CN110380743A - A kind of high-precision short-wave transmitter power ALC control method - Google Patents
A kind of high-precision short-wave transmitter power ALC control method Download PDFInfo
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- CN110380743A CN110380743A CN201910654806.5A CN201910654806A CN110380743A CN 110380743 A CN110380743 A CN 110380743A CN 201910654806 A CN201910654806 A CN 201910654806A CN 110380743 A CN110380743 A CN 110380743A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/13—Monitoring; Testing of transmitters for calibration of power amplifiers, e.g. gain or non-linearity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/045—Circuits with power amplifiers with means for improving efficiency
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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- Transmitters (AREA)
Abstract
The present invention relates to a kind of high-precision short-wave transmitter power ALC control methods, the specific steps are as follows: S1, passes through the pad value table generated when calibration and reference voltage AD value table, the benchmark table of power control when as actual transmission；S2, inquiry pad value table find the pad value under corresponding working frequency, and the numerical-control attenuator inside power amplifier is given as initial attenuation value；S3, the forward and reverse detection voltage AD value generated further according to collected day tune interface unit, the calculating difference compared with the AD value for corresponding to working frequency in reference voltage AD value table；S4, detection power is calculated, detection performance number is big, then increases the pad value of numerical-control attenuator, and detection performance number is small, then reduces the pad value of numerical-control attenuator by step；S5, the fast drop of slow lift, dynamic adjusts, so that radio frequency power output is stablized in steady state value.The invention has the benefit that improving the efficiency of the calibration of power, reduce the consuming of manpower, ensure that the high-precision output of transmitter power.
Description
Technical field
The present invention relates to auto level control fields, it particularly relates to a kind of high-precision short-wave transmitter power ALC
Control method.
Background technique
The mode that past calibrates transmitter power is the table obtained by power amplifier debugging single board, writes
Enter transmitter control software, and exported by software control transmitter by this initial gain, and manually power meter is read, so
It manually calculates the gain for the numerical-control attenuator that should be adjusted afterwards, modifies software, adjust gain compiles burning, then allows transmitter
It exports again, power meter is read.Due to frequency response of the power amplifier on each frequency point and non-linear, need to adjust repeatedly,
Process is quite cumbersome, and is easy error.Secondly, the case where every transmitter semiconductor devices can not be consistent completely
Under, it cannot be guaranteed that the output power of all transmitters is accurate.But if every transmitter all does primary such power school
Standard, in the case where transmitter is produced in enormous quantities, and needs take a substantial amount of time and energy, feasibility are little.
Currently, there are also a kind of in such a way that internal loop is calibrated.Before starting calibration, first in regulation frequency point
On, when outputting reference power, transmitter controls the positive detection voltage of software collection as forward reference voltage.It is opened in calibration
When the beginning, transmitter (need to guarantee the power by initial Output of for ms by the more reasonable initial attenuation value Output of for ms of a Zhang Chushe
It must not exceed reference power, reference power be lower than when the initial Output of for ms generally set).Then, transmitter controls software collection
Positive detection voltage at this time calculates the difference for obtaining detection power and reference power compared with forward reference voltage.Finally, logical
Difference range, the gain of software adjust automatically numerical-control attenuator are crossed, until positive detection voltage and forward reference electricity are thought in judgement
When pressing consistent, the calibration of power terminates.This mode compares the mode of manual calibration, has very big improvement, but precision is still
Existing defects.Because actual measurement is found, under different frequency points, transmitter exports identical power, positive detector voltage
It is not consistent.Simultaneously as the otherness of transmitter semiconductor devices, the characteristic of every transmitter performance and different will lead to
It causes.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For above-mentioned technical problem in the related technology, the object of the present invention is to provide a kind of high-precision short-wave transmitters
Power ALC control method overcomes the shortcomings of above-mentioned aspect in existing product.
