CN102075149B - Power envelope tracing power supply of multi-phase interleaving radio-frequency power amplifier - Google Patents
Power envelope tracing power supply of multi-phase interleaving radio-frequency power amplifier Download PDFInfo
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- CN102075149B CN102075149B CN2010105725269A CN201010572526A CN102075149B CN 102075149 B CN102075149 B CN 102075149B CN 2010105725269 A CN2010105725269 A CN 2010105725269A CN 201010572526 A CN201010572526 A CN 201010572526A CN 102075149 B CN102075149 B CN 102075149B
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Abstract
The invention relates to a power envelope tracing power supply of a multi-phase interleaving radio-frequency power amplifier, which comprises an envelope detection circuit for detecting a radio-frequency signal, a linear amplification circuit for amplifying an envelope signal, a multi-phase interleaving synchronous BUCK circuit for controlling a current which is supplied by the linear amplification circuit to the radio-frequency power amplifier, and a switch conversion control circuit for driving and controlling the interleaving synchronous BUCK circuit according to the current outputted by the linear amplification circuit, wherein the envelope detection circuit inputs an inputted radio-frequency signal to the linear amplification circuit to be linear amplified after detecting the radio-frequency signal, the switch conversion control circuit produces a multi-phase drive pulse to control the multi-phase interleaving synchronous BUCK circuit according to the current outputted by the linear amplification circuit, so the current which is supplied by the linear amplification circuit to the radio-frequency power amplifier is minimized.
Description
Technical field
The present invention relates to a kind of radio-frequency power amplifier power supply, relate in particular to a kind of multiphase interleaving radio-frequency power amplifier power envelope tracking power supply.
Background technology
High linear, high efficiency radio-frequency power amplifier (RadioFrequency Power Amplifier, radio-frequency power amplifier, abbreviation " RFPA ") is not only the 4th generation mobile communcations system (4G) and high definition television (High Definition Television, high definition television, be called for short " HDTV ") system used with OFDM (Orthogonal Frequency Division Modulation, OFDM, abbreviation " OFDM ") is the multi-carrier modulation technology of representative (Multi-Carrier Modulation, multi-carrier modulation, abbreviation " MCM ") one of key foundation device also is the domestic and international radio-frequency power amplifying technique target that ongoing effort is pursued over nearly 20 years.MCM requires higher carrier frequency, wider frequency band, and it also requires in high signal peak/average (PAR) situation simultaneously, and receiving/signaling still has the high linearity.At present, the main amplification of adopting Class-A or Class-AB class radio-frequency power amplifier to realize little distortion, high linearity both at home and abroad, but the efficiency power amplifier of Class-A class, Class-AB class formation is innately lower, the time distributed pole of wireless communication data amount is inhomogeneous in addition, under little load, to work when radio frequency amplifier is more, therefore, the actual efficiency of operation of radio-frequency power amplifier is very low, often is no more than 15%.This not only causes short, the long-term use problem of inconvenience of wireless terminal battery continued power time, also causes the RFPA heating of wireless communication base station serious, performance degradation, rapid wear, the problem such as volume is large, the base station power consumption is serious, operating cost is high.
Summary of the invention
The technical problem that the present invention solves is: make up a kind of multiphase interleaving radio-frequency power amplifier power envelope tracking power supply, overcome the low technical problem of radio-frequency power amplifier efficiency of operation in the prior art.
Technical scheme of the present invention is: make up a kind of multiphase interleaving radio-frequency power amplifier power envelope tracking power supply, comprise the envelope detection circuit that radiofrequency signal is carried out detection, the linear amplifier circuit that envelope signal is amplified, control described linear amplifier circuit and supply with the synchronous BUCK circuit of multiphase interleaving of radio-frequency power amplifier electric current, control the switch change-over control circuit of the synchronous BUCK circuit of described crisscross parallel according to the current drives of described linear amplifier circuit output, described envelope detection circuit carries out outputing to after the detection described linear amplifier circuit to the radiofrequency signal of input and carries out linearity amplification, described switch change-over control circuit is exported heterogeneous driving pulse according to the electric current of described linear amplifier circuit output and is controlled the synchronous BUCK circuit of described multiphase interleaving, so that the electric current of described linear amplifier circuit supply radio-frequency power amplifier is as far as possible little.
