CN104660188B - A kind of control method of envelop following technology, device and electronic equipment - Google Patents
A kind of control method of envelop following technology, device and electronic equipment Download PDFInfo
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- CN104660188B CN104660188B CN201510092906.5A CN201510092906A CN104660188B CN 104660188 B CN104660188 B CN 104660188B CN 201510092906 A CN201510092906 A CN 201510092906A CN 104660188 B CN104660188 B CN 104660188B
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Abstract
This application provides a kind of control method of envelop following technology, device and electronic equipment, after proportional arrangement parameter being determined according to the work at present frequency range and operating temperature of acquired electronic equipment, ratio control voltage is determined according to the current output voltage of the proportional arrangement parameter and the Switching Power Supply of the electronic equipment, afterwards, the output impedance of power amplifier based on ratio control voltage dynamic adjustment electronic equipment, it is determined that suitable voltage-controlled matching network, so as to ensure power amplifier steady operation.
Description
Technical field
The invention mainly relates to the envelop following technology field in electronic equipment, more particularly to a kind of envelope with
Control method, device and the electronic equipment of track technology.
Background technology
Nowadays, in order to save the power consumption of the electronic equipments such as mobile phone, notebook, envelop following technology has been widely used in electricity
Sub- equipment.In actual applications, it is necessary to which the output voltage real-time tracking transceiver transmitting of the Switching Power Supply of electronic equipment is penetrated
The change of frequency signal envelope, in this process, in order to avoid envelope signal distortion, usually require that the output voltage of Switching Power Supply is believed
Number bandwidth be 3~5 times of radiofrequency signal bandwidth.On the other hand, it is typically by the output decoupling capacitor of Switching Power Supply in the prior art
Volume controlled in 100pF magnitudes, to ensure that the harmonic wave of the envelope signal of switch power source output voltage is not filtered out, envelope signal
Will not distortion.
However, it has been found that because power amplifier is powered by Switching Power Supply, thus, when switching voltage exports electricity
When the quick change of pressure or power amplifier load impedance variations or temperature change, the stabilization of power amplifier will be all influenceed
Property, so as to cause the transmitter in transceiver can not reliably working.
The content of the invention
In view of this, the invention provides a kind of control method of envelop following technology, apparatus and system, power is realized
The steady operation of amplifier, so as to ensure that the reliability of the work of the transmitter in transceiver.
To achieve these goals, this application provides following technical scheme：
A kind of control method of envelop following technology, applied to electronic equipment, methods described includes：
Proportional arrangement parameter is determined according to the work at present frequency range of the acquired electronic equipment and current operating temperature；
According to the current output of the proportional arrangement parameter and the Switching Power Supply of the electronic equipment based on envelope signal
Voltage determines ratio control voltage；
The output impedance of the power amplifier of the electronic equipment is adjusted according to the ratio control voltage.
Preferably, after the determination ratio control voltage, the power amplifier of the adjustment electronic equipment
Before output impedance, methods described also includes：
LPF is carried out to the ratio control voltage.
Preferably, methods described also includes：
Detect the current operation mode of the electronic equipment；
When the current operation mode is row mode on fdd mode or TDD, the work at present of the electronic equipment is obtained
Frequency range and current operating temperature.
Preferably, the work at present frequency range of the electronic equipment acquired in the basis and operating temperature determine that ratio is matched somebody with somebody
Putting parameter is specially：
Working frequency range and operating temperature and the proportional arrangement relation table of proportional arrangement parameter based on the electronic equipment to prestore
Electronic equipment, it is determined that with the work at present frequency range and the one-to-one proportional arrangement parameter of the current operating temperature.
Preferably, it is described that envelope signal is based on according to the proportional arrangement parameter and the Switching Power Supply of the electronic equipment
Current output voltage determine that ratio control voltage includes：
Within the preset configuration time, the electronic equipment is configured according to the proportional arrangement parameter；
Determined according to current output voltage of the Switching Power Supply of the electronic equipment based on envelope signal with the electronics postponed
The ratio control voltage of equipment output.
Preferably, it is described within the preset configuration time, the electronic equipment is matched somebody with somebody according to the proportional arrangement parameter
Put including：
Detection current time whether be the electronic equipment subframe start before transient state during；
If so, the electronic equipment is configured according to the proportional arrangement parameter；
If it is not, wait next subframe to start, and during the transient state before next subframe starts, according to the ratio
Example configuration parameter configures to the electronic equipment.
