CN102594266A - Multi-stage multi-channel Doherty amplifier - Google Patents
Multi-stage multi-channel Doherty amplifier Download PDFInfo
- Publication number
- CN102594266A CN102594266A CN2012100579250A CN201210057925A CN102594266A CN 102594266 A CN102594266 A CN 102594266A CN 2012100579250 A CN2012100579250 A CN 2012100579250A CN 201210057925 A CN201210057925 A CN 201210057925A CN 102594266 A CN102594266 A CN 102594266A
- Authority
- CN
- China
- Prior art keywords
- amplifier
- power
- peak
- carrier
- network circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention provides a multi-stage multi-channel Doherty amplifier. The multi-stage multi-channel Doherty amplifier comprises a multi-channel power distribution network circuit, a carrier amplifier, at least two peak amplifiers, and an output power combining and impedance converting network circuit, wherein a drive amplifier is respectively connected in front of each carrier amplifier and peak amplifier in tandem; the input end of the drive amplifier is respectively connected with the multi-channel power distribution network circuit; the output ends of the carrier amplifier and the peak amplifiers are respectively connected with the output power combining and impedance converting network circuit; and the power of the first peak amplifier is 0.6 to 1.4 times that of the carrier amplifier, and the power of the other peak amplifiers is doubled stage by stage with a doubling coefficient of 1.5 to 2.6. The amplifier circuit adopting the amplifier provided by the invention not only has higher efficiency for high peak-to-average ratio signals, but also can realize higher gain.
Description
Technical field
The invention belongs to base station power amplifier technical field, be specifically related to a kind of multistage multichannel Doherty amplifier architecture that is used for multi-carrier base station system.
Background technology
Radio-frequency power amplifier is the critical component of wireless communication base station system, and the energy consumption major part of base station system is all by radio-frequency power amplifier consumption, and along with the attention of the mankind to environmental protection, wireless communication field requires increasingly high to the efficient of radio-frequency power amplifier.
The Doherty amplifier is in present wireless communication system, to use the most a kind of high efficiency technology; The principle of tradition Doherty amplifier circuit is shown in accompanying drawing 1; By input power splitter 1, carrier amplifier 3, peak amplifier 4. power synthetic/impedance transformer network circuit 5 forms, imports power splitter 1 and be connected with load 2.When small signal levels is imported; Peak amplifier 4 is in closed condition; The output of carrier amplifier 3 by power synthetic/impedance transformer network circuit 5 has been drawn to certain load, made carrier amplifier 3 be operated in the high efficiency state, along with the raising of incoming signal level; Peak amplifier 4 is opened by closed condition gradually; The output loading of carrier amplifier 3 and peak amplifier 4 changes along with the variation of power output, and when incoming signal level reached maximum, carrier amplifier 3 had all reached saturation condition and has been operated in the high efficiency state with peak amplifier 4.
Can reach best efficiency about 50% under the situation that present traditional single-stage Doherty amplifier circuit is 5～7dB in signal peak-to-average ratio; After being applied in the radio-frequency power amplifier complete machine, most effective also can only accomplishing about 43% is difficult to further improve; Gain simultaneously also can only be accomplished in the 20dB; Yet along with further developing of wireless broadband network, the bandwidth requirement of signal is more and more wideer, and signal peak-to-average ratio is also increasingly high; Require power amplification efficiency also increasingly high, also increasingly high to the gain requirement of Doherty circuit.Therefore how further effectively to improve the efficient of Doherty amplifier and the problem that is worth further investigation that gain is the radio-frequency power amplifier field.
Summary of the invention
The technical problem that the present invention will solve is: a kind of multistage multichannel Doherty amplifier is provided, under the situation of high peak-to-average force ratio rollback, can raises the efficiency and have higher gain.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be: a kind of multistage multichannel Doherty amplifier is characterized in that: it comprises multichannel power distributing network circuit, 1 carrier amplifier, at least 2 peak amplifiers, at least 3 driving amplifiers and power output is synthetic and the impedance transformer network circuit; 1 driving amplifier of connecting respectively before each carrier amplifier and the peak amplifier; The input of driving amplifier is connected with said multichannel power distributing network circuit respectively, and the output of carrier amplifier and peak amplifier is connected with the synthetic impedance transformer network circuit that reaches of said power output respectively.
