CN102904051B - Base station antenna - Google Patents
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- CN102904051B CN102904051B CN201110216339.1A CN201110216339A CN102904051B CN 102904051 B CN102904051 B CN 102904051B CN 201110216339 A CN201110216339 A CN 201110216339A CN 102904051 B CN102904051 B CN 102904051B
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Abstract
The invention relates to a base station antenna. The base station antenna comprises an antenna module with a plurality of arrayed oscillators and a metamaterial module corresponding to the oscillators. The metamaterial module comprises at least one metamaterial lamella, and each metamaterial lamella comprises a base plate and pores formed on the base plate. Each metamaterial lamella is formed by arraying a plurality of metamaterial units. Each metamaterial unit is provided with pores. An area of each metamaterial lamella, facing to each oscillator, forms a refractive index distribution area. The pores are arrayed on the metamaterial units of a plurality of concentric circles located in each refractive index area by centering on the position facing to the center of the corresponding oscillator, so that a plurality of refractive index circles centering on the position facing to the center of the corresponding oscillator are formed. Points on each refractive index circle in each refractive index distribution area are equal in refractive index. With increase of the diameter of the refractive index circles, the refractive index of each refractive index circle decreases and decrement increases. Therefore, half-power bandwidth of the base station antenna diminishes and directionality are increased.
Description
Technical field
The present invention relates to electromagnetic communication field, more particularly, relate to a kind of antenna for base station.
Background technology
Antenna for base station ensures that mobile communication terminal realizes the visual plant of wireless access.Along with the development of mobile communications network, the distribution of base station is more and more intensive, has higher requirement to the directivity of antenna for base station, to avoid mutual interference, allows the farther of Electromagnetic Wave Propagation.
Generally, we represent the directivity of antenna for base station with half-power angle.In power radiation pattern, in a certain plane comprising main lobe greatest irradiation direction, the angle between 2 that relative greatest irradiation direction power flux-density are dropped to half place (or being less than maximum 3dB) calls half-power angle.In field strength pattern, in a certain plane comprising main lobe greatest irradiation direction, relative greatest irradiation direction field intensity is dropped to the angle at 0.707 times of place also referred to as half-power angle.Half-power angle is also known as half-power bandwidth.Half-power bandwidth comprises horizontal plane half-power bandwidth and vertical plane half-power bandwidth.And the electromagnetic wave propagation distance of antenna for base station is determined by vertical plane half-power bandwidth.Vertical plane half-power bandwidth is less, and the gain of antenna for base station is larger, good directionality, and electromagnetic wave propagation distance is far away, otherwise the gain of antenna for base station is less, and directivity is poor, and electromagnetic wave propagation distance is also nearer.
Summary of the invention
The technical problem to be solved in the present invention is, provides that a kind of half-power bandwidth is little, the antenna for base station of good directionality.
The technical solution adopted for the present invention to solve the technical problems is: a kind of antenna for base station, comprise the Meta Materials module of Anneta module and corresponding these oscillators setting with multiple oscillator be arranged in array, described Meta Materials module comprises at least one metamaterial sheet, the aperture that each described metamaterial sheet comprises substrate and formed on the substrate, each metamaterial sheet is arranged by multiple metamaterial unit and forms, and each metamaterial unit is formed with described aperture; Each metamaterial sheet just forms a refraction index profile district to the region of each oscillator, described aperture is allowed to be arranged in be positioned at each refraction index profile district with just in the multiple concentrically ringed metamaterial unit that is the center of circle of the position at the center of each oscillator, to form just justify multiple refractive indexes that the position at the center of corresponding oscillator is the center of circle, the refractive index of the upper each point of same refractive index circle in each refraction index profile district is identical, along with the increase of refractive index diameter of a circle, the refractive index of each refractive index circle reduces and decrease increases.
Preferably, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of deep equality, when the refractive index of the medium of filling in described aperture is less than the refractive index of described substrate, the diameter being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the diameter being arranged in the aperture in each concentrically ringed metamaterial unit increases.
Preferably, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of deep equality, when the refractive index of the medium of filling in described aperture is greater than the refractive index of described substrate, the diameter being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the diameter being arranged in the aperture in each concentrically ringed metamaterial unit reduces.
Preferably, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of equal diameters, when the refractive index of the medium of filling in described aperture is less than the refractive index of described substrate, the degree of depth being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the degree of depth being arranged in the aperture in each concentrically ringed metamaterial unit increases.
