CN102480273A - Device and method for realizing output power control of power amplifier - Google Patents
Device and method for realizing output power control of power amplifier Download PDFInfo
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Abstract
The invention discloses a device and method for realizing output power control of a power amplifier. The device is characterized in that: a peak value detector 1 and a peak value detector 2 respectively detect an output signal power and an input signal power of the power amplifier; the corresponding output and input power detection voltages are output to an AD (Analogue-to-Digital) converter together; the AD converter converts the output and input power detection voltages into the corresponding output and input power values and transmits the corresponding output and input power values to a power control module; and the power control module obtains an input signal power threshold value under the corresponding power grade according to expected powers under various power grades of a power amplifier and the output and input power values, and controls an output power of the power amplifier in the known power amplifier state. The device and the method provided by the invention effectively prevent a transmitter from being in a saturated status or an over-power status, so as to avoid abnormalities, such as transmission index deterioration of a base station, occurrences of over-cover or over-area cover, and the like.
Description
Technical field
The present invention relates to the control method of power amplifier apparatus and power output thereof, relate in particular to the device and method of realizing power amplifier output power control in the base station transmitter.
Background technology
In field of wireless communication; Global system for mobile communications (GSM, Global System of Mobilecommunication) base station transmitter generally all adopts close-loop power controlling method, and its theory diagram is as shown in Figure 1; Crest voltage testing circuit through power amplifier (abbreviation power amplifier) output obtains the base station power output; Output power value that obtains and expectation power are compared, and result relatively is used for upgrading the calibration value of power control, comes the numerical-control attenuator of control power amplifiers front end with calibration value; Reach the purpose of regulating and controlling power output, make it be stabilized in the level of expectation power.
Principle through closed power control; Wherein need the base station to obtain the expectation power under the different capacity grade in advance; Need obtain the power output of power amplifier through peak detection circuit,, reach the purpose of the power of the input signal of regulating power amplifier so that reach control to numerical-control attenuator.Usually the base station power grade of GSM is 22 grades altogether, and wherein rate of static power is 6 grades, 15 grades of dynamic power grades, and 0 power grade is a maximum power level, therefore combination obtains 22 power grades altogether.Expectation power constant power Control Parameter all is before the base station equipment complete machine dispatches from the factory, to obtain through test, and is kept in the electricallyerasable ROM (EEROM) (EEPROM), and other parameter then is kept in the flash memory (Flash) that links to each other with CPU.The power output of power amplifier (PA) detects the power output detecting circuit through peak detection circuit; Convert thereof into the digital power value of feedback through modulus (AD) transducer; Pass through digital signal processor module (dsp chip) through FPGA (FPGA); Accomplish closed power control by this DSP module through software, through FPGA control numerical-control attenuator (DA) attenuation, thus the stable output of realization base station power.
The theoretical yield value of power amplifier may with the yield value of reality difference to some extent, this is because dispatch from the factory batch difference or various other factors cause actual yield value to disperse; Secondly, because the difference of impedance causes electric current different, make that thus yield value also all is different on the different frequencies.Therefore be different for its expectation power of different power amplifiers.When power amplifier power output value of feedback is lower than expectation power; The adjustment calibration value that can not stop; Through reducing the input signal that the numerical-control attenuator attenuation increases power amplifier, the power amplifier power output is constantly improved, make power amplifier be operated in saturation condition (promptly being operated in the inelastic region) at last.The consequence that causes like this is that the index that transmits of base station worsens, and was operated under the covering state, thereby interference is caused in other sub-district, worsens network index further.Secondly, because the power amplifier long-term work in the saturation region, causes temperature too high, may burn out power amplifier, the consequence that causes thus can be more serious.
Through analysis, find that the reason that causes the power output value of feedback to be lower than expectation power is varied to real case.For example, the too high device failure that causes the power amplifier output port of the temperature of operational environment, perhaps power amplifier power output feedback path damages, perhaps some device rosin joint of power amplifier etc.These above factors all might occur after a period of time is worked in the base station, and are difficult to avoid.
Also having in the existing technology much to be used to detect the saturated device of power amplifier, is to accomplish through the power amplifier hardware circuit basically, and peak detector detects the size of power output, is used to judge whether to have reached saturation condition.But this situation for the electric voltage exception (value of feedback is lower than expectation power for a long time) of power amplifier power output feedback but can't detect effectively, thereby can't avoid power amplifier to be operated in saturation condition.
