Radio frequency front-end circuit, radio frequency transceiving device and electronic equipment

Abstract

The invention provides a radio frequency front-end circuit, a radio frequency transceiving device and electronic equipment. The radio frequency front-end circuit comprises a radio frequency transceiver, a power amplifier and a power supply module; the radio frequency transceiver is used for outputting a first radio frequency signal, and the first radio frequency signal comprises a plurality of symbols; the power amplifier performs power amplification on the first radio frequency signal to obtain a second radio frequency signal; the power supply module comprises a main power supply sub-module and an auxiliary power supply sub-module, and the power supply module has a first state in which the main power supply sub-module independently outputs a first voltage as a target power supply voltage, and also has a second state in which the main power supply sub-module and the auxiliary power supply sub-module cooperatively output a second voltage as the target power supply voltage. The voltage value of the second voltage is greater than that of the first voltage, and the target power supply voltage is used for supplying power to the power amplifier; and the radio frequency transceiver sends a control signal according to the actual voltage required by the symbol to control the power supply module to be in the first state or the second state, so that the target power supply voltage is matched with the actual voltage.

Description

Technical Field

[0001] The present application relates to the field of communication technologies, and particularly to a radio frequency front-end circuit, a radio frequency transceiver device, and an electronic device. Background Art

[0002] With the development of technologies, the popularity of electronic devices with communication functions such as mobile phones is getting higher and higher, and the functions are getting more and more powerful. A radio frequency transceiver device is usually included in an electronic device to implement the communication function of the electronic device. However, the efficiency of the radio frequency transceiver device in the related art electronic device is relatively low. Summary of the Invention

[0003] In a first aspect, an embodiment of the present application provides a radio frequency front-end circuit, where the radio frequency front-end circuit includes:

[0004] A radio frequency transceiver, which is configured to output a first radio frequency signal, where the first radio frequency signal includes a plurality of symbols;

[0005] A power amplifier, electrically connected to the radio frequency transceiver, for amplifying the power of the first radio frequency signal to obtain a second radio frequency signal; and

[0006] A power supply module, where the power supply module includes a main power supply sub-module and an auxiliary power supply sub-module. The power supply module has a first state in which the main power supply sub-module independently outputs a first voltage as a target power supply voltage, and also has a second state in which the main power supply sub-module and the auxiliary power supply sub-module cooperate to output a second voltage as the target power supply voltage. The voltage value of the second voltage is greater than the voltage value of the first voltage. The target power supply voltage is used to supply power to the power amplifier;

[0007] Wherein, the radio frequency transceiver issues a control signal according to the actual voltage required by the symbol to control the power supply module to be in the first state or the second state, so that the target power supply voltage matches the actual voltage.

[0008] In a second aspect, an embodiment of the present application provides a radio frequency transceiver device, where the radio frequency transceiver device includes:

[0009] A radiator; and

[0010] The radio frequency front-end circuit as described in the first aspect, where the power amplifier of the radio frequency front-end circuit is electrically connected to the radiator.

[0011] In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes the radio frequency transceiver device as described in the second aspect.

[0012] In summary, for the RF front-end circuit provided by the embodiment of the present application, the power supply module includes a main power supply sub-module and an auxiliary power supply sub-module. Therefore, the power supply module has a first state of outputting a first voltage as the target power supply voltage, and the power supply module also has a second state of outputting a second voltage as the target power supply voltage. The voltage value of the second voltage is greater than the voltage value of the first voltage. The RF transceiver issues a control signal according to the actual voltage required by the symbol, and the control signal controls the power supply module to be in the first state or the second state, so that the target power supply voltage matches the actual voltage. It can be seen that the RF front-end circuit provided by the embodiment of the present application can dynamically adjust the target power supply voltage output by the power supply module according to the target power supply voltage required by each symbol. Therefore, the target power supply voltage output by the power supply module matches the actual voltage required by the symbol, so that the power amplifier can obtain higher efficiency and optimize the power consumption of the power amplifier. Therefore, the RF front-end circuit provided by the embodiment of the present application, the RF transceiver device to which the RF front-end circuit is applied, and the electronic device have higher efficiency. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 Schematic diagram of an electronic device provided by an embodiment of the present application;

[0015] Figure 2 For one embodiment Figure 1 Circuit block diagram of the RF transceiver device in the electronic device shown in

[0016] Figure 3 Schematic diagram of an RF front-end circuit provided by an embodiment;

[0017] Figure 4 For Figure 3 Schematic diagram when the power supply module of the RF front-end circuit shown in

[0018] Figure 5 For Figure 3 Schematic diagram when the power supply module of the RF front-end circuit shown in

[0019] Figure 6 Schematic diagram of the frame structure of the first RF signal provided by an embodiment of the present application;

[0020] Figure 7Schematic diagram of symbols provided by an embodiment of the present application;

[0021] Figure 8 Circuit schematic diagram of a power supply module provided by an embodiment of the present application;

[0022] Figure 9 is Figure 8 Schematic diagram of the power supply module shown in the second state;

[0023] Figure 10 is Figure 8 Equivalent schematic diagram of the power supply module in the first state in;

[0024] Figure 11 Schematic diagram of a power supply module provided by another embodiment of the present application;

[0025] Figure 12 is Figure 11 Schematic diagram of the power supply module shown in the first state in;

[0026] Figure 13 is Figure 11 Schematic diagram of the power supply module shown in the second state;

[0027] Figure 14 Schematic diagram of a power supply module provided by another embodiment of the present application;

[0028] Figure 15 is Figure 14 Schematic diagram of the power supply module shown in the first state in;

[0029] Figure 16 is Figure 14 Schematic diagram of the power supply module shown in the second state;

[0030] Figure 17 Duration table of the conventional cyclic redundancy prefix time period of 5G communication in an embodiment;

[0031] Figure 18 Schematic diagram of a radio frequency front-end circuit provided by another embodiment of the present application.

[0032] Description of main component numbers:

[0033] Electronic device 1, radio frequency transceiver device 10, middle frame 30, battery 40, display screen 50, rear cover 60;

[0034] Radio frequency front-end circuit 11, radiator 12, radio frequency transceiver 110, power amplifier 120, power supply module 130, second PMIC 140;

[0035] Main electron supply module 131, first PMIC 1311, internal resistance R, output terminal 131a, first capacitor C1, second capacitor C2;

[0036] Auxiliary electron supply module 132, first current source 1321, second current source 1322, pre-charger 1323;

[0037] Switching switch sub-module 133, switching switch 1331, common terminal 133a, first connection terminal 133b, second connection terminal 133c, first switch 1332, second switch 1333;

[0038] Frame 70, sub-frame 710, time slot 711, symbol 7111, redundant prefix time period 711a, key information time period 711b. Specific implementation mode

[0039] Next, the technical solution of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a 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 efforts shall fall within the protection scope of the present application.

[0040] In the present application, referring to "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The phrase appears at various positions in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment that is mutually exclusive with 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.

