CN102332874A - Temperature compensation device for power amplifier and method for controlling power stability - Google Patents
Temperature compensation device for power amplifier and method for controlling power stability Download PDFInfo
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- CN102332874A CN102332874A CN201110204783A CN201110204783A CN102332874A CN 102332874 A CN102332874 A CN 102332874A CN 201110204783 A CN201110204783 A CN 201110204783A CN 201110204783 A CN201110204783 A CN 201110204783A CN 102332874 A CN102332874 A CN 102332874A
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Abstract
The invention discloses a temperature compensation device for a power amplifier and a method for controlling the power stability and relates to power amplifiers of a base station and a repeater in the technical field of mobile communications. The temperature compensation device for the power amplifier comprises a signal input port (A), a pressure control attenuator (60), a power amplifier (10), a coupler (70) and a signal output port (B) which are connected with one another sequentially; the coupler (70), a power detector (20), a voltage comparator (30) and the pressure control attenuator (60) are connected with one another sequentially; and the power amplifier (10), a temperature sensor (40), a singlechip (50) and the voltage comparator (30) are connected with one another sequentially. By the invention, the power stability of the power amplifier at different temperatures is improved, power at different power levels can be output stably by the power amplifier, the power output by the power amplifier can be controlled, and the operability is high.
Description
Technical field
The present invention relates to the power amplifier of base station and repeater in the mobile communication technology field, relate in particular to the method for a kind of power amplifier temperature compensation device and power controlling stability thereof.
Background technology
Along with the development of mechanics of communication, the power output that base station and repeater require is increasing, and this also requires the power output of corresponding power amplifier increasing.In powerful power amplifier; When power output reaches the nominal full power; The every increase of power output 1dB; The linear index of amplifier worsens will will influence communication quality like this than comparatively fast, therefore now in mobile communication base station and the repeater power amplifier design to the power amplifier output stability require increasingly high.But because device performance and precision under the environment of different temperatures can change to some extent; So just influenced the output stability of power amplifier under different temperatures; Therefore no matter be in base station or the repeater, must take useful measure, improve the output stability of power amplifier.
Summary of the invention
The object of the invention just is to overcome the shortcoming and defect that prior art exists, and the method for a kind of power amplifier temperature compensation device and power controlling stability thereof is provided.
The objective of the invention is to realize like this:
In order to improve the power stability of power amplifier under the different temperatures environment, the power stability deviation was less than 0.5dB when power amplifier was worked in low temperature or hot environment.The power control system that adopts relevant functional part to form a closed loop is realized the stable power of output of power amplifier, improves the stability and the reliability of power amplifier.
Adopt voltage-controlled attenuator, power amplifier, coupler, power detector, single-chip microcomputer and voltage ratio
Build closed loop power control system than device;
Adopt the operating state of Temperature Detector and chip microcontroller monitor power amplifier;
Coding realizes that temperature inquires about automatically, and power temperature compensation magnitude of voltage calls and waits automation control raising merit
The output power stability of rate amplifier.
Specifically,
1, power amplifier temperature compensation device
This device comprises power amplifier, power detector, voltage comparator, temperature sensor, single-chip microcomputer, voltage-controlled attenuator and coupler;
Signal input, voltage-controlled attenuator, power amplifier, coupler and signal output are connected successively;
Coupler, power detector, voltage comparator and voltage-controlled attenuator are connected successively;
Power amplifier, temperature sensor, single-chip microcomputer and voltage comparator are connected successively.
2, based on the method for the power controlling stability of power amplifier temperature compensation device
This method comprises the following steps:
1. the power output of power amplifier is accomplished the detection of power by coupler and power detector;
2. accomplish the collection and the judgement of power amplifier working temperature by single-chip microcomputer and temperature sensor;
3. realize the compensation of power amplifier stability under the different temperatures by single-chip microcomputer and voltage-controlled attenuator;
4. single-chip microcomputer is a control terminal of accomplishing whole temperature-compensating, is accomplished the control of stability fine compensation under the different temperatures by single-chip microcomputer.
