CN114442000A

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

Info

Publication number: CN114442000A
Application number: CN202011206453.1A
Authority: CN
Inventors: 彭彪; 姜丕锦; 蔡佳佳; 冯宝新; 刘抒民
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2022-05-06

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 field of radio frequency communication technologies, and in particular, to a radio frequency system, an electronic device, and a computer-readable storage medium.

Background

The radio frequency connecting line (RF cable) is used for coupling a radio frequency circuit and an antenna in electronic equipment such as terminal equipment, so that the terminal equipment can carry out radio frequency communication through the coupled radio frequency circuit and the coupled antenna. The radio frequency circuit can be positioned on a mainboard of the terminal equipment, and the mainboard can also comprise a connecting seat corresponding to the radio frequency circuit; the sub-plate can comprise connecting seats which are coupled with the antennas and correspond to the antennas one by one; the radio frequency connecting line can couple the radio frequency circuit and the antenna through the connecting seats on the main board and the auxiliary board.

With the development of communication technology, the number of antennas in electronic devices such as terminal devices is increasing, so that the number of radio frequency connection lines in the terminal devices is increasing, and connection abnormality (abnormal conditions such as connection error or disconnection) often occurs in the radio frequency connection lines.

Disclosure of Invention

The application provides a radio frequency system, electronic equipment and a computer readable storage medium, which solves the problem that the radio frequency connecting line in the electronic equipment cannot be accurately determined to be abnormal in connection in the prior art.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, a radio frequency system is provided, comprising: the antenna comprises a first radio frequency circuit, a second radio frequency circuit, a first antenna, a second antenna, a first radio frequency connecting line and a second radio frequency connecting line, wherein the first antenna is coupled with the first radio frequency circuit or the second radio frequency circuit through the first radio frequency connecting line, and the second antenna is coupled with the first radio frequency circuit or the second radio frequency circuit through the second radio frequency connecting line;

the radio frequency system further comprises: a first node, a first voltage dividing element and a second voltage dividing element;

the first node is coupled with a first potential, the first node is coupled with a first end of the first radio frequency connecting line, a second end of the second radio frequency connecting line is coupled with a second potential, and the first potential is higher than the second potential;

a first end of the first voltage division element is coupled with a third potential, a second end of the first voltage division element is coupled between the first radio frequency connection line and the second radio frequency connection line, and the first potential is higher than the third potential;

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

Through set up first partial pressure component and second partial pressure component in radio frequency system, when first radio frequency connecting wire and second radio frequency connecting wire connection error, the flow direction of electric current changes among the radio frequency system, the partial pressure of first partial pressure component and second partial pressure component also can change, then the electric potential of first node also can change, thereby can confirm first radio frequency connecting wire and second radio frequency connecting wire connection error according to the electric potential that changes, need not to set up the GPIO that is directly proportional with cable quantity, required hardware when can reduce and detect whether each cable connects the disconnection, and reduce and detect whether each cable connects the required cost of disconnection.

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

By arranging the first ground-to-ground capacitor, the first ground-to-ground capacitor is positioned between the two radio frequency circuits, and then radio frequency signals of a radio frequency system connected in series in the radio frequency circuits can be guided to a third potential, namely a ground potential, through the first ground-to-ground capacitor, so that the radio frequency signals in one radio frequency circuit can be prevented from entering the other radio frequency circuit through the radio frequency system, and the isolation between the two radio frequency circuits can be improved.

Based on any one of the possible implementation manners of the first aspect, in a second possible implementation manner of the first aspect, the radio frequency system further includes: a third voltage dividing element coupled in parallel across the first RF connection line.

Through adding the third voltage division element, the function of detecting connection errors can be combined on the basis that the radio frequency system has the function of detecting disconnection, so that the functional diversity of the radio frequency system is improved, and the cost for detecting that the radio frequency connecting line is in different abnormal states is reduced.

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

the power supply includes: the pull-up circuit comprises a direct current voltage source and a pull-up resistor, wherein a first end of the pull-up resistor is coupled with an output end of the direct current voltage source, and a second end of the pull-up resistor is coupled with the first node.

By adopting the direct-current voltage source to supply power to the radio frequency system, the stability of the radio frequency connecting line can be improved, and the safety and the accuracy of the radio frequency connecting line can be improved by the pull-up resistor.

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

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.

The detection module comprising different circuits is adopted to detect the potential of the first node, so that the flexibility of detecting the radio frequency connecting line can be improved. Furthermore, by detecting the potential through the ADC or the voltage comparator, a plurality of potentials of different magnitudes of the first node can be recognized, and detection of a plurality of potentials can be supported.

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

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

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

wherein the first radio frequency circuit is coupled to the first connector block, the first antenna is coupled to the second connector block, the second radio frequency circuit is coupled to the third connector block, and the second antenna is coupled to the fourth connector block;

the first blocking capacitor is coupled between the first radio frequency circuit and the first connection socket, the second blocking capacitor is coupled between the first antenna and the second connection socket, the third blocking capacitor is coupled between the second radio frequency circuit and the third connection socket, and the fourth blocking capacitor is coupled between the second antenna and the fourth connection socket;

a first end of the first choke inductor is coupled between the first blocking capacitor and the first connection socket, a second end of the first choke inductor is coupled with a second end of the first voltage dividing element, a first end of the second choke inductor is coupled between the second blocking capacitor and the second connection socket, a second end of the second choke inductor is coupled with the first node, a first end of the third choke inductor is coupled between the third blocking capacitor and the third connection socket, a second end of the third choke inductor is coupled with the second end of the first voltage dividing element, a first end of the fourth choke inductor is coupled between the fourth blocking capacitor and the fourth connection socket, and a second end of the fourth choke inductor is coupled with the second voltage potential.

Through setting up blocking capacitance and choke inductance, can prevent that the radio frequency signal in the radio frequency circuit from getting into the radio frequency system, also can prevent that the electric current in the radio frequency system from getting into the radio frequency circuit to can improve the isolation between radio frequency system and the radio frequency circuit, improve the degree of accuracy of radio frequency system.

Based on any one of the possible implementation manners of the first aspect, in a seventh possible implementation manner of the first aspect, the potential of the first node changes with a change of a coupling manner of the first radio frequency connection line and the second 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 connecting line and the second radio frequency connecting line, so that the first node is used as a detection point, and the coupling mode of the first radio frequency connecting line and the second radio frequency connecting line is determined according to the change of the potential of the detection point.

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

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

The coupling state of the first radio frequency connecting line and the second radio frequency connecting line can be determined based on the fact that the detection point is in the first potential state or the second potential state, so that whether the radio frequency connecting lines are abnormally connected or not can be determined according to the potential state of the detection point, and the accuracy and flexibility of detecting whether the radio frequency connecting lines are abnormally connected or not can be improved.

In a ninth possible implementation manner of the first aspect, based on any one of the possible implementation manners 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 adopting the resistor as the voltage dividing element, the cost for detecting the radio frequency connecting line can be reduced.

Based on any one of the possible implementation manners 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 third radio frequency circuit coupled to the first antenna, the second antenna, or the third antenna through the third radio frequency connection line;

the radio frequency system further comprises: a fourth voltage dividing element and a fifth voltage dividing element;

a first end of the fourth voltage dividing element is coupled with the third potential, and a second end of the fourth voltage dividing element is coupled between the second radio frequency connecting line and the third radio frequency connecting 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 the radio frequency system in the electronic equipment comprising the 3 radio frequency connecting lines, the connection state of each radio frequency connecting line can be determined through a small number of components, the cost for detecting the radio frequency connecting lines is reduced, and the flexibility for detecting the radio frequency connecting lines 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 capacitance to ground connected in parallel with the fourth voltage divider element.

By setting the ground capacitor, the ground capacitor is positioned between the two radio frequency circuits, and then radio frequency signals of a radio frequency system connected in series in the radio frequency circuits can be guided to a third potential, namely a ground potential, through the ground capacitor, so that the radio frequency signals in one radio frequency circuit can be prevented from entering the other radio frequency circuit through the radio frequency system, and the isolation between the two radio frequency circuits can be improved.

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: and the sixth voltage division element is coupled at two ends of the second radio frequency connecting line in parallel.

Through adding the sixth voltage division element, the function of detecting connection errors can be combined on the basis that the radio frequency system has the function of detecting disconnection, so that the functional diversity of the radio frequency system is improved, and the cost for detecting that the radio frequency connecting line is in different abnormal states is reduced.

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:

a fifth connecting seat and a sixth connecting seat;

a fifth blocking capacitor and a sixth blocking capacitor;

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

wherein the third rf circuit is coupled to the fifth connector block and the third antenna is coupled to the sixth connector block;

the fifth blocking capacitor is coupled between the third radio frequency circuit and the fifth connecting seat, and the sixth blocking capacitor is coupled between the third antenna and the sixth connecting seat;

the first end of the fourth choke inductor is coupled between the fifth blocking capacitor and the fifth connecting base, the second end of the fourth choke inductor is coupled with the second potential, the first end of the fifth choke inductor is coupled between the fourth blocking capacitor and the fourth connecting base, the second end of the fifth choke inductor is coupled with the second end of the fourth voltage dividing element, the first end of the sixth choke inductor is coupled between the sixth blocking capacitor and the sixth connecting base, and the second end of the sixth choke inductor is coupled with the second end of the fourth voltage dividing element.

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

Based on any one of the possible implementation manners 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 coupled with the GPIO detection module.

Through on the basis of the electronic equipment including the GPIO, the radio frequency system provided by the embodiment of the application is added by adopting a wiring multiplexing mode in combination with the original GPIO, so that wiring is reduced, and hardware resources are saved. Moreover, on the basis that the original GPIO has the function of determining whether each cable is disconnected or not, whether each cable of the electronic equipment is connected wrongly or not can be determined by combining the radio frequency system, so that the functions of the radio frequency system can be enriched, and the diversity of the functions realized by the radio frequency system is improved.

In a second aspect, there is provided a radio frequency system comprising: the antenna comprises N radio frequency circuits, N antennas and N radio frequency connecting lines, wherein N is an integer greater than or equal to 2, the ith radio frequency circuit is coupled with the ith antenna through the ith radio frequency connecting line, and 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 with a first potential, the first node is coupled with a first end of the ith radio frequency connecting line, a second end of the (i + 1) th radio frequency connecting line is coupled with a second potential, and the first potential is higher than the second potential;

the first end of the ith first voltage division element is coupled with a third potential, the second end of the ith first voltage division element is coupled between the ith radio frequency connection line and the (i + 1) th radio frequency connection line, and the first potential is higher than the third potential;

the ith said second voltage dividing element is coupled in series between the ith said radio frequency connection line and the (i + 1) th said radio frequency connection line.

Through set up N partial pressure component in the radio frequency system, when two at least radio frequency connecting lines connect the mistake, the flow direction of electric current changes among the radio frequency system, the partial pressure of N partial pressure component also can change, then the electric potential of first node also can change, thereby can confirm first radio frequency connecting line and second radio frequency connecting line connection mistake according to the electric potential that changes, need not to set up the GPIO that is directly proportional with cable quantity, required hardware when can reduce and detect whether each cable connects the disconnection, and reduce and detect whether each cable connects the required cost of disconnection.

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

Based on any one of the possible implementation manners 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, wherein the ith third voltage dividing element is coupled to two ends of the ith radio frequency connecting line in parallel.

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

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

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.

The detection module comprising different circuits is adopted to detect the potential of the first node, so that the flexibility of detecting the radio frequency connecting line can be improved. Further, by detecting the potential by the ADC or the voltage comparator, a plurality of potentials of different magnitudes at the first node can be identified, and detection of a plurality of potentials can be supported.

Based on any one of the possible implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the radio frequency system further includes: 2N connecting seats, 2N blocking capacitors and a plurality of choke inductors;

the two ends of the ith radio frequency connecting wire are respectively coupled with the 2i-1 th connecting seat and the 2i th connecting seat;

the direct current blocking capacitor is coupled between each antenna and the corresponding connecting seat, and the direct current blocking capacitor is coupled between each radio frequency circuit and the corresponding connecting seat;

each of the second voltage dividing elements is coupled with a choke inductor between the adjacent connecting socket, a choke inductor is coupled between the 1 st connecting socket and the first node, and the 2 Nth connecting socket is coupled to the second potential.

