CN117997281A - Method for adjusting power amplification device and power amplification device - Google Patents
Method for adjusting power amplification device and power amplification device Download PDFInfo
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Abstract
The application relates to the field of power amplifiers, and discloses a power amplification device and an adjusting method thereof. The adjusting method of the power amplifying device comprises the following steps: the first control unit receives an input signal of the power amplifying device and generates a control signal, a first adjustment signal and a second adjustment signal; the first control unit controls the switch unit to select a corresponding power amplification branch from the first power amplification branch and the second power amplification branch through the control signal, adjusts a first parameter of the power amplifier through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier through the second adjusting 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. Through the mode, the working state of the power amplifier is continuously adjusted through the first adjusting signal and the second adjusting signal, and meanwhile, the power amplifying device enters a saturation region in advance, so that the working efficiency of the power amplifying device is improved.
Description
Technical Field
The present application relates to the field of power amplifiers, and in particular, to a method for adjusting a power amplifying device and a power amplifying device.
Background
With the development of wireless communication technology, different modulation modes lead to different peak-to-average ratios of modulation signals, and the power amplification device has different carrier numbers and application numbers of filters and combiners in different application scenes, so that the same power amplifier has different requirements of output power, peak power, linearity requirements, working bandwidth and the like in different application scenes.
The power amplifier adjusting device in the prior art is mainly used for solving the power amplifier adjustment under the condition of peak-to-average power amplifier input. The traditional mode of adopting AB balanced combining way, the mode of adjusting the drain voltage realizes the maximization of efficiency, and is more obvious to the signal advantage of low peak average ratio, and the power amplifier nature is better, but when signal or the power back of peak average ratio is more, the advantage is then unobvious, and adopts two power amplifier branches energy loss is great when the input is low-power signal. Under the condition of multi-carrier and super-linear power amplification, the power amplifier can be optimized only for specific output power efficiency due to the fact that the power amplifier has fixed output power level, and continuous variable working state of the input power amplifier cannot be realized.
Disclosure of Invention
The application provides a power amplification device and an adjusting method thereof, which are used for solving the problem that the power amplifier in the prior art cannot realize continuous and variable working state of the power amplifier.
In order to solve the above problems, the present application provides a method for adjusting a power amplifying device, applied to a power amplifier, the power amplifying device includes a first control unit, a second control unit, a switch unit, a first power amplifying branch and a second power amplifying branch, the adjusting method includes:
The first control unit receives an input signal of the power amplification device and generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result of the input signal and a preset table;
The first control unit controls the switch unit to select a corresponding power amplification branch from the first power amplification branch and the second power amplification branch through the control signal, adjusts a first parameter of a power amplifier in the selected power amplification branch through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting signal, so that the working state of the power amplifier can be continuously adjusted between a first type working state and a second type working state.
Further, the step of generating the control signal, the first adjustment signal and the 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 the received input signal and the preset table in a matching way, obtains a matching result according to the power level of the input signal and the preset table in a matching way, 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, while the preset table stores configuration parameters of the control signal, the first adjustment signal, and the second adjustment signal corresponding to the power level.
Further, the first control unit is matched with the preset table based on the input signal, when the first control unit detects that the input signal is located in the power level range of 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 amplification branch from the first power amplification branch and the second power amplification branch to input the input signal through the control signal; the first control unit is matched with the preset table based on the input signal, when the first control unit detects that the input signal is located in the power class range of the second power/the 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 the switch unit is controlled by the control signal to input the input signal to the first power amplification branch and the second power amplification branch simultaneously.
Further, when the first control unit detects that the input signal is located in the power level range of the first power, the first control unit adjusts a first parameter of a power amplifier in a selected power amplification branch through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting signal, so that the power amplifier in the selected power amplification branch is configured to enter a first type working state; when the first control unit detects that the input signal is located in the power level range of the second power/the third power, the first control unit adjusts a first parameter of a power amplifier in a selected power amplification branch through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting signal, so that the power amplifier in the selected power amplification branch is configured to enter a second class working state.