The present invention compares institute with prior art and has advantage and good effect:
1. improved the power stability of power amplifier under different temperatures;
2. realized the power of the stable output of power amplifier different capacity grade;
3. can be according to the actual requirements, simple realization is to the control of power amplifier output power;
4. workable.
Description of drawings
Fig. 1 is the closed loop power control system connection layout.
Among the figure:
10-power amplifier; 20-power detector; 30-voltage comparator;
40-temperature sensor; 50-single-chip microcomputer; 60-voltage-controlled attenuator;
70-coupler; A-signal input; B-signal output.
Embodiment
Specify below in conjunction with accompanying drawing and embodiment:
One, power amplifier temperature compensation device
1, overall
Like Fig. 1, power amplifier temperature compensation device comprises power amplifier 10, power detector 20, voltage comparator 30, temperature sensor 40, single-chip microcomputer 50, voltage-controlled attenuator 60 and coupler 70;
Its annexation is:
Signal input A, voltage-controlled attenuator 60, power amplifier 10, coupler 70 and signal output B are connected successively;
Its operation principle is:
Radiofrequency signal enters into voltage-controlled attenuator 60 from signal input A;
Voltage-controlled attenuator 60 is decayed to radiofrequency signal according to the voltage that voltage comparator 30 provides, through voltage-controlled
The radiofrequency signal of attenuator 60 is input to power amplifier 10;
10 pairs of radiofrequency signals of power amplifier are amplified, and the high-power RF signal after the amplification is mainly defeated by signal
Outlet B output;
Voltage comparator 30;
The comparative voltage of voltage comparator 30 is respectively from power detector 20 and single-chip microcomputer 50, and according to two-way
The real-time condition of pressing compares, and will output to voltage-controlled attenuator 60 through the voltage relatively simultaneously, the pad value of control voltage-controlled attenuator 60, thus realize control to power amplifier output power;
In the environment of high low temperature different temperatures, Temperature Detector 40 will detect the real-time temperature of power amplifier 10
Degree offers single-chip microcomputer 50, and single-chip microcomputer 50 is adjusted the voltage of voltage comparator 30 according to detected temperatures, makes power amplifier 10 power output in the different temperatures environment keep stable;
Single-chip microcomputer 50 is realized the controlled function of whole system.
2, functional block
1) power amplifier 10
Realize the enlarging function of radiofrequency signal.
2) power detector 20
The circuit of building with radio-frequency signal detection function.
Realization becomes the analog DC voltage size to the measuring ability of radiofrequency signal with the radiofrequency signal size conversion.
3) voltage comparator 30
The voltage swing that comparison detection voltage and single-chip microcomputer provide.
4) temperature sensor 40
Realize temperature detecting function.
5) single-chip microcomputer 50
Single-chip microcomputer 50 is selected programming devices such as including but not limited to all kinds of single-chip microcomputers, FPGA for use.
The automation controlled function of realization system.
6) voltage-controlled attenuator 60
Voltage-controlled attenuator 60 is selected circuit with controlled attenuation function or the device that includes but not limited to that voltage-controlled attenuator, Flow Control attenuator, numerical-control attenuator etc. are integrated or build for use.
Realize the radiofrequency signal attenuation function.
7) coupler 70
Realize the coupling function of radiofrequency signal.