A kind of control device of envelop following technology, applied to electronic equipment, described device includes：
First determining unit, for the work at present frequency range and current operating temperature according to the acquired electronic equipment
Determine proportional arrangement parameter；
Second determining unit, for being based on bag according to the Switching Power Supply of the proportional arrangement parameter and the electronic equipment
The current output voltage of network signal determines ratio control voltage；
Adjustment unit, hindered for adjusting the output of power amplifier of the electronic equipment according to the ratio control voltage
It is anti-.
Preferably, described device also includes：
Low-pass filter unit, for carrying out LPF to the ratio control voltage.
Preferably, described device also includes：
First detection unit, for detecting the current operation mode of the electronic equipment；
Acquiring unit, for when the current operation mode is row mode on fdd mode or TDD, obtaining the electronics
The work at present frequency range and current operating temperature of equipment.
Preferably, first determining unit is specifically used for working frequency range and operating temperature based on the electronic equipment to prestore
With the proportional arrangement relation table of proportional arrangement parameter, it is determined that with a pair of the work at present frequency range and the current operating temperature 1
The proportional arrangement parameter answered.
Preferably, the second determining unit includes：
Dispensing unit, within the preset configuration time, being carried out according to the proportional arrangement parameter to the electronic equipment
Configuration；
3rd determining unit, for current output voltage of the Switching Power Supply according to the electronic equipment based on envelope signal
It is determined that the ratio control voltage with the electronic equipment output postponed.
Preferably, the dispensing unit includes：
Second detection unit, for detect current time whether be the electronic equipment subframe start before transient period
Between；
Subelement is configured, for when the testing result of second detection unit is is, joining according to the proportional arrangement
It is several that the electronic equipment is configured；
Etc. subelement to be configured, for when the testing result of second detection unit is no, waiting next subframe
Start, and during the transient state before next subframe starts, the electronic equipment is entered according to the proportional arrangement parameter
Row configuration.
A kind of electronic equipment, including processor, Switching Power Supply, transceiver, power amplifier and voltage-controlled matching network, institute
Processor is stated to be used to determine proportional arrangement according to the work at present frequency range and current operating temperature of the acquired electronic equipment
Parameter, the electronic equipment also include：Scaling unit, wherein：
The power end of the power amplifier is connected with the switched power output, input and the transceiver phase
Even, output end is connected with voltage-controlled matching network；
The input of the scaling unit is connected with the processor and the switched power output respectively, output
End is connected with the voltage-controlled matching network, for the proportional arrangement parameter determined according to the processor and the Switching Power Supply
Current output voltage determine the ratio control voltage of output so that the ratio control voltage controls the voltage-controlled pair net
Network, adjust the output impedance of the power amplifier.
Preferably, the electronic equipment also includes：
Low pass filter, so that the output end of the scaling unit passes through the low pass filter and described voltage-controlled
Distribution network is connected.
Preferably, the electronic equipment also includes：
It is connected with the processor, obtains the temperature-detecting device of the current operating temperature of the electronic equipment.
Preferably, the scaling unit includes：
Amplifier；
The first resistor being connected with the amplifier positive input；
First end is connected with the amplifier inverting input, the second resistance of the second end ground connection；
One end is connected with the first end of the second resistance, the feedback ratio that the other end is connected with the output end of the amplifier
Example circuit；
Wherein, the feedback proportional circuit includes multiple feedback proportional branch roads in parallel, and each described feedback proportional
Branch road includes the 3rd resistor and first switch of series connection.
As can be seen here, compared with prior art, this application provides a kind of control method of envelop following technology, device and
Electronic equipment, after determining proportional arrangement parameter according to the work at present frequency range and operating temperature of acquired electronic equipment, according to
The current output voltage of the proportional arrangement parameter and the Switching Power Supply of the electronic equipment determines ratio control voltage, afterwards, base
In the output impedance of the power amplifier of ratio control voltage dynamic adjustment electronic equipment, it is determined that suitable voltage-controlled pair net
Network, so as to ensure power amplifier steady operation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of the control method embodiment of envelop following technology of the present invention；
Fig. 2 is the schematic flow sheet of the control method embodiment of another envelop following technology of the present invention；
Fig. 3 is a kind of structural representation of the control device embodiment of envelop following technology of the present invention；
Fig. 4 is the structural representation of a kind of electronic equipment embodiment of the present invention；
Fig. 5 is the part circuit structure schematic diagram in a kind of electronic equipment embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
This application provides a kind of control method of envelop following technology, device and electronic equipment, according to acquired electricity
After the work at present frequency range and operating temperature of sub- equipment determine proportional arrangement parameter, according to the proportional arrangement parameter and the electronics
The current output voltage of the Switching Power Supply of equipment determines ratio control voltage, afterwards, is adjusted based on ratio control voltage dynamic
The output impedance of the power amplifier of electronic equipment, it is determined that suitable voltage-controlled matching network, so as to ensure that power amplifier is stable
Work.
