Radio frequency system, electronic device, and computer readable storage medium

Abstract

The application is suitable for the field of radio frequency communication technology, and provides a radio frequency system, an electronic device and a computer readable storage medium. The radio frequency system comprises a first radio frequency circuit, a second radio frequency circuit, a first antenna, a second antenna, a first radio frequency connecting line and a second radio frequency connecting line. The radio frequency system further comprises a first node, a first voltage dividing element and a second voltage dividing element. The first node is coupled with a first potential. The second voltage dividing element is coupled in parallel between two ends of the first radio frequency connecting line. The first end of the first voltage dividing element is coupled with a third potential. The second end of the first voltage dividing element is coupled between the first radio frequency connecting line and the second radio frequency connecting line. The connection / disconnection of the first radio frequency connecting line and the second radio frequency connecting line can be determined according to the change of the potential of the first node. The hardware required for detecting whether each radio frequency connecting line is connected or disconnected is reduced, and the cost required for detecting whether each radio frequency connecting line is connected or disconnected is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radio frequency communication, and in particular to a radio frequency system, an electronic device, and a computer readable storage medium. BACKGROUND

[0002] A radio frequency cable is used to connect a radio frequency circuit and an antenna in an electronic device such as a terminal device, so that the terminal device can perform radio frequency communication through the connected radio frequency circuit and antenna. The radio frequency circuit can be located on a mainboard of the terminal device, and the mainboard can further include a connection seat corresponding to the radio frequency circuit; the subboard can include a connection seat corresponding to the antenna; and the radio frequency cable can connect the radio frequency circuit and the antenna through the connection seats on the mainboard and the subboard.

[0003] With the development of communication technology, the number of antennas in electronic devices such as terminal devices is increasing, which increases the number of radio frequency cables in the terminal device, and the radio frequency cables often have connection abnormalities (such as connection errors or disconnections). SUMMARY

[0004] The present application provides a radio frequency system, an electronic device, and a computer readable storage medium, which solves the problem that the prior art cannot accurately determine the connection abnormality of the radio frequency cable in the electronic device.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] In a first aspect, a radio frequency system is provided, comprising: a first radio frequency circuit, a second radio frequency circuit, a first antenna, a second antenna, a first radio frequency cable, and a second radio frequency cable, the first antenna being coupled to the first radio frequency circuit or the second radio frequency circuit through the first radio frequency cable, and the second antenna being coupled to the first radio frequency circuit or the second radio frequency circuit through the second radio frequency cable.

[0007] The radio frequency system further comprises a first node, a first voltage dividing element, and a second voltage dividing element.

[0008] The first node is coupled to a first potential, the first node is coupled to a first end of the first radio frequency cable, a second end of the second radio frequency cable is coupled to a second potential, and the first potential is higher than the second potential.

[0009] A first end of the first voltage dividing element is coupled to a third potential, and a second end of the first voltage dividing element is coupled between the first radio frequency cable and the second radio frequency cable, and the first potential is higher than the third potential.

[0010] The second voltage dividing element is coupled in parallel between two ends of the first radio frequency cable.

[0011] By setting the first voltage dividing element and the second voltage dividing element in the radio frequency system, when the first radio frequency connection line and the second radio frequency connection line are connected or disconnected, the flow direction of the current in the radio frequency system changes, the voltage division of the first voltage dividing element and the second voltage dividing element also changes, and the potential of the first node also changes, so that whether the first radio frequency connection line and the second radio frequency connection line are connected or disconnected can be determined according to the changed potential, without setting the GPIOs in direct proportion to the number of cables, the hardware required for detecting whether each cable is connected or disconnected can be reduced, and the cost required for detecting whether each cable is connected or disconnected can be reduced.

[0012] In a first possible implementation manner of the first aspect, the radio frequency system further includes a first ground capacitor, which is connected in parallel with the first voltage dividing element.

[0013] By setting the first ground capacitor, the radio frequency signal in the radio frequency circuit that is introduced into the radio frequency system can be guided to the third potential, that is, the ground potential, through the first ground capacitor, so that the radio frequency signal in one radio frequency circuit can be prevented from entering another radio frequency circuit through the radio frequency system, and thus the isolation degree between the two radio frequency circuits can be improved.

[0014] Based on any one of the possible implementation manners of the first aspect, in a second possible implementation manner of the first aspect, the radio frequency system further includes a third voltage dividing element, which is coupled in series between the first radio frequency connection line and the second radio frequency connection line.

[0015] By adding the third voltage dividing element, the function diversity of the radio frequency system can be improved on the basis of the radio frequency system having the function of detecting connection or disconnection, and the cost required for detecting the radio frequency connection line in different abnormal states can be reduced.

[0016] Based on any one of the possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the radio frequency system further includes a power supply, and the first node is coupled with the power supply of the radio frequency system.

[0017] The power supply includes a direct current voltage source and a pull-up resistor, a first end of the pull-up resistor is coupled with an output end of the direct current voltage source, and a second end of the pull-up resistor is coupled with the first node.

[0018] By using the direct current voltage source to supply power to the radio frequency system, the stability of detecting the radio frequency connection line can be improved, and the pull-up resistor can improve the safety and accuracy of detecting the radio frequency connection line.

[0019] In a fourth possible implementation of the first aspect, the radio frequency system further comprises a detection module, and the radio frequency system collects the potential of the first node through the detection module.

[0020] In a fifth possible implementation of the first aspect, the detection module is an analog-to-digital converter (ADC) or a voltage comparator.

[0021] By using the detection module including different circuits to detect the potential of the first node, the flexibility of detecting the radio frequency connection line can be improved. Moreover, by using the ADC or the voltage comparator to detect the potential, different sizes of potentials of the first node can be identified, and detection of multiple potentials can be supported.

[0022] In a sixth possible implementation of the first aspect, the radio frequency system further comprises:

[0023] a first connection seat, a second connection seat, a third connection seat, and a fourth connection seat;

[0024] a first DC blocking capacitor, a second DC blocking capacitor, a third DC blocking capacitor, and a fourth DC blocking capacitor;

[0025] a first choke inductor, a second choke inductor, a third choke inductor, and a fourth choke inductor;

[0026] The first radio frequency circuit is coupled to the first connection seat, the first antenna is coupled to the second connection seat, the second radio frequency circuit is coupled to the third connection seat, and the second antenna is coupled to the fourth connection seat.

[0027] The first DC blocking capacitor is coupled between the first radio frequency circuit and the first connection seat, the second DC blocking capacitor is coupled between the first antenna and the second connection seat, the third DC blocking capacitor is coupled between the second radio frequency circuit and the third connection seat, and the fourth DC blocking capacitor is coupled between the second antenna and the fourth connection seat.

[0028] The first end of the first choke inductor is coupled between the first DC blocking capacitor and the first connecting seat, the second end of the first choke inductor is coupled with the second end of the first voltage dividing element, the first end of the second choke inductor is coupled between the second DC blocking capacitor and the second connecting seat, the second end of the second choke inductor is coupled with the first node, the first end of the third choke inductor is coupled between the third DC blocking capacitor and the third connecting seat, the second end of the third choke inductor is coupled with the second end of the first voltage dividing element, and the first end of the fourth choke inductor is coupled between the fourth DC blocking capacitor and the fourth connecting seat, and the second end of the fourth choke inductor is coupled with the third potential.

[0029] By arranging the DC blocking capacitor and the choke inductor, the RF signal in the RF circuit can be prevented from entering the RF system, and the current in the RF system can be prevented from entering the RF circuit, so that the isolation between the RF system and the RF circuit can be improved, and the accuracy of the RF system can be improved.

[0030] In a seventh possible implementation of the first aspect, the potential of the first node changes with whether at least one end of the first RF connecting line and the second RF connecting line is connected or disconnected with the corresponding connecting seat.

[0031] The potential of the first node can change according to whether the first RF connecting line or the second RF connecting line is connected or disconnected, so that the first node is used as a detection point, and whether the first RF connecting line and the second RF connecting line are connected or disconnected is determined according to the change of the potential of the detection point.

[0032] In an eighth possible implementation of the first aspect, when the two ends of the first RF connecting line are coupled with the first RF circuit and the first antenna respectively, and the two ends of the second RF connecting line are coupled with the second RF circuit and the second antenna respectively, the potential of the first node is in a first state.

[0033] When at least one end of the first RF connecting line and the second RF connecting line is connected or disconnected with the corresponding connecting seat, the potential of the first node is in a second state.

[0034] Based on the detection point being in the first potential state or the second potential state, the coupling state of the first RF connecting line and the second RF connecting line can be determined, so that whether each RF connecting line is connected or disconnected can be determined according to the potential state of the detection point, and the accuracy and flexibility of detecting whether the RF connecting line is connected abnormally can be improved.

[0035] In a ninth possible implementation of the first aspect, according to any of the possible implementation of the first aspect, the first voltage dividing element and the second voltage dividing element are resistors, and the second potential and the third potential are both ground potentials.

[0036] By using resistors as voltage dividing elements, the cost of detecting the radio frequency connection lines can be reduced.

[0037] In a tenth possible implementation of the first aspect, according to any of the possible implementation of the first aspect, the radio frequency system further comprises a third radio frequency circuit, a third antenna and a third radio frequency connection line, the third radio frequency circuit is coupled with the first antenna, the second antenna or the third antenna through the third radio frequency connection line.

[0038] The radio frequency system further comprises a fourth voltage dividing element and a fifth voltage dividing element.

[0039] A first end of the fourth voltage dividing element is coupled with the third potential, and a second end of the fourth voltage dividing element is coupled between the second radio frequency connection line and the third radio frequency connection line.

[0040] The fifth voltage dividing element and the second voltage dividing element are coupled in parallel between two ends of the second radio frequency connection line.

[0041] By providing the radio frequency system in the electronic device comprising three radio frequency connection lines, the connection state of each radio frequency connection line can be determined by a small number of components, the cost of detecting the radio frequency connection lines is reduced, and the flexibility of detecting the radio frequency connection lines is improved.

[0042] In an eleventh possible implementation of the first aspect, according to the tenth possible implementation of the first aspect, the radio frequency system further comprises a second ground capacitor, the second ground capacitor is coupled in parallel with the fourth voltage dividing element.

[0043] By providing the ground capacitor, the ground capacitor is located between two radio frequency circuits, and the radio frequency signal in the radio frequency circuit that is introduced into the radio frequency system can be guided to the third potential, i.e. the ground potential, through the ground capacitor, so that the radio frequency signal in one radio frequency circuit can be prevented from entering another radio frequency circuit through the radio frequency system, and the isolation degree between the two radio frequency circuits can be improved.

[0044] In a twelfth possible implementation of the first aspect, according to the tenth or eleventh possible implementation of the first aspect, the radio frequency system further comprises a sixth voltage dividing element, the sixth voltage dividing element is coupled in series between the second radio frequency connection line and the third radio frequency connection line.

[0045] By adding the sixth voltage dividing element, the function diversity of the radio frequency system is improved, and the cost required for detecting different abnormal states of the radio frequency connection line is reduced.

[0046] In a thirteenth possible implementation of the first aspect, based on the tenth, eleventh or twelfth possible implementation of the first aspect, the radio frequency system further comprises:

[0047] a fifth connection seat and a sixth connection seat;

[0048] a fifth direct-current blocking capacitor and a sixth direct-current blocking capacitor;

[0049] a fourth choke inductor, a fifth choke inductor, a sixth choke inductor and a seventh choke inductor;

[0050] The third radio frequency circuit is coupled with the fifth connection seat, and the third antenna is coupled with the sixth connection seat.

[0051] The fifth direct-current blocking capacitor is coupled between the third radio frequency circuit and the fifth connection seat, and the sixth direct-current blocking capacitor is coupled between the third antenna and the sixth connection seat.

[0052] A first end of the fourth choke inductor is coupled between the fifth direct-current blocking capacitor and the fifth connection seat, a second end of the fourth choke inductor is coupled with the second potential, a first end of the fifth choke inductor is coupled between the third direct-current blocking capacitor and the third connection seat, a second end of the fifth choke inductor is coupled with the first end of the fifth voltage dividing element, a first end of the sixth choke inductor is coupled between the fourth direct-current blocking capacitor and the fourth connection seat, a second end of the sixth choke inductor is coupled with the first end of the fifth voltage dividing element, and a first end of the seventh choke inductor is coupled between the sixth direct-current blocking capacitor and the sixth connection seat, and a second end of the seventh choke inductor is coupled with the first end of the fifth voltage dividing element.

[0053] By setting the direct-current blocking capacitor and the choke inductor, the radio frequency signal in the radio frequency circuit can be prevented from entering the radio frequency system, and the current in the radio frequency system can be prevented from entering the radio frequency circuit, so that the isolation between the radio frequency system and the radio frequency circuit can be improved, and the accuracy of the radio frequency system can be improved.

[0054] In a fourteenth possible implementation of the first aspect, based on any one of the tenth to thirteenth possible implementations of the first aspect, the fourth voltage dividing element and the fifth voltage dividing element are both resistors.

[0055] By using a resistor as the voltage dividing element, the cost of detecting the radio frequency connection line can be reduced.

[0056] In a fifteenth possible implementation manner of the first aspect, the radio frequency system further comprises a general input / output port (GPIO) detection module, and the first node is further coupled with the GPIO detection module.

[0057] By adding the radio frequency system provided in the embodiments of the present application on the basis of the electronic device comprising the GPIO and in combination with the original GPIO in a wire multiplexing manner, the number of wires can be reduced and the hardware resources can be saved. Moreover, on the basis of the original GPIO having the function of determining whether each cable is disconnected, in combination with the radio frequency system, whether each cable of the electronic device is connected incorrectly can be determined, so that the function of the radio frequency system can be enriched and the diversity of the functions implemented by the radio frequency system can be improved.

