CN109768774A - A kind of power supply for envelope-tracking - Google Patents
A kind of power supply for envelope-tracking Download PDFInfo
- Publication number
- CN109768774A CN109768774A CN201711102873.3A CN201711102873A CN109768774A CN 109768774 A CN109768774 A CN 109768774A CN 201711102873 A CN201711102873 A CN 201711102873A CN 109768774 A CN109768774 A CN 109768774A
- Authority
- CN
- China
- Prior art keywords
- signal
- envelope
- power supply
- unit
- amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Amplifiers (AREA)
Abstract
The disclosure discloses a kind of power supply for envelope-tracking, comprising: linear amplification unit, for carrying out Linear Amplifer to the first envelope signal and exporting the envelope signal of Linear Amplifer；First control unit is filtered for the signal to a certain frequency range in first envelope signal and exports first control signal；First driving unit, for providing the first electric signal based on the first control signal；Superpositing unit, for being superimposed the envelope signal and the first electric signal of the Linear Amplifer, in order to provide the service voltage of radio-frequency power amplifier.The disclosure realizes a kind of new, for envelope-tracking power supply, can provide service voltage to radio-frequency power amplifier come more efficient by way of being at least superimposed the first electric signal to the second electric signal.
Description
Technical field
This disclosure relates to mobile communication field, in particular to a kind of power supply for envelope-tracking.
Background technique
In mobile communication field, in order to improve the efficiency of radio-frequency power amplifier, it can be used and have envelope-tracking ability
Power supply.
Envelope-tracking can be with the output power that radio-frequency power amplifier is emitted and dynamic changes radio-frequency power amplification
The service voltage of device.Envelope-tracking can also dynamically adjust the service voltage of power amplifier, it is made to track radio-frequency input signals
The amplitude of envelope.
When signal envelope becomes larger, service voltage is just promoted；When signal envelope becomes smaller, then service voltage is reduced.So this
As, radio-frequency power amplifier can be in the overwhelming majority of operational range, close to its best efficiency point, to improve mobile communications device
To the utilization rate of the energy.
The efficiency of the power supply for envelope-tracking how is further increased, is that this field technology in need of consideration is asked always
Topic.
Summary of the invention
In order to solve the above technical problems, the present disclosure proposes a kind of power supplys for envelope-tracking, comprising:
Linear amplification unit, for carrying out Linear Amplifer to the first envelope signal and exporting the envelope signal of Linear Amplifer；
First control unit, be filtered for the signal to a certain frequency range in first envelope signal or
Frequency-conversion processing simultaneously exports first control signal；
First driving unit, for providing the first electric signal based on the first control signal；
Superpositing unit, for being superimposed the envelope signal and the first electric signal of the Linear Amplifer, in order to provide radio-frequency power
The service voltage of amplifier.
Preferably, the first control unit includes following any: low-pass filter, bandpass filter, high-pass filter,
Converter unit.
Preferably, first envelope signal is the envelope signal for being input to the radio-frequency power amplifier.
Preferably, the power supply further include:
Second control unit, for responding the signal of first envelope signal and the first electric signal after feedback unit
The first difference signal generate second control signal；
Second driving unit, for providing the second electric signal, and second electric signal based on the second control signal
With the first electric signal, the Linear Amplifer envelope signal together be added to the superpositing unit, in order to provide radio-frequency power
The service voltage of amplifier.
Preferably,
First driving unit includes first switch amplifier and the first inductance；
Second driving unit includes second switch amplifier and the second inductance.
Preferably,
Second control unit is selected from following any: pulse-width modulator, pulse density modulator.
Preferably,
The first switch amplifier, second switch amplifier are selected from following any: GaN switching amplifier, Si-based
Switching amplifier.
Preferably,
Third control unit is used in response to first difference signal and second electric signal after feedback unit
Signal the second difference signal generate third control signal；
Third driving unit, for providing third electric signal, and the third electric signal based on third control signal
The superpositing unit is added to together with the envelope signal of the second electric signal, the first electric signal and the Linear Amplifer, with
The service voltage of radio-frequency power amplifier is just provided.