A kind of schematic flow sheet of the control method embodiment of envelop following technology of the invention shown in reference picture 1, the control
Method processed can be applied to electronic equipment, such as mobile phone, computer, then the control method that the present embodiment is provided specifically may include with
Lower step：
Step S110：Proportional arrangement is determined according to the work at present frequency range and current operating temperature of acquired electronic equipment
Parameter.
In electronic equipment practical application, it is mainly accomplished that two-way communication, specifically can use frequency according to being actually needed
Divide duplexing (Frequency Division Duplexing, FDD) pattern or time division duplex (Time Division
Duplexing, TDD) pattern communicated.
Wherein, FDD is transmitted and is passed up downwards respectively the technology of information, i.e., one letter using two independent channels
Road is used for transmitting information from base station to terminal user, and one other channel is used for sending information from terminal user to base station, and TDD is then
The transmitting and reception of signal are realized using the different time-gap of same frequency channel, the transmission signal and reception signal can be by certain
Ensure that the time is separated.
The characteristics of based on two kinds of different working modes of above-mentioned FDD and TDD, in the present embodiment practical application, performing step
Before rapid S110, the current operation mode of electronic equipment can be first detected, is reception signal pattern when it is in TDD downlink modes
When, and the configuration parameter of the power amplifier of its inside need not be adjusted, and when the electronic equipment be in fdd mode or
During the upper row modes of TDD, in order to improve the stability of the electronic equipment internal power amplifier operation, it is necessary to which the dynamic regulation power is put
The configuration parameter or the suitable matching network of selection of big device, thus, in actual applications, the current of electronic equipment can be obtained in real time
Working frequency range and operating temperature, to obtain corresponding proportional arrangement parameter accordingly.
Optionally, the present embodiment can adjust voltage-controlled matching network by Set scale amplifying unit, and in above-described embodiment
Described proportional arrangement parameter is used for configuring the scaling unit, to obtain required adjusting parameter.Wherein, the ratio
Example configuration parameter can be determined by test of many times, i.e., it is determined that the working frequency range (low-frequency range or high band) and work of electronic equipment
After making temperature (low temperature or different high temperature values), by repeatedly adjusting the proportional arrangement parameter of scaling unit, electronics is determined
Equipment makes the most suitable proportional arrangement parameter of power amplifier steady operation under work at present frequency range and current operating temperature,
Such repetition test can obtain electronic equipment at a temperature of different operating frequency range and different operating, improve power amplifier work
The corresponding proportional arrangement parameter of stability, afterwards, can be according to the working frequency range and operating temperature of determined electronic equipment and conjunction
The corresponding relation of suitable proportional arrangement parameter, establish proportional arrangement relation table and be prestored to processor, based on this, in reality
In, as long as determining the work at present frequency range and current operating temperature of electronic equipment, you can ratio corresponding to tabling look-up to obtain is matched somebody with somebody
Parameter is put, it is very convenient and quick.
Certainly, it is necessary to which explanation, on electronic equipment, comparative example control is single under different operating frequency and operating temperature
The determination process of the proportional arrangement parameter of member is not limited to epimere and records lookup table mode, is also based on the device of the electronic equipment
Part parameter and need of work, proportional arrangement parameter of scaling unit needs etc. is calculated using existing calculation formula
Deng, so long as not those skilled in the art pay creative work determination, belong to the scope of the present invention.
Step S120：It is current defeated based on envelope signal according to the proportional arrangement parameter and the Switching Power Supply of electronic equipment
Go out voltage and determine ratio control voltage.
In actual applications, the processor of electronic equipment, which is delivered to Switching Power Supply envelope signal, will influence the Switching Power Supply
Output voltage, i.e., the output voltage of the Switching Power Supply by with the change of the envelope signal received and direct ratio change, now, by
In the operating voltage of power amplifier provided by the Switching Power Supply, thus, must when switch power source output voltage constantly changes
The power amplifier can be so caused to work unstable.
