CN114442000A - Radio frequency system, electronic device, and computer-readable storage medium - Google Patents

Abstract

The application is applicable to the technical field of radio frequency communication, and provides a radio frequency system, electronic equipment and a computer readable storage medium, wherein the radio frequency system comprises: first radio frequency circuit, second radio frequency circuit, first antenna, second antenna, first radio frequency connecting wire and second radio frequency connecting wire, the radio frequency system still includes: a first node, a first voltage dividing element and a second voltage dividing element; the first node is coupled with the first potential, the second voltage division element is coupled between the first radio frequency connecting line and the second radio frequency connecting line in series, the first end of the first voltage division element is coupled with the third potential, the second end of the first voltage division element is coupled between the first radio frequency connecting line and the second radio frequency connecting line, the connection error of the first radio frequency connecting line and the second radio frequency connecting line can be determined according to the potential changed by the first node, hardware required for detecting whether each radio frequency connecting line is connected in error is reduced, and cost required for detecting whether each radio frequency connecting line is connected in error is reduced.

Description

Radio frequency system, electronic device and computer readable storage medium

technical field

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 technique

A radio frequency cable (RF cable) is used to couple 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 coupled radio frequency circuit and the antenna. Wherein, the radio frequency circuit may be located on the main board of the terminal device, and the main board may also include a connection seat corresponding to the radio frequency circuit; the sub-board may include a connection seat that is coupled with the antenna and corresponds one-to-one; the radio frequency connection line may pass through the main board and the sub-board The connector base couples the RF circuit and the antenna.

With the development of communication technology, the number of antennas in electronic equipment such as terminal equipment is increasing, which increases the number of radio frequency connecting lines in terminal equipment, and the radio frequency connecting lines often have abnormal connection (such as connection error or connection disconnection and other abnormal conditions) ).

SUMMARY OF THE INVENTION

The present application provides a radio frequency system, an electronic device and a computer-readable storage medium, which solve the problem in the prior art that it is impossible to accurately determine that a radio frequency connection line in an electronic device is abnormally connected.

To achieve the above object, the application adopts the following technical solutions:

A first aspect provides a radio frequency system, comprising: a first radio frequency circuit, a second radio frequency circuit, a first antenna, a second antenna, a first radio frequency connection line and a second radio frequency connection line, the first antenna passing through the The first radio frequency connection line is coupled with the first radio frequency circuit or the second radio frequency circuit, and the second antenna is connected with the first radio frequency circuit or the second radio frequency circuit through the second radio frequency connection line coupling;

The radio frequency system further includes: a first node, a first voltage dividing element and a second voltage dividing element;

The first node is coupled to a first potential, the first node is coupled to a first end of the first radio frequency connection line, the second end of the second radio frequency connection line is coupled to a second potential, and the first end of the radio frequency connection line is coupled to a second potential. a potential higher than the second potential;

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 connection line and the second radio frequency connection line, and the the first potential is higher than the third potential;

The second voltage dividing element is coupled in series between the first radio frequency connection line and the second radio frequency connection line.

By arranging the first voltage dividing element and the second voltage dividing element in the radio frequency system, when the first radio frequency connecting line and the second radio frequency connecting line are connected incorrectly, the current flow in the radio frequency system changes, and the first voltage dividing element and the second radio frequency connecting line are changed. The voltage division of the two voltage dividers will also change, and the potential of the first node will also change, so that the connection error between the first radio frequency connection line and the second radio frequency connection line can be determined according to the changed potential. Proportional GPIO can reduce the hardware required to detect whether each cable is disconnected, and reduce the cost of detecting whether each cable is disconnected.

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

By setting the first capacitor to ground so that the first capacitor to ground is located between the two radio frequency circuits, the radio frequency signal serially connected to the radio frequency system in the radio frequency circuit can be guided to the third potential through the first capacitor to ground, that is, The ground potential can prevent the radio frequency signal in one radio frequency circuit from entering another radio frequency circuit through the radio frequency system, thereby improving the isolation degree between the two radio frequency circuits.

Based on any possible implementation manner 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, and the third voltage dividing element is coupled in parallel with the the two ends of the first radio frequency connection line.

By adding a third voltage divider element, on the basis of the function of detecting connection disconnection in the radio frequency system, the function of detecting connection errors can be combined, so as to improve the functional diversity of the radio frequency system, and reduce the need for detecting that the radio frequency connection line is in different abnormal states. required cost.

Based on any possible implementation manner 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 to the power supply of the radio frequency system;

The power supply includes a DC voltage source and a pull-up resistor, a first end of the pull-up resistor is coupled to the output end of the DC voltage source, and a second end of the pull-up resistor is coupled to the first node.

By using a DC voltage source to supply power to the radio frequency system, the stability of the detection of the radio frequency connection line can be improved, and the pull-up resistor can improve the safety and accuracy of the detection of the radio frequency connection line.

Based on any possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the radio frequency system further includes: a detection module, and the radio frequency system collects the first potential of the node.

Based on the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the detection module may be an analog-to-digital converter ADC or a voltage comparator.

By using the detection modules 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 detecting the potential through the ADC or the voltage comparator, multiple potentials of different magnitudes of the first node can be identified, and the detection of multiple potentials can be supported.

Based on any possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the radio frequency system further includes: a first connection seat, a second connection seat, a third connection seat, and a fourth connection seat Connecting seat;

The first DC blocking capacitor, the second DC blocking capacitor, the third DC blocking capacitor and the fourth DC blocking capacitor;

a first choke inductance, a second choke inductance, a third choke inductance, and a fourth choke inductance;

The first radio frequency circuit is coupled to the first connection base, the first antenna is coupled to the second connection base, the second radio frequency circuit is coupled to the third connection base, and the second radio frequency circuit is coupled to the third connection base. the antenna is coupled with the fourth connection base;

The first DC blocking capacitor is coupled between the first radio frequency circuit and the first connection seat, and the second DC blocking capacitor is coupled between the first antenna and the second connection seat, so The third DC blocking capacitor is coupled between the second radio frequency circuit and the third connection base, and the fourth DC blocking capacitor is coupled between the second antenna and the fourth connection base;

The first end of the first choke inductance is coupled between the first DC blocking capacitor and the first connection seat, and the second end of the first choke inductance is connected to the first voltage dividing element. The second end is coupled to each other, the first end of the second choke inductance is coupled between the second DC blocking capacitor and the second connection seat, and the second end of the second choke inductance is coupled to the second connection seat. The first node is coupled to each other, the first end of the third choke inductance is coupled between the third DC blocking capacitor and the third connection seat, and the second end of the third choke inductance is coupled to the third connection seat. The second end of the first voltage dividing element is coupled to each other, the first end of the fourth choke inductance is coupled between the fourth DC blocking capacitor and the fourth connection seat, and the fourth end of the choke inductance The second terminal is coupled to the second potential.

By setting 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 also be prevented from entering the RF circuit, thereby improving the isolation between the RF system and the RF circuit and improving the RF accuracy of the system.

Based on any possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the potential of the first node varies with the first radio frequency connection line and the second radio frequency connection line changes in the coupling method.

The potential of the first node can be changed 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 used as the detection point, and the first radio frequency connection line and the first radio frequency connection line are determined according to the change of the potential of the detection point. The coupling mode of the second radio frequency connection line.

Based on the seventh possible implementation manner of the first aspect, in the eighth possible implementation manner of the first aspect, when the two ends of the first radio frequency connection line are respectively connected to the first radio frequency circuit and the first radio frequency circuit When the antenna is coupled and the two ends of the second radio frequency connection line are respectively coupled with the second radio frequency circuit and the second antenna, the potential of the first node is in a first state;

When the two ends of the first radio frequency connection line are respectively coupled with the first radio frequency circuit and the second antenna, or the two ends of the first radio frequency connection line are respectively coupled with the second radio frequency circuit and the second radio frequency circuit When an antenna is coupled, the potential of the first node is in a second state.

Based on whether the detection point is 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 abnormally connected can be determined according to the potential state of the detection point, which can improve the Accuracy and flexibility to detect whether the RF cable is connected abnormally.

Based on any one possible implementation manner of the first aspect, in a ninth possible implementation manner of the first aspect, 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.

By using a resistor as a voltage dividing element, the cost of detecting the RF connection line can be reduced.

Based on any possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the radio frequency system further includes: a third radio frequency circuit, a third antenna, and a third radio frequency connection line, the A third radio frequency circuit is coupled to the first antenna, the second antenna or the third antenna through the third radio frequency connection line;

The radio frequency system further includes: a fourth voltage dividing element and a fifth voltage dividing element;

The first end of the fourth voltage dividing element is coupled to the third potential, and the 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 series between the second radio frequency connection line and the third radio frequency connection line.

By arranging a radio frequency system in an electronic device including 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 line is reduced, and the flexibility of detecting the radio frequency connection line is improved.

Based on the tenth possible implementation manner of the first aspect, in an eleventh possible implementation manner of the first aspect, the radio frequency system further includes: a second capacitor to ground, the second capacitor to ground is the same as the The fourth voltage dividing element is connected in parallel.

By setting the capacitance to ground so that the capacitance to ground is located between the two radio frequency circuits, the radio frequency signal serially connected to the radio frequency system in the radio frequency circuit can be guided to the third potential, that is, the ground potential through the capacitance to ground, which can prevent The radio frequency signal in one radio frequency circuit enters another radio frequency circuit through the radio frequency system, thereby improving the isolation degree between the two radio frequency circuits.

Based on the tenth or eleventh possible implementation manner of the first aspect, in a twelfth possible implementation manner of the first aspect, the radio frequency system further includes: a sixth voltage dividing element, the sixth dividing The pressure element is coupled in parallel at both ends of the second radio frequency connection line.

By adding the sixth voltage dividing element, on the basis of the function of detecting connection disconnection in the radio frequency system, the function of detecting connection errors can be combined, so as to improve the functional diversity of the radio frequency system, and reduce the problem of detecting that the radio frequency connection line is in different abnormal states. required cost.

Based on the tenth, eleventh or twelfth possible implementation manner of the first aspect, in a thirteenth possible implementation manner of the first aspect, the radio frequency system further includes:

the fifth connecting seat and the sixth connecting seat;

The fifth blocking capacitor and the sixth blocking capacitor;

the fourth choke inductance, the fifth choke inductance and the sixth choke inductance;

Wherein, the third radio frequency circuit is coupled with the fifth connection base, and the third antenna is coupled with the sixth connection base;

The fifth DC blocking capacitor is coupled between the third radio frequency circuit and the fifth connection base, and the sixth DC blocking capacitor is coupled between the third antenna and the sixth connection base;

The first end of the fourth choke inductance is coupled between the fifth DC blocking capacitor and the fifth connection seat, and the second end of the fourth choke inductance is coupled with the second potential, The first end of the fifth choke inductor is coupled between the fourth DC blocking capacitor and the fourth connection seat, and the second end of the fifth choke inductor is in phase with the second end of the fourth voltage dividing element. coupling, the first end of the sixth choke inductance is coupled between the sixth DC blocking capacitor and the sixth connection seat, and the second end of the sixth choke inductance is connected to the fourth voltage divider The second ends of the elements are coupled.

By setting 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 also be prevented from entering the RF circuit, thereby improving the isolation between the RF system and the RF circuit and improving the RF accuracy of the system.

Based on any one of the tenth to thirteenth possible implementation manners of the first aspect, in the fourteenth possible implementation manner of the first aspect, the fourth voltage dividing element and the fifth voltage dividing element All elements are resistors.

By using a resistor as a voltage dividing element, the cost of detecting the RF connection line can be reduced.

Based on any possible implementation manner of the first aspect, in a fifteenth possible implementation manner of the first aspect, the radio frequency system further includes a general-purpose input/output port GPIO detection module, and the first node is further connected to the The GPIO detection module is coupled.

On the basis of the electronic device including GPIO, the radio frequency system provided by the embodiment of the present application is added by adopting the route multiplexing method in combination with the original GPIO, so as to reduce the route and save the hardware resources. Moreover, based on the original GPIO function of determining whether each cable is disconnected, combined with the radio frequency system, it can determine whether each cable of the electronic device is connected incorrectly, thereby enriching the functions of the radio frequency system and improving the diversity of functions realized by the radio frequency system.

In a second aspect, a radio frequency system is provided, including: N radio frequency circuits, N antennas, and N radio frequency connection lines, where N is an integer greater than or equal to 2, and the ith radio frequency circuit is connected to the ith radio frequency circuit through the ith radio frequency connection line. i antenna couplings, i is a positive integer less than or equal to N-1;

The radio frequency system includes: a first node, N-1 first voltage dividing elements and N-1 second voltage dividing elements;

The first node is coupled to the first potential, the first node is coupled to the first end of the i-th radio frequency connection line, and the second end of the i+1-th radio frequency connection line is coupled to the second potential , the first potential is higher than the second potential;

The first end of the i-th first voltage dividing element is coupled to the third potential, and the second end of the i-th first voltage dividing element is coupled to the i-th radio frequency connection line and the i+1-th Between the radio frequency connection lines, the first potential is higher than the third potential;

The i-th second voltage dividing element is coupled in series between the i-th radio frequency connection line and the i+1-th radio frequency connection line.

By setting N voltage divider elements in the radio frequency system, when at least two radio frequency connection lines are connected incorrectly, the current flow in the radio frequency system changes, and the voltage divider of the N voltage divider elements also changes. The potential will also change, so that the connection error between the first RF connection line and the second RF connection line can be determined according to the changed potential. There is no need to set a GPIO proportional to the number of cables, which can reduce the need to detect whether each cable is disconnected. hardware, and reduce the cost of detecting whether each cable is disconnected.

In a first possible implementation manner of the second aspect, the radio frequency system further includes: a capacitor to ground, where the capacitor to ground is connected in parallel with the first voltage dividing element.

By setting the capacitance to ground so that the capacitance to ground is located between the two radio frequency circuits, the radio frequency signal serially connected to the radio frequency system in the radio frequency circuit can be guided to the third potential, that is, the ground potential through the capacitance to ground, which can prevent The radio frequency signal in one radio frequency circuit enters another radio frequency circuit through the radio frequency system, thereby improving the isolation degree between the two radio frequency circuits.

Based on any possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the radio frequency system further includes: N−1 third voltage dividing elements, the i-th third voltage dividing element The voltage dividing element is coupled in parallel at both ends of the i-th radio frequency connection line.

By adding a third voltage divider element, on the basis of the function of detecting connection disconnection in the radio frequency system, the function of detecting connection errors can be combined, so as to improve the functional diversity of the radio frequency system, and reduce the need for detecting that the radio frequency connection line is in different abnormal states. required cost.

Based on any possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the radio frequency system further includes a power supply, and the first node is coupled to the power supply;

The power supply includes a DC voltage source and a pull-up resistor, a first end of the pull-up resistor is coupled to the output end of the DC voltage source, and a second end of the pull-up resistor is coupled to the first node.

By using a DC voltage source to supply power to the radio frequency system, the stability of the detection of the radio frequency connection line can be improved, and the pull-up resistor can improve the safety and accuracy of the detection of the radio frequency connection line.

