CN208782041U - A kind of front and back is than mimo antenna of good performance - Google Patents
A kind of front and back is than mimo antenna of good performance Download PDFInfo
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- CN208782041U CN208782041U CN201821378368.1U CN201821378368U CN208782041U CN 208782041 U CN208782041 U CN 208782041U CN 201821378368 U CN201821378368 U CN 201821378368U CN 208782041 U CN208782041 U CN 208782041U
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- radiating element
- mimo antenna
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Abstract
The utility model relates to a kind of front and backs than mimo antenna of good performance, including reflecting plate, multiple row radiating element and multiple groups isolating bar, radiating element described in multiple row is successively equidistantly mounted on the reflecting plate, be equipped with one group on the center line between the adjacent two column radiating element described in isolating bar；Radiating element described in each column includes multiple radiation assemblies, and multiple radiation assemblies are distributed at equidistant linear array；U-shaped spacer is equipped between the two neighboring radiation assembly；The radiation assembly in the adjacent two column radiating element is dislocatedly distributed along the length direction of the reflecting plate.The beneficial effects of the utility model are: can improve the front and back ratio of each column radiating element directional diagram by setting isolating bar, can reduce the coupling between radiating element, than 3dB or more before and after the wave beam after improving synthesis in the case where no increase assembly complexity.
Description
Technical field
The utility model relates to fields of communication technology more particularly to a kind of front and back than mimo antenna of good performance.
Background technique
Communication region partitioning is several cells by Modern Mobile Communications Systems, and each cell is an independent communication
Unit, oneself corresponding distinctive antenna for base station and working frequency.In the case that frequency spectrum resource is rich, this communication mode can
Meet user demand well；In the limited situation of frequency spectrum resource, in order to improve the message capacity of whole system, usually in phase
Minizone across a certain distance uses spectrum reuse technique.However using the cell between same communication frequency, there are signal interferences
Problem.In order to inhibit this interference, in principle for can pass through and reduce transmission power and either increase distance between co-frequency cell
To solve.But reducing transmission power will lead to the decline of coverage cell communication quality, increase distance and spectrum reuse between co-frequency cell
Technology original intention is disagreed.
TD_SCDMA is the wireless communication world mark for being accepted extensively and being approved based on Intellectual Property in China, in the world
It is quasi-.Flexibly due to the adjustment of smart antenna directional diagram, it is widely applied in real network optimization.With traditional base station antenna
Linear array is different, and smart antenna has very big advantage using the group formation formula of face battle array in beam shaping effect.In view of face battle array
Front face area is bigger in practical applications for antenna, and relatively high requirement is proposed to base station construction.Common carrier synthesis is examined
Consider antenna index and capital construction cost, stringenter size, which limits, to be proposed to antenna.Compact-sized antenna is by a period of time and array
Between coupling influence, cause array excipient wave beam to can not show a candle to desired effect, compare index including front and back.
Utility model content
Technical problem to be solved in the utility model is in view of the drawbacks of the prior art, it is better than performance to provide a kind of front and back
Good mimo antenna.
The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of front and back was than MIMO days of good performance
Line, including reflecting plate, multiple row radiating element and multiple groups isolating bar, radiating element described in multiple row are successively equidistantly mounted on described anti-
Penetrate on plate, be equipped with one group on the center line between the adjacent two column radiating element described in isolating bar；It is radiated described in each column
Unit includes multiple radiation assemblies, and multiple radiation assemblies are distributed at equidistant linear array；In the two neighboring spoke
It penetrates between component and is equipped with U-shaped spacer；The radiation assembly in the adjacent two column radiating element is along the reflecting plate
Length direction be dislocatedly distributed.
The beneficial effects of the utility model are: by setting isolating bar, before each column radiating element directional diagram can be improved
After compare, can reduce the coupling between radiating element, it is no increase assembly complexity in the case where improve synthesis after wave beam
Front and back ratio 3dB or more；By the way that radiation assembly is dislocatedly distributed along the length direction of reflecting plate, the coupling between array can reduce
It closes；U-shaped spacer improves the overall performance of mimo antenna by changing the directional diagram performance of single radiation assembly；In addition, can
To change the shape and corresponding size of isolating bar, strong operability according to different frequency range and boundary condition.
