Radio frequency system, power amplification method of radio frequency system and related product

Abstract

The invention provides a radio frequency system, a power amplification method of the radio frequency system and a related product. The radio frequency system comprises a power supply module, a radio frequency chip, a voltage conversion circuit and a power amplifier. The power supply module is configured to provide an initial power supply voltage; the voltage conversion circuit is electrically connected with the power supply module and the radio frequency chip, the voltage conversion circuit is configured to receive an initial power supply voltage and output a target power supply voltage, and the target power supply voltage is related to the strength of a signal received by the radio frequency chip; the power amplifier is electrically connected with the radio frequency chip and the voltage conversion circuit, the power amplifier is configured to receive the target power supply voltage and the Wi-Fi radio frequency signal from the radio frequency chip and amplify the power of the Wi-Fi radio frequency signal to target power, and the size of the target power is related to the target power supply voltage. When the received signal strength is high, the target power supply voltage input into the power amplifier can be slightly reduced, the saturation power of the power amplifier can be reduced, and then the power consumption of a radio frequency system is reduced.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to a radio frequency system, a power amplification method for the radio frequency system, and related products. Background Technology

[0002] With the continuous advancement of technology, the functions of smartphones and other electronic devices are becoming increasingly sophisticated, and users' demands for data transmission speed and network stability are also constantly growing. Taking Wi-Fi communication as an example, high-performance Wi-Fi technology can provide faster data transmission rates and more stable connections, meeting users' expectations for a smooth online experience.

[0003] High-power Wi-Fi designs can significantly improve communication coverage. This means users can enjoy a stable network connection even when far from the router, especially in large residential or office environments. Furthermore, in weak signal environments, high-power Wi-Fi improves communication quality, reduces data transmission interruptions and latency, thus providing a smoother online experience.

[0004] While high-power Wi-Fi can provide a better communication experience, it may also lead to increased device power consumption. Therefore, providing a low-power radio frequency system has become a technical problem that needs to be solved. Summary of the Invention

[0005] This application provides a low-power radio frequency system, a power amplification method for the radio frequency system, an electronic device having the radio frequency system, and a computer storage medium.

[0006] In a first aspect, this application provides a radio frequency system, comprising:

[0007] The power module is configured to provide the initial power supply voltage;

[0008] Radio frequency chips;

[0009] A voltage conversion circuit is electrically connected to the power module and the radio frequency chip. The voltage conversion circuit is configured to receive the initial power supply voltage and output a target power supply voltage, wherein the target power supply voltage is related to the signal strength received by the radio frequency chip.

[0010] A power amplifier electrically connected to the radio frequency chip and the voltage conversion circuit is configured to receive the target power supply voltage and a Wi-Fi radio frequency signal from the radio frequency chip, and amplify the power of the Wi-Fi radio frequency signal to a target power, the magnitude of which is related to the target power supply voltage.

[0011] This application provides a radio frequency (RF) system, comprising a power module, an RF chip, a voltage conversion circuit, and a power amplifier. The power module is configured to provide an initial power supply voltage. The voltage conversion circuit is electrically connected to the power module and the RF chip, and is configured to receive the initial power supply voltage and output a target power supply voltage, the target power supply voltage being related to the signal strength received by the RF chip. The power amplifier is electrically connected to the RF chip and the voltage conversion circuit, and is configured to receive the target power supply voltage and a Wi-Fi RF signal from the RF chip, and amplify the power of the Wi-Fi RF signal to a target power, the magnitude of which is related to the target power supply voltage. Through the above design, the target power of the Wi-Fi RF signal amplified by the power amplifier in the RF system is related to the target power supply voltage input to the power amplifier and the signal strength received by the RF chip. For example, when the received signal strength is strong, the target power supply voltage input to the power amplifier can be slightly reduced, which can reduce the saturation power of the power amplifier and thus reduce the power consumption of the RF system.

[0012] Secondly, this application provides an electronic device including the radio frequency system described above, and the electronic device further includes a plurality of antenna radiators, each of the antenna radiators being connected to at least one of the power amplifiers.

[0013] Thirdly, this application provides a power amplification method for a radio frequency system, the method comprising:

[0014] The target power supply voltage of the power amplifier is determined based on the signal strength of the received Wi-Fi radio frequency signal.

[0015] The power of the Wi-Fi radio frequency signal to be transmitted is amplified to the target power based on the target power supply voltage.

[0016] Fourthly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements the steps in the above-described method.

[0017] Fifthly, this application provides a computer storage medium storing an executable program, which, when executed by a processor, implements the above-described method. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below;

[0019] Figure 1 This is a schematic diagram of the fixed envelope of the power amplifier's supply voltage;

[0020] Figure 2 This is a schematic diagram of the electronic device provided in the embodiments of this application;

[0021] Figure 3 This is a partial architecture diagram of the radio frequency system provided in the embodiments of this application;

[0022] Figure 4 This is a partial architecture diagram of the power amplifier provided in an embodiment of this application;

[0023] Figure 5 This is a circuit topology diagram of the power amplifier provided in the embodiments of this application;

[0024] Figure 6 This is a schematic diagram showing that the power amplifier provided in the embodiments of this application has three power supply voltage levels;

[0025] Figure 7 This is another partial architecture diagram of the radio frequency system provided in the embodiments of this application;

[0026] Figure 8 This is a schematic diagram of the first structure of the voltage conversion circuit provided in the embodiments of this application;

[0027] Figure 9 This is a schematic diagram of a second structure of the voltage conversion circuit provided in the embodiments of this application;

[0028] Figure 10 This is a schematic diagram of the third structure of the voltage conversion circuit provided in the embodiments of this application;

[0029] Figure 11 This is a schematic diagram of the fourth structure of the voltage conversion circuit provided in the embodiments of this application;

[0030] Figure 12 This is a schematic diagram of the fifth structure of the voltage conversion circuit provided in the embodiments of this application;

[0031] Figure 13 This is a schematic diagram of the sixth structure of the voltage conversion circuit provided in the embodiments of this application;

[0032] Figure 14 This is a flowchart of the power amplification method for a radio frequency system provided in the embodiments of this application;

[0033] Figure 15 yes Figure 14 Flowchart of the first implementation of the provided power amplification method;

[0034] Figure 16 yes Figure 14 A flowchart for generating the first target power supply voltage in the provided power amplification method;

[0035] Figure 17yes Figure 14 A flowchart for generating the second target power supply voltage in the provided power amplification method;

[0036] Figure 18 yes Figure 14 A flowchart for generating the third target power supply voltage in the provided power amplification method;

[0037] Figure 19 yes Figure 14 A flowchart for generating the fourth target power supply voltage in the provided power amplification method;

[0038] Figure 20 This is a schematic diagram of the framework of the electronic device provided in the embodiments of this application.

[0039] Explanation of some of the icon numbers:

[0040] Electronic device 1000; Radio frequency system 100; Power supply module 10; Radio frequency chip 20; Voltage conversion circuit 30; Power amplifier 40; Initial power supply voltage Vin; Target power supply voltage VCC; Amplification module 41; Third switching unit 42; Transistor M1; Radio frequency choke circuit 412; Input / output matching circuit 413; First amplification module 421; Second amplification module 422; First power amplifier 431; Second power amplifier 432; Front-end transceiver circuit 51; Antenna radiator 61; First switching unit 31; First voltage divider element 32; Second switching unit 33; Second voltage divider element 34; Voltage regulator circuit 35; Reference voltage source 351; Differential voltage amplifier circuit 352; Switching transistor 353; Memory 200; Processor 300. Detailed Implementation

[0041] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without creative effort are within the protection scope of this application.

[0042] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0043] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device comprising one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0044] The common application scenario for short-range communication (such as Wi-Fi communication, Bluetooth communication, etc.) is indoors, where walls and other structures can severely obstruct signal strength.

[0045] Please see Figure 1 , Figure 1 This is a schematic diagram of a power amplifier with a fixed supply voltage envelope. To improve the wall-penetrating performance of short-range communication, the power amplifier in mobile terminals (and subsequent electronic devices) is generally designed with a relatively large and relatively fixed supply voltage to meet weak field requirements. On the one hand, the fixed supply voltage of the power amplifier prevents further increases in its maximum power amplification capability; for example, the maximum output power of the power amplifier is 22dBm, and cannot be further increased. However, current applications still have higher power requirements, leading to the inability to meet these higher power demands.

[0046] Furthermore, in scenarios relatively close to signal transmitting equipment (i.e., near-field), the output power of the power amplifier does not need to be too high (e.g., 10–20 dBm) to meet the requirements. The relatively high supply voltage of the power amplifier leads to significant power consumption, resulting in substantial power loss in the mobile terminal (and subsequent electronic devices).

[0047] Please see Figure 2 , Figure 2 This is a schematic diagram of the electronic device 1000 provided in an embodiment of this application. This application provides a radio frequency system 100 and an electronic device 1000 having the radio frequency system 100. The electronic device 1000 includes, but is not limited to, devices with communication functions such as mobile phones, tablets, laptops, computers, wearable devices, drones, and robots. This application uses a mobile phone as an example for illustration; other electronic devices can refer to this embodiment. The circuit structure of the radio frequency system 100 is illustrated below with reference to the accompanying drawings.

[0048] Please see Figure 3 , Figure 3 This is a partial architecture diagram of the radio frequency system 100 provided in an embodiment of this application. The radio frequency system 100 includes a power supply module 10, a radio frequency chip 20, a voltage conversion circuit 30, and a power amplifier 40.

