CN104917472A - Power amplifier circuit, power amplification device and broadband matching method of power amplification device - Google Patents
Power amplifier circuit, power amplification device and broadband matching method of power amplification device Download PDFInfo
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- CN104917472A CN104917472A CN201410085924.6A CN201410085924A CN104917472A CN 104917472 A CN104917472 A CN 104917472A CN 201410085924 A CN201410085924 A CN 201410085924A CN 104917472 A CN104917472 A CN 104917472A
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- 230000003321 amplification Effects 0.000 title abstract description 16
- 238000003199 nucleic acid amplification method Methods 0.000 title abstract description 16
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 6
- 230000009466 transformation Effects 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 3
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Classifications
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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
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
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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
- H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
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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
- H03F1/42—Modifications of amplifiers to extend the bandwidth
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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
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
-
- 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
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/36—Indexing scheme relating to amplifiers the amplifier comprising means for increasing the bandwidth
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/387—A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
Abstract
The invention discloses a power amplifier circuit, a power amplification device and a broadband matching method of the power amplification device. The power amplifier circuit comprises a power distribution unit, a main amplification unit, a power synthesis unit and at least one auxiliary amplification unit in parallel connection with the main amplification unit. An input signal is distributed by the power distribution unit; then distributed signals are output to the main amplification unit and the auxiliary amplification unit; after being amplified by the main amplification unit and the auxiliary amplification unit, a plurality of paths of signals are synthesized by the power synthesis unit into a path of signal so as to be output; and an impedance conversion line is connected in series between the main amplification unit and/or at least one auxiliary amplification unit and the power synthesis unit. The power amplifier circuit also comprises a phase compensation unit connected in series in the main amplification unit and/or at least one auxiliary amplification unit. The phase compensation unit having the same phase characteristic as that of the impedance conversion line is used for offsetting high and low frequency point phase difference brought by the impedance conversion line. The power amplifier circuit improves output power and efficiency, expands the bandwidth of the power amplifier circuit, has a very simple structure, and has low cost.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of power amplifier, power amplifier device and wide-band matching method thereof.
Background technology
At present, along with the fierceness day by day of market competition, the performance height of base station products becomes the principal focal point competed in the industry.Based on the appearance of the multimode integrated base station of the unified platform; make the seamless fusion of multi-modulation scheme technical system; make GSM, WCDMA, HSPA/HSPA+ and LTE unify base station to become a reality; achieve base station to share; the digital preservation problem of existing investment can be solved; help operator to following smooth evolution, can fall behind to existing network the 2G equipment eliminated again and oppositely substitute and optimize, save great amount of cost.And power amplifier (abbreviation power amplifier) is as the important component part of base station, direct relation quality and the communication efficiency of base station transmit signals.The multimode integration of base station becomes higher to the requirement of power amplifier, and the frequency range difference of various standard signal requires that power amplifier has very wide bandwidth, and therefore, broadband power amplifier becomes the focus of research at present.
Most widely used in existing base station power amplification is exactly Doherty(Doherty) power amplifier, as shown in Figure 1, traditional Doherty power amplifier forms to multiple power tube by 2, is divided into main power amplifier PA1 and auxiliary power amplifier PA2.Input signal is separated through electric bridge and is sent into main power amplifier PA1 and auxiliary power amplifier PA2 respectively, after amplifying, synthesize a road again.In order to 90 ° of phase differences that compensator bridge brings, need to carry out phase alignment by 1/4 wave microstrip line in the output of power amplifier.But because 1/4 wave microstrip line has frequency characteristic, can only align for some frequencies, and the phase place of other frequencies just has deviation to a certain degree, affecting for common arrowband power amplifier phase deviation is not clearly, but for broadband power amplifier, phase deviation may reach 10 ° even higher, and at this moment, phase deviation can cause larger impact to the loss of power efficiency.
