CN109088606A - A kind of power amplifier quiescent current method of adjustment, device, system and storage medium - Google Patents
A kind of power amplifier quiescent current method of adjustment, device, system and storage medium Download PDFInfo
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- CN109088606A CN109088606A CN201710454241.7A CN201710454241A CN109088606A CN 109088606 A CN109088606 A CN 109088606A CN 201710454241 A CN201710454241 A CN 201710454241A CN 109088606 A CN109088606 A CN 109088606A
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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
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
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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
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Abstract
The invention discloses a kind of power amplifier quiescent current method of adjustment, device, system and storage mediums, belong to wireless communication technique field.The described method includes: obtaining the sample rate current AD value of the drain current of the power amplifier of neutral gear phase acquisition of the sample circuit in downlink signal when downlink signal is in the neutral gear phase；Judge whether the sample rate current AD value is equal with calibration target current AD value；If unequal, the grid voltage of the power amplifier is adjusted, to realize the adjustment of power amplifier quiescent current.It using the present invention, eliminates the temperature sensor on power amplifier and reduces the size of power amplifier, while eliminating most of offline parameter file, so that the correlation of power amplifier and offline parameter substantially reduces, reduce rate of breakdown.
Description
Technical field
The present invention relates to wireless communication technique field more particularly to a kind of power amplifier quiescent current methods of adjustment, device, system
And storage medium.
Background technique
In wireless base station, power amplifier determines performance of the signal chains in terms of power consumption, the linearity, efficiency and cost.It is practical
In, radio-frequency power amplifier unit/transceiver unit can with the time, temperature, etc. external environments change and change from
The electrical parameter of body.New device has been used to cause to linear, effect using new radio-frequency power amplifier unit with new material
More stringent requirements are proposed for rate, and these parameters can then change with the variation of external environment, so as to cause parameter, index
Variation.Simultaneously in order to meet the grid voltage adjustment in commercial stage, generally requires a large amount of offline parameter and be used as reference and target letter
Breath is stored in internal system, thus these files have vital effect.
In the prior art, the method for above-mentioned parameter compensation is: file is written in power amplifier parameter by previous experiments and is stored
In board for receiving and sending message, in actual use, by calling the power amplifier parameter (i.e. offline parameter) prestored, periodically to function
It puts the adjustment of row voltage into, radio-frequency power amplifier unit is enabled to always work in most reasonable quiescent point.This side
Method controls digital analog converter by the operation of the softwares such as micro-control unit (Micro Control Unit, MCU) operating system
The output of (Digital to analog converter, DAC), so that DAC is output to power amplifier tube grid and is in required voltage
State.This mode due to high degree of automation, productibility is good, human intervention factor is few and has obtained universal application.
Although the method for this static compensation makes product have self certain adjustment function, the ginseng of static compensation
What number used is all " offline parameter " (the power amplifier parameter obtained by previous experiments), and the sample limitation tested and atypia
Property face bulk article during inevitably there is the inconsistent of parameter, will lead to performance even function loss.Meanwhile it producing
Self this adjustment of product is confined in " offline parameter " that has been written into, if mistake occur in these " offline parameters ", is such as passed
Mistake in passing will lead to catastrophic consequence.
In addition temperature is to lead to the maximum extraneous factor of Parameters variation, can be by penetrating in current product use process
Temperature sensor on frequency Power Amplifier Unit obtains Current Temperatures and is carried out by the temperature that the temperature sensor obtains
Parameter compensation still for the radio-frequency power amplifier unit increasingly minimized, increases temperature sensor and not only increases
Cost, also increases the volume of radio-frequency power amplifier unit, tends to the design concept of miniaturization not with current electronic device
Symbol.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of power amplifier quiescent current method of adjustment, device, system and storages
Medium, to solve, prior art power amplifier static compensation rate of breakdown is high, needs to be arranged temperature sensor leads to electronic equipment body
The problem of long-pending and increased costs.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem:
According to the first aspect of the invention, a kind of power amplifier quiescent current method of adjustment is provided, which comprises
When downlink signal is in the neutral gear phase, the power amplifier that sample circuit is acquired in the neutral gear phase of downlink signal is obtained
Drain current sample rate current AD value；
Judge whether the sample rate current AD value is equal with calibration target current AD value；
If unequal, the grid voltage of the power amplifier is adjusted, to realize the adjustment of power amplifier quiescent current.
