CN108767458A - A kind of extensive mimo antenna of close coupling calibration function - Google Patents
A kind of extensive mimo antenna of close coupling calibration function Download PDFInfo
- Publication number
- CN108767458A CN108767458A CN201810478218.6A CN201810478218A CN108767458A CN 108767458 A CN108767458 A CN 108767458A CN 201810478218 A CN201810478218 A CN 201810478218A CN 108767458 A CN108767458 A CN 108767458A
- Authority
- CN
- China
- Prior art keywords
- coupler
- antarafacial
- mimo antenna
- close coupling
- calibration function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of extensive mimo antennas of close coupling calibration function, it includes the antarafacial coupler top half sequentially stacked from top to bottom, aluminium liner plate, antarafacial coupler lower half portion, upper cover plate, couple feed line and radiation patch layer, it is both provided with dielectric-slab in the upper and lower surface of the aluminium liner plate, fluting is provided on the upper cover plate.The beneficial effects of the invention are as follows：Cavity body structure and antarafacial coupler are combined, and combine electromagnetic compatibility problem, to reach the radiation characteristics such as expected business beam, broadcast beam, high-performance, high stability.
Description
Technical field
The present invention relates to the technical field of antenna structure, especially a kind of extensive mimo antenna of close coupling calibration function.
Background technology
The radio frequency part RRU of traditional base station antenna and antenna are separated structures, and centre uses cable connection.It installs in this way,
Both unsightly, performance was also unstable, and installation process is also troublesome.Meanwhile traditional base station unit number is few, beamforming capabilities compared with
It is weak.It is therefore possible to use extensive MIMO forms, one is integrated as by radio frequency part RRU and antenna array.This scheme,
On the one hand website can be made more beautiful, be easily installed, performance is also more stable, on the other hand, due to having a large amount of unit
Number, the figuration ability of antenna greatly enhance, and traffic rate can be greatly promoted with power system capacity.
But for the antenna for base station of 2.6GHz, 8 × 8 array scale needs 500 × 700mm.And it is this large-sized more
Veneer structure, it may occur that phenomena such as deformation and warpage, electric property is had a greatly reduced quality.Meanwhile for this extensive MIMO days
Line needs individual calibration network mutually to be calibrated to the width in each channel.And since front size is big, signal lead is long,
Unit number is more, decays to calibration signal larger, therefore calibration network is more demanding for the degree of coupling of coupler.In addition, the hair
It is bright to be equally used for 3.5GHz and millimeter wave frequency band.
Invention content
It is an object of the invention to overcome the prior art, provides and a kind of mutually tying cavity body structure with antarafacial coupler
It closes, and combines electromagnetic compatibility problem, to reach the radiation characteristics such as expected business beam, broadcast beam, high-performance, high stable
The extensive mimo antenna of close coupling calibration function of property.
The purpose of the present invention is achieved through the following technical solutions：A kind of extensive mimo antenna of close coupling calibration function,
It include the antarafacial coupler top half sequentially stacked from top to bottom, aluminium liner plate, antarafacial coupler lower half portion, upper cover plate,
Couple feed line and radiation patch layer are both provided with dielectric-slab in the upper and lower surface of the aluminium liner plate, are arranged on the upper cover plate
There is fluting.
The mimo antenna front unit number is 8 × 8, and size is 500mm × 700mm.
It further includes calibration network, and the calibration network is made of the power splitter of coupler and portion 64.
The antarafacial coupler top half and antarafacial coupler lower half portion form antarafacial coupler, antarafacial coupler four
A port is located on two faces of dielectric-slab.
The mimo antenna is 3.5GHz and millimeter wave frequency band.
The present invention has the following advantages：（1）The present invention realizes that close coupling, this structure utilize certainly using antarafacial coupler
The coupling characteristics of body, four ports are located on two faces of dielectric-slab, the use of connector are eliminated, so as to avoid number
Inconsistency caused by numerous connectors is measured, further cost can also substantially reduce.（2）Various pieces of the present invention are independent
It is detachable.Simultaneously as overall dimensions are huge, it is 500 × 700mm, therefore divide cavity configuration that can ideally solve multi-layer board etc.
