CN113612495A - Power supply method, device, medium and communication system of power amplifier - Google Patents

Power supply method, device, medium and communication system of power amplifier Download PDF

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Publication number
CN113612495A
CN113612495A CN202110838274.8A CN202110838274A CN113612495A CN 113612495 A CN113612495 A CN 113612495A CN 202110838274 A CN202110838274 A CN 202110838274A CN 113612495 A CN113612495 A CN 113612495A
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power
power amplifier
tracking mode
envelope tracking
environment
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CN202110838274.8A
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CN113612495B (en
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何文卿
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Shanghai Wingtech Electronic Technology Co Ltd
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Shanghai Wingtech Electronic Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/03—Power distribution arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
    • H04Q2209/88—Providing power supply at the sub-station
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

The application relates to the technical field of communication, and provides a power supply method, a power supply device, a power supply medium and a communication system of a power amplifier. The communication system includes: the system comprises a baseband processing unit, a modulation and demodulation unit, a radio frequency transceiving unit, a coupler, a power amplifier, a radio frequency front end component, an antenna, an environmental parameter detection unit and a power supply unit; the base band processing unit, the modulation and demodulation unit, the radio frequency transceiving unit, the coupler, the power amplifier, the radio frequency front end component and the antenna are sequentially connected, the power supply unit is connected between the modulation and demodulation unit and the power amplifier, and the coupler is also connected with the modulation and demodulation unit; the coupler and the environment parameter detection unit respectively detect the power of the power amplifier and the environment parameters of the environment and send the power and the environment parameters to the modulation and demodulation unit; the modulation and demodulation unit determines the power supply mode of the power amplifier to be an average power tracking mode or an envelope tracking mode based on the environmental parameters and the power. Thus, the power supply mode can be determined in combination with the environmental parameters, improving performance degradation.

Description

Power supply method, device, medium and communication system of power amplifier
Technical Field
The present application relates to the field of communications technologies, and in particular, to a power supply method, apparatus, medium, and storage medium for a power amplifier.
Background
With the development of communication technology, especially the development of terminal communication devices such as 3G, 4G, 5G and the like widely used in the global scope and using battery power, there is a need for saving power by a radio frequency power amplifier, so as to ensure that the terminal communication devices have good cruising ability. Therefore, as communication systems continue to evolve, Power Amplifiers (PAs), such as rf Power amplifiers (rpas), are also evolving.
At present, the technology of Power amplifier Power supply mainly includes supplying Power in an Average Power Tracking (APT) mode or supplying Power in an Envelope Tracking (ET) mode. The APT mode is mainly used for solving the problem of unstable work of the power amplifier caused by the voltage variation of the battery, achieving the effect of saving power supply of the power amplifier under a small signal and improving the power consumption of the power amplifier under the small signal. The ET mode tracks the power envelope of the power amplifier by using the power envelope, utilizes the predistortion technology to enable the power amplifier to work in a saturation region, and enables the efficiency of the power amplifier to be always kept at a higher level through the way, thereby achieving the effect of saving the power supply.
Based on this, since the power saving effect of the ET mode is better than that of the APT mode at high power, the ET mode is generally used for supplying power at high power (for example, more than 18 dBm) to achieve the effect of saving power, and the APT mode is generally used for supplying power at medium power and low power (for example, less than 18 dBm). However, when the ET mode power is supplied, the nonlinear effect of the power amplifier is obvious when the environment changes, and in order to adapt to various environmental changes, the ET mode power is improved, which causes a large amount of input of manpower and material resources, and consumes various manpower and material resources. For example, a large change in temperature may have a significant effect on parameters of the power amplifier powered in the ET mode, so that after the power amplifier is debugged at room temperature, when the power amplifier is applied to an environment with a higher temperature or a lower temperature, the parameters of the debugged power amplifier powered in the ET mode are no longer applicable, and the performance of the power amplifier is significantly deteriorated.
Disclosure of Invention
In view of the above, it is necessary to provide a power amplifier power supply method, device, medium, and communication system capable of improving the influence of the environment on the power supply of the power amplifier and ensuring the power amplifier to have better performance.
The embodiment of the application provides a communication system, which comprises a baseband processing unit, a modulation and demodulation unit, a radio frequency transceiving unit, a coupler, a power amplifier, a radio frequency front end component, an antenna, an environmental parameter detection unit and a power supply unit;
the baseband processing unit is connected with the modem unit, the modem unit is connected with the rf transceiver unit, the rf transceiver unit is connected with the coupler, the coupler is connected with the power amplifier, the power amplifier is connected with the rf front-end component, the rf front-end component is connected with the antenna, and the coupler is also connected with the modem unit;
the environment parameter detection unit detects environment parameters of the environment where the power amplifier is located and sends the environment parameters to the modulation and demodulation unit;
the coupler detects the power of the power amplifier and sends the power to the modulation and demodulation unit;
the power supply unit is connected between the modulation and demodulation unit and the power amplifier, the modulation and demodulation unit receives the environment parameter and the power, and determines that the power supply mode of the power amplifier is an average power tracking mode or an envelope tracking mode based on the environment parameter and the power.
In one embodiment, the environmental parameter detection unit includes at least one of a temperature detection sensor, a humidity detection sensor, and a salt spray corrosion detection sensor;
the temperature detection sensor detects the real-time temperature of the environment where the power amplifier is located;
the humidity detection sensor detects the real-time humidity of the environment where the power amplifier is located;
and the salt spray corrosion detection sensor detects the real-time salt spray corrosion of the environment where the power amplifier is located.
In one embodiment, the modem unit is configured to determine, based on the power and the environmental parameter, whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode, and specifically may include: comparing the power with a power range of the envelope tracking mode, and comparing the environmental parameter with an applicable environmental parameter range of the envelope tracking mode; when the power exceeding the power range of the envelope tracking mode and/or the environmental parameter exceeding the applicable environmental parameter range of the envelope tracking mode are met, determining that the power amplifier adopts an average power tracking mode for power supply; and when the power is in the power range of the envelope tracking mode and the environment parameter is in the applicable environment parameter range of the envelope tracking mode, determining that the power amplifier supplies power by adopting the envelope tracking mode.
