WO2024087212A1 - 功率放大装置的调节方法以及功率放大装置 - Google Patents

功率放大装置的调节方法以及功率放大装置 Download PDF

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Publication number
WO2024087212A1
WO2024087212A1 PCT/CN2022/128400 CN2022128400W WO2024087212A1 WO 2024087212 A1 WO2024087212 A1 WO 2024087212A1 CN 2022128400 W CN2022128400 W CN 2022128400W WO 2024087212 A1 WO2024087212 A1 WO 2024087212A1
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Prior art keywords
power amplifier
signal
control unit
power
microstrip line
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PCT/CN2022/128400
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English (en)
French (fr)
Inventor
王占航
潘立学
李恒
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海能达通信股份有限公司
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Priority to PCT/CN2022/128400 priority Critical patent/WO2024087212A1/zh
Publication of WO2024087212A1 publication Critical patent/WO2024087212A1/zh

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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems

Definitions

  • the present application relates to the field of power amplifiers, and in particular to a method for regulating a power amplifier and a power amplifier.
  • power amplifier adjustment devices are mostly used to solve the problem of power amplifier adjustment under the condition of a peak-to-average ratio power amplifier input.
  • the traditional method maximizes efficiency by adopting an AB balanced circuit and adjusting the drain voltage.
  • the advantages are obvious for signals with low peak-to-average ratios, and the power amplifier linearity is better.
  • the advantages are not obvious, and the use of two power amplifier branches results in a large energy loss when the input is a low-power signal.
  • the traditional power amplifier has a fixed output power level, and the power amplifier can only achieve the optimal efficiency for a specific output power, and it is impossible to achieve a continuously variable working state of the input power amplifier.
  • the present application provides a method for regulating a power amplifier device and a power amplifier device, so as to solve the problem that the power amplifier in the prior art cannot realize continuous variable working state of the power amplifier.
  • the present application provides a method for adjusting a power amplifier device, which is applied to a power amplifier.
  • the power amplifier device includes a first control unit, a second control unit, a switch unit, a first power amplifier branch, and a second power amplifier branch.
  • the adjustment method includes:
  • the first control unit receives an input signal from the power amplifier device, and generates a control signal, a first adjustment signal, and a second adjustment signal based on a matching result between the input signal and a preset table;
  • the first control unit controls the switch unit to select a corresponding power amplifier branch from the first power amplifier branch and the second power amplifier branch through the control signal, adjusts a first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, so that the working state of the power amplifier can be continuously adjusted between a first type of working state and a second type of working state.
  • the step of generating a control signal, a first adjustment signal and a second adjustment signal based on the matching result of the input signal and the preset table includes: the first control unit obtains a power level corresponding to the input signal based on matching the received input signal with the preset table, and obtains a matching result based on matching the power level of the input signal with the preset table, and generates the control signal, the first adjustment signal and the second adjustment signal based on the matching result; wherein the preset table stores the power level associated with the input signal, and the preset table stores configuration parameters of the control signal, the first adjustment signal and the second adjustment signal corresponding to the power level.
  • the first control unit matches the input signal with the preset table.
  • the first control unit detects that the input signal is within the power level range of the first power, the first control unit generates the control signal, the first adjustment signal and the second adjustment signal based on the input signal, and controls the switch unit to select a corresponding power amplifier branch from the first power amplifier branch and the second power amplifier branch to input the input signal through the control signal; the first control unit matches the input signal with the preset table.
  • the first control unit When the first control unit detects that the input signal is within the power level range of the second power/third power, the first control unit generates the control signal, the first adjustment signal and the second adjustment signal based on the input signal, and controls the switch unit to simultaneously input the input signal to the first power amplifier branch and the second power amplifier branch through the control signal.
  • the first control unit when the first control unit detects that the input signal is within the power level range of the first power, the first control unit adjusts the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and controls the second control unit to adjust the second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, thereby configuring the power amplifier in the selected power amplifier branch to enter the first type of working state; when the first control unit detects that the input signal is within the power level range of the second power/the third power, the first control unit adjusts the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and controls the second control unit to adjust the second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, thereby configuring the power amplifier in the selected power amplifier branch to enter the second type of working state.
  • the present application also provides a power amplifier device, including a first control unit, a second control unit, a switch unit, a first power amplifier branch and a second power amplifier branch, wherein: the first control unit receives an input signal of the power amplifier device, and generates a control signal, a first adjustment signal and a second adjustment signal based on the matching result of the input signal and a preset table; the second control unit is connected to the first control unit, the first power amplifier branch and the second power amplifier branch; the switch unit is connected to the first control unit, and the switch unit is connected to the input end of the first power amplifier branch and the input end of the second power amplifier branch; the first control unit is used to control the switch unit to select a corresponding power amplifier branch from the first power amplifier branch and the second power amplifier branch through the control signal, adjust the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and control the second control unit to adjust the second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, so that the working state of
  • the present application provides a method for adjusting a power amplifier device and a power amplifier device, the power amplifier device comprising a first control unit, a second control unit, a switch unit, a first power amplifier branch and a second power amplifier branch, the adjustment method comprising: the first control unit receives an input signal of the power amplifier device, and generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result between the input signal and a preset table; the first control unit controls the switch unit to select a corresponding power amplifier branch from the first power amplifier branch and the second power amplifier branch through the control signal, adjusts a first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, so that the working state of the power amplifier can be continuously adjusted between the first type of working state and the second type of working state.
  • the working state of the power amplifier can be continuously adjusted by controlling the switch unit to select
  • FIG1 is a circuit diagram of a first embodiment of a power amplifier device of the present application.
  • FIG2 is a schematic flow chart of a first embodiment of a method for adjusting a power amplifier device of the present invention
  • FIG3 is a schematic flow chart of a second embodiment of a method for adjusting a power amplifier device of the present application
  • FIG. 4 is a circuit diagram of a second embodiment of a power amplifier device of the present application.
  • Figure 1 is a circuit diagram of the first embodiment of the power amplifier device of the present application
  • Figure 2 is a flow diagram of the first embodiment of the adjustment method of the power amplifier device of the present application.
  • the power amplifier device of this embodiment includes a first control unit 10, a second control unit 20, a switch unit 30, a first power amplifier branch 40 and a second power amplifier branch 50.
  • the first control unit 10 receives an input signal from the power amplifying device, and generates a control signal, a first adjustment signal, and a second adjustment signal based on the input signal.
  • the second control unit 20 is connected to the first control unit 10, the first power amplifier branch 40, and the second power amplifier branch 50.
  • the switch unit 30 is connected to the first control unit 10, and the switch unit 30 is connected to the input end of the first power amplifier branch 40 and the input end of the second power amplifier branch 50.
  • the first control unit 10 outputs a control signal to the control switch unit 30, so as to control the switch unit 30 to select a corresponding power amplifier branch from the first power amplifier branch 40 and the second power amplifier branch 50 through the control signal.
  • the first control unit 10 outputs a first adjustment signal to the power amplifier in the selected power amplifier branch, so as to adjust the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal.
  • the first control unit 10 simultaneously outputs a second adjustment signal to the second control unit 20, and the second control unit 20 controls the power amplifier in the selected power amplifier branch based on the second adjustment signal. Through the second adjustment signal, the first control unit 10 can control the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch, so that the working state of the power amplifier can be continuously adjusted between the first type of working state and the second type of working state.
  • FIG. 2 is a flow chart of a first embodiment of the adjustment method of the power amplifier device of the present application. As shown in FIG. 2 , the adjustment method of the present application includes the following steps:
  • the first control unit 10 receives an input signal of the power amplifying device, and generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result between the input signal and a preset table.
  • the first control unit 10 receives the input signal of the power amplifier device through the input detection unit 60, and the first control unit 10 generates a control signal, a first adjustment signal and a second adjustment signal based on matching the received input signal with the preset table and matching the power level corresponding to the input signal with the preset table.
  • the preset table stores the power level associated with the input signal, and the input signal is divided into 15-20 power levels based on the average power and peak power of the input signal.