Based on this, in order that the power amplifier in electronic equipment more stably works, corresponding proportional arrangement is being obtained
After parameter, electronic equipment can be configured according to the proportional arrangement parameter, mainly to the electronics within the preset configuration time
Scaling unit in equipment carries out proportional arrangement, afterwards, can working as according to its Switching Power Supply with the electronic equipment postponed
Preceding output voltage determines the ratio control voltage of output, so as to adjust voltage-controlled matching network, enhancing power amplification unit work
Stability
Wherein, the setup time on proportional arrangement parameter is the above-mentioned preset configuration time, it is preferred that the configuration process can
The interior completion during the transient state before each subframe starts, certainly, it is not limited to this, is as long as the ratio to electronic equipment can be realized
Example amplifying unit proportional arrangement and do not influence the normal use of the electronic equipment.
Step S130：The output impedance of the power amplifier of the electronic equipment is adjusted according to the ratio control voltage.
Understood based on above-mentioned analysis, the embodiment of the present invention by obtaining work at present frequency range and the work of electronic equipment in real time
Temperature, and after determining therefrom that corresponding proportional arrangement parameter, according to the switch of the proportional arrangement parameter and electronic equipment electricity
The current output voltage in source determines ratio control voltage, now, you can adjusts the electronics based on ratio control voltage dynamic and sets
The output impedance matching networks of standby power amplifier, so as to strengthen the stability of power amplifier work.
In order to illustrate more clearly of the detailed process of the control method of envelop following technology provided by the invention, reference picture 2
Shown schematic flow sheet, it proposes a kind of preferred embodiment of the control method of envelop following technology, it is necessary to illustrate,
Embodiment shown in Fig. 2 is a kind of preferable implementation of the control method of envelop following technology proposed by the present invention, but
Be not limited to a kind of this specific implementation, those skilled in the art can on the basis of above-mentioned embodiment illustrated in fig. 1, according to
The specific implementation for determining above-mentioned steps S110~step S120 is actually needed, wound is paid so long as not those skilled in the art
The property made work determines, belongs to the scope of the present invention, the application will not enumerate herein.The then tool of the preferred embodiment
Body step can be as follows：
Step S210：Detect the current operation mode of electronic equipment.
Wherein, the current operation mode of electronic equipment can be fdd mode and tdd mode, and the tdd mode can be divided into again
The upper row modes of TDD and TDD downlink modes, it can be seen from the description of above-described embodiment corresponding part, when electronic equipment is under TDD
During row mode, i.e., when the electronic equipment is just receiving the data of base station transmission, the power amplifier working stability of electronic equipment, not
Need to enter power amplifier Mobile state adjustment.
Step S220：When the current operation mode be fdd mode or TDD upper row mode when, obtain electronic equipment ought
Preceding working frequency range and current operating temperature.
In the present embodiment, when electronic device works on fdd mode or TDD row mode, can all influence its power amplification
The stability of device work, it is then desired to its output impedance matching networks be entered with Mobile state adjustment, i.e., according to the current of electronic equipment
Working frequency range and current operating temperature realize that dynamic adjusts, thus, in the present embodiment practical application, once it is determined that electronic equipment
Row mode is operated on fdd mode or TDD it is necessary to obtain the work at present frequency range of electronic equipment and current operating temperature immediately,
So that subsequent step uses.
Optionally, as another embodiment of the present invention, no matter the electronic equipment works under which kind of mode of operation, can
The work at present frequency range and current operating temperature of the electronic equipment are obtained in real time, when it is determined that the electronic device works are descending in TDD
During pattern, any operation need not be subsequently carried out；And when it is determined that the electronic device works are in row mode on fdd mode or TDD, then
The work at present frequency range and current operating temperature of the electronic equipment obtained according to current time, carry out subsequent operation.So
Say, the present invention is not limited obtaining the work at present frequency range of electronic equipment and the time of current operating temperature.
Step S230：The ratio of working frequency range and operating temperature and proportional arrangement parameter based on the electronic equipment to prestore is matched somebody with somebody
Put relation table, it is determined that with the current one-to-one proportional arrangement parameter of working frequency range and current operating temperature.
The present embodiment can determine electronic device works in different operating frequency range and operating temperature by repetition test, to increase
Proportional arrangement parameter needed for the stability of strong power amplifier work, and establish the working frequency range and operating temperature of electronic equipment
With the corresponding relation of proportional arrangement parameter, so, in actual applications, when need adjust power amplifier output impedance matching
During network, you can the work at present frequency range of the first electronics of acquisition and current operating temperature are substituted into above-mentioned corresponding relation, from
And one-to-one proportional arrangement parameter is found out, it is very simple and quick.