Preferably, the method also includes:
The starting point and end point of the neutral gear phase of downlink signal are monitored, when the neutral gear phase is the protection of the downlink signal
Gap closes time slot；
When monitoring that the neutral gear phase starts, the drain electrode electricity that the sample circuit acquires the power amplifier is controlled
Stream, and obtain the electric current AD value of the sample circuit output；
At the end of monitoring the neutral gear phase, the drain current that the ADC stops acquiring the power amplifier is controlled.
Preferably, when the adjustment period of quiescent current adjustment is a neutral gear phase, the acquisition sample circuit is in downlink
The sample rate current AD value of the drain current of the power amplifier acquired in the neutral gear phase of signal, comprising:
The electric current AD value that the sample circuit is exported in the current neutral gear phase is read, the electric current AD value is sample rate current AD
Value；
When the adjustment period is multiple neutral gear phases, the acquisition sample circuit acquires within the neutral gear phase of downlink signal
Power amplifier drain current sample rate current AD value, comprising:
The electric current AD value that the sample circuit is exported in multiple neutral gear phases is read, to the electric current of output of the multiple neutral gear phase
AD value carries out Integral Processing, average value processing or root mean square processing, obtains sample rate current AD value.
Preferably, the method also includes:
At least one set of target current information stored in memory is obtained in advance；
Wherein, at least one set of target current information includes calibration target current AD value n, debugging stair step current AD value
AD1 and AD1 corresponds to grid voltage n, and wherein n is the integer greater than 1.
Preferably, the grid voltage of the power amplifier is adjusted, comprising:
Adjustment grid voltage is calculated, wherein
The output voltage of corresponding digital analog converter DAC is adjusted according to the adjustment grid voltage, to realize the function
The adjustment of the grid voltage of rate amplifier.
According to the second aspect of the invention, a kind of power amplifier Static Electro flow adjusting device is provided, described device includes:
Processing module is adopted for when downlink signal is in the neutral gear phase, obtaining sample circuit in the neutral gear phase of downlink signal
The sample rate current AD value of the drain current of the power amplifier of collection, and judge whether the sample rate current AD value is electric with calibration target
It is equal to flow AD value；
Control module, for adjusting institute when whether the sample rate current AD value is unequal with calibration target current AD value
The grid voltage of power amplifier is stated, to realize the adjustment of power amplifier quiescent current.
Preferably, described device further include:
Trigger module, the starting point and end point of the neutral gear phase for monitoring downlink signal, under the neutral gear phase is described
The protection time slot of row signal closes time slot；
The processing module is also used to when monitoring that the neutral gear phase starts, and is controlled described in the sample circuit acquisition
The drain current of power amplifier, and the electric current AD value of the sample circuit output is obtained, and for monitoring the sky
At the end of working days, the drain current that the ADC stops acquiring the power amplifier is controlled.
Preferably, the processing module is also used to read when the adjustment period that quiescent current adjusts is a neutral gear phase
The electric current AD value that the sample circuit is exported in the current neutral gear phase, the electric current AD value are sample rate current AD value；Or
The processing module is also used to read the sample circuit more when the adjustment period is multiple neutral gear phases
The electric current AD value of a neutral gear phase output carries out Integral Processing, average value processing to the electric current AD value of output of the multiple neutral gear phase
Or root mean square processing, obtain sample rate current AD value.
