CN109660219A - Calibration circuit, method, apparatus, equipment and the storage medium of power amplifier - Google Patents
Calibration circuit, method, apparatus, equipment and the storage medium of power amplifier Download PDFInfo
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- CN109660219A CN109660219A CN201811495608.0A CN201811495608A CN109660219A CN 109660219 A CN109660219 A CN 109660219A CN 201811495608 A CN201811495608 A CN 201811495608A CN 109660219 A CN109660219 A CN 109660219A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
This application discloses calibration circuit, method, apparatus, equipment and the storage mediums of a kind of power amplifier, this method comprises: closing the rf modulated signal of the power amplifier；By adjusting the grid voltage of the power amplifier, the quiescent current of the power amplifier is calibrated；Open the rf modulated signal of the power amplifier；By adjusting the input power of the power amplifier, the output power of the power amplifier is calibrated.Influence the process eliminate other components to current detecting realizes the automatic calibration to quiescent current and output power, improves calibration accuracy.
Description
Technical field
The present invention relates generally to communication equipment fields, and in particular to a kind of calibration circuit, method, the dress of power amplifier
It sets, equipment and storage medium.
Background technique
Currently, UAV Communication technology is continued to develop with the progress of usage mode and information technology, in order to realize nothing
The man-machine telecommunication with ground base station, high-power transmitter are airborne station and the essential equipment of ground base station,
It generally comprises MOSFET element power amplifier, since MOSFET element power amplifier in the fabrication process open by possible grid
It is larger to open voltage dispersion type, its performance is caused to have an impact, static state is realized using adjustable grid voltage in actual use
The calibration of operating point.
In the prior art, generally by programmable power supply, host computer, MCU (Microcontroller Unit；It is referred to as micro-
Control unit) etc. realize MOSFET element power amplifier electric current and power calibration, detailed process be by upper machine-readable
The current value Ia shown on programmable power supply is taken, and by adjusting grid voltage, current value Ib is read again, according to the difference of Ib and Ia
Value adjusts grid voltage again to complete the calibration to power amplifier.
But due to consumption of other components under different working modes in circuit to be calibrated, sample rate current can be caused
Fluctuation, cause the calibration accuracy to electric current not high, and to output power calibration need by other additional test equipments, school
Quasi- at high cost and process is complicated.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, be intended to provide the calibration circuit of power amplifier a kind of, method,
Device, equipment and storage medium can be realized the accurate calibration to power amplifier, and be capable of real-time monitoring power amplifier
Performance.
In a first aspect, the calibration circuit includes: microcontroller the present invention provides a kind of calibration circuit of power amplifier
Unit MCU, power amplifier, current sample detection resistance and current detecting chip, in which:
The drain electrode input terminal of the power amplifier is connected with one end of the current sample detection resistance, the power
The gate input of amplifier is connect with the digital-to-analogue conversion interface of the MCU, the output end of the current detecting chip with it is described
The analog-to-digital conversion interface of MCU is connected, the both ends of the input terminal of the current detecting chip and the current sample detection resistance
It is connected.
Second aspect, the present invention provides a kind of calibration methods of power amplifier, this method comprises:
Close the rf modulated signal of the power amplifier；
By adjusting the grid voltage of the power amplifier, the quiescent current of the power amplifier is calibrated；
Open the rf modulated signal of the power amplifier；
By adjusting the input power of the power amplifier, the output power of the power amplifier is calibrated.
The grid voltage by adjusting the power amplifier in one of the embodiments, puts the power
The quiescent current of big device is calibrated, comprising:
Circulation executes the first specified operation, until the first quiescent current of the power amplifier is in the first preset range
Until in value；
Described first specified operation includes:
According to the first current Gate-voltage of the power amplifier, the first quiescent current is determined；Wherein, described first refers to
When fixed operation executes for the first time, first current Gate-voltage is initial gate voltage, the described first specified operation non-first
When secondary execution, first current Gate-voltage specifies first after the adjusting for operating and obtaining when preceding once execution for described first
Grid voltage；
Judge whether first quiescent current is in the first preset range value；
When first quiescent current is not in first preset range value, to first current Gate-voltage
It is adjusted, the primary grid voltage after being adjusted, and controls into the next time described first specified operation；
When first quiescent current is in the first preset range value, control does not enter described first specifies next time
Operation.
In one of the embodiments, according to the first current Gate-voltage of the power amplifier, described first is determined
Quiescent current, comprising:
Obtain the output voltage of the current detecting chip；The output voltage and first current Gate-voltage are at just
It is related；
According to formula Ids=Vout/ (Gain*Rsense), the first quiescent current of the power amplifier is determined；Its
In, Ids is the first quiescent current of the power amplifier, and Vout is the output voltage of the current detecting chip, and Gain is
The gain of the current detecting chip, Rsense are the resistance value of the current sample detection resistance.
It is right in one of the embodiments, when first quiescent current is not in first preset range value
The current Gate-voltage value is adjusted, the primary grid voltage after being adjusted, comprising:
When first quiescent current is greater than the maximum value of first preset range value, with the reduction of the first preset step-length
First current Gate-voltage；
When first quiescent current is less than the minimum value of first preset range value, with first preset step-length
Increase first current Gate-voltage.
