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CN109660214A - One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier - Google Patents

One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier Download PDF

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Publication number
CN109660214A
CN109660214A CN201811565758.4A CN201811565758A CN109660214A CN 109660214 A CN109660214 A CN 109660214A CN 201811565758 A CN201811565758 A CN 201811565758A CN 109660214 A CN109660214 A CN 109660214A
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CN
China
Prior art keywords
power
unit
signal
way
peak
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
Application number
CN201811565758.4A
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Chinese (zh)
Inventor
周正轩
章国豪
刘祖华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Zhenzhiweixin Technology Co Ltd
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Foshan Zhenzhiweixin Technology Co Ltd
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Priority to CN201811565758.4A priority Critical patent/CN109660214A/en
Publication of CN109660214A publication Critical patent/CN109660214A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0288Modifications 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32Modifications of amplifiers to reduce non-linear distortion
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56Modifications of input or output impedances, not otherwise provided for
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/195High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/213Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/451Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)

Abstract

One kind being applied to the 5th big device of third-generation mobile communication base station Doherty function, it can be applied to the RF front-end power amplifier that base station uses, the big device of radio frequency Doherty function includes No. four power divider units, main radio-frequency power amplifier unit, peak RF power radiofrequency power amplification unit, output end Power Combiner Unit, signal output end matching unit.No. four power divider units are connect with signal generator, input terminal port Impedance is 50 ohm, two-way power distribution is first carried out to the radiofrequency signal of input, after two-way power distribution, upper signal all the way is being allocated secondary using two two-way power distributing units, such purpose be make all the way radiofrequency signal by continuous power distribution twice four road signals are assigned as by signal all the way.The main radiofrequency power amplification unit includes signal link unit all the way, is connected with the output signal all the way of No. four power divider units, to amplified signal in output to Power Combiner Unit.