Preferably, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of equal diameters, when the refractive index of the medium of filling in described aperture is greater than the refractive index of described substrate, the degree of depth being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the degree of depth being arranged in the aperture in each concentrically ringed metamaterial unit reduces.
Preferably, each metamaterial unit forms the above aperture, and the circular hole that to be physical dimension identical of the aperture in each metamaterial unit, when the refractive index of the medium of filling in described aperture is less than the refractive index of described substrate, the quantity being arranged in the aperture in same each metamaterial unit concentrically ringed is identical, along with the increase of concentrically ringed diameter, be arranged in the increasing number of the aperture in each concentrically ringed metamaterial unit.
Preferably, each metamaterial unit forms the above aperture, and the circular hole that to be physical dimension identical of the aperture in each metamaterial unit, when the refractive index of the medium of filling in described aperture is greater than the refractive index of described substrate, the quantity being arranged in the aperture in same each metamaterial unit concentrically ringed is identical, along with the increase of concentrically ringed diameter, the quantity being arranged in the aperture in each concentrically ringed metamaterial unit reduces.
Preferably, what fill in described aperture is air.
Preferably, each metamaterial unit is formed the described aperture that number is identical, and the circular hole that to be physical dimension identical of the aperture in each metamaterial unit, the refractive index being arranged in the medium of filling in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the refractive index being arranged in the medium of filling in the aperture in each concentrically ringed metamaterial unit reduces.
Preferably, the corresponding same oscillator of each metamaterial sheet of described Meta Materials module forms identical refraction index profile district, and the refractive index of the refractive index circle that in each metamaterial sheet, the diameter of corresponding same oscillator is identical is all identical.
Antenna for base station of the present invention has following beneficial effect: by forming multiple aperture in the metamaterial sheet of described Meta Materials module, and allow the arrangement of described aperture meet certain rule, so that just there is refractive index reducing and the multiple refractive indexes circle of the regularity of distribution that increases of decrease being formed in the refraction index profile district of each oscillator, thus make the electromagnetic wave launched by oscillator change electromagnetic wave propagation path through during described Meta Materials module, reduce the half-power bandwidth of antenna for base station, improve its directivity and gain, allow the farther of Electromagnetic Wave Propagation.
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 antenna for base station of the present invention;
Fig. 2 is the front enlarged drawing of the Anneta module in Fig. 1;
Fig. 3 is the front enlarged drawing of a metamaterial sheet of Meta Materials module in Fig. 1;
Fig. 4 is the first arrangement schematic diagram of the aperture in a refraction index profile district of a corresponding oscillator;
Fig. 5 is the refractive index circle distribution schematic diagram in a refraction index profile district of a corresponding oscillator;
Fig. 6 is the second arrangement schematic diagram of the aperture in a refraction index profile district of a corresponding oscillator;
Fig. 7 is the 3rd arrangement schematic diagram of the aperture in a refraction index profile district of a corresponding oscillator;
Fig. 8 is that the Meta Materials sheet module of the corresponding oscillator of the present invention is to electromagnetic convergence schematic diagram.
The name that in figure, each label is corresponding is called:
10 antenna for base station, 12 Anneta modules, 14 base plates, 16 oscillators, 20 Meta Materials modules, 22 metamaterial sheet, 222 substrates, 223 metamaterial unit, 224 apertures, 24 refractive index circles, 26 refraction index profile districts
Embodiment
The invention provides a kind of antenna for base station, half-power bandwidth being diminished, to improve its directivity and gain by arranging a Meta Materials module on the electromagnetic radiation or receive direction of antenna.
We know, can reflect when electromagnetic wave spreads into another uniform dielectric by a kind of uniform dielectric, and this difference of refractive index due to two media causes.And for non-uniform dielectric, electromagnetic wave also can occur to reflect and to the larger position deviation of refractive index at media interior.And refractive index equals
also namely the refractive index of medium depends on its dielectric constant and magnetic permeability.
Meta Materials is a kind of is that elementary cell is also carried out spatial arrangement in a specific way, had the artificial composite material of special electromagnetic response with artificial micro-structure, people often utilize the topology of artificial micro-structure and physical dimension to change dielectric constant and the magnetic permeability of each point in space, visible, we can utilize the topology of artificial micro-structure and/or physical dimension to modulate dielectric constant and the magnetic permeability of spatial points, thus the refractive index of spatial points is changed with certain rule, to control electromagnetic wave propagation, and be applied to the occasion with special electromagnetic response demand.
