CN100461624C - Method for optimizing radio frequency power amplifier and radio frequency power amplifier system - Google Patents

Abstract

The invention discloses a method for optimizing a radio frequency power amplifier. The method comprises: the power amplifier receives actual operating frequency point; and adjusts the performance parameter of the power amplifier according to the received information of the actual operating frequency point. The invention also discloses a radio frequency power amplifier system, which obtains the actual operating frequency point information through the baseband and the control module, and transmits the obtained actual operating frequency point information to the power amplifier control unit of the power amplifier through the interface circuit. Working frequency point information to determine the most suitable working performance parameters to optimize the input and output characteristics of the power amplifier. The present invention realizes the dynamic optimization of the power amplifier through the closed-loop control, makes the power amplifier more flexibly applicable to the change of working frequency in different workplaces, and tries to reflect the excellent characteristics of the power amplifier in different workplaces.

Description

Method for optimizing radio frequency power amplifier and radio frequency power amplifier system

technical field

The invention relates to a radio frequency power amplifier technology, in particular to a method for optimizing a radio frequency power amplifier and a radio frequency power amplifier system.

Background technique

In this paper, the radio frequency power amplifier is referred to simply as the power amplifier.

In the wireless base station system, the power amplifier is a device used to amplify the small signal of the transmitter to a certain power. The function of the power amplifier is to amplify the radio frequency signal from the transmitter as much as possible without distortion. Hereinafter, the power amplifier is simply referred to as the power amplifier.

Fig. 1 is a schematic diagram of the application of the power amplifier in the prior art in the wireless base station system, wherein the power amplifier is mainly composed of five modules: an amplifier module 12, a gain control circuit 13, an alarm protection circuit 14, a linearization module 15 and a central control module 16, The gain control circuit 13 , the alarm protection circuit 14 , the linearization module 15 and the central control module 16 may be referred to as a power amplifier control unit. The functions of each module are described below:

Gain control circuit 13 is used to control gain and gain flatness; Alarm protection circuit 14 monitors the working state of power amplifier; Linearization module 15 is used for setting and distortion detection of fixed pilot frequency; Amplifier module 12 according to gain control from The performance adjustment parameters of the circuit 13 and the linearization module 15 optimize the working performance of the amplifier, and then output the input radio frequency signal after amplifying. The input end of the amplifier module 12 is the signal input end of the power amplifier; the central control module 16 is used to coordinate the above-mentioned The modules work together.

In the wireless base station system, as shown in Figure 1, the power amplifier of the prior art processes the radio frequency signal as follows: the baseband and control system 10 encodes the signal to generate a baseband signal, and the transmitter 11 sends the signal from the baseband and control system The baseband signal of 10 is modulated to an intermediate frequency or radio frequency, and then the intermediate frequency or radio frequency signal is sent to the amplifier module 12, and the amplifier module 12 amplifies the input intermediate frequency or radio frequency signal and outputs it.

The amplification quality of IF or RF signals depends on the performance parameters of the power amplifier, and the performance parameters of the power amplifier are closely related to the bandwidth.

Bandwidth limitation is an inherent characteristic of power amplifiers, and power amplifier performance parameters such as power gain, linearity, and efficiency are closely related to bandwidth. Take the gain flatness of the power amplifier as an example. If the working bandwidth of the power amplifier is very wide, the gain flatness is not easy to do well. Generally, the low-end gain of the frequency is high, and the high-end gain of the frequency is low. The wider the bandwidth, the greater the difference, resulting in the power amplifier. The linearity is poor, which causes the amplification of the radio frequency signal to be distorted.

In order to achieve distortion-free amplification of radio frequency signals, the power amplifier needs to optimize its performance parameters. Generally speaking, within a certain bandwidth range, the performance requirements of the bandwidth for the power amplifier are met through debugging the power amplifier. For example, for gain flatness compensation, you can first scan the corresponding relationship between the gain and frequency of the power amplifier during debugging. After obtaining the frequency information, you can improve the gain flatness by adjusting the gain control circuit. If the bandwidth is too wide, you can only compromise on power gain, linearity, efficiency, etc. However, this will inevitably cause the performance of the power amplifier to not be fully utilized.

