CN104917472B - Power amplifier, power amplifier device and its wide-band matching method - Google Patents
Power amplifier, power amplifier device and its wide-band matching method Download PDFInfo
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- CN104917472B CN104917472B CN201410085924.6A CN201410085924A CN104917472B CN 104917472 B CN104917472 B CN 104917472B CN 201410085924 A CN201410085924 A CN 201410085924A CN 104917472 B CN104917472 B CN 104917472B
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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
-
- 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
-
- 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
-
- 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
Abstract
The present invention discloses a kind of power amplifier, power amplifier device and its wide-band matching method, the power amplifier includes power distributing unit, main amplifying unit, power combing unit and at least one auxiliary amplifying unit in parallel with main amplifying unit, input signal exports after power distributing unit is distributed respectively to main amplifying unit and auxiliary amplifying unit, if being exported after power combing unit synthesizes signal all the way again through main amplifying unit and the auxiliary amplified main line signal of amplifying unit, an impedance transformation line is in series between main amplifying unit and/or at least one auxiliary amplifying unit and power combing unit, it further include the phase compensation unit for being connected on main amplifying unit and/or at least one auxiliary amplifying unit branch road, phase compensation unit is identical as the phase characteristic of impedance transformation line, for offsetting impedance transformation line bring height frequency point phase Potential difference.The present invention improves output power and efficiency, extends the bandwidth of power amplifier, and structure very simple, cost is relatively low.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of power amplifiers, power amplifier device and its wide-band matching method.
Background technique
Currently, the performance height of base station products becomes the principal focal point competed in the industry with the increasingly fierceness of market competition.
The appearance of multimode integrated base station based on the unified platform makes the seamless fusion of multi-standard technical system, makes GSM, WCDMA, HSPA/
HSPA+ and LTE unifies base station and becomes a reality, and realizes base station and shares, both can solve the digital preservation problem of existing investment, helps
Operator can fall behind superseded 2G equipment to existing net and reversely be substituted and optimized to the following smooth evolution, save a large amount of
Cost.And important component of the power amplifier (abbreviation power amplifier) as base station, it is directly related to the matter of Base Transmitter signal
Amount and communication efficiency.Requirement of the multimode integration of base station to power amplifier becomes higher, the frequency range difference requirement of various standard signals
Power amplifier has very wide bandwidth, and therefore, broadband power amplifier becomes the hot spot studied 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 is formed by 2 to multiple power tubes, is divided into main power amplifier PA1 and auxiliary power amplifier PA2.Input signal is separated through electric bridge
It opens and is respectively fed to main power amplifier PA1 and auxiliary power amplifier PA2, it is amplified to synthesize again all the way.In order to compensate for 90 ° of phases of electric bridge bring
Potential difference needs 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 be aligned for some frequency point, and the phase of other frequency points just has a degree of deviation, for general
Logical narrowband power amplifier phase deviation influence be not it is obvious that but for broadband power amplifier, phase deviation be likely to be breached 10 ° it is even higher,
At this moment, phase deviation will cause large effect to power and loss of efficiency.
Summary of the invention
The main purpose of the present invention is to provide a kind of power amplifier, power amplifier device and its wide-band matching method, purports
In the bandwidth and efficiency for improving power amplifier.
In order to achieve the above object, the present invention proposes a kind of power amplifier, including power distributing unit, main amplifying unit,
Power combing unit and at least one auxiliary amplifying unit in parallel with the main amplifying unit, input signal is through power distribution
It is exported respectively after unit distribution to main amplifying unit and auxiliary amplifying unit, after main amplifying unit and auxiliary amplifying unit amplification
If main line signal exported after power combing unit synthesizes signal all the way again, the main amplifying unit and/or at least one
An impedance transformation line, the power amplifier further include: be connected on are in series between auxiliary amplifying unit and the power combing unit
The main amplifying unit and/or the phase compensation unit of at least one auxiliary amplifying unit branch road, the phase compensation unit
It is identical as the phase characteristic of the impedance transformation line, for offsetting the impedance transformation line bring height frequency point phase difference.