[0049] Please see Figure 3 The power module 10 is configured to provide an initial power supply voltage Vin. Optionally, the power module 10 may include, but is not limited to, a battery, a power management chip, etc. Optionally, the battery may be a single cell with an initial power supply voltage Vin of approximately 4.2V. Optionally, the battery may be a dual-cell battery, with the initial power supply voltage Vin of the power module 10 being approximately 4.2V after half-voltage processing.

[0050] Please see Figure 3 The voltage conversion circuit 30 is electrically connected to the power module 10 and the radio frequency chip 20. Specifically, the voltage conversion circuit 30 is electrically connected to the power module 10 and the radio frequency chip 20 via electrical connection lines.

[0051] Please see Figure 3 The voltage conversion circuit 30 is configured to receive the initial power supply voltage Vin from the power module 10 and output a target power supply voltage to the power amplifier 40. In other words, the voltage conversion circuit 30 converts the initial power supply voltage Vin into a target power supply voltage under the control of the radio frequency chip 20. The control signal of the radio frequency chip 20 affects the magnitude of the target power supply voltage VCC. Optionally, the target power supply voltage VCC can be the same as the initial power supply voltage Vin, or the target power supply voltage VCC can be greater than the initial power supply voltage Vin, i.e., the voltage conversion circuit 30 has a boost function; or the target power supply voltage VCC can be less than the initial power supply voltage Vin, i.e., the voltage conversion circuit 30 has a buck function. In other words, the voltage conversion circuit 30 enables adjustable output voltage from the power module 10, that is, enables adjustable supply voltage to the power amplifier 40.

[0052] The target power supply voltage VCC is related to the received signal strength (RSSI) of the RF chip 20. Optionally, the larger the Wi-Fi RF signal strength received by the RF chip 20, the smaller the target power supply voltage VCC. Alternatively, the smaller the Wi-Fi RF signal strength received by the RF chip 20, the larger the target power supply voltage VCC.

[0053] Please see Figure 3 The power amplifier 40 is electrically connected to the radio frequency chip 20 and the voltage conversion circuit 30. The power amplifier 40 includes a radio frequency signal input terminal and a power supply terminal. The radio frequency signal input terminal is electrically connected to the radio frequency chip 20. The power supply terminal is electrically connected to the voltage conversion circuit 30.

[0054] The power amplifier 40 is configured to receive the target power supply voltage VCC from the voltage conversion circuit 30 and the Wi-Fi radio frequency signal from the radio frequency chip 20, and amplify the power of the Wi-Fi radio frequency signal to the target power.

[0055] The target power is related to the target power supply voltage VCC. Optionally, the target power increases as the target power supply voltage VCC increases, and decreases as the target power supply voltage VCC decreases.

[0056] Thus, when the target power supply voltage VCC is greater than the initial power supply voltage Vin, the output power of the power amplifier 40 can be further increased to meet the needs of more weak field high power scenarios.

[0057] In the near field, the signal strength received by the RF chip 20 is relatively large, and the target power supply voltage VCC is relatively small (e.g., less than the initial power supply voltage Vin), which can also meet the power requirements and signal strength requirements. The power supply voltage of the power amplifier 40 is less than the initial power supply voltage Vin, which reduces the power consumption compared to when the power supply voltage was not adjusted.

[0058] This application provides a radio frequency (RF) system 100, which includes a power module 10, an RF chip 20, a voltage conversion circuit 30, and a power amplifier 40. The power module 10 is configured to provide an initial power supply voltage Vin. The voltage conversion circuit 30 is electrically connected to the power module 10 and the RF chip 20, and is configured to receive the initial power supply voltage Vin and output a target power supply voltage VCC, wherein the target power supply voltage VCC is related to the signal strength received by the RF chip 20. The power amplifier 40 is electrically connected to the RF chip 20 and the voltage conversion circuit 30, and is configured to receive the target power supply voltage VCC and a Wi-Fi RF signal from the RF chip 20, and amplify the power of the Wi-Fi RF signal to a target power, wherein the target power is related to the target power supply voltage VCC. The target power of the Wi-Fi radio frequency signal amplified by the power amplifier 40 in the radio frequency system 100 is related to the target power supply voltage VCC input to the power amplifier 40 and the signal strength received by the radio frequency chip 20. For example, when the received signal strength is strong, the target power supply voltage VCC input to the power amplifier 40 can be slightly reduced, which can reduce the saturation power of the power amplifier 40 and thus reduce the power consumption of the radio frequency system 100.

[0059] In this embodiment, the power amplifier 40's transmission operating modes include multiple different power modes, such as high power mode (HPM), middle power mode (MPM), and low power mode (LPM). In other embodiments, the power amplifier 40's transmission operating modes include any two of the following: high power mode (HPM), middle power mode (MPM), and low power mode (LPM). In other embodiments, the power amplifier 40's transmission operating modes include ultra-high power mode, high power mode (HPM), middle power mode (MPM), and low power mode (LPM).

[0060] At relatively long distances (e.g., 30-50 meters), in far-field or weak-field conditions (indoors with multiple walls in between), the power amplifier 40 can switch to a high-power mode. For example, the power amplifier 40 can output 28dBm (but is not limited to this data), ensuring that the signal strength is at the preset level and the internet data download speed is greater than the preset download speed, thus meeting user needs.

[0061] At relatively medium distances (e.g., 10–30 meters) or medium distances (indoors, separated by a wall, etc.), the power amplifier 40 can switch to a medium power mode. For example, the output power of the power amplifier 40 is 17 dBm (but not limited to this data), which can ensure that the signal strength is at the preset strength and the internet data download speed is greater than the preset download speed, meeting the user's needs.

[0062] At relatively close range (e.g., 0-10 meters) or in the near field (without walls), the power amplifier 40 can switch to a low-power mode. For example, the power amplifier 40 can output 10dBm (but is not limited to this data) to ensure that the signal strength is at the preset level and the internet data download speed is greater than the preset download speed, thus meeting the user's needs.

[0063] Please see Figure 4 , Figure 4This is a partial architectural diagram of a power amplifier 40 provided in an embodiment of this application. The power amplifier 40 includes at least one amplification module 41. Optionally, the power amplifier 40 includes multiple amplification modules 41 and a third switching unit 42. The control terminal of the third switching unit 42 is electrically connected to the radio frequency chip 20. The third switching unit 42 is electrically connected to the multiple amplification modules 41 and is used to control one amplification module 41 or two or more amplification modules 41 to operate simultaneously, so as to achieve different output powers of the power amplifier 40. For example, when the third switching unit 42 controls one amplification module 41 to operate under the control of the radio frequency chip 20, the power amplifier 40 operates in a low-power mode. When the third switching unit 42 controls two amplification modules 41 to operate under the control of the radio frequency chip 20, the power amplifier 40 operates in a medium-power mode. When the third switching unit 42 controls three amplification modules 41 to operate under the control of the radio frequency chip 20, the power amplifier 40 operates in a high-power mode.

[0064] By designing the power amplifier 40 to have different operating modes, the power amplifier 40 can be switched to the corresponding operating mode under different distance scenarios or different signal strength scenarios, so as to have better signal strength at relatively long distances, far fields or weak fields, and also to have better signal strength at medium distances or mid-fields, short distances or near fields while reducing the power consumption of the RF system 100.

[0065] The following uses one topology of power amplifier 40 as an example to illustrate the relationship between the supply voltage and power consumption of power amplifier 40. The power amplifier 40 provided in this application includes, but is not limited to, the topology of this embodiment.

[0066] Please see Figure 5 , Figure 5 This is a circuit topology diagram of the power amplifier 40 provided in an embodiment of this application. The power amplifier 40 includes a transistor M1, an RF choke circuit 412, and an input / output matching circuit 413.

[0067] Among them, the radio frequency choke circuit 412 is used to suppress the intrusion of the AC component in the power supply module 10 and is equivalent to a DC current source. The input-output matching circuit 413 includes a DC blocking capacitor to limit the inflow of DC components into the load. The transistor M1 (BJT or MOSFET) is used to amplify the signal power. According to the working principle of the transistor M1, taking the MOSFET as an example, applying different voltages to the three terminals of the transistor M1 can make it work in different regions. For example, when Vgs < Vth, the transistor M1 works in the cut-off region, and at this time the transistor M1 is not conducting, which is equivalent to an open switch; when Vgs > Vth and Vds < Vgs - Vgs(th), the transistor M1 works in the triode region (ohmic region), and at this time the channel of the MOSFET is conducting, which is equivalent to a closed switch; when Vgs > Vth and Vds > Vgs - Vgs(th), the transistor M1 works in the linear region (saturation region), and at this time the conducting channel begins to pinch off, and the drain current is only related to Vgs. The transistor M1 can be used as an amplifier to realize the power amplification of the radio frequency signal.

[0068] The same R can be calculated through formula (1) OPT In the case of sat P is proportional to VCC:

[0069]

[0070] Among them, VCC is the supply voltage of the power amplifier 40 (i.e., the target power supply voltage VCC); Psat is the saturation power of the power amplifier 40; R opt is the optimal load of the power amplifier 40.

[0071] It can be seen from formula (1) that increasing the VCC voltage can increase Psat and correspondingly increase the output power of the power amplifier 40; similarly, reducing the supply voltage (i.e., the target power supply voltage) VCC of the power amplifier 40 can reduce the saturation power Psat of the power amplifier 40.