Summary of the invention
Technical problem to be solved by this invention provides a kind of device and method of realizing power amplifier output power control, can prevent effectively that power amplifier is under the saturation condition to work.
In order to solve the problems of the technologies described above; The invention provides a kind of device of realizing power amplifier output power control; First peak detector, analog to digital converter and the power control module that comprise the power amplifier output; It is characterized in that, also comprise second peak detector of power amplifier input, wherein:
First peak detector is used for the pairing power output detecting circuit of detection power amplifier output signal power is exported to analog to digital converter;
Second peak detector is used for the pairing input power detecting circuit of detection power amplifier input signal power is exported to analog to digital converter;
Analog to digital converter is used for respectively power output detecting circuit and input power detecting circuit being converted to corresponding output power value and input power value, and exports to power control module;
Power control module; Be used for obtaining input signal power threshold value under the corresponding power grade, according to the State Control power amplifier output power of the power amplifier of knowing according to output power value, the input power value of expectation power under each power grade of power amplifier and input.
Further, this device also comprises numerical-control attenuator, wherein:
Analog to digital converter obtains the actual gain of power amplifier according to output power value, the input power value of input; Obtain input signal power threshold value under the corresponding power grade according to expectation power under each power grade of power amplifier and actual gain; According to the state of the power amplifier of knowing through input power value and the comparative result of answering input signal power threshold value under the power grade, the output control signal is given numerical-control attenuator;
Numerical-control attenuator is used for the control signal control numerical control attenuation through input, comes the output signal power of control power amplifiers with the input signal power through control power amplifiers.
Further, power control module comprises FPGA, digital processor module and the CPU that connects successively, wherein:
FPGA is used for converting output power value, the input power value of input to the logarithm value of corresponding output power and the logarithm value of input power, exports to digital processor module; Convert the power control value of importing to control signal and export to numerical-control attenuator;
Digital processor module is used for the actual gain of difference rated output amplifier according to the logarithm value of the logarithm value of power output and input power; According to the gain of this reality and the expectation power trace of power amplifier under each power grade that reads, calculate and obtain the input power threshold value under the corresponding power grade; Comparative result according to the input power threshold value under the logarithm value of input power and the corresponding power grade is judged the residing state of power amplifier, and corresponding power control value is exported to FPGA;
CPU is used to preserve digital processor module and calculates the input power threshold value under the corresponding power grade that obtains; Input power threshold value under the corresponding power grade that when powering on, will read is exported to digital processor module.
Further,
Digital processor module is if relatively the logarithm value of input power is then judged power amplifier place normal condition less than the input power threshold value under the corresponding power grade, and then the power control value of normal closed power control is carried out in output; Otherwise, judge critical saturation condition in power amplifier place or critical over-power condition, export-restriction continues to reduce the power control value of the numerical control attenuation under this power grade.
Further,
Digital processor module is if relatively the logarithm value of input power is not less than the input power threshold value under the corresponding power grade; And continue to judge that current time slots is the zero energy grade; Then report the power amplifier place critical saturation condition; If continue to judge that current time slots is not the zero energy grade, report that then power amplifier is issued to critical over-power condition at this power grade.
In order to solve the problems of the technologies described above, the invention provides a kind of method that realizes power amplifier output power control, comprising:
After power amplifier powers on, work in when presetting power, detect this power amplifier input signal power and output signal power respectively, calculate the actual yield value of this power amplifier thus;
According to the yield value of this power amplifier reality and the expectation power under each power grade, calculate the input power threshold value under the corresponding power grade of this power amplifier;
With input signal power threshold value comparison under the input signal power that detects and the corresponding power grade, according to the power output of this power amplifier of State Control of this power amplifier of judging through comparative result.
Further,
Calculate the actual yield value of this power amplifier, the logarithm value that equals output signal power deducts the logarithm value of input signal power.
Further,
Calculate the corresponding power grade of this power amplifier input power threshold value down, after equaling this power grade expectation performance number and deducting the yield value of this power amplifier reality, add power engineering margin value.
Further, with input signal power threshold value comparison under the logarithm value of the input signal power that detects and the corresponding power grade, the power output according to this power amplifier of State Control of this power amplifier of judging through comparative result specifically comprises:
If relatively the logarithm value of input power judges then that less than input signal power threshold value under the corresponding power grade this power amplifier works in normal condition, carry out the normal calibration of power according to the output signal power that detects;
If relatively the logarithm value of input power is not less than input signal power threshold value under the corresponding power grade, judge that then this power amplifier is in critical saturation condition or critical over-power condition, stop this power grade is carried out the calibration operation that power raises.
