Radio frequency module and electronic equipment

Abstract

The utility model provides a radio frequency module and electronic equipment. The radio frequency module comprises a radio frequency module and a level switching module; the level switching module is electrically connected with the first level signal line, the second level signal line and the radio frequency module. The level switching module is used for switching to the first level signal line to provide a first level to the radio frequency module when the first level signal line transmits a first level signal; and when the first level signal line transmits a second level signal, switching to the second level signal line to provide a second level to the radio frequency module. According to the embodiment of the invention, the level switching module can provide the second level for the radio frequency module when the first level signal line detects the second level signal, i.e., the input voltage of the radio frequency module is adjusted to the second level, thereby providing a discharge path for the radio frequency module, and achieving the effect of forbidding the radio frequency module after shutdown. And the shutdown electric leakage phenomenon is avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of charging technology, and in particular to a radio frequency module and an electronic device. Background Art

[0002] As the functions of electronic devices become more and more abundant, the functional devices they contain are also increasing. Therefore, it is necessary to test the shutdown leakage current of electronic devices to ensure that the electronic devices work reliably. Summary of the invention

[0003] The present disclosure provides a radio frequency module and an electronic device to solve the above technical problems.

[0004] According to a first aspect of the present disclosure, a radio frequency module is provided, comprising a radio frequency module and a level switching module; the level switching module is electrically connected to a first level signal line, a second level signal line and the radio frequency module respectively;

[0005] The level switching module is used to switch to the first level signal line when the first level signal line transmits a first level signal to provide the first level to the RF module; and to switch to the second level signal line when the first level signal line transmits a second level signal to provide the second level to the RF module.

[0006] Optionally, the level switching module includes at least one switching device; the at least one switching device is used to conduct the first level signal line and the radio frequency module, or conduct the second level signal and the radio frequency module.

[0007] Optionally, the level switching module includes a first switching switch; the first end of the first switching switch is electrically connected to the first level signal line, the second end of the first switching switch is electrically connected to the second level signal line, and the third end of the first switching switch is electrically connected to the power pin of the RF module; the control end of the first switching switch is used to receive a control signal.

[0008] Optionally, the level switching module further includes a first resistor; a first end of the first resistor is electrically connected to the second level signal line, and a second end of the first resistor is electrically connected to the second end of the first switch.

[0009] Optionally, the level switching module includes a first switch and a second switch; a first end of the first switch is electrically connected to the first level signal line, a second end of the first switch is electrically connected to a power pin of the RF module, and a control end of the first switch is used to receive a first control signal;

[0010] The first end of the second switch is electrically connected to the second level signal line, the second end of the second switch is electrically connected to the power pin of the RF module, and the control end of the second switch is used to receive a second control signal.

[0011] Optionally, the level switching module further includes a second resistor; a first end of the second resistor is electrically connected to the second level signal line, and a second end of the second resistor is electrically connected to the first end of the second switch.

[0012] Optionally, the first switch is implemented by an N-type field effect transistor, and the second switch is implemented by a P-type field effect transistor.

[0013] Optionally, the RF module also includes a level sampling module, which is electrically connected to the first level signal line and the at least one switching device respectively; the level sampling module is used to collect the voltage value on the first level signal line and output a control signal matching the voltage value.

[0014] Optionally, the level sampling module includes a sampling resistor; a first end of the sampling resistor is electrically connected to the first level signal line, and a second end of the sampling resistor is electrically connected to each switch device.

[0015] Optionally, the RF module includes a level conversion unit and a RF amplifier unit; the level conversion unit is electrically connected to the RF amplifier unit; the level conversion unit is electrically connected to a power pin of the RF module;

[0016] The level conversion unit is used to output an enable signal or a disable signal according to the level signal of the power pin;

[0017] The radio frequency amplifier unit is used to output the radio frequency signal when receiving the enable signal, and stop outputting the radio frequency signal when receiving the disable signal.