[0072] Therefore, when the radio frequency chip 20 works in the high power mode, the VCC can be increased to make the power amplifier 40 output a higher power. When the radio frequency chip 20 works in the medium power mode or the low power mode, the saturation power Psat of the power amplifier 40 can be reduced by reducing VCC.

[0073] If the power amplifier 40 works in the linear region, the static current is I CQ , and the power consumption at this time is calculated by the following formula:

[0074] P dis = VCC * I CQ (2)

[0075] It can be seen that under the same quiescent current, the power consumption P dis The power consumption is directly proportional to the voltage VCC; reducing the voltage reduces power consumption. Therefore, when the power amplifier 40 operates in medium-power or low-power mode, correspondingly reducing the supply voltage (i.e., the target supply voltage) VCC of the power amplifier 40 can reduce the amplifier's saturation power Psat, thereby reducing the power consumption of the power amplifier 40. Generally, under the same semiconductor process conditions, the lower the saturation power, the smaller the quiescent current of the power amplifier 40, further reducing power consumption.

[0076] Based on proportional calculations, if the supply voltage (i.e., target power supply voltage) VCC of power amplifier 40 is reduced from 3.8V to 3.2V, the power consumption can theoretically be reduced by 15.7%. If the supply voltage (i.e., target power supply voltage) VCC of power amplifier 40 is reduced from 3.8V to 2V, the power consumption can theoretically be reduced by 47.4%. Therefore, the RF system 100 provided in this application can significantly reduce the power consumption of power amplifier 40 by designing a lower supply voltage for power amplifier 40.

[0077] If the supply voltage (i.e., the target power supply voltage) VCC of the power amplifier 40 is increased, according to formula (1), the output power of the power amplifier 40 can also be increased, thus expanding the communication range. Through actual measurement and analysis, it is found that if the supply voltage (i.e., the target power supply voltage VCC) of the power amplifier 40 is increased to 4.2V, the communication range can be doubled.

[0078] Optionally, when the signal strength of the radio frequency signal received by the radio frequency chip 20 is a first signal strength, the voltage conversion circuit 30 outputs a first target power supply voltage VCC1.

[0079] When the signal strength of the radio frequency signal received by the radio frequency chip 20 is the second signal strength, the voltage conversion circuit 30 outputs a second target power supply voltage VCC2. The first signal strength is less than the second signal strength. The first target power supply voltage VCC1 is greater than the second target power supply voltage VCC2.

[0080] In other words, the stronger the received signal strength of the radio frequency signal received by the radio frequency chip 20, the smaller the target power supply voltage VCC output by the voltage conversion circuit 30, and the lower the saturation power of the power amplifier 40 can be. The lower the saturation power, the smaller the quiescent current of the power amplifier 40, which further reduces power consumption.

[0081] Optionally, in near-field and mid-field conditions, the received signal strength of the radio frequency signal received by the radio frequency chip 20 is relatively strong, and the target power supply voltage VCC output by the voltage conversion circuit 30 can be less than the initial power supply voltage Vin, so as to reduce the saturation power and power consumption of the power amplifier 40.

[0082] Optionally, the target power supply voltage VCC output by the voltage conversion circuit 30 can change continuously with the change in the received signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20, that is, the target power supply voltage VCC output by the voltage conversion circuit 30 is continuously adjustable. This embodiment can further save power consumption.

[0083] Optionally, the target power supply voltage VCC output by the voltage conversion circuit 30 is divided into multiple levels according to the change in the received signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20, that is, the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in multiple levels. This embodiment has lower requirements for hardware and software design, which can save costs; fewer external components can reduce the space occupied.

[0084] When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is within a first strength range, the voltage conversion circuit 30 outputs a first target power supply voltage VCC1. When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is within a second strength range, the voltage conversion circuit 30 outputs a second target power supply voltage VCC2. The minimum value of the second strength range is greater than the maximum value of the first strength range. The first target power supply voltage VCC1 is greater than the second target power supply voltage VCC2.

[0085] Optionally, the first strength range and the second strength range can be continuous or discontinuous.

[0086] In this embodiment, the target power supply voltage VCC output by the voltage conversion circuit 30 is divided into two levels depending on the range of the received Wi-Fi radio frequency signal strength received by the radio frequency chip 20. That is, the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in two levels, for example, 3.8V and 3.2V. In other embodiments, the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in two levels, for example, 3.8V and 2V.

[0087] Optional, please refer to Figure 4 The power amplifier 40 includes a first amplification module 421, a second amplification module 422, and a third switching unit 42. The connection terminal of the third switching unit 42 is electrically connected to at least one of the first amplification module 421 and the second amplification module 422.

[0088] The RF chip 20 is electrically connected to the control terminal of the third switching unit 42. The RF chip 20 is connected to the control terminal of the third switching unit 42 via an electrical connection line. The RF chip 20 is used to generate a target mode indication signal based on the signal strength of the received Wi-Fi RF signal and send the target mode indication signal to the control terminal of the third switching unit 42 to control the third switching unit 42 to operate the first amplification module 421, the second amplification module 422, or both simultaneously. Optionally, when the first amplification module 421 is operating, the power amplifier 40 operates in low-power mode. Optionally, when the first amplification module 421 and the second amplification module 422 operate simultaneously, the power amplifier 40 operates in medium-power mode. The output power in medium-power mode is greater than the output power in low-power mode.

[0089] When the power amplifier 40 receives the first target power supply voltage VCC1 from the voltage conversion circuit 30, the first amplification module 421 amplifies the power of the Wi-Fi radio frequency signal to the first target power. Optionally, the first target power is the output power of the power amplifier 40 in low-power mode, indicating that the power amplifier 40 is operating in low-power mode at this time.

[0090] When the power amplifier 40 receives the second target power supply voltage VCC2 from the voltage conversion circuit 30, the first amplification module 421 and the second amplification module 422 amplify the power of the Wi-Fi radio frequency signal to the second target power. The second target power is greater than the first target power. Optionally, the second target power is the output power of the power amplifier 40 in medium power mode, indicating that the power amplifier 40 is operating in medium power mode at this time.

[0091] At relatively long distances (e.g., 30-50 meters), in far-field or weak-field conditions (indoors with multiple walls in between), the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a first strength range (e.g., -80 to -90 dBm), and the voltage conversion circuit 30 outputs a first target power supply voltage VCC1 (e.g., 3.8V). The power amplifier 40's transmission operating mode can be switched to a high-power mode. For example, the output power of the power amplifier 40 is the first target power (e.g., 28 dBm), ensuring that the signal strength is at a preset level and the internet data download speed is greater than the preset download speed, meeting user needs.

[0092] At a relatively medium distance (e.g., 10-30 meters) or in a medium distance (indoors, separated by a wall, etc.), the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a second strength range (-50 to -80 dBm), and the voltage conversion circuit 30 outputs a second target power supply voltage VCC2 (e.g., 3.2V). The transmission operating mode of the power amplifier 40 can be switched to a medium power mode. For example, the output power of the power amplifier 40 is 17 dBm (but not limited to this data), which can ensure that the signal strength is at a preset strength and the internet data download speed is greater than the preset download speed, meeting the user's needs.

[0093] Optionally, the target power supply voltage VCC output by the voltage conversion circuit 30 is divided into three levels according to the range of the received signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20. That is, the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in three levels, such as 3.8V, 3.2V, and 2V.

[0094] When the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a first strength range, the voltage conversion circuit 30 outputs a first target power supply voltage VCC1. When the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a second strength range, the voltage conversion circuit 30 outputs a second target power supply voltage VCC2. When the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a third strength range, the voltage conversion circuit 30 outputs a third target power supply voltage VCC3. The minimum value of the second strength range is greater than the maximum value of the first strength range. The first target power supply voltage VCC1 is greater than the second target power supply voltage VCC2. The minimum value of the third strength range is greater than the maximum value of the second strength range. The second target power supply voltage VCC2 is greater than the third target power supply voltage VCC3.

[0095] The power amplifier 40 includes a first amplification module 421, a second amplification module 422, a third amplification module (not shown), and a third switching unit 42. The connection terminal of the third switching unit 42 is electrically connected to at least one of the first amplification module 421, the second amplification module 422, and the third amplification module. The power amplifier 40 also includes a third amplification module. The connection terminal of the third switching unit 42 is electrically connected to the third amplification module.

[0096] When the power amplifier 40 receives the second target power supply voltage VCC2 from the voltage conversion circuit 30, the first amplification module 421 and the second amplification module 422 amplify the power of the Wi-Fi radio frequency signal to a second target power. The second target power is greater than the first target power. When the power amplifier 40 receives the third target power supply voltage VCC3, the first amplification module 421, the second amplification module 422, and the third amplification module amplify the power of the Wi-Fi radio frequency signal to a third target power. The third target power is greater than the second target power.

[0097] The RF chip 20 is electrically connected to the control terminal of the third switching unit 42. The RF chip 20 generates a target mode indication signal based on the signal strength of the received Wi-Fi RF signal and sends the target mode indication signal to the control terminal of the third switching unit 42 to control the third switching unit 42 to operate one or more of the first amplification module 421, the second amplification module 422, and the third amplification module. Optionally, when the first amplification module 421 is operating, the power amplifier 40 operates in low-power mode. Optionally, when the first amplification module 421 and the second amplification module 422 operate simultaneously, the power amplifier 40 operates in medium-power mode. Optionally, when the first amplification module 421, the second amplification module 422, and the third amplification module operate simultaneously, the power amplifier 40 operates in high-power mode.