Through setting up blocking capacitance and choke inductance, can prevent that the radio frequency signal among the radio frequency circuit from getting into the radio frequency system, also can prevent that the electric current among the radio frequency system from getting into the radio frequency circuit to can improve the isolation between radio frequency system and the radio frequency circuit, improve the degree of accuracy of radio frequency system.

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

In an eighth possible implementation manner of the second aspect, based on any one of the possible implementation manners of the second aspect, the first voltage dividing element and the second voltage dividing element are both resistors.

By adopting the resistor as a voltage dividing element, the cost for detecting the radio frequency connecting line can be reduced.

Based on any one of the possible implementation manners 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 coupled with a GPIO power supply of the radio frequency system.

In a third aspect, an electronic device is provided, including: a memory, a processor, a computer program stored in the memory and executable on the processor, and the radio frequency system according to any of the first and second aspects, wherein the processor, when executing the computer program, implements the detection of the radio frequency connection line in the electronic device based on the radio frequency system according to any of the first and second aspects.

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

and when the radio frequency connecting wire in the electronic equipment is abnormally connected, alarming is carried out through the display or the loudspeaker.

In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program, which, when executed by a processor, enables detection of a radio frequency connection line in an electronic device based on the radio frequency system according to any one of the first and second aspects.

Drawings

Fig. 1 is a scene schematic diagram of a scene involved in a radio frequency system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a system architecture related to a radio frequency system according to an embodiment of the present application;

fig. 3 is a schematic system architecture diagram of another radio frequency system according to an embodiment of the present application;

fig. 4 is a circuit block diagram of a radio frequency system according to an embodiment of the present application;

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

FIG. 6 is a simplified schematic diagram of another RF system provided by an embodiment of the present application;

fig. 7 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 8 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 9 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 10 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 11 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 12 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 13 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 14 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 15 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 16 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 17 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 18 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 19 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 20 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 21 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 22 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 23 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 24 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 25 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 26 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 27 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 28 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 29 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 30 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 31 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 32 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 33 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 34 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 35 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 36 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 37 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 38 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

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

fig. 40 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 41 is a simplified schematic diagram of yet another rf system provided by an embodiment of the present application;

fig. 42 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 43 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 44 is a circuit block diagram of another rf system provided in an embodiment of the present application;

fig. 45 is a circuit block diagram of another rf system provided in an embodiment of the present application;

FIG. 46 is a schematic flow chart diagram of a detection method provided by an embodiment of the present application;

fig. 47 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known circuits and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise.

With the increase of the number of the radio frequency connection lines in the electronic devices such as the terminal device, a general-purpose input/output (GPIO) port proportional to the number of the radio frequency connection lines may be added to the terminal device, and the GPIO port is used to detect whether the connection of each radio frequency connection line is abnormal (e.g., abnormal conditions such as connection error or disconnection). In the detection process, the radio frequency connecting line with abnormal connection in the plurality of radio frequency connecting lines can be determined through the potential detected by each GPIO.

However, since the number of GPIOs is proportional to the number of rf connection lines, the number of GPIOs required for detection needs to be increased as the number of rf connection lines increases, which causes problems of high cost and waste of hardware resources. Therefore, the embodiment of the application provides a radio frequency system for detecting a radio frequency connecting line in electronic equipment through a small number of components.

First, a scenario related to an embodiment of the present application is described, and referring to fig. 1, an electronic device may include a main board and a sub board. The motherboard is provided with a plurality of rf circuits (2 rf circuits are exemplarily illustrated in fig. 1), and each rf circuit can be connected to a corresponding connecting seat on the motherboard. Furthermore, the electronic device may further comprise a plurality of antennas, each of which may be connected to a corresponding connection socket on the sub-board, similar to the radio frequency circuit.

Both the main Board and the auxiliary Board of the electronic device can be Printed Circuit Boards (PCBs), and the main Board and the auxiliary Board are not limited in the embodiment of the present application.

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 correspond to a connection socket respectively; the sub-board comprises 2 connecting seats, the connecting seat on the left side of the sub-board corresponds to the antenna 22, the connecting 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 with the corresponding connecting seats on the sub-board.

The rf circuit 11 may include one or more devices selected from a power amplifier, a filter, a linear amplifier, and a switch, and the rf circuit 11 may be further coupled to a processor (such as a baseband processor or an rf transceiver, etc.) for generating a transmission signal, and the rf circuit 11 transfers the transmission signal to the antenna 21 through an rf connection line (hereinafter, referred to as a cable)31 and transmits the generated wireless signal from the antenna 21. The antenna 21 can also receive wireless signals, and the antenna 21 transfers the received wireless signals to the radio frequency circuit 11 through the cable31 and transfers the received wireless signals to the processor through the radio frequency circuit 11. Similarly, the rf circuit 12 may also include one or more of a power amplifier, a filter, a linear amplifier, and a switch, and the rf circuit 12 may also be coupled to a processor (e.g., a baseband processor or a radio frequency transceiver, etc.) for generating the transmit signal, and the rf circuit 12 may pass the transmit signal to the antenna 22 through the cable32 and transmit the generated wireless signal from the antenna 22. The antenna 22 may also receive wireless signals, and the antenna 22 passes the received wireless signals to the radio frequency circuitry 12 via the cable32 and passes the received wireless signals to the processor via the radio frequency circuitry 12. In a specific embodiment, the processor is also located on the motherboard.

In an alternative embodiment, the electronic device may include a plurality of cables, each cable may include two ends, a first end coupled to a corresponding connector for the rf circuit, and a second end coupled to a corresponding connector for the antenna. In the process of radio frequency communication of the electronic equipment, the radio frequency circuit can send radio frequency signals to the antenna through the cable, and the antenna can receive and send the radio frequency signals to realize the radio frequency communication of the electronic equipment. For example, as shown in fig. 1, a first end of cable31 is coupled to the connection seat corresponding to the rf circuit 11, and a second end of cable31 is coupled to the connection seat corresponding to the antenna 21; similarly, a first end of cable32 is coupled to a corresponding connection socket of rf circuit 12, and a second end of cable2 is coupled to a corresponding connection socket of antenna 22.

The radio frequency connection line may be a Coaxial Cable (Coaxial Cable), the Coaxial Cable is a wire and signal transmission line, and has two concentric conductors, and the conductor and the shielding layer share the same axis. The coaxial cable has the advantages that: the coaxial cable has good transmission characteristics, can ensure the stable operation of a communication network, has strong anti-electromagnetic interference and anti-bending performance and good flexibility, and is suitable for being applied to folding and rotating electronic products. In addition, the coaxial cable also has good heat resistance and flame resistance, and can work in an environment of-55 ℃ to 250 ℃. Coaxial cables are suitable for transmitting analog and digital signals and are suitable for a wide variety of applications. Coaxial cables are widely used, for example, in electronic devices such as smart phones, notebook computers, digital cameras, video cameras, Global Positioning System (GPS) positioning instruments, wireless routers, liquid crystal televisions, precision medical instruments, and the like to communicatively connect different circuit boards. In one embodiment, the rf connection may transmit analog signals, for example, rf signals.

The resistance of the rf connection line is generally relatively small, and in one embodiment, the resistance of the rf connection line may range from 1 ohm (Ω) to 50 Ω, such as 5 Ω, 7.5 Ω, and the like. The resistance value of the rf connection line may fluctuate when the rf connection line is switched into the circuit, for example, when the resistance value is 7.5 Ω when the rf connection line is not switched into the circuit, the resistance value may fluctuate between 8 Ω and 50 Ω when the rf connection line is switched into the circuit.

With the increasing of radio frequency circuits, antennas and connecting seats in electronic equipment, in the process of connecting the radio frequency circuits and the antennas through the cable, the radio frequency circuits and the antennas connected by the cable may not correspond to each other, that is, the problem of cable connection error may occur, so that the problem of communication quality reduction or communication incapability may be caused. For example, a first end of the cable31 is connected to the corresponding connection seat of the rf circuit 11, and a second end of the cable31 is connected to the corresponding connection seat of the antenna 22, that is, the rf circuit 11 is connected to the antenna 22.

Therefore, the embodiment of the application provides 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, and the radio frequency system can read the preset potential of a detection point and determine the partial voltage of each resistor in the radio frequency system, so as to determine whether each cable is connected incorrectly. The detection point can be a position where a potential change occurs along with a change of a circuit coupling mode caused by connection error or disconnection of each cable in the radio frequency system.

It should be noted that, in practical applications, the radio frequency circuit, the antenna and the radio frequency connection line may have various descriptions, for example, the radio frequency circuit 11 may be a first radio frequency circuit, the radio frequency circuit 12 may be a second radio frequency circuit, the antenna 21 may be a first antenna, the antenna 22 may be a second antenna, the cable31 may be a first radio frequency connection line, and the cable32 may be a second radio frequency connection line. If the electronic device includes 3 rf circuits, 3 antennas and 3 rf connection lines, the rf circuit 13 may be a third rf circuit, the antenna 23 may be a third antenna, and the cable33 may be a third rf connection line. Similarly, when the electronic device includes N rf circuits, N antennas, and N rf connecting lines, any one of the rf circuits may be an ith rf circuit, any one of the antennas may be an ith antenna, and any one of the rf connecting lines may be an ith rf connecting line, where N is an integer greater than or equal to 2, and i is a positive integer less than or equal to N.

Furthermore, the connection socket coupled to each cable, the choke inductance, and the blocking capacitance may be variously described, for example, the first connection socket may be a connection socket 41 described below, the second connection socket may be a connection socket 42 described below, the third connection socket may be a connection socket 43 described below, the fourth connection socket may be a connection socket 44 described below, the fifth connection socket may be a connection socket 45 described below, the sixth connection socket may be a connection socket 46 described below, the first choke inductance may be a choke inductance L1 described below, the second choke inductance may be a choke inductance L2 described below, the third choke inductance may be a choke inductance L3 described below, the fourth choke inductance may be a choke inductance L4 described below, the first blocking capacitance may be a blocking capacitance C1 described below, the second blocking capacitance may be a blocking capacitance C2 described below, and the third blocking capacitance may be a blocking capacitance C3 described below, The fourth blocking capacitor may be a blocking capacitor C4 described below, the first to-ground capacitor may be a capacitor C5 described below, the fifth blocking capacitor may be a capacitor C6 described below, the sixth blocking capacitor may be a capacitor C7 described below, and the second to-ground capacitor may be a capacitor C8 described below.

In the radio frequency systems corresponding to fig. 4 to 16, the fifth choke inductance may be a choke inductance L5 described below, and the sixth choke inductance may be a choke inductance L6 described below. In the radio frequency systems corresponding to fig. 17 to 45, the fifth choke inductance may be a choke inductance L6 described below, and the sixth choke inductance may be a choke inductance L7 described below. In addition, the radio frequency systems corresponding to fig. 17 to 45 may further include a seventh choke inductor, that is, a choke inductor L5 described below.

Similarly, when the electronic device includes 2N connection sockets, a plurality of choke inductors, and 2N dc blocking capacitors, any connection socket may be the ith connection socket, any choke inductor may be the ith choke inductor, and any dc blocking capacitor may 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, various descriptions are possible for the respective voltage dividing elements in the rf system, for example, the first voltage dividing element may be an R1 described below, the second voltage dividing element may be an R2 described below, the third voltage dividing element may be an R5 described below, and the sixth voltage dividing element may be an R6 described below. Further, in the radio frequency system corresponding to fig. 4 to 16, the fourth voltage dividing element may be R4 described below and the fifth voltage dividing element may be R3 described below, and in the radio frequency system corresponding to fig. 17 to 45, the fourth voltage dividing element may be R3 described below and the fifth voltage dividing element may be R4 described below.

Also, the respective voltage dividing elements may constitute a voltage dividing module, for example, the first voltage dividing element and the second voltage dividing element may constitute a voltage dividing module described below. 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 the respective cables.

It should be noted that the radio frequency system may be applied to an electronic device, and the first potential in the radio frequency system may be a high potential, and the second potential and the third potential may both be a low potential. 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, for example, the second potential may be ground potential GND1, the third potential may be ground potential GND2, and in a radio frequency system including 3 cable, the third potential coupled to the fourth voltage dividing element may be ground potential GND 3. In the following embodiments, the first potential is coupled to a power source, and the second potential and the third potential are both ground potentials.

Fig. 2 is a schematic diagram of a system architecture related to a radio frequency system provided in an embodiment of the present application, and 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 a plurality of cans 204.

Wherein, the radio frequency system 201 can be coupled with each cable204, the radio frequency system 201 can also be coupled with the processor 202, and the processor 202 can be coupled with the memory 203.

