CN107579712A - A kind of circuit for optimizing power amplifier stability - Google Patents
A kind of circuit for optimizing power amplifier stability Download PDFInfo
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- CN107579712A CN107579712A CN201710860107.7A CN201710860107A CN107579712A CN 107579712 A CN107579712 A CN 107579712A CN 201710860107 A CN201710860107 A CN 201710860107A CN 107579712 A CN107579712 A CN 107579712A
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- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims 3
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 150000001875 compounds Chemical group 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention provides a kind of circuit for optimizing power amplifier stability, including single-chip microcomputer, numerical-control attenuator, power amplifier unit, current detecting chip, power detector and temperature sensor, current detecting chip, power detector and the temperature sensor are connected with the A/D collection end signals of single-chip microcomputer, single-chip microcomputer also controls connection numerical-control attenuator, the input of the numerical-control attenuator is used to connect transmitting pumping signal input, output end connection power amplifier unit.The present invention has the advantage that：The stability of the power amplifier link of this programme is greatly improved, and the operating efficiency of RF power amplification pipe is also substantially increased while power amplifier link steady operation；It can avoid causing chip permanently to damage.
Description
Technical field
The invention belongs to wireless communication technology field, more particularly, to a kind of circuit for optimizing power amplifier stability.
Background technology
Radio-frequency power amplifier is the core of emitting portion in radio communication, and radio-frequency power amplifier is operated in stable
State is to launch the premise of carrier signal, and traditional method is the stability of boster but significantly by way of negative-feedback
Sacrifice the operating efficiency of power tube.
The content of the invention
In view of this, the present invention is directed to propose a kind of circuit for optimizing power amplifier stability, to ensure the stable output of chip
Power, avoid causing chip permanently to damage.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
It is a kind of optimize power amplifier stability circuit, including single-chip microcomputer, numerical-control attenuator, power amplifier unit, current detecting chip,
Power detector and temperature sensor, the A/D of current detecting chip, power detector and the temperature sensor with single-chip microcomputer
End signal connection is gathered, single-chip microcomputer also controls connection numerical-control attenuator, and the input of the numerical-control attenuator, which is used to connect, to be launched
Pumping signal inputs, output end connection power amplifier unit.
Further, drain terminal and the supply of leakage pressure of power amplifier unit are connected by choking-winding.
Further, the power detector connects the output end of power amplifier unit by directional coupler.
Further, the temperature sensor is arranged on the final stage power amplifier chip output structure of power amplifier unit.
Relative to prior art, the present invention has the advantage that：
(1) stability of the power amplifier link of this programme greatly improves, and is also carried significantly while power amplifier link steady operation
The high operating efficiency of RF power amplification pipe；
(2) it can avoid causing chip permanently to damage using foregoing circuit, chip stabilization can also be ensured well
Power output.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram for the circuit for optimizing power amplifier stability described in the embodiment of the present invention；
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of circuit for optimizing power amplifier stability, as shown in figure 1, including single-chip microcomputer, numerical-control attenuator, power amplifier unit, electricity
Detection chip, power detector and temperature sensor are flowed, power amplifier unit is amplifier, pushes away a grade amplifier in advance, final power amplification
The amplification link that device tandem compound forms；
Feeder ear is Lou pressed to the curent change of load end, the inspection of current detecting chip to detect by the current detecting chip
The analog value measured is sent to the A/D ends of single-chip microcomputer in real time, and single-chip microcomputer detects the value and judged in real time, if the fluctuating range of the value
Exceed preset range, then turn off the supply of leakage pressure by power switch control chip；
The present embodiment, the supply for leaking pressure are to be connected by way of choking-winding with the drain terminal of power amplifier unit, then well
Isolate dc source and radiofrequency signal, avoid transmission of the dc source to radio-frequency power.
The power that the power detector carries out power amplifier unit output end by directional coupler samples, and π types are passed through in sampling
Attenuator carries out power and adjusts to obtain suitable performance number；
The present embodiment power detector selects detector diode, and a DC level is obtained by detector diode detection,
The DC level has one-to-one linear relationship with now power output, and the A/D of single-chip microcomputer gathers the data and made a decision,
If it exceeds threshold value then enters attenuator adjustment programme, the size of input stimulus power is adjusted until stable output power；
The real time temperature of the final stage power amplifier chip output structure of power amplifier unit is detected by the temperature sensor, is come
Judge the temperature of now power amplifier unit, the A/D of single-chip microcomputer gathers the temperature data and made a decision, if to be given close to power amplifier unit
The fixed heatproof upper limit, the attenuator adjustment programme of single-chip microcomputer is likewise entered, adjust the attenuation of numerical-control attenuator, it is defeated so as to adjust
Enter exciting power size until temperature enters suitable scope.
The model PE4306 of the numerical-control attenuator, for controlling the decay of transmitting pumping signal；Directional coupler is
One section of microstrip coupled line by computer sim- ulation, monitoring and sampling for power amplifier unit output signal；The type of power detector
Number it is HSMS2822, is sampled for power signal.
