CN105356052A - Antenna calibration device - Google Patents
Antenna calibration device Download PDFInfo
- Publication number
- CN105356052A CN105356052A CN201510824469.1A CN201510824469A CN105356052A CN 105356052 A CN105356052 A CN 105356052A CN 201510824469 A CN201510824469 A CN 201510824469A CN 105356052 A CN105356052 A CN 105356052A
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- CN
- China
- Prior art keywords
- coupling branch
- branch road
- power splitter
- antenna calibration
- directional coupler
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- 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.)
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Classifications
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- 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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention relates to the field of antenna calibration, and particularly relates to an antenna calibration device. The antenna calibration device comprises a power distribution network and directional coupler units, and is characterized in that the power distribution network is formed by three power dividers in a two-stage cascading mode, signal output ports of the second-stage power divider are connected with public ports of the first-stage power dividers respectively, and a public port of the second-stage power divider is used for being connected to base station calibration equipment; each directional coupler unit comprises a main coupling branch, a first coupling branch and a second coupling branch, the first coupling branch and the second coupling branch are arranged at two sides of the main coupling branch respectively, the head end of the main coupling branch is connected with the signal output port of the first-stage power divider, and the tail end of the main coupling branch is connected to a load resistor; and first ends of the first coupling branch and the second coupling branch are connected to base station equipment operating at the same frequency band, and the other ends of the first coupling branch and the second coupling branch are connected to antennas with the same frequency band. The antenna calibration device provided by the invention can reduce the number of power dividers, and realizes miniaturization of the calibration device and reduces the cost while ensuring the calibration accuracy.
Description
[technical field]
The present invention relates to antenna calibration field, particularly relate to a kind of antenna calibration equipment.
[background technology]
Smart antenna is a kind of multichannel antenna, various covering wave beams when utilizing each passage collaborative work needed for electromagnetic interference effect generation system, for ensureing the performance of wave beam, need utilize calibrating installation detect each passage intrinsic with time become error, and compensate accordingly in signal processing algorithm, therefore, calibrating installation is one of core component of smart antenna, to ensureing that systematic function plays very important effect.
At present, the circuit theory that what known intelligent antenna calibration device adopted is all as shown in Figure 1.Such as, in Chinese patent CN01120547, CN200610034285 and CN200820095749, calibrating installation consists of multistage combiner directional coupler and power splitter, coupler is all only have two coupling branch roads, its main coupling branch road connects power distributing network, and another coupling branch road connects antenna, and therefore this antenna calibration device needs the power splitter using a greater number, thus cause the size of calibrating installation bigger than normal, cost is higher.And the coupler that Chinese patent CN103856275A discloses, its first, second coupler branch road works in different frequency ranges, thus realizes the antenna calibration function of different frequency range; But because two branch roads have shared main coupling branch road, can produce between the signal of therefore different frequency range and interfere with each other, be unfavorable for the raising of calibration accuracy.
In addition, along with the scale construction of China 4G network, website terrace resource is more nervous; market is urgent all the more to the requirement of antenna miniaturization; realizing the miniaturization of calibrating installation, is the important guarantee of antenna miniaturization, this also calibrating installation of the prior art cannot realize.
Based on this, be necessary to provide a kind of and be conducive to antenna miniaturization and the antenna calibration equipment of calibration accuracy can be ensured.
[summary of the invention]
The object of the present invention is to provide a kind of antenna calibration equipment, the antenna calibration equipment realized by directional coupler of the present invention can reduce power splitter quantity, while guarantee calibration accuracy, achieves the miniaturization of calibrating installation.