[0098] Please see Figure 6 , Figure 6 This is a schematic diagram illustrating that the power amplifier 40 provided in this embodiment has three power supply voltage levels. At relatively long distances (e.g., 30-50 meters), in far-field or weak-field conditions (indoors with multiple walls in between), when the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a first strength range (e.g., -80 to -90 dBm), the voltage conversion circuit 30 outputs a first target power supply voltage VCC1 (e.g., 3.8V). The power amplifier 40's transmission operating mode can be switched to a high-power mode. For example, when the output power of the power amplifier 40 is the first target power (e.g., 28 dBm), it ensures that the signal strength is at a preset level, and the internet data download speed is greater than a preset download speed, meeting user needs.

[0099] At a relatively medium distance (e.g., 10-30 meters) or in a medium distance (indoors, separated by a wall, etc.), the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a second strength range (-50 to -80 dBm), and the voltage conversion circuit 30 outputs a second target power supply voltage VCC2 (e.g., 3.2V). The transmission operating mode of the power amplifier 40 can be switched to a medium power mode. For example, the output power of the power amplifier 40 is 17 dBm (but not limited to this data), which can ensure that the signal strength is at a preset strength and the internet data download speed is greater than the preset download speed, meeting the user's needs.

[0100] At relatively close range (e.g., 0-10 meters) or in the near field (without walls), the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within the third strength range (-30 to -50 dBm), and the voltage conversion circuit 30 outputs a third target power supply voltage VCC3 (e.g., 2V). The transmission operating mode of the power amplifier 40 can be switched to a low-power mode. For example, the output power of the power amplifier 40 is a second target power (e.g., 10 dBm), which ensures that the signal strength is at a preset strength, and the internet data download speed is greater than the preset download speed, meeting user needs.

[0101] Optional, please refer to Figure 7 , Figure 7 This is another partial architecture diagram of the radio frequency system 100 provided in this application embodiment. The number of power amplifiers 40 is plurality of them. The plurality of power amplifiers 40 includes at least one first power amplifier 431 and at least one second power amplifier 432. The first power amplifier 431 is configured to amplify Wi-Fi 2.4G radio frequency signals. The second power amplifier 432 is configured to amplify Wi-Fi 5G and / or Wi-Fi 6G radio frequency signals.

[0102] Please see Figure 7 The radio frequency system 100 also includes a plurality of front-end transceiver circuits 51. Each of the front-end transceiver circuits 51 is electrically connected to one of the power amplifiers 40.

[0103] For example, there are two second power amplifiers 432 and two first power amplifiers 431, and each power amplifier 40 is electrically connected to a front-end transceiver circuit 51. The front-end transceiver circuit 51 includes, but is not limited to, filters, power dividers, antenna switches, low-loss amplifiers, etc.

[0104] This implementation supports Wi-Fi 2.4G standalone working scenario, Wi-Fi 5G standalone working scenario, Wi-Fi 2.4G and Wi-Fi 5G working simultaneously scenario, Wi-Fi 2.4G 2*2 MIMO working scenario, and Wi-Fi 5G 2*2 MIMO working scenario.

[0105] Please see Figure 7 The electronic device 1000 includes the radio frequency system 100. The electronic device 1000 also includes a plurality of antenna radiators 61. Each of the antenna radiators 61 is connected to at least one of the power amplifiers 40.

[0106] The radio frequency (RF) chip 20 includes an RFIC (RF transceiver chip) and a modem (modem chip), and is used for transmitting, receiving, modulating, and demodulating Wi-Fi RF signals. The RF system 100 also includes multiple RF front-end transceiver modules. For example, it includes two Wi-Fi 2.4G RF front-end transceiver modules and two Wi-Fi 5G / 6G RF front-end transceiver modules. The Wi-Fi 2.4G RF front-end transceiver module includes a first power amplifier 431 and a front-end transceiver circuit 51, which includes a low-noise amplifier, switches, couplers, and other devices. The Wi-Fi 5G / 6G RF front-end transceiver module includes a second power amplifier 432 and a front-end transceiver circuit 51, which includes a low-noise amplifier, switches, couplers, and other devices.

[0107] The power amplifier 40 in the four RF front-end transceiver modules is powered by the power module 10. Optionally, the power module 10 may have a dual-cell 8V battery that is half-voltage processed before output.

[0108] The specific signal flow of the radio frequency system 100 is as follows:

[0109] During transmission, the Wi-Fi radio frequency signal from the RF chip 20 enters the TX (transmit) path. Simultaneously, the RF chip 20 controls the power amplifier 40 to operate in different power modes based on the signal strength indication signal. A mode indication signal is input to the power amplifier 40 via its general-purpose input / output (GPIO) interface to indicate whether the power amplifier 40 is operating in high-power, medium-power, or low-power mode. The first to fourth mode indication signals received by the four power amplifiers 40 are GPIO_20, GPIO_21, GPIO_50, and GPIO_51, respectively.

[0110] The specific process is as follows:

[0111] When operating in the far field, the Wi-Fi radio frequency signal from the RF chip 20 enters the TX (transmit) path. According to the signal strength indication (first strength signal), the voltage conversion circuit 30 is controlled to output the first target power supply voltage VCC1. The RF chip 20 outputs (1, 1) (first mode indication signal) to the power amplifier 40 through the GPIO interface, so that the power amplifier 40 operates in high power mode. At this time, the power amplifier 40 transmits at a higher power. The Wi-Fi radio frequency signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit to the antenna port for output.

[0112] During mid-range operation, the Wi-Fi radio frequency signal from the RF chip 20 enters the TX (transmit) path. Based on the signal strength indication (second strength signal), the voltage conversion circuit 30 is controlled to output the second target power supply voltage VCC2. The RF chip 20 outputs (0, 1) through the GPIO interface to enable the power amplifier 40 to operate in medium power mode. At this time, the power amplifier 40 transmits at medium power. The Wi-Fi radio frequency signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit to the antenna port for output.

[0113] When operating in the near field, the Wi-Fi radio frequency signal from the RF chip 20 enters the TX (transmit) path. According to the signal strength indicator (third strength signal), the voltage conversion circuit 30 is controlled to output the third target power supply voltage VCC3. The RF chip 20 outputs (0,0) through the GPIO interface to make the power amplifier 40 work in low power mode. At this time, the power amplifier 40 transmits at low power. The Wi-Fi radio frequency signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit to the antenna port for output.

[0114] Optionally, when the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a third strength range, the voltage conversion circuit 30 outputs a third target power supply voltage VCC3. The minimum value of the third strength range is greater than the maximum value of the second strength range. The second target power supply voltage VCC2 is greater than the third target power supply voltage VCC3. When the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a fourth strength range, the voltage conversion circuit 30 outputs a fourth target power supply voltage VCC4. The maximum value of the fourth strength range is less than the minimum value of the first strength range. The fourth target power supply voltage VCC4 is greater than the first target power supply voltage VCC1.

[0115] By adding a voltage conversion circuit 30, the high voltage (8V) of the dual-cell battery is reduced. When the power amplifier 40 operates in different power modes, the RF chip 20 controls the voltage conversion circuit 30 to output four different voltage levels, such as 4.2V, 3.8V, 3.2V, and 2V, through the control terminal of the switching unit on the voltage conversion circuit 30, thereby achieving high power output or low power transmission.

[0116] The system workflow is as follows:

[0117] When operating in a weak field, the RF chip 20 outputs a fourth mode indication signal (e.g., 1, 1) through the GPIO interface, causing the power amplifier 40 to operate in ultra-high power mode. At the same time, the GPIO_SW interface outputs a fourth voltage conversion signal (e.g., 1, 1), causing the voltage conversion circuit 30 to output the fourth target power supply voltage VCC4 (e.g., 4.2V). At this time, the system enters the wall-penetrating mode, and the power amplifier 40 transmits at high power. The Wi-Fi RF signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit to the antenna port for output.

[0118] When operating in the far field, the RF chip 20 outputs a first mode indication signal (e.g., 1, 0) through the GPIO interface, causing the power amplifier 40 to operate in high power mode. At the same time, the GPIO_SW interface outputs a first voltage conversion signal (e.g., 1, 0), causing the voltage conversion circuit 30 to output a first target power supply voltage VCC1 (e.g., 3.8V). The power amplifier 40 transmits at a higher power, and the Wi-Fi RF signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit to be output to the antenna port.

[0119] During mid-range operation, the RF chip 20 outputs a second mode indication signal (e.g., 0, 1) through the GPIO interface, causing the power amplifier 40 to operate in medium-power mode. At the same time, the GPIO_SW interface outputs a second voltage conversion signal (e.g., 0, 1), causing the voltage conversion circuit 30 to output a second target power supply voltage VCC2 (e.g., 3.2V). At this time, the power amplifier 40 transmits at medium power, and the Wi-Fi RF signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit to be output to the antenna port.

[0120] When operating in the near field, the RF chip 20 outputs a third mode indication signal (e.g., 0, 0) through the GPIO interface, causing the power amplifier 40 to operate in low power mode. At the same time, the GPIO_SW interface outputs a third voltage conversion signal (e.g., 0, 0), causing the voltage conversion circuit 30 to output a third target power supply voltage VCC3 (e.g., 2V). At this time, the power amplifier 40 transmits at low power, and the Wi-Fi RF signal from the RF chip 20 is output to the antenna port through the power amplifier 40 and the filter circuit.

[0121] The specific structure of the voltage conversion circuit 30 is illustrated below with reference to the accompanying drawings.

[0122] Optional, please refer to Figure 8 , Figure 8 This is a schematic diagram of a first structure of the voltage conversion circuit 30 provided in this application embodiment. The voltage conversion circuit 30 includes at least one first switching unit 31 and at least one first voltage divider element 32. One end of the at least one first voltage divider element 32 is electrically connected to the power module 10. The other end of the first voltage divider element 32 is grounded; or, at least one first voltage divider element 32 is electrically connected between the power module 10 and the voltage conversion circuit 30. The radio frequency chip 20 is electrically connected to the control terminal of at least one first switching unit 31. The two ends of the at least one first switching unit 31 are respectively electrically connected to the two ends of at least one first voltage divider element 32.

[0123] This embodiment does not specifically limit the number of the first switching unit 31 or the number of the first voltage divider element 32.

[0124] Optionally, the first voltage divider element 32 and the first switching unit 31 can be connected in series or in parallel. In this embodiment, the first voltage divider element 32 and the first switching unit 31 are connected in parallel.

[0125] The first switching unit 31 is configured to be in the ON state. At this time, the first voltage divider element 32 is short-circuited, and the voltage conversion circuit 30 outputs the first target power supply voltage VCC1.

[0126] The first switching unit 31 is configured to be in the off state. At this time, the first voltage divider element 32 performs voltage division, and the voltage conversion circuit 30 outputs the second target power supply voltage VCC2.

[0127] Further optional information can be found in [link to relevant documentation]. Figure 9 , Figure 9This is a schematic diagram of a second structure of the voltage conversion circuit 30 provided in this application embodiment. The voltage conversion circuit 30 further includes at least one second switching unit 33 and at least one second voltage divider element 34. One end of the at least one second voltage divider element 34 is electrically connected to the power module 10. The other end of the second voltage divider element 34 is grounded; or, at least one second voltage divider element 34 is electrically connected between the power module 10 and the voltage conversion circuit 30. The radio frequency chip 20 is electrically connected to the control terminal of at least one second switching unit 33. The two ends of the at least one second switching unit 33 are respectively electrically connected to the two ends of the at least one second voltage divider element 34. The voltage conversion circuit 30 is configured to output a third target power supply voltage VCC3 or a fourth target power supply voltage VCC4 under the control of the first switching unit 31 and the second switching unit 33.

[0128] This embodiment does not specifically limit the number of the first switching unit 31 or the number of the first voltage divider element 32. This embodiment also does not specifically limit the number of the second switching unit 33 or the number of the second voltage divider element 34.

[0129] Optionally, the first voltage divider element 32 and the second voltage divider element 34 can be connected in series or in parallel. In this embodiment, the first voltage divider element 32 and the second voltage divider element 34 are connected in series.

[0130] Optionally, the first voltage divider element 32 and the first switching unit 31 can be connected in series or in parallel. In this embodiment, the first voltage divider element 32 and the first switching unit 31 are connected in parallel.

[0131] Optionally, the second voltage divider element 34 and the second switching unit 33 can be connected in series or in parallel. In this embodiment, the second voltage divider element 34 and the second switching unit 33 are connected in parallel.

[0132] Optionally, the first voltage divider element 32 and the second voltage divider element 34 may include, but are not limited to, voltage divider resistors.

[0133] Optionally, the first voltage divider element 32 and the second voltage divider element 34 are connected in parallel or in series with the power amplifier circuit. In this embodiment, the first voltage divider element 32 and the second voltage divider element 34 are connected in series with the power amplifier circuit.

[0134] The second switching unit 33 is configured to be in the off state. The first switching unit 31 is configured to be in the on state, the second voltage divider element 34 divides the voltage, and the voltage conversion circuit 30 outputs the third target power supply voltage VCC3.

[0135] The second switching unit 33 is configured to be in the off state. The first switching unit 31 is configured to be in the off state, the first voltage divider element 32 divides the voltage, the second voltage divider element 34 divides the voltage, and the voltage conversion circuit 30 outputs the fourth target power supply voltage VCC4. In this embodiment, the fourth target power supply voltage VCC4 can be a voltage under a stronger field, such as 1.8V. In other embodiments, for example, the first voltage divider element 32 and the second voltage divider element 34 are connected in parallel, the first switching unit 31 and the first voltage divider element 32 are connected in series, and the second switching unit 33 and the second voltage divider element 34 are connected in series. At the same time, the first switching unit 31 and the second switching unit 33 are turned on, so that the total resistance of the first voltage divider element 32 and the second voltage divider element 34 is minimized. At this time, the voltage conversion circuit 30 outputs the fourth target power supply voltage VCC4, for example, 4.2V.

[0136] Optional, please refer to Figure 10 , Figure 10 This is a schematic diagram of a third structure of the voltage conversion circuit 30 provided in this application embodiment. The voltage conversion circuit 30 includes a voltage regulator circuit 35. The voltage regulator circuit 35 is electrically connected between the first voltage divider element 32 and the power supply module 10. This embodiment, by setting the voltage regulator circuit 35, ensures that the output voltage of the voltage conversion circuit 30 does not change with the load size, thus making the target power supply voltage VCC relatively stable.

[0137] Optionally, the first voltage divider element 32 and the second voltage divider element 34 are connected in series and in parallel with the power amplifier 40. The voltage conversion circuit 30 also includes a first voltage divider resistor and a second voltage divider resistor. The second voltage divider resistor includes the aforementioned first voltage divider element 32 and second voltage divider element 34 connected in series.

[0138] Optional, please refer to Figure 10 The voltage regulator circuit 35 includes a reference voltage source 351, a differential voltage amplifier circuit 352, and a switching transistor 353. The first terminal of the switching transistor 353 is electrically connected to the power module 10. The second terminal of the switching transistor 353 is electrically connected to one end of the first voltage divider resistor R1 and the power amplifier 40. The reference voltage source 351 is used to provide a reference voltage.

[0139] The other end of the first voltage divider resistor R1 is electrically connected to one end of the second voltage divider resistor and the first input terminal of the differential voltage amplifier circuit 352. The other end of the second voltage divider resistor R2 is grounded. The second input terminal of the differential voltage amplifier circuit 352 is electrically connected to the reference voltage source 351. The output terminal of the differential voltage amplifier circuit 352 is electrically connected to the control terminal of the switching transistor 353.

[0140] The output voltage (target power supply voltage VCC) of the voltage conversion circuit 30 is: VCC = Vref * (1 + R1 / R2), where Vref is the reference voltage. R1 is the first voltage divider resistor, and R2 is the second voltage divider resistor.

[0141] In this embodiment, the size of the second voltage divider resistor R2 can be changed by the first switching unit 31 and the second switching unit 33, thereby changing the output voltage of the voltage conversion circuit 30.

[0142] The sampled value at the first input terminal of the differential voltage amplifier circuit 352 is compared with the reference voltage. The difference between the two, after passing through the differential voltage amplifier circuit 352, controls the change in Vgs of the switching transistor 353, thereby changing the internal resistance of the switching transistor 353 and increasing / decreasing the voltage drop across the switching transistor 353, thus maintaining the stability of the input voltage (target power supply voltage VCC) of the power amplifier 40. When the target power supply voltage VCC is greater than the set value, the feedback loop controls the internal resistance (Rmos) of the switching transistor 353 to increase, increasing the voltage division of the switching transistor 353, and thus decreasing the target power supply voltage VCC. The same applies when the target power supply voltage VCC is lower than the set value.

[0143] Alternatively, please refer to Figure 11 , Figure 11 This is a schematic diagram of the fourth structure of the voltage conversion circuit 30 provided in the embodiments of this application. The voltage conversion circuit 30 includes a reference voltage source 351, a differential voltage amplifier circuit 352, a switching transistor 353, a first voltage divider resistor R1, and a second voltage divider resistor R2. The first connection terminal of the switching transistor 353 is electrically connected to the power module 10. The second connection terminal of the switching transistor 353 is electrically connected to one end of the first voltage divider resistor R1 and the power amplifier 40.

[0144] The other end of the first voltage divider resistor R1 is electrically connected to one end of the second voltage divider resistor R2 and the first input terminal of the differential voltage amplifier circuit 352. The other end of the second voltage divider resistor R2 is grounded. The second input terminal of the differential voltage amplifier circuit 352 is electrically connected to the reference voltage source 351. The output terminal of the differential voltage amplifier circuit 352 is electrically connected to the control terminal of the switching transistor 353.

[0145] The output voltage (target power supply voltage VCC) of the voltage conversion circuit 30 is: VCC = Vrefˋ * (1 + R1 / R2), where Vrefˋ is the voltage at the second input terminal of the differential voltage amplifier circuit 352. R1 is the first voltage divider resistor R1, and R2 is the second voltage divider resistor R2.

[0146] This embodiment ensures that the output voltage of the voltage conversion circuit 30 does not change with the load size, thus making the target power supply voltage VCC relatively stable.

[0147] Further, please refer to Figure 11 The voltage conversion circuit 30 further includes at least one first switching unit 31 and at least one first voltage divider element 32. One end of at least one first voltage divider element 32 is electrically connected to the reference voltage source 351. The other end of the first voltage divider element 32 is grounded; or, at least one first voltage divider element 32 is electrically connected between the reference voltage source 351 and the second input terminal of the differential voltage amplifier circuit 352. The radio frequency chip 20 is electrically connected to the control terminal of at least one first switching unit 31. The two ends of at least one first switching unit 31 are respectively electrically connected to the two ends of at least one first voltage divider element 32.

[0148] The first switching unit 31 is configured to be in the ON state, and the voltage conversion circuit 30 is configured to output the first target power supply voltage VCC1 or the second target power supply voltage VCC2 under the control of the first switching unit 31.

[0149] This embodiment can change the voltage magnitude of the second input terminal of the differential voltage amplifier circuit 352 by setting a first switching unit 31 and a first voltage divider element 32 between the reference voltage source 351 and the second input terminal of the differential voltage amplifier circuit 352, thereby changing the output voltage of the voltage conversion circuit 30.

[0150] This embodiment can refer to the aforementioned embodiment in which the output voltage of the voltage conversion circuit 30 is changed by setting the first switching unit 31 and the first voltage divider element 32 to change the resistance value of the second voltage divider resistor R2.

[0151] Further, please refer to Figure 12 , Figure 12 This is a fifth structural schematic diagram of the voltage conversion circuit 30 provided in this application embodiment. In this embodiment, a second switching unit 33 and a second voltage divider element 34 may also be provided between the reference voltage source 351 and the second input terminal of the differential voltage amplifier circuit 352, as detailed in the foregoing design.

[0152] In other embodiments, the number of voltage conversion circuits 30 may be multiple, and each voltage conversion circuit 30 may perform one voltage drop to realize an ultra-low voltage voltage conversion circuit 30.

[0153] For other implementation methods, please refer to Figure 13 , Figure 13This is a sixth structural schematic diagram of the voltage conversion circuit 30 provided in this application embodiment. The voltage conversion circuit 30 can also boost the initial power supply voltage Vin. The voltage conversion circuit 30 is illustrated with reference to the accompanying drawings. The voltage conversion circuit 30 includes a switch S1, an inductor L1, a diode D1, and a capacitor C1. The inductor L1, diode D1, and capacitor C1 are connected in series in the circuit. The two ends of the switch S1 are electrically connected to the node between the inductor L1 and the diode D1 and ground.

[0154] When switch S1 is closed, the initial power supply voltage Vin provided by power module 10 charges inductor L1. When switch S1 is open, the energy in inductor L1 discharges to the load through diode D1 (as shown by the dashed line n1 in the figure). At the same time, the initial power supply voltage Vin provided by power module 10 also discharges to the load through diode D1 (as shown by the dashed line n2 in the figure). The two voltages (inductor L1 + initial power supply voltage Vin) are superimposed on the target power supply voltage VCC output by voltage conversion circuit 30 to achieve voltage boost. The repeated on / off operation of switch S1 allows the output terminal to obtain both a high voltage and maintain a continuous stable current.

[0155] Compared to the traditional power amplifier 40 architecture, the RF system 100 provided in this application achieves high power output and increases communication coverage. Furthermore, in low-to-medium power scenarios, by configuring different voltages for the power amplifier 40, its power consumption is reduced. Calculations show that in low-power mode, using a 2V power supply, the power consumption of a single transmitter can be reduced by up to 47%. In near-field P2P scenarios, a mobile phone containing four power amplifiers 40, if all four channels are enabled, considering ICQ = 80mA and a 90% duty cycle, can reduce power consumption by 0.5W. These benefits can effectively improve the terminal's battery life and performance.

[0156] This application proposes a high-performance Wi-Fi circuit scheme that changes the traditional power supply architecture of mobile phone Wi-Fi. By adding a voltage conversion circuit 30, the voltage of a dual or single-cell battery is converted into different voltage levels for output. The system configures different voltages to power the power amplifier 40 according to the signal strength. The high voltage is used in far-field or wall-penetrating mode to increase the output power of the power amplifier 40. The medium and low voltages are used in medium-power mode and low-power mode to achieve low power consumption in medium and low power application scenarios. This achieves the high power requirement and low power consumption target of Wi-Fi at a very low cost, which has a significant advantage for creating a high-performance Wi-Fi communication experience.

[0157] Please see Figure 14 , Figure 14This is a flowchart of a power amplification method for a radio frequency system 100 provided in an embodiment of this application. This application also provides a power amplification method for a radio frequency system 100. The method is applied to the radio frequency system 100 described in any of the above embodiments. (In conjunction with...) Figures 1 to 13 The radio frequency system 100 includes a power supply module 10, a radio frequency chip 20, a voltage conversion circuit 30, and a power amplifier 40. The voltage conversion circuit 30 is electrically connected to the power supply module 10 and the radio frequency chip 20. Specifically, the voltage conversion circuit 30 is electrically connected to the power supply module 10 and the radio frequency chip 20 via electrical connection lines. The power amplifier 40 is electrically connected to the radio frequency chip 20 and the voltage conversion circuit 30.

[0158] The method includes, but is not limited to, the following steps.

[0159] Step S100: Determine the target power supply voltage VCC of the power amplifier 40 based on the signal strength of the received Wi-Fi radio frequency signal.

[0160] The voltage conversion circuit 30 is configured to receive the initial power supply voltage Vin from the power module 10 and output a target power supply voltage VCC to the power amplifier 40. In other words, the voltage conversion circuit 30 converts the initial power supply voltage Vin into the target power supply voltage VCC under the control of the RF chip 20. The control signal from the RF chip 20 affects the magnitude of the target power supply voltage VCC. Optionally, the target power supply voltage VCC can be the same as the initial power supply voltage Vin, or the target power supply voltage VCC can be greater than the initial power supply voltage Vin, i.e., the voltage conversion circuit 30 has a boost function; or the target power supply voltage VCC can be less than the initial power supply voltage Vin, i.e., the voltage conversion circuit 30 has a buck function. In other words, the voltage conversion circuit 30 enables adjustable output voltage from the power module 10, which in turn enables adjustable supply voltage to the power amplifier 40.

[0161] The target power supply voltage VCC is related to the received signal strength (RSSI) of the RF chip 20. Optionally, the larger the Wi-Fi RF signal strength received by the RF chip 20, the smaller the target power supply voltage VCC. Alternatively, the smaller the Wi-Fi RF signal strength received by the RF chip 20, the larger the target power supply voltage VCC.

[0162] Step S200: Amplify the power of the Wi-Fi radio frequency signal to be transmitted to the target power according to the target power supply voltage VCC.

[0163] The power amplifier 40 is configured to receive the target power supply voltage VCC from the voltage conversion circuit 30 and the Wi-Fi radio frequency signal from the radio frequency chip 20, and amplify the power of the Wi-Fi radio frequency signal to the target power.

[0164] The target power is related to the target power supply voltage VCC. Optionally, the target power increases as the target power supply voltage VCC increases, and decreases as the target power supply voltage VCC decreases.

[0165] Thus, when the target power supply voltage VCC is greater than the initial power supply voltage Vin, the output power of the power amplifier 40 can be further increased to meet the needs of more weak field high power scenarios.

[0166] In the near field, the signal strength received by the RF chip 20 is relatively large, and the target power supply voltage VCC is relatively small (e.g., less than the initial power supply voltage Vin), which can also meet the power requirements and signal strength requirements. The power supply voltage of the power amplifier 40 is less than the initial power supply voltage Vin, which reduces the power consumption compared to when the power supply voltage was not adjusted.

[0167] Please see Figure 15 Step S100: Determining the target power supply voltage VCC of the power amplifier 40 based on the signal strength of the received Wi-Fi radio frequency signal includes, but is not limited to, the following steps.

[0168] Step S111: Generate a voltage conversion signal and a mode indication signal based on the signal strength of the received Wi-Fi radio frequency signal.

[0169] Step S112: Generate the target power supply voltage VCC based on the voltage conversion signal.

[0170] In other words, the stronger the Wi-Fi radio frequency signal received by the radio frequency chip 20, the smaller the target power supply voltage VCC output by the voltage conversion circuit 30, and the lower the saturation power of the power amplifier 40 can be. The lower the saturation power, the smaller the quiescent current of the power amplifier 40, which further reduces power consumption.

[0171] Optionally, in near-field and mid-field conditions, the received Wi-Fi radio frequency signal strength of the radio frequency chip 20 is relatively strong, and the target power supply voltage VCC output by the voltage conversion circuit 30 can be less than the initial power supply voltage Vin, so as to reduce the saturation power and power consumption of the power amplifier 40.

[0172] Step S200: Amplify the power of the Wi-Fi radio frequency signal to be transmitted to the target power according to the target power supply voltage VCC, including but not limited to the following steps.

[0173] Step S211: Determine the target power amplification mode based on the target power supply voltage VCC and the mode indication signal. The target power amplification mode is used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to the target power.

[0174] Please see Figure 16 and Figure 17 Step S100: Determining the target power supply voltage VCC of the power amplifier 40 based on the signal strength of the received Wi-Fi radio frequency signal includes, but is not limited to, the following steps.

[0175] Step S121: Generate a first voltage conversion signal and a first mode indication signal based on the received Wi-Fi radio frequency signal strength falling within a first strength range. Generate a first target power supply voltage VCC1 based on the first voltage conversion signal.

[0176] Step S122: Generate a second voltage conversion signal and a second mode indication signal based on the received Wi-Fi radio frequency signal strength falling within a second strength range. Generate a second target power supply voltage VCC2 based on the second voltage conversion signal. The minimum value of the second strength range is greater than the maximum value of the first strength range. The first target power supply voltage VCC1 is greater than the second target power supply voltage VCC2.

[0177] In this embodiment, the target power supply voltage VCC output by the voltage conversion circuit 30 is divided into two levels depending on the range of the received Wi-Fi radio frequency signal strength received by the radio frequency chip 20. That is, the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in two levels, for example, 3.8V and 3.2V. In other embodiments, the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in two levels, for example, 3.8V and 2V.

[0178] Please see Figure 16 and Figure 17 Step S200: Amplify the power of the Wi-Fi radio frequency signal to be transmitted to the target power according to the target power supply voltage VCC, including but not limited to the following steps.

[0179] Step S221: Determine a first power amplification mode based on the first target power supply voltage VCC1 and the first mode indication signal. The first power amplification mode is used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to the first target power.

[0180] Step S222: Determine the second power amplification mode based on the second target power supply voltage VCC2 and the second mode indication signal. The second power amplification mode is used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to the second target power. Wherein, the first target power is greater than the second target power.

[0181] At relatively long distances (e.g., 30-50 meters), in far-field or weak-field conditions (indoors with multiple walls in between), the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a first strength range (e.g., -80 to -90 dBm), and the voltage conversion circuit 30 outputs a first target power supply voltage VCC1 (e.g., 3.8V). The power amplifier 40's transmission operating mode can be switched to a high-power mode. For example, the output power of the power amplifier 40 is the first target power (e.g., 28 dBm), ensuring that the signal strength is at a preset level and the internet data download speed is greater than the preset download speed, meeting user needs.

[0182] At a relatively medium distance (e.g., 10-30 meters) or in a medium distance (indoors, separated by a wall, etc.), the signal strength of the Wi-Fi radio frequency signal received by the RF chip 20 is within a second strength range (-50 to -80 dBm), and the voltage conversion circuit 30 outputs a second target power supply voltage VCC2 (e.g., 3.2V). The transmission operating mode of the power amplifier 40 can be switched to a medium power mode. For example, the output power of the power amplifier 40 is 17 dBm (but not limited to this data), which can ensure that the signal strength is at a preset strength and the internet data download speed is greater than the preset download speed, meeting the user's needs.

[0183] Please see Figure 18 and Figure 18 Step S100: Determining the target power supply voltage VCC of the power amplifier 40 based on the signal strength of the received Wi-Fi radio frequency signal. Also includes:

[0184] Step S123: Generate a third voltage conversion signal and a third mode indication signal based on the received Wi-Fi radio frequency signal strength falling within a third strength range. Generate a third target power supply voltage VCC3 based on the third voltage conversion signal. The minimum value of the third strength range is greater than the maximum value of the second strength range. The second target power supply voltage VCC2 is greater than the third target power supply voltage VCC3.

[0185] Step S200: Amplify the power of the Wi-Fi radio frequency signal to be transmitted to the target power according to the target power supply voltage VCC, including but not limited to the following steps.

[0186] Step S223: Determine the third power amplification mode based on the third target power supply voltage VCC3 and the third mode indication signal. The third power amplification mode is used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to the third target power. The second target power is greater than the third target power.

[0187] Optionally, the target power supply voltage VCC output by the voltage conversion circuit 30 is divided into three levels according to the range of the received signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20. That is, the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in three levels, such as 3.8V, 3.2V, and 2V.

[0188] Building upon the foregoing, this embodiment further adds that when the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is within a third strength range (-30 to -50 dBm) at relatively close distances (e.g., 0 to 10 meters) or in the near field (without walls), the voltage conversion circuit 30 outputs a third target power supply voltage VCC3 (e.g., 2V). The transmission operating mode of the power amplifier 40 can be switched to a low-power mode. For example, the output power of the power amplifier 40 can be set to a second target power (e.g., 10 dBm), ensuring that the signal strength is at a preset level and the internet data download speed is greater than a preset download speed, thus meeting user needs.

[0189] Please see Figure 19 Step S100: Determining the target power supply voltage VCC of the power amplifier 40 based on the signal strength of the received Wi-Fi radio frequency signal. Also includes:

[0190] Step S124: Generate a fourth voltage conversion signal and a fourth mode indication signal based on the received Wi-Fi radio frequency signal strength falling within a fourth intensity range. Generate a fourth target power supply voltage VCC4 based on the fourth voltage conversion signal. The maximum value of the fourth intensity range is less than the minimum value of the first intensity range. The fourth target power supply voltage VCC4 is greater than the first target power supply voltage VCC1.

[0191] Step S200: Amplify the power of the Wi-Fi radio frequency signal to be transmitted to the target power according to the target power supply voltage VCC, including but not limited to the following steps.

[0192] Step S224: Determine the fourth power amplification mode based on the fourth target power supply voltage VCC4 and the fourth mode indication signal. The fourth power amplification mode is used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to the fourth target power. The fourth target power is greater than the first target power.

[0193] By adding a voltage conversion circuit 30, the high voltage (8V) of the dual-cell battery is reduced. When the power amplifier 40 operates in different power modes, the RF chip 20 controls the voltage conversion circuit 30 to output four different voltage levels, such as 4.2V, 3.8V, 3.2V, and 2V, through the control terminal of the switching unit on the voltage conversion circuit 30, thereby achieving high power output or low power transmission.

[0194] Based on the foregoing, this embodiment further adds that when operating in a weak field, the RF chip 20 outputs a fourth mode indication signal (e.g., 1, 1) through the GPIO interface, causing the power amplifier 40 to operate in ultra-high power mode. At the same time, the GPIO_SW interface outputs a fourth voltage conversion signal (e.g., 1, 1), causing the voltage conversion circuit 30 to output a fourth target power supply voltage VCC4 (e.g., 4.2V). At this time, the system enters the wall-penetrating mode, the power amplifier 40 transmits at high power, and the Wi-Fi RF signal from the RF chip 20 is output through the power amplifier 40, the filter circuit, and the antenna port.

[0195] In other embodiments, the method further includes:

[0196] The target power supply voltage VCC is determined based on the target application scenario, wherein the data download speed of the target application scenario is greater than the preset download speed, and the target power supply voltage VCC is greater than the preset voltage.

[0197] Optionally, the target application scenario could be a scenario requiring high data download speeds, such as gaming or video streaming. In this case, the electronic device 1000 identifies the current scenario as the target application scenario. The Wi-Fi radio frequency signal from the RF chip 20 enters the TX (transmit) path. Based on the target application scenario, the control voltage conversion circuit 30 outputs the first target power supply voltage VCC1. The RF chip 20 outputs (1, 1) (first mode indication signal) to the power amplifier 40 through the GPIO interface, causing the power amplifier 40 to operate in high-power mode. At this time, the power amplifier 40 transmits at a higher power. The Wi-Fi radio frequency signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit before being output to the antenna port.

[0198] Alternatively, the RF chip 20 outputs a fourth mode indication signal (e.g., 1, 1) through the GPIO interface, causing the power amplifier 40 to operate in ultra-high power mode. At the same time, the GPIO_SW interface outputs a fourth voltage conversion signal (e.g., 1, 1), causing the voltage conversion circuit 30 to output a fourth target power supply voltage VCC4 (e.g., 4.2V). At this time, the system enters the wall-penetrating mode, and the power amplifier 40 transmits at high power. The Wi-Fi RF signal from the RF chip 20 passes through the power amplifier 40 and the filter circuit to the antenna port for output.

[0199] Furthermore, in other embodiments, determining the target power supply voltage VCC based on the target application scenario also includes:

[0200] If the target application scenario is continuous playback of short videos, the voltage conversion circuit 30 can output the fourth target power supply voltage VCC4 during the first time period, and the power amplifier 40 can operate in ultra-high power mode to buffer the number of unplayed short videos. Then, during the second time period, the voltage conversion circuit 30 can output the third target power supply voltage VCC3, and the power amplifier 40 can operate in low power mode. This avoids prolonged operation in ultra-high power mode, which would result in excessive power consumption.

[0201] Each module in the aforementioned control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0202] Please see Figure 20 This application also provides an electronic device 1000, including a memory 200, a processor 300, and a computer program stored in the memory 200 and executable on the processor 300. When the processor 300 executes the computer program, it implements the steps of the method described in any of the above embodiments.

[0203] The electronic device 1000 can be a terminal. The electronic device 1000 includes a processor 300, a memory 200, an input / output interface, a communication interface, a display unit, and an input device. The processor 300, memory 200, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor 300 of the terminal provides computing and control capabilities. The memory 200 of the terminal includes a non-volatile storage medium and internal memory 200. The non-volatile storage medium stores the operating system and computer programs. The internal memory 200 provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the terminal is used for exchanging information between the processor 300 and external devices. The communication interface of the terminal is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor 300, it implements a control method.

[0204] In one embodiment, a computer storage medium is provided storing an executable program, which, when executed by a processor, performs the steps described in the above method embodiments.

[0205] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments described above. Any references to memory 200, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory 200. Non-volatile memory 200 can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory 200, high-density embedded non-volatile memory 200, resistive random access memory (ReRAM), magnetic resistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory 200, etc. The volatile memory 200 may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application may include at least one of relational databases and non-relational databases. Non-relational databases may include, but are not limited to, blockchain-based distributed databases, etc. The processor 300 involved in the embodiments provided in this application may be a general-purpose processor 300, a central processing unit 300, a graphics processing unit 300, a digital signal processor 300, a programmable logic device, a quantum computing-based data processing logic device, etc., etc., and is not limited to these.

[0206] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A radio frequency system, characterized by The application relates to a power supply module, a radio frequency chip, a voltage conversion circuit and a power amplifier. The power supply module is configured to provide an initial power supply voltage. The voltage conversion circuit is electrically connected to the power supply module and the radio frequency chip, and is configured to receive the initial power supply voltage and output a target power supply voltage related to the signal strength received by the radio frequency chip. The power amplifier is electrically connected to the radio frequency chip and the voltage conversion circuit, and is configured to receive the target power supply voltage and a Wi-Fi radio frequency signal from the radio frequency chip, and amplify the power of the Wi-Fi radio frequency signal to a target power related to the target power supply voltage. When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip is a first signal strength, the voltage conversion circuit outputs a first target power supply voltage; when the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip is a second signal strength, the voltage conversion circuit outputs a second target power supply voltage, the first signal strength is smaller than the second signal strength, and the first target power supply voltage is greater than the second target power supply voltage. When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip is in a first intensity range, the voltage conversion circuit outputs a first target power supply voltage; when the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip is in a second intensity range, the voltage conversion circuit outputs a second target power supply voltage; the minimum value of the second intensity range is greater than the maximum value of the first intensity range, and the first target power supply voltage is greater than the second target power supply voltage.

2. The radio frequency system of claim 1, wherein, When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip is in a third intensity range, the voltage conversion circuit outputs a third target power supply voltage; the minimum value of the third intensity range is greater than the maximum value of the second intensity range, the second target power supply voltage is greater than the third target power supply voltage; or, 3. The radio frequency system of claim 1, wherein, When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip is in a third intensity range, the voltage conversion circuit outputs a third target power supply voltage; the minimum value of the third intensity range is greater than the maximum value of the second intensity range, the second target power supply voltage is greater than the third target power supply voltage; when the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip is in a fourth intensity range, the voltage conversion circuit outputs a fourth target power supply voltage; the maximum value of the fourth intensity range is smaller than the minimum value of the first intensity range, and the fourth target power supply voltage is greater than the first target power supply voltage.

4. The radio frequency system of claim 3, wherein, ​ ​ 5. A radio frequency system as claimed in any one of claims 2 to 4, characterized in that The voltage conversion circuit comprises at least one first switch unit and at least one first voltage dividing element; one end of at least one first voltage dividing element is electrically connected to the power supply module, and the other end of the first voltage dividing element is grounded, or at least one first voltage dividing element is electrically connected between the power supply module and the voltage conversion circuit; the radio frequency chip is electrically connected to the control end of at least one first switch unit, and two ends of at least one first switch unit are respectively electrically connected to two ends of at least one first voltage dividing element. The first switch unit is configured to be in an on state, and the voltage conversion circuit is configured to output the first target power supply voltage or the second target power supply voltage under the control of the first switch unit.

6. The radio frequency system of claim 5, wherein, The voltage conversion circuit further comprises at least one second switch unit and at least one second voltage dividing element; one end of at least one second voltage dividing element is electrically connected to the power supply module, and the other end of the second voltage dividing element is grounded, or at least one second voltage dividing element is electrically connected between the power supply module and the voltage conversion circuit; the radio frequency chip is electrically connected to the control end of at least one second switch unit, and two ends of at least one second switch unit are respectively electrically connected to two ends of at least one second voltage dividing element. The voltage conversion circuit is configured to output a third target power supply voltage or a fourth target power supply voltage under the control of the first switch unit and the second switch unit.

7. The radio frequency system of claim 5, wherein, The voltage conversion circuit comprises a voltage stabilizing circuit, and the voltage stabilizing circuit is electrically connected between the first voltage dividing element and the power supply module.

8. The radio frequency system of any of claims 2 to 4, wherein, The voltage conversion circuit comprises a reference voltage source, a differential voltage amplification circuit, a switch tube, a first voltage dividing resistor and a second voltage dividing resistor; a first connection end of the switch tube is electrically connected to the power supply module, and a second connection end of the switch tube is electrically connected to one end of the first voltage dividing resistor and the power amplifier; The other end of the first voltage dividing resistor is electrically connected to one end of the second voltage dividing resistor and a first input end of the differential voltage amplification circuit, the other end of the second voltage dividing resistor is grounded, a second input end of the differential voltage amplification circuit is electrically connected to the reference voltage source, and an output end of the differential voltage amplification circuit is electrically connected to the control end of the switch tube.

9. The radio frequency system of claim 8, wherein, The voltage conversion circuit further comprises at least one first switch unit and at least one first voltage dividing element; one end of at least one first voltage dividing element is electrically connected to the reference voltage source, and the other end of the first voltage dividing element is grounded, or at least one first voltage dividing element is electrically connected between the reference voltage source and the second input end of the differential voltage amplification circuit; the radio frequency chip is electrically connected to the control end of at least one first switch unit, and two ends of at least one first switch unit are respectively electrically connected to two ends of at least one first voltage dividing element. The first switch unit is configured to be in an on state, and the voltage conversion circuit is configured to output the first target power supply voltage or the second target power supply voltage under the control of the first switch unit.

10. The radio frequency system of any of claims 2 to 4, wherein, The power amplifier comprises a first amplification module, a second amplification module and a third switch unit, a connection end of the third switch unit is electrically connected with at least one of the first amplification module and the second amplification module; the radio frequency chip is electrically connected with a control end of the third switch unit; when the power amplifier receives the first target power supply voltage, the first amplification module amplifies the power of the Wi-Fi radio frequency signal to a first target power; when the power amplifier receives the second target power supply voltage, the first amplification module and the second amplification module amplify the power of the Wi-Fi radio frequency signal to a second target power; the second target power is greater than the first target power.

11. The radio frequency system of claim 10, wherein, The power amplifier further comprises a third amplification module, a connection end of the third switch unit is electrically connected with the third amplification module, when the power amplifier receives a third target power supply voltage, the first amplification module, the second amplification module and the third amplification module amplify the power of the Wi-Fi radio frequency signal to a third target power; the third target power is greater than the second target power.

12. The radio frequency system of claim 10, wherein, The radio frequency chip is a Wi-Fi radio frequency chip, the number of the power amplifiers is multiple, the multiple power amplifiers comprise at least one first power amplifier and at least one second power amplifier, the first power amplifier is configured to amplify a Wi-Fi 2.4G radio frequency signal, and the second power amplifier is configured to amplify a Wi-Fi 5G and / or Wi-Fi 6G radio frequency signal. The radio frequency system further comprises multiple front-end transceiver circuits, and each front-end transceiver circuit is electrically connected with one power amplifier.

13. An electronic device, comprising: The electronic device comprises the radio frequency system according to any one of claims 1 to 12, and further comprises multiple antenna radiators, and each antenna radiator is connected with at least one power amplifier.

14. A method of power amplification for a radio frequency system, the method comprising: The method comprises: determining a target power supply voltage of a power amplifier according to a signal strength of a received Wi-Fi radio frequency signal; amplifying the power of a Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage.

15. The method of claim 14, wherein, The method comprises: generating a voltage conversion signal and a mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal; generating a target power supply voltage according to the voltage conversion signal; amplifying the power of a Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage, comprising: determining a target power amplification mode according to the target power supply voltage and the mode indication signal, the target power amplification mode being used for amplifying the power of a Wi-Fi radio frequency signal to be transmitted to a target power.

16. The method of claim 14, wherein, The method comprises: generating a first voltage conversion signal and a first mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal being located in a first intensity range, and generating a first target power supply voltage according to the first voltage conversion signal; generate a second voltage conversion signal and a second mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal being in a second strength range, generate a second target power supply voltage according to the second voltage conversion signal; a minimum value of the second strength range is greater than a maximum value of the first strength range, and the first target power supply voltage is greater than the second target power supply voltage; amplify the power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage, including: determine a first power amplification mode according to the first target power supply voltage and the first mode indication signal, the first power amplification mode being used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to a first target power; determine a second power amplification mode according to the second target power supply voltage and the second mode indication signal, the second power amplification mode being used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to a second target power; wherein the first target power is greater than the second target power.

17. The method of claim 16, wherein, The method further comprises: generate a third voltage conversion signal and a third mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal being in a third strength range, generate a third target power supply voltage according to the third voltage conversion signal; a minimum value of the third strength range is greater than a maximum value of the second strength range, and the second target power supply voltage is greater than the third target power supply voltage; amplify the power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage, including: determine a third power amplification mode according to the third target power supply voltage and the third mode indication signal, the third power amplification mode being used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to a third target power; the second target power is greater than the third target power.

18. The method of claim 17, wherein, The method further comprises: generate a fourth voltage conversion signal and a fourth mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal being in a fourth strength range, generate a fourth target power supply voltage according to the fourth voltage conversion signal; a maximum value of the fourth strength range is less than a minimum value of the first strength range, and the fourth target power supply voltage is greater than the first target power supply voltage; amplify the power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage, including: determine a fourth power amplification mode according to the fourth target power supply voltage and the fourth mode indication signal, the fourth power amplification mode being used to amplify the power of the Wi-Fi radio frequency signal to be transmitted to a fourth target power; the fourth target power is greater than the first target power.

19. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the steps in the method of any one of claims 14 to 18.

20. A computer storage medium storing an executable program, wherein the computer storage medium comprises: The executable program is executed by the processor to implement the method of any one of claims 14 to 18.

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