CN102802253A - Device for controlling power stability of different peak-to-average ratio signals and different timeslot signals - Google Patents
Device for controlling power stability of different peak-to-average ratio signals and different timeslot signals Download PDFInfo
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- CN102802253A CN102802253A CN2012102468977A CN201210246897A CN102802253A CN 102802253 A CN102802253 A CN 102802253A CN 2012102468977 A CN2012102468977 A CN 2012102468977A CN 201210246897 A CN201210246897 A CN 201210246897A CN 102802253 A CN102802253 A CN 102802253A
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Abstract
The invention relates to a method and device for controlling power stability of different peak-to-average ratio signals and different timeslot signals in the technical field of communication. The device disclosed by the invention is characterized by comprising an analog loop used for realizing control on average power, a digital loop used for realizing control on power of the timeslot signals and a temperature sensor used for realizing a temperature detection function, wherein the analog loop is composed of a voltage-controlled attenuator, a power amplifier, a coupler, a power detector, a voltage comparator and a single chip microcomputer; and the digital loop is composed of a digital control attenuator, a power amplifier, a coupler, a power detector and a single chip microcomputer. By adopting the method and device disclosed by the invention, the power stability of different peak-to-average ratio signals and different timeslot signals, which is controlled by the power amplifier at different temperatures, is improved, the effect that the power amplifier stably outputs powers of different signals at different power grades is realized, and control on output power of the power amplifier is realized.
Description
Technical field
The present invention relates to a kind of device of controlling different peak-to-average force ratio signals and different time-gap signal power stability in the mobile communication technology field.
Background technology
The GSM modulation signal contained 8 full rate time slot signals in every year, and the emission of mobile station signal power is not continuous, only launch pulse sequence in the time slot of regulation; A burst sequence is exactly a string modulated carrier frequency data flow, occurs in the time slot, and a time slot duration is (576+12/13) us.A full-time crack signal contains 8 continuous single time slot signals, and the duration of a full-time crack signal is approximately 4.6ms (577us*8).
In practical application, not necessarily every carrier frequency GSM modulation signal all is the signal with full-time crack, only uses single time slot sometimes, uses half crack (4 time slots) sometimes, and in use used GSM signal does not wait to full-time crack from single time slot.Single time slot signal of identical size is the same with the size of full-time crack signal peak power; But the size of average power but differs 8-9dB, and the power output that in practical application, requires single time slot signal and multi-slot signal is (the peak power equal and opposite in direction) that is equal to size.When adopting analogue loop to realize the control of power amplifier output power; Can only realize control to the signal average power; Will cause the phenomenon of the big 8-9dB of power output control ratio full-time crack signal when having only single time slot signal to occur like this, can not satisfy actual application requirements.Adopt digital loop can realize control to the time slot signal power output; But numerical-control attenuator has stepping; General in the industry at present stepping is 0.5dB, real output will occur when adopting this numerical-control attenuator to realize power output control and occur greater than the phenomenon of 0.5dB at least than power controlling.And 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 the average power output reaches the nominal full power, the every increase of average power output 0.5dB; The linear index of amplifier worsens will be than comparatively fast; Will influence communication quality like this, and when the average power output is big, increase the power output of 0.5dB, equipment power dissipation can increase more; Cause the appearance of problems such as equipment linear index differential temperature degree height, 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 objective of the invention is to overcome the shortcoming of prior art; A kind of device of controlling different peak-to-average force ratio signals and different time-gap signal power stability is provided; Improve power amplifier and under different temperatures, controlled the power stability of different peak-to-average force ratio signals and different time-gap signal; Realized the power of the stable output of power amplifier unlike signal different capacity grade, realized control power amplifier output power.