Based on any possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the radio frequency system further includes: a detection module, and the radio frequency system collects the first potential of the node.

Based on the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the detection module is an ADC or a voltage comparator.

By using the detection modules 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 detecting the potential through the ADC or the voltage comparator, multiple potentials of different magnitudes of the first node can be identified, and the detection of multiple potentials can be supported.

Based on any possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the radio frequency system further includes: 2N connection bases, 2N DC blocking capacitors, and multiple choke inductors;

The two ends of the i-th radio frequency connection line are respectively coupled with the 2i-1th said connection seat and the 2i-th said connection seat;

A DC blocking capacitor is coupled between each of the antennas and the corresponding connection base, and a DC blocking capacitor is coupled between each of the radio frequency circuits and the corresponding connection base;

One of the choke inductors is coupled between each of the second voltage dividing elements and the adjacent connection bases, and one of the choke inductors is coupled between the first connection base and the first node, The 2Nth connection socket is coupled to the second potential.

By setting 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 also be prevented from entering the RF circuit, thereby improving the isolation between the RF system and the RF circuit and improving the RF accuracy of the system.

Based on any possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the potential of the first node changes with the change of the coupling manner of the radio frequency connection line.

The potential of the first node can be changed 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 used as the detection point, and the first radio frequency connection line and the first radio frequency connection line are determined according to the change of the potential of the detection point. The coupling mode of the second radio frequency connection line.

Based on any possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the first voltage dividing element and the second voltage dividing element are both resistors.

By using a resistor as a voltage dividing element, the cost of detecting the RF connection line can be reduced.

Based on any possible implementation manner of the second aspect, in a ninth possible implementation manner of the second aspect, the radio frequency system further includes a GPIO detection module, and the first node is further connected to a GPIO power supply of the radio frequency system coupling.

On the basis of the electronic device including GPIO, the radio frequency system provided by the embodiment of the present application is added by adopting the route multiplexing method in combination with the original GPIO, so as to reduce the route and save the hardware resources. Moreover, based on the original GPIO function of determining whether each cable is disconnected, combined with the radio frequency system, it can determine whether each cable of the electronic device is connected incorrectly, thereby enriching the functions of the radio frequency system and improving the diversity of functions realized by the radio frequency system.

In a third aspect, there is provided an electronic device comprising: a memory, a processor, a computer program stored in the memory and executable on the processor, and as described in any one of the first and second aspects The radio frequency system, when the processor executes the computer program, based on the radio frequency system according to any one of the first aspect and the second aspect, the detection of the radio frequency connection line in the electronic device is implemented.

In a first possible implementation manner of the third aspect, the electronic device further includes: at least one of a display and a speaker;

When the radio frequency connection line in the electronic device is abnormally connected, an alarm is issued through the display or the speaker.

In a fourth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, based on any one of the first aspect and the second aspect The radio frequency system realizes the detection of radio frequency connection lines in electronic equipment.

Description of drawings

1 is a schematic diagram of a scenario involved in a radio frequency system provided by an embodiment of the present application;

2 is a schematic diagram of a system architecture involved in a radio frequency system provided by an embodiment of the present application;

3 is a schematic diagram of a system architecture involved in another radio frequency system provided by an embodiment of the present application;

4 is a circuit frame diagram of a radio frequency system provided by an embodiment of the present application;

5 is a simplified schematic diagram of a radio frequency system provided by an embodiment of the present application;

6 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

7 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

8 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

9 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 10 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

11 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

12 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

13 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

14 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

15 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

16 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

17 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 18 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

19 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 20 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

21 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

22 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

23 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 24 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 25 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 26 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 27 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 28 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 29 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 30 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

31 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

32 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

33 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

34 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

35 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 36 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 37 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 38 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 39 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

FIG. 40 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

41 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application;

42 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

43 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

44 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

45 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application;

46 is a schematic flowchart of a detection method provided by an embodiment of the present application;

FIG. 47 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

In the following description, for the purpose of illustration rather than limitation, specific details such as a specific system structure and technology are set forth 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 may be practiced in other embodiments without 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.

The terms used in the following embodiments are for the purpose of describing particular embodiments only, and are not intended to be limitations of the present application. As used in the specification of this application and the appended claims, the singular expressions "a," "the," "above," and "the" are intended to also include such things as "one or more" expressions unless the context clearly dictates otherwise.

With the increase in the number of radio frequency connection lines in electronic equipment such as terminal equipment, a general-purpose input/output (GPIO) can be added to the terminal equipment, which is proportional to the number of radio frequency connection lines. GPIO is used for Detect whether each RF connection line has abnormal connection (such as abnormal connection such as connection error or disconnection). During the detection process, it is possible to determine the radio frequency connection line with abnormal connection among the plurality of radio frequency connection lines through the potential detected by each GPIO.

However, since the number of GPIOs is proportional to the number of radio frequency connection lines, with the increase of the number of radio frequency connection lines, the GPIOs required for detection also need to be increased, which will result in high cost and waste of hardware resources. Therefore, an embodiment of the present application proposes a radio frequency system for detecting a radio frequency connection line in an electronic device by using a small number of components.

First, the scenarios involved in the embodiments of the present application are introduced. Referring to FIG. 1 , an electronic device may include a main board and a sub board. A plurality of radio frequency circuits are provided on the main board (two radio frequency circuits are taken as an example for illustration in FIG. 1 ), and each radio frequency circuit can be connected to a corresponding connection socket on the main board. Moreover, the electronic device may also include a plurality of antennas, and similar to the radio frequency circuit, each antenna may be connected to a corresponding connection socket on the sub-board.

Wherein, both the main board and the sub-board of the electronic device may be a printed circuit board (Printed Circuit Board, PCB), and the embodiment of the present application does not limit the main board and the sub-board.

For example, referring to FIG. 1, the main board includes a radio frequency circuit 11 and a radio frequency circuit 12, and the radio frequency circuit 11 and the radio frequency circuit 12 respectively correspond to a connection seat; the sub-board includes two connection seats, and the connection seat on the left side of the sub-board is in phase with the antenna 22. Correspondingly, the connection seat on the right side of the sub-board corresponds to the antenna 21, and the antenna 21 and the antenna 22 can be respectively connected to the corresponding connection seat on the sub-board.

The radio frequency circuit 11 may include one or more of power amplifiers, filters, linear amplifiers, and switches, and the radio frequency circuit 11 may also be coupled to a processor (eg, a baseband processor or a radio frequency transceiver, etc.), which is used to generate transmit signals , the radio frequency circuit 11 transmits the transmission signal to the antenna 21 through the radio frequency connection line (hereinafter referred to as cable) 31, and the antenna 21 transmits the generated wireless signal. The antenna 21 can also receive wireless signals, 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 may also include one or more devices among power amplifiers, filters, linear amplifiers and switches, and the radio frequency circuit 12 may also be coupled to a processor (such as a baseband processor or a radio frequency transceiver, etc.), and the processor uses In order to generate the transmission signal, the radio frequency circuit 12 transmits the transmission signal to the antenna 22 through the cable 32, and the antenna 22 transmits the generated wireless signal. The antenna 22 can also receive wireless signals, 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 motherboard.

In an optional embodiment, the electronic device may include a plurality of cables, and each cable may include two ends, the first end is coupled to the connection socket corresponding to the radio frequency circuit, and the second end is coupled to the connection socket corresponding to the antenna. In the process of radio frequency communication of electronic equipment, the radio frequency circuit can send radio frequency signals to the antenna through the cable, and the antenna can receive and send radio frequency signals to realize the radio frequency communication of electronic equipment. For example, as shown in FIG. 1 , the first end of cable 31 is coupled to the connection socket corresponding to the radio frequency circuit 11 , and the second end of cable 31 is coupled to the connection socket corresponding to the antenna 21 ; similarly, the first end of cable 32 corresponds to the radio frequency circuit 12 . The second end of the cable2 is coupled with the corresponding connector of the antenna 22 .

The radio frequency connection line may be a coaxial cable. The coaxial cable is a kind of electric wire and signal transmission line, and has two concentric conductors, and the conductor and the shielding layer share the same axis. The advantages of coaxial cable are: it has good transmission characteristics, which can ensure the stable operation of the communication network. At the same time, the coaxial cable has strong anti-electromagnetic interference and anti-bending performance, good flexibility, and is suitable for folding and rotating electronic products. application. In addition, coaxial cables also have good heat and flame resistance, and can work in environments ranging from -55 degrees Celsius (°C) to 250°C. Coaxial cables are suitable for the transmission of analog and digital signals and can be used in a wide variety of applications. Coaxial cables have been widely used, for example, in electronic equipment such as smart phones, notebook computers, digital cameras, video cameras, global positioning system (GPS) locators, wireless routers, LCD TVs, precision medical instruments, etc. Used to communicatively connect different boards. In one embodiment, the radio frequency connection can transmit analog signals, such as radio frequency signals.

The resistance of the radio frequency connection line is generally relatively small. In one embodiment, the resistance value of the radio frequency connection line may range from 1 ohm (Ω) to 50Ω, such as 5Ω, 7.5Ω, and the like. When the RF connection line is connected to the circuit, the resistance value of the RF connection line can fluctuate. For example, when the RF connection line is not connected to the circuit, the resistance value is 7.5Ω, and the resistance value when the RF connection line is connected to the circuit can be Fluctuates between 8Ω and 50Ω.

With the continuous increase of radio frequency circuits, antennas and connectors in electronic equipment, in the process of connecting the radio frequency circuit and the antenna through the cable, it may occur that the radio frequency circuit connected by the cable does not correspond to the antenna, that is, the cable connection is wrong. , which may cause the communication quality to deteriorate, or the problem of inability to communicate. For example, the first end of the cable 31 is connected to the connection seat corresponding to the radio frequency circuit 11 , and the second end of the cable 31 is connected to the connection seat corresponding to the antenna 22 , that is, the radio frequency circuit 11 is connected to the antenna 22 .

Therefore, the embodiment of the present application proposes a radio frequency system capable of detecting whether a cable is connected incorrectly, and a detection method for detecting whether a cable is connected incorrectly. Divide the voltage to determine whether each cable is connected incorrectly. Wherein, the detection point may be a position in the radio frequency system where the potential changes due to the change of the circuit coupling mode caused by each cable connection error or disconnection, and the embodiment of the present application does not limit the detection point of the radio frequency system.

It should be noted that, in practical applications, the above-mentioned radio frequency circuit, antenna and radio frequency connecting line may be described in various ways. For example, the above-mentioned radio frequency circuit 11 may be the first radio frequency circuit, the radio frequency circuit 12 may be the second radio frequency circuit, and the antenna 21 may be a first antenna, antenna 22 may be a second antenna, cable31 may be a first radio frequency connection line, and cable32 may be a second radio frequency connection line. If the electronic device includes 3 radio frequency circuits, 3 antennas and 3 radio frequency connection lines, the radio frequency circuit 13 may be the third radio frequency circuit, the antenna 23 may be the third antenna, and the cable 33 may be the third radio frequency connection line. Similarly, when the electronic device includes N radio frequency circuits, N antennas, and N radio frequency connection lines, any radio frequency circuit can be the ith radio frequency circuit, any antenna can be the ith antenna, and any radio frequency connection The line may be the ith radio frequency connection line, wherein N is an integer greater than or equal to 2, and i is a positive integer less than or equal to N.

Moreover, the connection seat, choke inductor and DC blocking capacitor coupled to each cable can also be described in various ways. For example, the first connection seat can be the following connection seat 41, and the second connection seat can be the following connection seat The connecting seat 42, the third connecting seat can be the following connecting seat 43, the fourth connecting seat can be the following connecting seat 44, the fifth connecting seat can be the following connecting seat 45, and the sixth connecting seat can be the following connecting seat In the connection base 46, the first choke inductance may be the following choke inductance L1, the second choke inductance may be the following choke inductance L2, and the third choke inductance may be the following choke inductance L3 , The fourth choke inductor can be the following choke inductor L4, the first DC blocking capacitor can be the following DC blocking capacitor C1, the second DC blocking capacitor can be the following DC blocking capacitor C2, and the third DC blocking capacitor The capacitor can be the following DC blocking capacitor C3, the fourth DC blocking capacitor can be the following DC blocking capacitor C4, the first ground capacitor can be the following ground capacitor C5, and the fifth DC blocking capacitor can be the following The DC blocking capacitor C6 and the sixth DC blocking capacitor can be the following DC blocking capacitor C7, and the second grounding capacitor can be the following grounding capacitor C8.

It should be noted that, in the radio frequency systems corresponding to FIG. 4 to FIG. 16 , the fifth choke inductance may be the following choke inductance L5 , and the sixth choke inductance may be the following choke inductance L6 . In the radio frequency system corresponding to FIG. 17 to FIG. 45 , the fifth choke inductance may be the following choke inductance L6 , and the sixth choke inductance may be the following choke inductance L7 . Moreover, the radio frequency system corresponding to FIG. 17 to FIG. 45 may further include a seventh choke inductance, that is, the choke inductance L5 described below.

Similarly, when the electronic device includes 2N connection bases, multiple choke inductors and 2N DC blocking capacitors, any connection base can be the ith connection base, and any choke inductor can be the ith choke Inductor, any DC blocking capacitor can be the ith DC 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.

In addition, there can also be various descriptions for each voltage dividing element in the radio frequency system. For example, the first voltage dividing element can be the following R1, the second voltage dividing element can be the following R2, and the third voltage dividing element It may be R5 described below, and the sixth voltage dividing element may be R6 described below. Moreover, in the radio frequency systems corresponding to FIG. 4 to FIG. 16 , the fourth voltage dividing element may be the following R4, and the fifth voltage dividing element may be the following R3, and the radio frequency corresponding to FIG. 17 to FIG. 45 In the system, the fourth voltage dividing element may be the following R3, and the fifth voltage dividing element may be the following R4.

Moreover, each voltage dividing element may form a voltage dividing module, for example, the first voltage dividing element and the second voltage dividing element may form the following voltage dividing module. Wherein, the first voltage dividing element may be an element coupled to the ground potential in each voltage dividing module, and the second voltage dividing element may be an element connected in series between each cable.

It should be noted that the radio frequency system may be applied to electronic equipment, the first potential in the radio frequency system may be a high potential, and both the second potential and the third potential may be low potentials. For example, the first potential may be a potential coupled to a power supply, the second potential and the third potential may be ground potentials, such as the second potential may be the ground potential GND1, the third potential may be the ground potential GND2, and the following includes 3 In the radio frequency system corresponding to each cable, the third potential coupled with the fourth voltage dividing element may be the ground potential GND3. In the following embodiments, the first potential is coupled with the power supply, and the second potential and the third potential are both ground potentials.

FIG. 2 is a schematic diagram of a system architecture involved in a radio frequency system provided by an embodiment of the present application. By way of example and not limitation, referring to FIG. 2 , the system architecture may include: a radio frequency system 201 , a processor 202 , a memory 203 and multiple cables 204 .

The radio frequency system 201 may be coupled with each cable 204 , the radio frequency system 201 may also be coupled with the processor 202 , and the processor 202 may be coupled with the memory 203 .