The purpose of the present invention is be achieved through the following technical solutions: a kind of high-precision short-wave transmitter power ALC control
Method processed, the specific steps are as follows:
S1, a pad value table and a reference voltage AD value table by being generated when ALC terminal and the control unit calibration of power,
The benchmark table of power control when as actual transmission；
S2, inquiry pad value table find the pad value under corresponding working frequency, give in power amplifier as initial attenuation value
The numerical-control attenuator in face；
S3, the forward and reverse detection voltage AD value generated further according to collected day tune interface unit, in reference voltage AD value table
The AD value of corresponding working frequency compares calculating difference；
S4, detection power is calculated, detection performance number is big, then increases the pad value of numerical-control attenuator, and detection performance number is small, then presses platform
The pad value of rank reduction numerical-control attenuator；
S5, the fast drop of slow lift, dynamic adjusts, so that radio frequency power output is stablized in steady state value.
Further, the step S1 the following steps are included:
S11, when starting calibration, ALC terminal issues control command and configuration parameter to control unit, control unit setting excitation work
Operation mode and working frequency switch harmonic filter wave band according to working frequency, and send numerical-control attenuator by initial attenuation value；
S12, after control unit receives the firing order of ALC terminal, control unit opens radio-frequency transmissions access, and control unit makes
It adjusts interface to be in emission state, and power amplifier is in emission state, and enabled driver exports radiofrequency signal；
After S13, waiting power stability, ALC terminal gets power and standing-wave ratio with reading order by being transported to set to power meter
Information, and control unit is fed back to, control unit acquires positive detection AD value from day tune interface unit, records and is uploaded to ALC
Terminal is shown；
S14, control unit are according to the power and standing-wave ratio information of acquisition, and compared with reference power, calculating should be adjusted automatically
Attenuation value records and saves and next round is waited to update numerical-control attenuator, then increases by stepping, continues next frequency point；
S15, after repeatedly adjusting, all working frequency output power approaches reference power, and control unit remembering at this time
The positive detection AD value and attenuation value of record, generate the pad value table and a reference voltage AD value table changed with frequency point,
And save the benchmark table of power control when as actual transmission.
Further, occurring following situations this calibration data in the step S14 all can be invalid, and pad value is not adjusted
It is whole: include: the performance number 1) obtained be 0,2) performance number that obtains it is larger when, standing-wave ratio is unqualified, 3) performance number that obtains compared with
When the performance number that when big, AD value is smaller, 4) obtains is smaller, AD value is larger.
The pad value table and reference voltage AD value table generated when the invention has the benefit that passing through the calibration of power is as control
The foundation of transmitter power processed can guarantee the high-precision output of transmitter power, meanwhile, working automation greatly reduces people
The consuming of power avoids the possibility of fault, and the efficiency of the calibration of power is substantially increased on the time.
Detailed description of the invention
Below according to attached drawing, invention is further described in detail.
Fig. 1 is that a kind of work of high-precision short-wave transmitter power ALC control system described in the embodiment of the present invention is former
Reason figure；
Fig. 2 is the calibration flow chart of ALC terminal power described in the embodiment of the present invention；
Fig. 3 is control unit calibration of power flow chart described in the embodiment of the present invention；
Fig. 4 is the pad value adjustment algorithm flow chart in control unit power calibration procedure described in the embodiment of the present invention；
Fig. 5 is ALC terminal power check process figure described in the embodiment of the present invention；
Fig. 6 is control unit power check process figure described in the embodiment of the present invention；
Fig. 7 is ALC terminal inquiry table flow chart described in the embodiment of the present invention；
Fig. 8 is control unit enquiry form flow chart described in the embodiment of the present invention；
The transmitter generated after the table that control method, internal calibration method and manual calibration method Fig. 9 of the invention generates
Output power curve graph varying with frequency.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
A kind of controlling party of high-precision short-wave transmitter power auto level control (ALC) described in the embodiment of the present invention
Method, the specific steps are as follows:
S1, pass through one pad value table of generation and a reference voltage AD value table when ALC terminal and the control unit calibration of power, work
The benchmark table of power control when for actual transmission；
S2, inquiry pad value table find the pad value under corresponding working frequency, give in power amplifier as initial attenuation value
The numerical-control attenuator in face；
S3, the forward and reverse detection voltage AD value generated further according to collected day tune interface unit, in reference voltage AD value table
The AD value of corresponding working frequency compares calculating difference；
S4, detection power is calculated, detection performance number is big, then increases the pad value of numerical-control attenuator, and detection performance number is small, then presses platform
The pad value of rank reduction numerical-control attenuator；
S5, the fast drop of slow lift, dynamic adjusts, so that radio frequency power output is stablized in steady state value.