When detecting whether each cable204 is connected incorrectly, the radio frequency system 201 may collect the potential at the detection point through a preset detection module, and send potential information corresponding to the potential to the processor 202. The processor 202 may receive the potential information, and determine a preset potential matched with the potential information from a plurality of preset potentials stored in advance, so that a connection state corresponding to the preset potential may be stored in the memory 203, so that a maintenance worker may know whether each cable204 is connected incorrectly according to the connection state stored in the memory 203.

The preset potentials stored in advance by the electronic equipment correspond to different connection states of each cable respectively. For example, the electronic device includes cable31 and cable32, and the electronic device may store 2 preset potentials in advance, where one preset potential is correctly connected to cable31 and cable32, and the other preset potential is incorrectly connected to cable31 and cable 32.

Also, referring to fig. 3, the system architecture may further include: at least one of a display screen 205 and a speaker 206, both the display screen 205 and the speaker 206 may be coupled to the processor 202. When the processor 202 determines that each of the cables 204 is connected incorrectly according to the state corresponding to the preset potential, the processor 202 may control the display 205 to remind the user, and the processor 202 may also control the speaker 206 to remind the user of each of the cables 204 that is connected incorrectly.

For example, the display 205 may display "RF connection line connection error, please check! ", and/or the speaker 206 may emit a voice" connection error of the RF connection line, please check! ".

In addition, in practical application, the electronic device may include a plurality of cards 204, and the following description will exemplify how to determine whether a connection error exists in 2 cards 204 (such as the

cards

31 and 32 shown in fig. 4) by using the radio frequency system 201, taking the electronic device including 2 cards 204 as an example.

Fig. 4 is a circuit block diagram of a radio frequency system according to an embodiment of the present application, and referring to fig. 4, the radio frequency system may include: the rf system may further include a plurality of circuit modules, such as a voltage dividing module 401, a detecting module 402, and a power supplying module 403: the circuit comprises a first node (A), a plurality of direct current blocking capacitors (C1, C2, C3 and C4) and a plurality of choke inductors (L1, L2, L3 and L4).

Wherein, the output of power module 403 can be respectively with voltage divider module 401 and detection module 402 coupling through first node A, and cable 31's both ends can be respectively coupled with voltage divider module 401 and power module 403, and cable 32's both ends can be respectively coupled with ground potential GND1 and voltage divider module 401. And a DC blocking capacitor can be arranged between the radio frequency circuit and the corresponding connecting seat, and a DC blocking capacitor can be arranged between the antenna and the corresponding connecting seat, so that the resistance-capacitance coupling is realized, and the direct current of a radio frequency system is prevented from flowing into the radio frequency circuit and the antenna to cause interference on radio frequency signals.

In addition, a choke inductor L1 may be disposed between the voltage dividing module 401 and the cable 31; similarly, a choke inductor L2 may be disposed between the power supply module 403 and the cable31, and a choke inductor L3 may also be disposed between the voltage dividing module 401 and the cable 32. The choke inductor has the effects of direct current passing and alternating current blocking, and can prevent alternating current radio frequency signals in the radio frequency circuit from entering a radio frequency system to influence the potential acquired by the radio frequency system. In addition, a choke inductor L4 may also be disposed between the cable32 and the ground GND1, so as to prevent the rf signal sent by the rf circuit from entering the ground, and avoid interference to the rf signal.

Specifically, for each blocking capacitor, a blocking capacitor C1 is disposed between the radio frequency circuit 11 and the corresponding connection socket 41, and a blocking capacitor C2 is disposed between the antenna 21 and the corresponding connection socket 42; similarly, a dc blocking capacitor C3 is disposed between the rf circuit 12 and the corresponding connection seat 43, and a dc blocking capacitor C4 is disposed between the antenna 22 and the corresponding connection seat 44.

For each choke inductor, a first end of the choke inductor L1 is coupled between the dc blocking capacitor C1 and the connection socket 41 corresponding to the rf circuit 11, and a second end of the choke inductor L1 is coupled to the voltage dividing module 401. Similarly, a first end of the choke inductor L2 is coupled between the dc blocking capacitor C2 and the connection socket 42 corresponding to the antenna 21, and a second end of the choke inductor L2 is coupled to the power supply module 403; a first end of the choke inductor L3 is coupled between the dc blocking capacitor C3 and the connection socket 43 corresponding to the rf circuit 12, and a second end of the choke inductor L3 is coupled to the voltage dividing module 401; a first end of the choke inductor L4 is coupled between the dc blocking capacitor C4 and the connection socket 44 corresponding to the antenna 22, and a second end of the choke inductor L4 is coupled to the ground GND 1.

In addition, the power supply module 403 may include a dc voltage source V0 and a pull-up resistor R0, an output terminal of the dc voltage source V0 is coupled to a first terminal of the pull-up resistor R0, a second terminal of the pull-up resistor R0 is coupled to a second terminal of the choke inductor L2 through a first node a, so that the power supply module is coupled between the dc blocking capacitor C2 and the connection socket 41 corresponding to the antenna 21, and the second terminal of the pull-up resistor R0 may be an output terminal of the power supply module 403.

The dc voltage source V0 may be a voltage source built in the electronic device, for example, the dc voltage source V0 may be a built-in battery of the electronic device, or may be a voltage reduction module connected to the built-in battery of the electronic device, and the embodiment of the present invention is not limited to the dc voltage source V0.

In addition, the power supply module 403 may be a circuit module in an integrated circuit, coupled to the radio frequency system through the first node a, or may be a circuit module on a circuit board of the electronic device, and the power supply module is not limited in this embodiment of the application.

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

For example, if the voltage detection circuit is an ADC, in the process of collecting the potential of the detection point, the ADC may collect an analog voltage signal in the radio frequency system according to a preset sampling frequency, quantize the collected analog voltage signal, and finally represent the quantized analog voltage signal in a digital form by encoding, thereby completing the collection of the potential of the detection point. 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 may collect the potential of the detection point first, compare the collected potential with a preset potential, and determine the magnitude relationship between the potential of the detection point and each preset potential, so that the potential of the detection point may be determined according to a plurality of magnitude relationships.

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

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 GND2, and the second voltage dividing resistor R2 is coupled in series between the cable31 and the cable32 through a choke inductor L1 and a choke inductor L3.

For example, a first terminal of the first voltage-dividing resistor R1 is coupled to the ground GND2, and a second terminal of the first voltage-dividing resistor R1 may be coupled to a first terminal or a second terminal of the second voltage-dividing resistor R2. A first terminal of the second voltage-dividing resistor R2 is coupled to the choke inductor L1, and a second terminal of the second voltage-dividing resistor R2 is coupled to the choke inductor L3.

It should be noted that the pull-up resistor R0, the first voltage-dividing resistor R1, and the second voltage-dividing resistor R2 may all be resistors of kilohm level, for example, the resistances of the pull-up resistor R0, the first voltage-dividing resistor R1, and the second voltage-dividing resistor R2 are all greater than or equal to 1K Ω, so that the voltage division of each cable can be ignored, and the accuracy of detecting whether each cable is connected incorrectly is improved. For example, the dc voltage source V0 may provide 1.8 volts (V), the pull-up resistor R0 may be 20 kilo-ohms (K Ω), the first voltage-dividing resistor R1 may also be 20K Ω, and the second voltage-dividing resistor R2 may be 10K Ω. Of course, specific parameter values of the pull-up resistor R0, the first voltage-dividing resistor R1, and the second voltage-dividing resistor R2 may be set according to the impedance of the electronic device and the built-in dc voltage source V0, and the specific parameter values of the resistors are not limited in this embodiment of the application.

Fig. 5 is a simplified schematic diagram of an rf system according to an embodiment of the present application, in which the rf circuit, the antenna, the dc blocking capacitor, and the choke inductor shown in fig. 4 are omitted. Referring to fig. 5, if both cable31 and cable32 are properly connected, current may flow through pull-up resistor R0, cable31 and 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, and the resistance of the cable32 is much smaller than the resistance of the first voltage-dividing resistor R1, so that the first voltage-dividing resistor R1 is short-circuited by the cable32, and no current flows through the first voltage-dividing resistor R1.

Therefore, the potential at the detection point, that is, the potential at the second end of the pull-up resistor R0, is V1 — V × R2/(R0+ R2), where V1 is the potential at the detection point, V is the potential of the dc voltage source V0, that is, the maximum potential in the rf 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 the cable31 and the 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, and referring to fig. 6, the current also flows through the pull-up resistor R0 first. Then, due to the wrong connection between cable31 and cable32, the first end of the second voltage-dividing resistor R2 is coupled to the ground GND1 through cable32, the first end of the first voltage-dividing resistor R1 is also coupled to the ground 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 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 first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 which are connected in parallel, and then the potential at the detection point is V2 ═ V Rx1/(R0+ Rx1), where V2 is the potential at the detection point, V is the potential at the direct-current voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, Rx1 is the resistance value connected in parallel between the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2, 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 further include a ground capacitor C5, and by providing the ground capacitor C5 between the two radio frequency circuits, the radio frequency signals of the radio frequency system can be connected in series in the two radio frequency circuits, and the ground capacitor C5 guides the radio frequency signals to the ground GND2, so that the radio frequency signals in one radio frequency circuit are prevented from entering the other radio frequency circuit through the radio frequency system, and the isolation between the cable31 and the cable32 can be improved.

The capacitor to ground C5 is connected in parallel with the first voltage-dividing resistor R1, that is, a first end of the capacitor to ground C5 is connected to the ground GND2, and a second end of the capacitor to ground C5 is connected to a second end of the first voltage-dividing resistor R1 and/or a second end of the second voltage-dividing resistor R2.

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 division 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 may be disposed on the sub board, and the voltage division module 401 may be disposed on the main board; alternatively, the power supply module 403 and the detection module 402 may be disposed on the main board, and the voltage division module 401 may be disposed on the sub-board; alternatively, the power supply module 403 may be disposed on the main board, and the voltage dividing module 401 and the detection module 402 may be disposed on the sub-board; or, the voltage dividing module 401, the detecting module 402, and the power supplying module 403 are all disposed on the main board or the sub-board, and the position of each circuit module in the radio frequency system is not limited in this embodiment.

Further, in the rf system shown in fig. 4 and fig. 7, the voltage dividing module 401 is coupled between the dc blocking capacitor C1 and the connection socket 41 corresponding to the rf circuit 11 through the choke inductor L1, and is coupled between the dc blocking capacitor C3 and the connection socket 43 corresponding to the rf circuit 12 through the choke inductor L3.

In other embodiments, when the voltage divider module 401 is coupled between the dc blocking capacitor C1 and the connection socket 41 corresponding to the rf circuit 11 through the choke inductor L1, the voltage divider module 401 may be coupled between the dc blocking capacitor C4 and the connection socket 44 corresponding to the antenna 22 through the choke inductor L3, then the first end of the choke inductor L4 is coupled between the dc blocking capacitor C3 and the connection socket 43 corresponding to the rf circuit 12, and the second end of the choke inductor L4 may be coupled to the ground GND 1.

Alternatively, when the voltage divider 401 is coupled between the dc blocking capacitor C3 and the connection socket 43 corresponding to the rf circuit 12 through the choke inductor L3, the voltage divider 401 may be coupled between the dc blocking capacitor C2 and the connection socket 42 corresponding to the antenna 21 through the choke inductor L1, and then the power supply module 403 may be coupled between the dc blocking capacitor C1 and the connection socket 41 corresponding to the rf circuit 11 through the choke inductor L2.

Of course, the voltage dividing module 401 may also be coupled between two adjacent cables in other manners, and the connection manner of the cables is not limited in this embodiment of the application.

In addition, when the power module 403 and the detection module 402 are respectively located on a main board and a sub-board of the electronic device (e.g., the power module 403 is located on the main board, and the detection module 402 is located on the sub-board, or the power module 403 is located on the sub-board, and the detection module 402 is located on the main board), the power module 403 and the detection module 402 may be coupled by 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 can be flexibly adjusted. Of course, the power supply module 403 and the detection module 402 may also be coupled by a signal line, which is not limited in this embodiment of the application.

In the foregoing embodiment, the electronic device is described by taking an example that the electronic device includes 2 cables, but in practical application, the electronic device may include a plurality of cables, and the following description is given by taking an example that the electronic device includes 3 cables (cable31, cable32, and cable33), referring to fig. 8, where fig. 8 is a circuit framework diagram of another radio frequency system provided in the embodiment of the present application, and the radio frequency system may include: a first voltage division module 801, a second voltage division module 802, a detection module 803 and a power supply module 804.

