CN207117635U - Antenna array calibration network - Google Patents
Antenna array calibration network Download PDFInfo
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- CN207117635U CN207117635U CN201720919139.5U CN201720919139U CN207117635U CN 207117635 U CN207117635 U CN 207117635U CN 201720919139 U CN201720919139 U CN 201720919139U CN 207117635 U CN207117635 U CN 207117635U
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- medium substrate
- layer medium
- antenna array
- modulator
- directional coupler
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Abstract
The utility model discloses a kind of antenna array calibration network, including：The first layer medium substrate and second layer medium substrate being stacked；Strip line circuit is provided between first layer medium substrate and second layer medium substrate, surface of the first layer medium substrate away from second layer medium substrate side is provided with microstrip line circuit, strip line circuit is identical with microstrip line number of, lines and is more than one, and a strip line circuit and a microstrip line connection form a calibration circuit；In each calibration circuit, strip line circuit includes a work(clutch and more than two directional couplers, microstrip line circuit includes being respectively connected between the coupled end of a directional coupler and an input of work(clutch with the more than two modulators of directional coupler quantity identical, each modulator.By above-mentioned embodiment, the calibration network can adjust each radiation port to the amplitude of calibration port, and amplitude adjusted scope is big, and degree of regulation is high.
Description
Technical field
It the utility model is related to mobile communication base station technical field, more particularly to a kind of antenna array calibration network.
Background technology
Fulminant growth is just being presented to the demand data of mobile radio communication in face of user, it is big in particular for real-time Transmission
Measure the wireless application of data, the network capacity of 1000 times of 4G LTE systems and the extensive mimo antenna of 1 millisecond of extremely low time delay
Array system is considered as the most potential transmission technologys of 5G.
The feeding network of extensive mimo antenna array includes power division network and calibration network.The effect of calibration network be by
The radiofrequency signal for inputing to each radiation port extracts a part, and the signal of extraction is monitored, each to determine to input to
Whether signal amplitude, the phase of individual radiation port are stablized.
Need to cascade by work(clutch to form a calibration port from the radiofrequency signal of each radiation port extraction, calibrate net
Respectively the amplitude maximum deviation requirement of radiation port to calibration port is less than 0.5dB in network.At present, the circuit of calibration network is by PCB
Circuit board is processed to be formed, between machining accuracy, each circuit line crosstalk all influence it is each radiation port to calibration port amplitude size.
, can not after calibration amplitude deviation is too big, can not make accurate judgement to the stability of signal, also, calibration network machines
The calibration amplitude of each passage is adjusted again.Therefore, the performance design to calibration network and debugging bring larger difficulty.
Utility model content
The utility model provides a kind of antenna array calibration network to solve above-mentioned technical problem, and the calibration network can adjust
Each radiation port is to the amplitude of calibration port, and amplitude adjusted scope is big, and degree of regulation is high.
In order to solve the above technical problems, the utility model provides a kind of antenna array calibration network, including：It is stacked
First layer medium substrate and second layer medium substrate；Band is provided between the first layer medium substrate and second layer medium substrate
Shape line circuit, surface of the first layer medium substrate away from second layer medium substrate side is provided with microstrip line circuit, described
Strip line circuit is identical with microstrip line number of, lines and is more than one, a strip line circuit and a microstrip line connection
Form a calibration circuit；In each calibration circuit, the strip line circuit includes a work(clutch and more than two fixed
To coupler, the microstrip line circuit includes and the more than two modulators of directional coupler quantity identical, each tune
Width device is respectively connected between the coupled end of a directional coupler and an input of work(clutch.
Further, the input of each modulator and the coupled end of a directional coupler pass through a metallization VIA
Conducting, output end are turned on an input of work(clutch by a metallization VIA.
Further, in each calibration circuit, the strip line circuit includes the first directional coupler and second
Directional coupler, the microstrip line circuit include the first modulator and the second modulator；First modulator is connected to first
Between the coupled end of directional coupler and the first input end of work(clutch, second modulator is connected to the second directional coupler
Coupled end and work(clutch the second input between.
Further, all in the calibration circuit, with the multiple work(clutch cascades of the calibration number of, lines identical simultaneously
Connection forms a total output end.
Further, surface of the second layer medium substrate away from the first layer medium substrate side is provided with metal
Ground；Each directional coupler is parallel coupled line directional coupler.
Further, each modulator is Amplitude Modulator with Phase Compensation.
