CN107528552A - Power amplifier power supply circuit and mobile communication base station - Google Patents
Power amplifier power supply circuit and mobile communication base station Download PDFInfo
- Publication number
- CN107528552A CN107528552A CN201610450792.1A CN201610450792A CN107528552A CN 107528552 A CN107528552 A CN 107528552A CN 201610450792 A CN201610450792 A CN 201610450792A CN 107528552 A CN107528552 A CN 107528552A
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- China
- Prior art keywords
- power supply
- power
- power amplifier
- supply circuit
- tube
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- 238000010295 mobile communication Methods 0.000 title claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 40
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 229910002601 GaN Inorganic materials 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of power amplifier power supply circuit and mobile communication base station; belong to communication technical field; the power amplifier power supply circuit includes power tube, switch and the first power supply for providing shut-off voltage for the power tube; the grid of the power tube is connected by the switch with first power supply, a protective resistance of being connected between first power supply and the switch.When the gate short of power tube; the protective resistance of series connection then serves as load; avoid the direct shorted to earth of the first power supply and cause power supply to be overloaded; it is inclined so as to prevent the power supply of the first power supply to be drawn; rest channels being capable of normal work in guarantee system; avoid the power amplifier tube failure of one of passage in system and cause rest channels power tube can not the situation of normal work occur, improve the stability and reliability of system.The power amplifier power supply circuit of the embodiment of the present invention, effectively can play a protective role to multi-channel power amplifier, and simple in construction, and cost of implementation is low.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of power amplifier power supply circuit and mobile communication base station.
Background technology
5th generation mobile communication (5G) technology is driven by mobile Internet and Internet of Things, before possessing wide application
Scape.Extensive antenna technology is as one of wireless key technologies of 5G, multiple-input and multiple-output (Multiple-Input Multiple-
Out-put, MIMO) technology is widely applied in a 4 g system.In face of 5G in the side such as transmission rate and power system capacity
The performance challenges in face, the further increase of number of antennas will be the important directions that MIMO technology continues evolution.
At present, the modular design of the power amplifier of mobile communication base station, it is to use multi-channel power amplifier system.Multi-channel power amplifier system
Power amplifier power supply circuit as shown in figure 1, including the first power supply, second source, switch S and power tube PA (Power
Amplifier), power tube PA grid connects the first power supply and second source respectively by switching S, and the first power supply is power tube
PA provides shut-off voltage, and second source provides operating voltage for power tube PA.
When power tube PA is burned out and when failing, its grid would generally short circuit, and in multi-channel power amplifier system, each passage
It is the first power supply that power tube PA, which shares power supply, and when the power tube PA failures of one of passage, the first power supply will be straight
Connect shorted to earth and cause power supply to be overloaded, so that the power supply of the first power supply is drawn partially, and then cause the power amplifier of rest channels
Pipe PA can not normal work, have impact on the stability and reliability of system.
The content of the invention
In view of this, it is more to solve it is an object of the invention to provide a kind of power amplifier power supply circuit and mobile communication base station
The power amplifier tube failure of one of passage in passage power amplification system and cause rest channels power tube can not normal work skill
Art problem, improve the stability and reliability of system.
Technical scheme is as follows used by the present invention solves above-mentioned technical problem：
According to an aspect of the present invention, there is provided a kind of power amplifier power supply circuit, the power amplifier power supply circuit includes power amplifier
Pipe, switch and the first power supply for providing shut-off voltage for the power tube, the grid of the power tube pass through the switch
It is connected with first power supply, a protective resistance of being connected between first power supply and the switch.
Further, an electric capacity also in parallel between the protective resistance and the switch.
Further, the electric capacity is microfarad range electric capacity.
Further, the capacitance of the electric capacity between 1 microfarad between 10 microfarads.
Further, the protective resistance is kilo-ohm level resistance.
Further, the resistance of the protective resistance is between 1 kilo-ohm to 10 kilo-ohms.
Further, the voltage of first power supply is between -1V to -10V.
Further, in addition to it is used for the second source that operating voltage is provided for the power tube, the switch is hilted broadsword
Commutator, the grid of the power tube are connected by the single-pole double-throw switch (SPDT) with the second source.