The circulation executes the first specified operation in one of the embodiments, until the first of the power amplifier
Quiescent current be in the first preset range value until after, the method also includes:
Circulation executes the second specified operation, until the second quiescent current of the power amplifier is in the second preset range
Until in value；Wherein:
Described second specified operation includes:
According to second current Gate-voltage of the power amplifier, the second quiescent current is determined；Described second refers to
When fixed operation executes for the first time, second current Gate-voltage is the primary grid voltage after the adjusting, and described second refers to
Surely when operation non-first time executes, second current Gate-voltage is the second grid voltage after the adjusting；
Judge whether second quiescent current is in second preset range value；In second preset range value
Maximum value be less than first preset range value in maximum value；Minimum value in second preset range value is greater than described
Minimum value in first preset range value；
When second quiescent current is not in second preset range value, to second current Gate-voltage
It is adjusted, the second grid voltage after being adjusted, and controls into the next time described second specified operation；
When second quiescent current is in second preset range value, control does not enter next time described second
Specified operation.
It is right in one of the embodiments, when second quiescent current is not in second preset range value
Second current Gate-voltage is adjusted, the second grid voltage after being adjusted, comprising:
When second quiescent current is greater than the maximum value of second preset range value, with second preset step-length
Reduce second current Gate-voltage；Second preset step-length is less than first preset step-length；
When second quiescent current is less than the minimum value of second preset range value, with second preset step-length
Increase second current Gate-voltage.
In one of the embodiments, by adjusting the input power of the power amplifier, to the power amplifier
Output power calibrated, comprising:
Circulation executes the specified operation of third, until the dynamic current of the power amplifier is in third preset range value
Until；
The third specifies to operate
According to the current input power of the power amplifier, dynamic current is determined；The specified operation of the third is for the first time
When execution, the current input power is initial input power, when the third operation non-first time executes, the current input
Power is that the third specifies the input power after the adjusting that operation is preceding to be obtained when once executing；
Judge whether the dynamic current is in third preset range value；
When the dynamic current is not in third preset range value, the current input power is adjusted, is obtained
Input power after to adjusting, and control into the specified operation of third next time；
When the dynamic current is within the scope of third predetermined threshold value, control does not enter the specified behaviour of the third next time
Make.
In one of the embodiments, when the dynamic current is not in third preset range value, to described current
Input power is adjusted, the input power after being adjusted, comprising:
When the dynamic current is greater than the maximum value of the third preset range value, with third preset step-length reduction
The current input power；
When the dynamic current is less than the minimum value of the third preset range value, with third preset step-length increase
The current input power.
In one of the embodiments, the method also includes:
Determine the second grid voltage after adjusting and the input power after the adjusting；
According to the input power after the second grid voltage and the adjusting, the current dynamic of the power amplifier is determined
State electric current；
Judge whether the current dynamic current is in the 4th preset range value；
When the current dynamic current is not in the 4th preset range, the second grid voltage is adjusted to
Zero, and close the rf modulated signal.
The third aspect, the embodiment of the present application provide a kind of calibrating installation of amplifier, which includes:
Closedown module is configured to close the rf modulated signal of the power amplifier；
Correcting current module is configured to adjust the grid voltage of the power amplifier, to the power amplification
The quiescent current of device is calibrated；
Opening module is configured to open the rf modulated signal of the power amplifier；
Calibration of power module is configured to adjust the input power of the power amplifier, to the power amplification
The output power of device is calibrated.
Fourth aspect, the embodiment of the present application provide a kind of equipment, including memory and processor, the memory storage
There is computer program, the processor realizes the calibration method of power amplifier described above when executing the computer program.
5th aspect, the embodiment of the present application provide a kind of computer readable storage medium, are stored thereon with computer journey
Sequence, the computer program realize the calibration method of power amplifier described above when being executed by processor.
Calibration circuit, method, apparatus, equipment and the storage medium of power amplifier provided in an embodiment of the present invention are closed
The rf modulated signal of power amplifier, by the grid voltage of regulation power amplifier, to the quiescent current of power amplifier
It is calibrated, and opens the rf modulated signal of power amplifier, by the input power of regulation power amplifier, power is put
The output power of big device is calibrated.The technical program can exclude calibration circuit in other current drain devices to current detecting
Influence, therefore can be improved the calibration accuracy of quiescent current, and be not necessary to additional test equipment, can realize simultaneously
The calibration of power amplifier quiescent electric current and output power, so that the simpler convenience of checking procedure.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of the calibration circuit of prior art intermediate power amplifier；
Fig. 2 is the flow diagram of the calibration method of prior art intermediate power amplifier；
Fig. 3 is the structural schematic diagram of the calibration circuit of power amplifier provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of the calibration method of power amplifier provided in an embodiment of the present invention；
Fig. 5 is that the drain current of power amplifier provided in an embodiment of the present invention shows with the relationship that grid voltage is positively correlated
It is intended to；
Fig. 6 is the process signal of the quiescent current coarse adjustment calibration method for the power amplifier of the embodiment of the present invention provided
Figure；
Fig. 7 is the process signal of the acquisition quiescent current calibration method for the power amplifier of the embodiment of the present invention provided
Figure；
Fig. 8 is the process signal of the quiescent current fine tuning calibration method for the power amplifier of the embodiment of the present invention provided
Figure；
Fig. 9 is the flow diagram of the calibration method of the output power for the power amplifier of the embodiment of the present invention provided；
Figure 10 is the condition monitoring of power amplifier provided in an embodiment of the present invention and the flow diagram of protection；
Figure 11 is the structural schematic diagram of the calibrating installation for the power amplifier of the embodiment of the present invention provided；
Figure 12 is a kind of structural schematic diagram of computer equipment provided in an embodiment of the present invention.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As mentioned in the background art, it may refer to shown in Fig. 1, which includes power amplifier 10 and MCU30,
Wherein, the mainboard to be calibrated where programmable power supply 20 and power amplifier 10 connect, the gate input of power amplifier 10 and
One end of MCU30 connects, and the other end of MCU30 is connect with host computer 40, realizes serial communication.Calibration one to power amplifier
As calibration to its quiescent current realized using programmable power supply cooperation host computer and MCU, wherein programmable power supply is that have relatively strong use
The normal formula power supply on way uses microcomputer technology to control the size for the electric current that power supply is provided into circuit in real time；On
Position machine is the computer that can directly issue manipulation command, can use serial communication, sends order to MCU and realizes communication,
And by realizing two-way communication between GPIO (General-Purpose IO ports, abbreviation universal I/O port) and programmable power supply.