Preferably, described device further include:
Data obtaining module, for obtaining at least one set of target current information stored in memory in advance, wherein described
At least one set of target current information corresponds to grid voltage including calibration target current AD value n, debugging stair step current AD value AD1 and AD1
N, wherein n is the integer greater than 1.
Preferably, the processing module is also used to calculate adjustment grid voltage according to following formula:
The control module is also used to adjust the output of corresponding digital analog converter DAC according to the adjustment grid voltage
Voltage, to realize the adjustment of the grid voltage of the power amplifier.
According to the third aspect of the present invention, a kind of power amplifier quiescent current adjustment system is provided, the system comprises:
Sample circuit, for the drain current of the neutral gear phase acquisition power amplifier in downlink signal, and to drain current
It is AD converted；
Power amplifier Static Electro flow adjusting device as described in second aspect, for being adopted described in the neutral gear phase acquisition in downlink signal
The sample rate current AD value of sample circuit, and adjust according to sample rate current AD value the grid voltage of the power amplifier.
According to the fourth aspect of the present invention, a kind of storage medium is provided, the storage medium includes the program of storage,
In, equipment where controlling the storage medium in described program operation executes operation described in first aspect.
Power amplifier quiescent current method of adjustment, device, system and the storage medium of the embodiment of the present invention acquire function in the neutral gear phase
The quiescent current of rate amplifier, and the grid voltage of power amplifier is adjusted, the quiescent current of power amplifier can be made to become
Change, because of the characteristic of downlink signal, can constantly be restrained to target value with very intensive adjustment rhythm, from
And guarantee the continuous convergence of power amplifier properties, so that power amplifier always works in a reasonable range, avoid
In the discrete brought performance loss of the device of equipment.Also, it eliminates the temperature sensor on power amplifier and reduces power amplification
The size of device more eliminates most of offline parameter file, so that the correlation of power amplifier and offline parameter substantially reduces, reduces
Rate of breakdown.
Detailed description of the invention
Fig. 1 is a kind of flow chart for power amplifier quiescent current method of adjustment that the embodiment of the present invention one provides；
Fig. 2 is that the processing module of power amplifier Static Electro flow adjusting device in the embodiment of the present invention one obtains the time slot of downlink signal
It originates, the schematic diagram of terminating point；
Fig. 3 is that the processing module of power amplifier Static Electro flow adjusting device in the embodiment of the present invention one obtains what downlink signal was closed
It originates, the schematic diagram of terminating point；
In the position Fig. 4 embodiment of the present invention one power amplifier Static Electro flow adjusting device processing module control current sampling circuit and
The schematic diagram of baseband rf signal；
Fig. 5 is the schematic diagram of the content of the target current information stored in memory in the embodiment of the present invention one；
Fig. 6 is a kind of modular structure schematic diagram of power amplifier Static Electro flow adjusting device provided by Embodiment 2 of the present invention；
Fig. 7 is the structural schematic diagram that a kind of power amplifier quiescent current that the embodiment of the present invention three provides adjusts system；
Fig. 8 is a kind of implementation of the sample circuit in the embodiment of the present invention three；
Another implementation of sample circuit in Fig. 9 embodiment of the present invention three.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
In order to be clearer and more clear technical problems, technical solutions and advantages to be solved, tie below
Drawings and examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
The embodiment of the present invention one provides a kind of power amplifier quiescent current method of adjustment, referring to Fig. 1, method flow includes:
S101, when downlink signal is in the neutral gear phase, obtain sample circuit downlink signal the neutral gear phase acquire power
The sample rate current AD value of the drain current of amplifier；
S102, judge whether sample rate current AD value is equal with calibration target current AD value；
If S103, unequal, the grid voltage of the power amplifier is adjusted, to realize the adjustment of power amplifier quiescent current.