Further, the second source is digital analog converter.
According to another aspect of the present invention, there is provided a kind of mobile communication base station, it includes power amplifier power supply circuit, the work(
Putting power supply circuit includes power tube, switch and the first power supply for providing shut-off voltage for the power tube, the power tube
Grid be connected by the switch with first power supply, connected between first power supply and the switch one protect it is electric
Resistance.
The power amplifier power supply circuit of the embodiment of the present invention, by being connected a protective resistance between the first power supply and switch, when
During the gate short of power tube, the protective resistance of series connection then serves as load, avoids the direct shorted to earth of the first power supply and causes to supply
Electricity overload, it is inclined so as to prevent the power supply of the first power supply to be drawn, in guarantee system rest channels can normal work, avoid and be
The power amplifier tube failure of one of passage in system and cause rest channels power tube can not normal work situation occur, improve
The stability and reliability of system.The power amplifier power supply circuit of the embodiment of the present invention, effectively can be played to multi-channel power amplifier
Protective effect, and it is simple in construction, cost of implementation is low.
Brief description of the drawings
Fig. 1 is the circuit diagram of power amplifier power supply circuit of the prior art；
Fig. 2 is the circuit diagram of the power amplifier power supply circuit of first embodiment of the invention；
Fig. 3 is the circuit diagram of the power amplifier power supply circuit of second embodiment of the invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are clearer, clear, tie below
Drawings and examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Referring to Fig. 2, the power amplifier power supply circuit of first embodiment of the invention is proposed, the power amplifier power supply circuit includes power tube
PA, switch S and the first power supply, power tube PA grid are connected by switching S with the first power supply.In the embodiment of the present invention, power amplifier
Pipe PA is transistor power amplifier, preferably gallium nitride (GaN, also known as wide band gap semiconducter) power tube PA, certainly, also may be used
To select other types of power tube PA as needed.In the embodiment of the present invention, the first power supply is used for the grid for power tube PA
Shut-off voltage is provided, alternatively, the voltage of the first power supply is between -1V to -10V, such as -8V, or -3V, -5V etc..
The power amplifier power supply circuit of the embodiment of the present invention, it is mainly used in the multichannel of shared power supply (such as the first power supply)
Power amplification system, such as the mobile communication base station of multi-channel power amplifier framework.This multi-channel power amplifier system, when the work(of one of passage
When putting pipe PA gate short, the power supply that will result in the first power supply is drawn partially, so as to influence the normal work of rest channels.Have
A protective resistance R in consideration of it, the embodiment of the present invention is connected between the first power supply and switch S, when power tube PA gate short
When, the protective resistance R of series connection then serves as load, avoids the direct shorted to earth of the first power supply and causes power supply to be overloaded, so as to prevent
The power supply of first power supply is drawn inclined, be ensure that the normal work of rest channels, is improved the stability and reliability of system.
Common, protective resistance R resistance is bigger, and the protective effect to the first power supply is stronger.In the embodiment of the present invention, protect
Protect resistance R and select kilo-ohm level resistance, protective resistance R resistance is preferably between 1 kilo-ohm to 10 kilo-ohms, such as from 1 kilo-ohm, 2
Kilo-ohm or 5 kilo-ohms of protective resistance.
Further, the power amplifier power supply circuit of the embodiment of the present invention also includes a second source, and switch S is preferably that hilted broadsword is double
Throw switch S, power tube PA grid are connected by single-pole double-throw switch (SPDT) S with second source so that power tube PA grid leads to
Cross single-pole double-throw switch (SPDT) the S changeable power supply of connection first or second source.In the embodiment of the present invention, it is work(that second source, which is used for,
The grid for putting pipe PA provides operating voltage, can select digital analog converter (Digital to analog converter, DAC),
It is of course also possible to other electronic devices are selected as needed.