Further,
Logarithm value comparing input power is not less than under the situation of input signal power threshold value under the corresponding power grade; Continue to judge that current time slots is the zero energy grade; Then report this critical saturation condition in power amplifier place; If continue judging current time slots is not the zero energy grade, report that then power amplifier locates critical over-power condition under this power grade; Continue to reduce the numerical control attenuation under this power grade through stopping, stopping this power grade is carried out the calibration operation that power raises.
The present invention is through increasing the real-time detection to input signal power at the power amplifier input; Utilize the input signal power of the power amplifier that detects and the actual gain that output signal power calculates power amplifier, obtain the threshold value of power amplifier input signal power under the different capacity grade with this; With the comparison of input signal power with corresponding threshold value, operate accordingly according to comparative result, prevent effectively that thus power amplifier is operated in saturation condition and damages transmitter, avoid the base station to get over and distinguish covering and influence the communication network quality.
Description of drawings
Fig. 1 is the block diagram of power amplifier output power control device in the existing GSM base station transmitter;
The block diagram of Fig. 2 power amplifier output power control device of the present invention embodiment;
Fig. 3 is the flow chart of the control method embodiment of power amplifier output power of the present invention;
Fig. 4 is according to the flow chart of power amplifier State Control power output in the flow process shown in Figure 2.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment technical scheme of the present invention is set forth in more detail.Though below be to be embodiment with the GSM base station system, should be clear and definite, this is just in order to explain and explain the present invention, and does not constitute the restriction to technical scheme of the present invention.
As shown in Figure 2, be the structure of power amplifier output power control device one embodiment of the present invention, comprise the peak detector 1 of power amplifier input and peak detector 2, AD converter, power control module and the numerical-control attenuator of output, wherein:
Peak detector 1 is used to detect the output signal power of power amplifier, and the power output detecting circuit is exported to AD converter;
Peak detector 2 is used to detect the input signal power of power amplifier, and the input power detecting circuit is exported to AD converter;
AD converter is used for respectively the power output detecting circuit being become corresponding output power value and input power value with input power detecting circuit analog signal conversion separately, and exports to power control module;
Power control module; Be used for obtaining input signal power threshold value under each power grade of power amplifier according to the expectation power of power amplifier and output power value, the input power value of input; Know the state of power amplifier according to the comparative result of input signal power threshold value under input power value and the corresponding power grade, export control signal in view of the above and give numerical-control attenuator;
Numerical-control attenuator is used for the control signal control numerical control attenuation through input, thus the input signal power of control power amplifier.
Power control module shown in Figure 2 further comprises FPGA (FPGA), DSP module and the CPU that connects successively, also comprises the EEPROM and the Flash memory that is connected CPU that connect the DSP module, wherein:
FPGA is used for converting output power value, the input power value of input to the logarithm value of corresponding output power and the logarithm value of input power, exports to the DSP module as the Feedback of Power value;
The DSP module is used to calculate the actual yield value of power amplifier, equals the logarithm value of the logarithm value-input power of power output; According to the yield value of power amplifier reality and the expectation power trace of power amplifier under each power grade that reads from EEPROM, calculate the input power threshold value of obtaining under the corresponding power grade of power amplifier, and export to CPU; Wherein:
The logarithm value of the logarithm value-input power of yield value=power output that power amplifier is actual;
Input power threshold value under the corresponding power grade=
This power grade expectation performance number-actual yield value+power engineering margin value of power amplifier;
CPU, the input power threshold value under the corresponding power grade that is used for the DSP module is calculated is kept at the Flash memory; Input power threshold value under the corresponding power grade that when powering on, will read from the Flash memory is exported to the DSP module.
The DSP module is judged the state of power amplifier according to the comparative result of the corresponding power grade input power threshold value down of the input power logarithm value that will detect in real time and CPU output, and the power output controlling value is to FPGA in view of the above;
FPGA converts the power control value of importing to control signal and exports to numerical-control attenuator.
The DSP module utilizes the logarithm value of power output to carry out normal closed power control procedure if the input power logarithm value that detects relatively in real time less than the input power threshold value under the corresponding power grade, is then judged power amplifier place normal condition; If the input power logarithm value that detects relatively in real time is equal to or greater than the input power threshold value under the corresponding power grade; Then stop this power grade is carried out the calibration operation that power raises; I.e. restriction continues to reduce the numerical control attenuation under this power grade, no longer continues to increase with the input power value of controlling power amplifier.