Based on the above technical solution, the utility model can also do following improvement.
Further, the distance between two neighboring described radiation assembly d is 0.7 λ to 0.85 λ, wherein work centered on λ
The corresponding operation wavelength of frequency.
The beneficial effect of above-mentioned further scheme is: the distance between radiation assembly is a period of time spacing, is center work
0.7 to 0.85 times of the corresponding operation wavelength of working frequency guarantees the elevation radiation patytern excipient effect of mimo antenna.
Further, isolating bar described in every group includes base isolation item and multiple load isolating bars, the base isolation item
It is mounted on the center line between the adjacent two column radiating element；Multiple load isolating bars are periodically distributed setting and exist
On the base isolation item, period spacing is at least d.
The beneficial effect of above-mentioned further scheme is: by the way that load isolating bar is arranged on base isolation item, can be improved
The front and back ratio of each column radiating element directional diagram；Period spacing is at least d, can reduce base isolation item and load isolating bar pair
The influence of other radiances of mimo antenna；Furthermore it is possible to change load isolating bar according to different frequency range and boundary condition
Shape and corresponding size, strong operability.
Further, the period spacing is 2d to 3d.
The beneficial effect of above-mentioned further scheme is: in this period spacing, base isolation item and load isolating bar pair
The influence of other radiances of mimo antenna is the smallest.
Further, in the transverse direction of the cross central line radiation assembly adjacent thereto of each load isolating bar
Heart line is overlapped.
The beneficial effect of above-mentioned further scheme is: guaranteeing friendship of the mimo antenna on the direction of horizontal radiation pattern ± 60 °
Fork polarization does not deteriorate.
Further, each load isolating bar is bilateral symmetry, the shape is such that but be not limited to " 1 " font,
" T " font or " ten " font.
The beneficial effect of above-mentioned further scheme is: decoupling effect is preferable.
Further, the column pitch k between the adjacent two column radiating element is about 0.7 λ.
The beneficial effect of above-mentioned further scheme is: compromise of the mimo antenna in size and aspect of performance.
Further, the dislocation spacing l being dislocatedly distributed between the radiation assembly in the adjacent two column radiating element is
The half of the distance between two neighboring radiation assembly d.
The beneficial effect of above-mentioned further scheme is: can reduce the mutual coupling between adjacent linear arrays.
Further, the length of the U-shaped spacer is 0.6 λ to 0.9 λ, it is highly 0.1 λ to 0.22 λ, width is 0.15 λ
To 0.33 λ.
The beneficial effect of above-mentioned further scheme is: guarantee mimo antenna horizontal radiation pattern valve is wide, front and back ratio, hands over
The indexs such as fork polarization meet communicating requirement.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model；
Fig. 2 is the top view of the utility model；
Fig. 3 is the structural schematic diagram of the split type isolating bar of the utility model；
Fig. 4 is the structural schematic diagram of the utility model integral type isolating bar；
Fig. 5 is the structural schematic diagram of the U-shaped spacer of the utility model；
Fig. 6 a to 6c is several geometrical model figures that the utility model loads isolating bar；
In attached drawing, component names representated by each label are as follows:
1, reflecting plate, 2, radiating element, 21, radiation assembly, 3, isolating bar, 31, base isolation item, 32, load isolating bar,
4, U-shaped spacer.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1, Figure 2 and shown in Fig. 5, a kind of front and back is than mimo antenna of good performance comprising reflecting plate 1, multiple row spoke
Unit 2 and multiple groups isolating bar 3 are penetrated, radiating element 2 described in multiple row is successively equidistantly mounted on the reflecting plate 1, adjacent two
Arrange isolating bar 3 described in being equipped with one group on the center line between the radiating element 2；Radiating element 2 described in each column includes more
A radiation assembly 21, multiple radiation assemblies 21 are distributed at equidistant linear array；In the two neighboring radiation assembly 21
Between be equipped with U-shaped spacer 4；The radiation assembly 21 in the adjacent two column radiating element 2 is along the reflecting plate 1
Length direction is dislocatedly distributed.