[0018] Optionally, the RF module also includes an antenna module; the antenna module is electrically connected to the RF module; the antenna module is used to convert the RF signal into an electromagnetic wave signal and radiate it into space, and convert the electromagnetic wave signal into a RF signal when it is received and transmit it to the RF module.

[0019] According to a second aspect of the present disclosure, an electronic device is provided, comprising a radio frequency module as described in any one of the first aspects.

[0020] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0021] The RF module provided in this embodiment includes a RF module and a level switching module; the level switching module is electrically connected to the first level signal line, the second level signal line and the RF module respectively; the level switching module is used to switch to the first level signal line when the first level signal line transmits a first level signal to provide the first level to the RF module; and switch to the second level signal line when the first level signal line transmits a second level signal to provide the second level to the RF module. In this way, the level switching module is set in this embodiment to provide the second level to the RF module when the first level signal line detects the second level signal, that is, to adjust the input voltage of the RF module to the second level, thereby providing a discharge path to the RF module, so as to achieve the effect of disabling the RF module after shutdown, and avoid shutdown leakage.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a block diagram of a radio frequency module according to an embodiment of the present invention.

[0024] Figure 2 The present invention is a circuit diagram of a level conversion unit according to an embodiment of the present invention.

[0025] Figure 3 The present invention is a block diagram of a radio frequency module according to an embodiment of the present invention.

[0026] Figure 4 The present invention is a circuit diagram of a level switching module according to an embodiment of the present invention.

[0027] Figure 5 FIG. 4 is a circuit diagram of another level switching module according to an embodiment of the present disclosure.

[0028] Figure 6 The present invention is a circuit diagram of a level switching module according to an embodiment of the present invention.

[0029] Figure 7 This is a circuit diagram of another level switching module according to an embodiment of the present disclosure.

[0030] Figure 8 A block diagram of another radio frequency module according to an embodiment of the present disclosure.

[0031] Fig. 9 The present invention is a circuit diagram of a level sampling module according to an embodiment of the present invention.

[0032] Fig.10 The present invention is a block diagram of a radio frequency module according to an embodiment of the present invention.

[0033] Fig.11 The present invention is a block diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0035] As the functions of electronic devices become more and more abundant, the functional devices they contain are also increasing. Therefore, it is necessary to test the shutdown leakage current of electronic devices to ensure that the electronic devices work reliably.

[0036] In some test scenarios, it is determined that the RF module has leakage. Take the RF module as an example, the RF chip is QM77048B, see Figure 1 , the RF module includes a level shift unit (levelshift) and a RF amplifier unit (4G PA). The level shift unit can output a high level signal (such as VBAT) or a low level (such as GND) signal. When the level shift unit outputs a high level signal, the RF amplifier unit can be enabled; when the level shift unit outputs a low level signal, the RF amplifier unit can be disabled. When the RF amplifier unit is not set to low power mode (Low Power Model, LPM), the level shift unit will always output a high level signal at the PA_EN terminal; when the RF module is powered on again, the RF amplifier unit will be abnormally enabled, resulting in leakage.

[0037] Based on the above content, it can be known that the reason for the leakage of the RF module is that the output level signal of the level conversion unit is abnormal. Figure 2 , the level conversion unit includes switching devices P1, P2, P3, N1, N2, N3 and N4.

[0038] Under normal conditions, when a high-level signal (such as VBAT) is input to input terminal A and a low-level signal (such as GND) is input to input terminal B, a low-level signal can be detected at point C and a high-level signal can be detected at point D. At this time, the switch device P3 is in the off state and the switch device N3 is in the on state, and the output terminal PA_EN outputs a low-level signal, thereby prohibiting the RF amplifier unit from operating.

[0039] In an abnormal state, when a low-level signal is input to input terminal A and a low-level signal is input to input terminal B, a high-level signal can be detected at point C and a low-level signal can be detected at point D. At this time, the switch device P3 is in the on state and the switch device N3 is in the off state, and the output terminal PA_EN outputs a high-level signal, thereby enabling the RF amplifier unit. In this way, the RF module cannot be disabled after shutdown, resulting in leakage.

