CN101876834B - Tracking power supply device and control method thereof - Google Patents
Tracking power supply device and control method thereof Download PDFInfo
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- CN101876834B CN101876834B CN201010212102.1A CN201010212102A CN101876834B CN 101876834 B CN101876834 B CN 101876834B CN 201010212102 A CN201010212102 A CN 201010212102A CN 101876834 B CN101876834 B CN 101876834B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0261—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A
- H03F1/0266—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A by using a signal derived from the input signal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0261—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A
- H03F1/0272—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A by using a signal derived from the output signal
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/193—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/408—Indexing scheme relating to amplifiers the output amplifying stage of an amplifier comprising three power stages
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a tracking power supply device and a control method thereof. The tracking power supply device comprises a signal generator, a working voltage source, a tracking voltage source and a current source, wherein the working voltage source is used for supplying a first bias voltage and corresponding power to the tracking voltage source; the signal generator is used for sending an input signal to the tracking voltage source and a current conditioning signal to the current source; the tracking voltage source is used for amplifying the input signal according to the first bias voltage supplied by the working voltage source; and the current source is used for outputting currents and the corresponding power according to the current conditioning signal and generating a power supply voltage and a power for a radio-frequency power amplifier according to the amplified input signal output by the tracking voltage source and the currents and the corresponding power which are output by the current source, wherein the tracking voltage source is connected in parallel with the current source. The invention has simple structure, enhances the tracking accuracy, prevents the high-frequency switch loss and enhances the efficiency of the radio-frequency power amplifier by fast tracking a tracking signal sent by a digital signal processing unit.
Description
Technical field
The present invention relates to power supply control field, in particular to tracking power supply device and control method.
Background technology
In modern wireless communication technique, there is the technology that changes radio-frequency power amplifier drain voltage, this technology can be made quick adjustment to the drain voltage of power amplifier tube according to the requirement of system, its range of adjustment can reach tens volts, 100 nanoseconds of adjusting time <, and guarantee higher degree of regulation.This technology can make cellular power amplifier in operational process when not losing RF index all the time in higher efficient state, be particluarly suitable for peak power and the average larger situation of power ratio, thereby greatly reduce radio-frequency power amplifier energy resource consumption.
Current voltage-regulation power device is as linear voltage regulator, although can guarantee fast accurate regulation voltage, efficiency is lower, thereby cannot improve the efficiency of whole power amplifier.And Switching Power Supply, although efficiency is higher, it regulates bandwidth conventionally to only have 100KHz with interior level, cannot meet fast-changing requirement.Although by Switching Power Supply high frequency, make it regulate bandwidth further to increase, semiconductor devices is subject to technique, power, encapsulation technology, switching loss restriction, more than Switching Power Supply switching frequency is difficult to accomplish 10MHz, Switching Power Supply cannot be taken into account high bandwidth and high-level efficiency.In addition Switching Power Supply high frequency noise can be modulated onto radio-frequency carrier, worsens RF linear degree index.
Adjusting for current source, voltage source, can be referring to the schematic diagram shown in Fig. 1, Fig. 2, switched current source shown in Fig. 1 is the controlled current source that a current source is controlled, control signal is from linear amplifier circuit output current, need to detect the output current of linear amplifier circuit, and need to customize corresponding current detecting and amplifying circuit, implement complicated.Controlled switched current source adopts stagnant ring pulse frequency modulation PFM to control, and because its switching frequency is not controlled, causes larger switching loss.
The control schematic diagram of the voltage source shown in Fig. 2, required voltage 304 is switched and is obtained by high speed by a plurality of independently voltage sources 301, voltage source 302, voltage source 303, output voltage precision relies on switch level number, and switch level number is relevant with independent voltage source number, the tracking accuracy of output voltage is limited.And tracking bandwidth is also limited to response time and the switch speed of change-over switch.Higher switching frequency also can cause larger handoff loss.
Scheme in above-mentioned Fig. 1, controls because controlled switched current source adopts stagnant ring PFM, and its control realizes more complicated; Scheme in Fig. 2, its tracking accuracy is limited to the quantity in voltage with multiple levels source, and has larger high frequency handoff loss.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of tracking power supply device and control method, limited at least to solve regulating device complex structure, the tracking accuracy of above-mentioned voltage, electric current, has the problem of larger high frequency handoff loss.