Step S240：Detection current time whether be electronic equipment subframe start before transient state during, if it is, perform
Step S260；If not, into step S250.
Step S250：Next subframe is waited to start.
In the present embodiment, during the transient state before reaching next subframe and starting, subsequent step S260 is performed.
It should be noted that for the proportional arrangement of electronic equipment, it is not limited in before each of which subframe starts
Carry out during transient state or completed in other times.
Step S260：Electronic equipment is configured according to proportional arrangement parameter.
Specifically, according to gained proportional arrangement parameter to the proportional network in scaling unit in electronic equipment and amplification
Device carries out parameter configuration, to obtain suitable ratio control voltage, to adjust voltage-controlled matching network.
Step S270：The ratio control for determining to export with the electronic equipment postponed according to the current output voltage of its Switching Power Supply
Voltage processed.
Wherein, the output voltage of the Switching Power Supply of electronic equipment is that the envelope signal received based on it is determined.
Step S280：LPF is carried out to the ratio control voltage.
Step S290：The output impedance of the power amplifier of electronic equipment is adjusted according to filtered ratio control voltage.
As can be seen here, in the embodiment of the present application, when it is determined that electronic device works are in row mode on fdd mode or TDD, base
Corresponding proportional arrangement parameter is searched in the work at present frequency range and current operating temperature obtained in real time, and according to the ratio
Configuration parameter adjusts the parameter of proportional network and amplifier in the scaling unit in the electronic equipment in time, so as to adjust it
The ratio control voltage of output, is delivered to voltage-controlled matching network after low-pass filtered, reach dynamic adjustment power amplifier output
Impedance matching network, strengthen the purpose of the power amplifier job stability.
A kind of structural representation of the control device embodiment of envelop following technology of the invention shown in reference picture 3, the control
Device processed can be applied to electronic equipment, such as mobile phone or notebook, then the control device that the present embodiment is provided specifically can be with
Including：
First determining unit 310, for the work at present frequency range according to the acquired electronic equipment and work at present
Temperature determines proportional arrangement parameter.
Optionally, in the practical application of the present embodiment, the control device of envelop following technology can also include：
First detection unit, for detecting the current operation mode of electronic equipment.
Wherein, the current operation mode of electronic equipment includes tdd mode and fdd mode, and the tdd mode and fdd mode
Row mode and downlink mode specifically can be subdivided into, it is necessary to explanation, according to communication feature, on the FDD under row mode and FDD
Row mode is to realize data transfer by different independent channels, and row mode and TDD downlink modes are then by same on TDD
Frequency channels realize data transfer.
When acquiring unit for the current operation mode is row mode on fdd mode or TDD, the electronic equipment is obtained
Work at present frequency range and current operating temperature.
In the present embodiment, if the current operation mode is TDD downlink modes, i.e., electronic equipment receives the number that base station is sent
According to when, and Mobile state adjustment need not be entered to power amplifier, can now not have to the logical work at present frequency for obtaining electronic equipment
Section and current operating temperature, the work at present frequency range and current operating temperature of the electronic equipment can also be obtained, when need not evidence
This carries out subsequent operation.
Optionally, in the present embodiment practical application, first determining unit 310 specifically can be based on the electronic equipment to prestore
Working frequency range and operating temperature and proportional arrangement parameter proportional arrangement relation table, it is determined that the work at present with the electronic equipment
Frequency range and the one-to-one proportional arrangement parameter of current operating temperature.
Second determining unit 320, for the Switching Power Supply base according to the proportional arrangement parameter and the electronic equipment
Ratio control voltage is determined in the current output voltage of envelope signal.
Wherein, in the present embodiment, second determining unit 320 can include：
Dispensing unit 321, within the preset configuration time, being entered according to the proportional arrangement parameter to the electronic equipment
Row configuration.
In actual applications, the dispensing unit 321 can specifically include：
Second detection unit, for detect current time whether be electronic equipment subframe start before transient state during.
Configure subelement, for the second detection unit testing result for be when, according to proportional arrangement parameter to electronics
Equipment is configured；
Etc. subelement to be configured, for the second detection unit testing result for it is no when, wait next subframe to start,
And during the transient state before next subframe starts, electronic equipment is configured according to the proportional arrangement parameter.
3rd determining unit 322, for current output of the Switching Power Supply according to the electronic equipment based on envelope signal
Voltage determines the ratio control voltage with the electronic equipment output postponed.