In one embodiment, specific step is as follows by the step S1:
S11, when starting calibration, ALC terminal issues control command and configuration parameter to control unit, control unit setting excitation work
Operation mode and working frequency switch harmonic filter wave band according to working frequency, and send numerical-control attenuator by initial attenuation value；
S12, after control unit receives the firing order of ALC terminal, control unit opens radio-frequency transmissions access, and control unit makes
It adjusts interface to be in emission state, and power amplifier is in emission state, and control unit enables driver and exports radiofrequency signal；
After S13, waiting power stability, ALC terminal gets power and standing-wave ratio with reading order by being transported to set to power meter
Information, and control unit is fed back to, control unit acquires positive detection AD value from day tune interface unit, records and is uploaded to ALC
Terminal is shown；
S14, control unit are according to the power and standing-wave ratio information of acquisition, and compared with reference power, calculating should be adjusted automatically
Attenuation value records and saves and next round is waited to update numerical-control attenuator, then increases by stepping, continues next frequency point；
S15, after repeatedly adjusting, all working frequency output power approaches reference power, and control unit remembering at this time
The positive detection AD value and attenuation value of record, generate the pad value table and a reference voltage AD value table changed with frequency point,
And save the benchmark table of power control when as actual transmission；
When specifically used, by taking the radio station of 125W as an example, hardware includes transmitter, ALC terminating machine, RS power meter, RS232 serial ports
Line, network interface line, software include ALC calibration of power software, transmitter control software.
ALC terminal is the interface of human-computer interaction, and ALC terminal shows align mode and as a result, sending manipulation instruction, configures function
Rate meter obtains power information；Transmitter receives manipulation instruction, generates radiofrequency signal；RS power meter is that measurement passes through radio-frequency cable
Radio-frequency power and standing-wave ratio size high-precision meter；ALC terminal obtains the function of RS power meter measurement by RS232 Serial Port Line
Rate and standing-wave ratio information, and transmitter is sent to by cable, while sending other control information and interactive command to transmitter.
Transmitter is mainly completed to functions such as the modulation of input signal, frequency shift, filtering, amplifications.Control unit is complete
The control of pairs of transmitter power, the precision of pad value table and reference voltage AD value table that the calibration of power generates and accuracy can be straight
Connect the precision for influencing power control.
The interface of ALC calibration of power software is divided into configuring area, control area and the part of display area three.Configuring area
It is calibration of power parameter configuration region, specifically includes radio station machine number, initial frequency, terminates frequency, stepping, power grade；Control
Region is that user control command assigns window, specifically includes the machine and initializes, manually initializes, starting calibration, power inspection, more
New power meter, inquiry, stops control command at preservation；Display area is align mode and region as the result is shown, specifically includes calibration
Time, frequency, power, standing-wave ratio, pad value, AD value, voltage value show information.
ALC power calibration system mainly include the calibration of power, power inspection, inquiry, artificial initialization, local initialization,
Update six subfunctions of power meter.
After starting calibration, as shown in Figure 1, ALC terminal issues control command and configuration parameter to control unit, control is single
Member sets excitation operating mode and working frequency, switches harmonic filter wave band according to working frequency, and send number by initial attenuation value
Control attenuator.After receiving the firing order of ALC terminal, control unit opens radio-frequency transmissions access.