Further technical scheme of the present invention is: the synchronous BUCK circuit of described crisscross parallel comprises power semiconductor switch M
n, power semiconductor switch D
n, inductance L
n, described power semiconductor switch M
nSource electrode and described power semiconductor switch D
nDrain electrode connect power semiconductor switch M
nDrain electrode be connected power semiconductor switch M with input DC power line Vdd
nThe drive signal line of gate pole and switch change-over control circuit output be connected power semiconductor switch D
nSource electrode connect the 0V reference level, power semiconductor switch D
nThe drive signal line of gate pole and switch change-over control circuit output be connected inductance L
nConnect described power semiconductor switch M
nSource electrode and described power semiconductor switch D
nDrain electrode, wherein n is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel.
Further technical scheme of the present invention is: described linear amplifier circuit comprises operational amplification circuit A, power amplifier tube T1, power amplifier tube T2, feedback resistance RA1 and feedback resistance RA2, the gate pole of described operational amplification circuit A output termination power amplifier tube T1 and power amplifier tube T2, described power amplifier tube T1 is connected in series with power amplifier tube T2 is complementary, described feedback resistance RA1 and feedback resistance RA2 serial connection, feedback resistance RA1 also is connected with the negative input utmost point of operational amplification circuit A with the tie point of feedback resistance RA2.
Further technical scheme of the present invention is: described switch change-over control circuit each phase driving pulse in the heterogeneous driving pulse of the synchronous BUCK circuit of described multiphase interleaving output uses the method for stagger phase place or frequency to export control.
Further technical scheme of the present invention is: described switch change-over control circuit comprises linear amplifier A
n, hysteresis comparator P
n, resistance R
n, described linear amplifier A
nThe described hysteresis comparator P of output termination
nThe negative input utmost point, described resistance R
nTwo ends connect respectively described linear amplifier A
nThe positive input utmost point and the negative input utmost point, described each hysteresis comparator P
nThreshold values different, wherein n is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel.
Further technical scheme of the present invention is: described switch change-over control circuit comprises linear amplifier A
n, PID (Proportional-Integral-Derivative, proportion integration differentiation are called for short " PID ") adjuster PID
n, PWM comparator PWM
n, resistance R
n, described linear amplifier A
nThe described PID adjuster of output termination PID
nThe negative input utmost point, described PID adjuster PID
nThe described PWM comparator of output termination PWM
nThe negative input utmost point, described resistance R
nTwo ends connect respectively described linear amplifier A
nThe positive input utmost point and the negative input utmost point, wherein n is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel.
Further technical scheme of the present invention is: the synchronous BUCK circuit of described each staggered parallel connection adopts the triangular wave of steady job frequency, phase phasic difference 360 degree/N to carry out the generation of PWM control impuls.Wherein N is total number of phases of the synchronous BUCK circuit of crisscross parallel.
Further technical scheme of the present invention is: described a plurality of inductance L
nIntegrated inductor for discrete inductance or shared magnetic core.
Further technical scheme of the present invention is: described power semiconductor switch D
nBe in metal-oxide-semiconductor or the fast recovery diode any.
Further technical scheme of the present invention is: the synchronous BUCK circuit of described switch change-over control circuit and described crisscross parallel adopts the mode of isolation drive.
Technique effect of the present invention is: make up a kind of multiphase interleaving radio-frequency power amplifier power envelope tracking power supply, the present invention has used multiphase staggering synchronously BUCK circuit in parallel as the core topology of main power conversion, the operating frequency maximum of circuit is brought up to the N of phase synchronization BUCK circuit, and doubly (N is the number of phases, N 〉=2), reduced requirement to power device switching speed parameter.The present invention is according to envelope-tracking method (Envelope following/Envelope tracking), can realize according to its input radio frequency signal amplitude size Class-A, Class-AB class radio frequency amplifier, added supply power voltage amplitude on the dynamic adjustments power radio-frequency (RF) transistors, thereby greatly improve the efficient of RFPA operation, keep simultaneously high linear function.