Specific calibration process may refer to shown in Fig. 2, first sets zero for the grid voltage of power amplifier, is acquired by programmable power supply
The complete machine current value of mainboard to be calibrated is denoted as Ia, and the Ia is sent to host computer, adjusts number in MCU by PC control
The output voltage of mode converter, host computer read corresponding complete machine current value, are denoted as Ib, and according to the difference of Ib and Ia, judgement should
Whether difference in preset range value, if being not in preset range value, by digital analog converter in PC control MCU with
Preset step-length increases or reduces grid voltage, as shown in Figure 2, preset range be 240~260mA, preset step-length 0.05v,
To realize the calibration to power amplifier quiescent electric current, and the output work to power amplifier is realized using equipment such as frequency spectrographs
The calibration of rate.
But it is contained in circuit to be calibrated when calibrating current sampling data when quiescent current is calibrated in the prior art
The current drain of other components, and other components are under different working modes the larger fluctuation that can cause sample rate current,
Cause not high to correcting current precision, and needs to cause by other additional test equipments in output power calibration process
It is complicated to calibrate at high cost and calibration process.
In view of the drawbacks described above of the prior art, this application provides a kind of calibration methods of power amplifier, without logical
Overcurrent sampled value makees the calculation of difference, eliminates other influences of current drain device to current detecting in calibration circuit,
Directly by adjusting grid voltage, the calibration to the quiescent current of power amplifier is realized, and pass through regulation power amplifier
Input power, and then realize the calibration to output power, it avoids using other test equipments, the calibration process is simple and convenient, very
The calibration accuracy to power amplifier is realized in big degree.
Fig. 3 is the structural schematic diagram of the calibration circuit of power amplifier provided in an embodiment of the present invention, as shown in figure 3, should
Circuit to be calibrated includes micro-control unit MCU30, power amplifier 10, current sample detection resistance 60 and current detecting chip
50, wherein the drain electrode input terminal of power amplifier 10 is connected with one end of current sample detection resistance 60, power amplifier 10
Gate input and the digital-to-analogue conversion interface (DAC) of MCU30 connect, the output end of current detecting chip 50 and the mould of MCU30
Number translation interface (ADC) is connected, and the input terminal of current detecting chip 50 is connected with the both ends of current sample detection resistance 60.
Specifically, current detecting chip 50 can select voltage output cake core MAX44284, input terminal by with electricity
The both ends connection for flowing sampling resistor 60, can be used to detect the drain current of power amplifier 10, and output voltage is adopted with electric current
The pressure drop of sample resistance is directly proportional, to obtain the output voltage of current detecting chip 50, passes through the analog-to-digital conversion interface in MCU30
Digital signal is converted by analog signal, collects the output voltage of current detecting chip 50, in a calibration process, is passed through
Digital signal is converted analog signal by the digital-to-analogue conversion interface of MCU30, due between quiescent current and grid voltage at just
Relevant relationship can realize the calibration to the quiescent current of power amplifier 10 by adjusting grid voltage.
Optionally, analog-to-digital conversion interface can be 16, be also possible to 12, wherein when analog-to-digital conversion interface is 16
When, current detecting resolution ratio is 1.26 milliamperes (mA), and the corresponding current detecting resolution ratio of different bit wides is also different, and bit wide is more
Then current detecting resolution ratio is bigger, so that the detection of electric current is more accurate；Equally, digital-to-analogue conversion interface can be 16, can also
To be 12, wherein when digital-to-analogue conversion interface is 12, grid voltage detection resolution is 0.8mA.
Fig. 4 is the flow diagram of the calibration method of power amplifier provided in an embodiment of the present invention, as shown in figure 4, should
Method includes:
S101, the rf modulated signal for closing power amplifier.
S102, by the grid voltage of regulation power amplifier, the quiescent current of power amplifier is calibrated.
In general, audio signal and high frequency carrier are modulated to modulating wave first by modulation transmitter makes the frequency of high frequency carrier
Rate changes with audio signal, and is amplified by power amplifier to generated high-frequency signal, excitation, power amplifier and one
The impedance matching of series, exports signal to antenna.Wherein, since the deviation of manufacturing process causes its quiescent current to be unable to satisfy
The normal work demand of power amplifier can adjust grid voltage, thus to power amplification by closing rf modulated signal
The quiescent current of device is calibrated.
Specifically, there are positive correlations between the drain current and grid voltage of power amplifier, Fig. 5 institute may refer to
Show, wherein when closing rf modulated signal, the electric current of power amplifier consumption is quiescent current, is believed when opening radio-frequency modulations
Number when, power amplifier consumption electric current be dynamic current can optionally be adjusted by the digital-to-analogue conversion Interface Controller of MCU
Grid voltage realizes the calibration to the quiescent current of power amplifier.
S103, the rf modulated signal for opening power amplifier.
S104, by the input power of regulation power amplifier, the output power of power amplifier is calibrated.
Specifically, the radio frequency tune of power amplifier can be opened after carrying out quiescent current calibration to power amplifier
Signal processed, then power amplifier exports dynamic current, and then passes through the input power of regulation power amplifier, so that dynamic current
In preset range, to realize the calibration to the output power of power amplifier.
