WO2017005034A1 - 功率放大系统、方法及装置 - Google Patents

功率放大系统、方法及装置 Download PDF

Info

Publication number
WO2017005034A1
WO2017005034A1 PCT/CN2016/079679 CN2016079679W WO2017005034A1 WO 2017005034 A1 WO2017005034 A1 WO 2017005034A1 CN 2016079679 W CN2016079679 W CN 2016079679W WO 2017005034 A1 WO2017005034 A1 WO 2017005034A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
peak
power amplifier
amplifier
peak power
Prior art date
Application number
PCT/CN2016/079679
Other languages
English (en)
French (fr)
Inventor
刘璐
张晓毅
李朋军
王鑫
姚颖
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017005034A1 publication Critical patent/WO2017005034A1/zh

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
    • H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
    • H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
    • H03F1/07—Doherty-type amplifiers

Definitions

  • the present invention relates to the field of communications, and in particular to a power amplification system, method and apparatus.
  • Doherty technology a mature technology that is most widely used in base station power amplifiers is Doherty technology, which has the advantages of small size, low cost and high back-off efficiency. At present, most power amplifier manufacturers have begun mass production of Doherty amplifiers.
  • the 4th Generation mobile communication technology (4G) and even the 5th generation mobile communication technology (the 5th) Generation mobile communication technology, referred to as 5G) technology development even the same signal system, multi-mode mixed mode configuration has changed a lot, the corresponding signal peak-to-average ratio is different, the traditional Doherty power amplifier design is based on The specific signal peak-to-average ratio is designed to be compatible with a specific system of power amplifier schemes, and current base station designs fall into this category.
  • the base station products that operators usually need are able to meet a variety of signal formats and are energy efficient. They do not want to replace hardware products frequently. So how can the communication base station be compatible with a variety of signal peak-to-average ratios and green energy saving?
  • FIG 1 is a schematic diagram of the structure of the Doherty power amplifier in the related art.
  • the Doherty power amplifier consists of two power amplifiers: one main power amplifier and one auxiliary.
  • the power amplifier, the main power amplifier works in class B or class AB, and the auxiliary power amplifier works in class C.
  • the power synthesis and impedance transformation of the two power amplifiers is to achieve a 25 ohm-50 ohm impedance transformation using a quarter-wavelength 35 ohm line.
  • the use of the Doherty power amplifier cannot solve the above problems in the related art.
  • the invention provides a power amplification system, method and device to solve at least the problems in the related art that are incompatible with different signal peak-to-average ratios.
  • a power amplification system comprising a carrier power amplifier, further comprising: two or more peak power amplifiers and an output power synthesis and impedance transformation network circuit, wherein the output power synthesis and impedance transformation network Included in the circuit are two or more matching network circuits respectively corresponding to the two or more peak power amplifiers, the two or more peak power amplifiers being set to match network circuits corresponding to the two or more peak power amplifiers,
  • the carrier power amplifier cooperates to amplify the power of different peak-to-average ratio signals.
  • the power amplifier further includes a control circuit, wherein the control circuit is configured to select a peak power amplifier from the two or more peak power amplifiers according to a peak-to-average ratio of the input signal, and control and select the The peak power amplifier corresponds to the conduction of the matching network circuit.
  • the power amplifier further includes a first high power switching circuit and a second high power switching circuit, wherein the first high power switching circuit is connected to an input end of the two or more peak power amplifiers, a second high power switching circuit coupled to the outputs of the two or more peak power amplifiers, the control circuit from the two or more peak powers by the first high power switching circuit and the second high power switching circuit Select the peak power amplifier in the amplifier.
  • a power amplification method comprising: determining a peak-to-average ratio of an input signal; selecting a peak power from two or more peak power amplifiers of the power amplification system according to a peak-to-average ratio of the input signal An amplifier that amplifies power of the input signal using the selected peak power amplifier and a carrier power amplifier in the power amplification system.
  • selecting a peak power amplifier according to a peak-to-average ratio of the input signal from two or more peak power amplifiers of the power amplification system includes: controlling the two or more peak power amplifiers according to a peak-to-average ratio of the input signal The manner of input and output selects the peak power amplifier from more than two peak power amplifiers of the power amplification system.
  • a peak power amplifier according to a peak-to-average ratio of the input signal from two or more peak power amplifiers of the power amplification system
  • a power amplifying apparatus comprising: a determining module configured to determine a peak-to-average ratio of an input signal; and a selecting module configured to select a peak-to-average ratio of the input signal from the power amplifying system A peak power amplifier is selected from the two or more peak power amplifiers; an amplification module configured to amplify the power of the input signal using the selected peak power amplifier and a carrier power amplifier in the power amplification system.
  • the selection module includes: a selection unit configured to select more than two from the power amplification system according to a peak-to-average ratio of the input signal by controlling input and output of the two or more peak power amplifiers Select the peak power amplifier in the peak power amplifier.
  • the device further includes: a control module configured to control, according to the selected peak power amplifier, a matching network circuit corresponding to the selected peak power amplifier in the power synthesis and impedance transformation network circuit of the power amplification system Turning on, wherein the power combining and impedance transforming network circuit includes two or more matching network circuits, and the two or more matching network circuits respectively correspond to the two or more peak power amplifiers.
  • a control module configured to control, according to the selected peak power amplifier, a matching network circuit corresponding to the selected peak power amplifier in the power synthesis and impedance transformation network circuit of the power amplification system Turning on, wherein the power combining and impedance transforming network circuit includes two or more matching network circuits, and the two or more matching network circuits respectively correspond to the two or more peak power amplifiers.
  • a power amplification system comprising the apparatus of any of the above.
  • Another embodiment of the present invention provides a computer storage medium storing execution instructions for performing the method in the above embodiments.
  • two or more peak power amplifiers and an output power synthesis and impedance transformation network circuit are employed, wherein the output power synthesis and impedance transformation network circuit includes two or more corresponding to the two or more peak power amplifiers, respectively.
