CN113328708B - Control circuit, control method and device of radio frequency power amplifier circuit and electronic equipment - Google Patents

Abstract

The application discloses a control circuit, a control method and a control device of a radio frequency power amplifier circuit and electronic equipment, and belongs to the technical field of circuits. The control circuit of the radio frequency power amplifier circuit comprises: the output end of the envelope circuit is connected with the power supply end of the radio frequency power amplifier circuit; the input end of the voltage control circuit is connected with the output end of the radio frequency power amplifier circuit, and the output end of the voltage control circuit is connected with the control end of the envelope circuit; the voltage control circuit is used for determining adjacent channel power of the radio frequency power amplification circuit or signal quality value of the radio frequency power amplification circuit according to an output signal of the radio frequency power amplification circuit, and controlling amplification gain of the envelope circuit according to the adjacent channel power or the signal quality value so as to adjust power supply voltage of a power supply end of the radio frequency power amplification circuit.

Description

Control circuit, control method, device and electronic equipment for radio frequency power amplifier circuit

Technical Field

The present application belongs to the field of circuit technology, and specifically relates to a control circuit of a radio frequency power amplifier circuit, a control method of a radio frequency power amplifier circuit, a control device of a radio frequency power amplifier circuit, and an electronic device.

Background Art

The efficiency of the RF power amplifier (PA) is inversely proportional to the supply voltage of the PA. The lower the supply voltage, the higher the efficiency. However, the reduction in supply voltage will lead to a decrease in the maximum output power and linearity of the PA. In order to meet the requirements of efficiency and PA performance at the same time, it is necessary to dynamically control the supply voltage of the PA. In related technologies, the envelope tracking (ET) method is used to control the PA voltage. Specifically, a higher voltage is set at a high power point and a lower voltage is set at a low power point, thereby achieving a good power saving purpose.

However, electronic equipment is calibrated for parameters such as ET voltage during factory calibration to meet the requirements of RF performance indicators. However, the performance of PA will change under high and low temperatures, various standing waves and load phases. Current methods such as digital pre-distortion (DPD) cannot compensate for PA distortion, which will lead to a decline in the performance of electronic equipment.

Summary of the invention

The purpose of the embodiments of the present application is to provide a control circuit of a radio frequency power amplifier circuit, a control method of a radio frequency power amplifier circuit, a control device of a radio frequency power amplifier circuit and an electronic device, which can solve the problem in the related art that the performance of the electronic device is degraded due to linear distortion of the radio frequency power amplifier circuit.

In a first aspect, an embodiment of the present application provides a control circuit of a radio frequency power amplifier circuit, the control circuit comprising:

An envelope circuit, wherein an output end of the envelope circuit is connected to a power supply end of a radio frequency power amplifier circuit;

A voltage control circuit, wherein an input end of the voltage control circuit is connected to an output end of the radio frequency power amplifier circuit, and an output end of the voltage control circuit is connected to a control end of the envelope circuit;

Among them, the voltage control circuit is used to determine the adjacent channel power of the RF power amplifier circuit or the signal quality value of the RF power amplifier circuit according to the output signal of the RF power amplifier circuit, and to control the amplification gain of the envelope circuit according to the adjacent channel power or the signal quality value to adjust the power supply voltage of the power supply end of the RF power amplifier circuit.

In a second aspect, an embodiment of the present application provides an electronic device, which includes a radio frequency power amplifier circuit; such as the control circuit of the radio frequency power amplifier circuit of the first aspect, the control circuit of the radio frequency power amplifier circuit is connected to the radio frequency power amplifier circuit and is used to adjust the power supply voltage of the radio frequency power amplifier circuit.

In a third aspect, an embodiment of the present application provides a control method for a control circuit of a radio frequency power amplifier circuit as in the first aspect, the method comprising:

Obtaining an output signal of a radio frequency power amplifier circuit;

Determine the adjacent channel power of the radio frequency power amplifier circuit or the signal quality value of the radio frequency power amplifier circuit according to the output signal;

The amplification gain of the envelope circuit connected to the radio frequency power amplifier circuit is controlled according to the adjacent channel power or signal quality value to adjust the supply voltage of the radio frequency power amplifier circuit.

In a fourth aspect, an embodiment of the present application provides a control device for a control circuit of a radio frequency power amplifier circuit as in the first aspect, the device comprising:

An acquisition module, used to acquire an output signal of a radio frequency power amplifier circuit;

A determination module, used to determine the adjacent channel power of the radio frequency power amplifier circuit or the signal quality value of the radio frequency power amplifier circuit according to the output signal;

The control module is used to control the amplification gain of the envelope circuit connected to the radio frequency power amplifier circuit according to the adjacent channel power or signal quality value, so as to adjust the supply voltage of the radio frequency power amplifier circuit.

In a fifth aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the control method of the control circuit of the RF power amplifier circuit of the first aspect are implemented.

In a sixth aspect, an embodiment of the present application provides a readable storage medium, which stores a program or instruction. When the program or instruction is executed by a processor, the steps of the control method of the control circuit of the RF power amplifier circuit as in the first aspect are implemented.