The calibration method of power amplifier provided in this embodiment is closed the rf modulated signal of power amplifier, is passed through
The grid voltage of regulation power amplifier calibrates the quiescent current of power amplifier, and opens penetrating for power amplifier
Frequency modulation calibrates the output power of power amplifier by the input power of regulation power amplifier.This technology
Scheme can exclude other influences of current drain device to current detecting in calibration circuit, therefore can be improved quiescent current
Calibration accuracy, and it is not necessary to additional test equipment, power amplifier quiescent electric current and output power can be realized simultaneously
Calibration so that the simpler convenience of checking procedure.
Fig. 6 is the process signal that the quiescent current provided in an embodiment of the present invention to power amplifier carries out coarse adjustment calibration
Figure, as shown in fig. 6, this method comprises:
Circulation executes the first specified operation, until the first quiescent current of power amplifier is in the first preset range value
Until；First specified operation includes:
S201, the first current Gate-voltage according to power amplifier, determine the first quiescent current；Wherein, first is specified
When operation executes for the first time, the first current Gate-voltage is initial gate voltage, when the first specified operation non-first time executes, the
One current Gate-voltage specifies the primary grid voltage after the adjusting for operating and obtaining when preceding primary execution for described first；
Optionally, it may refer to shown in Fig. 7, as a kind of achievable mode for determining the first quiescent current, can wrap
It includes:
S301, the output voltage for obtaining current detecting chip；Output voltage and current Gate-voltage are positively correlated.
S302, according to formula Ids=Vout/ (Gain*Rsense), determine the first quiescent current of power amplifier；Its
In, Ids is the first quiescent current of power amplifier, and Vout is the output voltage of current detecting chip, and Gain is current detecting
The gain of chip, Rsense are the resistance value of current sample detection resistance.
Specifically, electric current inspection can be acquired by the analog-to-digital conversion interface in MCU during calibrating to quiescent current
The output voltage for surveying chip can be according to formula Ids=Vout/ after the output voltage for getting current detecting chip
(Gain*Rsense) the first quiescent current of power amplifier is determined, optionally, in the present embodiment, current detecting chip
Gain G ain=50, the resistance value Rsense=40m Ω of current sample detection resistance.It should be noted that due to current detecting
The output voltage of chip is directly proportional to the first quiescent current, while the first quiescent current and the first current Gate of power amplifier
Voltage is positively correlated, therefore the output voltage of current detecting chip is positively correlated with the first current Gate-voltage.
S202, judge whether the first quiescent current is in the first preset range value；
S203, when the first quiescent current is not in the first preset range value, the first current Gate-voltage is adjusted
Section, the primary grid voltage after being adjusted, and return and continue to execute step 201.
Specifically, when the first quiescent current is not in the first preset range value, it can be current by increasing or reducing
Gate voltage values, the primary grid voltage after being adjusted, wherein when the first quiescent current is greater than the first preset range value most
When big value, the first current Gate-voltage is reduced with the first preset step-length, when the first quiescent current is less than the first preset range value
When minimum value, the first current Gate-voltage is increased with the first preset step-length.
S204, when the first quiescent current is in the first preset range value, process terminates.
Specifically, closing rf modulated signal when starting calibration, according to the initial gate voltage of power amplifier, determine
First quiescent current, and judge whether the first quiescent current is in the first preset range value, if first quiescent current is not
In the first preset range value, then by adjusting the first current Gate-voltage value, come the primary grid voltage after being adjusted,
If first quiescent current is in the first preset range value, then it represents that completed to the coarse adjustment of power amplifier.
It should be noted that the calibration process in the embodiment of the present application can be divided into coarse adjustment and fine tuning, wherein tune when coarse adjustment
Adjusting range is big, and precision is small, and adjustable range is small when fine tuning, and precision is high.Above-mentioned first specified operation is to quiescent current progress coarse adjustment
Process, the first preset range be to quiescent current carry out coarse adjustment when setting preset range.
Specifically, then explanation is to quiescent current when the quiescent current of power amplifier is in the first preset range value
Coarse adjustment is completed, more accurate to make quiescent current, then needs to carry out fine tuning to it.
As shown in figure 8, for the process schematic provided by the embodiments of the present application for carrying out fine tuning calibration to quiescent current.The party
Method includes:
Circulation executes the second specified operation, until the quiescent current of power amplifier is in the second preset range value and is
Only；Wherein: the second specified operation includes:
S401, the second current Gate-voltage according to power amplifier, determine the second quiescent current；Second specified operation the
When primary execution, the second current Gate-voltage is the primary grid voltage after adjusting, when the second specified operation non-first time executes,
Second current Gate-voltage is the second grid voltage after adjusting.
Wherein it is determined that the process of the second quiescent current is identical as the realization process of above-mentioned the first quiescent current of determination, herein
It repeats no more.
S402, judge whether the second quiescent current is in the second preset range value；
The preset range value that second preset range value is arranged when being to quiescent current fine tuning, therefore it is required that the second default model
Maximum value in value is enclosed less than the maximum value in the first preset range value, and it is pre- that the minimum value in the second preset range value is greater than first
If the minimum value in value range.
S403, when the second quiescent current is not in the second preset range value, current Gate-voltage is adjusted, is obtained
Second grid voltage after to adjusting, and return and continue to execute step 401；
Specifically, when the second quiescent current is not in the second preset range value, can by increase or reduce this
Two current Gate-voltages, the second grid voltage after being adjusted, when the second quiescent current is greater than the second preset range value most
When big value, the second current Gate-voltage is reduced with the second preset step-length, when the second quiescent current is less than the second preset range value
When minimum value, the second current Gate-voltage is increased with the second preset step-length.
Wherein, the second preset step-length should be less than the first preset step-length.
S404, when the second quiescent current is in the second preset range value, process terminates.