When detecting whether each cable 204 is connected incorrectly, the radio frequency system 201 can collect the potential of the detection point through a preset 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 a preset potential that matches the potential information from a plurality of preset potentials stored in advance, so that the connection state corresponding to the preset potential can be stored in the memory 203. , so that the maintenance personnel can know whether each cable 204 is connected incorrectly according to the connection state stored in the memory 203 .

The multiple preset potentials pre-stored by the electronic device correspond to different connection states of each cable respectively. For example, the electronic device includes cable31 and cable32, and the electronic device can store two preset potentials in advance, one of which corresponds to the correct connection of cable31 and cable32, and the other preset potential corresponds to the incorrect connection of cable31 and cable32.

Furthermore, referring to FIG. 3 , the system architecture may further include: at least one of a display screen 205 and a speaker 206 , both of which may be coupled to the processor 202 . When the processor 202 determines that each cable 204 is connected incorrectly 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 speaker 206 to remind the user that each cable 204 is connected incorrectly.

For example, display screen 205 may display "RF cable connection error, please check!", and/or speaker 206 may sound "RF cable connection error, please check!".

In addition, in practical applications, the electronic device may include multiple cables 204. The following takes the electronic device including two cables 204 as an example to illustrate how to determine two cables 204 through the radio frequency system 201 (cable 31 and cable 32 shown in FIG. 4 ). ) for connection errors.

FIG. 4 is a circuit frame diagram of a radio frequency system provided by an embodiment of the present application. Referring to FIG. 4 , the radio frequency system may include multiple circuit modules such as a voltage divider module 401, a detection module 402, and a power supply module 403. The radio frequency system may also Including: the first node (A), multiple DC blocking capacitors (C1, C2, C3 and C4) and multiple choke inductors (L1, L2, L3 and L4).

The output end of the power supply module 403 can be respectively coupled to the voltage divider module 401 and the detection module 402 through the first node A, the two ends of the cable 31 can be respectively coupled to the voltage divider module 401 and the power supply module 403, and the two ends of the cable 32 can be respectively coupled to There are ground potential GND1 and voltage divider module 401 . In addition, a DC blocking capacitor can be set between the radio frequency circuit and the corresponding connector, and a DC blocking capacitor can also be set between the antenna and the corresponding connector to realize resistance-capacitance coupling and prevent the DC current of the RF system from flowing into the RF circuit and the antenna. cause interference to radio frequency signals.

In addition, a choke inductance L1 may be provided between the voltage dividing module 401 and the cable 31; similarly, a choke inductance L2 may be provided between the power supply module 403 and the cable 31, and a choke may also be provided between the voltage dividing module 401 and the cable 32 Inductor L3. The choke inductor has the effect of passing DC and blocking AC, which can prevent the AC RF signal in the RF circuit from entering the RF system and affect the potential collected by the RF system. Moreover, a choke inductor L4 can also be set between the cable32 and the ground potential GND1 to prevent the radio frequency signal sent by the radio frequency circuit from entering the ground potential and to avoid causing interference to the radio frequency signal.

Specifically, for each DC blocking capacitor, a DC blocking capacitor C1 is provided between the radio frequency circuit 11 and the corresponding connection base 41, and a DC blocking capacitor C2 is provided between the antenna 21 and the corresponding connection base 42; similarly, the radio frequency circuit 12 A DC blocking capacitor C3 is provided between the antenna 22 and the corresponding connection base 43 , and a DC blocking capacitor C4 is provided between the antenna 22 and the corresponding connection base 44 .

For each choke inductance, the first end of the choke inductance L1 is coupled between the DC blocking capacitor C1 and the connection seat 41 corresponding to the radio frequency circuit 11 , and the second end of the choke inductance L1 is coupled with the voltage divider module 401 . Similarly, the first end of the choke inductance L2 is coupled between the DC blocking capacitor C2 and the connection base 42 corresponding to the antenna 21, the second end of the choke inductance L2 is coupled with the power supply module 403; the first end of the choke inductance L3 It is coupled between the DC blocking capacitor C3 and the connection seat 43 corresponding to the radio frequency circuit 12 , the second end of the choke inductor L3 is coupled with the voltage divider module 401 ; the first end of the choke inductor L4 is coupled between the DC blocking capacitor C4 and the antenna 22 Between the corresponding connection sockets 44, the second end of the choke inductor L4 is coupled to the ground potential GND1.

In addition, the power supply module 403 may include a DC voltage source V0 and a pull-up resistor R0, the output end of the DC voltage source V0 is coupled to the first end of the pull-up resistor R0, and the second end of the pull-up resistor R0 is connected to the choke through the first node A The second end of the current inductor L2 is coupled so that the power supply module is coupled between the DC blocking capacitor C2 and the connection base 41 corresponding to the antenna 21 , and the second end of the pull-up resistor R0 can be the output end of the power supply module 403 .

The DC voltage source V0 may be a built-in voltage source of the electronic device. For example, the DC voltage source V0 may be a built-in battery of the electronic device, or a step-down module connected to the built-in battery of the electronic device. The DC voltage source V0 is not limited.

In addition, the power supply module 403 may be a circuit module in an integrated circuit that is coupled to the radio frequency system through the first node A, or may be a circuit module on a circuit board of an electronic device. The embodiment of the present application does not limit the power supply module.

The detection module 402 may include a voltage detection circuit, an input terminal of which may be coupled to the second terminal of the pull-up resistor R0, and an output terminal of the voltage detection circuit may be coupled to the processor in the system architecture shown in FIG. 2 . The voltage detection circuit may be an analog-to-digital converter (ADC), a voltage comparator, or another circuit capable of reading voltage, which is not limited in this embodiment of the present application .

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 radio frequency system according to the preset sampling frequency, and calculate the value of the collected analog voltage signal. Quantization, and finally, the quantized analog voltage signal is represented in digital form by coding, and the acquisition of the potential of the detection point is completed. Or, 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 compare the collected potential with the preset potential, The magnitude relationship between the potential of the detection point and each preset potential is determined, so that the magnitude of the potential of the detection point can be determined according to multiple magnitude relationships.

It should be noted that the detection module 402 may also be a circuit module in an integrated circuit or a circuit module on a circuit board of an electronic device, and the embodiment of the present application does not limit the detection module 402 .

The voltage dividing module 401 may include a first voltage dividing resistor R1 and a second voltage dividing resistor R2, the first voltage dividing resistor R1 is coupled in series between the second voltage dividing resistor R2 and the ground potential GND2, and the second voltage dividing resistor R2 is connected through a choke. The flow inductor L1 and the choke inductor L3 are coupled in series between cable31 and cable32.

For example, the first end of the first voltage dividing resistor R1 is coupled to the ground potential GND2, and the second end of the first voltage dividing resistor R1 may be coupled to the first end or the second end of the second voltage dividing resistor R2. The first end of the second voltage dividing resistor R2 is coupled to the choke inductance L1, and the second end of the second voltage dividing resistor R2 is coupled to the choke inductance L3.

It should be noted that the above pull-up resistor R0, the first voltage divider resistor R1 and the second voltage divider resistor R2 can all be resistors in the kiloohm level, such as the pull-up resistor R0, the first voltage divider resistor R1 and the second voltage divider resistor. The resistance of the resistor R2 is all 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 incorrectly can be improved. For example, the DC voltage source V0 may provide a voltage of 1.8 volts (V), the pull-up resistor R0 may be 20 kiloohms (KΩ), the first voltage dividing resistor R1 may also be 20KΩ, and the second voltage dividing resistor R2 may 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 DC voltage source V0. The parameter value is not limited.

FIG. 5 is a simplified schematic diagram of a radio frequency system provided by an embodiment of the present application, and the radio frequency circuit, antenna, DC blocking capacitor and choke inductor shown in FIG. 4 are omitted. Referring to Figure 5, if cable31 and cable32 are connected correctly, the current can flow through the pull-up resistor R0, cable31 and the second voltage dividing resistor R2. The second end of the second voltage dividing resistor R2 is coupled to the cable32 and the first voltage dividing resistor R1 respectively. The resistance of the cable32 is much smaller than the resistance of the first voltage dividing resistor R1, so the first voltage dividing resistor R1 is short-circuited by the cable32, and the first voltage dividing resistor R1 is short-circuited by the cable32. A voltage dividing resistor R1 has no current flow.

Therefore, the potential of the detection point at this time, that is, the potential of the second end of the pull-up resistor R0, is V1=V*R2/(R0+R2), where V1 is the potential of the detection point, and V is the voltage of the DC voltage source V0. The potential is the maximum potential in the radio frequency system, 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.

However, if cable31 and cable32 are connected incorrectly, a simplified circuit as shown in FIG. 6 can be formed. FIG. 6 is a simplified schematic diagram of another radio frequency system provided by the embodiment of the present application. Referring to FIG. 6, the current also flows through the upper pull-up resistor R0. After that, due to the wrong connection between cable31 and cable32, the first end of the second voltage dividing resistor R2 is coupled to the ground potential GND1 through cable32, and the first end of the first voltage dividing resistor R1 is also coupled to the ground potential GND2, and the first voltage divider The second end of the resistor R1 is coupled with the second end of the second voltage dividing resistor R2, and the first voltage dividing resistor R1 and the second voltage dividing resistor R2 are coupled in parallel.

Therefore, at this time in the radio frequency system, the first voltage dividing resistor R1 and the second voltage dividing resistor R2 are connected in parallel, and the pull-up resistor R0 is connected in series with the parallel first voltage dividing resistor R1 and the second voltage dividing resistor R2, so the potential of the detection point is V2=V*Rx1/(R0+Rx1), where V2 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 first voltage dividing resistor R1 and The resistance value of the second voltage dividing resistor R2 in parallel, Rx1=R1*R2/(R1+R2), 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.

Further, referring to FIG. 7 , the voltage dividing module 401 may also include a capacitor C5 to ground. By setting the capacitor C5 to ground between the two radio frequency circuits, the radio frequency signals of the radio frequency system can be serially connected to the two radio frequency circuits, and The ground capacitor C5 is guided to the ground potential GND2 to prevent the radio frequency signal in one radio frequency circuit from entering another radio frequency circuit through the radio frequency system, thereby improving the isolation between cable31 and cable32.

The ground capacitor C5 is connected in parallel with the first voltage dividing resistor R1, that is, the first end of the ground capacitor C5 is connected to the ground potential GND2, and the second end of the ground capacitor C5 is connected to the first voltage dividing resistor R1. The two terminals and/or the second terminal of the second voltage dividing resistor R2 are connected.

It should be noted that, in the above embodiment, the power supply module 403 of the radio frequency system is located on the sub-board of the electronic device, and the detection module 402 and the voltage divider module 401 of the radio frequency system are located on the main board of the electronic device. However, in other embodiments, the position of each circuit module of the radio frequency system may be adjusted according to the layout design of the main board and the sub-board. For example, the power supply module 403 and the detection module 402 can be set on the sub-board, and the voltage divider module 401 can be set on the main board; or, the power supply module 403 and the detection module 402 can also be set on the main board, and the voltage divider module 401 can be set on the main board. Or, the power supply module 403 can also be set on the main board, and the voltage divider module 401 and the detection module 402 can be set on the sub board; Sub-board, the embodiment of this application does not limit the position of each circuit module in the radio frequency system.

Further, in the radio frequency system shown in FIG. 4 and FIG. 7 , the voltage dividing module 401 is coupled between the DC blocking capacitor C1 and the connection seat 41 corresponding to the radio frequency circuit 11 through the choke inductor L1, and is coupled to the connection seat 41 corresponding to the radio frequency circuit 11 through the choke inductor L3. Between the DC blocking capacitor C3 and the connection seat 43 corresponding to the radio frequency circuit 12 .

In other embodiments, when the voltage dividing module 401 is coupled between the DC blocking capacitor C1 and the connection base 41 corresponding to the radio frequency circuit 11 through the choke inductor L1, the voltage dividing module 401 can be coupled to the DC blocking capacitor C4 through the choke inductor L3 Between the connection seat 44 corresponding to the antenna 22, the first end of the choke inductor L4 is coupled between the DC blocking capacitor C3 and the connection seat 43 corresponding to the radio frequency circuit 12, and the second end of the choke inductor L4 can be connected to the ground potential GND1 coupling.

Alternatively, when the voltage dividing module 401 is coupled between the DC blocking capacitor C3 and the connection base 43 corresponding to the radio frequency circuit 12 through the choke inductor L3, the voltage dividing module 401 can be coupled to the DC blocking capacitor C2 corresponding to the antenna 21 through the choke inductor L1 The power supply module 403 can be coupled between the DC blocking capacitor C1 and the connection seat 41 corresponding to the radio frequency circuit 11 through the choke inductor L2.

Certainly, the voltage dividing module 401 may also be coupled between two adjacent cables in other manners, and the embodiment of the present application does not limit the connection manner of the cables.

In addition, when the power supply module 403 and the detection module 402 are respectively located on the main board and the sub-board of the electronic device (for example, the power supply module 403 is located on the main board and the detection module 402 is located on the sub-board, or, the power supply module 403 is located on the sub-board and the detection module 402 is located on the main board) , the power supply module 403 and the detection module 402 can be coupled through a flexible printed circuit (FPC), the FPC has the advantages of light weight and thin thickness, and the FPC can be freely bent and folded, so that the positional relationship between the main board and the sub board Flexible adjustment is possible. Certainly, the power supply module 403 and the detection module 402 may also be coupled through a signal line, which is not limited in this embodiment of the present application.

In the above embodiment, the electronic device includes 2 cables as an example for description, but in practical applications, the electronic device may include multiple cables. The following takes the electronic device including 3 cables (cable31, cable32 and cable33) as an example. 8 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application. The radio frequency system may include: a first voltage dividing module 801, a second voltage dividing module 802, a detection module 803, and a power supply Module 804.

The power supply module 804 can be coupled to the first voltage divider module 801 and the detection module 803 through the first node A, the two ends of the cable 31 can be respectively coupled to the power supply module 804 and the first voltage divider module 801, and the two ends of the cable 32 can be respectively coupled to the first voltage divider module 801. A voltage dividing module 801 and a second voltage dividing module 802, two ends of the cable 33 can be respectively coupled to the second voltage dividing module 802 and the ground potential GND1.

Moreover, similar to the radio frequency system shown in FIG. 4 , the radio frequency system in this embodiment of the present application may also include: a first node (A), a plurality of DC blocking capacitors (C1, C2, C3, C4, C6, and C7) and multiple choke inductors (L1, L2, L3, L4, L5 and L6). Among them, multiple DC blocking capacitors such as C1, C2, C3, and C4, and multiple choke inductors, such as L1, L2, and L3, are consistent with the arrangement shown in FIG. 4, and will not be repeated here. However, the choke inductor L4 shown in FIG. 4 is no longer located between the cable32 and the ground potential, but is located between the cable33 and the ground potential GND1.