So as to the power amplifier power supply circuit of the embodiment of the present invention, pass through the protection of series connection one electricity between the first power supply and switch S
R is hindered, when power tube PA gate short, the protective resistance R of series connection then serves as load, avoids the direct shorted to earth of the first power supply
And cause power supply to be overloaded, it is inclined so as to prevent the power supply of the first power supply to be drawn, in guarantee system rest channels can normal work,
Avoid the power amplifier tube failure of one of passage in system and cause rest channels power tube can not normal work situation
Occur, improve the stability and reliability of system.The power amplifier power supply circuit of the embodiment of the present invention, can be effectively to multichannel
Power amplifier plays a protective role, and simple in construction, and cost of implementation is low.
Referring to Fig. 3, the power amplifier power supply circuit of second embodiment of the invention, the difference of the present embodiment and first embodiment are proposed
It is an in parallel electric capacity C between protective resistance R and switch S.
Because time division duplex (Time Division Duplexing, TDD) power amplifier requires power tubes at different levels on each passage
(promote power tube in advance, promote power tube, final stage power amplifier pipe) all allows for realizing shut-off, and it is micro- that the turn-off time is typically smaller than 2.5
Second.After the series connection protective resistance R between the first power supply and switch S, the power-on and power-off sequential of power tube PA grids can be affected,
Usual protective resistance R resistance is bigger, then bigger by being influenceed, and when protective resistance R resistance exceedes threshold value, will cause
Power-on and power-off sequential is more than 2.5 microseconds, so as to cause the TDD sequential of power amplifier abnormal.Therefore, in the first embodiment, in order to ensure
The power-on and power-off sequential of power tube PA grids within 2.5 microseconds, it is necessary to protective resistance R resistance is limited within the specific limits,
But the protective resistance R bigger protective effect to the first power supply of resistance is stronger, therefore this will certainly weaken protective resistance R to
The protective effect of one power supply.
In order to solve the above problems, the present embodiment has done further improvement on the basis of first embodiment, in protection electricity
Electric capacity C in parallel between R and switch S is hindered, during by electric capacity C to improve power-on and power-off of the protective resistance R to power tube PA grids
The influence of sequence, ensure that the TDD sequential of power amplifier is normal.So as to increase protective resistance R, strengthen the protection to the first power supply and make
With.
In the embodiment of the present invention, electric capacity C selects microfarad range electric capacity, electric capacity C capacitance be preferably between 1 microfarad to 10 microfarads it
Between, the electric capacity such as from 1 microfarad, 2 microfarads or 5 microfarads.The selection of electric capacity C capacitances, may be referred to protective resistance R resistance, lead to
It is normal, protective resistance R resistance it is bigger, it is necessary to electric capacity C capacitance it is also bigger.
So as to which the present embodiment is protected by the one electric capacity C of parallel connection between protective resistance and switch S by electric capacity C to improve
Influences of the resistance R to the power-on and power-off sequential of power tube PA grids is protected, both ensure that the TDD sequential of power amplifier was normal, and enhanced guarantor again
Protect protective effects of the resistance R to the first power supply.
The present invention proposes a kind of mobile communication base station simultaneously, and the mobile communication base station is the movement of multi-channel power amplifier framework
Communication base station, it includes power amplifier power supply circuit, and power amplifier power supply includes power tube, switch S and for being provided for the power tube
The first power supply of voltage is turned off, the grid of the power tube is connected by the switch S with first power supply, first electricity
Connected between source and the switch S protective resistance.Power amplifier power supply circuit described in the present embodiment is above-mentioned in the present invention
Power amplifier power supply circuit involved by embodiment, will not be repeated here.
The mobile communication base station of the embodiment of the present invention, by using above-mentioned power amplifier power supply circuit, in the first power supply and switch
Between connect a protective resistance, when the gate short of power tube, the protective resistance of series connection then serves as load, avoids the first power supply
Direct shorted to earth and cause power supply to be overloaded, it is inclined so as to prevent the power supply of the first power supply to be drawn, ensure rest channels in base station
Can normal work, avoid the power amplifier tube failure of one of passage in base station and cause the power tube of rest channels can not be just
Situation about often working occurs, and improves the stability and reliability of base station.When particularly base station works in outfield, this design energy
Enough avoid channel failure from influenceing rest channels normal work, reduce base station frequency of maintenance, reduce later maintenance into
This.
