CN101876834A - Tracking power supply device and control method thereof - Google Patents
Tracking power supply device and control method thereof Download PDFInfo
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- CN101876834A CN101876834A CN2010102121021A CN201010212102A CN101876834A CN 101876834 A CN101876834 A CN 101876834A CN 2010102121021 A CN2010102121021 A CN 2010102121021A CN 201010212102 A CN201010212102 A CN 201010212102A CN 101876834 A CN101876834 A CN 101876834A
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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
-
- 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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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 the modern wireless communication technique, have the technology that changes the 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, and its range of adjustment can reach tens volts, adjusting time＜100 nanosecond, and guarantee higher degree of regulation.This technology can make cellular power amplifier be in higher efficient state all the time in operational process when not losing RF index, be particluarly suitable for peak power and the average bigger situation of power ratio, thereby significantly reduce the radio-frequency power amplifier energy resource consumption.
Present voltage-regulation power device such as linear voltage regulator, though can guarantee fast accurate regulation voltage, efficient is lower, thereby can't improve the efficient of whole power amplifier.And Switching Power Supply, though efficient is higher, it is regulated bandwidth and has only 100KHz usually with interior level, can't satisfy fast-changing requirement.Though with the Switching Power Supply high frequencyization, making it regulate bandwidth can further increase, semiconductor devices is subjected to technology, power, encapsulation technology, switching loss restriction, the Switching Power Supply switching frequency is difficult to accomplish that more than the 10MHz, Switching Power Supply can't be taken into account high bandwidth and high-level efficiency.The Switching Power Supply high frequency noise can be modulated onto radio-frequency carrier in addition, worsens RF linear degree index.
Adjusting for current source, voltage source, can be referring to Fig. 1, synoptic diagram shown in Figure 2, switched current source shown in Fig. 1 is the controlled current source of a current source control, control signal is from the linear amplifier circuit output current, need to detect the output current of linear amplifier circuit, and need corresponding current detecting of customization and amplifying circuit, implement complicated.Controlled switched current source adopts the ring pulse frequency modulation PFM control that stagnates, because its switching frequency is not controlled, causes bigger switching loss.
The control synoptic diagram of voltage source shown in Figure 2, required voltage 304 is got by switching at a high speed by a plurality of independently voltage sources 301, voltage source 302, voltage source 303, the output voltage precision relies on the switch level number, and the switch level number is relevant with the independent voltage source number, and the tracking accuracy of output voltage is limited.And tracking bandwidth also is subject to the response time and the switch speed of change-over switch.Higher switching frequency also can cause bigger handoff loss.
Scheme among above-mentioned Fig. 1, because controlled switched current source adopts the ring PFM control that stagnates, its control realizes more complicated; Scheme among Fig. 2, its tracking accuracy is subject to the quantity in voltage with multiple levels source, and has bigger 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, and is limited with the regulating device complex structure, the tracking accuracy that solve above-mentioned voltage, electric current at least, has the problem of bigger 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 is used for providing first bias voltage and corresponding power to tracking voltage source; Signal generator is used to send input signal to tracking voltage source, and sends current regulating signal to current source; First bias voltage that provides according to working voltage source, amplification input signal are provided tracking voltage source; Current source is used for according to current regulating signal output current and corresponding power; Electric current and corresponding power according to input signal after the amplification of tracking voltage source output and current source output produce the supply voltage and the power that are used 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 sends current regulating signal to current source; Tracking voltage source uses working voltage source that 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 that obtains being used for radio-frequency power amplifier.
Tracking means of the present invention and method according to real-time voltage signal, and are sent tracking signal, and send corresponding electric power.The present invention is simple in structure, improved tracking accuracy, avoided the high frequency handoff loss.Can follow the tracks of the tracking signal that digital signal processing unit sends fast, produce corresponding electric power, improve the efficient of radio-frequency power amplifier.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is first kind of power device structure synoptic diagram in the correlation technique;
Fig. 2 is second kind of power device structure synoptic diagram in the 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 first kind of signal condition unit among the supply unit embodiment of the present invention;
Fig. 6 is the structural representation of second kind of signal condition unit among the supply unit embodiment of the present invention;
Fig. 7 is the structural representation of the third signal condition unit among the supply unit embodiment of the present invention;
Fig. 8 is the structural representation of first kind of tracking voltage source among the supply unit embodiment of the present invention;
Fig. 9 is the structural representation of second kind of tracking voltage source among the supply unit embodiment of the present invention;
Figure 10 is the structural representation of the third tracking voltage source among the supply unit embodiment of the present invention;
Figure 11 is the structural representation of first kind of linear regulation pipe among the supply unit embodiment of the present invention;
Figure 12 is the structural representation of second kind of linear regulation pipe among the supply unit embodiment of the present invention;
Figure 13 is the structural representation of the third linear regulation pipe among the supply unit embodiment of the present invention;
Figure 14 is the structural representation of the 4th kind of linear regulation pipe among the supply unit embodiment of the present invention;
Figure 15 is the structural representation of the 5th kind of linear regulation pipe among the supply unit embodiment of the present invention;
Figure 16 is the structural representation of the 6th kind of linear regulation pipe among the supply unit embodiment of the present invention;
Figure 17 is the structural representation of the 7th kind of linear regulation pipe among the supply unit embodiment of the present invention;
Figure 18 is the structural representation of the 8th kind of linear regulation pipe among the 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 first kind of structural representation of the working voltage source isolation network among the supply unit embodiment of the present invention;
Figure 26 is second kind of structural representation of the working voltage source isolation network among the supply unit embodiment of the present invention;
Figure 27 is the third structural representation of the working voltage source isolation network among the supply unit embodiment of the present invention;
Figure 28 is the embodiment 9 of control method of the present invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up 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.