Preferably,
4th control unit is used in response to second difference signal and the third electric signal after feedback unit
Signal third difference signal generate the 4th control signal；
4th driving unit, for providing the 4th electric signal, and the 4th electric signal based on the 4th control signal
It is added to together with the envelope signal of third electric signal, the second electric signal, the first electric signal and the Linear Amplifer described
Superpositing unit, in order to provide the service voltage of radio-frequency power amplifier.
Preferably,
Third driving unit includes third switching amplifier and third inductance；
4th driving unit includes the 4th switching amplifier and the 4th inductance；
Third switching amplifier, the 4th switching amplifier are selected from following any: GaN switching amplifier, Si-based switch
Amplifier；
Third control unit, the 4th control unit are selected from following any: pulse-width modulator, pulse density modulator.
Through the above technical solutions, the disclosure realizes a kind of new, for envelope-tracking power supply, it can be by least
The mode for being superimposed the first electric signal to the second electric signal is next more efficient to radio-frequency power amplifier offer service voltage.
Detailed description of the invention
Fig. 1 is power supply architecture schematic diagram shown in one embodiment in the disclosure；
Fig. 2 is power supply architecture schematic diagram shown in one embodiment in the disclosure；
Fig. 3 is the schematic diagram in the time domain of envelope shown in one embodiment in the disclosure；
Fig. 4 is the schematic diagram in a frequency domain of envelope shown in one embodiment in the disclosure；
Fig. 5 is power supply architecture schematic diagram shown in one embodiment in the disclosure；
Fig. 6 is power supply architecture schematic diagram shown in one embodiment in the disclosure；
Fig. 7 is bandwidth distribution schematic diagram shown in one embodiment in the disclosure；
Fig. 8 is power supply architecture schematic diagram shown in one embodiment in the disclosure；
Fig. 9 is bandwidth distribution schematic diagram shown in one embodiment in the disclosure；
Figure 10 is power supply architecture schematic diagram shown in one embodiment in the disclosure.
Specific embodiment
In the following description, multiple details are elaborated, to provide the more fully explanation to embodiment of the disclosure.So
And it will be understood by those skilled in the art that it is evident that, may be practiced without these specific details this hair
Bright embodiment.In other embodiments, in form of a block diagram rather than well known structure and equipment is illustrated in detail, to avoid
Keep embodiment of the disclosure fuzzy.Furthermore, it is possible to by the feature and combination with one another of different embodiments described below, unless with it
He specifically states mode.
Referring to Fig. 1, the present disclosure proposes a kind of power supplys for envelope-tracking, comprising:
Linear amplification unit, for carrying out Linear Amplifer to the first envelope signal and exporting the envelope signal of Linear Amplifer；
First control unit, be filtered for the signal to a certain frequency range in first envelope signal or
Frequency-conversion processing simultaneously exports first control signal；
First driving unit, for providing the first electric signal based on the first control signal；
Superpositing unit, for being superimposed the envelope signal and the first electric signal of the Linear Amplifer, in order to provide radio-frequency power
The service voltage of amplifier.
For the embodiment, radio-frequency power is provided by the envelope signal and the first electric signal that are superimposed the Linear Amplifer
The service voltage of amplifier, this in the prior art by after simple two-way electric current in parallel to radio-frequency power amplifier offer confession
It is completely different to voltage, it is important that not with being: the first control unit and the first driving unit.
Preferably, the first control unit can be one of following: low-pass filter, bandpass filter, high-pass filtering
Device, converter unit；It is furthermore preferred that the first control unit is Digital Control unit.
By taking filtering as an example, no matter first control unit is filtered the signal of any frequency range in the first envelope signal
When processing or frequency-conversion processing, first control unit all has fixed cut-off frequency, and output frequency bandwidth is also fixed.In this way, through
It also would not frequency, bandwidth with the first envelope signal by the bandwidth of obtained first electric signal of the circuit of the first driving unit
Change and change, so as to keep power-efficient within the scope of certain frequency, prevents the bandwidth with the first envelope signal violent
Change and efficiency decline.
As for the matching problem of time constant or delay between each circuit, this belongs to the common sense of circuit field.This public affairs
Open and do not lie in how to design, adjustment time constant, details are not described herein.
In another embodiment, first envelope signal is the envelope letter for being input to the radio-frequency power amplifier
Number.