[0041] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than 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: a component or device including one or more components is not limited to the one or more components listed, but optionally further includes one or more components that are not listed but are inherent in the product shown, or one or more components that should be possessed based on the described function.

[0042] An embodiment of the present application provides an electronic device 1. The electronic device 1 includes, but is not limited to, devices capable of receiving and transmitting electromagnetic wave signals such as mobile phones, telephones, televisions, tablet computers (Pads), personal computers, laptop computers (Personal Computers, PCs), vehicle-mounted devices, earphones, watches, wearable devices, etc. In the schematic diagram of the embodiment of the present application, the electronic device 1 is taken as an example of a mobile phone for illustration. It can be understood that it should not be construed as a limitation on the electronic device 1 provided by the embodiment of the present application. The electronic device 1 provided by the embodiment of the present application will be introduced.

[0043] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic diagram of the electronic device provided by an embodiment of the present application; Figure 2 is a circuit block diagram of the radio frequency transceiver device in the electronic device shown in an embodiment Figure 1 . The electronic device 1 includes a radio frequency transceiver device 10. The radio frequency transceiver device 10 is used to transmit electromagnetic wave signals in a target frequency band. In one embodiment, the radio frequency transceiver device 10 is also used to receive electromagnetic wave signals in the target frequency band. In this way, the radio frequency transceiver device 10 can implement the communication function in the target frequency band.

[0044] The target frequency band can be, but is not limited to, frequency bands of communication standards such as 2G, or 3G, or 4G, or 5G, or 6G, etc. For example, the target frequency band can be, but is not limited to, low frequency bands (Low Band, LB), or middle frequency bands (Middle Band, MB), or high frequency bands (High Band, HB), etc.

[0045] In one embodiment, the electronic device 1 further includes a middle frame 30, a display screen 50 and a rear cover 60. The display screen 50 is disposed on one side of the middle frame 30. The display screen 50 is a component for implementing the display function in the electronic device 1. The display screen 50 can be, but is not limited to, a screen with a touch function or a screen without a touch function, and the present application does not make a limitation on this. The rear cover 60 is disposed on the other side of the middle frame 30. In other words, the rear cover 60 and the display screen 50 are respectively disposed on two opposite sides of the middle frame 30. When the electronic device 1 further includes a battery, the rear cover 60 is also referred to as a battery cover. The material of the rear cover 60 can be metal or non-metal, and no limitation is made in this embodiment.

[0046] It can be understood that the introduction of the electronic device 1 provided by the embodiment of the present application is only an introduction to an application environment of the radio frequency transceiver device 10. It should not be construed as a limitation on the radio frequency transceiver device 10 provided by the embodiment of the present application. Next, the radio frequency transceiver device 10 provided by the embodiment of the present application will be introduced in detail.

[0047] Specifically, please refer to Figure 2 , the radio frequency transceiver device 10 includes a radiator 12 and a radio frequency front-end circuit 11. The radio frequency front-end circuit 11 is electrically connected to the radiator 12. Specifically, when the radio frequency front-end circuit 11 includes a power amplifier 120, the power amplifier 120 of the radio frequency front-end circuit 11 is electrically connected to the radiator 12. This will be described in detail later in combination with the specific structure of the radio frequency front-end circuit 11.

[0048] The radiator 12 can be a Laser Direct Structuring (LDS) radiator, or a Flexible Printed Circuit (FPC) radiator, or a PrintDirect Structuring (PDS) radiator, or a metal stub radiator. When the radio frequency transceiver device 10 is applied to the electronic device 1, the radiator 12 can be a Mechanical Design Antenna (MDA) radiator using the metal insert design of the electronic device 1 itself. For example, the radiator 12 can be an antenna radiator designed using the plastic and metal middle frame 30 of the electronic device 1. In addition, the radiator 12 can also be a metal frame radiator designed by the metal middle frame 30.

[0049] Next, a detailed introduction to the radio frequency front-end circuit 11 provided by the embodiments of the present application will be given.

[0050] Please refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 is a schematic diagram of a radio frequency front-end circuit provided by an embodiment; Figure 4 is Figure 3 a schematic diagram of the power supply module of the radio frequency front-end circuit shown in Figure 5 is Figure 3Schematic diagram of the power supply module of the RF front-end circuit shown in the figure being in the second state. In this embodiment, the RF front-end circuit 11 includes a radio frequency transceiver 110, a power amplifier 120, and a power supply module 130. The radio frequency transceiver 110 is used to output a first radio frequency signal. Among them, the first radio frequency signal includes a plurality of symbols. The power amplifier 120 is electrically connected to the radio frequency transceiver 110 and is used to amplify the power of the first radio frequency signal to obtain a second radio frequency signal. The power supply module 130 includes a main power supply sub-module 131 and an auxiliary power supply sub-module 132. The power supply module 130 has a first state in which the main power supply sub-module 131 independently outputs a first voltage as the target power supply voltage. The power supply module 130 also has a second state in which the main power supply sub-module 131 and the auxiliary power supply sub-module 132 cooperate to output a second voltage as the target power supply voltage. The voltage value of the second voltage is greater than the voltage value of the first voltage. The target power supply voltage is used to supply power to the power amplifier 120. The radio frequency transceiver 110 issues a control signal according to the actual voltage required by the symbol to control the power supply module 130 to be in the first state or the second state, so that the target power supply voltage matches the actual voltage.

[0051] The radio frequency transceiver 110 is also referred to as a modem or a transceiver. In one embodiment, the radio frequency transceiver 110 is used to output a radio frequency signal; and, the radio frequency transceiver 110 is also used to receive a radio frequency signal. For the convenience of description, the radio frequency signal output by the radio frequency transceiver 110 is named the first radio frequency signal.

[0052] The first radio frequency signal includes a plurality of symbols. Specifically, please refer to Figure 6 , Figure 6 which is a schematic diagram of the frame structure of the first radio frequency signal provided by an embodiment of the present application. The first radio frequency signal includes multiple frames of signals. One frame includes multiple subframes, each subframe includes multiple time slots, and each time slot includes multiple symbols. In one embodiment, one frame includes ten subframes, and one subframe includes M time slots, where, subframe represents a subframe, μ is a newly defined parameter in New Radio (NR) communication, which determines the subcarrier spacing. According to different values of μ, the number of time slots in each subframe will be different; N represents the number of time slots in each subframe, and the relationship with μ is N = 2^μ. One time slot includes fourteen symbols. It can be seen that the first radio frequency signal includes a plurality of symbols. For the convenience of description, the frame is labeled as 70, the subframe is labeled as 71, the time slot is labeled as 711, and the symbol is labeled as 7111.

[0053] The first radio frequency signal includes a plurality of symbols. In one implementation, the values of the target supply voltages corresponding to each symbol may be different, and there may even be a large difference. For example, in one scenario, the target supply voltage corresponding to the symbol is small; while in another scenario, the target supply voltage corresponding to the symbol is large. Or, in the same scenario, some symbols have a small corresponding target supply voltage, and some symbols have a large corresponding target supply voltage. Specifically, during the generation of the first radio frequency signal, the electronic circuit of the radio frequency transceiver 110 uses a specific voltage level or variation to modulate the carrier signal to represent different symbols. When the symbols are different, the corresponding voltage level or variation is different.