In a feasible scheme, this method further include:
Monitor downlink signal the neutral gear phase starting point and end point, the neutral gear phase be the downlink signal protection time slot or
Close time slot；
When monitoring that the neutral gear phase starts, controls the sample circuit and acquire the drain current of the power amplifier, and obtain
The electric current AD value for taking the sample circuit to export；
At the end of monitoring the neutral gear phase, the drain current that the ADC stops acquiring the power amplifier is controlled.
In practical application, " the neutral gear phase " of downlink signal, the neutral gear phase can with when time division duplex (Time Division
Duplexing, TDD) protection GP time slot, be also possible to other downlink signals closing interruption.
Referring to Fig. 2, the trigger module of power amplifier Static Electro flow adjusting device obtains the uplink and downlink shut-in time of carrier signal:
I.e. when the neutral gear phase starts, (downlink signal closing) and neutral gear phase terminate notification processing module when (downlink signal opening).This implementation
In example, processing module can be the component for arbitrarily having processing function, such as central processing unit (Central Processing
Unit, CPU), microprocessor unit (Micro Processor Unit, MPU), digital signal processor (Digital
Signal Processing/Processor, DSP) etc..
Wherein, the type of downlink signal is also not limited to tdd mode, it can also be used to the time that any downlink signal is closed,
As long as by downgoing baseband signal-off starting point notifier processes device, as shown in Figure 3.
After getting the signal of downlink signal shutdown, controllable related hardware can be notified to carry out next step behaviour
Make, as shown in Figure 4: the drain current of control sample circuit acquisition power amplifier；Control baseband switch or power amplifier switch etc..
In practical application, in order to acquire more accurate drain current, time delay can be closed according to baseband signal, in baseband signal
One section of preset time is appropriately extended after closing, then starts the sampling for carrying out the drain current of power amplifier, in this process
If you need to control baseband switch, then the control time unification of baseband switch is deducted in the sampling time, but to be ensured
The remaining sampling time can guarantee the acquisition of drain current.
In practical application, after the starting point for obtaining the neutral gear phase, sample circuit can carry out multiple repairing weld according to sampling rate,
The data of multiple repairing weld can be handled by preset algorithm (modes such as integral, average, root mean square).
In a feasible scheme, when the adjustment period of quiescent current adjustment is a neutral gear phase, acquisition sampling
The sample rate current AD value of the drain current for the power amplifier that circuit acquires within the neutral gear phase of downlink signal, comprising:
The electric current AD value that the sample circuit is exported in the current neutral gear phase is read, electric current AD value is sample rate current AD value；
When the adjustment period is multiple neutral gear phases, function which acquires within the neutral gear phase of downlink signal
The sample rate current AD value of the drain current of rate amplifier, comprising:
The electric current AD value that the sample circuit is exported in multiple neutral gear phases is read, to the electric current AD value of output of multiple neutral gear phase
Integral Processing, average value processing or root mean square processing are carried out, sample rate current AD value is obtained.
Practical application kind, can downlink signal each neutral gear phase as an adjustment period, i.e., each neutral gear phase
All repeat the movement of step S101-S103；It can also be arranged every preset multiple neutral gear phases, once adjusted, adjusted
In complete cycle, the drain current of each neutral gear phase of the power amplifier in the adjustment period is acquired, then in the adjustment period
In the last one neutral gear it is interim, obtain sample rate current AD value, and execute the movement of step S102-S103.
In a feasible scheme, this method further include:
At least one set of target current information stored in memory is obtained in advance；
Wherein, which includes calibration target current AD value n, debugging stair step current AD value AD1
And AD1 corresponds to grid voltage n, wherein n is the integer greater than 1.
In practical application, in process of producing product, power amplifier is adjusted to one kind of needs by software configuration
Or several static working current, that is, target currents, and the information such as this one or several kinds of target current, debugging stepping are stored
To the storable element of product, such as EEPROM etc..