In the seventh aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement a control method for a control circuit of a radio frequency power amplifier circuit as in the first aspect.

In the embodiment of the present application, the output signal of the RF power amplifier circuit is detected, and the amplification gain of the envelope circuit is dynamically adjusted according to the adjacent channel power or signal quality value of the output signal, so that the output voltage of the envelope circuit changes, that is, the power supply voltage of the RF power amplifier circuit is adjusted. In the above manner, when nonlinear distortion occurs in the RF power amplifier circuit, the power supply voltage of the RF power amplifier circuit is adjusted, thereby improving the linearity of the RF power amplifier circuit, improving the signal quality, avoiding affecting the uplink throughput, and reducing performance degradation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a control circuit of a radio frequency power amplifier circuit according to an embodiment of the present application;

FIG2 is a second structural schematic diagram of a control circuit of a radio frequency power amplifier circuit according to an embodiment of the present application;

FIG3 is a schematic block diagram of an electronic device according to an embodiment of the present application;

4 is a flow chart of a control method of a control circuit of a radio frequency power amplifier circuit according to an embodiment of the present application;

5 is a schematic block diagram of a control device of a control circuit of a radio frequency power amplifier circuit according to an embodiment of the present application;

FIG6 is a second schematic block diagram of an electronic device according to an embodiment of the present application;

FIG. 7 is a third schematic block diagram of the electronic device according to an embodiment of the present application.

The corresponding relationship between the reference numerals and component names in FIG. 1 and FIG. 2 is as follows:

102 envelope circuit, 1202 linear amplifier, 1204 Buck circuit, 104 voltage control circuit, 1402 gain control circuit, 1404 power detection circuit, 1406 power division circuit, 1408 local oscillator circuit, 1410 mixing circuit, 1412 analog-to-digital conversion circuit, 1414 second digital control circuit, 1416 signal quality detection circuit, 202 voltage providing circuit, 204 radio frequency power amplifier circuit, 206 coupler.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally represents that the objects associated with each other are in an "or" relationship.

In the following, in combination with the accompanying drawings, the control method of the RF power amplifier circuit, the control device of the RF power amplifier circuit, the control circuit of the RF power amplifier circuit, the electronic device and the readable storage medium provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

The embodiment of the present application provides a control circuit of a radio frequency power amplifier circuit, as shown in FIG1 and FIG2 , the control circuit includes:

The envelope circuit 102, the output end of the envelope circuit 102 is connected to the power supply end of the radio frequency power amplifier circuit 204;

A voltage control circuit 104, wherein an input end of the voltage control circuit 104 is connected to an output end of the RF power amplifier circuit 204, and an output end of the voltage control circuit 104 is connected to a control end of the envelope circuit 102;

Among them, the voltage control circuit 104 is used to determine the adjacent channel power of the RF power amplifier circuit or the signal quality value of the RF power amplifier circuit according to the output signal of the RF power amplifier circuit 204, and control the amplification gain of the envelope circuit 102 according to the adjacent channel power or the signal quality value to adjust the power supply voltage of the power supply end of the RF power amplifier circuit 204.

In this embodiment, the output end of the envelope circuit 102 is connected to the voltage providing circuit 202, the voltage providing circuit 202 provides input voltage for the envelope circuit 102, the output end of the envelope circuit 102 is connected to the power supply end of the RF power amplifier circuit 204, the envelope circuit includes a linear amplifier 1202 and a Buck circuit 1204 (i.e., a voltage conversion circuit), the linear amplifier 1202 is used to process the high-frequency part with a small energy ratio, and has the characteristics of high frequency and low efficiency, and the Buck circuit 1204 is used to amplify the signal of the low-frequency part, and has the characteristics of high efficiency. After the two parts of the circuit, the linear amplifier 1202 and the Buck circuit 1204, are connected in parallel, the output voltage containing the envelope signal is provided to the RF power amplifier circuit 204, and the output voltage of the envelope circuit 102 is the power supply voltage of the RF power amplifier circuit 204, that is, the control voltage of the RF power amplifier circuit 204.

The output signal of the RF power amplifier circuit 204 is detected by the voltage control circuit 104, and the amplification gain of the envelope circuit 102 (i.e., the gain of the linear amplifier 1202) is dynamically adjusted according to the adjacent channel power or signal quality value of the output signal, so that the output voltage of the envelope circuit 102 changes, that is, the power supply voltage of the RF power amplifier circuit 204 is adjusted. In the above manner, when nonlinear distortion occurs in the RF power amplifier circuit 204, the power supply voltage of the RF power amplifier circuit 204 is adjusted, thereby improving the linearity of the RF power amplifier circuit 204, improving the signal quality, avoiding affecting the uplink throughput, and reducing the performance degradation.