[0040] based on Figure 2 Based on the analysis of the example, the inventors of the present disclosure discovered that the reason why the above problem occurs in the level conversion unit is that the RF module discharges slowly, so that point C can still obtain the power supply voltage, causing the level conversion unit to output an abnormal enable signal.

[0041] To solve the above technical problems, the embodiments of the present disclosure provide a radio frequency module and an electronic device, the inventive concept of which is to add a level switching module; in a shutdown scenario, the level switching module establishes a discharge path for the radio frequency module, so that the voltage at the power pin of the radio frequency module can be cut off when the power is shut down, avoiding the situation that cannot be prohibited, thereby avoiding leakage.

[0042] In one example, see Figure 3 , a radio frequency module, comprising a radio frequency module 32 and a level switching module 31; the level switching module 31 is electrically connected to a first level signal line VPH, a second level signal line VPL and the radio frequency module 32 respectively;

[0043] The level switching module 31 is used to switch to the first level signal line when the first level signal line VPH transmits a first level signal. At this time, the first level signal line VPH is electrically connected to the RF module 32, and the first level can be provided to the RF module 32; and to switch to the second level signal line VPL when the first level signal line VPH transmits a second level signal. At this time, the second level signal line VPL is electrically connected to the RF module 32, and the second level can be provided to the RF module 32.

[0044] In one example, the first level signal line VPH is electrically connected to the power supply BAT, so that the power supply level, i.e., the first level signal, can be transmitted; considering that the power supply BAT may be disconnected in the shutdown scenario, the second level signal line VPH can transmit a second level signal, i.e., a low level signal, such as a ground level. The second level signal line VPL can be connected to the ground GND, so as to provide a second level signal.

[0045] In one example, the level switching module 31 may include at least one switching device; the at least one switching device is used to conduct the first level signal line and the RF module, or conduct the second level signal and the RF module, thereby providing a current path for the RF module 32.

[0046] In one example, the level switching module 31 includes a switch device. Figure 4 The level switching module 31 includes a first switching switch K. The first end of the first switching switch K is electrically connected to the first level signal line VPH, the second end of the first switching switch K is electrically connected to the second level signal line VPL, and the third end of the first switching switch K is electrically connected to the power pin Vin of the RF module 32; the control end (not shown in the figure) of the first switching switch K is used to receive a control signal.

[0047] In this example, when the first switching switch K receives the first control signal, the first switching switch K switches to the first state. At this time, the first end and the third end of the first switching switch K are electrically connected, that is, the first switching switch K can electrically connect the first level signal line VPH and the power pin Vin of the RF module 32 to provide a first level signal to the RF module 32.

[0048] In this example, when the first switch K receives the second control signal, the first switch K switches to the second state, at which time the second end and the third end of the first switch K are electrically connected, that is, the first switch K can electrically connect the second level signal line VPL and the power pin Vin of the RF module 32 to provide a second level signal to the RF module 32. The second level signal is logically opposite to the first level signal, that is, when the first level signal is a high level signal, the second level signal is a low level signal; or when the first level signal is a low level signal, the second level signal is a high level signal.

[0049] In another example, the level switching module 31 includes two switching devices. Figure 5 The level switching module 31 includes a first switch Q1 and a second switch Q2; a first end of the first switch Q1 is electrically connected to a first level signal line VPH, a second end of the first switch Q1 is electrically connected to a power pin Vin of the RF module 32, and a control end of the first switch Q1 is used to receive a first control signal;

[0050] A first end of the second switch Q2 is electrically connected to the second level signal line VPL, a second end of the second switch Q2 is electrically connected to the power pin Vin of the RF module 32, and a control end of the second switch Q2 is used to receive a second control signal.