[0054] The power amplifier 120 (PA) is electrically connected to the radio frequency transceiver 110. The power amplifier 120 is configured to receive the first radio frequency signal and amplify the power of the first radio frequency signal to obtain a second radio frequency signal. Wherein, the power of the second radio frequency signal is greater than the power of the first radio frequency signal. When the radio frequency front-end circuit 11 is applied to the radio frequency transceiver device 10, the power amplifier 120 is electrically connected to the radiator 12. The radiator 12 receives the second radio frequency signal output by the power amplifier 120 and emits an electromagnetic wave signal in the target frequency band according to the second radio frequency signal. The power amplifier 120 is used to amplify the power of the first radio frequency signal to obtain the second radio frequency signal. Therefore, when the radio frequency front-end circuit 11 includes the power amplifier 120, the power of the radio frequency signal output by the radio frequency front-end circuit 11 (i.e., the second radio frequency signal) is large, which is beneficial for the radio frequency transceiver device 10 to which the radio frequency front-end circuit 11 is applied to communicate over a long distance.

[0055] The power supply module 130 is electrically connected to the radio frequency transceiver 110 to receive the control signal output by the radio frequency transceiver 110. The power supply module 130 is also electrically connected to the power amplifier 120. The power supply module 130 is configured to output a target supply voltage to the power amplifier 120 under the control of the control signal.

[0056] The power supply module 130 includes an auxiliary power supply sub-module 132, which is also referred to as an Auxiliary Current Path. When the main power supply sub-module 131 is operating and the auxiliary power supply sub-module 132 is not operating, the power supply module 130 outputs a first voltage. For ease of description, the state in which the main power supply sub-module 131 of the power supply module 130 is operating and the auxiliary power supply sub-module 132 is not operating is referred to as the power supply module 130 being in a first state. In other words, when the power supply module 130 is in the first state, the power supply module 130 outputs a first voltage.

[0057] When the auxiliary power supply sub-module 132 is operating and the main power supply sub-module 131 is not operating, the power supply module 130 outputs a second voltage; or when the auxiliary power supply sub-module 132 cooperates with the main power supply sub-module 131, the power supply module 130 outputs a second voltage. For ease of description, the state in which the power supply module 130 outputs a second voltage is referred to as the power supply module 130 being in a second state. In other words, when the power supply module 130 is in the second state, the power supply module 130 outputs a second voltage.

[0058] In one embodiment, the voltage value of the first voltage is less than or equal to the threshold voltage, and the voltage value of the second voltage is greater than the threshold voltage. Thus, it can be seen that the voltage value of the second voltage is greater than the voltage value of the first voltage.

[0059] In one embodiment, when using the first voltage as the target supply voltage to supply power to the power amplifier 120, for symbols with different required actual voltages, the voltage value of the first voltage is different. Correspondingly, when using the second voltage as the target supply voltage to supply power to the power amplifier 120, for symbols with different required actual voltages, the voltage value of the second voltage is different.

[0060] The radio frequency transceiver 110 emits a control signal. In one embodiment, the control signal carries information about the actual voltage required for the symbol. In another embodiment, in addition to carrying information about the actual voltage required for the symbol, the control signal also carries relevant parameters. The control signal is used to control whether the power supply module 130 is in the first state or the second state according to the actual voltage required for the symbol. For example, when the actual voltage required for the symbol is less than or equal to the threshold voltage, the control signal emitted by the radio frequency transceiver 110 controls the power supply module 130 to be in the first state; when the power supply module 130 is in the first state, the power supply module 130 outputs a first voltage as the target supply voltage. When the actual voltage required for the symbol is greater than the threshold voltage, the control signal emitted by the radio frequency transceiver 110 controls the power supply module 130 to be in the second state. When the power supply module 130 is in the second state, the power supply module 130 outputs a second voltage as the target supply voltage.

[0061] In one embodiment, the radio frequency transceiver 110 is electrically connected to the power supply module 130 to output the control signal to the power supply module 130. In one embodiment, the interface through which the radio frequency transceiver 110 is connected to the power supply module 130 can be, but is not limited to, a Mobile Industry Processor Interface (MIPI). Correspondingly, when the interface through which the radio frequency transceiver 110 is connected to the power supply module 130 is MIPI, the control signal is an instruction that complies with the MIPI protocol.

[0062] In one embodiment, the target supply voltage matching the actual voltage generally means that the target supply voltage is equal to the actual voltage.

[0063] In summary, for the radio frequency front - end circuit 11 provided by the embodiment of the present application, the power - supply module 130 includes a main power - supply sub - module 131 and an auxiliary power - supply sub - module 132. Therefore, the power - supply module 130 has a first state of outputting a first voltage as the target power - supply voltage, and the power - supply module 130 also has a second state of outputting a second voltage as the target power - supply voltage. The voltage value of the second voltage is greater than the voltage value of the first voltage. The radio - frequency transceiver 110 issues a control signal according to the actual voltage required by the symbol, and the control signal controls the power - supply module 130 to be in the first state or the second state, so that the target power - supply voltage matches the actual voltage. Thus, it can be seen that the radio - frequency front - end circuit 11 provided by the embodiment of the present application can dynamically adjust the target power - supply voltage output by the power - supply module 130 according to the target power - supply voltage required by each symbol. Therefore, the target power - supply voltage output by the power - supply module 130 matches the actual voltage required by the symbol, so that the power amplifier 120 can obtain higher efficiency and optimize the power consumption of the power amplifier 120. Therefore, the radio - frequency front - end circuit 11, the radio - frequency transceiver device 10 to which the radio - frequency front - end circuit 11 is applied, and the electronic device 1 provided by the embodiment of the present application have higher efficiency.

[0064] Please refer to again Figure 6 and Figure 7 , Figure 7 is a schematic diagram of a symbol provided by an embodiment of the present application. In one embodiment, the symbol includes a cyclic redundancy prefix time period and a key - information time period arranged in sequence in the time domain. When the second voltage is used as the target power - supply voltage, the control signal is used to control the power - supply module 130 to output a second voltage that matches the actual voltage according to the actual voltage required by the key - information time period within the same symbol 7111 during the cyclic redundancy prefix time period of each symbol. In Figure 7 , the cyclic redundancy prefix time period is labeled as 711a, and the key - information time period is labeled as 711b.

[0065] The symbol includes a cyclic redundancy prefix (Cyclic prefix) time period and a key - information time period arranged in sequence in the time domain. The redundancy time period has cyclic redundancy prefix information, and the key time period has key information.

[0066] For example, after the current symbol ends, the power - supply module 130 stops supplying power to the power amplifier 120. The radio - frequency transceiver 110 provides the key information of the next symbol, and the control signal issued by the radio - frequency transceiver 110 controls the power - supply module 130 to output the second voltage as the target power - supply voltage during the redundancy time period of each symbol.