Description

One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier
Technical field
The present invention relates to base station radio-frequency power amplifications in radio-frequency power amplifier field more particularly to the 5th third-generation mobile communication Device.
Background technique
Current wireless communication technique comes into the rear 4G epoch, and 4G technical application range is general wide, technology maturation.But with The rapid development of society, the demand of people further increase, to network speed and network quality also it is further proposed that new requirement. 2017 year end 3GPP establish first the 5th generation communication standard, and further excitation has the national capital deepening investment of research and development strength The research and development of 5th generation communication system.The realization of 5th generation communication needs adaptable chip and does carrier, and radio-frequency front-end is it in weight Weight, the high-quality colleges and universities of state's class and scientific research institutions and strong radio frequency producer propose to be applicable to the 5th Dai Tongxin in succession instantly Framework, it is already possible to solve the problems, such as some, but there are also most of problems effectively to be solved.The communication of 5th generation needs More high linearity and higher communication efficiency, the communication of the 5th generation have been done in terms of modulation very big with 3G the and 4G communication technology before It improves, power problems are easier to increase.It is all to be worked in traditional modulation system in a manner of constant enveloped modulation, signal peak-to-average ratio Smaller, can use nonlinear power amplifier progress power amplification can obtain preferable working efficiency, but the 5th generation is logical The high peak-to-average power ratio technology that letter technology uses, is easy to make distorted signals, have more in signal output end using nonlinear amplification technology Signal noise can severe jamming adjacent channel communication, the especially base station power amplifier of base station end proposes design Harsher requirement.Traditional base station power amplifier into the communication of the 5th generation for that can be such that power consumption becomes more Greatly, it is therefore desirable to traditional base station end-fire frequency power architecture be improved to adapt to the standard requirement of the 5th generation communication.Traditional Base station power amplifier can amplify radiofrequency signal using a way RF power framework or 2 way RF power frameworks, imitate Rate is relatively low, also weaker to the impedance traction of load, and also relatively low in back-off point efficiency, volume is also larger, constrains It is applied in communication later.
Summary of the invention
The embodiment of the present invention proposes a kind of applied to the 5th third-generation mobile communication base station Doherty function to solve the above-mentioned problems Big device, to solve high frequency millimeter wave frequency section radio-frequency power amplifier power efficiency, the linearity, some column problems such as harmonics restraint, It is easily installed and large-scale production.
The embodiment of the invention provides one kind to be applied to the 5th big device of third-generation mobile communication base station Doherty function, can be applied to The RF front-end power amplifier that base station uses, the big device of radio frequency Doherty function include No. four power divider units, master Radio-frequency power amplifier unit, peak RF power radiofrequency power amplification unit, output end Power Combiner Unit, signal output Hold matching unit.No. four power divider units are connect with signal generator, and input terminal port Impedance is 50 ohm, right The radiofrequency signal of input first carries out two-way power distribution, after two-way power distribution, is using two two-way power distributing units Upper signal all the way is allocated secondary, such purpose be make all the way radiofrequency signal by continuous power distribution twice by Signal is assigned as four road signals all the way.The main radiofrequency power amplification unit includes signal link unit all the way, with four Lu Gong The output signal all the way of rate dispenser unit is connected, to amplified signal in output to Power Combiner Unit.Described Peak power amplifier includes 3 road signal paths, the input terminal of peak power amplifier and No. four power divider lists The output end of member is connected, remaining 3 No. four power divider lists after being particularly connected to main power amplifier connection First output port, carries out power amplification to the peak RF signal of input, is that power closes to amplified signal output port Generator unit link.The input terminal of the Power Combiner Unit connects the output port and peak work of main power amplification unit The output port of the output port of rate device unit, Power Combiner Unit connects power match unit loads network.The function Power combing unit all the way in the connection of rate output matching network unit, carrying out being matched to load to the signal after synthesis makes power Efficiency maximizes.
Further, the device area of the main Power Amplifier Unit and the peak power device unit is different The size dimension of sample.The work of the main power amplifier is in AB class operating mode.
Further, the main power amplifier and peak power amplifier use GaAs PHEMT power.
Further, the main Power Amplifier Unit includes input signal matching unit, exports matching unit.Adopt input Matching is matched with lumped parameter original part, and matched framework is the matching of π type frame structure, and the output matching unit uses T row The output build-out resistor of main power amplifier list is matched to 50 ohm by distribution structure.
Further, the peak power amplifier unit is made of three tunnel peak power amplifier units, includes peak value Power amplifier 1, peak power amplifier 2, peak power amplifier 3.Three tunnel peak power amplifier in parallel and four road power The output signal link connection of distributor.The output of peak power amplifier is also the framework and power combing of parallel link connection The connection of device unit.The operating point of peak power amplifier 1 is arranged in B class operating mode, and the operating point of peak power amplifier 2 is set It sets in C class operating mode, the operating point of peak power amplifier 2 is arranged in C class operating mode.
Further, the peak power amplifier unit includes input signal matching unit, exports matching unit.It adopts defeated Enter matching to be matched with lumped parameter original part, matched framework is the matching of π type frame structure, and the output matching unit uses T row The output build-out resistor of peak power amplifier list is matched to 50 ohm by mating structure.
Further, the peak power amplifier is that parallel circuit is connect with the connection type of the main power amplifier Mode, input terminal are connected to the output end of No. four power dividers, and output end parallel link is connected to Power Combiner Unit Input port.
Further, the power combing unit connects structure by the impedance converter unit of a quarter of four 50 ohm of routings At the output port output impedance of difference tractive load impedance modulation to radio-frequency power amplifier.
Further, the effect of the main power radio-frequency power amplifier is to play to put to the amplification of small-power input signal Big effect is not reaching main power signal output packet with before, and all auxiliary power amplifiers are at by state, defeated Enter during signal enhancing as main power device reaches saturation state, the 1 start-up operation work of peak power amplifier, peak value is put Big device 2, peak amplifier 3 are in by state.As input signal is further reinforced, amplification input signal may participate in work Radio-frequency power amplifier have main power amplifier, auxiliary power amplifier 1, auxiliary power amplifier 2, however bearing power is put Big device 3 is in and cannot work by state.When the sufficiently large energy comparison of the signal swing of input is more, booster amplifier 3 Just start normal work.Each amplifier can be linear amplification input signal.
