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

Abstract

The present application provides a radio frequency system, a power amplification method for 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 to the power supply module and the radio frequency chip, and the voltage conversion circuit 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 strength of a signal received by the radio frequency chip. The power amplifier is electrically connected to the radio frequency chip and the voltage conversion circuit, and the power amplifier is configured to receive the target power supply voltage and a WiFi radio frequency signal from the radio frequency chip, and amplify the power of the WiFi radio frequency signal to target power, the magnitude of the target power being related to the target power supply voltage. When the strength of a received signal is relatively high, the target power supply voltage inputted into the power amplifier can be slightly reduced, reducing the saturation power of the power amplifier, thereby reducing the power consumption of the radio frequency system.

Description

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

[0001] The present application claims priority to the Chinese patent application No. 2024113922453, filed on September 30, 2024, entitled "Radio frequency system, power amplification method of radio frequency system and related product", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a radio frequency system, a power amplification method of the radio frequency system and related products. BACKGROUND

[0003] With the continuous progress of technology, the functions of electronic devices such as smartphones are becoming more and more rich, and users' demand for data transmission speed and network stability is also growing. Taking Wi-Fi communication of electronic devices as an example, high-performance Wi-Fi technology can provide faster data transmission rate and more stable connection to meet users' expectations for smooth online experience.

[0004] High-power Wi-Fi design can significantly improve communication coverage. This means that users can enjoy stable network connection even when they are far away from the router, especially in large residential or office environments. In addition, in weak signal environment, high-power Wi-Fi can improve communication quality, reduce data transmission interruption and delay, and thus provide a more smooth online experience.

[0005] Although high-power Wi-Fi can bring better communication experience, it may also increase the power consumption of the device. Therefore, how to provide a low-power radio frequency system becomes a technical problem to be solved. SUMMARY

[0006] The present application provides a low-power radio frequency system, a power amplification method of the radio frequency system, an electronic device with the radio frequency system, and a computer storage medium.

[0007] In a first aspect, the present application provides a radio frequency system, comprising:

[0008] a power supply module configured to provide an initial power supply voltage;

[0009] a radio frequency chip;

[0010] a voltage conversion circuit, the voltage conversion circuit being electrically connected to the power supply module and the radio frequency chip, the voltage conversion circuit being 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 radio frequency chip;

[0011] a power amplifier electrically connected with the radio frequency chip and the voltage conversion circuit, configured to receive the target power supply voltage and a Wi-Fi radio frequency signal from the radio frequency chip, and amplify power of the Wi-Fi radio frequency signal to a target power, the target power being related to the target power supply voltage.

[0012] In a second aspect, the present application provides an electronic device comprising the radio frequency system as described above, and further comprising a plurality of antenna radiators, each of the antenna radiators being connected with at least one of the power amplifiers.

[0013] In a third aspect, the present application provides a power amplification method of a radio frequency system, comprising:

[0014] determining the target power supply voltage of the power amplifier according to the signal strength of the received Wi-Fi radio frequency signal;

[0015] amplifying power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage.

[0016] In a fourth aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method as described above.

[0017] In a fifth aspect, the present application provides a computer storage medium storing an executable program, wherein the executable program is executed by a processor to implement the method as described above. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows;

[0019] FIG. 1 is a schematic diagram of a fixed envelope of a power supply voltage of a power amplifier;

[0020] FIG. 2 is a schematic diagram of an electronic device provided by the embodiments of the present application;

[0021] FIG. 3 is a partial architecture diagram of a radio frequency system provided by the embodiments of the present application;

[0022] FIG. 4 is a partial architecture diagram of a power amplifier provided by the embodiments of the present application;

[0023] FIG. 5 is a circuit topology diagram of a power amplifier provided by the embodiments of the present application;

[0024] FIG. 6 is a schematic diagram of a power supply voltage of a power amplifier having three gears provided by the embodiments of the present application;

[0025] FIG. 7 is another partial architecture diagram of a radio frequency system according to an embodiment of the present application;

[0026] FIG. 8 is a first structure diagram of a voltage conversion circuit according to an embodiment of the present application;

[0027] FIG. 9 is a second structure diagram of a voltage conversion circuit according to an embodiment of the present application;

[0028] FIG. 10 is a third structure diagram of a voltage conversion circuit according to an embodiment of the present application;

[0029] FIG. 11 is a fourth structure diagram of a voltage conversion circuit according to an embodiment of the present application;

[0030] FIG. 12 is a fifth structure diagram of a voltage conversion circuit according to an embodiment of the present application;

[0031] FIG. 13 is a sixth structure diagram of a voltage conversion circuit according to an embodiment of the present application;

[0032] FIG. 14 is a flow chart of a power amplification method of a radio frequency system according to an embodiment of the present application;

[0033] FIG. 15 is a first implementation flow chart of the power amplification method according to an embodiment of the present application;

[0034] FIG. 16 is a flow chart of generating a first target power supply voltage in the power amplification method according to an embodiment of the present application;

[0035] FIG. 17 is a flow chart of generating a second target power supply voltage in the power amplification method according to an embodiment of the present application;

[0036] FIG. 18 is a flow chart of generating a third target power supply voltage in the power amplification method according to an embodiment of the present application;

[0037] FIG. 19 is a flow chart of generating a fourth target power supply voltage in the power amplification method according to an embodiment of the present application;

[0038] FIG. 20 is a frame diagram of an electronic device according to an embodiment of the present application.

[0039] Part of the figure number explanation:

[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 switch 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 switch unit 31; first voltage dividing element 32; second switch unit 33; second voltage dividing element 34; voltage stabilizing circuit 35; reference voltage source 351; differential amplification circuit 352; switch tube 353; memory 200; processor 300. DETAILED DESCRIPTION

[0041] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the embodiments described in the present application are only part of the embodiments, rather than all the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0042] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0043] The terms "first", "second", and the like in the specification of the present application and the above drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example: an assembly or device including one or more components is not limited to the listed one or more components, but can optionally include one or more components that are not listed but are inherent to the product exemplified, or one or more components that should be included based on the described function.

[0044] The common use scenario of near distance communication (for example, Wi-Fi communication, Bluetooth communication, etc.) is indoors, and the walls and the like in the indoor environment seriously block the signal strength.

[0045] Referring to FIG. 1, FIG. 1 is a schematic diagram of a fixed envelope of a supply voltage of a power amplifier. In order to increase the wall penetration performance of a short-range communication, a supply voltage of a power amplifier in a mobile terminal (a subsequent electronic device) is generally designed to be relatively large and relatively fixed to meet the weak field requirement. On the one hand, the fixed supply voltage of the power amplifier results in that the maximum power amplification capability of the power amplifier cannot be further improved, for example, the maximum output power of the power amplifier is 22dBm and cannot be further improved. However, there is a further high power requirement in the application, which results in the problem that the higher power requirement cannot be met.