Press such scheme; In said at least 2 peak amplifiers, the power of first peak amplifier is 0.6～1.4 times of power of said carrier amplifier, and the power of all the other peak amplifiers is double step by step; And double coefficient is 1.5～2.6, and the power that defines said carrier amplifier is P
c, the power of said peak amplifier is P step by step
P1, P
P2... P
P (n-1), P
Pn, P then
P1=(0.6～1.4) P
c, P
P2=(1.5～2.6) P
P1..., P
Pn=(1.5～2.6) P
P (n-1), wherein n is the peak amplifier number.
In said at least 3 driving amplifiers, the operating state of the driving amplifier that is connected with said carrier amplifier is the AB class, and the operating state of the driving amplifier that is connected with said peak amplifier is a kind of in AB class, category-B, BC class, the C class.
Press such scheme, said multichannel power distributing network circuit is made up of one or more elements in hybrid coupler, microstrip line power splitter, strip line power splitter, the coaxial cable power splitter, is used for input signal is distributed at least three road power.
Press such scheme; Synthetic and the impedance transformer network circuit of said power is made up of in the coupling of separate type, microstrip line, strip line, coaxial cable, the microwave capacitors one or more, exports after being used for all peak amplifiers and the radiofrequency signal of carrier amplifier output carried out that power is synthetic and reach impedance conversion.
Press such scheme; The phase-shifting amplitude-modulated lattice network of delaying time of connecting respectively one before described each carrier amplifier and the peak amplifier; Be used to introduce group delay, insert phase place and insert loss, make that group delay, insertion phase place and the gain parameter characteristic of amplification path in said working band is consistent.
Press such scheme, the phase-shifting amplitude-modulated lattice network of described time-delay comprises the element one of at least in microstrip line, strip line, surface mounted component, the coaxial cable.
Press such scheme, this amplifier can be made up of independent component, or adopts semiconductor fabrication process that many amplifier tube tube cores and corresponding auxiliary element are integrated in to constitute circuit of single-chip integrated in the single-chip.
Press such scheme, described driving amplifier is made up of an amplifier tube or a plurality of amplifier tube cascade.
Operation principle of the present invention is the asymmetrical topological structure that multistage multichannel has been adopted in the design of radio-frequency amplifier circuit.Signal at a high peak-to-average force ratio of input input; When input signal is average and the following signal of average; Peak amplifier is in closed condition; The output of carrier amplifier has been drawn to certain load by the synthetic impedance transformer network circuit that reaches of power, makes carrier amplifier be operated in the high efficiency state; Along with the raising of incoming signal level, peak amplifier is opened by closed condition gradually, and the output loading of carrier amplifier and peak amplifier changes along with the variation of power output; When incoming signal level reaches peak-peak; The carrier amplifier peak amplifier has all reached saturation condition and has been operated in the high efficiency state; Simultaneously introduced driving amplifier, improved the Doherty Amplifier Gain in the front of carrier amplifier and peak amplifier.
Beneficial effect of the present invention is:
Under the GSM multi-carrier signal situation of output 7dB peak-to-average force ratio, efficient can reach more than 52% when 1, experiment showed, two-stage three road Doherty amplifier circuit rollback 7dB that adopt this multistage multichannel Doherty amplifier realization, and gain can reach more than the 25dB.Along with the increase of peak value number of links, then can satisfy higher peak-to-average force ratio requirement.
2, the design has higher efficient through having adopted the Doherty topological structure of multistage multichannel under the high peak-to-average force ratio RST of amplification, can reach better linearity when cooperating DPD (digital pre-distortion) compensating circuit that adds; Can accomplish simultaneously lower cost and reliable operation, stable again.
3,, each introduces a phase-shifting amplitude-modulated lattice network of simple time-delay before amplifying the path respectively; Offset and different amplify group delay between the path, insert parameter differences such as phase place, gain; Make to amplify the group delay of path in said working band, to insert parameter attributes such as phase place, gain consistent; Reach maximum thereby the power that makes the output radiofrequency signal is synthetic, so promptly can reach higher efficient, also can satisfy the demand of high peak-to-average force ratio.
Description of drawings
Fig. 1 is the schematic block circuit diagram of traditional Doherty amplifier.
Fig. 2 is the schematic block circuit diagram of one embodiment of the invention.
The instance that Fig. 3 uses for one embodiment of the invention.
Fig. 4 is the schematic block circuit diagram of further embodiment of this invention.
Embodiment
For the object of the invention, technical scheme, operation principle and advantage can more clearly be understood, can combine accompanying drawing that the present invention is carried out detailed explanation below.