Specifically, can be calibrated target current to obtain calibration target current AD value, which can be one group
Or several groups (can be determined according to power grade or other element), and the target value is stored to memory device, if desired may be used
The corresponding grid voltage of target value is stored to memory device.It can be with by the target current AD value after the target current analogue value and calibration
Find out the corresponding AD stepping of minimum current stepping (i.e. debugging stair step current AD value AD1).As shown in figure 5, to be stored in memory
Target current information content citing.
In a feasible scheme, the grid voltage of the adjustment power amplifier, comprising:
Adjustment grid voltage is calculated, wherein
The output voltage of corresponding DAC is adjusted according to the adjustment grid voltage, to realize the tune of the grid voltage of the power amplifier
It is whole.
In practical application, which can be the DAC in sample circuit.
The power amplifier Static Electro flow adjusting device of the present embodiment closes shape since the interim base band of neutral gear in downlink signal is in
State, although be not turned off its electric current and can ignore, therefore, the quiescent current of power amplifier can be acquired in the neutral gear phase,
And the grid voltage of power amplifier is adjusted, the quiescent current of power amplifier can be made to change, due to the spy of downlink signal
Property, so can constantly be restrained to target value with very intensive adjustment rhythm, to guarantee power amplifier
The continuous convergence of energy avoids so that power amplifier always works in a reasonable range in the discrete institute of the device of equipment
Bring performance loss.And the size that the temperature sensor on power amplifier reduces power amplifier is eliminated, more eliminate
Most of offline parameter file reduces rate of breakdown so that the correlation of power amplifier and offline parameter substantially reduces.
On the basis of previous embodiment, second embodiment of the present invention provides a kind of power amplifier Static Electro flow adjusting devices, ask
Refering to Fig. 6, which includes:
Processing module 601, for when downlink signal is in the neutral gear phase, obtaining sample circuit in the neutral gear phase of downlink signal
The sample rate current AD value of the drain current of the power amplifier of acquisition, and judge whether sample rate current AD value is electric with calibration target
It is equal to flow AD value；
Control module 602, for when whether sample rate current AD value is unequal with calibration target current AD value, adjustment should
The grid voltage of power amplifier, to realize the adjustment of power amplifier quiescent current.
In a feasible scheme, the device further include:
Trigger module, the starting point and end point of the neutral gear phase for monitoring downlink signal, the neutral gear phase are downlink letter
Number protection time slot or close time slot；
The processing module 601 is also used to when monitoring that the neutral gear phase starts, and is controlled the sample circuit and is acquired the power and puts
The drain current of big device, and obtain the electric current AD value of sample circuit output, and at the end of monitoring the neutral gear phase,
Control the drain current that the ADC stops acquiring the power amplifier.
In practical application, " the neutral gear phase " of downlink signal.The neutral gear phase can be the GP time slot of TDD, can also be other downlinks
The interruption of signal-off.
After trigger module gets the signal of downlink signal shutdown, notification processing module controls related hardware to carry out down
Single stepping, as shown in Figure 4: the drain current of control sample circuit acquisition power amplifier；Control baseband switch etc..
In practical application, in order to acquire more accurate drain current, time delay can be closed according to baseband signal, in baseband signal
One section of preset time is appropriately extended after closing, then starts the sampling for carrying out the drain current of power amplifier, in this process
If you need to control baseband switch, then the control time unification of baseband switch is deducted in the sampling time, but to be ensured
The remaining sampling time can guarantee the acquisition of drain current.
In practical application, after the starting point for obtaining the neutral gear phase, sample circuit can carry out multiple repairing weld according to sampling rate,
At this point, processing module to the data of multiple repairing weld can be by preset algorithm (modes such as integral, average, root mean square) at
Reason.
In a feasible scheme, the processing module 601, the adjustment period for being also used to adjust in quiescent current is one
When the neutral gear phase, the electric current AD value that the sample circuit is exported in the current neutral gear phase is read, electric current AD value is sample rate current AD value；
Or
The processing module 601 is also used to read the sample circuit in multiple skies when the adjustment period is multiple neutral gear phases
The electric current AD value of working days output carries out Integral Processing to the electric current AD value of output of multiple neutral gear phase, average value is handled or square
Root processing, obtains sample rate current AD value.