The power supply module 804 may be coupled to the first voltage dividing module 801 and the detection module 803 through the first node a, two ends of the cable31 may be coupled to the power supply module 804 and the first voltage dividing module 801 respectively, two ends of the cable32 may be coupled to the first voltage dividing module 801 and the second voltage dividing module 802 respectively, and two ends of the cable33 may be coupled to the second voltage dividing module 802 and the ground GND1 respectively.

Further, similar to the rf system shown in fig. 4, the rf system in the embodiment of the present application may also include: a first node (a), a plurality of dc blocking capacitances (C1, C2, C3, C4, C6, and C7), and a plurality of choke inductances (L1, L2, L3, L4, L5, and L6). The dc blocking capacitors C1, C2, C3, C4, and the choke inductors L1, L2, and L3 are the same as the arrangement shown in fig. 4, and are not described herein again. However, the choke inductance L4 shown in fig. 4 is no longer located between cable32 and ground potential, but rather between cable33 and ground potential GND 1.

In addition, other blocking capacitors and choke inductors are added in the embodiment of the present application, a blocking capacitor C6 is arranged between the radio frequency circuit 13 and the corresponding connection seat 45, and a blocking capacitor C7 is arranged between the antenna 23 and the corresponding connection seat 46; a choke inductance L5 is provided between the second voltage division block 802 and the cable32, and a choke inductance L6 is provided between the second voltage division block 802 and the cable 3.

A first end of the choke inductor L5 is coupled between the dc blocking capacitor C4 and the connection socket 44 corresponding to the antenna 22, and a second end of the choke inductor L5 is coupled to the second voltage division module 802; a first end of the choke inductor L6 is coupled between the dc blocking capacitor C7 and the connection socket 46 corresponding to the antenna 23, and a second end of the choke inductor L6 is coupled to the second voltage division module 802; a first terminal of the choke inductor L4 is coupled between the dc blocking capacitor C6 and the connection socket 45 corresponding to the rf circuit 13, and a second terminal of the choke inductor L4 is coupled to the ground GND 1.

In addition, the first voltage dividing module 801, the detecting module 803, and the power supplying module 804 in the embodiment of the present application are similar to the voltage dividing module 401, the detecting module 402, and the power supplying module 403 shown in fig. 4, and are not described herein again.

The second voltage dividing module 802 in the embodiment of the present application may include a third voltage dividing resistor R3 and a fourth voltage dividing resistor R4 in the second voltage dividing module 802, similar to the first voltage dividing module 801, see fig. 8. A first terminal of the fourth voltage-dividing resistor R4 is coupled to the ground GND3, and a second terminal of the fourth voltage-dividing resistor R4 is coupled to a second terminal of the third voltage-dividing resistor R3. The third voltage dividing resistor R3 is coupled in series between the choke inductance L5 and the choke inductance L6. For example, a first terminal of the third voltage dividing resistor R3 may be coupled with the choke inductance L5, and a second terminal of the third voltage dividing resistor R3 may be coupled with the choke inductance L6, or a first terminal of the third voltage dividing resistor R3 may be coupled with the choke inductance L6, and a second terminal of the third voltage dividing resistor R3 may be coupled with the choke inductance L5.

It should be noted that, similar to the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2, both the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 may also be resistors in kilo-ohm level, and specific parameter values of the third voltage-dividing resistor 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 is 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 division module 802 are added. However, in an embodiment, the dc voltage source V0 may be coupled between the dc blocking capacitor C6 and the connection socket 45 corresponding to the rf circuit 13 through the choke inductor L2, and the ground GND1 is coupled between the dc blocking capacitor C2 and the connection socket 42 corresponding to the antenna 21 or between the dc blocking capacitor C1 and the connection socket 41 corresponding to the rf circuit 11 through the choke inductor L4.

Of course, the dc voltage source V0 may also be coupled between the dc blocking capacitor C7 and the connection socket 46 corresponding to the antenna 23 through the choke inductor L2, and the ground potential GND1 is coupled between the dc blocking capacitor C2 and the connection socket 42 corresponding to the antenna 21 or between the dc blocking capacitor C1 and the connection socket 41 corresponding to the rf circuit 11 through the choke inductor L4.

That is, a plurality of cables of the electronic device may be coupled in series between the dc voltage source V0 and the ground GND1, and the embodiments of the present application do not limit the number of cables in the electronic device and the positions of the dc voltage source V0 and the ground GND1 in the radio frequency system.

Fig. 9 is a simplified schematic diagram of another rf system provided in the embodiments of the present application, in which the rf circuit, the antenna, the dc blocking capacitor, and the choke inductor shown in fig. 8 are omitted. Referring to fig. 9, if cable31, cable32 and cable33 are all connected correctly, current can flow through pull-up resistor R0, cable31, second voltage-dividing resistor R2, cable32, third voltage-dividing resistor R3 and cable33, and thus reach ground potential GND1 to form a circuit loop.

Furthermore, a first end of the first voltage-dividing resistor R1 is coupled to the ground GND2, a second end of the first voltage-dividing resistor R1 is coupled to a second end of the second voltage-dividing resistor R2, and the third voltage-dividing resistor R3 is coupled to the ground GND1 through a cable33, the first voltage-dividing resistor R1 is connected in parallel to the third voltage-dividing resistor R3, and a 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 GND 2.

In addition, the first end of the fourth voltage-dividing resistor R4 is coupled to the ground GND3, the second end of the fourth voltage-dividing resistor R4 is 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 the resistance of the fourth voltage-dividing resistor R4, so that 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 at the detection point, that is, the potential at the second end of the pull-up resistor is V3 ═ V (R2+ Rx2)/(R0+ R2+ Rx2), where V3 is the potential at the detection point, 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 resistance value of the first voltage-dividing resistor R1 and the third voltage-dividing resistor R3 connected in parallel, 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 the cable32 and the 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 the embodiment of the present application, referring to fig. 10, and the current also flows through the pull-up resistor R0, the cable31 and the second voltage-dividing resistor R2 first.

Because cable32 and cable33 are connected incorrectly, third voltage-dividing resistor R3 is coupled with ground potential GND1 through connecting seat 45 corresponding to radio frequency circuit 13, fourth voltage-dividing resistor R4 is also coupled with ground potential GND3, third voltage-dividing resistor R3 and fourth voltage-dividing resistor R4 are connected in parallel, and after current flows through second voltage-dividing resistor R2, current flows through third voltage-dividing resistor R3 and fourth voltage-dividing resistor R4 through cable32, and finally reaches ground potential GND1 through cable33 to form a loop.

Furthermore, the first terminal of the first voltage-dividing resistor R1 is also coupled to the ground GND2, i.e. the first voltage-dividing resistor R1 is connected in parallel to the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4. Therefore, at this time, the potential of the detection point 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, R0 is a resistance value corresponding to the pull-up resistor R0, R2 is a resistance value corresponding to the second voltage-dividing resistor R2, Rx3 is a resistance value in which the first voltage-dividing resistor R1, the third voltage-dividing resistor R3, and the fourth voltage-dividing resistor R4 are connected in parallel, Rx3 ═ R1 ═ R3 ═ R4/(R1 × R3+ R1 × R4+ R3 × R4), R1 is a resistance value corresponding to the first voltage-dividing resistor R1, R3 is a resistance value corresponding to the third voltage-dividing resistor R3, and R4 is a resistance value corresponding to the fourth voltage-dividing resistor R4.

Referring to fig. 11, the cable and the cable are connected incorrectly, the fourth voltage dividing resistor R is short-circuited by the cable, the second voltage dividing resistor R and the third voltage dividing resistor R are connected in series, the first voltage dividing resistor R is connected in parallel with the second voltage dividing resistor R and the third voltage dividing resistor R connected in series, and then the potential of the detection point is V × Rx/(R + Rx), where V is the potential of the detection point, V is the potential of the dc voltage source V, R is the resistance value corresponding to the pull-up resistor R, Rx is the resistance value of the first voltage dividing resistor R connected in parallel with the second voltage dividing resistor R and the third voltage dividing resistor R connected in series, Rx is R × R (R + R)/(R + R), R is the resistance value corresponding to the first voltage dividing resistor R, R is the resistance value corresponding to the second voltage dividing resistor R, and R is the resistance value corresponding to the third voltage dividing resistor R.

It should be noted that, when the electronic device includes 3 cables, in a coupling process of each cable, a situation that all of the 3 cables are connected incorrectly may occur, see fig. 12 to 14, and fig. 12 to 14 are simplified schematic diagrams of still another radio frequency system provided in the embodiment of the present application.

Referring to fig. 12, the cable31, the cable32 and the cable33 are all connected incorrectly, that is, the rf circuit 11 is coupled to the antenna 23, the rf circuit 12 is coupled to the antenna 21, and the rf circuit 13 is coupled to 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 third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 which are connected in parallel, and the first voltage-dividing resistor R1 is connected in parallel with a branch circuit in which the second voltage-dividing resistor R2 is located. 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, Rx5 is the equivalent resistor in parallel connection with the branch circuit where the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 are located, Rx5 × R1 × Ry1/(R1+ Ry1), R1 is the resistance value corresponding to the first voltage-dividing resistor R1, Ry1 is the resistance value in series connection with the second voltage-dividing resistor R2 and the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 in parallel connection, Ry1 × R2+ R3 × R4/(R3+ R4), R2 is the resistance value corresponding to the third voltage-dividing resistor R2, R3 is the resistance value corresponding to the third voltage-dividing resistor R3, and R3 is 3.

Referring to fig. 13, the cable31, the cable32 and the cable33 are also connected incorrectly, that is, the rf circuit 11 is coupled to the antenna 22, the rf circuit 12 is coupled to the antenna 23, and the rf circuit 13 is coupled to the antenna 21. A choke inductor L4 coupled to the ground GND1 is provided between the rf circuit 13 and the corresponding connection socket 45, and the detection module 803 coupled to the antenna 21 is coupled to the ground GND1 through the choke inductor L4, where the potential of the detection point is V6 equal to 0.

Referring to fig. 14, cable31 and cable33 are incorrectly connected, and similarly to the rf system shown in fig. 13, the rf circuit 11 is coupled to the antenna 23, the rf circuit 13 is coupled to the antenna 21, and the detection module 803 coupled to the antenna 21 is coupled to the ground GND1 through the choke inductor L4, where the potential of the detection point is V7 equal to 0.

Further, referring to fig. 15, the first voltage dividing module 801 may further include a capacitance to ground C5, and the capacitance to ground C5 is connected in parallel with the first voltage dividing resistor R1, so as to improve the isolation between the cable31 and the cable 32. Similarly, the second voltage division module 802 may further include a capacitance to ground C8, and the capacitance to ground C8 is connected in parallel with the fourth voltage division resistor R4 to improve the isolation between the cable32 and the cable 33.

The above-mentioned capacitors to ground C5 and C8 are similar to the capacitors to ground C5 shown in fig. 7, and are not described in detail herein.

It should be noted that, in the above embodiments, the power supply module 804 and the second voltage dividing module 802 of the radio frequency system are located on a sub-board of the electronic device, and the detection module 803 and the first voltage dividing module 801 of the radio frequency system are located on a main board of the electronic device. However, in practical applications, 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 positions of the circuit modules may be adjusted with reference to the embodiments corresponding to fig. 4 to 7, and the positions of the circuit modules are not limited in the embodiments of the present application.

Moreover, the first voltage dividing module 801 and the second voltage dividing module 802 may be coupled between two adjacent cards in different manners, and refer to different coupling manners corresponding to the voltage dividing module 401 in fig. 4, which is not described herein again.

In addition, the radio frequency system provided by the embodiment of the application can be combined with the GPIO to determine whether the cable of the electronic device is disconnected or not through the GPIO, and then determine whether the cable of the electronic device has a connection error or not according to the radio frequency system provided by the embodiment of the application.

That is, on the basis of the electronic device with the GPIO, the radio frequency system provided in the embodiments of the present application may be added to the electronic device, so as to obtain another radio frequency system, as shown in fig. 4, fig. 7, fig. 8, and fig. 15. Taking the addition of the rf system shown in fig. 7 as an example, referring to fig. 16, the rf system may include: a GPIO detection module 1601, a GPIO power supply module 1602, a voltage division 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 capacitances (C1, C2, C3, and C4), a capacitance to ground (C5), and a plurality of choke inductances (L1, L2, L3, and L4).