[0058] In a second aspect, a radio frequency system is provided, comprising: N radio frequency circuits, N antennas and N radio frequency connecting lines, N being an integer greater than or equal to 2, the i-th radio frequency circuit being coupled with the i-th antenna through the i-th radio frequency connecting line, i being a positive integer less than or equal to N-1;

[0059] The radio frequency system comprises: a first node, N-1 first voltage dividing elements and N-1 second voltage dividing elements;

[0060] The first node is coupled with a first potential, the first node is coupled with a first end of the i-th radio frequency connecting line, a second end of the i+1-th radio frequency connecting line is coupled with a second potential, and the first potential is higher than the second potential;

[0061] A first end of the i-th first voltage dividing element is coupled with a third potential, a second end of the i-th first voltage dividing element is coupled between the i-th radio frequency connecting line and the i+1-th radio frequency connecting line, and the first potential is higher than the third potential;

[0062] The i-th second voltage dividing element is coupled in parallel across the i-th radio frequency connecting line.

[0063] By arranging N voltage dividing elements in the radio frequency system, when at least two radio frequency connecting lines are disconnected, the flow direction of the current in the radio frequency system changes, the voltage division of the N voltage dividing elements also changes, and then the potential of the first node also changes, so that whether the first radio frequency connecting line and the second radio frequency connecting line are disconnected can be determined according to the changed potential, without arranging the GPIOs in direct proportion to the number of cables, the hardware required for detecting whether each cable is connected or disconnected can be reduced, and the cost required for detecting whether each cable is connected or disconnected can be reduced.

[0064] In a first possible implementation manner of the second aspect, the radio frequency system further comprises a ground capacitor, the ground capacitor being connected in parallel with the first voltage dividing element.

[0065] By arranging the ground capacitor between the two radio frequency circuits, the radio frequency signal in the radio frequency circuit that is coupled into the radio frequency system can be guided to the third potential, i.e., the ground potential, through the ground capacitor, so that the radio frequency signal in one radio frequency circuit can be prevented from entering another radio frequency circuit through the radio frequency system, and thus the isolation between the two radio frequency circuits can be improved.

[0066] In a second possible implementation manner of the second aspect, based on any one of the possible implementation manners of the second aspect, the radio frequency system further comprises N-1 third voltage dividing elements, an i-th third voltage dividing element being connected in series between an i-th radio frequency connection line and an i+1-th radio frequency connection line.

[0067] By adding the third voltage dividing elements, the radio frequency system can have the function of detecting the disconnection of the connection in combination with the function of detecting the connection error, so that the functional diversity of the radio frequency system is improved, and the cost required for detecting the radio frequency connection line in different abnormal states is reduced.

[0068] In a third possible implementation manner of the second aspect, based on any one of the possible implementation manners of the second aspect, the radio frequency system further comprises a power supply, the first node being coupled with the power supply.

[0069] The power supply comprises a direct current voltage source and a pull-up resistor, a first end of the pull-up resistor being coupled with an output end of the direct current voltage source, and a second end of the pull-up resistor being coupled with the first node.

[0070] By using the direct current voltage source to supply power to the radio frequency system, the stability of detecting the radio frequency connection line can be improved, and the pull-up resistor can improve the safety and accuracy of detecting the radio frequency connection line.

[0071] In a fourth possible implementation manner of the second aspect, based on any one of the possible implementation manners of the second aspect, the radio frequency system further comprises a detection module, the radio frequency system collecting the potential of the first node through the detection module.

[0072] In a fifth possible implementation manner of the second aspect, based on the fourth possible implementation manner of the second aspect, the detection module is an ADC or a voltage comparator.

[0073] By using the detection module comprising different circuits to detect the potential of the first node, the flexibility of detecting the radio frequency connection line can be improved. Moreover, by using the ADC or the voltage comparator to detect the potential, different sizes of the potential of the first node can be identified, and the detection of multiple potentials can be supported.

[0074] In a sixth possible implementation manner of the second aspect, based on any of the possible implementation manners of the second aspect, the radio frequency system further comprises 2N connection seats, 2N DC blocking capacitors and a plurality of choke inductors.

[0075] Two ends of the ith radio frequency connection line are coupled with the 2i-1th connection seat and the 2ith connection seat respectively;

[0076] Each of the antennas is coupled with a corresponding connection seat via a DC blocking capacitor, and each of the radio frequency circuits is coupled with a corresponding connection seat via a DC blocking capacitor;

[0077] Each of the second voltage dividing elements is coupled with an adjacent connection seat via a choke inductor, the first connection seat is coupled with the first node via a choke inductor, and the 2Nth connection seat is coupled with the second node.

[0078] By arranging the DC blocking capacitors and the choke inductors, the radio frequency signal in the radio frequency circuit can be prevented from entering the radio frequency system, and the current in the radio frequency system can be prevented from entering the radio frequency circuit, so that the isolation between the radio frequency system and the radio frequency circuit can be improved, and the accuracy of the radio frequency system can be improved.

[0079] In a seventh possible implementation manner of the second aspect, based on any of the possible implementation manners of the second aspect, the electric potential of the first node changes with whether at least one end of the ith radio frequency connection line is connected or disconnected with a corresponding connection seat.

[0080] The electric potential of the first node can change according to the change of the coupling mode of the first radio frequency connection line and the second radio frequency connection line, so that the first node is taken as a detection point, and the coupling mode of the first radio frequency connection line and the second radio frequency connection line is determined according to the change of the electric potential of the detection point.

[0081] In an eighth possible implementation manner of the second aspect, based on the seventh possible implementation manner of the second aspect, when two ends of the ith radio frequency connection line are coupled with the ith radio frequency circuit and the ith antenna respectively, the electric potential of the detection point is in a first electric potential state.

[0082] When two ends of the ith radio frequency connection line are connected or disconnected with the ith radio frequency circuit or the ith antenna, the electric potential of the detection point is in a second electric potential state.

[0083] Based on the detection point being in the first potential state or the second potential state, the coupling state of the first radio frequency connection line and the second radio frequency connection line can be determined, so that whether each radio frequency connection line is connected abnormally can be determined according to the potential state of the detection point, and the accuracy and flexibility of detecting whether the radio frequency connection line is connected abnormally can be improved.

[0084] In a ninth possible implementation manner of the second aspect, the first voltage dividing element and the second voltage dividing element are both resistors.

[0085] By using resistors as voltage dividing elements, the cost of detecting the radio frequency connection line can be reduced.

[0086] In a tenth possible implementation manner of the second aspect, the radio frequency system further includes a general input / output port (GPIO) detection module, and the first node is further coupled with the GPIO detection module of the radio frequency system.

[0087] By adopting the cable multiplexing manner in combination with the original GPIO on the basis of the electronic device including the GPIO, the radio frequency system provided in the application is added to reduce the cable and save hardware resources. Moreover, on the basis that the original GPIO has the function of determining whether each cable is disconnected, the radio frequency system can determine whether each cable of the electronic device is connected incorrectly, so that the function of the radio frequency system can be enriched, and the diversity of the functions implemented by the radio frequency system can be improved.

[0088] In a third aspect, an electronic device is provided, which includes a memory, a processor, a computer program stored in the memory and executable on the processor, and the radio frequency system according to any one of the first aspect and the second aspect, and when the processor executes the computer program, the detection of the radio frequency connection line in the electronic device is implemented based on the radio frequency system according to any one of the first aspect and the second aspect.

[0089] In a first possible implementation manner of the third aspect, the electronic device further includes at least one of a display and a loudspeaker.

[0090] When the radio frequency connection line in the electronic device is connected abnormally, an alarm is given through the display or the loudspeaker.

[0091] In a fourth aspect, a computer readable storage medium is provided, which stores a computer program, and when a processor executes the computer program, the detection of the radio frequency connection line in the electronic device is implemented based on the radio frequency system according to any one of the first aspect and the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0092] Figure 1is a scene schematic diagram of a scenario related to a radio frequency system provided by an embodiment of the present application;

[0093] Figure 2 is a system architecture schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0094] Figure 3 is another system architecture schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0095] Figure 4 is a circuit framework diagram of a GPIO-based radio frequency system provided by an embodiment of the present application;

[0096] Figure 5 is another circuit framework diagram of a GPIO-based radio frequency system provided by an embodiment of the present application;

[0097] Figure 6 is a circuit framework diagram of a radio frequency system provided by an embodiment of the present application;

[0098] Figure 7 is a simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0099] Figure 8 is another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0100] Figure 9 is yet another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0101] Figure 10 is yet another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0102] Figure 11 is another circuit framework diagram of a radio frequency system provided by an embodiment of the present application;

[0103] Figure 12 is yet another circuit framework diagram of a radio frequency system provided by an embodiment of the present application;

[0104] Figure 13 is yet another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0105] Figure 14 is yet another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0106] Figure 15 is yet another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0107] Figure 16 is yet another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

[0108] Figure 17 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0109] Figure 18 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0110] Figure 19 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0111] Figure 20 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0112] Figure 21 is a circuit block diagram of yet another radio frequency system provided by embodiments of the present application;

[0113] Figure 22 is a circuit block diagram of yet another radio frequency system provided by embodiments of the present application;

[0114] Figure 23 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0115] Figure 24 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0116] Figure 25 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0117] Figure 26 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0118] Figure 27 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0119] Figure 28 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0120] Figure 29 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0121] Figure 30 is a simplified schematic diagram of yet another radio frequency system provided by embodiments of the present application;

[0122] Figure 31 is a circuit block diagram of yet another radio frequency system provided by embodiments of the present application;

[0123] Figure 32is a circuit framework diagram of another radio frequency system provided by an embodiment of the present application;

[0124] Figure 33 is a circuit framework diagram of another radio frequency system provided by an embodiment of the present application;

[0125] Figure 34 is a circuit framework diagram of another radio frequency system provided by an embodiment of the present application;

[0126] Figure 35 is a schematic flowchart of a detection method provided by an embodiment of the present application;

[0127] Figure 36 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0128] In the following description, for the purpose of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known circuits and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0129] The terminology used in the following description merely for the purpose of describing particular embodiments of the present application and is not intended to limit the present application. As used in this description and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0130] First, the scenario related to the embodiments of the present application is introduced, referring to Figure 1 The electronic device can include a main board and a sub-board. The main board is provided with a plurality of radio frequency circuits (RF circuits) (two radio frequency circuits are exemplarily described in the embodiment of the present application), each of which can be connected with a corresponding connecting seat on the main board. Moreover, the electronic device can also include a plurality of antennas, each of which can be connected with a corresponding connecting seat on the sub-board. Figure 1

[0131] It should be noted that the main board and the sub-board of the electronic device can be printed circuit boards (PCBs), and the embodiments of the present application do not limit the main board and the sub-board.

[0132] For example, referring to Figure 1 ​The main board includes the radio frequency circuit 11 and the radio frequency circuit 12, and the radio frequency circuit 11 and the radio frequency circuit 12 correspond to one connecting seat respectively; the secondary board includes two connecting seats, the connecting seat on the left side of the secondary board corresponds to the antenna 22, and the connecting seat on the right side of the secondary board corresponds to the antenna 21, and the antenna 21 and the antenna 22 can be connected with the corresponding connecting seats on the secondary board respectively.

[0133] The radio frequency circuit 11 can include one or more of a power amplifier, a filter, a linear amplifier and a switch, and the radio frequency circuit 11 can be coupled to a processor (such as a baseband processor or a radio frequency transceiver) for generating a transmission signal, and the radio frequency circuit 11 transmits the transmission signal to the antenna 21 through a cable 31, and the antenna 21 transmits the generated wireless signal. The antenna 21 can also receive wireless signals, and the antenna 21 transmits the received wireless signals to the radio frequency circuit 11 through the cable 31, and transmits the received wireless signals to the processor through the radio frequency circuit 11. Similarly, the radio frequency circuit 12 can also include one or more of a power amplifier, a filter, a linear amplifier and a switch, and the radio frequency circuit 12 can be coupled to a processor (such as a baseband processor or a radio frequency transceiver) for generating a transmission signal, and the radio frequency circuit 12 transmits the transmission signal to the antenna 22 through a cable 32, and the antenna 22 transmits the generated wireless signal. The antenna 22 can also receive wireless signals, and the antenna 22 transmits the received wireless signals to the radio frequency circuit 12 through the cable 32, and transmits the received wireless signals to the processor through the radio frequency circuit 12. In a specific embodiment, the processor is also located on the main board.

[0134] In an optional embodiment, the electronic device can include a plurality of cables, each cable can include two ends, the first end is coupled with the connecting seat corresponding to the radio frequency circuit, and the second end is coupled with the connecting seat corresponding to the antenna. During the process of performing radio frequency communication, the radio frequency circuit can transmit radio frequency signals to the antenna through the cable, and the antenna can receive and transmit radio frequency signals to realize radio frequency communication of the electronic device. For example Figure 1 As shown in FIG. 1, the first end of the cable 31 is coupled with the connecting seat corresponding to the radio frequency circuit 11, and the second end of the cable 31 is coupled with the connecting seat corresponding to the antenna 21; similarly, the first end of the cable 32 is coupled with the connecting seat corresponding to the radio frequency circuit 12, and the second end of the cable 32 is coupled with the connecting seat corresponding to the antenna 22.

[0135] The radio frequency connection line can be a coaxial cable. The coaxial cable is a kind of wire and signal transmission line, which has two concentric conductors, and the conductor and the shielding layer share the same axis. The coaxial cable has the following advantages: good transmission characteristics, which can ensure the stable operation of the communication network; strong anti-electromagnetic interference and bending resistance; good flexibility, which is suitable for application in folding and rotating electronic products. In addition, the coaxial cable also has good heat resistance and flame resistance, and can work in an environment of -55 degrees Celsius (℃) to 250 degrees Celsius. The coaxial cable is suitable for transmitting analog signals and digital signals, and can be applied to various applications. The coaxial cable has been widely used, for example, in electronic devices such as smartphones, laptops, digital cameras, camcorders, global positioning system (GPS) locators, wireless routers, liquid crystal televisions, and precision medical instruments, to communicate between different circuit boards. In an embodiment, the radio frequency connection line can transmit analog signals, for example, radio frequency signals.