Moreover, other DC blocking capacitors and choke inductors are also added in the embodiments of the present application, a DC blocking capacitor C6 is provided between the radio frequency circuit 13 and the corresponding connection base 45 , and a DC blocking capacitor C6 is provided between the antenna 23 and the corresponding connection base 46 . A DC blocking capacitor C7; a choke inductance L5 is provided between the second voltage dividing module 802 and the cable32, and a choke inductance L6 is provided between the second voltage dividing module 802 and the cable3.

The first end of the choke inductance L5 is coupled between the DC blocking capacitor C4 and the connection seat 44 corresponding to the antenna 22, the second end of the choke inductance L5 is coupled with the second voltage dividing module 802; the third end of the choke inductance L6 One end is coupled between the DC blocking capacitor C7 and the connection seat 46 corresponding to the antenna 23, the second end of the choke inductor L6 is coupled with the second voltage dividing module 802; the first end of the choke inductor L4 is coupled to the DC blocking capacitor C6 The second end of the choke inductor L4 is coupled to the ground potential GND1 between the connection bases 45 corresponding to the radio frequency circuit 13 .

In addition, the first voltage divider module 801 , the detection module 803 and the power supply module 804 in the embodiment of the present application are similar to the voltage divider module 401 , the detection module 402 and the power supply module 403 shown in FIG. 4 , and will not be repeated here.

The second voltage dividing module 802 in this embodiment of the present application is similar to the first voltage dividing module 801 . Referring to FIG. 8 , the second voltage dividing module 802 may include a third voltage dividing resistor R3 and a fourth voltage dividing resistor R4 . The first end of the fourth voltage dividing resistor R4 is coupled to the ground potential GND3, and the second end of the fourth voltage dividing resistor R4 is coupled to the second end of the third voltage dividing resistor R3. The third voltage dividing resistor R3 is coupled in series between the choke inductor L5 and the choke inductor L6. For example, the first end of the third voltage dividing resistor R3 may be coupled with the choke inductor L5, the second end of the third voltage dividing resistor R3 may be coupled with the choke inductor L6, or the first end of the third voltage dividing resistor R3 It can be coupled with the choke inductor L6, and the second end of the third voltage dividing resistor R3 can be coupled with the choke inductor L5.

It should be noted that, similar to the first voltage dividing resistor R1 and the second voltage dividing resistor R2, the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 can also be resistors of the kiloohm level, and the third voltage dividing resistor The specific parameter values of R3 and the fourth voltage dividing resistor R4 may be set according to the impedance of the electronic device and the built-in DC voltage source V0, which are not limited in this embodiment of the present application.

In addition, the radio frequency system shown in FIG. 8 is based on the radio frequency system shown in FIG. 4 , and a cable33 and a second voltage dividing module 802 are added. However, in an embodiment, the DC voltage source V0 can be coupled between the DC blocking capacitor C6 and the connection seat 45 corresponding to the radio frequency circuit 13 through the choke inductor L2, then the ground potential GND1 is coupled to the DC blocking capacitor through the choke inductor L4 The capacitor C2 is coupled between the connection seat 42 corresponding to the antenna 21 , or between the DC blocking capacitor C1 and the connection seat 41 corresponding to the radio frequency circuit 11 .

Of course, the DC voltage source V0 can also be coupled between the DC blocking capacitor C7 and the connection seat 46 corresponding to the antenna 23 through the choke inductor L2, then the ground potential GND1 is coupled to the DC blocking capacitor C2 and the antenna 21 through the choke inductor L4. between the connection bases 42 , or coupled between the DC blocking capacitor C1 and the connection bases 41 corresponding to the radio frequency circuit 11 .

That is, multiple cables of the electronic device can be coupled in series between the DC voltage source V0 and the ground potential GND1. In the embodiment of the present application, the number of cables in the electronic device and the relationship between the DC voltage source V0 and the ground potential GND1 in the radio frequency system are affected. The location is not limited.

FIG. 9 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, and the radio frequency circuit, antenna, DC blocking capacitor and choke inductor shown in FIG. 8 are omitted. Referring to Figure 9, if cable31, cable32 and cable33 are connected correctly, the current can flow through the pull-up resistor R0, cable31, the second voltage dividing resistor R2, cable32, the third voltage dividing resistor R3 and cable33, so as to reach the ground potential GND1 to form circuit loop.

Moreover, the first end of the first voltage dividing resistor R1 is coupled to the ground potential GND2, the second end of the first voltage dividing resistor R1 is coupled to the second end of the second voltage dividing resistor R2, and the third voltage dividing resistor R3 is connected through the cable33 Coupled with the ground potential GND1, the first voltage dividing resistor R1 is connected in parallel with the third voltage dividing resistor R3, the current flows through the cable32 and the third voltage dividing resistor R3, and also flows through the first voltage dividing resistor R1 to reach the ground potential GND2.

In addition, the first end of the fourth voltage dividing resistor R4 is coupled to the ground potential GND3, and the second end of the fourth voltage dividing resistor R4 is respectively coupled to the second end of the third voltage dividing resistor R3 and the cable33, and the resistance of the cable33 is much smaller than that of the third voltage dividing resistor R3. If the resistance value of the voltage dividing resistor R4 is four, the fourth voltage dividing resistor R4 is short-circuited by the cable33, and no current flows through the fourth voltage dividing resistor R4.

Therefore, the potential of the detection point at this time, that is, the potential of the second end of the pull-up resistor, is V3=V*(R2+Rx2)/(R0+R2+Rx2), where V3 is the potential of the detection point, and V is The potential of the DC voltage source, 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, Rx2 is the parallel resistance value of the first voltage dividing resistor R1 and the third voltage dividing resistor R3, Rx2=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.

However, if cable32 and cable33 are connected incorrectly, a simplified circuit as shown in FIG. 10 can be formed. FIG. 10 is a simplified schematic diagram of another radio frequency system provided by this embodiment of the present application. Referring to FIG. 10 , the current also flows through the upper Pull-up resistor R0, cable31 and second voltage divider resistor R2.

Due to the wrong connection between cable32 and cable33, the third voltage dividing resistor R3 is coupled to the ground potential GND1 through the connection socket 45 corresponding to the radio frequency circuit 13, and the fourth voltage dividing resistor R4 is also coupled to the ground potential GND3. The voltage dividing resistor R4 is connected in parallel. After the current flows through the second voltage dividing resistor R2, it flows through the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 through the cable32, and finally reaches the ground potential GND1 through the cable33 to form a loop.

Moreover, the first end of the first voltage dividing resistor R1 is also coupled to the ground potential GND2, that is, the first voltage dividing resistor R1 is connected in parallel with the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4. Therefore, the potential of the detection point at this time is V4=V*(R2+Rx3)/(R0+R2+Rx3), where V4 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The resistance value corresponding to R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, Rx3 is the resistance value of the first voltage dividing resistor R1, the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 in parallel, Rx3=R1* R3*R4/(R1*R3+R1*R4+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 fourth voltage dividing resistor Resistor value corresponding to resistor R4.

Referring to Figure 11, cable31 and cable32 are connected incorrectly, the fourth voltage dividing resistor R4 is short-circuited by cable33, the second voltage dividing resistor R2 and the third voltage dividing resistor R3 are connected in series, and the first voltage dividing resistor R1 is connected in series with the second voltage dividing resistor R2 Connected in parallel with the third voltage dividing resistor R3, the potential of the detection point is V5=V*Rx4/(R0+Rx4), where V5 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The resistance value corresponding to R0, Rx4 is the resistance value of the first voltage dividing resistor R1 and the second voltage dividing resistor R2 and the third voltage dividing resistor R3 connected in series in parallel, Rx4=R1*(R2+R3)/(R1+R2+ R3), R1 is the resistance value corresponding to the first voltage dividing resistor R1, 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.

It should be noted that when the electronic device includes 3 cables, during the coupling process of each cable, all 3 cables may be connected incorrectly. Please refer to Figure 12 to Figure 14. Figure 12 to Figure 14 are the A simplified schematic diagram of yet another radio frequency system provided by an embodiment of the application.

Referring to FIG. 12 , cable31 , cable32 and cable33 are all connected incorrectly, that is, the radio frequency circuit 11 is coupled with the antenna 23 , the radio frequency circuit 12 is coupled with the antenna 21 , and the radio frequency circuit 13 is coupled with the antenna 22 . The third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 are connected in parallel, the second voltage dividing resistor R2 is connected in series with the parallel third voltage dividing resistor R3 and the fourth voltage dividing resistor R4, and the first voltage dividing resistor R1 is connected with the second voltage dividing resistor R1. The branch circuit where resistor R2 is located is in parallel. The potential of the detection point is V5=V*Rx5/(R0+Rx5), where V5 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 Rx5 is the first The equivalent resistance of the branch circuit where the voltage dividing resistor R1 and the second voltage dividing resistor R2 are located in parallel, Rx5=R1*Ry1/(R1+Ry1), R1 is the resistance value corresponding to the first voltage dividing resistor R1, and Ry1 is the second voltage dividing resistor R1. The resistance value of the voltage dividing resistor R2 in series with the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 in parallel, Ry1=R2+R3*R4/(R3+R4), R2 is the resistance corresponding to the second voltage dividing resistor R2 value, 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.

Referring to FIG. 13 , cable31 , cable32 and cable33 are also connected incorrectly, that is, the radio frequency circuit 11 is coupled with the antenna 22 , the radio frequency circuit 12 is coupled with the antenna 23 , and the radio frequency circuit 13 is coupled with the antenna 21 . A choke inductance L4 coupled to the ground potential GND1 is provided between the radio frequency circuit 13 and the corresponding connection base 45, and the detection module 803 coupled to the antenna 21 is coupled to the ground potential GND1 through the choke inductance L4. At this time, the potential of the detection point is V6=0.

Referring to Figure 14, cable31 and cable33 are connected incorrectly. Similar to the radio frequency system shown in Figure 13, the radio frequency circuit 11 is coupled with the antenna 23, the radio frequency circuit 13 is coupled with the antenna 21, and the detection module 803 coupled with the antenna 21 passes through the choke inductor L4 It is coupled with the ground potential GND1, and the potential of the detection point at this time is V7=0.

Further, referring to FIG. 15 , the first voltage dividing module 801 may further include a capacitor C5 to ground, and the capacitor C5 to ground is connected in parallel with the first voltage dividing resistor R1 to improve the isolation between cable31 and cable32. Similarly, the second voltage dividing module 802 may further include a capacitor C8 to ground, and the capacitor C8 to ground is connected in parallel with the fourth voltage dividing resistor R4 to improve the isolation between cable32 and cable33.

The above-mentioned ground capacitance C5 and ground capacitance C8 are similar to the ground capacitance C5 shown in FIG. 7 , and are not repeated here.

It should be noted that, in the above embodiment, the power supply module 804 and the second voltage divider module 802 of the radio frequency system are located on the sub-board of the electronic device, while the detection module 803 and the first voltage divider module 801 of the radio frequency system are located on the main board of the electronic device. However, in practical applications, the position 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. The position of each circuit module is not limited in this embodiment of the present application.

Moreover, the first voltage dividing module 801 and the second voltage dividing module 802 can be coupled between two adjacent cables in different ways. Please refer to the different coupling ways corresponding to the voltage dividing module 401 in FIG. 4 , which are not repeated here. Repeat.

In addition, the radio frequency system provided by the embodiment of the present application can also be combined with GPIO, and the GPIO is used to determine whether the cable of the electronic device is disconnected, and then according to the radio frequency system provided by the embodiment of the present application, it is determined whether the cable of the electronic device is connected incorrectly. .

That is, on the basis of the electronic device with GPIO, the radio frequency system shown in FIG. 4 , FIG. 7 , FIG. 8 , and FIG. 15 can be added to the electronic device to obtain another radio frequency system. Taking adding the radio frequency system shown in FIG. 7 as an example, referring to FIG. 16 , the radio frequency system may include: a GPIO detection module 1601 , a GPIO power supply module 1602 , a voltage divider module 1603 , a detection module 1604 and a power supply module 1605 . Moreover, the radio frequency system may further include: a plurality of DC blocking capacitors (C1, C2, C3 and C4), a grounding capacitor (C5) and a plurality of choke inductors (L1, L2, L3 and L4).

Among them, the voltage divider module 1603, the detection module 1604, the power supply module 1605, multiple DC blocking capacitors (C1, C2, C3 and C4), multiple choke inductors (L1, L2, L3 and L4) and the ground capacitor C5 The coupling mode is similar to the voltage divider module 401, detection module 402, power supply module 403, multiple DC blocking capacitors (C1, C2, C3 and C4), multiple choke inductors (L1, L2, L3 and L4) is similar to the coupling mode of the grounding capacitor C5, which is not repeated here.

Moreover, the GPIO power supply module 1602 is similar to the power supply module 1605 , and the GPIO detection module 1601 is also similar to the detection module 1604 . The GPIO power supply module 1602 can provide voltage for each cable in the electronic device, and the GPIO detection module 1601 can determine whether each cable is disconnected according to the potential level of the detection point.

In the above embodiment, the GPIO power supply module 1602 and the power supply module 1605 of the radio frequency system are located on the sub-board of the electronic device, while the GPIO detection module 1601, the detection module 1604 and the voltage divider module 1603 of the radio frequency system are located on the main board of the electronic device. However, in practical applications, the position 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. The position of each circuit module is not limited in this embodiment of the present application.

Moreover, the voltage dividing module 1603 may be coupled between two adjacent cables in different ways, and reference may be made to the different coupling ways corresponding to the voltage dividing module 401 in FIG. 4 , which will not be repeated here.

In addition, if the detection module 1604 and the GPIO detection module 1601 of the radio frequency system are both located on the main board or sub-board of the electronic device, the detection module 1604 can use the wiring multiplexing method to realize the detection on the basis of the wiring of the GPIO detection module 1601 The wiring of the module 1604 enables the GPIO detection module 1601 to determine whether each cable is properly connected through the detection module 1604 while determining whether each cable is disconnected.

For example, the detection module 1604 can identify multiple potentials according to the collected potentials, so that the processor can determine the connection state of each cable according to the identified potentials. The GPIO detection module 1601 can determine the potential level according to the collected potential, that is, determine the high potential or the low potential, and the processor can determine whether the cable is disconnected according to the high potential or the low potential.

To sum up, in the radio frequency system provided by the embodiments of the present application, at least one voltage divider module coupled to the power supply module is provided in the radio frequency system, and each voltage divider module is coupled in series, wherein each voltage divider module is disposed adjacent to Between two cables, if any two of the multiple cables are connected incorrectly, the current flow in the RF system will change, and the voltage division of the voltage divider resistors in each voltage divider module will also change, so it is connected to the power supply module. The detection module can detect the changing potential, so that each cable with wrong connection can be determined according to the changing potential. It is not necessary to set GPIO proportional to the number of cables, which can reduce the hardware required to detect whether each cable is disconnected, and reduce the The cost of detecting whether each cable is disconnected.

Moreover, cables can be coupled in series between the power supply module and the voltage divider module, between the voltage divider module and the ground potential, and between two adjacent voltage divider modules, and combined and arranged between the radio frequency system and the radio frequency circuit, and DC blocking capacitors and choke inductors are arranged 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 also prevent the current in the radio frequency system from entering the radio frequency circuit, thereby improving the connection between the radio frequency system and the radio frequency circuit. isolation and improve the accuracy of the RF system.