Embodiment one:
Fig. 2 is the schematic block circuit diagram of one embodiment of the invention, and it comprises multichannel power distributing network circuit, 1 carrier amplifier C1, at least 2 peak amplifier P1-Pn, at least 3 driving amplifier D1-D
N+1, and power output is synthetic and the impedance transformer network circuit; 1 driving amplifier of all connecting before each carrier amplifier and the peak amplifier; The input of driving amplifier is connected with said multichannel power distributing network circuit respectively, and the output of carrier amplifier and peak amplifier is connected with the synthetic impedance transformer network circuit that reaches of said power output respectively.
In said at least 2 peak amplifiers, the power of first peak amplifier is 0.6～1.4 times of power of said carrier amplifier, and the power of all the other peak amplifiers is double step by step, and double coefficient is 1.5～2.6, and the power that defines said carrier amplifier is P
c, the power of said peak amplifier is P step by step
P1, P
P2... P
P (n-1), P
Pn, P then
P1=(0.6～1.4) P
c, P
P2=(1.5～2.6) P
P1..., P
Pn=(1.5～2.6) P
P (n-1), wherein n is the peak amplifier number.Certainly, double coefficient can just not reach so good effect yet outside this scope.
In said at least 3 driving amplifiers, the operating state of the driving amplifier that is connected with said carrier amplifier is the AB class, and the operating state of the driving amplifier that is connected with said peak amplifier is a kind of in AB class, category-B, BC class, the C class.
Can form by an amplifier tube or a plurality of amplifier tube cascade for any one in the said driving amplifier.
Multichannel power distributing network circuit carries out the multichannel power division with input signal; Synthetic and the impedance transformer network circuit of power carries out the radiofrequency signal of all amplifier circuits outputs to export after the synthetic and impedance conversion of power.This multistage multichannel Doherty amplifier architecture has adopted the peak amplifier of aforementioned proportion, both can satisfy the requirement of high signal peak-to-average ratio, can reach very high efficient again.Wherein select suitable peak amplifier according to double coefficient.
Wherein, said multichannel power distributing network circuit can be made up of one or more elements in hybrid coupler, microstrip line power splitter, strip line power splitter, the coaxial cable power splitter, and it realizes the signal allocation of input is become at least three road power.
Wherein, the synthetic and impedance transformer network circuit of said power can be made up of in the coupling of separate type, microstrip line, strip line, the coaxial cable, in the element such as microwave capacitors one or more, realizes the road of closing to multiple signals.
The instance that Fig. 3 uses for one embodiment of the invention, present embodiment is selected 2 peak amplifier P1 and P2 for use.
Wherein, multichannel power distributing network circuit comprises first coupler 101, second coupler 103, first absorbing load 102, second absorbing load 104.The isolated port of first coupler 101 connects said first absorbing load, 102 back ground connection through microstrip line;-90 ° of ports of first coupler 101 connect the input of second coupler 103 through microstrip line; The isolated port of second coupler 103 connects second absorbing load, 104 back ground connection through microstrip line;-90 ° of output ports of second coupler 103 are connected with the input that carrier wave amplifies the driving amplifier D1 of link through microstrip line; 0 ° of output port of second coupler 103 is connected with the input of the driving amplifier D2 on the first peak value amplifier chain road through microstrip line; 0 ° of output port of first coupler 101 is connected with the input port that second peak value amplifies the driving amplifier D3 of link through microstrip line.The function of multichannel power distributing network circuit is to carry out one the tunnel to divide three tunnel power division, and first coupler 101 can be selected general three-dB coupler or 5dB coupler, and second coupler 104 can be selected general three-dB coupler or 5dB coupler.Wherein, it is unrestricted that said carrier amplifier, the said first peak value amplifier chain road and said second peak value amplify the position of link, can be according to actual needs reversing of position arbitrarily, as long as the guaranteed output ratio.
The output of the synthetic and impedance transformer network circuit of power and carrier amplifier C1 and peak amplifier P1, P2 is coupled; The output signal of amplifier circuit is carried out the synthetic and laggard line output of impedance conversion of power in inside, carrier amplifier and peak amplifier are operated in the working band.Synthetic and the impedance transformer network circuit of said power comprises first microstrip line 201, second microstrip line 202, the 3rd microstrip line 203, the 4th microstrip line 204; The output of first peak amplifier links to each other with first microstrip line 201; The output of carrier amplifier links to each other with second microstrip line 202; The output of second peak amplifier links to each other with the 3rd microstrip line 203.The characteristic impedance of first microstrip line 201, second microstrip line 202, the 3rd microstrip line 203, the 4th microstrip line 204 is a value between 10 Ω to 200 Ω; And the impedance of first, second, third and fourth microstrip line is not necessarily identical, and its electrical length also is not necessarily identical.