In one embodiment, the modem unit is configured to determine, based on the power and the environmental parameter, whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode, and specifically may include: judging whether the power is in the power range of the envelope tracking mode; when the power is in the power range of the envelope tracking mode, judging whether the environmental parameters are in the applicable environmental parameter range of the envelope tracking mode; when the environment parameter exceeds the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the average power tracking mode to supply power.
In one embodiment, after determining whether the power is within the power range of the envelope tracking mode, the modem unit is further specifically configured to: when the power is beyond the power range of the envelope tracking mode, the power amplifier is powered by adopting an average power tracking mode.
In one embodiment, after determining whether the environment parameter is within the applicable environment parameter range of the envelope tracking mode, the modem unit is further specifically configured to: and when the environment parameter is in the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the envelope tracking mode to supply power.
The embodiment of the present application further provides a power supply method for a power amplifier, where the method is performed by a modem unit in a communication system provided in any embodiment of the present application, and the method includes:
acquiring the power of a power amplifier transmitted by a coupler;
acquiring the environmental parameters of the environment where the power amplifier is located, which are sent by an environmental parameter detection unit;
determining whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameter.
In one embodiment, the determining that the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameter comprises:
comparing the power to a power range of the envelope tracking mode and comparing the environmental parameter to a range of applicable environmental parameters of the envelope tracking mode;
when the power exceeding the power range of the envelope tracking mode and/or the environmental parameter exceeding the applicable environmental parameter range of the envelope tracking mode are met, determining that the power amplifier supplies power in an average power tracking mode;
and when the power is in the power range of the envelope tracking mode and the environment parameter is in the applicable environment parameter range of the envelope tracking mode, determining that the power amplifier supplies power in the envelope tracking mode.
In one embodiment, determining that the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameter comprises:
determining whether the power is within a power range of the envelope tracking mode;
when the power is in the power range of the envelope tracking mode, judging whether the environment parameter is in the applicable environment parameter range of the envelope tracking mode;
and when the environment parameter exceeds the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts an average power tracking mode to supply power.
In one embodiment, after the determining whether the power is within a power range of the envelope tracking mode, the method further comprises:
when the power exceeds the power range of the envelope tracking mode, the power amplifier is powered by adopting an average power tracking mode.
In one embodiment, after the determining whether the environment parameter is within the applicable environment parameter range of the envelope tracking mode, the method further comprises:
and when the environment parameter is in the range of the applicable environment parameter of the envelope tracking mode, the power amplifier supplies power by adopting the envelope tracking mode.
In one embodiment, the environmental parameter includes at least one of temperature, humidity, and salt spray corrosion.
An embodiment of the present application provides a power supply apparatus for a power amplifier, where the apparatus is disposed in the modem unit in a communication system provided in any embodiment of the present application, and the apparatus includes:
the first parameter acquisition module is used for acquiring the power of the power amplifier transmitted by the coupler;
the second parameter acquisition module is used for acquiring the environmental parameters of the environment where the power amplifier is located, which are sent by the environmental parameter detection unit;
and the power supply mode determining module is used for determining that the power amplifier adopts an average power tracking mode to supply power or adopts an envelope tracking mode to supply power based on the power and the environmental parameters.
The embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the method provided in any of the embodiments of the present application.
In the power supply method, the power supply device, the power supply medium and the communication system of the power amplifier provided by the embodiment of the application, the communication system comprises a baseband processing unit, a modulation and demodulation unit, a radio frequency transceiving unit, a coupler, a power amplifier, a radio frequency front end component, an antenna, an environmental parameter detection unit and a power supply unit; the base band processing unit is connected with the modulation and demodulation unit, the modulation and demodulation unit is connected with the radio frequency transceiving unit, the radio frequency transceiving unit is connected with the coupler, the coupler is connected with the power amplifier, the power amplifier is connected with the radio frequency front end component, the radio frequency front end component is connected with the antenna, and the coupler is also connected with the modulation and demodulation unit; the environment parameter detection unit detects the environment parameters of the environment where the power amplifier is located and sends the environment parameters to the modulation and demodulation unit; the coupler detects the power of the power amplifier and sends the power to the modulation and demodulation unit; the power supply unit is connected between the modulation and demodulation unit and the power amplifier, the modulation and demodulation unit receives the environment parameters and the power, and determines the power supply mode of the power amplifier to be an average power tracking mode or an envelope tracking mode based on the environment parameters and the power. Therefore, the modulation and demodulation unit obtains the power of the power amplifier; acquiring environmental parameters of the environment where the power amplifier is located; and determining that the power amplifier supplies power by adopting an average power tracking mode or an envelope tracking mode based on the power and the environment parameters, and determining a corresponding proper power supply mode based on the power of the power amplifier and the environment parameters of the environment where the power amplifier is located, so that the problem of obvious performance reduction of the power amplifier caused by the fact that the power is supplied by adopting the envelope tracking mode when the environment condition is severe is avoided, and the power amplifier is ensured to have better performance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a power supply method of a power amplifier according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another power amplifier power supply method according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a power supply apparatus of a power amplifier according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The communication system provided by the embodiment of the application can be applied to 3G, 4G, 5G and other global communication scenes or other local area communication scenes; specifically, the system may be used as a transmission system of communication signals, or used as a reception system of communication signals, or used as a transceiving system of communication signals, which is not limited herein.
The communication system provided by the embodiment of the application can exist independently, can be built in terminal communication devices such as mobile phones, tablets and mobile computers, and is used as a system for receiving communication signals and/or transmitting communication signals.