Moreover, by setting the ground capacitance in the voltage divider module, so that the ground capacitance is located between the two radio frequency circuits, the radio frequency signal serially connected to the radio frequency system in the radio frequency circuit can be guided to the ground potential through the ground capacitance, thereby preventing The radio frequency signal in one radio frequency circuit enters another radio frequency circuit through the radio frequency system, thereby improving the isolation degree between the two radio frequency circuits.

In addition, the radio frequency system provided by the embodiment of the present application can also be added based on the electronic device including the GPIO, in combination with the original GPIO, by using the route multiplexing method, so as to reduce the route and save the hardware resources. Moreover, based on the original GPIO function of determining whether each cable is disconnected, combined with the radio frequency system, it can determine whether each cable of the electronic device is connected incorrectly, thereby enriching the functions of the radio frequency system and improving the diversity of functions realized by the radio frequency system.

In the above embodiment, it is determined whether each cable is disconnected through GPIO. On the basis of the radio frequency system shown in FIG. 4 , the coupling mode of the second voltage dividing resistor R2 of the voltage dividing module 401 in the radio frequency system can be adjusted, thereby Whether each cable in the electronic device is disconnected can be determined through the adjusted radio frequency system.

FIG. 17 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application. Referring to FIG. 17 , the radio frequency system may include multiple circuit modules such as a voltage divider module 1701, a detection module 1702, and a power supply module 1703. The radio frequency system also It may include: a first node (A), multiple DC blocking capacitors (C1, C2, C3 and C4) and multiple choke inductors (L1, L2, L3 and L4).

The output end of the power supply module 1703 can be respectively coupled to the detection module 1702 and the voltage divider module 1701 through the first node A, the power supply module 1703 can supply power to the voltage divider module 1701, and the voltage divider module 1701 can be connected according to different cables. , forming different voltage divisions, so that the detection module 1702 can detect the potential of the preset detection point, so as to obtain different potentials corresponding to different coupling modes of each cable, and then can determine whether each cable is disconnected according to different potentials connect.

Moreover, both ends of the cable 31 may be coupled with a voltage dividing module 1701 . When the cable 31 is normally connected, the voltage dividing module 1701 can be short-circuited by the cable 31; and when the cable 31 is disconnected, the power supply module 1703 can be coupled with the ground potential through the voltage dividing module 1701 to form a loop.

In addition, unlike cable31, both ends of cable32 can be coupled with ground potential GND1 and cable31, and there is no voltage divider module provided at both ends of cable32. When the cable32 is normally connected, the radio frequency system can form a loop through the cable32 connected to the ground potential GND1; and when the cable32 is disconnected, the radio frequency system can be connected to the ground potential GND2 through the voltage divider module 1701 to form a loop.

It should be noted that, for the arrangement of the DC blocking capacitors (C1, C2, C3 and C4) and the choke inductors (L1, L2, L3 and L4) in the embodiment of the present application, reference may be made to the arrangement shown in FIG. 4 . The distribution method will not be repeated here. In addition, the power supply module 1703 and the detection module 1702 in the embodiment of the present application are also similar to the power supply module 1703 and the detection module 1702 shown in FIG. 4 , and details are not repeated here.

The difference from the voltage dividing module 401 in FIG. 4 is that the above-mentioned voltage dividing module 1701 may also include: a first voltage dividing resistor R1 and a second voltage dividing resistor R2, and the first end of the first voltage dividing resistor R1 is connected to The ground potential GND2 is coupled, and the second end of the first voltage dividing resistor R1 is coupled to the second end of the second voltage dividing resistor R2. However, the first end of the second voltage dividing resistor R2 is coupled to the output end of the power supply module 1703, that is, it is coupled to the first node A of the radio frequency system, and the second end of the first voltage dividing resistor R1 is connected to the second voltage dividing The second ends of the resistor R2 are both coupled between the choke inductor L1 and the choke inductor L3.

Since the second end of the pull-up resistor R0 is coupled between the DC blocking capacitor C2 and the connection base 42 corresponding to the antenna 21 , the first end of the second voltage dividing resistor R2 is also coupled between the DC blocking capacitor C2 and the corresponding connection of the antenna 21 between the sockets 42, and the second end of the second voltage dividing resistor R2 is coupled between C1 and the connecting socket 41 corresponding to the radio frequency circuit 11 through the choke inductance L1, then the second end of the second voltage dividing resistor R2 is also connected to the cable31 coupled, the second voltage dividing resistor R2 is connected in parallel with the cable31.

In addition, for the parameter values of the first voltage dividing resistor R1 and the second voltage dividing resistor R2, reference may be made to the first voltage dividing resistor R1 and the second voltage dividing resistor R2 shown in FIG. 4 , which will not be repeated here.

FIG. 18 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, and the radio frequency circuit, antenna, DC blocking capacitor and choke inductor shown in FIG. 17 are omitted. Referring to Figure 18, if cable31 and cable32 are not connected and disconnected, the second voltage dividing resistor R2 in the RF system can be short-circuited by cable31, the first voltage dividing resistor R1 can be short-circuited by cable32, and the current can flow through the pull-up resistor R0 , cable31 and cable32, so as to reach the ground potential GND1 to form a loop.

Therefore, at this time, the potential of the detection point is V8=0, where V8 is the potential of the preset detection point.

However, if cable31 is disconnected and cable32 is connected normally, a simplified circuit as shown in FIG. 19 can be formed. FIG. 19 is a simplified schematic diagram of another radio frequency system provided by the embodiment of the present application. Referring to FIG. The current flows through the second voltage dividing resistor R2 from the pull-up resistor R0. However, cable32 is not disconnected, and the first voltage dividing resistor R1 is short-circuited by cable32. After the current flows through the second voltage dividing resistor R2, it can reach the ground potential GND1 through the cable32.

Therefore, the potential of the detection point at this time is V9=V*R2/(R0+R2), where V9 is the potential of the preset detection point, V is the potential of the DC voltage source V0, and R0 is the voltage corresponding to the pull-up resistor R0 The resistance value, R2 is the resistance value corresponding to the second voltage dividing resistor R2.

Similarly, if cable31 is normally connected and cable32 is disconnected, a simplified circuit as shown in FIG. 20 can be formed. FIG. 20 is a simplified schematic diagram of another radio frequency system provided by the embodiment of the present application. Referring to FIG. 20 , cable31 is normally connected , the second voltage dividing resistor R2 is short-circuited by cable31. However, the connection of cable32 is disconnected, and after the current flows through the pull-up resistor R0 and cable31, it can only flow through the first voltage dividing resistor R1 to reach the ground potential GND2.

Therefore, the potential of the detection point at this time is V10=V*R1/(R0+R1), where V10 is the potential of the preset detection point, V is the potential of the DC voltage source V0, and R0 is the voltage corresponding to the pull-up resistor R0 The resistance value, R1 is the resistance value corresponding to the first voltage dividing resistor R1.

In addition, if both cable31 and cable32 are disconnected, a simplified circuit as shown in FIG. 21 can be formed. FIG. 21 is a simplified schematic diagram of another radio frequency system provided by this embodiment of the present application. Referring to FIG. 21 , both cable31 and cable32 are connected. After disconnection, after the current flows through the pull-up resistor R0, it can only flow through the second voltage dividing resistor R2 and the first voltage dividing resistor R1 to reach the ground potential GND2.

Therefore, the potential of the detection point at this time is V11=V*(R1+R2)/(R0+R1+R2), where V11 is the potential of the preset detection point, V is the potential of the DC voltage source V0, and R0 is The resistance value corresponding to the 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.

For example, if the potential of the DC voltage source V0 is 1.8V, the resistance value of the pull-up resistor R0 is 20KΩ, the resistance value of the first voltage dividing resistor R1 is 20KΩ, and the resistance value of the second voltage dividing resistor R2 is 10KΩ. The capacitance value corresponding to the direct capacitor is C1=C2=C3=C4=33pF (picofarad), the capacitance value of the ground capacitor C5 is 20pF, and the corresponding inductance value of each choke inductor is L1=L2=L3=L4=68nH ( Nanoheng), then it can be calculated according to the above formula, V8=0V, V9=0.6V, V10=0.9V, V11=1.08V.

Further, referring to FIG. 22 , the voltage dividing module 1701 may further include a capacitor C5 to ground, and the capacitor C5 to ground is connected in parallel with the first voltage dividing resistor R1 to improve the isolation between cable31 and cable32. The above-mentioned capacitance C5 to the ground is similar to the capacitance C5 to the ground shown in FIG. 7 , and details are not repeated here.

It should be noted that, in the above embodiment, the power supply module 1703 of the radio frequency system is located on the sub-board of the electronic device, and the detection module 1702 and the voltage dividing module 1701 of the radio frequency system are located on the main board of the electronic device. However, in practical applications, the position 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. The position of each circuit module is not limited in this embodiment of the present application.

Further, the voltage dividing module 1701 may be coupled between two adjacent cables in different ways, and reference may be made to the different coupling ways corresponding to the voltage dividing module 401 in FIG. 4 , which will not be repeated here.

Moreover, when the power supply module 1703 and the detection module 1702 are located on the main board and the sub-board of the electronic device respectively (for example, the power supply module 1703 is located on the main board and the detection module 1702 is located on the sub-board, or, the power supply module 1703 is located on the sub-board and the detection module 1702 is located in the main board) , the power supply module 1703 and the detection module 1702 may be coupled through an FPC or through a signal line, which is not limited in this embodiment of the present application.

In the above-mentioned embodiments as shown in FIGS. 17 to 22 , the electronic device includes 2 cables as an example for description, but in practical applications, the electronic device may include multiple cables, and the following uses the electronic device including 3 cables ( cable31, cable32, and cable33) are taken as an example for description. Referring to FIG. 23, FIG. 23 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application. The radio frequency system may include: a first voltage divider module 2301, a second voltage divider Voltage module 2302, detection module 2303 and power supply module 2304.

The output end of the power supply module 2304 can be coupled with the detection module 2303 through the first node A, the power supply module 2304 can also be coupled with the first voltage divider module 2301 through cable31, and the first voltage divider module 2301 can be connected with the second voltage divider through cable32 Module 2302 is coupled. That is, both ends of the cable 31 may be coupled with the first voltage dividing module 2301 . When the cable 31 is disconnected, a circuit loop can be formed through the first voltage dividing module 2301 . Similarly, both ends of the cable 32 can also be coupled with a second voltage dividing module 2302, and when the cable 32 is disconnected, a circuit loop can be formed through the second voltage dividing module 2302. In addition, both ends of cable33 can be respectively coupled to cable32 and ground potential GND1.

Moreover, similar to the radio frequency system shown in FIG. 17 , the radio frequency system in this embodiment of the present application may also include: a first node (A), a plurality of DC blocking capacitors ( C1 , C2 , C3 , C4 , C6 and C7 ) and multiple choke inductors (L1, L2, L3, L4, L5, L6 and L7). Among them, multiple DC blocking capacitors such as C1, C2, C3, and C4, and multiple choke inductors, such as L1, L2, and L3, are consistent with the arrangement shown in FIG. 17, and will not be repeated here. However, the choke inductor L4 shown in FIG. 17 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 FIG. 23 .

Moreover, other DC blocking capacitors (C6 and C7) and choke inductors (L5, L6 and L7) are also added in the embodiments of the present application, and a DC blocking capacitor C6 is provided between the radio frequency circuit 13 and the corresponding connection seat 45, A DC blocking capacitor C7 is provided between the antenna 3 and the corresponding connection base 46; a choke inductance L5 and a choke inductance L6 are provided between the second voltage dividing module 2302 and the cable 32, and the choke inductance L5 and the choke inductance L6 are respectively coupled At both ends of cable32, a choke inductor L7 is arranged between the second voltage dividing module 2302 and cable3.

Specifically, the first end of the choke inductance L4 is connected between the DC blocking capacitor C6 and the connection seat 45 corresponding to the radio frequency circuit 13, the second end of the choke inductance L4 is coupled with the ground potential GND1; the first end of the choke inductance L5 The end is coupled between the DC blocking capacitor C3 and the connection seat 43 corresponding to the radio frequency circuit 12, the second end of the choke inductor L5 is coupled with the second voltage dividing module 2302; the first end of the choke inductor L6 is coupled to the DC blocking capacitor C4 Between the connection bases 44 corresponding to the antenna 22 , the second end of the choke inductor L6 is coupled to the second voltage dividing module 2302 ; the first end of the choke inductor L7 is coupled to the connection base 46 corresponding to the DC blocking capacitor C7 and the antenna 23 . In between, the second end of the choke inductor L7 is coupled with the second voltage dividing module 2302 .

In addition, the first voltage dividing module 2301 , the detection module 2303 and the power supply module 2304 in the embodiment of the present application are similar to the voltage dividing module 1701 , the detection module 1702 and the power supply module 1703 shown in FIG. 17 , and will not be repeated here.

The second voltage dividing module 2302 in this embodiment of the present application is similar to the first voltage dividing module 2301. Referring to FIG. 23, the second voltage dividing module 2302 may include a third voltage dividing resistor R3 and a fourth voltage dividing resistor R4. The first end of the third voltage dividing resistor R3 is coupled to the ground potential GND3, the second end of the third voltage dividing resistor R3 is coupled to the second end of the fourth voltage dividing resistor R4, and the first end of the fourth voltage dividing resistor R4 The terminal is coupled with the choke inductor L5. Moreover, both the second end of the third voltage dividing resistor R3 and the second end of the fourth voltage dividing resistor R4 may be coupled between the choke inductance L6 and the choke inductance L7.

In addition, the parameter value of the third voltage dividing resistor R3 may refer to the parameter value of the first voltage dividing resistor R1 in the first voltage dividing module 2301 in the embodiment of the present application, and the parameter value of the fourth voltage dividing resistor R4 may be implemented with reference to the present application. In the example, the parameter values of the second voltage dividing resistor R2 in the first voltage dividing module 2301 will not be repeated here.

FIG. 24 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, and the radio frequency circuit, antenna, DC blocking capacitor and choke inductor shown in FIG. 23 are omitted. Referring to Figure 24, if cable31, cable32 and cable33 are not connected and disconnected, the second voltage dividing resistor R2 in the RF system is short-circuited by cable31, the fourth voltage-dividing resistor R4 is short-circuited by cable32, and the third voltage-dividing resistor R3 is short-circuited by cable33 , and the first voltage dividing resistor R1 is short-circuited by cable32 and cable33, and the current flows through the pull-up resistors R0, cable31, cable32 and cable33, thereby reaching the ground potential GND1 to form a loop.

Therefore, the potential of the detection point at this time is V12=0, where V12 is the potential of the detection point.