Further, the Amplitude Modulator with Phase Compensation is that microstrip power divider cascades to be formed with micro-strip work(clutch, wherein described
The branch all the way of microstrip power divider is provided with phase shifter.
Further, the phase shifter is made up of the different micro-strip line segment of a plurality of length, the microstrip line of different length
The corresponding different phase of section, and then the amplitude of the different numerical value of micro-strip line segment adjustment by turning on different length.
Further, the dielectric constant range of the first layer medium substrate and second layer medium substrate be respectively 2.2~
10.2；The first layer medium substrate and the total thickness range of the second layer medium substrate are 0.76mm~2.70mm.
Further, the antenna array calibration network is extensive mimo antenna array calibration network.
Antenna array calibration network of the present utility model, has the advantages that：
By setting modulator in microstrip line circuit, directional coupler and work(clutch being set in strip line circuit, and
Each modulator is connected between the coupled end of a directional coupler and an input of work(clutch, can adjust each radiation port
To the amplitude of calibration port, and its amplitude adjusted scope is big, and degree of regulation is high；
Also, modulator uses microstrip line form, directional coupler and work(clutch use strip line form, are easy to collect
Into, and cost is low；
In addition, modulator, directional coupler and work(clutch are integrated on each layer medium substrate respectively, it is compact-sized.
Brief description of the drawings
Fig. 1 is the cross-sectional view of the utility model antenna array calibration network.
Fig. 2 is the structural representation of the circuit connection of antenna array calibration network shown in Fig. 1.
Fig. 3 is the structural representation of an embodiment of modulator in antenna array calibration network shown in Fig. 1.
Fig. 4 is modulator amplitude adjusted numerical value and phase number graph of relation in antenna array calibration network shown in Fig. 1.
Embodiment
The utility model is described in detail with embodiment below in conjunction with the accompanying drawings.
Referred to reference to Fig. 1 to Fig. 2, the utility model provides a kind of antenna array calibration network.The aerial array school
Pseudo-crystalline lattice includes：First layer medium substrate 1 and second layer medium substrate 2, the first layer medium substrate 1 and second layer medium substrate
2 are stacked.
Wherein, the dielectric constant range of the first layer medium substrate 1 and second layer medium substrate 2 can be respectively 2.2
~10.2；First layer medium substrate 1 and the total thickness range of second layer medium substrate 2 are 0.76mm~2.70mm.
For example, the sheet material of first layer medium substrate 1 and second layer medium substrate 2 can select Rogers
RO4730JXR.Preferably, the dielectric constant of first layer medium substrate 1 and second layer medium substrate 2 can be 3.0, first layer
The thickness of medium substrate 1 and second layer medium substrate 2 can be 0.78mm.
In one embodiment, strip line circuit is provided between first layer medium substrate 1 and second layer medium substrate 2
3, surface of the first layer medium substrate 1 away from the side of second layer medium substrate 2 is provided with microstrip line circuit 4.The He of strip line circuit 3
The quantity of microstrip line circuit 4 is identical and is more than one.Wherein, a strip line circuit 3 and a microstrip line circuit 4 connect
Form a calibration circuit.
Wherein, in each calibration circuit, strip line circuit 3 includes a work(clutch 33 and more than two orientation couplings
Clutch 31,32；Microstrip line circuit 4 includes and the more than two modulators of directional coupler quantity identical in strip line circuit 3
41、42.Wherein, each modulator 41（42）Each it is connected to one of directional coupler 31（32）Coupled end
311（321）With an input 331 of work(clutch 33（332）Between, that is, different modulators 41（42）It is connected to different
Directional coupler device 31（32）Coupled end 311（321）With the different inputs 331 of same work(clutch 33（332）Between.Compared with
Good, each modulator 41（42）Input 411（421）With one of directional coupler 31（32）Coupled end 311
（321）Turned on by a metallization VIA 6, output end 412（422）With an input 331 of work(clutch 33（332）Pass through
Another metallization VIA 6 turns on.
Specifically, first modulator 41 is connected to the of the coupled end 311 of the first directional coupler 31 and work(clutch 33
Between one input 331, second modulator 42 is connected to the of the coupled end 321 of the second directional coupler 32 and work(clutch 33
Between two inputs 332.
Further, the input 411 of the modulator 41 of coupled end 311 and first of first directional coupler 31 passes through one
Metallization VIA 61 turns on, and the input 421 of the modulator 42 of coupled end 321 and second of the second directional coupler 32 passes through a gold medal
Categoryization via 62 turns on.