  • the control signal, the first adjustment signal, and the second adjustment signal corresponding to each power level set corresponding configuration parameters.
  • the multiple power levels corresponding to the input signal are also divided into power levels of a first power range, power levels of a second power range, and power levels of a third power range.
  • the preset table needs to be calibrated accordingly according to the power amplifier device used, and written into the first control unit 10 as a matching basis for the first control unit 10.
  • the input signal is in the power level range of the first power, which corresponds to the case where the input signal is low power.
  • the peak-to-average value of the input signal is relatively small, and the average power is small;
  • the input signal is in the power level range of the second power/third power, which corresponds to the case where the input signal is medium power/high power.
  • the peak-to-average value of the input signal is relatively large, and the average power is large.
  • the ratio of the peak power of the input signal to the total average power of the input signal is the peak-to-average ratio.
  • the first control unit 10 controls the switch unit 30 to select a corresponding power amplifier branch from the first power amplifier branch 40 and the second power amplifier branch 50 through a control signal.
  • the first control unit 10 controls the switch unit 30 to select the corresponding power amplifier branch input to receive the input signal from the first power amplifier branch 40 and the second power amplifier branch 50 based on the control signal generated by the matching result between the input signal and the preset table.
  • the first control unit 10 When the first control unit 10 detects that the input signal is within the power level range of the first power, the peak-to-average ratio of the input signal detected by the input detection unit 60 is relatively small, and the average power of the input signal is small.
  • the first control unit 10 sets the corresponding configuration parameters of the switch unit 30 based on the control signal generated by the input signal, controls the switch unit 30 to select a corresponding power amplifier branch from the first power amplifier branch 40 and the second power amplifier branch 50 to conduct, and inputs the received input signal, so that when the input signal is the first power, the power amplification device uses a single power amplifier branch input.
  • the first control unit 10 When the first control unit 10 detects that the input signal is within the power level range of the second power/third power, the peak-to-average ratio of the input signal detected by the input detection unit 60 is relatively large, and the average power is large.
  • the first control unit 10 sets the corresponding configuration parameters of the switch unit 30 based on the control signal generated by the input signal, and controls the switch unit 30 to simultaneously input the received input signal to the first power amplifier branch 40 and the second power amplifier branch 50, so that when the input signal is the second power/third power, the power amplifier device uses two power amplifier branches for simultaneous input.
  • the power amplifier device of the present application connects the first power amplifier branch 40/the second power amplifier branch 50 to the phase device so that the first power amplifier branch 40 and the second power amplifier branch 50 can amplify the input signals in the positive half cycle and the negative half cycle respectively.
  • the first power amplifier branch 40 is used to process the input signal in the positive half cycle
  • the second power amplifier branch 50 is used to process the input signal in the negative half cycle
  • the first control unit 10 sets corresponding configuration parameters of the switch unit 30 based on the control signal generated by the input signal to select the first power amplifier branch 40 to be turned on.
  • the first control unit 10 sets corresponding configuration parameters of the switch unit 30 based on the control signal generated by the input signal to select the second power amplifier branch 50 to be turned on.
  • the input signal When the input signal is within the power level range of the second power/third power, the input signal includes input signals of the positive half cycle and the negative half cycle.
  • the first control unit 10 sets the corresponding configuration parameters of the switch unit 30 based on the control signal generated by the input signal to select the first power amplifier branch 40 and the second power amplifier branch 50 to be turned on at the same time.
  • the power amplifier device can also be configured so that the first power amplifier branch 40 processes the input signal in the negative half cycle, and the second power amplifier branch 50 processes the input signal in the positive half cycle.
  • the first control unit 10 adjusts a first parameter of a power amplifier in the selected power amplifier branch through a first adjustment signal, and controls the second control unit 20 to adjust a second parameter of the power amplifier in the selected power amplifier branch through a second adjustment signal.
  • the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifier branch based on the first adjustment signal generated based on the matching result of the input signal and the preset table, and controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch based on the second adjustment signal generated based on the matching result of the input signal and the preset table.
  • the first control unit 10 When the first control unit 10 detects that the input signal is within the power level range of the first power, the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifier branch through a first adjustment signal, and controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch through a second adjustment signal, so that the power amplifier is in a Class C working state, that is, the first Class working state.
  • the first control unit 10 When the first control unit 10 detects that the input signal is within the power level range of the second power/third power, the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, so that the power amplifier is in a Class AB working state, that is, the second Class working state.
  • the first parameter is the gate voltage of the power amplifier
  • the first control unit 10 is connected to the gate of the power amplifier in the power amplifier branch, that is, the first adjustment signal is used to adjust the gate voltage of the power amplifier
  • the second parameter is the drain voltage of the power amplifier
  • the second control unit 20 is connected to the drain of the power amplifier in the power amplifier branch, that is, the second adjustment signal is used to adjust the drain voltage of the power amplifier.
  • the average power and peak power of the input signal are divided into 15-20 power levels, and the first adjustment signal and the second adjustment signal corresponding to each power level are set with corresponding configuration parameters.
  • the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal according to the power level of the different input signals, so that the power amplifier in the power amplifier device can be adjusted from the working state of Class C to the working state of Class AB, similar to continuous change, so that the working state of the power amplifier can also be continuously variable during the change of the input signal of the power amplifier device from the first power to the third power.
  • the first control unit 10 adjusts the second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal according to the power level of the different input signals, so that the power amplifier can work in the optimal efficiency range based on the received input signal.
  • the power amplifier device When the power amplifier in the power amplifier device is in the Class C working state, the power amplifier device is used to process the signal in the input signal that has current conduction for less than half of the input signal cycle (i.e., the conduction angle is less than half of the cycle). At this time, the efficiency of the power amplifier device is relatively high, but the output current of the power amplifier in the circuit is prone to nonlinear distortion.
  • the power amplifier device When the power amplifier in the power amplifier device is in the AB class working state, the power amplifier device is used to process the signal when the current conduction in the input signal is greater than half a cycle of the input signal and less than one cycle of the input signal (the conduction angle is more than half a cycle and less than one cycle). At this time, the amplification efficiency of the power amplifier device is high, and at the same time, the power amplifier is in a slightly conductive state when static, so the crossover distortion can be well improved.
  • the power amplification device can adjust the power amplifier from the first type of working state to the second type of working state based on the control signal, the first adjustment signal and the second adjustment signal generated by the input signal, and make the working state of the power amplifier continuously adjusted between the first type of working state and the second type of working state.
  • the adjustment method of the power amplifier device in this embodiment receives the input signal of the power amplifier device through the first control unit 10, and generates a control signal, a first adjustment signal and a second adjustment signal based on the matching result of the input signal and the preset table; the first control unit 10 controls the switch unit 30 to select the corresponding power amplifier branch from the first power amplifier branch 40 and the second power amplifier branch 50 through the control signal; the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, so that the working state of the power amplifier can be continuously adjusted between the first type of working state and the second type of working state.
  • the first parameter of the power amplifier is adjusted, so that the power amplifier in the power amplifier device can be adjusted from the working state of Class C to the working state of Class AB, similar to continuous change.
  • FIG. 3 is a flow chart of a second embodiment of the adjustment method of the power amplifier device of the present application. As shown in FIG. 3 , the adjustment method of the present application further includes the following steps:
  • S201 Receive an output signal, determine whether the power amplifier device operates normally based on a comparison between the input signal and the output signal, and update a first adjustment signal and a second adjustment signal.
  • the first control unit 10 receives the output signal generated by the power amplifier device based on the input signal amplification through the output detection unit 70, compares the input signal and the output signal of the power amplifier device, determines whether the power amplifier device is operating normally based on the comparison result of the input signal and the output signal, and updates the generated first adjustment signal and the second adjustment signal to adjust the power amplifier in the selected power amplifier branch.
  • the first control unit 10 determines that the power amplifier device is operating abnormally, and the first control unit 10 adjusts the power amplifier in the selected power amplifier branch through a first adjustment signal, and controls the second control unit 20 to adjust the power amplifier in the selected power amplifier branch through a second adjustment signal, so that the power amplifier in the selected power amplifier branch stops working.