Two, the workflow of the method for power controlling stability
1. radiofrequency signal enters into voltage-controlled attenuator 60 from signal input A;
2. voltage-controlled attenuator 60 carries out the attenuation amplitude control according to the voltage that voltage comparator 30 provides to radiofrequency signal
System, the radiofrequency signal of process voltage-controlled attenuator 60 outputs to power amplifier 10;
3. 10 pairs of radiofrequency signals of power amplifier are amplified, and the high-power RF signal after the amplification is mainly by signal
Delivery outlet B output;
4. coupler 70 is given power detector 20 from the outlet coupling unit radiofrequency signal of power amplifier 10;
5. power detector 20 converts radiofrequency signal to the analog DC voltage signal, and this d. c. voltage signal provides
6. the comparative voltage of voltage comparator 30 is respectively from power detector 20 and single-chip microcomputer 50, and according to two-way
The real-time condition of voltage compares, and will output to voltage-controlled attenuator 60 through the voltage relatively simultaneously, controls the range value of voltage-controlled attenuator 60 decay simultaneously, thereby realizes the control to power amplifier output power; In the environment of high low temperature different temperatures; The real time temperature that Temperature Detector 40 will detect power amplifier 10 offers single-chip microcomputer 50; Single-chip microcomputer 50 is adjusted the voltage of voltage comparator 30 according to detected temperatures, makes power amplifier 10 power output in the different temperatures environment keep stable.
Claims (3)
1. power amplifier temperature compensation device is characterized in that:
Comprise power amplifier (10), power detector (20), voltage comparator (30), temperature sensor (40), single-chip microcomputer (50), voltage-controlled attenuator (60) and coupler (70);
Its annexation is:
Signal input (A), voltage-controlled attenuator (60), power amplifier (10), coupler (70) and signal output (B) are connected successively;
Coupler (70), power detector (20), voltage comparator (30) and voltage-controlled attenuator (60) are connected successively;
Power amplifier (10), temperature sensor (40), single-chip microcomputer (50) and voltage comparator (30) are connected successively.
2. the method based on the power controlling stability of the said power amplifier temperature compensation device of claim 1 is characterized in that this method comprises the following steps:
1. the power output of power amplifier is accomplished the detection of power by coupler and power detector;
2. accomplish the collection and the judgement of power amplifier working temperature by single-chip microcomputer and temperature sensor;
3. realize the compensation of power amplifier stability under the different temperatures by single-chip microcomputer and voltage-controlled attenuator;
4. single-chip microcomputer is a control terminal of accomplishing whole temperature-compensating, is accomplished the control of stability fine compensation under the different temperatures by single-chip microcomputer.
3. by the method for the described power controlling stability of claim 2, it is characterized in that workflow is:
1. radiofrequency signal enters into voltage-controlled attenuator (60) from signal input (A);
2. voltage-controlled attenuator (60) is decayed to radiofrequency signal according to the voltage that voltage comparator (30) provides
Amplitude control, the radiofrequency signal of process voltage-controlled attenuator (60) outputs to power amplifier (10);
3. power amplifier (10) amplifies radiofrequency signal, the high-power RF signal after the amplification mainly by
Signal output (B) output;
4. coupler (70) is given power detector from the outlet coupling unit radiofrequency signal of power amplifier (10)
（20）；
5. power detector (20) converts radiofrequency signal to the analog DC voltage signal, this d. c. voltage signal
Offer voltage comparator (30);
6. the comparative voltage of voltage comparator (30) is respectively from power detector (20) and single-chip microcomputer (50),