If continuing to judge current time slots (is in 8 time slots in the tdma frame in the gsm system; Time is 577 microseconds; The power grade of each time slot work is possible different) be 0 power grade, then report the power amplifier place critical saturation condition, the attenuation that reduces numerical-control attenuator through further restriction limits the input power value of power amplifier; Prevent power amplifier work to saturation condition, thereby avoid the emission index of base station to worsen; If continue to judge that current time slots is not 0 power grade; Report that then power amplifier is issued to critical over-power condition at this power grade; The input power value of same further restriction power amplifier; Prevent that power amplifier is operated in over-power condition, thereby prevented that effectively anomalies such as distinguishing covering from appearring covering or getting in the base station.
For the ease of monitoring communication network base station equipment ruuning situation, engineering construction can increase alarm according to actual conditions and come the power amplifier of reporting base station transmitter whether to be in critical saturation condition and critical over-power condition.
The structure of embodiment shown in Figure 2 and structure shown in Figure 1 are compared; Can find out that its difference is; Input at power amplifier has increased a peak detector, is used for the size of the input signal power of real-time detection power amplifier, comes the input signal power of limiting power amplifier with this; Thereby prevent that power amplifier is operated in saturation condition, also prevent that the transmitting power of base station from surpassing the expectation power under the preset power grade simultaneously.
The present invention is directed to said apparatus embodiment, the method embodiment that realizes power amplifier output power control correspondingly also is provided, its flow process is after base station transmitter powers on, to be operated under the preset transmitting power to carry out, and is as shown in Figure 3, comprises the steps:
310: detect power amplifier input signal power and output signal power respectively, calculate and preserve the actual yield value of power amplifier in view of the above;
The logarithm value of the logarithm value-input power of yield value=power output that power amplifier is actual;
320:, calculate the input power threshold value of also preserving under the corresponding power grade of power amplifier according to the yield value of power amplifier reality and the expectation power under each power grade of power amplifier;
Input power threshold value under the corresponding power grade=
This power grade expectation performance number-actual yield value+power engineering margin value of power amplifier;
330: with input signal power threshold value under power amplifier input signal power that detects and the corresponding power grade relatively, judge the state of power amplifier, and control the power output of power amplifier in view of the above according to comparative result.
Be actually state, control the power output of power amplifier through the input power of regulating power amplifier according to power amplifier.Fig. 4 has represented in the flow process shown in Figure 2 to comprise the steps: according to the flow process of power amplifier State Control power output
3301: the input power threshold value under the corresponding power grade of the power amplifier of reading and saving;
3302:, compare the input signal power value and the input power threshold value of time slot feedback according to the power grade of power amplifier;
3303: whether judging the input signal power value less than the input power threshold value, is execution in step 3304 then, otherwise execution in step 3305;
3304: the power amplifier output power value according to feedback carries out the normal calibration of power, process ends;
3305: stop this power grade is carried out the calibration operation that power raises;
I.e. restriction continues to reduce the numerical control attenuation under this power grade, with the input power value continuation increase of restriction power amplifier.
3306: judging whether current time slots is 0 power grade, is execution in step 3307 then, otherwise execution in step 3308;
3307: the report power amplifier is operated in critical saturation condition, and the input signal power of restriction power amplifier increases process ends;
Continue to reduce the numerical control attenuation under this power grade through stopping, the input signal power that limits power amplifier increases.
3308: the report power amplifier is operated in critical over-power condition, and the input signal power of restriction power amplifier increases process ends.
Above flow process is represented, knows that less than the input power threshold value power amplifier is operated in normal condition according to the input signal power value, and then the power amplifier output power value according to feedback carries out normal calibration of power operation; The power grade that is equal to or greater than input power threshold value and current time slots according to the input signal power value knows that power amplifier is operated in critical saturation condition or critical over-power condition; Then stop corresponding power grade is carried out the calibration operation that power raises; Continue to reduce the numerical control attenuation under this power grade through restriction; The input power value that limits power amplifier continues to increase; Contained that effectively power amplifier is operated in saturated or over-power condition because of input signal is excessive, thereby avoided the emission index deterioration of base station and anomalies such as distinguishing covering occurred covering or getting over.