[0067] When the second voltage is used as the target supply voltage, the control signal is used to control the power supply module 130 to output a second voltage matching the actual voltage according to the actual voltage required during the critical information period within the same symbol during the cyclic redundancy prefix period of each symbol, so that the second voltage output by the power supply module 130 matches the actual voltage required during the critical information period of the symbol. As a result, higher efficiency can be obtained, and the power consumption of the power amplifier 120 is optimized.

[0068] In addition, for the radio frequency front-end circuit 11 provided by the embodiment of the present application, the second voltage output by the power supply module 130 is controlled according to the actual voltage required during the critical information period during the redundancy period before the critical information period of the same symbol, so as to ensure that a second voltage matching the actual voltage required during the critical information period can be output during the critical information period, thereby ensuring the linearity and reliability of the power amplifier 120.

[0069] For example, if the actual voltage required for the Kth symbol of the first radio frequency signal is less than or equal to the threshold voltage, the control signal controls the power supply module 130 to output a first voltage as the target supply voltage. Here, K is a positive integer. When the actual voltage required for the (K + 1)th symbol is greater than the threshold voltage, the control signal controls the power supply module 130 to output a second voltage as the target supply voltage. Since the second voltage is greater than the first voltage, therefore, compared with the Kth symbol, the target supply voltage output by the power supply module 130 is increased during the (K + 1)th symbol. Further, the control signal controls the power supply module 130 to output a second voltage as the target supply voltage during the redundancy period of the (K + 1)th symbol, so as to ensure that a second voltage matching the actual voltage required during the critical information period of the (K + 1)th symbol can be output, thereby ensuring the linearity and reliability of the power amplifier 120.

[0070] Please refer to Figure 3 、 Figure 8 、and Figure 9 , Figure 8 which is a schematic circuit diagram of the power supply module provided by an embodiment of the present application; Figure 9 is Figure 8Schematic diagram of the power supply module shown in the second state. In this embodiment, the main power supply sub-module 131 includes a first PMIC 1131 and a first capacitor C1. The first PMIC 1131 has an output terminal 131a, and the output terminal 131a is electrically connected to the power amplifier 120. One end of the first capacitor C1 is electrically connected to the output terminal 131a, and the other end of the first capacitor C1 is grounded. When the power supply module 130 is in the first state, the output terminal 131a outputs the first voltage. The auxiliary power supply sub-module 132 includes a first current source 1321. When the power supply module 130 is in the second state, the first current source 1321 is electrically connected to the output terminal 131a, and the first current source 1321 is used to charge the first capacitor C1 so that the output terminal 131a outputs the second voltage.

[0071] The meaning of PMIC is "Power Module Integrated Circuit (PMIC)". In one embodiment, the first PMIC 1131 is used to output a power supply voltage, and the first capacitor C1 is electrically connected to the output terminal 131a of the first PMIC 1131 to eliminate the ripple of the power supply voltage to obtain the first voltage. Specifically, limited by the process of the PMIC, the power supply voltage output by the output terminal 131a of the first PMIC 1131 may have ripple. In the radio frequency front-end circuit 11 provided by the embodiment of the present application, the main power supply sub-module 131 further includes a first capacitor C1, and the first capacitor C1 is electrically connected to the output terminal 131a. The first capacitor C1 is used to eliminate the ripple of the power supply voltage to obtain the first voltage, so that the quality of the first voltage output by the output terminal 131a is relatively high, ensuring the stability of the voltage output by the main power supply sub-module 131.

[0072] In this embodiment, the first PMIC 1131 has an internal resistance, which is marked as R in the figure.

[0073] When the power supply module 130 is in the first state, the main power supply sub-module 131 works, and the auxiliary power supply sub-module 132 does not work. Therefore, when the power supply module 130 is in the first state, the output terminal 131a of the first PMIC 1131 in the main power supply sub-module 131 outputs the first voltage to the power amplifier 120.

[0074] The auxiliary power supply module 132 includes a first current source 1321. When the power supply module 130 is in the second state, the first current source 1321 is electrically connected to the output terminal 131a, and the first current source 1321 charges the first capacitor C1. Therefore, the output terminal 131a outputs a second voltage. Specifically, the output terminal 131a is electrically connected to the power amplifier 120 to output the second voltage to the power amplifier 120.

[0075] It can be seen that the main power supply module 131 and the auxiliary power supply module 132 of the radio frequency front-end circuit 11 provided by the embodiment of the present application can enable the power supply module 130 to output a first voltage in the first state and a second voltage in the second state. In addition, the circuit structures of the main power supply module 131 and the auxiliary power supply module 132 are simple and easy to implement.

[0076] Please further refer to Figure 8 and Figure 9 , the auxiliary power supply module 132 further includes a second current source 1322. The second current source 1322 is a variable current source. One end of the second current source 1322 is electrically connected to the output terminal 131a, and the other end is grounded. When the power supply module 130 is in the second state: the second current source 1322 is equivalent to an open circuit to the ground, and the first current source 1321 charges the first capacitor C1.

[0077] In this embodiment, the auxiliary power supply module 132 further includes a second current source 1322. One end of the second current source 1322 is electrically connected to the output terminal 131a, and the other end is grounded. When the power supply module 130 is in the second state, the second current source 1322 is equivalent to an open circuit to the ground under the control of a regulation signal. For example, when the power supply module 130 is in the second state, under the control of the regulation signal, the resistance of the second current source 1322 is greater than or equal to a preset resistance value. Therefore, the second current source 1322 is equivalent to an open circuit to the ground, and the first current source 1321 cannot charge the second current source 1322. The first current source 1321 charges the first capacitor C1. Thus, when the power supply module 130 is in the second state, the main power supply module 131 and the auxiliary power supply module 132 act together to make the output terminal 131a output a second voltage.

[0078] It can be seen that the main power supply module 131 and the auxiliary power supply module 132 of the radio frequency front-end circuit 11 provided by the embodiment of the present application can output a second voltage in the second state, and the circuit structure of the auxiliary power supply module 132 is simple and easy to implement.

[0079] Please refer toFigure 8 and Figure 10 , Figure 10 is Figure 8 the equivalent schematic diagram when the power supply module in [[ ]] is in the first state. Further, when the power supply module 130 is in the first state: the first current source 1321 is equivalent to being open-circuited with the first capacitor C1, and the first current source 1321 charges the second current source 1322.

[0080] When the power supply module 130 is in the first state, the first current source 1321 in the auxiliary power supply sub-module 132 is equivalent to being open-circuited with the first capacitor C1, and the first current source 1321 charges the second current source 1322.

[0081] It can be seen that the auxiliary power supply sub-module 132 provided by the embodiment of the present application can cooperate with the main power supply sub-module 131, so that when the power supply module 130 is in the first state, it outputs a first voltage, and the structure is simple and easy to implement.