According to an aspect of the present invention, provide a kind of tracking power supply device, comprising: signal generator, working voltage source, tracking voltage source and current source; Working voltage source, for providing the first bias voltage and corresponding power to tracking voltage source; Signal generator, for sending input signal to tracking voltage source, and sends current regulating signal to current source; Tracking voltage source, for the first bias voltage providing according to working voltage source, amplification input signal; Current source, for according to current regulating signal output current and corresponding power; According to the electric current of the input signal after the amplification of tracking voltage source output and current source output and corresponding power, produce supply voltage and power for radio-frequency power amplifier; Wherein, tracking voltage source is in parallel with current source.
According to another aspect of the present invention, also provide a kind of control method based on said apparatus, comprising: signal generator sends input signal to tracking voltage source, and send current regulating signal to current source; Tracking voltage source is used working voltage source that the first bias voltage and corresponding power amplification input signal are provided; Current source is according to current regulating signal output current and corresponding power, and the input signal of electric current and corresponding power and amplification merges supply voltage and the corresponding power obtaining for radio-frequency power amplifier.
Tracking means of the present invention and method, according to real-time voltage signal, and send tracking signal, and send corresponding electric power.The present invention is simple in structure, improved tracking accuracy, avoided high frequency handoff loss.Can follow the tracks of fast the tracking signal that digital signal processing unit sends, produce corresponding electric power, improve the efficiency of radio-frequency power amplifier.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the first power device structure schematic diagram in correlation technique;
Fig. 2 is the second power device structure schematic diagram in correlation technique;
The structural representation of the embodiment 1 that Fig. 3 provides for supply unit of the present invention;
Embodiment 2 structural representations that Fig. 4 provides for supply unit of the present invention;
Fig. 5 is the structural representation of the first signal condition unit in supply unit embodiment of the present invention;
Fig. 6 is the structural representation of the second signal condition unit in supply unit embodiment of the present invention;
Fig. 7 is the structural representation of the third signal condition unit in supply unit embodiment of the present invention;
Fig. 8 is the structural representation of the first tracking voltage source in supply unit embodiment of the present invention;
Fig. 9 is the structural representation of the second tracking voltage source in supply unit embodiment of the present invention;
Figure 10 is the structural representation of the third tracking voltage source in supply unit embodiment of the present invention;
Figure 11 is the structural representation of the first linear regulation pipe in supply unit embodiment of the present invention;
Figure 12 is the structural representation of the second linear regulation pipe in supply unit embodiment of the present invention;
Figure 13 is the structural representation of the third linear regulation pipe in supply unit embodiment of the present invention;
Figure 14 is the structural representation of the 4th kind of linear regulation pipe in supply unit embodiment of the present invention;
Figure 15 is the structural representation of the 5th kind of linear regulation pipe in supply unit embodiment of the present invention;
Figure 16 is the structural representation of the 6th kind of linear regulation pipe in supply unit embodiment of the present invention;
Figure 17 is the structural representation of the 7th kind of linear regulation pipe in supply unit embodiment of the present invention;
Figure 18 is the structural representation of the 8th kind of linear regulation pipe in supply unit embodiment of the present invention;
The structural representation of the embodiment 3 that Figure 19 provides for supply unit of the present invention;
Embodiment 4 structural representations that Figure 20 provides for supply unit of the present invention;
Embodiment 5 structural representations that Figure 21 provides for supply unit of the present invention;
Embodiment 6 structural representations that Figure 22 provides for supply unit of the present invention;
Embodiment 7 structural representations that Figure 23 provides for supply unit of the present invention;
Embodiment 8 structural representations that Figure 24 provides for supply unit of the present invention;
Figure 25 is the first structural representation of the working voltage source isolation network in supply unit embodiment of the present invention;
Figure 26 is the second structural representation of the working voltage source isolation network in supply unit embodiment of the present invention;
Figure 27 is the third structural representation of the working voltage source isolation network in supply unit embodiment of the present invention;
Figure 28 is the embodiment 9 of control method of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
Below in conjunction with accompanying drawing of the present invention, describe each embodiment of the present invention in detail.
For guaranteeing high tracking bandwidth and high tracking accuracy, tracking voltage source 117 is linear amplification units.Tracking voltage source 117 is except input, and output is outer high-end in addition, two external port one 17-H of low side, 117-L.The high-end port one 17-H of tracking voltage source 117 meets the working voltage source 116-1 that it makes it work, and the low side port one 17-L of tracking voltage source 117 can be unsettled, or connected system is with reference to ground 121, or connects auxiliary voltage source 116-2.