For the embodiment, when the first envelope signal is to be input to the envelope signal of the radio-frequency power amplifier,
As in most of technical solutions in the prior art using radio frequency (i.e. RF) input signal as the reference signal of envelope-tracking,
The embodiment is also to be input to the envelope signal of radio-frequency power amplifier, Lai Shixian envelope-tracking from signal source.
It is understood that the first electric signal in above-described embodiment can be the first current signal, it is also possible to first voltage
Signal.If it is the first current signal, then the envelope signal for needing only assure that Linear Amplifer is current signal, can meet folded
Add superposition of the unit to uniformity signal；Equally, if it is first voltage signal, then needing only assure that the envelope letter of Linear Amplifer
Number be voltage signal, superposition of the superpositing unit to uniformity signal can be met.Various electric signals hereinafter, it is similar, after
Text no longer repeats this.
It should be noted that if the power supply of above-described embodiment is analog power: (1) when the first electric signal is the
When one current signal, the envelope signal of the first electric signal and Linear Amplifer respectively corresponding circuit can by parallel way come
Realize superpositing unit；(2) when the first electric signal is first voltage signal, the envelope signal of the first electric signal and Linear Amplifer is each
Superpositing unit can be realized by series system from corresponding circuit；In addition, if the power supply of above-described embodiment is number
Power supply, as long as then the first electric signal can be represented with the superposition of any digital circuit, the digital of envelope signal of Linear Amplifer is believed
Number, then superpositing unit may be implemented in these digital circuits.To each embodiment below, if power supply is analog power
It is similar with this paragraph or when digital power.
In another embodiment, referring to fig. 2, the power supply further include:
Second control unit, for responding the signal of first envelope signal and the first electric signal after feedback unit
The first difference signal generate second control signal；
Second driving unit, for providing the second electric signal, and second electric signal based on the second control signal
With the first electric signal, the Linear Amplifer envelope signal together be added to the superpositing unit, in order to provide radio-frequency power
The service voltage of amplifier.
For the embodiment, obtained by the first envelope signal and signal of first electric signal after feedback unit as difference
The first difference signal is obtained, is equivalent to and obtains signal corresponding to the frequency range that those are disposed by first control unit.Into one
Step, the embodiment generates second control signal with the first difference signal, and obtains the eventually by the second driving unit
Two electric signals, and be added in the superpositing unit.In this way, the signal of superpositing unit final output is more complete, more
The complete frequency range that the envelope signal that levels off to is covered, and improve the efficiency of power supply.
Shown in Figure 3, the broken folding interval chain-dotted line 10 of red indicates voltage corresponding to the second electric signal, blue broken line
20 indicate that voltage corresponding to the first electric signal, green chain-dotted line 30 indicate voltage corresponding to the envelope signal of Linear Amplifer,
Carmetta solid line 40 then indicates the whole converted after the envelope signal superposition of the second electric signal, the first electric signal, Linear Amplifer
Envelope voltage.
With further reference to Fig. 4, Fig. 4 is then the expression of time-domain signal in a frequency domain in Fig. 3.
The characteristics of above-described embodiment, also resides in, and the first electric signal, the second electric signal, third electric signal are wrapped with described first
Network signal is related, and therefore, above-described embodiment can realize a kind of power supply for envelope-tracking.It is understood that in the first packet
Under the premise of network signal is existing, on the basis of first control signal, second control signal, above-mentioned first telecommunications is just produced
Number, the second electric signal.
In another embodiment,
First driving unit includes first switch amplifier and the first inductance；
Second driving unit includes second switch amplifier and the second inductance.
It is understood that the higher occasion of switching amplifier appropriate frequency.Electric current in respective branch, passes through corresponding first
Inductance, the storage of the second inductance, release.
In another embodiment,
Second control unit is selected from following any: pulse-width modulator, pulse density modulator.The present embodiment meaning
Restriction is made in the type selecting to control unit.
In another embodiment,
The first switch amplifier, second switch amplifier are selected from following any: GaN switching amplifier, Si-based
Switching amplifier.Obviously, which is the signal for upper frequency, this is because the switching frequency of GaN switching amplifier
It can achieve very high level.Similar, it can also be using switching frequency also very high Si-based switching amplifier (i.e. silicon substrate
Switching amplifier, also referred to as silicon base switching amplifier).It is understood that if you do not need to the signal of upper frequency is directed to, then related
Switching amplifier can have more selections.For each embodiment of the disclosure, the selection of switching amplifier depends on it
The frequency range of the signal of processing.