[0082] Please refer to Figure 11 , Figure 12 and Figure 13 , Figure 11 which is the schematic diagram of the power supply module provided by another embodiment of the present application; Figure 12 is Figure 11 the schematic diagram when the power supply module shown in [[ ]] is in the first state; Figure 13 is Figure 11 the schematic diagram when the power supply module shown in [[ ]] is in the second state. The main power supply sub-module 131 is used to output a first voltage, and the auxiliary power supply sub-module 132 is used to output a second voltage. The power supply module 130 further includes a switching switch sub-module 133, and the switching switch sub-module 133 is electrically connected to the main power supply sub-module 131 and is also electrically connected to the auxiliary power supply sub-module 132. The switching switch sub-module 133 is used to switch the output voltage of one of the auxiliary power supply sub-module 132 and the main power supply sub-module 131 as the target power supply voltage.

[0083] In the embodiment, the main power supply sub-module 131 is used to output a first voltage, the auxiliary power supply sub-module 132 is used to output a second voltage, and the switching switch sub-module 133 is used to use the output voltage of one of the auxiliary power supply sub-module 132 and the main power supply sub-module 131 as the target output voltage. Specifically, in this embodiment, the main power supply sub-module 131 and the auxiliary power supply sub-module 132 cannot work simultaneously. When the main power supply sub-module 131 works, the auxiliary power supply sub-module 132 does not work; when the auxiliary power supply sub-module 132 works, the main power supply sub-module 131 does not work.

[0084] Specifically, under the action of the switching switch sub-module 133, when the main power supply sub-module 131 is electrically connected to the power amplifier 120, the first voltage output by the main power supply sub-module 131 serves as the target power supply voltage; under the action of the switching switch sub-module 133, when the auxiliary working sub-circuit is electrically connected to the power amplifier 120, the first voltage output by the auxiliary power supply sub-module 132 serves as the target power supply voltage.

[0085] In an embodiment, when the actual voltage required by the symbol is less than or equal to the threshold voltage, the control signal controls the switching switch sub-module 133 to switch or maintain the electrical connection of the main power supply sub-module 131 to the power amplifier 120, and the first voltage output by the main power supply sub-module 131 is the target power supply voltage. When the actual voltage value required by the symbol is greater than the threshold voltage, the control signal controls the switching switch sub-module 133 to switch or maintain the electrical connection of the auxiliary power supply sub-module 132 to the power amplifier 120, and the second voltage output by the auxiliary power supply sub-module 132 is the target power supply voltage.

[0086] It can be seen that the main power supply sub-module 131 of the power supply module 130 in the radio frequency front-end circuit 11 provided by the embodiment of the present application outputs a first voltage, and the auxiliary power supply sub-module 132 outputs a second voltage. The power supply module 130 further includes a switching switch sub-module 133. The switching switch sub-module 133 is electrically connected to the main power supply sub-module 131 and is also electrically connected to the auxiliary power supply sub-module 132. The switching switch sub-module 133 is used to switch the output voltage of one of the auxiliary power supply sub-module 132 and the main power supply sub-module 131 as the target power supply voltage. Therefore, the power supply module 130 can output the first voltage in the first state and output the second voltage in the second state. In addition, the circuit structures of the main power supply sub-module 131 and the auxiliary power supply sub-module 132 are simple and easy to implement.

[0087] Specifically, in an embodiment, when the actual voltage required by the symbol is greater than the threshold voltage, the control signal is used to control the switching switch sub-module 133 to switch or maintain the auxiliary power supply sub-module 132 to output the second voltage. When the actual voltage required by the symbol is less than or equal to the threshold voltage, the control signal is used to control the main power supply sub-module 131 to output the first voltage.

[0088] When the actual voltage required for the symbol is greater than the threshold voltage, the first voltage provided by the main power supply module 131 cannot meet the actual voltage required for the symbol, while the auxiliary power supply module 132 can meet the actual voltage required for the symbol. Therefore, when the actual voltage required for the symbol is greater than the threshold voltage, the control signal is used to control the switching switch sub-module 133 to switch or maintain the auxiliary power supply module 132 to output the second voltage as the target power supply voltage to match the actual voltage required for the symbol.

[0089] When the actual voltage required for the symbol is less than or equal to the threshold voltage, the first voltage provided by the main power supply module 131 can meet the actual voltage required for the symbol. Therefore, the control signal is used to control the main power supply module 131 to output the first voltage as the target power supply voltage to match the actual voltage required for the symbol.

[0090] For the radio frequency front-end circuit 11 provided by the embodiment of the present application, the control signal controls the switching switch sub-module 133 according to the actual voltage required for the symbol, so that the main power supply module 131 outputs the first voltage as the target power supply voltage or controls the auxiliary power supply module 132 to output the second voltage as the target power supply voltage to match the actual voltage required for the symbol. Thereby, higher efficiency can be obtained, and the power consumption of the power amplifier 120 is optimized.

[0091] Further, the auxiliary power supply module 132 includes a pre-charger 1323 (Pre-Charger) and a second capacitor C2. One end of the second capacitor C2 is electrically connected to the pre-charger 1323, the other end of the second capacitor C2 is grounded, and the pre-charger 1323 is used to charge the second capacitor C2 to the second voltage.

[0092] Since the duration of each symbol is short, therefore, the difficulty of the solution (SPT solution, or SPT technology) of the radio frequency front-end circuit 11 provided by the embodiment of the present application lies in: within the duration of each symbol, output the target power supply voltage that matches the actual voltage according to the actual voltage required for each symbol.

[0093] The radio frequency front-end circuit 11 provided by the embodiment of the present application, the power supply module 130 includes an auxiliary power supply sub-module 132, and the auxiliary power supply sub-module 132 pre-charges the second capacitor C2 (also referred to as the auxiliary capacitor) to the second voltage. In a scenario where there is a demand for large current and large voltage, the auxiliary power supply sub-module 132 is electrically connected to the power amplifier 120 through the switching switch 1331, and the main power supply sub-module 131 is disconnected from the power amplifier 120. The already charged second capacitor C2 can directly serve as an output capacitor to supply power to the power amplifier 120. Therefore, the radio frequency front-end circuit 11 provided by the embodiment of the present application can raise the voltage output to the power amplifier 120 to the target supply voltage that matches the actual voltage required by the symbol within an extremely short time.

[0094] The amplitude power supply sub-module provided by the embodiment of the present application includes a pre-charger 1323 and a second capacitor C2. The pre-charger is used to charge the second capacitor C2 to the second voltage, and can solve the problem of outputting a large target supply voltage that matches the actual voltage within a relatively short duration of the symbol.