The coupling modes of the voltage dividing module 1603, the detection module 1604, the power supply module 1605, the plurality of blocking capacitors (C1, C2, C3, and C4), the plurality of choke inductors (L1, L2, L3, and L4), and the ground capacitor C5 are similar to the coupling modes of the voltage dividing module 401, the detection module 402, the power supply module 403, the plurality of blocking capacitors (C1, C2, C3, and C4), the plurality of choke inductors (L1, L2, L3, and L4), and the ground capacitor C5 shown in fig. 7, and are not described herein again.

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

The GPIO power supply module 1602 and the power supply module 1605 of the rf system in the above embodiments are located on a sub-board of the electronic device, and the GPIO detection module 1601, the detection module 1604 and the voltage dividing module 1603 of the rf system are located on a main board of the electronic device. However, in practical applications, 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 positions of the circuit modules may be adjusted with reference to the embodiments corresponding to fig. 4 to 7, and the positions of the circuit modules are not limited in the embodiments of the present application.

Moreover, the voltage dividing module 1603 may be coupled between two adjacent cans in different manners, which may refer to different coupling manners corresponding to the voltage dividing module 401 in fig. 4, and will not be described herein again.

In addition, if the detection module 1604 and the GPIO detection module 1601 of the radio frequency system are both located on a motherboard or a sub-board of the electronic device, the detection module 1604 may implement routing of the detection module 1604 by using a routing multiplexing method on the basis of the routing of the GPIO detection module 1601, so that the GPIO detection module 1601 may determine whether each cable is disconnected or not and also determine whether each cable is correctly connected or not through the detection module 1604.

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

To sum up, the radio frequency system that this application embodiment provided, be provided with at least one partial pressure module with the power module coupling among the radio frequency system, and every partial pressure module series coupling, wherein every partial pressure module sets up between two adjacent cable, if two arbitrary cable in a plurality of cables connect the mistake, then the flow direction of electric current changes among the radio frequency system, the partial pressure of divider resistance also can change in each partial pressure module, then the detection module who is connected with the power module can detect the potential of change, thereby can confirm each cable of connection mistake according to the potential of change, need not to set up the GPIO that is directly proportional with cable quantity, required hardware when can reducing each cable of detection and whether disconnect, and reduce and detect each cable and connect the required cost of disconnection.

Moreover, a cable can be coupled in series between the power supply module and the voltage dividing module, between the voltage dividing module and the ground potential, and between two adjacent voltage dividing modules, and a blocking capacitor and a choke inductor are arranged between the radio frequency system and the radio frequency circuit and between the radio frequency system and the antenna, so that the radio frequency signal in the radio frequency circuit can be prevented from entering the radio frequency system, the current in the radio frequency system can be prevented from entering the radio frequency circuit, the isolation between the radio frequency system and the radio frequency circuit can be improved, and the accuracy of the radio frequency system can be improved.

Moreover, the ground capacitor is arranged in the voltage division module, so that the ground capacitor is positioned between the two radio frequency circuits, and radio frequency signals of the radio frequency system connected in series in the radio frequency circuits can be guided to the ground potential through the ground capacitor, so that the radio frequency signals in one radio frequency circuit can be prevented from entering the other radio frequency circuit through the radio frequency system, and the isolation between the two radio frequency circuits can be improved.

In addition, the radio frequency system provided by the embodiment of the application can be added on the basis of the electronic device comprising the GPIO by adopting a routing multiplexing mode in combination with the original GPIO, so that routing is reduced, and hardware resources are saved. Moreover, on the basis that the original GPIO has the function of determining whether each cable is disconnected or not, whether each cable of the electronic equipment is connected wrongly or not can be determined by combining the radio frequency system, so that the functions of the radio frequency system can be enriched, and the diversity of the functions realized by the radio frequency system is improved.

In the above embodiment, whether each cable is disconnected or not is determined by GPIO, and 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 may be adjusted, so that whether each cable in the electronic device is disconnected or not may be determined by the adjusted radio frequency system.

Fig. 17 is a circuit block diagram of another radio frequency system according to an embodiment of the present application, and referring to fig. 17, the radio frequency system may include: the rf system may further include a plurality of circuit blocks including a voltage divider block 1701, a detection block 1702, and a power supply block 1703: a first node (a), a plurality of dc blocking capacitances (C1, C2, C3, and C4), and a plurality of choke inductances (L1, L2, L3, and L4).

Wherein, power module 1703's output can be through first node A respectively with detection module 1702 and voltage divider module 1701 coupling, power module 1703 can supply power for voltage divider module 1701, voltage divider module 1701 then can form different partial pressures according to the different connected mode of each cable for detection module 1702 can detect the electric potential of the check point of presetting, thereby obtain the different electric potentials corresponding with the different coupled mode of each cable, and then can confirm whether each cable disconnection according to the electric potential of difference.

Also, voltage divider module 1701 may be coupled across cable 31. When cable31 is normally connected, voltage divider module 1701 may be shorted by cable 31; when the cable31 is disconnected, the power supply module 1703 may be coupled to ground potential through the voltage divider module 1701, thereby forming a loop.

In addition, unlike cable31, the two ends of cable32 can be coupled with ground GND1 and cable31, and no voltage dividing module is arranged at the two ends of cable 32. When the cable32 is normally connected, the radio frequency system can form a loop through the cable32 connected with the ground potential GND 1; and when the cable32 is disconnected, the radio frequency system can be connected with the ground potential GND2 through the voltage dividing module 1701, so that a loop is formed.

It should be noted that in the embodiment of the present application, the arrangement of each dc blocking capacitor (C1, C2, C3, and C4) and each choke inductor (L1, L2, L3, and L4) may refer to the arrangement shown in fig. 4, and details thereof are not repeated herein. 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 are not further described herein.

In contrast to the voltage divider module 401 in fig. 4, the voltage divider module 1701 may further include: a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2, a first end of the first voltage-dividing resistor R1 is coupled to the ground GND2, and a second end of the first voltage-dividing resistor R1 is coupled to a second end of the second voltage-dividing resistor R2. However, the first terminal of the second voltage-dividing resistor R2 is coupled to the output terminal of the power module 1703, that is, coupled to the first node a of the radio frequency system, and the second terminal of the first voltage-dividing resistor R1 and the second terminal of the second voltage-dividing 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 socket 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 connection socket 42 corresponding to the antenna 21, and the second end of the second voltage-dividing resistor R2 is coupled between the C1 and the connection socket 41 corresponding to the rf circuit 11 through the choke inductor L1, the second end of the second voltage-dividing resistor R2 is also coupled with the cable31, and the second voltage-dividing resistor R2 is connected in parallel with the cable 31.

In addition, the parameter values of the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 can refer to the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 shown in fig. 4, and are not described again here.

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

Therefore, the potential at the detection point at this time is V8 ═ 0, where V8 is the potential at the detection point set in advance.

However, if cable31 is disconnected and cable32 is normally connected, a simplified circuit as shown in fig. 19 can be formed, fig. 19 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, referring to fig. 19, cable31 is disconnected, and a current flows from pull-up resistor R0 through second voltage-dividing resistor R2. However, cable32 is not open, and first divider resistor R1 is short-circuited by cable 32. After flowing through the second voltage-dividing resistor R2, the current can reach the ground GND1 through the cable 32.

Therefore, at this time, the potential at the detection point is V9 ═ V × R2/(R0+ R2), where V9 is the potential at the detection point set in advance, V is the potential of the dc voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R2 is the resistance value corresponding to the second voltage-dividing resistor R2.

Similarly, if the cable31 is normally connected and the cable32 is disconnected, a simplified circuit as shown in fig. 20 may be formed, where fig. 20 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, referring to fig. 20, the cable31 is normally connected, and the second divider resistor R2 is short-circuited by the cable 31. However, the cable32 is disconnected, and the current flows through the pull-up resistor R0 and the cable31, and then only flows through the first voltage-dividing resistor R1 to the ground GND 2.

Therefore, at this time, the potential at the detection point is V10 ═ V × R1/(R0+ R1), where V10 is the potential at the detection point set in advance, V is the potential of the dc voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R1 is the resistance value corresponding to the first voltage dividing resistor R1.

In addition, if both of the cable31 and the 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 in the embodiment of the present application, and referring to fig. 21, after both of the cable31 and the cable32 are disconnected, after the current flows through the pull-up resistor R0, the current can only flow through the second voltage-dividing resistor R2 and the first voltage-dividing resistor R1 to reach the ground potential GND 2.

Therefore, at this time, the potential at the detection point is V11 ═ V × (R1+ R2)/(R0+ R1+ R2), where V11 is the potential at the detection point set in advance, V is the potential of the dc voltage source V0, 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 20K Ω, the resistance value of the first voltage-dividing resistor R1 is 20K Ω, the resistance value of the second voltage-dividing resistor R2 is 10K Ω, the capacitance value corresponding to each dc blocking capacitor is C1 ═ C2 ═ C3 ═ C4 ═ 33pF (picofarad), the capacitance value of the ground capacitor C5 is 20pF, the inductance value corresponding to each choke inductor is L1 ═ L2 ═ L3 ═ L4 ═ 68nH (nanohenry), the calculation can be performed according to the above formula, and 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 capacitance to ground C5, and the capacitance to ground C5 is connected in parallel with the first voltage dividing resistor R1, so as to improve the isolation between the cable31 and the cable 32. The above-mentioned capacitor-to-ground C5 is similar to the capacitor-to-ground C5 shown in fig. 7, and will not be described herein.

It should be noted that, in the above embodiment, the power supply module 1703 of the rf system is located on a sub-board of the electronic device, and the detection module 1702 and the voltage dividing module 1701 of the rf system are located on a main board of the electronic device. However, in practical applications, 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 positions of the circuit modules may be adjusted with reference to the embodiments corresponding to fig. 4 to 7, and the positions of the circuit modules are not limited in the embodiments of the present application.

Further, the voltage dividing module 1701 may be coupled between two adjacent cables in different manners, which may refer to different coupling manners corresponding to the voltage dividing module 401 in fig. 4, and will not be described herein again.

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

In the above embodiments shown in fig. 17 to fig. 22, the electronic device is described as including 2 cable, but in practical application, the electronic device may include a plurality of cables, and the following description is described as including 3 cables (cable31, cable32, and cable33) in the following, referring to fig. 23, where fig. 23 is a circuit frame diagram of another radio frequency system provided in the embodiments of the present application, and the radio frequency system may include: a first voltage division module 2301, a second voltage division module 2302, a detection module 2303 and a power supply module 2304.

The output end of the power module 2304 may be coupled to the detection module 2303 through the first node a, the power module 2304 may also be coupled to the first voltage division module 2301 through the cable31, and the first voltage division module 2301 may be coupled to the second voltage division module 2302 through the cable 32. That is, both ends of cable31 may be coupled with first voltage division module 2301. When cable31 is disconnected, a circuit loop may be formed by first voltage divider module 2301. Similarly, a second voltage dividing module 2302 can be coupled to both ends of the cable32, and when the cable32 is disconnected, a circuit loop can be formed through the second voltage dividing module 2302. In addition, two ends of the cable33 can be respectively coupled with the cable32 and the ground potential GND 1.

Further, similar to the rf system shown in fig. 17, the rf system in the embodiment of the present application may also include: a first node (a), a plurality of dc blocking capacitances (C1, C2, C3, C4, C6, and C7), and a plurality of choke inductances (L1, L2, L3, L4, L5, L6, and L7). The arrangement of the dc blocking capacitors C1, C2, C3, C4, etc., and the choke inductors L1, L2, L3, etc., are the same as the arrangement shown in fig. 17, and are not described herein again. However, the choke inductance L4 shown in fig. 17 is no longer located between the cable32 and the ground potential GND1, but is located between the cable33 and the ground potential GND1 shown in fig. 23.

In addition, in the embodiment of the present application, other blocking capacitors (C6 and C7) and choke inductors (L5, L6 and L7) are further added, a blocking capacitor C6 is disposed between the rf circuit 13 and the corresponding connection socket 45, and a blocking capacitor C7 is disposed between the antenna 3 and the corresponding connection socket 46; a choke inductance L5 and a choke inductance L6 are arranged between the second voltage division module 2302 and the cable32, the choke inductance L5 and the choke inductance L6 are respectively coupled to two ends of the cable32, and a choke inductance L7 is arranged between the second voltage division module 2302 and the cable 3.