Further, in one embodiment of the present application, the voltage control circuit includes: a sub-control circuit, the sub-control circuit is connected to the output end of the RF power amplifier circuit 204; a gain control circuit 1402, the gain control circuit 1402 is respectively connected to the sub-control circuit and the control end of the envelope circuit 102; wherein the sub-control circuit determines the adjacent channel power according to the output signal, and the gain control circuit 1402 controls the amplification gain of the envelope circuit 102 to increase when the adjacent channel power increases, so as to increase the supply voltage of the RF power amplifier circuit 204; the gain control circuit 1402 controls the adjacent channel power to decrease when the adjacent channel power decreases. When the signal quality value is smaller than the preset threshold, the gain control circuit 1402 controls the amplification gain of the envelope circuit 102 to decrease so as to reduce the supply voltage of the RF power amplifier circuit 204; or, the sub-control circuit determines the signal quality value according to the output signal and the reference signal, and the gain control circuit 1402 controls the amplification gain of the envelope circuit 102 to increase so as to increase the supply voltage of the RF power amplifier circuit 204 when the signal quality value is smaller than the preset threshold; the gain control circuit 1402 controls the amplification gain of the envelope circuit 102 to decrease so as to reduce the supply voltage of the RF power amplifier circuit 204 when the signal quality value is greater than or equal to the preset threshold.

In this embodiment, a method of adjusting the supply voltage of the RF power amplifier circuit 204 is defined, that is, the sub-control circuit determines the adjacent channel power of the RF power amplifier circuit 204 according to the output signal, and the gain control circuit 1402 controls the amplification gain of the envelope circuit 102 according to the adjacent channel power to adjust the supply voltage of the RF power amplifier circuit 204. Specifically, when the nonlinear distortion occurs when adjusting the RF power amplifier circuit 204, the leakage power of its adjacent channel will be significantly increased. Therefore, when the leakage power of the adjacent channel increases, the amplification gain of the envelope circuit 102 is controlled to increase the supply voltage of the RF power amplifier circuit 204. When the adjacent channel power decreases, it indicates that the signal quality of the RF power amplifier circuit 204 is good, so the amplification gain of the envelope circuit 102 is controlled to reduce the supply voltage of the RF power amplifier circuit 204.

Through the above method, when the linearity of the RF power amplifier circuit 204 is relatively high and the leakage power of the adjacent channel is relatively good, the power supply voltage of the RF power amplifier circuit 204 can be reduced, thereby achieving the purpose of saving power; when the linearity of the RF power amplifier circuit 204 is relatively poor and the leakage power of the adjacent channel is relatively poor, the power supply voltage of the RF power amplifier circuit 204 can be increased, thereby improving the linearity of the electronic device.

In this embodiment, another way of adjusting the power supply voltage of the RF power amplifier circuit 204 is also defined, that is, the sub-control circuit determines the signal quality value of the output signal according to the output signal and the reference signal, and controls the amplification gain of the envelope circuit 102 according to the signal quality value to adjust the power supply voltage of the RF power amplifier circuit 204. Specifically, when the signal quality value is less than a preset threshold value, it indicates that the signal quality of the RF power amplifier circuit 204 is not good, and the amplification gain of the envelope circuit 102 is controlled to increase the power supply voltage of the RF power amplifier circuit 204. When the signal quality value is greater than or equal to the preset threshold value, it indicates that the signal quality of the RF power amplifier circuit 204 is good, and the amplification gain of the envelope circuit 102 is controlled to reduce the power supply voltage of the RF power amplifier circuit 204.

Through the above method, when the linearity of the RF power amplifier circuit 204 is relatively high, that is, the signal quality is good, the power supply voltage of the RF power amplifier circuit 204 can be reduced, thereby achieving the purpose of saving power; when the linearity of the RF power amplifier circuit 204 is relatively poor, that is, the signal quality is not good, the power supply voltage of the RF power amplifier circuit 204 can be increased, thereby improving the linearity of the electronic device.

Furthermore, in one embodiment of the present application, the sub-control circuit includes: a power detection circuit 1404, connected to the output end of the RF power amplifier circuit 204; a power division circuit 1406, connected to the power detection circuit 1404, the power division circuit 1406 is used to transmit the output signal detected by the power detection circuit 1404 to the mixing circuit 1410; a local oscillator circuit 1408, the local oscillator circuit 1408 is used to generate a carrier signal, the frequency of the carrier signal is the same as the frequency of the adjacent channel power; a mixing circuit 1410, respectively connected to the power division circuit 1406 and the local oscillator circuit 1408, the mixing circuit 1410 is used to demodulate the output signal into an analog signal of the adjacent channel power according to the carrier signal; a first digital control circuit, respectively connected to the mixing circuit 1410 and the gain control circuit 1402, the first digital control circuit is used to convert the analog signal into a digital signal, and output a control signal to the gain control circuit 1402 according to the digital signal.