[0095] Please continue to refer to Figures 11 to 13 , in this embodiment, the switching switch sub-module 133 includes a switching switch 1331. The switching switch 1331 has a common terminal 133a, a first connection terminal 133b, and a second connection terminal 133c. The common terminal 133a is electrically connected to the power amplifier 120. The first connection terminal 133b is electrically connected to the main power supply sub-module 131. The second connection terminal 133c is electrically connected to the auxiliary power supply sub-module 132. The control signal is used to control the first connection terminal 133b to be electrically connected to the common terminal 133a according to the actual voltage required by the symbol, so that the power supply module 130 is in the first state; and the control signal is also used to control the second connection terminal 133c to be electrically connected to the common terminal 133a according to the actual voltage required by the symbol, so that the power supply module 130 is in the second state.

[0096] The common terminal 133a of the switching switch 1331 can be electrically connected to one of the first connection terminal 133b and the second connection terminal 133c. When the common terminal 133a is electrically connected to the first connection terminal 133b, the main power supply sub-module 131 is electrically connected to the power amplifier 120. When the common terminal 133a is electrically connected to the second connection terminal 133c, the auxiliary power supply sub-module 132 is electrically connected to the power amplifier 120.

[0097] When the main power supply module 131 includes a first PMIC 1131 and the first PMIC 1131 has an output terminal 131a, the common terminal 133a is electrically connected to the output terminal 131a, and the output terminal 131a is electrically connected to the power amplifier 120. In other words, when the main power supply module 131 includes a first PMIC 1131 and the first PMIC 1131 has an output terminal 131a, the common terminal 133a is electrically connected to the power amplifier 120 through the output terminal 131a.

[0098] The control signal is used to control the first connection terminal 133b to be electrically connected to the common terminal 133a according to the actual voltage required by the symbol, so that the power supply module 130 is in the first state; and the control signal is also used to control the second connection terminal 133c to be electrically connected to the common terminal 133a according to the actual voltage required by the symbol, so that the power supply module 130 is in the second state. The control of the switching switch 1331 by the control signal is simple and easy.

[0099] Please refer to Figure 14 、 Figure 15 and Figure 16 , Figure 14 which is a schematic diagram of a power supply module provided by another embodiment of the present application; Figure 15 is Figure 14 a schematic diagram of the power supply module shown in Figure 16 in the first state; Figure 14 is

[0100] a schematic diagram of the power supply module shown in Figure 14 in the second state. In this embodiment, the switching switch sub-module 133 includes a first switch 1332 and a second switch 1333. One end of the first switch 1332 is electrically connected to the main power supply module 131, and the other end of the first switch 1332 is electrically connected to the power amplifier 120. One end of the second switch 1333 is electrically connected to the auxiliary power supply module 132, and the other end of the second switch 1333 is electrically connected to the power amplifier 120. The control signal is used to control the first switch 1332 to conduct and control the second switch 1333 to disconnect according to the actual voltage required by the symbol, so that the power supply module 130 is in the first state. The control signal is also used to control the first switch 1332 to disconnect and control the second switch 1333 to conduct according to the actual voltage required by the symbol, so that the power supply module 130 is in the second state.

[0100] In this embodiment, when the control signal controls the first switch 1332 to conduct and the second switch 1333 to disconnect, the main power supply sub-module 131 is electrically connected to the power amplifier 120, and the auxiliary power supply sub-module 132 is disconnected from the power amplifier 120. The first voltage output by the main power supply sub-module 131 is used as the target power supply voltage to supply power to the power amplifier 120.

[0101] When the control signal controls the first switch 1332 to disconnect and the second switch 1333 to conduct, the main power supply sub-module 131 is disconnected from the power amplifier 120, and the auxiliary power supply sub-module 132 is electrically connected to the power amplifier 120. The second voltage output by the auxiliary power amplifier 120 is used as the target power supply voltage to supply power to the power amplifier 120.

[0102] In this embodiment, the switching switch sub-module 133 includes a first switch 1332 and a second switch 1333. One end of the first switch 1332 is electrically connected to the main power supply sub-module 131, and the other end of the first switch 1332 is electrically connected to the power amplifier 120. One end of the second switch 1333 is electrically connected to the auxiliary power supply sub-module 132, and the other end of the second switch 1333 is electrically connected to the power amplifier 120. It can be seen that the structure of the switching switch sub-module 133 provided in the embodiment of the present application is simple and easy to implement.

[0103] Please refer to Figure 17 , Figure 17 is a duration table of the cyclic redundancy prefix time period in a conventional 5G communication for an embodiment. In this table, subcarriers (SCS) of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz are taken as examples for illustration. The duration of the cyclic redundancy prefix time period is marked with CP, and the unit is microseconds (μs). The duration of the cyclic redundancy prefix time period of the long symbol of the same subcarrier is different from that of other symbols. The duration of the cyclic redundancy prefix time period of the long symbol of different subcarriers is also different. The duration of the cyclic redundancy prefix time period of other symbols of different subcarriers is also different. For example, in the actual network communication scenario applied by the radio frequency front-end circuit 11, the shortest duration of the cyclic redundancy prefix time period occurs when the subcarrier SCS = 30 kHz, and the duration is 2.34 μs.

[0104] When the power supply module 130 supplies power according to the actual voltage required by the symbol, the actual voltages of different symbols are different. Especially when the actual voltage required by the symbol is large, the target power supply voltage output by the power supply module 130 needs to be charged and discharged at a fast speed.

[0105] To facilitate the introduction of the technical effects of the radio frequency front-end circuit 11 provided by the embodiments of the present application, the radio frequency front-end circuit 11 provided in the related art will be introduced first. It can be understood that the radio frequency front-end circuit 11 in the related art should not be understood as the prior art. The radio frequency front-end circuit 11 in the related art includes a power supply module 130, and the power supply module 130 includes a main power supply sub-module 131. The main power supply sub-module 131 includes a first PMIC 1131 and a first capacitor C1. The power supply module 130 in the related art does not include an auxiliary power supply sub-module 132. The output terminal 131a of the first PMIC 1131 is electrically connected to the first capacitor C1. The current I when the power supply module 130 in the related art supplies power to the power amplifier 120 is calculated as follows. Specifically, the charging and discharging of the first capacitor C1 in the related art needs to satisfy formula (1).

[0106] I = C * (dV / dt) (1).

[0107] Wherein, I represents the current value of the instantaneous charging current when the power supply module 130 in the related art supplies power to the power amplifier 120, C represents the capacitance value of the first capacitor C1, and dV / dt represents the voltage change amount of the first capacitor C1 per unit time.

[0108] It can be seen that when dV / dt is constant, I and C are proportional in the related art. Assume that within a time of 2 microseconds (μs), the voltage changes from 0V to 4V, and assume that the capacitance value of the first capacitor C1 is 2 microfarads (μF). Then, according to formula (1), the current value I of the instantaneous charging current is 4A. Such a large instantaneous charging current of 4A is basically impossible to achieve for the battery of the electronic device 1 and the first PMIC 1131 in the related art.