As depicted in figs. 1 and 2, described antenna for base station 10 comprises Anneta module 12 and Meta Materials module 20, and described Anneta module 12 comprises base plate 14 and array arrangement in the oscillator 16 of described base plate 14.Be 4 × 9 arrays of the interlaced arrangement of every two row's adjacent vibration generators 16 shown in figure, in other examples, can arrange in any way for any amount of oscillator 16, as matrix arrangement.It is 3 metamaterial sheet 22 situations of bonding together mutually of direct forward and backward surface each other between two that described Meta Materials module 20 comprises shown in metamaterial sheet 22, figure that multiple edge is formed by stacking perpendicular to the direction (also i.e. the electromagnetic radiation of antenna for base station or receive direction) of sheet surfaces.During concrete enforcement, the number of described metamaterial sheet 22 can increase and decrease according to demand, and each metamaterial sheet 22 also can arrange equally spacedly and fit together, and can arrange impedance matching layer, to reduce reflection of electromagnetic wave in described Meta Materials module 20 both sides.Because the refraction index profile rule of each metamaterial sheet 22 is all identical, therefore only choose a metamaterial sheet 22 below and be exemplarily described.
As shown in Figure 3 and Figure 4, each metamaterial sheet 22 comprises substrate 222 and the multiple apertures 224 be formed on described substrate 222.Described substrate 222 can be made up of the high molecular polymers such as polytetrafluoroethylene or ceramic material.Described aperture 224 can be formed on described substrate 222 according to the suitable technique of the different corresponding employing of the material of described substrate 222.Such as when described substrate 222 is made up of high molecular polymer, on described substrate 222, form described aperture 224 by techniques such as drilling machine boring, punch forming or injection mo(u)ldings, then on described substrate 222, form described aperture 224 by drilling machine boring, punch forming or high temperature sintering etc. technique when described substrate 222 is made up of ceramic material.
Generally, we by the substrate 222 part people at each aperture 224 and place thereof for being defined as a metamaterial unit 223, and the size of each metamaterial unit 223 should be less than 1/5th of the electromagnetic wavelength of required response, be preferably 1/10th, produce continuous response to make described metamaterial sheet 22 pairs of electromagnetic waves.As can be seen here, described aperture 224 is very small, therefore in figure 3 by its approximate paintings point.
The electromagnetic wave launched from each oscillator 16 can be similar to sees spherical wave as, and wants long-distance communications, needs to be changed into plane wave.That is, described Meta Materials module 20 will change the electromagnetic wave convergence of spherical wave form the electromagnetic wave of plane wave form into.Therefore, the refraction index profile of described metamaterial sheet 22 spatial points should meet following rule: with just to the position at the center of each oscillator 16 for the center of circle is formed multiple concentric refractive index circle 24, on same refractive index circle 24, the refractive index of each point is identical, and the increase of the diameter of 24 is justified along with refractive index, the refractive index of each refractive index circle 24 reduces and decrease increases.Thus each oscillator 16 corresponding forms a refraction index profile district 26, as being delimited by a dashed line the region of formation in Fig. 3 by corresponding refractive index circle 24 in described metamaterial sheet 22.In the refraction index profile district 26 supposing a corresponding oscillator 16, the refractive index of the refractive index circle 24 that each diameter increases is n
1, n
2, n
3... n
p, then n is had
1>n
2>n
3> ... >n
p, and (n
p-1-n
p) > ... > (n
2-n
3) > (n
1-n
2), q be greater than 0 natural number.Refractive index circle 24 is represented with concentric circles, and representing the variable quantity of the refractive index of adjacent refractive index circle 24 by the size of spacing between neighboring concentric circle, then the variations in refractive index rule of each refractive index circle 24 in the refraction index profile district 26 of a corresponding oscillator 16 is as shown in Figure 5.
From experiment, when the medium of filling in the aperture 224 in each metamaterial unit 223 is identical and its refractive index is less than the refractive index of described base material 222, the volume that described aperture 224 accounts for whole metamaterial unit 223 is larger, and the refractive index of described metamaterial unit 223 is less; When the medium of filling in the aperture 224 in each metamaterial unit 223 is identical and its refractive index is greater than the refractive index of described base material 222, the volume that described aperture 224 accounts for whole metamaterial unit 223 is larger, and the refractive index of described metamaterial unit 223 is larger; When the volume that described aperture 224 accounts for whole metamaterial unit 223 is identical, the refractive index of the different medium of filling in described aperture 224 is directly proportional to the refractive index of described metamaterial unit 223.The volume that described aperture 224 accounts for whole metamaterial unit 223 realizes by the aperture 224 that formation physical dimension in described metamaterial unit 223 is different, also can realize by forming multiple measure-alike aperture 224 in described metamaterial unit 223.Be described one by one below.