The communication system provided by the embodiment of the application can comprise a baseband processing unit, a modulation and demodulation unit, a radio frequency transceiving unit, a coupler, a power amplifier, a radio frequency front end component, an antenna, an environmental parameter detection unit and a power supply unit; the base band processing unit, the modulation and demodulation unit, the radio frequency transceiving unit, the coupler, the power amplifier, the radio frequency front end component and the antenna are sequentially connected, the coupler is also connected with the modulation and demodulation unit, and the power supply unit is connected between the modulation and demodulation unit and the power amplifier; the environment parameter detection unit detects the environment parameters of the environment where the power amplifier is located and sends the environment parameters to the modulation and demodulation unit; the coupler detects the power of the power amplifier and sends the power to the modulation and demodulation unit; the modulation and demodulation unit receives the environment parameter and the power and determines the power supply mode of the power amplifier to be an average power tracking mode or an envelope tracking mode based on the environment parameter and the power. Therefore, the modulation and demodulation unit obtains the power of the power amplifier and the environmental parameters of the environment where the power amplifier is located, and determines the corresponding proper power supply mode based on the power of the power amplifier and the environmental parameters, so that the problem that the performance of the power amplifier is obviously reduced due to the fact that the power is supplied by adopting the envelope tracking mode when the environmental conditions are severe is solved, and the power amplifier is ensured to have better performance.
Optionally, the environmental parameter may include at least one of temperature, humidity, and salt spray corrosion; correspondingly, the environment parameter detection unit can comprise at least one of a temperature detection sensor, a humidity detection sensor and a smoke corrosion detection sensor, specifically, the temperature detection sensor can detect the real-time temperature of the environment where the power amplifier is located, the humidity detection sensor can detect the real-time humidity of the environment where the power amplifier is located, and the salt spray corrosion detection sensor can detect the real-time smoke corrosion of the environment where the power amplifier is located, so that the real-time detection of multiple aspects of the environment where the power amplifier is located is realized, and the power supply mode of the power amplifier can be accurately determined.
Optionally, the modem unit is configured to determine, based on the power and the environmental parameter, that the power amplifier is powered by using an average power tracking mode or an envelope tracking mode, and specifically may include: comparing the power with a power range of the envelope tracking mode, and comparing the environmental parameter with an applicable environmental parameter range of the envelope tracking mode; when the power exceeding the power range of the envelope tracking mode and/or the environmental parameter exceeding the applicable environmental parameter range of the envelope tracking mode are met, determining that the power amplifier adopts an average power tracking mode for power supply; and when the power is in the power range of the envelope tracking mode and the environment parameter is in the applicable environment parameter range of the envelope tracking mode, determining that the power amplifier supplies power by adopting the envelope tracking mode.
Optionally, the modem unit is configured to determine, based on the power and the environmental parameter, that the power amplifier is powered by using an average power tracking mode or an envelope tracking mode, and specifically may include: judging whether the power is in the power range of the envelope tracking mode; when the power is in the power range of the envelope tracking mode, judging whether the environmental parameters are in the applicable environmental parameter range of the envelope tracking mode; when the environment parameter exceeds the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the average power tracking mode to supply power.
Optionally, after determining whether the power is within the power range of the envelope tracking mode, the modem unit is further specifically configured to: when the power is beyond the power range of the envelope tracking mode, the power amplifier is powered by adopting an average power tracking mode.
Optionally, after determining whether the environmental parameter is within the applicable environmental parameter range of the envelope tracking mode, the modem unit is further specifically configured to: and when the environment parameter is in the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the envelope tracking mode to supply power.
In the embodiment of the application, the modem unit is capable of receiving the power of the power amplifier sent by the coupler and receiving the environmental parameter of the environment where the power amplifier is located detected by the environmental parameter detection unit, and determining the power supply mode of the power amplifier based on the received power and the environmental parameter. Therefore, the power supply method of the power amplifier provided by any embodiment of the application can be executed by a modulation and demodulation unit in a communication system; correspondingly, the power supply device of the power amplifier can be arranged in a modulation and demodulation unit in the communication system; correspondingly, the computer program stored with the steps corresponding to the method of implementing any embodiment of the present application when being executed by the processor may be embedded in a modem unit in the communication system, which is not limited herein.
Optionally, in the power supply method of the power amplifier provided in the embodiment of the present application, determining the power supply mode of the power amplifier based on the power and the environmental parameter may specifically include: when the power and the environmental parameters are both suitable for adopting an ET mode to supply power, determining to use the ET mode to supply power; otherwise, it is determined to use the APT mode for power supply, for example, when parameters of the power supply unit and the power amplifier corresponding to the ET mode change under the environmental conditions of higher temperature and lower temperature, the power supply unit of the power amplifier may be switched to the APT mode for power supply, so as to improve the influence of the environmental parameters on the power amplifier using the ET mode for power supply, so that the power amplifier has higher reliability for power supply, and further can adapt to more extreme environmental conditions.
Hereinafter, a power supply method of a power amplifier, a power supply apparatus of a power amplifier, a storage medium, and a communication system according to an embodiment of the present application are described in detail with reference to fig. 1 to 4.
In some embodiments, as shown in fig. 1, a structure of a communication system provided in an embodiment of the present application is shown. Referring to fig. 1, the communication system may include: a baseband processing unit 410, a modem unit 420, a radio frequency transceiving unit 430, a coupler 490, a power amplifier 440, a radio frequency front end component 450, an antenna 460, an environmental parameter detection unit 470 and a power supply unit 480; the baseband processing unit 410 is connected to the modem unit 420, the modem unit 420 is connected to the rf transceiver unit 430, the rf transceiver unit 430 is connected to the coupler 490, the coupler 490 is connected to the power amplifier 440, the power amplifier 440 is connected to the rf front-end component 450, and the rf front-end component 450 is connected to the antenna 460; the coupler 490 is further connected to the modem unit 420, and the coupler 490 detects the power of the power amplifier 440 and sends the power to the modem unit 420; the environment parameter detecting unit 470 detects the environment parameter of the environment where the power amplifier 440 is located, and sends the environment parameter to the modulation and demodulation unit 420; the power supply unit 480 is connected between the modem unit 420 and the power amplifier 440, and the modem unit 420 receives the power and the environment parameter and determines the power supply mode of the power amplifier 440 to be an average power tracking mode or an envelope tracking mode based on the environment parameter and the power of the power amplifier 440, wherein the power supply mode of the power amplifier 440 is switched by the power supply unit 480.