Preferably, between the input terminal of the main amplifying unit and the output end of the power distributing unit, the master is put
Between the output end of big unit and the power combing unit, it is described auxiliary amplifying unit input terminal and the power distribution list
Compensation is respectively connected between the output end of member and between the output end and the power combing unit of the auxiliary amplifying unit
Line.
Preferably, the power distributing unit includes electric bridge, and the input terminal of the electric bridge receives input signal, the electric bridge
Two-way output end respectively with main amplifying unit, auxiliary amplifying unit connect.
Preferably, the main amplifying unit includes main amplifier, and the auxiliary amplifying unit includes booster amplifier, described
Between the input terminal of main amplifier and the output end of the electric bridge, the output end of the main amplifier and the power combing unit
Between, between the input terminal of the booster amplifier and the output end of the electric bridge and the output end of the booster amplifier with
Compensating line is respectively connected between the power combing unit.
Preferably, the impedance transformation line is 1/4 wave microstrip line, and the 1/4 wave microstrip line is connected to the master and puts
Between big device and the power combing unit.
Preferably, the phase compensation unit is connected to the output end of the electric bridge and the input terminal of the booster amplifier
Between.
Preferably, the phase compensation unit includes main transmission line, shunt capacitance and bypass microstrip line, the main transmission line
One end connect with the output end of the electric bridge, the compensated line of the other end of the main transmission line is defeated with the booster amplifier
Enter end connection；One end of the shunt capacitance is connected on the main transmission line, the other end ground connection of the shunt capacitance；It is described
One end of bypass microstrip line is connected on the main transmission line, the other end ground connection or hanging of the bypass microstrip line.
Preferably, the phase compensation unit further includes phase compensation microstrip line, the phase compensation microstrip line with it is described
It is connected between the output end of the electric bridge and the input terminal of the booster amplifier after main transmission line series connection.
The present invention also proposes a kind of power amplifier device, including power amplifier as described above.
The present invention proposes a kind of wide-band matching method of power amplifier device as described above again, comprising:
If power distributing unit is exported respectively after input signal to be assigned as to the main line signal that phase difference is 90 ° to main amplification
Unit and auxiliary amplifying unit amplify；
If by impedance transformation line for main amplifying unit and 90 ° of phase differences of the auxiliary amplified main line signal of amplifying unit
Phase alignment is carried out, height frequency point phase difference is generated；
Pass through phase compensation unit offset height frequency point phase difference, wherein the phase characteristic of the phase compensation unit with
The phase characteristic of the impedance transformation line is identical；
If power combing unit exports after the main line signal for counteracting height frequency point phase difference is synthesized signal all the way.
A kind of power amplifier, power amplifier device and its wide-band matching method proposed by the present invention, by single in main amplification
One phase compensation unit identical with the phase characteristic of impedance transformation line of series connection in member and/or at least one auxiliary amplifying unit,
It offsets impedance transformation line bring height frequency point phase difference, the phase of the height frequency point in the entire frequency band of power amplifier is made all may be used
To realize phase alignment, reduce power loss, to improve output power and efficiency, extend the bandwidth of power amplifier,
And the structure very simple of the phase compensation unit, cost is relatively low.
Detailed description of the invention
Fig. 1 is the circuit diagram of existing tradition Doherty power amplifier；
Fig. 2 is the structural schematic diagram of one embodiment of power amplifier of the present invention；
Fig. 3 is the circuit diagram of one embodiment of power amplifier of the present invention.