However, if cable31 is disconnected, and cable32 and cable33 are connected normally, a simplified circuit as shown in FIG. 25 can be formed. FIG. 25 is a simplified schematic diagram of another radio frequency system provided by the embodiment of the present application. Referring to FIG. 25, cable31 is connected When disconnected, the current flows through the second voltage dividing resistor R2 by the pull-up resistor R0. However, cable32 and cable33 are not connected and disconnected, so the first voltage dividing resistor R1, the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 are short-circuited. After the current flows through the second voltage dividing resistor R2, it can reach the ground potential GND1 through the cable32 and the cable33.

Therefore, the potential of the detection point at this time is V13=V*R2/(R0+R2), where V13 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 dividing resistor R2.

Similarly, if cable31 and cable33 are normally connected and cable32 is disconnected, a simplified circuit as shown in FIG. 26 can be formed. FIG. 26 is a simplified schematic diagram of another radio frequency system provided by the embodiment of the present application. Referring to FIG. 26 , cable31 It is normally connected to cable33, the second voltage dividing resistor R2 is short-circuited by cable31, and the third voltage-dividing resistor R3 is short-circuited by cable33. The cable32 is disconnected, and the first voltage dividing resistor R1 and the fourth voltage dividing resistor R4 are connected in parallel.

Therefore, the potential of the detection point at this time is V14=V*Rx6/(R0+Rx6), 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, Rx6 is the equivalent resistance of the first voltage dividing resistor R1 and the fourth voltage dividing resistor R4 connected in parallel, Rx6=R1*R4/(R1+R4), R1 is the resistance value corresponding to the first voltage dividing resistor R1, and R4 is the first voltage dividing resistor R1. The resistance value corresponding to the four-division resistor R4.

Similarly, if cable31 and cable32 are normally connected and cable33 is disconnected, a simplified circuit as shown in FIG. 27 can be formed. FIG. 27 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. Referring to FIG. 27 , cable31 It is normally connected to cable32, the second voltage dividing resistor R2 is short-circuited by cable31, and the fourth voltage-dividing resistor R4 is short-circuited by cable32. The cable33 is disconnected, and the first voltage dividing resistor R1 and the third voltage dividing resistor R3 are connected in parallel.

Therefore, the potential of the detection point at this time is V15=V0*Rx7/(R0+Rx7), 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, Rx7 is the equivalent resistance of the first voltage dividing resistor R1 and the third voltage dividing resistor R3 connected in parallel, Rx7=R1*R3/(R1+R3), R1 is the resistance value corresponding to the first voltage dividing resistor R1, and R3 is the first voltage dividing resistor R1. The resistance value corresponding to the three-division resistor R3.

The above-mentioned only three cables of the electronic device are not disconnected, and when any one of the cables is disconnected, the potential detected by the preset detection point. However, in practical applications, any two cables among the three cables may be disconnected in the electronic device, or all three cables may be disconnected. Referring to FIG. 28 to FIG. 31 , simplified schematic diagrams of the corresponding radio frequency system when two cables or three cables are disconnected are respectively shown.

FIG. 28 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 28 , the cable31 and cable32 of the electronic device are disconnected, the cable33 is normally connected, the third voltage dividing resistor R3 is short-circuited by the cable33, the first The 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.

Therefore, the potential of the detection point at this time is V16=V*(R2+Rx8)/(R0+R2+Rx8), where V16 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The resistance value corresponding to R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, Rx8 is the equivalent resistance of the first voltage dividing resistor R1 and the fourth voltage dividing resistor R4 connected in parallel, Rx8=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.

FIG. 29 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 29 , the cable32 and cable33 of the electronic device are disconnected, the cable31 is normally connected, the second voltage dividing resistor R2 is short-circuited by the cable31, and the third The 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 third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 connected in series.

Therefore, the potential of the detection point at this time is V17=V*Rx9/(R0+Rx9), 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, Rx9 is the equivalent resistance of the first voltage dividing resistor R1 and the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 connected in series in parallel, Rx9=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.

FIG. 30 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 30 , the cable31 and cable33 of the electronic device are disconnected, the cable32 is normally connected, the fourth voltage dividing resistor R4 is short-circuited by the cable32, the first The 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 first voltage dividing resistor R1 and the third voltage dividing resistor R3.

Therefore, the potential of the detection point at this time is V18=V*(R2+Rx10)/(R0+R2+Rx10), where V18 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The resistance value corresponding to R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, Rx10 is the equivalent resistance of the first voltage dividing resistor R1 and the third voltage dividing resistor R3 in parallel, Rx10=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.

FIG. 31 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 31 , cable31, cable32, and cable33 of the electronic device are all disconnected, and the first voltage divider R1 is connected to the third voltage divider in series The resistor R3 and the fourth voltage dividing resistor R4 are connected in parallel.

Therefore, the potential of the detection point at this time is V19=V*(R2+Rx11)/(R0+R2+Rx11), where V19 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The resistance value corresponding to R0, R2 is the resistance value corresponding to the second voltage dividing resistor R2, Rx11 is the equivalent resistance of the first voltage dividing resistor R1 and the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 connected in series in parallel, Rx11 =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 fourth voltage dividing resistor The resistance value corresponding to R4.

Further, referring to FIG. 32 , the first voltage dividing module 2301 may further include a capacitor C5 to ground, and the capacitor C5 to ground is connected in parallel with the first voltage dividing resistor R1 to improve the isolation between cable31 and cable32. Similarly, the second voltage dividing module 2302 may further include a capacitor C8 to ground, and the capacitor C8 to ground is connected in parallel with the third voltage dividing resistor R3 to improve the isolation between cable32 and cable33.

The above-mentioned ground capacitance C5 and ground capacitance C8 are similar to the ground capacitance C5 shown in FIG. 22 , and are not repeated here.

It should be noted that in the above embodiment, the power supply module 2304 and the second voltage dividing module 2302 of the radio frequency system are located on the sub-board of the electronic device, while the detection module 2303 and the first voltage dividing module 2301 of the radio frequency system are located on the main board of the electronic device. However, in practical applications, the position 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. The position of each circuit module is not limited in this embodiment of the present application.

Moreover, the first voltage dividing module 2301 and the second voltage dividing module 2302 can be coupled between two adjacent cables in different ways. Please refer to the different coupling ways corresponding to the voltage dividing module 601 in FIG. 6 , which are not repeated here. Repeat.

In addition, on the basis of the radio frequency system shown in Figure 23, the radio frequency system can be further optimized to reduce the components in the radio frequency system, reduce the complexity of the radio frequency system, and reduce the frequency of the radio frequency system on the main board and sub-board of the electronic equipment. area occupied above. For example, the first voltage dividing module 2301 in the radio frequency system can be optimized, and the first voltage dividing resistor R1 in the first voltage dividing module 2301 can be removed to obtain the radio frequency system shown in FIG. 33 .

FIG. 33 is a circuit frame diagram of another radio frequency system provided by an embodiment of the present application. Referring to FIG. 33 , the first voltage dividing module 2301 only includes a second voltage dividing resistor R2, and the first end of the second voltage dividing resistor R2 is connected to The second end of the pull-up resistor R0 in the power supply module 2304 is coupled, and the second end of the second voltage dividing resistor R2 is coupled between the choke inductor L1 and the choke inductor L3.

The power supply module 2304 , the detection module 2303 and the second voltage dividing module 2302 in the radio frequency system are similar to the radio frequency system shown in FIG. 23 , and will not be repeated here.

FIG. 34 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application, and the radio frequency circuit, antenna, DC blocking capacitor and choke inductor shown in FIG. 33 are omitted. Referring to Figure 34, if cable31, cable32, and cable33 are not connected and disconnected, the second voltage dividing resistor R2 in the RF system is short-circuited by cable31, the fourth voltage-dividing resistor R4 is short-circuited by cable32, and the third voltage-dividing resistor R3 is short-circuited by cable33 Short circuit, the current flows through the pull-up resistors R0, cable31, cable32 and cable33, thus reaching the ground potential GND1 to form a loop.

Therefore, at this time, the potential of the detection point is V20=0, where V20 is the potential of the detection point.

However, if cable31 is disconnected and cable32 and cable33 are connected normally, a simplified circuit as shown in FIG. 35 can be formed. FIG. 35 is a simplified schematic diagram of another radio frequency system provided by the embodiment of the present application. Referring to FIG. On, the current flows through the second voltage dividing resistor R2 from the pull-up resistor R0. However, if cable32 and cable33 are not connected and disconnected, the third voltage dividing resistor R3 is short-circuited by cable33, and the fourth voltage dividing resistor R4 is short-circuited by cable32. After the current flows through the second voltage dividing resistor R2, it reaches the ground potential GND1 through cable32 and cable33.

Therefore, the potential of the detection point at this time is V21=V*R2/(R0+R2), where V21 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 dividing resistor R2.

Similarly, if cable31 and cable33 are normally connected and cable32 is disconnected, a simplified circuit as shown in FIG. 36 can be formed. FIG. 36 is a simplified schematic diagram of another radio frequency system provided by this embodiment of the present application. Referring to FIG. 36 , cable31 It is normally connected to cable33, the second voltage dividing resistor R2 is short-circuited by cable31, and the third voltage-dividing resistor R3 is short-circuited by cable33. The connection of cable32 is disconnected, and only the fourth voltage dividing resistor R4 is connected.

Therefore, the potential of the detection point at this time is V22=V*R4/(R0+R4), where V22 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, R4 is the resistance value corresponding to the fourth voltage dividing resistor R4.

Similarly, if cable31 and cable32 are normally connected and cable33 is disconnected, a simplified circuit as shown in FIG. 37 can be formed. FIG. 37 is a simplified schematic diagram of another radio frequency system provided by the embodiment of the present application. Referring to FIG. It is normally connected to cable32, the second voltage dividing resistor R2 is short-circuited by cable31, and the fourth voltage-dividing resistor R4 is short-circuited by cable32. The cable33 is disconnected, and only the third voltage dividing resistor R3 is connected to the RF system.

Therefore, the potential of the detection point at this time is V23=V*R3/(R0+R3), where V23 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 dividing resistor R3.

Corresponding to FIG. 28 to FIG. 31 , referring to FIG. 38 to FIG. 41 , a simplified schematic diagram of the radio frequency system shown in FIG. 33 is respectively shown when two cables or three cables are disconnected.

FIG. 38 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 38 , the cable31 and cable32 of the electronic device are disconnected, the cable33 is normally connected, the third voltage dividing resistor R3 is short-circuited by the cable33, the second The voltage dividing resistor R2 is connected in series with the fourth voltage dividing resistor R4.

Therefore, the potential of the detection point at this time is V24=V*(R2+R4)/(R0+R2+R4), where V24 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The corresponding resistance values, R2 is the resistance value corresponding to the second voltage dividing resistor R2, and R4 is the resistance value corresponding to the fourth voltage dividing resistor R4.

FIG. 39 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 39 , the cable32 and cable33 of the electronic device are disconnected, the cable31 is connected normally, the second voltage dividing resistor R2 is short-circuited by the cable31, and the third The voltage dividing resistor R3 and the fourth voltage dividing resistor R4 are connected in series.

Therefore, the potential of the detection point at this time is V25=V*(R3+R4)/(R0+R3+R4), where V25 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The resistance value corresponding to R0, 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.

FIG. 40 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 40 , the cable31 and cable33 of the electronic device are disconnected, the cable32 is normally connected, the fourth voltage dividing resistor R4 is short-circuited by the cable32, and the second The voltage dividing resistor R2 is connected in series with the third voltage dividing resistor R3.

Therefore, the potential of the detection point at this time is V26=V*(R2+R3)/(R0+R2+R3), where V26 is the potential of the detection point, V is the potential of the DC voltage source V0, and R0 is the pull-up resistor The resistance value corresponding to 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.

FIG. 41 is a simplified schematic diagram of another radio frequency system provided by an embodiment of the present application. As shown in FIG. 41 , cable31, cable32, and cable33 of the electronic device are all disconnected, and the second voltage dividing resistor R2 and the third voltage dividing resistor R3 It is connected in series with the fourth voltage dividing resistor R4.

Therefore, the potential of the detection point at this time is V27=V*(R2+R3+R4)/(R0+R2+R3+R4), where V27 is the potential of the detection point, V is the potential of the DC voltage source V0, and 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.

Further, referring to FIG. 42 , the first voltage dividing module 2301 may further include a capacitor C5 to ground, and the capacitor C5 to ground is arranged between the second end of the second voltage dividing resistor R2 and the ground potential GND2, so as to increase cable31 and cable32 isolation between. Similarly, the second voltage dividing module 2302 may further include a capacitor C8 to ground, and the capacitor C8 to ground is connected in parallel with the third voltage dividing resistor R3 to improve the isolation between cable32 and cable33. The above-mentioned capacitance to ground C5 and capacitance C8 to ground are similar to capacitance to ground C5 and capacitance C8 to ground shown in FIG. 32 , and details are not repeated here.

It should be noted that in the above embodiment, the power supply module 2304 and the second voltage dividing module 2302 of the radio frequency system are located on the sub-board of the electronic device, while the detection module 2303 and the first voltage dividing module 2301 of the radio frequency system are located on the main board of the electronic device. However, in practical applications, the position 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. The position of each circuit module is not limited in this embodiment of the present application.

Moreover, the first voltage dividing module 2301 and the second voltage dividing module 2302 can be coupled between two adjacent cables in different ways. Please refer to the different coupling ways corresponding to the voltage dividing module 601 in FIG. 6 , which are not repeated here. Repeat.

Further, when the power supply module 2304 and the detection module 2303 are respectively located on the main board and the sub-board of the electronic device (for example, the power supply module 2304 is located on the main board and the detection module 2303 is located in the sub-board, or, the power supply module 2304 is located in the sub-board and the detection module 2303 is located in the main board. ), the power supply module 2304 and the detection module 2303 may be coupled through an FPC or through a signal line, which is not limited in this embodiment of the present application.

It should be noted that, in practical applications, applying the above RF system to electronic equipment requires a certain R&D cycle to update and verify the application program that matches the RF system, and the application program that matches the RF system is not updated. Before the verification is completed, the existing application of the electronic device still needs to implement the antenna presence detection mechanism through GPIO, that is, by detecting whether each cable is abnormally connected, the radio frequency communication of the antenna of the electronic device is affected.

Therefore, it is still necessary to add the radio frequency system shown in FIG. 17 , FIG. 22 , FIG. 23 , FIG. 32 , FIG. 33 , and FIG. 42 to the electronic device on the basis of the electronic device with GPIO, so as to implement different functions. For example, take adding the radio frequency system shown in Figure 22 as an example, that is, when the electronic device includes GPIO and 2 cables (cable31 and cable32), adding the radio frequency system shown in Figure 22, the result shown in Figure 43 is obtained. another radio frequency system.

Referring to FIG. 43 , the radio frequency system may include: a GPIO detection module 4301 , a GPIO power supply module 4302 , a voltage divider module 4303 , a detection module 4304 and a power supply module 4305 . Moreover, the radio frequency system may 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 capacitance to ground (C5).

Among them, the coupling mode of the voltage dividing module 4303, the detection module 4304, the power supply module 4305, the multiple DC blocking capacitors, the multiple choke inductors, and the grounding capacitor is the same as the voltage dividing module 1701 and the detection module 1702 shown in FIG. 22. , the power supply module 1703 , a plurality of DC blocking capacitors, a plurality of choke inductors, and a coupling manner of the grounding capacitor are similar, and are not repeated here.