  • the first control unit 10 controls the power amplifying device to adjust the power amplifier in the selected power amplifier branch to adjust the generated output signal.
  • the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifier branch through the first adjustment signal, and controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch through the second adjustment signal, and amplifies the input signal through the adjusted power amplifier to generate an output signal, so that the input signal and the adjusted output signal are exponentially close.
  • the first control unit 10 determines the average power, peak power, peak-to-average ratio and error vector amplitude of the input signal and the output signal of the power amplifier device based on the received input signal and the output signal. At this time, the peak-to-average ratio of the input signal and the output signal is relatively small, the power backoff is large, and the bandwidth is large.
  • the first control unit 10 calls the setting parameters of the last first adjustment signal and the second adjustment signal based on the input signal, and updates the first adjustment signal and the second adjustment signal based on the comparison result of the input signal and the output signal.
  • the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifier branch through the updated first adjustment signal, and controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch through the updated second adjustment signal, so that the input signal and the output signal index approach each other, reduce the power back-off of the power amplifier, and make the power amplifier device enter the saturation state in advance, thereby improving the efficiency of the power amplifier.
  • the first control unit 10 adjusts the power amplifier in the selected power amplifier branch, it receives the adjusted input signal and output signal until the first control unit 10 detects that the input signal and the output signal are within the preset range, and the first control unit 10 stops generating the first adjustment signal and the second adjustment signal.
  • the first control unit 10 determines the average power, peak power, peak-to-average ratio and error vector amplitude of the input signal and the output signal of the power amplifier device based on the received input signal and the output signal. At this time, the peak-to-average ratio of the input signal and the output signal is large, and the saturation power and bandwidth are large.
  • the first control unit 10 calls the setting parameters of the last first adjustment signal and the second adjustment signal based on the input signal, and updates the first adjustment signal and the second adjustment signal based on the comparison result of the input signal and the output signal.
  • the first control unit 10 adjusts the first parameter of the power amplifier of one of the selected power amplifier branches through the updated first adjustment signal, and controls the second control unit 20 to adjust the second parameter of the corresponding power amplifier in the selected power amplifier branch through the updated second adjustment signal, so that the input signal and the output signal index approach each other, so that the power amplifier device enters the saturation state in advance, thereby improving the efficiency of the power amplifier.
  • the first control unit 10 adjusts the power amplifier in the selected power amplifier branch, it receives the adjusted input signal and output signal until the first control unit 10 detects that the input signal and the output signal are within the preset range, and the first control unit 10 stops generating the first adjustment signal and the second adjustment signal.
  • the adjustment method of the power amplifier device in this embodiment receives the output signal generated by the power amplifier device based on the input signal amplification through the first control unit 10, compares the input signal with the output signal, determines whether the power amplifier device is working normally, and updates the first adjustment signal and the second adjustment signal; when the first control unit 10 determines that the power amplifier device is working abnormally, the first control unit 10 controls the power amplifier in the selected power amplifier branch to stop working; when the first control unit 10 determines that the power amplifier device is working normally, the first control unit 10 adjusts the power amplifier in the selected power amplifier branch to adjust the generated output signal.
  • the gate voltage and the drain voltage of the power amplifier are adjusted according to the detection result, and the input signal is amplified by the adjusted power amplifier to generate an output signal, and at the same time, the power amplifier is made to enter the saturation region in advance based on the received input signal, thereby improving the working efficiency of the power amplifier device.
  • Fig. 1 is a circuit diagram of a first embodiment of a power amplifier device of the present application.
  • the power amplifier device of the present embodiment includes a first control unit 10, a second control unit 20, a switch unit 30, a first power amplifier branch 40 and a second power amplifier branch 50.
  • the power amplifier device of this embodiment further includes an input detection unit 60 and an output detection unit 70, wherein the input detection unit 60 is used to detect the input signal of the power amplifier device, and the output detection unit 70 is used to detect the output signal of the power amplifier device.
  • the input detection unit 60 and the output detection unit 70 provide the first control unit 10 with accurate detection results of the input signal and the output signal, thereby ensuring the accuracy of the first control unit 10 in adjusting the switch unit 30 and the corresponding power amplifier branch.
  • the first power amplifier branch 40 includes a first input matching unit 41, a first power amplifier 42, and a first output matching unit 43 connected in series.
  • the first input matching unit 41 and the first output matching unit 43 are used to improve the matching of the input signal and the output signal of the first power amplifier branch 40, improve the output power and efficiency, and ensure that the first power amplifier branch 40 can maintain good input signal matching when the gate voltage of the first power amplifier 42 changes during the adjustment process.
  • the second power amplifier branch 50 includes a second input matching unit 51, a second power amplifier 52, and a second output matching unit 53 connected in series.
  • the second input matching unit 51 and the second output matching unit 53 are used to improve the matching of the input signal and the output signal of the second power amplifier branch 50, improve the output power and efficiency, and ensure that the second power amplifier branch 50 can maintain good input signal matching when the gate voltage of the second power amplifier 52 changes during the adjustment process.
  • the first control unit 10 is connected to the input detection unit 60, receives the input signal of the power amplifier device through the input detection unit 60, and generates the control signal, the first adjustment signal and the second adjustment signal based on the input signal.
  • the switch unit 30 is connected to the first control unit 10, the first input matching unit 41 in the first power amplifier branch 40 and the second input matching unit 51 in the second power amplifier branch 50.
  • the first control unit 10 controls the switch unit 30 to select the input signal received by the corresponding power amplifier branch input from the first power amplifier branch 40 and the second power amplifier branch 50 through the control signal.
  • the first control unit 10 is also connected to the first power amplifier 42 in the first power amplifier branch 40 and the second power amplifier 52 in the second power amplifier branch 50.
  • the first control unit 10 adjusts the gate voltage of the power amplifier in the selected power amplifier branch through the first adjustment signal.
  • the second control unit 20 is connected to the first control unit 10, the first power amplifier 42 in the first power amplifier branch 40 and the second power amplifier 52 in the second power amplifier branch 50.
  • the first control unit 10 controls the second control unit 20 to adjust the drain voltage of the power amplifier in the selected power amplifier branch through a second adjustment signal.
  • the power amplification device of this embodiment further includes a phase unit 80 and an impedance transformation unit 90.
  • a first end of the phase unit 80 is connected to the output end of the first power amplifier branch 40, and a second end of the phase unit 80 is connected to the output end of the second power amplifier branch 50.
  • a first end of the impedance transformation unit 90 is connected to the output end of the second power amplifier branch 50, and a second end of the impedance transformation unit 90 is connected to the output detection unit 70.
  • the phase unit 80 and the impedance transformation unit 90 play a role in impedance adjustment and transformation when the output signals of the first power amplifier branch 40 and the second power amplifier branch 50 are combined.
  • the power amplifier branch selected in the power amplifier device of this embodiment amplifies the input signal and combines the output signal of the power amplifier branch selected by the phase unit 80 and the impedance transformation unit 90, and the output detection unit 70 obtains the output signal of the power amplifier device.
  • the first control unit 10 receives the output signal of the power amplifier device, compares the input signal with the output signal, determines whether the power amplifier device is working normally, and adjusts the generated first adjustment signal and second adjustment signal. If the first control unit 10 determines that the power amplifier device is working abnormally, the first control unit 10 controls the power amplifier in the selected power amplifier branch to stop working; if the first control unit 10 determines that the power amplifier device is working normally, the first control unit 10 adjusts the input signal and output signal of the power amplifier device.