In another embodiment, the power supply further include:
Third control unit, for responding first difference signal and second electric signal after feedback unit
Second difference signal of signal generates third and controls signal；
Third driving unit, for providing third electric signal, and the third electric signal based on third control signal
The superpositing unit is added to together with the envelope signal of the second electric signal, the first electric signal and the Linear Amplifer, with
The service voltage of radio-frequency power amplifier is just provided.
For the embodiment, obtained by the first difference signal and signal of second electric signal after feedback unit as difference
Obtain the second difference signal, the letter of the superpositing unit final output of the present embodiment similar with the embodiment of the first difference signal above
It is number more complete, the complete frequency range that the envelope signal that more levels off to is covered, and still maintain the efficiency of power supply.
It is understood that the power supply can further include:
4th control unit is used in response to second difference signal and the third electric signal after feedback unit
Signal third difference signal generate the 4th control signal；
4th driving unit, for providing the 4th electric signal, and the 4th electric signal based on the 4th control signal
It is added to together with the envelope signal of third electric signal, the second electric signal, the first electric signal and the Linear Amplifer described
Superpositing unit, in order to provide the service voltage of radio-frequency power amplifier.
Obviously, previous embodiment is compared, the signal of the superpositing unit final output of the embodiment is more complete, more
The complete frequency range that the envelope signal that levels off to is covered, and still maintain the efficiency of power supply.
Referring to Fig. 5, by taking first control unit 10 includes low-pass filter as an example:
Linear amplifier LR, switching amplifier SR1, inductor L1 and first control unit 10, input signal Vin pass through line
Property amplifier LR after obtain envelope signal A, the input terminal of first control unit 10 couples defeated from the input terminal of linear amplifier LR
Enter the envelope signal R of signal Vin, the first control unit 10 has fixed cut-off frequency, and output frequency bandwidth is fixed, and wraps
Network signal R by first control unit 10, switching amplifier SR1, inductor L1 series circuit after, obtain low frequency envelope signal
B, the bandwidth of low frequency envelope signal B do not change with the frequency bandwidth of input signal Vin and are changed, such low-pass filter
10, it is able to maintain power-efficient, prevents the efficiency when bandwidth increases from declining.In view of low-pass filtering, first driving unit can
To use switching amplifier or linear amplifier.
Further, in another embodiment, referring to Fig. 6:
The envelope signal R of coupling input signal Vin, first control unit 10 use low-pass filter, have fixed cut
The only low-pass filtering function of frequency, the second control unit 20 is the band-pass filtering function with fixed cut-off frequency, due to second
The input of control unit 20 is derived from the difference of envelope signal R and signal of the low frequency envelope signal B through feedback unit, therefore passes through second
The bandwidth of the signal of control unit is located at the outside of 10 cutoff frequency of first control unit, bandwidth distribution as shown in fig. 7, its
In, the bandwidth between B1-B2 is controlled by first control unit 10, and the bandwidth between B1-B3 and B2-B4 is by the second control unit 20
It determines, the bandwidth of input signal Vin is opened up in the series circuit realization of the second control unit 20, switching amplifier SR2, inductor L2
Exhibition carries out detection to the signal except low-frequency filter cutoff frequency, obtains detecting circuit envelope signal D.Envelope signal A, packet
The signal envelope that network signal B is superimposed after synthesis with envelope signal D more approaches envelope signal R, improves efficiency.
Further, in another embodiment, the power supply shown in Fig. 8 for envelope-tracking, basis shown in Fig. 6
On, it also additionally include third control unit 30, switching amplifier SR3, inductor L3.Third control unit 30, switching amplifier
SR3, inductor L3 are sequentially connected in series, wherein envelope signal R is through first control unit 10, switching amplifier SR1, inductor
After the series circuit of L1, low frequency envelope signal B is obtained, the string through the second control unit 20, switching amplifier SR2, inductor L2
After joining circuit, obtain envelope signal D, the input end signal of third control unit 30 by 20 input terminal of the second control unit signal
With signal subtraction of the envelope signal D after feedback unit, obtain being amplified in envelope signal R by the second control unit 20, switch
Signal H that device SR2, inductor L2 series circuit filter, by third control unit 30, switching amplifier SR3, inductor L3
After series circuit, envelope signal E is obtained, bandwidth is located at except the bandwidth of envelope signal D, as shown in figure 9, third control unit
30 be the filter circuit with fixed-bandwidth, can by frequency be higher than the frequency of the second control unit 20, B3-B5 and B4-
Bandwidth between B6 is determined by third control unit 30.Envelope signal A, envelope signal B, envelope signal D, envelope signal E it is folded
Adduction is at more approach envelope signal R.