[0136] The resistance of the radio frequency connection line is generally small. In an embodiment, the resistance value of the radio frequency connection line can range from 1 ohm (Ω) to 50 Ω, for example, 5 Ω, 7.5 Ω, etc. When the radio frequency connection line is connected to the circuit, the resistance value of the radio frequency connection line can fluctuate. For example, when the radio frequency connection line is not connected to the circuit, the resistance value can be 7.5 Ω, and when the radio frequency connection line is connected to the circuit, the resistance value can fluctuate between 8 Ω and 50 Ω.

[0137] During the production process of the electronic device, each cable can be connected to the corresponding connection seat by buckling. However, due to the buckling degree of each cable and the collision and vibration of the electronic device during use, the cable and the connection seat can become loose or the cable can fall off the connection seat, causing the radio frequency circuit to fail to transmit radio frequency signals to the antenna and resulting in a decrease in the communication quality of the electronic device.

[0138] Therefore, the embodiments of the present application propose a radio frequency system capable of detecting whether the cable is connected or disconnected, and a detection method for detecting whether the cable is connected or disconnected. The radio frequency system can read the potential of the detection point set in advance to determine the voltage division of each resistance in the radio frequency system, thereby determining whether each cable is connected or disconnected. The detection point can be a position in the radio frequency system where the potential changes due to the change in the circuit coupling mode caused by the connection or disconnection of each cable or connection error. The embodiments of the present application do not limit the detection point of the radio frequency system.

[0139] It should be noted that in actual application, the above-mentioned radio frequency circuit, antenna and radio frequency connecting line can have various descriptions, for example, the above-mentioned radio frequency circuit 11 can be a first radio frequency circuit, the radio frequency circuit 12 can be a second radio frequency circuit, the antenna 21 can be a first antenna, the antenna 22 can be a second antenna, the cable 31 can be a first radio frequency connecting line, and the cable 32 can be a second radio frequency connecting line. If the electronic device includes three radio frequency circuits, three antennas and three radio frequency connecting lines, the radio frequency circuit 13 can be a third radio frequency circuit, the antenna 23 can be a third antenna, and the cable 33 can be a third radio frequency connecting line. Similarly, when the electronic device includes N radio frequency circuits, N antennas and N radio frequency connecting lines, any one radio frequency circuit can be an i-th radio frequency circuit, any one antenna can be an i-th antenna, and any one radio frequency connecting line can be an i-th radio frequency connecting line, where N is an integer greater than or equal to 2, and i is a positive integer less than or equal to N.

[0140] Moreover, the connection seat, choke inductance and direct current blocking capacitor coupled with each cable can also have various descriptions, for example, the first connection seat can be the connection seat 41 described below, the second connection seat can be the connection seat 42 described below, the third connection seat can be the connection seat 43 described below, the fourth connection seat can be the connection seat 44 described below, the fifth connection seat can be the connection seat 45 described below, the sixth connection seat can be the connection seat 46 described below, the first choke inductance can be the choke inductance L1 described below, the second choke inductance can be the choke inductance L2 described below, the third choke inductance can be the choke inductance L3 described below, the fourth choke inductance can be the choke inductance L4 described below, the fifth choke inductance can be the choke inductance L5 described below, the sixth choke inductance can be the choke inductance L6 described below, the seventh choke inductance can be the choke inductance L7 described below, the first direct current blocking capacitor can be the direct current blocking capacitor C1 described below, the second direct current blocking capacitor can be the direct current blocking capacitor C2 described below, the third direct current blocking capacitor can be the direct current blocking capacitor C3 described below, the fourth direct current blocking capacitor can be the direct current blocking capacitor C4 described below, the first ground capacitor can be the ground capacitor C5 described below, the fifth direct current blocking capacitor can be the direct current blocking capacitor C6 described below, the sixth direct current blocking capacitor can be the direct current blocking capacitor C7 described below, and the second ground capacitor can be the ground capacitor C8 described below.

[0141] Similarly, when the electronic device includes 2N connection seats, a plurality of choke inductances and 2N direct current blocking capacitors, any one connection seat can be an i-th connection seat, any one choke inductance can be an i-th choke inductance, and any one direct current blocking capacitor can be an i-th direct current blocking capacitor, where N is an integer greater than or equal to 2, and i is a positive integer less than or equal to N-1.

[0142] In addition, each voltage dividing element in the radio frequency system can also be described in various ways. For example, the first voltage dividing element can be R1, the second voltage dividing element can be R2, the third voltage dividing element can be R5, the fourth voltage dividing element can be R3, the fifth voltage dividing element can be R4, and the sixth voltage dividing element can be R6.

[0143] In addition, the first voltage dividing element and the second voltage dividing element can constitute a voltage dividing module. The first voltage dividing element can be an element coupled to a ground potential in each voltage dividing module, and the second voltage dividing element can be an element connected in series between each cable.

[0144] It should be noted that the radio frequency system can be applied in an electronic device. The first potential in the radio frequency system can be a high potential, and the second potential and the third potential can be low potentials. For example, the first potential can be a potential coupled to a power supply, and the second potential and the third potential can be ground potentials. For example, the second potential can be a ground potential GND1, and the third potential can be a ground potential GND2. In the radio frequency system including three cable pairs described below, the third potential coupled to the fourth voltage dividing element can be a ground potential GND3. In the following embodiments, the first potential is coupled to the power supply, and the second potential and the third potential are ground potentials.

[0145] Figure 2 FIG. 1 is a schematic diagram of a system architecture of a radio frequency system according to an embodiment of the present application. As an example but not limitation, the radio frequency system can be applied in an electronic device. Figure 2 The system architecture can include a radio frequency system 201, a processor 202, a memory 203, and a plurality of cables 204.

[0146] The radio frequency system 201 can be coupled to each cable 204. The radio frequency system 201 can also be coupled to the processor 202. The processor 202 can be coupled to the memory 203.

[0147] When detecting whether each cable 204 is connected or disconnected, the radio frequency system 201 can collect the potential of the detection point through a pre-set detection module and send the potential information corresponding to the potential to the processor 202. The processor 202 can receive the potential information and determine the pre-set potential matched with the potential information from a plurality of pre-set potentials stored in advance. Thus, the connection state corresponding to the pre-set potential can be stored in the memory 203, so that maintenance personnel can know whether each cable 204 is connected or disconnected according to the connection state stored in the memory 203.

[0148] The plurality of preset potentials pre-stored by the electronic device correspond to different connection states of each cable respectively. For example, the electronic device includes the cable 31 and the cable 32, and the electronic device can pre-store four preset potentials, wherein the first preset potential can correspond to the normal connection of the cable 31 and the cable 32, the second preset potential can correspond to the disconnection of the cable 31 and the normal connection of the cable 32, the third preset potential can correspond to the normal connection of the cable 31 and the disconnection of the cable 32, and the fourth preset potential can correspond to the disconnection of the cable 31 and the cable 32.

[0149] Moreover, when at least one cable is disconnected, the coupling mode of each voltage division resistor in the radio frequency system changes, and the potential of the detection point also changes accordingly. That is, the potential of the detection point can change according to the change of the coupling mode of each voltage division resistor in the radio frequency system.

[0150] In addition, referring to Figure 3 The system architecture can further include at least one of a display screen 205 and a loudspeaker 206, both of which can be coupled with the processor 202. When the processor 202 determines that each cable 3204 is disconnected according to the state corresponding to the preset potential, the processor 202 can control the display screen 205 to remind the user, and the processor 202 can also control the loudspeaker 206 to remind the user, informing the user that each cable 204 is disconnected.

[0151] For example, the display screen 205 can display “the radio frequency connection line is disconnected, please check! ”, and / or the loudspeaker 206 can issue the voice “the radio frequency connection line is disconnected, please check!”.

[0152] In addition, in actual application, the electronic device can include a plurality of cables 204, and the following takes the electronic device including one cable 204 as an example to illustrate how to determine whether the cable 204 (such as the cable 31 shown in Figure 4 ).

[0153] Referring to Figure 4 The embodiment of the present application provides a GPIO-based radio frequency system, Figure 4 is a circuit block diagram of a GPIO-based radio frequency system provided by the embodiment of the present application, and the radio frequency system can include a GPIO power supply module 401, a GPIO detection module 402, a plurality of DC blocking capacitors (C1 and C2) and a plurality of choke inductors (L1 and L2), the GPIO power supply module 401 is coupled with the GPIO detection module 402, and the coupling mode of the plurality of DC blocking capacitors and the plurality of choke inductors is as shown in Figure 4As shown.

[0154] The GPIO power supply module 401 can include a direct current voltage source V0 and a pull-up resistor R0, and the pull-up resistor R0 is coupled with the output end of the direct current voltage source V0.

[0155] In the process of detecting whether the cable is disconnected, the GPIO detection module 402 can collect the potential of the detection point in the radio frequency system, which can be the output end of the GPIO power supply module 401, that is, the end of the pull-up resistor R0 coupled with the GPIO detection module 402. If the cable of the electronic device is normally connected, the voltage drop in the radio frequency system is all on the pull-up resistor R0 in the GPIO power supply module 401, and the potential collected by the GPIO detection module 402 is low, which can determine that the cable of the electronic device is normally connected. If the cable of the electronic device is disconnected, the radio frequency system cannot form a circuit loop, and the potential collected by the GPIO detection module 402 is high, which can determine that the cable of the electronic device is disconnected.

[0156] The above is an example of an electronic device including one cable, that is, whether one cable is connected or disconnected is detected by one GPIO power supply module 401 and one GPIO detection module 402. In the case of an electronic device including two or more cables, the GPIO power supply module 401 and the GPIO detection module 402 can be used to detect whether any one of the cables is connected or disconnected. Figure 4 As shown, the two or more cables of the electronic device can be detected to determine whether any one of the cables in the electronic device is connected or disconnected.

[0157] For example, taking the detection of two cables (cable 31 and cable 32) as an example, on the basis of the radio frequency system as shown in Figure 4 , a radio frequency system as shown in Figure 5 can be obtained. Referring to Figure 5 , Figure 5 is another circuit framework diagram of a GPIO-based radio frequency system provided by the embodiment of the present application, which can include a GPIO power supply module 501, a GPIO detection module 502, a plurality of DC blocking capacitors (C1, C2, C3 and C4) and a plurality of choke inductors (L1, L2, L3 and L4), as shown in Figure 5 , which is similar to the radio frequency system as shown in Figure 4 , and will not be described here.

[0158] When the cable 31 and / or the cable 32 are disconnected, the radio frequency system cannot form a circuit loop, and the potential collected by the GPIO detection module 502 is high. When the cable 31 and the cable 32 are normally connected, the radio frequency system can form a circuit loop, and the potential collected by the GPIO detection module 502 is low.

[0159] like Figure 5 The illustrated RF system can detect whether multiple cables are disconnected or not using a GPIO power supply module 501 and a GPIO detection module 502, thereby reducing the hardware cost of the RF system. However, the GPIO-based RF system can only detect whether a cable in an electronic device is disconnected or not, and cannot accurately determine which cables in the electronic device are disconnected or not.

[0160] Therefore, the present application embodiment further proposes a radio frequency system, see Figure 6 , Figure 6 This is a circuit diagram of a radio frequency system provided in an embodiment of the present application, see Figure 6 The RF system may include: multiple circuit modules such as a voltage divider module 601, a detection module 602 and a power supply module 603. The RF system may also include: a first node (A), multiple DC blocking capacitors (C1, C2, C3 and C4) and multiple choke inductors (L1, L2, L3 and L4).

[0161] Among them, the output end of the power supply module 603 can be coupled to the detection module 602 and the voltage divider module 601 respectively through the first node A. The power supply module 603 can supply power to the voltage divider module 601, and the voltage divider module 601 can form different voltage divisions according to the different coupling modes of each cable, so that the detection module 602 can detect the potential of the detection point, thereby obtaining different potentials corresponding to the different coupling modes of each cable, and then determine whether each cable is connected or disconnected according to the different potentials.

[0162] Furthermore, a voltage divider module 601 can be coupled to both ends of cable 31. When cable 31 is normally connected, voltage divider module 601 can be short-circuited by cable 31. When cable 31 is disconnected, power supply module 603 can be coupled to ground potential GND1 and ground potential GND2 through voltage divider module 601, thereby forming a loop.

[0163] Unlike cable 31, cable 32 can be coupled to ground potential GND1 and cable 31 at both ends, and it lacks a voltage divider. When cable 32 is connected properly, the RF system can form a loop through cable 32, which is coupled to ground potential GND1. When cable 32 is disconnected, the RF system can form a loop through voltage divider module 601, which couples to ground potential GND2.

[0164] Moreover, a DC blocking capacitor can be arranged between the radio frequency circuit and the corresponding connecting seat, and a DC blocking capacitor can also be arranged between the antenna and the corresponding connecting seat, to prevent the DC current of the radio frequency system from flowing into the radio frequency circuit and the antenna to interfere with the radio frequency signal. Moreover, a choke inductance L1 can be arranged between the voltage dividing module 601 and the cable 31; similarly, a choke inductance L2 can be arranged between the power supply module 603 and the cable 31, and a choke inductance L3 can also be arranged between the voltage dividing module 601 and the cable 32. The choke inductance has the effect of passing DC and blocking AC, which can prevent the AC radio frequency signal in the radio frequency circuit from entering the radio frequency system to affect the detection result of the radio frequency system. Further, a choke inductance L4 can also be arranged between the cable 32 and the ground potential GND1, to prevent the radio frequency signal sent by the radio frequency circuit from entering the ground potential GND1, thereby avoiding interference with the radio frequency signal.