In this embodiment, the function of the power division circuit 1406 is to divide the output signal of the RF power amplifier circuit 204 detected by the power detection circuit 1404 into two paths, the first path continues to be used as a conventional power detection, and the second path is used to assist the envelope circuit 102 and is used by the subsequent local oscillator circuit 1408, the mixer circuit 1410 and the first digital control circuit. The frequency generated by the local oscillator circuit 1408 is the same as the adjacent channel of the RF transmission channel of the RF power amplifier circuit 204. The local oscillator circuit 1408 has a similar function to the local oscillator of the RF transceiver, which is to provide a carrier frequency signal to the subsequent frequency conversion circuit. The mixer circuit 1410, the power division circuit 1406 and the local oscillator circuit 1408 constitute a demodulation circuit, which demodulates the output signal detected by the power detection circuit 1404 into a processable analog signal and provides it to the subsequent circuit for use. The first digital control circuit includes an analog-to-digital conversion circuit 1412 and a second digital control circuit 1414. The analog-to-digital conversion circuit 1412 converts the previous analog signal into a digital signal. The second digital control circuit 1414 outputs a control signal to the gain control circuit 1402 according to the magnitude of the digital signal. The gain control circuit 1402 controls the gain of the linear amplifier 1202 of the envelope circuit 102 according to the control signal output by the second digital control circuit 1414.

The specific working process is as follows:

In step 1, the Buck circuit 1204 of the envelope circuit 102 provides a voltage signal of the low frequency part, and the linear amplifier 1202 provides a voltage signal of the high frequency part. The circuit composed of the two in parallel provides an output voltage with complete envelope information. This initial output voltage can ensure the stable operation of the RF power amplifier circuit 204 under normal conditions.

In step 2, the coupler 206 detects the output signal of the RF power amplifier circuit 204 in real time and feeds it back to the sub-control circuit consisting of the power detection circuit 1404, the power division circuit 1406, the local oscillator circuit 1408, the mixing circuit 1410, the analog-to-digital conversion circuit 1412 and the second digital control circuit 1414.

Step three, the sub-control circuit determines the adjacent channel leakage power of the output signal of the RF power amplifier circuit 204 through demodulation, and outputs a control signal to the gain control circuit 1402 according to the power.

Step 4, the gain control circuit 1402 controls the gain and thus controls the output voltage of the envelope circuit 102. Specifically, the output of the RF power amplifier circuit 204 increases, and the control drive circuit of the Buck circuit 1204 synchronously controls the voltage amplitude of the low-frequency part, thereby achieving the purpose of adjusting the power supply voltage of the RF power amplifier circuit 204. The gain control circuit 1402 changes according to the output signal quality of the RF power amplifier circuit 204. When the output signal quality deteriorates and the adjacent channel leakage power increases, the power supply voltage of the RF power amplifier circuit 204 also increases accordingly, thereby improving the linearity of the RF power amplifier circuit 204; when the output signal quality becomes very good and the adjacent channel leakage power becomes small, the power supply voltage of the RF power amplifier circuit 204 can be reduced, thereby achieving the purpose of saving power.

Furthermore, in one embodiment of the present application, the sub-control circuit includes: a power detection circuit 1404, connected to the output end of the RF power amplifier circuit 204; a signal quality detection circuit 1416, connected to the power detection circuit 1404, the signal quality detection circuit 1416 is used to determine the signal quality value of the output signal based on the reference signal and the output signal detected by the power detection circuit 1404; a second digital control circuit 1414, respectively connected to the signal quality detection circuit 1416 and the gain control circuit 1402, the second digital control circuit 1414 is used to output a control signal to the gain control circuit 1402 according to the signal quality value.

In this embodiment, the signal quality detection circuit 1416 is used to directly detect the quality of the output signal of the RF power amplifier circuit 204, and according to the signal quality, the amplification gain of the envelope circuit 102 is controlled through the second digital control circuit 1414, thereby achieving the purpose of controlling the power supply voltage of the RF power amplifier circuit 204.

Specifically, the signal quality detection circuit 1416 is used to compare the output signal of the RF power amplifier circuit 204 fed back by the coupler 206 with the reference signal, and calculate the signal quality of the output signal. The second digital control circuit 1414 outputs a control signal to the gain control circuit 1402 according to the signal quality detected by the signal quality detection circuit 1416. The gain control circuit 1402 controls the gain of the linear amplifier 1202 of the envelope circuit 102 according to the control signal output by the second digital control circuit 1414.

It should be noted that the reference signal may be an input signal of the RF power amplifier circuit 204 .

By means of the above method, when the linearity of the RF power amplifier circuit 204 is relatively poor, that is, when the signal quality is poor, the supply voltage of the RF power amplifier circuit 204 can be increased, thereby improving the linearity of the electronic device.

The embodiment of the present application further provides an electronic device, as shown in FIG3 , the electronic device 300 includes:

Radio frequency power amplifier circuit 302;

The control circuit 304 of the RF power amplifier circuit in the above embodiment is connected to the RF power amplifier circuit 302 and is used to adjust the supply voltage of the RF power amplifier circuit 302 .

In this embodiment, the electronic device 300 includes a control circuit 304 of a radio frequency power amplifier circuit. The electronic device 300 implements the various functions of the above-mentioned control circuit 304 embodiment of the radio frequency power amplifier circuit and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a control method of a control circuit of a radio frequency power amplifier circuit, as shown in FIG4 , the control method includes:

Step 402, obtaining an output signal of a radio frequency power amplifier circuit;

Step 404, determining the adjacent channel power of the radio frequency power amplifier circuit or the signal quality value of the radio frequency power amplifier circuit according to the output signal;

Step 406: Control the amplification gain of the envelope circuit connected to the radio frequency power amplifier circuit according to the adjacent channel power or signal quality value to adjust the supply voltage of the radio frequency power amplifier circuit.