It is upper that auxiliary voltage source 116-2 is applied to the low side port one 17-L of tracking voltage source 117, and and tracking voltage source 117 are relations of series connection.Auxiliary voltage source 116-2 can be the constant dc potential source presetting, and can be also adjustable dynamic electric potential source.Auxiliary voltage source 116-2 can be that the bias voltage of tracking voltage source 117 works to guarantee tracking voltage source 117.Auxiliary voltage source 116-2 can be also the part that load 120 supply voltages 119 form, accessory power supply 116-2 and tracking voltage source 117 are relations of coupled in series, and by coupled in series relation, output voltage are separately superimposed and merge the required supply voltage 119 of output load 120.Auxiliary voltage source 116-2 makes the bias voltage of tracking voltage source 117 normal operations and the part that load 120 supply voltages 119 form.
Working voltage source 116-1 is applied on the high-end port one 17-H of tracking voltage source 117, and working voltage source 116-1 is the bias voltage of tracking voltage source 117, to guarantee tracking voltage source 117 normal operations.Working voltage source 116-1 can be the constant dc potential source presetting, and can be also adjustable dynamic electric potential source, and conditioning signal 210-1 is from digital signal processing unit 110, and governing speed is also transformable.
Working voltage source 116-1 and auxiliary voltage source 116-2 can be high efficiency switching mode voltage sources, and current source 118 can be high efficiency switching mode current source.Can guarantee the high-level efficiency of whole supply unit like this.
Embodiment 2
The structural drawing of embodiment 2 as shown in Figure 4, embodiment 2 structural representations that provide for supply unit of the present invention.Compare with embodiment 1, increased working voltage source, auxiliary voltage source and current source number.There is working voltage source 1 to working voltage source n, be respectively working voltage source 116-11, working voltage source 116-12 ... working voltage source 116-1n; N auxiliary voltage source, auxiliary voltage source 116-21, auxiliary voltage source 116-22 ... a plurality of voltage sources such as auxiliary voltage source 116-2n act on tracking voltage source 117 simultaneously.210-11,210-12....210-1n, 210-21,210-22 ... 210-2n is respectively conditioning signal separately, and these conditioning signals are all produced and obtained by digital signal processing unit 110.There is n current source, be respectively current source 118-1, current source 118-2 .... current source 118-n acts on load 120 simultaneously.310-1,310-2 ... 310-n is respectively conditioning signal separately, and these conditioning signals are all to be produced and obtained by digital signal processing unit 110.
Auxiliary voltage source 116-21, auxiliary voltage source 116-22 ... auxiliary voltage source 116-2n and current source 118-1, current source 118-2 .... and current source 118-n can be each other uncorrelated also can be respectively by being connected in series composition of relations together.
In each embodiment of the present invention, can there be various ways signal condition unit, as shown in Figure 5, is the structural representation of the first signal condition unit in supply unit embodiment of the present invention.Conditioning unit 114 is in series by two biasing circuits and a filtering and amplifying circuit.Tracked simulating signal 113 is first passed through biasing circuit 114-1, then passes through amplification filtering unit 114-2, finally by crossing biasing circuit 114-3, becomes the input signal 115 of tracking voltage source 117.
As shown in Figure 6, be the structural representation of the second signal condition unit in supply unit embodiment of the present invention.Conditioning unit 114 is in series by two filtering and amplifying circuits and a biasing circuit.Tracked simulating signal 113 is first passed through filtering and amplifying circuit 114-1, then passes through biasing circuit 114-2, finally by crossing filtering and amplifying circuit 114-3, becomes the input signal 115 of tracking voltage source 117.
As shown in Figure 7, be the structural representation of the third signal condition unit in supply unit embodiment of the present invention.Conditioning unit 114 is in series by a plurality of amplification filtering unit 114-1 to 114-(2n-1) and a plurality of biasing circuits unit 114-2 to 114-2n.Tracked simulating signal 113 is passed through respectively amplification filtering unit 1, biasing circuit 1, and amplification filtering unit 2, biasing circuit 2 ... amplification filtering unit n, biasing circuit n, finally obtains the input signal 115 of tracking voltage source 117.This embodiment is not limited to amplification filtering unit and the staggered processing of biasing circuit, can also be amplification filtering unit and biasing circuit multiple combination mode, and embodiment enumerates no longer one by one here.