[0165] Specifically, for each DC blocking capacitor, a DC blocking capacitor C1 is arranged between the radio frequency circuit 11 and the corresponding connecting seat 41, and a DC blocking capacitor C2 is arranged between the antenna 21 and the corresponding connecting seat 42; similarly, a DC blocking capacitor C3 is arranged between the radio frequency circuit 12 and the corresponding connecting seat 43, and a DC blocking capacitor C4 is arranged between the antenna 22 and the corresponding connecting seat 44.

[0166] And for each choke inductance, a first end of the choke inductance L1 can be coupled between the DC blocking capacitor C1 and the connecting seat 41 corresponding to the radio frequency circuit 11, and a second end of the choke inductance L1 can be coupled with the voltage dividing module 601. Similarly, a first end of the choke inductance L2 can be coupled between the DC blocking capacitor C2 and the connecting seat 42 corresponding to the antenna 21, and a second end of the choke inductance L2 can be coupled with the power supply module 603; a first end of the choke inductance L3 can be coupled between the DC blocking capacitor C3 and the connecting seat 43 corresponding to the radio frequency circuit 12, and a second end of the choke inductance L3 can be coupled with the voltage dividing module 601; a first end of the choke inductance L4 can be coupled between the DC blocking capacitor C4 and the connecting seat 44 corresponding to the antenna 22, and a second end of the choke inductance L4 can be coupled with the ground potential GND1.

[0167] In addition, the power supply module 603 can include a DC voltage source V0 and a pull-up resistor R0, an output end of the DC voltage source V0 is coupled with a first end of the pull-up resistor R0, a second end of the pull-up resistor R0 is coupled with the second end of the choke inductance L2 through a first node A, and the second end of the pull-up resistor R0 can be an output end of the power supply module 603.

[0168] The DC voltage source V0 can be a voltage source built-in in the electronic device, for example, the DC voltage source V0 can be a built-in battery of the electronic device, or can be a voltage reduction module connected with the built-in battery of the electronic device, and the embodiment of the present application does not limit the DC voltage source V0.

[0169] In addition, the power supply module 603 can be a circuit module in an integrated circuit, coupled with the radio frequency system through the first node A, or a circuit module on a circuit board of the electronic device, and the embodiments of the present application do not limit the power supply module.

[0170] The detection module 602 can include a voltage detection circuit, an input end of the voltage detection circuit can be coupled with the second end of the pull-up resistor R0, and an output end of the voltage detection circuit can be coupled with a processor in the system architecture as shown. Figure 2 The voltage detection circuit can be an analog-to-digital converter (ADC), a voltage comparator, or other circuits capable of reading voltage, and the embodiments of the present application do not limit this.

[0171] For example, if the voltage detection circuit is an ADC, in the process of collecting the potential of the detection point, the ADC can first collect the analog voltage signal in the detection circuit according to the pre-set sampling frequency, and then quantize the collected analog voltage signal, and finally represent the quantized analog voltage signal in digital form through coding to complete the collection of the potential of the detection point. Alternatively, if the voltage detection circuit includes at least one voltage comparator, in the process of collecting the potential of the detection point, each voltage comparator can first collect the potential of the detection point, and then compare the collected potential with the pre-set potential to determine the size relationship between the potential of the detection point and each pre-set potential, so that the size of the potential of the detection point can be determined according to the multiple size relationships.

[0172] The voltage division module 601 can include a first voltage division resistor R1 and a second voltage division resistor R2, a first end of the first voltage division resistor R1 is coupled with the ground potential GND2, and a second end of the first voltage division resistor R1 and a second end of the second voltage division resistor R2 are both coupled between the choke inductance L1 and the choke inductance L3. The first end of the second voltage division resistor R2 is coupled with the second end of the pull-up resistor R0 in the power supply module 603. The second end of the pull-up resistor R0 is coupled between the blocking capacitor C2 and the connecting seat 42 corresponding to the antenna 21, so the first end of the second voltage division resistor R2 is also coupled between the blocking capacitor C2 and the connecting seat 42 corresponding to the antenna 21, and the second end of the second voltage division resistor R2 is connected between C1 and the connecting seat 41 corresponding to the radio frequency circuit 11 through the choke inductance L1, so the second end of the second voltage division resistor R2 is also coupled with the cable 31, and the second voltage division resistor R2 is connected in parallel with the cable 31.

[0173] It should be noted that the pull-up resistor R0, the first voltage dividing resistor R1 and the second voltage dividing resistor R2 can all be kilo-ohm resistors, for example, the resistance of the pull-up resistor R0, the first voltage dividing resistor R1 and the second voltage dividing resistor R2 can all be greater than or equal to 1KΩ, so that the voltage division of each cable can be ignored, and the accuracy of detecting whether each cable is connected or disconnected can be improved. For example, the direct current voltage source V0 can provide a voltage of 1.8 volts (V), the pull-up resistor R0 can be 20 kilo-ohms (KΩ), the first voltage dividing resistor R1 can also be 20KΩ, and the second voltage dividing resistor R2 can be 10KΩ. Of course, the specific parameter values of the pull-up resistor R0, the first voltage dividing resistor R1 and the second voltage dividing resistor R2 can be set according to the impedance of the electronic device and the built-in direct current voltage source V0, and the specific parameter values of the above-mentioned resistors are not limited in the embodiments of the present application.

[0174] Figure 7 is a simplified schematic diagram of a radio frequency system provided by the embodiments of the present application, which omits the radio frequency circuit, the antenna, the direct current blocking capacitor and the choke inductance shown in Figure 6 . Referring to Figure 7 , if the cable 31 and the cable 32 are both connected or disconnected, the second voltage dividing resistor R2 in the radio frequency system can be short-circuited by the cable 31, and the first voltage dividing resistor R1 can be short-circuited by the cable 32, and the current can flow through the pull-up resistor R0, the cable 31 and the cable 32, thereby forming a loop to the ground potential GND1.

[0175] Therefore, the potential of the detection point at this time is V1=0, wherein V1 is the pre-set potential of the detection point.

[0176] However, if the cable 31 is connected or disconnected and the cable 32 is normally connected, a simplified circuit as shown in Figure 8 can be formed, Figure 8 is another simplified schematic diagram of a radio frequency system provided by the embodiments of the present application, referring to Figure 8 , the cable 31 is connected or disconnected, and the current flows through the second voltage dividing resistor R2 from the pull-up resistor R0. However, the cable 32 is normally connected, and the first voltage dividing resistor R1 is short-circuited by the cable 32. After flowing through the second voltage dividing resistor R2, the current can reach the ground potential GND1 through the cable 32.

[0177] Therefore, the potential of the detection point at this time is V2=V*R2 / (R0+R2), wherein V2 is the pre-set potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R2 is the resistance value corresponding to the second voltage dividing resistor R2.

[0178] Similarly, if the cable 31 is normally connected and the cable 32 is connected or disconnected, a simplified circuit as shown inFigure 9 The simplified circuit shown is Figure 9 is another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application, referring to Figure 9 , cable 31 is normally connected, and the second voltage dividing resistor R2 is short-circuited by cable 31. However, cable 32 is disconnected, and after flowing through pull-up resistor R0 and cable 31, the current can only flow through the first voltage dividing resistor R1 to reach ground potential GND2.

[0179] Therefore, the potential of the detection point at this time is V3=V*R1 / (R0+R1), where V3 is the potential of the detection point preset, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to pull-up resistor R0, and R1 is the resistance value corresponding to the first voltage dividing resistor R1.

[0180] In addition, if cable 31 and cable 32 are both disconnected, a simplified circuit as shown in Figure 10 can be formed, Figure 10 is another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application, referring to Figure 10 , after cable 31 and cable 32 are both disconnected, after flowing through pull-up resistor R0, the current can only flow through the second voltage dividing resistor R2 and the first voltage dividing resistor R1 to reach ground potential GND2.

[0181] Therefore, the potential of the detection point at this time is V4=V*(R1+R2) / (R0+R1+R2), where V4 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to pull-up resistor R0, R1 is the resistance value corresponding to the first voltage dividing resistor R1, and R2 is the resistance value corresponding to the second voltage dividing resistor R2.

[0182] For example, if the potential of the direct current voltage source V0 is 1.8V, the resistance value of pull-up resistor R0 is 20KΩ, the resistance value of the first voltage dividing resistor R1 is 20KΩ, the resistance value of the second voltage dividing resistor R2 is 10KΩ, the capacitance value of each direct current blocking capacitor is C1=C2=C3=C4=33pF (pico Farad), the capacitance value of the ground capacitor C5 is 20pF, and the inductance value of each choke inductor is L1=L2=L3=L4=68nH (nano Henry), according to the above formula, V1=0V, V2=0.6V, V3=0.9V, and V4=1.08V can be calculated.

[0183] Further, referring to Figure 11The voltage dividing module 601 can further include a ground capacitor C5. By arranging the ground capacitor C5 between the two radio frequency circuits, the radio frequency signal in the two radio frequency circuits and entering the radio frequency system can be guided to the ground potential GND2 through the ground capacitor C5, so that the radio frequency signal in one radio frequency circuit is prevented from entering another radio frequency circuit through the radio frequency system, thereby improving the isolation between the cable 31 and the cable 32.

[0184] The ground capacitor C5 is connected in parallel with the first voltage dividing resistor R1, that is, a first end of the ground capacitor C5 is coupled with the ground potential GND2, and a second end of the ground capacitor C5 is coupled with a second end of the first voltage dividing resistor R1 and a second end of the second voltage dividing resistor R2, respectively.

[0185] It should be noted that in the above embodiment, the power supply module 603 of the radio frequency system is located on the sub-board of the electronic device, and the detection module 602 and the voltage dividing module 601 of the radio frequency system are located on the main board of the electronic device. However, in actual application, the positions of each circuit module of the radio frequency system can be adjusted according to the layout design of the main board and the sub-board. For example, the power supply module 603 and the detection module 602 can be arranged on the sub-board, and the voltage dividing module 601 can be arranged on the main board; or the power supply module 603 and the detection module 602 can be arranged on the main board, and the voltage dividing module 601 can be arranged on the sub-board; or the power supply module 603 can be arranged on the main board, and the voltage dividing module 601 and the detection module 602 can be arranged on the sub-board; or the voltage dividing module 601, the detection module 602 and the power supply module 603 can all be arranged on the main board or the sub-board. The position of each circuit module of the radio frequency system is not limited in the embodiment of the present application.

[0186] Further, Figure 6 and Figure 11 As shown in the radio frequency system, the voltage dividing module 601 is coupled between the blocking capacitor C1 and the connecting seat 41 corresponding to the radio frequency circuit 11 through the choke inductor L1, and is coupled between the blocking capacitor C3 and the connecting seat 43 corresponding to the radio frequency circuit 12 through the choke inductor L3.

[0187] In other embodiments, when the voltage dividing module 601 is coupled between the blocking capacitor C1 and the connecting seat 41 corresponding to the radio frequency circuit 11 through the choke inductor L1, the voltage dividing module 601 can be coupled between the blocking capacitor C4 and the connecting seat 44 corresponding to the antenna 22 through the choke inductor L3, and the first end of the choke inductor L4 is coupled between the blocking capacitor C3 and the connecting seat 43 corresponding to the radio frequency circuit 12, and the second end can be coupled with the ground potential GND1.

[0188] Alternatively, when the voltage divider module 601 is coupled between the DC blocking capacitor C3 and the connector 43 corresponding to the RF circuit 12 through the choke inductor L3, the voltage divider module 601 can be coupled between the DC blocking capacitor C2 and the connector 42 corresponding to the antenna 21 through the choke inductor L1, and the power supply module 603 can be coupled between the DC blocking capacitor C1 and the connector 41 corresponding to the RF circuit 11 through the choke inductor L2.

[0189] Of course, the voltage divider module 601 may also be coupled between two adjacent cables in other ways, and the embodiment of the present application does not limit the coupling method of the cables.

[0190] In addition, when the power supply module 603 and the detection module 602 are respectively located on the main board and the sub-board of the electronic device (such as the power supply module 603 is located on the main board and the detection module 602 is located on the sub-board, or the power supply module 603 is located on the sub-board and the detection module 602 is located on the main board), the power supply module 603 and the detection module 602 can be coupled through a flexible printed circuit (FPC). FPC has the advantages of light weight and thin thickness, and FPC can be freely bent and folded, so that the positional relationship between the main board and the sub-board can be flexibly adjusted. Of course, the power supply module 603 and the detection module 602 can also be coupled through a signal line, which is not limited in the embodiments of the present application.

[0191] The above Figure 6 to Figure 11 In the embodiment shown, the electronic device includes two cables as an example for description. However, in actual application, the electronic device may include multiple cables. The following description is based on the example of the electronic device including three cables (cable 31, cable 32 and cable 33). Figure 12 , Figure 12 This is a circuit framework diagram of another radio frequency system provided in an embodiment of the present application. The radio frequency system may include: a first voltage divider module 1201, a second voltage divider module 1202, a detection module 1203 and a power supply module 1204.

[0192] The output end of the power supply module 1204 can be coupled with the detection module 1203 through the first node A, the power supply module 1204 can also be coupled with the first voltage division module 1201 through the cable 31, and the first voltage division module 1201 can be coupled with the second voltage division module 1202 through the cable 32. That is, the two ends of the cable 31 can be coupled with the first voltage division module 1201. When the cable 31 is disconnected, a circuit loop can be formed through the first voltage division module 1201. Similarly, the two ends of the cable 32 can also be coupled with the second voltage division module 1202, and when the cable 32 is disconnected, a circuit loop can be formed through the second voltage division module 1202. In addition, the two ends of the cable 33 can be coupled with the cable 32 and the ground potential GND1 respectively.