[0109] The RF front-end circuit 11 provided by the embodiment of the present application, the power supply module 130 not only includes the main power supply sub-module 131, but also includes the auxiliary power supply sub-module 132. The auxiliary power supply sub-module 132 cooperates with the main power supply sub-module 131 to output a second voltage, wherein the voltage value of the second voltage is greater than the voltage value of the first sub-voltage output by the main power supply sub-module 131 alone. It can be seen that the power supply module 130 of the RF front-end circuit 11 provided by the embodiment of the present application can output a larger voltage value. As can be seen from formula (1), when the voltage value of the power supply module 130 becomes larger, the current value of the instantaneous charging current when the power supply module 130 supplies power to the power amplifier 120 is larger. It can be seen that the power supply module 130 of the RF front-end module provided by the embodiment of the present application has a larger instantaneous charging current when supplying power to the power amplifier 120, so as to meet the need to charge the power amplifier 120. The instantaneous charging current output by the power supply module 130 is matched with the actual charging current required by the symbol, so that higher efficiency can be obtained, and the power consumption of the power amplifier 120 is optimized.

[0110] Further, in an embodiment, when the actual current required by the symbol is greater than a preset current value, the control signal is further used to control the power supply module 130 to output the second voltage as the voltage value of the symbol.

[0111] According to formula (1), there is a corresponding relationship between the preset current value and the threshold voltage. When the capacitance is certain, the duration of the cyclic redundancy prefix period of the symbol is certain, and the initial value of the voltage is certain, the preset current value is proportional to the threshold voltage.

[0112] As introduced above, when the actual current value required by the symbol is large, the first voltage output by the main power supply sub-module 131 cannot meet the requirement of the actual current value required by the symbol. Therefore, when the actual current required by the symbol is greater than the preset current value, the control signal is further used to control the power supply module 130 to output the second voltage as the voltage value of the symbol, so that the charging current provided by the power supply module 130 to the power amplifier 120 can meet the requirement of the actual current required by the symbol. It can be seen that the RF front-end circuit 11 provided by the embodiment of the present application can dynamically adjust the target supply voltage output by the power supply module 130 according to the actual current required by each symbol. Therefore, the target supply voltage output by the power supply module 130 is matched with the actual voltage and actual current value required by the symbol, so that higher efficiency can be obtained, and the power consumption of the power amplifier 120 is optimized.

[0113] Further, when the actual current value required by the symbol is less than or equal to the preset current value, the control signal is further used to control the power supply module 130 to output the first voltage as the voltage value of the symbol.

[0114] For example, when the subcarrier SCS = 30 kHz, the duration of the cyclic redundancy prefix period is 2.34 μs; when the subcarrier SCS = 15 kHz, the duration of the cyclic redundancy prefix period is 4.69 μs. Then, the instantaneous charging current I when the subcarrier SCS = 15 kHz is half of the instantaneous charging current I when the subcarrier SCS = 30 kHz. When the subcarrier SCS = 15 kHz, the actual current value required by the symbol is less than or equal to the threshold current threshold, then the first voltage output by the main power supply sub-module 131 can meet the requirements.

[0115] When the actual current value required by the symbol is less than or equal to the preset current value, it indicates that the first voltage can meet the requirement of the required current value. When the actual current value required by the symbol is less than or equal to the preset current value, the control signal is further used to control the power supply module 130 to output the first voltage as the voltage value of the symbol. Therefore, the first voltage output by the power supply module 130 is used as the target power supply voltage to match the actual voltage and the realized current value required by the symbol, so that higher efficiency can be obtained and the power consumption of the power amplifier 120 is optimized.

[0116] In addition, in an embodiment, according to formula (1), if the capacitance value of the first capacitor C1 decreases, it can also achieve the effect of reducing the current value of the instantaneous charging current when the power supply module 130 supplies power to the power amplifier 120.

[0117] It should be noted that as introduced above, limited by the process of the PMIC, the power supply voltage output by the output terminal 131a of the first PMIC 1131 may have ripple. The first capacitor C1 is electrically connected to the output terminal 131a of the first PMIC 1131 to eliminate the ripple of the power supply voltage to obtain the first voltage. Generally speaking, if the capacitance value of the first capacitor C1 is larger, the elimination effect on the ripple of the power supply voltage is better.

[0118] Thus, on the one hand, if the capacitance value of the first capacitor C1 is larger, the elimination effect on the ripple of the power supply voltage is better; on the other hand, if the capacitance value of the first capacitor C1 is smaller, it can achieve the effect of reducing the current value of the instantaneous charging current when the power supply module 130 supplies power to the power amplifier 120. Therefore, when selecting the capacitance value of the first capacitor C1, the above two aspects of requirements need to be considered.

[0119] Please refer toFigure 18 , Figure 18 This is a schematic diagram of a radio frequency front - end circuit provided for another embodiment of the present application. In this embodiment, the radio frequency front - end circuit 11 further includes a second PMIC 140. The second PMIC 140 is used to receive the raw voltage emitted by the battery and regulate the raw voltage signal to obtain the first voltage.

[0120] The second PMIC 140 of the radio frequency front - end circuit 11 receives the raw voltage emitted by the battery 40 and regulates the raw voltage signal to obtain the first voltage. For example, when the radio frequency front - end circuit 11 is applied to the electronic device 1, the raw voltage of the battery 40 of the electronic device 1 will change. When the battery 40 has less power, the raw voltage of the battery 40 is smaller; correspondingly, when the battery 40 has more power, the raw voltage of the battery 40 is larger. For example, when the power of the battery 40 is the first power, the raw voltage of the battery 40 is the first raw voltage; when the power of the battery 40 is the second power, the raw voltage of the battery 40 is the second raw voltage. Wherein, the first power is less than the second power, and the first raw voltage is less than the second raw voltage.

[0121] It can be seen that when the radio frequency front - end circuit 11 is applied to the electronic device 1, the raw voltage of the battery 40 of the electronic device 1 is unstable. The radio frequency front - end circuit 11 provided by the embodiment of the present application further includes a second PMIC 140. The second PMIC 140 is used to receive the raw voltage emitted by the battery 40 and regulate the raw voltage signal to obtain the first voltage, thereby ensuring the stability of the voltage provided to the main power - supplying module 131 and improving the communication effect of the radio - frequency transceiver device 10 to which the radio frequency front - end circuit 11 is applied.

[0122] In summary, for the radio frequency front - end circuit 11 provided by the embodiment of the present application, the radio - frequency transceiver 110 issues a control signal according to the actual voltage required by the symbol to control the power - supplying module 130 to be in the first state or the second state, so that the target supply voltage matches the actual voltage. This solution is also called a symbol power tracking scheme, or a symbol power tracking technology, or a symbol - based voltage optimization scheme. The radio frequency front - end circuit 11 provided by the embodiment of the present application can supply power according to the voltage required by each symbol, optimize the power consumption of the power amplifier 120, and more effectively manage and improve the efficiency of communication (such as cellular mobile communication). When the radio - frequency transceiver 110 provided by the embodiment of the present application is applied to 5G communication, it can supply power according to the voltage required by the symbols of 5G radio - frequency communication, and optimize the power consumption of the power amplifier 120 in the radio frequency front - end circuit 11.