Signal at a high peak-to-average force ratio of input input; When input signal is average and the following signal of average; First peak amplifier and second peak amplifier are in closed condition; The output of carrier amplifier has been drawn to certain load by synthetic the 4th microstrip line 204 and second microstrip line 202 that reaches in the impedance transformer network circuit of power, makes carrier amplifier be operated in the high efficiency state; Along with the raising of incoming signal level, first peak amplifier and second peak amplifier are opened by closed condition gradually, and the output loading of carrier amplifier and peak amplifier changes along with the variation of power output; When incoming signal level reached peak-peak, carrier amplifier, first peak amplifier and second peak amplifier had all reached saturation condition and have been operated in the high efficiency state.
This amplifier can be formed by connecting each device, also can be an integrated circuit that adopts semiconductor fabrication process to process.
Embodiment two:
Present embodiment is as shown in Figure 4; Structure, principle and embodiment one are basic identical; Its difference is: the phase-shifting amplitude-modulated lattice network of delaying time of before each driving amplifier, connecting respectively; Be used to introduce group delay, insert phase place and insert loss, make that group delay, insertion phase place and the gain parameter characteristic of amplification path in said working band is consistent.The phase-shifting amplitude-modulated lattice network of delaying time comprises the element one of at least in microstrip line, strip line, surface mounted component, the coaxial cable.
The phase-shifting amplitude-modulated lattice network of delaying time is introduced time-delay, inserts phase place, is inserted parameter attributes such as loss or gain; With said driving amplifier, carrier amplifier and peak amplifier combination carrying out work; Cooperate said power distributing network circuit, the synthetic impedance variations lattice network that reaches of power again; Make that the parameter attributes such as time delay, insertion phase place, insertion loss or gain of a plurality of amplifications path in said working band are consistent, thereby make the synthetic maximum that reaches of power of multiple signals.So promptly can reach higher efficient, also can satisfy the demand of high peak-to-average force ratio.
Above-mentioned be merely the preferable concrete implementation of the present invention for example; Protection scope of the present invention is not limited to described embodiment here; In the technical scope that any basic fundamental personnel that are familiar with this area disclose based on the present invention; The replacement that can expect easily or modification all should be included within the appended claims institute restricted portion.
Claims (8)
1. multistage multichannel Doherty amplifier is characterized in that: it comprises multichannel power distributing network circuit, 1 carrier amplifier, at least 2 peak amplifiers, at least 3 driving amplifiers and power output is synthetic and the impedance transformer network circuit; 1 driving amplifier of connecting respectively before each carrier amplifier and the peak amplifier; The input of driving amplifier is connected with said multichannel power distributing network circuit respectively, and the output of carrier amplifier and peak amplifier is connected with the synthetic impedance transformer network circuit that reaches of said power output respectively.
2. multistage multichannel Doherty amplifier according to claim 1; It is characterized in that: in said at least 2 peak amplifiers; The power of first peak amplifier is 0.6～1.4 times of power of said carrier amplifier; The power of all the other peak amplifiers is double step by step, and double coefficient is 1.5～2.6, and the power that defines said carrier amplifier is P
c, the power of said peak amplifier is P step by step
P1, P
P2P
P (n-1), P
Pn, P then
P1=(0.6～1.4) P
c, P
P2=(1.5～2.6) P
P1..., P
Pn=(1.5～2.6) P
P (n-1), wherein n is the peak amplifier number.
3. multistage multichannel Doherty amplifier according to claim 1; It is characterized in that: said multichannel power distributing network circuit is made up of one or more elements in hybrid coupler, microstrip line power splitter, strip line power splitter, the coaxial cable power splitter, is used for input signal is distributed at least three road power.
4. multistage multichannel Doherty amplifier according to claim 1; It is characterized in that: the synthetic and impedance transformer network circuit of said power is made up of in the coupling of separate type, microstrip line, strip line, coaxial cable, the microwave capacitors one or more, exports after being used for all peak amplifiers and the radiofrequency signal of carrier amplifier output carried out that power is synthetic and reach impedance conversion.