As shown in Figure 4, be the arrangement schematic diagram of the aperture 224 in the refraction index profile district 26 of a corresponding oscillator 16.Change the principle in Electromagnetic Wave Propagation path from Meta Materials, we can in described metamaterial sheet 22 with just to the position at the center of each oscillator 16 for the center of circle is formed multiple concentric circles, thus allow each metamaterial unit 223 be arranged on these concentric circless.Make the degree of depth of the aperture 224 be arranged in same each metamaterial unit 223 concentrically ringed all identical with diameter, and along with the increase of concentrically ringed diameter, the degree of depth being arranged in the aperture 224 in each concentrically ringed metamaterial unit 223 is constant and diameter increases.Described refraction index profile district 26 can be formed by these concentric circless in described metamaterial sheet 22.Because the aperture 224 on different-diameter concentric circles characterizes different dielectric constants and magnetic permeability together from the appropriate section of described substrate 222, thus the refractive index that has forming each oscillator 16 corresponding in described metamaterial sheet 22 reduces and multiple refractive indexes circles 24 of the regularity of distribution of decrease increase.From front, each metamaterial sheet 22 can be regarded as to be arranged by multiple metamaterial unit 223 and forms, and the size of each metamaterial unit 223 is general very small, can be similar to and regards a point as, then circle just can be regarded as by multiple metamaterial unit 223 circumferentially stacking.Therefore in the diagram, described aperture 224 array arrangement can be similar to regard as arranges along concentric circles.
In other examples, also the described aperture 224 with same diameter can be allowed to be arranged in just on the multiple concentric circless that are the center of circle of the position at the center of each oscillator 16, along with the increase of concentrically ringed diameter, only modulate its dielectric constant and magnetic permeability by the degree of depth adjusting described aperture 224, allow on the concentric circles of different-diameter and there is different refractive indexes, thus formed and there is refractive index reduce and multiple refractive indexes circles 24 of the regularity of distribution of increasing of decrease.
In addition, we also can form the identical circular hole of more than one physical dimension (namely diameter and the degree of depth are all equal) in a metamaterial unit 223, adjust its refractive index, as shown in Figure 6 by the number of the circular hole that each metamaterial unit 223 is offered.In described metamaterial sheet 22 each oscillator 16 corresponding refraction index profile district 26 in each metamaterial unit 223 on the distributed number rule of aperture 224 be: allow described aperture 224 be arranged in be positioned at described refraction index profile district 26 with just in the multiple concentrically ringed metamaterial unit 223 that is the center of circle of the center of corresponding oscillator 16, the quantity being arranged in the aperture 224 in same each metamaterial unit 223 concentrically ringed is identical, along with the increase of concentrically ringed diameter, be arranged in the increasing number of the aperture 224 in each concentrically ringed metamaterial unit 223.Like this, also can just there is refractive index reducing and the multiple refractive indexes circle 24 of the regularity of distribution that increases of decrease being formed in the refraction index profile district 26 of corresponding oscillator 16.Owing to each metamaterial unit 223 being formed the identical circular hole of more than one physical dimension, the technique described base material 222 being formed described aperture 224 can be reduced at like this.
In above-described several embodiment, what fill in described aperture 224 is all air, and its refractive index is less than the refractive index of described substrate 222 certainly.In fact, also the medium that refractive index is greater than the refractive index of described substrate 222 can be filled in described aperture 224, as the situation shown in for Fig. 6, in described metamaterial sheet 22 each oscillator 16 corresponding refraction index profile district 26 in each metamaterial unit 223 on the distributed number rule of aperture 224 be: allow described aperture 224 be arranged in be positioned at described refraction index profile district 26 with just in the multiple concentrically ringed metamaterial unit 223 that is the center of circle of the center of corresponding oscillator 16, the quantity being arranged in the aperture 224 in same each metamaterial unit 223 concentrically ringed is identical, along with the increase of concentrically ringed diameter, the quantity being arranged in the aperture 224 in each concentrically ringed metamaterial unit 223 reduces.