In order to keep technical solution of the present invention clearer, clear, it is described in further detail below in conjunction with attached drawing.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of power amplifier, and referring to Fig. 2, which includes power distributing unit 1, main amplifying unit
2, power combing unit 4 and at least one auxiliary amplifying unit 3 in parallel with the main amplifying unit 2, input signal is through function
Rate allocation unit 1 exports after distributing respectively to main amplifying unit 2 and auxiliary amplifying unit 3, amplifies through main amplifying unit 2 and auxiliary
If the amplified main line signal of unit 3 exports after power combing unit 4 synthesizes signal all the way again, the main amplifying unit 2
And/or be in series with an impedance transformation line 5 between at least one auxiliary amplifying unit 3 and the power combing unit 4, in figure only with
Impedance transformation line 5, which is connected between main amplifying unit 2 and the power combing unit 4, to be illustrated, but to impedance transformation line 5 in circuit
In position without limit.
The power amplifier further include: be connected on the main amplifying unit 2 and/or at least one auxiliary 3 branch of amplifying unit
On phase compensation unit 6,3 roads of auxiliary amplifying unit are only connected on phase compensation unit 6 in figure and are illustrated, but to phase
The position of compensating unit 6 in circuit is without limiting.The phase compensation unit 6 and the phase of the impedance transformation line 5 are special
Property is identical, for offsetting the 5 bring height frequency point phase difference of impedance transformation line.The present embodiment passes through in main amplifying unit 2
And/or a phase compensation unit 6 identical with the phase characteristic of impedance transformation line 5 of connecting at least one auxiliary amplifying unit 3,
It offsets 5 bring height frequency point phase difference of impedance transformation line, makes the phase of the height frequency point in the entire frequency band of power amplifier all
Phase alignment may be implemented, reduce power loss, to improve output power and efficiency, extend the band of power amplifier
It is wide.
Referring to Fig. 3, Fig. 3 is the circuit diagram of one embodiment of power amplifier of the present invention；The input terminal of the main amplifying unit 2 with
Between the output end of the power distributing unit 1, between the output end and the power combing unit 4 of the main amplifying unit 2,
It is described auxiliary amplifying unit 3 input terminal and the power distributing unit 1 output end between and the auxiliary amplifying unit 3
Output end and the power combing unit 4 between be respectively connected with compensating line Offset.
Wherein, the power distributing unit 1 includes electric bridge, it should be noted that the electric bridge in the present embodiment can be
The electric bridge of 3dB, 5dB or other specifications, are not limited thereto, for ease of description, only electric for 3dB with the electric bridge in the present embodiment
It is illustrated for bridge.The input terminal of the 3dB electric bridge receives input signal, the two-way output end of the 3dB electric bridge respectively with
Main amplifying unit 2, auxiliary amplifying unit 3 connect.
The main amplifying unit 2 includes main amplifier PA3, and the auxiliary amplifying unit 3 includes booster amplifier PA4, institute
State between the input terminal of main amplifier PA3 and the output end of the 3dB electric bridge, the output end of the main amplifier PA3 with it is described
Between power combing unit 4, it is between the input terminal of the booster amplifier PA4 and the output end of the 3dB electric bridge and described
Compensating line Offset is respectively connected between the output end of booster amplifier PA4 and the power combing unit 4.
The impedance transformation line 5 is 1/4 wave microstrip line, and the 1/4 wave microstrip line is connected to the main amplifier PA3
Between the power combing unit 4.
The phase compensation unit 6 is connected to the output end of the 3dB electric bridge and the input terminal of the booster amplifier PA4
Between.The phase compensation unit 6 includes main transmission line 61, shunt capacitance 62 and bypass microstrip line 63, the main transmission line 61
One end connect with the output end of the 3dB electric bridge, the compensated line Offset of the other end of the main transmission line 61 with it is described auxiliary
The input terminal of amplifier PA4 is helped to connect；One end of the shunt capacitance 62 is connected on the main transmission line 61, the bypass electricity
Hold 62 other end ground connection；One end of the bypass microstrip line 63 is connected on the main transmission line 61, the bypass microstrip line
63 other end ground connection or hanging.