Description of drawings
Fig. 1 is the principle assumption diagram of multiphase interleaving RFPA power envelope tracking power supply of the present invention.
Fig. 2 is a kind of execution mode circuit diagram of multiphase interleaving RFPA power envelope tracking power supply of the present invention.
Fig. 3 is the synchronous BUCK circuit structure diagram of multiphase interleaving of the present invention.
Fig. 4 is the another kind of execution mode circuit diagram of multiphase interleaving RFPA power envelope tracking power supply of the present invention.
Embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is further specified.
As shown in Figure 1, the specific embodiment of the present invention is: make up a kind of multiphase interleaving radio-frequency power amplifier power envelope tracking power supply, comprise the envelope detection circuit that radiofrequency signal is carried out detection, the linear amplifier circuit that envelope signal is amplified, control described linear amplifier circuit and supply with the synchronous BUCK circuit of multiphase interleaving of radio-frequency power amplifier electric current, control the switch change-over control circuit of the synchronous BUCK circuit of described crisscross parallel according to the current drives of described linear amplifier circuit output, described envelope detection circuit carries out being input to after the detection described linear amplifier circuit to the radiofrequency signal of input and carries out linearity amplification, described switch change-over control circuit is exported heterogeneous driving pulse according to the electric current of described linear amplifier circuit output and is controlled the synchronous BUCK circuit of described multiphase interleaving, so that the electric current of described linear amplifier circuit supply radio-frequency power amplifier is as far as possible little.In the specific embodiments of the invention, described switch change-over control circuit each phase driving pulse in the heterogeneous driving pulse of the synchronous BUCK circuit of described multiphase interleaving output uses the method for stagger phase place or frequency to export control.
In the specific embodiments of the invention, the synchronous BUCK circuit of described crisscross parallel comprises power semiconductor switch M
i, power semiconductor switch D
n, inductance L
n, described power semiconductor switch M
nSource electrode and described power semiconductor switch D
nDrain electrode connect power semiconductor switch M
nDrain electrode be connected power semiconductor switch M with input DC power line Vdd
nThe drive signal line of gate pole and switch change-over control circuit output be connected power semiconductor switch D
nSource electrode connect the 0V reference level, power semiconductor switch D
nThe drive signal line of gate pole and switch change-over control circuit output be connected inductance L
nConnect described power semiconductor switch M
nSource electrode and described power semiconductor switch D
nDrain electrode, wherein n is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel.In the specific embodiment, described a plurality of inductance L
nIntegrated inductor for discrete inductance or shared magnetic core; Described power semiconductor switch D
nBe in metal-oxide-semiconductor or the fast recovery diode any; The synchronous BUCK circuit of described switch change-over control circuit and described crisscross parallel adopts the mode of isolation drive.
In the specific embodiments of the invention, described linear amplifier circuit comprises operational amplification circuit A, power amplification utmost point T1, power amplification utmost point T2, feedback resistance RA1 and feedback resistance RA2, the gate pole of described operational amplification circuit A output termination power amplification utmost point T1 and power amplification utmost point T2, described feedback resistance RA1 and feedback resistance RA2 serial connection.
Specific implementation process is: the input radio frequency signal is at first by the envelope detector detection, and this envelope signal is namely controlled the voltage that the wide-band linearity amplifying circuit is exported dynamic change at a high speed, accurately subsequently, and this voltage is the RFPA required voltage.The switch change-over control circuit is according to the output current i of linear amplifier circuit
1, the driving pulse of the synchronous BUCK circuit of control crisscross parallel, the current i that linear amplifier circuit is supplied with to RFPA
1As much as possible little, even RFPA load current i
0Major part by the output current i of the synchronous BUCK switching circuit of multiphase interleaving
2Provide.The advantage that the high speed that so just combines In Linear Analog Circuits and the advantage of linearity and switch transformed circuit efficient are high, realized high-speed, the output of high efficiency, high-precision RFPA supply power voltage.