In order to solve the above problems, the present application further provides a power amplifying device, including a first control unit, a second control unit, a switch unit, a first power amplifying branch and a second power amplifying branch, wherein: the first control unit receives an input signal of the power amplification device, generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result of the input signal and a preset table, wherein the second control unit is connected with the first control unit, the first power amplification branch and the second power amplification branch, the switch unit is connected with the first control unit, and the switch unit is connected with the input end of the first power amplification branch and the input end of the second power amplification branch; the first control unit is used for controlling the switch unit to select a corresponding power amplification branch from the first power amplification branch and the second power amplification branch through the control signal, adjusting a first parameter of a power amplifier in the selected power amplification branch through the first adjusting signal, and controlling the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting 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 application provides a power amplification device and an adjusting method thereof, wherein the power amplification device comprises a first control unit, a second control unit, a switch unit, a first power amplification branch and a second power amplification branch, and the adjusting method comprises the following steps: the first control unit 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 of the input signal and a preset table; the first control unit controls the switch unit to select a corresponding power amplification branch from the first power amplification branch and the second power amplification branch through the control signal, adjusts a first parameter of the power amplifier in the selected power amplification branch through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting 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. By the method, the corresponding power amplifier branch is selected by controlling the switch unit, and the power amplifier in the selected power amplifier branch is regulated, so that the working state of the power amplifier is continuously regulated.
Drawings
FIG. 1 is a schematic circuit diagram of a first embodiment of a power amplifying device of the present application;
FIG. 2 is a flow chart of a first embodiment of a method for adjusting a power amplifying device according to the present application;
FIG. 3 is a flow chart of a second embodiment of a method for adjusting a power amplifying device according to the present application;
fig. 4 is a circuit schematic of a second embodiment of the power amplifying device of the present application.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," and the like in this disclosure are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1-2, fig. 1 is a schematic circuit diagram of a power amplifying device according to a first embodiment of the present application; fig. 2 is a flow chart of a first embodiment of a method for adjusting a power amplifying device according to the present application. The power amplifying device of the present embodiment includes a first control unit 10, a second control unit 20, a switching unit 30, a first power amplifying branch 40 and a second power amplifying branch 50.
Specifically, the first control unit 10 receives an input signal of the power amplifying device, 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 amplifying branch 40 and the second power amplifying branch 50, the switch unit 30 is connected to the first control unit 10, and the switch unit 30 is connected to an input end of the first power amplifying branch 40 and an input end of the second power amplifying branch 50.
The first control unit 10 outputs a control signal to the control switch unit 30, so that the control switch unit 30 selects 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 to adjust the first parameter of the power amplifier in the selected power amplifier branch by the first adjustment signal. The first control unit 10 outputs a second adjustment signal to the second control unit 20 at the same time, and the second control unit 20 controls the power amplifier in the selected power amplifier branch based on the second adjustment signal, through which the first control unit 10 can adjust the second parameter of the power amplifier in the selected power amplifier branch by controlling the second control unit 20, so that the working state of the power amplifier can be continuously adjusted between the first-class working state and the second-class working state.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of a method for adjusting a power amplifying device according to the present application, as shown in fig. 2, the method for adjusting a power amplifying device according to the present application includes the following steps:
S101: 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 of the input signal and a preset table.
Specifically, the first control unit 10 receives an input signal of the power amplifying 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 according to a match of a power level corresponding to the input signal with a preset table based on the received input signal and the preset table.
It should be noted that, the preset table stores power levels associated with the input signal, the input signal is divided into 15-20 power levels based on the average power and the 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, and the plurality of power levels corresponding to the input signal are also divided into the power level of the first power range, the power level of the second power range and the power level of the third power range. Before matching, the preset table needs to be calibrated correspondingly according to the power amplifying device used, and the corresponding calibration is written into the first control unit 10 to serve as a matching basis of the first control unit 10.
The input signal is located in a power class range of the first power and corresponds to a situation that the input signal is low in power, and at the moment, the peak-to-average ratio of the input signal is small, and the average power is small; the power class range of the input signal at the second power/third power corresponds to the case that the input signal is medium power/high power, and at this time, the peak-to-average ratio of the input signal is larger, and the average power is larger. 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.