Further, as shown in Figure 10, in the design basis of Fig. 8, the 4th control unit 40, switching amplifier are increased
The series circuit of SR4, inductor L4, wherein the input signal of the 4th control unit 40 is by envelope signal H and envelope signal E
The envelope signal K that signal subtraction after feedback unit obtains, by third control unit 30, switching amplifier SR3, inductance
After the series circuit of device L3, envelope signal F is obtained, the frequency of envelope signal F is higher than the frequency of envelope signal E, and the 4th control is single
Member 40 is the filter circuit with fixed-bandwidth, can by frequency be higher than the frequency of third control unit 30.Envelope signal
A, the superposition synthesis of envelope signal B, envelope signal D, envelope signal E, envelope signal F further approach envelope signal R.
The bandwidth broadning of plural parallel stage, and the bandwidth of every level-one is fixed, such method can be while guaranteed efficiency
Bandwidth is expanded, and makes every grade of modularization, simplifies circuit design；The envelope signal tracking of plural parallel stage simultaneously, is applied to power
Envelope signal on amplifier is more complete, more efficient.
Further, the plural parallel stage bandwidth broadning can be unlimited.
Further, each control unit 10-40 has respectively different frequency threshold or threshold interval, i-th driving
The frequency threshold or threshold interval of unit frequency threshold corresponding to the frequency threshold of the i-th control unit or threshold interval and different
Value or threshold interval are successively arranged on frequency band.
Control unit, switching amplifier and low-frequency filter in parallel circuits at different levels can be integrated in a circuit,
It is realized by digital circuit or analog circuit.
In conclusion the disclosure presence most outstanding having the technical effect that due to superpositing unit, and can be based on letter
Number difference is constantly expanded, and it is mobile logical that this means that the present embodiment can be used for the 5th following third-generation mobile communication technology, the 6th generation
The technology that letter technology even updates, and it is not only restricted to the 4th third-generation mobile communication technology using LTE as representative or using WCDMA as generation
The third generation mobile communications technology of table.
Another of the disclosure have technical effect that, the envelope signal of Linear Amplifer, the first electric signal or even the second telecommunications
Number, third electric signal etc., both originate from same envelope signal, exactly herein under the premise of, above-mentioned each embodiment can be realized
A kind of power supply for envelope-tracking and maintain certain efficiency level.
In summary two technical effects, that is to say, that the disclosure can accomplish to take into account in terms of different frequency, certain
Efficiency on realize the expansion of bandwidth, can not only be backward compatible well, and can face the future, meet the movement in future
Demand of the communication technology in terms of radio-frequency power amplifier power supply.
In conjunction with above, it is not difficult to find that embodiment of the disclosure gives full play to the effect of superpositing unit if necessary, switch is put
The combination of big device and linear amplifier is preferably to select, but this does not imply that each driving unit can only select certain amplification
Device.Reason is: switching amplifier or linear amplifier are either used, it, always can be according to the principle of the disclosure
The expansion of bandwidth is realized on the basis of certain efficiency.
In addition to frequency, delay above, for envelope-tracking, when using above-mentioned switching amplifier or linear amplifier,
It may also relate to the amplitude adjustment of envelope signal.It carries out different amplitudes using various amplifiers to adjust, the prior art is public
Many this respect contents are opened, the disclosure is not intended to propose new amplitude adjustment means, and details are not described herein.