Control unit controls radio-frequency transmissions path pipeline: control unit receives firing order, and control unit enables day tune
Interface is in emission state；Be delayed 20ms, and the enabled transmitting PTT of control unit, power amplifier is in emission state；Be delayed 1ms,
Control unit enables driver and exports radiofrequency signal.
After the power stability of radio station, ALC terminal gets power and standing-wave ratio with reading order by being transported to set to power meter
Information, and feed back to control unit.Meanwhile control unit acquires positive detection AD value from day tune interface unit, records and uploads
It is shown to ALC terminal, control unit is according to the power and standing-wave ratio information of acquisition, and compared with reference power, automatic calculate is answered
The attenuation value of adjustment records and saves and next round is waited to update numerical-control attenuator, then increases by stepping, continues next frequency
Point, after repeatedly adjusting, all working frequency output power approaches reference power, and control unit recording just at this time
Two tables changed with frequency point are generated to detection AD value and attenuation value, and save the base of power control when as actual transmission
Quasi- table.
In actual transmission, control unit finds the corresponding base of present operating frequency by way of inquiring pad value table
Quasi- pad value, sets and gives numerical-control attenuator；Then, control unit inquires reference voltage according to the positive detection AD value acquired at this time
AD value table, benchmark forward direction corresponding with present operating frequency detect compared with AD value, calculate the pad value that should be adjusted automatically, update
And it exports.Adjustment in real time makes power stability in qualified dynamic range.In this way, it can make up due in temperature
Changed power caused by liter etc..Under actual conditions, excessive standing wave damages electronic component in order to prevent, it is also necessary in conjunction with reversed
AD value is detected to adjust rf gain.
By the control method of ALC, and combine the terminating machine of the high-precision measurement characteristic and man-machine close friend of power meter, control
Unit opens the power output of transmitter radio frequency path, and what readout power meter acquired after the output of the transmitters such as ALC terminal is stablized penetrates
Frequency performance number, and control unit is fed back to, control unit adjusts the gain output of numerical-control attenuator accordingly, and closed loop control is consequently formed
System, the pad value table and reference voltage AD value table obtained by this method compare manual calibration method and internal calibration method,
In actual transmission, output power has higher precision.
ALC terminal power as shown in Figure 2 calibrates flow chart, control unit calibration of power flow chart as shown in Figure 3, entire function
Rate calibrates process, it should be noted that the following: one, after power amplifier transmit-receive switch is switched to hair by control unit, kept in calibration process,
It can protect power tube；Two, before ALC terminal issues frequency, it can first judge the transmission power of frequency last time whether accidentally
In poor allowed band, if it is allowed, then skipping the frequency point, stepping increases, and sends next frequency point, and calibration effect can be improved in this way
Rate；Three, 3s is waited after emitting single-tone, and ALC terminal readout power meter again, waiting 3s is in order to stablize output power, to guarantee
Data accuracy；If four, ALC terminal read performance number it is excessive, in order to prevent power amplifier failure and lead to process disorder, can stand
Sending terminates calibration command, terminates calibration process；Five, each frequency point each round only does primary adjustment, after secondary adjusted etc.
It adjusts to next round, power amplifier can be heated so again, guarantee power output and reality output state consistency, to improve number
According to accuracy；Six, after all frequency point calibrations, control unit is including pad value table and reference voltage AD value table storage
Portion Flash can guarantee that data are not lost in this way.