  • the power amplifier device of this embodiment includes a first control unit 10, a second control unit 20, a switch unit 30, a first power amplifier branch 40 and a second power amplifier branch 50, wherein: the first control unit 10 receives an input signal of the power amplifier device, and generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result between the input signal and a preset table; the second control unit 20 is connected to the first control unit 10, the first power amplifier branch 40 and the second power amplifier branch 50; the switch unit 30 is connected to the first control unit 10, and the switch unit 30 is connected to the input end of the first power amplifier branch 40 and the input end of the second power amplifier branch 50; the first control unit 10 is used to control the switch unit 30 to select a corresponding power amplifier branch from the first power amplifier branch 40 and the second power amplifier branch 50 through a control signal, adjust a first parameter of the power amplifier in the selected power amplifier branch through a first adjustment signal, and control the second control unit 20 to adjust a second parameter of the power amplifier in the
  • the input signal and output signal of the power amplifier device are detected to control the switch unit 30 to select the corresponding power amplifier branch, and the working state of the power amplifier is continuously adjusted through the first adjustment signal and the second adjustment signal.
  • the power amplifier enters the saturation zone in advance based on the received input signal, thereby improving the working efficiency of the power amplifier device.
  • the switch unit 30 of the power amplifier device of the present embodiment includes a first microstrip line 301, a second microstrip line 302, a third microstrip line 303, a fourth microstrip line 304, a fifth microstrip line 305, a sixth microstrip line 306, a seventh microstrip line 307, a phase delay line 308, a first photodiode 309, a second photodiode 310, a third photodiode 311, a fourth photodiode 312, a fifth photodiode 313 and a sixth photodiode 314.
  • the first end of the first microstrip line 301 receives an input signal
  • the second end of the first microstrip line 301 is respectively connected to the first ends of the second microstrip line 302 and the fifth microstrip line 305.
  • the second microstrip line 302, the first photodiode 309, the third microstrip line 303 and the fourth microstrip line 304 are connected in series
  • the control signal is received between the second microstrip line 302 and the first photodiode 309
  • the second end of the fourth microstrip line 304 outputs the input signal.
  • the fifth microstrip line 305, the second photodiode 310, the sixth microstrip line 306 and the seventh microstrip line 307 are connected in series, the control signal is received between the fifth microstrip line 305 and the second photodiode 310, and the second end of the seventh microstrip line 307 outputs the input signal.
  • the input end of the third photodiode 311 receives a control signal, and the output end of the third photodiode 311 is connected between the third microstrip line 303 and the fourth microstrip line 304.
  • the first end of the phase delay line 308 is connected to the input end of the fourth photodiode 312 to receive the control signal
  • the second end of the phase delay line 308 is connected to the input end of the fifth photodiode 313 to receive the control signal
  • the output end of the fourth photodiode 312 is connected between the third microstrip line 303 and the fourth microstrip line 304
  • the output end of the fifth photodiode 313 is connected between the sixth microstrip line 306 and the seventh microstrip line 307.
  • the input end of the sixth photodiode 314 receives a control signal
  • the output end of the sixth photodiode 314 is connected between the sixth microstrip line 306 and the seventh microstrip line 307.
  • This embodiment utilizes the impedance characteristics of the photodiode in the switch unit 30 that are approximately turned on or off under the DC forward-reverse bias, and the first control unit 10 realizes the on-off control of the switch path corresponding to the switch unit 30 based on the control signal.
  • the photodiode presents a linear resistance to the RF signal, and the resistance is determined by the DC bias.
  • the first control unit 10 controls the photodiode to be forward biased based on the control signal, the resistance of the photodiode is small, close to a short circuit.
  • the switch path where the photodiode is located is turned on, and the input signal is output to the corresponding power amplifier branch; when the first control unit 10 controls the photodiode to be reverse biased based on the control signal, the resistance of the photodiode is large, close to an open circuit. At this time, the switch path where the photodiode is located is disconnected, and the input signal is stopped from being output to the corresponding power amplifier branch.
  • phase delay line 308 in the switch unit 30 can be set at the input end of the switch unit 30 or the power amplifier branch according to the actual use of the power amplifier device, and is used to set the delay amount and adjust the phase difference between the first power amplifier branch 40 and the second power amplifier branch 50 of the power amplifier device, so that the power and efficiency of the output signal output by the power amplifier device are maximized.
  • the microstrip line in the switch unit 30 is a microwave transmission line composed of a single conductor strip on a dielectric substrate, which is suitable for making a planar structure transmission line of a microwave integrated circuit.
  • the switch unit 30 provided in this embodiment also includes circuit components such as power supply inductors, DC blocking capacitors and matching capacitors, which are omitted for description.
  • the switch unit 30 of this embodiment uses microstrip lines and photodiodes to input input signals to corresponding power amplifier branches.
  • the switch unit 30 may also use inductors, capacitors, loads and photodiodes.
  • the switch unit 30 may also be a switch chip.
  • the switch unit 30 of the power amplifier device of the present application includes a first microstrip line 301, a second microstrip line 302, a third microstrip line 303, a fourth microstrip line 304, a fifth microstrip line 305, a sixth microstrip line 306, a seventh microstrip line 307, a phase delay line 308, a first photodiode 309, a second photodiode 310, a third photodiode 311, a fourth photodiode 312, a fifth photodiode 313 and a sixth photodiode 314.
  • the power amplifier device selects a single input or a dual input through the switch unit 30, the input signal enters different working modes of the power amplifier, and ensures that the phase of the signal is consistent during the output combining process.

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Abstract

功率放大装置的调节方法包括:第一控制单元接收功率放大装置的输入信号,产生控制信号、第一调整信号和第二调整信号;第一控制单元通过控制信号控制开关单元从第一功放支路和第二功放支路中选择对应的功放支路,通过第一调整信号对功率放大器的第一参数进行调节,并通过第二调整信号控制第二控制单元对功率放大器的第二参数进行调节,以使功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。通过上述方式,通过第一调整信号和第二调整信号实现连续调整功率放大器的工作状态,同时使得功率放大装置提前进入饱和区,提高其工作效率。

Description

功率放大装置的调节方法以及功率放大装置 【技术领域】
本申请涉及功率放大器领域,特别是涉及一种功率放大装置的调节方法以及功率放大装置。
【背景技术】
随着无线通信技术的发展,不同的调制方式导致调制信号存在不同的峰均比,且功率放大装置在不同的应用场景中存在不同的载波数量、滤波器和合路器的应用数量,使得同一功放在不同应用场景中输出功率、峰值功率、线性要求、工作带宽等要求存在差异。
现有技术中功放调节装置多用于解决一种峰均比功放输入情况下的功放调节。传统的通过采用AB平衡合路的方式、调节漏级电压的方式实现效率的最大化,对低峰均比的信号优势比较明显,功放线性较好,但是对于高峰均比的信号或者功率回退较多的时候,优势则不明显,且采用两个功放支路在输入为小功率信号时能量损耗较大。在多载波、超线性功放的情况下通过传统的功率放大器由于功放存在固定的输出功率等级,功率放大器只对特定的输出功率效率可以达到最优,无法实现输入功放的工作状态连续可变。
【发明内容】
本申请提供一种功率放大装置的调节方法以及功率放大装置,以解决现有技术中功率放大器无法实现功放的工作状态连续可变。
为解决上述问题,本申请提供一种功率放大装置的调节方法,应用于功率放大器,所述功率放大装置包括第一控制单元、第二控制单元、开关单元、第一功放支路和第二功放支路,所述调节方法包括:
所述第一控制单元接收所述功率放大装置的输入信号,基于所述输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号;
所述第一控制单元通过所述控制信号控制所述开关单元从所述第一功放支路和所述第二功放支路中选择对应的功放支路,通过所述第一调整信 号对选择的功放支路中功率放大器的第一参数进行调节,通过所述第二调整信号控制所述第二控制单元对选择的功放支路中功率放大器的第二参数进行调节,以使所述功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。
进一步地,所述基于所述输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号的步骤包括:所述第一控制单元基于接收的所述输入信号与所述预设表匹配得到所述输入信号对应的功率等级,并根据所述输入信号的所述功率等级与所述预设表匹配得到匹配结果,基于所述匹配结果产生所述控制信号、所述第一调整信号和所述第二调整信号;其中,所述预设表存储与所述输入信号关联的所述功率等级,同时所述预设表存储与所述功率等级对应的所述控制信号、所述第一调整信号和所述第二调整信号的配置参数。
进一步地,所述第一控制单元基于所述输入信号与所述预设表匹配,当所述第一控制单元检测到所述输入信号位于第一功率的所述功率等级范围,所述第一控制单元基于所述输入信号产生所述控制信号、所述第一调整信号和所述第二调整信号,通过所述控制信号控制所述开关单元从所述第一功放支路和所述第二功放支路中选择一条对应的功放支路输入所述输入信号;所述第一控制单元基于所述输入信号与所述预设表匹配,当所述第一控制单元检测到所述输入信号位于第二功率/第三功率的所述功率等级范围,所述第一控制单元基于所述输入信号产生所述控制信号、所述第一调整信号和所述第二调整信号,通过所述控制信号控制所述开关单元同时输入所述输入信号至所述第一功放支路和所述第二功放支路。
进一步地,当所述第一控制单元检测到所述输入信号位于所述第一功率的所述功率等级范围时,所述第一控制单元通过所述第一调整信号调节选择的功放支路中功率放大器的第一参数,通过所述第二调整信号控制所述第二控制单元调节选择的功放支路中功率放大器的第二参数,进而配置选择的功放支路中功率放大器进入第一类工作状态;当所述第一控制单元检测到所述输入信号位于所述第二功率/所述第三功率的所述功率等级范围时,所述第一控制单元通过所述第一调整信号调节选择的功放支路中功率 放大器的第一参数,通过所述第二调整信号控制所述第二控制单元调节选择的功放支路中功率放大器的第二参数,进而配置选择的功放支路中功率放大器进入第二类工作状态。
为解决上述问题,本申请还提供一种功率放大装置,包括第一控制单元、第二控制单元、开关单元、第一功放支路和第二功放支路,其中:所述第一控制单元接收所述功率放大装置的输入信号,基于所述输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号,所述第二控制单元与所述第一控制单元、所述第一功放支路和所述第二功放支路连接,所述开关单元与所述第一控制单元连接,且所述开关单元与所述第一功放支路的输入端和所述第二功放支路的输入端连接;所述第一控制单元用于通过所述控制信号控制所述开关单元从所述第一功放支路和所述第二功放支路中选择对应的功放支路,通过所述第一调整信号对选择的功放支路中功率放大器的第一参数进行调节,通过所述第二调整信号控制所述第二控制单元对选择的功放支路中功率放大器的第二参数进行调节,以使所述功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。
本申请提供一种功率放大装置的调节方法和功率放大装置,功率放大装置包括第一控制单元、第二控制单元、开关单元、第一功放支路和第二功放支路,调节方法包括:第一控制单元接收功率放大装置的输入信号,基于输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号;第一控制单元通过控制信号控制开关单元从第一功放支路和第二功放支路中选择对应的功放支路,通过第一调整信号对选择的功放支路中功率放大器的第一参数进行调节,并通过第二调整信号控制第二控制单元对选择的功放支路中功率放大器的第二参数进行调节,以使功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。通过本申请的方法,通过控制开关单元选择对应的功放支路,并对选择的功放支路中功率放大器进行调节,实现连续调整功率放大器的工作状态。
【附图说明】
图1是本申请功率放大装置第一实施例的电路示意图;
图2是本申请功率放大装置的调节方法第一实施例的流程示意图;
图3是本申请功率放大装置的调节方法第二实施例的流程示意图;
图4是本申请功率放大装置第二实施例的电路示意图。
【具体实施方式】
为使本申请的上述目的、特征和优点能够更为明显易懂,下面结合附图,对本申请的具体实施方式做详细的说明。可以理解的是,此处所描述的具体实施例仅用于解释本申请,而非对本申请的限定。另外还需要说明的是,为了便于描述,附图中仅示出了与本申请相关的部分而非全部结构。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本申请保护的范围。
本申请中的术语“第一”、“第二”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是,本文所描述的实施例可以与其它实施例相结合。
请参阅图1-2,图1是本申请功率放大装置第一实施例的电路示意图;图2是本申请功率放大装置的调节方法第一实施例的流程示意图。本实施例的功率放大装置包括第一控制单元10、第二控制单元20、开关单元30、第一功放支路40和第二功放支路50。
具体地,第一控制单元10接收功率放大装置的输入信号,基于输入信号产生控制信号、第一调整信号和第二调整信号,第二控制单元20与第一 控制单元10、第一功放支路40和第二功放支路50连接,开关单元30与第一控制单元10连接,且开关单元30与第一功放支路40的输入端和第二功放支路50的输入端连接。
其中,第一控制单元10输出控制信号至控制开关单元30,以通过控制信号控制开关单元30从第一功放支路40和第二功放支路50中选择对应的功放支路。第一控制单元10输出第一调整信号至选择的功放支路中的功率放大器,以通过第一调整信号对选择的功放支路中功率放大器的第一参数进行调节。第一控制单元10同时输出第二调整信号至第二控制单元20,第二控制单元20基于第二调整信号控制选择的功放支路中的功率放大器,通过第二调整信号第一控制单元10能够通过控制第二控制单元20以对选择的功放支路中功率放大器的第二参数进行调节,以使功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。
以下详细描述功率放大装置的调节过程,请参阅图2,图2是本申请功率放大装置的调节方法第一实施例的流程示意图,如图2所示,本申请的调节方法包括以下步骤:
S101:第一控制单元10接收功率放大装置的输入信号,基于输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号。
具体地,第一控制单元10通过输入检波单元60接收功率放大装置的输入信号,第一控制单元10基于接收的输入信号与预设表匹配,根据输入信号对应的功率等级与预设表匹配产生控制信号、第一调整信号和第二调整信号。
需要说明的是,预设表存储与输入信号关联的功率等级,基于输入信号的平均功率和峰值功率将输入信号分为15-20个功率等级,每个功率等级对应的控制信号、第一调整信号和第二调整信号设置相应的配置参数,同时输入信号对应的多个功率等级还分为第一功率范围的功率等级、第二功率范围的功率等级和第三功率范围的功率等级。在匹配前预设表需根据使用的功率放大装置进行相应的校准,写入第一控制单元10,作为第一控制单元10的匹配依据。
其中,输入信号位于第一功率的功率等级范围对应输入信号为小功率 的情况,此时输入信号的峰均比较小,平均功率小;输入信号位于第二功率/第三功率的功率等级范围对应输入信号为中功率/大功率的情况,此时输入信号的峰均比较大,平均功率大。输入信号的峰值功率跟输入信号总的平均功率的比值为峰均比。
S102:第一控制单元10通过控制信号控制开关单元30从第一功放支路40和第二功放支路50中选择对应的功放支路。
具体地,第一控制单元10基于输入信号与预设表的匹配结果产生的控制信号控制开关单元30从第一功放支路40和第二功放支路50中选择对应的功放支路输入接收的输入信号。
当第一控制单元10检测到输入信号位于第一功率的功率等级范围,此时输入检波单元60检测到的输入信号的峰均比较小,输入信号的平均功率小。第一控制单元10基于输入信号产生的控制信号设置开关单元30相应的配置参数,控制开关单元30从第一功放支路40和第二功放支路50中选择一条对应的功放支路导通,输入接收到的输入信号,使得输入信号为第一功率时功率放大装置采用单路功放支路输入。
当第一控制单元10检测到输入信号位于第二功率/第三功率的功率等级范围,此时输入检波单元60检测到的输入信号的峰均比较大,平均功率大。第一控制单元10基于输入信号产生的控制信号设置开关单元30相应的配置参数,控制开关单元30同时输入接收到的输入信号至第一功放支路40和第二功放支路50,使得输入信号为第二功率/第三功率时功率放大装置采用两路功放支路同时输入。
需要说明的是,第一功放支路40与第二功放支路50的电路中电子元器件的配置相同,本申请的功率放大装置通过将第一功放支路40/第二功放支路50与相位装置连接,以使第一功放支路40和第二功放支路50能够分别对处于正半周和负半周的输入信号进行放大。
可选地,当第一功放支路40用于对处于正半周的输入信号进行处理,第二功放支路50用于对处于负半周的输入信号进行处理时:
当输入信号位于第一功率的功率等级范围,且输入信号为正半周的输入信号,第一控制单元10基于输入信号产生的控制信号设置开关单元30 相应的配置参数,以选择第一功放支路40导通。
当输入信号位于第一功率的功率等级范围,且输入信号为负半周的输入信号,第一控制单元10基于输入信号产生的控制信号设置开关单元30相应的配置参数,以选择第二功放支路50导通。
当输入信号位于第二功率/第三功率的功率等级范围,此时输入信号包括正半周和负半周的输入信号,第一控制单元10基于输入信号产生的控制信号设置开关单元30相应的配置参数,以选择第一功放支路40和第二功放支路50同时导通。
在其他实施例中,基于相位装置连接的功放支路不同,功率放大装置还可以设置为第一功放支路40对处于负半周的输入信号进行处理,第二功放支路50对处于正半周的输入信号进行处理。
S103:第一控制单元10通过第一调整信号对选择的功放支路中功率放大器中的第一参数进行调节,通过第二调整信号控制第二控制单元20对选择的功放支路中功率放大器的第二参数进行调节。
具体地,第一控制单元10基于输入信号与预设表的匹配结果产生的第一调整信号对选择的功放支路中功率放大器的第一参数进行调节,基于输入信号与预设表的匹配结果产生的第二调整信号控制第二控制单元20对选择的功放支路中功率放大器的第二参数进行调节。
当第一控制单元10检测到输入信号位于第一功率的功率等级范围,第一控制单元10通过第一调整信号调节选择的功放支路中功率放大器的第一参数,通过第二调整信号控制第二控制单元20调节选择的功放支路中功率放大器的第二参数,使得功率放大器处于C类的工作状态,即第一类工作状态。
当第一控制单元10检测到输入信号位于第二功率/第三功率的功率等级范围,第一控制单元10通过第一调整信号调节选择的功放支路中功率放大器的第一参数,通过第二调整信号控制第二控制单元20调节选择的功放支路中功率放大器的第二参数,使得功率放大器处于AB类的工作状态,即第二类工作状态。
需要说明的是,第一参数为功率放大器的栅极电压,第一控制单元10 与功放支路中功率放大器的栅极连接,即第一调整信号用于调节功率放大器的栅极电压;第二参数为功率放大器的漏极电压,第二控制单元20与功放支路中功率放大器的漏极连接,即第二调整信号用于调节功率放大器的漏极电压。
其中,基于输入信号的平均功率和峰值功率分为15-20个功率等级,每个功率等级对应的第一调整信号和第二调整信号设置有相应的配置参数。第一控制单元10根据不同的输入信号的功率等级,通过第一调整信号调节选择的功放支路中功率放大器的第一参数,使得功率放大装置中功率放大器可以从C类的工作状态调整到AB类的工作状态,类似于连续变化,从而使得功率放大装置的输入信号从第一功率到第三功率的变化过程中功率放大器的工作状态也能连续可变。同时第一控制单元10根据不同的输入信号的功率等级,通过第二调整信号调节选择的功放支路中功率放大器的第二参数,使得功率放大器基于接收的输入信号能够工作于最佳效率区间。
功率放大装置中的功率放大器处于C类的工作状态时,功率放大装置用于对输入信号中小于半个输入信号周期(即导通角小于半个周期)有电流导通的信号进行处理。此时功率放大装置的效率较高,但是该电路中功率放大器的输出电流易存在非线性失真。
功率放大装置中的功率放大器处于AB类的工作状态时,功率放大装置用于对输入信号中电流导通大于输入信号的半个周期而小于输入信号的一个周期时(导通角在半周期以上一周期以下)的信号进行处理。此时功率放大装置的放大效率高,且同时功率放大器在静态时处于微导通的状态,因此可以很好地改善交越失真。
因此通过上述方式,功率放大装置能够基于输入信号产生的控制信号、第一调整信号和第二调整信号使得功率放大器从第一类工作状态调整到第二类工作状态,并使得功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。
区别于现有技术,本实施例功率放大装置的调节方法通过第一控制单元10接收功率放大装置的输入信号,基于输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号;第一控制单元10通过控制 信号控制开关单元30从第一功放支路40和第二功放支路50中选择对应的功放支路;第一控制单元10通过第一调整信号对选择的功放支路中功率放大器的第一参数进行调节,通过第二调整信号控制第二控制单元20对选择的功放支路中功率放大器的第二参数进行调节,以使功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。通过上述方式,通过检测功率放大装置的输入信号控制开关单元30选择对应的功放支路,对功率放大器的第一参数进行调节,使得功率放大装置中功率放大器可以从C类的工作状态调整到AB类的工作状态,类似于连续变化。
请参阅图3,图3是本申请功率放大装置的调节方法第二实施例的流程示意图,如图3所示,本申请的调节方法还包括以下步骤:
S201:接收输出信号,基于输入信号和输出信号进行比较,判断功率放大装置是否正常工作,更新第一调整信号和第二调整信号。
具体地,第一控制单元10通过输出检波单元70接收功率放大装置基于输入信号放大产生的输出信号,将功率放大装置的输入信号和输出信号进行比较,基于输入信号和输出信号的比较结果判断功率放大装置是否正常工作,更新产生的第一调整信号和第二调整信号,以对选择的功放支路中的功率放大器进行调节。
S202:在判断到功率放大装置工作异常时,第一控制单元10控制选择的功放支路中的功率放大器停止工作。
具体地,当功率放大装置的输入信号和输出信号差别过大,第一控制单元10判断到功率放大装置工作异常,第一控制单元10通过第一调整信号对选择的功放支路中的功率放大器进行调节,通过第二调整信号控制第二控制单元20对选择的功放支路中的功率放大器进行调节,以使选择的功放支路中的功率放大器停止工作。
S203:在判断到功率放大装置正常工作时,第一控制单元10控制功率放大装置对选择的功放支路中的功率放大器进行调节,以调节产生的输出信号。
具体地,当功率放大装置的输入信号和输出信号存在一定差别,第一控制单元10判断到功率放大装置正常工作时,第一控制单元10通过第一 调整信号对选择的功放支路中功率放大器的第一参数进行调节,通过第二调整信号控制第二控制单元20对选择的功放支路中功率放大器的第二参数进行调节,通过调节后的功率放大器对输入信号进行放大,以产生输出信号,从而使得输入信号和调节后的输出信号指数趋近。
当输入信号位于第一功率的功率等级范围,第一控制单元10基于接收的输入信号和输出信号确定功率放大装置输入信号和输出信号的平均功率、峰值功率、峰均比和误差向量幅度,此时输入信号和输出信号的峰均比较小,功率回退较多,带宽较大。第一控制单元10基于输入信号调用上次第一调整信号和第二调整信号的设置参数,基于输入信号和输出信号的比较结果更新第一调整信号和第二调整信号。
第一控制单元10通过更新后的第一调整信号调节选择的功放支路中功率放大器的第一参数,通过更新后的第二调整信号控制第二控制单元20调节选择的功放支路中功率放大器的第二参数,使得输入信号和输出信号指数趋近,降低功率放大器的功率回退,使功率放大装置提前进入饱和状态从而提高功率放大器的效率。第一控制单元10对选择的功放支路中的功率放大器调节后接收调节后的输入信号和输出信号,直到第一控制单元10检测到输入信号和输出信号处于预设范围内,第一控制单元10停止产生第一调整信号和第二调整信号。
当输入信号位于第二功率/第三功率的功率等级范围,第一控制单元10基于接收的输入信号和输出信号确定功率放大装置输入信号和输出信号的平均功率、峰值功率、峰均比和误差向量幅度,此时输入信号和输出信号的峰均比较大,饱和功率和带宽较大。第一控制单元10基于输入信号调用上次第一调整信号和第二调整信号的设置参数,基于输入信号和输出信号的比较结果更新第一调整信号和第二调整信号。
第一控制单元10通过更新后的第一调整信号对选择的功放支路中其中一条功放支路的功率放大器的第一参数进行调节,通过更新后的第二调整信号控制第二控制单元20对选择的功放支路中的对应的功率放大器的第二参数进行调节,使得输入信号和输出信号指数趋近,使功率放大装置提前进入饱和状态从而提高功率放大器的效率。第一控制单元10对选择的功放 支路中的功率放大器调节后接收调节后的输入信号和输出信号,直到第一控制单元10检测到输入信号和输出信号处于预设范围内,第一控制单元10停止产生第一调整信号和第二调整信号。
区别于现有技术,本实施例功率放大装置的调节方法通过第一控制单元10接收功率放大装置基于所述输入信号放大产生的输出信号,基于输入信号和输出信号进行比较,判断功率放大装置是否正常工作,更新第一调整信号和第二调整信号;在第一控制单元10判断到功率放大装置工作异常时,第一控制单元10控制选择的功放支路中的功率放大器停止工作;在第一控制单元10判断到功率放大装置正常工作时,第一控制单元10对选择的功放支路中的功率放大器进行调节,以调节产生的所述输出信号。通过上述方式,基于对功率放大装置的输入信号和输出信号进行检测,根据检测结果对功率放大器的栅极电压和漏极电压进行调节,通过调节后的功率放大器对输入信号进行放大,以产生输出信号,同时使得功率放大器基于接收的输入信号提前进入饱和区,从而提高功率放大装置的工作效率。
请参阅图1,图1是本申请功率放大装置第一实施例的电路示意图。如图1所示,本实施例的功率放大装置包括第一控制单元10、第二控制单元20、开关单元30、第一功放支路40和第二功放支路50。
可选地,本实施例的功率放大装置还包括输入检波单元60和输出检波单元70,输入检波单元60用于对功率放大装置的输入信号进行检测,输出检波单元70用于对功率放大装置的输出信号进行检测。输入检波单元60和输出检波单元70为第一控制单元10提供了准确的输入信号和输出信号的检测结果,保证了第一控制单元10对开关单元30和对应的功放支路进行调节时的准确性。
可选地,第一功放支路40包括串联连接的第一输入匹配单元41、第一功率放大器42和第一输出匹配单元43,第一输入匹配单元41和第一输出匹配单元43用于改善第一功放支路40的输入信号与输出信号匹配,提高输出功率和效率,保证调节过程中第一功放支路40在第一功率放大器42的栅极电压变化的情况下能保持良好的输入信号匹配。第二功放支路50包括串联连接的第二输入匹配单元51、第二功率放大器52和第二输出匹配单 元53,第二输入匹配单元51和第二输出匹配单元53用于改善第二功放支路50的输入信号与输出信号匹配,提高输出功率和效率,保证调节过程中第二功放支路50在第二功率放大器52的栅极电压变化的情况下能保持良好的输入信号匹配。
具体地,第一控制单元10与输入检波单元60连接,通过输入检波单元60接收功率放大装置的输入信号,基于输入信号产生控制信号、第一调整信号和第二调整信号。开关单元30与第一控制单元10、第一功放支路40中的第一输入匹配单元41和第二功放支路50中第二输入匹配单元51连接,第一控制单元10通过控制信号控制开关单元30从第一功放支路40和第二功放支路50中选择对应的功放支路输入接收的输入信号。
第一控制单元10还与第一功放支路40中的第一功率放大器42和第二功放支路50中的第二功率放大器52连接,第一控制单元10通过第一调整信号对选择的功放支路中功率放大器的栅极电压进行调节。
第二控制单元20与第一控制单元10、第一功放支路40中的第一功率放大器42和第二功放支路50中的第二功率放大器52连接,第一控制单元10通过第二调整信号控制第二控制单元20对选择的功放支路中功率放大器的漏极电压进行调节。
可选地,本实施例的功率放大装置还包括相位单元80和阻抗变换单元90。相位单元80的第一端连接第一功放支路40的输出端,相位单元80的第二端连接第二功放支路50的输出端。阻抗变换单元90的第一端连接第二功放支路50的输出端,阻抗变换单元90的第二端连接输出检波单元70。相位单元80和阻抗变换单元90在第一功放支路40和第二功放支路50的输出信号合路时起到阻抗调节和变换的作用。
进一步地,本实施例功率放大装置中选择的功放支路对输入信号放大并通过相位单元80和阻抗变换单元90相位单元80选择的功放支路的输出信号合路,输出检波单元70得到功率放大装置的输出信号。第一控制单元10接收功率放大装置的输出信号,基于输入信号和输出信号进行比较,判断功率放大装置是否正常工作,调节产生的第一调整信号和第二调整信号。在第一控制单元10判断到功率放大装置工作异常,第一控制单元10控制 选择的功放支路中的功率放大器停止工作;在第一控制单元10判断到功率放大装置正常工作,第一控制单元10调整功率放大装置的输入信号和输出信号。
区别于现有技术,本实施例功率放大装置包括第一控制单元10、第二控制单元20、开关单元30、第一功放支路40和第二功放支路50,其中:第一控制单元10接收功率放大装置的输入信号,基于输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号,第二控制单元20与第一控制单元10、第一功放支路40和第二功放支路50连接,开关单元30与第一控制单元10连接,且开关单元30与第一功放支路40的输入端和第二功放支路50的输入端连接;第一控制单元10用于通过控制信号控制开关单元30从第一功放支路40和第二功放支路50中选择对应的功放支路,通过第一调整信号对选择的功放支路中功率放大器的第一参数进行调节,通过第二调整信号控制第二控制单元20对选择的功放支路中功率放大器的第二参数进行调节,以使所述功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。通过本申请的功率放大装置,通过检测功率放大装置的输入信号和输出信号控制开关单元30选择对应的功放支路,通过第一调整信号和第二调整信号实现连续调整功率放大器的工作状态,同时使得功率放大器基于接收的输入信号提前进入饱和区,从而提高功率放大装置的工作效率。
请参阅图4,图4是本申请功率放大装置第二实施例的电路示意图。如图4所示,本实施例功率放大装置的开关单元30包括第一微带线301、第二微带线302、第三微带线303、第四微带线304、第五微带线305、第六微带线306、第七微带线307、相位延迟线308、第一光电二极管309、第二光电二极管310、第三光电二极管311、第四光电二极管312、第五光电二极管313和第六光电二极管314。
具体地,第一微带线301的第一端接收输入信号,第一微带线301的第二端分别连接第二微带线302和第五微带线305的第一端。第二微带线302、第一光电二极管309、第三微带线303和第四微带线304串联连接,第二微带线302和第一光电二极管309之间接收控制信号,第四微带线304 的第二端输出输入信号。第五微带线305、第二光电二极管310、第六微带线306和第七微带线307串联连接,第五微带线305和第二光电二极管310之间接收控制信号,第七微带线307的第二端输出输入信号。
第三光电二极管311的输入端接收控制信号,第三光电二极管311的输出端连接至第三微带线303和第四微带线304之间。相位延迟线308的第一端连接第四光电二极管312的输入端,接收控制信号,相位延迟线308的第二端连接第五光电二极管313的输入端,接收控制信号,第四光电二极管312的输出端连接至第三微带线303和第四微带线304之间,第五光电二极管313的输出端连接至第六微带线306和第七微带线307之间。第六光电二极管314的输入端接收控制信号,第六光电二极管314的输出端连接至第六微带线306和第七微带线307之间。
本实施例利用开关单元30中光电二极管在直流正-反偏压下呈现近似导通或断开的阻抗特性,第一控制单元10实现了基于控制信号控制开关单元30对应的开关路径的通断。光电二极管对射频信号呈现一个线性电阻,阻值由直流偏置决定。当第一控制单元10基于控制信号控制光电二极管正偏时光电二极管的阻值小,接近于短路,此时光电二极管所处的开关路径导通,输出输入信号至对应的功放支路;当第一控制单元10基于控制信号控制光电二极管反偏时光电二极管的阻值大,接近于断路,此时光电二极管所处的开关路径断开,停止输出输入信号至对应的功放支路。
需要说明的是,开关单元30中的相位延迟线308可以根据功率放大装置的实际使用设置在开关单元30或者功放支路的输入端,用于设置延迟量,调整功率放大装置第一功放支路40和第二功放支路50的相位差,使得功率放大装置输出的输出信号的功率和效率最大。开关单元30中的微带线是由介质基片上的单一导体带构成的微波传输线,适于制作微波集成电路的平面结构传输线。
本实施例所提供的开关单元30还包括供电电感、隔直电容和匹配电容等电路元器件,在此处省略不作描述。且本实施例的开关单元30通过使用微带线和光电二极管以使输入信号输入至对应的功放支路,上述开关单元30还可以使用电感、电容、负载和光电二极管,上述开关单元30也可以为 开关芯片。
本申请功率放大装置的开关单元30包括第一微带线301、第二微带线302、第三微带线303、第四微带线304、第五微带线305、第六微带线306、第七微带线307、相位延迟线308、第一光电二极管309、第二光电二极管310、第三光电二极管311、第四光电二极管312、第五光电二极管313和第六光电二极管314。通过上述方式,基于不同的输入信号功率放大装置通过开关单元30选择单路输入或两路输入,输入信号进入功率放大器不同的工作模式,并保证了输出合路过程中信号的相位一致。
以上所述仅为本申请的实施方式,并非因此限制本申请的专利范围,凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种功率放大装置的调节方法,其特征在于,所述功率放大装置包括第一控制单元、第二控制单元、开关单元、第一功放支路和第二功放支路,所述调节方法包括:
    所述第一控制单元接收所述功率放大装置的输入信号,基于所述输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号;
    所述第一控制单元通过所述控制信号控制所述开关单元从所述第一功放支路和所述第二功放支路中选择对应的功放支路,通过所述第一调整信号对选择的功放支路中功率放大器的第一参数进行调节,并通过所述第二调整信号控制所述第二控制单元对选择的功放支路中功率放大器的第二参数进行调节,以使所述功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。
  2. 根据权利要求1所述的调节方法,其特征在于,所述基于所述输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号的步骤包括:
    所述第一控制单元基于接收的所述输入信号与所述预设表匹配得到所述输入信号对应的功率等级,并根据所述输入信号的所述功率等级与所述预设表匹配得到匹配结果,基于所述匹配结果产生所述控制信号、所述第一调整信号和所述第二调整信号;
    其中,所述预设表存储与所述输入信号关联的所述功率等级,同时所述预设表存储与所述功率等级对应的所述控制信号、所述第一调整信号和所述第二调整信号的配置参数。
  3. 根据权利要求2所述的调节方法,其特征在于,
    所述第一控制单元基于所述输入信号与所述预设表匹配,当所述第一控制单元检测到所述输入信号位于第一功率的所述功率等级范围,所述第一控制单元基于所述输入信号产生所述控制信号、所述第一调整信号和所述第二调整信号,通过所述控制信号控制所述开关单元从所述第一功放支路和所述第二功放支路中选择一条对应的功放支路输入所述输入信号;
    所述第一控制单元基于所述输入信号与所述预设表匹配,当所述第一控制单元检测到所述输入信号位于第二功率/第三功率的所述功率等级范围,所述第一控制单元基于所述输入信号产生所述控制信号、所述第一调整信号和所述第二调整信号,通过所述控制信号控制所述开关单元同时输入所述输入信号至所述第一功放支路和所述第二功放支路。
  4. 根据权利要求3所述的调节方法,其特征在于,
    当所述第一控制单元检测到所述输入信号位于所述第一功率的所述功率等级范围时,所述第一控制单元通过所述第一调整信号调节选择的功放支路中功率放大器的第一参数,通过所述第二调整信号控制所述第二控制单元调节选择的功放支路中功率放大器的第二参数,进而配置选择的功放支路中功率放大器进入第一类工作状态;
    当所述第一控制单元检测到所述输入信号位于所述第二功率/所述第三功率的所述功率等级范围时,所述第一控制单元通过所述第一调整信号调节选择的功放支路中功率放大器的第一参数,通过所述第二调整信号控制所述第二控制单元调节选择的功放支路中功率放大器的第二参数,进而配置选择的功放支路中功率放大器进入第二类工作状态。
  5. 根据权利要求1所述的调节方法,其特征在于,所述调节方法还包括:
    所述第一控制单元接收所述功率放大装置基于所述输入信号放大产生的输出信号,基于所述输入信号和所述输出信号进行比较,判断所述功率放大装置是否正常工作,更新所述第一调整信号和所述第二调整信号。
  6. 根据权利要求4所述的调节方法,其特征在于,
    在所述第一控制单元判断到所述功率放大装置工作异常时,所述第一控制单元控制选择的功放支路中的功率放大器停止工作;
    在所述第一控制单元判断到所述功率放大装置正常工作时,所述第一控制单元对选择的功放支路中的功率放大器进行调节,以调节产生的输出信号。
  7. 一种功率放大装置,其特征在于,所述功率放大装置包括第一控制单元、第二控制单元、开关单元、第一功放支路和第二功放支路,其中:
    所述第一控制单元接收所述功率放大装置的输入信号,基于所述输入信号与预设表的匹配结果,产生控制信号、第一调整信号和第二调整信号,所述第二控制单元与所述第一控制单元、所述第一功放支路和所述第二功放支路连接, 所述开关单元与所述第一控制单元连接,且所述开关单元与所述第一功放支路的输入端和所述第二功放支路的输入端连接;
    所述第一控制单元用于通过所述控制信号控制所述开关单元从所述第一功放支路和所述第二功放支路中选择对应的功放支路,通过所述第一调整信号对选择的功放支路中功率放大器的第一参数进行调节,通过所述第二调整信号控制所述第二控制单元对选择的功放支路中功率放大器的第二参数进行调节,以使所述功率放大器的工作状态可在第一类工作状态和第二类工作状态间连续调整。
  8. 根据权利要求7所述的装置,其特征在于,所述第一功放支路包括串联连接的第一输入匹配单元、第一功率放大器和第一输出匹配单元;所述第二功放支路包括串联连接的第二输入匹配单元、第二功率放大器和第二输出匹配单元。
  9. 根据权利要求7所述的装置,其特征在于,所述装置还包括:
    输入检波单元,与所述第一控制单元连接,用于接收所述功率放大装置的所述输入信号;
    输出检波单元,与所述第一控制单元连接,用于接收所述功率放大装置的输出信号;
    相位单元,所述相位单元的第一端连接所述第一功放支路的输出端,所述相位单元的第二端连接所述第二功放支路的输出端;
    阻抗变换单元,所述阻抗变换单元的第一端连接所述第二功放支路的输出端,所述阻抗变换单元的第二端连接所述输出检波单元。
  10. 根据权利要求7所述的装置,其特征在于,所述开关单元包括第一微带线、第二微带线、第三微带线、第四微带线、第五微带线、第六微带线、第七微带线、相位延迟线、第一光电二极管、第二光电二极管、第三光电二极管、第四光电二极管、第五光电二极管和第六光电二极管,其中:
    所述第一微带线的第一端接收所述输入信号,所述第一微带线的第二端分别连接所述第二微带线和所述第五微带线的第一端;
    所述第二微带线、所述第一光电二极管、所述第三微带线和所述第四微带线串联连接,所述第二微带线和所述第一光电二极管之间接收所述控制信号,所述第四微带线的第二端输出所述输入信号;
    所述第五微带线、所述第二光电二极管、所述第六微带线和所述第七微带线串联连接,所述第五微带线和所述第二光电二极管之间接收所述控制信号,所述第七微带线的第二端输出所述输入信号;
    所述第三光电二极管的输入端接收所述控制信号,所述第三光电二极管的输出端连接至所述第三微带线和所述第四微带线之间;
    所述相位延迟线的第一端连接所述第四光电二极管的输入端,接收所述控制信号,所述相位延迟线的第二端连接所述第五光电二极管的输入端,接收所述控制信号,所述第四光电二极管的输出端连接至所述第三微带线和所述第四微带线之间,所述第五光电二极管的输出端连接至所述第六微带线和所述第七微带线之间;
    所述第六光电二极管的输入端接收所述控制信号,所述第六光电二极管的输出端连接至所述第六微带线和所述第七微带线之间。
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