As shown in Figure 7, for being distributed in described metamaterial sheet 22 the filling schematic diagram of filling the medium of different refractivity in each identical aperture 224 of physical dimension in the refraction index profile district 26 of a corresponding oscillator 16.Therefore have, the medium of different refractivity in the filling rule of described aperture 224 is: with the aperture 224 that physical dimension that the multiple concentrically ringed metamaterial unit 223 just formed for the center of circle the position at the center of oscillator 16 is arranged is all identical, the refractive index being arranged in the medium of filling in the aperture 224 in same each metamaterial unit 223 concentrically ringed is identical, along with the increase of concentrically ringed diameter, the refractive index being arranged in the medium of filling in the aperture 224 in each concentrically ringed metamaterial unit 223 reduces.If represent the size of refractive index of the medium of filling in described aperture 224 with hatched density, then the dielectric distribution of the different refractivity that each aperture 224 in the refraction index profile district 26 of a corresponding oscillator 16 is filled as described in Figure 7.In Fig. 7, each metamaterial unit 223 is only formed a described aperture 224.In other implementations, several identical or not identical described aperture 244 can be formed in each metamaterial unit 223, as long as ensure that the volume of the aperture 224 in each metamaterial unit 223 is all equal.
Then multiple described metamaterial sheet 22 is superimposed, allow corresponding same oscillator 16 in metamaterial sheet 22 described in each form identical refraction index profile district 26, and the refractive index of the refractive index that in metamaterial sheet 22 described in each, diameter of corresponding same oscillator 16 is identical circle 24 is all identical.
As shown in Figure 8, for each metamaterial sheet 22 during Meta Materials module 20 through the corresponding oscillator 16 of the present invention of the electromagnetic wave of spherical wave form converges it and change the schematic diagram of the electromagnetic wave injection of plane wave form into.Visible, by formation in each metamaterial sheet 22 of described Meta Materials module 20, there is the aperture 224 of certain arrangement rule or in aperture 224, fill dielectric constant and the magnetic permeability that identical or different medium modulates each metamaterial unit 223, and then formation has refractive index reduction and the refractive index circle 24 of the regularity of distribution of decrease increase in described metamaterial sheet 22, make electromagnetic wave to specific direction deviation, thus allow the electromagnetic wave convergence of spherical wave form change the electromagnetic wave of plane wave form into, the half-power bandwidth reducing antenna for base station diminishes, improve its directivity and gain, allow the farther of Electromagnetic Wave Propagation.
The above is only multiple embodiment 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, multiple improvements and modifications can also be made, and these improvements and modifications also should be considered as protection scope of the present invention.Such as, the mode described in above-described embodiment severally can combine use, also can obtain the refraction index profile rule needed for described metamaterial sheet 22.Described aperture 224 also can be the hole of any shape.
Claims (10)
1. an antenna for base station, it is characterized in that, comprise the Meta Materials module of Anneta module and corresponding these oscillators setting with multiple oscillator be arranged in array, described Meta Materials module comprises at least one metamaterial sheet, the aperture that each described metamaterial sheet comprises substrate and formed on the substrate, each metamaterial sheet is arranged by multiple metamaterial unit and forms, and each metamaterial unit is formed with described aperture; Each metamaterial sheet just forms a refraction index profile district to the region of each oscillator, described aperture is allowed to be arranged in be positioned at each refraction index profile district with just in the multiple concentrically ringed metamaterial unit that is the center of circle of the position at the center of each oscillator, to form just justify multiple refractive indexes that the position at the center of corresponding oscillator is the center of circle, the refractive index of the upper each point of same refractive index circle in each refraction index profile district is identical, along with the increase of refractive index diameter of a circle, the refractive index of each refractive index circle reduces and decrease increases.
2. antenna for base station according to claim 1, it is characterized in that, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of deep equality, when the refractive index of the medium of filling in described aperture is less than the refractive index of described substrate, the diameter being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the diameter being arranged in the aperture in each concentrically ringed metamaterial unit increases.
3. antenna for base station according to claim 1, it is characterized in that, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of deep equality, when the refractive index of the medium of filling in described aperture is greater than the refractive index of described substrate, the diameter being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the diameter being arranged in the aperture in each concentrically ringed metamaterial unit reduces.
4. antenna for base station according to claim 1, it is characterized in that, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of equal diameters, when the refractive index of the medium of filling in described aperture is less than the refractive index of described substrate, the degree of depth being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the degree of depth being arranged in the aperture in each concentrically ringed metamaterial unit increases.