S102: the first control unit 10 controls the switching 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.
Specifically, the first control unit 10 controls the switching unit 30 to select the corresponding power amplifier branch circuit from the first power amplifier branch circuit 40 and the second power amplifier branch circuit 50 to input the received input signal based on the control signal generated as a result of matching the input signal with the preset table.
When the first control unit 10 detects that the input signal is in 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 smaller, and the average power of the input signal is smaller. The first control unit 10 sets corresponding configuration parameters of the switch unit 30 based on a control signal generated by the input signal, controls the switch unit 30 to select a corresponding power amplification branch from the first power amplification branch 40 and the second power amplification branch 50 to be conducted, and inputs the received input signal, so that the power amplification device adopts a single-path power amplification branch for input when the input signal is the first power.
When the first control unit 10 detects that the input signal is in the power level range of the second power/the third power, the peak-to-average ratio of the input signal detected by the input detection unit 60 is large, and the average power is large. The first control unit 10 sets corresponding configuration parameters of the switch unit 30 based on a control signal generated by the input signal, and controls the switch unit 30 to simultaneously input the received input signal to the first power amplification branch 40 and the second power amplification branch 50, so that the power amplification device adopts two paths of power amplification branches to input simultaneously when the input signal is the second power/the third power.
It should be noted that, the configuration of electronic components in the circuits of the first power amplification branch 40 and the second power amplification branch 50 is the same, and the power amplification device of the present application connects the first power amplification branch 40/the second power amplification branch 50 with the phase device, so that the first power amplification branch 40 and the second power amplification branch 50 can amplify the input signal in the positive half cycle and the negative half cycle respectively.
Optionally, when 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:
When the input signal is in the power class range of the first power and the input signal is the input signal of the positive half cycle, the first control unit 10 sets the corresponding configuration parameters of the switching unit 30 based on the control signal generated by the input signal, so as to select the first power amplifier branch 40 to be turned on.
When the input signal is in the power class range of the first power and the input signal is the input signal of the negative half cycle, the first control unit 10 sets the corresponding configuration parameters of the switching unit 30 based on the control signal generated by the input signal, so as to select the second power amplifier branch 50 to be turned on.
When the input signal is in the power class range of the second power/third power, the input signal includes the input signals of the positive half cycle and the negative half cycle, and the first control unit 10 sets the corresponding configuration parameters of the switching unit 30 based on the control signal generated by the input signal, so as to select the first power amplifier branch 40 and the second power amplifier branch 50 to be turned on simultaneously.
In other embodiments, the power amplifying device may be further configured such that the first power amplifying branch 40 processes the input signal in the negative half cycle and the second power amplifying branch 50 processes the input signal in the positive half cycle, based on the difference between the power amplifying branches connected by the phase device.
S103: the first control unit 10 adjusts a first parameter of the power amplifier in the selected power amplifier branch by means of the 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 by means of the second adjustment signal.
Specifically, the first control unit 10 adjusts a first parameter of the power amplifier in the selected power amplifier branch based on a first adjustment signal generated by a matching result of the input signal and the preset table, and controls the second control unit 20 to adjust a second parameter of the power amplifier in the selected power amplifier branch based on a second adjustment signal generated by a matching result of the input signal and the preset table.
When the first control unit 10 detects that the input signal is located in the power class 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 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 the working state of class C, namely the first working state.
When the first control unit 10 detects that the input signal is located in the power class 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 the class AB operation state, that is, the class two operation state.
It should be noted that, the first parameter is a gate voltage of the power amplifier, and 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 for adjusting the gate voltage of the power amplifier; the second parameter is the drain voltage of the power amplifier, and the second control unit 20 is connected to the drain of the power amplifier in the power amplifier branch, i.e. the second adjustment signal is used for adjusting the drain voltage of the power amplifier.