[0051] In this example, the first switch Q1 can be implemented by an N-type field effect transistor, and the second switch Q2 can be implemented by a P-type field effect transistor. In this way, the same control signal can be input into the control end of the first switch Q1 and the second switch Q2. When the control signal is the first control signal, i.e., a high-level signal, the first switch Q1 is switched to the on state and the second switch Q2 is switched to the off state, and the first level signal line VPH can be electrically connected to the power pin Vin of the RF module 32, that is, the first level signal is provided to the RF module 32; when the control signal is the second control signal, i.e., a low-level signal, the first switch Q1 is switched to the off state and the second switch Q2 is switched to the on state, and the second level signal line VPL can be electrically connected to the power pin Vin of the RF module 32, that is, the second level signal is provided to the RF module 32.

[0052] It should be noted that the first switch Q1 and the second switch Q2 may also be implemented by other types of combinations. As long as the two switches can provide electrical levels for the RF module 32 respectively, the corresponding solution falls within the protection scope of the present disclosure.

[0053] Considering that excessive current may occur when providing a level signal to the RF module 32, the level switching module 31 may include at least one resistor to limit the current loop. Figure 4 Based on the level switching module 31 shown, see Figure 6 The level switching module 31 further includes a first resistor R1, a first end of the first resistor R1 is electrically connected to the second level signal line VPL, and a second end of the first resistor R1 is electrically connected to the second end of the first switch K. In this way, when the second level signal is provided to the RF module 32, the first resistor R1 can discharge the RF module 32 to accelerate the power consumption rate.

[0054] In another example, in Figure 5 Based on the level switching module 31 shown, see Figure 7 The level switching module 31 further includes a second resistor R2, a first end of the second resistor R2 is electrically connected to the second level signal line VPL, and a second end of the second resistor R2 is electrically connected to the first end of the second switch Q2. In this way, when the second level signal is provided to the RF module 32, the second resistor R2 can discharge the RF module 32 to accelerate the power consumption rate.

[0055] In one example, the RF module further includes a level sampling module. Figure 8, the level sampling module 33 is electrically connected to the first level signal line VPH and at least one switch device (not shown in the figure); the level sampling module 33 is used to collect the voltage value on the first level signal line VPH and output a control signal matching the above voltage value to the level switching module 31. In this way, the level switching module 31 can switch to different states according to the above control signal, and then provide an enable signal or a disable signal for the RF module 32.

[0056] In one example, the level sampling module 33 includes a sampling resistor. Fig. 9 , the first end of the sampling resistor Rs is electrically connected to the first level signal line VPH, and the second end of the sampling resistor Rs is electrically connected to each switch device. In this way, when the first level signal line VPH transmits a first level signal, the sampling resistor Rs can transmit the first level signal to the level switching module 31, so that the level switching module 31 electrically connects the first level signal line VPH to the RF module 32, thereby enabling the RF module 32; when the first level signal line VPH transmits a second level signal, the sampling resistor Rs can transmit the second level signal to the level switching module 31, so that the level switching module 31 electrically connects the second level signal line VPL to the RF module 32, thereby disabling the RF module 32.

[0057] In one example, continue to see Figure 1 The RF module 32 includes a level conversion unit and a RF amplifier unit; the level conversion unit is electrically connected to the RF amplifier unit; the level conversion unit is electrically connected to the power pin of the RF module ( Figure 2 The VBAT terminal in Figure 3 The terminals Vin in the circuit are terminals with the same function, and are both electrically connected to the input power supply level or the first level signal mentioned above; a level conversion unit is used to output an enable signal or a disable signal according to the level signal of the power pin; and a radio frequency amplifier unit is used to output a radio frequency signal when receiving the enable signal, and stop outputting the radio frequency signal when receiving the disable signal.

[0058] In one example, the RF module further includes a controller. Fig.10 , the controller 34 is electrically connected to the first level signal line VPH and the level switching module 31 respectively. The controller 34 can obtain the level signal sampled by the level sampling module, and then compare the level signal with the level threshold; when the level signal is greater than or equal to the above level threshold, the controller 34 controls the level switching module 31 to electrically connect the first level signal line VPH to the RF module 32; when the level signal is less than the above level threshold, the controller 34 controls the level switching module 31 to electrically connect the second level signal line VPL to the RF module 32.

