CN102802253B - The device of the different peak-to-average force ratio signal of control and different time-gap signal power stability - Google Patents
The device of the different peak-to-average force ratio signal of control and different time-gap signal power stability Download PDFInfo
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- CN102802253B CN102802253B CN201210246897.7A CN201210246897A CN102802253B CN 102802253 B CN102802253 B CN 102802253B CN 201210246897 A CN201210246897 A CN 201210246897A CN 102802253 B CN102802253 B CN 102802253B
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Abstract
The present invention relates to a kind of method and the device controlling different peak-to-average force ratio signal and different time-gap signal power stability in mobile communication technical field, its difference is: it comprise the analogue loop for realizing average power being controlled, for realize being controlled by time slot signal power digital loop, for realizing the temperature sensor of temperature detecting function, described analogue loop is made up of voltage controlled attenuator, power amplifier, coupling mechanism, power detection device, voltage comparator, micro-chip; Described digital loop is made up of numerical-control attenuator, power amplifier, coupling mechanism, power detection device, micro-chip. Invention increases the power stability that power amplifier controls different peak-to-average force ratio signal and different time-gap signal at different temperatures, achieve power amplifier and stablize the power exporting different signal different capacity grades, it is achieved that to the control of power amplifier output power.
Description
Technical field
The present invention relates to a kind of device controlling different peak-to-average force ratio signal and different time-gap signal power stability in mobile communication technical field.
Background technology
GSM modulation signal often carries containing 8 full rate time slot signals, and the transmitting of mobile station signal power is not continuous print, only specify time gap in launch pulse sequence; A burst pulse sequence is exactly a string carrier frequency data stream modulated, and when occurring in one in gap, a time-slot duration is (576+12/13) us. A full time slot signal is containing 8 continuous print list time slot signals, and the time length of a full time slot signal is approximately 4.6ms(577us*8).
In actual applications, not necessarily every carrier frequency GSM modulation signal is all the signal by full-time gap, and sometimes only by gap time single, sometimes with gap when half (when 4 gap), in use GSM signal used is from gap during list to full-time gap not etc. Single time slot signal of identical size is the same with the size of full-time gap signal peak power, but the size of average power but differs 8-9dB, require that the output rating of single time slot signal and many time slot signals is equivalent size (peak power size is equal) in actual applications. When adopting the control that analogue loop realizes power amplifier output power, the control to signal average power can only be realized, the phenomenon of output power 8-9dB bigger than full time slot signal when only having single time slot signal will be caused like this to occur, actual application requirement can not be met. Adopt digital loop can realize the control to time slot signal output rating, but numerical-control attenuator has stepping, general stepping is 0.5dB in the industry at present, just there will be the phenomenon appearance that real output is at least greater than 0.5dB than control power when adopting this numerical-control attenuator to realize output power. And the output rating that the development along with communication technology, base station and repeater require is increasing, this also requires that the output rating of corresponding power amplifier is increasing. In high-power power amplifier, when average output rating reaches nominal full power, average output rating often increases 0.5dB, the linear index of amplifier worsens will than comparatively fast, will affecting communication quality like this, and increase the power stage of 0.5dB when average output rating is bigger, equipment power consumption can increase more, causing the appearance of the problems such as equipment linear index differential temperature degree height, therefore now requirement to power amplifier output stability is more and more higher in mobile communication base station and repeater power amplifier design. But owing to device performance and precision under the environment of differing temps can change to some extent, so just have impact on power amplifier output stability at different temperatures, therefore it is no matter in base station or repeater, it is necessary to take useful measure, it is to increase the output stability of power amplifier.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, a kind of device controlling different peak-to-average force ratio signal and different time-gap signal power stability is provided, improve the power stability that power amplifier controls different peak-to-average force ratio signal and different time-gap signal at different temperatures, achieve power amplifier and stablize the power exporting different signal different capacity grades, it is achieved that to the control of power amplifier output power.