  • Matching network circuits, the two or more peak power amplifiers are configured to cooperate with a matching network circuit corresponding to the two or more peak power amplifiers, and the carrier power amplifier to amplify power of different peak-to-average ratio signals.
  • Solved related technology Intraoperative problems cannot be compatible with different signal peak-to-average ratios, and thus the compatibility of different signal peak-to-average ratios is achieved, and the highest efficiency can be achieved under different peak-to-average ratios.
  • 1 is a schematic structural diagram of a Doherty power amplifier in the related art
  • FIG. 2 is a block diagram showing the structure of a first power amplifying system according to an embodiment of the present invention
  • FIG. 3 is a block diagram 1 showing a preferred structure of a first power amplifying system according to an embodiment of the present invention
  • FIG. 4 is a block diagram 2 of a preferred structure of a first power amplifying system according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a power amplification method according to an embodiment of the present invention.
  • FIG. 6 is a block diagram showing the structure of a power amplifying device according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of a selection module 64 in a power amplifying device according to an embodiment of the present invention.
  • FIG. 8 is a block diagram showing a preferred configuration of a power amplifying device according to an embodiment of the present invention.
  • FIG. 9 is a block diagram showing the structure of a second power amplifying system according to an embodiment of the present invention.
  • FIG. 10 is a graph showing a graph of Doherty power amplifier efficiency with power back-off according to an embodiment of the present invention.
  • FIG. 11 is a diagram of a Doherty power amplifier architecture in accordance with an embodiment of the present invention.
  • FIG. 12 is a block diagram showing the structure of a power combining and impedance transforming network in accordance with an embodiment of the present invention.
  • the power amplifying system includes a carrier power amplifier 22, and further includes: two or more peak power amplifiers 24 and output power combining and An impedance transforming network circuit 26, wherein the output power combining and impedance transforming network circuit 26 includes two or more matching network circuits 28 respectively corresponding to the two or more peak power amplifiers, the two or more peak power amplifiers 24 being set to and The matching network circuit 28 and the carrier power amplifier 22 corresponding to the two or more peak power amplifiers cooperate to amplify the power of the different peak-to-average ratio signals.
  • the connection relationship of each module may be: carrier power amplifier 22 and two or more peak powers.
  • Amplifier 24 is connected in parallel to output power synthesis and impedance transformation network circuit 26.
  • Figure 2 Figure 2 shows three peak power amplifiers as an example. The three peak power amplifiers in Figure 2 are all indicated by number 24. In practical applications, the three peak power amplifiers can be different from each other. ).
  • FIG. 3 is a block diagram of a preferred structure of a first power amplifying system according to an embodiment of the present invention.
  • the power amplifying system includes all the modules shown in FIG. 2 (ie, the respective amplifiers in FIG. 2 and In addition to the circuit, a control circuit 32 is also included, which will be described below.
  • control circuit 32 coupled to the two or more peak power amplifiers 24 and the output power synthesis and impedance conversion network circuit 26, configured to select a peak power amplifier from the two or more peak power amplifiers 24 according to a peak-to-average ratio of the input signal, and Controlling the conduction of the matching network circuit corresponding to the selected peak power amplifier.
  • FIG. 4 is a block diagram 2 of a preferred structure of a first power amplifying system according to an embodiment of the present invention. As shown in FIG. 4, the system includes all the modules shown in FIG. 3 (ie, the respective amplifiers and circuits in FIG. 3). In addition, a first switch 42 and a second switch 44 are also included, the system being described below.
  • the first switch 42 is connected to the input ends of the two or more peak power amplifiers 24, the second switch 44 is connected to the output ends of the two or more peak power amplifiers 24, and the control circuit 32 passes through the first switch 42 and the second Switch 44 selects a peak power amplifier from more than two peak power amplifiers 24.
  • FIG. 5 is a flowchart of a power amplification method according to an embodiment of the present invention. As shown in FIG. 5, the process includes the following steps:
  • Step S502 determining a peak-to-average ratio of the input signal
  • Step S504 selecting a peak power amplifier according to a peak-to-average ratio of the input signal from two or more peak power amplifiers of the power amplification system;
  • Step S506 the power of the input signal is amplified by using a selected peak power amplifier and a carrier power amplifier in the power amplification system.
  • the power amplifying system includes two or more peak power amplifiers, and the peak power amplifier that satisfies the requirements can be selected from the two or more peak power amplifiers according to the peak-to-average ratio of the input signal, thereby realizing amplification of different peak-to-average ratios.
  • the power of the signal Therefore, the problem of incompatibility with different signal peak-to-average ratios in the related art is solved, and the peak-to-average ratio of different signals is compatible, and the highest efficiency can be achieved under different peak-to-average ratios.
  • selecting a peak power amplifier from the two or more peak power amplifiers of the power amplification system according to the peak-to-average ratio of the input signal includes: controlling the above two peaks according to a peak-to-average ratio of the input signal The manner in which the input and output of the power amplifier are selected selects the peak power amplifier from more than two peak power amplifiers of the power amplification system.
  • the way to select the peak power amplifier is only an example, and other methods can be used for selection. Here, it is not enumerated.
  • the method further includes: controlling the power amplification according to the selected peak power amplifier.
  • the power synthesis and impedance transformation network circuit of the system is connected to the matching network circuit corresponding to the selected peak power amplifier, wherein the power synthesis and impedance transformation network circuit includes two or more matching network circuits, and the two or more matching The network circuits correspond to the above two or more peak power amplifiers, respectively.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a power amplifying device is further provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and the description thereof has been omitted.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 6 is a structural block diagram of a power amplifying apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes a determining module 62, a selecting module 64 (corresponding to the above-mentioned control circuit 32), and an amplifying module 66. The device is described.
  • a determining module 62 configured to determine a peak-to-average ratio of the input signal
  • a selecting module 64 coupled to the determining module 62, configured to select a peak power from the two or more peak power amplifiers of the power amplifying system according to a peak-to-average ratio of the input signal An amplifier
  • amplification module 66 coupled to the selection module 62, is configured to amplify the power of the input signal using a selected peak power amplifier and a carrier power amplifier in the power amplification system.
  • FIG. 7 is a structural block diagram of a selection module 64 in a power amplifying apparatus according to an embodiment of the present invention. As shown in FIG. 7, the selection module 64 includes a selection unit 72, which will be described below.
  • the selecting unit 72 is arranged to select the peak power amplifier from the two or more peak power amplifiers of the power amplifying system in accordance with the peak-to-average ratio of the input signal described above by controlling the inputs and outputs of the two or more peak power amplifiers.
  • FIG. 8 is a block diagram showing a preferred configuration of a power amplifying apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes a control module 82 (corresponding to the above-described control circuit 32) in addition to all the modules shown in FIG. The device will be described below.
  • a control module 82 corresponding to the above-described control circuit 32
  • the control module 82 is connected to the selection module 64, and is configured to control the conduction of the matching network circuit corresponding to the selected peak power amplifier in the power synthesis and impedance conversion network circuit of the power amplification system according to the selected peak power amplifier.
  • the power synthesis and impedance transformation network circuit includes two or more matching network circuits, and the two or more matching network circuits respectively correspond to two or more peak power amplifiers.
  • FIG. 9 is a block diagram showing the structure of a second power amplifying system according to an embodiment of the present invention.
  • the power amplifying system 92 includes the power amplifying device 94 of any of the above.
  • the following is an example in which the power amplification system described above is a Doherty power amplifier.
  • FIG. 10 is a schematic diagram of a Doherty power amplifier efficiency with power back-off according to an embodiment of the present invention.
  • the power amplifier retreats by 6 dB to achieve the highest efficiency, which is applied to the peak-to-average ratio. 6dB signal system; but when the signal peak-to-average ratio is increased (for example, 9.5dB, 12dB), if we still use the 1:1 Doherty architecture, the efficiency index will deteriorate significantly.
  • the signal peak-to-average ratio is increased (for example, 9.5dB, 12dB)
  • the efficiency index will deteriorate significantly.
  • the efficiency of Doherty will inevitably deteriorate.
  • the power amplification architecture designed in the embodiment of the present invention is composed of a carrier amplifier and a plurality of peak amplifiers. According to different peak-to-average ratios of the application signals, the peak amplifier and the corresponding matching network are switched by the control circuit to form different asymmetry ratios. Doherty architecture. Under the condition of ensuring linear power output, the highest efficiency can be achieved under different peak-to-average ratios. Thereby solving the above problems existing in the related art.
  • the Doherty power amplifier is a Doherty power amplifier that switches a peak power amplifier through a control circuit, and is mainly composed of the following parts: a carrier power amplifier and a plurality of Peak power amplifier, input power division network, output impedance transformation network, and control circuit with high power RF switch.
  • M is a carrier power amplifier (Carrier Amplifier), or a main power amplifier (Main Amplifier), which may also be referred to as a main power amplifier, and is in a class AB working state;
  • Carrier Amplifier Carrier Amplifier
  • Main Amplifier Main Amplifier
  • P 1 -P n is a Peak Amplifier or an auxiliary power amplifier (Auxiliary Amplifier), which may also be referred to as an auxiliary power amplifier, and is generally a Class B or Class C state;
  • the input power division network generally uses a 3dB bridge for power distribution and phase balancing
  • the output impedance transformation network is generally composed of a 1/4 wavelength microstrip line and a combined point impedance conversion line;
  • the control circuit is the core of the entire Doherty architecture. It sends a CTRL signal from the transceiver board of the base station. By controlling the conduction of the high-power switch, the Peak Amplifier and the output matching network are selected, and finally the switching of different peak power amplifiers is realized.
  • the base transceiver board sends three sets of control signals according to the change of the signal system.
  • the first group of control signals CTRL1 selects the input of the Peak tube through the input high power switch
  • the second group of control signals CTRL2 passes the output of the high power switch pair.
  • the output of the Peak tube is selected, and the third group of control signals are divided into n ways to realize the transformation of the output matching network.
  • FIG. 12 is a structural block diagram of the power synthesis and impedance transformation network according to an embodiment of the present invention.
  • the transformation of the matching network is essentially the transformation of the junction impedance Zin
  • a series connection of the diode and the microwave matching capacitor is placed at a specific position of the output impedance line of the output 50 ohm (designed to be determined by simulation debugging), when the CTRL signal is selected
  • the signal line 1 in Figure 12 is turned on at a high level, and the remaining signal lines are at a low level, corresponding to the diode being turned off. Only the microwave capacitor 1 is matched to make the junction point impedance Zin transform to the target value, corresponding to M and Peak1.
  • Output impedance transformation network similarly, when Peak2 is selected to work, signal line 2 is turned on at a high level, and microwave capacitor 2 is involved in matching to achieve M and P.
  • the implementation manner in the embodiment of the present invention is simple, and can not only be compatible with various signal formats, but also reduce hardware opening. Types of hair, cost savings, and a good solution to the problem of reduced efficiency compared to different peak-to-average signals. Those skilled in the art can readily implement this patent in accordance with this patent. This architecture can be widely applied to Doherty power amplifiers.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the processor performs the above steps S1-S3 according to the stored program code in the storage medium.
  • the solution in the embodiment of the present invention can be compatible with most signal standards, which not only reduces the development type, but also solves the different peak-to-average ratio signal bands.
  • the problem of reduced efficiency Realize the green energy saving of the base station system.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • a power amplification system, method, and apparatus provided by an embodiment of the present invention have the following beneficial effects: solving the problem of being incompatible with different signal peak-to-average ratios in the related art, thereby achieving compatibility with different signal peak-to-average ratios. , to achieve the highest efficiency in the peak to average ratio of different standards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

本发明提供了一种功率放大系统、方法及装置，其中，该功率放大方法包括：确定输入信号的峰均比；根据该输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器；利用选择的峰值功率放大器和功率放大系统中的载波功率放大器放大上述输入信号的功率。通过本发明，解决了相关技术中存在的无法兼容不同信号峰均比的问题，进而达到了兼容不同信号峰均比，实现在不同制式峰均比下均能达到最高效率的效果。

Description

功率放大系统、方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种功率放大系统、方法及装置。
背景技术
面对日益激烈的市场竞争，基站产品的高效率化已经成为行业竞争的焦点，目前基站功放最为广泛应用的一种成熟技术就是Doherty技术，其优点为功放尺寸小，成本低，回退效率高，目前大部分功放厂家都已开始批量生产应用Doherty功放。但随着第三代移动通信技术(the 3th Generation mobile communication technology，简称为3G)，第四代移动通信技术(the 4th Generation mobile communication technology，简称为4G)甚至第五代移动通信技术(the 5th Generation mobile communication technology，简称为5G)技术的发展，即使是同一种信号制式，多模混模配置也变化繁多，其对应的信号峰均比更是大小不一，传统的Doherty功放设计便是根据特定的信号峰均比，设计来兼容特定制式的功放方案，目前的基站设计均属此类。但通常运营商需要的基站产品是可以满足多种信号制式、并高效节能的，他们并不希望频繁更换硬件产品。那么如何使通信基站可以兼容多种信号峰均比且绿色节能呢？这便成了设备制造商和运营商最为关心的问题，图1是相关技术中的Doherty功率放大器结构示意图，如图1所示，该Doherty功率放大器由2个功放组成：一个主功放，一个辅助功放，主功放工作在B类或者AB类，辅助功放工作在C类。两个功放的功率合成与阻抗变换是采用四分之一波长的35欧姆线实现25欧姆-50欧姆阻抗变换。但是采用该Doherty功率放大器无法解决相关技术中存在的上述问题。
针对相关技术中存在的无法兼容不同信号峰均比的问题，目前尚未提出有效的解决方案。
发明内容
本发明提供了一种功率放大系统、方法及装置，以至少解决相关技术中存在的无法兼容不同信号峰均比的问题。
根据本发明的一个方面，提供了一种功率放大系统，包括载波功率放大器，还包括：两个以上峰值功率放大器和输出功率合成及阻抗变换网络电路，其中，所述输出功率合成及阻抗变换网络电路中包括两个以上分别对应于所述两个以上峰值功率放大器的匹配网络电路，所述两个以上峰值功率放大器设置为和与所述两个以上峰值功率放大器对应的匹配网络电路、所述载波功率放大器配合放大不同峰均比信号的功率。
可选地，所述功率放大器还包括控制电路，其中，所述控制电路设置为根据输入信号的峰均比从所述两个以上峰值功率放大器中选择峰值功率放大器，并控制与选择的所述峰值功率放大器对应的匹配网络电路的导通。
可选地，所述功率放大器还包括第一大功率开关电路和第二大功率开关电路，其中，所述第一大功率开关电路与所述两个以上峰值功率放大器的输入端连接，所述第二大功率开关电路与所述两个以上峰值功率放大器的输出端连接，所述控制电路通过所述第一大功率开关电路和所述第二大功率开关电路从所述两个以上峰值功率放大器中选择峰值功率放大器。
根据本发明的另一方面，提供了一种功率放大方法，包括：确定输入信号的峰均比；根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器；利用选择的所述峰值功率放大器和所述功率放大系统中的载波功率放大器放大所述输入信号的功率。
可选地，根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器包括：根据所述输入信号的峰均比通过控制所述两个以上峰值功率放大器的输入和输出的方式从所述功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器。
可选地，在根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器之后，还包括：根据选择的峰值功率放大器控制所述功率放大系统的功率合成及阻抗变换网络电路中与选择的所述峰值功率放大器对应的匹配网络电路的导通，其中，所述功率合成及阻抗变换网络电路中包括两个以上匹配网络电路，所述两个以上匹配网络电路分别对应于所述两个以上峰值功率放大器。
根据本发明的另一方面，提供了一种功率放大装置，包括：确定模块，设置为确定输入信号的峰均比；选择模块，设置为根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器；放大模块，设置为利用选择的所述峰值功率放大器和所述功率放大系统中的载波功率放大器放大所述输入信号的功率。
可选地，所述选择模块包括：选择单元，设置为根据所述输入信号的峰均比通过控制所述两个以上峰值功率放大器的输入和输出的方式从所述功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器。
可选地，所述装置还包括：控制模块，设置为根据选择的峰值功率放大器控制所述功率放大系统的功率合成及阻抗变换网络电路中与选择的所述峰值功率放大器对应的匹配网络电路的导通，其中，所述功率合成及阻抗变换网络电路中包括两个以上匹配网络电路，所述两个以上匹配网络电路分别对应于所述两个以上峰值功率放大器。
根据本发明的另一方面，还提供了一种功率放大系统，包括上述任一项所述的装置。
本发明另一实施例提供了一种计算机存储介质，所述计算机存储介质存储有执行指令，所述执行指令用于执行上述实施例中的方法。
通过本发明，采用两个以上峰值功率放大器和输出功率合成及阻抗变换网络电路，其中，所述输出功率合成及阻抗变换网络电路中包括两个以上分别对应于所述两个以上峰值功率放大器的匹配网络电路，所述两个以上峰值功率放大器用于和与所述两个以上峰值功率放大器对应的匹配网络电路、所述载波功率放大器配合放大不同峰均比信号的功率。解决了相关技 术中存在的无法兼容不同信号峰均比的问题，进而达到了兼容不同信号峰均比，实现在不同制式峰均比下均能达到最高效率的效果。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是相关技术中的Doherty功率放大器结构示意图；
图2是根据本发明实施例的第一种功率放大系统的结构框图；
图3是根据本发明实施例的第一种功率放大系统的优选结构框图一；
图4是根据本发明实施例的第一种功率放大系统的优选结构框图二；
图5是根据本发明实施例的功率放大方法的流程图；
图6是根据本发明实施例的功率放大装置的结构框图；
图7是根据本发明实施例的功率放大装置中选择模块64的结构框图；
图8是根据本发明实施例的功率放大装置的优选结构框图；
图9是根据本发明实施例的第二种功率放大系统的结构框图；
图10是根据本发明实施例的Doherty功放效率随功率回退的曲线示意图；
图11是根据本发明实施例的Doherty功放架构图；
图12是根据本发明实施例的功率合成及阻抗变换网络的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
图2是根据本发明实施例的第一种功率放大系统的结构框图，如图2所示，该功率放大系统包括载波功率放大器22，还包括：两个以上峰值功率放大器24和输出功率合成及阻抗变换网络电路26，其中，该输出功率合成及阻抗变换网络电路26中包括两个以上分别对应于上述两个以上峰值功率放大器的匹配网络电路28，该两个以上峰值功率放大器24设置为和与该两个以上峰值功率放大器对应的匹配网络电路28、载波功率放大器22配合放大不同峰均比信号的功率。其中，上述的各模块的连接关系可以为：载波功率放大器22和两个以上峰值功率 放大器24并联连接至输出功率合成及阻抗变换网络电路26。具体可参见图2(图2以三个峰值功率放大器为例说明，图2中的三个峰值功率放大器都用编号24进行表示，在实际应用时，三个峰值功率放大器可以是互不相同的)。
图3是根据本发明实施例的第一种功率放大系统的优选结构框图一，如图3所示，该功率放大系统除包括图2所示的所有模块(即，图2中的各个放大器及电路)外，还包括控制电路32，下面对该系统进行说明。
控制电路32，连接至上述两个以上峰值功率放大器24和输出功率合成及阻抗变换网络电路26，设置为根据输入信号的峰均比从上述两个以上峰值功率放大器24中选择峰值功率放大器，并控制与选择的该峰值功率放大器对应的匹配网络电路的导通。
图4是根据本发明实施例的第一种功率放大系统的优选结构框图二，如图4所示，该系统除包括图3所示的所有模块(即，图3中的各个放大器及电路)外，还包括第一开关42和第二开关44，下面对该系统进行说明。
该第一开关42与上述两个以上峰值功率放大器24的输入端连接，该第二开关44与上述两个以上峰值功率放大器24的输出端连接，上述控制电路32通过第一开关42和第二开关44从两个以上峰值功率放大器24中选择峰值功率放大器。
在本实施例中提供了一种功率放大方法，图5是根据本发明实施例的功率放大方法的流程图，如图5所示，该流程包括如下步骤：
步骤S502，确定输入信号的峰均比；
步骤S504，根据该输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器；
步骤S506，利用选择的峰值功率放大器和功率放大系统中的载波功率放大器放大上述输入信号的功率。
从上述步骤可知，功率放大系统中包括两个以上峰值功率放大器，根据输入信号的峰均比可以从该两个以上峰值功率放大器中选择满足要求的峰值功率放大器，从而可以实现放大不同峰均比信号的功率。从而解决了相关技术中存在的无法兼容不同信号峰均比的问题，进而达到了兼容不同信号峰均比，实现在不同制式峰均比下均能达到最高效率的效果。
在一个可选的实施例中，根据上述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器包括：根据该输入信号的峰均比通过控制上述两个以上峰值功率放大器的输入和输出的方式从该功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器。当然该种选择峰值功率放大器的方式仅仅是一种实例，还可以采用其他的方式进行选择，在此，不一一列举。
在一个可选的实施例中，在根据上述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器之后，还包括：根据选择的峰值功率放大器控制功率放大 系统的功率合成及阻抗变换网络电路中与选择的该峰值功率放大器对应的匹配网络电路的导通，其中，该功率合成及阻抗变换网络电路中包括两个以上匹配网络电路，该两个以上匹配网络电路分别对应于上述两个以上峰值功率放大器。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
在本实施例中还提供了一种功率放大装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图6是根据本发明实施例的功率放大装置的结构框图，如图6所示，该装置包括确定模块62、选择模块64(对应于上述的控制电路32)和放大模块66，下面对该装置进行说明。
确定模块62，设置为确定输入信号的峰均比；选择模块64，连接至上述确定模块62，设置为根据上述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器；放大模块66，连接至上述选择模块62，设置为利用选择的峰值功率放大器和功率放大系统中的载波功率放大器放大该输入信号的功率。
图7是根据本发明实施例的功率放大装置中选择模块64的结构框图，如图7所示，该选择模块64包括选择单元72，下面对该选择模块64进行说明。
选择单元72，设置为根据上述输入信号的峰均比通过控制两个以上峰值功率放大器的输入和输出的方式从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器。
图8是根据本发明实施例的功率放大装置的优选结构框图，如图8所示，该装置除包括图6所示的所有模块外，还包括控制模块82(对应于上述的控制电路32)，下面对该装置进行说明。
控制模块82，连接至上述选择模块64，设置为根据选择的峰值功率放大器控制功率放大系统的功率合成及阻抗变换网络电路中与选择的峰值功率放大器对应的匹配网络电路的导通，其中，该功率合成及阻抗变换网络电路中包括两个以上匹配网络电路，该两个以上匹配网络电路分别对应于两个以上峰值功率放大器。
图9是根据本发明实施例的第二种功率放大系统的结构框图，如图9所示，该功率放大系统92包括上述任一项的功率放大装置94。
下面以上述功率放大系统为Doherty功放为例，进行说明。
图10是根据本发明实施例的Doherty功放效率随功率回退的曲线示意图，当两路Doherty的非对称比为1：1时，功放回退6dB可达到最高效率，正好应用于峰均比为6dB的信号制式；但当信号峰均比增大时(例如9.5dB、12dB)，如果我们仍然使用1：1Doherty架构，其效率指标将恶化明显。此时我们可选择1：2或1：3的Doherty架构来满足不同回退下的效率要求。但总体说来一种Doherty架构仅能满足一种类型的信号峰均比，当外部信号制式发生变化时，Doherty的效率必然会恶化明显。
而本发明实施例中设计的功率放大架构是由一个载波放大器和多个峰值放大器构成的，根据应用信号峰均比的不同，通过控制电路切换峰值放大器与对应的匹配网络，形成不同非对称比的Doherty架构。在保证线性功率输出的条件下，实现在不同制式峰均比下的都能达到最高效率的目的。从而解决相关技术中存在的上述问题。
图11是根据本发明实施例的Doherty功放架构图，如图11所示，该Doherty功放是通过控制电路切换峰值功率放大器的Doherty功放，主要由以下几部分电路组成：一个载波功率放大器、多个峰值功率放大器、输入功分网络、输出阻抗变换网络以及带有大功率射频开关的控制电路。
其中，M为载波功率放大器(Carrier Amplifier)，或者称为主功率放大器(Main Amplifier)，也可简称为主功放，处于AB类工作状态；
P1-Pn是峰值功率放大器(Peak Amplifier)或者称为辅助功率放大器(Auxiliary Amplifier)，也可简称为辅助功放，一般为B类或者C类状态；
输入功分网络一般用3dB电桥兼作功率分配和相位平衡作用；
输出阻抗变换网络一般由1/4波长微带线和合路点阻抗变换线构成；
控制电路部分为整个Doherty架构的核心，其由基站的收发信板发出CTRL信号，通过控制大功率开关的导通，实现Peak Amplifier与输出匹配网络的选择，最终实现不同峰值功率放大器的切换。
下面结合图11对工作流程进行说明：
由基站收发信板根据信号制式的变化发出三组控制信号，首先第一组控制信号CTRL1通过输入的大功率开关对Peak管的输入进行选择，第二组控制信号CTRL2通过输出的大功率开关对Peak管的输出进行选择，第三组控制信号分为n路，实现输出匹配网络的变换，具体实施方案可见附图12，图12是根据本发明实施例的功率合成及阻抗变换网络的结构框图，由于匹配网络的变换其实质是合路点阻抗Zin的变换，在输出50欧姆的阻抗变换线的特定位置(设计中需仿真调试确定)放置二极管与微波匹配电容的串联结构，当CTRL信号选择Peak1工作时，图12中信号线1高电平导通，其余信号线为低电平，对应二极管截止，只有微波电容1参与匹配使合路点阻抗Zin变换至目标值，对应于M和Peak1的输出阻抗变换网络；同理当选择Peak2工作时，信号线2高电平导通，微波电容2参与匹配实现M和Peak2的输出阻抗变换网络。本发明实施例中的实现方式简单，不但能够兼容多种信号制式，减少硬件开 发种类，节省成本，而且很好解决不同峰均比信号带来的效率降低的问题。同一技术领域的技术人员按照本专利能够很容易地实现。本架构可广泛的应用于Doherty功率放大器。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，确定输入信号的峰均比；
S2，根据该输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器；
S3，利用选择的峰值功率放大器和功率放大系统中的载波功率放大器放大上述输入信号的功率。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行上述步骤S1-S3。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
对于固定频段和输出功率的基站设计需求，与现有技术相比，采用本发明实施例中的方案可以兼容大部分信号制式，不但使得开发种类得到减少，而且很好解决不同峰均比信号带来的效率降低的问题。真正做到基站系统的绿色节能。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种功率放大系统、方法及装置具有以下有益效果：解决了相关技术中存在的无法兼容不同信号峰均比的问题，进而达到了兼容不同信号峰均比，实现在不同制式峰均比下均能达到最高效率的效果。

Claims (10)

  1. 一种功率放大系统，包括载波功率放大器，还包括：两个以上峰值功率放大器和输出功率合成及阻抗变换网络电路，其中，所述输出功率合成及阻抗变换网络电路中包括两个以上分别对应于所述两个以上峰值功率放大器的匹配网络电路，所述两个以上峰值功率放大器设置为和与所述两个以上峰值功率放大器对应的匹配网络电路、所述载波功率放大器配合放大不同峰均比信号的功率。
  2. 根据权利要求1所述的功率放大系统，其中，所述功率放大器还包括控制电路，其中，所述控制电路设置为根据输入信号的峰均比从所述两个以上峰值功率放大器中选择峰值功率放大器，并控制与选择的所述峰值功率放大器对应的匹配网络电路的导通。
  3. 根据权利要求2所述的功率放大系统，其中，所述功率放大器还包括第一大功率开关电路和第二大功率开关电路，其中，所述第一大功率开关电路与所述两个以上峰值功率放大器的输入端连接，所述第二大功率开关电路与所述两个以上峰值功率放大器的输出端连接，所述控制电路通过所述第一大功率开关电路和所述第二大功率开关电路从所述两个以上峰值功率放大器中选择峰值功率放大器。
  4. 一种功率放大方法，包括：
    确定输入信号的峰均比；
    根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器；
    利用选择的所述峰值功率放大器和所述功率放大系统中的载波功率放大器放大所述输入信号的功率。
  5. 根据权利要求4所述的方法，其中，根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器包括：
    根据所述输入信号的峰均比通过控制所述两个以上峰值功率放大器的输入和输出的方式从所述功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器。
  6. 根据权利要求4所述的方法，其中，在根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器之后，还包括：
    根据选择的峰值功率放大器控制所述功率放大系统的功率合成及阻抗变换网络电路中与选择的所述峰值功率放大器对应的匹配网络电路的导通，其中，所述功率合成及阻抗变换网络电路中包括两个以上匹配网络电路，所述两个以上匹配网络电路分别对应于所述两个以上峰值功率放大器。
  7. 一种功率放大装置，包括：
    确定模块，设置为确定输入信号的峰均比；
    选择模块，设置为根据所述输入信号的峰均比从功率放大系统的两个以上峰值功率 放大器中选择峰值功率放大器；
    放大模块，设置为利用选择的所述峰值功率放大器和所述功率放大系统中的载波功率放大器放大所述输入信号的功率。
  8. 根据权利要求7所述的装置，其中，所述选择模块包括：
    选择单元，设置为根据所述输入信号的峰均比通过控制所述两个以上峰值功率放大器的输入和输出的方式从所述功率放大系统的两个以上峰值功率放大器中选择峰值功率放大器。
  9. 根据权利要求7所述的装置，其中，还包括：
    控制模块，设置为根据选择的峰值功率放大器控制所述功率放大系统的功率合成及阻抗变换网络电路中与选择的所述峰值功率放大器对应的匹配网络电路的导通，其中，所述功率合成及阻抗变换网络电路中包括两个以上匹配网络电路，所述两个以上匹配网络电路分别对应于所述两个以上峰值功率放大器。
  10. 一种功率放大系统，包括权利要求7至9中任一项所述的装置。
PCT/CN2016/079679 2015-07-07 2016-04-19 功率放大系统、方法及装置 WO2017005034A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510394108.8 2015-07-07
CN201510394108.8A CN106330102A (zh) 2015-07-07 2015-07-07 功率放大系统、方法及装置

Publications (1)

Publication Number Publication Date
WO2017005034A1 true WO2017005034A1 (zh) 2017-01-12

Family

ID=57684870

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/079679 WO2017005034A1 (zh) 2015-07-07 2016-04-19 功率放大系统、方法及装置

Country Status (2)

Country Link
CN (1) CN106330102A (zh)
WO (1) WO2017005034A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113783571B (zh) * 2021-08-25 2024-03-22 深圳市中科蓝讯科技股份有限公司 信号强度自动调节方法、存储介质及芯片

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1529935A (zh) * 2000-12-29 2004-09-15 �������ɭ 用于高效率的信号发射机的三重E类Doherty放大器拓扑
CN102545788A (zh) * 2011-12-29 2012-07-04 武汉正维电子技术有限公司 一种多路非对称Doherty放大器
CN202424626U (zh) * 2011-12-29 2012-09-05 武汉正维电子技术有限公司 一种多路非对称Doherty放大器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2159912A1 (en) * 2008-08-29 2010-03-03 Alcatel, Lucent Multi-band Doherty amplifier
JP5338262B2 (ja) * 2008-11-05 2013-11-13 日本電気株式会社 電力増幅器およびその増幅方法
CN102137518B (zh) * 2010-01-25 2013-04-17 华为技术有限公司 Doherty功放和多频段信号参数调整装置
KR101677555B1 (ko) * 2010-02-25 2016-11-21 삼성전자주식회사 도허티 증폭기에서 낮은 전력 영역에서의 효율을 향상시키기 위한 장치
CN102185563B (zh) * 2011-04-29 2016-03-02 中兴通讯股份有限公司 一种Doherty功放装置
US9209511B2 (en) * 2011-10-14 2015-12-08 Anaren, Inc. Doherty power amplifier network
CN202535310U (zh) * 2012-03-07 2012-11-14 武汉正维电子技术有限公司 一种多级多路Doherty放大器
CN103580623A (zh) * 2012-08-10 2014-02-12 中兴通讯股份有限公司 一种射频功放装置以及一种射频功率放大方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1529935A (zh) * 2000-12-29 2004-09-15 �������ɭ 用于高效率的信号发射机的三重E类Doherty放大器拓扑
CN102545788A (zh) * 2011-12-29 2012-07-04 武汉正维电子技术有限公司 一种多路非对称Doherty放大器
CN202424626U (zh) * 2011-12-29 2012-09-05 武汉正维电子技术有限公司 一种多路非对称Doherty放大器

Also Published As

Publication number Publication date
CN106330102A (zh) 2017-01-11

Similar Documents

Publication Publication Date Title
US9331638B2 (en) Doherty power amplifier apparatus
US8022760B2 (en) 3-way Doherty amplifier with minimum output network
US8653889B1 (en) Doherty amplifier having compact output matching and combining networks
CN110266275B (zh) 一种连续逆F类和J类混合的宽带Doherty功率放大器
WO2014029240A1 (zh) 多模功率放大器、多模切换方法及其移动终端
EP2541759A1 (en) Doherty power amplifier and implementation method therefor
US20140035679A1 (en) Power Amplifier Device and Power Amplifier Circuit Thereof
EP2963810B1 (en) Doherty power amplification circuit and power amplifier
EP2538549A1 (en) Doherty power amplifier and implementation method therefor
WO2012146002A1 (zh) 一种多合体功率放大器及其实现方法
EP2541766A1 (en) Power amplification tube and power amplification method
Tufféry et al. CMOS fully integrated reconfigurable power amplifier with efficiency enhancement for LTE applications
CN104393843A (zh) 采用多级式辅路放大器的Doherty功率放大器
WO2016180130A1 (zh) 功放电路及其负载阻抗调制方法
WO2017005034A1 (zh) 功率放大系统、方法及装置
CN104640011A (zh) 一种应用于ap的双频功放装置及ap设备
US8797099B2 (en) Power amplifier device and power amplifier circuit thereof
US8742842B2 (en) High efficiency power amplifier architecture for off-peak traffic hours
EP2538548B1 (en) Method and device for controlling peak amplifier, and doherty power amplifier
US20130099867A1 (en) Apparatus for doherty power amplifier and method for power amplification
WO2018036287A1 (zh) 功率放大器
US20130222065A1 (en) Doherty power amplifier apparatus and power amplification method
CN117240233A (zh) 功率放大器、功率放大方法、电子设备及存储介质
CN115733446A (zh) 一种功率放大电路及功率放大器
WO2014023241A1 (zh) 功率放大管装置、多路射频功率放大电路及其实现方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16820685

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16820685

Country of ref document: EP

Kind code of ref document: A1