In addition, although it includes following any for disclosing first control unit above: low-pass filter, bandpass filter, high pass
Filter.With reference to the envelope signal in Fig. 3, since envelope signal has corresponded to the radiofrequency signal of multi-frequency, then for difference
Frequency, can targetedly select low-pass filter, bandpass filter, high-pass filter or even a combination thereof:
For example, if the envelope signal for corresponding to first frequency interval range can pass through using low-pass filter
Low-pass filter, and for obtaining a low-pass filter signal, and in turn by certain driving unit for providing certain electric current.If adopted
With bandpass filter, then the envelope signal for corresponding to second frequency interval range can be by bandpass filter, and it is used for
To a band filter signal, and in turn by certain driving unit for providing certain electric current.If right using high-pass filter
Should in third frequency separation range envelope signal can by high-pass filter, and for obtaining a High frequency filter signal, and
And then by certain driving unit for providing certain electric current.Wherein, it for low-pass filter, bandpass filter, high-pass filter, cares for
Name Si Yi, for the threshold value of frequency or the numerical value angle of threshold range, first frequency interval range is often below second frequency
Interval range, second frequency interval range are then lower than third frequency separation range.
For the disclosure, the combination using low-pass filter, bandpass filter and high-pass filter is meaningful
, such as: when can not play the function of first control unit well using single filter, frequency can not be suitable for well
When the envelope signal of wider range, and then the function described in the disclosure for the power supply of envelope-tracking can not be played well
When, then the filter unit can be it is combined: further include band logical while for example the filter unit includes low-pass filter
Filter and/or high-pass filter, thus more accurate carry out envelope-tracking.The own characteristic of specific view envelope signal and institute
Depending on the application for stating power supply deviation.It is readily appreciated that, under such combined situation, respective drive unit, which has been preferably also, to be corresponded to respectively
The driving circuit of kind filter, such as various corresponding switching amplifiers.
Further, in the same way, each control unit such as first control unit, second control unit not only may include
Filter is also possible to include converter unit, for by frequency-conversion processing rather than simply filtering processing it is similar to realize
Scheme.
More preferably, referring to Figure 10, as previously mentioned, on the basis of the disclosure revealed principle, based on above-mentioned more
A driving unit, the structure of control unit and its situation that further multi-tier is constantly carried out using signal difference, in which:
First driving unit may include the high speed such as GaN or ultrahigh speed switching amplifier, the second driving unit may include high-speed switch
Amplifier, third driving unit may include middling speed switching amplifier, and the 4th driving unit may include switching amplifier at a slow speed.
Correspondingly, each difference switching amplifier, is controlled by the control signal that different control units is issued.It should be noted that
Ultrahigh speed herein, quick, middling speed, at a slow speed mutual composition relative concept, are meant that clearly.In addition, high frequency described previously, low
Frequency is same to constitute mutually relative concept.These relative concepts are consistent with the conventional cognitive of mobile communication technology field, are clear
The concept of Chu.In this way, the disclosure can be realized it is relatively uniform, expanded step by step in stepped bandwidth.
So far, it is to be understood that: in the case where not considering power consumption or cost performance, Fig. 8 or 10 and embodiment belong to this public affairs
Middle preferred embodiment is opened, by taking Figure 10 as an example, comprehensively covers the broad range of senior middle school's low frequency, and each range is different
Or it is nonoverlapping.The characteristics of the two preferred embodiments be that its fining, adequately cover related bandwidth, and repeatedly
Utilization signal difference realize bandwidth broadning so that the output height of superpositing unit levels off to first envelope signal.Wherein, with figure
6 compare, and Fig. 8, Figure 10 do not show that feedback unit, but illustrate feedback control.
In conclusion the disclosure can be used for the 5th following third-generation mobile communication technology, the 6th third-generation mobile communication technology even
The technology of update, and it is not only restricted to the 4th third-generation mobile communication technology using LTE as representative or the 3rd generation shifting by representative of WCDMA
The dynamic communication technology.
In addition, in some embodiments, control unit may be provided in the chip or processor (example of digital transmitter
Such as, silicon) on.In addition, driving unit also may be provided on the chip or processor of digital transmitter.More in the same way,
Remaining element also may be provided on related chip or processor.Above-mentioned power supply also may be provided in digital transmitter naturally
Chip or processor on.
According to specific implementation demand, the embodiment of the present invention can be realized in hardware or with software mode.The realization
Can be used be stored thereon with electronically readable control signal digital storage media (for example, floppy disk, DVD, blue light, CD, ROM,
PROM, EPROM, EEPROM or FLASH memory) it is executed.Therefore, which can be computer-readable
's.
In some embodiments, programmable logic device (for example, field programmable gate array) can be used to execute sheet
Some or all of the function of method of text description.In some embodiments, field programmable gate array can be with micro process
Device cooperation, to realize power supply described herein.