With the increase of the amount of wirelessly transmitted information, the bandwidth allocated by the wireless communication system is getting larger and larger, which requires the power amplifier to meet specific performance indicators within a wider bandwidth. However, for most wireless communication systems, each power amplifier usually only uses a small part of the allocated bandwidth in the actual use environment. If it can be optimized for a specific power amplifier, it is possible to improve the performance of the power amplifier.

At present, there are two ways to solve the discomfort caused by the bandwidth to the application of the power amplifier:

One method is to optimize the practical application of the power amplifier by using a fixed pilot frequency. Power amplifiers are generally developed for specific purposes. For example, the 900MHz GSM power amplifier has a specified bandwidth of 35MHz. The method sets fixed pilots on the out-of-band edge of the specified frequency band, and controls the power gain, linearity, and phase adjustment of the power amplifier by extracting the output parameters of the fixed pilots, so that the working state of the power amplifier can meet the requirements as much as possible.

Here the fixed pilot can be set in the linearization module 15 of the power amplifier. In the prior art, for different power amplifiers, relevant fixed pilot information has been set for the pilot source. When the power amplifier is used, the central control module 16 obtains a fixed After the pilot information, control the phase-locked loop (PLL) of the pilot circuit part in the linearization module 15, so that the PLL is locked on the fixed pilot, and the fixed pilot is set like this. The linearization module 15 sends the set fixed pilot frequency to the amplifier module 12 for amplification, and then the central control module 16 extracts the fixed pilot frequency output parameters through the linearization module 15 and the amplifier module 12, and controls the gain control circuit according to the pilot frequency output parameters 13 to control the power gain, linearity, phase and other parameter adjustments of the power amplifier.

The fixed pilot is set outside the specified frequency band and close to the specified frequency band. On the one hand, in terms of efficacy, the closer to the edge of the frequency band, the better, because it can truly reflect the characteristics of the working frequency band; on the other hand, if the fixed pilot is set In the band, it may cause interference to the useful signal, because the working frequency band is an unpredictable frequency band within the specified frequency band. It can be seen that in order to truly reflect the in-band characteristics of this method, the power amplifier should make the relationship between input and output as flat as possible in the entire specified frequency band including the fixed pilot. This will inevitably increase the difficulty of adjustment and increase the processing cost. There is a compromise in performance. More importantly, for the in-band, this is an unstable open-loop control. If there is a change in the characteristics of the power amplifier, it cannot be reflected on the fixed pilot.

Another approach is the case of no pilot. This method relies on production debugging to meet performance requirements such as gain and linearity in the specified frequency band, and uses temperature compensation to eliminate temperature changes. The advantage is that it is completely transparent to the system. This method can save the pilot circuit used to set the fixed pilot in the linearization module 15, thereby reducing the cost of materials and avoiding the possibility of spurs caused by the pilot. However, this method can generally only be used in systems with narrow bandwidth, small temperature changes in the working environment, and low requirements. Otherwise, the debugging is very complicated, the processing cost is high, and the performance cannot be guaranteed.

It can be seen from the two methods for optimizing the power amplifier in the prior art that either the second method is completely using manual debugging, or the first method is using a fixed pilot frequency to optimize the performance of the power amplifier. The method of manual debugging is obviously affected by environmental and human factors. For example, the temperature difference between the temperature during debugging and the ambient temperature of the power amplifier field application will have some impact on the parameters that were debugged at that time, thus affecting the performance of the power amplifier. , and this method is only suitable for occasions with narrow bandwidth and low requirements; if the method of setting a fixed pilot frequency is used, the complicated debugging work will be saved, but this method is an open-loop control method, that is, when the actual When the working frequency band changes, the fixed pilot frequency cannot produce any adjustment effect on the working performance of the power amplifier.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for optimizing a power amplifier, which can complete the dynamic optimization of the power amplifier. That is, the method can flexibly set the pilot frequency of the power amplifier according to the actual working frequency, so as to realize the dynamic adjustment of the performance parameters of the power amplifier.