For realizing this object, the present invention adopts following technical scheme:
A kind of antenna calibration equipment, comprises a power distributing network and four directional coupler unit; Described power distributing network is formed by three power splitter cascades, comprises two one-level power splitters and a secondary power splitter all with two signal output ports and a public port; The public port of one-level power splitter and the signal output port of secondary power splitter connect one to one; The public port of described secondary power splitter is for the identical base station calibration equipment of the antenna band connected with have this calibrating installation; Described each directional coupler unit includes main coupling branch road, be arranged on first of described main coupling branch road both sides the coupling branch road and the second coupling branch road, and described first coupling branch road is identical with the second coupling branch structure and work in same frequency range with the main branch road that is coupled; The head end of described main coupling branch road and the signal output port of one-level power splitter of four directional coupler unit connect one to one, and its end is connected with load resistance; Described first coupling branch road and second coupling branch road one end for being connected the base station equipment working in similar frequency bands, its other end has the antenna of similar frequency bands for connecting.
Preferably, described first coupling branch road and the second coupling Mirroring of tributary are arranged and the described main branch road both sides that are coupled.
Further, isolation resistance is in series with between inherent two signal output ports of described power splitter.
Preferably, three described power splitters are all microstrip line power splitter.
Preferably, four directional coupler unit are microstrip line directional coupler unit.
Compared with prior art, the present invention possesses following advantage: calibrating installation of the present invention is by being divided into three branch roads by directional coupler unit, and the mode by the main coupling branch road of coupler is directly connected with power splitter, traditional three-stage cascade is instead of by two-level concatenation, decrease the number of power splitter, achieve the miniaturization of antenna calibration equipment, and reduce the cost of calibrating installation.
In addition, two one-level power splitters of cascade end become specular to arrange about secondary power splitter, and four the directional coupler unit be connected with power distributing network also become specular to arrange, and such layout makes total compacter.
[accompanying drawing explanation]
Fig. 1 is the circuit theory diagrams of existing calibrating installation.
Fig. 2 is the circuit theory diagrams of inventive antenna calibrating installation.
Fig. 3 is the physical structure schematic diagram of inventive antenna calibrating installation.
[embodiment]
Be further described the present invention below in conjunction with accompanying drawing and exemplary embodiment, wherein identical in accompanying drawing label all refers to identical parts.In addition, if the detailed description of known technology is for illustrating that feature of the present invention is unnecessary, then omitted.
With reference to figure 2,3, the invention provides a kind of antenna calibration equipment 1000, comprise power distributing network 100 and multiple such as 4 directional coupler unit 200.
Described power distributing network 100 is formed by three power splitters 101,102 and 103 cascade, and described power splitter 101,102,103 is one-to-two power splitter, and namely each power splitter has a public port and two signal output ports.
Three described power splitters 101,102 and 103-adopt the mode of two-level concatenation to connect to form one point of four power distributing network.Namely, in three described power splitters 101,102 and 103, power splitter 101 and power splitter 103 are as one-level power splitter, and power splitter 102 is as secondary power splitter, and the public port of two one-level power splitters 101,103 and two signal output ports of secondary power splitter 102 connect one to one.The public port 300 of described secondary power splitter 102 is for connecting base station calibration equipment, and the Antenna Operation of this base station calibration equipment and this calibrating installation 1000 of employing is in similar frequency bands.
Described each directional coupler unit 200 includes main coupling branch road 203, is arranged on first of described main coupling branch road 203 left and right sides the coupling branch road 201, second coupling branch road 202.As a kind of preferred embodiment, described first coupling branch road 201 and the second coupling branch road 202 mirror image are arranged on the both sides of main coupling branch road 203.
The head end of described main coupling branch road 203 is connected with the signal output port of one-level power splitter 101,103, and its end connects a load resistance 203a to carry out impedance matching.
Described first coupling branch road 201 and second coupling branch road 202 one end (201a, 202a in figure) for being connected with base station equipment, its other end (201b, 202b in figure) is for connecting antenna, and described base station equipment and Antenna Operation are in similar frequency bands.Because described first coupling branch road 201 is identical with the second coupling branch road 202 structure and work in same frequency range with the main branch road 203 that is coupled, there is not alien frequencies interference, thus be conducive to the calibration accuracy improving this calibrating installation 1000.
The connected mode of power distributing network 100 and directional coupler unit 200 is as follows:
Two signal output ports 101a, 101b of power splitter 101 connect the main coupling branch road of different directional coupler unit respectively; Connect between two branch roads 101a, 101b an isolation resistance 101c in described power splitter 101 inherence, in order to isolate two branch roads, thus reduces influencing each other of each branch road.