Further, the output end 412 of the first modulator 41 passes through a metallization with the first input end 331 of work(clutch 33
Via 63 turns on；The output end 422 of second modulator 42 is led with the input 332 of work(clutch 33 second by a metallization VIA 64
It is logical.
In a preferred embodiment, surface of the second layer medium substrate 2 away from the side of first layer medium substrate 1 is provided with gold
Possession 5.The metal 5 setting can substitute metallic reflection plate in conventional antenna array, reduce aerial array parts
Quantity, and greatly reduce the volume and weight of aerial array, while ensure that electric property is reliable.
In one embodiment, when strip line circuit 3 and the respectively two or more, and accordingly connecting of microstrip line circuit 4
And when forming more than two calibration circuits, in all circuit is calibrated, with calibrating the multiple work(clutchs 33 of number of, lines identical
Cascade and connect to form a total output end 333 to be used as calibration port.
Preferably, each directional coupler 31,32 can be parallel coupled line directional coupler.
In a preferred embodiment, each modulator 41,42 can be Amplitude Modulator with Phase Compensation, using phase compensation micro-strip
Modulator, amplitude size, amplitude adjusted mode simple possible, adjustable range, regulation essence can be adjusted by adjustment phase place difference
Degree is higher.
Specifically, as shown in figure 3, the Amplitude Modulator with Phase Compensation cascades for microstrip power divider 413 with micro-strip work(clutch 414
Being formed, the microstrip power divider 413 can be one-to-two power splitter, and the micro-strip work(clutch 414 can be two-in-one work(clutch 33, its
In, the branch all the way of microstrip power divider 413 is provided with phase shifter 415.Adjusted as phase compensation the branch side of microstrip power divider 413
The input of width device, the output end of the combining side of micro-strip work(clutch 414 as Amplitude Modulator with Phase Compensation.
Wherein, the phase shifter 415 can be generally made up of the different micro-strip line segment of a plurality of length, the microstrip line of different length
The corresponding different phase of section, and then the amplitude of the different numerical value of micro-strip line segment adjustment by turning on different length.During actual use,
A conducting wherein micro-strip line segment as needed.
For example, phase shifter 415 can be made up of the different micro-strip line segment of five length, according to length from short to long
Mode sequentially turns on each micro-strip line segment, and phase adjusted is followed successively by 10 °, 15 °, 20 °, 25 °, 30 °, and corresponding amplitude adjusted is followed successively by
0.3dB、0.45dB、0.65dB、0.86dB、1.15dB.Certainly, in other embodiments, can be arranged as required to it is more or
The micro-strip line segment of less different length, certainly, the length of micro-strip line segment can also be configured different to realize as needed
Phase adjusted, and then realize different amplitude adjusteds.
Referring to Fig. 4, compensate modulator amplitude adjusted numerical value and phase number graph of relation for Such phase.Abscissa
For frequency, frequency range 2.575GHz~2.635GHz；Ordinate is amplitude adjusted amount；When 10 ° of phase adjusted, 15 °, 20 °,
25 °, 30 °, amplitude adjusted 0.3dB, 0.45dB, 0.65dB, 0.86dB, 1.15dB.
In above-described embodiment, antenna array calibration network can with and preferably extensive mimo antenna array calibration network.
The utility model additionally provides a kind of aerial array, and the aerial array is included described in any one embodiment as described above
Antenna array calibration network.
Aerial array and antenna array calibration network of the present utility model, has the advantages that：
By setting modulator 41,42, the setting directional coupler 31,32 in strip line circuit 3 in microstrip line circuit 4
With work(clutch 33, and by each modulator 41（42）It is connected to a directional coupler 31（32）Coupled end 311（321）Closed with work(
One input 331 of device 33（332）Between, the amplitude of adjustable each radiation port to calibration port, and its amplitude adjusted scope
Greatly, degree of regulation is high；
Also, modulator 41,42 uses microstrip line form, directional coupler 31,32 and work(clutch 33 linear using banding
Formula, it is easy to integrate, and cost is low；
In addition, modulator 41,42, directional coupler 31,32 and work(clutch 33 are integrated in each layer medium substrate 1,2 respectively
On, it is compact-sized.
Embodiment of the present utility model is these are only, not thereby limits the scope of the claims of the present utility model, every profit
The equivalent structure or equivalent flow conversion made with the utility model specification and accompanying drawing content, or directly or indirectly it is used in it
The technical field of his correlation, is similarly included in scope of patent protection of the present utility model.