Summary of the invention
Main purpose of the present invention is to provide a kind of power amplifier, power amplifier device and wide-band matching method thereof, is intended to the bandwidth and the efficiency that improve power amplifier.
In order to achieve the above object, the present invention proposes a kind of power amplifier, comprise power distributing unit, main amplifying unit, power combing unit and at least one auxiliary amplifying unit in parallel with described main amplifying unit, input signal exports main amplifying unit and auxiliary amplifying unit respectively to after power distributing unit is distributed, some roads signal after main amplifying unit and auxiliary amplifying unit amplify synthesizes after a road signal through power combing unit and exports, described main amplifying unit and/or be in series with an impedance transformation line between at least one auxiliary amplifying unit and described power combing unit, this power amplifier also comprises: be connected on the phase compensation unit on described main amplifying unit and/or at least one auxiliary amplifying unit branch road, described phase compensation unit is identical with the phase characteristic of described impedance transformation line, for offsetting the height frequency phase difference that described impedance transformation tape comes.
Preferably, between the input of described main amplifying unit and the output of described power distributing unit, between the output of described main amplifying unit and described power combing unit, all compensating wire is connected with between the input of described auxiliary amplifying unit and the output of described power distributing unit and between the output of described auxiliary amplifying unit and described power combing unit.
Preferably, described power distributing unit comprises electric bridge, and the input of described electric bridge receives input signal, and the two-way output of described electric bridge is connected with main amplifying unit, auxiliary amplifying unit respectively.
Preferably, described main amplifying unit comprises main amplifier, described auxiliary amplifying unit comprises booster amplifier, is all connected with compensating wire between the input of described main amplifier and the output of described electric bridge, between the output of described main amplifier and described power combing unit, between the input of described booster amplifier and the output of described electric bridge and between the output of described booster amplifier and described power combing unit.
Preferably, described impedance transformation line is 1/4 wave microstrip line, and described 1/4 wave microstrip line is connected between described main amplifier and described power combing unit.
Preferably, described phase compensation unit is connected between the output of described electric bridge and the input of described booster amplifier.
Preferably, described phase compensation unit comprises main transmission line, shunt capacitance and bypass microstrip line, and one end of described main transmission line is connected with the output of described electric bridge, and the other end of described main transmission line is connected through the input of compensating wire with described booster amplifier; One end of described shunt capacitance is connected on described main transmission line, the other end ground connection of described shunt capacitance; One end of described bypass microstrip line is connected on described main transmission line, the other end ground connection or unsettled of described bypass microstrip line.
Preferably, described phase compensation unit also comprises phase compensation microstrip line, and described phase compensation microstrip line is connected between the output of described electric bridge and the input of described booster amplifier after connecting with described main transmission line.
The present invention also proposes a kind of power amplifier device, comprises power amplifier as above.
The present invention proposes again a kind of wide-band matching method of power amplifier device as above, comprising:
It is export main amplifying unit respectively to after some roads signal of 90 ° and auxiliary amplifying unit amplifies that input signal is assigned as phase difference by power distributing unit;
90 ° of phase differences of the some roads signal after being amplified for main amplifying unit and auxiliary amplifying unit by impedance transformation line carry out phase alignment, produce height frequency phase difference;
Offset height frequency phase difference by phase compensation unit, wherein, the phase characteristic of described phase compensation unit is identical with the phase characteristic of described impedance transformation line;
The some roads signal syntheses counteracting height frequency phase difference is export after a road signal by power combing unit.
A kind of power amplifier that the present invention proposes, power amplifier device and wide-band matching method thereof, by a phase compensation unit identical with the phase characteristic of impedance transformation line of connecting on main amplifying unit and/or at least one auxiliary amplifying unit, offset the height frequency phase difference that impedance transformation tape comes, the phase place of the height frequency in the whole frequency band of power amplifier is made to realize phase alignment, decrease power loss, thus improve power output and efficiency, extend the bandwidth of power amplifier, and the structure of this phase compensation unit is very simple, cost is lower.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of existing traditional Doherty power amplifier;
Fig. 2 is the structural representation of power amplifier one embodiment of the present invention;
Fig. 3 is the circuit diagram of power amplifier one embodiment of the present invention.
