one end end points and the first metal branch homonymy end points are interconnected to form the 4th metal point
Branch, the 4th metal branch perpendicular to the first metal branch and the second metal branch, the second metal branch other end end points with
3rd metal branch homonymy end points is interconnected to form fifth metal branch, and the fifth metal branch is perpendicular to the second metal point
Branch and the 3rd metal branch；Second basic structure is using the second metal branch central point as the point of rotation by the first basic structure
90 ° are rotated clockwise to obtain；
Second micro-structural is mirrored into symmetrically with the first micro-structural.
2. metamaterial board as claimed in claim 1, it is characterised in that：Dielectric constant of the base material in 10GHZ be 4.0 to
5.0。
3. metamaterial board as claimed in claim 2, it is characterised in that：The base material is FR-4 materials, F4B materials, PS materials
Or ceramic material.
4. metamaterial board as claimed in claim 1, it is characterised in that：First metal branch and the 3rd metal branch line width
Identical, the 4th metal branch is identical with fifth metal branch line width.
5. metamaterial board as claimed in claim 4, it is characterised in that：The first metal branch line width is more than the 4th metal point
Branch line width, the 4th metal branch line width is more than the second metal branch line width.
6. metamaterial board as claimed in claim 5, it is characterised in that：The first metal branch length is 10 to 13 millimeters,
First metal branch line width is 1.5 to 2.0 millimeters；The second metal branch line width is 0.8 to 1.2 millimeter, the 4th gold medal
It is 8 to 9 millimeters to belong to branch length, and the 4th metal branch line width is 1.3 to 1.5 millimeters.
7. a kind of antenna system, it is characterised in that：Including feed and metamaterial board as claimed in claim 1, the super material
Flitch is arranged on the feed electromagnetic radiation wave path.
8. antenna system as claimed in claim 7, it is characterised in that：The feed is paster antenna, microstrip antenna or loudspeaker
Antenna.
9. antenna system as claimed in claim 7, it is characterised in that：The metamaterial board includes 8 layers of base material, the Meta Materials
The vertical range of plate and the feed is 9 to 11 millimeters.
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| CN104953293A (en) * | 2015-06-30 | 2015-09-30 | 桂林电子科技大学 | Circularly-polarized horn antenna based on C waveband |
| CN105161857B (en) * | 2015-08-03 | 2018-10-12 | 欧阳征标 | A kind of meta-material thin film of Left-hand circular polarization conversion |
| CN107946762B (en) * | 2017-11-15 | 2021-05-07 | 哈尔滨工业大学 | X-waveband miniaturized high-wave-permeability FSS (frequency selective surface system) based on C-type interlayer radar cover wall structure |
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| CN102544717A (en) * | 2011-10-31 | 2012-07-04 | 深圳光启高等理工研究院 | Lens antenna based on metamaterial |
| CN102842767A (en) * | 2012-07-31 | 2012-12-26 | 深圳光启创新技术有限公司 | Microstructure, metamaterial plate and antenna system |
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| US8271241B2 (en) * | 2005-01-18 | 2012-09-18 | University Of Massachusetts Lowell | Chiral metamaterials |
| CN2870195Y (en) * | 2005-08-19 | 2007-02-14 | 李宏强 | Frequency selection device |
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| CN102480009A (en) * | 2011-04-28 | 2012-05-30 | 深圳光启高等理工研究院 | Metamaterial with high dielectric constant |
| CN102544717A (en) * | 2011-10-31 | 2012-07-04 | 深圳光启高等理工研究院 | Lens antenna based on metamaterial |
| CN103296399A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Antenna housing and antenna system based on metamaterials |
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Effective date of registration: 20210408 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. |