[0193] Moreover, similar to the radio frequency system shown in Figure 6 , the radio frequency system in the embodiment of the present application can also include: a first node (A), a plurality of DC blocking capacitors (C1, C2, C3, C4, C6 and C7) and a plurality of choke inductors (L1, L2, L3, L4, L5, L6 and L7). Among them, the plurality of DC blocking capacitors C1, C2, C3 and C4, and the plurality of choke inductors L1, L2 and L3 are consistent with the arrangement shown in Figure 6 , and will not be repeated here. However, the choke inductor L4 shown in Figure 6 is no longer located between the cable 32 and the ground potential GND1, but is located between the cable 33 and the ground potential GND1 as shown in Figure 12 .

[0194] Moreover, other DC blocking capacitors (C6 and C7) and choke inductors (L5, L6 and L7) are also added in the embodiment of the present application, the DC blocking capacitor C6 is arranged between the radio frequency circuit 13 and the corresponding connecting seat 45, the DC blocking capacitor C7 is arranged between the antenna 23 and the corresponding connecting seat 46; the choke inductor L5 and the choke inductor L6 are arranged between the second voltage division module 1202 and the cable 32, the choke inductor L5 and the choke inductor L6 are respectively connected at the two ends of the cable 32, and the choke inductor L7 is arranged between the second voltage division module 1202 and the cable 33.

[0195] Specifically, a first end of the choke inductor L4 is coupled between the DC blocking capacitor C6 and the connecting seat 45 corresponding to the radio frequency circuit 13, and a second end of the choke inductor L4 is coupled with the ground potential GND1; a first end of the choke inductor L5 is coupled between the DC blocking capacitor C3 and the connecting seat 43 corresponding to the radio frequency circuit 12, and a second end of the choke inductor L5 is coupled with the second voltage dividing module 1202; a first end of the choke inductor L6 is coupled between the DC blocking capacitor C4 and the connecting seat 44 corresponding to the antenna 22, and a second end of the choke inductor L6 is coupled with the second voltage dividing module 1202; a first end of the choke inductor L7 is coupled between the DC blocking capacitor C7 and the connecting seat 46 corresponding to the antenna 23, and a second end of the choke inductor L7 is coupled with the second voltage dividing module 1202.

[0196] In addition, the first voltage dividing module 1201, the detection module 1203 and the power supply module 1204 in the embodiment of the present application are similar to the voltage dividing module 601, the detection module 602 and the power supply module 603 shown in Figure 6 , and will not be described here again.

[0197] The second voltage dividing module 1202 in the embodiment of the present application is similar to the first voltage dividing module 1201, and reference can be made to Figure 12 , the second voltage dividing module 1202 can include a third voltage dividing resistor R3 and a fourth voltage dividing resistor R4. Wherein, a first end of the third voltage dividing resistor R3 is coupled with the ground potential GND3, a second end of the third voltage dividing resistor R3 is coupled with a second end of the fourth voltage dividing resistor R4, and a first end of the fourth voltage dividing resistor R4 is coupled with the choke inductor L5. Moreover, the second end of the third voltage dividing resistor R3 and the second end of the fourth voltage dividing resistor R4 can both be coupled between the choke inductor L6 and the choke inductor L7.

[0198] In addition, the parameter value of the third voltage dividing resistor R3 can refer to the parameter value of the first voltage dividing resistor R1 in the first voltage dividing module 1201 in the embodiment of the present application, and the parameter value of the fourth voltage dividing resistor R4 can refer to the parameter value of the second voltage dividing resistor R2 in the first voltage dividing module 1201 in the embodiment of the present application, and will not be described here again.

[0199] Figure 13 is a simplified schematic diagram of a radio frequency system provided by the embodiment of the present application, which omits the radio frequency circuit, the antenna, the DC blocking capacitor and the choke inductor shown in Figure 12 . Reference can be made to Figure 13If the cable 31, the cable 32 and the cable 33 are all disconnected, the second voltage dividing resistor R2 in the radio frequency system is short-circuited by the cable 31, the fourth voltage dividing resistor R4 is short-circuited by the cable 32, the third voltage dividing resistor R3 is short-circuited by the cable 33, and the first voltage dividing resistor R1 is short-circuited by the cable 32 and the cable 33. The current flows through the pull-up resistor R0, the cable 31, the cable 32 and the cable 33, thereby forming a loop to the ground potential GND1.

[0200] Therefore, the potential of the detection point at this time is V5=0, where V5 is the potential of the detection point.

[0201] However, if the cable 31 is connected and disconnected, and the cable 32 and the cable 33 are normally connected, a simplified circuit as shown in FIG. 6 can be formed, Figure 14 Figure 14 is another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application, referring to FIG. 7, Figure 14 the cable 31 is disconnected, and the current flows through the second voltage dividing resistor R2 from the pull-up resistor R0. However, the cable 32 and the cable 33 are not disconnected, and the first voltage dividing resistor R1, the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 are short-circuited. After flowing through the second voltage dividing resistor R2, the current can reach the ground potential GND1 through the cable 32 and the cable 33.

[0202] Therefore, the potential of the detection point at this time is V6=V*R2 / (R0+R2), where V6 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R2 is the resistance value corresponding to the second voltage dividing resistor R2.

[0203] Similarly, if the cable 31 and the cable 33 are normally connected, and the cable 32 is connected and disconnected, a simplified circuit as shown in FIG. 8 can be formed, Figure 15 Figure 15 is still another simplified schematic diagram of a radio frequency system provided by an embodiment of the present application, referring to FIG. 9, Figure 15 the cable 31 and the cable 33 are normally connected, the second voltage dividing resistor R2 is short-circuited by the cable 31, and the third voltage dividing resistor R3 is short-circuited by the cable 33. The cable 32 is connected and disconnected, and the first voltage dividing resistor R1 and the fourth voltage dividing resistor R4 are connected in parallel.

[0204] ​​Therefore, the potential of the detection point at this time is V7=V*Rx1 / (R0+Rx1), where V7 is the potential of the detection point, V is the potential of the DC voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, Rx1 is the equivalent resistance of the first voltage divider resistor R1 and the fourth voltage divider resistor R4 connected in parallel, Rx1=R1*R4 / (R1+R4), R1 is the resistance value corresponding to the first voltage divider resistor R1, and R4 is the resistance value corresponding to the fourth voltage divider resistor R4.

[0205] Similarly, if cable31 and cable32 are connected normally and cable33 is disconnected, the following situation can be formed: Figure 16 The simplified circuit shown, Figure 16 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application, see Figure 16 , cable 31 and cable 32 are normally connected, the second voltage-dividing resistor R2 is short-circuited by cable 31, and the fourth voltage-dividing resistor R4 is short-circuited by cable 32. Cable 33 is disconnected, and the first voltage-dividing resistor R1 and the third voltage-dividing resistor R3 are connected in parallel.

[0206] Therefore, the potential of the detection point at this time is V8 = V0*Rx2 / (R0+Rx2), where V8 is the potential of the detection point, V is the potential of the DC voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, Rx2 is the equivalent resistance of the first voltage divider resistor R1 and the third voltage divider resistor R3 connected in parallel, Rx2 = R1*R3 / (R1+R3), R1 is the resistance value corresponding to the first voltage divider resistor R1, and R3 is the resistance value corresponding to the third voltage divider resistor R3.

[0207] The above is only the potential detected by the pre-set detection point when the three cables of the electronic device are not disconnected or any one cable is disconnected. However, in actual application, the electronic device may also have any two of the three cables disconnected, or all three cables disconnected. Figure 17 to Figure 20 , respectively showing simplified schematic diagrams of the corresponding radio frequency systems when two cables or three cables are disconnected.

[0208] Figure 17 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application. Figure 17 As shown, cable 31 and cable 32 of the electronic device are disconnected, cable 33 is normally connected, the third voltage-dividing resistor R3 is short-circuited by cable 33, the first voltage-dividing resistor R1 and the fourth voltage-dividing resistor R4 are connected in parallel, and the second voltage-dividing resistor R2 is connected in series with the parallel first voltage-dividing resistor R1 and the fourth voltage-dividing resistor R4.

[0209] Therefore, the potential of the detection point at this time is V9=V*(R2+Rx3) / (R0+R2+Rx3), wherein V9 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, Rx3 is the equivalent resistance of the parallel connection of the first voltage dividing resistor R1 and the fourth voltage dividing resistor R4, Rx3=R1*R4 / (R1+R4), R1 is the resistance value corresponding to the first voltage dividing resistor R1, and R4 is the resistance value corresponding to the fourth voltage dividing resistor R4.

[0210] Figure 18 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, as shown in Figure 18 the cable 32 and the cable 33 of the electronic device are disconnected, the cable 31 is normally connected, the second voltage dividing resistor R2 is short-circuited by the cable 31, the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 are connected in series, and the first voltage dividing resistor R1 is connected in parallel with the series connection of the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4.

[0211] Therefore, the potential of the detection point at this time is V10=V*Rx4 / (R0+Rx4), wherein V10 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, Rx4 is the equivalent resistance of the parallel connection of the first voltage dividing resistor R1 and the series connection of the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4, Rx4=R1*(R3+R4) / (R1+R3+R4), R1 is the resistance value corresponding to the first voltage dividing resistor R1, R3 is the resistance value corresponding to the third voltage dividing resistor R3, and R4 is the resistance value corresponding to the fourth voltage dividing resistor R4.

[0212] Figure 19 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, as shown in Figure 19 the cable 31 and the cable 33 of the electronic device are disconnected, the cable 32 is normally connected, the fourth voltage dividing resistor R4 is short-circuited by the cable 32, the first voltage dividing resistor R1 and the third voltage dividing resistor R3 are connected in parallel, and the second voltage dividing resistor R2 is connected in series with the parallel connection of the first voltage dividing resistor R1 and the third voltage dividing resistor R3.

[0213] Therefore, the potential of the detection point at this time is V11=V*(R2+Rx5) / (R0+R2+Rx5), wherein V11 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, Rx5 is the equivalent resistance of the parallel connection of the first voltage dividing resistor R1 and the third voltage dividing resistor R3, Rx5=R1*R3 / (R1+R3), R1 is the resistance value corresponding to the first voltage dividing resistor R1, and R3 is the resistance value corresponding to the third voltage dividing resistor R3.

[0214] Figure 20 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, as shown in Figure 20 cable 31, cable 32 and cable 33 of the electronic device are disconnected, and the first voltage dividing resistor R1 is connected in parallel with the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 in series.

[0215] Therefore, the potential of the detection point at this time is V12 = V * (R2 + Rx6) / (R0 + R2 + Rx6), where V12 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, Rx6 is the equivalent resistance of the first voltage dividing resistor R1 connected in parallel with the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 in series, Rx6 = R1 * (R3 + R4) / (R1 + R3 + R4), R1 is the resistance value corresponding to the first voltage dividing resistor R1, R3 is the resistance value corresponding to the third voltage dividing resistor R3, and R4 is the resistance value corresponding to the fourth voltage dividing resistor R4.

[0216] Further, referring to Figure 21 , the first voltage dividing module 1201 can further include a ground capacitor C5 connected in parallel with the first voltage dividing resistor R1 to improve the isolation degree between cable 31 and cable 32. Similarly, the second voltage dividing module 1202 can further include a ground capacitor C8 connected in parallel with the third voltage dividing resistor R3 to improve the isolation degree between cable 32 and cable 33.

[0217] The above-mentioned ground capacitor C5 and ground capacitor C8 are similar to the ground capacitor C5 shown in Figure 11 , and will not be described here again.

[0218] It should be noted that in the above-mentioned embodiments, the power supply module 1204 and the second voltage dividing module 1202 of the radio frequency system are located on the sub-board of the electronic device, while the detection module 1203 and the first voltage dividing module 1201 of the radio frequency system are located on the main board of the electronic device. However, in actual application, the positions of each circuit module of the radio frequency system can be adjusted according to the layout design of the main board and the sub-board, for example, the positions of each circuit module can be adjusted according to the embodiments corresponding to Figure 6 to Figure 11 , and the present embodiment does not limit the positions of each circuit module.

[0219] Moreover, the first voltage dividing module 1201 and the second voltage dividing module 1202 can be coupled between two adjacent cables in different ways, for example, the different coupling ways of the voltage dividing module 601 in Figure 6 will not be described here again.

[0220] In addition, based on the radio frequency system as shown in Figure 12 , the radio frequency system can be further optimized to reduce components in the radio frequency system, reduce the complexity of the radio frequency system, and reduce the area occupied by the radio frequency system on the main board and the auxiliary board of the electronic device. For example, the first voltage division module 1201 in the radio frequency system can be optimized to remove the first voltage division resistor R1 in the first voltage division module 1201, and obtain a radio frequency system as shown in Figure 22 .

[0221] Figure 22 is another circuit framework diagram of a radio frequency system provided by the embodiments of the present application, referring to Figure 22 , the radio frequency system can include a first voltage division module 2201, a second voltage division module 2202, a detection module 2203, and a power supply module 2204. The radio frequency system can also include a plurality of DC blocking capacitors (C1, C2, C3, C4, C6, and C7) and a plurality of choke inductors (L1, L2, L3, L4, L5, L6, and L7). The power supply module 2204, the detection module 2203, the second voltage division module 2202, the plurality of DC blocking capacitors, and the plurality of choke inductors are similar to the radio frequency system as shown in Figure 12 , and will not be described here.

[0222] However, unlike the radio frequency system as shown in Figure 12 , the radio frequency system as shown in Figure 22 includes only a second voltage division resistor R2 in the first voltage division module 2201. The first end of the second voltage division resistor R2 is coupled to the second end of the pull-up resistor R0 in the power supply module 2204, and the second end of the second voltage division resistor R2 is coupled between the choke inductor L1 and the choke inductor L3.