Claims (10)
- A kind of 1. antenna array calibration network, it is characterised in that including：The first layer medium substrate and second layer medium substrate being stacked；Strip line circuit, the first layer medium substrate are provided between the first layer medium substrate and second layer medium substrate Surface away from second layer medium substrate side is provided with microstrip line circuit, strip line circuit and microstrip line the number of, lines phase Together and it is more than one, a strip line circuit and a microstrip line connection form a calibration circuit；In each calibration circuit, the strip line circuit includes a work(clutch and more than two directional couplers, institute Stating microstrip line circuit includes each connecting with the more than two modulators of directional coupler quantity identical, each modulator Between the coupled end of a directional coupler and an input of work(clutch.
- 2. antenna array calibration network according to claim 1, it is characterised in that：The input of each modulator is turned on the coupled end of a directional coupler by a metallization VIA, output end with One input of work(clutch is turned on by a metallization VIA.
- 3. antenna array calibration network according to claim 1, it is characterised in that：In each calibration circuit, the strip line circuit includes the first directional coupler and the second directional coupler, institute Stating microstrip line circuit includes the first modulator and the second modulator；First modulator is connected to the coupling of the first directional coupler Close between end and the first input end of work(clutch, second modulator is connected to the coupled end of the second directional coupler and work(closes Between second input of device.
- 4. antenna array calibration network according to claim 1, it is characterised in that：All in the calibration circuit, cascade and be connected to form one always with the calibration multiple work(clutchs of number of, lines identical Output end.
- 5. antenna array calibration network according to claim 1, it is characterised in that：Surface of the second layer medium substrate away from the first layer medium substrate side is with being provided with metal；Each directional coupler is parallel coupled line directional coupler.
- 6. antenna array calibration network according to claim 1, it is characterised in that：Each modulator is Amplitude Modulator with Phase Compensation.
- 7. antenna array calibration network according to claim 6, it is characterised in that：The Amplitude Modulator with Phase Compensation is that microstrip power divider cascades to be formed with micro-strip work(clutch, wherein the one of the microstrip power divider Road branch is provided with phase shifter.
- 8. antenna array calibration network according to claim 7, it is characterised in that：The phase shifter is made up of the different micro-strip line segment of a plurality of length, and the micro-strip line segment of different length corresponds to different phases Position, and then the amplitude of the different numerical value of micro-strip line segment adjustment by turning on different length.
- 9. antenna array calibration network according to claim 1, it is characterised in that：The dielectric constant range of the first layer medium substrate and second layer medium substrate is respectively 2.2~10.2；Described first Layer medium substrate and the total thickness range of the second layer medium substrate are 0.76mm~2.70mm.
- 10. antenna array calibration network according to claim 1, it is characterised in that：The antenna array calibration network is extensive mimo antenna array calibration network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720919139.5U CN207117635U (en) | 2017-07-27 | 2017-07-27 | Antenna array calibration network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720919139.5U CN207117635U (en) | 2017-07-27 | 2017-07-27 | Antenna array calibration network |
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| CN207117635U true CN207117635U (en) | 2018-03-16 |
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| CN201720919139.5U Active CN207117635U (en) | 2017-07-27 | 2017-07-27 | Antenna array calibration network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342827A (en) * | 2017-07-27 | 2017-11-10 | 广东通宇通讯股份有限公司 | Antenna array calibration network |
| CN109600176A (en) * | 2018-12-29 | 2019-04-09 | 京信通信技术(广州)有限公司 | Signal shunt circuit and calibration network |
| CN110198172A (en) * | 2019-07-05 | 2019-09-03 | 深圳市深大唯同科技有限公司 | A kind of calibration network and antenna for base station of array antenna |
-
2017
- 2017-07-27 CN CN201720919139.5U patent/CN207117635U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342827A (en) * | 2017-07-27 | 2017-11-10 | 广东通宇通讯股份有限公司 | Antenna array calibration network |
| CN107342827B (en) * | 2017-07-27 | 2023-06-23 | 广东通宇通讯股份有限公司 | Antenna array calibration network |
| CN109600176A (en) * | 2018-12-29 | 2019-04-09 | 京信通信技术(广州)有限公司 | Signal shunt circuit and calibration network |
| CN110198172A (en) * | 2019-07-05 | 2019-09-03 | 深圳市深大唯同科技有限公司 | A kind of calibration network and antenna for base station of array antenna |
| CN110198172B (en) * | 2019-07-05 | 2024-05-24 | 中天宽带技术有限公司 | Calibration network of array antenna and base station antenna |
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