CN116232248A - Control method, device and system of power amplifier and storage medium - Google Patents
Control method, device and system of power amplifier and storage medium Download PDFInfo
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Abstract
The application relates to a control method, a device, a system and a storage medium of a power amplifier, wherein the method comprises the steps of responding to an acquired input signal, measuring the voltage of the input signal and drawing the input voltage signal; segmenting an input signal according to an input voltage signal, wherein the segmentation comprises a low-voltage segment input signal and a high-voltage segment input signal; the low-voltage section input signal is phase-shifted and then is input into a first power amplifier for amplification, and a first amplified waveform is obtained; and inputting the high-voltage section input signal into a second power amplifier for amplification to obtain a second amplified waveform, and synthesizing the first amplified waveform and the second amplified waveform to obtain an output signal. The control method, the device, the system and the storage medium of the power amplifier disclosed by the application divide the input signal by using power and amplify the division result respectively, so that the energy consumption is reduced, and meanwhile, the channel interference generated by high energy consumption can be restrained, so that the communication quality is improved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, a system, and a storage medium for controlling a power amplifier.
Background
The radio frequency power amplifier is an important component of various wireless transmitters, and because the linearity requirement of high-power signals needs to be met, when an input signal changes, a power signal is fixed, and the power voltage value of the power amplifier is higher; for relatively small power signals, the excess voltage portion may be wasted in the form of heat, thereby reducing the energy efficiency of the power amplifier.
The nonlinear distortion of the radio frequency power amplifier can cause the radio frequency power amplifier to generate new frequency components, such as second order distortion of second order harmonic and double-tone beat frequency, and third order distortion of third order harmonic and multi-tone beat frequency. These new frequency components, if they fall within the passband, can cause direct interference with the transmitted signal and, if they fall outside the passband, can interfere with signals of other channels.
For example, for low-power signals, the class-a amplifier has better amplifying effect, but when the power of the signal suddenly increases, the class-a amplifier can generate distortion amplification, and harmonic components generated by the distortion amplification can interfere with other channels.
For the mobile phone end, along with the change of the complexity of the communication environment, the energy consumption in the signal amplification process is increased gradually, the communication quality can be improved while the energy consumption is improved, but the problem of channel interference caused by high energy consumption also tends to be serious.
Disclosure of Invention
The application provides a control method, a device, a system and a storage medium of a power amplifier, which divide input signals by using power and amplify division results respectively, so that the energy consumption is reduced, and meanwhile, channel interference generated by high energy consumption can be restrained, so that the communication quality is improved.
The above object of the present application is achieved by the following technical solutions:
in a first aspect, the present application provides a method for controlling a power amplifier, including:
measuring the voltage of the input signal and drawing the input voltage signal in response to the acquired input signal;
segmenting an input signal according to an input voltage signal, wherein the segmentation comprises a low-voltage segment input signal and a high-voltage segment input signal;
the low-voltage section input signal is phase-shifted and then is input into a first power amplifier for amplification, and a first amplified waveform is obtained;
inputting the high-voltage section input signal into a second power amplifier for amplification to obtain a second amplified waveform; and
synthesizing the first amplified waveform and the second amplified waveform to obtain an output signal;
the phase shifting angle of the low-voltage section input signal when phase shifting is positively correlated with the obtained time of the second amplified waveform;
the input voltage of the first power amplifier fluctuates with the corresponding interval in the input voltage signal;
the high-voltage section input signal obtains a second amplified waveform by using a voltage tracking and equal-width pulse modulation mode.
In a possible implementation manner of the first aspect, when the length of the high-voltage segment input signal is smaller than the first set length, two low-voltage segment input signals adjacent to the high-voltage segment input signal in a time sequence are input into a first power amplifier to be amplified, so as to obtain a first amplified waveform.
In a possible implementation manner of the first aspect, when a distance between two end points of the high-voltage segment input signal is smaller than a second set length, two low-voltage segment input signals adjacent to the high-voltage segment input signal in a time sequence are input into a first power amplifier to be amplified, so as to obtain a first amplified waveform.
In a possible implementation manner of the first aspect, the input voltage adjustment of the first power amplifier includes:
collecting voltage value points of low-voltage section input signals according to set frequency;
any two adjacent voltage value points on the linear segment connection sequence are used for obtaining a first basic input signal;
carrying out smoothing and integral distance translation on the first basic input signal to obtain a first voltage input signal; and
the first voltage input signal is sent to a first power amplifier.
In a possible implementation manner of the first aspect, the low-voltage segment input signal includes a first sub-low-voltage segment input signal located in a first quadrant of the coordinate system and a second sub-low-voltage segment input signal located in a fourth quadrant of the coordinate system;
the number of the first power amplifiers is two;
the first sub-low voltage section input signal and the second sub-low voltage section input signal are respectively input into two first power amplifiers.
In a possible implementation manner of the first aspect, the input voltage adjustment of the second power amplifier includes:
collecting voltage value points of input signals of a high-voltage section according to a set frequency;
any two adjacent voltage value points on the linear segment connection sequence are used for obtaining a second basic input signal;
carrying out smoothing and integral distance translation on the second basic input signal to obtain a second voltage input signal; and
the second voltage input signal is converted into an equal-width pulse wave and then is input into a second power amplifier.
In a possible implementation manner of the first aspect, the method further includes:
calculating the linear distance between the second voltage input signal and the corresponding position point on the second basic input signal, wherein the linear distance between any position point is larger than the first set distance and smaller than the second set distance; and
when the linear distance at one position point on the second voltage input signal is larger than the second set distance, adjusting the movement of the position point to approach to the second basic input signal and carrying out linear segment connection and smoothing again;
wherein the re-straight segment connection includes at least a previous position point and at least a subsequent position point on the sequential sequence.
In a second aspect, the present application provides a control device for a power amplifier, including:
the processing unit is used for responding to the acquired input signals, measuring the voltage of the input signals and drawing the input voltage signals;
the dividing unit is used for dividing the input signal according to the input voltage signal, wherein the dividing unit comprises a low-voltage section input signal and a high-voltage section input signal;
the first amplifying unit is used for shifting the phase of the low-voltage section input signal and inputting the low-voltage section input signal into the first power amplifier for amplification to obtain a first amplified waveform;
the second amplifying unit is used for inputting the high-voltage section input signal into the second power amplifier to amplify to obtain a second amplified waveform; and
the synthesizing unit is used for synthesizing the first amplified waveform and the second amplified waveform to obtain an output signal;
the phase shifting angle of the low-voltage section input signal when phase shifting is positively correlated with the obtained time of the second amplified waveform;
the input voltage of the first power amplifier fluctuates with the corresponding interval in the input voltage signal;
the high-voltage section input signal obtains a second amplified waveform by using a voltage tracking and equal-width pulse modulation mode.
In a third aspect, the present application provides a control system for a power amplifier, the system comprising:
one or more memories for storing instructions; and
one or more processors configured to invoke and execute the instructions from the memory, to perform the method as described in the first aspect and any possible implementation of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium comprising:
a program which, when executed by a processor, performs a method as described in the first aspect and any possible implementation of the first aspect.
In a fifth aspect, the present application provides a computer program product comprising program instructions which, when executed by a computing device, perform a method as described in the first aspect and any possible implementation manner of the first aspect.
In a sixth aspect, the present application provides a chip system comprising a processor for implementing the functions involved in the above aspects, e.g. generating, receiving, transmitting, or processing data and/or information involved in the above methods.
The chip system can be composed of chips, and can also comprise chips and other discrete devices.
In one possible design, the system on a chip also includes memory to hold the necessary program instructions and data. The processor and the memory may be decoupled, provided on different devices, respectively, connected by wire or wirelessly, or the processor and the memory may be coupled on the same device.
Drawings
Fig. 1 is a schematic block diagram of a control method of a power amplifier according to the present application.
Fig. 2 is a schematic block diagram of an input voltage adjustment flow of a first power amplifier provided in the present application.
Fig. 3 is a schematic block diagram of an input voltage adjustment flow of a second power amplifier provided in the present application.
Description of the embodiments
The technical solutions in the present application are described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the present application discloses a control method of a power amplifier, comprising the following steps:
s101, responding to an acquired input signal, measuring the voltage of the input signal and drawing an input voltage signal;
s102, segmenting an input signal according to an input voltage signal, wherein the segmentation comprises a low-voltage segment input signal and a high-voltage segment input signal;
s103, shifting the phase of the low-voltage section input signal, and inputting the low-voltage section input signal into a first power amplifier for amplification to obtain a first amplified waveform;
s104, inputting the high-voltage section input signal into a second power amplifier for amplification to obtain a second amplified waveform; and
s105, synthesizing the first amplified waveform and the second amplified waveform to obtain an output signal;
the phase shifting angle of the low-voltage section input signal when phase shifting is positively correlated with the obtained time of the second amplified waveform;
the input voltage of the first power amplifier fluctuates with the corresponding interval in the input voltage signal;
the high-voltage section input signal obtains a second amplified waveform by using a voltage tracking and equal-width pulse modulation mode.
It should be noted first that the control method of the power amplifier disclosed in the present application is applied to at least one group of power amplifier arrays, where the power amplifier arrays are controlled by one control chip, and for convenience of description, the at least one group of power amplifier arrays and the control chip are collectively referred to as a power amplifying unit.
Specifically, in step S101, the power amplifying unit receives an input signal, and in response to the obtained input signal, the power amplifying unit measures the voltage of the input signal and draws the input voltage signal, where the purpose of drawing the input signal is to adjust the bias voltage of the power amplifying unit according to the input signal.
In the background art, when an input signal changes, a power supply signal is fixed, and a power supply voltage value of a power amplifier is high; for relatively small power signals, the excess voltage portion may be wasted in the form of heat, thereby reducing the energy efficiency of the power amplifier.
That is, when the bias voltage is kept unchanged, the temperature of the power amplifying unit is increased, and energy waste is caused, and meanwhile, the amplification of the power amplifier is negatively affected, because after the temperature of the power amplifier is increased, the linearity of the amplification is affected (a part of the linear region becomes a nonlinear region), and meanwhile, harmonics may be generated.
In step S102, the input signal is segmented according to the input voltage signal, the segmentation including a low voltage segment input signal and a high voltage segment input signal. The effect of the segmentation is to amplify the input signal using different power amplifiers, since the linear region is fixed for a fixed power amplifier. In order to obtain a better amplification effect, the input signals are preferably amplified in the linear region of the power amplifier, and the input signals are amplified by different power amplifiers and then combined, so that a better amplification effect can be obtained.
In step S103, the low-voltage input signal is phase-shifted and then input into a first power amplifier for amplification, so as to obtain a first amplified waveform; in step S104, the high-voltage segment input signal is input to a second power amplifier to be amplified, and a second amplified waveform is obtained.
Step S103 and step S104 may be sequentially exchanged. The first amplified waveform and the second amplified waveform are synthesized in step S105 to obtain an output signal.
For amplifying the input signal of the low-voltage section, the input voltage of the first power amplifier fluctuates along with the corresponding section in the input voltage signal, that is, the input voltage fluctuation of the first power amplifier coincides with the fluctuation of the input signal of the low-voltage section, and the expression of the input voltage fluctuation and the fluctuation of the input signal of the low-voltage section in the coordinate system has the same ascending and descending trend.
For amplifying the high-voltage section input signal, the second amplified waveform is obtained by the high-voltage section input signal by using a voltage tracking and equal-width pulse modulation mode, wherein the voltage tracking refers to tracking the voltage rising and falling trend of the high-voltage section input signal, and then the amplified signal of the high-voltage section input signal is generated by combining the voltage rising and falling trend of the high-voltage section input signal by using the equal-width pulse modulation mode and tracking.
It should be appreciated that for a waveform, a number of rectangles arranged in a time series may be used to approximate the waveform, and the smaller the width of a rectangle, the smaller the spacing between adjacent rectangles, and the higher the similarity between the number of rectangles arranged in a time series and the waveform.
In the present application, the rectangular height change in the time series is obtained by using the voltage tracking method, and the rectangular width is generated by using the equal width method. At the same time, the spacing between adjacent rectangles is also treated in an equidistant manner.
The generation mode has the advantages that the width, the height and the spacing of the rectangular waves do not need to be calculated through complex calculation, the generation time of the rectangular waves can be shortened, and the electric energy consumed in the calculation process can be saved. Meanwhile, in order to ensure the normal operation of the subsequent synthesis process, the phase shift is performed on the low-voltage section input signal, and the phase shift angle during the phase shift is positively correlated with the obtaining time of the second amplified waveform. The purpose of the phase shifting is to enable the first amplified waveform and the second amplified waveform to correspond to the end-to-end time points when the output signals are synthesized.
In summary, the control method of the power amplifier provided by the present application uses a processing method of segmented amplification for amplifying an input signal, so that the input signal can be amplified in a linear area as much as possible. This way of processing can give a better magnification effect.
For the input signal part in the nonlinear region, the amplification mode of voltage tracking and equal-width pulse modulation is used, the amplification mode has the advantages of reducing the data calculation amount in the amplification process and providing a larger inclusion region, wherein the inclusion region refers to a linear region which can be provided by amplifying a high-voltage section input signal by using a specific type of power amplifier, and the coverage of the linear region cannot be enlarged by increasing the power amplifier without limit.
Therefore, although the high-voltage input signal is amplified using the rectangular wave analog method in the present application, this method also has a certain distortion, the distortion degree can be controlled within a limited range compared to the case where the high-voltage input signal is amplified in the nonlinear region. In addition, this approach also suppresses the temperature rise of the power amplifier and generates harmonics, which helps to reduce direct interference to the transmitted signal and signals interfering with other channels.
In some possible implementations, when the length of the high-voltage segment input signal is smaller than the first set length, two low-voltage segment input signals adjacent to the high-voltage segment input signal in time sequence are input into a first power amplifier to be amplified, so as to obtain a first amplified waveform.
In other possible implementations, when the distance between two end points of the high-voltage segment input signal is smaller than the second set length, two low-voltage segment input signals adjacent to the high-voltage segment input signal in time sequence are input into a first power amplifier to be amplified, so as to obtain a first amplified waveform.
The purpose of the two modes is to directly amplify part of the input signals of the high-voltage section which do not meet the amplification requirement by using the first power amplifier, and the advantage of the mode is that the phase shifting of the input signals of the low-voltage section is not needed, and the subsequent synthesis step is omitted.
Because of the hysteresis and power consumption of the voltage tracking and isopulse modulation processing of this portion of the signal in some special cases, extremely short signal distortions are acceptable compared to short signal distortions.
In some examples, referring to fig. 2, the input voltage adjustment of the first power amplifier includes:
s201, collecting voltage value points of input signals of a low-voltage section according to a set frequency;
s202, any two adjacent voltage value points on a straight line segment connection sequence are used to obtain a first basic input signal;
s203, carrying out smoothing and integral distance translation on the first basic input signal to obtain a first voltage input signal; and
s204, the first voltage input signal is sent to the first power amplifier.
The content in steps S201 to S204 is to obtain the voltage fluctuation condition of the low-voltage section input signal, and then match the voltage fluctuation condition with the input voltage of the first power amplifier. The method is that a plurality of straight line segments connected end to end are used to replace curve representation, and the method has the advantage of reducing the data acquisition amount.
In some possible implementations, the low-voltage input signals are processed by using a segmented phase shift processing mode, and each low-voltage input signal is subjected to phase shift, so that processing time is reserved for the processing process of smoothing the first basic input signal and translating the whole distance.
Further, the low voltage section input signals comprise a first sub low voltage section input signal located in a first quadrant of the coordinate system and a second sub low voltage section input signal located in a fourth quadrant of the coordinate system;
the first sub low voltage section input signal and the second sub low voltage section input signal are amplified by using one first power amplifier respectively, that is, the number of the first power amplifiers is two, and the first sub low voltage section input signal and the second sub low voltage section input signal are input into the two first power amplifiers respectively.
The method can eliminate the use of bias voltage, and can further reduce the energy consumption in the amplifying process of the input signal.
In some examples, referring to fig. 3, the input voltage adjustment of the second power amplifier includes:
s301, collecting voltage value points of input signals of a high-voltage section according to a set frequency;
s302, any two adjacent voltage value points on the straight line segment connection sequence are used to obtain a second basic input signal;
s303, carrying out smoothing and integral distance translation on the second basic input signal to obtain a second voltage input signal; and
s304, converting the second voltage input signal into an equal-width pulse wave and then inputting the equal-width pulse wave into a second power amplifier.
The contents in steps S301 to S304 are the same as those in steps S201 to S204, and will not be described here.
Further, the method further comprises the following steps:
s401, calculating the linear distance between the second voltage input signal and the corresponding position point on the second basic input signal, wherein the linear distance between any position point is larger than the first set distance and smaller than the second set distance; and
s402, when the linear distance at one position point on the second voltage input signal is larger than a second set distance, adjusting the movement of the position point to approach to the second basic input signal and carrying out linear segment connection and smoothing again;
wherein the re-straight segment connection includes at least a previous position point and at least a subsequent position point on the sequential sequence.
The content in steps S401 to S402 is to fine-tune the local part of the second voltage input signal, where the fine-tuning is to improve the matching degree between the second voltage input signal and the second basic input signal. It will be appreciated that the second voltage input signal is generated locally using straight line segments, and after smoothing, the position of some voltage value points will change, and at this time, a straight line distance check is required.
When the linear distance check is not satisfactory, the movement of the position point to the position close to the second basic input signal needs to be adjusted, and the linear segment connection and the smoothing process are performed again, wherein the adjustment range comprises at least the former position point and at least the latter position point in the sequence.
It will be appreciated that when a location point is not in compliance with the linear distance check requirement, a curve segment in which the location point is located is also not in compliance, and if the location point is merely adjusted, local variation anomalies (speed of change of radius of curvature and front-back mismatch) of the second voltage input signal may be caused. With the number of position points adjusted being increased, a longer line segment can be used to accommodate the change of the curvature radius of the part, so that the change of the curvature radius of the second voltage input signal has more uniformity.
The application also provides a control device of the power amplifier, which comprises:
the processing unit is used for responding to the acquired input signals, measuring the voltage of the input signals and drawing the input voltage signals;
the dividing unit is used for dividing the input signal according to the input voltage signal, wherein the dividing unit comprises a low-voltage section input signal and a high-voltage section input signal;
the first amplifying unit is used for shifting the phase of the low-voltage section input signal and inputting the low-voltage section input signal into the first power amplifier for amplification to obtain a first amplified waveform;
the second amplifying unit is used for inputting the high-voltage section input signal into the second power amplifier to amplify to obtain a second amplified waveform; and
the synthesizing unit is used for synthesizing the first amplified waveform and the second amplified waveform to obtain an output signal;
the phase shifting angle of the low-voltage section input signal when phase shifting is positively correlated with the obtained time of the second amplified waveform;
the input voltage of the first power amplifier fluctuates with the corresponding interval in the input voltage signal;
the high-voltage section input signal obtains a second amplified waveform by using a voltage tracking and equal-width pulse modulation mode.
Further, when the length of the high-voltage section input signal is smaller than the first set length, two low-voltage section input signals adjacent to the high-voltage section input signal in time sequence are input into a first power amplifier to be amplified, and a first amplified waveform is obtained.
Further, when the distance between two end points of the high-voltage section input signal is smaller than the second set length, two low-voltage section input signals adjacent to the high-voltage section input signal in time sequence are input into a first power amplifier to be amplified, and a first amplified waveform is obtained.
Further, the method further comprises the following steps:
the first acquisition unit is used for acquiring voltage value points of the input signals of the low-voltage section according to the set frequency;
the first drawing unit is used for obtaining a first basic input signal by using any two adjacent voltage value points on the straight line segment connection sequence;
the first processing unit is used for carrying out smoothing processing and integral distance translation on the first basic input signal to obtain a first voltage input signal; and
the first input unit is used for sending a first voltage input signal to the first power amplifier.
Further, the low voltage section input signals comprise a first sub low voltage section input signal located in a first quadrant of the coordinate system and a second sub low voltage section input signal located in a fourth quadrant of the coordinate system;
the number of the first power amplifiers is two;
the first sub-low voltage section input signal and the second sub-low voltage section input signal are respectively input into two first power amplifiers.
Further, the method further comprises the following steps:
the second acquisition unit is used for acquiring voltage value points of the input signals of the high-voltage section according to the set frequency;
the second drawing unit is used for connecting any two adjacent voltage value points on the sequence by using the straight line segments to obtain a second basic input signal;
the second processing unit is used for carrying out smoothing processing and integral distance translation on the second basic input signal to obtain a second voltage input signal; and
and the second input unit is used for converting the second voltage input signal into an equal-width pulse wave and inputting the equal-width pulse wave into the second power amplifier.
Further, the method further comprises the following steps:
the calculating unit is used for calculating the linear distance between the second voltage input signal and the corresponding position point on the second basic input signal, and the linear distance between any position point is larger than the first set distance and smaller than the second set distance; and
the adjusting and reprocessing unit is used for adjusting the position point to move close to the second basic input signal and carrying out straight line segment connection and smoothing again when the straight line distance at the position point on the second voltage input signal is larger than a second set distance;
wherein the re-straight segment connection includes at least a previous position point and at least a subsequent position point on the sequential sequence.
In one example, the unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (application specific integratedcircuit, ASIC), or one or more digital signal processors (digital signal processor, DSP), or one or more field programmable gate arrays (field programmable gate array, FPGA), or a combination of at least two of these integrated circuit forms.
For another example, when the units in the apparatus may be implemented in the form of a scheduler of processing elements, the processing elements may be general-purpose processors, such as a central processing unit (central processing unit, CPU) or other processor that may invoke the program. For another example, the units may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Various objects such as various messages/information/devices/network elements/systems/devices/actions/operations/processes/concepts may be named in the present application, and it should be understood that these specific names do not constitute limitations on related objects, and that the named names may be changed according to the scenario, context, or usage habit, etc., and understanding of technical meaning of technical terms in the present application should be mainly determined from functions and technical effects that are embodied/performed in the technical solution.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It should also be understood that in various embodiments of the present application, first, second, etc. are merely intended to represent that multiple objects are different. For example, the first time window and the second time window are only intended to represent different time windows. Without any effect on the time window itself, the first, second, etc. mentioned above should not impose any limitation on the embodiments of the present application.
It is also to be understood that in the various embodiments of the application, terms and/or descriptions of the various embodiments are consistent and may be referenced to one another in the absence of a particular explanation or logic conflict, and that the features of the various embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a computer-readable storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned computer-readable storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The present application also provides a computer program product comprising instructions that, when executed, cause the control system to perform operations of the control system corresponding to the above-described method.
The application also provides a control system of a power amplifier, the system comprising:
one or more memories for storing instructions; and
one or more processors configured to invoke and execute the instructions from the memory to perform the method as described above.
The present application also provides a chip system comprising a processor for implementing the functions involved in the above, e.g. generating, receiving, transmitting, or processing data and/or information involved in the above method.
The chip system can be composed of chips, and can also comprise chips and other discrete devices.
The processor referred to in any of the foregoing may be a CPU, microprocessor, ASIC, or integrated circuit that performs one or more of the procedures for controlling the transmission of feedback information described above.
In one possible design, the system on a chip also includes memory to hold the necessary program instructions and data. The processor and the memory may be decoupled, and disposed on different devices, respectively, and connected by wired or wireless means, so as to support the chip system to implement the various functions in the foregoing embodiments. In the alternative, the processor and the memory may be coupled to the same device.
Optionally, the computer instructions are stored in a memory.
Alternatively, the memory may be a storage unit in the chip, such as a register, a cache, etc., and the memory may also be a storage unit in the terminal located outside the chip, such as a ROM or other type of static storage device, a RAM, etc., that may store static information and instructions.
It is to be understood that the memory in this application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory.
The nonvolatile memory may be a ROM, a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an electrically erasable programmable EPROM (EEPROM), or a flash memory.
The volatile memory may be RAM, which acts as external cache. There are many different types of RAM, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM.
The embodiments of the present invention are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A method of controlling a power amplifier, comprising:
measuring the voltage of the input signal and drawing the input voltage signal in response to the acquired input signal;
segmenting an input signal according to an input voltage signal, wherein the segmentation comprises a low-voltage segment input signal and a high-voltage segment input signal;
the low-voltage section input signal is phase-shifted and then is input into a first power amplifier for amplification, and a first amplified waveform is obtained;
inputting the high-voltage section input signal into a second power amplifier for amplification to obtain a second amplified waveform; and
synthesizing the first amplified waveform and the second amplified waveform to obtain an output signal;
the phase shifting angle of the low-voltage section input signal when phase shifting is positively correlated with the obtained time of the second amplified waveform;
the input voltage of the first power amplifier fluctuates with the corresponding interval in the input voltage signal;
the high-voltage section input signal obtains a second amplified waveform by using a voltage tracking and equal-width pulse modulation mode.
2. The method according to claim 1, wherein when the length of the high-voltage input signal is smaller than the first set length, two low-voltage input signals adjacent to the high-voltage input signal in time sequence are input into the first power amplifier to be amplified, so as to obtain a first amplified waveform.
3. The method according to claim 1, wherein when a distance between two end points of the high-voltage input signal is smaller than a second set length, two low-voltage input signals adjacent to the high-voltage input signal in time sequence are input into the first power amplifier to be amplified, so as to obtain a first amplified waveform.
4. A control method of a power amplifier according to any one of claims 1 to 3, wherein the input voltage adjustment of the first power amplifier comprises:
collecting voltage value points of low-voltage section input signals according to set frequency;
any two adjacent voltage value points on the linear segment connection sequence are used for obtaining a first basic input signal;
carrying out smoothing and integral distance translation on the first basic input signal to obtain a first voltage input signal; and
the first voltage input signal is sent to a first power amplifier.
5. The method of claim 4, wherein the low-voltage segment input signal comprises a first sub-low-voltage segment input signal located in a first quadrant of the coordinate system and a second sub-low-voltage segment input signal located in a fourth quadrant of the coordinate system;
the number of the first power amplifiers is two;
the first sub-low voltage section input signal and the second sub-low voltage section input signal are respectively input into two first power amplifiers.
6. A control method of a power amplifier according to any one of claims 1 to 3, characterized in that the input voltage adjustment of the second power amplifier comprises:
collecting voltage value points of input signals of a high-voltage section according to a set frequency;
any two adjacent voltage value points on the linear segment connection sequence are used for obtaining a second basic input signal;
carrying out smoothing and integral distance translation on the second basic input signal to obtain a second voltage input signal; and
the second voltage input signal is converted into an equal-width pulse wave and then is input into a second power amplifier.
7. The method of controlling a power amplifier according to claim 6, further comprising:
calculating the linear distance between the second voltage input signal and the corresponding position point on the second basic input signal, wherein the linear distance between any position point is larger than the first set distance and smaller than the second set distance; and
when the linear distance at one position point on the second voltage input signal is larger than the second set distance, adjusting the movement of the position point to approach to the second basic input signal and carrying out linear segment connection and smoothing again;
wherein the re-straight segment connection includes at least a previous position point and at least a subsequent position point on the sequential sequence.
8. A control device of a power amplifier, comprising:
the processing unit is used for responding to the acquired input signals, measuring the voltage of the input signals and drawing the input voltage signals;
the dividing unit is used for dividing the input signal according to the input voltage signal, wherein the dividing unit comprises a low-voltage section input signal and a high-voltage section input signal;
the first amplifying unit is used for shifting the phase of the low-voltage section input signal and inputting the low-voltage section input signal into the first power amplifier for amplification to obtain a first amplified waveform;
the second amplifying unit is used for inputting the high-voltage section input signal into the second power amplifier to amplify to obtain a second amplified waveform; and
the synthesizing unit is used for synthesizing the first amplified waveform and the second amplified waveform to obtain an output signal;
the phase shifting angle of the low-voltage section input signal when phase shifting is positively correlated with the obtained time of the second amplified waveform;
the input voltage of the first power amplifier fluctuates with the corresponding interval in the input voltage signal;
the high-voltage section input signal obtains a second amplified waveform by using a voltage tracking and equal-width pulse modulation mode.
9. A control system for a power amplifier, the system comprising:
one or more memories for storing instructions; and
one or more processors to invoke and execute the instructions from the memory to perform the method of any of claims 1 to 7.
10. A computer-readable storage medium, the computer-readable storage medium comprising:
program which, when executed by a processor, performs a method according to any one of claims 1 to 7.
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