As shown in Figure 2, preferred implementation of the present invention is: described switch change-over control circuit comprises linear amplifier A
n, hysteresis comparator P
n, resistance R
n, described linear amplifier A
nThe described hysteresis comparator P of output termination
nThe negative input utmost point, described resistance R
nTwo ends connect respectively described linear amplifier A
nThe positive input utmost point and the negative input utmost point, described each hysteresis comparator P
nThreshold values different, wherein n is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel.
As shown in Figure 2, specific implementation process is: the input radio frequency signal produces the envelope signal that needs amplification by envelope detector D, this envelope signal is by linear amplifier A(Linear Amplifier) anode input, after linear power amplification, produce the needed voltage signal V of RFPA
OutBehind this Voltage-output, act on the upper load current i that forms of load RFPA
0Load current i
0Through current sampling resistor R
OutAfter, be exaggerated device A
OutTransformation of scale forms corresponding to i
0The voltage of/N electric current, this voltage are given N synchronous BUCK circuit then as reference instruction current signal, and wherein N is total number of phases of the synchronous BUCK circuit of crisscross parallel.。The actual output current of each phase BUCK forms corresponding this phase output current signal after also processing by sampling resistor and transformation of scale similarly.The reference instruction current signal compares through hysteresis comparator with the output current signal of every phase BUCK again, and what form the BUCK circuit opens, turn-offs control signal.This is opened, cut-off signals behind isolated drive circuit, give switching tube M and the D of BUCK, can regulate the electric current of inductance in the BUCK circuit, make it follow rapidly i
0/ N electric current.The stagnant ring threshold value of the hysteresis comparator by making each phase BUCK circuit is different, just can make the switching frequency of each phase different, thereby each alternate formation random phase is interlocked.Like this, N synchronised BUCK circuit has just reached the purpose of equivalent switching frequency multiplication, its whole output current i altogether
2Can follow rapidly i
0Change, and make the current i of linear amplifying element A output
1Greatly reduce, thereby realize the function of efficient, accurate RF envelope tracking power supply.The synchronous BUCK circuit structure diagram of multiphase interleaving as shown in Figure 3.
As shown in Figure 4, preferred implementation of the present invention is: described switch change-over control circuit comprises linear amplifier A
n, PID adjuster PID
n, PWM comparator PWM
n, resistance R
n, described linear amplifier A
nThe described PID adjuster of output termination PID
nThe negative input utmost point, described PID adjuster PID
nThe described PWM comparator of output termination PWM
nThe negative input utmost point, described resistance R
nTwo ends connect respectively described linear amplifier A
nThe positive input utmost point and the negative input utmost point, wherein n is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel.
As shown in Figure 4, the structure of this execution mode is identical with the main circuit structure of Fig. 2 execution mode, and difference only is that the structure of switch change-over control circuit is different.The specific works process is as follows: reference instruction current signal i
0The output current signal of/N and each phase BUCK circuit is regulated through PID first, forms error controling signal, this error controling signal again with the triangular signal of fixed frequency through the PWM comparator relatively, what form the BUCK circuit opens, turn-offs control signal.This is opened, switching tube M and the D of cut-off signals isolation drive BUCK, regulates the electric current of inductance, makes it follow rapidly i
0/ N electric current.Identical and the 360 °/N of phase phasic difference of triangular signal frequency by making each phase, it is staggered just can to make each form mutually equiphase.Like this, N synchronised BUCK circuit has just reached the purpose of N times of equivalent switching frequency altogether, its whole output current i
2Follow fast i
0Change, make linear amplifying element A output current i
1Greatly reduce, realize the function of efficient, accurate RF envelope tracking power supply.
The present invention compares with RFPA envelope-tracking power circuit in the past, adopted based on the multiphase staggering synchronously topology of BUCK circuit in parallel, under the limited condition of switch power device operating frequency, risen to single-phase N doubly with equivalent operating frequency is the highest, satisfy so high-power, high efficiency requirement, kept simultaneously two-forty, tracking performance accurately.
Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. multiphase interleaving radio-frequency power amplifier power envelope tracking power supply, it is characterized in that: comprise the envelope detection circuit that radiofrequency signal is carried out detection, the linear amplifier circuit that envelope signal is amplified, control described linear amplifier circuit and supply with the synchronous BUCK circuit of multiphase interleaving of radio-frequency power amplifier electric current, control the switch change-over control circuit of the synchronous BUCK circuit of described multiphase interleaving according to the current drives of described linear amplifier circuit output, described envelope detection circuit carries out being input to after the detection described linear amplifier circuit to the radiofrequency signal of input and carries out linearity amplification, the electric current that described switch change-over control circuit is exported according to described linear amplifier circuit produces heterogeneous driving pulse and controls the synchronous BUCK circuit of described multiphase interleaving, so that the electric current of described linear amplifier circuit supply radio-frequency power amplifier is as far as possible little;
The synchronous BUCK circuit of described multiphase interleaving is made of N synchronously BUCK circuit parallel connection, and wherein k synchronised BUCK circuit comprises power semiconductor switch M
k, power semiconductor switch D
k, inductance L
k, described power semiconductor switch M
kSource electrode and described power semiconductor switch D
kDrain electrode connect described power semiconductor switch M
kDrain electrode be connected described power semiconductor switch M with input direct-current Vdd
kGate pole be connected power semiconductor switch D with the k road drive signal line of described switch change-over control circuit output
kSource electrode connect the 0V reference level, described power semiconductor switch M
kGate pole through the series connection inverter and power semiconductor switch D
kGate pole connect described inductance L
kOne end connects described power semiconductor switch M
kSource electrode and power semiconductor switch D
kDrain electrode, the other end is through current sampling resistor R
kBe connected to the output of described linear amplifier circuit;
Described switch change-over control circuit is made of N the identical sub-control circuit of structure, and wherein k sub-control circuit comprises linear amplifier A
k, hysteresis comparator P
k, current sampling resistor R
k, described resistance R
kBe serially connected in the outputting inductance L of described k synchronised BUCK circuit
kAnd between the described linear amplifier circuit output, and described resistance R
kTwo ends also connect respectively described linear amplifier A
kThe positive input utmost point and the negative input utmost point, play the sampling action to described k synchronised BUCK circuit output current, described linear amplifier A
kOutput connect described hysteresis comparator P
kNegative input end, the output current signal of described multiphase interleaving structure radio frequency power amplifier envelope-tracking power supply adopts current sampling resistor R
OutWith linear amplifier A
OutThe mode of combination obtains described resistance R
OutTwo ends connect respectively linear amplifier A
OutThe positive input utmost point and the negative input utmost point, described resistance R
OutOutput current signal after the sampling is by described linear amplifier A
OutSend into described hysteresis comparator P after reducing N times
kPositive input terminal, the output current signal of k synchronised BUCK circuit is by described resistance R
kWith described linear amplifier A
kTransformation of scale obtains after processing, and the output current signal of described multiphase interleaving structure radio frequency power amplifier envelope-tracking power supply and the output current signal of described k synchronised BUCK circuit are again through described hysteresis comparator P
kCompare, what form k synchronised BUCK circuit opens, turn-offs control signal, and this opens, turn-offs control signal behind isolated drive circuit, gives described semiconductor switch M
kGate pole, and then regulate inductance L
kElectric current, the hysteresis comparator P of described each sub-control circuit
kThreshold value different, thereby it is staggered to form random phase between described each synchronised BUCK circuit; Wherein N is total number of phases of the synchronous BUCK circuit of described multiphase interleaving, and k is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel,
1≤k≤N。