The present invention solves the problems of the technologies described above through following technical scheme: the device of controlling different peak-to-average force ratio signals and different time-gap signal power stability; Its difference is: it comprises the analogue loop that is used to realize average power is controlled, is used to realize the digital loop that time slot signal power is controlled, the temperature sensor that is used to realize temperature detecting function that said analogue loop is made up of voltage-controlled attenuator, power amplifier, coupler, power detector, voltage comparator, single-chip microcomputer; Said digital loop is made up of numerical-control attenuator, power amplifier, coupler, power detector, single-chip microcomputer; Radiofrequency signal enters into voltage-controlled attenuator from signal input, and voltage-controlled attenuator carries out attenuation amplitude control according to the voltage that voltage comparator provides to radiofrequency signal, and the radiofrequency signal of process voltage-controlled attenuator outputs to numerical-control attenuator; Numerical-control attenuator carries out attenuation amplitude control according to the attenuation that single-chip microcomputer provides to radiofrequency signal, and the radiofrequency signal of process numerical-control attenuator outputs to power amplifier; Power amplifier amplifies radiofrequency signal, and the high-power RF signal after the amplification is mainly exported by signal output; Coupler is given power detector from the outlet coupling unit radiofrequency signal of power amplifier; Power detector converts radiofrequency signal to the analog DC voltage signal, and this d. c. voltage signal offers voltage comparator and single-chip microcomputer; The comparative voltage of voltage comparator is respectively from power detector and single-chip microcomputer; And compare according to the real-time condition of two-way voltage; To output to voltage-controlled attenuator through the voltage relatively simultaneously; Control the range value of voltage-controlled attenuator decay simultaneously, thereby realize control power amplifier output power; In the environment of high low temperature different temperatures; The real time temperature that temperature sensor will detect power amplifier offers single-chip microcomputer; Single-chip microcomputer is adjusted the voltage of voltage comparator according to detected temperatures, makes power amplifier power output in the different temperatures environment keep stable; Single-chip microcomputer will be got maximum from the time time variant voltage of power detector and handle; With (the Automatic Level Control of ALC in output power value that obtains and the single-chip microcomputer; Automatic electric-level control) power settings compares the attenuation that obtains numerical-control attenuator; Single-chip microcomputer is issued numerical-control attenuator with the pad value of this numerical-control attenuator, and numerical-control attenuator carries out attenuation amplitude control according to the attenuation that single-chip microcomputer provides to radiofrequency signal, 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 will detect power amplifier offers single-chip microcomputer; Single-chip microcomputer carries out the temperature compensation adjustment according to detected temperatures to the power detection value; Make power amplifier detected power output under different temperatures identical, make power amplifier power output in the different temperatures environment keep stable with real output.
Concrete, said single-chip microcomputer will be got maximum from the time time variant voltage of power detector and handle, and once get the peaked time greater than 4.6ms.
General principles of the present invention is: adopt voltage-controlled attenuator, and power amplifier, coupler, power detector, single-chip microcomputer, voltage comparator are built the analog closed-loop power control system; Adopt numerical-control attenuator, power amplifier, coupler, power detector, single-chip microcomputer are built the digital closed loop power control system; Carry out analogue loop ALC control earlier, carry out digital loop ALC control then; Analogue loop is realized the control to average power, and digital loop is realized the control to time slot signal power.Adopt Temperature Detector, the operating state of chip microcontroller monitor power amplifier; Realize that through control program automatic power output detects, temperature is inquired about automatically, power temperature compensation magnitude of voltage calls the output power stability that waits automation control raising power amplifier.
The contrast prior art, beneficial effect of the present invention is following:
1), realizes the stable control of different peak-to-average force ratio signals and different time-gap signal power;
2), improved the power stability of power amplifier under different temperatures;
3), realized the power of the stable output of power amplifier different capacity grade;
4), can be according to the actual requirements, simple realization is to the control of power amplifier output power;
5), workable.
Description of drawings
Fig. 1 is an embodiment of the invention closed loop power control system connection layout;
Among the figure:
10-voltage-controlled attenuator; 20-numerical-control attenuator; 30-power amplifier;
40-coupler; 50-power detector; 60-voltage comparator;
70-single-chip microcomputer; 80-temperature sensor;
A-signal input; B-signal output.