Another object of the present invention is to provide a power amplifier system, which can make the power amplifier achieve higher working performance with minimal hardware increase.

In order to achieve the above object, the technical solution of the present invention is specifically realized in the following way:

A method for optimizing a radio frequency power amplifier, the method comprising the steps of:

A. The RF power amplifier receives the actual operating frequency point;

B. The radio frequency power amplifier processes the received actual working frequency point to expand the frequency range, sets the pilot frequency according to the processed frequency point information, and adjusts the performance parameters of the radio frequency power amplifier according to the pilot frequency signal.

In step A, after the radio frequency power amplifier receives the actual operating frequency point, the method further includes: storing the received information about the actual operating frequency point.

A working frequency band register is set in the radio frequency power amplifier, and the received actual working frequency point information is stored in the working frequency band register.

The process of expanding the frequency range in step B is to increase or decrease the actual operating frequency point by a specified frequency point.

The method for setting the pilot frequency described in step B includes:

Send the processed frequency point signal to the phase-locked loop of the pilot circuit in the original linearization module of the radio frequency power amplifier, so that the phase-locked loop is locked on the pilot.

The method for adjusting the performance parameters of the radio frequency power amplifier according to the pilot signal in step B:

Amplify the set pilot signal, then extract the amplified pilot output parameters, and control the adjustment of the gain, gain flatness, and phase parameters of the power amplifier according to the pilot output parameters.

A method for optimizing a radio frequency power amplifier, which divides the specified frequency of the radio frequency power amplifier into several small frequency bands, and stores the corresponding performance parameters for adjusting the radio frequency power amplifier in each divided small frequency band and stores them in the calibration table register; the Methods also include:

b. The RF power amplifier receives the actual operating frequency point;

b. The radio frequency power amplifier selects the performance parameter of the radio frequency power amplifier corresponding to the small frequency band that matches the stored information of the actual operating frequency point as the performance parameter of the current radio frequency power amplifier. The method also includes before the method: setting a calibration table register in the radio frequency power amplifier; the performance parameters corresponding to the adjustment of the radio frequency power amplifier on each small frequency band after the division are stored in the calibration table register

A system of a radio frequency power amplifier, the system includes a baseband and a control system, and a radio frequency power amplifier, wherein the radio frequency power amplifier includes a power amplifier control unit and an amplifier module, and the system also includes:

The first interface circuit: located in the baseband and control system, used to send the actual operating frequency point to the RF power amplifier;

The second interface circuit: located in the RF power amplifier, used to receive the actual operating frequency point from the baseband and control system;

The second interface circuit sends the received actual operating frequency point information from the first interface circuit to the power amplifier control unit;

The power amplifier control unit receives the information of the actual operating frequency point from the second interface circuit, processes the actual operating frequency point to expand the frequency range, sets the pilot frequency according to the processed frequency point information, and adjusts the performance parameters of the amplifier module according to the pilot frequency signal. make adjustments;

The amplifier module receives the adjusted performance parameter from the power control unit, amplifies the external frequency signal according to the performance parameter, and outputs it.

The power amplifier control unit includes:

Central control module: receiving the actual working frequency point from the second interface circuit, processing the actual working frequency point to expand the frequency range, and sending the processed frequency point information to the linearization module;

Linearization module: Receive the frequency point information processed by the central control module, set the pilot frequency according to the frequency point information, and then send the set pilot frequency signal to the amplifier module for amplification;

The central control module extracts the pilot frequency amplification output parameters through the linearization module and the amplifier module, and sends the pilot frequency amplification output parameters to the gain control circuit;

Gain control circuit: receiving the pilot amplification output parameters extracted by the central control module, and controlling the gain and gain flatness of the radio frequency power amplifier according to the pilot amplification output parameters.

The power amplifier control unit further includes: a working frequency band register: receiving the actual working frequency point information from the central control module and storing the actual working frequency point information locally.