Specifically, a first end of the choke inductor L4 is connected between the dc blocking capacitor C6 and the connection socket 45 corresponding to the rf circuit 13, and a second end of the choke inductor L4 is coupled to the ground GND 1; a first end of the choke inductor L5 is coupled between the dc blocking capacitor C3 and the connection socket 43 corresponding to the rf circuit 12, and a second end of the choke inductor L5 is coupled to the second voltage division module 2302; a first end of the choke inductor L6 is coupled between the dc blocking capacitor C4 and the connection socket 44 corresponding to the antenna 22, and a second end of the choke inductor L6 is coupled to the second voltage division module 2302; a first terminal of the choke inductor L7 is coupled between the dc blocking capacitor C7 and the connection socket 46 corresponding to the antenna 23, and a second terminal of the choke inductor L7 is coupled to the second voltage division 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 are not described herein again.

The second voltage division module 2302 in the present embodiment is similar to the first voltage division module 2301, and may include a third voltage division resistor R3 and a fourth voltage division resistor R4 therein, see fig. 23. A first terminal of the third voltage dividing resistor R3 is coupled to the ground GND3, a second terminal of the third voltage dividing resistor R3 is coupled to a second terminal of the fourth voltage dividing resistor R4, and a first terminal of the fourth voltage dividing resistor R4 is coupled to the choke inductor L5. Also, the second terminal of the third voltage dividing resistor R3 and the second terminal of the fourth voltage dividing resistor R4 may be both 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 this embodiment, and the parameter value of the fourth voltage dividing resistor R4 may refer to the parameter value of the second voltage dividing resistor R2 in the first voltage dividing module 2301 in this embodiment, which is not described herein again.

Fig. 24 is a simplified schematic diagram of another rf system provided in the embodiment of the present application, in which the rf circuit, the antenna, the dc blocking capacitor, and the choke inductor shown in fig. 23 are omitted. Referring to fig. 24, if none of cable31, cable32 and cable33 is disconnected, the second voltage-dividing resistor R2, the fourth voltage-dividing resistor R4, the third voltage-dividing resistor R3 and the first voltage-dividing resistor R1 in the radio frequency system are shorted by cable31, cable32 and cable33, respectively, and cable32 and cable33, respectively, and a current flows through the pull-up resistor R0, cable31, cable32 and cable33, thereby reaching the ground potential GND1 to form a loop.

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

However, if the cable31 is disconnected and the cable32 and the cable33 are normally connected, a simplified circuit as shown in fig. 25 can be formed, fig. 25 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, referring to fig. 25, the cable31 is disconnected, and a current flows through the second voltage-dividing resistor R2 through the pull-up resistor R0. However, the cable32 and the cable33 are not disconnected, and the first voltage-dividing resistor R1, the third voltage-dividing resistor R3, and the fourth voltage-dividing resistor R4 are short-circuited. After flowing through the second voltage-dividing resistor R2, the current can reach the ground GND1 through the cable32 and the cable 33.

Therefore, at this time, the potential at the detection point is V13 ═ V × R2/(R0+ R2), where V13 is the potential at the detection point, V is the potential of the dc voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R2 is the resistance value corresponding to the second voltage-dividing resistor R2.

Similarly, if the cable31 and the cable33 are normally connected, and the cable32 is disconnected, a simplified circuit as shown in fig. 26 may be formed, fig. 26 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, referring to fig. 26, the cable31 and the cable33 are normally connected, the second voltage-dividing resistor R2 is shorted by the cable31, and the third voltage-dividing resistor R3 is shorted by the cable 33. Cable32 is disconnected, and first divider resistor R1 and fourth divider resistor R4 are connected in parallel.

Therefore, at this time, the potential at the detection point is V14 ═ V × Rx6/(R0+ Rx6), where V14 is the potential at 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 resistor in which the first voltage dividing resistor R1 and the fourth voltage dividing resistor R4 are 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 resistance value corresponding to the fourth voltage dividing resistor R4.

Similarly, if the cable31 and the cable32 are normally connected, and the cable33 is disconnected, a simplified circuit as shown in fig. 27 may be formed, fig. 27 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, and referring to fig. 27, the cable31 and the cable32 are normally connected, the second voltage-dividing resistor R2 is shorted by the cable31, and the fourth voltage-dividing resistor R4 is shorted by the cable 32. Cable33 is disconnected, and first divider resistor R1 and third divider resistor R3 are connected in parallel.

Therefore, at this time, the potential at the detection point is V15 ═ V0 × Rx7/(R0+ Rx7), where V15 is the potential at 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 resistor in which the first voltage-dividing resistor R1 and the third voltage-dividing resistor R3 are 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 resistance value corresponding to the third voltage-dividing resistor R3.

And when the connection of only 3 cables of the electronic equipment is not disconnected and any cable is disconnected, the preset detection point detects the obtained potential. However, in practical applications, the electronic device may be disconnected from any 2 of the 3 cables, or may be disconnected from all the 3 cables. Referring to fig. 28 to 31, simplified schematic diagrams of the corresponding radio frequency system when 2 or 3 cables are disconnected are shown respectively.

Fig. 28 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, as shown in fig. 28, a cable31 and a cable32 of an electronic device are disconnected, a cable33 is normally connected, a third voltage-dividing resistor R3 is short-circuited by a cable33, a first voltage-dividing resistor R1 is connected in parallel with a fourth voltage-dividing resistor R4, and a second voltage-dividing resistor R2 is connected in series with the first voltage-dividing resistor R1 and the fourth voltage-dividing resistor R4 which are connected in parallel.

Therefore, at this time, the potential at the detection point is V16 ═ V × (R2+ Rx8)/(R0+ R2+ Rx8), where V16 is the potential at 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, Rx8 is the equivalent resistor in which the first voltage-dividing resistor R1 and the fourth voltage-dividing resistor R4 are 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 in the embodiment of the present application, as shown in fig. 29, cable32 and cable33 of an electronic device are disconnected, cable31 is normally connected, second voltage-dividing resistor R2 is short-circuited by cable31, third voltage-dividing resistor R3 and fourth voltage-dividing resistor R4 are connected in series, and first voltage-dividing resistor R1 is connected in parallel with third voltage-dividing resistor R3 and fourth voltage-dividing resistor R4 which are connected in series.

Therefore, at this time, the potential at the detection point is V17 — V × Rx9/(R0+ Rx9), where V17 is the potential at 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 resistor formed by connecting the first voltage-dividing resistor R1 in parallel with the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 connected in series, 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 in the embodiment of the present application, as shown in fig. 30, a cable31 and a cable33 of an electronic device are disconnected, a cable32 is normally connected, a fourth voltage-dividing resistor R4 is short-circuited by a cable32, a first voltage-dividing resistor R1 and a third voltage-dividing resistor R3 are connected in parallel, and a second voltage-dividing resistor R2 is connected in series with the first voltage-dividing resistor R1 and the third voltage-dividing resistor R3 that are connected in parallel.

Therefore, at this time, the potential at the detection point is V18 ═ V × (R2+ Rx10)/(R0+ R2+ Rx10), where V18 is the potential at 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, Rx10 is the equivalent resistor formed by connecting 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 in the embodiment of the present application, and as shown in fig. 31, cable31, cable32, and cable33 of the electronic device are all disconnected, and the first voltage dividing resistor R1 is connected in parallel with the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 connected in series.

Therefore, at this time, the potential at the detection point is V19 ═ V × (R2+ Rx11)/(R0+ R2+ Rx11), where V19 is the potential at 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, Rx11 is the equivalent resistance of the first voltage-dividing resistor R1 in parallel with the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R4 connected in series, 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 resistance value corresponding to the fourth voltage-dividing resistor R4.

Further, referring to fig. 32, the first voltage dividing module 2301 may further include a capacitance to ground C5, and the capacitance to ground C5 is connected in parallel with the first voltage dividing resistor R1 to improve the isolation between the cable31 and the cable 32. Similarly, the second voltage division module 2302 may further include a capacitor to ground C8, and the capacitor to ground C8 is connected in parallel with the third voltage dividing resistor R3 to improve the isolation between the cable32 and the cable 33.

The above-mentioned capacitors to ground C5 and C8 are similar to the capacitor to ground C5 shown in fig. 22, and are not described in detail here.

It should be noted that, in the above embodiments, the power supply module 2304 and the second voltage division module 2302 of the rf system are located on a sub-board of the electronic device, and the detection module 2303 and the first voltage division module 2301 of the rf system are located on a main board of the electronic device. However, in practical applications, 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 positions of the circuit modules may be adjusted with reference to the embodiments corresponding to fig. 4 to 7, and the positions of the circuit modules are not limited in the embodiments of the present application.

Moreover, the first voltage dividing module 2301 and the second voltage dividing module 2302 can be coupled between two adjacent cans in different manners, and refer to different coupling manners corresponding to the voltage dividing module 601 in fig. 6, which is not described herein again.

In addition, on the basis of the radio frequency system shown in fig. 23, the radio frequency system can be further optimized to reduce components in the radio frequency system, reduce the complexity of the radio frequency system, and reduce the area occupied by the radio frequency system on the main board and the sub-board of the electronic device. For example, the first voltage dividing module 2301 in the radio frequency system may be optimized, and the first voltage dividing resistor R1 in the first voltage dividing module 2301 is removed, resulting in the radio frequency system shown in fig. 33.

Fig. 33 is a circuit block diagram of another radio frequency system according to an embodiment of the present application, and referring to fig. 33, the first voltage-dividing module 2301 includes only the second voltage-dividing resistor R2, a first end of the second voltage-dividing resistor R2 is coupled to a second end of the pull-up resistor R0 in the power supply module 2304, and a second end of the second voltage-dividing resistor R2 is coupled between the choke inductor L1 and the choke inductor L3.

The power module 2304, the detection module 2303 and the second voltage division module 2302 of the rf system are similar to the rf system shown in fig. 23, and will not be described herein again.

Fig. 34 is a simplified schematic diagram of another rf system provided in the embodiment of the present application, in which the rf circuit, the antenna, the dc blocking capacitor, and the choke inductor shown in fig. 33 are omitted. Referring to fig. 34, if none of cable31, cable32, and cable33 is disconnected, the second voltage-dividing resistor R2, the fourth voltage-dividing resistor R4, and the third voltage-dividing resistor R3 in the rf system are shorted by cable31, cable32, and cable33, and the current flows through the pull-up resistor R0, cable31, cable32, and cable33, and reaches the ground GND1 to form a loop.

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

However, if the cable31 is disconnected and the cable32 and the cable33 are normally connected, a simplified circuit as shown in fig. 35 may be formed, where fig. 35 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, and referring to fig. 35, the cable31 is disconnected, and a current flows from the pull-up resistor R0 through the second voltage-dividing resistor R2. However, since cable32 and cable33 are not disconnected, third voltage-dividing resistor R3 is short-circuited by cable33, and fourth voltage-dividing resistor R4 is short-circuited by cable 32. After flowing through the second voltage-dividing resistor R2, the current reaches the ground potential GND1 through the cable32 and the cable 33.

Therefore, at this time, the potential at the detection point is V21 ═ V × R2/(R0+ R2), where V21 is the potential at the detection point, V is the potential of the dc voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R2 is the resistance value corresponding to the second voltage-dividing resistor R2.

Similarly, if the cable31 and the cable33 are normally connected, and the cable32 is disconnected, a simplified circuit as shown in fig. 36 may be formed, fig. 36 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, referring to fig. 36, the cable31 and the cable33 are normally connected, the second voltage-dividing resistor R2 is shorted by the cable31, and the third voltage-dividing resistor R3 is shorted by the cable 33. Cable32 is disconnected, and only the fourth voltage-dividing resistor R4 is connected.

Therefore, at this time, the potential at the detection point is V22 ═ V × R4/(R0+ R4), where V22 is the potential at the detection point, V is the potential of the dc voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R4 is the resistance value corresponding to the fourth voltage dividing resistor R4.

Similarly, if the cable31 and the cable32 are normally connected, and the cable33 is disconnected, a simplified circuit as shown in fig. 37 may be formed, fig. 37 is a simplified schematic diagram of another radio frequency system provided in the embodiment of the present application, referring to fig. 37, the cable31 and the cable32 are normally connected, the second voltage-dividing resistor R2 is shorted by the cable31, and the fourth voltage-dividing resistor R4 is shorted by the cable 32. Cable33 is disconnected, and only the third voltage dividing resistor R3 is connected to the radio frequency system.