In each embodiment of the present invention, also can there be various ways signal condition unit, describes in detail below.As shown in Figure 8, be the structural representation of the first tracking voltage source in supply unit embodiment of the present invention.Linearity is enlarged into open loop and controls, a plurality of linear amplification filtering unit 117-1 of signal 115 process that are exaggerated, 117-2 ... 117-n, finally promote linear regulation pipe 117-0 and carry out power amplification, the output of linear regulation pipe is exactly the supply voltage 119 that load 120 needs.Here 117-1,117-2 ... 117-n amplifying unit can be high speed operation amplifier, the differential amplification structure being formed by discrete device, or CLASS is A, CLASS B, CLASS AB class structure for amplifying.Between them by being composed in series the relation of cascade.Working voltage source 116-1 and auxiliary voltage source 116-2 directly act on linear regulation pipe 117-0.
As shown in Figure 9, be the structural representation of the second tracking voltage source in supply unit embodiment of the present invention.Tracking voltage source 117 is closed-loop control, and output voltage 119 is fed after the sampling of network 117-111 dividing potential drop.Act on error amplifier 117-1, be exaggerated signal 115 and also act on error amplifier, both compare amplification.The output of error amplifier is error amplification signal 117-11, and error amplification signal is through multistage linear amplification filtering unit 117-2, and 117-3...117-n finally becomes the driving signal 117-00 of linear regulation pipe 117-0.The output of linear regulation pipe 117-0 is exactly the supply voltage 119 that load needs.Error amplifier 117-1 and each linear amplification filtering unit are by being composed in series the relation of cascade.Working voltage source 116-1 and auxiliary voltage source 116-2 directly act on linear regulation pipe 117-0.
In order to guarantee system performance and stability, also need corrective network 117-112, corrective network 117-112 acts on feedback network 117-111, also act on error amplifier 117-1, linear amplification filtering unit 117-2,117-3 simultaneously, ... 117-n, acts on linear regulation pipe 117-0 in addition.Corrective network can adopt the form of circuit to realize, and is generally the passive network consisting of resistance, electric capacity.
As shown in figure 10, be the structural representation of the third tracking voltage source in supply unit embodiment of the present invention.Tracking voltage source 117 is closed-loop control, and is two closed-loop controls, exists two to overlap independently feedback network 117-111,117-211.Two cover corrective network 117-112,117-212.Output voltage 119 passes through feedback network 117-111 simultaneously, 117-211, obtain sampled signal separately, act on respectively error amplifier 117-11 separately, 117-21, as its input signal, is exaggerated signal 115 and acts on error amplifier 117-11 simultaneously, 117-21, as its another input signal.Error amplifier 117-11, the error amplification signal of 117-21 output is respectively through multistage linear amplification filtering unit 117-11 separately, 117-12, ... 117-1n, 117-21,117-22 ... 117-2n, by multistage amplification, be driving signal 117-10 and the 117-20 of linear regulation pipe 117-0 afterwards, these two driving signals act on linear regulation pipe 117-0 simultaneously.Corrective network 117-112,117-212 acts on respectively feedback control loop unit separately, envelope feedback network, error amplifier, linear amplification filtering unit, linear regulation pipe.By corrective network, guarantee whole floating voltage source stability and necessary performance index.
In each embodiment of the present invention, linear regulation pipe 117-0 also can have various ways, describes in detail below.As shown in figure 11, be the structural representation of the first linear regulation pipe in supply unit embodiment of the present invention.Linear regulation pipe is a single tube structure, and is N-channel MOS FET.
As shown in figure 12, be the structural representation of the second linear regulation pipe in supply unit embodiment of the present invention.Linear regulation pipe is a single tube structure, and is P channel mosfet.
As shown in figure 13, be the structural representation of the third linear regulation pipe in supply unit embodiment of the present invention; Linear regulation pipe is a double pipe structure, and two-tube is all N-channel MOS FET.117-001 is the driving signal of high-end adjustable pipe 117-01, and 117-002 is the driving signal of low side adjustable pipe 117-02.Working voltage source 116-1 acts on high-end adjustable pipe 117-01, and auxiliary voltage source 116-2 acts on low side adjustable pipe 117-02.The embodiment the following describes is identical or approximate therewith, repeats no longer one by one.
As shown in figure 14, be the structural representation of the 4th kind of linear regulation pipe in supply unit embodiment of the present invention; Linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is N-channel MOS FET, and low side pipe 117-02 is P channel mosfet.
As shown in figure 15, be the structural representation of the 5th kind of linear regulation pipe in supply unit embodiment of the present invention.Linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is P channel mosfet, and low side pipe 117-02 is N-channel MOS FET.
As shown in figure 16, be the structural representation of the 6th kind of linear regulation pipe in supply unit embodiment of the present invention.Linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is P channel mosfet, and low side pipe 117-02 is P channel mosfet.