A system of a radio frequency power amplifier, the system includes a baseband and a control system, and a radio frequency power amplifier, wherein the radio frequency power amplifier includes a power amplifier control unit and an amplifier module, and the system also includes:

The first interface circuit: located in the baseband and control system, used to send the actual operating frequency point to the RF power amplifier;

The second interface circuit: located in the RF power amplifier, used to receive the actual operating frequency point from the baseband and control system;

The second interface circuit sends the received actual operating frequency point information from the first interface circuit to the power amplifier control unit;

The power amplifier control unit receives the actual operating frequency point information from the second interface circuit, and the RF power amplifier selects the RF power amplifier performance parameter corresponding to the small frequency band that matches the stored actual operating frequency point information as the current RF power amplifier performance parameter.

The amplifier module receives the adjusted performance parameter from the power control unit, amplifies the external frequency signal according to the performance parameter, and outputs it.

The power amplifier control unit includes:

Calibration table register: store parameters for optimizing the radio frequency power amplifier corresponding to each small frequency band divided in the specified frequency of the radio frequency power amplifier;

According to the received actual operating frequency point, the central control module selects the RF power amplifier performance parameter corresponding to the small frequency band that matches the stored actual operating frequency point information as the performance parameter of the current RF power amplifier, and sends the parameter through the central control module to the gain control circuit;

The gain control circuit receives the performance parameters from the central control module, and controls the gain and gain flatness of the radio frequency power amplifier according to the performance parameters.

It can be seen from the above-mentioned technical scheme that the method for optimizing the power amplifier and the power amplifier system of the present invention first obtain specific operating frequency point information, and transmit the obtained operating frequency point information to the power amplifier control unit of the power amplifier through the interface circuit, and the power amplifier According to the specific operating frequency point information, the most suitable performance parameters are determined to optimize the input and output characteristics of the power amplifier. The present invention realizes the dynamic optimization of the power amplifier through the closed-loop control, makes the power amplifier more flexibly applicable to the change of the working frequency in different workplaces, and tries to reflect the excellent characteristics of the power amplifier in different workplaces.

Description of drawings

FIG. 1 is a schematic diagram of the prior art power amplifier used in a wireless base station system;

Fig. 2 is a schematic diagram of the system of the preferred embodiment 1 of the present invention;

Fig. 3 is the flow chart of the method of preferred embodiment 1 of the present invention;

Fig. 4 is a flow chart of the method in the second preferred embodiment of the present invention.

Detailed ways

The core idea of the present invention is: the power amplifier first obtains specific operating frequency point information, and then optimizes the input and output characteristics of the power amplifier by determining the most suitable power amplifier performance parameters according to the specific operating frequency point information.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

Preferred embodiment one:

Fig. 2 is the system diagram of preferred embodiment 1 of the present invention, preferred embodiment 1 includes existing central control module 26, gain control circuit 23, alarm protection circuit 24, linearization module 25 and amplifier module 22 in power amplifier , wherein the gain control circuit 23, the alarm protection circuit 24, the linearization module 25 and the central control module 26 can be called a power amplifier control unit, the system also includes an interface circuit 29, and a register 1 is also included in the power amplifier control unit. And the interface circuit 201 also included in the control module 20 . In this embodiment, the register 1 is composed of a working frequency band register 28 and a calibration table register 27 .

Wherein, in the calibration table register 27, the parameters corresponding to the optimization of the power amplifier on each small frequency band divided in the specified frequency of the power amplifier are stored; the actual operating frequency point information is stored in the operating frequency band register 28; the interface circuit 29 corresponds to the interface circuit 201 Here, the correspondence means that the types and communication protocols of the interface circuit 29 and the interface circuit 201 are consistent; A connection relationship is established between them, and through this connection relationship, the baseband and control module 20 sends the actual operating frequency point information to the power amplifier and stores it in the operating frequency band register 28 .

One thing needs to be explained, if there are free communication interfaces in the baseband and control module 20 and the power amplifier, and the type is consistent with the communication protocol, then only a control line and corresponding data sending and receiving processing need to be added between the two interfaces. Yes; in addition, if both the interface circuit 29 and the interface circuit 201 adopt a wireless transmission method, such as infrared communication, the control line may not be connected.