[0059] In one example, the RF module further includes an antenna module, which is electrically connected to the RF module; the antenna module is used to convert the RF signal into an electromagnetic wave signal and radiate it into space, and convert the electromagnetic wave signal into an RF signal when it is received and transmit it to the RF module. The antenna module can be implemented by a main antenna or a diversity antenna, such as a 2.4Ghz antenna, a 5GHz antenna, etc.

[0060] So far, the RF module provided in this embodiment includes a RF module and a level switching module; the level switching module is electrically connected to the first level signal line, the second level signal line and the RF module respectively; the level switching module is used to switch to the first level signal line when the first level signal line transmits a first level signal to provide the first level to the RF module; and switch to the second level signal line when the first level signal line transmits a second level signal to provide the second level to the RF module. In this way, the level switching module is set in this embodiment to provide the second level to the RF module when the first level signal line detects the second level signal, that is, to adjust the input voltage of the RF module to the second level, thereby providing a discharge path to the RF module, so as to achieve the effect of disabling the RF module after shutdown, and avoid shutdown leakage.

[0061] Fig.11 1 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 1100 may be a smart phone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0062] Reference Fig.11 The electronic device 1100 may include one or more of the following components: a processing component 1102 , a memory 1104 , a power component 1106 , a multimedia component 1108 , an audio component 1110 , an input / output (I / O) interface 1112 , a sensor component 1114 , a communication component 1116 , and an image acquisition component 1118 .

[0063] The processing component 1102 generally controls the overall operation of the electronic device 1100, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1102 may include one or more processors 1120 to execute computer programs. In addition, the processing component 1102 may include one or more modules to facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102. In one example, the processing component 1102 can be used as a controller 34 to control the level switching module to switch states.

[0064] The memory 1104 is configured to store various types of data to support operations on the electronic device 1100. Examples of such data include computer programs for any application or method operating on the electronic device 1100, contact data, phone book data, messages, pictures, videos, etc. The memory 1104 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0065] The power supply component 1106 provides power to various components of the electronic device 1100. The power supply component 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1100. The power supply component 1106 may include a power supply chip, and the controller may communicate with the power supply chip to control the power supply chip to turn on or off the first switch, so that the battery supplies power to the mainboard circuit or does not supply power.

[0066] The multimedia component 1108 includes a screen that provides an output interface between the electronic device 1100 and the target object.

[0067] In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input information from a target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0068] The audio component 1110 is configured to output and / or input audio file information. For example, the audio component 1110 includes a microphone (MIC), and when the electronic device 1100 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive external audio file information. The received audio file information can be further stored in the memory 1104 or sent via the communication component 1116. In some embodiments, the audio component 1110 also includes a speaker for outputting audio file information.

[0069] The I / O interface 1112 provides an interface between the processing component 1102 and a peripheral interface module, which may be a keyboard, a click wheel, a button, etc.

[0070] The sensor component 1114 includes one or more sensors for providing various aspects of status assessment for the electronic device 1100. For example, the sensor component 1114 can detect the open / closed state of the electronic device 1100, the relative positioning of the components, such as the display screen and the keypad of the electronic device 1100, and the sensor component 1114 can also detect the position change of the electronic device 1100 or a component, the presence or absence of contact between the target object and the electronic device 1100, the orientation or acceleration / deceleration of the electronic device 1100, and the temperature change of the electronic device 1100. In this example, the sensor component 1114 can include a magnetic sensor, a gyroscope, and a magnetic field sensor, and can also include an inertial sensor, an image sensor, etc., wherein the magnetic field sensor includes at least one of the following: a Hall sensor, a thin film magnetoresistive sensor, and a magnetic liquid acceleration sensor.