The baseband processing unit 410, which may also be referred to as a baseband processor, is a component in the terminal communication device, and is equivalent to a protocol processor; the system is mainly responsible for data processing and storage, and the main components are units such as a Digital Signal Processor (DSP), a Microcontroller (MCU), an internal memory (SRAM, Flash) and the like; the main functions are to support several communication standards, to provide multimedia functions and to interface related to multimedia displays, image sensors and audio devices.
The modem unit 420, which may also be referred to as a modem, is used for modulating signals and demodulating signals. Here, modulation is to control a certain parameter of a carrier waveform with a baseband pulse (emitted from the baseband processing unit 410) to form a signal suitable for line transmission. Demodulation refers to that when a modulated signal reaches a receiving end, a carrier wave of an analog signal converted by a modulator is removed to restore the original baseband digital signal (sent to a baseband processing unit). Correspondingly, at the sending end, the modem modulates the digital signal generated by the serial port of the computer into an analog signal which can be transmitted through a telephone line; at the receiving end, the modem converts the analog signal input into computer into corresponding digital signal, and sends the digital signal to the computer interface. In a terminal communication device such as a personal computer, a modem is often used to realize functions such as exchanging data and programs with another computer and accessing an online information service program.
The rf front-end module 450, which may also be referred to as an rf front-end module, integrates two or more discrete devices, such as an rf switch, a low noise amplifier, a filter, a duplexer, and a power amplifier, into one module, thereby improving integration and performance and reducing size. According to different integration modes, the main set antenna radio frequency link can be divided into: FEMiD (integrated radio frequency switch, filter and duplexer), PAMiD (integrated multi-mode multi-band PA and FEMiD), LPAMiD (LNA, integrated multi-mode multi-band PA and FEMiD), etc.; diversity antenna radio frequency links can be divided into: a bifem (integrated radio frequency switch and filter), an LFEM (integrated radio frequency switch, low noise amplifier and filter), etc., or other integration means known to those skilled in the art, and is not limited herein.
The antenna 460 radiates radio waves and receives radio waves. At the transmitting end, modulated high-frequency oscillation current (energy) generated by a transmitter is input into a transmitting antenna through a feed device (the feed device can directly transmit current waves or electromagnetic waves according to different frequencies and forms), and the transmitting antenna converts the high-frequency current or the guided wave (energy) into radio waves, namely free electromagnetic waves (energy) to radiate to the surrounding space; at the receiving end, the radio waves (energy) are converted into high-frequency currents or guided waves (energy) by the receiving antenna, and are transmitted to the receiver through the feed device. From the above process, it can be seen that the antenna is not only a device for radiating and receiving radio waves, but also an energy converter, which is a device for interfacing between the circuit and the space. The transmitter and the receiver may include other components besides the antenna in fig. 1, or may be implemented in other ways known to those skilled in the art, which is not limited herein.
The baseband processing unit 410 is connected to the modem unit 420, the modem unit 420 is connected to the rf transceiver unit 430, the rf transceiver unit 430 is connected to the coupler 490, and the coupler 490 is connected to the power amplifier 440. The rf transceiver unit 430 can provide an input signal to the power amplifier 440 via the coupler 490, and the signal amplified by the power amplifier 440 passes through the rf front-end assembly 450 and is transmitted from the antenna 460.
Wherein the coupler 490 is capable of detecting the power of the power amplifier 440 and sending it to the modem unit 420. The modem unit 420 is also connected to an environment parameter detecting unit 470 and a power supply unit 480 (i.e., an APT/ET unit) for supplying power to the power amplifier 440. Optionally, the environmental parameter detecting unit 470 can detect an environmental parameter of an environment in which the power amplifier 440 is located, which may include at least one of temperature, humidity, and salt spray corrosion, for example. Optionally, the environment parameter detecting unit 470 can also detect an environment parameter of an environment in which the power amplifier 440 is located.
The environment parameter detecting unit 470 can send the detected environment parameter of the environment where the power amplifier 440 is located to the modulation and demodulation unit 420; optionally, the detected environmental parameters of the environment in which the power amplifier 440 is located may also be sent to the modem unit 420. The modem unit 420 can determine whether the power supply unit 480 operates in the APT mode or the ET mode according to the power of the power amplifier 440 and the received environment parameters, for example, the environment parameters of the environment in which the power amplifier 440 is located, and may further include the environment parameters of the environment in which the power amplifier 440 is located, where the environment parameter range operating in the ET mode may adopt a parameter range set by the default of the communication system, or may manually set the environment parameter range operating in the ET mode and the environment parameter range operating in the APT mode, which is not limited herein.
Further, since the parameters of the radio frequency part in the power supply unit 480 (including all the parameters, and the APT mode and the ET mode respectively use their respective parameters) are not the same group of parameters, when the modem unit 420 controls the power supply unit 480 to operate in the APT mode or the ET mode, the baseband processing unit 410 needs to simultaneously switch the parameters corresponding to the APT mode power supply or the ET mode power supply, so that the modem unit 420 operates the power supply unit 480 in an appropriate state, and the power amplifier 440 supplies power in an appropriate mode, thereby ensuring that the communication system as a whole has better communication performance.
For example, the communication system may be a communication system built in a terminal communication device, and the communication system may further include other structural components known to those skilled in the art, which are not described or limited herein.
Optionally, the terminal communication device provided with the communication system may include, besides all structural components of the communication system, other structural components known to those skilled in the art, such as a display and a speaker, which are not described or limited herein.
In one embodiment, the environmental parameter detection unit 470 may include at least one of a temperature detection sensor, a humidity detection sensor, and a salt spray corrosion detection sensor; the temperature detection sensor detects the real-time temperature of the environment where the power amplifier is located; the humidity detection sensor detects the real-time humidity of the environment where the power amplifier is located; the salt spray corrosion detection sensor detects real-time salt spray corrosion of the environment where the power amplifier is located.
The parameter of the power amplifier powered in the ET mode is not suitable any more when the power amplifier is applied to an environment with a higher temperature or a lower temperature after the power amplifier is debugged at room temperature, so that the performance of the power amplifier is obviously deteriorated.
Similarly, the large variation of humidity may make parameters of the power amplifier powered in the ET mode no longer applicable under a certain humidity condition, resulting in significant performance degradation of the power amplifier. Similarly, the large change of the salt spray corrosion can also make the parameters of the power amplifier powered in the well-tested ET mode no longer applicable under a certain salt spray corrosion condition, resulting in obvious deterioration of the performance of the power amplifier.
Therefore, the environmental parameters of the environment where the power amplifier is located are obtained, the power amplifier can be powered in an ET mode, and the power amplifier can be ensured to work in the ET mode under reasonable environmental conditions without the phenomenon that the performance of the power amplifier is seriously deteriorated, so that the power amplifier can be ensured to have better performance.
Thus, a temperature sensor may be provided for temperature or temperature sensing may be accomplished using any type of temperature sensing structure and method known to those skilled in the art. Similarly, a humidity sensor may be provided, illustratively for humidity, or any type of humidity detection structure and method known to those skilled in the art may be used to achieve humidity detection. Similarly, for salt spray corrosion, a salt spray concentration detection sensor can be arranged, or salt spray corrosion detection can be realized by adopting any salt spray corrosion detection structure and method known by the technical personnel in the field. Or, the output power of the power amplifier can be directly detected, and the output power is compared with a preset theoretical value of power; and if the detected output power is smaller than the theoretical power value, determining that the salt spray corrosion condition is not suitable for supplying power by adopting an ET mode.
By the arrangement, the environment of the power amplifier 440 can be detected in various aspects, the comprehensiveness and accuracy of environment detection are improved, and the power supply mode of the power amplifier 440 can be determined more accurately.
In one embodiment, the environmental parameter may include at least one of temperature, humidity, and salt spray corrosion. Specifically, an environmental parameter that has a large influence on the performance of the power amplifier 440 may be selected, and the determination of the power supply mode of the power amplifier 440 may be performed in combination with the power; or, the first two environmental parameters that have a large influence on the performance of the power amplifier 440 among the three environmental parameters may be selected, and the power supply mode of the power amplifier 440 is determined by combining the power; or, the three environmental parameters mentioned above are used together with the power to determine the power supply mode of the power amplifier 440, which is not limited herein.
In other embodiments, the environmental parameter may further include other parameters characterizing the environmental condition, which are known by those skilled in the art and may affect the performance of the power amplifier powered in the ET mode, and are not described or limited herein.
The embodiment of the present application further provides a power supply method for a power amplifier, which can be executed by a modem unit of a communication system in any embodiment of the present application, so as to achieve corresponding beneficial effects, and the method provided in the embodiment of the present application is exemplarily described below with reference to fig. 2 and fig. 3.
In one embodiment, as shown in fig. 2, a power supply method for a power amplifier provided in the embodiment of the present application may be implemented in a manner of software and/or hardware in a modem unit, that is, may be integrated on the modem unit, and the method includes the following steps.
In S110, the power of the power amplifier transmitted by the coupler is acquired.
The power amplifier, which may be referred to as a "power amplifier" for short, refers to an amplifier that can generate a maximum power output to drive a load (e.g., a speaker) under a given distortion rate condition. In an actual product structure, the power amplifier may be a finished product having a package structure, or may be a power amplifying circuit composed of circuit components, and is not limited herein. Optionally, the power amplifier may be a radio frequency power amplifier, and may be applied to terminal communication devices such as a mobile phone.
In the embodiment of the application, the power of the power amplifier is one of the reference parameters for determining the power supply mode of the power amplifier. In this step, the modem unit receives the power of the power amplifier transmitted by the coupler, and provides basic data for determining the power supply mode of the power amplifier in the subsequent S130.
Alternatively, the coupler may obtain the power of the power amplifier by adjusting an operating parameter of the power amplifier. Alternatively, the power of the power amplifier may be obtained in other ways known to those skilled in the art, and is not limited herein.
In S120, the environmental parameter of the environment in which the power amplifier is located, which is transmitted by the environmental parameter detection unit, is acquired.
When the environment of the power amplifier changes, the nonlinear effect of the power amplifier under ET mode power supply is obvious, which may cause that the parameters of the power amplifier that is tested at a certain temperature (e.g., room temperature) are no longer applicable, and cannot be applicable after simple adjustment. The environmental parameter is thus also one of the reference parameters determining the supply mode of the power amplifier, so that the power amplifier can be supplied with the appropriate supply mode.
For example, a sensor for detecting an environmental parameter of an environment in which the power amplifier is located may be provided, and the environmental parameter of the environment in which the power amplifier is located may be detected in real time or periodically at preset intervals by the sensor and transmitted to the power supply device of the power amplifier. Correspondingly, the power supply device of the power amplifier can be arranged in the modulation and demodulation unit, and the sensor can be integrated in the environment parameter detection unit. Therefore, the power supply device in the modulation and demodulation unit can receive the environmental parameters so as to realize the acquisition of the environmental parameters of the environment where the power amplifier is located.
In one embodiment, the environmental parameter may include at least one of temperature, humidity, and salt spray corrosion.
In S130, it is determined whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameters.
The modem unit (for example, a power supply device of a power amplifier therein) determines, by determining the power and the environmental parameter, whether the obtained power and environmental parameter are suitable for power supply in the average power tracking mode or in the envelope tracking mode, thereby determining whether the power amplifier is powered in the average power tracking mode or in the envelope tracking mode.
Illustratively, when the power is in a power range of the ET mode power supply and the environmental parameter is in a range of the environmental parameter applicable to the ET mode power supply, the ET mode power supply is adopted; otherwise, the APT mode is adopted for power supply.
In the power supply method of the power amplifier provided by the embodiment of the application, the modulation and demodulation unit obtains the power of the power amplifier; acquiring environmental parameters of the environment where the power amplifier is located; and determining that the power amplifier is powered by adopting an average power tracking mode or an envelope tracking mode based on the power and the environment parameters, and determining a corresponding proper power supply mode based on the power of the power amplifier and the environment parameters of the environment where the power amplifier is located.
In the following, an exemplary description is given of how the supply mode of the power amplifier is determined based on power and environmental parameters in particular.
In an embodiment, on the basis of fig. 2, S130 may specifically include:
comparing the power with a power range of the envelope tracking mode, and comparing the environmental parameter with an applicable environmental parameter range of the envelope tracking mode;
when the power range that the power exceeds the envelope tracking mode and/or the applicable environment parameter range that the environment parameter exceeds the envelope tracking mode are met, determining that the power amplifier adopts an average power tracking mode for power supply;
and when the power is in the power range of the envelope tracking mode and the environment parameter is in the applicable environment parameter range of the envelope tracking mode, determining that the power amplifier supplies power by adopting the envelope tracking mode.
Specifically, the power range of the envelope tracking mode is the power range of the corresponding power amplifier when the ET mode is adopted for power supply, and may be equal to or greater than 18dBm, for example; the applicable environment parameter range of the envelope tracking mode is the range of the corresponding environment parameter when the power amplifier powered by the ET mode can keep better performance, and can be the range of the environment parameter obtained by up-down floating a certain range on the basis of the environment parameter for debugging the power amplifier; or the power amplifier can maintain better performance during debugging the power amplifier, that is, the range of the environmental parameter corresponding to the condition that the parameter representing the performance fluctuates within the allowable error range, or the range of the environmental parameter determined in other ways known to those skilled in the art, which is not limited herein.
Based on the above, the detected power and environmental parameters are respectively and correspondingly compared with the applicable power range and environmental parameter range of the ET mode power supply; if the two are met, determining that the power amplifier adopts an ET mode for power supply; and if one of the signals is not satisfied or both of the signals are not satisfied, determining that the power amplifier supplies power in an APT mode.
Therefore, the power supply mode of the power amplifier is determined based on the detected power and environmental parameters and in combination with the preset power range and environmental parameter range applicable to ET mode power supply, so that the power amplifier can adopt the proper mode to supply power and has improved performance.
It can be understood that the above-mentioned determinations of power and environmental parameters may be performed synchronously or step-by-step; when the step-by-step operation is carried out, the environmental parameters can be judged firstly and then the power can be judged, and the environmental parameters can also be judged firstly and then the power can be judged. The following takes the determination of the power and then the environmental parameter as an example, and a specific process for determining the power supply mode of the power amplifier based on the detected power and environmental parameter is exemplarily described.
In an embodiment, on the basis of fig. 2, S130 may specifically include:
judging whether the power is in the power range of the envelope tracking mode;
when the power is in the power range of the envelope tracking mode, judging whether the environmental parameters are in the applicable environmental parameter range of the envelope tracking mode;
when the environment parameter exceeds the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the average power tracking mode to supply power.
When the detected power is in the power range of the envelope tracking mode, whether the detected environmental parameters are in the applicable environmental parameter range of the envelope tracking mode is further judged, so that whether the environmental conditions of the power amplifier are applicable to supplying power to the power amplifier in the envelope tracking mode is determined.
For example, it may be determined whether the detected temperature, humidity, and salt spray corrosion meet the applicable range of the envelope tracking mode power supply.
When the detected environmental parameters exceed the applicable environmental parameter range of the envelope tracking mode, it indicates that the parameters of the power amplifier are affected more seriously if the power is supplied in the envelope tracking mode under the environmental condition where the power amplifier is located, so that the performance of the power amplifier may be deteriorated more seriously. Thus, in order to avoid a serious problem of performance deterioration of the power amplifier, when the detected environmental parameter is beyond the applicable environmental parameter range of the envelope tracking mode, the power amplifier is determined to be powered by the average power tracking mode.
In this way, the power supply mode of the power amplifier is determined.
In one embodiment, after determining whether the power is within the power range of the envelope tracking mode, the method further comprises:
when the power is beyond the power range of the envelope tracking mode, the power amplifier is powered by adopting an average power tracking mode.
The power range of the envelope tracking mode and the power range of the average power tracking mode are two power ranges covering the power range of the power amplifier and having no overlap, for example, the power range of the envelope tracking mode is equal to or greater than 18dBm, and the power range of the average power tracking mode is less than 18 dBm.
When the detected power exceeds the power range of the envelope tracking mode, the power is not suitable for being supplied by the envelope tracking mode, so that the power amplifier can be determined to be supplied by the average power tracking mode.
Illustratively, in conjunction with the above, if the detected power is 17dBm, 15dBm, 13dBm, or any other power level less than 18dBm, indicating that it is not suitable for the envelope tracking mode power supply, it may be determined that the power amplifier is powered in the average power tracking mode.
In this way, the power supply mode of the power amplifier is determined.
In one embodiment, after determining whether the environment parameter is within the applicable environment parameter range of the envelope tracking mode, the method further comprises:
and when the environment parameter is in the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the envelope tracking mode to supply power.
In particular, in conjunction with the above, it is determined that the power amplifier is powered in envelope tracking mode only if the detected power is within a power range of the envelope tracking mode and the detected environmental parameter is within an applicable environmental parameter range of the envelope tracking mode. Therefore, the power amplifier can be ensured to have better performance while achieving better power saving effect under higher power.
In this way, the power supply mode of the power amplifier is determined.
In an embodiment, as shown in fig. 3, a flow of power amplifier power supply mode selection is shown for another power amplifier power supply method provided in the embodiment of the present application, that is, a selection process of power amplifier supplying power in an APT mode or supplying power in an ET mode is shown. The method can also be implemented in software and/or hardware provided in a modem unit, and comprises the following steps.
In S201, the power amplifier starts to operate and needs to be supplied with power.
That is, the power amplifier starts to operate and needs to be supplied with power.
In S202, it is determined whether the power is within the power range of the envelope tracking mode.
Optionally, the method may further include the step of detecting the power of the power amplifier by the coupler and sending the detected power to the modem unit.
Based on this, the steps can be: the modem unit determines whether the power of the power amplifier is within a power range including a tracking mode power supply.
If the judgment result is yes (Y), continuing the judgment and executing S204; if the determination result is no (N), S203 is executed.
In S203, the power amplifier is powered in an average power tracking mode.
That is, when the power of the power amplifier exceeds the power range of the power amplifier supplied in the envelope tracking mode, it can be directly determined that the power amplifier is supplied in the average power tracking mode.
In S204, it is determined whether the environment parameter is within the applicable environment parameter range of the envelope tracking mode.
Optionally, the method may further include detecting an environmental parameter of an environment in which the power amplifier is located by an environmental parameter detecting unit, and sending the detected environmental parameter to the modem unit.
Based on this, the steps can be: when the power of the power amplifier is in the power range supplied by the envelope tracking mode, the modulation and demodulation unit continuously judges whether the environmental parameters are in the range of the use environmental parameters of the envelope tracking mode.
If the determination result is yes (Y), S205 is executed; if the determination result is no (N), S203 is executed.
In S205, the power amplifier is powered in envelope tracking mode.
That is, when the detected power is within the power range of the envelope tracking mode and the detected environmental parameter is within the applicable environmental parameter range of the envelope tracking mode, the modem unit determines that the power amplifier is powered in the envelope tracking mode.
In the power supply method for the power amplifier provided by the embodiment of the application, the modulation and demodulation unit can ensure that the condition of the power amplifier working in the ET mode power supply is reasonable through judging the detected power and the environmental parameters, and further ensure that the performance of the power amplifier is better.
For example, taking an environmental parameter as a temperature, compared with the prior art, by increasing the judgment on the temperature, when the parameter of the power amplifier powered in the ET mode is changed under the environmental conditions of a higher temperature and a lower temperature, the power supply unit of the power amplifier can be controlled to be switched to the APT mode for power supply, so that the reliability of the power supply of the power amplifier is higher, and the power amplifier can adapt to more extreme environmental conditions.
In particular, the requirement of the uplink 256 Quadrature Amplitude Modulation (QAM) of 5G on the Error Vector Magnitude (EVM) is high, which may cause the situation that the basic index exceeds the standard in the ET mode power supply under the extreme condition. For this situation, it is necessary to switch to the APT mode power supply under certain environmental conditions by using the power supply method of the power amplifier provided in the embodiment of the present application.
The method provided by the embodiment of the application can also be applied to scenes that the power supply mode of the power amplifier needs to be switched under other conditions. For example, under the condition of high humidity or salt spray corrosion requiring high reliability, the power amplifier can be powered in an APT mode to ensure corresponding reliability.
In the power supply method of the power amplifier provided by the embodiment of the application, the modulation and demodulation unit obtains the power of the power amplifier; acquiring environmental parameters of the environment where the power amplifier is located; and determining that the power amplifier supplies power by adopting an average power tracking mode or an envelope tracking mode based on the power and the environment parameters, and determining a corresponding proper power supply mode based on the power of the power amplifier and the environment parameters of the environment where the power amplifier is located, so that the problem of obvious performance reduction of the power amplifier caused by the fact that the power is supplied by adopting the envelope tracking mode when the environment condition is severe is avoided, and the power amplifier is ensured to have better performance.
It should be understood that although the steps in the flowcharts of fig. 2 and 3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2 and 3 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least some of the sub-steps or stages of other steps.
On the basis of the foregoing embodiments, embodiments of the present application further provide a power supply apparatus for a power amplifier, which can be used to execute the steps of the method provided in any embodiment of the present application, so as to achieve corresponding beneficial effects. Alternatively, the power supply device of the power amplifier may be disposed in a modem unit in a communication system.
In one embodiment, fig. 4 illustrates a power supply arrangement for a power amplifier. Referring to fig. 4, an embodiment of the present application provides a power supply apparatus for a power amplifier, where the apparatus 30 includes: a first parameter obtaining module 310, configured to obtain the power of the power amplifier transmitted by the coupler; a second parameter obtaining module 320, configured to obtain an environmental parameter of an environment in which the power amplifier is located, where the environmental parameter is sent by the environmental parameter detecting unit; a power mode determination module 330, configured to determine whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameter.
In an embodiment, the power supply mode determining module 330 is specifically configured to:
comparing the power with a power range of the envelope tracking mode, and comparing the environmental parameter with an applicable environmental parameter range of the envelope tracking mode;
when the power exceeding the power range of the envelope tracking mode and/or the environment parameter exceeding the applicable environment parameter range of the envelope tracking mode are met, determining that the power amplifier adopts an average power tracking mode for power supply;
and when the power is in the power range of the envelope tracking mode and the environment parameter is in the applicable environment parameter range of the envelope tracking mode, determining that the power amplifier supplies power by adopting the envelope tracking mode.
In an embodiment, the power supply mode determining module 330 is specifically configured to:
judging whether the power is in the power range of the envelope tracking mode;
when the power is in the power range of the envelope tracking mode, judging whether the environmental parameters are in the applicable environmental parameter range of the envelope tracking mode;
when the environment parameter exceeds the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the average power tracking mode to supply power.
In an embodiment, the power supply mode determining module 330 is specifically configured to:
after determining whether the power is within a power range of the envelope tracking mode;
when the power is beyond the power range of the envelope tracking mode, the power amplifier is powered by adopting an average power tracking mode.
In an embodiment, the power supply mode determining module 330 is specifically configured to:
after judging whether the environment parameter is in the applicable environment parameter range of the envelope tracking mode;
and when the environment parameter is in the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the envelope tracking mode to supply power.
For specific limitations of the power supply device of the power amplifier, reference may be made to the above limitations of the power supply method of the power amplifier, and details are not repeated here. The respective modules in the power supply apparatus of the power amplifier may be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the following steps:
acquiring the power of a power amplifier transmitted by a coupler;
acquiring the environmental parameters of the environment where the power amplifier is located, which are sent by an environmental parameter detection unit;
based on the power and environmental parameters, it is determined whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameters, comprising:
comparing the power with a power range of the envelope tracking mode, and comparing the environmental parameter with an applicable environmental parameter range of the envelope tracking mode;
when at least one of the power range that the power exceeds the envelope tracking mode and the applicable environment parameter range that the environment parameter exceeds the envelope tracking mode is met, determining that the power amplifier supplies power in an average power tracking mode;
and when the power is in the power range of the envelope tracking mode and the environment parameter is in the applicable environment parameter range of the envelope tracking mode, determining that the power amplifier supplies power by adopting the envelope tracking mode.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameters, comprising:
judging whether the power is in the power range of the envelope tracking mode;
when the power is in the power range of the envelope tracking mode, judging whether the environmental parameters are in the applicable environmental parameter range of the envelope tracking mode;
when the environment parameter exceeds the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the average power tracking mode to supply power.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after determining whether the power is within the power range of the envelope tracking mode, the method further comprises:
when the power is beyond the power range of the envelope tracking mode, the power amplifier is powered by adopting an average power tracking mode.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after determining whether the environmental parameter is within the applicable environmental parameter range of the envelope tracking mode, the method further comprises:
and when the environment parameter is in the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts the envelope tracking mode to supply power.
The computer readable storage medium provided by the embodiment of the application stores a computer program, and when the computer program is executed by a processor, the computer program can obtain the power of the power amplifier; acquiring environmental parameters of the environment where the power amplifier is located; and determining that the power amplifier supplies power by adopting an average power tracking mode or an envelope tracking mode based on the power and the environment parameters, and determining a corresponding proper power supply mode based on the power of the power amplifier and the environment parameters of the environment where the power amplifier is located, so that the problem of obvious performance reduction of the power amplifier caused by the fact that the power is supplied by adopting the envelope tracking mode when the environment condition is severe is avoided, and the power amplifier is ensured to have better performance.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM is available in many forms, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), and the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A power supply method of a power amplifier is executed by a modulation and demodulation unit in a communication system, and the communication system further comprises a coupler, an environmental parameter detection unit and the power amplifier; wherein the method comprises the following steps:
acquiring the power of a power amplifier transmitted by a coupler;
acquiring the environmental parameters of the environment where the power amplifier is located, which are sent by an environmental parameter detection unit;
determining whether the power amplifier is powered in an average power tracking mode or in an envelope tracking mode based on the power and the environmental parameter.
2. The method of claim 1, wherein the determining, based on the power and the environmental parameter, that the power amplifier is powered in an average power tracking mode or in an envelope tracking mode comprises:
comparing the power to a power range of the envelope tracking mode and comparing the environmental parameter to a range of applicable environmental parameters of the envelope tracking mode;
when the power exceeding the power range of the envelope tracking mode and/or the environmental parameter exceeding the applicable environmental parameter range of the envelope tracking mode are met, determining that the power amplifier supplies power in an average power tracking mode;
and when the power is in the power range of the envelope tracking mode and the environment parameter is in the applicable environment parameter range of the envelope tracking mode, determining that the power amplifier supplies power in the envelope tracking mode.
3. The method of claim 1, wherein determining, based on the power and the environmental parameter, that the power amplifier is powered in an average power tracking mode or in an envelope tracking mode comprises:
determining whether the power is within a power range of the envelope tracking mode;
when the power is in the power range of the envelope tracking mode, judging whether the environment parameter is in the applicable environment parameter range of the envelope tracking mode;
and when the environment parameter exceeds the applicable environment parameter range of the envelope tracking mode, the power amplifier adopts an average power tracking mode to supply power.
4. The method of claim 3, after the determining whether the power is within a power range of the envelope tracking mode, the method further comprising:
when the power exceeds the power range of the envelope tracking mode, the power amplifier is powered by adopting an average power tracking mode.
5. The method of claim 3, after said determining whether the environmental parameter is within a range of applicable environmental parameters of the envelope tracking mode, the method further comprising:
and when the environment parameter is in the range of the applicable environment parameter of the envelope tracking mode, the power amplifier supplies power by adopting the envelope tracking mode.
6. The method of any one of claims 1 to 5, the environmental parameter comprising at least one of temperature, humidity, and salt spray corrosion.
7. A communication system, comprising: the system comprises a baseband processing unit, a modulation and demodulation unit, a radio frequency transceiving unit, a coupler, a power amplifier, a radio frequency front end component, an antenna, an environmental parameter detection unit and a power supply unit;
the baseband processing unit is connected with the modem unit, the modem unit is connected with the rf transceiver unit, the rf transceiver unit is connected with the coupler, the coupler is connected with the power amplifier, the power amplifier is connected with the rf front-end component, the rf front-end component is connected with the antenna, and the coupler is also connected with the modem unit;
the environment parameter detection unit detects environment parameters of the environment where the power amplifier is located and sends the environment parameters to the modulation and demodulation unit;
the coupler detects the power of the power amplifier and sends the power to the modulation and demodulation unit;
the power supply unit is connected between the modulation and demodulation unit and the power amplifier, the modulation and demodulation unit receives the environment parameter and the power, and determines that the power supply mode of the power amplifier is an average power tracking mode or an envelope tracking mode based on the environment parameter and the power.
8. The communication system according to claim 7, wherein the environmental parameter detection unit includes at least one of a temperature detection sensor, a humidity detection sensor, and a salt spray corrosion detection sensor;
the temperature detection sensor detects the real-time temperature of the environment where the power amplifier is located;
the humidity detection sensor detects the real-time humidity of the environment where the power amplifier is located;
and the salt spray corrosion detection sensor detects the real-time salt spray corrosion of the environment where the power amplifier is located.
9. A power supply device for a power amplifier provided in the modem unit in the communication system according to claim 7 or 8, wherein the device comprises:
the first parameter acquisition module is used for acquiring the power of the power amplifier transmitted by the coupler;
the second parameter acquisition module is used for acquiring the environmental parameters of the environment where the power amplifier is located, which are sent by the environmental parameter detection unit;
and the power supply mode determining module is used for determining that the power amplifier adopts an average power tracking mode to supply power or adopts an envelope tracking mode to supply power based on the power and the environmental parameters.
10. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, realizes the steps of the method of any one of claims 1 to 6.
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