Embodiment
Combine accompanying drawing that the present invention is done further explain through embodiment below.
For improve power amplifier under the different temperatures environment, the power stability of different modulated signals, different time-gap signal, different peak-to-average force ratio signal, different carrier signal; The power stability deviation is less than 0.5dB when making power amplifier in the different temperatures environment, adopt different modulated signals, different time-gap signal, different peak-to-average force ratio signal, different carrier signal; The present invention adopts analogue loop and the common control appliance power output of digital loop; Come the average power output of control appliance accurately with analogue loop; Linear index under the assurance equipment nominal power; Realize control with digital loop, realize the control of power output under the different temperatures through the single-chip microcomputer temperature-compensating time slot signal power.
General steps of the present invention is following:
1), accomplishes the detection of power amplifier output power by coupler and power detector;
2), accomplish different peak-to-average force ratio signals and different time-gap Signal Processing by power detector and single-chip microcomputer;
3), accomplish the collection and the judgement of power amplifier working temperature by single-chip microcomputer and temperature sensor;
4), realize the control of power amplifier stability under the different temperatures by single-chip microcomputer or controller and voltage-controlled attenuator;
5), realize the control of power amplifier stability under the different temperatures by single-chip microcomputer or controller and numerical-control attenuator;
6), single-chip microcomputer or controller be the control terminal of accomplishing whole power control and temperature-compensating, accomplished the control of different peak-to-average force ratio signals and different time-gap signal power stability fine compensation under the different temperatures by single-chip microcomputer or controller.
As shown in Figure 1; The present invention controls the device of different peak-to-average force ratio signals and different time-gap signal power stability; It is characterized in that: it comprises the analogue loop that is used to realize average power is controlled, is used to realize the digital loop that time slot signal power is controlled, the temperature sensor 80 that is used to realize temperature detecting function that said analogue loop is made up of voltage-controlled attenuator 10, power amplifier 30, coupler 40, power detector 50, voltage comparator 60, single-chip microcomputer 70; Said digital loop is made up of numerical-control attenuator 20, power amplifier 30, coupler 40, power detector 50, single-chip microcomputer 70.
Concrete, its connected mode is: signal input A, voltage-controlled attenuator 10, numerical-control attenuator 20, power amplifier 30, coupler 40 and signal output B are connected successively; Coupler 40, power detector 50, voltage comparator 60 and voltage-controlled attenuator 10 are connected successively; Coupler 40, power detector 50, single-chip microcomputer 70 and numerical-control attenuator 20 are connected successively; Power amplifier 30, temperature sensor 80, single-chip microcomputer 70 connect successively.
Its operation principle is:
1. radiofrequency signal enters into voltage-controlled attenuator 10 from signal input A;
2. voltage-controlled attenuator 10 carries out attenuation amplitude control according to the voltage that voltage comparator 60 provides to radiofrequency signal, and the radiofrequency signal of process voltage-controlled attenuator 10 outputs to numerical-control attenuator 20;
3. numerical-control attenuator 20 carries out attenuation amplitude control according to the attenuation that single-chip microcomputer provides to radiofrequency signal, and the radiofrequency signal of process numerical-control attenuator 20 outputs to power amplifier 30;
4. 30 pairs of radiofrequency signals of power amplifier are amplified, and the high-power RF signal after the amplification is mainly exported by signal output B;
5. coupler 40 is given power detector 50 from the outlet coupling unit radiofrequency signal of power amplifier 30;
6. power detector 50 converts radiofrequency signal to the analog DC voltage signal, and this d. c. voltage signal offers voltage comparator 60 and single-chip microcomputer 70;