[0046] In addition, in a scenario close to a signal transmitting device (i.e., a near field), the output power of the power amplifier does not need to be too large (for example, 10-20dBm) to meet the use. The relatively large supply voltage of the power amplifier causes the problem of large power consumption, resulting in large power loss of the mobile terminal (the subsequent electronic device).

[0047] Referring to FIG. 2, FIG. 2 is a schematic diagram of an electronic device 1000 provided in an embodiment of the present application. The present 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 a mobile phone, a tablet computer, a notebook computer, a computer, a wearable device, a drone, a robot, and the like, which are devices having a communication function. The present application takes the mobile phone as an example for illustration, and other electronic devices can refer to the present embodiment. The circuit structure of the radio frequency system 100 is exemplarily illustrated in combination with the accompanying drawings.

[0048] Referring to FIG. 3, FIG. 3 is a partial architecture diagram of the radio frequency system 100 provided in an embodiment of the present 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] Referring to FIG. 3, the power supply module 10 is configured to provide an initial supply voltage Vin. Optionally, the power supply module 10 includes but is not limited to a battery, a power management chip, and the like. Optionally, the battery includes a single cell, and the initial supply voltage Vin is about 4.2v. Optionally, the battery includes a double cell, and the initial supply voltage Vin of the power supply module 10 is about 4.2v after half voltage processing.

[0050] Referring to FIG. 3, 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 through an electrical connection line.

[0051] Referring to FIG. 3, the voltage conversion circuit 30 is configured to receive the initial power supply voltage Vin from the power supply module 10 and output a target power supply voltage to the power amplifier 40. In other words, the voltage conversion circuit 30 is used to convert the initial power supply voltage Vin into the target power supply voltage under the control of the radio frequency chip 20. The control signal of the radio frequency chip 20 affects the size of the target power supply voltage VCC. Alternatively, 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 realizes the adjustable voltage output by the power supply module 10, i.e. realizes the adjustable supply voltage of the power amplifier 40.

[0052] The target power supply voltage VCC is related to the signal strength (Received Signal Strength Indication, RSSI) received by the radio frequency chip 20. Alternatively, the Wi-Fi radio frequency signal strength received by the radio frequency chip 20 is greater, and the target power supply voltage VCC is smaller. Alternatively, the Wi-Fi radio frequency signal strength received by the radio frequency chip 20 is smaller, and the target power supply voltage VCC is greater.

[0053] Referring to FIG. 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 end and a power supply end. The radio frequency signal input end is electrically connected to the radio frequency chip 20. The power supply end 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 a target power.

[0055] The size of the target power is related to the target power supply voltage VCC. Alternatively, the target power increases as the target power supply voltage VCC increases. The target power decreases as the target power supply voltage VCC decreases.

[0056] In this way, 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 radio frequency chip 20 is large, and the target power supply voltage VCC is small (for example, less than the initial power supply voltage Vin) and can also meet the power demand and meet the signal strength demand, and the power supply voltage of the power amplifier 40 is less than the initial power supply voltage Vin, and the power consumption is reduced compared to when the power supply voltage is not adjusted.

[0058] The application provides a radio frequency system 100, which comprises a power supply module 10, a radio frequency chip 20, a voltage conversion circuit 30 and a power amplifier 40. The power supply module 10 is configured to provide an initial power supply voltage Vin; the voltage conversion circuit 30 is electrically connected to the power supply module 10 and the radio frequency chip 20, and is configured to receive the initial power supply voltage Vin and output a target power supply voltage VCC, the target power supply voltage VCC being related to the signal strength received by the radio frequency chip 20; the power amplifier 40 is electrically connected to the radio frequency chip 20 and the voltage conversion circuit 30, and is configured to receive the target power supply voltage VCC and a Wi-Fi radio frequency signal from the radio frequency chip 20, and amplify the power of the Wi-Fi radio frequency signal to a target power, the size of the target power being related to the target power supply voltage VCC. Through the above design, 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 into 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 into the power amplifier 40 can be slightly reduced, the saturation power of the power amplifier 40 can be reduced, and the power consumption of the radio frequency system 100 can be reduced.

[0059] In the embodiment, the transmission operating mode of the power amplifier 40 includes multiple different power modes, for example, a high power mode (High power mode, HPM), a middle power mode (Middle power mode, MPM) and a low power mode (LPM, Low power mode). In other embodiments, the transmission operating mode of the power amplifier 40 includes any two of the high power mode (High power mode, HPM), the middle power mode (Middle power mode, MPM) and the low power mode (LPM, Low power mode). In other embodiments, the transmission operating mode of the power amplifier 40 includes an ultra-high power mode, a high power mode (High power mode, HPM), a middle power mode (Middle power mode, MPM) and a low power mode (LPM, Low power mode).

[0060] In a relatively long distance (e.g. 30-50 meters, etc.), far field or weak field (separated by multiple walls in a room, etc.), the transmission operating mode of the power amplifier 40 can be switched to a high power mode. For example, the output power of the power amplifier 40 is 28dBm (but not limited to this data), which can ensure that the signal strength is the preset strength, the data download rate is greater than the preset download rate, and the user's use is satisfied.

[0061] In a relatively medium distance (e.g. 10-30 meters, etc.) or medium field (separated by one wall in a room, etc.), 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 17dBm (but not limited to this data), which can ensure that the signal strength is the preset strength, the data download rate is greater than the preset download rate, and the user's use is satisfied.

[0062] In a relatively short distance (e.g. 0-10 meters, etc.) or near field (not separated by a wall, etc.), 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 10dBm (but not limited to this data), which can ensure that the signal strength is the preset strength, the data download rate is greater than the preset download rate, and the user's use is satisfied.

[0063] Please refer to FIG. 4, which is a partial architecture diagram of the power amplifier 40 provided by the embodiment of the present 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 switch unit 42. The control end of the third switch unit 42 is electrically connected to the radio frequency chip 20. The third switch 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 in the multiple amplification modules 41 to work at the same time, so as to realize different output powers of the power amplifier 40. For example, when the third switch unit 42 makes one amplification module 41 work under the control of the radio frequency chip 20, the power amplifier 40 works in a low power mode. When the third switch unit 42 makes two amplification modules 41 work under the control of the radio frequency chip 20, the power amplifier 40 works in a medium power mode. When the third switch unit 42 makes three amplification modules 41 work under the control of the radio frequency chip 20, the power amplifier 40 works 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 in different distance scenarios or different signal strength scenarios, so as to have better signal strength in a relatively long distance, far field or weak field, and also have better signal strength while reducing the power consumption of the radio frequency system 100 in a medium distance or medium field, a short distance or a near field.

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

[0066] Referring to FIG. 5, FIG. 5 is a circuit topology diagram of the power amplifier 40 provided in the embodiment of the present application. The power amplifier 40 includes a transistor M1, a radio frequency choke circuit 412, and an input-output matching circuit 413.