The average power and the peak power of the input signal are divided into 15-20 power classes, and the first adjusting signal and the second adjusting signal corresponding to each power class are provided with corresponding configuration parameters. The first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplification branch according to the power levels of different input signals through the first adjusting signal, so that the power amplifier in the power amplification device can be adjusted from the operating state of class C to the operating state of class AB, similar to continuous change, and the operating state of the power amplifier can also be continuously variable in the process of changing the input signal of the power amplification device from the first power to the third power. Meanwhile, the first control unit 10 adjusts the second parameter of the power amplifier in the selected power amplifier branch circuit through the second adjusting signal according to the power levels of different input signals, so that the power amplifier can work in the optimal efficiency interval based on the received input signals.
When the power amplifier in the power amplifying device is in a class-C working state, the power amplifying device is used for processing signals with current conduction in less than half of input signal periods (namely, conduction angles are less than half of periods) in the input signals. In this case, the efficiency of the power amplifying device is high, but the output current of the power amplifier in the circuit is prone to nonlinear distortion.
When the power amplifier in the power amplifying device is in the class AB working state, the power amplifying device is used for processing the signal when the current conduction in the input signal is larger than half period of the input signal and smaller than one period of the input signal (the conduction angle is more than half period and less than half period). At this time, the power amplification device has high amplification efficiency, and the power amplifier is in a micro-conduction state in a static state, so that crossover distortion can be well improved.
Therefore, the power amplifier 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 adjusting signal and the second adjusting signal generated by the input signal, and 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.
Unlike the prior art, the adjusting method of the power amplifying device of the present embodiment receives the input signal of the power amplifying device through the first control unit 10, and generates the control signal, the first adjustment signal and the second adjustment signal based on the matching result of the input signal and the preset table; the first control unit 10 controls the switching 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 adjusts a first parameter of the power amplifier in the selected power amplifier branch circuit through the first adjusting signal, and controls the second control unit 20 to adjust a second parameter of the power amplifier in the selected power amplifier branch circuit through the second adjusting signal, so that the working state of the power amplifier can be continuously adjusted between the first type working state and the second type working state. In this way, the switch unit 30 is controlled to select the corresponding power amplification branch by detecting the input signal of the power amplification device, so as to adjust the first parameter of the power amplifier, so that the power amplifier in the power amplification device can be adjusted from the operating state of class C to the operating state of class AB, similar to continuous variation.
Referring to fig. 3, fig. 3 is a flow chart of a second embodiment of the adjusting method of the power amplifying device of the present application, as shown in fig. 3, the adjusting method of the present application further includes the following steps:
S201: and receiving an output signal, comparing the output signal with the input signal, judging whether the power amplification device works normally, and updating the first adjusting signal and the second adjusting signal.
Specifically, the first control unit 10 receives an output signal generated by amplifying the power amplifying device based on the input signal through the output detection unit 70, compares the input signal and the output signal of the power amplifying device, determines whether the power amplifying 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 second adjustment signal to adjust the power amplifier in the selected power amplifying branch.
S202: when it is judged that the power amplifying device is abnormal in operation, the first control unit 10 controls the power amplifier in the selected power amplifying branch to stop operation.
Specifically, when the difference between the input signal and the output signal of the power amplification device is too large, the first control unit 10 determines that the power amplification device is abnormal, the first control unit 10 adjusts the power amplifier in the selected power amplification branch through the first adjustment signal, and controls the second control unit 20 to adjust the power amplifier in the selected power amplification branch through the second adjustment signal, so that the power amplifier in the selected power amplification branch stops working.
S203: when it is judged that the power amplifying device is operating normally, the first control unit 10 controls the power amplifying device to adjust the power amplifier in the selected power amplifying branch to adjust the generated output signal.
Specifically, when the first control unit 10 determines that the power amplifying device is operating normally, the first control unit 10 adjusts the first parameter of the power amplifier in the selected power amplifying branch through the first adjustment signal, controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifying branch through the second adjustment signal, and amplifies the input signal through the adjusted power amplifier to generate the output signal, so that the indexes of the input signal and the adjusted output signal approach.
When the input signal is in the power class range of the first power, the first control unit 10 determines average power, peak-to-average ratio and error vector amplitude of the input signal and the output signal of the power amplifying device based on the received input signal and the output signal, and at this time, peak-to-average ratio of the input signal and the output signal is smaller, power backoff is more, and bandwidth is larger. The first control unit 10 calls the setting parameters of the first adjustment signal and the second adjustment signal last time 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 circuit through the updated first adjusting signal, and controls the second control unit 20 to adjust the second parameter of the power amplifier in the selected power amplifier branch circuit through the updated second adjusting signal, so that the indexes of the input signal and the output signal are close, the power rollback of the power amplifier is reduced, and the power amplifying device enters a saturated 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 and then receives the adjusted input signal and the adjusted output signal until the first control unit 10 detects that the input signal and the output signal are within a preset range, and the first control unit 10 stops generating the first adjustment signal and the second adjustment signal.
When the input signal is in the power class range of the second power/third power, the first control unit 10 determines the average power, peak-to-average ratio and error vector magnitude of the input signal and the output signal of the power amplifying device based on the received input signal and the output signal, and at this time, the peak-to-average ratio of the input signal and the output signal is large, and the saturated power and bandwidth are large. The first control unit 10 calls the setting parameters of the first adjustment signal and the second adjustment signal last time 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 of the selected power amplifier branch through the updated second adjustment signal, so that the indexes of the input signal and the output signal approach, and the power amplifier device enters a saturated 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 and then receives the adjusted input signal and the adjusted output signal until the first control unit 10 detects that the input signal and the output signal are within a preset range, and the first control unit 10 stops generating the first adjustment signal and the second adjustment signal.
In contrast to the prior art, the adjusting method of the power amplifying device of the present embodiment receives, through the first control unit 10, an output signal generated by amplifying the power amplifying device based on the input signal, compares the output signal with the input signal, determines whether the power amplifying device is operating normally, and updates the first adjustment signal and the second adjustment signal; when the first control unit 10 judges that the power amplification device works abnormally, the first control unit 10 controls the power amplifier in the selected power amplification branch to stop working; when the first control unit 10 determines that the power amplifying device works normally, the first control unit 10 adjusts the power amplifier in the selected power amplifying branch to adjust the generated output signal. According to the mode, the input signal and the output signal of the power amplification device are detected, the grid voltage and the drain voltage of the power amplifier are adjusted according to the detection result, the input signal is amplified through the adjusted power amplifier to generate the output signal, and meanwhile the power amplifier enters a saturation region in advance based on the received input signal, so that the working efficiency of the power amplification device is improved.
Referring to fig. 1, fig. 1 is a circuit schematic of a power amplifying device according to a first embodiment of the present application. As shown in fig. 1, the power amplifying device of the present embodiment includes a first control unit 10, a second control unit 20, a switching unit 30, a first power amplifying branch 40, and a second power amplifying branch 50.
Optionally, the power amplifying device of the present embodiment further includes an input detecting unit 60 and an output detecting unit 70, where the input detecting unit 60 is configured to detect an input signal of the power amplifying device, and the output detecting unit 70 is configured to detect an output signal of the power amplifying device. The input detection unit 60 and the output detection unit 70 provide accurate detection results of the input signal and the output signal for the first control unit 10, so that the accuracy of the first control unit 10 in adjusting the switch unit 30 and the corresponding power amplifier branch is ensured.
Optionally, 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, where the first input matching unit 41 and the first output matching unit 43 are used to improve matching between an input signal and an output signal of the first power amplifier branch 40, improve output power and efficiency, and ensure that the first power amplifier branch 40 can maintain good matching between the input signal and the output signal in the case of a change in gate voltage of the first power amplifier 42 during adjustment. The second power amplification branch 50 includes a second input matching unit 51, a second power amplifier 52 and a second output matching unit 53 connected in series, where the second input matching unit 51 and the second output matching unit 53 are used to improve matching between an input signal and an output signal of the second power amplification branch 50, improve output power and efficiency, and ensure that the second power amplification branch 50 can maintain good matching between the input signal and the output signal under the condition of a gate voltage change of the second power amplifier 52 in the adjustment process.
Specifically, the first control unit 10 is connected to the input detection unit 60, receives an input signal of the power amplification device through the input detection unit 60, and generates a control signal, a first adjustment signal, and a second adjustment signal based on the input signal. The switching unit 30 is connected to the first control unit 10, the first input matching unit 41 in the first power amplification branch 40, and the second input matching unit 51 in the second power amplification branch 50, where the first control unit 10 controls the switching unit 30 to select the corresponding power amplification branch from the first power amplification branch 40 and the second power amplification branch 50 by using the control signal to input the received input signal.
The first control unit 10 is further connected to a first power amplifier 42 in the first power amplifier branch 40 and a second power amplifier 52 in the second power amplifier branch 50, and the first control unit 10 adjusts the gate voltage of the power amplifier in the selected power amplifier branch by means of 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, and 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 the second adjustment signal.
Optionally, the power amplifying device of the present embodiment further includes a phase unit 80 and an impedance transformation unit 90. The first end of the phase unit 80 is connected to the output end of the first power amplifier branch 40, and the 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 amplification 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 amplification branch 40 and the second power amplification branch 50 are combined.
Further, in the power amplifying device of this embodiment, the selected power amplifying branch amplifies the input signal and the output signal of the power amplifying branch selected by the phase unit 80 and the phase unit 80 of the impedance transformation unit 90 is combined, and the output detection unit 70 obtains the output signal of the power amplifying device. The first control unit 10 receives an output signal of the power amplifying device, compares the output signal with the input signal, determines whether the power amplifying device is operating normally, and adjusts the generated first adjustment signal and second adjustment signal. When the first control unit 10 judges that the power amplification device works abnormally, the first control unit 10 controls the power amplifier in the selected power amplification branch to stop working; when the first control unit 10 determines that the power amplifying device is operating normally, the first control unit 10 adjusts the input signal and the output signal of the power amplifying device.
Unlike the prior art, the power amplifying device of the present embodiment includes a first control unit 10, a second control unit 20, a switching unit 30, a first power amplifying branch 40 and a second power amplifying branch 50, wherein: the first control unit 10 receives an input signal of the power amplification device, generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result of the input signal and a preset table, the second control unit 20 is connected with the first control unit 10, the first power amplification branch 40 and the second power amplification branch 50, the switch unit 30 is connected with the first control unit 10, and the switch unit 30 is connected with an input end of the first power amplification branch 40 and an input end of the second power amplification branch 50; the first control unit 10 is configured 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 a 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 selected power amplifier branch through a second adjustment signal, so that an operating state of the power amplifier can be continuously adjusted between a first type of operating state and a second type of operating state. According to the power amplification device, the switch unit 30 is controlled to select the corresponding power amplification branch by detecting the input signal and the output signal of the power amplification device, the working state of the power amplifier is continuously adjusted by the first adjusting signal and the second adjusting signal, and meanwhile, the power amplifier enters a saturation region in advance based on the received input signal, so that the working efficiency of the power amplification device is improved.
Referring to fig. 4, fig. 4 is a circuit schematic of a second embodiment of the power amplifying device of the present application. As shown in fig. 4, the switching unit 30 of the power amplifying 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.
Specifically, the first end of the first microstrip line 301 receives an input signal, and the second ends of the first microstrip line 301 are connected to the first ends of the second microstrip line 302 and the fifth microstrip line 305, respectively. The second microstrip line 302, the first photodiode 309, the third microstrip line 303, and the fourth microstrip line 304 are connected in series, a control signal is received between the second microstrip line 302 and the first photodiode 309, and the second end of the fourth microstrip line 304 outputs an 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, a 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 an input signal.
An input terminal of the third photodiode 311 receives the control signal, and an output terminal 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, receives the control signal, the second end of the phase delay line 308 is connected to the input end of the fifth photodiode 313, receives 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, and the output end of the fifth photodiode 313 is connected between the sixth microstrip line 306 and the seventh microstrip line 307. An input terminal of the sixth photodiode 314 receives the control signal, and an output terminal of the sixth photodiode 314 is connected between the sixth microstrip line 306 and the seventh microstrip line 307.
In this embodiment, the first control unit 10 controls the on/off of the switching path corresponding to the switching unit 30 based on the control signal by using the impedance characteristic that the photodiode in the switching unit 30 is approximately turned on or off under the direct current forward-reverse bias. The photodiode presents a linear resistance to the rf signal, the resistance being determined by the dc bias. When the first control unit 10 controls the photodiode to be forward biased based on the control signal, the resistance value of the photodiode is small and close to a short circuit, at the moment, the switching path of the photodiode is conducted, and an input signal is output to a corresponding power amplification branch; when the first control unit 10 controls the photodiode to reversely bias based on the control signal, the resistance value of the photodiode is large and close to the disconnection, and at the moment, the switch path where the photodiode is located is disconnected, and the output of the input signal to the corresponding power amplification branch circuit is stopped.
It should be noted that, the phase delay line 308 in the switch unit 30 may be disposed at the input end of the switch unit 30 or the power amplification branch according to the actual use of the power amplification device, and is used for setting a delay amount, and adjusting the phase difference between the first power amplification branch 40 and the second power amplification branch 50 of the power amplification device, so as to maximize the power and efficiency of the output signal output by the power amplification device. The microstrip line in the switch unit 30 is a microwave transmission line formed by a single conductor strip on a dielectric substrate, and is suitable for manufacturing a planar structure transmission line of a microwave integrated circuit.
The switching unit 30 provided in this embodiment further includes circuit components such as a power supply inductance, a blocking capacitor, and a matching capacitor, which will not be described here. The switch unit 30 of the present embodiment may use a microstrip line and a photodiode to input an input signal to a corresponding power amplifier branch, and the switch unit 30 may use an inductor, a capacitor, a load and a photodiode, and the switch unit 30 may also be a switch chip.
The switching unit 30 of the power amplifying 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. In this way, the power amplifying device selects a single input or two inputs through the switch unit 30 based on different input signals, the input signals enter different working modes of the power amplifier, and the phase consistency of the signals in the output combining process is ensured.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (10)
1. The power amplification device comprises a first control unit, a second control unit, a switch unit, a first power amplification branch and a second power amplification branch, and the adjusting method comprises the following steps:
The first control unit receives an input signal of the power amplification device and generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result of the input signal and a preset table;
The first control unit controls the switch unit to select a corresponding power amplification branch from the first power amplification branch and the second power amplification branch through the control signal, adjusts a first parameter of a power amplifier in the selected power amplification branch through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting 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.
2. The adjustment method of claim 1, wherein the step of generating the control signal, the first adjustment signal, and the second adjustment signal based on the matching result of the input signal and the preset table comprises:
The first control unit obtains a power level corresponding to the input signal based on the received input signal and the preset table in a matching way, obtains a matching result according to the power level of the input signal and the preset table in a matching way, 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, while the preset table stores configuration parameters of the control signal, the first adjustment signal, and the second adjustment signal corresponding to the power level.
3. The method of adjusting according to claim 2, wherein,
The first control unit is matched with the preset table based on the input signal, when the first control unit detects that the input signal is located in the power level range of 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 the control signal is used for controlling the switch unit to select a corresponding power amplification branch from the first power amplification branch and the second power amplification branch to input the input signal;
The first control unit is matched with the preset table based on the input signal, when the first control unit detects that the input signal is located in the power class range of the second power/the 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 the switch unit is controlled by the control signal to input the input signal to the first power amplification branch and the second power amplification branch simultaneously.
4. The method of adjusting as claimed in claim 3, wherein,
When the first control unit detects that the input signal is located in the power level range of the first power, the first control unit adjusts a first parameter of a power amplifier in a selected power amplification branch through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting signal, so that the power amplifier in the selected power amplification branch is configured to enter a first working state;
When the first control unit detects that the input signal is located in the power level range of the second power/the third power, the first control unit adjusts a first parameter of a power amplifier in a selected power amplification branch through the first adjusting signal, and controls the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting signal, so that the power amplifier in the selected power amplification branch is configured to enter a second class working state.
5. The adjustment method according to claim 1, characterized in that the adjustment method further comprises:
The first control unit receives an output signal generated by amplifying the input signal by the power amplifying device, compares the input signal with the output signal, judges whether the power amplifying device works normally or not, and updates the first adjusting signal and the second adjusting signal.
6. The method of claim 4, wherein,
When the first control unit judges that the power amplification device works abnormally, the first control unit controls the power amplifier in the selected power amplification branch to stop working;
When the first control unit judges that the power amplifying device works normally, the first control unit adjusts the power amplifier in the selected power amplifying branch circuit so as to adjust the generated output signal.
7. The utility model provides a power amplification device, its characterized in that, power amplification device includes first control unit, second control unit, switch unit, first power amplifier branch road and second power amplifier branch road, wherein:
The first control unit receives an input signal of the power amplification device, generates a control signal, a first adjustment signal and a second adjustment signal based on a matching result of the input signal and a preset table, wherein the second control unit is connected with the first control unit, the first power amplification branch and the second power amplification branch, the switch unit is connected with the first control unit, and the switch unit is connected with the input end of the first power amplification branch and the input end of the second power amplification branch;
The first control unit is used for controlling the switch unit to select a corresponding power amplification branch from the first power amplification branch and the second power amplification branch through the control signal, adjusting a first parameter of a power amplifier in the selected power amplification branch through the first adjusting signal, and controlling the second control unit to adjust a second parameter of the power amplifier in the selected power amplification branch through the second adjusting 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.
8. The apparatus of claim 7, wherein the first power amplifier branch comprises a first input matching unit, a first power amplifier, and a first output matching unit connected in series; the second power amplifier branch circuit comprises a second input matching unit, a second power amplifier and a second output matching unit which are connected in series.
9. The apparatus of claim 7, wherein the apparatus further comprises:
An input detection unit connected with the first control unit and used for receiving the input signal of the power amplifying device;
The output detection unit is connected with the first control unit and is used for receiving an output signal of the power amplification device;
The first end of the phase unit is connected with the output end of the first power amplification branch, and the second end of the phase unit is connected with the output end of the second power amplification branch;
And the first end of the impedance transformation unit is connected with the output end of the second power amplification branch, and the second end of the impedance transformation unit is connected with the output detection unit.
10. The apparatus of claim 7, wherein the switching unit comprises a first microstrip line, a second microstrip line, a third microstrip line, a fourth microstrip line, a fifth microstrip line, a sixth microstrip line, a seventh microstrip line, a phase delay line, a first photodiode, a second photodiode, a third photodiode, a fourth photodiode, a fifth photodiode, and a sixth photodiode, wherein:
The first end of the first microstrip line receives the input signal, and the second end of the first microstrip line is respectively connected with the first ends of the second microstrip line and the fifth microstrip line;
The second microstrip line, the first photodiode, the third microstrip line and the fourth microstrip line are connected in series, the control signal is received between the second microstrip line and the first photodiode, and the second end of the fourth microstrip line outputs the input signal;
the fifth microstrip line, the second photodiode, the sixth microstrip line and the seventh microstrip line are connected in series, the control signal is received between the fifth microstrip line and the second photodiode, and the second end of the seventh microstrip line outputs the input signal;
The input end of the third photodiode receives the control signal, and the output end of the third photodiode is connected between the third microstrip line and the fourth microstrip line;
The first end of the phase delay line is connected with the input end of the fourth photodiode, the control signal is received, the second end of the phase delay line is connected with the input end of the fifth photodiode, the control signal is received, the output end of the fourth photodiode is connected between the third microstrip line and the fourth microstrip line, and the output end of the fifth photodiode is connected between the sixth microstrip line and the seventh microstrip line;
the input end of the sixth photodiode receives the control signal, and the output end of the sixth photodiode is connected between the sixth microstrip line and the seventh microstrip line.
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| CN202211354418.3A CN117997281A (en) | 2022-10-28 | 2022-10-28 | Method for adjusting power amplification device and power amplification device |
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| CN202211354418.3A CN117997281A (en) | 2022-10-28 | 2022-10-28 | Method for adjusting power amplification device and power amplification device |
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