Optionally, when it is determined that electronic equipment output ratio control voltage after, in order to improve control accuracy, the control
Device can also include：Low-pass filter unit, for carrying out LPF to the ratio control voltage.
Adjustment unit 330, for the defeated of the power amplifier according to the ratio control voltage adjustment electronic equipment
Go out impedance.
In summary, work at present frequency of the embodiment of the present invention by the first determining unit according to acquired electronic equipment
Section and current operating temperature determine corresponding to proportional arrangement parameter, and by the second determining unit according to the proportional arrangement parameter and
The output voltage of Switching Power Supply determines the ratio control voltage of electronic equipment output, afterwards, by adjustment unit according to the ratio
Example control voltage adjustment power amplifier output impedance matching networks, so as to strengthen the stability of power amplifier work.
The structural representation of a kind of electronic equipment embodiment of the present invention shown in reference picture 4, the electronic equipment specifically can be with
For mobile phone, computer etc., the electronic equipment that the present embodiment is provided can specifically include：Processor 410, Switching Power Supply 420,
Transceiver 430, power amplifier 440, voltage-controlled matching network 450 and scaling unit 460, wherein：
Processor 410 is used to determine the ratio according to the work at present frequency range and current operating temperature of acquired electronic equipment
The proportional arrangement parameter of example amplifying unit 460.
Specifically, it can be seen from the description of above-described embodiment appropriate section, the work of obtained electronic equipment can will be tested
The corresponding relation of frequency range and operating temperature and proportional arrangement parameter is prestored in the processor 410 of the electronic equipment, thus,
In actual applications, after processor 410 learns the work at present frequency range and current operating temperature of the electronic equipment, you can directly
Corresponding proportional arrangement parameter is selected using the corresponding relation, afterwards, within default setup time, the proportional arrangement can be joined
Number is sent to scaling unit 460, completes the configuration to the proportional arrangement unit 460.
Switching Power Supply 420 is connected with processor 410, receives the envelope signal of the processor 410 transmission, and according to the envelope
Signal controls the output voltage of itself.Wherein, the envelope signal specifically can be by DAC (the Digital in the processor 410
Analog converter, digital analog converter) Switching Power Supply 420 is delivered to, now, due to the output end of the Switching Power Supply 420
The power end with power amplifier 440 and scaling unit 460 is connected respectively, thus, the power amplifier 440 and ratio are put
The operating voltage of big unit 460 provides by the Switching Power Supply 420.
The control terminal of transceiver 430 is connected with processor 410, and output end is connected with power amplifier 440, in the present embodiment
In practical application, processor 410 controls the transceiver 430 to send radiofrequency signal to the power amplifier 440.Wherein, in order to
Envelope signal distortion is avoided, the output voltage waveforms bandwidth for typically requiring Switching Power Supply 420 is 3~5 times of radiofrequency signal bandwidth,
This requires Switching Power Supply 420 to be added to the electric capacity that can not use higher value in the supply line of the power end of power amplifier 440
Decoupling, however, in the prior art, the decoupling capacitor of Switching Power Supply must can ensure Switching Power Supply in 100pF magnitudes
The harmonic wave of the envelope signal of 420 output voltage is not filtered out, and envelope signal is undistorted.
Applicant it has been investigated that, power amplifier 440 needs the electric capacity parallel connections of μ F+nF+pF ranks to decouple and and protect
The power amplifier 440 itself working stability is held, still, the circuit structure of existing electronic equipment only allows using 100pF amounts
The electric capacity of level, it is clear that this can not ensure the stability of power amplifier work；The antenna band for being additionally, since electronic equipment is cut
Changing commanders causes power amplifier load change and variation of ambient temperature, so that power amplifier is unstable, and then makes its performance
Deteriorate, the transmitter resulted even in transceiver 430 can not reliably working.
In order to solve the above problems, the embodiment of the present invention is the same of the power supply of power amplifier 440 in the output of Switching Power Supply 420
When connect a scaling unit 460, i.e. the output end of Switching Power Supply 420 connects the power end of power amplifier 440 simultaneously
With the power end of scaling unit 460, by the scaling unit 460 according to antenna band (i.e. above-mentioned electronic equipment
Working frequency range) and operating temperature, corresponding proportional arrangement parameter is selected, control is connected with the scaling output end of unit 460
Voltage-controlled matching network, dynamic adjust power amplifier 440 output impedance, strengthen the power amplifier 440 in operating voltage
Stability when (i.e. the output voltage of Switching Power Supply 420) quickly changes.