Auxiliary voltage source 116-2 is applied on the low side port one 17-L of tracking voltage source 117, and and tracking voltage source 117 be the series connection relation.Auxiliary voltage source 116-2 can be the constant dc potential source that presets, and also can be adjustable dynamic electric voltage source.Auxiliary voltage source 116-2 can be that the bias voltage of tracking voltage source 117 is to guarantee tracking voltage source 117 operate as normal.Auxiliary voltage source 116-2 also can be the part that load 120 supply voltages 119 are formed, accessory power supply 116-2 and tracking voltage source 117 are relations of coupled in series, and will output voltage separately be superimposed by coupled in series relation and merge the required supply voltage 119 of output load 120.Auxiliary voltage source 116-2 can also be that to make the bias voltage of tracking voltage source 117 operate as normal be again the part that load 120 supply voltages 119 are formed.
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 operate as normal.Working voltage source 116-1 can be the constant dc potential source that presets, and also can be adjustable dynamic electric voltage source, and conditioning signal 210-1 is from digital signal processing unit 110, and governing speed also is 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.Working voltage source 1 is arranged 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 a conditioning signal separately, and these conditioning signals are all produced and got by digital signal processing unit 110.N current source arranged, 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 a conditioning signal separately, and these conditioning signals all are to be produced and got 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 the signal condition unit, as shown in Figure 5, is the structural representation of first kind of signal condition unit among the supply unit embodiment of the present invention.Conditioning unit 114 is in series by two biasing circuits and an amplification filtering circuit.Tracked simulating signal 113 is passed through amplification filtering unit 114-2 more earlier through biasing circuit 114-1, becomes the input signal 115 of tracking voltage source 117 at last through biasing circuit 114-3.
As shown in Figure 6, be the structural representation of second kind of signal condition unit among the supply unit embodiment of the present invention.Conditioning unit 114 is in series by two amplification filtering circuit and a biasing circuit.Tracked simulating signal 113 is passed through biasing circuit 114-2 more earlier through amplification filtering circuit 114-1, becomes the input signal 115 of tracking voltage source 117 at last through amplification filtering circuit 114-3.
As shown in Figure 7, be the structural representation of the third signal condition unit among the 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 amplification filtering unit 1 respectively, 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 the multiple array mode of amplification filtering unit and biasing circuit, and embodiment enumerates no longer one by one here.
In each embodiment of the present invention, also can there be various ways the signal condition unit, describes in detail below.As shown in Figure 8, be the structural representation of first kind of tracking voltage source among the supply unit embodiment of the present invention.Linear amplification is open loop control, the a plurality of linear amplification filter unit 117-1 of signal 115 processes that are exaggerated, 117-2 ... 117-n, promote linear regulation pipe 117-0 at last 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 ... the 117-n amplifying unit can be a high speed operation amplifier, the difference structure for amplifying of forming 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 second kind of tracking voltage source among the supply unit embodiment of the present invention.Tracking voltage source 117 is closed-loop control, after output voltage 119 is fed 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 filter unit 117-2, and 117-3...117-n finally becomes the drive 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 filter 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 simultaneously, linear amplification filter unit 117-2,117-3, ... 117-n acts on linear regulation pipe 117-0 in addition.Corrective network can adopt the form of circuit to realize, generally is the passive network that is made of resistance, electric capacity.
As shown in figure 10, be the structural representation of the third tracking voltage source among the 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 error amplifier 117-11 separately respectively, 117-21 as its input signal, is exaggerated signal 115 and acts on error amplifier 117-11 simultaneously, 117-21 is as its another input signal.Error amplifier 117-11, the error amplification signal of 117-21 output is respectively through separately multistage linear amplification filter unit 117-11,117-12, ... 117-1n, 117-21,117-22 ... 117-2n, by multistage amplification back is driving signal 117-10 and the 117-20 of linear regulation pipe 117-0, and these two driving signals act on linear regulation pipe 117-0 simultaneously.Corrective network 117-112,117-212 act on feedback control loop unit separately, envelope feedback network, error amplifier, linear amplification filter unit, linear regulation pipe respectively.Guarantee whole floating voltage source stability and necessary performance index by corrective network.