Radiation assembly 21 is dislocatedly distributed along the length direction of reflecting plate 1, can reduce the coupling between array.
It is required according to mimo antenna gain, valve are wide etc., in the present embodiment, the radiating element 2 is provided with 4 column altogether, often
The number for arranging the radiation assembly 21 in the radiating element 2 is 16, and each radiation assembly 21 is dual polarization battle array
Son, specific structure and model are existing well-known technique, and details are not described herein.
The distance between the two neighboring radiation assembly 21 d is 0.7 λ to 0.85 λ, wherein λ is center working frequency pair
The operation wavelength answered, the distance between two neighboring described radiation assembly 21 d is a period of time spacing.
As shown in figure 3, isolating bar 3 described in every group includes base isolation item 31 and multiple load isolating bars 32, the base
Plinth isolating bar 31 is mounted on the center line between the adjacent two column radiating element 2；Multiple 32 periods of load isolating bar
Property distribution be arranged on the base isolation item 31, period spacing is at least d, can reduce base isolation item 31 and load
Influence of the isolating bar 32 to other radiances of mimo antenna, wherein other radiances of mimo antenna include antenna directivity
The performance parameters such as parameter, antenna gain, input impedance, standing-wave ratio.
By the way that load isolating bar 32 is arranged on base isolation item 31,2 directional diagram of radiating element described in each column can be improved
Front and back ratio.
In the present embodiment, the period spacing is preferably 2d to 3d, the experimental results showed that, in this period spacing, base
The influence of plinth isolating bar 31 and load isolating bar 32 to other radiances of mimo antenna is the smallest.
The transverse center of the cross central line of each load isolating bar 32 radiation assembly 21 adjacent thereto
Line is overlapped.
The base isolation item 31 can be made of materials such as aluminium alloy or pcb boards.
As shown in Fig. 6 a to 6c in Fig. 6, each load isolating bar 32 is bilateral symmetry, the shape is such that but
It is not limited to " 1 " font, " T " font or " ten " font.
Metalwork processing can be used in the load isolating bar 32 or pcb board corrosion is made.
As shown in Figure 4, it is preferred that the base isolation item 31 can also be set with the load isolating bar 32 using integrated
Meter forms integral type isolating bar.
Column pitch k between the adjacent two column radiating element 2 is about 0.7 λ.
The dislocation spacing l being dislocatedly distributed between the radiation assembly 21 in the adjacent two column radiating element 2 is adjacent
The half of the distance between two radiation assemblies 21 d, i.e. l=d/2.
The reflecting plate 1 is metal processing piece.
The length of the U-shaped spacer 4 is 0.6 λ to 0.9 λ, is highly 0.1 λ to 0.22 λ, and width is 0.15 λ to 0.33
λ。
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of front and back is than mimo antenna of good performance, it is characterised in that: including reflecting plate (1), multiple row radiating element (2) and
Multiple groups isolating bar (3), radiating element (2) described in multiple row are successively equidistantly mounted on the reflecting plate (1), in adjacent two column institute
State isolating bar (3) described in being equipped with one group on the center line between radiating element (2)；Radiating element described in each column (2) includes
Multiple radiation assemblies (21), multiple radiation assemblies (21) are distributed at equidistant linear array；In the two neighboring radiation
U-shaped spacer (4) are equipped between component (21)；The radiation assembly (21) edge in the adjacent two column radiating element (2)
The length direction of the reflecting plate (1) be dislocatedly distributed.
2. a kind of front and back is than mimo antenna of good performance according to claim 1, it is characterised in that: the two neighboring spoke
Penetrating the distance between component (21) d is 0.7 λ to 0.85 λ, wherein λ is the corresponding operation wavelength of center working frequency.