Optionally, in order to further improve control accuracy, the electronic equipment can also include low pass filter 470, so that
Scaling unit 460 is connected by the low pass filter 470 with voltage-controlled matching network 450, defeated to the scaling unit 460
The ratio control voltage gone out carries out LPF.
In addition, in the present embodiment practical application, in order to obtain the current operating temperature of electronic equipment, in the electronic equipment
It is interior that the temperature-detecting device 480 being connected with processor 410 can also be set.Wherein, the temperature-detecting device 480 is specifically as follows
Temperature sensor etc., but be not limited thereto.
Optionally, in the various embodiments described above of the present invention, as shown in figure 5, aforementioned proportion amplifying unit 460 can specifically wrap
Include：Amplifier OP1, the first resistor R1 being connected with amplifier OP1 positive inputs, first end and amplifier OP1 are reverse
Input is connected, and the second resistance R2 of the second end ground connection, one end is connected with the first end of the second resistance R2, the other end and institute
State the connected feedback proportional circuit 461 of amplifier OP1 output end.
Wherein, the feedback proportional circuit 461 includes multiple feedback proportional branch roads 4611 in parallel, and each is described anti-
Presenting proportional branch 4611 includes the 3rd resistor R3 and first switch K1 of series connection, as shown in figure 5, the feedback proportional circuit 461
Three feedback proportional branch roads 4611 in parallel are may particularly include, but are not limited thereto, in actual applications, can be according to actual need
It is adjusted, the present invention no longer illustrates one by one herein.
In addition, it is necessary to explanation, for the physical circuit of the scaling unit 460 in the various embodiments described above of the present invention
Structure be not limited to Fig. 5 to circuit structure, those skilled in the art can according to be actually needed selection it is existing other ratio
Example amplifying circuit, the present invention will not enumerate herein.
As another embodiment of the present invention, the electronic equipment in the various embodiments described above can also include suggestion device, use
In when it is determined that the output voltage of Switching Power Supply changes greatly, prompt message is exported, to inform the work(of user's now electronic equipment
Rate amplifier job insecurity.
Wherein, the suggestion device is specifically as follows buzzer, indicator lamp or voice module etc., and the present invention does not make to have to this
Body limit, so long as not those skilled in the art pay creative work determination belong to the scope of the present invention.
In summary, in the practical application for the electronic equipment that the present embodiment is provided, this is obtained by processor in real time
The work at present frequency range and current operating temperature of electronic book equipment, and finding and the current working frequency range and work at present temperature
After proportional arrangement parameter corresponding to degree, the proportional arrangement parameter is sent to scaling unit, completed to the scaling list
The configuration of member, voltage-controlled matching network is controlled by the ratio control voltage exported with the scaling unit postponed, adjustment power is put
Big device output impedance, so as to strengthen the power amplifier, in the output voltage of Switching Power Supply, quickly its i.e. operating voltage of change is quick
Stability during change.
It should be noted that in the various embodiments described above, such as first, second or the like relational terms are used merely to
One operation or unit are made a distinction with another operation or unit, and not necessarily require or imply these units or operation
Between any this actual relation or order be present.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For electronic equipment, due to its with embodiment disclosed in method it is corresponding, so description is fairly simple, related part is referring to side
Method part illustrates.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (14)
- A kind of 1. control method of envelop following technology, applied to electronic equipment, it is characterised in that methods described includes：Proportional arrangement parameter is determined according to the work at present frequency range of the acquired electronic equipment and current operating temperature；Within the preset configuration time, ratio is carried out to the scaling unit of the electronic equipment according to the proportional arrangement parameter Configuration；According to current output voltage of the Switching Power Supply of the electronic equipment based on envelope signal, it is determined that scaling with what is postponed The ratio control voltage of unit output；The output impedance of the power amplifier of the electronic equipment is adjusted according to the ratio control voltage.
- 2. according to the method for claim 1, it is characterised in that after the determination ratio control voltage, the adjustment Before the output impedance of the power amplifier of the electronic equipment, methods described also includes：LPF is carried out to the ratio control voltage.
- 3. according to the method for claim 1, it is characterised in that methods described also includes：Detect the current operation mode of the electronic equipment；When the current operation mode is row mode on fdd mode or TDD, the work at present frequency range of the electronic equipment is obtained And current operating temperature.
- 4. according to the method for claim 1, it is characterised in that the current work of the electronic equipment acquired in the basis Make frequency range and operating temperature determines that proportional arrangement parameter is specially：Working frequency range and operating temperature and the proportional arrangement relation table electronics of proportional arrangement parameter based on the electronic equipment to prestore Equipment, it is determined that with the work at present frequency range and the one-to-one proportional arrangement parameter of the current operating temperature.