It should be appreciated that it these are only the preferred embodiments of the present invention, it is impossible to therefore the scope of the claims of the limitation present invention,
Every equivalent structure made using description of the invention and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in
Other related technical areas, it is included within the scope of the present invention.
Claims (10)
1. a kind of power amplifier power supply circuit, including power tube, switch and the first electricity for providing shut-off voltage for the power tube
Source, the grid of the power tube are connected by the switch with first power supply, it is characterised in that first power supply and institute
State a protective resistance of being connected between switching.
2. power amplifier power supply circuit according to claim 1, it is characterised in that between the protective resistance and the switch also
An electric capacity in parallel.
3. power amplifier power supply circuit according to claim 2, it is characterised in that the electric capacity is microfarad range electric capacity.
4. power amplifier power supply circuit according to claim 3, it is characterised in that the capacitance of the electric capacity is between 1 microfarad to 10
Between microfarad.
5. according to the power amplifier power supply circuit described in claim any one of 1-4, it is characterised in that the protective resistance is kilo-ohm level
Resistance.
6. power amplifier power supply circuit according to claim 5, it is characterised in that the resistance of the protective resistance is between 1 kilo-ohm
To between 10 kilo-ohms.
7. according to the power amplifier power supply circuit described in claim any one of 1-4, it is characterised in that the voltage of first power supply is situated between
Between -1V to -10V.
8. according to the power amplifier power supply circuit described in claim any one of 1-4, it is characterised in that also include being used to be the power amplifier
Pipe provides the second source of operating voltage, and the switch is single-pole double-throw switch (SPDT), and the grid of the power tube passes through the hilted broadsword
Commutator is connected with the second source.
9. power amplifier power supply circuit according to claim 8, it is characterised in that the second source is digital analog converter.
10. a kind of mobile communication base station, it is characterised in that including the power amplifier power supply circuit as described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450792.1A CN107528552A (en) | 2016-06-21 | 2016-06-21 | Power amplifier power supply circuit and mobile communication base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450792.1A CN107528552A (en) | 2016-06-21 | 2016-06-21 | Power amplifier power supply circuit and mobile communication base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107528552A true CN107528552A (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610450792.1A Pending CN107528552A (en) | 2016-06-21 | 2016-06-21 | Power amplifier power supply circuit and mobile communication base station |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201167318Y (en) * | 2008-03-03 | 2008-12-17 | 中兴通讯股份有限公司 | Power amplifier switch control circuit for TDD system |
| CN103956979A (en) * | 2014-04-01 | 2014-07-30 | 京信通信技术(广州)有限公司 | Power supply control device for power amplifier tube and power-on and power-off control method thereof |
| CN204068873U (en) * | 2014-05-21 | 2014-12-31 | 京信通信系统（中国）有限公司 | Positive minus gate voltage power tube electric power supply control system and positive minus gate voltage power amplification system |
| CN104753507A (en) * | 2015-03-13 | 2015-07-01 | 金华江 | Delay line circuit |
| CN205304744U (en) * | 2015-12-30 | 2016-06-08 | 三维通信股份有限公司 | GaN power tube digit grid bias circuit |
-
2016
- 2016-06-21 CN CN201610450792.1A patent/CN107528552A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201167318Y (en) * | 2008-03-03 | 2008-12-17 | 中兴通讯股份有限公司 | Power amplifier switch control circuit for TDD system |
| CN103956979A (en) * | 2014-04-01 | 2014-07-30 | 京信通信技术(广州)有限公司 | Power supply control device for power amplifier tube and power-on and power-off control method thereof |
| CN204068873U (en) * | 2014-05-21 | 2014-12-31 | 京信通信系统（中国）有限公司 | Positive minus gate voltage power tube electric power supply control system and positive minus gate voltage power amplification system |
| CN104753507A (en) * | 2015-03-13 | 2015-07-01 | 金华江 | Delay line circuit |
| CN205304744U (en) * | 2015-12-30 | 2016-06-08 | 三维通信股份有限公司 | GaN power tube digit grid bias circuit |
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Application publication date: 20171229 |
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| RJ01 | Rejection of invention patent application after publication |