The present invention solves the problems of the technologies described above by the following technical programs: the device of the different peak-to-average force ratio signal of control and different time-gap signal power stability, its difference is: it comprise the analogue loop for realizing average power being controlled, for realize being controlled by time slot signal power digital loop, for realizing the temperature sensor of temperature detecting function, described analogue loop is made up of voltage controlled attenuator, power amplifier, coupling mechanism, power detection device, voltage comparator, micro-chip; Described digital loop is made up of numerical-control attenuator, power amplifier, coupling mechanism, power detection device, micro-chip; Radiofrequency signal enters into voltage controlled attenuator from signal input, and the voltage radio frequency signal that voltage controlled attenuator provides according to voltage comparator carries out attenuation amplitude control, and the radiofrequency signal through voltage controlled attenuator outputs to numerical-control attenuator; The decrement radio frequency signal that numerical-control attenuator provides according to micro-chip carries out attenuation amplitude control, and the radiofrequency signal through numerical-control attenuator outputs to power amplifier; Power amplifier radio frequency signal amplifies, and the high-power RF signal after amplification exports primarily of signal output; Coupling mechanism is coupled part radiofrequency signal to power detection device from the outlet of power amplifier; Radiofrequency signal is converted to analog DC voltage signal by power detection device, and this d. c. voltage signal is supplied to voltage comparator and micro-chip; The comparison voltage of voltage comparator is respectively from power detection device and micro-chip, and the real-time condition according to two-way voltage compares, voltage after comparing is outputted to voltage controlled attenuator simultaneously, with the range value of control voltage controlled attenuator decay, thus realize the control to power amplifier output power; In the environment of high/low temperature differing temps, real time temperature power amplifier being detected is supplied to micro-chip by temperature sensor, the voltage of voltage comparator is adjusted by micro-chip according to detected temperatures, makes power amplifier output rating in differing temps environment keep stable; Time time variant voltage from power detection device is carried out getting maximum value process by micro-chip, by ALC(AutomaticLevelControl in the output power value that obtains and micro-chip, auto level control) power settings compares the decrement obtaining numerical-control attenuator, the pad value of this numerical-control attenuator is issued numerical-control attenuator by micro-chip, the decrement radio frequency signal that numerical-control attenuator provides according to micro-chip carries out attenuation amplitude control, thus realizes the control to power amplifier output power; In the environment of high/low temperature differing temps, real time temperature power amplifier being detected is supplied to micro-chip by temperature detector, power detection value is carried out temperature compensation adjustment according to detected temperatures by micro-chip, the output rating that power amplifier is detected at different temperatures is identical with real output, makes power amplifier output rating in differing temps environment keep stable.
Concrete, the time time variant voltage from power detection device is carried out getting maximum value process by described micro-chip, and the time once getting maximum value is greater than 4.6ms.
General principles of the present invention is: adopting voltage controlled attenuator, power amplifier, coupling mechanism, power detection device, micro-chip, voltage comparator builds analog closed-loop power Controlling System; Adopting numerical-control attenuator, power amplifier, coupling mechanism, power detection device, digital closed loop power Controlling System built by micro-chip; First carry out analogue loop ALC control, then carry out digital loop ALC control; Analogue loop realizes the control to average power, and digital loop realizes the control to time slot signal power. Adopt temperature detector, the working order of chip microcontroller monitor power amplifier; By sequence of control realize automatic output power detection, temperature Automatic inquirying, power temperature compensation magnitude of voltage call wait Automated condtrol raising power amplifier stable output power degree.
Contrast prior art, the useful effect of the present invention is as follows:
1) stability contorting of different peak-to-average force ratio signal and different time-gap signal power, is realized;
2), improve power amplifier power stability at different temperatures;
3), achieve power amplifier and stablize the power exporting different capacity grade;
4), can according to actual demand, simple realization is to the control of power amplifier output power;
5), workable.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention closed loop power control system interface chart;
In figure:
10 voltage controlled attenuators; 20 numerical-control attenuators; 30 power amplifiers;
40 coupling mechanisms; 50 power detection devices; 60 voltage comparators;
70 micro-chips; 80 temperature sensors;
A signal input; B signal output.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
In order to improve power amplifier under differing temps environment, different modulated signals, different time-gap signal, different peak-to-average force ratio signal, the power stability of different carrier signal, power amplifier is made to adopt different modulated signals in differing temps environment, different time-gap signal, different peak-to-average force ratio signal, during different carrier signal, power stability deviation is less than 0.5dB, the present invention adopts analogue loop and digital loop co-controlling equipment output rating, the average output rating of operating device accurately is carried out with analogue loop, linear index under guarantee equipment nominal power, the control to time slot signal power is realized with digital loop, the control of output rating under differing temps is realized by micro-chip temperature compensation.
General steps of the present invention is as follows:
1) detection of power amplifier output power, is completed by coupling mechanism and power detection device;
2) process of different peak-to-average force ratio signal and different time-gap signal, is completed by power detection device and micro-chip;
3) collection and the judgement of power amplifier working temperature, is completed by micro-chip and temperature sensor;
4) control of power amplifier stability under differing temps, is realized by micro-chip or controller and voltage controlled attenuator;
5) control of power amplifier stability under differing temps, is realized by micro-chip or controller and numerical-control attenuator;
6), micro-chip or controller be the control terminal of the control of whole power and temperature compensation, the control of different peak-to-average force ratio signal and different time-gap signal power stability fine compensation under completing differing temps by micro-chip or controller.