Above, working voltage source 116-1 and accessory power supply 116-2 directly act on linear regulation pipe 117-0 source class or drain electrode.Working voltage source 116-1 directly acts on high-end linear regulation pipe 117-01 source class or leaks level.Accessory power supply 116-2 directly acts on low side linear regulation pipe 117-02 source class or drain electrode.
As shown in figure 17, be the structural representation of the 7th kind of linear regulation pipe in supply unit embodiment of the present invention.Linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is NPN triode, and low side pipe 117-02 is PNP triode.
As shown in figure 18, be the structural representation of the 8th kind of linear regulation pipe in supply unit embodiment of the present invention.Linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is NPN triode, and low side pipe 117-02 is NPN triode.Outside two embodiment that above enumerate, NPN triode and PNP triode can also have other multiple combinations, at this, enumerate no longer one by one.
Above, working voltage source 116-1 and auxiliary voltage source 116-2 directly act on linear regulation pipe 117-0 current collection level or emitting stage.Working voltage source 116-1 directly acts on high-end linear regulation pipe 117-01 current collection level or emitting stage.Accessory power supply 116-2 directly acts on low side linear regulation pipe 117-02 current collection level or emitting stage.
As shown in figure 19, embodiment 3 structural representations that provide for supply unit of the present invention.Tracking voltage source 117 is powered by a working voltage source 116-1.The reference ground 121 of the low terminating systems of tracking voltage source 117.Current source 118 one end are connected with tracking voltage source 117 outputs 119, the reference ground 121 of other end connected system.Digital signal processing unit 110 sends the conditioning signal 310 of current source 118, so that the output tracking conditioning signal of current source 118.Working voltage source 116-1 is subject to the adjusting of digital signal processing unit 110 simultaneously, guarantees working voltage source 116-1 output tracking conditioning signal 210-1.
As shown in figure 20, embodiment 4 structural representations that provide for supply unit of the present invention.Tracking voltage source 117 is powered by a working voltage source 116-1.The low side of tracking voltage source 117 is unsettled not to be connect.Current source 118 one end are connected with tracking voltage source 117 outputs 119, the reference ground 121 of other end connected system.Digital signal processing unit 110 sends the conditioning signal 310 of current source 118, so that the output of current source 118 is consistent with conditioning signal.Working voltage source 116-1 is also subject to the adjusting of digital signal processing unit 110 simultaneously, guarantees working voltage source 116-1 output tracking conditioning signal 210-1.
As shown in figure 21, embodiment 5 structural representations that provide for supply unit of the present invention.The high termination working voltage source 116-1 of tracking voltage source 117, the low termination auxiliary voltage source 116-2 of tracking voltage source 117.Current source 118 one end are connected with tracking voltage source 117 outputs 119, the reference ground 121 of other end welding system.Digital signal processing unit 110 sends the conditioning signal 310 of current source 118, so that the output tracking conditioning signal of current source 118.Digital signal processing unit 110 sends respectively working voltage source 116-1, the conditioning signal 210-1 of auxiliary voltage source 116-2, and 210-2, so that working voltage source, conditioning signal is separately followed the tracks of respectively in auxiliary voltage source output.
As shown in figure 22, be embodiment 6 structural representations that supply unit of the present invention provides, the high termination working voltage source 116-1 of tracking voltage source 117, the low termination auxiliary voltage source 116-2 of tracking voltage source 117.Current source 118 one end are connected with tracking voltage source 117 outputs 119, the output terminal of another termination auxiliary voltage source 116-2, and the output terminal connecing can be anode, can be also negative terminal.Digital signal processing unit 110 sends the conditioning signal 310 of current source 118, so that the output tracking conditioning signal of current source 118.Working voltage source 116-1 and auxiliary voltage source 116-2 are also subject to respectively digital signal processing unit conditioning signal 210-1, and 210-2 regulates.So that voltage source output tracking conditioning signal.
As shown in figure 23, embodiment 7 structural representations that provide for supply unit of the present invention, the high termination working voltage source 116-1 of tracking voltage source 117, a plurality of auxiliary voltage source 116-21 of low termination of tracking voltage source 117,116-22, ... 116-2n, wherein these a plurality of auxiliary voltage sources are relations of series connection.A plurality of current source 118-1,118-2 ... 118-n acts on load 120 simultaneously, and the tandem simultaneously of their one end is in output 119, the other end respectively with voltage source 116-21,116-22 ... the anode of 116-2n or negative terminal are connected.Digital signal processing unit 110 is respectively to current source 118-1,118-2 ... 118-n makes independent regulation, so that current source follow current conditioning signal.Digital signal processing unit 110 is respectively to working voltage source 116-1, auxiliary voltage source 116-21, and 116-22 ... 116-2n makes independent regulation, so that voltage source floating voltage conditioning signal.Above plurality of voltages conditioning signal and multichannel current regulating signal be corresponding voltage source and current source separately one by one.