Moreover, the GPIO power supply module 4302 is similar to the power supply module 4305 , and the GPIO detection module 4301 is also similar to the detection module 4304 . The GPIO power supply module 4302 can provide voltage for each cable in the electronic device, and the GPIO detection module 4301 can sample the voltage to determine whether each cable in the electronic device is disconnected.

In the above embodiment, the GPIO power supply module 4302 and the power supply module 4305 of the radio frequency system are located on the sub-board of the electronic device, while the GPIO detection module 4301, the detection module 4304 and the voltage divider module 4303 of the radio frequency system are located on the main board of the electronic device. However, in practical applications, the position 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. The position of each circuit module is not limited in this embodiment of the present application.

Moreover, the voltage dividing module 4303 may be coupled between two adjacent cables in different ways, and reference may be made to the different coupling ways corresponding to the voltage dividing module 601 in FIG. 6 , which will not be repeated here.

In addition, if the detection module 4304 of the radio frequency system and the GPIO detection module 4301 are both located on the main board or sub-board of the electronic device, the detection module 4304 can use the wiring multiplexing method to realize the detection on the basis of the wiring of the GPIO detection module 4301 The wiring of the module 4304 enables the GPIO detection module 4301 to determine whether each cable is properly connected through the detection module 4304 while determining whether each cable is disconnected.

To sum up, in the radio frequency system provided by the embodiments of the present application, at least one voltage divider module coupled to the power supply module is provided in the radio frequency system, and each voltage divider module is coupled in series, wherein each voltage divider module corresponds to a cable, and each voltage divider module corresponds to a cable. A voltage divider module is coupled to both ends of the corresponding cable. If at least one cable is disconnected, the current can flow to the next adjacent circuit module through the voltage divider module corresponding to the cable, so that the resistance in the voltage divider module divides the voltage, then the detection module connected to the power supply module The changing potential can also be detected, so that each cable that is disconnected can be determined according to the changing potential, and there is no need to set a GPIO proportional to the number of cables, which can reduce the hardware required to detect whether each cable is disconnected, and reduce The cost of detecting whether each cable is disconnected.

Moreover, cables can be coupled in series between the power supply module and the voltage divider module, between the voltage divider module and the ground potential, and between two adjacent voltage divider modules, and combined and arranged between the radio frequency system and the radio frequency circuit, and DC blocking capacitors and choke inductors are arranged 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 also prevent the current in the radio frequency system from entering the radio frequency circuit, thereby improving the connection between the radio frequency system and the radio frequency circuit. isolation and improve the accuracy of the RF system.

In addition, by setting the ground capacitance in the voltage divider module, so that the ground capacitance is located between the two radio frequency circuits, the radio frequency signal serially connected to the radio frequency system in the radio frequency circuit can be guided to the ground potential through the ground capacitance, which can prevent The radio frequency signal in one radio frequency circuit enters another radio frequency circuit through the radio frequency system, thereby improving the isolation degree between the two radio frequency circuits.

Further, the radio frequency system provided by the embodiment of the present application may be added to the electronic device including the GPIO by using the route multiplexing method in combination with the original GPIO, so as to reduce the route and save the hardware resources. Moreover, based on the different functions of the original GPIO, combined with the radio frequency system, it 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 functions realized by the radio frequency system.

It should be noted that, in practical applications, the above-mentioned radio frequency system for detecting whether the cable is connected incorrectly can be combined with the radio frequency system for detecting whether the cable is disconnected to obtain the radio frequency system shown in FIG. 44 , see Figure 44 shows the circuit structure diagram of the radio frequency system when the electronic device includes two cables. The radio frequency system may include: a voltage dividing module 4401, a detection module 4402, and a power supply module 4403 and other circuit modules. The radio frequency system may also include : The first node (A), multiple DC blocking capacitors (C1, C2, C3 and C4) and multiple choke inductors (L1, L2, L3 and L4).

The voltage dividing module 4401 , the detection module 4402 and the power supply module 4403 are respectively similar to the voltage dividing module 401 , the detection module 402 and the power supply module 403 , and will not be repeated here.

However, in addition to the first voltage dividing resistor R1 and the second voltage dividing resistor R2 in the voltage dividing module 4401, the voltage dividing module 4401 may further include a fifth voltage dividing resistor R5 whose first end is connected to the power supply The output end of the module 4403 is coupled, and the second end of the fifth voltage dividing resistor R5 is coupled with the second end of the first voltage dividing resistor R1.

In addition, the process of determining the potential of the detection point and determining the connection state of each cable by the detection module 4402 is similar to the foregoing content, and will not be repeated here.

Further, FIG. 45 shows another combined radio frequency system. Referring to FIG. 45 , FIG. 45 shows a circuit structure diagram of the radio frequency system including three cables. The radio frequency system may include: a first voltage divider module 4501, a second voltage divider module 4502, a detection module 4503, a power supply module 4504 and other circuit modules, the radio frequency system may also include: a first node (A), a plurality of DC blocking capacitors (C1, C2, C3, C4, C6 and C7) and multiple choke inductors (L1, L2, L3, L4, L5, L6 and L7).

The first voltage dividing module 4501, the second voltage dividing module 4502, the detection module 4503 and the power supply module 4504 are respectively similar to the first voltage dividing module 801, the second voltage dividing module 802, the detection module 803 and the power supply module 804, here No longer.

Moreover, for the newly added fifth voltage dividing resistor R5 in the voltage dividing module 4501, reference may be made to the voltage dividing module 4401 shown in FIG. 44 , and details are not repeated here.

In addition, in addition to the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 in the second voltage dividing module 4502, the second voltage dividing module 4502 may further include a sixth voltage dividing resistor R6, and the sixth voltage dividing resistor R6 is the third voltage dividing resistor R6. One end is coupled between the DC blocking capacitor C3 and the connection base 43 corresponding to the radio frequency circuit 12 through the choke inductor L5, and the second end of the sixth voltage dividing resistor R6 is coupled with the second end of the third voltage dividing resistor R3.

It should be noted that the process of determining the potential of the detection point and determining the connection state of each cable by the detection module 4503 is similar to the foregoing content, and will not be repeated here.

FIG. 46 is a schematic flowchart of a detection method provided by an embodiment of the present application. As an example and not a limitation, the method can be applied to the processor connected to the radio frequency system as shown in FIG. 2 , see FIG. 46 , the method includes:

Step 4601: Acquire potential information corresponding to the detection point in the radio frequency system.

The potential information is used to indicate the current potential level of the detection point. Moreover, the detection point of the radio frequency system may be the second end of the pull-up resistor of the power supply module in the radio frequency system, or may be another position where the potential changes with the change of the circuit coupling mode in the radio frequency system. The detection point of the radio frequency system is not limited.

In the process of producing electronic equipment, the cable can be installed on the connecting seat of the electronic equipment, but due to too many connecting seats, it may cause multiple cable connection errors. Or, in the process of using the electronic device, the electronic device may be affected by collision and impact, causing the cable in the electronic device to fall off from the connection seat, resulting in the deterioration of the communication quality of the electronic device, or the inability to perform radio frequency communication.

The embodiment of the present application provides a detection method for detecting whether each cable in an electronic device is abnormal, that is, detecting whether each cable is connected incorrectly or disconnected, so that the storage and/or Remind the cable that there is an exception.

In the process of detecting whether the cable is abnormal, the processor can combine with the radio frequency system shown in FIG. 2 to obtain the potential information collected by the detection module in the radio frequency system, so that in the subsequent steps, the processor can determine the electrical potential information according to the potential information. Check whether each cable of the device is abnormal.

For example, the processor can continuously acquire the potential information sent by the detection module in the radio frequency system, or can periodically acquire the potential information sent by the detection module, and the period of acquiring the potential information can be adjusted according to the circuit of the detection module. The method of acquiring the potential information is not limited.

Step 4602 , from a plurality of preset potentials, determine a target preset potential that matches the potential information.

When any cable of the electronic device is abnormal, the current flow in the RF system coupled with each cable will change, and the voltage division of each voltage divider resistor in the RF system will also change accordingly. The potential also changes. Correspondingly, each potential that can be detected by the detection point can be stored as a preset potential in the processor, so that in subsequent steps, an abnormal cable in the electronic device can be determined according to the matched target preset potential.

The number of preset potentials stored in the processor is proportional to the number of cables in the electronic device. If there are more cables in the electronic device, the more preset potentials are stored in the processor.

In a possible implementation manner, after acquiring the potential information detected by the detection module, the processor may compare the potential indicated by the potential information with multiple pre-stored preset potentials, and then determine from multiple comparison results. The target preset potential that matches the potential information.

For example, the processor may subtract the potential indicated by the potential information from each preset potential, use the calculated difference as the comparison result, and then determine the target comparison result with the smallest absolute value of the parameter value from the multiple comparison results , and then the preset potential corresponding to the target comparison result can be used as the target preset potential.

It should be noted that, in practical applications, the processor may pre-store the correspondence between the preset potential and the connection state. The corresponding relationship may include multiple preset potentials and multiple connection states, and each preset potential corresponds to one connection state. For example, the connection state corresponding to the first preset potential in the corresponding relationship may be that cable31 and cable32 are connected incorrectly, that is, cable31 and cable32 are reversed; the connection state corresponding to the second preset potential may be that cable3 is disconnected, or That is, at least one end of the cable3 is detached from the corresponding connection seat.

Correspondingly, in the process of executing step 4602, the processor can obtain a plurality of preset potentials from the corresponding relationship, so that in subsequent steps, it can determine whether each cable of the electronic device is based on the connection state corresponding to each preset potential. Abnormal.

Step 4603: Determine the target connection state corresponding to the target preset potential according to the preset correspondence.

In a possible implementation manner, the processor may search for the connection state corresponding to the target preset potential from the corresponding relationship according to the target preset potential, and then may use the corresponding connection state as the target corresponding to the target preset potential The connection state, that is, the connection state corresponding to the target preset potential is regarded as the target connection state corresponding to the potential information.

It should be noted that after determining the target connection state, the processor can store the target connection state in the memory connected to the processor, so that when the electronic device is maintained, it can determine the target connection state according to the target connection state stored in the memory. The cable of the electronic device is abnormal, which is convenient for the maintenance of the electronic device.

In addition, after the processor finishes executing step 4603, the processor may continue to execute step 4604. Certainly, the processor may 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.

Step 4604 , according to the target connection state, remind the radio frequency connection line to be abnormally connected.

After the processor determines the target connection state, if the target connection state indicates that the radio frequency connection line is abnormally connected, the processor can control the display screen and/or the speaker coupled with the processor to give an alarm to the user, and promptly remind the user of at least one of the electronic equipment. The cable is abnormal, so that the user can maintain the electronic equipment in time.

For example, the processor can obtain the pre-stored cable exception text, and control the display screen to display the cable exception text. For example, the display screen can display "The radio frequency cable is connected incorrectly, please check!", or it can display "The radio frequency cable is disconnected." ,Please check!". Of course, the processor can also obtain the pre-stored abnormal voice of the cable first, and control the speaker to play the abnormal voice of the cable. For example, the speaker can play "The radio frequency cable is connected incorrectly, please check!", or it can play "The radio frequency cable is disconnected." ,Please check!". Further, when the display screen displays the abnormal cable text, the speaker can play the abnormal cable voice corresponding to the abnormal cable text.

To sum up, the detection method provided by the embodiment of the present application obtains the potential information corresponding to the detection point in the radio frequency system, and determines the target preset potential matching the potential information from a plurality of preset preset potentials, Then, the target connection state corresponding to the target preset potential is determined from the corresponding relationship, that is, information such as whether each cable in the electronic device is abnormal, and the abnormal type of each cable. Through the preset potential corresponding to the abnormality of each cable, on the basis of determining the abnormality of the cable, it is possible to further accurately determine which cable of the electronic device is abnormal, and can also determine the abnormal type of the abnormal cable (such as disconnection). or connection error), without setting GPIO proportional to the number of cables, it can reduce the hardware cost of detecting cables, and improve the functional diversity and flexibility of detecting cables.

The circuit architectures shown in FIG. 1 to FIG. 45 and the method flow shown in FIG. 46 can be applied to a terminal device. The electronic devices involved in the embodiments of the present application are described below. Please refer to FIG. 47 , which is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

The electronic device may include a processor 4710, an external memory interface 4720, an internal memory 4721, a universal serial bus (USB) interface 4730, a charge management module 4740, a power management module 4741, a battery 4742, an antenna 1, an antenna 2, Mobile communication module 4750, wireless communication module 4760, audio module 4770, speaker 4770A, receiver 4770B, microphone 4770C, headphone jack 4770D, sensor module 4780, key 4790, motor 4791, indicator 4792, camera 4793, display screen 4794, and user Identity module (subscriber identification module, SIM) card interface 4795 and so on. The sensor module 4780 may include a pressure sensor 4780A, a gyroscope sensor 4780B, an air pressure sensor 4780C, a magnetic sensor 4780D, an acceleration sensor 4780E, a distance sensor 4780F, a proximity light sensor 4780G, a fingerprint sensor 4780H, a temperature sensor 4780J, a touch sensor 4780K, and ambient light. Sensor 4780L, Bone Conduction Sensor 4780M, etc.

It can be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments of the present application, the electronic device may include more or less components than shown, or combine some components, or separate some components, or arrange different components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 4710 may include one or more processing units, for example, the processor 4710 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor ( image signal processor, ISP), controller, memory, video codec, digital signal processor (DSP), baseband processor, and/or neural-network processing unit (NPU), etc. . Wherein, different processing units may be independent devices, or may be integrated in one or more processors.

Among them, the controller can be the nerve center and command center of the electronic device. The controller can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.

A memory may also be provided in the processor 4710 for storing instructions and data. In some embodiments, the memory in processor 4710 is cache memory. This memory may hold instructions or data that have just been used or recycled by the processor 4710. If the processor 4710 needs to use the instruction or data again, it can be called directly from the memory. Repeated accesses are avoided, and the waiting time of the processor 4710 is reduced, thereby increasing the efficiency of the system.

In some embodiments, the processor 4710 may include one or more interfaces. The interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuitsound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver (universal asynchronous receiver) interface /transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (SIM) interface, and/or Universal serial bus (universal serial bus, USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus that includes a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 4710 may contain multiple sets of I2C buses. The processor 4710 can be respectively coupled to the touch sensor 4780K, charger, flash, camera 4793, etc. through different I2C bus interfaces. For example, the processor 4710 can couple the touch sensor 4780K through the I2C interface, so that the processor 4710 and the touch sensor 4780K communicate with each other through the I2C bus interface, so as to realize the touch function of the electronic device.

The I2S interface can be used for audio communication. In some embodiments, the processor 4710 may contain multiple sets of I2S buses. The processor 4710 can be coupled with the audio module 4770 through an I2S bus to implement communication between the processor 4710 and the audio module 4770. In some embodiments, the audio module 4770 can transmit audio signals to the wireless communication module 4760 through the I2S interface, so as to realize the function of answering calls through a Bluetooth headset.