Claims (10)
1. device of realizing power amplifier output power control; First peak detector, analog to digital converter and the power control module that comprise the power amplifier output; It is characterized in that, also comprise second peak detector of power amplifier input, wherein:
First peak detector is used for the pairing power output detecting circuit of detection power amplifier output signal power is exported to said analog to digital converter;
Second peak detector is used for the pairing input power detecting circuit of detection power amplifier input signal power is exported to said analog to digital converter;
Said analog to digital converter is used for respectively said power output detecting circuit and said input power detecting circuit being converted to corresponding output power value and input power value, and exports to said power control module;
Said power control module; Be used for obtaining input signal power threshold value under the corresponding power grade, according to the State Control power amplifier output power of the power amplifier of knowing according to output power value, the input power value of expectation power under each power grade of power amplifier and input.
2. according to the described device of claim 1, it is characterized in that, also comprise numerical-control attenuator, wherein:
Said analog to digital converter obtains the actual gain of power amplifier according to output power value, the input power value of input; Obtain input signal power threshold value under the corresponding power grade according to expectation power under each power grade of power amplifier and actual gain; According to the state of the said power amplifier of knowing through input power value and the comparative result of answering input signal power threshold value under the power grade, the output control signal is given said numerical-control attenuator;
Said numerical-control attenuator is used for the control signal control numerical control attenuation through input, comes the output signal power of control power amplifiers with the input signal power through control power amplifiers.
3. according to the described device of claim 2, it is characterized in that said power control module comprises FPGA, digital processor module and the CPU that connects successively, wherein:
FPGA is used for converting output power value, the input power value of input to the logarithm value of corresponding output power and the logarithm value of input power, exports to said digital processor module; Convert the power control value of importing to control signal and export to said numerical-control attenuator;
Said digital processor module is used for the actual gain of difference rated output amplifier according to the logarithm value of the logarithm value of power output and input power; According to the gain of this reality and the expectation power trace of power amplifier under each power grade that reads, calculate and obtain the input power threshold value under the corresponding power grade; Comparative result according to the input power threshold value under the logarithm value of said input power and the said corresponding power grade is judged the residing state of power amplifier, and corresponding power control value is exported to said FPGA;
Said CPU is used to preserve said digital processor module and calculates the input power threshold value under the corresponding power grade that obtains; Input power threshold value under the corresponding power grade that when powering on, will read is exported to said digital processor module.
4. according to the described device of claim 3, it is characterized in that,
Said digital processor module is if the logarithm value of more said input power less than the input power threshold value under the corresponding power grade, is then judged power amplifier place normal condition, and then the power control value of normal closed power control is carried out in output; Otherwise, judge critical saturation condition in power amplifier place or critical over-power condition, export-restriction continues to reduce the power control value of the numerical control attenuation under this power grade.
5. according to the described device of claim 4, it is characterized in that,
Said digital processor module is if the logarithm value of more said input power is not less than the input power threshold value under the corresponding power grade; And continue to judge that current time slots is the zero energy grade; Report that then the power amplifier place states critical saturation condition; If continue to judge that current time slots is not the zero energy grade, report that then power amplifier is issued to critical over-power condition at this power grade.
6. method that realizes power amplifier output power control comprises:
After power amplifier powers on, work in when presetting power, detect this power amplifier input signal power and output signal power respectively, calculate the actual yield value of this power amplifier thus;
According to the yield value of this power amplifier reality and the expectation power under each power grade, calculate the input power threshold value under the corresponding power grade of this power amplifier;
With input signal power threshold value comparison under the input signal power that detects and the corresponding power grade, according to the power output of this power amplifier of State Control of this power amplifier of judging through comparative result.
7. according to the described method of claim 6, it is characterized in that,
Calculate the actual yield value of this power amplifier, the logarithm value that equals output signal power deducts the logarithm value of input signal power.
8. according to the described method of claim 7, it is characterized in that,
Calculate the corresponding power grade of this power amplifier input power threshold value down, after equaling this power grade expectation performance number and deducting the yield value of this power amplifier reality, add power engineering margin value.
9. according to the described method of claim 8; It is characterized in that; With input signal power threshold value comparison under the logarithm value of the input signal power that detects and the corresponding power grade; Power output according to this power amplifier of State Control of this power amplifier of judging through comparative result specifically comprises:
If the logarithm value of more said input power judges then that less than input signal power threshold value under the said corresponding power grade this power amplifier works in normal condition, carry out the normal calibration of power according to the said output signal power that detects;
If the logarithm value of more said input power is not less than input signal power threshold value under the said corresponding power grade; Judge that then this power amplifier is in critical saturation condition or critical over-power condition, stop this power grade is carried out the calibration operation that power raises.