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 first kind of linear regulation pipe among the supply unit embodiment of the present invention.The linear regulation pipe is a single tube structure, and is N-channel MOS FET.
As shown in figure 12, be the structural representation of second kind of linear regulation pipe among the supply unit embodiment of the present invention.The linear regulation pipe is a single tube structure, and is the P channel mosfet.
As shown in figure 13, be the structural representation of the third linear regulation pipe among the supply unit embodiment of the present invention; The linear regulation pipe is a double pipe structure, and two-tube all is N-channel MOS FET.117-001 is the drive signal of high-end adjustable pipe 117-01, and 117-002 is the drive 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 that describes below is identical therewith or approximate, gives unnecessary details no longer one by one.
As shown in figure 14, be the structural representation of the 4th kind of linear regulation pipe among the supply unit embodiment of the present invention; The 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 the P channel mosfet.
As shown in figure 15, be the structural representation of the 5th kind of linear regulation pipe among the supply unit embodiment of the present invention.The linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is the 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 among the supply unit embodiment of the present invention.The linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is the P channel mosfet, and low side pipe 117-02 is the P channel mosfet.
More than, 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 among the supply unit embodiment of the present invention.The linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is the NPN triode, and low side pipe 117-02 is the PNP triode.
As shown in figure 18, be the structural representation of the 8th kind of linear regulation pipe among the supply unit embodiment of the present invention.The linear regulation pipe is a double pipe structure, and its high-end tubes 117-01 is the NPN triode, and low side pipe 117-02 is the NPN triode.Divided by on outside two embodiment enumerating, NPN triode and PNP triode can also have other multiple combinations, enumerate no longer one by one at this.
More than, 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 1 ends link to each other 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 subjected 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 1 ends link to each other 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 also is subjected 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 1 ends link to each other 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 working voltage source 116-1 respectively, 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 in auxiliary voltage source output respectively.
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 1 ends link to each other with tracking voltage source 117 outputs 119, the output terminal of another termination auxiliary voltage source 116-2, and the output terminal that is connect can be an anode, also can be 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 also are subjected to digital signal processing unit conditioning signal 210-1 respectively, 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, the a plurality of auxiliary voltage source 116-21 of the 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 end is in output 119, the other end respectively with voltage source 116-21,116-22 ... the anode of 116-2n or negative terminal link to each other.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.Corresponding one by one voltage source and the current source separately of above plurality of voltages conditioning signal and multichannel current regulating signal.
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 tracking voltage source 117 high terminations, 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 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 link to each other, a plurality of working voltage source 116-11,116-12 ... 116-1n passes through a plurality of isolation network 116-110,116-120 respectively, 116-130...116-1n0 be connected in parallel, tracking voltage source 117 high-end power supplies are given in back in parallel.Digital signal processing unit 110 sends regulated voltage signal 210-11,210-12, ... 210-1n, pass through each isolation network 116-110 respectively, 116-120 ... 116-1n0 acts on working voltage source, make certain moment of determining by each working voltage source 116-11,116-12 ... among the 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.Corresponding one by one auxiliary voltage source and the current source separately of plurality of voltages conditioning signal that above digital signal processing unit 110 sends and multichannel current regulating signal.
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 control its switch conducting or shutoff.The regulated voltage signal 210 that digital signal processing unit 110 sends comes 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 first kind of structural representation of the working voltage source isolation network among the supply unit embodiment of the present invention.In this embodiment, digital signal processing unit 110 drives 116-1103 to 1161n03 by each respectively and connects corresponding each change-over switch 116-1101 to 1161n01 and each working voltage source 116-11 to 116-1n, and each change-over switch 116-1101 to 1161n01 connects corresponding isolating diode 116-1102 to 1161n02.
As shown in figure 26, be second kind of structural representation of the working voltage source isolation network among the supply unit embodiment of the present invention.Be that with the different of 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 the 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 the supply unit of the present invention.Only with a change-over switch 116-1101, a diode 116-1103 has just finished 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 assurance 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 the process flow diagram referring to shown in Figure 28 may further comprise the steps:
S281: signal generator sends input signal to tracking voltage source, and sends 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 is according to described current regulating signal output current and corresponding power, merges with the input signal of described amplification to obtain being used for the supply voltage of radio-frequency power amplifier and the power of supply.
In the step S281 of above-mentioned control method, also comprise: signal generator also sends first regulated voltage signal, controls first bias voltage that described working voltage source sends.