In like manner, two signal output ports of power splitter 103 are connected respectively the main coupling branch road of two other directional coupler unit.
In the present embodiment, described power splitter is all microstrip line power splitter.
The power splitter 101 of the first order is arranged about secondary power splitter 102 one-tenth specular with 103, four coupler units be connected with power distributing network are also arranged about this secondary power splitter 102 one-tenth specular, and first of each directional coupler unit the coupling branch road becomes specular to arrange with the second coupling branch road about its main coupling branch road, and such layout makes the structure of whole calibrating installation compacter.
Fig. 3 is the physical structure schematic diagram of antenna calibration equipment 1000 of the present invention.In figure 3,4 described directional coupler unit 200 and 3 flattening type power splitters 101,102,103 are all laid on pcb board in micro-band mode, are conducive to the volume reducing this calibrating installation.
In sum, the present invention is by being divided into three branch roads by directional coupler unit, and by adopting the mode be directly connected with power splitter by the main coupling branch road of coupler, traditional three-stage cascade is instead of by two-level concatenation, decrease the number of power splitter, achieve the miniaturization of antenna calibration equipment, and reduce the cost of calibrating installation.
Although shown exemplary embodiments more of the present invention above, but it should be appreciated by those skilled in the art that, when not departing from principle of the present invention or spirit, can make a change these exemplary embodiments, scope of the present invention is by claim and equivalents thereof.
Claims (6)
1. an antenna calibration equipment, is characterized in that: comprise a power distributing network and four directional coupler unit;
Described power distributing network comprises two one-level power splitters and a secondary power splitter all with two signal output ports and a public port; The public port of one-level power splitter described in one of them is connected with one of them signal output port of described secondary power splitter, and the public port of one-level power splitter described in another is connected with another signal output port of described secondary power splitter;
Described each directional coupler unit includes main coupling branch road, be arranged on first of described main coupling branch road both sides the coupling branch road and the second coupling branch road, and described first coupling branch road is identical with the second coupling branch structure and work in same frequency range with the main branch road that is coupled;
The head end of the described main coupling branch road of four directional coupler unit and the signal output port of described two one-level power splitters connect one to one, and the end of described main coupling branch road is connected with load resistance.
2. antenna calibration equipment according to claim 1, is characterized in that, described first coupling branch road and the second coupling Mirroring of tributary are arranged and the described main branch road both sides that are coupled.
3. the antenna calibration equipment according to claims 1 or 2, is characterized in that: be in series with isolation resistance between each two signal output ports in described one-level power splitter and secondary power splitter.
4. the antenna calibration equipment according to claims 1 or 2, is characterized in that: three described power splitters are all microstrip line power splitter.
5. according to claims 1 or 2 or described antenna calibration equipment, it is characterized in that, four directional coupler unit are microstrip line directional coupler unit.