10. according to the described method of claim 9, it is characterized in that,
Logarithm value in more said input power is not less than under the situation of input signal power threshold value under the said corresponding power grade; Continue to judge that current time slots is the zero energy grade; Report that then this power amplifier place states critical saturation condition; If continue judging current time slots is not the zero energy grade, report that then power amplifier locates critical over-power condition under this power grade; Continue to reduce the numerical control attenuation under this power grade through stopping, stopping this power grade is carried out the calibration operation that power raises.
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| PCT/CN2011/074091 WO2012068836A1 (en) | 2010-11-24 | 2011-05-16 | Device and method for implementing output power control of power amplifier |
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| CN103458430A (en) * | 2012-05-31 | 2013-12-18 | 京信通信系统（中国）有限公司 | Method and circuit for detecting power of GSM time-slot signals |
| CN104052421A (en) * | 2013-03-15 | 2014-09-17 | 中兴通讯股份有限公司 | Method and apparatus for controlling voltage of power amplifier, and communication device |
| CN105007117A (en) * | 2015-05-22 | 2015-10-28 | 深圳市磊科实业有限公司 | Method of calibrating BOSA on board (BOB) sending power automatically |
| CN107634725A (en) * | 2017-08-31 | 2018-01-26 | 深圳市远望谷信息技术股份有限公司 | A kind of method and device of hoisting power efficiency of amplitude |
| CN107733379A (en) * | 2016-08-11 | 2018-02-23 | 湖南格兰德芯微电子有限公司 | Radio frequency amplifier output end electrical mismatch detection circuit and its detection method |
| 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 |
| CN112383951A (en) * | 2020-11-16 | 2021-02-19 | 深圳国人无线通信有限公司 | Base station transmitting equipment and power supply management method thereof |
| CN112737609A (en) * | 2020-12-28 | 2021-04-30 | Oppo广东移动通信有限公司 | Radio frequency system, signal power control method, communication device, and storage medium |
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| CN103458430B (en) * | 2012-05-31 | 2016-08-10 | 京信通信系统（中国）有限公司 | The power detecting method of GSM time slot signal and power-sensing circuit |
| CN103458430A (en) * | 2012-05-31 | 2013-12-18 | 京信通信系统（中国）有限公司 | Method and circuit for detecting power of GSM time-slot signals |
| CN104052421B (en) * | 2013-03-15 | 2018-08-07 | 南京中兴软件有限责任公司 | A kind of method, apparatus and communication apparatus of control power amplifier voltage |
| CN104052421A (en) * | 2013-03-15 | 2014-09-17 | 中兴通讯股份有限公司 | Method and apparatus for controlling voltage of power amplifier, and communication device |
| CN105007117A (en) * | 2015-05-22 | 2015-10-28 | 深圳市磊科实业有限公司 | Method of calibrating BOSA on board (BOB) sending power automatically |
| CN105007117B (en) * | 2015-05-22 | 2018-11-02 | 深圳市磊科实业有限公司 | A kind of method of automatic calibration BOB transmission powers |
| CN107733379A (en) * | 2016-08-11 | 2018-02-23 | 湖南格兰德芯微电子有限公司 | Radio frequency amplifier output end electrical mismatch detection circuit and its detection method |
| CN107733379B (en) * | 2016-08-11 | 2021-08-03 | 格兰康希通信科技(上海)有限公司 | Radio frequency amplifier output end mismatch detection circuit and detection method thereof |
| CN107634725A (en) * | 2017-08-31 | 2018-01-26 | 深圳市远望谷信息技术股份有限公司 | A kind of method and device of hoisting power efficiency of amplitude |
| 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 |
| CN112383951A (en) * | 2020-11-16 | 2021-02-19 | 深圳国人无线通信有限公司 | Base station transmitting equipment and power supply management method thereof |
| CN112383951B (en) * | 2020-11-16 | 2022-08-09 | 深圳国人无线通信有限公司 | Base station transmitting equipment and power supply management method thereof |
| CN112737609A (en) * | 2020-12-28 | 2021-04-30 | Oppo广东移动通信有限公司 | Radio frequency system, signal power control method, communication device, and storage medium |
| CN112737609B (en) * | 2020-12-28 | 2022-05-17 | Oppo广东移动通信有限公司 | Radio frequency system, signal power control method, communication device, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012068836A1 (en) | 2012-05-31 |
| CN102480273B (en) | 2014-09-10 |
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