In order to make technical scheme of the present invention clearly, understand, be described in further detail below in conjunction with accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of power amplifier, with reference to Fig. 2, this power amplifier comprises power distributing unit 1, main amplifying unit 2, power combing unit 4 and at least one auxiliary amplifying unit 3 in parallel with described main amplifying unit 2, input signal exports main amplifying unit 2 and auxiliary amplifying unit 3 respectively to after power distributing unit 1 is distributed, some roads signal after main amplifying unit 2 and auxiliary amplifying unit 3 amplify synthesizes after a road signal through power combing unit 4 and exports, described main amplifying unit 2 and/or be in series with an impedance transformation line 5 between at least one auxiliary amplifying unit 3 and described power combing unit 4, only be connected between main amplifying unit 2 and described power combing unit 4 with impedance transformation line 5 in figure and illustrate, but impedance transformation line 5 position is not in circuit limited.
This power amplifier also comprises: be connected on the phase compensation unit 6 on described main amplifying unit 2 and/or at least one auxiliary amplifying unit 3 branch road, only be connected on auxiliary amplifying unit 3 branch road with phase compensation unit 6 in figure and illustrate, but phase compensation unit 6 position is not in circuit limited.Described phase compensation unit 6 is identical with the phase characteristic of described impedance transformation line 5, for offsetting the height frequency phase difference that described impedance transformation line 5 brings.The present embodiment is by a phase compensation unit 6 identical with the phase characteristic of impedance transformation line 5 of connecting on main amplifying unit 2 and/or at least one auxiliary amplifying unit 3, offset the height frequency phase difference that impedance transformation line 5 brings, the phase place of the height frequency in the whole frequency band of power amplifier is made to realize phase alignment, decrease power loss, thus improve power output and efficiency, extend the bandwidth of power amplifier.
With reference to the circuit diagram that Fig. 3, Fig. 3 are power amplifier one embodiments of the present invention; Compensating wire Offset is all connected with between the input of described main amplifying unit 2 and the output of described power distributing unit 1, between the output of described main amplifying unit 2 and described power combing unit 4, between the input of described auxiliary amplifying unit 3 and the output of described power distributing unit 1 and between the output of described auxiliary amplifying unit 3 and described power combing unit 4.
Wherein, described power distributing unit 1 comprises electric bridge, it should be noted that, electric bridge in the present embodiment can be the electric bridge of 3dB, 5dB or other specifications, in this no limit, for convenience of explanation, in the present embodiment only for this electric bridge for 3dB electric bridge is described.The input of described 3dB electric bridge receives input signal, and the two-way output of described 3dB electric bridge is connected with main amplifying unit 2, auxiliary amplifying unit 3 respectively.
Described main amplifying unit 2 comprises main amplifier PA3, described auxiliary amplifying unit 3 comprises booster amplifier PA4, is all connected with compensating wire Offset between the input of described main amplifier PA3 and the output of described 3dB electric bridge, between the output of described main amplifier PA3 and described power combing unit 4, between the input of described booster amplifier PA4 and the output of described 3dB electric bridge and between the output of described booster amplifier PA4 and described power combing unit 4.
Described impedance transformation line 5 is 1/4 wave microstrip line, and described 1/4 wave microstrip line is connected between described main amplifier PA3 and described power combing unit 4.