In this embodiment, the output end of the envelope circuit is connected to the voltage providing circuit, the voltage providing circuit provides input voltage for the envelope circuit, the output end of the envelope circuit is connected to the power supply end of the RF power amplifier circuit, the envelope circuit includes a linear amplifier and a voltage conversion circuit (i.e., Buck circuit), the linear amplifier is used to process the high-frequency part with a smaller energy ratio, and has the characteristics of high frequency and low efficiency, and the Buck circuit is used to amplify the signal of the low-frequency part, and has the characteristics of high efficiency. After the two parts of the circuit, the linear amplifier and the BUCK circuit, are connected in parallel, the output voltage containing the envelope signal is provided to the RF power amplifier circuit, and the output voltage of the envelope circuit is the power supply voltage of the RF power amplifier circuit, that is, the control voltage of the RF power amplifier circuit.

By detecting the output signal of the RF power amplifier circuit, the amplification gain of the envelope circuit (i.e., the gain of the linear amplifier) is dynamically adjusted according to the adjacent channel power or signal quality value of the output signal, so that the output voltage of the envelope circuit changes, that is, the power supply voltage of the RF power amplifier circuit is adjusted. In the above manner, when nonlinear distortion occurs in the RF power amplifier circuit, the power supply voltage of the RF power amplifier circuit is adjusted, thereby improving the linearity of the RF power amplifier circuit, improving the signal quality, avoiding affecting the uplink throughput, and reducing performance degradation.

Furthermore, in one embodiment of the present application, the amplification gain of an envelope circuit connected to the RF power amplifier circuit is controlled according to the adjacent channel power to adjust the supply voltage of the RF power amplifier circuit, including: when the adjacent channel power increases, the amplification gain of the envelope circuit is controlled to increase to increase the supply voltage of the RF power amplifier circuit; when the adjacent channel power decreases, the amplification gain of the envelope circuit is controlled to decrease to reduce the supply voltage of the RF power amplifier circuit.

In this embodiment, a method for adjusting the power supply voltage of the radio frequency power amplifier circuit is defined, that is, the adjacent channel power of the radio frequency power amplifier circuit is determined according to the output signal, and the amplification gain of the envelope circuit is controlled according to the adjacent channel power of the radio frequency power amplifier circuit to adjust the power supply voltage of the radio frequency power amplifier circuit. Specifically, when the radio frequency power amplifier circuit is adjusted to cause nonlinear distortion, the leakage power of the adjacent channel (Adjacent channel leakage ratio, ACLR) will be significantly increased, so when the leakage power of the adjacent channel increases, the amplification gain of the envelope circuit is controlled to increase the power supply voltage of the radio frequency power amplifier circuit. When the adjacent channel power decreases, it indicates that the signal quality of the radio frequency power amplifier circuit is good, so the amplification gain of the envelope circuit is controlled to reduce the power supply voltage of the radio frequency power amplifier circuit.

Through the above method, when the linearity of the RF power amplifier circuit is relatively high and the leakage power of the adjacent channel is relatively good, the power supply voltage of the RF power amplifier circuit can be reduced, thereby achieving the purpose of saving power; when the linearity of the RF power amplifier circuit is relatively poor and the leakage power of the adjacent channel is relatively poor, the power supply voltage of the RF power amplifier circuit can be increased, thereby improving the linearity of the electronic equipment.

Furthermore, in one embodiment of the present application, the amplification gain of the envelope circuit connected to the RF power amplifier circuit is controlled according to the signal quality value to adjust the supply voltage of the RF power amplifier circuit, including: when the signal quality value is less than a preset threshold, controlling the amplification gain of the envelope circuit to increase to increase the supply voltage of the RF power amplifier circuit; when the signal quality value is greater than or equal to the preset threshold, controlling the amplification gain of the envelope circuit to decrease to reduce the supply voltage of the RF power amplifier circuit.

In this embodiment, a method for adjusting the power supply voltage of the RF power amplifier circuit is defined, that is, according to the output signal and the reference signal, the signal quality value of the output signal is determined, and the amplification gain of the envelope circuit is controlled according to the signal quality value of the output signal to adjust the power supply voltage of the RF power amplifier circuit. Specifically, when the signal quality value is less than a preset threshold value, indicating that the signal quality of the RF power amplifier circuit is not good, the amplification gain of the envelope circuit is controlled to increase the power supply voltage of the RF power amplifier circuit. When the signal quality value is greater than or equal to the preset threshold value, indicating that the signal quality of the RF power amplifier circuit is good, the amplification gain of the envelope circuit is controlled to reduce the power supply voltage of the RF power amplifier circuit.

Through the above method, when the linearity of the RF power amplifier circuit is relatively high, that is, the signal quality is good, the power supply voltage of the RF power amplifier circuit can be reduced, thereby achieving the purpose of saving power; when the linearity of the RF power amplifier circuit is relatively poor, that is, the signal quality is not good, the power supply voltage of the RF power amplifier circuit can be increased, thereby improving the linearity of the electronic equipment.