[0071] The communication component 1116 is configured to facilitate wired or wireless communication between the electronic device 1100 and other devices. The electronic device 1100 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 1116 receives broadcast information or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1116 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0072] In an exemplary embodiment, the electronic device 1100 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0073] In an exemplary embodiment, a chip is also provided, the chip including a processor and an interface for reading a computer program through the interface to implement the above method. The chip may be a conventional CPU (central processing unit) chip, a GPU (graphics processing unit) chip, etc., or an acceleration chip dedicated to artificial intelligence technology, such as an AI (Artificial Intelligence) accelerator, etc.

[0074] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0075] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A radio frequency module, characterized in that: It includes a radio frequency module and a level switching module; the level switching module is electrically connected to the first level signal line, the second level signal line and the radio frequency module respectively; The level switching module is used to switch to the first level signal line when the first level signal line transmits a first level signal to provide the first level to the RF module; And when the first level signal line transmits a second level signal, it switches to the second level signal line to provide the second level to the RF module.

2. The radio frequency module according to claim 1, characterized in that: The level switching module includes at least one switch device; the at least one switch device is used to conduct the first level signal line and the radio frequency module, or conduct the second level signal and the radio frequency module.

3. The radio frequency module according to claim 2, characterized in that: The level switching module includes a first switching switch; a first end of the first switching switch is electrically connected to the first level signal line, a second end of the first switching switch is electrically connected to the second level signal line, and a third end of the first switching switch is electrically connected to a power pin of the RF module; a control end of the first switching switch is used to receive a control signal.

4. The radio frequency module according to claim 3, characterized in that: The level switching module further includes a first resistor; a first end of the first resistor is electrically connected to the second level signal line, and a second end of the first resistor is electrically connected to the second end of the first switch.

5. The radio frequency module according to claim 2, characterized in that: The level switching module includes a first switch and a second switch; the first end of the first switch is electrically connected to the first level signal line, the second end of the first switch is electrically connected to the power pin of the RF module, and the control end of the first switch is used to receive a first control signal; The first end of the second switch is electrically connected to the second level signal line, the second end of the second switch is electrically connected to the power pin of the RF module, and the control end of the second switch is used to receive a second control signal.

6. The radio frequency module according to claim 5, characterized in that: The level switching module further includes a second resistor; a first end of the second resistor is electrically connected to the second level signal line, and a second end of the second resistor is electrically connected to the first end of the second switch.

7. The radio frequency module according to claim 5, characterized in that: The first switch is implemented by an N-type field effect transistor, and the second switch is implemented by a P-type field effect transistor.

8. The radio frequency module according to claim 2, characterized in that: The radio frequency module further includes a level sampling module, and the level sampling module is electrically connected to the first level signal line and the at least one switching device respectively; The level sampling module is used to collect the voltage value on the first level signal line and output a control signal matching the voltage value.

9. The radio frequency module according to claim 8, characterized in that: The level sampling module includes a sampling resistor; a first end of the sampling resistor is electrically connected to the first level signal line, and a second end of the sampling resistor is electrically connected to each switch device.

10. The radio frequency module according to any one of claims 1 to 9, characterized in that: The RF module includes a level conversion unit and a RF amplifier unit; the level conversion unit is electrically connected to the RF amplifier unit; the level conversion unit is electrically connected to a power pin of the RF module; The level conversion unit is used to output an enable signal or a disable signal according to the level signal of the power pin; The radio frequency amplifier unit is used to output the radio frequency signal when receiving the enable signal, and stop outputting the radio frequency signal when receiving the disable signal.

11. The radio frequency module according to claim 10, characterized in that: The RF module also includes an antenna module; the antenna module is electrically connected to the RF module; the antenna module is used to convert the RF signal into an electromagnetic wave signal and radiate it into space, and convert the electromagnetic wave signal into a RF signal when it is received and transmit it to the RF module.

12. An electronic device, characterized in that: Comprising a radio frequency module as described in any one of claims 1 to 11.

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