5. antenna for base station according to claim 1, it is characterized in that, each metamaterial unit forms a described aperture, and the aperture in each metamaterial unit is the circular hole of equal diameters, when the refractive index of the medium of filling in described aperture is greater than the refractive index of described substrate, the degree of depth being arranged in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the degree of depth being arranged in the aperture in each concentrically ringed metamaterial unit reduces.
6. antenna for base station according to claim 1, it is characterized in that, each metamaterial unit forms the above aperture, and the circular hole that to be physical dimension identical of the aperture in each metamaterial unit, when the refractive index of the medium of filling in described aperture is less than the refractive index of described substrate, the quantity being arranged in the aperture in same each metamaterial unit concentrically ringed is identical, along with the increase of concentrically ringed diameter, is arranged in the increasing number of the aperture in each concentrically ringed metamaterial unit.
7. antenna for base station according to claim 1, it is characterized in that, each metamaterial unit forms the above aperture, and the circular hole that to be physical dimension identical of the aperture in each metamaterial unit, when the refractive index of the medium of filling in described aperture is greater than the refractive index of described substrate, the quantity being arranged in the aperture in same each metamaterial unit concentrically ringed is identical, and along with the increase of concentrically ringed diameter, the quantity being arranged in the aperture in each concentrically ringed metamaterial unit reduces.
8. the antenna for base station according to claim 2,4 or 6, is characterized in that, what fill in described aperture is air.
9. antenna for base station according to claim 1, it is characterized in that, each metamaterial unit is formed the described aperture that number is identical, and the circular hole that to be physical dimension identical of the aperture in each metamaterial unit, the refractive index being arranged in the medium of filling in the aperture in each metamaterial unit same concentrically ringed in each refraction index profile district is identical, along with the increase of concentrically ringed diameter, the refractive index being arranged in the medium of filling in the aperture in each concentrically ringed metamaterial unit reduces.
10. antenna for base station according to claim 1, it is characterized in that, the corresponding same oscillator of each metamaterial sheet of described Meta Materials module forms identical refraction index profile district, and the refractive index of the refractive index circle that in each metamaterial sheet, the diameter of corresponding same oscillator is identical is all identical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110216339.1A CN102904051B (en) | 2011-07-29 | 2011-07-29 | Base station antenna |
| PCT/CN2011/084632 WO2013016938A1 (en) | 2011-07-29 | 2011-12-26 | Base station antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110216339.1A CN102904051B (en) | 2011-07-29 | 2011-07-29 | Base station antenna |
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| CN102904051A CN102904051A (en) | 2013-01-30 |
| CN102904051B true CN102904051B (en) | 2015-04-22 |
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| CN112636004B (en) * | 2019-10-09 | 2022-09-13 | 安徽工业大学 | Metamaterial focusing antenna for measuring space-time evolution of streamer electron density |
Citations (3)
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|---|---|---|---|---|
| JP2001085936A (en) * | 1999-09-09 | 2001-03-30 | Matsushita Electric Ind Co Ltd | High frequency substrate, dielectric lens antenna and its manufacture |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| JP2011112942A (en) * | 2009-11-27 | 2011-06-09 | Toyota Central R&D Labs Inc | Optical deflection element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8300294B2 (en) * | 2009-09-18 | 2012-10-30 | Toyota Motor Engineering & Manufacturing North America, Inc. | Planar gradient index optical metamaterials |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001085936A (en) * | 1999-09-09 | 2001-03-30 | Matsushita Electric Ind Co Ltd | High frequency substrate, dielectric lens antenna and its manufacture |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| JP2011112942A (en) * | 2009-11-27 | 2011-06-09 | Toyota Central R&D Labs Inc | Optical deflection element |
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Effective date of registration: 20140422 Address after: 518034 A international business center, No. 1061, Xiang Mei Road, Guangdong, Shenzhen, Futian District, China 18B Applicant after: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Address before: 518000 Nanshan District City, Guangdong province high tech Zone in the middle of a high tech building, No. 9 software building Applicant before: Shenzhen Kuang-Chi Institute of Advanced Technology Applicant before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |
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Effective date of registration: 20210422 Address after: 518057 2 / F, software building, No.9, Gaoxin Middle Road, Nanshan District, Shenzhen, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 518034. A, 18B, CIC international business center, 1061 Mei Xiang Road, Shenzhen, Guangdong, Futian District Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |