A communication device based on adaptive power amplifier module

Abstract

The present invention discloses a communication device based on an adaptive power amplifier module, which relates to the technical field of power amplifiers, and includes a radio frequency signal input module, a radio frequency signal processing and analysis module, a step-type adaptive power amplifier module based on chip control, and a radio frequency signal transmitting module. The present invention first needs to control the step-type adaptive power amplifier module to perform initial operation according to the maximum amplification power. During the operation, the power amplification strategy instruction based on the gradient descent method is executed, and the amplification power that can be provided by the step-type adaptive power amplifier module is sequentially decreased to find the optimal balance point of power added efficiency and amplifier linearity, so that the radio frequency amplified signal transmitted by the radio frequency signal transmitting module is stable and of moderate intensity, and the heat loss, power added efficiency and amplifier linearity of the power amplifier itself are at a balance point; the reliability of the communication device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power amplifiers, and in particular to a communication device based on an adaptive power amplifier module. Background Art

[0002] The RF power amplifier (RF PA) is a key part of the wireless communication transmission system. Its main function is to amplify the low-power RF signal generated by the modulated oscillation circuit in order to obtain sufficient RF output power and feed it to the antenna for radiation. The design of the RF power amplifier focuses on improving output power and efficiency. Generally, an LC resonant circuit is used to achieve distortion-free amplification and minimize the harmonic components in the output to avoid interference with other channels.

[0003] Many traditional power amplifiers are not very efficient at amplifying signals, especially when dealing with nonlinear signals. This means they waste a lot of power when converting energy, generating heat, which reduces the overall system energy efficiency.

[0004] In wireless communication systems, the linearity of power amplifiers is very important. Nonlinear amplification will cause signal distortion, generate harmonics and intermodulation products, which will interfere with other communication channels and reduce communication quality.

[0005] Because power amplifiers are not very efficient, they generate a lot of heat during operation. If this heat is not managed effectively, it can cause the device to overheat, reduce performance, or even damage the amplifier.

[0006] Under high temperatures and varying operating conditions, power amplifier reliability may be reduced, which may lead to system failure and increased repair costs. Summary of the invention

[0007] In order to solve the technical problems of the above-mentioned traditional power amplifier, the present invention provides a communication device based on an adaptive power amplifier module. The following technical solutions are adopted:

[0008] A communication device based on an adaptive power amplifier module, comprising a radio frequency signal input module, a radio frequency signal processing and analysis module, a chip-controlled stepped adaptive power amplifier module and a radio frequency signal transmitting module;

[0009] The RF signal processing and analysis module is respectively connected to the RF signal input module, the step-type adaptive power amplifier module and the RF signal transmitting module for communication, collects and analyzes input signal parameters, transmitting signal parameters and power amplification parameters, and based on the power added efficiency and amplifier linearity indicators as optimization targets, interacts with the step-type adaptive power amplifier module for power amplification strategy instructions based on the gradient descent method. The step-type adaptive power amplifier module is connected to the RF signal processing and analysis module for communication, executes the power amplification strategy instructions based on the gradient descent method, and realizes optimal power added efficiency and amplifier linearity optimization adjustment based on the power added efficiency and amplifier linearity optimization feedback values ​​after each adjustment time of the RF signal processing and analysis module. The RF signal transmitting module is connected to the signal output end of the step-type adaptive power amplifier module for transmitting the amplified RF signal.

[0010] By adopting the above technical solution, the role of the RF signal processing and analysis module is to collect and analyze the input signal parameters, the transmission signal parameters and the power amplification parameters. In the task of power amplification of a relatively stable input signal source, it is first necessary to control the step-based adaptive power amplifier module to perform initial operation according to the maximum amplification power. During the operation, the RF signal processing and analysis module also needs to collect the transmission signal parameters and power amplification parameters of the step-based adaptive power amplifier module and the RF signal transmission module, execute the power amplification strategy instructions based on the gradient descent method, and sequentially decrease the amplification power that can be provided by the step-based adaptive power amplifier module to find the optimal balance point between the power added efficiency and the amplifier linearity, so that the RF amplified signal emitted by the RF signal transmission module is stable and of moderate intensity, and the heat loss, power added efficiency and amplifier linearity of the power amplifier itself are at a balance point, thereby improving the reliability of the communication device.

[0011] Optionally, the RF signal processing and analysis module includes an LNA low noise amplifier, a buffer and a data analysis chip. The input end of the LNA low noise amplifier communicates with the RF signal input module to interactively input the RF signal. The data input end of the buffer is communicatively connected to the data output end of the LNA low noise amplifier. The data analysis chip is communicatively connected to the buffer, the step-type adaptive power amplifier module and the RF signal transmitting module respectively, performs optimization analysis based on the RF input signal after noise reduction processing and the amplified RF transmitting signal, and communicates with the step-type adaptive power amplifier module to interactively provide power amplification strategy instructions.

[0012] By adopting the above technical solution, the LNA low noise amplifier can reduce the noise of the received input signal as much as possible, and has a certain signal amplification effect on weak input signals;

[0013] The LNA low noise amplifier also provides certain protection. For example, when the input signal is too strong, the LNA may automatically saturate, thereby preventing signal overload and protecting subsequent circuits from damage.

[0014] The data analysis chip can analyze the power added efficiency and amplifier linearity of the input signal, output signal and the amplifier's step-type adaptive power amplifier module based on the set analysis logic, formulate power amplification strategy instructions, and communicate with the step-type adaptive power amplifier module to exchange power amplification strategy instructions. After the step-type adaptive power amplifier module executes the power amplification strategy instructions, subsequent monitoring is performed, and when the input signal or output signal changes significantly, real-time power amplification strategy adjustments are made.

[0015] Optionally, the optimization analysis target of the data analysis chip is to balance the power added efficiency and the linearity index, wherein the calculation formula of the power added efficiency PAE is:

[0016] ;

[0017] in is the output power, is the input power, is the power supply;

[0018] The calculation formula of linearity index X is:

[0019] ;

[0020] in is the third-order calibration distortion value, a is the third-order calibration distortion weight, ACPR is the adjacent channel power ratio ACPR, and b is the adjacent channel power ratio weight;

[0021] Third-order calibration distortion value The calculation formula is:

[0022] ;

[0023] The calculation formula for adjacent channel power ratio ACPR is:

[0024] ;

[0025] in is the power of the third-order intermodulation distortion, The transistor amplifies the signal power. is the power of the adjacent channel;

[0026] The optimization goal is to maximize PAE while maintaining and ACPR are within the set range, and Value less than linearity threshold

[0027] By adopting the above technical solutions, when designing the power ladder, finding the balance between amplifier linearity and efficiency involves multiple parameters and optimization goals.

[0028] Power added efficiency (PAE) is a key indicator for measuring amplifier efficiency, and its optimization goal is to maximize it as much as possible; the value of power added efficiency (PAE) directly reflects the efficiency of the amplifier in converting input power into output power. The higher the PAE, the higher the efficiency of the amplifier in converting power, which means that under the same conditions, it can provide more useful signal power while reducing unnecessary energy loss, which is crucial to improving the overall efficiency and performance of the system.

[0029] When designing amplifier circuits, PAE and linearity often conflict with each other, so appropriate PAE trade-offs must be made based on the specific requirements of the system. When the amplitude is low, PAE may be reduced, even as low as half of the overall value, while the highest PAE value occurs when the amplitude is the highest. This shows that when designing and optimizing amplifiers, it is necessary to find a balance point so that the power added efficiency can be maximized while ensuring a certain linearity.

[0030] Linearity is measured by analyzing the third-order intermodulation distortion value and the adjacent channel power ratio ACPR feedback value.

[0031] Optionally, the optimization objective is formulated as:

[0032] ;

[0033] ;

[0034] ;

[0035] .

[0036] By adopting the above technical solution, the optimization goal can be based on the following optimization algorithm to automatically find the balance point:

[0037] Gradient descent method: Applicable to continuously differentiable optimization problems.

[0038] Genetic Algorithms: Suitable for global optimization problems, especially when the objective function is nonlinear and multimodal.

[0039] Particle Swarm Optimization: An optimization tool based on swarm intelligence, suitable for finding the global optimal solution.

[0040] Optionally, a stepped adaptive power amplifier module includes three bias resistors R1, R2, R3, a bias voltage source BIAS, three amplifier transistors Q1, Q2, Q3, three electrically controlled transistor access switches S1, S2, S3, a main control chip IC and an amplifier load L, the three bias resistors R1, R2, R3 are respectively used to set the static operating point of the transistor, the bias voltage source BIAS is used to provide an appropriate bias current, the amplification range of the three amplifier transistors Q1, Q2, Q3 is step-increasing, the data analysis chip is respectively connected to Q1, Q2, Q3 and the main control chip IC for communication, the main control chip IC respectively controls the execution actions of the three electrically controlled transistor access switches S1, S2, S3, so that one of the three amplifier transistors Q1, Q2, Q3 is operated, any two combinations are operated, or three are operated simultaneously, the bypass capacitor C is used to stabilize the bias circuit, and the amplifier load L is used to balance the heat loss of the amplifier.

[0041] By adopting the above technical solution, appropriate values ​​of R1, R2, and R3 are selected to ensure that transistor Q1 operates in class AB mode. The appropriate BIAS voltage is selected to ensure that the transistor operates linearly in the entire operating range.

[0042] Make sure the bias resistor value is large enough to avoid the transistor operating at the extreme value or saturation region.

[0043] When working, the main control chip IC controls the execution of the three electronically controlled transistors connected to the switches S1, S2, and S3 according to the analysis results of the data analysis chip, so that one of the three amplifier transistors Q1, Q2, and Q3 can be operated, any two combinations can be operated, or all three can be operated simultaneously, thereby achieving multi-step amplification gain results, and ultimately achieving maximum PAE while maintaining and ACPR are within the set range, and Value less than linearity threshold The optimization results are used to achieve adaptive power amplification.

[0044] Optionally, the amplifier transistor Q1 is high gain and high linearity, with a gain range of 45db-55db;

[0045] Amplifier transistor Q2 is medium gain medium linearity, gain range is 25db-35db;

[0046] Amplifier transistor Q3 is low gain and high linearity, with a gain range of 5db-15db;

[0047] The three amplifier transistors Q1, Q2, Q3 operate at the same frequency.

[0048] Optionally, the three electronically controlled transistors connected to the switches S1, S2, and S3 are MOS tubes respectively.

[0049] By adopting the above technical solution, the MOS tube can be turned on and off under signal control based on the control instruction.

[0050] Optionally, the stepped adaptive power amplifier module is provided with an external power selection switch S4, which is communicatively connected to the main control chip IC and is used to actively specify the signal amplification factor.

[0051] By adopting the above technical solution, the external power selection switch S4 can provide professional users with a manually selectable gain multiple switch during the use of the device. The default gear is adaptively adjusted and can be in the form of a knob switch.

[0052] Optionally, it also includes a temperature alarm module, which is used to detect the temperature of the step-type adaptive power amplifier module and communicate with the main control chip IC. When it is determined that the temperature is greater than the set temperature threshold, an alarm is issued, and an over-temperature signal is exchanged with the main control chip IC. The main control chip IC controls the amplifier transistor Q3 to work alone.

[0053] By adopting the above technical solution, the temperature alarm module can be linked with the detection step-type adaptive power amplifier module for control, so as to avoid abnormal high temperature of the equipment during the adaptive power adjustment process, thereby affecting the normal use of the equipment.

[0054] In summary, the present invention includes at least one of the following beneficial technical effects:

[0055] The present invention can provide a communication device based on an adaptive power amplifier module. The function of the radio frequency signal processing and analysis module is to collect and analyze input signal parameters, transmission signal parameters and power amplification parameters. First, it is necessary to control the step-based adaptive power amplifier module to perform initial operation according to the maximum amplification power. During the operation, the radio frequency signal processing and analysis module also needs to collect the transmission signal parameters and power amplification parameters of the step-based adaptive power amplifier module and the radio frequency signal transmission module, execute the power amplification strategy instruction based on the gradient descent method, and sequentially decrease the amplification power that can be provided by the step-based adaptive power amplifier module to find the optimal balance point between the power added efficiency and the amplifier linearity, so that the radio frequency amplified signal transmitted by the radio frequency signal transmission module is stable and of moderate intensity, and the heat loss, power added efficiency and amplifier linearity of the power amplifier itself are at a balance point.

[0056] The main control chip IC controls the execution of the three electronically controlled transistors connected to the switches S1, S2, and S3 according to the analysis results of the data analysis chip, so that one of the three amplifier transistors Q1, Q2, and Q3 can be operated, any two combinations can be operated, or all three can be operated simultaneously, thereby achieving multi-step amplification gain results, and ultimately achieving maximum PAE while maintaining and ACPR are within the set range, and Value less than linearity threshold The optimization results can realize adaptive power amplification and improve the reliability of communication devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a schematic diagram of the component connection principle of a communication device based on an adaptive power amplifier module of the present invention;

[0058] Figure 2 The present invention is a schematic diagram of the component connection principle of a step-type adaptive power amplifier module of a communication device based on an adaptive power amplifier module.

[0059] Explanation of the accompanying drawings: 1. RF signal input module; 2. RF signal processing and analysis module; 21. LNA low noise amplifier; 22. Buffer; 23. Data analysis chip; 3. Step-type adaptive power amplifier module; 4. RF signal transmission module; 5. Temperature alarm module. DETAILED DESCRIPTION

[0060] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0061] The embodiment of the invention discloses a communication device based on an adaptive power amplifier module.

[0062] Reference Figure 1 and Figure 2 , Embodiment 1, a communication device based on an adaptive power amplifier module, comprising a radio frequency signal input module 1, a radio frequency signal processing and analysis module 2, a chip-controlled stepped adaptive power amplifier module 3 and a radio frequency signal transmitting module 4;

[0063] The RF signal processing and analysis module 2 is respectively communicated with the RF signal input module 1, the step-type adaptive power amplifier module 3 and the RF signal transmitting module 4, collects and analyzes input signal parameters, transmitting signal parameters and power amplification parameters, and based on the power added efficiency and amplifier linearity indicators as optimization targets, interacts with the step-type adaptive power amplifier module 3 with power amplification strategy instructions based on the gradient descent method. The step-type adaptive power amplifier module 3 is communicated with the RF signal processing and analysis module 2, executes power amplification strategy instructions based on the gradient descent method, and optimizes the feedback value of the power added efficiency and amplifier linearity after each adjustment time of the RF signal processing and analysis module 2 to achieve optimal power added efficiency and amplifier linearity optimization adjustment. The RF signal transmitting module 4 is communicated with the signal output end of the step-type adaptive power amplifier module 3 to transmit the amplified RF signal.

[0064] The function of the RF signal processing and analysis module 2 is to collect and analyze the input signal parameters, the transmission signal parameters and the power amplification parameters. In the task of power amplifying a relatively stable input signal source, it is first necessary to control the step-type adaptive power amplifier module 3 to perform initial operation according to the maximum amplification power. During the operation, the RF signal processing and analysis module 2 also needs to collect the transmission signal parameters and power amplification parameters of the step-type adaptive power amplifier module 3 and the RF signal transmitting module 4, and execute the power amplification strategy instructions based on the gradient descent method. The amplification power that can be provided by the step-type adaptive power amplifier module 3 is sequentially decreased to find the optimal balance point between the power added efficiency and the amplifier linearity, so that the RF amplified signal emitted by the RF signal transmitting module 4 is stable and of moderate intensity, and the heat loss, power added efficiency and amplifier linearity of the power amplifier itself are at a balance point, thereby improving the reliability of the communication device.

[0065] In embodiment 2, the RF signal processing and analysis module 2 includes an LNA low noise amplifier 21, a buffer 22 and a data analysis chip 23. The input end of the LNA low noise amplifier 21 communicates and interacts with the RF signal input module 1 to input the RF signal. The data input end of the buffer 22 is communicated and connected with the data output end of the LNA low noise amplifier 21. The data analysis chip 23 is communicated and connected with the buffer 22, the step-type adaptive power amplifier module 3 and the RF signal transmitting module 4 respectively, performs optimization analysis based on the RF input signal after noise reduction processing and the amplified RF transmitting signal, and communicates and interacts with the step-type adaptive power amplifier module 3 to provide power amplification strategy instructions.

[0066] The LNA low noise amplifier 21 can reduce the noise of the received input signal as much as possible, and has a certain signal amplification effect on weak input signals;

[0067] The LNA low noise amplifier 21 also provides certain protection functions. For example, when the input signal is too strong, the LNA may automatically saturate, thereby preventing signal overload and protecting subsequent circuits from damage.

[0068] The data analysis chip 23 can analyze the power added efficiency and amplifier linearity of the input signal, output signal and the amplifier's step-type adaptive power amplifier module 3 based on the set analysis logic, formulate power amplification strategy instructions, and communicate with the step-type adaptive power amplifier module 3 to interact with the power amplification strategy instructions. After the step-type adaptive power amplifier module 3 executes the power amplification strategy instructions, subsequent monitoring is performed, and when the input signal or output signal changes significantly, real-time power amplification strategy adjustments are made.

[0069] In Example 3, the optimization analysis target of the data analysis chip 23 is to balance the power added efficiency and the linearity index, wherein the calculation formula of the power added efficiency PAE is:

[0070] ;

[0071] in is the output power, is the input power, is the power supply;

[0072] The calculation formula of linearity index X is:

[0073] ;

[0074] in is the third-order calibration distortion value, a is the third-order calibration distortion weight, ACPR is the adjacent channel power ratio ACPR, and b is the adjacent channel power ratio weight;

[0075] Third-order calibration distortion value The calculation formula is:

[0076] ;

[0077] The calculation formula for adjacent channel power ratio ACPR is:

[0078] ;

[0079] in is the power of the third-order intermodulation distortion, The transistor amplifies the signal power. is the power of the adjacent channel;

[0080] The optimization goal is to maximize PAE while maintaining and ACPR are within the set range, and Value less than linearity threshold .

[0081] When designing a power ladder, finding the balance between amplifier linearity and efficiency involves multiple parameters and optimization goals.

[0082] Power added efficiency (PAE) is a key indicator for measuring amplifier efficiency, and its optimization goal is to maximize it as much as possible; the value of power added efficiency (PAE) directly reflects the efficiency of the amplifier in converting input power into output power. The higher the PAE, the higher the efficiency of the amplifier in converting power, which means that under the same conditions, it can provide more useful signal power while reducing unnecessary energy loss, which is crucial to improving the overall efficiency and performance of the system.

[0083] When designing amplifier circuits, PAE and linearity often conflict with each other, so appropriate PAE trade-offs must be made based on the specific requirements of the system. When the amplitude is low, PAE may be reduced, even as low as half of the overall value, while the highest PAE value occurs when the amplitude is the highest. This shows that when designing and optimizing amplifiers, it is necessary to find a balance point so that the power added efficiency can be maximized while ensuring a certain linearity.

[0084] Linearity is measured by analyzing the third-order intermodulation distortion value and the adjacent channel power ratio ACPR feedback value.

[0085] Example 4, the formula for optimizing the objective is expressed as:

[0086] ;

[0087] ;

[0088] ;

[0089] .

[0090] The optimization goal can be based on To automatically find the balance point, the following optimization algorithms can be used:

[0091] Gradient descent method: Applicable to continuously differentiable optimization problems.

[0092] Genetic Algorithms: Suitable for global optimization problems, especially when the objective function is nonlinear and multimodal.

[0093] Particle Swarm Optimization: An optimization tool based on swarm intelligence, suitable for finding the global optimal solution.

[0094] Embodiment 5, the step-type adaptive power amplifier module 3 includes three bias resistors R1, R2, R3, a bias voltage source BIAS, three amplifier transistors Q1, Q2, Q3, three electrically controlled transistor access switches S1, S2, S3, a main control chip IC and an amplifier load L, the three bias resistors R1, R2, R3 are respectively used to set the static operating point of the transistor, the bias voltage source BIAS is used to provide an appropriate bias current, the amplification range of the three amplifier transistors Q1, Q2, Q3 is step-increasing, the data analysis chip 23 is respectively connected to Q1, Q2, Q3 and the main control chip IC for communication, the main control chip IC respectively controls the execution actions of the three electrically controlled transistor access switches S1, S2, S3, so that one of the three amplifier transistors Q1, Q2, Q3 is operated, any two combinations are operated, or three are operated simultaneously, the bypass capacitor C is used to stabilize the bias circuit, and the amplifier load L is used to balance the heat loss of the amplifier.

[0095] Choose appropriate values ​​of R1, R2, and R3 to ensure that transistor Q1 operates in class AB mode. Choose appropriate BIAS voltage to ensure that the transistor operates linearly over the entire operating range.

[0096] Make sure the bias resistor value is large enough to avoid the transistor operating at the extreme value or saturation region.

[0097] When working, the main control chip IC controls the execution of the three electronically controlled transistors accessing switches S1, S2, and S3 according to the analysis results of the data analysis chip 23, so that one of the three amplifier transistors Q1, Q2, and Q3 is operated, any two combinations are operated, or all three are operated simultaneously, thereby achieving a multi-step amplification gain result, and finally achieving maximum PAE while maintaining and ACPR are within the set range, and Value less than linearity threshold The optimization results are used to achieve adaptive power amplification.

[0098] In Example 6, the amplifier transistor Q1 is high gain and high linearity, and the gain range is 45db-55db;

[0099] Amplifier transistor Q2 is medium gain medium linearity, gain range is 25db-35db;

[0100] Amplifier transistor Q3 is low gain and high linearity, with a gain range of 5db-15db;

[0101] The three amplifier transistors Q1, Q2, Q3 operate at the same frequency.

[0102] In embodiment 7, the three electronically controlled transistors connected to the switches S1, S2 and S3 are MOS transistors respectively.

[0103] MOS tubes can be turned on and off under signal control based on control instructions.

[0104] In the eighth embodiment, the step-type adaptive power amplifier module 3 is provided with an external power selection switch S4, which is connected to the main control chip IC for actively specifying the signal amplification factor.

[0105] The external power selection switch S4 can provide a manually selectable gain multiple switch for professional users during the use of the device. The default gear is an adaptive gear adjustment gear, which can be in the form of a knob switch.

[0106] Embodiment 9 also includes a temperature alarm module 5, which is used to detect the temperature of the step-type adaptive power amplifier module 3 and communicate with the main control chip IC. When it is determined that the temperature is greater than the set temperature threshold, an alarm is issued, and an over-temperature signal is exchanged with the main control chip IC. The main control chip IC controls the amplifier transistor Q3 to work alone.

[0107] The temperature alarm module 5 can be linked with the detection step-type adaptive power amplifier module 3 for control, so as to avoid abnormal high temperature of the equipment during the adaptive power adjustment process, thereby affecting the normal use of the equipment.

[0108] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A communication device based on an adaptive power amplifier module, characterized in that: It comprises a radio frequency signal input module (1), a radio frequency signal processing and analysis module (2), a chip-controlled stepped adaptive power amplifier module (3) and a radio frequency signal transmission module (4); The radio frequency signal processing and analysis module (2) is respectively connected in communication with the radio frequency signal input module (1), the step-type adaptive power amplifier module (3) and the radio frequency signal transmitting module (4), collects and analyzes input signal parameters, transmitting signal parameters and power amplification parameters, and based on the power added efficiency and amplifier linearity index as optimization targets, exchanges power amplification strategy instructions based on the gradient descent method with the step-type adaptive power amplifier module (3); the step-type adaptive power amplifier module (3) is connected in communication with the radio frequency signal processing and analysis module (2), executes the power amplification strategy instructions based on the gradient descent method, and realizes optimal power added efficiency and amplifier linearity optimization adjustment based on the power added efficiency and amplifier linearity optimization feedback value after each adjustment time of the radio frequency signal processing and analysis module (2); the radio frequency signal transmitting module (4) is connected in communication with the signal output end of the step-type adaptive power amplifier module (3), and transmits the amplified radio frequency signal; The radio frequency signal processing and analysis module (2) comprises an LNA low noise amplifier (21), a buffer (22) and a data analysis chip (23); the input end of the LNA low noise amplifier (21) communicates and interacts with the radio frequency signal input module (1) to input radio frequency signals; the data input end of the buffer (22) is communicatively connected to the data output end of the LNA low noise amplifier (21); the data analysis chip (23) is communicatively connected to the buffer (22), the step-type adaptive power amplifier module (3) and the radio frequency signal transmission module (4) respectively, performs optimization analysis based on the radio frequency input signal after noise reduction processing and the radio frequency transmission signal after amplification, and communicates and interacts with the step-type adaptive power amplifier module (3) to transmit power amplification strategy instructions; The optimization analysis target of the data analysis chip (23) is to balance the power added efficiency and the linearity index, wherein the calculation formula of the power added efficiency PAE is: ； in is the output power, is the input power, is the power supply; The calculation formula of linearity index X is: ； in is the third-order calibration distortion value, a is the third-order calibration distortion weight, ACPR is the adjacent channel power ratio ACPR, and b is the adjacent channel power ratio weight; Third-order calibration distortion value The calculation formula is: ； The calculation formula for adjacent channel power ratio ACPR is: ； in is the power of the third-order intermodulation distortion, The transistor amplifies the signal power. is the power of the adjacent channel; The optimization goal is to maximize PAE while maintaining and ACPR are within the set range, and the X value is less than the linearity threshold ; The optimization objective is expressed as: ； ； ； ； The step-type adaptive power amplifier module (3) comprises three bias resistors R1, R2, R3, a bias voltage source BIAS, three amplifier transistors Q1, Q2, Q3, three electrically controlled transistor access switches S1, S2, S3, a main control chip IC and an amplifier load L. The three bias resistors R1, R2, R3 are respectively used to set the static operating point of the transistors. The bias voltage source BIAS is used to provide an appropriate bias current. The amplification factor ranges of the three amplifier transistors Q1, Q2, Q3 are increased in steps. The data analysis chip (23) is respectively connected to Q1, Q2, Q3 and the main control chip IC for communication. The main control chip IC controls the execution actions of the three electrically controlled transistor access switches S1, S2, S3 to enable one of the three amplifier transistors Q1, Q2, Q3 to operate, any two combinations to operate, or all three to operate simultaneously. The bypass capacitor C is used to stabilize the bias circuit. The amplifier load L is used to balance the heat loss of the amplifier.

2. A communication device based on an adaptive power amplifier module according to claim 1, characterized in that: Amplifier transistor Q1 is high gain and high linearity, with a gain range of 45db-55db; Amplifier transistor Q2 is medium gain medium linearity, gain range is 25db-35db; Amplifier transistor Q3 is low gain and high linearity, with a gain range of 5db-15db; The three amplifier transistors Q1, Q2, Q3 operate at the same frequency.

3. A communication device based on an adaptive power amplifier module according to claim 2, characterized in that: The three electronically controlled transistors connected to the switches S1, S2 and S3 are MOS tubes respectively.

4. A communication device based on an adaptive power amplifier module according to claim 3, characterized in that: The stepped adaptive power amplifier module (3) is provided with an external power selection switch S4, which is communicatively connected to the main control chip IC and is used to actively specify the signal amplification factor.

5. A communication device based on an adaptive power amplifier module according to claim 4, characterized in that: It also includes a temperature alarm module (5), which is used to detect the temperature of the stepped adaptive power amplifier module (3) and is connected to the main control chip IC for communication. When it is determined that the temperature is greater than a set temperature threshold, an alarm is generated, and an over-temperature signal is exchanged with the main control chip IC. The main control chip IC controls the amplifier transistor Q3 to work alone.

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