Illustratively, when specifically calibrating to the quiescent current of power amplifier, initial gate voltage can be set to 1.3V,
The normal static electric current of power amplifier is 250mA, and the convergence range of quiescent current is 240~260mA when coarse adjustment, to grid electricity
Step value of pressure when being adjusted is 0.05, and the convergence range of quiescent current is 248~252mA when fine tuning, to grid voltage into
Step value when row is adjusted is 0.01, i.e. the first preset range value is 240~260mA, and the first preset step-length is 0.05 second pre-
If value range is 248~252mA, the second preset step-length is 0.01.By adjusting grid voltage, so that quiescent current discrete type is more
Small, quiescent current more levels off to 250mA.
For example, first closing rf modulated signal in adjustment process, grid voltage 1.3V is inputted to power amplifier, is led to
The output voltage of analog-to-digital conversion interface acquisition current detecting chip is crossed, and true according to formula Ids=Vout/ (Gain*Rsense)
Determine quiescent current, wherein current detecting chip Gain=50, current sampling resistor value Rsense=40m Ω, by the quiescent current
It is compared with 260mA, if it is greater than 260mA, controls to adjust grid voltage and reduce 0.05V, it, will if it is less than 260mA
The quiescent current is compared with 240mA, if the quiescent current is greater than 240mA, without carrying out continuation coarse adjustment to it, if this is quiet
State electric current is less than 240mA, then controls to adjust grid voltage and increase 0.05V.Similarly, fine-tuning process is consistent with above-mentioned coarse tuning process,
The stepping of grid voltage is smaller than coarse adjustment stepping, so that quiescent current is converged in 248~252mA, realizes the quiet of power amplifier
The calibration of state electric current.
The calibration method of the quiescent current of power amplifier provided in this embodiment, including the coarse tuning process to quiescent current
And fine-tuning process, so that the quiescent current after calibration is more accurate.
It is the flow diagram calibrated to the output power of power amplifier that Fig. 9, which is provided in an embodiment of the present invention,.
As shown in figure 9, this method comprises:
Circulation executes the specified operation of third, until the dynamic current of power amplifier is in third preset range value and is
Only；Third specifies to operate
S501, the current input power according to power amplifier, determine dynamic current；The specified operation of the third is for the first time
When execution, current input power is initial input power, and when third operates non-first time execution, current input power refers to for third
Input power after the adjusting obtained when primary execution before fixed operation.
S502, judge whether dynamic current is in third preset range value.
S503, current input power is adjusted, the input power after being adjusted, and returns and executes S501.
Specifically, being adjusted after the completion of to power amplifier quiescent current calibration procedure to power amplifier input radio frequency
Signal obtains dynamic current, for example, the dynamic current and third can be preset model to power amplifier input power 15dBm
It encloses value to be compared, by adjusting current input power, is converged in dynamic current in third preset range value, works as dynamic current
When being not in third preset range value, current input power is adjusted, the input power after being adjusted；Work as dynamic electric
When stream is in third preset range value, then it represents that calibrate and complete to the output power of power amplifier.Optionally, can pass through
Input power is increased or reduced with third step-length, so that output power is in third preset range value.
Illustratively, if the normal output power range of power amplifier be 1.8~1.85w, according to test empirical value,
Corresponding dynamic current range is 700~720mA, then the dynamic current that will acquire first is compared with 720mA, if it is greater than
Input power value is then reduced 0.1dB by 720mA, if current value is less than 700mA, input power is increased 0.1dB, so that dynamic
State electric current is converged in 700~720mA, then calibrates and complete to the output power of power amplifier.
The calibration method of power amplifier provided in this embodiment does not need additional test equipment, can realize pair
The calibration of the output power of power amplifier realizes that process is simple and convenient.
Figure 10 is the condition monitoring of power amplifier provided in an embodiment of the present invention and the flow diagram of protection.Such as Figure 10
It is shown, this method comprises:
S601, the second grid voltage after adjusting and the input power after adjusting are determined；
S602, according to the input power after second grid voltage and adjusting, determine the current dynamic current of power amplifier；
S603, judge whether current dynamic current is in the 4th preset range value；
When S604, current dynamic current are not in the 4th preset range, second grid voltage is adjusted to zero, and close
Rf modulated signal.
Specifically, power amplifier when being worked, can monitor it in real time, whether power amplifier is determined
Second after adjusting is determined by the calibration of above-mentioned quiescent current and output power to power amplifier in normal condition
Input power after grid voltage and adjusting, to obtain the current dynamic current of power amplifier, and judges current dynamic electric
Whether stream is in the 4th preset range value, wherein the 4th preset range is that power amplifier is under safe work state
Threshold range, when the current dynamic current is greater than the maximum value in the 4th preset range or less than in the 4th preset range value
When minimum value, then second grid voltage is adjusted to zero, and close rf modulated signal, so that power amplifier stops working.
It should be noted that power amplifier is in practical work process, it may be due to not having to connect antenna or lack
Load causes power amplifier abnormal or damage, and the application can be by the current dynamic current of real-time sampling, and judges current dynamic
Whether state electric current is in the 4th preset range value, to protect power device in time.
The calibration method of power amplifier provided in this embodiment, by the current dynamic current of real-time detection, so that power
Amplifier can be automatically closed in abnormal cases, ensure that the safe handling of power amplifier, power can be protected to put in time
Big device.
It should be noted that although describing the operation of the method for the present invention in the accompanying drawings with particular order, this is not required that
Or hint must execute these operations in this particular order, or have to carry out operation shown in whole and be just able to achieve the phase
The result of prestige.On the contrary, the step of describing in flow chart can change and execute sequence.Additionally or alternatively, it is convenient to omit certain
Multiple steps are merged into a step and executed, and/or a step is decomposed into execution of multiple steps by step.