As shown in figure 24, be embodiment 8 structural representations that supply unit of the present invention provides, a plurality of working voltage source 116-11 of the high termination of tracking voltage source 117,116-12,116-13...116-1n, a plurality of auxiliary voltage source 116-21 of its low termination, 116-22 ... 116-2n.Wherein these a plurality of auxiliary voltage sources are relations of series connection, and these a plurality of working voltage sources are relations in parallel.A plurality of current source 118-1,118-2 ... 118-n acts on load 120 simultaneously, the tandem simultaneously of their one end is in output 119, the other end respectively with auxiliary voltage source 116-21,116-22 ... the anode of 116-2n or negative terminal are connected, a plurality of working voltage source 116-11,116-12 ... 116-1n passes through respectively a plurality of isolation network 116-110,116-120,116-130...116-1n0 be connected in parallel, the rear high-end power supply of tracking voltage source 117 of giving in parallel.Digital signal processing unit 110 sends regulated voltage signal 210-11,210-12, ... 210-1n, pass through respectively each isolation network 116-110,116-120 ... 116-1n0 acts on working voltage source, make in certain definite moment by each working voltage source 116-11,116-12 ... in 116-1n one give tracking voltage source 117 power supplies, thereby what give tracking voltage source 117 power supplies is one group of many sequence of levels of determining.
Digital signal processing unit 110 is respectively to current source 118-1,118-2, ... 118-n and auxiliary voltage source 116-21,116-22 ... 116-2n makes independent regulation, so that auxiliary current source output tracking current regulating signal 310-1,310-2 ... 310-n, auxiliary voltage source output tracking regulated voltage signal 210-21,210-22 ... 210-2n.The plurality of voltages conditioning signal that above digital signal processing unit 110 sends and multichannel current regulating signal be corresponding auxiliary voltage source and current source separately one by one.
Each isolation network 116-110,116-120, ... 116-1n0 be corresponding each by change-over switch 116-1101,116-1201 ... 116-1n01, each driving circuit 116-1103,116-1203, ... 116-1n03 and each isolating diode 116-1102,116-1202 ... the active network that 116-1n02 forms.Change-over switch and isolating diode are the relations of series connection.Drive unit is to control change-over switch conducting or shutoff.The regulated voltage signal 210 that digital signal processing unit 110 sends carrys out switch operating voltage source 116-11 by acting on drive unit, 116-12 ... 116-1n is to tracking voltage source 117.
In each embodiment of the present invention, isolation network also can have various ways, describes in detail below.As shown in figure 25, be the first structural representation of the working voltage source isolation network in supply unit embodiment of the present invention.In this embodiment, digital signal processing unit 110 drives 116-1103 to 1161n03 to connect corresponding each change-over switch 116-1101 to 1161n01 and each working voltage source 116-11 to 116-1n by each respectively, and each change-over switch 116-1101 to 1161n01 connects corresponding isolating diode 116-1102 to 1161n02.
As shown in figure 26, be the second structural representation of the working voltage source isolation network in supply unit embodiment of the present invention.Be from the different of the isolation network shown in Figure 25, the change-over switch that each driving circuit in the isolation network of Figure 25 connects is between working voltage source and diode; Diode in isolation network shown in Figure 26 is between working voltage source and change-over switch.
As shown in figure 27, embodiment 3 structural representations that further disclose for the working voltage source isolation network 116-1n0 in supply unit of the present invention.Only, with a change-over switch 116-1101, a diode 116-1103 has just completed two working voltage source 116-11, and the level of 116-12 switches.Wherein working voltage source 116-11 is higher and connect with change-over switch pipe 116-1101, and working voltage source 116-12 is lower and connect with diode 116-1103.Here change-over switch 116-1101 can be N-channel MOS FET or P channel mosfet.Digital signal processing unit 110 sends regulated voltage signal 210-1 and drives 116-1102 to guarantee output tracking regulated voltage signal by acting on.