[0223] Figure 23 is a simplified schematic diagram of a radio frequency system provided by the embodiments of the present application, which omits the radio frequency circuit, the antenna, the DC blocking capacitor, and the choke inductor as shown in Figure 22 . Referring to Figure 23 , if the cable 31, the cable 32, and the cable 33 are all not connected or disconnected, the second voltage division resistor R2 in the radio frequency system is short-circuited by the cable 31, the fourth voltage division resistor R4 is short-circuited by the cable 32, and the third voltage division resistor R3 is short-circuited by the cable 33. The current flows through the pull-up resistor R0, the cable 31, the cable 32, and the cable 33, thereby forming a loop to the ground potential GND1.

[0224] Therefore, at this time, the potential of the detection point is V13 = 0, where V13 is the potential of the detection point.

[0225] However, if cable31 is disconnected and cable32 and cable33 are connected normally, the following situation can be formed: Figure 24 The simplified circuit shown, Figure 24 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application, see Figure 24 , cable 31 is disconnected, and current flows from pull-up resistor R0 through second voltage-divider resistor R2. However, cables 32 and 33 are not disconnected, so third voltage-divider resistor R3 is short-circuited by cable 33, and fourth voltage-divider resistor R4 is short-circuited by cable 32. After flowing through second voltage-divider resistor R2, current flows through cables 32 and 33 to ground potential GND1.

[0226] Therefore, the potential of the detection point at this time is V14=V*R2 / (R0+R2), where V14 is the potential of the detection point, V is the potential of the DC voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R2 is the resistance value corresponding to the second voltage divider resistor R2.

[0227] Similarly, if cable31 and cable33 are connected normally and cable32 is disconnected, the following situation can be formed: Figure 25 The simplified circuit shown, Figure 25 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application, see Figure 25 , cable 31 and cable 33 are connected normally, the second voltage-dividing resistor R2 is short-circuited by cable 31, and the third voltage-dividing resistor R3 is short-circuited by cable 33. Cable 32 is disconnected, and only the fourth voltage-dividing resistor R4 is connected.

[0228] Therefore, the potential of the detection point at this time is V15=V*R4 / (R0+R4), where V15 is the potential of the detection point, V is the potential of the DC voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R4 is the resistance value corresponding to the fourth voltage divider resistor R4.

[0229] Similarly, if cable31 and cable32 are connected normally and cable33 is disconnected, the following situation can be formed: Figure 26 The simplified circuit shown, Figure 26 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application, see Figure 26 Cable 31 and cable 32 are connected normally, the second voltage-dividing resistor R2 is short-circuited by cable 31, and the fourth voltage-dividing resistor R4 is short-circuited by cable 32. Cable 33 is disconnected, and only the third voltage-dividing resistor R3 is connected to the RF system.

[0230] Therefore, the potential of the detection point at this time is V16=V*R3 / (R0+R3), where V16 is the potential of the detection point, V is the potential of the DC voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R3 is the resistance value corresponding to the third voltage divider resistor R3.

[0231] and Figure 17 to Figure 20 For corresponding reference, see Figure 27 to Figure 30 , showing when 2 cables or 3 cables are disconnected, Figure 22 A simplified schematic diagram of the RF system is shown.

[0232] Figure 27 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application. Figure 27 As shown, cable 31 and cable 32 of the electronic device are disconnected, cable 33 is normally connected, the third voltage-dividing resistor R3 is short-circuited by cable 33 , and the second voltage-dividing resistor R2 is connected in series with the fourth voltage-dividing resistor R4 .

[0233] Therefore, the potential of the detection point at this time is V17 = V*(R2+R4) / (R0+R2+R4), where V17 is the potential of the detection point, V is the potential of the DC voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, R2 is the resistance value corresponding to the second voltage divider resistor R2, and R4 is the resistance value corresponding to the fourth voltage divider resistor R4.

[0234] Figure 28 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application. Figure 28 As shown, cable 32 and cable 33 of the electronic device are disconnected, cable 31 is normally connected, the second voltage-dividing resistor R2 is short-circuited by cable 31, and the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 are connected in series.

[0235] Therefore, the potential of the detection point at this time is V18 = V*(R3+R4) / (R0+R3+R4), where V18 is the potential of the detection point, V is the potential of the DC voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, R3 is the resistance value corresponding to the third voltage divider resistor R3, and R4 is the resistance value corresponding to the fourth voltage divider resistor R4.

[0236] Figure 29 This is a simplified schematic diagram of another radio frequency system provided in an embodiment of the present application. Figure 29 As shown, cable 31 and cable 33 of the electronic device are disconnected, cable 32 is normally connected, the fourth voltage-dividing resistor R4 is short-circuited by cable 32, and the second voltage-dividing resistor R2 is connected in series with the third voltage-dividing resistor R3.

[0237] Therefore, the potential of the detection point at this time is V 19 = V * (R2+R3) / (R0+R2+R3), wherein V 19 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, and R3 is the resistance value corresponding to the third voltage dividing resistor R3.

[0238] Figure 30 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, as shown in Figure 30 , the cable 31, the cable 32 and the cable 33 of the electronic device are all disconnected, and the second voltage dividing resistor R2, the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 are connected in series.

[0239] Therefore, the potential of the detection point at this time is V 20 = V * (R2+R3+R4) / (R0+R2+R3+R4), wherein V 20 is the potential of the detection point, V is the potential of the direct current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, R3 is the resistance value corresponding to the third voltage dividing resistor R3, and R4 is the resistance value corresponding to the fourth voltage dividing resistor R4.

[0240] Further, referring to Figure 31 , the first voltage dividing module 2201 can further include a ground capacitor C5, which is arranged between the second end of the second voltage dividing resistor R2 and the ground potential GND2, so as to improve the isolation degree between the cable 31 and the cable 32. Similarly, the second voltage dividing module 2202 can further include a ground capacitor C8, which is connected in parallel with the third voltage dividing resistor R3, so as to improve the isolation degree between the cable 32 and the cable 33. The ground capacitor C5 and the ground capacitor C8 are similar to the ground capacitor C5 and the ground capacitor C8 shown in Figure 22 , which will not be described herein again.

[0241] It should be noted that, in the above embodiments, the power supply module 2204 and the second voltage dividing module 2202 of the radio frequency system are located on the sub-board of the electronic device, while the detection module 2203 and the first voltage dividing module 2201 of the radio frequency system are located on the main board of the electronic device. However, in actual applications, the positions of each circuit module of the radio frequency system can be adjusted according to the layout design of the main board and the sub-board, for example, the positions of each circuit module can be adjusted according to the embodiments corresponding to Figure 6 to Figure 11 , and the present embodiments do not limit the positions of each circuit module.

[0242] Moreover, the first voltage dividing module 2201 and the second voltage dividing module 2202 can be coupled between two adjacent cables in different ways, which can be referred to Figure 6The different coupling manners corresponding to the voltage division module 601 are not described herein again.

[0243] Further, when the power supply module 2204 and the detection module 2203 are located on the main board and the sub-board of the electronic device respectively (for example, the power supply module 2204 is located on the main board and the detection module 2203 is located on the sub-board, or the power supply module 2204 is located on the sub-board and the detection module 2203 is located on the main board), the power supply module 2204 and the detection module 2203 can be coupled through the FPC or the signal line, and the embodiments of the present application do not limit this.

[0244] In addition, in actual application, the above-mentioned radio frequency system is applied in the electronic device, and a certain research and development period is required for updating and verifying the application program matched with the radio frequency system. Therefore, before the application program matched with the radio frequency system is updated and verified, the existing application program of the electronic device still needs to realize the antenna in-position detection mechanism through the GPIO, that is, the radio frequency communication of the antenna of the electronic device is affected by detecting whether each cable is abnormally connected.

[0245] Therefore, it is still necessary to add the radio frequency system as shown in Figure 6 、 Figure 11 、 Figure 12 、 Figure 21 、 Figure 22 and Figure 31 in the electronic device with the GPIO, in order to realize different functions. For example, taking the radio frequency system as shown in Figure 11 as an example, that is, when the electronic device includes the GPIO and two cables (cable 31 and cable 32), the radio frequency system as shown in Figure 11 is added, to obtain another radio frequency system as shown in Figure 32 .

[0246] Referring to Figure 32 , the radio frequency system can include a GPIO detection module 3201, a GPIO power supply module 3202, a voltage division module 3203, a detection module 3204, and a power supply module 3205. Moreover, the radio frequency system can further include a plurality of DC blocking capacitors (C1, C2, C3, and C4), a plurality of choke inductors (L1, L2, L3, and L4), and a ground capacitor (C5).

[0247] The coupling manners of the voltage division module 3203, the detection module 3204, the power supply module 3205, the plurality of DC blocking capacitors, the plurality of choke inductors, and the ground capacitor are similar to the coupling manners of the voltage division module 601, the detection module 602, the power supply module 603, the plurality of DC blocking capacitors, the plurality of choke inductors, and the ground capacitor as shown in Figure 11 , and are not described herein again.

[0248] Further, the GPIO power supply module 3202 is similar to the power supply module 3205, and the GPIO detection module 3201 is similar to the detection module 3204. The GPIO power supply module 3202 can supply voltage to each cable in the electronic device, and the GPIO detection module 3201 can sample the voltage to determine whether each cable in the electronic device is connected or disconnected.

[0249] In the above embodiment, the GPIO power supply module 3202 and the power supply module 3205 of the radio frequency system are located on the sub-board of the electronic device, and the GPIO detection module 3201, the detection module 3204, and the voltage division module 3203 of the radio frequency system are located on the main board of the electronic device. However, in actual applications, the positions of each circuit module of the radio frequency system can be adjusted according to the layout design of the main board and the sub-board. For example, the positions of each circuit module of the radio frequency system can be adjusted according to the positions of each circuit module of the radio frequency system in the embodiments of Figure 6 to Figure 11 The positions of each circuit module of the radio frequency system in the corresponding embodiments are adjusted, and the positions of each circuit module of the radio frequency system in the embodiments are not limited.

[0250] Further, the voltage division module 3203 can be coupled between two adjacent cables in different ways. For example, the voltage division module 601 in the embodiment of Figure 6 can be coupled in different ways, which will not be described here.

[0251] In addition, if the detection module 3204 and the GPIO detection module 3201 of the radio frequency system are located on the main board or the sub-board of the electronic device, the detection module 3204 can reuse the wiring of the GPIO detection module 3201 to realize the wiring of the detection module 3204, so as to reduce the hardware cost of the wiring and the complexity of the radio frequency system.

[0252] For example, the detection module 1604 can identify the sizes of a plurality of potentials according to the collected potentials, so that the processor can determine the connection state of each cable according to the identified potential size. The GPIO detection module 1601 can determine the high or low potential according to the collected potential, that is, determine the high potential or the low potential, and the processor can determine whether the cable is connected or disconnected according to the high potential or the low potential.

[0253] It should be noted that the radio frequency system for detecting whether the cable is connected or disconnected can be expanded in actual applications, and a radio frequency system for detecting whether the cable is connected or disconnected can be obtained, as shown in Figure 33 For example, the radio frequency system for detecting whether the cable is connected or disconnected can be expanded in actual applications, and a radio frequency system for detecting whether the cable is connected or disconnected can be obtained, as shown in Figure 33, shows the circuit structure diagram of the radio frequency system when the electronic device includes 2 cables, which can include multiple circuit modules such as the voltage division module 3301, the detection module 3302, and the power supply module 3303, and the radio frequency system can also include the first node (A), multiple direct current blocking capacitors (C1, C2, C3, and C4), and multiple choke inductors (L1, L2, L3, and L4).

[0254] Among them, the voltage division module 3301, the detection module 3302, and the power supply module 3303 are similar to the voltage division module 601, the detection module 602, and the power supply module 603, and will not be repeated here.

[0255] However, in addition to the first voltage division resistor R1 and the second voltage division resistor R2, the voltage division module 3301 can also include a fifth voltage division resistor R5, which is coupled in series between the cable 31 and the cable 32.

[0256] In addition, the process of determining the potential of the detection point and determining the connection state of each cable through the detection module 3302 is similar to the foregoing, and will not be repeated here.

[0257] Further, Figure 34 shows another combined radio frequency system, see Figure 34 , Figure 34 shows the circuit structure diagram of the radio frequency system when including 3 cables, which can include multiple circuit modules such as the first voltage division module 3401, the second voltage division module 3402, the detection module 3403, and the power supply module 3404, and the radio frequency system can also include the first node (A), multiple direct current blocking capacitors (C1, C2, C3, C4, C6, and C7), and multiple choke inductors (L1, L2, L3, L4, L5, L6, and L7).

[0258] Among them, the first voltage division module 3401, the second voltage division module 3402, the detection module 3403, and the power supply module 3404 are similar to the first voltage division module 1201, the second voltage division module 1202, the detection module 1203, and the power supply module 1204, and will not be repeated here.

[0259] Moreover, the newly added fifth voltage division resistor R5 in the first voltage division module 3401 can refer to the voltage division module 3301 shown in Figure 33 , and will not be repeated here.

[0260] In addition, in addition to the third voltage division resistor R3 and the fourth voltage division resistor R4, the second voltage division module 3402 can also include a sixth voltage division resistor R6, which is coupled in series between the cable 32 and the cable 33.

[0261] It should be noted that the process of determining the potential of the detection point by the detection module 3403 and determining the connection state of each cable is similar to the foregoing, and will not be repeated here.