7. the comparative voltage of voltage comparator 60 is respectively from power detector 50 and single-chip microcomputer 70; And compare according to the real-time condition of two-way voltage; To output to voltage-controlled attenuator 10 through the voltage relatively simultaneously; Control the range value of voltage-controlled attenuator 10 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 80 will detect power amplifier 30 offers single-chip microcomputer 70; Single-chip microcomputer 70 is adjusted the voltage of voltage comparator 60 according to detected temperatures, makes power amplifier 30 power output in the different temperatures environment keep stable;
8. single-chip microcomputer 70 will be got the maximum processing from the time time variant voltage of power detector 50; Once get the peaked time greater than 4.6ms (letting it cover a full-time crack signal); ALC power settings in output power value that obtains and the single-chip microcomputer is compared the attenuation that obtains numerical-control attenuator
The detected real-time power output of the pad value=single-chip microcomputer of numerical-control attenuator-ALC power settings
Single-chip microcomputer 70 is issued numerical-control attenuator 20 with the pad value of this numerical-control attenuator, and numerical-control attenuator 20 carries out attenuation amplitude control according to the attenuation that single-chip microcomputer 70 provides to radiofrequency signal, thereby realizes the control to power amplifier 30 power outputs; In the environment of high low temperature different temperatures; The real time temperature that Temperature Detector 80 will detect power amplifier 30 offers single-chip microcomputer 70; Single-chip microcomputer 70 carries out the temperature compensation adjustment according to detected temperatures to the power detection value; Make power amplifier 30 detected power output under different temperatures identical, make power amplifier 30 power output in the different temperatures environment keep stable with real output.
Its functional block (structure and function thereof) is as follows:
1), voltage-controlled attenuator 10
Voltage-controlled attenuator 10 is selected circuit with controlled attenuation function or the device that includes but not limited to that voltage-controlled attenuator, Flow Control attenuator etc. are integrated or build for use.Be used to realize the radiofrequency signal attenuation function.
2), numerical-control attenuator 20
Numerical-control attenuator 20 is selected the numerical-control attenuator with certain stepping for use.Power detector 20.
3), power amplifier 30
4), coupler 40
5), power detector 50
6), voltage comparator 60
7), single-chip microcomputer 70
Single-chip microcomputer 70 is selected programming devices such as including but not limited to all kinds of single-chip microcomputers, FPGA for use.The automation controlled function that is used to the system that realizes.
8), temperature sensor 80
Above content is to combine concrete execution mode to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (2)
1. control the device of different peak-to-average force ratio signals and different time-gap signal power stability; It is characterized in that: it comprises the analogue loop that is used to realize average power is controlled, is used to realize the digital loop that time slot signal power is controlled, the temperature sensor (80) that is used to realize temperature detecting function that said analogue loop is made up of voltage-controlled attenuator (10), power amplifier (30), coupler (40), power detector (50), voltage comparator (60), single-chip microcomputer (70); Said digital loop is made up of numerical-control attenuator (20), power amplifier (30), coupler (40), power detector (50), single-chip microcomputer (70); Radiofrequency signal enters into voltage-controlled attenuator (10) from signal input (A); Voltage-controlled attenuator (10) carries out attenuation amplitude control according to the voltage that voltage comparator (60) provides to radiofrequency signal, and the radiofrequency signal of process voltage-controlled attenuator (10) outputs to numerical-control attenuator (20); Numerical-control attenuator (20) carries out attenuation amplitude control according to the attenuation that single-chip microcomputer provides to radiofrequency signal, and the radiofrequency signal of process numerical-control attenuator (20) outputs to power amplifier (30); Power amplifier (30) amplifies radiofrequency signal, and the high-power RF signal after the amplification is mainly exported by signal output (B); Coupler (40) is given power detector (50) from the outlet coupling unit radiofrequency signal of power amplifier (30); Power detector (50) converts radiofrequency signal to the analog DC voltage signal, and this d. c. voltage signal offers voltage comparator (60) and single-chip microcomputer (70); The comparative voltage of voltage comparator (60) is