Above-described embodiment is only illustrative the principle of the disclosure.It should be appreciated that arrangement described herein and details
Modifications and variations will will be apparent to persons skilled in the art.Therefore, it is intended that only by next Patent right requirement
Scope limitation, without being limited by the detail proposed and description and explanation to embodiment herein.
Claims (10)
1. a kind of power supply for envelope-tracking, comprising:
Linear amplification unit, for carrying out Linear Amplifer to the first envelope signal and exporting the envelope signal of Linear Amplifer；
First control unit, is filtered or frequency-conversion processing for the signal to a certain frequency range in the first envelope signal
And export first control signal；
First driving unit, for providing the first electric signal based on the first control signal；
Superpositing unit, for being superimposed the envelope signal and the first electric signal of the Linear Amplifer, in order to provide radio-frequency power amplification
The service voltage of device.
2. power supply as described in claim 1, wherein preferred, the first control unit includes following any: low-pass filtering
Device, bandpass filter, high-pass filter, converter unit.
3. power supply as described in claim 1, wherein first envelope signal is to be input to the radio-frequency power amplifier
Envelope signal.
4. power supply as described in claim 1, the power supply further include:
Second control unit, for responding the of the signal of first envelope signal and the first electric signal after feedback unit
One difference signal generates second control signal；
Second driving unit, for providing the second electric signal, and second electric signal and the based on the second control signal
One electric signal, the Linear Amplifer envelope signal be added to the superpositing unit together, in order to provide radio-frequency power amplification
The service voltage of device.
5. power supply as described in claim 1 or 4, wherein
First driving unit includes first switch amplifier and the first inductance；
Second driving unit includes second switch amplifier and the second inductance.
6. power supply as claimed in claim 4, wherein
Second control unit is selected from following any: pulse-width modulator, pulse density modulator.
7. power supply as claimed in claim 5, wherein
The first switch amplifier, second switch amplifier are selected from following any: GaN switching amplifier, Si-based switch
Amplifier.
8. power supply as claimed in claim 4 further includes N number of control unit and N number of driving unit, wherein
I-th control unit, for responding the i-th -2 difference signal and signal of (i-1)-th electric signal after feedback unit
(i-1)-th difference signal generates the i-th control signal；
I-th driving unit, for providing the i-th electric signal, and i-th electric signal and remaining i-1 based on the i-th control signal
The envelope signal of a electric signal and the Linear Amplifer is added to the superpositing unit together, in order to provide radio-frequency power
The service voltage of amplifier；
Wherein, i is less than or equal to N, and i, N are the positive integer greater than 2.
9. power supply as claimed in claim 8, in which:
I-th driving unit includes the i-th switching amplifier and the i-th inductance；
I-th switching amplifier is selected from following any: GaN switching amplifier, Si-based switching amplifier.
10. power supply as claimed in claim 8, in which: the i-th control unit is selected from following any: pulse-width modulator, pulse
Density Modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102873.3A CN109768774B (en) | 2017-11-09 | 2017-11-09 | Power supply for envelope tracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102873.3A CN109768774B (en) | 2017-11-09 | 2017-11-09 | Power supply for envelope tracking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109768774A true CN109768774A (en) | 2019-05-17 |
| CN109768774B CN109768774B (en) | 2022-09-16 |
Family
ID=66449151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711102873.3A Active CN109768774B (en) | 2017-11-09 | 2017-11-09 | Power supply for envelope tracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109768774B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138343A (en) * | 2019-05-27 | 2019-08-16 | 陕西亚成微电子股份有限公司 | A kind of power supply for radio-frequency power amplifier based on feedback |