Also comprise: provide the auxiliary voltage source of second bias voltage and corresponding power to described tracking voltage source, described signal generator also sends second regulated voltage signal to described auxiliary voltage source and controls it and send 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 the various electronic equipments, as base station, transmitter, etc. less radio-frequency equipment, in the time of in being applied in base station equipment, the base station signal processing unit calculates the voltage signal of representing different transmission power in real time according to current load, and sends tracking signal, sends corresponding electric power by device of the present invention.The present invention is simple in structure, improved tracking accuracy, avoided the high frequency handoff loss.Can follow the tracks of the tracking signal that digital signal processing unit sends fast, produce corresponding electric power, improve the efficient 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 the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the memory storage and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
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 is used for providing first bias voltage and corresponding power to described tracking voltage source;
Described signal generator is used to send input signal to described tracking voltage source, and sends current regulating signal to described current source;
First bias voltage that provides according to described working voltage source is provided described tracking voltage source, amplifies described input signal;
Described current source is used for according to described current regulating signal output current and corresponding power;
Described electric current and corresponding power according to described input signal after the amplification of described tracking voltage source output and the output of described current source produce the supply voltage and the power that are used 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 also is used for sending first regulated voltage signal to described working voltage source;
Described working voltage source also is used for providing corresponding described first bias voltage according to described 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 is used to generate the tracking signal of digital form, described current regulating signal and described first regulated voltage signal;
The D/A modular converter is used for described tracking signal is converted to simulating signal;
The signal condition unit comprises amplifilter, is used for the described tracking signal of amplification filtering and obtains described input signal; Biasing circuit is used for providing voltage bias to described amplifilter.
4. device according to claim 1, it is characterized in that, also comprise: auxiliary voltage source, be used for second regulated voltage signal that sends according to described signal generator, output offers second bias voltage and the corresponding power of described tracking voltage source, and connect the output of described tracking voltage source by described current source, together export the output power that radio-frequency power amplifier is provided with described current source;
Described signal generator also is used to send described second regulated voltage signal.
5. device according to claim 4 is characterized in that described tracking voltage source also is used for the electric current with the output of described current source, and part returns to described current source.
6. device according to claim 4 is characterized in that, described tracking voltage source comprises:
The amplifying unit of a plurality of cascades is used for amplifying step by step described input signal, and the output terminal of the afterbody of described amplifying unit connects linear adjustable pipe;
Described linear regulation pipe is used for amplifying the described input signal that amplifies step by step under second bias voltage that first bias voltage that described working voltage source provides and described auxiliary voltage source provide, and obtains the described supply voltage that is used for radio-frequency power amplifier.
7. device according to claim 6 is characterized in that, described amplifying unit is linear amplification wave filter, exclusive disjunction amplifier.
8. device according to claim 6 is characterized in that, also comprises error amplifier, feedback circuit; Described feedback circuit is used to feed back described tracking voltage source output voltage to described error amplifier, and described error amplifier is used for the signal of described feedback and described input signal are compared, and the error signal that compares is sent to described amplifying unit.
9. device according to claim 8 is characterized in that, also comprises compensating circuit, is used to described feedback circuit, error amplifier, amplifying unit and linear amplification pipe that the compensation of signal is provided.
10. device according to claim 5 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, first digital signal processing unit;
Described first digital signal processing unit is used to each working voltage source to send corresponding first regulated voltage signal respectively;
Described buffer circuit is connected between each described working voltage source and the described tracking voltage source, be used 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 between the output of corresponding each described auxiliary voltage source and described tracking voltage source;
Described device also comprises second digital signal processing unit;
Described second digital signal processing unit is used to each auxiliary voltage source to send corresponding second regulated voltage signal respectively, for each current source sends corresponding current regulating signal.
11. device according to claim 10 is characterized in that, described buffer circuit comprises change-over switch, driving circuit, isolating diode;
Described driving circuit, be used to send the described change-over switch of control conducting or by control signal;
Described change-over switch is used under the triggering of described driving circuit conducting or ends;
Described isolating diode is connected with described change-over switch.
12. the control method based on the described device of 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 uses described working voltage source that first bias voltage and the described input signal of corresponding power amplification are 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 that obtains being used for radio-frequency power amplifier.
13. control method according to claim 12 is characterized in that, also comprises:
Signal generator also sends first regulated voltage signal, controls first bias voltage that described working voltage source sends;
Also comprise: provide the auxiliary voltage source of second bias voltage and corresponding power to described tracking voltage source, described signal generator also sends second regulated voltage signal to described auxiliary voltage source and controls it and send 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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| CN201010212102.1A CN101876834B (en) | 2010-06-23 | 2010-06-23 | Tracking power supply device and control method thereof |
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| WO2011160330A1 (en) | 2011-12-29 |
| CN101876834B (en) | 2014-03-12 |
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