Input signal is respectively fed to main amplifier PA3 and booster amplifier PA4 after 3dB electric bridge separates, amplified
It synthesizes again all the way, the two paths of signals separated as a result, through 3dB electric bridge has 90 ° of phase differences, which is by 3dB electricity
Bridge bring is provided with 1/4 wave microstrip in the output of main amplifier PA3 in order to compensate for 90 ° of phase differences of 3dB electric bridge bring
Line carries out phase alignment.But since 1/4 wave microstrip line has frequency characteristic, can only be carried out pair for some frequency point
Together, and the phase of other frequency points just has a degree of deviation, in this way, compensating for 3dB electric bridge bring in 1/4 wave microstrip line
While 90 ° of phase differences, the problem of also bringing along height frequency point phase difference, in the present embodiment, in the output end of the 3dB electric bridge
Phase compensation unit 6 is set between the input terminal of the booster amplifier PA4, and the phase characteristic of the phase compensation unit 6 is bent
The phase characteristic curve slope of line slope and 1/4 wave microstrip line is identical, can by the phase error cancellation of height frequency point, thus
The phase of the center frequency point phase alignment namely all frequency points that guarantee the power amplifier is aligned.It specifically, can be by imitative
The Computer Aided Design of true software come be arranged main transmission line 61 in phase compensation unit 6, bypass microstrip line 63 size and bypass
The capacitance size of capacitor 62, thus by changing micro-strip size and capacitance come the phase compensation of adjustment phase place compensating unit 6
The phase characteristic of slope and port standing wave, the phase characteristic curve slope and 1/4 wave microstrip line that make the phase compensation unit 6 is bent
Line slope is identical.Wherein, the minimum dimension of main transmission line 61 is limited by 62 pad of shunt capacitance, and minimum cannot be less than bypass electricity
Hold 62 pads.The length and width of microstrip line 63, the value of 62 capacitor of shunt capacitance are bypassed to the slope characteristics and port standing wave shadow of phase
Sound is larger.
Further, if the slope characteristics of phase compensation unit 6 meet the requirements the phase characteristic i.e. with 1/4 wave microstrip line
The slope of curve is identical, but when the phase of center frequency point is closer to and is not zero, can increase in phase compensation unit 6 a bit of
Phase compensation microstrip line, the phase compensation microstrip line are connected to described after connecting with the main transmission line 61 in phase compensation unit 6
Between the output end of 3dB electric bridge and the input terminal of the booster amplifier PA4, to guarantee that center frequency point phase is zero, in this way, energy
While not changing the phase of center frequency point, the phase error of height frequency point is offset, reduces power loss, to improve
Output power and efficiency, and the structure very simple of the phase compensation unit 6, it is easy to accomplish, size is small, performance is excellent, reliable
Property it is high, productivity is good, effectively extend the bandwidth of power amplifier.
The present invention also proposes a kind of power amplifier device, which includes above-mentioned power amplifier, power amplifier electricity
The circuit structure and principle on road can refer to aforementioned, and details are not described herein.Due to using above-mentioned power amplifier, output work is improved
Rate and efficiency extend the bandwidth of power amplifier, are able to satisfy requirement of the base station to power amplifier device in practical application.
The present invention proposes a kind of wide-band matching method of above-mentioned power amplifier device again, this method comprises: first by power point
It is put if being assigned as being exported respectively after the main line signal that phase difference is 90 ° to main amplifying unit 2 and auxiliary by input signal with unit 1
Big unit 3 amplifies；If again by impedance transformation line 5 for main amplifying unit 2 and the auxiliary amplified main line of amplifying unit 3 letter
Number 90 ° of phase differences carry out phase alignment, generate height frequency point phase difference；Height frequency point phase is offset by phase compensation unit 6
Potential difference, wherein the phase characteristic of the phase compensation unit 6 is identical as the phase characteristic of the impedance transformation line 5；Finally, function
If rate synthesis unit 4 exports after the main line signal for counteracting height frequency point phase difference is synthesized signal all the way.Specifically, pass through
Phase compensation unit 6 was offset in the step of height frequency point phase difference, obtained the phase characteristic of the impedance transformation line 5 first；Again
The phase compensation list is arranged by simulation software in phase characteristic based on the 5 namely 1/4 wave microstrip line of impedance transformation line
The capacitance size of main transmission line 61, the size of bypass microstrip line 63 and shunt capacitance 62 in member 6, so that the phase compensation list
The phase characteristic of member 61 is identical as 1/4 wave microstrip line, offsets 1/4 wave microstrip line bring height frequency point phase difference, thus
Improve output power and efficiency.