And compare according to the real-time condition of two-way voltage, will output to voltage-controlled attenuator (60) through the voltage relatively simultaneously, control the range value of voltage-controlled attenuator (60) decay simultaneously, thereby realize control power amplifier output power; In the environment of high low temperature different temperatures; The real time temperature that Temperature Detector (40) will detect power amplifier (10) offers single-chip microcomputer (50); Single-chip microcomputer (50) is adjusted the voltage of voltage comparator (30) according to detected temperatures, makes power amplifier (10) power output in the different temperatures environment keep stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204783A CN102332874A (en) | 2011-07-21 | 2011-07-21 | Temperature compensation device for power amplifier and method for controlling power stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204783A CN102332874A (en) | 2011-07-21 | 2011-07-21 | Temperature compensation device for power amplifier and method for controlling power stability |
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| CN102332874A true CN102332874A (en) | 2012-01-25 |
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| CN201110204783A Pending CN102332874A (en) | 2011-07-21 | 2011-07-21 | Temperature compensation device for power amplifier and method for controlling power stability |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106656062A (en) * | 2016-12-06 | 2017-05-10 | 南京华瓯电子科技有限公司 | High-precision automatic power control circuit with temperature compensation |
| CN106788303A (en) * | 2017-01-06 | 2017-05-31 | 厦门九华通信设备厂 | Agc circuit realizes the method and circuit of the constant gain voltage output of temperature self-adaptation |
| CN106788489A (en) * | 2016-12-16 | 2017-05-31 | 北京北广科技股份有限公司 | A kind of transmitter power temperature compensation means |
| CN110224679A (en) * | 2019-05-27 | 2019-09-10 | 山东航天电子技术研究所 | A kind of automatic gain control circuit with temperature-compensating |
| CN110768639A (en) * | 2019-11-07 | 2020-02-07 | 南京国睿安泰信科技股份有限公司 | Wide-temperature-range high-precision amplitude control method |
| CN112564695A (en) * | 2020-12-10 | 2021-03-26 | 北京北广科技股份有限公司 | Radio frequency power source low-level closed-loop amplitude control system based on temperature compensation |
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| CN1224281A (en) * | 1997-10-10 | 1999-07-28 | 摩托罗拉公司 | RF transmitter having temperature compensated output power level control circuit and method therefor |
| CN201015188Y (en) * | 2006-10-18 | 2008-01-30 | 深圳国人通信有限公司 | Linear power amplifier device |
| CN101394151A (en) * | 2008-10-14 | 2009-03-25 | 福建先创电子有限公司 | Automatic gain compensation and linear control method and device for power amplifier |
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2011
- 2011-07-21 CN CN201110204783A patent/CN102332874A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224281A (en) * | 1997-10-10 | 1999-07-28 | 摩托罗拉公司 | RF transmitter having temperature compensated output power level control circuit and method therefor |
| CN201015188Y (en) * | 2006-10-18 | 2008-01-30 | 深圳国人通信有限公司 | Linear power amplifier device |
| CN101394151A (en) * | 2008-10-14 | 2009-03-25 | 福建先创电子有限公司 | Automatic gain compensation and linear control method and device for power amplifier |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102802253B (en) * | 2012-07-17 | 2016-06-01 | 武汉虹信通信技术有限责任公司 | The device of the different peak-to-average force ratio signal of control and different time-gap signal power stability |
| CN106656062A (en) * | 2016-12-06 | 2017-05-10 | 南京华瓯电子科技有限公司 | High-precision automatic power control circuit with temperature compensation |
| CN106788489A (en) * | 2016-12-16 | 2017-05-31 | 北京北广科技股份有限公司 | A kind of transmitter power temperature compensation means |
| CN106788303A (en) * | 2017-01-06 | 2017-05-31 | 厦门九华通信设备厂 | Agc circuit realizes the method and circuit of the constant gain voltage output of temperature self-adaptation |
| CN106788303B (en) * | 2017-01-06 | 2019-11-12 | 厦门九华通信设备厂 | Agc circuit realizes the method and circuit of the constant gain voltage output of temperature self-adaptation |
| CN110224679A (en) * | 2019-05-27 | 2019-09-10 | 山东航天电子技术研究所 | A kind of automatic gain control circuit with temperature-compensating |
| CN110768639A (en) * | 2019-11-07 | 2020-02-07 | 南京国睿安泰信科技股份有限公司 | Wide-temperature-range high-precision amplitude control method |
| CN112564695A (en) * | 2020-12-10 | 2021-03-26 | 北京北广科技股份有限公司 | Radio frequency power source low-level closed-loop amplitude control system based on temperature compensation |
| CN112564695B (en) * | 2020-12-10 | 2023-09-19 | 北京北广科技股份有限公司 | Radio frequency power source low-level closed-loop amplitude control system based on temperature compensation |
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Application publication date: 20120125 |