Described phase compensation unit 6 is connected between the output of described 3dB electric bridge and the input of described booster amplifier PA4.Described phase compensation unit 6 comprises main transmission line 61, shunt capacitance 62 and bypass microstrip line 63, one end of described main transmission line 61 is connected with the output of described 3dB electric bridge, and the other end of described main transmission line 61 is connected with the input of described booster amplifier PA4 through compensating wire Offset; One end of described shunt capacitance 62 is connected on described main transmission line 61, the other end ground connection of described shunt capacitance 62; One end of described bypass microstrip line 63 is connected on described main transmission line 61, the other end ground connection or unsettled of described bypass microstrip line 63.
Input signal sends into main amplifier PA3 and booster amplifier PA4 respectively after 3dB electric bridge is separated, a road is synthesized again after amplifying, thus, the two paths of signals separated through 3dB electric bridge has 90 ° of phase differences, these 90 ° of phase differences are brought by 3dB electric bridge, in order to compensate 90 ° of phase differences that 3dB electric bridge brings, be provided with 1/4 wave microstrip line to carry out phase alignment in the output of main amplifier PA3.But because 1/4 wave microstrip line has frequency characteristic, can only align for some frequencies, and the phase place of other frequencies just has deviation to a certain degree, like this, while 1/4 wave microstrip line compensate for 90 ° of phase differences that 3dB electric bridge brings, also the problem of height frequency phase difference can be brought, in the present embodiment, between the output and the input of described booster amplifier PA4 of described 3dB electric bridge, phase compensation unit 6 is set, the phase characteristic curve slope of this phase compensation unit 6 is identical with the phase characteristic curve slope of 1/4 wave microstrip line, can by the phase error cancellation of height frequency, thus ensure the center frequency point phase alignment of this power amplifier, also namely the phase place of all frequencies is all alignd.Particularly, Computer Aided Design by simulation software arranges main transmission line 61 in phase compensation unit 6, the size of bypass microstrip line 63 and the capacitance size of shunt capacitance 62, thus phase compensation slope and the port standing wave of phase compensation unit 6 is adjusted by changing micro-band size and capacitance, make the phase characteristic curve slope of this phase compensation unit 6 identical with the phase characteristic curve slope of 1/4 wave microstrip line.Wherein, the minimum dimension of main transmission line 61, by the restriction of shunt capacitance 62 pad, minimumly can not be less than shunt capacitance 62 pad.The length and width of bypass microstrip line 63, the value of shunt capacitance 62 electric capacity affect larger on the slope characteristics of phase place and port standing wave.
Further, if the slope characteristics of phase compensation unit 6 meets the demands namely identical with the phase characteristic curve slope of 1/4 wave microstrip line, but the phase place of center frequency point comparatively close to and non-vanishing time, a bit of phase compensation microstrip line can be increased in phase compensation unit 6, this phase compensation microstrip line is connected to after connecting with the main transmission line 61 in phase compensation unit 6 between the output of described 3dB electric bridge and the input of described booster amplifier PA4, to ensure that center frequency point phase place is for zero, like this, can while the phase place not changing center frequency point, offset the phase error of height frequency, decrease power loss, thus improve power output and efficiency, and the structure of this phase compensation unit 6 is very simple, be easy to realize, its size is little, performance is excellent, reliability is high, productivity is good, effectively extend the bandwidth of power amplifier.
The present invention also proposes a kind of power amplifier device, and this power amplifier device comprises above-mentioned power amplifier, and the circuit structure of this power amplifier and principle can refer to aforementioned, do not repeat them here.Owing to have employed above-mentioned power amplifier, improve power output and efficiency, extend the bandwidth of power amplifier, base station to be met in practical application to the requirement of power amplifier device.