Above-mentioned power amplifier, power amplifier device and its wide-band matching method, by main amplifying unit and/or at least one
One phase compensation unit identical with the phase characteristic of impedance transformation line of series connection on a auxiliary amplifying unit, to offset impedance transformation
Line bring height frequency point phase difference, makes the phase of the height frequency point in the entire frequency band of power amplifier that can realize phase pair
Together, reduce power loss, to improve output power and efficiency, extend the bandwidth of power amplifier, and the phase compensation
The structure very simple of unit, cost is relatively low.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations
Equivalent structure made by description of the invention and accompanying drawing content or process transformation, are applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of power amplifier, including power distributing unit, main amplifying unit, power combing unit and single with the main amplification
First at least one auxiliary amplifying unit in parallel, input signal export after power distributing unit is distributed respectively to main amplifying unit
And auxiliary amplifying unit, if being closed again through power combing unit through main amplifying unit and the auxiliary amplified main line signal of amplifying unit
As being exported after signal all the way, the main amplifying unit and/or at least one auxiliary amplifying unit and the power combing unit
Between be in series with an impedance transformation line, which is characterized in that the power amplifier further include: be connected on the main amplifying unit and/or
At least one auxiliary amplifying unit and power distributing unit branch road phase compensation unit, the phase compensation unit and
The phase characteristic of the impedance transformation line is identical, for offsetting the impedance transformation line bring height frequency point phase difference.
2. power amplifier according to claim 1, which is characterized in that the input terminal and the power of the main amplifying unit
Between the output end of allocation unit, between the output end of the main amplifying unit and the power combing unit, it is described auxiliary put
Between the input terminal of big unit and the output end of the power distributing unit and it is described auxiliary amplifying unit output end and institute
It states and is respectively connected with compensating line between power combing unit.
3. power amplifier according to claim 2, which is characterized in that the power distributing unit includes electric bridge, the electricity
The input terminal of bridge receives input signal, and the two-way output end of the electric bridge is connect with main amplifying unit, auxiliary amplifying unit respectively.
4. power amplifier according to claim 3, which is characterized in that the main amplifying unit includes main amplifier, described
Assisting amplifying unit includes booster amplifier, between the input terminal of the main amplifier and the output end of the electric bridge, the master
Between the output end of amplifier and the power combing unit, the output end of the input terminal of the booster amplifier and the electric bridge
Between and the output end and the power combing unit of the booster amplifier between be respectively connected with compensating line.
5. power amplifier according to claim 4, which is characterized in that the impedance transformation line is 1/4 wave microstrip line, institute
1/4 wave microstrip line is stated to be connected between the main amplifier and the power combing unit.
6. power amplifier according to claim 4 or 5, which is characterized in that the phase compensation unit is connected to the electricity
Between the output end of bridge and the input terminal of the booster amplifier.
7. power amplifier according to claim 6, which is characterized in that the phase compensation unit includes main transmission line, side
Road capacitor and bypass microstrip line, one end of the main transmission line connect with the output end of the electric bridge, the main transmission line it is another
The compensated line in one end is connect with the input terminal of the booster amplifier；One end of the shunt capacitance is connected to the main transmission line
On, the other end of the shunt capacitance is grounded；One end of the bypass microstrip line is connected on the main transmission line, the bypass
The other end ground connection or hanging of microstrip line.
8. power amplifier according to claim 7, which is characterized in that the phase compensation unit further includes that phase compensation is micro-
Band line, the phase compensation microstrip line is connected to the output end of the electric bridge after connecting with the main transmission line and the auxiliary is put
Between the input terminal of big device.