Figure 11 is the structural schematic diagram of the calibrating installation of power amplifier provided in an embodiment of the present invention.As shown in figure 11,
The device may be implemented such as Fig. 4~method shown in Fig. 10, the apparatus may include:
Closedown module 10 is configured to close the rf modulated signal of the power amplifier；
Correcting current module 20 is configured to adjust the grid voltage of the power amplifier, put to the power
The quiescent current of big device is calibrated；
Opening module 30 is configured to open the rf modulated signal of the power amplifier；
Calibration of power module 40 is configured to adjust the input power of the power amplifier, put to the power
The output power of big device is calibrated.
Preferably, above-mentioned correcting current module 20, can be specifically used for:
Circulation executes the first specified operation, until the first quiescent current of the power amplifier is in the first preset range
Until in value；Wherein,
Described first specified operation includes:
According to the first current Gate-voltage of the power amplifier, the first quiescent current is determined；Wherein, described first refers to
When fixed operation executes for the first time, first current Gate-voltage is initial gate voltage, the described first specified operation non-first
When secondary execution, first current Gate-voltage specifies first after the adjusting for operating and obtaining when preceding once execution for described first
Grid voltage；
Judge whether first quiescent current is in the first preset range value；
When first quiescent current is not in first preset range value, to first current Gate-voltage
It is adjusted, the primary grid voltage after being adjusted, and controls into the next time described first specified operation；
When first quiescent current is in the first preset range value, control does not enter described first specifies next time
Operation.
Preferably, above-mentioned correcting current module 20 executes the first current Gate-voltage according to the power amplifier, really
When fixed first quiescent current, it is specifically used for:
Obtain the output voltage of the current detecting chip；The output voltage and first current Gate-voltage are at just
It is related；According to formula Ids=Vout/ (Gain*Rsense), the first quiescent current of the power amplifier is determined；Wherein,
Ids is the first quiescent current of the power amplifier, and Vout is the output voltage of the current detecting chip, and Gain is described
The gain of current detecting chip, Rsense are the resistance value of the current sample detection resistance.
Preferably, above-mentioned correcting current module 20 is executed when first quiescent current is not at first preset range
When in value, the current Gate-voltage value is adjusted, when primary grid voltage after being adjusted, is specifically used for:
When first quiescent current is greater than the maximum value of first preset range value, with the reduction of the first preset step-length
First current Gate-voltage；When first quiescent current is less than the minimum value of first preset range value, with institute
It states the first preset step-length and increases first current Gate-voltage.
Optionally, which can also include:
Electric current recalibration module 50, is used for: circulation executes the second specified operation, until the second of the power amplifier is quiet
Until state electric current is in the second preset range value；Wherein:
Described second specified operation includes:
According to the second current Gate-voltage of the power amplifier, the second quiescent current is determined；Described second specified behaviour
When making to execute for the first time, second current Gate-voltage is the primary grid voltage after the adjusting, the described second specified behaviour
When making non-first time execution, second current Gate-voltage is the second grid voltage after the adjusting；
Judge whether second quiescent current is in second preset range value；In second preset range value
Maximum value be less than first preset range value in maximum value；Minimum value in second preset range value is greater than described
Minimum value in first preset range value；
When second quiescent current is not in second preset range value, to second current Gate-voltage
It is adjusted, the second grid voltage after being adjusted, and controls into the next time described second specified operation；
When second quiescent current is in second preset range value, control does not enter next time described second
Specified operation.
Preferably, above-mentioned electric current recalibration module 50 is executed when second quiescent current is not at the described second default model
When enclosing in value, second current Gate-voltage is adjusted, when second grid voltage after being adjusted, is specifically used for:
When second quiescent current is greater than the maximum value of second preset range value, with second preset step-length
Reduce second current Gate-voltage；Second preset step-length is less than first preset step-length；When second static state
When electric current is less than the minimum value of second preset range value, the second current Gate electricity is increased with second preset step-length
Pressure.
Optionally, above-mentioned calibration of power module 40, can be used for:
Circulation executes the specified operation of third, until the dynamic current of the power amplifier is in third preset range value
Until；Wherein,
The third specifies to operate
According to the current input power of the power amplifier, dynamic current is determined；The specified operation of the third is for the first time
When execution, the current input power is initial input power, when the third operation non-first time executes, the current input
Power is that the third specifies the input power after the adjusting that operation is preceding to be obtained when once executing.
Judge whether the dynamic current is in third preset range value；
When the dynamic current is not in third preset range value, the input power is adjusted, is adjusted
Input power after section, and control into the specified operation of third next time；
When the dynamic current is within the scope of third predetermined threshold value, control does not enter the specified behaviour of the third next time
Make.
Preferably, above-mentioned calibration of power module 40 is executed when the dynamic current is not in third preset range value,
The current input power is adjusted, when input power after being adjusted, is specifically used for:
When the dynamic current is greater than the maximum value of the third preset range value, with third preset step-length reduction
The current input power；It is pre- with the third when the dynamic current is less than the minimum value of the third preset range value
If step-length increases the current input power.
Optionally, which can also include: monitoring module 60, which includes:
First determination unit 601, for determining the second grid voltage after adjusting and the input power after the adjusting；
Second determination unit 602, for determining institute according to the input power after the second grid voltage and the adjusting
State the current dynamic current of power amplifier；
Judging unit 603, for judging whether the current dynamic current is in the 4th preset range value；
Adjustment unit 604, for when the current dynamic current is not in the 4th preset range, by described
Two grid voltages are adjusted to zero, and close the rf modulated signal.