respectively from power detector (50) and single-chip microcomputer (70); And compare according to the real-time condition of two-way voltage; To output to voltage-controlled attenuator (10) through the voltage relatively simultaneously; Control the range value of voltage-controlled attenuator (10) decay simultaneously, thereby realize control power amplifier output power; In the environment of high low temperature different temperatures; The real time temperature that temperature sensor (80) will detect power amplifier (30) offers single-chip microcomputer (70); Single-chip microcomputer (70) is adjusted the voltage of voltage comparator (60) according to detected temperatures, makes power amplifier (30) power output in the different temperatures environment keep stable; Single-chip microcomputer (70) will be got maximum from the time time variant voltage of power detector (50) and handle; ALC power settings in output power value that obtains and the single-chip microcomputer (70) is compared the attenuation that obtains numerical-control attenuator; Single-chip microcomputer (70) is issued numerical-control attenuator (20) with the pad value of this numerical-control attenuator; Numerical-control attenuator (20) carries out attenuation amplitude control according to the attenuation that single-chip microcomputer (70) provides to radiofrequency signal, thereby realizes the control to power amplifier (30) power output; In the environment of high low temperature different temperatures; The real time temperature that Temperature Detector (80) will detect power amplifier (30) offers single-chip microcomputer (70); Single-chip microcomputer (70) carries out the temperature compensation adjustment according to detected temperatures to the power detection value; Make power amplifier (30) detected power output under different temperatures identical, make power amplifier (30) power output in the different temperatures environment keep stable with real output.
2. the device of different peak-to-average force ratio signals of control according to claim 1 and different time-gap signal power stability; It is characterized in that: said single-chip microcomputer (70) will be got maximum from the time time variant voltage of power detector (50) and handle, and once get the peaked time greater than 4.6ms.
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| CN201210246897.7A CN102802253B (en) | 2012-07-17 | 2012-07-17 | The device of the different peak-to-average force ratio signal of control and different time-gap signal power stability |
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| CN201210246897.7A CN102802253B (en) | 2012-07-17 | 2012-07-17 | The device of the different peak-to-average force ratio signal of control and different time-gap signal power stability |
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Cited By (5)
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| WO2015089739A1 (en) * | 2013-12-17 | 2015-06-25 | 华为终端有限公司 | Power control method and apparatus |
| CN105356931A (en) * | 2015-12-14 | 2016-02-24 | 天津光电通信技术有限公司 | Broadband signal attenuation control equipment and control method |
| 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 |
| CN107579712A (en) * | 2017-09-21 | 2018-01-12 | 天津光电通信技术有限公司 | A kind of circuit for optimizing power amplifier stability |
| CN108011593A (en) * | 2018-01-18 | 2018-05-08 | 北京元景科技有限公司 | A kind of stepping power amplifier for quantitatively adjusting |
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| CN102332874A (en) * | 2011-07-21 | 2012-01-25 | 武汉虹信通信技术有限责任公司 | Temperature compensation device for power amplifier and method for controlling power stability |
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| US20040095895A1 (en) * | 2001-03-14 | 2004-05-20 | Kai Barnes | Method for power detection of multicarrier signals, radio transmission unit and module for such a unit |
| CN101969687A (en) * | 2010-10-26 | 2011-02-09 | 三维通信股份有限公司 | Method for implementing digital GSM time slot ALC |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015089739A1 (en) * | 2013-12-17 | 2015-06-25 | 华为终端有限公司 | Power control method and apparatus |
| CN105356931A (en) * | 2015-12-14 | 2016-02-24 | 天津光电通信技术有限公司 | Broadband signal attenuation control equipment and control method |
| 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 |
| CN107579712A (en) * | 2017-09-21 | 2018-01-12 | 天津光电通信技术有限公司 | A kind of circuit for optimizing power amplifier stability |
| CN108011593A (en) * | 2018-01-18 | 2018-05-08 | 北京元景科技有限公司 | A kind of stepping power amplifier for quantitatively adjusting |
| CN108011593B (en) * | 2018-01-18 | 2023-10-31 | 北京元景科技有限公司 | Stepping power amplifier for quantitative adjustment |
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