5. according to any described multistage multichannel Doherty amplifier in the claim 1 to 4; It is characterized in that: the phase-shifting amplitude-modulated lattice network of delaying time of connecting respectively before described each carrier amplifier and the peak amplifier; Be used to introduce group delay, insert phase place and insert loss, make that group delay, insertion phase place and the gain parameter characteristic of amplification path in said working band is consistent.
6. multistage multichannel Doherty amplifier according to claim 5 is characterized in that: the phase-shifting amplitude-modulated lattice network of described time-delay comprises the element one of at least in microstrip line, strip line, surface mounted component, the coaxial cable.
7. according to any described multistage multichannel Doherty amplifier in the claim 1 to 4; It is characterized in that: this amplifier can be made up of independent component, or adopts semiconductor fabrication process that many amplifier tube tube cores and corresponding auxiliary element are integrated in to constitute circuit of single-chip integrated in the single-chip.
8. according to any described multistage multichannel Doherty amplifier in the claim 1 to 4, it is characterized in that: described driving amplifier is made up of an amplifier tube or a plurality of amplifier tube cascade.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100579250A CN102594266A (en) | 2012-03-07 | 2012-03-07 | Multi-stage multi-channel Doherty amplifier |
| PCT/CN2012/073564 WO2013131302A1 (en) | 2012-03-07 | 2012-04-06 | Multi-stage multi-path doherty amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100579250A CN102594266A (en) | 2012-03-07 | 2012-03-07 | Multi-stage multi-channel Doherty amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102594266A true CN102594266A (en) | 2012-07-18 |
Family
ID=46482545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100579250A Pending CN102594266A (en) | 2012-03-07 | 2012-03-07 | Multi-stage multi-channel Doherty amplifier |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102594266A (en) |
| WO (1) | WO2013131302A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580623A (en) * | 2012-08-10 | 2014-02-12 | 中兴通讯股份有限公司 | Radiofrequency power amplifier device and radiofrequency power amplifying method |
| WO2014044189A1 (en) * | 2012-09-18 | 2014-03-27 | 中兴通讯股份有限公司 | Doherty power amplification circuit |
| EP3145078A1 (en) * | 2014-05-28 | 2017-03-22 | Huawei Technologies Co., Ltd. | Doherty power amplifier and transmitter |
| CN108923758A (en) * | 2018-06-08 | 2018-11-30 | 广州慧智微电子有限公司 | A kind of radio-frequency power amplifying method, amplifier and electronic equipment |
| CN109660214A (en) * | 2018-12-20 | 2019-04-19 | 佛山臻智微芯科技有限公司 | One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier |
| CN114430884A (en) * | 2019-10-02 | 2022-05-03 | 三菱电机株式会社 | Doherty amplifier |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120318A (en) * | 2018-11-07 | 2019-01-01 | 上海创远仪器技术股份有限公司 | The circuit structure of local oscillator driving function is realized based on extensive MIMO technique |
| CN115441899B (en) * | 2018-12-14 | 2024-08-16 | 北京三星通信技术研究有限公司 | Delay network, analog elimination module comprising delay network and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001095480A1 (en) * | 2000-06-06 | 2001-12-13 | Telefonaktiebolaget Lm Ericsson | Composite amplifier |
| CN101567665A (en) * | 2008-12-26 | 2009-10-28 | 芯通科技（成都）有限公司 | Digital Doherty power amplifier |
| CN202014226U (en) * | 2011-02-25 | 2011-10-19 | 武汉正维电子技术有限公司 | High efficiency three-circuit Doherty amplifier |
| CN202535310U (en) * | 2012-03-07 | 2012-11-14 | 武汉正维电子技术有限公司 | Multistep multi-way Doherty amplifier |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100578922C (en) * | 2007-12-17 | 2010-01-06 | 华为技术有限公司 | High efficiency power amplifier |
| CN101783652A (en) * | 2010-01-18 | 2010-07-21 | 顾晓龙 | Easy realized multi-stage Doherty power amplifier |
| CN102185563B (en) * | 2011-04-29 | 2016-03-02 | 中兴通讯股份有限公司 | A kind of Doherty power amplification device |
| CN102355198B (en) * | 2011-08-01 | 2013-11-27 | 深圳大学 | Multi-path asymmetrical Doherty power amplifier |