The calibrating installation of power amplifier provided in this embodiment can execute the embodiment of the above method, realize former
Reason is similar with technical effect, and details are not described herein.
Figure 12 is a kind of structural schematic diagram of computer equipment provided in an embodiment of the present invention.As shown in figure 12, it shows
Suitable for being used to realize the structural schematic diagram of the terminal device of the embodiment of the present application or the computer system 500 of server.
As shown in figure 12, computer system 500 includes central processing unit (CPU) 501, can be read-only according to being stored in
Program in memory (ROM) 502 or be loaded into the program in random access storage device (RAM) 503 from storage section 508 and
Execute various movements appropriate and processing.In RAM503, also it is stored with system 500 and operates required various programs and data.
CPU501, ROM502 and RAM603 are connected with each other by bus 504.Input/output (I/O) interface 506 is also connected to bus
504。
I/O interface 505 is connected to lower component: the importation 506 including keyboard, mouse etc.；It is penetrated including such as cathode
The output par, c 507 of spool (CRT), liquid crystal display (LCD) etc. and loudspeaker etc.；Storage section 508 including hard disk etc.；
And the communications portion 509 of the network interface card including LAN card, modem etc..Communications portion 509 via such as because
The network of spy's net executes communication process.Driver 510 is also connected to I/O interface 506 as needed.Detachable media 511, such as
Disk, CD, magneto-optic disk, semiconductor memory etc. are mounted on as needed on driver 510, in order to read from thereon
Computer program be mounted into storage section 508 as needed.
Particularly, in accordance with an embodiment of the present disclosure, it may be implemented as computer above with reference to Fig. 4-10 process described
Software program.For example, embodiment of the disclosure includes a kind of computer program product comprising be tangibly embodied in machine readable
Computer program on medium, the computer program include the program code for executing the method for Fig. 4-10.Such
In embodiment, which can be downloaded and installed from network by communications portion 509, and/or is situated between from detachable
Matter 511 is mounted.
Flow chart and block diagram in attached drawing are illustrated according to the system of various embodiments of the invention, method and computer journey
The architecture, function and operation in the cards of sequence product.In this regard, each box in flowchart or block diagram can generation
A part of one module, program segment or code of table, a part of aforementioned modules, program segment or code include one or more
Executable instruction for implementing the specified logical function.It should also be noted that in some implementations as replacements, institute in box
The function of mark can also occur in a different order than that indicated in the drawings.For example, two boxes succeedingly indicated are practical
On can be basically executed in parallel, they can also be executed in the opposite order sometimes, and this depends on the function involved.Also it wants
It is noted that the combination of each box in block diagram and or flow chart and the box in block diagram and or flow chart, Ke Yiyong
The dedicated hardware based system of defined functions or operations is executed to realize, or can be referred to specialized hardware and computer
The combination of order is realized.
Being described in the embodiment of the present application involved unit or module can be realized by way of software, can also be with
It is realized by way of hardware.Described unit or module also can be set in the processor, for example, can be described as:
A kind of processor includes closedown module, correcting current module, opening module and calibration of power module.Wherein, these units or
The title of module does not constitute the restriction to the unit or module itself under certain conditions, for example, correcting current module may be used also
Be described as " for the grid voltage by adjusting the power amplifier, to the quiescent current of the power amplifier into
Row calibration ".
As on the other hand, present invention also provides a kind of computer readable storage medium, the computer-readable storage mediums
Matter can be computer readable storage medium included in aforementioned device in above-described embodiment；It is also possible to individualism, not
The computer readable storage medium being fitted into equipment.Computer-readable recording medium storage has one or more than one journey
Sequence, foregoing routine are used to execute the calibration side for being described in the power amplifier of the application by one or more than one processor
Method.
In conclusion a kind of calibration circuit of power amplifier provided in an embodiment of the present invention, method, method, apparatus, setting
Standby and readable storage medium storing program for executing closes the rf modulated signal of power amplifier, right by the grid voltage of regulation power amplifier
The quiescent current of power amplifier is calibrated, and opens the rf modulated signal of power amplifier, is amplified by regulation power
The input power of device calibrates the output power of power amplifier.The technical program can exclude other in calibration circuit
Influence of the current drain device to current detecting, therefore can be improved the calibration accuracy of quiescent current, and be not necessary to additional
Test equipment, the calibration of power amplifier quiescent electric current and output power can be realized simultaneously, so that checking procedure is simpler
Folk prescription is just.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (13)
1. a kind of calibration circuit of power amplifier, which is characterized in that the calibration circuit includes: micro-control unit MCU, power
Amplifier, current sample detection resistance and current detecting chip, in which:
The drain electrode input terminal of the power amplifier is connected with one end of the current sample detection resistance, the power amplification
The gate input of device is connect with the digital-to-analogue conversion interface of the MCU, and the output end of the current detecting chip is with the MCU's
Analog-to-digital conversion interface is connected, and the input terminal of the current detecting chip is connected with the both ends of the current sample detection resistance
It connects.
2. a kind of calibration method for the power amplifier that the calibration circuit based on power amplifier described in claim 1 is realized,
It is characterized in that, which comprises
Close the rf modulated signal of the power amplifier；
The grid voltage for adjusting the power amplifier calibrates the quiescent current of the power amplifier；
Open the rf modulated signal of the power amplifier；
The input power for adjusting the power amplifier calibrates the output power of the power amplifier.