2. multiphase interleaving radio-frequency power amplifier power envelope tracking power supply, it is characterized in that: comprise the envelope detection circuit that radiofrequency signal is carried out detection, the linear amplifier circuit that envelope signal is amplified, control described linear amplifier circuit and supply with the synchronous BUCK circuit of multiphase interleaving of radio-frequency power amplifier electric current, control the switch change-over control circuit of the synchronous BUCK circuit of described multiphase interleaving according to the current drives of described linear amplifier circuit output, described envelope detection circuit carries out being input to after the detection described linear amplifier circuit to the radiofrequency signal of input and carries out linearity amplification, the electric current that described switch change-over control circuit is exported according to described linear amplifier circuit produces heterogeneous driving pulse and controls the synchronous BUCK circuit of described multiphase interleaving, so that the electric current of described linear amplifier circuit supply radio-frequency power amplifier is as far as possible little;
The synchronous BUCK circuit of described multiphase interleaving is made of N synchronously BUCK circuit parallel connection, and wherein k synchronised BUCK circuit comprises power semiconductor switch M
k, power semiconductor switch D
k, inductance L
k, described power semiconductor switch M
kSource electrode and described power semiconductor switch D
kDrain electrode connect described power semiconductor switch M
kDrain electrode be connected described power semiconductor switch M with input direct-current Vdd
kGate pole be connected power semiconductor switch D with the k road drive signal line of described switch change-over control circuit output
kSource electrode connect the 0V reference level, described power semiconductor switch M
kGate pole through the series connection inverter and power semiconductor switch D
kGate pole connect described inductance L
kOne end connects described power semiconductor switch M
kSource electrode and power semiconductor switch D
kDrain electrode, the other end is through current sampling resistor R
kBe connected to the output of described linear amplifier circuit;
Described switch change-over control circuit is made of N the identical sub-control circuit of structure, and wherein k sub-control circuit comprises linear amplifier A
k, proportional integral derivative controller PID
k, PWM comparator PWM
k, current sampling resistor R
k, described resistance R
kBe serially connected in the outputting inductance L of described k synchronised BUCK circuit
kAnd between the described linear amplifier circuit output, and described resistance R
kTwo ends also connect respectively described linear amplifier A
kThe positive input utmost point and the negative input utmost point, play the sampling action to described k synchronised BUCK circuit output current, described linear amplifier A
kThe described proportional integral derivative controller PID of output termination
kThe negative input utmost point, the output current signal of described multiphase interleaving structure radio frequency power amplifier envelope-tracking power supply adopts output current sampling resistor R
OutWith linear amplifier A
OutThe mode of combination obtains described resistance R
OutTwo ends connect respectively linear amplifier A
OutThe positive input utmost point and the negative input utmost point, described resistance R
OutOutput current signal after the sampling is by described linear amplifier A
OutSend into described proportional integral derivative controller PID after reducing N times
kPositive input terminal, the output current signal of k synchronised BUCK circuit is by described resistance R
kWith described linear amplifier A
kTransformation of scale obtains after processing, and the output current signal of described multiphase interleaving structure radio frequency power amplifier envelope-tracking power supply and the output current signal of described k synchronised BUCK circuit pass through first described proportional integral derivative controller PID
kRegulate, form error controling signal, described proportional integral derivative controller PID
kThe described PWM comparator of output termination PWM
kThe negative input utmost point, described PWM comparator PWM
kPositive input termination triangular wave, described error controling signal and triangular signal are through PWM comparator PWM
kRelatively, what form described k synchronised BUCK circuit opens, turn-offs control signal, this is opened, cut-off signals behind isolated drive circuit, give described semiconductor switch M
kGate pole, thereby regulate inductance L
kElectric current, the identical and 360 °/N of phase phasic difference of the triangular signal frequency of described each synchronised BUCK circuit, thus form phase cross-over between described each synchronised BUCK circuit; Wherein N is total number of phases of the synchronous BUCK circuit of described multiphase interleaving, and k is the phase ordinal number of the synchronous BUCK circuit of crisscross parallel, 1≤k≤N.