| CN110365296A (en) * | 2019-05-27 | 2019-10-22 | 陕西亚成微电子股份有限公司 | A kind of power supply for radio-frequency power amplifier |
| WO2021259034A1 (en) * | 2020-06-24 | 2021-12-30 | 中兴通讯股份有限公司 | Envelope amplifier, envelope tracking power amplifier, and signal processing method |
| CN115441883A (en) * | 2021-06-04 | 2022-12-06 | 华为技术有限公司 | Power supply circuit, processing circuit and wireless communication system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101073200A (en) * | 2005-01-25 | 2007-11-14 | 中兴通讯股份有限公司 | Predistortion method and device based on vector envelope injection |
| CN103929135A (en) * | 2014-03-24 | 2014-07-16 | 小米科技有限责任公司 | Envelope tracking drain modulator, radio frequency amplifier circuit and envelope tracking method |
| KR101691077B1 (en) * | 2015-10-07 | 2016-12-29 | 포항공과대학교 산학협력단 | Envelope tracking power amplifier using power source voltage of multi-level |
-
2017
- 2017-11-09 CN CN201711102873.3A patent/CN109768774B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101073200A (en) * | 2005-01-25 | 2007-11-14 | 中兴通讯股份有限公司 | Predistortion method and device based on vector envelope injection |
| CN103929135A (en) * | 2014-03-24 | 2014-07-16 | 小米科技有限责任公司 | Envelope tracking drain modulator, radio frequency amplifier circuit and envelope tracking method |
| KR101691077B1 (en) * | 2015-10-07 | 2016-12-29 | 포항공과대학교 산학협력단 | Envelope tracking power amplifier using power source voltage of multi-level |
Non-Patent Citations (1)
| Title |
|---|
| 阮新波 金茜: "《包络线跟踪电源技术综述》", 《电工技术学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138343A (en) * | 2019-05-27 | 2019-08-16 | 陕西亚成微电子股份有限公司 | A kind of power supply for radio-frequency power amplifier based on feedback |
| CN110365296A (en) * | 2019-05-27 | 2019-10-22 | 陕西亚成微电子股份有限公司 | A kind of power supply for radio-frequency power amplifier |
| CN110365296B (en) * | 2019-05-27 | 2024-02-13 | 陕西亚成微电子股份有限公司 | Power supply for radio frequency power amplifier |
| WO2021259034A1 (en) * | 2020-06-24 | 2021-12-30 | 中兴通讯股份有限公司 | Envelope amplifier, envelope tracking power amplifier, and signal processing method |
| CN115441883A (en) * | 2021-06-04 | 2022-12-06 | 华为技术有限公司 | Power supply circuit, processing circuit and wireless communication system |
| WO2022252785A1 (en) * | 2021-06-04 | 2022-12-08 | 华为技术有限公司 | Power supply circuit, processing circuit, and wireless communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109768774B (en) | 2022-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109768774A (en) | A kind of power supply for envelope-tracking | |
| CN103329431B (en) | Use the audio frequency amplifier of many level pulse width modulation | |
| JP6325526B2 (en) | Class D audio amplifier with adjustable loop filter characteristics | |
| CN109286375A (en) | A kind of power supply for envelope-tracking | |
| CN101667820B (en) | System and method of changing a PWM power spectrum | |
| CN102067444B (en) | Improved filter for switched mode power supply | |
| CN109768773A (en) | A kind of power supply for envelope-tracking | |
| CN100586008C (en) | Switch amplifier and its modulation method | |
| US20040047477A1 (en) | Power amplification for parametric loudspeaker | |
| KR101500093B1 (en) | System and method for a cascoded amplifier | |
| KR20100108363A (en) | An electrostatic speaker system | |
| EP2332251B1 (en) | Pulse-width modulation with selective pulse-elimination | |
| US9071204B2 (en) | Digital polar and ZVS contour based hybrid power amplifier | |
| EP2870692A1 (en) | Push-pull amplification systems and methods | |
| CN103222189A (en) | Hearing aid with an H-bridge output stage and a method of driving an output stage | |
| JP2009536471A (en) | Power amplifier | |
| CN110365296A (en) | A kind of power supply for radio-frequency power amplifier | |
| US8988049B2 (en) | Multiple switch power stage control tracking PCM signal input | |
| CN108900165A (en) | A kind of power supply for radio-frequency power amplifier | |
| CN107046417A (en) | The integrated simulation delay line of pulse width modulator | |
| WO2020238899A1 (en) | Feedback-based power supply for radio frequency power amplifier | |
| CN109286374A (en) | A kind of power supply for envelope-tracking | |
| CN103491485A (en) | Dual-voice-coil horn D-class digital amplification system and signal processing method thereof | |
| CN110011624A (en) | High integration compound type audio power amplifying circuit structure | |
| CN109546979A (en) | A kind of current detection circuit of loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |