WO2024032411A1 - Amplificateur de puissance et son procédé de commande, et dispositif de communication - Google Patents

Amplificateur de puissance et son procédé de commande, et dispositif de communication Download PDF

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Publication number
WO2024032411A1
WO2024032411A1 PCT/CN2023/110249 CN2023110249W WO2024032411A1 WO 2024032411 A1 WO2024032411 A1 WO 2024032411A1 CN 2023110249 W CN2023110249 W CN 2023110249W WO 2024032411 A1 WO2024032411 A1 WO 2024032411A1
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WIPO (PCT)
Prior art keywords
power amplifier
phase
pin tube
signal
input terminal
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PCT/CN2023/110249
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English (en)
Chinese (zh)
Inventor
吴涛
张晓毅
刘金金
丁冲
Original Assignee
中兴通讯股份有限公司
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Publication of WO2024032411A1 publication Critical patent/WO2024032411A1/fr

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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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier

Definitions

  • Embodiments of the present application relate to but are not limited to the field of communication technology, and in particular, to a power amplifier and its control method, and communication equipment.
  • Doherty power amplifier is currently the most widely used architecture to improve power amplifier efficiency. It consists of a main power amplifier and an auxiliary power amplifier.
  • the main power amplifier maintains high efficiency at low power
  • the auxiliary power amplifier has the same power as the main power amplifier at high power. Synthesis achieves high power and high efficiency operation.
  • the two links of the main power amplifier and the auxiliary power amplifier need to be phase-aligned. If the phases are not aligned, the efficiency of the power amplifier will be low.
  • the base station when the base station is working in the field, the number of connected users changes dynamically in time, which corresponds to the power amplifier working at different power levels. In this case, there are also differences in the phases of the main power amplifier and the auxiliary power amplifier. .
  • microstrip lines to adjust the phase of the main power amplifier.
  • the microstrip line itself does not have dynamic adjustment capabilities, it is impossible to effectively complete the phase alignment of the main power amplifier and the auxiliary power amplifier when facing the above problems.
  • Embodiments of the present application provide a power amplifier, a control method thereof, and communication equipment.
  • a power amplifier includes:
  • a signal output terminal, a first signal branch and a second signal branch connected in parallel are provided between the signal output terminal and the signal input terminal;
  • the first signal branch is provided with a connected first PIN tube phase shifter and a first power amplifier unit, wherein the first PIN tube phase shifter is provided with a bias voltage input terminal, and the first PIN tube
  • the phase shifter adjusts the output phase of the first signal branch when the bias voltage input terminal receives a bias voltage control signal;
  • the second signal branch is provided with a second power amplifier unit.
  • the power amplifier includes a signal input terminal and a signal output terminal, and a first parallel connection is provided between the signal output terminal and the signal input terminal.
  • the first signal branch is provided with a connected first PIN tube phase shifter and a first power amplifier unit, wherein the first PIN tube phase shifter is provided with a bias a voltage input terminal;
  • the second signal branch is provided with a second power amplifier unit;
  • control methods include:
  • a bias voltage control signal is sent to the bias voltage input terminal so that the output phase of the first signal branch matches the output phase of the second signal branch.
  • a communication device includes the Doherty power amplifier of the embodiment of the first aspect of the present application.
  • Figure 1 is a schematic structural diagram of a power amplifier provided by an embodiment of the present application.
  • Figure 2 is a schematic structural diagram of a power amplifier provided by another embodiment of the present application.
  • Figure 3 is a schematic diagram of a first PIN tube phase shifter provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of a cascade of multiple first PIN tube phase shifters provided by an embodiment of the present application
  • Figure 5 is a schematic diagram of a first PIN tube phase shifter provided by another embodiment of the present application.
  • Figure 6 is a schematic diagram of a first PIN tube phase shifter provided by another embodiment of the present application.
  • Figure 7 is a schematic diagram of capacitance changes of the first PIN tube phase shifter provided by an embodiment of the present application under different reverse bias voltages;
  • Figure 8 is a schematic diagram of the corresponding schematic diagram of the output phase of the power amplifier and the compensation phase of the first PIN tube phase shifter when the first PIN tube phase shifter is not added according to an embodiment of the present application;
  • Figure 9 is a schematic diagram comparing the output efficiency of the power amplifier before and after phase alignment according to an embodiment of the present application.
  • Figure 10 is a flow chart of a power amplifier control method provided by an embodiment of the present application.
  • This application provides a power amplifier, its control method, and communication equipment, which utilizes the phase shift capability of the first PIN tube phase shifter 100.
  • the first PIN tube phase shifter 100 can adjust the phase of the output signal of the first signal branch so that the phase of the output signal of the first signal branch can match the phase of the output signal of the second signal branch, effectively improving the output efficiency of the power amplifier. , and has the ability to dynamically adjust.
  • Figure 1 is a schematic circuit diagram of a power amplifier provided by an embodiment of the present application.
  • the power amplifier includes a signal input terminal 400, a signal output terminal 500, a first signal branch and a second signal branch;
  • the signal output terminal 500 has a first signal branch and a second signal branch connected in parallel between the signal output terminal 500 and the signal input terminal 400;
  • the first signal branch is provided with a connected first PIN tube phase shifter 100 and a first power amplifier unit 200, wherein the first PIN tube phase shifter 100 is provided with a bias voltage input terminal, and the first PIN tube phase shifter 100 is provided with a bias voltage input terminal. 100 adjusts the output phase of the first signal branch when the bias voltage input terminal receives the bias voltage control signal;
  • the second signal branch is provided with a second power amplifier unit 300.
  • the first PIN tube phase shifter 100 can adjust the phase of the radio frequency signal.
  • the radio frequency signal is input to the signal input terminal 400
  • the signals directly output by the first power amplifier unit 200 and the second power amplifier unit 300 will There is a phase difference.
  • the phase adjustment of the output signal of the first power amplifier unit 200 can be completed, so that the first signal The phase between the branch and the second signal branch is matched, thereby reducing the loss of power synthesis and improving the output efficiency of the entire power amplifier.
  • the phase difference will continue to change as the power level and frequency change.
  • the phase difference between the first signal branch and the second signal branch at different power levels and frequencies can be determined.
  • the first signal branch can be The PIN tube phase shifter 100 can perform phase adjustment to different degrees to achieve phase matching between the first signal branch and the second signal branch at different power levels, effectively improving the output efficiency of the entire power amplifier.
  • FIG. 3 is a schematic diagram of a first PIN tube phase shifter provided by an embodiment of the present application.
  • the first PIN tube phase shifter 100 includes a first PIN tube group 110 and a second PIN tube group 120.
  • the first PIN tube group 110 and the second PIN tube group 120 both include two PIN diodes with anodes connected to each other, and the two PIN tube groups are connected by microstrip lines 103 (ML, meander line) of different lengths.
  • ML meander line
  • phase-shifting input terminal 101 is provided at the anode connection of the PIN tube
  • a phase-shifting output terminal 102 is provided at the anode connection of the two PIN tubes in the second PIN tube group 120 .
  • the phase shift input terminal 101 of the first PIN tube phase shifter 100 is connected to the signal input terminal 400, and the phase shift output terminal 102 is connected to the first power amplifier unit 200.
  • the first PIN tube group 110 and Multiple PIN tubes in the second PIN tube group 120 send bias voltage control signals, so that different PIN tubes complete corresponding bias state adjustments, thereby realizing phase adjustment.
  • the length of the phase shift is affected by the microstrip between the PIN tubes.
  • the microstrip line 103 on the upper side and the microstrip line 103 on the lower side have different line lengths, which can affect the phase adjustment of the first PIN tube phase shifter 100 to varying degrees.
  • Figure 4 is a schematic diagram of a cascade of multiple first PIN tube phase shifters provided by an embodiment of the present application.
  • the multiple first PIN tube phase shifters 100 are connected through the phase shift input terminal 101 and
  • the phase shift output terminal 102 is connected in turn.
  • the range of phase adjustment that a single first PIN tube phase shifter 100 can complete is small, and it is difficult to meet the needs of phase shift in some cases.
  • Multiple first PIN tube phase shifters 100 can be cascaded, so that a larger range of phase shift can be achieved.
  • a single first PIN tube phase shifter 100 can achieve smaller phase adjustment.
  • the microstrip line 103 can be added or the microstrip line can be reduced. Line 103 quantity is enough.
  • FIG. 5 is a schematic diagram of a first PIN tube phase shifter 100 provided by another embodiment of the present application.
  • the first PIN tube phase shifter 100 includes: a phase-shifting input terminal 101 and a phase-shifting output terminal. 102.
  • the first open-circuit stub unit 131 is a microstrip open-circuit stub. Each first open-circuit stub unit 131 in the third PIN tube group can be equivalent to a section of reactance.
  • the phase-shifting input terminal 101 of the first PIN tube phase shifter 100 is connected to the signal input terminal 400 , and the phase-shifting output terminal 102 is connected to the first power amplifier unit 200 .
  • the bias voltage control signal is sent to each third PIN tube group to change the bias state of the PIN tube connected to the first signal branch, thereby achieving phase adjustment.
  • a microstrip line 103 is connected between the phase-shifting input terminal 101 and the phase-shifting output terminal 102.
  • the two ends of the microstrip line 103 are each connected to one end of a third PIN tube group.
  • the other end of the third PIN tube group is connected to the ground wire.
  • the cathode of the PIN tube of each third PIN tube group is connected to the ground wire, and the anode is connected to the microstrip line 103
  • the first open branch unit 131 is formed.
  • the bias state of the PIN tubes in the two third PIN tube groups can be adjusted by sending a bias voltage control signal, thereby achieving phase adjustment.
  • more third PIN tube groups are incorporated between the phase-shifting input terminal 101 and the phase-shifting output terminal 102.
  • Each third PIN tube group is connected to Between the microstrip line 103 and the ground line, that is, a plurality of third PIN tube groups divide the microstrip line 103 into multiple sections.
  • FIG. 6 is a schematic diagram of a first PIN tube phase shifter provided by another embodiment of the present application.
  • the first PIN tube phase shifter 100 includes: a phase-shifting input terminal 101 and a phase-shifting output terminal 102. , a four-port bridge, a fourth PIN tube group and a fifth PIN tube group; the four-port bridge is provided with an RF input end, an RF output end, a first bias end, a second bias end, an RF input end and a phase shifter
  • the input terminal 101 is connected, the radio frequency output terminal is connected to the phase-shifting output terminal 102, the first bias terminal is connected to the ground wire through the fourth PIN tube group, and the second bias terminal is connected to the ground wire through the fifth PIN tube group;
  • the fourth Both the PIN tube group and the fifth PIN tube group include parallel second open-circuit branch units 141 and PIN tubes.
  • the four-port bridge can choose a 3dB bridge or similar functional circuit, which can achieve 3dB power division, and the two phases of the power division are 0° and 90° respectively.
  • the RF input end and RF output end of the four-port bridge are connected to the shifter respectively.
  • the phase input terminal 101, the phase shift output terminal 102, the first bias terminal and the second bias terminal are connected to the fourth PIN tube group and the fifth PIN tube group respectively.
  • the second open-circuit branch unit 141 in the fourth PIN tube group and the fifth PIN tube group can be equivalent to a section of reactance. Specifically, the cathodes of the PIN tubes in the fourth PIN tube group and the fifth PIN tube group are connected to the ground wire.
  • the anode of the PIN tube in the fourth PIN tube group is connected to the first bias terminal
  • the anode of the PIN tube in the fifth PIN tube group is connected to the second bias terminal
  • the second open-circuit branch in the fourth PIN tube group and the fifth PIN tube group Unit 141 is directly connected in parallel at both ends of the respective PIN tubes.
  • the phase-shifting input terminal 101 is connected to the signal input terminal 400
  • the phase-shifting output terminal 102 is connected to the first power amplifier unit 200 .
  • the reverse bias capacitance value can be changed by adjusting the stub length of the second open-circuit stub unit 141 and the bias state of the PIN tube, thereby changing the phase of the input signal, thereby achieving a more accurate phase alignment effect. , to achieve higher power amplifier efficiency.
  • Figure 7 is a schematic diagram of the capacitance change of the first PIN tube phase shifter provided by an embodiment of the present application under different reverse bias voltages.
  • the abscissa in Figure 7 is the reverse bias voltage value, and the ordinate is the reverse bias value. Capacitance value, it can be clearly seen from the figure that the greater the anti-fraud voltage, the smaller the reverse bias capacitance value. Using this clear correspondence, the phase adjustment can be completed by adjusting the status of the fourth PIN tube group.
  • the second signal branch is further provided with a second PIN tube phase shifter connected to the second power amplifier unit 300 .
  • Installing PIN tube phase shifters in both the first signal branch and the second signal branch can also complete phase correction, and in some scenarios, can provide more accurate phase alignment, thereby more effectively improving the performance of the power amplifier. Output efficiency.
  • the circuit structure of the second PIN tube phase shifter adopts the same circuit structure as that of the first PIN tube phase shifter. circuit structure, or the circuit structure can be appropriately adjusted according to actual phase adjustment needs to better achieve phase alignment.
  • the first power amplifier unit 200 and the second power amplifier unit 300 are composed of a power amplifier (PA, power amplifier), a compensation line (Offset line), an input matching network (IMN, input matching network), and an output matching network ( OMN, output matching network), the first power amplifier unit 200 is a main power amplifier branch, and the second power amplifier unit 300 is an auxiliary power amplifier branch.
  • the first power amplifier unit 200 includes a first power amplifier 210 and a first compensation line 220 connected in sequence. , the first input matching network 230, the second power amplifier 240 and the first output matching network 250; the first power amplifier 210 is connected to the first PIN tube phase shifter 100.
  • the first PIN tube phase shifter 100 receives the radio frequency signal through the signal input terminal 400, and outputs the phase-shifted radio frequency signal to the input terminal of the first power amplifier 210.
  • a compensation line 220, the first input matching network 230, the second power amplifier 240, and the first output matching network 250 complete signal amplification and conditioning and then output the signal through the output end of the first output matching network 250.
  • the second power amplifier unit 300 when the first power amplifier unit 200 is a main power amplifier branch, the second power amplifier unit 300 is an auxiliary power amplifier branch.
  • the second power amplifier unit 300 includes a third power amplifier 310 and a second input matching device connected in sequence.
  • Network 320, fourth power amplifier 330, second output matching network 340 and second compensation line 350 when the first power amplifier unit 200 is a main power amplifier branch, the second power amplifier unit 300 is an auxiliary power amplifier branch.
  • the second power amplifier unit 300 includes a third power amplifier 310 and a second input matching device connected in sequence.
  • Network 320, fourth power amplifier 330, second output matching network 340 and second compensation line 350 when the first power amplifier unit 200 is a main power amplifier branch, the second power amplifier unit 300 is an auxiliary power amplifier branch.
  • the third power amplifier 310 receives the radio frequency signal through the signal input terminal 400, and completes amplification through the third power amplifier 310, the second input matching network 320, the fourth power amplifier 330, the second output matching network 340, and the second compensation line 350. , is conditioned and output through the output end of the second compensation line 350, and is synthesized with the phase-shifted signal output by the first output matching network 250.
  • the first power amplifier 210 and the second power amplifier 240 both work in class AB mode, and the third power amplifier 310 and the fourth power amplifier 330 need to work in class C. mode.
  • the first power amplifier unit 200 includes a first power amplifier 210, a first compensation line 220, and a first matching network connected in sequence; the first power amplifier 210 is phase-shifted with the first PIN tube. 100 connections.
  • the first PIN tube phase shifter 100 receives the radio frequency signal through the signal input terminal 400, and outputs the phase-shifted radio frequency signal to the input terminal of the first power amplifier 210.
  • a compensation line 220 and the first matching network output the signal after completing signal amplification and conditioning.
  • a single power amplifier, compensation line and matching network are used to design the signal branch.
  • the purpose of signal power amplification and phase adjustment can also be achieved, and the space occupied can be reduced to a certain extent.
  • the second power amplifier unit 300 includes a third power amplifier 310, a second matching network, and a second compensation line 350 connected in sequence.
  • the third power amplifier 310 receives the radio frequency signal through the signal input terminal 400, and passes through the third power amplifier 310.
  • the rate amplifier 310, the second matching network, and the second compensation line 350 complete amplification and conditioning before outputting, and are synthesized with the phase-shifted signal output by the first matching network.
  • a single power amplifier, compensation line and matching network are used to design the signal branch.
  • the purpose of signal power amplification and phase adjustment can also be achieved, and can be achieved in a certain manner. Reduce space occupied to a certain extent.
  • the first power amplifier unit 200 is an auxiliary power amplifier branch
  • the second power amplifier unit 300 is a main power amplifier branch.
  • the first PIN tube phase shifter 100 is connected to the power amplifier at the front end of the auxiliary power amplifier branch.
  • the power amplifier is a Doherty power amplifier
  • the first signal branch is the main power amplifier branch
  • the second signal branch It is the auxiliary power amplifier branch.
  • the input end of the first PIN tube phase shifter 100 is connected to the signal input end 400 for accessing radio frequency signals.
  • the first PIN tube phase shifter 100 is used to complete the phase adjustment.
  • the bias voltage input terminal of 100 sends a bias voltage control signal, and the bias voltage control signal is used to change the phase shift of the radio frequency signal passing through the first PIN tube phase shifter 100.
  • the radio frequency signal after adjusting the phase will pass through the main power amplifier branch.
  • the circuit completes signal amplification and conditioning, and performs power synthesis with the output signal of the auxiliary power amplifier branch for phase offset adjustment.
  • the bias voltage control signal sent to the bias voltage input end of the first PIN tube phase shifter 100 will be appropriately adjusted according to the power level of the power amplifier. Different power levels are usually accompanied by different degrees of phase. Offset, by predetermining the relationship between power level and phase offset, and the corresponding relationship between the specific control value of the bias voltage control signal and the power level, the corresponding bias voltage control signal can be used at a specific power level. Complete phase adjustment.
  • Figure 8 is a schematic diagram corresponding to the output phase of the power amplifier and the compensation phase of the first PIN tube phase shifter when the first PIN tube phase shifter is not added according to an embodiment of the present application.
  • the abscissa in the figure is frequency.
  • the ordinate phase the circular icon is the output phase of the first signal branch of the power amplifier when the first PIN tube phase shifter is not added
  • the rectangular icon is the compensation phase of the first PIN tube phase shifter.
  • the first PIN tube phase shifter can be used to compensate accordingly, so that the phase can be aligned to within ⁇ 5°.
  • a power amplifier that works in a wide frequency band has an improvement effect at different frequency points within the working frequency band.
  • Figure 9 is a schematic diagram comparing the output efficiency of the power amplifier before and after phase alignment provided by an embodiment of the present application.
  • the abscissa in the figure is the output power
  • the ordinate is the efficiency
  • the rectangular icon is before phase alignment (that is, the first PIN tube phase shift is not added).
  • the circular icon is the corresponding relationship between the output power and the effect after phase alignment (that is, adding the first PIN tube phase shifter). It can be clearly seen from Figure 9 that after adding the first PIN tube phase shifter to complete the phase alignment, Under the same output power, the output efficiency will be at a higher level.
  • the bias voltage control can be controlled by sending the bias voltage to the first PIN tube phase shifter 100 and the second PIN tube phase shifter respectively.
  • the signal method completes the phase adjustment of the two branches.
  • the bias voltage control signal can be sent to the first PIN tube phase shifter 100 and the second PIN tube phase shifter respectively. This method completes the phase adjustment of the two branches.
  • phase difference between the main power amplifier branch and the auxiliary power amplifier branch in addition to considering the impact of the power level on the phase difference between the main power amplifier branch and the auxiliary power amplifier branch, other factors that affect the phase difference can also be used to adjust the phase difference according to the power level.
  • the way to complete the adjustment is not limited to the adjustment based on the power level.
  • the phase difference between the main power amplifier branch and the auxiliary power amplifier branch can be matched according to the operating frequency of the power amplifier.
  • the power amplifier includes a signal input terminal 400 and a signal output terminal 500.
  • a parallel first signal branch and a second signal branch are provided between the signal output terminal 500 and the signal input terminal 400;
  • the first signal The branch is provided with a connected first PIN tube phase shifter 100 and a first power amplifier unit 200, wherein the first PIN tube phase shifter 100 is provided with a bias voltage input terminal;
  • the second signal branch is provided with a second power amplifier Unit 300;
  • Control methods include:
  • the bias voltage control signal is sent to the bias voltage input terminal so that the output phase of the first signal branch matches the output phase of the second signal branch.
  • the first PIN tube phase shifter 100 can realize phase adjustment. Adjustment.
  • the phase adjustment of the output signal of the first power amplifier unit 200 can be completed, so that the first signal branch and the second signal The phases between the branches are matched, thereby reducing the loss of power synthesis and improving the output efficiency of the entire power amplifier.
  • sending a bias control voltage signal to the bias voltage input terminal includes but is not limited to step S100 to step S300,
  • Step S100 obtain the power information of the power amplifier
  • Step S200 determine the bias control voltage signal according to the power information
  • Step S300 Send a bias voltage signal to the bias voltage input terminal.
  • the phase difference will continue due to power changes and other reasons. Variety.
  • the phase difference between the first signal branch and the second signal branch at different power levels can be determined, and by sending different bias voltage control signals at different power levels, so that The first PIN tube phase shifter 100 can perform phase adjustment to different degrees, ultimately achieving phase matching for the first signal branch and the second signal branch under different working conditions, effectively improving the output efficiency of the entire power amplifier. .
  • the power amplifier is a Doherty power amplifier
  • the first signal branch is the main power amplifier branch
  • the second signal branch is the main power amplifier branch
  • the signal branch is the auxiliary power amplifier branch.
  • the input end of the first PIN tube phase shifter 100 is connected to the signal input end 400, and the radio frequency signal is connected.
  • the main power amplifier branch and the auxiliary power amplifier branch will change. Different degrees of phase offset will occur.
  • the phase of the output signal of the main power amplifier branch needs to be adjusted.
  • the phase difference between the output of the main power amplifier and the auxiliary power amplifier is different, which requires different degrees of phase adjustment for different power levels and frequencies.
  • the bias voltage input end of the tube phase shifter 100 sends different bias control voltage signals, so that corresponding phase adjustments can be completed for different power levels and frequencies.
  • the radio frequency signal adjusted by the first PIN tube will be processed and conditioned by the main power amplifier, and will be power synthesized with the output signal of the auxiliary power amplifier branch for phase offset adjustment.
  • Figure 8 is a schematic diagram corresponding to the output phase of the power amplifier and the compensation phase of the first PIN tube phase shifter when the first PIN tube phase shifter is not added according to an embodiment of the present application.
  • the abscissa in the figure is frequency.
  • the ordinate phase the circular icon is the output phase of the first signal branch of the power amplifier when the first PIN tube phase shifter is not added
  • the rectangular icon is the compensation phase of the first PIN tube phase shifter. It can be seen from Figure 8 that as the frequency increases, the output phase of the power amplifier deviates. At this time, the first PIN tube phase shifter can be used to compensate accordingly.
  • Figure 9 is a schematic diagram comparing the output efficiency of the power amplifier before and after phase alignment provided by an embodiment of the present application.
  • the abscissa in the figure is the output power
  • the ordinate is the efficiency
  • the rectangular icon is before phase alignment (that is, the first PIN tube phase shift is not added).
  • the circular icon is the corresponding relationship between the output power and the effect after phase alignment (that is, adding the first PIN tube phase shifter). It can be clearly seen from Figure 9 that after adding the first PIN tube phase shifter to complete phase alignment, the output efficiency will be at a higher level under the same output power.
  • the bias voltage control can be controlled by sending the bias voltage to the first PIN tube phase shifter 100 and the second PIN tube phase shifter respectively.
  • the signal method completes the phase adjustment of the two branches.
  • the bias voltage control signal can be sent to the first PIN tube phase shifter 100 and the second PIN tube phase shifter respectively. This method completes the phase adjustment of the two branches.
  • phase difference between the main power amplifier branch and the auxiliary power amplifier branch in addition to considering the impact of the power level on the phase difference between the main power amplifier branch and the auxiliary power amplifier branch, other factors that affect the phase difference can also be used to adjust the phase difference according to the power level.
  • the way to complete the adjustment is not limited to the adjustment based on the power level.
  • the phase difference between the main power amplifier branch and the auxiliary power amplifier branch can be matched according to the operating frequency of the power amplifier.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Microwave Amplifiers (AREA)
  • Amplifiers (AREA)

Abstract

La présente invention concerne un amplificateur de puissance et son procédé de commande, et un dispositif de communication. L'amplificateur de puissance comprend une extrémité d'entrée de signal (400), une extrémité de sortie de signal (500), et une première branche de signal et une seconde branche de signal qui sont agencées en parallèle entre l'extrémité de sortie de signal et l'extrémité d'entrée de signal. La première branche de signal est pourvue d'un premier déphaseur de diode PIN (100) et d'une première unité d'amplificateur de puissance (200) connectées l'une à l'autre, le premier déphaseur de diode PIN (100) étant pourvu d'une extrémité d'entrée de tension de polarisation, et lors de la réception d'un signal de commande de tension de polarisation au niveau de l'extrémité d'entrée de tension de polarisation, le premier déphaseur de diode PIN (100) ajuste une phase de sortie de la première branche de signal. La seconde branche de signal est pourvue d'une seconde unité d'amplificateur de puissance (300).
PCT/CN2023/110249 2022-08-08 2023-07-31 Amplificateur de puissance et son procédé de commande, et dispositif de communication WO2024032411A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210945079.XA CN117579002A (zh) 2022-08-08 2022-08-08 功率放大器及其控制方法、通讯设备
CN202210945079.X 2022-08-08

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WO2024032411A1 true WO2024032411A1 (fr) 2024-02-15

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WO (1) WO2024032411A1 (fr)

Citations (6)

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