3. multiphase interleaving radio-frequency power amplifier power envelope tracking power supply according to claim 1 and 2, it is characterized in that: described linear amplifier circuit comprises operational amplification circuit A, power amplifier tube T1, power amplifier tube T2, feedback resistance RA1 and feedback resistance RA2, described operational amplification circuit A positive input terminal connects the output of described envelope detection circuit, the gate pole of described operational amplification circuit A output termination power amplifier tube T1 and the gate pole of power amplifier tube T2, described power amplifier tube T1 is connected in series with power amplifier tube T2 is complementary, described power amplifier tube T1 source electrode and power amplifier tube T2 drain electrode links to each other and is connected to the output of the synchronous BUCK of described multiphase interleaving, described power amplifier tube T1 drain electrode connects input direct-current Vdd, described power amplifier tube T2 source electrode connects the 0V reference level, described feedback resistance RA1 and feedback resistance RA2 serial connection, feedback resistance RA1 is connected with the negative input utmost point of operational amplification circuit A with the tie point of feedback resistance RA2, the other end of feedback resistance RA1 is connected with the output of described linear amplifier circuit, and the other end of feedback resistance RA2 is connected with the 0V reference level.
4. multiphase interleaving radio-frequency power amplifier power envelope tracking power supply according to claim 1 and 2 is characterized in that: described power semiconductor switch D
kFor in metal-oxide-semiconductor or the fast recovery diode any.
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| CN2010105725269A CN102075149B (en) | 2010-12-03 | 2010-12-03 | Power envelope tracing power supply of multi-phase interleaving radio-frequency power amplifier |
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| CN2010105725269A CN102075149B (en) | 2010-12-03 | 2010-12-03 | Power envelope tracing power supply of multi-phase interleaving radio-frequency power amplifier |
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| CN102571131B (en) * | 2012-01-12 | 2017-02-15 | 中兴通讯股份有限公司 | Power supply device, method for managing power supply thereof and wireless communication terminal |
| KR102179318B1 (en) * | 2013-03-14 | 2020-11-16 | 퀀탄스, 인코포레이티드 | Et system with adjustment for noise |
| CN104300924B (en) * | 2014-10-17 | 2017-09-01 | 中国科学院微电子研究所 | A kind of envelope-tracking power supply and envelope-tracking radio-frequency power amplifier |
| CN106877841A (en) * | 2015-12-11 | 2017-06-20 | 中国航空工业集团公司雷华电子技术研究所 | A kind of multiple-pulse synthetic method in high-power RF power amplifier |
| CN106452369B (en) * | 2016-09-28 | 2020-03-17 | 西安交通大学 | Efficient envelope tracking power supply and method based on power amplifier output signal control |
| CN107196614A (en) * | 2017-05-22 | 2017-09-22 | 湖北凯乐科技股份有限公司 | Have Larger Dynamic output power range and efficient RF power amplification device concurrently |
| CN108768307B (en) * | 2018-04-24 | 2021-11-23 | 陕西亚成微电子股份有限公司 | Power supply supporting multiple modes and used for radio frequency power amplifier |
| CN108900165B (en) * | 2018-04-24 | 2022-01-21 | 陕西亚成微电子股份有限公司 | Power supply for radio frequency power amplifier |
| CN111030602B (en) * | 2019-11-11 | 2022-04-01 | 西安亚润微光电科技有限公司 | Power supply with expandable bandwidth for radio frequency power amplifier |
| CN111404580B (en) * | 2020-03-24 | 2021-05-04 | 中国矿业大学 | Power line power signal composite transmission system and transmission method |
| CN112187185A (en) * | 2020-10-19 | 2021-01-05 | 维沃移动通信有限公司 | Envelope tracking power supply circuit and electronic device |
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| US7301400B1 (en) * | 2004-06-02 | 2007-11-27 | Rf Micro Devices, Inc. | Multi-phase switching power supply for mobile telephone applications |
| US7157963B1 (en) * | 2004-07-08 | 2007-01-02 | Nortel Networks Limited | Methods and apparatus for controlling the output voltage of a switched-mode power supply |
| CN101350557B (en) * | 2007-07-18 | 2011-04-27 | 华为技术有限公司 | Apparatus for adjusting power supply |
| CN101378233A (en) * | 2007-08-31 | 2009-03-04 | 叶燕霞 | Power supply architecture capable of dynamic regulation in a wide region |
| CN101867284B (en) * | 2010-05-31 | 2012-11-21 | 华为技术有限公司 | Control method of fast tracking power supply, fast tracking power supply and system |
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