6. antenna calibration equipment according to claim 2, is characterized in that: described two one-level power splitters become mirror image to be arranged on described secondary power splitter both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824469.1A CN105356052A (en) | 2015-11-24 | 2015-11-24 | Antenna calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824469.1A CN105356052A (en) | 2015-11-24 | 2015-11-24 | Antenna calibration device |
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| CN105356052A true CN105356052A (en) | 2016-02-24 |
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| CN201510824469.1A Pending CN105356052A (en) | 2015-11-24 | 2015-11-24 | Antenna calibration device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229685A (en) * | 2016-09-22 | 2016-12-14 | 京信通信技术(广州)有限公司 | Wave-packet shaping network and dual polarization five beam antenna |
| CN108768549A (en) * | 2018-08-10 | 2018-11-06 | 昆山恩电开通信设备有限公司 | A kind of multiple antennas calibration network device applied to 5G communications |
| CN110278012A (en) * | 2019-06-30 | 2019-09-24 | 瑞声科技(新加坡)有限公司 | Antenna calibration network unit, antenna calibration network and mimo antenna |
| WO2019209903A1 (en) * | 2018-04-27 | 2019-10-31 | Commscope Technologies Llc | Calibration circuits for beam-forming antennas and related base station antennas |
| CN110416706A (en) * | 2018-04-27 | 2019-11-05 | 康普技术有限责任公司 | Calibration circuit for beam formed antenna and associated base station antenna |
| CN110557206A (en) * | 2018-05-31 | 2019-12-10 | 康普技术有限责任公司 | antenna calibration device |
| WO2021128325A1 (en) * | 2019-12-27 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Calibration unit and antenna |
| CN114899572A (en) * | 2022-06-14 | 2022-08-12 | 中航富士达科技股份有限公司 | Directional coupling calibration network |
| CN115084818A (en) * | 2022-06-23 | 2022-09-20 | 西安电子工程研究所 | Compact millimeter wave eight-path waveguide power synthesis network |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103856275A (en) * | 2013-12-11 | 2014-06-11 | 京信通信系统（广州）有限公司 | Antenna and calibration device thereof |
| 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 |
| CN205211943U (en) * | 2015-11-24 | 2016-05-04 | 京信通信技术(广州)有限公司 | Antenna calibrating device |
-
2015
- 2015-11-24 CN CN201510824469.1A patent/CN105356052A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103856275A (en) * | 2013-12-11 | 2014-06-11 | 京信通信系统（广州）有限公司 | Antenna and calibration device thereof |
| 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 |
| CN205211943U (en) * | 2015-11-24 | 2016-05-04 | 京信通信技术(广州)有限公司 | Antenna calibrating device |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229685A (en) * | 2016-09-22 | 2016-12-14 | 京信通信技术(广州)有限公司 | Wave-packet shaping network and dual polarization five beam antenna |
| US10812200B2 (en) | 2018-04-27 | 2020-10-20 | Commscope Technologies Llc | Calibration circuits for beam-forming antennas and related base station antennas |
| US11411661B2 (en) | 2018-04-27 | 2022-08-09 | Commscope Technologies Llc | Calibration circuits for beam-forming antennas and related base station antennas |
| WO2019209903A1 (en) * | 2018-04-27 | 2019-10-31 | Commscope Technologies Llc | Calibration circuits for beam-forming antennas and related base station antennas |
| CN110416706A (en) * | 2018-04-27 | 2019-11-05 | 康普技术有限责任公司 | Calibration circuit for beam formed antenna and associated base station antenna |
| CN110416706B (en) * | 2018-04-27 | 2023-07-11 | 康普技术有限责任公司 | Calibration circuit for beam forming antennas and associated base station antennas |
| CN110557206A (en) * | 2018-05-31 | 2019-12-10 | 康普技术有限责任公司 | antenna calibration device |
| CN110557206B (en) * | 2018-05-31 | 2022-09-06 | 康普技术有限责任公司 | Antenna calibration device |
| CN108768549A (en) * | 2018-08-10 | 2018-11-06 | 昆山恩电开通信设备有限公司 | A kind of multiple antennas calibration network device applied to 5G communications |
| CN108768549B (en) * | 2018-08-10 | 2023-09-19 | 昆山恩电开通信设备有限公司 | Multi-antenna calibration network device applied to 5G communication |
| CN110278012A (en) * | 2019-06-30 | 2019-09-24 | 瑞声科技(新加坡)有限公司 | Antenna calibration network unit, antenna calibration network and mimo antenna |
| WO2021128325A1 (en) * | 2019-12-27 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Calibration unit and antenna |
| CN114899572A (en) * | 2022-06-14 | 2022-08-12 | 中航富士达科技股份有限公司 | Directional coupling calibration network |
| CN114899572B (en) * | 2022-06-14 | 2023-12-01 | 中航富士达科技股份有限公司 | Directional coupling calibration network |
| CN115084818A (en) * | 2022-06-23 | 2022-09-20 | 西安电子工程研究所 | Compact millimeter wave eight-path waveguide power synthesis network |
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Application publication date: 20160224 |