Practical application kind, can downlink signal each neutral gear phase as an adjustment period；It can also be arranged
It every preset multiple neutral gear phases, is once adjusted, in the adjustment period, sample circuit acquires power amplifier in the adjustment
The drain current of each neutral gear phase in period, then the last one neutral gear in the adjustment period is interim, obtains sampling electricity
AD value is flowed, and executes and grid voltage is adjusted according to sample rate current AD value.
In a feasible scheme, the device further include:
Data obtaining module, for obtaining at least one set of target current information stored in memory in advance, wherein this is extremely
Few one group of target current information corresponds to grid voltage n including calibration target current AD value n, debugging stair step current AD value AD1 and AD1,
Wherein n is the integer greater than 1.
In practical application, in process of producing product, power amplifier is adjusted to one kind of needs by software configuration
Or several static working current, that is, target currents, and the information such as this one or several kinds of target current, debugging stepping are stored
To the storable element of product, such as EEPROM etc..
Specifically, can be calibrated target current to obtain calibration target current AD value, which can be one group
Or several groups (can be determined according to power grade or other element), and the target value is stored to memory device, if desired may be used
The corresponding grid voltage of target value is stored to memory device.It can be in the hope of by target current AD value after the target current analogue value and calibration
The corresponding AD stepping of minimum current stepping (i.e. debugging stair step current AD value AD1) out.As shown in figure 5, being to be stored in memory
The citing of the content of target current information.
In a feasible scheme, which is also used to calculate adjustment grid voltage according to following formula:
The control module 602 is also used to adjust the output electricity of corresponding digital analog converter DAC according to the adjustment grid voltage
Pressure, to realize the adjustment of the grid voltage of the power amplifier.
In practical application, which can be the DAC in sample circuit.
The power amplifier quiescent current method of adjustment of the present embodiment closes shape since the interim base band of neutral gear in downlink signal is in
State, although be not turned off its electric current and can ignore, therefore, the quiescent current of power amplifier can be acquired in the neutral gear phase,
And the grid voltage of power amplifier is adjusted, the quiescent current of power amplifier can be made to change, due to the spy of downlink signal
Property, so can constantly be restrained to target value with very intensive adjustment rhythm, to guarantee power amplifier
The continuous convergence of energy avoids so that power amplifier always works in a reasonable range in the discrete institute of the device of equipment
Bring performance loss.And the size that the temperature sensor on power amplifier reduces power amplifier is eliminated, more eliminate
Most of offline parameter file reduces rate of breakdown so that the correlation of power amplifier and offline parameter substantially reduces.
On the basis of the above embodiments, the embodiment of the present invention three provides a kind of power amplifier quiescent current adjustment, please refers to
Fig. 7, the system include:
Sample circuit 701, for the drain current of the neutral gear phase acquisition power amplifier in downlink signal, and to drain electrode electricity
Stream is AD converted；
Power amplifier Static Electro flow adjusting device 702 obtains the sampling of the sample circuit 701 for the neutral gear phase in downlink signal
Electric current AD value, and adjust according to sample rate current AD value the grid voltage of the power amplifier.
The structure of power amplifier Static Electro flow adjusting device in the structure and embodiment two of the power amplifier Static Electro flow adjusting device 702
Identical, details are not described herein again.
Referring to Fig. 8, sample circuit 701 includes the drain current sampling resistor 7011 being connected in power amplifier drain electrode
And the adc circuit 7013 being connect between the drain current sampling resistor 7011 by operational amplifier 7012, the ADC7013
Electric current for sampling drain current sampling resistor 7011 is AD converted, and is exported and given power amplifier Static Electro flow adjusting device
702 processing module.