The influences such as deformation, warpage that structure is brought ensure that the reliability of the electrical property of novel base station antenna.（3）The present invention is in upper cover
Plate carries out cutting, and unit is misplaced and is arranged, solve because upper cover plate board size too greatly to radiating element caused by electromagnetic compatibility
It influences, cross polarization is fallen below into 25dB hereinafter, effectively changing the radiation such as broadcast beam and the business beam needed for antenna for base station
Characteristic.（4）Large-sized pcb board is fixed on aluminium liner plate by the present invention by dividing cavity configuration, so as to avoid large scale PCB
Phenomena such as plate deforms, warpage, ensure that the stability of performance.（5）Four ports of the coupler, each two are one group,
It is located on two blocks of dielectric-slabs of aluminium liner plate or more.Therefore, the required connector of a large amount of perpendicular interconnection is saved.Pass through this
Kind method, has not only saved cost, but also can be to avoid caused by inconsistency caused by numerous connectors and assembling process
Error.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention;
Fig. 2 is the structural schematic diagram of antarafacial coupler top half；
Fig. 3 is the structural schematic diagram of aluminium liner plate；
Fig. 4 is the structural schematic diagram of antarafacial coupler lower half portion；
Fig. 5 is the structural schematic diagram of upper cover plate；
Fig. 6 is couple feed cable architecture schematic diagram；
Fig. 7 is radiation patch schematic diagram of a layer structure；
Fig. 8 is the simulation result diagram of antarafacial coupler；
Fig. 9 is the beam shape of business beam 1；
Figure 10 is the beam shape of business beam 2；
Figure 11 is normalized broadcast beam and its cross polarization；
Figure 12 is the stationary wave characteristic of all 192 ports.
Specific implementation mode
The present invention will be further described below in conjunction with the accompanying drawings, and protection scope of the present invention is not limited to as described below：
As shown in Fig. 1 ~ 8, a kind of extensive mimo antenna of close coupling calibration function, it includes the antarafacial sequentially stacked from top to bottom
Coupler top half, aluminium liner plate, antarafacial coupler lower half portion, upper cover plate, couple feed line and radiation patch layer, the aluminium
It is both provided with dielectric-slab in the upper and lower surface of liner plate, fluting is provided on the upper cover plate, and unit is misplaced and is arranged, solved
Because upper cover plate board size too greatly to radiating element caused by electromagnetic compatibility influence, cross polarization is fallen below into 25dB hereinafter, effectively
Change the radiation characteristics such as broadcast beam and the business beam needed for antenna for base station.
The mimo antenna front unit number is 8 × 8, and size is 500mm × 700mm.
It further includes calibration network, and the calibration network is made of the power splitter of coupler and portion 64.
The antarafacial coupler top half and antarafacial coupler lower half portion form antarafacial coupler, antarafacial coupler four
A port is located on two faces of dielectric-slab, and each two is one group, is located on two blocks of dielectric-slabs of aluminium liner plate or more.Cause
This, saves the required connector of a large amount of perpendicular interconnection.By this method, cost has not only been saved, but also can be to avoid crowd
Error caused by inconsistency and assembling process caused by connectors.The mimo antenna is 3.5GHz and milli
Meter wave frequency band.The present invention realizes that close coupling, this structure utilize the coupling characteristics of itself, four ports using antarafacial coupler
It is located on two faces of dielectric-slab, eliminates the use of connector, brought so as to avoid large number of connector
Inconsistency, further cost can also substantially reduce.The present invention is consolidated large-sized pcb board by dividing cavity configuration simultaneously
Be scheduled on aluminium liner plate, deform so as to avoid large scale pcb board, warpage phenomena such as, ensure that the stability of performance.
Such as the electrical property curve graph for the extensive mimo antenna that Fig. 8 ~ 12 are the present invention.
Claims (5)
1. a kind of extensive mimo antenna of close coupling calibration function, it is characterised in that：It include sequentially stack from top to bottom it is different
Face coupler top half, aluminium liner plate, antarafacial coupler lower half portion, upper cover plate, couple feed line and radiation patch layer, it is described
It is both provided with dielectric-slab in the upper and lower surface of aluminium liner plate, fluting is provided on the upper cover plate.