In normal work, transmitting pumping signal is first fed to numerical-control attenuator, then carries out work(by power amplifier unit
Rate enhanced processing so that transmission power intensity increases in order to expand transmitting boundary.Pass through current detecting chip, power detector
With temperature sensor to electric leakage, the real-time detection of power and temperature, and adjust declining for numerical-control attenuator in real time according to testing result
Decrement, so as to adjust input stimulus watt level until temperature enters suitable scope.
It is premise that suitable quiescent point, which is set, fluctuation, fluctuation, the change of temperature of input stimulus power of leakage pressure power supply
Change and the instantaneous peak value self-oscillation that is likely to cause power amplifier chips of power output is so as to cause power amplifier chips to be damaged, because
These variables are carried out detection in real time and then worked by adjusting the attenuation of numerical-control attenuator come hold amplifier steady by this
It is fixed.It can avoid causing chip permanently to damage using foregoing circuit, the stable power output of chip can also be ensured well.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (4)
- A kind of 1. circuit for optimizing power amplifier stability, it is characterised in that：Including single-chip microcomputer, numerical-control attenuator, power amplifier unit, electric current Detection chip, power detector and temperature sensor,Current detecting chip, power detector and the temperature sensor are connected with the A/D collection end signals of single-chip microcomputer, monolithic Machine also controls connection numerical-control attenuator, and the input of the numerical-control attenuator is used to connect transmitting pumping signal input, output end Connect power amplifier unit.
- 2. the circuit of optimization power amplifier stability according to claim 1, it is characterised in that：Power amplifier is connected by choking-winding The drain terminal of unit and the supply of leakage pressure.
- 3. the circuit of optimization power amplifier stability according to claim 1, it is characterised in that：It is fixed that the power detector passes through To the output end of coupler connection power amplifier unit.
- 4. the circuit of optimization power amplifier stability according to claim 1, it is characterised in that：The temperature sensor is arranged on On the final stage power amplifier chip output structure of power amplifier unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860107.7A CN107579712A (en) | 2017-09-21 | 2017-09-21 | A kind of circuit for optimizing power amplifier stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860107.7A CN107579712A (en) | 2017-09-21 | 2017-09-21 | A kind of circuit for optimizing power amplifier stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107579712A true CN107579712A (en) | 2018-01-12 |
Family
ID=61035604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710860107.7A Pending CN107579712A (en) | 2017-09-21 | 2017-09-21 | A kind of circuit for optimizing power amplifier stability |
Country Status (1)
| Country | Link |
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| CN (1) | CN107579712A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109462382A (en) * | 2018-10-26 | 2019-03-12 | 京信通信系统（中国）有限公司 | Power amplifying system, power investigating method, device and base station equipment |
| CN111600551A (en) * | 2019-02-20 | 2020-08-28 | 天津光电通信技术有限公司 | Optimize power amplifier stability controller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049506A1 (en) * | 2007-10-19 | 2009-04-23 | Shenzhen Grentech Co., Ltd | Compensation method of radio frequency module performance and radio frequency module |
| US20120286866A1 (en) * | 2011-05-13 | 2012-11-15 | Ahmad Khanifar | Amplifier performance stabilization through preparatory phase |
| CN102802253A (en) * | 2012-07-17 | 2012-11-28 | 武汉虹信通信技术有限责任公司 | Device for controlling power stability of different peak-to-average ratio signals and different timeslot signals |
-
2017
- 2017-09-21 CN CN201710860107.7A patent/CN107579712A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049506A1 (en) * | 2007-10-19 | 2009-04-23 | Shenzhen Grentech Co., Ltd | Compensation method of radio frequency module performance and radio frequency module |
| US20120286866A1 (en) * | 2011-05-13 | 2012-11-15 | Ahmad Khanifar | Amplifier performance stabilization through preparatory phase |
| CN102802253A (en) * | 2012-07-17 | 2012-11-28 | 武汉虹信通信技术有限责任公司 | Device for controlling power stability of different peak-to-average ratio signals and different timeslot signals |
Non-Patent Citations (3)
| Title |
|---|
| 孙明超;俞建成;邵千钧;宁志强;郁力;: "基于E类功放质谱射频的电源设计与优化", 传感器与微系统, no. 11 * |
| 王建平;: "一种射频功率检测控制系统的设计方法", 电子测量技术, no. 08 * |
| 虞沧等: "《高频电子电路》", 30 September 2009, 吉林大学出版社, pages: 77 - 80 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109462382A (en) * | 2018-10-26 | 2019-03-12 | 京信通信系统（中国）有限公司 | Power amplifying system, power investigating method, device and base station equipment |
| CN109462382B (en) * | 2018-10-26 | 2022-07-29 | 京信网络系统股份有限公司 | Power amplification system, power measurement and control method, device and base station equipment |
| CN111600551A (en) * | 2019-02-20 | 2020-08-28 | 天津光电通信技术有限公司 | Optimize power amplifier stability controller |
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