Therefore, at this time, the potential at the detection point is V23 ═ V × R3/(R0+ R3), where V23 is the potential at the detection point, V is the potential of the dc voltage source V0, R0 is the resistance value corresponding to the pull-up resistor R0, and R3 is the resistance value corresponding to the third voltage dividing resistor R3.

Corresponding to fig. 28 to 31, fig. 38 to 41 show simplified schematic diagrams of the radio frequency system shown in fig. 33 when 2 or 3 cables are disconnected, respectively.

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

Therefore, at this time, the potential at the detection point is V24 ═ V × (R2+ R4)/(R0+ R2+ R4), where V24 is the potential at the detection point, V is the potential of the dc voltage source V0, R0 is the resistance value corresponding to the pull-up resistor, 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 in the embodiment of the present application, as shown in fig. 39, a cable32 and a cable33 of an electronic device are disconnected, a cable31 is normally connected, a second voltage-dividing resistor R2 is short-circuited by a cable31, and a third voltage-dividing resistor R3 and a fourth voltage-dividing resistor R4 are connected in series.

Therefore, at this time, the potential at the detection point is V25 ═ V × (R3+ R4)/(R0+ R3+ R4), where V25 is the potential at 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, 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 in the embodiment of the present application, as shown in fig. 40, a cable31 and a cable33 of an electronic device are disconnected, a cable32 is normally connected, a fourth voltage-dividing resistor R4 is short-circuited by a cable32, and a second voltage-dividing resistor R2 is connected in series with a third voltage-dividing resistor R3.

Therefore, at this time, the potential at the detection point is V26 ═ V × (R2+ R3)/(R0+ R2+ R3), where V26 is the potential at 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, 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 in the embodiment of the present application, and as shown in fig. 41, a cable31, a cable32, and a cable33 of an electronic device are all disconnected, and a second voltage-dividing resistor R2, a third voltage-dividing resistor R3, and a fourth voltage-dividing resistor R4 are connected in series.

Therefore, at this time, the potential at the detection point is V27 ═ V × (R2+ R3+ R4)/(R0+ R2+ R3+ R4), where V27 is the potential at 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, 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 capacitance to ground C5, and the capacitance to ground C5 is disposed between the second end of the second voltage dividing resistor R2 and the ground GND2 to improve the isolation between the cable31 and the cable 32. Similarly, the second voltage division module 2302 may further include a capacitor to ground C8, and the capacitor to ground C8 is connected in parallel with the third voltage dividing resistor R3 to improve the isolation between the cable32 and the cable 33. The above-mentioned capacitors to ground C5 and C8 are similar to the capacitors to ground C5 and C8 shown in fig. 32, and will not be described in detail herein.

It should be noted that, in the above embodiments, the power supply module 2304 and the second voltage division module 2302 of the rf system are located on a sub-board of the electronic device, and the detection module 2303 and the first voltage division module 2301 of the rf system are located on a main board of the electronic device. However, in practical applications, 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 position of each circuit module may be adjusted with reference to the embodiments corresponding to fig. 4 to 7, and the embodiment of the present application does not limit the position of each circuit module.

Moreover, the first voltage dividing module 2301 and the second voltage dividing module 2302 may be coupled between two adjacent cards in different manners, which may refer to different coupling manners corresponding to the voltage dividing module 601 in fig. 6, and are not described herein again.

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

It should be noted that, in practical applications, the radio frequency system is applied to the electronic device, and a certain development period is required for updating and verifying the application program matched with the radio frequency system, so that before the application program matched with the radio frequency system is updated and verified, the existing application program of the electronic device still needs to implement an antenna in-place detection mechanism through GPIO, that is, radio frequency communication of the antenna of the electronic device is affected by detecting whether each cable is connected abnormally.

Therefore, on the basis of the electronic device with the GPIO, the radio frequency systems shown in fig. 17, fig. 22, fig. 23, fig. 32, fig. 33, and fig. 42 proposed by the embodiments of the present application still need to be added to the electronic device to implement different functions. For example, taking the addition of the radio frequency system shown in fig. 22 as an example, that is, when the electronic device includes GPIO and 2 cables (cable31 and cable32), the radio frequency system shown in fig. 22 is added, so as to obtain another radio frequency system shown in fig. 43.

Referring to fig. 43, the radio frequency system may include: GPIO detection module 4301, GPIO power supply module 4302, voltage division module 4303, detection module 4304 and power supply module 4305. Moreover, the radio frequency system may further include: a plurality of dc blocking capacitances (C1, C2, C3, and C4), a plurality of choke inductances (L1, L2, L3, and L4), and a capacitance to ground (C5).

The voltage dividing module 4303, the detection module 4304, the power supply module 4305, the multiple blocking capacitors, the multiple choke inductors, and the coupling manner to the ground capacitor are similar to the voltage dividing module 1701, the detection module 1702, the power supply module 1703, the multiple blocking capacitors, the multiple choke inductors, and the coupling manner to the ground capacitor shown in fig. 22, and are not described herein again.

Furthermore, 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 embodiments, 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, and the GPIO detection module 4301, the detection module 4304, and the voltage division 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 may be adjusted according to the layout design of the main board and the sub board, for example, the positions of the circuit modules may be adjusted with reference to the embodiments corresponding to fig. 4 to 7, and the positions of the circuit modules are not limited in the embodiments of the present application.

Moreover, the voltage dividing module 4303 may be coupled between two adjacent cans in different manners, which may refer to different coupling manners corresponding to the voltage dividing module 601 in fig. 6, and will not be described herein again.

In addition, if the detection module 4304 and the GPIO detection module 4301 of the radio frequency system are both located on a motherboard or a sub-board of the electronic device, the detection module 4304 may implement routing of the detection module 4304 in a routing multiplexing manner on the basis of the routing of the GPIO detection module 4301, so that the GPIO detection module 4301 determines whether each cable is disconnected or not, and meanwhile, determines whether each cable is correctly connected or not through the detection module 4304.

To sum up, the radio frequency system that this application embodiment provided is provided with at least one partial pressure module with the coupling of power module in the radio frequency system, and every partial pressure module series coupling, wherein every partial pressure module corresponds a cable, and every partial pressure module coupling is at the both ends of the cable that corresponds. If at least one cable the condition of disconnect-ing appears, then the electric current can flow to adjacent next circuit module through the voltage divider module that cable corresponds for resistance in the voltage divider module divides voltage, then the detection module of being connected with power module also can detect the potential of change, thereby can confirm every cable of disconnect-ing according to the potential of change, need not to set up the GPIO that is directly proportional with cable quantity, required hardware when can reduce each cable of detection and whether disconnect-ing, and reduce and detect each cable and whether connect the required cost of disconnect-ing.

In addition, the ground capacitor is arranged in the voltage division module, so that the ground capacitor is positioned between the two radio frequency circuits, and the radio frequency signals of the radio frequency system connected in series in the radio frequency circuits can be guided to the ground potential through the ground capacitor, so that the radio frequency signals in one radio frequency circuit can be prevented from entering the other radio frequency circuit through the radio frequency system, and the isolation between the two radio frequency circuits can be improved.

Furthermore, the radio frequency system provided by the embodiment of the application can be added by combining the original GPIO to adopt a routing multiplexing mode on the basis of the electronic device comprising the GPIO, so that the routing is reduced, and the hardware resources are saved. Moreover, on the basis of different functions of the original GPIO, whether each cable of the electronic equipment is disconnected or not can be determined by combining the radio frequency system, so that the functions of the radio frequency system can be enriched, and the diversity of the functions realized by the radio frequency system is improved.

It should be noted that, in practical application, the radio frequency system for detecting whether the cable is connected incorrectly may be combined with the radio frequency system for detecting whether the cable is disconnected, so as to obtain the radio frequency system shown in fig. 44, referring to fig. 44, which shows a circuit structure diagram of the radio frequency system when the electronic device includes 2 cables, and the radio frequency system may include: a plurality of circuit modules such as voltage division module 4401, detection module 4402 and power module 4403, the radio frequency system can also include: a first node (a), a plurality of dc blocking capacitances (C1, C2, C3, and C4), and a plurality of choke inductances (L1, L2, L3, and L4).

Wherein, voltage divider module 4401, detection module 4402 and power module 4403 are similar to voltage divider module 401, detection module 402 and power module 403 respectively, and are not described herein again.

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, a first end of the fifth voltage-dividing resistor R5 is coupled to the output end of the power supply module 4403, and a second end of the fifth voltage-dividing resistor R5 is coupled to a second end of the first voltage-dividing resistor R1.

In addition, the process of determining the potential of the detecting point and determining the connection state of each cable by the detecting module 4402 is similar to the foregoing, and is not described herein again.

Further, fig. 45 shows another combined rf system, referring to fig. 45, fig. 45 shows a circuit structure diagram of the rf system when 3 cables are included, and the rf system may include: a plurality of circuit modules, such as a first voltage division module 4501, a second voltage division module 4502, a detection module 4503, and a power supply module 4504, the radio frequency system may further include: a first node (a), a plurality of dc blocking capacitances (C1, C2, C3, C4, C6, and C7), and a plurality of choke inductances (L1, L2, L3, L4, L5, L6, and L7).

The first voltage division module 4501, the second voltage division module 4502, the detection module 4503, and the power supply module 4504 are similar to the first voltage division module 801, the second voltage division module 802, the detection module 803, and the power supply module 804, respectively, and are not described herein again.

Moreover, the fifth voltage dividing resistor R5 added in the voltage dividing module 4501 can refer to the voltage dividing module 4401 shown in fig. 44, and is not described herein again.

In addition, in the second voltage dividing module 4502, in addition to the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4, the second voltage dividing module 4502 may further include a sixth voltage dividing resistor R6, a first end of the sixth voltage dividing resistor R6 is coupled between the dc blocking capacitor C3 and the connection seat 43 corresponding to the rf circuit 12 through a choke inductor L5, and a second end of the sixth voltage dividing resistor R6 is coupled to a 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 process, and is not described herein again.

Fig. 46 is a schematic flow chart of a detection method provided by an embodiment of the present application, which may be applied to the processor connected to the radio frequency system as shown in fig. 2, by way of example and not limitation, and referring to fig. 46, the method includes:

step 4601, obtain the potential information corresponding to the detection point in the radio frequency system.

Wherein the potential information is used for representing the current potential level at the detecting point. In addition, 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 a potential change may occur along with a change in a circuit coupling manner in the radio frequency system.

In the process of producing the electronic device, the cable may be mounted on the connection socket of the electronic device, but since there are too many connection sockets, a plurality of cable connection errors may be caused. Or, in the process of using the electronic device, the electronic device may be affected by collision and impact, which causes the cable in the electronic device to fall off from the connection seat, resulting in a decrease in communication quality of the electronic device, or failure in radio frequency communication.

The embodiment of the present application provides a detection method, which is used for detecting whether each cable in electronic equipment is abnormal, that is, detecting whether each cable has a connection error or a disconnection condition, so as to store and/or remind information that the cable is abnormal.

In the process of detecting whether the cable is abnormal, the processor may combine with the radio frequency system shown in fig. 2 to obtain the potential information acquired by the detection module in the radio frequency system, so that in the subsequent step, the processor may determine whether each cable of the electronic device is abnormal according to the potential information.

For example, the processor may continuously obtain the potential information sent by the detection module in the radio frequency system, or may periodically obtain the potential information sent by the detection module, where a period for obtaining the potential information may be adjusted according to a circuit of the detection module, and a manner for obtaining the potential information is not limited in this embodiment of the application.

Step 4602, determine a target preset potential matched with the potential information from a plurality of preset potentials.

When any one of the cables of the electronic equipment is abnormal, the flow direction of current in the radio frequency system coupled with each cable changes, the partial voltage of each divider resistor in the radio frequency system also changes correspondingly, and the potential of a detection point in the radio frequency system also changes. Correspondingly, each potential which can be detected by the detection point can be stored as a preset potential in the processor, so that in the subsequent step, an abnormal cable in the electronic equipment can be determined according to the matched target preset potential.

The number of the preset potentials stored in the processor is in direct proportion to the number of the cable in the electronic device, and if the more the cable in the electronic device is, the more the preset potentials stored in the processor are.

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

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

It should be noted that, in practical applications, the processor may store the corresponding relationship between the preset potential and the connection state in advance. The corresponding relationship may include a plurality of preset potentials and a plurality of 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 buckled reversely; the connection state corresponding to the second preset potential may be that the cable3 is disconnected, that is, at least one end of the cable3 falls off from the corresponding connection seat.