2. a kind of extensive mimo antenna of close coupling calibration function according to claim 1, it is characterised in that：The MIMO
Antenna array unit number is 8 × 8, and size is 500mm × 700mm.
3. a kind of extensive mimo antenna of close coupling calibration function according to claim 1, it is characterised in that：It further includes
Calibration network, the calibration network are made of the power splitter of coupler and portion 64.
4. a kind of extensive mimo antenna of close coupling calibration function according to claim 1, it is characterised in that：The antarafacial
Coupler top half and antarafacial coupler lower half portion form antarafacial coupler, and four ports of antarafacial coupler are located at Jie
On two faces of scutum.
5. a kind of extensive mimo antenna of close coupling calibration function according to claim 1, it is characterised in that：It is described
Mimo antenna is 3.5GHz and millimeter wave frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810478218.6A CN108767458A (en) | 2018-05-18 | 2018-05-18 | A kind of extensive mimo antenna of close coupling calibration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810478218.6A CN108767458A (en) | 2018-05-18 | 2018-05-18 | A kind of extensive mimo antenna of close coupling calibration function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108767458A true CN108767458A (en) | 2018-11-06 |
Family
ID=64007258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810478218.6A Pending CN108767458A (en) | 2018-05-18 | 2018-05-18 | A kind of extensive mimo antenna of close coupling calibration function |
Country Status (1)
| Country | Link |
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| CN (1) | CN108767458A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090323783A1 (en) * | 2008-06-25 | 2009-12-31 | Motorola, Inc. | Calibration techniques for mimo wireless communication systems |
| CN102904654A (en) * | 2012-10-26 | 2013-01-30 | 南京捷希科技有限公司 | Ultra wide band small multi-channel calibrating network |
| CN203850435U (en) * | 2014-02-28 | 2014-09-24 | 深圳市京华信通信技术有限公司 | Multi-band-frequency 4G array antenna |
| CN204376904U (en) * | 2014-12-04 | 2015-06-03 | 中邮科通信技术股份有限公司 | A kind of calibration network device of smart antenna |
| CN105634627A (en) * | 2014-10-28 | 2016-06-01 | 中兴通讯股份有限公司 | Antenna array coupling calibration network device and method |
| CN106936521A (en) * | 2017-01-12 | 2017-07-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Compact aerial feeds calibration network |
| CN107482320A (en) * | 2017-07-31 | 2017-12-15 | 武汉虹信通信技术有限责任公司 | A kind of 5G large scale arrays antenna |
| CN107706544A (en) * | 2017-09-07 | 2018-02-16 | 广东通宇通讯股份有限公司 | Base station antenna and its antenna array module |
-
2018
- 2018-05-18 CN CN201810478218.6A patent/CN108767458A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090323783A1 (en) * | 2008-06-25 | 2009-12-31 | Motorola, Inc. | Calibration techniques for mimo wireless communication systems |
| CN102904654A (en) * | 2012-10-26 | 2013-01-30 | 南京捷希科技有限公司 | Ultra wide band small multi-channel calibrating network |
| CN203850435U (en) * | 2014-02-28 | 2014-09-24 | 深圳市京华信通信技术有限公司 | Multi-band-frequency 4G array antenna |
| CN105634627A (en) * | 2014-10-28 | 2016-06-01 | 中兴通讯股份有限公司 | Antenna array coupling calibration network device and method |
| CN204376904U (en) * | 2014-12-04 | 2015-06-03 | 中邮科通信技术股份有限公司 | A kind of calibration network device of smart antenna |
| CN106936521A (en) * | 2017-01-12 | 2017-07-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Compact aerial feeds calibration network |
| CN107482320A (en) * | 2017-07-31 | 2017-12-15 | 武汉虹信通信技术有限责任公司 | A kind of 5G large scale arrays antenna |
| CN107706544A (en) * | 2017-09-07 | 2018-02-16 | 广东通宇通讯股份有限公司 | Base station antenna and its antenna array module |
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Application publication date: 20181106 |
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| RJ01 | Rejection of invention patent application after publication |