As shown in Figure 1, the present invention controls the device of different peak-to-average force ratio signal and different time-gap signal power stability, it is characterized in that: it comprise the analogue loop for realizing average power being controlled, for realize being controlled by time slot signal power digital loop, for realizing the temperature sensor 80 of temperature detecting function, described analogue loop is made up of voltage controlled attenuator 10, power amplifier 30, coupling mechanism 40, power detection device 50, voltage comparator 60, micro-chip 70; Described digital loop is made up of numerical-control attenuator 20, power amplifier 30, coupling mechanism 40, power detection device 50, micro-chip 70.
Concrete, its mode of connection is: signal input A, voltage controlled attenuator 10, numerical-control attenuator 20, power amplifier 30, coupling mechanism 40 and signal output B connect successively; Coupling mechanism 40, power detection device 50, voltage comparator 60 and voltage controlled attenuator 10 connect successively; Coupling mechanism 40, power detection device 50, micro-chip 70 and numerical-control attenuator 20 connect successively; Power amplifier 30, temperature sensor 80, micro-chip 70 connect successively.
Its principle of work is:
1. radiofrequency signal enters into voltage controlled attenuator 10 from signal input A;
2. the voltage radio frequency signal that voltage controlled attenuator 10 provides according to voltage comparator 60 carries out attenuation amplitude control, and the radiofrequency signal through voltage controlled attenuator 10 outputs to numerical-control attenuator 20;
3. the decrement radio frequency signal that numerical-control attenuator 20 provides according to micro-chip carries out attenuation amplitude control, and the radiofrequency signal through numerical-control attenuator 20 outputs to power amplifier 30;
4. power amplifier 30 radio frequency signal amplifies, and the high-power RF signal after amplification exports primarily of signal output B;
5. coupling mechanism 40 is coupled part radiofrequency signal to power detection device 50 from the outlet of power amplifier 30;
6. radiofrequency signal is converted to analog DC voltage signal by power detection device 50, and this d. c. voltage signal is supplied to voltage comparator 60 and micro-chip 70;
7. the comparison voltage of voltage comparator 60 is respectively from power detection device 50 and micro-chip 70, and the real-time condition according to two-way voltage compares, voltage after comparing is outputted to voltage controlled attenuator 10 simultaneously, the range value decayed with control voltage controlled attenuator 10, thus realize the control to power amplifier output power; In the environment of high/low temperature differing temps, real time temperature power amplifier 30 being detected is supplied to micro-chip 70 by temperature detector 80, the voltage of voltage comparator 60 is adjusted by micro-chip 70 according to detected temperatures, makes power amplifier 30 output rating in differing temps environment keep stable;
8. the time time variant voltage from power detection device 50 is carried out getting maximum value process by micro-chip 70, the time once getting maximum value is greater than 4.6ms(allows it cover a full time slot signal), ALC power settings in the output power value obtained and micro-chip is compared the decrement obtaining numerical-control attenuator
Real-time output rating-ALC the power settings that the pad value=microprocessor detect of numerical-control attenuator arrives
The pad value of this numerical-control attenuator is issued numerical-control attenuator 20 by micro-chip 70, and the decrement radio frequency signal that numerical-control attenuator 20 provides according to micro-chip 70 carries out attenuation amplitude control, thus realizes the control to power amplifier 30 output rating; In the environment of high/low temperature differing temps, real time temperature power amplifier 30 being detected is supplied to micro-chip 70 by temperature detector 80, power detection value is carried out temperature compensation adjustment according to detected temperatures by micro-chip 70, the output rating that power amplifier 30 is detected at different temperatures is identical with real output, makes power amplifier 30 output rating in differing temps environment keep stable.
Its functional block (structure and function thereof) is as follows:
1), voltage controlled attenuator 10
Voltage controlled attenuator 10 selects the circuit with controllable attenuation function or device that include but not limited to that voltage controlled attenuator, Flow Control losser etc. are integrated or build. For realizing radio frequency signal attenuation function.
2), numerical-control attenuator 20
Numerical-control attenuator 20 selects the numerical-control attenuator with certain stepping. Power detection device 20.
3), power amplifier 30
Power amplifier 30 is selected has all devices that radiofrequency signal amplifies function. For realizing the amplification function of radiofrequency signal.
4), coupling mechanism 40
Coupling mechanism 40 selects the device or the mode that include but not limited to that micro-band coupling device, cavity coupling device, dielectric coupler, capacity coupler, resistance coupler, inductive coupler etc. have coupled RF semiotic function. For realizing the coupling function of radiofrequency signal.