[0262] In summary, the radio frequency system provided by the embodiment of the present application is provided with at least one voltage division module coupled with the power supply module, and each voltage division module is coupled in series, wherein each voltage division module corresponds to one cable, and each voltage division module is coupled at both ends of the corresponding cable. If at least one cable is disconnected, the current can flow through the voltage division module corresponding to the cable to the adjacent next circuit module, so that the resistance in the voltage division module is divided, and the detection module connected with the power supply module can also detect the changing potential, so that each cable disconnected can be determined according to the changing potential, without setting a GPIO proportional to the number of cables, which can reduce the hardware required for detecting whether each cable is disconnected, and reduce the cost required for detecting whether each cable is disconnected.

[0263] Moreover, the cable can be coupled in series between the power supply module and the voltage division module, between the voltage division module and the ground potential, and between two adjacent voltage division modules, and the blocking capacitor and the choke inductor can be set between the radio frequency system and the radio frequency circuit, and between the radio frequency system and the antenna, which can prevent the radio frequency signal in the radio frequency circuit from entering the radio frequency system, and can also prevent the current in the radio frequency system from entering the radio frequency circuit, thereby improving the isolation between the radio frequency system and the radio frequency circuit, and improving the accuracy of the radio frequency system.

[0264] In addition, by setting the ground capacitor in the voltage division module, the ground capacitor is located between the two radio frequency circuits, so that the radio frequency signal in the radio frequency circuit that enters the radio frequency system can be guided to the ground potential through the ground capacitor, thereby preventing the radio frequency signal in one radio frequency circuit from entering another radio frequency circuit through the radio frequency system, and thereby improving the isolation between the two radio frequency circuits.

[0265] Further, based on the electronic device including the GPIO, the radio frequency system provided by the embodiment of the present application can be added in combination with the original GPIO in a way of wire multiplexing to reduce the wire and save hardware resources. Moreover, based on different functions of the original GPIO, the radio frequency system can determine whether each cable of the electronic device is disconnected, thereby enriching the functions of the radio frequency system and improving the diversity of the functions implemented by the radio frequency system.

[0266] Figure 35 is a schematic flowchart of a detection method provided by the embodiment of the present application, as an example but not limitation, the method can be applied to the radio frequency system as described above. Figure 2The processor shown in the radio frequency system is connected to the processor shown in Figure 35 The method comprises:

[0267] Step 3501, obtaining the potential information corresponding to the detection point in the radio frequency system.

[0268] The potential information is used to represent the current potential level of the detection point. Moreover, the detection point of the radio frequency system can be the second end of the pull-up resistor of the power supply module in the radio frequency system, or other positions that can change the potential with the change of the coupling mode of the circuit in the radio frequency system. The embodiments of the present application do not limit the detection point of the radio frequency system.

[0269] In the process of producing electronic devices, the cable can be installed on the connecting seat of the electronic device, but due to too many connecting seats, multiple cable connections may be disconnected. Or, in the process of using electronic devices, the electronic device may be affected by collision and impact, causing the cable in the electronic device to fall off from the connecting seat, resulting in the decline of the communication quality of the electronic device, or the inability to perform radio frequency communication.

[0270] The embodiments of the present application provide a detection method for detecting whether each cable in the electronic device is abnormal, that is, detecting whether each cable is connected incorrectly or disconnected, so as to store and / or remind the information of the abnormal cable.

[0271] In the process of detecting whether the cable is abnormal, the processor can combine Figure 2 The radio frequency system shown in the radio frequency system, obtain the potential information collected by the detection module in the radio frequency system, so that in the subsequent steps, the processor can determine whether each cable of the electronic device is abnormal according to the potential information.

[0272] For example, the processor can continuously obtain the potential information sent by the detection module in the radio frequency system, or periodically obtain the potential information sent by the detection module. The period of obtaining the potential information can be adjusted according to the circuit of the detection module, and the embodiments of the present application do not limit the way of obtaining the potential information.

[0273] Step 3502, determining the target preset potential matched with the potential information from a plurality of preset potentials.

[0274] When any one of the cables of the electronic device is abnormal, the current flow direction in the radio frequency system coupled with each cable changes, the voltage division of each voltage division resistor in the radio frequency system also changes accordingly, and the potential of the detection point in the radio frequency system also changes. Correspondingly, the processor can store each potential that can be detected by the detection point as a preset potential, so that in the subsequent step, the target preset potential matched can be used to determine the cable of the electronic device that is abnormal.

[0275] The number of preset potentials stored in the processor is proportional to the number of cables in the electronic device. The more cables in the electronic device, the more preset potentials stored in the processor.

[0276] In a possible implementation, after the processor obtains the potential information detected by the detection module, the processor can compare the potential indicated by the potential information with the plurality of preset potentials stored in advance, and then determine the target preset potential matched with the potential information from the plurality of comparison results.

[0277] For example, the processor can subtract each preset potential from the potential indicated by the potential information, take the calculated difference as a comparison result, and then determine the target comparison result with the smallest absolute value of the parameter value from the plurality of comparison results. Then, the preset potential corresponding to the target comparison result can be taken as the target preset potential.

[0278] It should be noted that in actual application, the processor can pre-store a corresponding relationship between the preset potential and the connection state. The corresponding relationship can include a plurality of preset potentials and a plurality of connection states, and each preset potential corresponds to a connection state. For example, the connection state corresponding to the first preset potential in the corresponding relationship can be that the cable 31 and the cable 32 are connected in error, that is, the cable 31 and the cable 32 are reversed; and the connection state corresponding to the second preset potential can be that the cable 33 is disconnected, that is, at least one end of the cable 33 is detached from the corresponding connection seat.

[0279] Correspondingly, in the process of performing step 3502, the processor can obtain a plurality of preset potentials from the corresponding relationship, so that in the subsequent step, whether each cable of the electronic device is abnormal can be determined according to the connection state corresponding to each preset potential.

[0280] Step 3503, determining the target connection state corresponding to the target preset potential according to the preset corresponding relationship.

[0281] In a possible implementation, the processor can find, according to the target preset potential, a connection state corresponding to the target preset potential from the correspondence relationship, and then can take the corresponding connection state as a target connection state corresponding to the target preset potential, that is, take the connection state corresponding to the target preset potential as the target connection state corresponding to the potential information.

[0282] It should be noted that the processor can store the target connection state in a memory connected to the processor after determining the target connection state, so that when the electronic device is maintained, the user can determine that the cable of the electronic device is abnormal according to the target connection state stored in the memory, and facilitate the maintenance of the electronic device.

[0283] In addition, the processor can continue to perform step 3504 after performing step 3503. Of course, the processor can also perform other operations according to the target connection state, and the embodiments of the present application do not limit the operations performed by the processor according to the target connection state.

[0284] Step 3504, reminding the abnormal connection of the radio frequency connection line according to the target connection state.

[0285] After the processor determines the target connection state, if the target connection state indicates that the radio frequency connection line is connected abnormally, the processor can control the display screen and / or the loudspeaker connected to the processor to alarm the user, and timely remind the user that at least one cable of the electronic device is abnormal, so that the user can timely maintain the electronic device.

[0286] For example, the processor can obtain the pre-stored cable abnormal text, and control the display screen to display the cable abnormal text, such as the display screen can display "radio frequency connection line connection error, please check!", or can display "radio frequency connection line disconnection, please check!". Of course, the processor can also first obtain the pre-stored cable abnormal voice, and control the loudspeaker to play the cable abnormal voice, such as the loudspeaker can play "radio frequency connection line connection error, please check!", or can play "radio frequency connection line disconnection, please check!". Further, the display screen displays the cable abnormal text, and the loudspeaker can play the cable abnormal voice corresponding to the cable abnormal text at the same time.

[0287] In summary, the detection method provided in the embodiments of the present application obtains the potential information corresponding to the detection point in the radio frequency system, determines the target preset potential that matches the potential information from a plurality of preset preset potentials, and determines the target connection state corresponding to the target preset potential from the corresponding relationship, that is, whether each cable in the electronic device appears abnormal, and the abnormal type of each cable and the like. Through the preset potential corresponding to the abnormality of each cable, the cable that appears abnormal in the electronic device can be further accurately determined on the basis of determining that the cable appears abnormal, and the abnormal type of the cable appearing abnormal (such as disconnection or connection error) can also be determined, without setting the GPIO in direct proportion to the number of cables, so as to reduce the hardware cost of detecting the cable and improve the functional diversity and flexibility of detecting the cable.

[0288] The circuit architecture shown in Figure 1 to Figure 34 , and Figure 35 The method flow shown can be applied in an electronic device. The electronic device related to the embodiments of the present application is described below. Please refer to Figure 36 , Figure 36 is a structural schematic diagram of an electronic device provided by the embodiments of the present application.

[0289] The electronic device can include a processor 3610, an external memory interface 3620, an internal memory 3621, a universal serial bus (universal serial bus, USB) interface 3630, a charge management module 3640, a power management module 3641, a battery 3642, an antenna 21, an antenna 22, a mobile communication module 3650, a wireless communication module 3660, an audio module 3670, a loudspeaker 3670A, a receiver 3670B, a microphone 3670C, a headset interface 3670D, a sensor module 3680, a key 3690, a motor 3691, an indicator 3692, a camera 3693, a display screen 3694, and a subscriber identification module (subscriber identification module, SIM) card interface 3695, etc. The sensor module 3680 can include a pressure sensor 3680A, a gyroscope sensor 3680B, a barometric pressure sensor 3680C, a magnetic sensor 3680D, an acceleration sensor 3680E, a distance sensor 3680F, a proximity light sensor 3680G, a fingerprint sensor 3680H, a temperature sensor 3680J, a touch sensor 3680K, an ambient light sensor 3680L, a bone conduction sensor 3680M, etc.

[0290] It can be understood that the structural schematic of the embodiments of the present application does not constitute a specific limitation on the electronic device. In other embodiments of the present application, the electronic device can include more or fewer components than those shown, or combine certain components, or split certain components, or different arrangement of components. The components shown can be implemented in hardware, software, or a combination of software and hardware.

[0291] The processor 3610 can include one or more processing units, for example: the processor 3610 can include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units can be independent devices, or can be integrated in one or more processors.

[0292] Among them, the controller can be the nerve center and command center of the electronic device. The controller can generate operation control signals according to instruction operation codes and timing signals to complete the control of fetching and executing instructions.

[0293] The memory can also be provided in the processor 3610 for storing instructions and data. In some embodiments, the memory in the processor 3610 is a cache memory. The memory can save instructions or data that the processor 3610 has just used or repeatedly uses. If the processor 3610 needs to use the instructions or data again, it can be directly called from the memory. Avoiding repeated access, reducing the waiting time of the processor 3610, thus improving the efficiency of the system.

[0294] In some embodiments, the processor 3610 can include one or more interfaces. The interfaces can include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0295] The I2C interface is a bidirectional synchronous serial bus including a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 3610 can include multiple sets of I2C buses. The processor 3610 can be coupled to the touch sensor 3680K, the charger, the flash, the camera 3693, etc. through different I2C bus interfaces respectively. For example, the processor 3610 can be coupled to the touch sensor 3680K through an I2C interface, so that the processor 3610 and the touch sensor 3680K communicate through the I2C bus interface to realize the touch function of the electronic device.

[0296] The I2S interface can be used for audio communication. In some embodiments, the processor 3610 can include multiple sets of I2S buses. The processor 3610 can be coupled to the audio module 3670 through the I2S bus to realize communication between the processor 3610 and the audio module 3670. In some embodiments, the audio module 3670 can deliver audio signals to the wireless communication module 3660 through the I2S interface to realize the function of answering a phone through a Bluetooth headset.

[0297] The PCM interface can also be used for audio communication, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 3670 can be coupled with the wireless communication module 3660 through a PCM bus interface. In some embodiments, the audio module 3670 can also transmit audio signals to the wireless communication module 3660 through the PCM interface, realizing the function of answering a phone call through a Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

[0298] The UART interface is a universal serial bus for asynchronous communication. The bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, the UART interface is usually used to connect the processor 3610 and the wireless communication module 3660. For example, the processor 3610 communicates with the Bluetooth module in the wireless communication module 3660 through the UART interface, realizing the Bluetooth function. In some embodiments, the audio module 3670 can transmit audio signals to the wireless communication module 3660 through the UART interface, realizing the function of playing music through a Bluetooth headset.

[0299] The MIPI interface can be used to connect the processor 3610 and peripheral devices such as the display screen 3694 and the camera 3693. The MIPI interface includes the camera serial interface (CSI), the display screen serial interface (DSI), etc. In some embodiments, the processor 3610 and the camera 3693 communicate through the CSI interface, realizing the shooting function of the electronic device. The processor 3610 and the display screen 3694 communicate through the DSI interface, realizing the display function of the electronic device.

[0300] The GPIO interface can be configured by software. The GPIO interface can be configured as a control signal or as a data signal. In some embodiments, the GPIO interface can be used to connect the processor 3610 and the camera 3693, the display screen 3694, the wireless communication module 3660, the audio module 3670, the sensor module 3680, etc. The GPIO interface can also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, etc.

[0301] The USB interface 3630 is an interface conforming to the USB standard specification, which can be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 3630 can be used to connect a charger to charge the electronic device, or to transmit data between the electronic device and peripheral devices. It can also be used to connect a headset to play audio through the headset. The interface can also be used to connect other electronic devices, such as AR devices, etc.

[0302] It can be understood that the interface connection relationship between the modules shown in the embodiments of the present application is only illustrative and does not constitute a structural limitation on the electronic device. In some other embodiments of the present application, the electronic device can use different interface connection manners or a combination of multiple interface connection manners.

[0303] The charging management module 3640 is configured to receive charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 3640 can receive the charging input of the wired charger through the USB interface 3630. In some wireless charging embodiments, the charging management module 3640 can receive the wireless charging input through the wireless charging coil of the electronic device. The charging management module 3640 can charge the battery 3642 and supply power to the electronic device through the power management module 3641.