The specific working steps of the preferred embodiment 1 of the present invention will be described below with reference to FIG. 3 . It is assumed that both the interface circuit 29 and the interface circuit 201 adopt the serial port communication mode, and the two interface circuits are connected by a control line.

In conjunction with the flow chart of the first preferred embodiment of the present invention in FIG. The adjustment information is matched, and the performance adjustment information corresponding to the frequency segment closest to the actual operating frequency point information is selected as a parameter for optimizing the amplifier module 22 . The specific implementation is as follows:

Step 300: Store in the calibration table register 27 corresponding performance parameters optimized for the power amplifier in each small frequency band divided by the specified frequency of the power amplifier.

This step is completed during the debugging stage of the power amplifier, and is calibrated by an external power meter or network analyzer. For example: first divide the specified frequency of the power amplifier into small frequency bands one by one, and select an intermediate value in each small frequency band as the input frequency signal Input to the power amplifier, by detecting the characteristics of the amplified output signal, the performance parameters such as gain and phase of the power amplifier at the input frequency signal are adjusted. To determine the corresponding best performance parameter of the power amplifier at the frequency point, and establish a one-to-one correspondence between the adjusted best performance parameter of the power amplifier and the frequency segment and store it in the calibration table register. By repeating the above process, the best performance parameters of the power amplifier corresponding to each divided small frequency band can be stored in the calibration table register 27, and a one-to-one correspondence relationship with the frequency bands where these parameters are located can be established.

Here, the corresponding relationship can be reflected by establishing a database table, such as establishing a database table with the frequency band and the power amplifier performance parameter set as indexes.

In addition, the selection of the length of the small frequency band depends on the performance requirements of the power amplifier application. In the case of high performance requirements, the small frequency band can be made shorter, that is, there will be more small frequency bands in the specified frequency of a certain power amplifier. Some; on the contrary, the small frequency band can be obtained longer.

Step 301 : Through the communication between the interface circuit 29 and the interface circuit 201 , transmit the actual working frequency point to the power amplifier, and store it in the working frequency band register 28 .

In this step, for example, if the power amplifier is applied in a wireless base station system, then the base station controller will send the actual operating frequency point information to the baseband and control system, and the baseband and control system will send the obtained actual operating frequency point information through the interface circuit 201 For the power amplifier, the power amplifier stores the received information of the actual working frequency point in the working frequency band register 28 .

Step 302: according to the actual operating frequency point information stored in the operating frequency band register 28, match it with the specified small frequency band stored in the calibration register 27, select a frequency segment where the frequency point information falls, and use the frequency segment The corresponding power amplifier performance parameters are used as optimization parameters of the current power amplifier.

The first preferred embodiment is a method of pre-storing the performance parameters of the power amplifier, and then selecting the performance parameters according to the actual operating frequency point to optimize the power amplifier.

Preferred embodiment two:

Referring to the system schematic diagram of the preferred embodiment one of the present invention shown in Fig. 2, the preferred embodiment two is based on the preferred embodiment one shown in Fig. It consists of a working frequency band register 28, where the working frequency band register is also used to store the information of the actual working frequency point.

The specific working steps of the second preferred embodiment of the present invention will be described below with reference to FIG. 4 . It is assumed that both the interface circuit 29 and the interface circuit 201 adopt the serial port communication mode, and the two interface circuits are connected by a control line.

In conjunction with the flow chart of the preferred embodiment 2 of the present invention in Fig. 4, this embodiment sets the pilot frequency according to the actual operating frequency point information, then adjusts the power amplifier according to the pilot frequency information, and uses the adjusted performance parameters as the current power amplifier optimization Parameters, the specific implementation is as follows:

Step 400 : Through the communication between the interface circuit 29 and the interface circuit 201 , transmit the actual working frequency point to the power amplifier, and store it in the working frequency band register 28 .

Step 401: Set a pilot frequency according to the stored actual operating frequency point information.

In this step, in order to make the set pilot frequency outside the actual working frequency band and close to the edge of the actual working frequency band, so as to better truly reflect the in-band characteristics, the central control module 26 stores the actual working frequency point in the working frequency band register 28 The information is processed by expanding the frequency range, such as increasing the frequency point information of the specified number or reducing the frequency point information of the specified number, and then the calculated frequency point information is sent to the pilot circuit part in the linearization module 25 as the pilot information. A phase-locked loop (PLL), which makes the PLL lock on the processed actual operating frequency point information, so that the pilot frequency is set.

In this step, the calculated frequency point information is sent to the phase-locked loop (PLL) of the pilot circuit part in the linearization module 25, so that the PLL is locked on the processed actual working frequency point information. This part belongs to the prior art content.

Step 402: optimize the power amplifier according to the set pilot frequency.

In this step, the central control module 26 transmits the set pilot frequency to the amplifier module 22, through the amplification of the pilot frequency signal by the amplifier module 22, then the central control module 26 extracts the pilot frequency output parameters by the linearization module 25 and the amplifier module 22 , and control the gain control circuit 23 according to the pilot output parameters to control the adjustment of parameters such as the gain, gain flatness, and phase of the power amplifier. This part of the content belongs to the prior art.

The pilot frequency of preferred embodiment 2 is set near the actual working frequency point, so the working state of the pilot frequency can better reflect the working state of the actual working frequency, that is, the optimization of the power amplifier by the pilot frequency is effective for the actual work. The frequency is also suitable. In this way, the purpose of optimizing the power amplifier in the present invention is achieved.

As can be seen from the above two embodiments, the present invention communicates between the interface circuit 29 and the interface circuit 201, the baseband and the control system transmit the actual operating frequency point information to the power amplifier, and the power amplifier uses the actual operating frequency point information to The parameters of the power amplifier are optimized to achieve the best working state of the power amplifier, thereby further guaranteeing the distortion-free amplification of the radio frequency signal input into the power amplifier to a greater extent.

To illustrate, once the power amplifier is powered on, the performance parameters of the power amplifier can be optimized using the method of the present invention, and then enter the normal working state of the power amplifier.

During the normal operation of the power amplifier, the actual working frequency point information can be extracted and compared regularly. If the actual working frequency point changes, the performance parameters will be re-optimized; the interrupt method can also be used. When the actual working frequency point changes, Enter the interrupt service processing, and re-optimize the performance parameters of the power amplifier in the interrupt service processing. Therefore, it can be seen that the present invention is a closed-loop dynamic power amplifier optimization processing method, which improves the adaptability of the power amplifier to changes in the workplace.

In addition, if the storage capacity of the internal memory of the central control module 26 is large enough, the internal memory of the central control module 26 can also be used as the working frequency band register and the calibration table register.

The system and method of the invention are also applicable to the optimization of power amplifiers in the fields of microwave, satellite communication and the like.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (13)

1. a method for optimizing radio frequency power amplifier, is characterized in that, the method comprises the following steps: A. The RF power amplifier receives the actual operating frequency point; B. The radio frequency power amplifier processes the received actual working frequency point to expand the frequency range, sets the pilot frequency according to the processed frequency point information, and adjusts the performance parameters of the radio frequency power amplifier according to the pilot frequency signal. 2. The method according to claim 1, wherein in step A, after the radio frequency power amplifier receives the actual operating frequency point, the method further comprises: storing the received information about the actual operating frequency point. 3. The method according to claim 2, characterized in that: a working frequency band register is set in the radio frequency power amplifier, and the received actual working frequency point information is stored in the working frequency band register. 4. The method according to claim 1, characterized in that, the process of expanding the frequency range in step B is to increase or decrease the actual operating frequency point by a specified frequency point. 5. The method according to claim 1 or 4, characterized in that the method for setting pilots described in step B comprises: Send the processed frequency point signal to the phase-locked loop of the pilot circuit in the original linearization module of the radio frequency power amplifier, so that the phase-locked loop is locked on the pilot. 6. method according to claim 1, is characterized in that, the method that radio frequency power amplifier performance parameter is adjusted according to pilot frequency signal in the step B: Amplify the set pilot signal, then extract the amplified pilot output parameters, and control the adjustment of the gain, gain flatness, and phase parameters of the power amplifier according to the pilot output parameters. 7. A method for optimizing radio frequency power amplifier, is characterized in that, radio frequency power amplifier regulation frequency is divided into some small frequency bands, and store the corresponding performance parameter that radio frequency power amplifier is adjusted on each small frequency band after dividing; Methods also include: a. RF power amplifier receives the actual working frequency point; b. The radio frequency power amplifier selects the performance parameter of the radio frequency power amplifier corresponding to the small frequency band that matches the stored information of the actual operating frequency point as the performance parameter of the current radio frequency power amplifier. 8. The method according to claim 7, further comprising: setting the calibration table register in the radio frequency power amplifier before the method; The performance parameters for adjusting the radio frequency power amplifier corresponding to each divided small frequency band are stored in the calibration table register. 9. A system of radio frequency power amplifier, the system includes baseband and control system, radio frequency power amplifier, wherein the radio frequency power amplifier includes power amplifier control unit, amplifier module, it is characterized in that, the system also includes: The first interface circuit: located in the baseband and control system, used to send the actual operating frequency point to the RF power amplifier; The second interface circuit: located in the RF power amplifier, used to receive the actual operating frequency point from the baseband and control system; The second interface circuit sends the received actual operating frequency point information from the first interface circuit to the power amplifier control unit; The power amplifier control unit receives the information of the actual operating frequency point from the second interface circuit, processes the actual operating frequency point to expand the frequency range, sets the pilot frequency according to the processed frequency point information, and adjusts the performance parameters of the amplifier module according to the pilot frequency signal. make adjustments; The amplifier module receives the adjusted performance parameter from the power control unit, amplifies the external frequency signal according to the performance parameter, and outputs it. 10. The system according to claim 9, wherein the power amplifier control unit comprises: Central control module: receiving the actual working frequency point from the second interface circuit, processing the actual working frequency point to expand the frequency range, and sending the processed frequency point information to the linearization module; Linearization module: Receive the frequency point information processed by the central control module, set the pilot frequency according to the frequency point information, and then send the set pilot frequency signal to the amplifier module for amplification; The central control module extracts the pilot frequency amplification output parameters through the linearization module and the amplifier module, and sends the pilot frequency amplification output parameters to the gain control circuit; Gain control circuit: receiving the pilot amplification output parameters extracted by the central control module, and controlling the gain and gain flatness of the radio frequency power amplifier according to the pilot amplification output parameters. 11. The system according to claim 10, wherein the power amplifier control unit further comprises: a working frequency band register: receiving the information of the actual working frequency point from the central control module and storing the information of the actual working frequency point locally. 12. A system of radio frequency power amplifier, the system includes baseband and control system, radio frequency power amplifier, wherein the radio frequency power amplifier includes power amplifier control unit, amplifier module, it is characterized in that, the system also includes: The first interface circuit: located in the baseband and control system, used to send the actual operating frequency point to the RF power amplifier; The second interface circuit: located in the RF power amplifier, used to receive the actual operating frequency point from the baseband and control system; The second interface circuit sends the received actual operating frequency point information from the first interface circuit to the power amplifier control unit; The power amplifier control unit receives the actual operating frequency point information from the second interface circuit, and the RF power amplifier selects the RF power amplifier performance parameter corresponding to the small frequency band that matches the stored actual operating frequency point information as the current RF power amplifier performance parameter. The amplifier module receives the adjusted performance parameter from the power control unit, amplifies the external frequency signal according to the performance parameter, and outputs it. 13. The system according to claim 12, wherein the power amplifier control unit comprises: Calibration table register: store parameters for optimizing the radio frequency power amplifier corresponding to each small frequency band divided in the specified frequency of the radio frequency power amplifier; According to the received actual operating frequency point, the central control module selects the RF power amplifier performance parameter corresponding to the small frequency band that matches the stored actual operating frequency point information as the performance parameter of the current RF power amplifier, and sends the parameter through the central control module to the gain control circuit; The gain control circuit receives the performance parameters from the central control module, and controls the gain and gain flatness of the radio frequency power amplifier according to the performance parameters.

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