Pad value adjustment algorithm flow chart in control unit power calibration procedure as shown in Figure 4, what is obtained from terminal
The AD value that power, standing-wave ratio and control unit sampling obtain comprehensively considers, exclude communication failure or equipment fault cause data without
The possibility of effect.Mainly in the following several ways: one, the performance number obtained is 0；Two, when the performance number obtained is larger, standing-wave ratio is not
It is qualified；Three, when the performance number obtained is larger, AD value is smaller；Four, when the performance number obtained is smaller, AD value is larger.Occur to take up an official post
A kind of situation, this calibration data all can be invalid, and pad value does not adjust.If four kinds of situations do not occur, power is judged
Whether value is in acceptability limit.If performance number is qualified, pad value is not adjusted.Otherwise, it calculates actual power and reference power misses
Poor dB value, and determine that decaying code adjusts stepping according to the range of error dB value, decaying code adjustment stepping needs comprehensively consider calibration
Efficiency and power amplifier safety.If the code adjustment stepping that decays is too small, adjustment number will increase, to reduce calibration of power effect
Rate；It is non-linear due to power amplifier if adjustment stepping is excessive, in power lifting, it is possible to can power alarm, or even burn device
Part.During largely groping, summary has obtained empirical value in the radio station type 125W.Reality is on other radio station, adjusting parameter
Specific requirement should be met.
ALC terminal power check process figure as shown in Figure 5, control unit power check process figure as shown in Figure 6, power inspection
Look into be after the calibration of power, the data obtained using the calibration of power emit in each frequency point it is primary, process substantially with power
Calibrate identical, difference is that ALC terminal does not issue performance number and standing-wave ratio to control unit, while control unit would not also be adjusted
Whole pad value.The purpose of power inspection is in order to check whether the data of the calibration of power are correct, if power emits function when checking
Rate is in acceptability limit, so that it may assert that data are errorless.
ALC terminal inquiry table flow chart as shown in Figure 7, control unit enquiry form flow chart as shown in Figure 8；ALC is whole
End, which issues, to be started to query, and send power grade and stepping, and control unit saves after receiving.Then ALC terminal issues frequency, control
Unit reports pad value and AD value after receiving frequency, and ALC terminal obtains print result.ALC terminal frequency is increased by stepping, is continued
Frequency is issued to control unit, repeats this step, until issuing frequency to terminate frequency, then querying flow terminates.Finally from end
It can be seen that the corresponding pad value of each frequency point and AD value, facilitate operator to check and analyze data on end.
Local initialization: ALC terminal issues local initialization command, after control unit receives, according to the history of decaying code
Empirical value initialization decaying table, and update internal Flash.Historical experience value is that ten transmitter calibration results are averaged in the past
What value obtained, it can be close to actual attenuation value, it is possible to reduce calibration the time it takes improves the efficiency of transmitter calibration.
Artificial initialization: it when finding that power amplifier in transmitter property difference is larger, can be adjusted by personal experience manual editing
Whole table, to achieve the purpose that quickly calibrated.Particular by modification configuration file, ALC terminal, point are opened after modification
Artificial initialization is hit, ALC terminal can issue artificial initialization command, and be attached to the attenuation data in configuration file.Control unit
After receiving, obtains and initialize decaying table, while updating internal Flash.
Update power table: the radio station the type 125W calibration of power is divided into four power grades, is high power, middle function respectively
Rate, low-power, tune power.After high power level is calibrated, high-power decaying table and benchmark AD value table are raw
At.Since power control does not need benchmark AD value table in high power following level, so only needing to decline by high power
Subtract table, according to historical experience, obtains high power level and middle power grade decaying dB difference, high power level and low-power etc.
Grade decaying dB difference, high power level and tune power grade decay dB difference, so that it may quickly generate middle power, low-power,
The decaying table of tune power.Three differences can be modified in configuration file, after modification, opened ALC terminal, clicked to update
Power table, ALC terminal can issue the order for updating power table, control unit receive after according to three differences, function in update
Rate, low-power, tune power decaying table, and be stored in internal Flash.It is larger in power amplifier in transmitter property difference, and school
Examination personnel again inexperienced value or be not desired to modification configuration file when, in this way generate decaying table, operate both facilitated, together
When again can improve decay table accuracy, and achieve the purpose that raising calibration efficiency.