[0304] The power management module 3641 is configured to connect the battery 3642, the charging management module 3640 and the processor 3610. The power management module 3641 receives the input of the battery 3642 and / or the charging management module 3640 to supply power to the processor 3610, the internal memory 3621, the external memory, the display screen 3694, the camera 3693 and the wireless communication module 3660, etc. The power management module 3641 can also be configured to monitor the battery capacity, the battery cycle number, the battery health status (leakage, impedance), etc. In some other embodiments, the power management module 3641 can also be arranged in the processor 3610. In some other embodiments, the power management module 3641 and the charging management module 3640 can also be arranged in the same device.

[0305] The wireless communication function of the electronic device can be realized through the antenna 21, the antenna 22, the mobile communication module 3650, the wireless communication module 3660, the modem processor and the baseband processor, etc.

[0306] The antenna 1 and the antenna 2 are configured to transmit and receive electromagnetic wave signals. Each antenna in the electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization rate of the antennas. For example, the antenna 21 can be multiplexed as a diversity antenna of a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0307] The mobile communication module 3650 can provide a solution for wireless communication including 2G / 3G / 4G / 5G, etc. on an electronic device. The mobile communication module 3650 can include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 3650 can receive electromagnetic waves by the antenna 1, and perform filtering, amplification, etc. on the received electromagnetic waves, and transfer to a modem processor for demodulation. The mobile communication module 3650 can also amplify the signal modulated by the modem processor, and radiate as electromagnetic waves through the antenna 1. In some embodiments, at least part of the function modules of the mobile communication module 3650 can be disposed in the processor 3610. In some embodiments, at least part of the function modules of the mobile communication module 3650 can be disposed in the same device as at least part of the modules of the processor 3610. The radio frequency circuit in the above embodiments can be the mobile communication module 4750.

[0308] The modem processor can include a modulator and a demodulator. The modulator is configured to modulate a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is configured to demodulate a received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. The low-frequency baseband signal processed by the baseband processor is transmitted to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 3670A, the microphone 3670B, etc.), or displays an image or a video through the display screen 3694. In some embodiments, the modem processor can be a separate device. In other embodiments, the modem processor can be independent of the processor 3610, and disposed in the same device as the mobile communication module 3650 or other function modules.

[0309] The wireless communication module 3660 can provide a solution for wireless communication applied to the electronic device, including wireless local area networks (WLAN) (e.g., wireless fidelity (Wi-Fi) network), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR) technology, and the like. The wireless communication module 3660 can be one or more devices that integrate at least one communication processing module. The wireless communication module 3660 receives electromagnetic waves via the antenna 22, frequency-modulates and filters the electromagnetic wave signals, and transmits the processed signals to the processor 3610. The wireless communication module 3660 can also receive signals to be transmitted from the processor 3610, frequency-modulate them, amplify them, and radiate them as electromagnetic waves via the antenna 22.

[0310] In some embodiments, the antennas 21 and the mobile communication module 3650 of the electronic device are coupled, and the antennas 22 and the wireless communication module 3660 are coupled, so that the electronic device can communicate with a network and other devices through wireless communication technology. The wireless communication technology can include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, and / or IR technology, etc. The GNSS can include a global positioning system (GPS), a global navigation satellite system (GLONASS), a beidu navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and / or a satellite based augmentation systems (SBAS).

[0311] The electronic device implements a display function through a GPU, a display screen 3694, and an application processor, etc. The GPU is a microprocessor for image processing, which is connected to the display screen 3694 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 3610 can include one or more GPUs, which execute program instructions to generate or change display information.

[0312] The display screen 3694 is configured to display images, videos, and the like. The display screen 3694 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flex light-emitting diode (FLED), a Miniled, a Micro Led, a Micro-oLed, a quantum dot light emitting diodes (QLED), or the like. In some embodiments, the electronic device can include one or N display screens 3694, where N is a positive integer greater than 1.

[0313] The external memory interface 3620 can be configured to connect an external memory card, such as a Micro SD card, to extend the storage capacity of the electronic device. The external memory card communicates with the processor 3610 via the external memory interface 3620 to perform data storage functions. For example, files such as music, videos, and the like can be saved in the external memory card.

[0314] The internal memory 3621 can be configured to store computer-executable program codes including instructions. The processor 3610 performs various functional applications and data processing of the electronic device by executing the instructions stored in the internal memory 3621. The internal memory 3621 can include a program storage area and a data storage area. The program storage area can store operating systems, at least one application program required for a function (such as a sound play function, an image play function, and the like), and the like. The data storage area can store data created during the use of the electronic device (such as audio data, a phonebook, and the like), and the like. In addition, the internal memory 3621 can include a high-speed random access memory, and can further include a non-volatile memory such as at least one of a magnetic disk storage device, a flash memory device, a universal flash storage (UFS), and the like.

[0315] The electronic device can implement audio functions through an audio module 3670, a speaker 3670A, a receiver 3670B, a microphone 3670C, an earphone interface 3670D, an application processor, and the like. For example, music play, voice recording, and the like.

[0316] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or software. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction, and do not limit the protection scope of the present application. The specific working process of the unit and module in the above system can refer to the corresponding process in the foregoing method embodiment, which will not be described here.

[0317] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can be referred to the related description of other embodiments.

[0318] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0319] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the system embodiments described above are only schematic, for example, the division of the modules or units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0320] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0321] In addition, each of the function units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit.

[0322] The integrated unit, if realized in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. When the processor executes the computer program, the steps of each method embodiment described above can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable file or some intermediate form. The computer readable medium at least includes any entity or device capable of carrying the computer program code to the electronic device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium. For example, U disk, mobile hard disk, magnetic disk or optical disk, etc. In some jurisdictions, according to legislation and patent practice, the computer readable medium can not be electrical carrier signal and telecommunication signal.

[0323] Finally, it should be noted that: the above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A radio frequency system, characterized by The radio frequency system comprises: a first radio frequency circuit, a second radio frequency circuit, a first antenna, a second antenna, a first radio frequency connecting line and a second radio frequency connecting line, the first antenna is coupled with the first radio frequency circuit through the first radio frequency connecting line, the second antenna is coupled with the second radio frequency circuit through the second radio frequency connecting line, and the first radio frequency connecting line and the second radio frequency connecting line are coupled in series; the radio frequency system further comprises a first node, a first voltage dividing element and a second voltage dividing element; the first node is coupled with a first potential, the first node is coupled with a first end of the first radio frequency connecting line, a second end of the second radio frequency connecting line is coupled with a second potential, and the first potential is higher than the second potential; a first end of the first voltage dividing element is coupled with a third potential, and a second end of the first voltage dividing element is coupled between the first radio frequency connecting line and the second radio frequency connecting line, and the first potential is higher than the third potential; the second voltage dividing element is coupled in parallel between two ends of the first radio frequency connecting line.

2. The radio frequency system of claim 1, wherein, The radio frequency system further comprises a first ground capacitor, and the first ground capacitor is coupled in parallel with the first voltage dividing element.

3. The radio frequency system of claim 1, wherein, The radio frequency system further comprises a power supply, and the first node is coupled with the power supply; the power supply comprises a direct current voltage source and a pull-up resistor, a first end of the pull-up resistor is coupled with an output end of the direct current voltage source, and a second end of the pull-up resistor is coupled with the first node.

4. The radio frequency system of claim 1, wherein, The radio frequency system further comprises a detection module, and the radio frequency system collects a potential of the first node through the detection module.

5. The radio frequency system of claim 4, wherein, The detection module is an analog-to-digital converter (ADC) or a voltage comparator.

6. The radio frequency system of claim 1, wherein, The radio frequency system further comprises: a first connecting seat, a second connecting seat, a third connecting seat and a fourth connecting seat; a first direct-current blocking capacitor, a second direct-current blocking capacitor, a third direct-current blocking capacitor and a fourth direct-current blocking capacitor; a first choke inductor, a second choke inductor, a third choke inductor and a fourth choke inductor; wherein the first radio frequency circuit is coupled with the first connecting seat, the first antenna is coupled with the second connecting seat, the second radio frequency circuit is coupled with the third connecting seat, and the second antenna is coupled with the fourth connecting seat; the first direct-current blocking capacitor is coupled between the first radio frequency circuit and the first connecting seat, the second direct-current blocking capacitor is coupled between the first antenna and the second connecting seat, the third direct-current blocking capacitor is coupled between the second radio frequency circuit and the third connecting seat, and the fourth direct-current blocking capacitor is coupled between the second antenna and the fourth connecting seat; a first end of the first choke inductor is coupled between the first DC blocking capacitor and the first connection seat, a second end of the first choke inductor is coupled with a second end of the first voltage dividing element, a first end of the second choke inductor is coupled between the second DC blocking capacitor and the second connection seat, a second end of the second choke inductor is coupled with the first node, a first end of the third choke inductor is coupled between the third DC blocking capacitor and the third connection seat, a second end of the third choke inductor is coupled with the second end of the first voltage dividing element, and a first end of the fourth choke inductor is coupled between the fourth DC blocking capacitor and the fourth connection seat, and a second end of the fourth choke inductor is coupled with the third potential.

7. The radio frequency system of claim 1, wherein, The potential of the first node changes when at least one of the two ends of the first radio frequency connection line and the two ends of the second radio frequency connection line is connected or disconnected with the corresponding connection seat.

8. The radio frequency system of claim 7, wherein, When the two ends of the first radio frequency connection line are coupled with the first radio frequency circuit and the first antenna respectively, and the two ends of the second radio frequency connection line are coupled with the second radio frequency circuit and the second antenna respectively, the potential of the first node is in a first state. When at least one of the first radio frequency connection line and the second radio frequency connection line is connected or disconnected with the corresponding connection seat, the potential of the first node is in a second state.

9. The radio frequency system of claim 1, wherein, The first voltage dividing element and the second voltage dividing element are both resistors, and the second potential and the third potential are both ground potentials.

10. The radio frequency system of claim 1, wherein, The radio frequency system further comprises a third radio frequency circuit, a third antenna and a third radio frequency connection line, the third radio frequency circuit is coupled with the first antenna, the second antenna or the third antenna through the third radio frequency connection line. The radio frequency system further comprises a fourth voltage dividing element and a fifth voltage dividing element. A first end of the fourth voltage dividing element is coupled with the third potential, and a second end of the fourth voltage dividing element is coupled between the second radio frequency connection line and the third radio frequency connection line. The fifth voltage dividing element is coupled in parallel between the two ends of the second radio frequency connection line.

11. The radio frequency system of claim 10, wherein, The radio frequency system further comprises a second ground capacitor, which is coupled in parallel with the fourth voltage dividing element.

12. The radio frequency system of claim 10, wherein, The radio frequency system further comprises: a fifth connection seat and a sixth connection seat; a fifth DC blocking capacitor and a sixth DC blocking capacitor; a fourth choke inductor, a fifth choke inductor, a sixth choke inductor and a seventh choke inductor; The third radio frequency circuit is coupled with the fifth connection seat, and the third antenna is coupled with the sixth connection seat. The fifth DC blocking capacitor is coupled between the third radio frequency circuit and the fifth connection seat, and the sixth DC blocking capacitor is coupled between the third antenna and the sixth connection seat. A first end of the fourth choke inductor is coupled between the fifth direct-current blocking capacitor and the fifth connecting seat, a second end of the fourth choke inductor is coupled with the second potential, a first end of the fifth choke inductor is coupled between the third direct-current blocking capacitor and the third connecting seat, a second end of the fifth choke inductor is coupled with the first end of the fifth voltage dividing element, a first end of the sixth choke inductor is coupled between the fourth direct-current blocking capacitor and the fourth connecting seat, a second end of the sixth choke inductor is coupled with the first end of the fifth voltage dividing element, and a first end of the seventh choke inductor is coupled between the sixth direct-current blocking capacitor and the sixth connecting seat, a second end of the seventh choke inductor is coupled with the first end of the fifth voltage dividing element.

13. The radio frequency system of claim 10, wherein, The fourth voltage dividing element and the fifth voltage dividing element are both resistors.

14. The radio frequency system of any of claims 1 to 13, wherein, The radio frequency system further comprises a general input / output port (GPIO) detection module, and the first node is further coupled with the GPIO detection module.

15. A radio frequency system, characterized by The radio frequency system comprises: N radio frequency circuits, N antennas, and N radio frequency connecting lines, N being an integer greater than or equal to 2, the i-th radio frequency circuit being coupled with the i-th antenna through the i-th radio frequency connecting line, i being a positive integer less than or equal to N-1; The radio frequency system comprises: a first node, N-1 first voltage dividing elements, and N-1 second voltage dividing elements; The first node is coupled with a first potential, the first node is coupled with a first end of the i-th radio frequency connecting line, a second end of the i+1-th radio frequency connecting line is coupled with a second potential, and the first potential is higher than the second potential; A first end of the i-th first voltage dividing element is coupled with a third potential, and a second end of the i-th first voltage dividing element is coupled between the i-th radio frequency connecting line and the i+1-th radio frequency connecting line, and the first potential is higher than the third potential; The i-th second voltage dividing element is coupled in parallel across the i-th radio frequency connecting line.

16. An electronic device, comprising: The electronic device comprises: a memory, a processor, a computer program stored in the memory and executable on the processor, and the radio frequency system according to any one of claims 1 to 15, and when the processor executes the computer program, the radio frequency system according to any one of claims 1 to 15 is used to detect the radio frequency connecting line in the electronic device.

17. The electronic device of claim 16, wherein, The electronic device further comprises at least one of a display and a speaker. When the radio frequency connecting line in the electronic device is connected abnormally, an alarm is given through the display or the speaker.

18. A computer-readable storage medium storing a computer program, characterized in that: The computer program is executed by the processor, and the radio frequency system according to any one of claims 1 to 15 is used to detect the radio frequency connecting line in the electronic device.

Images