5), power detection device 50
Power detection device 50 is selected and is included but not limited to integrated power detector, or adopts the circuit with radio-frequency signal detection function that the device such as diode builds. For realizing the detection function of radio frequency signal, convert radiofrequency signal size to analog DC voltage size.
6), voltage comparator 60
Voltage comparator 60 is selected and is included but not limited to integrated voltage comparator, or the circuit with voltage compare function that the employing device such as operational amplifier, triode is built. For comparing detection voltage and the voltage size of micro-chip offer.
7), micro-chip 70
Programming devices such as including but not limited to all kinds of micro-chip, FPGA selected by micro-chip 70. For realizing the automatic control function of system.
8), temperature sensor 80
Temperature sensor 80 is selected and is included but not limited to integrated temperature detector, or the circuit with temperature detecting function that employing thermistor equitemperature susceptible device susceptor is built. For realizing temperature detecting function.
Above content is in conjunction with concrete enforcement mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations. For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. the device of the different peak-to-average force ratio signal of control and different time-gap signal power stability, it is characterized in that: it comprise the analogue loop for realizing average power being controlled, for realize being controlled by time slot signal power digital loop, for realizing the temperature sensor (80) of temperature detecting function, described analogue loop is made up of voltage controlled attenuator (10), power amplifier (30), coupling mechanism (40), power detection device (50), voltage comparator (60), micro-chip (70), described digital loop is made up of numerical-control attenuator (20), power amplifier (30), coupling mechanism (40), power detection device (50), micro-chip (70), radiofrequency signal enters into voltage controlled attenuator (10) from signal input (A), the voltage radio frequency signal that voltage controlled attenuator (10) provides according to voltage comparator (60) carries out attenuation amplitude control, and the radiofrequency signal through voltage controlled attenuator (10) outputs to numerical-control attenuator (20), the decrement radio frequency signal that numerical-control attenuator (20) provides according to micro-chip carries out attenuation amplitude control, and the radiofrequency signal through numerical-control attenuator (20) outputs to power amplifier (30), power amplifier (30) radio frequency signal amplifies, and the high-power RF signal after amplification exports primarily of signal output (B), coupling mechanism (40) is coupled part radiofrequency signal to power detection device (50) from the outlet of power amplifier (30), radiofrequency signal is converted to analog DC voltage signal by power detection device (50), and this d. c. voltage signal is supplied to voltage comparator (60) and micro-chip (70), the comparison voltage of voltage comparator (60) is respectively from power detection device (50) and micro-chip (70), and the real-time condition according to two-way voltage compares, voltage after comparing is outputted to voltage controlled attenuator (10) simultaneously, the range value decayed with control voltage controlled attenuator (10), thus realize the control to power amplifier output power, in the environment of high/low temperature differing temps, real time temperature power amplifier (30) being detected is supplied to micro-chip (70) by temperature sensor (80), the voltage of voltage comparator (60) is adjusted by micro-chip (70) according to detected temperatures, makes power amplifier (30) output rating in differing temps environment keep stable, time time variant voltage from power detection device (50) is carried out getting maximum value process by micro-chip (70), ALC power settings in the output power value obtained and micro-chip (70) is compared the decrement obtaining numerical-control attenuator, the pad value of this numerical-control attenuator is issued numerical-control attenuator (20) by micro-chip (70), the decrement radio frequency signal that numerical-control attenuator (20) provides according to micro-chip (70) carries out attenuation amplitude control, thus realizes the control to power amplifier (30) output rating, in the environment of high/low temperature differing temps, real time temperature power amplifier (30) being detected is supplied to micro-chip (70) by temperature sensor (80), power detection value is carried out temperature compensation adjustment according to detected temperatures by micro-chip (70), the output rating that power amplifier (30) is detected at different temperatures is identical with real output, power amplifier (30) output rating in differing temps environment is made to keep stable, time time variant voltage from power detection device (50) is carried out getting maximum value process by described micro-chip (70), the time once getting maximum value is greater than 4.6ms,Real-time output rating-ALC the power settings that the pad value=microprocessor detect of above-mentioned numerical-control attenuator arrives.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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 |
| CN108011593B (en) * | 2018-01-18 | 2023-10-31 | 北京元景科技有限公司 | Stepping power amplifier for quantitative adjustment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| ATE376725T1 (en) * | 2001-03-14 | 2007-11-15 | Nokia Corp | METHOD AND RADIO TRANSMISSION UNIT FOR POWER DETECTION OF A MULTIPLE CARRIER SIGNAL |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co., Ltd Address before: 430074 Hubei city of Wuhan province East Lake high tech Development Zone No. 5 Dongxin Fiberhome 4 floor Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
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Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co., Ltd |