The output of the transmitter generated after the table that method, internal calibration method and manual calibration method of the invention generates
The curve of power with frequency variation is as shown in figure 9, show that the Output of for ms power that control method of the invention generates floats in figure
Range is smaller, closer with reference power, has higher precision.
In conclusion passing through the pad value table and reference voltage AD value of generation by means of above-mentioned technical proposal of the invention
Foundation of the table as control transmitter power, can guarantee the high-precision output of transmitter power, in short wave communication field, more
For body, in transmitter power control field, have a very important significance.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (3)
1. a kind of high-precision short-wave transmitter power ALC control method, it is characterised in that: the following steps are included:
S1, pass through one pad value table of generation and a reference voltage AD value table when ALC terminal and the control unit calibration of power, work
The benchmark table of power control when for actual transmission；
S2, inquiry pad value table find the pad value under corresponding working frequency, give in power amplifier as initial attenuation value
The numerical-control attenuator in face；
S3, the forward and reverse detection voltage AD value generated further according to collected day tune interface unit, in reference voltage AD value table
The AD value of corresponding working frequency compares calculating difference；
S4, detection power is calculated, detection performance number is big, then increases the pad value of numerical-control attenuator, and detection performance number is small, then presses platform
The pad value of rank reduction numerical-control attenuator；
S5, the fast drop of slow lift, dynamic adjusts, so that radio frequency power output is stablized in steady state value.
2. a kind of high-precision short-wave transmitter power ALC control method according to claim 1, it is characterised in that: institute
State step S1 the following steps are included:
S11, when starting calibration, ALC terminal issues control command and configuration parameter to control unit, control unit setting excitation work
Operation mode and working frequency switch harmonic filter wave band according to working frequency, and send numerical-control attenuator by initial attenuation value；
S12, after control unit receives the firing order of ALC terminal, control unit opens radio-frequency transmissions access, and control unit makes
It adjusts interface to be in emission state, and power amplifier is in emission state, and enabled driver exports radiofrequency signal；
After S13, waiting power stability, ALC terminal gets power and standing-wave ratio with reading order by being transported to set to power meter
Information, and control unit is fed back to, control unit acquires positive detection AD value from day tune interface unit, records and is uploaded to ALC
Terminal is shown；
S14, control unit are according to the power and standing-wave ratio information of acquisition, and compared with reference power, calculating should be adjusted automatically
Attenuation value records and saves and next round is waited to update numerical-control attenuator, then increases by stepping, continues next frequency point；
S15, after repeatedly adjusting, all working frequency output power approaches reference power, and control unit remembering at this time
The positive detection AD value and attenuation value of record, generate the pad value table and a reference voltage AD value table changed with frequency point,
And save the benchmark table of power control when as actual transmission.
3. a kind of high-precision short-wave transmitter power ALC control method according to claim 2, which is characterized in that institute
State occur following situations this calibration data in step S14 all can be invalid, pad value does not adjust: including: the power 1) obtained
When for 0,2) performance number that value obtains is larger, standing-wave ratio is unqualified, 3) performance number that is obtaining is larger, AD value is smaller, 4) obtains
Performance number it is smaller when, AD value is larger.
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| CN114189928A (en) * | 2021-11-19 | 2022-03-15 | 广东宽普科技有限公司 | Large dynamic radio frequency power loop attenuation adjusting method, device, medium and equipment |
| CN114337860A (en) * | 2022-01-07 | 2022-04-12 | 中电科思仪科技股份有限公司 | Power calibration optimization method and system of signal generation device |
| CN114415778A (en) * | 2022-01-14 | 2022-04-29 | 中国电子科技集团公司第十研究所 | Automatic debugging method for ALC loop parameters |
| CN117240226A (en) * | 2023-09-28 | 2023-12-15 | 扬州万方科技股份有限公司 | High-power amplification system based on closed-loop modulation and digital overshoot prevention method |
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