It is another way of example of sample circuit 701 please continue to refer to Fig. 9, which includes being connected to
Drain current sampling resistor 7011 in power amplifier drain electrode and the adc circuit 7013 ' with connection.
Adc circuit 7013 ' includes operational amplifier 7015, holding circuit 7016, comparator 7017, N DAC7018, N
Register and control circuit.In sampling process, the drain current of drain current sampling resistor acquisition is through operational amplifier
7015,7016 input comparator 7017 of holding circuit, compared its 7017 be AD converted after, and via control circuit and N
Register is exported to power amplifier Static Electro flow adjusting device 702.When power amplifier Static Electro flow adjusting device 702 needs to adjust power amplification
When the quiescent current of device, then by adjusting the grid voltage of the output voltage adjustment adjustment power amplifier of N-bit register DAC, thus
Achieve the purpose that adjust quiescent current.
The power amplifier quiescent current method of adjustment of the present embodiment closes shape since the interim base band of neutral gear in downlink signal is in
State, although be not turned off its electric current and can ignore, therefore, the quiescent current of power amplifier can be acquired in the neutral gear phase,
And the grid voltage of power amplifier is adjusted, the quiescent current of power amplifier can be made to change, due to the spy of downlink signal
Property, so can constantly be restrained to target value with very intensive adjustment rhythm, to guarantee power amplifier
The continuous convergence of energy avoids so that power amplifier always works in a reasonable range in the discrete institute of the device of equipment
Bring performance loss.And the size that the temperature sensor on power amplifier reduces power amplifier is eliminated, more eliminate
Most of offline parameter file reduces rate of breakdown so that the correlation of power amplifier and offline parameter substantially reduces.
On the basis of previous embodiment, the embodiment of the present invention four provides a kind of storage medium, which includes
The program of storage, equipment where controlling the storage medium in program operation execute the operation such as embodiment one.
Preferred embodiments of the present invention have been described above with reference to the accompanying drawings, not thereby limiting the scope of the invention.This
Field technical staff without departing from the scope and spirit of the invention in made by any modifications, equivalent replacements, and improvements, should all this
Within the interest field of invention.
Claims (12)
1. a kind of power amplifier quiescent current method of adjustment, which is characterized in that the described method includes:
When downlink signal is in the neutral gear phase, the leakage of the power amplifier of neutral gear phase acquisition of the sample circuit in downlink signal is obtained
The sample rate current AD value of electrode current；
Judge whether the sample rate current AD value is equal with calibration target current AD value；
If unequal, the grid voltage of the power amplifier is adjusted, to realize the adjustment of power amplifier quiescent current.
2. the method as described in claim 1, which is characterized in that the method also includes:
Monitor downlink signal the neutral gear phase starting point and end point, the neutral gear phase be the downlink signal protection time slot or
Close time slot；
When monitoring that the neutral gear phase starts, the drain current that the sample circuit acquires the power amplifier is controlled, and
Obtain the electric current AD value of the sample circuit output；
At the end of monitoring the neutral gear phase, the drain current that the ADC stops acquiring the power amplifier is controlled.
3. method according to claim 2, which is characterized in that when quiescent current adjustment the adjustment period be a neutral gear phase
When, the sample rate current AD of the drain current for obtaining the power amplifier that sample circuit acquires within the neutral gear phase of downlink signal
Value, comprising:
The electric current AD value that the sample circuit is exported in the current neutral gear phase is read, the electric current AD value is sample rate current AD value；
When the adjustment period is multiple neutral gear phases, the function for obtaining sample circuit and being acquired within the neutral gear phase of downlink signal
The sample rate current AD value of the drain current of rate amplifier, comprising:
The electric current AD value that the sample circuit is exported in multiple neutral gear phases is read, to the electric current AD value of output of the multiple neutral gear phase
Integral Processing, average value processing or root mean square processing are carried out, sample rate current AD value is obtained.