It is provided by the invention a kind of applied to the 5th big device of third-generation mobile communication base station Doherty function, it is small in size to be convenient for scale Production is able to satisfy the demand of the 5th third-generation mobile communication, and a wide range of in back-off is able to maintain higher communication efficiency in the process, There is the preferable linearity.
Detailed description of the invention
The advantages of in order to clearly illustrate the Technical Architecture of the invention implemented, make the embodiment of the present invention, convenience What feature became will more clearly be described with reference to the drawings.Obvious the embodiment described is a part of example example of the present invention, without It is whole examples.The embodiment of offer is in order to which the principle of the invention and actual application is explained further, to make ability Domain device others skilled in the art understand the content of present invention, and all other implementation obtained without creative efforts Example shall fall within the protection scope of the present invention.
Fig. 1, which is that the present invention is a kind of, is applied to the 5th big device structure chart of third-generation mobile communication base station Doherty function.
Fig. 2, which is that the present invention is a kind of, is applied to the 5th big implement body circuit diagram of third-generation mobile communication base station Doherty function.
Specific embodiment
Hereinafter reference will be made to the drawings carrys out detailed description of the present invention embodiment.The present invention however many different modes can be used Realize example of the present invention, the other embodiments of the present invention that obtain under the premise of other technologies engineering staff is in no creative work It shall fall within the protection scope of the present invention.
The present invention is a kind of referring to Fig.1 is applied to the 5th big device structure chart of third-generation mobile communication base station Doherty function.Include four tunnels Power divider 1, main power amplifier 2, peak power power amplifier 3, peak power power amplifier 4, peak power function Rate amplifier 5, power combiner 6, load unit 7.The effect of the main power radio-frequency power amplifier 2 is inputted to small-power Amplification is played the role of in the amplification of signal, is not reaching main power signal output packet with before, all auxiliary power amplifiers are all It is in by state, as main power device reaches saturation state during input signal enhancing, peak power amplifier 3 is opened Beginning efforts, peak amplifier 4, peak amplifier 5 are in by state.As input signal is further reinforced, amplification The radio-frequency power amplifier that input signal may participate in work has main power amplifier, auxiliary power amplifier 3, auxiliary power amplification Device 4, however bearing power amplifier 5 be in cannot work by state.When the signal swing of input is sufficiently large, energy comparison is more When, booster amplifier 5 just starts normally to work.Each amplifier can be linear amplification input signal.Four road power Distributor 1 is allocated to input signal, and the output signal distributed is distributed to power amplification unit, power combiner 6 The output signal of main power amplifier 2, peak power amplifier 3, peak power amplifier 4, peak power amplifier 5 is carried out Synthesis, load unit 7 play the role of to the signal of synthesizer it is matched, power signal transmissions to antenna end.
Fig. 2 one kind is please referred to applied to the 5th big implement body circuit diagram of third-generation mobile communication base station Doherty radio frequency function.Such as figure Shown in 2, the base station terminal includes a base station antenna system, and the antenna system is amplified comprising four road Doherty radio-frequency powers Device, power divider 201 and load 208.Input terminal No. four power divider 201 and the letter of the big device of Doherty radio frequency function The connection of number generator, for receiving the radiofrequency signal modulated, 201 No. four power dividers are to signal progress even power The signal distributed, is distributed to main Power Amplifier Unit 202, peak amplifier unit 203, peak amplifier unit by distribution 204, peak amplifier unit 205.By 202 main power radio-frequency units and 203 peak power units in 206 power combing units Power combing is carried out, the synthesis unit of peak amplifier unit 204 and 206 carries out power signal under the action of synthesis unit 207 Synthesis, peak amplifier unit 205 and synthesis unit 207 power combing again on load unit 208.
The main Power Amplifier Unit 202 of the Doheerty includes 2021 power amplification units and 2022 a quarters 50 Ohm radio frequency matched line unit.The output port of No. four power dividers in 2021 first connections all the way, signal enter in 2021, Radiofrequency signal is amplified by 2021 effect and is connected in series with 2022 a quarter, 50 Ohm radio frequency matched line unit, is played Load impedance modulates matched effect, and 2021 are designed using the PHEMT structure of GaAs technology, fully considers output power and face Long-pending size is matched to most suitable state.2022 can optimize domain structure, and minimizing the area of Unit 2022 can be right Load generates modulating action.
The main Power Amplifier Unit 203 of the Doheerty includes 2031 power amplification units and 2032 a quarters 50 Ohm radio frequency matched line unit.The output port of No. four power dividers in 2031 first connections all the way, signal enter in 2031, Radiofrequency signal is amplified by 2031 effect and is connected in series with 2032 a quarter, 50 Ohm radio frequency matched line unit, is played Load impedance modulates matched effect, and 2031 are designed using the PHEMT structure of GaAs technology, fully considers output power and face Long-pending size is matched to most suitable state.2032 can optimize domain structure, and minimizing the area of Unit 2032 can be right Load generates modulating action.
The main Power Amplifier Unit 204 of the Doheerty includes 2041 power amplification units and 2042 a quarters 50 Ohm radio frequency matched line unit.The output port of No. four power dividers in 2041 first connections all the way, signal enter in 2041, Radiofrequency signal is amplified by 2041 effect and is connected in series with 2042 a quarter, 50 Ohm radio frequency matched line unit, is played Load impedance modulates matched effect, and 2041 are designed using the PHEMT structure of GaAs technology, fully considers output power and face Long-pending size is matched to most suitable state.2042 can optimize domain structure, and minimizing the area of Unit 2042 can be right Load generates modulating action.
The main Power Amplifier Unit 205 of the Doheerty includes 2051 power amplification units and 2052 a quarters 50 Ohm radio frequency matched line unit.The output port of No. four power dividers in 2021 first connections all the way, signal enter in 2051, Radiofrequency signal is amplified by 2051 effect and is connected in series with 2052 a quarter, 50 Ohm radio frequency matched line unit, is played Load impedance modulates matched effect, and 2051 are designed using the PHEMT structure of GaAs technology, fully considers output power and face Long-pending size is matched to most suitable state.2052 can optimize domain structure, and minimizing the area of Unit 2052 can be right Load generates modulating action.
The composition of 2021 radio-frequency power amplifier includes input matching circuit and output matching circuit, is communicated in 5G low Under power signal, work in AB class state.The composition of 2031 radio-frequency power amplifier includes input matching circuit and output Match circuit works in 5G communication under power signal in B class state.The composition of 2041 radio-frequency power amplifier includes Input matching circuit and output matching circuit work in the case where 5G communicates high power signals in C class state.The 2041 radio frequency function The composition of rate amplifier includes input matching circuit and output matching circuit, in the case where 5G communicates high power signals, is worked in C class shape State.

Claims (7)

1. one kind is applied to the 5th big device of third-generation mobile communication base station Doherty function, which is characterized in that the big device of radio frequency Doherty function It is closed comprising No. four power divider units, main radio-frequency power amplifier unit, peak RF power amplifying unit, output end power Generator unit, signal output end matching unit are according to claim 1 a kind of to be applied the 5th third-generation mobile communication 28GHz's GaAs radio-frequency power amplifier, which is characterized in that the input matching network and inter-stage matching network use T-type mating structure.
2. No. four power divider unit according to claim 1, which is characterized in that the power divider cascades two-stage Two-way power divider.
3. main radio-frequency power amplifier unit according to claim 1, which is characterized in that the main radio-frequency power amplifier Unit is made of input matching circuit and output matching circuit, and output end cascades 50 ohm characteristic impedance of a quarter matching electricity Road.
4. peak RF power amplifying unit according to claim 1, which is characterized in that the peak RF power amplification Unit includes input matching circuit and output matching circuit, and unit output impedance is matched to 50 ohm.
5. peak RF power amplifying unit according to claim 4, which is characterized in that the peak RF power unit Comprising 3 parallel peak power amplifiers, the working condition of unlatching is not identical.
6. the output end Power Combiner Unit told according to claim 1, which is characterized in that the output end power combiner Unit individually synthesizes power signal all the way.
7. the signal output end matching unit told according to claim 1, which is characterized in that the signal output end matching unit Matched load is at maximum power impedance.
CN201811565758.4A 2018-12-20 2018-12-20 One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier Pending CN109660214A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111934633A (en) * 2020-09-27 2020-11-13 成都嘉纳海威科技有限责任公司 High-power gain high-back-off efficiency power amplifier

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1623277A (en) * 2002-01-28 2005-06-01 克里微波公司 N-way RF power amplifier circuit with increased back-off capability and power added efficiency
CN102594266A (en) * 2012-03-07 2012-07-18 武汉正维电子技术有限公司 Multi-stage multi-channel Doherty amplifier
CN203039643U (en) * 2012-12-29 2013-07-03 福州大学 Four-stage double-balanced power amplifier
CN103534935A (en) * 2013-06-07 2014-01-22 华为技术有限公司 Doherty power amplifier circuit, signal processing circuit and a multi-band base station
CN105846784A (en) * 2016-03-21 2016-08-10 天津大学 Design method for GaN HEMT multistage radio frequency power amplifier and amplifier
CN106411267A (en) * 2016-10-12 2017-02-15 杭州电子科技大学 Novel broadband three-path Doherty power amplifier and implementation method thereof
CN206620209U (en) * 2017-04-18 2017-11-07 深圳国人通信股份有限公司 A kind of high-power amplifying device
US20180152149A1 (en) * 2016-11-30 2018-05-31 Sumitomo Electric Device Innovations, Inc. Doherty amplifier

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1623277A (en) * 2002-01-28 2005-06-01 克里微波公司 N-way RF power amplifier circuit with increased back-off capability and power added efficiency
CN102594266A (en) * 2012-03-07 2012-07-18 武汉正维电子技术有限公司 Multi-stage multi-channel Doherty amplifier
CN203039643U (en) * 2012-12-29 2013-07-03 福州大学 Four-stage double-balanced power amplifier
CN103534935A (en) * 2013-06-07 2014-01-22 华为技术有限公司 Doherty power amplifier circuit, signal processing circuit and a multi-band base station
CN105846784A (en) * 2016-03-21 2016-08-10 天津大学 Design method for GaN HEMT multistage radio frequency power amplifier and amplifier
CN106411267A (en) * 2016-10-12 2017-02-15 杭州电子科技大学 Novel broadband three-path Doherty power amplifier and implementation method thereof
US20180152149A1 (en) * 2016-11-30 2018-05-31 Sumitomo Electric Device Innovations, Inc. Doherty amplifier
CN206620209U (en) * 2017-04-18 2017-11-07 深圳国人通信股份有限公司 A kind of high-power amplifying device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111934633A (en) * 2020-09-27 2020-11-13 成都嘉纳海威科技有限责任公司 High-power gain high-back-off efficiency power amplifier

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