Correspondingly, in the process of executing step 4602, the processor may obtain a plurality of preset potentials from the corresponding relationship, so that in the subsequent step, whether each cable of the electronic device is abnormal may be determined according to the connection state corresponding to each preset potential.

Step 4603, according to the preset corresponding relation, determining the target connection state corresponding to the target preset potential.

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

It should be noted that, after determining the target connection state, the processor may store the target connection state in a memory connected to the processor, so that when the electronic device is maintained, it may be determined that a cable of the electronic device is abnormal according to the target connection state stored in the memory, and the electronic device is maintained conveniently.

In addition, after completing step 4603, the processor may continue to perform step 4604. Of course, the processor may also execute other operations according to the target connection state, and the operation executed by the processor according to the target connection state is not limited in this embodiment.

Step 4604, according to the target connection state, reminding the radio frequency connection line of abnormal connection.

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

For example, the processor may obtain a prestored cable abnormal text and control the display screen to display the cable abnormal text, for example, the display screen may display "connect error of radio frequency connection line, please check! ", or may show" the RF connection line is disconnected, please check! ". Of course, the processor may also first obtain the pre-stored abnormal cable voice and control the speaker to play the abnormal cable voice, for example, the speaker may play "connect error of rf connection line, please check! ", or, it may play" radio frequency connection disconnect, please check! ". Further, the display screen displays the cable abnormal text, and the loudspeaker can play cable abnormal voice corresponding to the cable abnormal text.

In summary, in the detection method provided in the embodiment of the present application, the potential information corresponding to the detection point in the radio frequency system is obtained, the target preset potential matched with the potential information is determined from the preset potentials, and then the target connection state corresponding to the target preset potential is determined from the corresponding relationship, that is, whether each cable in the electronic device is abnormal, the abnormal type of each cable, and other information are determined. Through the preset potential that each cable appears abnormal and corresponds, on the basis of determining that the cable appears abnormal, the electronic equipment can be further and accurately determined to which cable of the electronic equipment appears abnormal, and the abnormal type (such as disconnection or connection error) of the cable can also be determined, GPIO (general purpose input/output) in direct proportion to the number of the cables is not required to be set, so that the hardware cost of detecting the cables can be reduced, and the function diversity and the flexibility of detecting the cables are improved.

The circuit architectures shown in fig. 1 to 45 and the method flow shown in fig. 46 can be applied to a terminal device. The following describes an electronic apparatus according to an embodiment of the present application. Referring to fig. 47, fig. 47 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

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 charging management module 4740, a power management module 4741, a battery 4742, an antenna 1, an antenna 2, a mobile communication module 4750, a wireless communication module 4760, an audio module 4770, a speaker 4770A, a receiver 4770B, a microphone 4770C, a headphone interface 4770D, a sensor module 4780, a button 4790, a motor 4791, an indicator 4792, a camera 4793, a display screen 4794, and a Subscriber Identity Module (SIM) card interface 4795, and the like. Among other sensor modules 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, an ambient light sensor 4780L, a bone conduction sensor 4780M, and the like.

It is to be understood that the illustrated structure of the present embodiment does not constitute a specific limitation to the electronic device. In other embodiments of the present application, an electronic device may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components may be used. 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, such as: the processor 4710 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), among others. The different processing units may be separate devices or may be integrated into one or more processors.

The controller can be a neural center and a command center of the electronic device. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be disposed within processor 4710 for storing instructions and data. In some embodiments, the memory in the processor 4710 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 4710. If the processor 4710 needs to reuse the instruction or data, it may be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 4710, 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 (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.

The I2C interface is a bi-directional synchronous serial bus that includes a serial data line (SDA) and a Serial Clock Line (SCL). In some embodiments, processor 4710 may include multiple sets of I2C buses. The processor 4710 may be coupled to the touch sensor 4780K, a charger, a flash, a camera 4793, etc., respectively, through different I2C bus interfaces. For example: the processor 4710 may be coupled to the touch sensor 4780K via an I2C interface such that the processor 4710 and the touch sensor 4780K communicate via an I2C bus interface to implement touch functionality of the electronic device.

The I2S interface may be used for audio communication. In some embodiments, processor 4710 may include multiple sets of I2S buses. The processor 4710 may be coupled to the audio module 4770 by an I2S bus to enable communication between the processor 4710 and the audio module 4770. In some embodiments, the audio module 4770 may transmit audio signals to the wireless communication module 4760 through an I2S interface, enabling the function of receiving a call through a bluetooth headset.

The PCM interface may also be used for audio communication, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 4770 and the wireless communication module 4760 may be coupled by a PCM bus interface. In some embodiments, the audio module 4770 may also transmit audio signals to the wireless communication module 4760 through the PCM interface, thereby enabling answering calls through a bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communications. 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 generally used to connect the processor 4710 with the wireless communication module 4760. For example: the processor 4710 communicates with a bluetooth module in the wireless communication module 4760 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 4770 may transmit the audio signal to the wireless communication module 4760 through a UART interface to realize the function of playing music through a bluetooth headset.

MIPI interfaces may be used to connect the processor 4710 with peripheral devices such as the display screen 4794, the cameras 4793, and the like. The MIPI interface includes a Camera Serial Interface (CSI), a Display Serial Interface (DSI), and the like. In some embodiments, the processor 4710 and the camera 4793 communicate over a CSI interface to implement a capture function of the electronic device. The processor 4710 and the display screen 4794 communicate through a DSI interface to implement a display function of the electronic device.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal and may also be configured as a data signal. In some embodiments, GPIO interfaces may 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 may also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, and the like.

The USB interface 4730 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 4730 may be used to connect a charger to charge an electronic device, and may also be used to transmit data between the electronic device and a peripheral device. And the earphone can also be used for connecting an earphone and playing audio through the earphone. The interface may also be used to connect other electronic devices, such as AR devices and the like.

It should be understood that the connection relationship between the modules illustrated in this embodiment is only an exemplary illustration, and does not limit the structure of the electronic device. In other embodiments of the present application, the electronic device may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.

The charging management module 4740 is configured to receive charging input from a 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 a wired charger through the USB interface 4730. In some wireless charging embodiments, the charging management module 4740 may receive a wireless charging input through a wireless charging coil of an electronic device. The charging management module 4740 may also provide power to the electronic device through the power management module 4741 while charging the battery 4742.

The power management module 4741 is used to connect the battery 4742, the charge 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, the wireless communication module 4760, and the like. The power management module 4741 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In other embodiments, the power management module 4741 may also be disposed in the processor 4710. In other embodiments, the power management block 4741 and the charge management block 4740 may be provided in the same device.

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

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

The mobile communication module 4750 may provide a solution including 2G/3G/4G/5G and the like wireless communication applied on an 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 may receive electromagnetic waves from the antenna 1, filter, amplify, etc., the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 4750 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 4750 may be disposed in the processor 4710. In some embodiments, at least some of the functional modules of the mobile communication module 4750 may be provided in the same device as at least some 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. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 4770A, the receiver 4770B, or the like), or displays an image or video through the display screen 4794. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 4750 or other functional modules, separately from the processor 4710.

The wireless communication module 4760 may provide a solution for wireless communication applied to an electronic device, including a Wireless Local Area Network (WLAN) (e.g., a wireless fidelity (Wi-Fi) network), a Bluetooth (BT), a Global Navigation Satellite System (GNSS), a Frequency Modulation (FM), a Near Field Communication (NFC), an Infrared (IR), and the like. The wireless communication module 4760 may be one or more devices that integrate at least one communication processing module. The wireless communication module 4760 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 4710. The wireless communication module 4760 may also receive a signal to be transmitted from the processor 4710, frequency modulate it, amplify it, and convert it into electromagnetic waves via the antenna 2 to radiate it.

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 such that the electronic device can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

The electronic device implements a display function by the GPU, the display screen 4794, and the application processor, etc. The GPU is a microprocessor for image processing, and is connected to the display screen 4794 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 4710 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 4794 is used to display images, video, and the like. The display screen 4794 includes a display panel. The display panel may adopt a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-oeld, a quantum dot light-emitting diode (QLED), and the like. In some embodiments, the electronic device may include 1 or N display screens 4794, N being a positive integer greater than 1.

The external memory interface 4720 may be used to connect an external memory card, such as a Micro SD card, to extend the storage capability of the electronic device. The external memory card communicates with the processor 4710 through the external memory interface 4720 to implement a data storage function. For example, files such as music, video, etc. are saved in an external memory card.

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

The electronic device may implement audio functions through the audio module 4770, the speaker 4770A, the headphones 4770B, the microphone 4770C, the headphone interface 4770D, and the application processor, etc. Such as music playing, recording, etc.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or apparatus capable of carrying computer program code to a terminal device, recording medium, computer Memory, Read-Only Memory (ROM), Random-Access Memory (RAM), electrical carrier wave signals, telecommunications signals, and software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.

Finally, it should be noted that: the above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A radio frequency system, comprising: the antenna comprises a first radio frequency circuit, a second radio frequency circuit, a first antenna, a second antenna, a first radio frequency connecting line and a second radio frequency connecting line, wherein the first antenna is coupled with the first radio frequency circuit or the second radio frequency circuit through the first radio frequency connecting line, and the second antenna is coupled with the first radio frequency circuit or the second radio frequency circuit through the second radio frequency connecting line;

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 of claim 1, further comprising: a first pair of ground capacitors connected in parallel with the first voltage dividing element.

3. The radio frequency system according to claim 1 or 2, characterized in that the radio frequency system further comprises: a third voltage dividing element coupled in parallel across the first RF link.

4. A radio frequency system according to any of claims 1 to 3, further comprising a power supply, the first node being coupled to the power supply;

5. The radio frequency system according to any of claims 1 to 4, further comprising: and the radio frequency system acquires the potential of the first node through the detection module.

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. The radio frequency system according to any of claims 1 to 6, further comprising: the first connecting seat, the second connecting seat, the third connecting seat and the fourth connecting seat;

8. The radio frequency system according to any of claims 1 to 7, wherein the potential of the first node changes with a change in the coupling of the first radio frequency connection line and the second radio frequency connection line.

9. The radio frequency system according to claim 8, wherein when both ends of the first radio frequency connection line are coupled to the first radio frequency circuit and the first antenna, respectively, and both ends of the second radio frequency connection line are coupled to the second radio frequency circuit and the second antenna, respectively, the potential of the first node is in a first state;

10. The rf 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 ground potentials.

11. The radio frequency system according to any one of claims 1 to 10, further comprising: a third radio frequency circuit, a third antenna, and a third radio frequency connection line, the third radio frequency circuit coupled to the first antenna, the second antenna, or the third antenna through the third radio frequency connection line;

12. The radio frequency system of claim 11, further comprising: a second capacitance to ground connected in parallel with the fourth voltage divider element.

13. The radio frequency system according to claim 11 or 12, further comprising: and the sixth voltage division element is coupled at two ends of the second radio frequency connecting line in parallel.

14. The radio frequency system according to any of claims 11 to 13, further comprising:

a fifth connecting seat and a sixth connecting seat;

a fifth blocking capacitor and a sixth blocking capacitor;

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

15. The radio frequency system according to any of claims 11 to 14, wherein the fourth voltage dividing element and the fifth voltage dividing element are both resistors.

16. The radio frequency system of any one of claims 1 to 15, wherein the radio frequency system further comprises a general purpose input/output port (GPIO) detection module, and wherein the first node is further coupled to the GPIO detection module.

17. A radio frequency system, comprising: the antenna comprises N radio frequency circuits, N antennas and N radio frequency connecting lines, wherein N is an integer greater than or equal to 2, and the ith radio frequency circuit is coupled with the ith antenna through the ith radio frequency connecting line, i is a positive integer less than or equal to N-1;

the second voltage dividing element is coupled in series between an ith one of the radio frequency connection lines and an (i + 1) th one of the radio frequency connection lines.

18. An electronic device, comprising: a memory, a processor, a computer program stored in the memory and executable on the processor, and the radio frequency system according to any of claims 1 to 17, wherein the processor, when executing the computer program, implements the detection of the radio frequency connection line in the electronic device based on the radio frequency system according to any of claims 1 to 17.

19. The electronic device of claim 18, further comprising: at least one of a display and a speaker;

20. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, enables detection of a radio frequency connection line in an electronic device based on a radio frequency system according to any one of claims 1 to 17.