The present invention also provides a kind of control method based on above-mentioned tracking means, and ginseng process flow diagram as shown in Figure 28, comprises the following steps:
S281: signal generator sends input signal to tracking voltage source, and send current regulating signal to current source;
S282: tracking voltage source provides the first bias voltage amplification input signal by working voltage source;
S283: current source, according to described current regulating signal output current and corresponding power, obtains for the supply voltage of radio-frequency power amplifier and the power of supply with the input signal merging of described amplification.
In the step S281 of above-mentioned control method, also comprise: signal generator also sends the first regulated voltage signal, control the first bias voltage that described working voltage source sends.
Also comprise: the auxiliary voltage source of the second bias voltage and corresponding power is provided to described tracking voltage source, and described signal generator also sends second voltage conditioning signal to described auxiliary voltage source and controls it and send the second bias voltage.Described auxiliary voltage source also provides output power with the described in the same way radio-frequency power amplifier of described current source one.
Describe each embodiment of the present invention above in detail, tracking means of the present invention and method, may be used in various electronic equipments, as base station, transmitter, etc. less radio-frequency equipment, in the time of in being applied in base station equipment, base station signal processing unit calculates the voltage signal that represents different transmission power in real time according to current load, and sends tracking signal, by device of the present invention, sends corresponding electric power.The present invention is simple in structure, improved tracking accuracy, avoided high frequency handoff loss.Can follow the tracks of fast the tracking signal that digital signal processing unit sends, produce corresponding electric power, improve the efficiency of base station radio-frequency power amplifier.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in memory storage and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a tracking power supply device, is characterized in that, comprising: signal generator, working voltage source, tracking voltage source and current source;
Described working voltage source, for providing the first bias voltage and corresponding power to described tracking voltage source;
Described signal generator, for sending input signal to described tracking voltage source, and sends current regulating signal to described current source;
Described tracking voltage source, the first bias voltage for providing according to described working voltage source, amplifies described input signal;
Described current source, for according to described current regulating signal output current and corresponding power;
According to the described electric current of the described input signal after the amplification of described tracking voltage source output and the output of described current source and corresponding power, produce supply voltage and power for radio-frequency power amplifier; Wherein, described tracking voltage source is in parallel with described current source.
2. device according to claim 1, is characterized in that,
Described signal generator is also for sending the first regulated voltage signal to described working voltage source;
Described working voltage source is also for providing corresponding described the first bias voltage according to described the first regulated voltage signal to described tracking voltage source.
3. device according to claim 1, is characterized in that, described signal generator comprises:
Digital signal processing unit, for the tracking signal of generating digital form, described current regulating signal and described the first regulated voltage signal;
D/A modular converter, for being converted to simulating signal by described tracking signal;
Signal condition unit, comprises amplifilter, for tracking signal described in amplification filtering, obtains described input signal; Biasing circuit, for providing voltage bias to described amplifilter.
4. device according to claim 1, it is characterized in that, also comprise: auxiliary voltage source, for the second voltage conditioning signal sending according to described signal generator, output offers the second bias voltage and the corresponding power of described tracking voltage source, and the output that connects described tracking voltage source by described current source, together export with described current source the output power that radio-frequency power amplifier is provided;
Described signal generator is also for sending described second voltage conditioning signal.
5. device according to claim 4, is characterized in that, described tracking voltage source comprises:
The amplifying unit of a plurality of cascades, for amplifying step by step described input signal, the output terminal of the afterbody of described amplifying unit connects linear adjustable pipe;
Described linear regulation pipe, under the second bias voltage providing for the first bias voltage of providing at described working voltage source and described auxiliary voltage source, the input signal amplifying step by step described in amplification, obtains the described supply voltage for radio-frequency power amplifier.
6. device according to claim 5, is characterized in that, described amplifying unit is linear amplifilter, exclusive disjunction amplifier.
7. device according to claim 5, is characterized in that, also comprises error amplifier, feedback circuit; Described feedback circuit, for feeding back described tracking voltage source output voltage to described error amplifier, described error amplifier is used for the signal of described feedback and described input signal comparison, and the error signal comparing is sent to described amplifying unit.
8. device according to claim 7, is characterized in that, also comprises compensating circuit, is used to described feedback circuit, error amplifier, amplifying unit and linear amplifier tube that the compensation of signal is provided.
9. device according to claim 4, is characterized in that, the quantity of described working voltage source is a plurality of and parallel with one another, and described device also comprises buffer circuit, the first digital signal processing unit;
Described the first digital signal processing unit, is used to each working voltage source to send respectively corresponding the first regulated voltage signal;
Described buffer circuit, is connected to described in each between working voltage source and described tracking voltage source, for conducting or disconnect described working voltage source and described tracking voltage source between connection;
The quantity of described auxiliary voltage source is a plurality of and series connection mutually, and the quantity of described current source is a plurality of and is connected in parallel on corresponding described in each between auxiliary voltage source and the output of described tracking voltage source;
Described device also comprises the second digital signal processing unit;
Described the second digital signal processing unit, is used to each auxiliary voltage source to send respectively corresponding second voltage conditioning signal, for each current source sends corresponding current regulating signal.
10. device according to claim 9, is characterized in that, described buffer circuit comprises change-over switch, driving circuit, isolating diode;
Described driving circuit, for send control described change-over switch conducting or by control signal;
Described change-over switch, for conducting or cut-off under the triggering of described driving circuit;
Described isolating diode, connects with described change-over switch.
11. 1 kinds of control methods based on device described in claim 1, is characterized in that, comprising:
Described signal generator sends input signal to described tracking voltage source, and sends current regulating signal to described current source;
Described tracking voltage source is used described working voltage source that input signal described in the first bias voltage and corresponding power amplification is provided;
Described current source is according to described current regulating signal output current and corresponding power, and the input signal of described electric current and corresponding power and described amplification merges supply voltage and the corresponding power obtaining for radio-frequency power amplifier.
12. control methods according to claim 11, is characterized in that, also comprise:
Signal generator also sends the first regulated voltage signal, controls the first bias voltage that described working voltage source sends;
Also comprise: the auxiliary voltage source of the second bias voltage and corresponding power is provided to described tracking voltage source, and described signal generator also sends second voltage conditioning signal to described auxiliary voltage source and controls it and send the second bias voltage;
The described in the same way radio-frequency power amplifier of described auxiliary voltage source and described current source one provides output power.
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| CN201010212102.1A CN101876834B (en) | 2010-06-23 | 2010-06-23 | Tracking power supply device and control method thereof |
| PCT/CN2010/075917 WO2011160330A1 (en) | 2010-06-23 | 2010-08-11 | Tracking power supply device and controlling method thereof |
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| CN102955486B (en) * | 2012-10-24 | 2014-10-22 | 广东电网公司电力科学研究院 | High-voltage large-power frequency conversion adjustable constant voltage source |
| CN104617900B (en) * | 2015-01-19 | 2017-12-08 | 信阳农林学院 | A kind of network signal transmits amplifying circuit |
| JP2020202528A (en) * | 2019-06-13 | 2020-12-17 | 株式会社村田製作所 | High frequency circuit and communication device |
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| CN1443395A (en) * | 2000-05-05 | 2003-09-17 | 艾利森电话股份有限公司 | Apparatus and method for efficiently amplifying wideband envelope signals |
| CN1790920A (en) * | 2004-12-17 | 2006-06-21 | 安德鲁公司 | A transmitter with an envelope tracking power amplifier utilizing digital predistortion of the signal envelope |
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| US6646501B1 (en) * | 2002-06-25 | 2003-11-11 | Nortel Networks Limited | Power amplifier configuration |
| US7359680B2 (en) * | 2004-09-14 | 2008-04-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Delay calibration in polar modulation transmitters |
| JP2006325096A (en) * | 2005-05-20 | 2006-11-30 | Matsushita Electric Ind Co Ltd | High-frequency power amplifier |
| US20080179948A1 (en) * | 2005-10-31 | 2008-07-31 | Mks Instruments, Inc. | Radio frequency power delivery system |
| CN101247153B (en) * | 2008-03-13 | 2011-11-30 | 中兴通讯股份有限公司 | Method for improving power amplifier efficiency and digital predistortion broadband communicator |
| US7808323B2 (en) * | 2008-05-23 | 2010-10-05 | Panasonic Corporation | High-efficiency envelope tracking systems and methods for radio frequency power amplifiers |
| CN101610069B (en) * | 2008-06-20 | 2011-08-24 | 瑞昱半导体股份有限公司 | Power amplifier, power amplifying circuit and power amplifying method |
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| CN1443395A (en) * | 2000-05-05 | 2003-09-17 | 艾利森电话股份有限公司 | Apparatus and method for efficiently amplifying wideband envelope signals |
| CN1790920A (en) * | 2004-12-17 | 2006-06-21 | 安德鲁公司 | A transmitter with an envelope tracking power amplifier utilizing digital predistortion of the signal envelope |
| US7679433B1 (en) * | 2007-02-02 | 2010-03-16 | National Semiconductor Corporation | Circuit and method for RF power amplifier power regulation and modulation envelope tracking |
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