The present invention proposes again a kind of wide-band matching method of above-mentioned power amplifier device, and the method comprises: first input signal being assigned as phase difference by power distributing unit 1 is export main amplifying unit 2 respectively to after some roads signal of 90 ° and auxiliary amplifying unit 3 amplifies; 90 ° of phase differences of the some roads signal after being amplified for main amplifying unit 2 and auxiliary amplifying unit 3 by impedance transformation line 5 again carry out phase alignment, produce height frequency phase difference; Offset height frequency phase difference by phase compensation unit 6, wherein, the phase characteristic of described phase compensation unit 6 is identical with the phase characteristic of described impedance transformation line 5; Finally, the some roads signal syntheses counteracting height frequency phase difference is export after a road signal by power combing unit 4.Particularly, offset by phase compensation unit 6 in the step of height frequency phase difference, first obtain the phase characteristic of described impedance transformation line 5; Also the phase characteristic being 1/4 wave microstrip line based on described impedance transformation line 5 again arranges the size of main transmission line 61, bypass microstrip line 63 and the capacitance size of shunt capacitance 62 in described phase compensation unit 6 by simulation software, to make the phase characteristic of described phase compensation unit 61 identical with 1/4 wave microstrip line, offset the height frequency phase difference that 1/4 wave microstrip tape comes, thus improve power output and efficiency.
Above-mentioned power amplifier, power amplifier device and wide-band matching method thereof, by a phase compensation unit identical with the phase characteristic of impedance transformation line of connecting on main amplifying unit and/or at least one auxiliary amplifying unit, offset the height frequency phase difference that impedance transformation tape comes, the phase place of the height frequency in the whole frequency band of power amplifier is made to realize phase alignment, decrease power loss, thus improve power output and efficiency, extend the bandwidth of power amplifier, and the structure of this phase compensation unit is very simple, cost is lower.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a power amplifier, comprise power distributing unit, main amplifying unit, power combing unit and at least one auxiliary amplifying unit in parallel with described main amplifying unit, input signal exports main amplifying unit and auxiliary amplifying unit respectively to after power distributing unit is distributed, some roads signal after main amplifying unit and auxiliary amplifying unit amplify synthesizes after a road signal through power combing unit and exports, described main amplifying unit and/or be in series with an impedance transformation line between at least one auxiliary amplifying unit and described power combing unit, it is characterized in that, this power amplifier also comprises: be connected on the phase compensation unit on described main amplifying unit and/or at least one auxiliary amplifying unit branch road, described phase compensation unit is identical with the phase characteristic of described impedance transformation line, for offsetting the height frequency phase difference that described impedance transformation tape comes.
2. power amplifier according to claim 1, it is characterized in that, between the input of described main amplifying unit and the output of described power distributing unit, between the output of described main amplifying unit and described power combing unit, between the input of described auxiliary amplifying unit and the output of described power distributing unit and between the output of described auxiliary amplifying unit and described power combing unit, be all connected with compensating wire.
3. power amplifier according to claim 2, is characterized in that, described power distributing unit comprises electric bridge, and the input of described electric bridge receives input signal, and the two-way output of described electric bridge is connected with main amplifying unit, auxiliary amplifying unit respectively.
4. power amplifier according to claim 3, it is characterized in that, described main amplifying unit comprises main amplifier, described auxiliary amplifying unit comprises booster amplifier, is all connected with compensating wire between the input of described main amplifier and the output of described electric bridge, between the output of described main amplifier and described power combing unit, between the input of described booster amplifier and the output of described electric bridge and between the output of described booster amplifier and described power combing unit.
5. power amplifier according to claim 4, is characterized in that, described impedance transformation line is 1/4 wave microstrip line, and described 1/4 wave microstrip line is connected between described main amplifier and described power combing unit.
6. the power amplifier according to claim 4 or 5, is characterized in that, described phase compensation unit is connected between the output of described electric bridge and the input of described booster amplifier.
7. power amplifier according to claim 6, it is characterized in that, described phase compensation unit comprises main transmission line, shunt capacitance and bypass microstrip line, one end of described main transmission line is connected with the output of described electric bridge, and the other end of described main transmission line is connected through the input of compensating wire with described booster amplifier; One end of described shunt capacitance is connected on described main transmission line, the other end ground connection of described shunt capacitance; One end of described bypass microstrip line is connected on described main transmission line, the other end ground connection or unsettled of described bypass microstrip line.