The PCM interface can also be used for audio communications, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 4770 and the wireless communication module 4760 may be coupled through a PCM bus interface. In some embodiments, the audio module 4770 can also transmit audio signals to the wireless communication module 4760 through the PCM interface, so as to realize the function of answering calls through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 4710 with the wireless communication module 4760. For example, the processor 4710 communicates with the Bluetooth module in the wireless communication module 4760 through the UART interface to realize the Bluetooth function. In some embodiments, the audio module 4770 can transmit audio signals to the wireless communication module 4760 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.

The MIPI interface can be used to connect the processor 4710 with the display screen 4794, the camera 4793 and other peripheral devices. The MIPI interface includes a camera serial interface (camera serial interface, CSI), a display serial interface (display serial interface, DSI), and the like. In some embodiments, the processor 4710 communicates with the camera 4793 through the CSI interface, so as to realize the photographing function of the electronic device. The processor 4710 communicates with the display screen 4794 through the DSI interface to realize the display function of the electronic device.

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 4710 with the camera 4793, the display screen 4794, the wireless communication module 4760, the audio module 4770, the sensor module 4780, and the like. The GPIO interface can also be configured as I2C interface, I2S interface, UART interface, MIPI interface, etc.

The USB interface 4730 is an interface that conforms to the USB standard specification, and can specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like. The USB interface 4730 can be used to connect a charger to charge the electronic device, and can also be used to transfer data between the electronic device and peripheral devices. It can also be used to connect headphones to play audio through the headphones. The interface can also be used to connect other electronic devices, such as AR devices.

It can be understood that the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration, and does not constitute a structural limitation of the electronic device. In other embodiments of the present application, the electronic device may also adopt different interface connection manners in the foregoing embodiments, or a combination of multiple interface connection manners.

The charging management module 4740 is used to receive charging input from the charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 4740 may receive charging input from the wired charger through the USB interface 4730. In some wireless charging embodiments, the charging management module 4740 may receive wireless charging input through a wireless charging coil of the electronic device. While the charging management module 4740 charges the battery 4742, it can also supply power to the electronic device through the power management module 4741.

The power management module 4741 is used to connect the battery 4742 , the charging management module 4740 and the processor 4710 . The power management module 4741 receives input from the battery 4742 and/or the charge management module 4740, and supplies power to the processor 4710, the internal memory 4721, the external memory, the display screen 4794, the camera 4793, and the wireless communication module 4760. The power management module 4741 can also be used to monitor battery capacity, battery cycle times, battery health status (leakage, impedance) and other parameters. In some other embodiments, the power management module 4741 can also be provided in the processor 4710 . In other embodiments, the power management module 4741 and the charging management module 4740 may also be provided in the same device.

The wireless communication function of the electronic device can be implemented by the antenna 1, the antenna 2, the mobile communication module 4750, the wireless communication module 4760, the modulation and demodulation processor, the baseband processor, and the like.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in an electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, the antenna 1 can be multiplexed as a diversity antenna of the wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 4750 can provide wireless communication solutions including 2G/3G/4G/5G etc. applied on the electronic device. The mobile communication module 4750 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), and the like. The mobile communication module 4750 can receive electromagnetic waves from the antenna 1, filter and amplify the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 4750 can also amplify the signal modulated by the modulation and demodulation processor, and then convert it into electromagnetic waves and radiate it out through the antenna 1 . In some embodiments, at least part of the functional modules of the mobile communication module 4750 may be provided in the processor 4710. In some embodiments, at least part of the functional modules of the mobile communication module 4750 may be provided in the same device as at least part of the modules of the processor 4710 . The radio frequency circuit in the above embodiment may be the mobile communication module 4750 .

The modem processor may include a modulator and a demodulator. Wherein, the modulator is used to modulate the low frequency baseband signal to be sent into a medium and high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator transmits the demodulated low-frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and passed to the application processor. The application processor outputs sound signals through audio devices (not limited to speaker 4770A, receiver 4770B, etc.), or displays images or videos through display screen 4794. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be independent of the processor 4710, and may be provided in the same device as the mobile communication module 4750 or other functional modules.

The wireless communication module 4760 can provide applications on electronic devices including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), global navigation satellite systems ( global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 4760 may be one or more devices integrating at least one communication processing module. The wireless communication module 4760 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 4710 . The wireless communication module 4760 can also receive the signal to be sent from the processor 4710 , perform frequency modulation on it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2 .

In some embodiments, the antenna 1 of the electronic device is coupled with the mobile communication module 4750, and the antenna 2 is coupled with the wireless communication module 4760, so that the electronic device can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code 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 may include a global positioning system (GPS), a global navigation satellite system (GLONASS), a Beidou satellite navigation system (BDS), a quasi-zenith satellite system (quasi- zenith satellite system, QZSS) and/or satellite based augmentation systems (SBAS).

The electronic device realizes the display function through the GPU, the display screen 4794, and the application processor. The GPU is a microprocessor for image processing, which connects the display screen 4794 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 4710 may include one or more GPUs that execute program instructions to generate or alter display information.

Display screen 4794 is used to display images, videos, etc. Display screen 4794 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 or an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode). , AMOLED), flexible light-emitting diodes (flex light-emitting diodes, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diodes (quantum dot light emitting diodes, QLED) and so on. In some embodiments, the electronic device may include 1 or N display screens 4794, where N is a positive integer greater than 1.

The external memory interface 4720 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor 4710 through the external memory interface 4720 to realize the data storage function. For example to save files like music, video etc in external memory card.

Internal memory 4721 may be used to store computer executable program code, which includes instructions. The processor 4710 executes various functional applications and data processing of the electronic device by executing the instructions stored in the internal memory 4721 . The internal memory 4721 may include a storage program area and a storage data area. The storage program area can store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), and the like. The storage data area can store data (such as audio data, phone book, etc.) created during the use of the electronic device. In addition, the internal memory 4721 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), and the like.

The electronic device can implement audio functions through an audio module 4770, a speaker 4770A, a receiver 4770B, a microphone 4770C, an earphone interface 4770D, and an application processor. Such as music playback, recording, etc.

Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. Module completion, that is, dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated in one processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit, and the above-mentioned integrated units may adopt hardware. It can also be realized in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above-mentioned system, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the foregoing embodiments, the description of each embodiment has its own emphasis. For parts that are not described or described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the system embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can be implemented by a computer program to instruct the relevant hardware. The computer program can be stored in a computer-readable storage medium, and the computer program When executed by a processor, the steps of each of the above method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include at least: any entity or device capable of carrying the computer program code to the terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signals, telecommunication signals, and software distribution media. For example, U disk, mobile hard disk, disk or CD, etc. In some jurisdictions, under legislation and patent practice, computer readable media may not be electrical carrier signals and telecommunications signals.

Finally, it should be noted that: the above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this, and any changes or replacements within the technical scope disclosed in the present application should be covered by the present application. within the scope of protection of the application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (20)

1. A radio frequency system, comprising: a first radio frequency circuit, a second radio frequency circuit, a first antenna, a second antenna, a first radio frequency connection line and a second radio frequency connection line, the first antenna passing through all the The first radio frequency connection line is coupled with the first radio frequency circuit or the second radio frequency circuit, and the second antenna is connected with the first radio frequency circuit or the second radio frequency circuit through the second radio frequency connection line coupled; The radio frequency system further includes: a first node, a first voltage dividing element and a second voltage dividing element; The first node is coupled to a first potential, the first node is coupled to a first end of the first radio frequency connection line, the second end of the second radio frequency connection line is coupled to a second potential, and the first end of the radio frequency connection line is coupled to a second potential. a potential higher than the second potential; 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 connection line and the second radio frequency connection line, and the the first potential is higher than the third potential; The second voltage dividing element is coupled in series between the first radio frequency connection line and the second radio frequency connection line. 2 . The radio frequency system according to claim 1 , wherein the radio frequency system further comprises: a first capacitor to ground, the first capacitor to ground is connected in parallel with the first voltage dividing element. 3 . 3. The radio frequency system according to claim 1 or 2, wherein the radio frequency system further comprises: a third voltage divider element, the third voltage divider element is coupled in parallel to two sides of the first radio frequency connection line. end. 4. The radio frequency system according to any one of claims 1 to 3, wherein the radio frequency system further comprises a power supply, and the first node is coupled to the power supply; The power supply includes a DC voltage source and a pull-up resistor, a first end of the pull-up resistor is coupled to the output end of the DC voltage source, and a second end of the pull-up resistor is coupled to the first node. 5 . The radio frequency system according to claim 1 , wherein 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. 6 . 6 . The radio frequency system according to claim 5 , wherein the detection module is an analog-to-digital converter (ADC) or a voltage comparator. 7 . 7. The radio frequency system according to any one of claims 1 to 6, wherein the radio frequency system further comprises: a first connection base, a second connection base, a third connection base and a fourth connection base; The first DC blocking capacitor, the second DC blocking capacitor, the third DC blocking capacitor and the fourth DC blocking capacitor; a first choke inductance, a second choke inductance, a third choke inductance, and a fourth choke inductance; The first radio frequency circuit is coupled to the first connection base, the first antenna is coupled to the second connection base, the second radio frequency circuit is coupled to the third connection base, and the second radio frequency circuit is coupled to the third connection base. the antenna is coupled with the fourth connection base; The first DC blocking capacitor is coupled between the first radio frequency circuit and the first connection seat, and the second DC blocking capacitor is coupled between the first antenna and the second connection seat, so The third DC blocking capacitor is coupled between the second radio frequency circuit and the third connection base, and the fourth DC blocking capacitor is coupled between the second antenna and the fourth connection base; The first end of the first choke inductance is coupled between the first DC blocking capacitor and the first connection seat, and the second end of the first choke inductance is connected to the first voltage dividing element. The second end is coupled to each other, the first end of the second choke inductance is coupled between the second DC blocking capacitor and the second connection seat, and the second end of the second choke inductance is coupled to the second connection seat. The first node is coupled to each other, the first end of the third choke inductance is coupled between the third DC blocking capacitor and the third connection seat, and the second end of the third choke inductance is coupled to the third connection seat. The second end of the first voltage dividing element is coupled to each other, the first end of the fourth choke inductance is coupled between the fourth DC blocking capacitor and the fourth connection seat, and the fourth end of the choke inductance The second terminal is coupled to the second potential. 8 . The radio frequency system according to claim 1 , wherein the potential of the first node varies with the change of the coupling mode of the first radio frequency connection line and the second radio frequency connection line. 9 . Variety. 9 . The radio frequency system according to claim 8 , wherein when two ends of the first radio frequency connection line are respectively coupled to the first radio frequency circuit and the first antenna, and the second radio frequency is connected to the second radio frequency When the two ends of the line are respectively coupled with the second radio frequency circuit and the second antenna, the potential of the first node is in a first state; When the two ends of the first radio frequency connection line are respectively coupled with the first radio frequency circuit and the second antenna, or the two ends of the first radio frequency connection line are respectively coupled with the second radio frequency circuit and the second radio frequency circuit When an antenna is coupled, the potential of the first node is in a second state. 10. The radio frequency system according to any one of claims 1 to 9, 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 are ground potential. 11. The radio frequency system according to any one of claims 1 to 10, wherein the radio frequency system further comprises: a third radio frequency circuit, a third antenna and a third radio frequency connecting line, the third radio frequency circuit passing through the the third radio frequency connection line is coupled with the first antenna, the second antenna or the third antenna; The radio frequency system further includes: a fourth voltage dividing element and a fifth voltage dividing element; The first end of the fourth voltage dividing element is coupled to the third potential, and the 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 series between the second radio frequency connection line and the third radio frequency connection line. 12 . The radio frequency system according to claim 11 , wherein the radio frequency system further comprises: a second capacitor to ground, the second capacitor to ground is connected in parallel with the fourth voltage dividing element. 13 . 13 . The radio frequency system according to claim 11 or 12 , wherein the radio frequency system further comprises: a sixth voltage dividing element, the sixth voltage dividing element is coupled in parallel to two ends of the second radio frequency connection line. 14 . end. 14. The radio frequency system according to any one of claims 11 to 13, wherein the radio frequency system further comprises: the fifth connecting seat and the sixth connecting seat; The fifth blocking capacitor and the sixth blocking capacitor; the fourth choke inductance, the fifth choke inductance and the sixth choke inductance; Wherein, the third radio frequency circuit is coupled with the fifth connection base, and the third antenna is coupled with the sixth connection base; The fifth DC blocking capacitor is coupled between the third radio frequency circuit and the fifth connection base, and the sixth DC blocking capacitor is coupled between the third antenna and the sixth connection base; The first end of the fourth choke inductance is coupled between the fifth DC blocking capacitor and the fifth connection seat, and the second end of the fourth choke inductance is coupled with the second potential, The first end of the fifth choke inductor is coupled between the fourth DC blocking capacitor and the fourth connection seat, and the second end of the fifth choke inductor is in phase with the second end of the fourth voltage dividing element. coupling, the first end of the sixth choke inductance is coupled between the sixth DC blocking capacitor and the sixth connection seat, and the second end of the sixth choke inductance is connected to the fourth voltage divider The second ends of the elements are coupled. 15 . The radio frequency system according to claim 11 , wherein the fourth voltage dividing element and the fifth voltage dividing element are both resistors. 16 . 16. The radio frequency system according to any one of claims 1 to 15, wherein the radio frequency system further comprises a general-purpose input/output port GPIO detection module, and the first node is further coupled to the GPIO detection module. 17. A radio frequency system, characterized in that it comprises: N radio frequency circuits, N antennas and N radio frequency connecting lines, where N is an integer greater than or equal to 2, and the i th radio frequency circuit is connected to the ith radio frequency connecting line through the i th radio frequency connecting line. The ith antenna coupling i is a positive integer less than or equal to N-1; The radio frequency system includes: a first node, N-1 first voltage dividing elements and N-1 second voltage dividing elements; The first node is coupled to the first potential, the first node is coupled to the first end of the i-th radio frequency connection line, and the second end of the i+1-th radio frequency connection line is coupled to the second potential , the first potential is higher than the second potential; The first end of the i-th first voltage dividing element is coupled to the third potential, and the second end of the i-th first voltage dividing element is coupled to the i-th radio frequency connection line and the i+1-th Between the radio frequency connection lines, the first potential is higher than the third potential; The second voltage dividing element is coupled in series between the i th radio frequency connection line and the i+1 th radio frequency connection line. 18. An electronic device, comprising: a memory, a processor, a computer program stored in the memory and executable on the processor, and a radio frequency according to any one of claims 1 to 17 system, when the processor executes the computer program, based on the radio frequency system according to any one of claims 1 to 17, the detection of the radio frequency connection line in the electronic device is realized. 19. The electronic device according to claim 18, wherein the electronic device further comprises: at least one of a display and a speaker; When the radio frequency connection line in the electronic device is abnormally connected, an alarm is issued through the display or the speaker. 20. A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, based on the radio frequency system according to any one of claims 1 to 17 , to realize the detection of radio frequency connection lines in electronic equipment.

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