- 5. according to the method for claim 1, it is characterised in that it is described within the preset configuration time, matched somebody with somebody according to the ratio Putting parameter and carrying out configuration to the electronic equipment includes：Detection current time whether be the electronic equipment subframe start before transient state during；If so, the electronic equipment is configured according to the proportional arrangement parameter；If it is not, waiting next subframe to start, and during the transient state before next subframe starts, matched somebody with somebody according to the ratio Parameter is put to configure the electronic equipment.
- A kind of 6. control device of envelop following technology, applied to electronic equipment, it is characterised in that described device includes：First determining unit, determined for the work at present frequency range according to the acquired electronic equipment and current operating temperature Proportional arrangement parameter；Second determining unit, believed for the Switching Power Supply according to the proportional arrangement parameter and the electronic equipment based on envelope Number current output voltage determine ratio control voltage；Adjustment unit, the output impedance of the power amplifier for adjusting the electronic equipment according to the ratio control voltage；Wherein, second determining unit includes：Dispensing unit, within the preset configuration time, being put according to the proportional arrangement parameter to the ratio of the electronic equipment Big unit carries out proportional arrangement；3rd determining unit, determined for current output voltage of the Switching Power Supply according to the electronic equipment based on envelope signal Ratio control voltage with the scaling unit output postponed.
- 7. device according to claim 6, it is characterised in that described device also includes：Low-pass filter unit, for carrying out LPF to the ratio control voltage.
- 8. device according to claim 6, it is characterised in that described device also includes：First detection unit, for detecting the current operation mode of the electronic equipment；Acquiring unit, for when the current operation mode is row mode on fdd mode or TDD, obtaining the electronic equipment Work at present frequency range and current operating temperature.
- 9. device according to claim 6, it is characterised in that first determining unit is specifically used for based on the electricity to prestore The working frequency range and operating temperature of sub- equipment and the proportional arrangement relation table of proportional arrangement parameter, it is determined that with the work at present frequently Section and the one-to-one proportional arrangement parameter of the current operating temperature.
- 10. device according to claim 6, it is characterised in that the dispensing unit includes：Second detection unit, for detect current time whether be the electronic equipment subframe start before transient state during；Configure subelement, for second detection unit testing result for be when, according to the proportional arrangement parameter pair The electronic equipment is configured；Etc. subelement to be configured, for second detection unit testing result for it is no when, wait next subframe to start, And during the transient state before next subframe starts, the electronic equipment is matched somebody with somebody according to the proportional arrangement parameter Put.
- 11. a kind of electronic equipment, including processor, Switching Power Supply, transceiver, power amplifier and voltage-controlled matching network, its It is characterised by, the processor is true for the work at present frequency range and current operating temperature according to the acquired electronic equipment Certainty ratio configuration parameter, the electronic equipment also include：Scaling unit, wherein：The power end of the power amplifier is connected with the switched power output, and input is connected with the transceiver, Output end is connected with voltage-controlled matching network；The input of the scaling unit is connected with the processor and the switched power output respectively, output end with The voltage-controlled matching network is connected, within the preset configuration time, being entered according to the proportional arrangement parameter that the processor determines Row proportional arrangement, and the ratio for determining to export with the scaling unit postponed according to the current output voltage of the Switching Power Supply Control voltage, so that the ratio control voltage controls the voltage-controlled matching network, adjust the output resistance of the power amplifier It is anti-.
- 12. electronic equipment according to claim 11, it is characterised in that the electronic equipment also includes：Low pass filter, so that the output end of the scaling unit passes through the low pass filter and the voltage-controlled pair net Network is connected.
- 13. electronic equipment according to claim 11, it is characterised in that the electronic equipment also includes：It is connected with the processor, obtains the temperature-detecting device of the current operating temperature of the electronic equipment.
- 14. according to the electronic equipment described in claim any one of 11-13, it is characterised in that the scaling unit includes：Amplifier；The first resistor being connected with the amplifier positive input；First end is connected with the amplifier inverting input, the second resistance of the second end ground connection；One end is connected with the first end of the second resistance, the feedback proportional electricity that the other end is connected with the output end of the amplifier Road；Wherein, the feedback proportional circuit includes multiple feedback proportional branch roads in parallel, and each described feedback proportional branch road Include the 3rd resistor and first switch of series connection.
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