9. a kind of power amplifier device, which is characterized in that including power amplifier described in any one of claim 1 to 8.
10. a kind of wide-band matching method of power amplifier device as claimed in claim 9 characterized by comprising
If power distributing unit is exported respectively after input signal to be assigned as to the main line signal that phase difference is 90 ° to main amplifying unit
And auxiliary amplifying unit amplifies；
If for main amplifying unit and 90 ° of phase differences of the amplified main line signal of amplifying unit is assisted to carry out by impedance transformation line
Phase alignment generates height frequency point phase difference；
Pass through phase compensation unit offset height frequency point phase difference, wherein the phase characteristic of the phase compensation unit with it is described
The phase characteristic of impedance transformation line is identical；
If power combing unit exports after the main line signal for counteracting height frequency point phase difference is synthesized signal all the way.
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 CN104917472A (en) | 2015-09-16 |
| CN104917472B true 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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| Country | Link |
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| CN (1) | CN104917472B (en) |
| WO (1) | WO2015135267A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871341B (en) * | 2016-03-24 | 2018-09-28 | 重庆邮电大学 | The high linearity Doherty power amplifier realized using double negative ferroelectric materials |
| CN105958954B (en) * | 2016-04-05 | 2018-08-03 | 电子科技大学 | A kind of microwave passive synthesis amplification system and method |
| CN105915182B (en) * | 2016-04-11 | 2018-07-27 | 重庆邮电大学 | Post-distortion linearization Doherty power amplifier based on ferroelectric capacitor |
| CN105958947B (en) * | 2016-04-21 | 2018-11-06 | 重庆邮电大学 | Doherty power amplifier based on adjustable ferroelectricity power splitter |
| CN107332535B (en) * | 2017-06-26 | 2021-03-12 | 武汉凡谷电子技术股份有限公司 | Circuit device for adjusting microstrip line transmission phase |
| CN109905092B (en) * | 2017-12-11 | 2022-02-25 | 华为技术有限公司 | Power amplification 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 |
| 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 |
| CN113381708A (en) * | 2021-05-07 | 2021-09-10 | 宁波市芯能微电子科技有限公司 | Power amplifier |
| CN115776281A (en) * | 2021-09-06 | 2023-03-10 | 中兴通讯股份有限公司 | Power amplifier architecture and circuit board |
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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 |
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| US7248108B2 (en) * | 2004-12-29 | 2007-07-24 | Agere Systems Inc. | Power amplifier employing thin film ferroelectric phase shift element |
| JP4486620B2 (en) * | 2006-06-23 | 2010-06-23 | 株式会社エヌ・ティ・ティ・ドコモ | Multiband Doherty amplifier |
| EP2383883B1 (en) * | 2010-04-23 | 2013-07-17 | Nxp B.V. | Power amplifier |
| US8314654B2 (en) * | 2010-05-17 | 2012-11-20 | Alcatel Lucent | Multi-band high-efficiency Doherty amplifier |
| KR101170634B1 (en) * | 2010-11-25 | 2012-08-02 | 주식회사 에이스테크놀로지 | Multiband switching doherty amplifier |
| CN102170268A (en) * | 2011-04-29 | 2011-08-31 | 中兴通讯股份有限公司 | Power amplification device and power amplification circuit |
| CN102594265A (en) * | 2012-02-29 | 2012-07-18 | 中国科学院微电子研究所 | Electric adjusting Doherty power amplifier |
| US8981850B2 (en) * | 2012-08-02 | 2015-03-17 | Telefonaktiebolaget L M Ericsson (Publ) | Multi-frequency multi-standard reconfigurable doherty amplifier |
| CN103580611A (en) * | 2012-08-10 | 2014-02-12 | 中兴通讯股份有限公司 | Power amplification device and wireless 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015135267A1 (en) | 2015-09-17 |
| CN104917472A (en) | 2015-09-16 |
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