3. the calibration method of power amplifier according to claim 2, which is characterized in that described by adjusting the power
The grid voltage of amplifier calibrates the quiescent current of the power amplifier, comprising:
Circulation executes the first specified operation, until the first quiescent current of the power amplifier is in the first preset range value
Until；
Described first specified operation includes:
According to the first current Gate-voltage of the power amplifier, the first quiescent current is determined；Wherein, the described first specified behaviour
When making to execute for the first time, first current Gate-voltage is initial gate voltage, and the described first specified operation non-first time is held
When row, first current Gate-voltage specifies the first grid after the adjusting for operating and obtaining when preceding primary execution for described first
Voltage；
Judge whether first quiescent current is in the first preset range value；
When first quiescent current is not in first preset range value, first current Gate-voltage is carried out
It adjusts, the primary grid voltage after being adjusted, and controls into the next time described first specified operation；
When first quiescent current is in the first preset range value, control does not enter the described first specified behaviour next time
Make.
4. the calibration method of power amplifier according to claim 3 works as front gate according to the first of the power amplifier
Pole tension determines first quiescent current, comprising:
Obtain the output voltage of the current detecting chip；The output voltage and first current Gate-voltage are at positive
It closes；
According to formula Ids=Vout/ (Gain*Rsense), the first quiescent current of the power amplifier is determined；Wherein, Ids
For the first quiescent current of the power amplifier, Vout is the output voltage of the current detecting chip, and Gain is the electricity
The gain of detection chip is flowed, Rsense is the resistance value of the current sample detection resistance.
5. the calibration method of power amplifier according to claim 3, which is characterized in that when first quiescent current not
When in first preset range value, the current Gate-voltage value is adjusted, the first grid after being adjusted
Voltage, comprising:
When first quiescent current is greater than the maximum value of first preset range value, described in the reduction of the first preset step-length
First current Gate-voltage；
When first quiescent current is less than the minimum value of first preset range value, with first preset step-length increase
First current Gate-voltage.
6. the calibration method of power amplifier according to claim 3, which is characterized in that it is specified that the circulation executes first
Operation, until the first quiescent current of the power amplifier be in the first preset range value it is interior until after, the method is also
Include:
Circulation executes the second specified operation, until the second quiescent current of the power amplifier is in the second preset range value
Until；Wherein:
Described second specified operation includes:
According to the second current Gate-voltage of the power amplifier, the second quiescent current is determined；Described second specified operation the
When primary execution, second current Gate-voltage is the primary grid voltage after the adjusting, and the described second specified operation is non-
When executing for the first time, second current Gate-voltage is the second grid voltage after the adjusting；
Judge whether second quiescent current is in second preset range value；In second preset range value most
Big value is less than the maximum value in first preset range value；Minimum value in second preset range value is greater than described first
Minimum value in preset range value；
When second quiescent current is not in second preset range value, second current Gate-voltage is carried out
It adjusts, the second grid voltage after being adjusted, and controls into the next time described second specified operation；
When second quiescent current is in second preset range value, control does not enter described second specifies next time
Operation.
7. the calibration method of power amplifier according to claim 6, which is characterized in that when second quiescent current not
When in second preset range value, second current Gate-voltage is adjusted, the second gate after being adjusted
Pole tension, comprising:
When second quiescent current is greater than the maximum value of second preset range value, with second preset step-length reduction
Second current Gate-voltage；Second preset step-length is less than first preset step-length；
When second quiescent current is less than the minimum value of second preset range value, with second preset step-length increase
Second current Gate-voltage.
8. the calibration method of power amplifier according to claim 2, which is characterized in that by adjusting the power amplification
The input power of device calibrates the output power of the power amplifier, comprising:
Circulation executes the specified operation of third, until the dynamic current of the power amplifier is in third preset range value and is
Only；
The third specifies to operate
According to the current input power of the power amplifier, dynamic current is determined；The specified operation of the third executes for the first time
When, the current input power is initial input power, when the third operation non-first time executes, the current input power
Input power after the adjusting obtained when primary execution preceding for the specified operation of the third；
Judge whether the dynamic current is in third preset range value；
When the dynamic current is not in third preset range value, the current input power is adjusted, is adjusted
Input power after section, and control into the specified operation of third next time；
When the dynamic current is within the scope of third predetermined threshold value, control does not enter the specified operation of the third next time.
9. the calibration method of power amplifier according to claim 8, which is characterized in that when the dynamic current is not at
When in third preset range value, the current input power is adjusted, the input power after being adjusted, comprising:
When the dynamic current is greater than the maximum value of the third preset range value, described in third preset step-length reduction
Current input power；
When the dynamic current is less than the minimum value of the third preset range value, described in third preset step-length increase
Current input power.
10. the calibration method of power amplifier according to claim 5, which is characterized in that the method also includes:
Determine the second grid voltage after adjusting and the input power after the adjusting；
According to the input power after the second grid voltage and the adjusting, the current dynamic electric of the power amplifier is determined
Stream；
Judge whether the current dynamic current is in the 4th preset range value；
When the current dynamic current is not in the 4th preset range, the second grid voltage is adjusted to zero,
And close the rf modulated signal.
11. a kind of calibrating installation of power amplifier, which is characterized in that described device includes:
Closedown module is configured to close the rf modulated signal of the power amplifier；
Correcting current module is configured to adjust the grid voltage of the power amplifier, to the power amplifier
Quiescent current is calibrated；
Opening module is configured to open the rf modulated signal of the power amplifier；
Calibration of power module is configured to adjust the input power of the power amplifier, to the power amplifier
Output power is calibrated.
12. a kind of equipment, including memory and processor, the memory are stored with computer program, which is characterized in that described
Processor realizes any one of claim 2~9 the method when executing the computer program.
13. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
Any one of claim 2~9 the method is realized when being executed by processor.
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| CN114094949A (en) * | 2021-11-12 | 2022-02-25 | 中国电子科技集团公司第二十九研究所 | Universal amplifier initialization circuit, device and method |
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