It should be noted that the control method of the control circuit of the RF power amplifier circuit provided in the embodiment of the present application can be executed by a control device of the control circuit of the RF power amplifier circuit, or a control module in the control device for executing the control method of the control circuit. In the embodiment of the present application, the control device executing the control method of the control circuit of the RF power amplifier circuit is taken as an example to illustrate the control device of the control circuit of the RF power amplifier circuit provided in the embodiment of the present application.

The present application embodiment provides a control device for a control circuit of a radio frequency power amplifier circuit. As shown in FIG5 , the control device 500 for the control circuit of the radio frequency power amplifier circuit includes:

An acquisition module 502 is used to acquire an output signal of a radio frequency power amplifier circuit;

A determination module 504, configured to determine an adjacent channel power of the radio frequency power amplifier circuit or a signal quality value of the radio frequency power amplifier circuit according to the output signal;

The control module 506 is used to control the amplification gain of the envelope circuit connected to the radio frequency power amplifier circuit according to the adjacent channel power or signal quality value, so as to adjust the supply voltage of the radio frequency power amplifier circuit.

In this embodiment, the output signal of the RF power amplifier circuit is detected, and the amplification gain of the envelope circuit (i.e., the gain of the linear amplifier) is dynamically adjusted according to the adjacent channel power or signal quality value of the output signal, so that the output voltage of the envelope circuit changes, that is, the power supply voltage of the RF power amplifier circuit is adjusted. In the above manner, when nonlinear distortion occurs in the RF power amplifier circuit, the power supply voltage of the RF power amplifier circuit is adjusted, thereby improving the linearity of the RF power amplifier circuit, improving the signal quality, avoiding affecting the uplink throughput, and reducing performance degradation.

Furthermore, in one embodiment of the present application, the control module 506 is specifically used to: when the adjacent channel power increases, control the amplification gain of the envelope circuit to increase so as to increase the power supply voltage of the RF power amplifier circuit; when the adjacent channel power decreases, control the amplification gain of the envelope circuit to decrease so as to reduce the power supply voltage of the RF power amplifier circuit.

Further, in one embodiment of the present application, the control module 506 is specifically used to: when the signal quality value is less than a preset threshold, control the amplification gain of the envelope circuit to increase so as to increase the power supply voltage of the RF power amplifier circuit; when the signal quality value is greater than or equal to the preset threshold, control the amplification gain of the envelope circuit to decrease so as to reduce the power supply voltage of the RF power amplifier circuit.

The control device 500 of the control circuit of the radio frequency power amplifier circuit in the embodiment of the present application can be a device, or a component, integrated circuit or chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (Ultra-Mobile Personal Computer, UMPC), a netbook or a personal digital assistant (Personal Digital Assistant, PDA), etc., and the non-mobile electronic device can be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (Personal Computer, PC), a television (Television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

The control device 500 of the control circuit of the radio frequency power amplifier circuit in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

The control device 500 of the control circuit of the radio frequency power amplifier circuit provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 4, and will not be described again here to avoid repetition.

Optionally, as shown in Figure 6, an embodiment of the present application also provides an electronic device 600, including a processor 602, a memory 604, and a program or instruction stored in the memory 604 and executable on the processor 602. When the program or instruction is executed by the processor 602, each process of the control method embodiment of the control circuit of the above-mentioned radio frequency power amplifier circuit is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

FIG. 7 is a schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 700 includes but is not limited to components such as a radio frequency unit 702 , a network module 704 , an audio output unit 706 , an input unit 708 , a sensor 710 , a display unit 712 , a user input unit 714 , an interface unit 716 , a memory 718 , and a processor 720 .

Those skilled in the art will appreciate that the electronic device 700 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 720 through a power management system, so that the power management system can manage charging, discharging, and power consumption. The electronic device structure shown in FIG7 does not constitute a limitation on the electronic device, and the electronic device may include more or fewer components than shown, or combine certain components, or arrange components differently, which will not be described in detail here.

Among them, the processor 720 is used to obtain the output signal of the RF power amplifier circuit, determine the adjacent channel power of the RF power amplifier circuit or the signal quality value of the RF power amplifier circuit according to the output signal, and control the amplification gain of the envelope circuit connected to the RF power amplifier circuit according to the adjacent channel power or the signal quality value to adjust the power supply voltage of the RF power amplifier circuit.

In this embodiment, the output signal of the RF power amplifier circuit is detected, and the amplification gain of the envelope circuit (i.e., the gain of the linear amplifier) is dynamically adjusted according to the adjacent channel power or signal quality value of the output signal, so that the output voltage of the envelope circuit changes, that is, the power supply voltage of the RF power amplifier circuit is adjusted. In the above manner, when nonlinear distortion occurs in the RF power amplifier circuit, the power supply voltage of the RF power amplifier circuit is adjusted, thereby improving the linearity of the RF power amplifier circuit, improving the signal quality, avoiding affecting the uplink throughput, and reducing performance degradation.

Furthermore, in one embodiment of the present application, the processor 720 is specifically used to: when the adjacent channel power increases, control the amplification gain of the envelope circuit to increase so as to increase the power supply voltage of the RF power amplifier circuit; when the adjacent channel power decreases, control the amplification gain of the envelope circuit to decrease so as to reduce the power supply voltage of the RF power amplifier circuit.

Further, in one embodiment of the present application, the processor 720 is specifically used to: when the signal quality value is less than a preset threshold, control the amplification gain of the envelope circuit to increase so as to increase the power supply voltage of the RF power amplifier circuit; when the signal quality value is greater than or equal to the preset threshold, control the amplification gain of the envelope circuit to decrease so as to reduce the power supply voltage of the RF power amplifier circuit.

It should be understood that in the embodiment of the present application, the radio frequency unit 702 can be used to send and receive information or send and receive signals during a call, specifically, receive downlink data from a base station or send uplink data to a base station. The radio frequency unit 702 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The network module 704 provides users with wireless broadband Internet access, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 706 can convert the audio data received by the RF unit 702 or the network module 704 or stored in the memory 718 into an audio signal and output it as sound. In addition, the audio output unit 706 can also provide audio output related to a specific function performed by the electronic device 700 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 706 includes a speaker, a buzzer, a receiver, etc.

The input unit 708 is used to receive audio or video signals. The input unit 708 may include a graphics processing unit (GPU) 7082 and a microphone 7084. The graphics processor 7082 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 712, or stored in the memory 718 (or other storage medium), or sent via the radio frequency unit 702 or the network module 704. The microphone 7084 can receive sound and can process the sound into audio data. The processed audio data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 702 in the case of a telephone call mode.

The electronic device 700 also includes at least one sensor 710, such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, a light sensor, a motion sensor, and other sensors.

The display unit 712 is used to display information input by the user or information provided to the user. The display unit 712 may include a display panel 7122, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.

The user input unit 714 can be used to receive input digital or character information, and to generate key signal input related to user settings and function control of the electronic device. Specifically, the user input unit 714 includes a touch panel 7142 and other input devices 7144. The touch panel 7142 is also called a touch screen, which can collect the user's touch operations on or near it. The touch panel 7142 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, and converts it into contact coordinates, and then sends it to the processor 720, receives the command sent by the processor 720 and executes it. Other input devices 7144 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

Furthermore, the touch panel 7142 may be covered on the display panel 7122. When the touch panel 7142 detects a touch operation on or near it, it is transmitted to the processor 720 to determine the type of the touch event, and then the processor 720 provides a corresponding visual output on the display panel 7122 according to the type of the touch event. The touch panel 7142 and the display panel 7122 may be two independent components or integrated into one component.

The interface unit 716 is an interface for connecting an external device to the electronic device 700. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input/output (I/O) port, a video I/O port, a headphone port, etc. The interface unit 716 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the electronic device 700 or may be used to transmit data between the electronic device 700 and an external device.

The memory 718 can be used to store software programs and various data. The memory 718 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile terminal (such as audio data, a phone book, etc.), etc. In addition, the memory 718 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 720 performs various functions of the electronic device 700 and processes data by running or executing software programs and/or modules stored in the memory 718 and calling data stored in the memory 718, thereby monitoring the electronic device 700 as a whole. The processor 720 may include one or more processing units; preferably, the processor 720 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communications.

An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the control method embodiment of the control circuit of the above-mentioned RF power amplifier circuit is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the control method embodiment of the control circuit of the above-mentioned radio frequency power amplifier circuit, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims (8)

1. A control circuit for a radio frequency power amplifier circuit, comprising:

The output end of the envelope circuit is connected with the power supply end of the radio frequency power amplifier circuit;

The input end of the voltage control circuit is connected with the output end of the radio frequency power amplifier circuit, and the output end of the voltage control circuit is connected with the control end of the envelope circuit;

The voltage control circuit is used for determining adjacent channel power of the radio frequency power amplifier circuit or signal quality value of the radio frequency power amplifier circuit according to an output signal of the radio frequency power amplifier circuit, and controlling amplification gain of the envelope circuit according to the adjacent channel power or the signal quality value so as to adjust power supply voltage of a power supply end of the radio frequency power amplifier circuit;

The voltage control circuit includes:

The sub-control circuit is connected with the output end of the radio frequency power amplifier circuit;

The gain control circuit is respectively connected with the control ends of the sub-control circuit and the envelope circuit;

The sub-control circuit determines the adjacent channel power according to the output signal, and the gain control circuit controls the amplification gain of the envelope circuit to be increased under the condition that the adjacent channel power is increased so as to increase the power supply voltage of the radio frequency power amplifier circuit; the gain control circuit controls the amplification gain of the envelope circuit to be reduced under the condition that the adjacent channel power is reduced so as to reduce the power supply voltage of the radio frequency power amplifier circuit;

The sub-control circuit includes:

The power detection circuit is connected with the output end of the radio frequency power amplifier circuit;

the power dividing circuit is connected with the power detecting circuit and is used for transmitting the output signal detected by the power detecting circuit to the mixing circuit;

The local oscillation circuit is used for generating carrier frequency signals, and the frequency of the carrier frequency signals is the same as the frequency of the adjacent channel power;

The frequency mixing circuit is respectively connected with the power dividing circuit and the local oscillation circuit and is used for demodulating the output signal into an analog signal of the adjacent channel power according to the carrier frequency signal;

The first digital control circuit is respectively connected with the frequency mixing circuit and the gain control circuit, and is used for converting the analog signal into a digital signal and outputting a control signal to the gain control circuit according to the digital signal.

2. A control circuit for a radio frequency power amplifier circuit, comprising:

The output end of the envelope circuit is connected with the power supply end of the radio frequency power amplifier circuit;

The input end of the voltage control circuit is connected with the output end of the radio frequency power amplifier circuit, and the output end of the voltage control circuit is connected with the control end of the envelope circuit;

The voltage control circuit is used for determining adjacent channel power of the radio frequency power amplifier circuit or signal quality value of the radio frequency power amplifier circuit according to an output signal of the radio frequency power amplifier circuit, and controlling amplification gain of the envelope circuit according to the adjacent channel power or the signal quality value so as to adjust power supply voltage of a power supply end of the radio frequency power amplifier circuit;

The voltage control circuit includes:

The sub-control circuit is connected with the output end of the radio frequency power amplifier circuit;

The gain control circuit is respectively connected with the control ends of the sub-control circuit and the envelope circuit;

The sub-control circuit determines the signal quality value according to the output signal and the reference signal, and the gain control circuit controls the amplification gain of the envelope circuit to be increased under the condition that the signal quality value is smaller than a preset threshold value so as to increase the supply voltage of the radio frequency power amplifier circuit; the gain control circuit controls the amplification gain of the envelope circuit to be reduced under the condition that the signal quality value is larger than or equal to a preset threshold value so as to reduce the power supply voltage of the radio frequency power amplifier circuit;

The sub-control circuit includes:

The power detection circuit is connected with the output end of the radio frequency power amplifier circuit;

the signal quality detection circuit is connected with the power detection circuit and is used for determining a signal quality value of the output signal according to the reference signal and the output signal detected by the power detection circuit;

And the second digital control circuit is respectively connected with the signal quality detection circuit and the gain control circuit and is used for outputting a control signal to the gain control circuit according to the signal quality value.

3. An electronic device, comprising:

A radio frequency power amplifier circuit;

The control circuit of a radio frequency power amplifier circuit according to claim 1 or 2, wherein the control circuit of the radio frequency power amplifier circuit is connected with the radio frequency power amplifier circuit and is used for adjusting the power supply voltage of the radio frequency power amplifier circuit.

4. A control method for a control circuit of a radio frequency power amplifier circuit according to claim 1 or 2, comprising:

Obtaining an output signal of the radio frequency power amplifier circuit;

determining adjacent channel power of the radio frequency power amplifier circuit or signal quality value of the radio frequency power amplifier circuit according to the output signal;

And controlling the amplification gain of an envelope circuit connected with the radio frequency power amplifier circuit according to the adjacent channel power or the signal quality value so as to adjust the power supply voltage of the radio frequency power amplifier circuit.

5. The control method according to claim 4, wherein the controlling the amplification gain of the envelope circuit connected to the radio frequency power amplifier circuit according to the adjacent channel power to adjust the supply voltage of the radio frequency power amplifier circuit includes:

Under the condition that the adjacent channel power is increased, the amplification gain of the envelope circuit is controlled to be increased so as to increase the power supply voltage of the radio frequency power amplifier circuit;

And under the condition that the adjacent channel power is reduced, controlling the amplification gain of the envelope circuit to be reduced so as to reduce the supply voltage of the radio frequency power amplifier circuit.

6. The control method according to claim 4, wherein the controlling the amplification gain of an envelope circuit connected to the radio frequency power amplifier circuit according to the signal quality value to adjust the supply voltage of the radio frequency power amplifier circuit comprises:

under the condition that the signal quality value is smaller than a preset threshold value, controlling the amplification gain of the envelope circuit to be increased so as to increase the power supply voltage of the radio frequency power amplifier circuit;

And under the condition that the signal quality value is greater than or equal to a preset threshold value, controlling the amplification gain of the envelope circuit to be reduced so as to reduce the supply voltage of the radio frequency power amplifier circuit.

7. A control device for a control circuit of a radio frequency power amplifier circuit as claimed in claim 1 or 2, comprising:

The acquisition module is used for acquiring an output signal of the radio frequency power amplifier circuit;

the determining module is used for determining adjacent channel power of the radio frequency power amplifier circuit or signal quality value of the radio frequency power amplifier circuit according to the output signal;

and the control module is used for controlling the amplification gain of an envelope circuit connected with the radio frequency power amplifier circuit according to the adjacent channel power or the signal quality value so as to adjust the power supply voltage of the radio frequency power amplifier circuit.

8. An electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the control method of the control circuit of the radio frequency power amplifier circuit according to any one of claims 4 to 6.