3. a kind of front and back is than mimo antenna of good performance according to claim 2, it is characterised in that: isolating bar described in every group
It (3) include base isolation item (31) and multiple load isolating bars (32), the base isolation item (31) is mounted on adjacent two column
On center line between the radiating element (2)；The periodically distribution of multiple load isolating bars (32) is arranged in the base
On plinth isolating bar (31), period spacing is at least d.
4. a kind of front and back is than mimo antenna of good performance according to claim 3, it is characterised in that: the period spacing is
2d to 3d.
5. a kind of front and back is than mimo antenna of good performance according to claim 3, it is characterised in that: it is each it is described load every
The cross central line of cross central line from item (32) radiation assembly (21) adjacent thereto is overlapped.
6. a kind of front and back is than mimo antenna of good performance according to claim 5, it is characterised in that: it is each it is described load every
It is bilateral symmetry from item (32), the shape is such that but being not limited to " 1 " font, " T " font or " ten " font.
7. a kind of front and back is than mimo antenna of good performance according to claim 2, it is characterised in that: the adjacent two column spoke
The column pitch k penetrated between unit (2) is about 0.7 λ.
8. a kind of front and back is than mimo antenna of good performance according to claim 2, it is characterised in that: the adjacent two column spoke
The dislocation spacing l being dislocatedly distributed between the radiation assembly (21) penetrated in unit (2) is the two neighboring radiation assembly
The distance between (21) half of d.
9. a kind of front and back is than mimo antenna of good performance according to claim 7, it is characterised in that: the U-shaped spacer
(4) length is 0.6 λ to 0.9 λ, is highly 0.1 λ to 0.22 λ, and width is 0.15 λ to 0.33 λ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821378368.1U CN208782041U (en) | 2018-08-24 | 2018-08-24 | A kind of front and back is than mimo antenna of good performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821378368.1U CN208782041U (en) | 2018-08-24 | 2018-08-24 | A kind of front and back is than mimo antenna of good performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208782041U true CN208782041U (en) | 2019-04-23 |
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ID=66158398
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821378368.1U Expired - Fee Related CN208782041U (en) | 2018-08-24 | 2018-08-24 | A kind of front and back is than mimo antenna of good performance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943295A (en) * | 2019-11-25 | 2020-03-31 | 武汉虹信通信技术有限责任公司 | Multi-beam antenna array, base station antenna and antenna array decoupling method |
| CN111564688A (en) * | 2020-06-16 | 2020-08-21 | 江苏泰科微通讯科技有限公司 | High-gain multi-port base station antenna based on four-column low frequency |
| CN112103644A (en) * | 2020-09-08 | 2020-12-18 | 摩比天线技术（深圳）有限公司 | Antenna and decoupling element thereof |
| WO2022051906A1 (en) * | 2020-09-08 | 2022-03-17 | 摩比天线技术（深圳）有限公司 | Decoupling element and antenna |
-
2018
- 2018-08-24 CN CN201821378368.1U patent/CN208782041U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943295A (en) * | 2019-11-25 | 2020-03-31 | 武汉虹信通信技术有限责任公司 | Multi-beam antenna array, base station antenna and antenna array decoupling method |
| CN110943295B (en) * | 2019-11-25 | 2021-08-03 | 中信科移动通信技术股份有限公司 | Multi-beam antenna array, base station antenna and antenna array decoupling method |
| CN111564688A (en) * | 2020-06-16 | 2020-08-21 | 江苏泰科微通讯科技有限公司 | High-gain multi-port base station antenna based on four-column low frequency |
| CN112103644A (en) * | 2020-09-08 | 2020-12-18 | 摩比天线技术（深圳）有限公司 | Antenna and decoupling element thereof |
| WO2022051906A1 (en) * | 2020-09-08 | 2022-03-17 | 摩比天线技术（深圳）有限公司 | Decoupling element and antenna |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190423 Termination date: 20190824 |