4. method as described in any one of claims 1 to 3, which is characterized in that the method also includes:
At least one set of target current information stored in memory is obtained in advance；
Wherein, at least one set of target current information include calibration target current AD value n, debug stair step current AD value AD1 with
And AD1 corresponds to grid voltage n, wherein n is the integer greater than 1.
5. method as claimed in claim 4, which is characterized in that the grid voltage of the adjustment power amplifier, comprising:
Adjustment grid voltage is calculated, wherein
The output voltage of corresponding digital analog converter DAC is adjusted according to the adjustment grid voltage, to realize that the power is put
The adjustment of the grid voltage of big device.
6. a kind of power amplifier Static Electro flow adjusting device, which is characterized in that described device includes:
Processing module, for when downlink signal is in the neutral gear phase, obtaining neutral gear phase acquisition of the sample circuit in downlink signal
The sample rate current AD value of the drain current of power amplifier, and judge the sample rate current AD value whether with calibration target current AD
It is worth equal；
Control module, for adjusting the function when whether the sample rate current AD value is unequal with calibration target current AD value
The grid voltage of rate amplifier, to realize the adjustment of power amplifier quiescent current.
7. device as claimed in claim 6, which is characterized in that described device further include:
Trigger module, the starting point and end point of the neutral gear phase for monitoring downlink signal, the neutral gear phase are downlink letter
Number protection time slot or close time slot；
The processing module is also used to when monitoring that the neutral gear phase starts, and is controlled the sample circuit and is acquired the power
The drain current of amplifier, and the electric current AD value of the sample circuit output is obtained, and for monitoring the neutral gear phase
At the end of, control the drain current that the ADC stops acquiring the power amplifier.
8. device as claimed in claim 7, which is characterized in that the processing module is also used to the tune adjusted in quiescent current
When complete cycle is a neutral gear phase, the electric current AD value that the sample circuit is exported in the current neutral gear phase, the electric current AD value are read
As sample rate current AD value；Or
The processing module is also used to read the sample circuit in multiple skies when the adjustment period is multiple neutral gear phases
The electric current AD value of working days output carries out Integral Processing to the electric current AD value of output of the multiple neutral gear phase, average value is handled or equal
Root processing, obtains sample rate current AD value.
9. such as the described in any item devices of claim 6 to 8, which is characterized in that described device further include: data obtaining module,
For obtaining at least one set of target current information stored in memory in advance, wherein at least one set target current information
Grid voltage n is corresponded to including calibration target current AD value n, debugging stair step current AD value AD1 and AD1, wherein n is the integer greater than 1.
10. device as claimed in claim 9, which is characterized in that the processing module is also used to calculate according to following formula and adjust
Whole grid voltage:
The control module is also used to adjust the output voltage of corresponding digital analog converter DAC according to the adjustment grid voltage,
To realize the adjustment of the grid voltage of the power amplifier.
11. a kind of power amplifier quiescent current adjusts system, which is characterized in that the system comprises:
Sample circuit for the drain current of the neutral gear phase acquisition power amplifier in downlink signal, and carries out drain current
AD conversion；
Such as the described in any item power amplifier Static Electro flow adjusting devices of claim 6 to 10, obtained for the neutral gear phase in downlink signal
The sample rate current AD value of the sample circuit is taken, and adjusts the grid voltage of the power amplifier according to sample rate current AD value.
12. a kind of storage medium, which is characterized in that the computer-readable recording medium storage has one or more program,
One or more of programs can be executed by one or more processor, to realize as described in claim any one of 1-5
The step of.
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| CN201710454241.7A CN109088606A (en) | 2017-06-14 | 2017-06-14 | A kind of power amplifier quiescent current method of adjustment, device, system and storage medium |
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| CN112710907A (en) * | 2019-10-24 | 2021-04-27 | 苏州华太电子技术有限公司 | Power amplifier test method, power amplifier test system and computer readable storage medium |
| 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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