8. power amplifier according to claim 7, it is characterized in that, described phase compensation unit also comprises phase compensation microstrip line, and described phase compensation microstrip line is connected between the output of described electric bridge and the input of described booster amplifier after connecting with described main transmission line.
9. a power amplifier device, is characterized in that, comprises the power amplifier in claim 1 to 8 described in any one.
10. a wide-band matching method for power amplifier device as claimed in claim 9, is characterized in that, comprising:
It is export main amplifying unit respectively to after some roads signal of 90 ° and auxiliary amplifying unit amplifies that input signal is assigned as phase difference by power distributing unit;
90 ° of phase differences of the some roads signal after being amplified for main amplifying unit and auxiliary amplifying unit by impedance transformation line carry out phase alignment, produce height frequency phase difference;
Offset height frequency phase difference by phase compensation unit, wherein, the phase characteristic of described phase compensation unit is identical with the phase characteristic of described impedance transformation line;
The some roads signal syntheses counteracting height frequency phase difference is export after a road signal by power combing unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085924.6A CN104917472B (en) | 2014-03-10 | 2014-03-10 | Power amplifier, power amplifier device and its wide-band matching method |
| PCT/CN2014/081879 WO2015135267A1 (en) | 2014-03-10 | 2014-07-09 | Power amplifier circuit, power amplifying apparatus, and broadband matching method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085924.6A CN104917472B (en) | 2014-03-10 | 2014-03-10 | Power amplifier, power amplifier device and its wide-band matching method |
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| Publication Number | Publication Date |
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| CN104917472A true CN104917472A (en) | 2015-09-16 |
| CN104917472B CN104917472B (en) | 2019-04-16 |
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| CN201410085924.6A Active CN104917472B (en) | 2014-03-10 | 2014-03-10 | Power amplifier, power amplifier device and its wide-band matching method |
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| CN (1) | CN104917472B (en) |
| WO (1) | WO2015135267A1 (en) |
Cited By (10)
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| CN105871341A (en) * | 2016-03-24 | 2016-08-17 | 重庆邮电大学 | High-linearity Doherty power amplifier implemented by double-negative ferroelectric material |
| CN105915182A (en) * | 2016-04-11 | 2016-08-31 | 重庆邮电大学 | Post-distortion linearized Doherty power amplifier based on ferroelectric capacitor |
| CN105958947A (en) * | 2016-04-21 | 2016-09-21 | 重庆邮电大学 | Doherty power amplifier based on adjustable ferroelectric power divider |
| CN107332535A (en) * | 2017-06-26 | 2017-11-07 | 武汉凡谷电子技术股份有限公司 | It is a kind of to be used to adjust the circuit arrangement that microstrip line transmits phase |
| CN105958954B (en) * | 2016-04-05 | 2018-08-03 | 电子科技大学 | A kind of microwave passive synthesis amplification system and method |
| CN109905092A (en) * | 2017-12-11 | 2019-06-18 | 华为技术有限公司 | A kind of power amplifier device and signal processing method |
| CN110808715A (en) * | 2019-09-25 | 2020-02-18 | 中科院微电子研究所昆山分所 | Doherty power amplifier with compensation function |
| CN113381708A (en) * | 2021-05-07 | 2021-09-10 | 宁波市芯能微电子科技有限公司 | Power amplifier |
| CN113541622A (en) * | 2020-04-15 | 2021-10-22 | 深圳市大富科技股份有限公司 | Power amplification circuit, 5G communication circuit and communication equipment |
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| CN102137518A (en) * | 2010-01-25 | 2011-07-27 | 上海华为技术有限公司 | Doherty power amplifier and multi-frequency band signal parameter adjusting device |
| CN102237852A (en) * | 2010-04-23 | 2011-11-09 | Nxp股份有限公司 | Power amplifier |
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