[0123] Compared with the average power tracking (APT) power supply in the related art, the radio frequency front-end circuit 11 provided by the embodiment of the present application can make up for the disadvantage of low power supply efficiency of the average power tracking. Compared with the envelope tracking (ET) technology power supply in the related art, the radio frequency front-end circuit 11 provided by the embodiment of the present application does not require an additional envelope detection circuit. The radio frequency front-end circuit 11 provided by the embodiment of the present application can be used in both high-power and low-power scenarios and high-bandwidth and low-bandwidth scenarios.

[0124] In addition, the cost of the radio frequency front-end circuit 11 provided by the embodiment of the present application is relatively low. Specifically, compared with the envelope tracking (ET) technology, in some simple scenarios, the radio frequency front-end circuit 11 provided by the embodiment of the present application can be directly implemented on the basis of average power tracking through an algorithm without an additional path.

[0125] The above are some embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. A radio frequency front-end circuit, characterized in that: The radio frequency front end circuit comprises: A radio frequency transceiver, the radio frequency transceiver is used to output a first radio frequency signal, wherein the first radio frequency signal includes a plurality of symbols; a power amplifier, the power amplifier being electrically connected to the RF transceiver and configured to amplify the power of the first RF signal to obtain a second RF signal; and A power supply module, the power supply module comprising a main power supply submodule and an auxiliary power supply submodule, the power supply module having a first state in which the main power supply submodule alone outputs a first voltage as a target power supply voltage, and also having a second state in which the main power supply submodule and the auxiliary power supply submodule cooperate to output a second voltage as the target power supply voltage, the voltage value of the second voltage being greater than the voltage value of the first voltage, and the target power supply voltage being used to power the power amplifier; The RF transceiver sends a control signal according to the actual voltage required by the symbol to control the power supply module to be in the first state or the second state, so that the target power supply voltage matches the actual voltage.

2. The radio frequency front-end circuit according to claim 1, characterized in that: The symbol includes a cyclic redundancy prefix time period and a key information time period which are sequentially arranged in the time domain; When the second voltage is used as the target supply voltage, the control signal is used to control the power supply module to output a second voltage matching the actual voltage according to the actual voltage required in the critical information time period within the same symbol during the cyclic redundancy prefix time period of each symbol.

3. The radio frequency front-end circuit according to claim 2, characterized in that: If the actual voltage required by the Kth symbol of the first radio frequency signal is less than or equal to the threshold voltage, the control signal controls the power supply module to output the first voltage as the target power supply voltage, where K is a positive integer; When the actual voltage required by the K+1th symbol is greater than the threshold voltage, the control signal controls the power supply module to output a second voltage as the target power supply voltage.

4. The radio frequency front-end circuit according to claim 1 or 2, characterized in that: The main power supply module includes a first PMIC and a first capacitor, the first PMIC has an output end, the output end is electrically connected to the power amplifier, one end of the first capacitor is electrically connected to the output end, and the other end of the first capacitor is grounded, when the power supply module is in the first state, the output end outputs the first voltage; The auxiliary power supply submodule includes a first current source. When the power supply module is in a second state, the first current source is electrically connected to the output end. The first current source is used to charge the first capacitor so that the output end outputs the second voltage.

5. The radio frequency front-end circuit according to claim 4, characterized in that: The auxiliary power supply submodule also includes: A second current source, wherein the second current source is a variable current source, one end of the second current source is electrically connected to the output end, and the other end of the second current source is grounded; When the power supply module is in the second state: the second current source is equivalent to an open circuit to the ground, and the first current source charges the first capacitor.

6. The radio frequency front-end circuit according to claim 5, characterized in that: When the power supply module is in the first state: the first current source is equivalent to being open-circuited with the first capacitor, and the first current source charges the second current source.

7. The radio frequency front-end circuit according to claim 1 or 2, characterized in that: The main power supply submodule is used to output a first voltage, and the auxiliary power supply submodule is used to output a second voltage; The power supply module also includes a switching switch sub-module, which is electrically connected to the main power supply sub-module and also electrically connected to the auxiliary power supply sub-module. The switching switch sub-module is used to switch the output voltage of one of the auxiliary power supply sub-module and the main power supply sub-module as the target power supply voltage.

8. The radio frequency front-end circuit according to claim 7, characterized in that: When the actual voltage required by the symbol is greater than the threshold voltage, the control signal is used to control the switch submodule to switch or maintain the auxiliary power supply submodule to output the second voltage; When the actual voltage required by the symbol is less than or equal to the threshold voltage, the control signal is used to control the main power supply submodule to output the first voltage.

9. The radio frequency front-end circuit according to claim 8, characterized in that: The switch sub-module includes a switch, and the switch has: A common terminal electrically connected to the power amplifier; A first connection end, the first connection end being electrically connected to the main power supply submodule; and A second connection end, the second connection end being electrically connected to the auxiliary power supply submodule; The control signal is used to control the first connection end to be electrically connected to the common end according to the actual voltage required by the symbol, so that the power supply module is in the first state; and the control signal is also used to control the second connection end to be electrically connected to the common end according to the actual voltage required by the symbol, so that the power supply module is in the second state.

10. The radio frequency front-end circuit according to claim 8, characterized in that: The switch submodule comprises: A first switch, wherein one end of the first switch is electrically connected to the main power supply submodule, and the other end of the first switch is electrically connected to the power amplifier; a second switch, wherein one end of the second switch is electrically connected to the auxiliary power supply submodule, and the other end of the second switch is electrically connected to the power amplifier; The control signal is used to control the first switch to be turned on and the second switch to be turned off according to the actual voltage required by the symbol, so that the power supply module is in the first state; and the control signal is also used to control the first switch to be turned off and the second switch to be turned on according to the actual voltage required by the symbol, so that the power supply module is in the second state.

11. The radio frequency front-end circuit according to claim 7, characterized in that: The auxiliary power supply submodule includes a precharger and a second capacitor, one end of the second capacitor is electrically connected to the precharger, the other end of the second capacitor is grounded, and the precharger is used to charge the second capacitor to a second voltage.

12. The radio frequency front-end circuit according to claim 1, characterized in that: When the actual current required by the symbol is greater than the preset current value, the control signal is further used to control the power supply module to output the second voltage as the voltage value of the symbol.

13. The radio frequency front-end circuit according to claim 12, characterized in that: When the actual current value required by the symbol is less than or equal to the preset current value, the control signal is also used to control the power supply module to output the first voltage as the voltage value of the symbol.

14. The radio frequency front-end circuit according to claim 1, characterized in that: The radio frequency front end circuit also includes: The second PMIC is used to receive the original voltage emitted by the battery and stabilize the original voltage signal to obtain the first voltage.

15. A radio frequency transceiver, characterized in that: The radio frequency transceiver comprises: radiators; and The RF front-end circuit as described in any one of claims 1-14, wherein a power amplifier of the RF front-end circuit is electrically connected to the radiator.

16. An electronic device, characterized in that: The electronic device comprises the radio frequency transceiver as claimed in claim 15.

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