[0067] The radio frequency choke circuit 412 is used to suppress the AC component in the power supply module 10 from being coupled in, and is equivalent to a DC current source. The input-output matching circuit 413 includes a DC blocking capacitor, which is used to limit the DC component from flowing 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 tube as an example, different voltages applied 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 cutoff region, at this time, the transistor M1 is not conductive, and is equivalent to an open switch; when Vgs > Vth and Vds < Vgs-Vgs(th), the transistor M1 works in the triode region (ohmic region), at this time, the channel of the MOSFET tube is conductive, and is equivalent to a closed switch; when Vgs > Vth and Vds > Vgs-Vgs(th), the transistor M1 works in the linear region (saturation region), at this time, the conductive channel begins to pinch off, and the drain current is only related to Vgs, and the transistor M1 can be used as an amplifier to amplify the power of the radio frequency signal.

[0068] The same R OPT P sat is proportional to VCC:

[0069] 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.

[0070] As can be seen from formula (1), increasing the VCC voltage can increase the Psat, and accordingly 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.

[0071] Therefore, when the radio frequency chip 20 works in the high power mode, the VCC can be increased to make the output power of the power amplifier 40 higher, and when the radio frequency chip 20 works in the medium power mode or the low power mode, the VCC can be decreased to reduce the saturation power Psat of the power amplifier 40.

[0072] If the power amplifier 40 works in the linear region, the quiescent current is I CQ , and the power consumption at this time is calculated by the following formula: dis P CQ (2)

[0073] It can be seen that, under the same quiescent current, the power consumption P dis is proportional to the voltage VCC, and the power consumption can be reduced by decreasing the voltage. Therefore, when the power amplifier 40 works in the medium power mode or the low power mode, the supply voltage (i.e., the target power supply voltage) VCC of the power amplifier 40 is correspondingly decreased, the saturation power Psat of the power amplifier 40 is reduced, and thus the power consumption of the power amplifier 40 is reduced. Generally, under the same semiconductor process condition, the lower the saturation power, the smaller the quiescent current of the power amplifier 40, and the power consumption is further reduced.

[0074] According to the proportional calculation, if the supply voltage (i.e., the target power supply voltage) VCC of the power amplifier 40 is decreased from 3.8V to 3.2V, the corresponding power consumption can be theoretically reduced by 15.7%. If the supply voltage (i.e., the target power supply voltage) VCC of the power amplifier 40 is decreased from 3.8V to 2V, the corresponding power consumption can be theoretically reduced by 47.4%. As known from the above, the radio frequency system 100 provided by the present application can greatly reduce the power consumption of the power amplifier 40 by designing the supply voltage of the power amplifier 40 to be reduced.

[0075] If the supply voltage (i.e., the target power supply voltage) VCC of the power amplifier 40 is increased, it is also known from the formula (1) that the output power of the power amplifier 40 can be increased, and the communication range can be expanded. According to the actual measurement and analysis, 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.

[0076] 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.

[0077] When the signal strength of the radio frequency signal received by the radio frequency chip 20 is a second signal strength, the voltage conversion circuit 30 outputs a second target power supply voltage VCC2. The first signal strength is smaller than the second signal strength. The first target power supply voltage VCC1 is greater than the second target power supply voltage VCC2.

[0078] 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, the saturation power of the power amplifier 40 can be further reduced, the lower the saturation power, the smaller the quiescent current of the power amplifier 40, and the power consumption is further reduced.

[0079] Optionally, in the near field and the middle field, 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 smaller than the initial power supply voltage Vin, so as to reduce the saturation power and power consumption of the power amplifier 40.

[0080] Optionally, the target power supply voltage VCC output by the voltage conversion circuit 30 can be continuously changed with the change 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 continuously adjustable. The present embodiment can further save power consumption.

[0081] Optionally, the target power supply voltage VCC output by the voltage conversion circuit 30 can be divided into multiple gears with the change 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 adjusted in multiple gears. The present embodiment has lower requirements for hardware design and software design, can save cost, has fewer peripheral elements, and can reduce the occupied space.

[0082] When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a first intensity 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 in a second intensity range, the voltage conversion circuit 30 outputs a second target power supply voltage VCC2. The minimum value of the second intensity range is greater than the maximum value of the first intensity range. The first target power supply voltage VCC1 is greater than the second target power supply voltage VCC2.

[0083] Optionally, the first intensity range and the second intensity range can be continuous or discontinuous.

[0084] In the present embodiment, the target power supply voltage VCC output by the voltage conversion circuit 30 is divided into two gears with 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 two gears, 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 gears, for example, 3.8v and 2v.

[0085] Optionally, referring to FIG. 4, the power amplifier 40 comprises a first amplification module 421, a second amplification module 422, and a third switch unit 42. The connection end of the third switch unit 42 is electrically connected to at least one of the first amplification module 421 and the second amplification module 422.

[0086] The radio frequency chip 20 is electrically connected to the control end of the third switch unit 42. The radio frequency chip 20 is connected to the control end of the third switch unit 42 through an electrical connection line. The radio frequency chip 20 is configured to generate a target mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal and send the target mode indication signal to the control end of the third switch unit 42 to control the third switch unit 42 to make the first amplification module 421 work, or make the second amplification module 422 work, or make the first amplification module 421 and the second amplification module 422 work simultaneously. Optionally, when the first amplification module 421 works, the power amplifier 40 works in a low-power mode. Optionally, when the first amplification module 421 and the second amplification module 422 work simultaneously, the power amplifier 40 works in a medium-power mode. The output power in the medium-power mode is greater than the output power in the low-power mode.

[0087] 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 a first target power. Optionally, the first target power is the output power of the power amplifier 40 in the low-power mode, indicating that the power amplifier 40 works in the low-power mode at this time.

[0088] 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. Optionally, the second target power is the output power of the power amplifier 40 in the medium-power mode, indicating that the power amplifier 40 works in the medium-power mode at this time.

[0089] In a relatively long distance (e.g. 30-50 meters, etc.), far field or weak field (separated by multiple walls in a room, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a first intensity 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 transmission operating mode of the power amplifier 40 can be switched to a high power mode. For example, the output power of the power amplifier 40 is a first target power (e.g. 28 dBm), which can ensure that the signal strength is a preset intensity, the data download rate is greater than a preset download rate, and the user's use is satisfied.

[0090] In a relatively medium distance (e.g. 10-30 meters, etc.) or medium field (separated by one wall in a room, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a second intensity 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 a preset intensity, the data download rate is greater than a preset download rate, and the user's use is satisfied.

[0091] 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.

[0092] When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in the first intensity range, the voltage conversion circuit 30 outputs the 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 in the second intensity range, the voltage conversion circuit 30 outputs the second target power supply voltage VCC2. When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in the third intensity range, the voltage conversion circuit 30 outputs the third target power supply voltage VCC3. The minimum value of the second intensity range is greater than the maximum value of the first intensity range. The first target power supply voltage VCC1 is greater than the second target power supply voltage VCC2. 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 VCC2 is greater than the third target power supply voltage VCC3.

[0093] The power amplifier 40 comprises a first amplification module 421, a second amplification module 422, a third amplification module (not shown in the figure) and a third switch unit 42. The connection end of the third switch 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 further comprises a third amplification module. The connection end of the third switch unit 42 is electrically connected to the third amplification module.

[0094] 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 a 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.

[0095] The radio frequency chip 20 is electrically connected to the control end of the third switch unit 42. The radio frequency chip 20 is configured to generate a target mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal and send the target mode indication signal to the control end of the third switch unit 42 to control the third switch unit 42 to make the first amplification module 421 work, the second amplification module 422 work, and any one or more of the third amplification module work. Optionally, when the first amplification module 421 works, the power amplifier 40 works in a low power mode. Optionally, when the first amplification module 421 and the second amplification module 422 work simultaneously, the power amplifier 40 works in a medium power mode. Optionally, when the first amplification module 421, the second amplification module 422 and the third amplification module work simultaneously, the power amplifier 40 works in a high power mode.

[0096] Please refer to FIG. 6, which is a schematic diagram of the power amplifier 40 with three power supply voltage levels according to an embodiment of the present application. In a relatively long distance (for example, 30-50 meters, etc.), a far field or a weak field (several walls in a room, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a first strength range (for example, -80 to -90 dBm), and the voltage conversion circuit 30 outputs a first target power supply voltage VCC1 (for example, 3.8 V). The transmission working mode of the power amplifier 40 can be switched to a high power mode. For example, the output power of the power amplifier 40 is a first target power (for example, 28 dBm), which can ensure that the signal strength is a preset strength, the online data download rate is greater than a preset download rate, and the user's use is satisfied.

[0097] In a relative medium distance (e.g. 10-30 meters, etc.) or a medium field (indoor separated by a wall, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a second strength range (-50- -80 dBm), and the voltage conversion circuit 30 outputs a second target power supply voltage VCC2 (e.g. 3.2v). The transmission working 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 a preset strength, the online data download rate is greater than a preset download rate, and the user use is satisfied.

[0098] In a relative short distance (e.g. 0-10 meters, etc.) or a short field (not separated by a wall, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a third strength range (-30- -50 dBm), and the voltage conversion circuit 30 outputs a third target power supply voltage VCC3 (e.g. 2v). The transmission working 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 can ensure that the signal strength is a preset strength, the online data download rate is greater than a preset download rate, and the user use is satisfied.

[0099] Optionally, please refer to FIG. 7, which is another partial architecture diagram of the radio frequency system 100 provided by the embodiment of the present application. The number of the power amplifiers 40 is multiple. The multiple power amplifiers 40 include at least one first power amplifier 431 and at least one second power amplifier 432. The first power amplifier 431 is configured to amplify the radio frequency signal of Wi-Fi 2.4G. The second power amplifier 432 is configured to amplify the radio frequency signal of Wi-Fi 5G and / or Wi-Fi 6G.

[0100] Please refer to FIG. 7, the radio frequency system 100 further includes multiple front-end transceiver circuits 51. Each front-end transceiver circuit 51 is electrically connected to one power amplifier 40.

[0101] For example, the number of the second power amplifiers 432 is two, and the number of the first power amplifiers 431 is two. Each power amplifier 40 is electrically connected to one front-end transceiver circuit 51. The front-end transceiver circuit 51 includes but is not limited to a filter, a power divider, an antenna switch, a low-loss amplifier, etc.

[0102] The embodiment can support a Wi-Fi 2.4G single working scenario, a Wi-Fi 5G single working scenario, a Wi-Fi 2.4G and Wi-Fi 5G simultaneous working scenario, a Wi-Fi 2.4G 2*2 mimo working scenario, a Wi-Fi 5G 2*2 mimo working scenario, etc.

[0103] Referring to FIG. 7, the electronic device 1000 includes the radio frequency system 100. The electronic device 1000 further includes a plurality of antenna radiators 61. Each of the antenna radiators 61 is connected to at least one of the power amplifiers 40.

[0104] The radio frequency chip 20 includes an RFIC (Radio Frequency Integrated Circuit) and a Modem (Modulator-demodulator chip), and is used for Wi-Fi radio frequency signal transceiving and modulation and demodulation. The radio frequency system 100 further includes a plurality of radio frequency front-end transceiver modules. For example, two Wi-Fi 2.4G radio frequency front-end transceiver modules and two Wi-Fi 5G / 6G radio frequency front-end transceiver modules are included. The Wi-Fi 2.4G radio frequency front-end transceiver module includes a first power amplifier 431 and a front-end transceiver circuit 51, and the front-end transceiver circuit 51 includes a low-noise amplifier, a switch, a coupler and the like. The Wi-Fi 5G / 6G radio frequency front-end transceiver module includes a second power amplifier 432 and a front-end transceiver circuit 51, and the front-end transceiver circuit 51 includes a low-noise amplifier, a switch, a coupler and the like.

[0105] The power supply of the power amplifiers 40 in the four radio frequency front-end transceiver modules is provided by the power supply module 10. Optionally, the battery of the power supply module 10 includes a double-core battery (8V) which is output after half-voltage processing.

[0106] The specific signal flow of the radio frequency system 100 is as follows:

[0107] When transmitting, the Wi-Fi radio frequency signal from the radio frequency chip 20 enters the TX (Transmit) path, and the radio frequency chip 20 controls the power amplifiers 40 to work in different power modes according to the signal strength indication signal. The mode indication signal is input to the power amplifiers 40 through the general-purpose input / output (GPIO) interface on the power amplifiers 40 to indicate that the power amplifiers 40 work in high power mode, medium power mode and low power mode. The first mode indication signal to the fourth mode indication signal received by the four power amplifiers 40 are GPIO_20, GPIO_21, GPIO_50 and GPIO_51 respectively.

[0108] The specific flow is as follows:

[0109] When the far field is working, the Wi-Fi radio frequency signal from the radio frequency chip 20 enters the TX (transmit) channel, the signal strength indication (the first strength signal) controls the voltage conversion circuit 30 to output the first target power voltage VCC1, the radio frequency chip 20 outputs (1, 1) (the first mode indication signal) to the power amplifier 40 through the GPIO interface, so that the power amplifier 40 works in the high power mode, at this time the power amplifier 40 transmits large power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40 and the filter circuit to the antenna port.

[0110] When the medium field is working, the Wi-Fi radio frequency signal from the radio frequency chip 20 enters the TX (transmit) channel, the signal strength indication (the second strength signal) controls the voltage conversion circuit 30 to output the second target power voltage VCC2, the radio frequency chip 20 outputs (0, 1) to make the power amplifier 40 work in the medium power mode, at this time the power amplifier 40 transmits medium power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40 and the filter circuit to the antenna port.

[0111] When the near field is working, the Wi-Fi radio frequency signal from the radio frequency chip 20 enters the TX (transmit) channel, the signal strength indication (the third strength signal) controls the voltage conversion circuit 30 to output the third target power voltage VCC3, the radio frequency chip 20 outputs (0, 0) to make the power amplifier 40 work in the low power mode, at this time the power amplifier 40 transmits low power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40 and the filter circuit to the antenna port.

[0112] Optionally, when the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in the third strength range, the voltage conversion circuit 30 outputs the third target power 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 voltage VCC2 is greater than the third target power voltage VCC3. When the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in the fourth strength range, the voltage conversion circuit 30 outputs the fourth target power 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 voltage VCC4 is greater than the first target power voltage VCC1.

[0113] By increasing a voltage conversion circuit 30, the high voltage (8V) of the double battery is reduced, and when the power amplifier 40 works in different power modes, the radio frequency 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 end of the switching unit of the voltage conversion circuit 30, so as to realize high power output or low power consumption transmission.

[0114] The system workflow is as follows:

[0115] When the weak field works, the radio frequency chip 20 outputs the fourth mode indication signal (for example, 1, 1) through the GPIO interface, so that the power amplifier 40 works in the super high power mode, and the GPIO_SW interface outputs the fourth voltage conversion signal (for example, 1, 1), so that the voltage conversion circuit 30 outputs the fourth target power supply voltage VCC4 (for example, 4.2V) voltage, at this time the system enters the wall-penetrating mode, the power amplifier 40 transmits high power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40, the filter circuit and the antenna port.

[0116] When the far field works, the radio frequency chip 20 outputs the first mode indication signal (for example, 1, 0) through the GPIO interface, so that the power amplifier 40 works in the high power mode, and the GPIO_SW interface outputs the first voltage conversion signal (for example, 1, 0), so that the voltage conversion circuit 30 outputs the first target power supply voltage VCC1 (for example, 3.8V) voltage, the power amplifier 40 transmits relatively large power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40, the filter circuit and the antenna port.

[0117] When the medium field works, the radio frequency chip 20 outputs the second mode indication signal (for example, 0, 1) through the GPIO interface, so that the power amplifier 40 works in the medium power mode, and the GPIO_SW interface outputs the second voltage conversion signal (for example, 0, 1), so that the voltage conversion circuit 30 outputs the second target power supply voltage VCC2 (for example, 3.2V) voltage, at this time the power amplifier 40 transmits medium power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40, the filter circuit and the antenna port.

[0118] When the near field works, the radio frequency chip 20 outputs the third mode indication signal (for example, 0, 0) through the GPIO interface, so that the power amplifier 40 works in the low power mode, and the GPIO_SW interface outputs the third voltage conversion signal (for example, 0, 0), so that the voltage conversion circuit 30 outputs the third target power supply voltage VCC3 (for example, 2V) voltage, at this time the power amplifier 40 transmits low power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40, the filter circuit and the antenna port.

[0119] The following will illustrate the specific structure of the voltage conversion circuit 30 in conjunction with the accompanying drawings.

[0120] Optionally, referring to FIG. 8, FIG. 8 is a first structure schematic diagram of the voltage conversion circuit 30 provided by the embodiment. The voltage conversion circuit 30 comprises at least one first switch unit 31 and at least one first voltage dividing element 32. One end of the at least one first voltage dividing element 32 is electrically connected to the power module 10. The other end of the first voltage dividing element 32 is grounded; or, the at least one first voltage dividing 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 end of the at least one first switch unit 31. The two ends of the at least one first switch unit 31 are respectively electrically connected to the two ends of the at least one first voltage dividing element 32.

[0121] The embodiment does not specifically limit the number of the first switch unit 31 and the number of the first voltage dividing element 32.

[0122] Optionally, the first voltage dividing element 32 and the first switch unit 31 can be arranged in series or in parallel. In the embodiment, the first voltage dividing element 32 and the first switch unit 31 are arranged in parallel.

[0123] The first switch unit 31 is configured to be in a conduction state. At this time, the first voltage dividing element 32 is short-circuited, and the voltage conversion circuit 30 outputs the first target power supply voltage VCC1.

[0124] The first switch unit 31 is configured to be in a disconnection state. At this time, the first voltage dividing element 32 performs voltage division, and the voltage conversion circuit 30 outputs the second target power supply voltage VCC2.

[0125] Further optionally, referring to FIG. 9, FIG. 9 is a second structure schematic diagram of the voltage conversion circuit 30 provided by the embodiment. The voltage conversion circuit 30 further comprises at least one second switch unit 33 and at least one second voltage dividing element 34. One end of the at least one second voltage dividing element 34 is electrically connected to the power module 10. The other end of the second voltage dividing element 34 is grounded; or, the at least one second voltage dividing 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 end of the at least one second switch unit 33. The two ends of the at least one second switch unit 33 are respectively electrically connected to the two ends of the at least one second voltage dividing 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 switch unit 31 and the second switch unit 33.

[0126] The number of the first switch unit 31 and the number of the first voltage dividing element 32 are not specifically limited in the embodiment. The number of the second switch unit 33 and the number of the second voltage dividing element 34 are not specifically limited in the embodiment.

[0127] Optionally, the first voltage dividing element 32 and the second voltage dividing element 34 can be arranged in series or in parallel. In the embodiment, the first voltage dividing element 32 and the second voltage dividing element 34 are arranged in series.

[0128] Optionally, the first voltage dividing element 32 and the first switch unit 31 can be arranged in series or in parallel. In the embodiment, the first voltage dividing element 32 and the first switch unit 31 are arranged in parallel.

[0129] Optionally, the second voltage dividing element 34 and the second switch unit 33 can be arranged in series or in parallel. In the embodiment, the second voltage dividing element 34 and the second switch unit 33 are arranged in parallel.

[0130] Optionally, the first voltage dividing element 32 and the second voltage dividing element 34 include but are not limited to voltage dividing resistors.

[0131] Optionally, the first voltage dividing element 32 and the second voltage dividing element 34 are connected in parallel or in series with the power amplification circuit. In the embodiment, the first voltage dividing element 32 and the second voltage dividing element 34 are connected in series with the power amplification circuit.

[0132] The second switch unit 33 is configured in an off state. The first switch unit 31 is configured in an on state, and the second voltage dividing element 34 divides voltage, so that the voltage conversion circuit 30 outputs the third target power supply voltage VCC3.

[0133] The second switch unit 33 is configured in an off state. The first switch unit 31 is configured in an off state, the first voltage dividing element 32 divides voltage, and the second voltage dividing element 34 divides voltage, so that the voltage conversion circuit 30 outputs the fourth target power supply voltage VCC4. In the embodiment, the fourth target power supply voltage VCC4 can be a voltage under a stronger field, for example, 1.8v. In other embodiments, for example, the first voltage dividing element 32 and the second voltage dividing element 34 are arranged in parallel, the first switch unit 31 and the first voltage dividing element 32 are arranged in series, the second switch unit 33 and the second voltage dividing element 34 are arranged in series, and the first switch unit 31 and the second switch unit 33 are turned on at the same time, so that the total resistance of the first voltage dividing element 32 and the second voltage dividing element 34 is minimized. At this time, the voltage conversion circuit 30 outputs the fourth target power supply voltage VCC4, for example, 4.2v.

[0134] Optionally, please refer to FIG. 10, which is a third structure diagram of the voltage conversion circuit 30 provided by the embodiment of the present application. The voltage conversion circuit 30 comprises a voltage stabilizing circuit 35. The voltage stabilizing circuit 35 is electrically connected between the first voltage dividing element 32 and the power supply module 10. In the present embodiment, the voltage stabilizing circuit 35 is arranged to make the output voltage of the voltage conversion circuit 30 not change with the load size, so that the target power supply voltage VCC is relatively stable.

[0135] Optionally, the first voltage dividing element 32 and the second voltage dividing element 34 are connected in series and are connected in parallel with the power amplifier 40. The voltage conversion circuit 30 further comprises a first voltage dividing resistor and a second voltage dividing resistor. The second voltage dividing resistor comprises the first voltage dividing element 32 and the second voltage dividing element 34 connected in series.

[0136] Optionally, please refer to FIG. 10, the voltage stabilizing circuit 35 comprises a reference voltage source 351, a differential amplifier circuit 352, and a switch tube 353. The first connection end of the switch tube 353 is electrically connected to the power supply module 10. The second connection end of the switch tube 353 is electrically connected to one end of the first voltage dividing resistor R1 and the power amplifier 40. The reference voltage source 351 is used to provide a reference voltage.

[0137] The other end of the first voltage dividing resistor R1 is electrically connected to one end of the second voltage dividing resistor and the first input end of the differential amplifier circuit 352. The other end of the second voltage dividing resistor R2 is grounded. The second input end of the differential amplifier circuit 352 is electrically connected to the reference voltage source 351. The output end of the differential amplifier circuit 352 is electrically connected to the control end of the switch tube 353.

[0138] The output voltage (target power supply voltage VCC) of the voltage conversion circuit 30 is: VCC=Vref*(1+R1 / R2), wherein Vref is the reference voltage, R1 is the first voltage dividing resistor R1, and R2 is the second voltage dividing resistor R2.

[0139] In the present embodiment, the first switch unit 31 and the second switch unit 33 can change the size of the second voltage dividing resistor R2, and further change the output voltage of the voltage conversion circuit 30.

[0140] The sampling value of the first input end of the differential amplifier circuit 352 is compared with the reference voltage, and the difference between the two is passed through the differential amplifier circuit 352 to control the Vgs change of the switch tube 353, thereby changing the internal resistance of the switch tube 353, increasing / decreasing the voltage drop on the switch tube 353, and keeping the voltage (target power supply voltage VCC) input by the power amplifier 40 stable. When the target power supply voltage VCC is greater than the set value, the feedback loop controls the internal resistance (Rmos) of the switch tube 353 to increase, so that the voltage division of the switch tube 353 increases, and the target power supply voltage VCC decreases. The same applies when the target power supply voltage VCC is lower than the set value.

[0141] Alternatively, please refer to FIG. 11, which is a fourth structural schematic diagram of the voltage conversion circuit 30 provided by the embodiment of the application. The voltage conversion circuit 30 includes a reference voltage source 351, a differential amplifier circuit 352, a switch tube 353, a first voltage dividing resistor R1, and a second voltage dividing resistor R2. The first connection end of the switch tube 353 is electrically connected to the power supply module 10. The second connection end of the switch tube 353 is electrically connected to one end of the first voltage dividing resistor R1 and the power amplifier 40.

[0142] The other end of the first voltage dividing resistor R1 is electrically connected to one end of the second voltage dividing resistor R2 and the first input end of the differential amplifier circuit 352. The other end of the second voltage dividing resistor R2 is grounded. The second input end of the differential amplifier circuit 352 is electrically connected to the reference voltage source 351. The output end of the differential amplifier circuit 352 is electrically connected to the control end of the switch tube 353.

[0143] The output voltage (target power supply voltage VCC) of the voltage conversion circuit 30 is: VCC=Vref`*(1+R1 / R2), where Vref` is the voltage of the second input end of the differential amplifier circuit 352. R1 is the first voltage dividing resistor R1, and R2 is the second voltage dividing resistor R2.

[0144] The embodiment realizes that the output voltage of the voltage conversion circuit 30 does not change with the size of the load, so that the target power supply voltage VCC is relatively stable.

[0145] Further, referring to FIG. 11, the voltage conversion circuit 30 further comprises at least one first switch unit 31 and at least one first voltage dividing element 32. One end of the at least one first voltage dividing element 32 is electrically connected to the reference voltage source 351. The other end of the first voltage dividing element 32 is grounded; or, the at least one first voltage dividing element 32 is electrically connected between the reference voltage source 351 and the second input end of the differential amplifier circuit 352. The control end of the at least one first switch unit 31 is electrically connected to the radio frequency chip 20. The two ends of the at least one first switch unit 31 are respectively electrically connected to the two ends of the at least one first voltage dividing element 32.

[0146] The first switch unit 31 is configured to be in a conducting 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 switch unit 31.

[0147] The embodiment can change the voltage of the second input end of the differential amplifier circuit 352 by setting the first switch unit 31 and the first voltage dividing element 32 between the reference voltage source 351 and the second input end of the differential amplifier circuit 352, and further change the output voltage of the voltage conversion circuit 30.

[0148] The embodiment can refer to the foregoing embodiment of changing the output voltage of the voltage conversion circuit 30 by setting the first switch unit 31 and the first voltage dividing element 32 to change the resistance value of the second voltage dividing resistor R2.

[0149] Further, referring to FIG. 12, FIG. 12 is a fifth structural schematic diagram of the voltage conversion circuit 30 provided by the embodiment of the present application. The embodiment can also set the second switch unit 33 and the second voltage dividing element 34 between the reference voltage source 351 and the second input end of the differential amplifier circuit 352, which can be specifically referred to the foregoing design.

[0150] In other embodiments, the number of voltage conversion circuits 30 can be multiple, and each voltage conversion circuit 30 can perform a voltage drop to realize a super-low voltage conversion circuit 30.

[0151] In other embodiments, referring to FIG. 13, FIG. 13 is a sixth structural schematic diagram of the voltage conversion circuit 30 provided by the embodiment of the present application. The voltage conversion circuit 30 can also realize voltage boosting of the initial power supply voltage Vin. The voltage conversion circuit 30 is exemplified in combination with the drawings. The voltage conversion circuit 30 comprises a switch S1, an inductor L1, a diode D1, and a capacitor C1. The inductor L1, the diode D1, and the capacitor C1 are connected in series in a loop, and the two ends of the switch S1 are electrically connected to a node between the inductor L1 and the diode D1 and to the ground.

[0152] When the switch S1 is closed, the initial power supply voltage Vin provided by the power module 10 charges the inductor L1. When the switch S1 is opened, the energy in the inductor L1 discharges to the load through the diode D1 (as shown by the dashed line n1 in the figure). At the same time, the initial power supply voltage Vin provided by the power module 10 also discharges to the load through the diode D1 (as shown by the dashed line n2 in the figure), and the two voltages (the inductor L1 + the initial power supply voltage Vin) are superimposed to the target power supply voltage VCC output by the voltage conversion circuit 30 to achieve voltage boosting. The repeated on-off operation of the switch S1 enables the output end to obtain a high voltage and maintain a continuous stable current.

[0153] The radio frequency system 100 provided in the application, compared with the traditional power amplifier 40 architecture, the power amplifier 40 scheme provided in the application realizes high power output on the one hand, and increases the communication coverage range, and on the other hand, in the medium and low power scene, the power consumption of the power amplifier 40 is reduced by configuring different voltages for the power amplifier 40. Through calculation, in the low power mode, the single transmitting power consumption can be reduced by 47% by using 2V power supply. In the near field P2P scene, if four power amplifiers 40 are opened in a mobile phone containing four power amplifiers 40, considering that ICQ = 80mA and the duty cycle is 90%, the power consumption can be reduced by 0.5W, and these benefits can effectively improve the endurance and performance of the terminal.

[0154] The application provides a high-performance Wi-Fi circuit scheme which changes the traditional power supply architecture of the mobile phone Wi-Fi, converts the double or single battery voltage into different voltage grades by increasing the voltage conversion circuit 30, and configures different voltages for the power amplifier 40 according to the signal strength, wherein the high voltage is applied to the far field or the through-wall mode, and is used for improving the output power of the power amplifier 40; the medium and low voltages are used for the medium power mode and the low power mode, and realize low power consumption in the medium and low power application scene, so that the high power demand and the low power consumption target of the Wi-Fi are realized at a very low cost, and there is obvious advantage for creating high-performance Wi-Fi communication experience.

[0155] Please refer to FIG. 14, which is a flow chart of the power amplification method of the radio frequency system 100 provided in the embodiment of the application. The embodiment of the application further provides a power amplification method of the radio frequency system 100. The method is applied to the radio frequency system 100 in any of the above embodiments. In combination with FIGS. 1-13, the radio frequency system 100 comprises a power 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 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 through the electrical connection line. The power amplifier 40 is electrically connected to the radio frequency chip 20 and the voltage conversion circuit 30.

[0156] The method includes, but is not limited to, the following steps.

[0157] Step S100: determining a target power supply voltage VCC of the power amplifier 40 according to a signal strength of a received Wi-Fi radio frequency signal.

[0158] The voltage conversion circuit 30 is configured to receive the initial power supply voltage Vin from the power supply module 10 and output a target power supply voltage VCC to the power amplifier 40. In other words, the voltage conversion circuit 30 is used to convert the initial power supply voltage Vin into the target power supply voltage VCC under the control of the radio frequency chip 20. The control signal of the radio frequency chip 20 affects the size 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, that is, 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, that is, the voltage conversion circuit 30 has a buck function. In other words, the voltage conversion circuit 30 realizes the adjustable voltage output by the power supply module 10, that is, realizes the adjustable power supply voltage of the power amplifier 40.

[0159] The target power supply voltage VCC is related to the signal strength (Received Signal Strength Indication, RSSI) received by the radio frequency chip 20. Optionally, the stronger the Wi-Fi radio frequency signal received by the radio frequency chip 20, the smaller the target power supply voltage VCC. Optionally, the weaker the Wi-Fi radio frequency signal received by the radio frequency chip 20, the greater the target power supply voltage VCC.

[0160] Step S200: amplifying the power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage VCC.

[0161] 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.

[0162] The size of 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. The target power decreases as the target power supply voltage VCC decreases.

[0163] In this way, 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.

[0164] In the near field, the signal strength received by the radio frequency chip 20 is large, and the target power supply voltage VCC is small (e.g., less than the initial power supply voltage Vin) to meet the power requirement and the signal strength requirement, and the power supply voltage of the power amplifier 40 is less than the initial power supply voltage Vin, thereby reducing the power consumption compared to the case where the power supply voltage is not adjusted.

[0165] Referring to FIG. 15, step S100: determining the target power supply voltage VCC of the power amplifier 40 according to the signal strength of the received Wi-Fi radio frequency signal includes but is not limited to the following steps.

[0166] Step S111: generating a voltage conversion signal and a mode indication signal according to the signal strength of the received Wi-Fi radio frequency signal.

[0167] Step S112: generating the target power supply voltage VCC according to the voltage conversion signal.

[0168] In other words, the stronger the received signal strength of 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, the saturation power of the power amplifier 40 can be further reduced, and the lower the saturation power, the smaller the quiescent current of the power amplifier 40, thereby further reducing the power consumption.

[0169] Optionally, in the near field and the middle field, the received signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is 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 to reduce the saturation power and the power consumption of the power amplifier 40.

[0170] Step S200: amplifying the power of the Wi-Fi radio frequency signal to be transmitted to the target power according to the target power supply voltage VCC includes but is not limited to the following steps.

[0171] Step S211: determining a target power amplification mode according to 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.

[0172] Referring to FIG. 16 and FIG. 17, step S100: determining the target power supply voltage VCC of the power amplifier 40 according to the signal strength of the received Wi-Fi radio frequency signal includes but is not limited to the following steps.

[0173] Step S121: 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 in a first strength range. Generating a first target power supply voltage VCC1 according to the first voltage conversion signal.

[0174] Step S122: generating 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. A second target power supply voltage VCC2 is generated according to 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.

[0175] The target power supply voltage VCC output by the voltage conversion circuit 30 is divided into two levels according to the range of the received signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20, i.e., the target power supply voltage VCC output by the voltage conversion circuit 30 is adjustable in two levels, such as 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, such as 3.8v and 2v.

[0176] Referring to FIGS. 16 and 17, step S200: amplifying the power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage VCC, including but not limited to the following steps.

[0177] Step S221: determining a first power amplification mode according to 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 a first target power.

[0178] Step S222: determining a second power amplification mode according to 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 a second target power. Wherein, the first target power is greater than the second target power.

[0179] In a relatively long distance (e.g., 30-50 meters, etc.), far field or weak field (several walls indoors, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in 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 transmission operating mode of the power amplifier 40 can be switched to a high power mode. For example, the output power of the power amplifier 40 is a first target power (e.g., 28 dBm), which can ensure that the signal strength is a preset strength, the online data download rate is greater than a preset download rate, and the user's use is satisfied.

[0180] In a relative medium distance (for example, 10-30 meters, etc.) or a medium field (indoor separated by a wall, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a second strength range (-50- -80 dBm), and the voltage conversion circuit 30 outputs a second target power supply voltage VCC2 (for example, 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 17dBm (but not limited to this data), which can ensure that the signal strength is a preset strength, the online data download rate is greater than a preset download rate, and the user use is satisfied.

[0181] Referring to FIG. 18, step S100: determining the target power supply voltage VCC of the power amplifier 40 according to the signal strength of the received Wi-Fi radio frequency signal. It also includes:

[0182] Step S123: generating 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. Generating a third target power supply voltage VCC3 according to 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.

[0183] Step S200: amplifying the power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage VCC, including but not limited to the following steps.

[0184] Step S223: determining a third power amplification mode according to 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 a third target power. The second target power is greater than the third target power.

[0185] 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 three levels adjustable, for example, 3.8v, 3.2v, 2v.

[0186] On the basis of the foregoing, the embodiment further adds that, in a relatively short distance (for example, 0-10 meters, etc.) or a near field (no partition, etc.), the signal strength of the Wi-Fi radio frequency signal received by the radio frequency chip 20 is in a third intensity range (-30- -50 dBm), and the voltage conversion circuit 30 outputs a third target power supply voltage VCC3 (for example, 2v). The transmission working 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 (for example, 10 dBm), which can ensure that the signal strength is a preset intensity, the online data download rate is greater than a preset download rate, and the user use is satisfied.

[0187] Referring to FIG. 19, step S100: determining the target power supply voltage VCC of the power amplifier 40 according to the signal strength of the received Wi-Fi radio frequency signal. Further comprising:

[0188] Step S124: generating 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 the fourth intensity range. Generating a fourth target power supply voltage VCC4 according to 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.

[0189] Step S200: amplifying the power of the Wi-Fi radio frequency signal to be transmitted to a target power according to the target power supply voltage VCC, including but not limited to the following steps.

[0190] Step S224: determining a fourth power amplification mode according to 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 a fourth target power. The fourth target power is greater than the first target power.

[0191] By adding a voltage conversion circuit 30, the high voltage (8V) of the double-cell battery is reduced. When the power amplifier 40 works in different power modes, the radio frequency 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 end of the switching unit on the voltage conversion circuit 30, so as to realize high-power output or low-power consumption transmission.

[0192] On the basis of the foregoing, the embodiment further adds that when the weak field works, the radio frequency chip 20 outputs a fourth mode indication signal (for example, 1, 1) through the GPIO interface, so that the power amplifier 40 works in the super high power mode, and the GPIO_SW interface outputs a fourth voltage conversion signal (for example, 1, 1), so that the voltage conversion circuit 30 outputs a fourth target power supply voltage VCC4 (for example, 4.2V) voltage, at this time, the system enters the wall-penetrating mode, the power amplifier 40 transmits a large power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40, the filtering circuit and the antenna port.

[0193] In other embodiments, the method further comprises:

[0194] The target power supply voltage VCC is determined based on a target application scenario, the data download speed of the target application scenario is greater than a preset download speed, and the target power supply voltage VCC is greater than a preset voltage.

[0195] Optionally, the target application scenario is, for example, a game, a video scenario or the like, and a scenario with a high data download speed is required. At this time, the electronic device 1000 acquires that the current scenario is the target application scenario, the Wi-Fi radio frequency signal from the radio frequency chip 20 enters the TX (transmitting) channel, the voltage conversion circuit 30 outputs a first target power supply voltage VCC1 according to the target application scenario, the radio frequency chip 20 outputs (1, 1) (a first mode indication signal) to the power amplifier 40 through the GPIO interface, so that the power amplifier 40 works in the high power mode, at this time, the power amplifier 40 transmits a large power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40, the filtering circuit and the antenna port.

[0196] Alternatively, the radio frequency chip 20 outputs a fourth mode indication signal (for example, 1, 1) through the GPIO interface, so that the power amplifier 40 works in the super high power mode, and the GPIO_SW interface outputs a fourth voltage conversion signal (for example, 1, 1), so that the voltage conversion circuit 30 outputs a fourth target power supply voltage VCC4 (for example, 4.2V) voltage, at this time, the system enters the wall-penetrating mode, the power amplifier 40 transmits a large power, and the Wi-Fi radio frequency signal from the radio frequency chip 20 is output through the power amplifier 40, the filtering circuit and the antenna port.

[0197] Further, in other embodiments, the target power supply voltage VCC is determined based on a target application scenario, and the method further comprises:

[0198] If the target application scenario is a short video continuous playing scenario, the voltage conversion circuit 30 can output a fourth target power supply voltage VCC4 in the first time period, the power amplifier 40 works in the super high power mode, and after the number of short videos not played has a preset cache amount, the voltage conversion circuit 30 outputs a third target power supply voltage VCC3 in the second time period, and the power amplifier 40 works in the low power mode. In this way, the power amplifier 40 can be prevented from working in the super high power mode for a long time, so that the power consumption is large.

[0199] Each module in the control device can be implemented by software, hardware, or a combination thereof, in whole or in part. Each module can be embedded in or independent of a processor in the computer device in hardware form, or stored in a memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to each module.

[0200] Referring to FIG. 20, the present application further 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, and the processor 300 implements the steps of the method of any one of the above embodiments when executing the computer program.

[0201] 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, the memory 200, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. The processor 300 of the terminal is configured to provide computing and control capabilities. The memory 200 of the terminal includes a non-volatile storage medium and an internal memory 200. The non-volatile storage medium stores an operating system and a computer program. The internal memory 200 provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the terminal is configured to exchange information between the processor 300 and external devices. The communication interface of the terminal is configured to communicate with external terminals in a wired or wireless manner. The wireless manner can be achieved by Wi-Fi, mobile cellular network, NFC (Near Field Communication), or other technologies. The computer program is executed by the processor 300 to implement a control method.

[0202] In one embodiment, a computer storage medium is provided, which stores an executable program. When the executable program is executed by a processor, the steps of the above method embodiments are implemented.

[0203] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiment methods. Any reference to the memory 200, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory 200. The non-volatile memory 200 can include read-only memory 200 (ROM), magnetic tape, floppy disk, flash memory, optical storage 200, high-density embedded non-volatile memory 200, resistive memory 200 (ReRAM), magnetic resistive memory 200 (MRAM), ferroelectric memory 200 (FRAM), phase change memory 200 (PCM), graphene memory 200, etc. The volatile memory 200 can include random access memory 200 (RAM) or external cache memory 200, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory 200 (SRAM) or dynamic random access memory 200 (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor 300 involved in the embodiments provided in the present application can 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 data processing logic device based on quantum computing, etc., without being limited thereto.

[0204] Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application, and these improvements and refinements are also considered as the protection scope of the present application.

Claims

1. A radio frequency system, wherein, 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. The radio frequency system of any of claims 2 to 4, wherein, 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 2-4, 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 2-4, 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, wherein, 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, wherein, 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 executable program is executed by the processor to implement the method of any one of claims 14 to 18.

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