-
2012
- 2012-03-07 CN CN2012100579250A patent/CN102594266A/en active Pending
- 2012-04-06 WO PCT/CN2012/073564 patent/WO2013131302A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001095480A1 (en) * | 2000-06-06 | 2001-12-13 | Telefonaktiebolaget Lm Ericsson | Composite amplifier |
| CN101567665A (en) * | 2008-12-26 | 2009-10-28 | 芯通科技（成都）有限公司 | Digital Doherty power amplifier |
| CN202014226U (en) * | 2011-02-25 | 2011-10-19 | 武汉正维电子技术有限公司 | High efficiency three-circuit Doherty amplifier |
| CN202535310U (en) * | 2012-03-07 | 2012-11-14 | 武汉正维电子技术有限公司 | Multistep multi-way Doherty amplifier |
Non-Patent Citations (1)
| Title |
|---|
| 向永波等: "线性Doherty功放的优化设计", 《微波学报》, vol. 26, no. 1, 28 February 2010 (2010-02-28), pages 72 - 75 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580623A (en) * | 2012-08-10 | 2014-02-12 | 中兴通讯股份有限公司 | Radiofrequency power amplifier device and radiofrequency power amplifying method |
| WO2014044189A1 (en) * | 2012-09-18 | 2014-03-27 | 中兴通讯股份有限公司 | Doherty power amplification circuit |
| US9531325B2 (en) | 2012-09-18 | 2016-12-27 | Zte Corporation | Doherty power amplifier circuit |
| EP3145078A1 (en) * | 2014-05-28 | 2017-03-22 | Huawei Technologies Co., Ltd. | Doherty power amplifier and transmitter |
| EP3145078A4 (en) * | 2014-05-28 | 2017-05-10 | Huawei Technologies Co., Ltd. | Doherty power amplifier and transmitter |
| US10084413B2 (en) | 2014-05-28 | 2018-09-25 | Huawei Technologies Co., Ltd. | Doherty power amplifier and transmitter |
| CN108923758A (en) * | 2018-06-08 | 2018-11-30 | 广州慧智微电子有限公司 | A kind of radio-frequency power amplifying method, amplifier and electronic equipment |
| CN109660214A (en) * | 2018-12-20 | 2019-04-19 | 佛山臻智微芯科技有限公司 | One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier |
| CN114430884A (en) * | 2019-10-02 | 2022-05-03 | 三菱电机株式会社 | Doherty amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013131302A1 (en) | 2013-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102545788A (en) | Multi-way asymmetrical Doherty amplifier | |
| CN102986134B (en) | A kind of many Hulls carry Doherty power amplifier and signal processing method | |
| CN102594266A (en) | Multi-stage multi-channel Doherty amplifier | |
| CN106411267B (en) | A kind of three tunnel Doherty power amplifier of broadband and its implementation | |
| CN106411275B (en) | Improve the three tunnel Doherty power amplifiers and implementation method of bandwidth | |
| CN106537769A (en) | Systems and methods related to linear and efficient broadband power amplifiers | |
| CN202424626U (en) | Multichannel asymmetric Doherty amplifier | |
| CN103199798B (en) | A kind of Doherty amplifying circuit and power amplifier | |
| CN101106358A (en) | Linear RF power amplifier circuit and its optimization method | |
| CN107508560B (en) | Doherty power amplifier for enhancing bandwidth performance and implementation method thereof | |
| WO2017036093A1 (en) | Multipath doherty amplifier | |
| CN102394569A (en) | Efficient Doherty power amplifier | |
| CN101567665A (en) | Digital Doherty power amplifier | |
| CN106374860A (en) | Doherty power amplifier based on voltage synthesis structure | |
| CN109660212A (en) | A kind of 3 tunnel Doherty power amplifiers for expanding bandwidth using reactance compensation | |
| CN202535310U (en) | Multistep multi-way Doherty amplifier | |
| CN101834571A (en) | Efficient linear power amplifier circuit | |
| CN109951160A (en) | Doherty power amplifier based on transformer | |
| CN104393843A (en) | Doherty power amplifier adopting multistage auxiliary circuit amplifier | |
| WO2015135283A1 (en) | Three-circuit inverted doherty power amplifier and implementation method | |
| CN203151433U (en) | Double-frequency synchronous power amplifier based on T-type network and coupling line | |
| CN207399144U (en) | A kind of broadband Doherty power amplifier | |
| CN105308857B (en) | Doherty power amplifier and transmitter | |
| CN103219948B (en) | There is the high efficiency power amplifier of error signal compensation function | |
| CN108599727B (en) | High-efficiency broadband Doherty power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |