WO2023065888A1

WO2023065888A1 - Circuit board assembly, and electronic device and control method therefor

Info

Publication number: WO2023065888A1
Application number: PCT/CN2022/118428
Authority: WO
Inventors: 杨江燕
Original assignee: 深圳市锐尔觅移动通信有限公司
Priority date: 2021-10-22
Filing date: 2022-09-13
Publication date: 2023-04-27
Also published as: CN113966071A

Abstract

A circuit board assembly, comprising: a motherboard body (100) configured with a ground terminal; a first connecting seat (200) connected to the motherboard body (100), the first connecting seat (200) being configured with ground pins (210), the first connecting seat (200) being used for being connected to a target device, and a signal transmission path being formed between the first connecting seat (200) and the target device; and a filter module (300) separately connected to the ground pins (210) of the first connecting seat (200) and the ground terminal of the motherboard body (100), the filter module (300) being used for filtering out a clutter signal generated on the signal transmission path.

Description

Circuit board assembly, electronic device and control method thereof

Cross References to Related Applications

This application claims priority to a Chinese patent application with application number 2021112355103 and titled "circuit board assembly, electronic device and control method thereof" filed with the China Patent Office on October 22, 2021, the entire contents of which are hereby incorporated by reference In this application.

technical field

The present application relates to the field of radio frequency technology, in particular to a circuit board assembly, electronic equipment and a control method thereof.

Background technique

The statements herein merely provide background information related to the present application and do not necessarily constitute exemplary techniques.

With the rapid development of wireless communication technology, the fifth generation (5G) wireless communication system has been fully commercialized. In order to realize richer functions, a large number of functional devices need to be provided in the electronic equipment. However, these functional devices will interfere with the communication function to a certain extent during use, thereby affecting the communication quality of the electronic equipment.

Contents of the invention

According to various embodiments of the present application, a circuit board assembly, an electronic device, and a control method thereof are provided.

A circuit board assembly, comprising:

The motherboard body is configured with a ground terminal;

The first connecting seat is connected to the main board body, the first connecting seat is configured with a ground pin, the first connecting seat is used to connect to a target device, and the first connecting seat is connected to the target device. Form a signal transmission path between;

A filter module is connected to the ground pin of the first connecting seat and the ground terminal of the main board body respectively, and the filter module is used to filter out the clutter signal generated on the signal transmission path.

An electronic device comprising:

a circuit board assembly as above;

first antenna;

a second connecting seat connected to the first connecting seat;

A signal cable is connected to the second connection socket, and the clutter signal is a signal generated by the signal cable.

A method for controlling an electronic device, comprising:

Obtain a first distance between the first antenna and the signal cable, one end of the signal cable is connected to the first connection seat in the circuit board assembly through the second connection seat, the ground pin of the first connection seat and A filter path and a direct connection path are configured between the ground terminals, and a filter module is connected to the filter path;

When the first distance is less than the distance threshold, control the ground pin of the first connection socket to be connected to the ground terminal through the filter path, so as to filter out the clutter signal generated on the signal cable; when the When the first distance is greater than or equal to the distance threshold, the ground pin of the first connecting seat is controlled to be connected to the ground terminal through the direct connection path.

An electronic device comprising:

a circuit board assembly as above;

first antenna;

a second connecting seat connected to the first connecting seat;

The camera is connected to the second connection socket, and is used to transmit camera signals to the main board body through the second connection socket and the first connection socket in sequence.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present application will be apparent from the description, drawings and claims.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments or exemplary technologies of the present application, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or exemplary technologies. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain the drawings of other embodiments according to these drawings without creative work.

Fig. 1 is one of structural schematic diagrams of the circuit board assembly of an embodiment;

Fig. 2 is a schematic diagram of pads on the motherboard body of an embodiment;

Fig. 3 is a structural schematic diagram of an antenna base of an embodiment;

Fig. 4 is a schematic diagram of the pins of the first connecting seat of an embodiment;

FIG. 5 is a schematic diagram of a partial structure of an electronic device according to an embodiment;

FIG. 6 is a simulation result diagram of the return loss of the first antenna when no filter module is provided;

FIG. 7 is a simulation result diagram of the antenna efficiency of the first antenna when no filtering module is provided;

8 is a simulation result diagram of the return loss of the first antenna when the filter module is set;

Fig. 9 is a simulation result diagram of the antenna efficiency of the first antenna when the filter module is set;

FIG. 10 is a second structural schematic diagram of a circuit board assembly of an embodiment;

FIG. 11 is a flowchart of a method for controlling an electronic device according to an embodiment.

Component label description:

Main board body: 100; first connection seat: 200; first connection seat pad area: 201; ground pin: 210; seat body: 220; signal terminal: 230; signal pin: 240; filter module: 300; filter Module pad area: 301; filter path: 310; high-pass filter unit: 311; low-pass filter unit: 312; frequency band selection unit: 313; direct connection path: 320; second connection seat: 400; signal cable: 500; First Antenna: 600; Second Antenna: 700.

Detailed ways

In order to facilitate understanding of the embodiments of the present application, the following will describe the embodiments of the present application more comprehensively with reference to related drawings. A preferred embodiment of the embodiments of the application is given in the accompanying drawings. However, the embodiments of the present application can be implemented in many different forms, and are not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the embodiments of the present application more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the embodiments of this application. The terms used herein in the description of the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner" and "outer" are based on the drawings The method or positional relationship shown is only for the convenience of describing the embodiment of the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Limitations on the embodiments of this application.

It can be understood that the terms "first", "second" and the like used in this application may be used to describe various elements herein, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first radio frequency signal could be termed a second radio frequency signal, and, similarly, a second radio frequency signal could be termed a first radio frequency signal, without departing from the scope of the present application. Both the first radio frequency signal and the second radio frequency signal are radio frequency signals, but they are not the same radio frequency signal.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. In the description of the present application, "several" means at least one, such as one, two, etc., unless otherwise specifically defined.

The circuit board assembly of the embodiment of the present application is provided in an electronic device with a communication function. Specifically, the electronic device may be, but not limited to, any mobile terminal such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant, a personal digital assistant), a POS (Point of Sales, a sales terminal), a vehicle-mounted computer, or a wearable device. The electronic device includes at least a first antenna to support the communication function required by the electronic device. Exemplarily, the first antenna may be used to support signal transceiving in the 4G or 5G frequency band, or to support global positioning system (Global Positioning System, GPS) signal transceiving, or to support near field communication (Near Field Communication, NFC ) signal transmission and reception, etc., are not limited in this embodiment.

FIG. 1 is a schematic structural diagram of a circuit board assembly according to an embodiment. Referring to FIG. 1 , in this embodiment, the circuit board assembly includes a main board body 100 , a first connection socket 200 and a filter module 300 .

Specifically, FIG. 2 is a schematic diagram of pads on the motherboard body of an embodiment. With reference to FIG. There are multiple pads. For example, the pad area 201 of the first connection seat is provided with 4 pads for connecting the first connection seat, and the pad area 301 of the filter module is provided with 2 pads for connecting the filter module. The main board body 100 is provided with metal traces (not shown) for connecting different pads, so as to realize the function of the circuit board assembly. Therefore, components such as the first connection socket 200 and the filter module 300 in the circuit board assembly can be understood as being fixedly connected to the pads on the main board body 100 , and the circuit conduction is realized through the metal wiring in the main board body 100 .

Continuing to refer to FIG. 1 , the motherboard body 100 is configured with a ground terminal, and devices in the circuit board assembly can be connected to the ground terminal to realize the ground function. Wherein, the number of ground terminals on the motherboard body 100 can be multiple, and each device in the circuit board assembly can be connected to the corresponding ground terminal nearby, so as to reduce the number of wires in the motherboard body 100 . For ease of description, the embodiments of the present application are described using ground terminals, but it can be understood that different devices can be connected to ground through different ground terminals, and the specific connection method between devices and ground terminals is not limited in this embodiment.

The first connection base 200 is connected to the motherboard body 100, the first connection base 200 is configured with a ground pin, the first connection base 200 is used to connect to a target device (not shown), the first A signal transmission path is formed between the connecting base 200 and the target device. Wherein, the target device may be, but not limited to, a radio frequency device, a front camera, a rear camera, and the like. Moreover, the connection relationship between the first connection socket 200 and the target device may be an indirect connection, that is, other devices may be arranged on the signal transmission path to support other signal transmission functions or detection functions for transmission signals. It can be understood that the signal transmission path itself usually generates certain clutter signals. Exemplarily, the clutter signal may be the clutter signal caused by other devices on the signal transmission path because the distance between the signal transmission path and other devices is too close, and the clutter signal may also be caused by the internal structure of the device on the signal transmission path The clutter signal is not limited in this embodiment. When there is a radio frequency device adjacent to the signal transmission path, the clutter signal will interfere with the radio frequency device, thereby affecting the radio frequency performance of the radio frequency device. In this embodiment, the adjacent radio frequency devices refer to the aforementioned first antenna, that is, clutter signals will cause degradation of the radio frequency performance of the first antenna.

The filter module 300 is respectively connected to the ground pin of the first connection socket 200 and the ground terminal of the motherboard body 100 , and the filter module 300 is used to filter out the clutter signal generated on the signal transmission path. By setting the filtering module 300, the clutter signal on the signal transmission path can be filtered out, thereby suppressing the influence of the clutter signal on adjacent radio frequency devices, improving the radio frequency performance of the radio frequency device, and further improving the communication quality of the electronic equipment.

In the related art, avoidance means are usually used to realize the coexistence of the target device and the first antenna, however, avoidance requires a large amount of separation space to be realized, thus resulting in a low space utilization rate in the electronic device. In some cases, it is even necessary to sacrifice part of the radio frequency performance of the first antenna to achieve a coexistence solution. The sacrificed radio frequency performance includes, for example, isolation performance and Over-the-Air Technology (Over-the-Air Technology, OTA) performance, etc., resulting in users The user experience is reduced. In this embodiment, based on the above-mentioned circuit board assembly, the first connection socket 200 can send and receive normal signals to the target device through the signal transmission path, and filter out the clutter signals through the filter module 300, so that the space utilization rate can be ensured. Basically, the impact of clutter signals on the signal transmission path on external radio frequency devices adjacent to each other is reduced, thereby improving the communication quality of electronic equipment.

In one embodiment, the first connecting base 200 is an antenna base. FIG. 3 is a schematic structural diagram of an antenna base according to an embodiment. Referring to FIG. 3 , the antenna base includes a base body 220 , a signal terminal 230 , a signal pin 240 and a ground pin 210 . Specifically, when the seat body 220 is assembled, the side facing the main board body is the bottom, and the side of the seat body 220 away from the main board body is the top, and the top and the bottom are arranged opposite to each other. Both the signal pin 240 and the ground pin 210 are disposed on the bottom of the base body 220 to connect with the pads on the main body of the motherboard. The signal pin 240 can be connected to the radio frequency chip on the main board body through the pad, and the ground pin 210 can be connected to the ground terminal on the main board body through the pad. The signal terminals 230 are disposed on the top of the base body 220 , and the signal terminals 230 are used for connecting signal cables. Therefore, the signal cable can transmit the received radio frequency signal to the radio frequency chip through the signal terminal 230, the signal pin 240 and the wiring in the main board body, and the radio frequency signal output by the radio frequency chip can pass through the wiring in the main board body, the signal lead The pin 240 and the signal terminal 230 are transmitted to the signal cable, and then transmitted to the radio frequency device (such as the third antenna) connected to the signal cable, so as to realize the transmission of the radio frequency signal.

Further, when the first connecting seat 200 is connected to the signal cable through another matching connecting seat, the top of the first connecting seat 200 can also be provided with a first connecting structure 250, so as to realize the connection between the first connecting seat 200 and the signal cable. The detachable connection of another connection base improves the connection flexibility of the first connection base 200 and realizes a stable connection during the transmission of radio frequency signals. Wherein, the cooperation in the embodiment of the present application refers to the cooperation in the mechanical concept. That is, when the first connection base 200 is assembled with another connection base, it can have target assembly accuracy, and the assembly accuracy includes but not limited to distance accuracy and contact quality. Optionally, the first connection structure 250 includes but is not limited to a screw connection structure, a buckle connection structure and the like. Still further, the base body 220 may be a rectangular parallelepiped structure, and is provided with the above-mentioned first connection structure 250 . The first connection structure 250 may be circular, and the side of the first connection structure 250 away from the bottom of the antenna seat is provided with a chamfer. The signal terminal 230 is disposed at the center of the first connection structure 250 . The signal terminal 230 may be cylindrical, and the side of the signal terminal 230 away from the bottom of the antenna base is rounded.

In one embodiment, the antenna base is configured with multiple ground pins 210 . Fig. 4 is a schematic diagram of the pins of the first connecting base 200 of an embodiment. Referring to Fig. 4, in this embodiment, the antenna base is configured with three ground pins 210, and the three ground pins 210 are mutually conductive. In other words, the three ground pins 210 are connected to each other through the internal structure of the antenna base. One of the three ground pins 210 is connected to the filter module, and the remaining ground pins 210 are isolated from the ground terminal. Continuing to refer to FIG. 4 , in this embodiment, the three ground pins 210 are ground pin 2 , ground pin 3 and ground pin 4 . When the antenna base is soldered to the main board body, the ground pin 2 is connected to the pad on the main board body to connect to the filter module. disk connection. Through the above structure, only one filter module is required to realize the function that all three ground pins 210 of the first connection base are connected to the ground through the filter module. Compared with the connection method in which each ground pin 210 is connected to the ground through a corresponding filter module, this embodiment requires fewer filter modules, thus reducing the number of components and improving space utilization. At the same time, the above setting method can also reduce the number of wires in the motherboard body, thereby simplifying the circuit design.

An embodiment of the present application provides an electronic device, including the above-mentioned circuit board assembly, a second connection base 400 , a signal cable 500 and a first antenna 600 . FIG. 5 is a schematic diagram of a partial structure of an electronic device according to an embodiment. FIG. 5 shows a partial structure of the above-mentioned circuit board assembly, the second connection base 400 , the signal cable 500 and the first antenna 600 .

Referring to FIG. 5 , the second connection base 400 is connected to the first connection base 200 , and the second connection base 400 and the first connection base 200 correspond to a mating female base and a male head respectively. Specifically, the first connection seat 200 is a female seat, and the second connection seat 400 is a male head. After the second connection base 400 is assembled, the side close to the first connection base 200 is the top, and after the second connection base 400 is assembled, the side away from the first connection base 200 is the bottom. A signal hole is provided on the top of the second connection base 400 , and the shape of the signal hole matches the shape of the signal terminal 230 of the first connection base 200 . After the second connection base 400 is assembled with the first connection base 200 , the signal terminals of the first connection base 200 are embedded in the signal holes of the second connection base 400 .

The top of the second connection base 400 may be provided with a second connection structure corresponding to the shape of the first connection structure on the top of the first connection base 200 to achieve detachable connection with the first connection base 200 . Exemplarily, external threads may be provided on the outer wall of the first connection structure, and internal threads of comparable size may be provided at corresponding positions on the inner wall of the second connection structure. In another example, grooves may be provided on the outer wall of the first connection structure, and protrusions of comparable size may be provided at corresponding positions on the inner wall of the second connection structure, and the protrusions may be embedded in the grooves. After the second connecting base 400 is assembled, the side away from the first connecting base 200 is used for connecting one end of the signal cable 500 , and the other end of the signal cable 500 is used for connecting the third antenna.

The signal cable 500 is connected to the second connection base 400 , specifically, the signal cable 500 is connected to the signal hole of the second connection base 400 to be indirectly connected to the first connection base 200 . The signal cable 500 is led out from the bottom of the second connection base 400 to connect to the radio frequency device. Wherein, the radio frequency device connected to the signal cable 500 may be, for example, a third antenna, and the third antenna transmits to the The main board body sends and receives the third radio frequency signal. That is, in this embodiment, the third antenna, the signal cable 500 , the second connection socket 400 and the first connection socket 200 may be provided on the signal transmission path.

Optionally, the first antenna 600 may be directly disposed on the main board body, or may be disposed on an external antenna board and indirectly connected to the main board body, which is not limited in this embodiment. Exemplarily, the first antenna 600 can be used to support signal transceiving in the GPS L5 frequency band, the carrier frequency of the GPS L5 frequency band is 1176.45 MHz, the wavelength of L5 is longer, the free space attenuation is smaller, and the signal stability is better.

Continuing to refer to FIG. 5 , the area filled with twill lines is the wiring coverage area of the first antenna 600. It can be seen from FIG. Below, therefore, it is more difficult to achieve coexistence through avoidance. In related technologies, in order to reduce the interference of the signal cable 500 to the first antenna 600, the distance between the signal cable 500 and the first antenna 600 is set to be greater than a distance threshold. However, if the position of the signal cable 500 is not limited by the wire clamp, the position of the signal cable 500 will move to a certain extent during use. Specifically, during use, the signal cable 500 may move from the designed position in the figure to other positions, resulting in poor consistency of the position of the signal cable 500 . At the same time, since the signal cable 500 is made of metal, the clutter signal generated by the signal cable 500 will also change with the movement of the position. Wherein, the frequency band of the clutter signal is jointly determined by factors such as the length of the signal cable 500 and the distance between the signal cable 500 and the first antenna 600 . When the distance between the signal cable 500 and the first antenna 600 is less than the distance threshold, the clutter signal will affect the radio frequency performance of the first antenna 600, for example, causing the first radio frequency signal transmitted and received by the first antenna 600 to generate clutter. The wave may cause the standing wave to shift, thereby affecting the OTA performance of the first antenna 600 . However, if the position of the signal cable 500 is fixed by a wire clip, the size of the wire clip is usually about 1.2mm×1.9mm, which will greatly occupy the space in the electronic device, resulting in insufficient space utilization. In addition, based on the above situation, the consistency of the first antenna 600 cannot be controlled, which makes it difficult to test the consistency of the first antenna 600 . Therefore, it is also difficult to improve the above problems by directly adjusting the first antenna 600 .

In this embodiment, the filtering frequency band of the filtering module 300 corresponds to the frequency band of the clutter signal. By setting the filtering module 300, the clutter signal in the signal cable 500 can be filtered out, thereby suppressing the influence of the clutter signal on the first antenna 600, improving the radio frequency performance of the first antenna 600, and further improving the communication quality of the electronic device. Specifically, Fig. 6 is a simulation result diagram of the return loss of the first antenna when the filter module is not provided, and the return loss (Return Loss, RL) refers to the ratio between the incident power and the reflected power, and the abscissa in Fig. 6 is the frequency, the unit is GHZ, and the ordinate in Fig. 6 is the return loss, and the unit is the logarithmic coordinate (magnitude) of log10. Table 1 shows the simulation results of the antenna efficiency of the first antenna when the filter module is not set. The antenna efficiency refers to the ratio of the power radiated by the antenna (that is, the power that effectively converts the electromagnetic wave part) to the active power input to the antenna. Figure 7 shows According to the simulation result diagram generated in Table 1, the abscissa in Fig. 7 is the frequency, and the unit is GHZ, and the ordinate in Fig. 7 is the antenna efficiency, and the unit is percentage. Referring to FIG. 6 , when the signal cable is at the moved position, relative to the designed position, the center frequency of the frequency band is shifted to the low frequency, that is, the frequency band of the radio frequency signal is shifted. Referring to Table 1 and Figure 7, when the signal cable is at the moved position, relative to the design position, the peak efficiency and average efficiency of the frequency band are reduced, the peak efficiency is reduced by about 4.08dB, and the average efficiency is reduced by about 1.41dB. The radio frequency performance of the first antenna is greatly affected.

Table 1 Simulation results of the antenna efficiency of the first antenna when no filter module is set

Fig. 8 is the simulation result diagram of the return loss of the first antenna when the filtering module is set, the abscissa in Fig. 8 is frequency, and the unit is GHZ, and the ordinate among Fig. 8 is return loss, and the logarithmic coordinate of unit is log10 (magnitude). Table 2 is the simulation result of the antenna efficiency of the first antenna when the filtering module is set, and Fig. 9 is a simulation result diagram generated according to Table 2, the abscissa in Fig. 9 is frequency, and the unit is GHZ, and the ordinate in Fig. 9 is the antenna Efficiency, in percent. Referring to FIG. 8 , after setting the filter module, when the signal cable is at the moved position, relative to the design position, the center frequency of the frequency band does not shift, that is, the frequency band of the radio frequency signal remains stable. Referring to Table 2 and Figure 9, when the signal cable is at the moved position, relative to the design position, the peak efficiency and average efficiency of the frequency band fluctuate less, the peak efficiency only changes by about 0.19dB, and the average efficiency only changes by about 0.08dB.

Table 2 Simulation results of the antenna efficiency of the first antenna when the filter module is set

Obviously, by adopting the structure of FIG. 5 , the radio frequency performance of this embodiment is greatly improved compared with the case where no filter module 300 is provided. Therefore, in this embodiment, by connecting the ground pin of the antenna pedestal to the ground through the filter module 300, the clutter signal generated on the signal cable 500 can be effectively filtered, so there will be no clutter signal affecting the first The RF performance of an antenna 600 is affected. Further, in some embodiments, it is not necessary to space the first antenna 600 from the signal cable 500, that is, the distance between the first antenna 600 and the signal cable 500 can be made smaller than the distance threshold to improve space utilization. Rate.

Fig. 10 is the second structural schematic diagram of a circuit board assembly of an embodiment. The circuit board assembly of this embodiment can be set in the electronic device of the embodiment of Fig. 5. Referring to Fig. 10, in one embodiment, the first A filter path 310 and a direct connection path 320 are arranged between the ground pin 210 of the connection base and the ground terminal of the motherboard body. Wherein, the filtering module 300 is connected to the filtering path 310, and the direct connection path 320 can be understood as a path without the filtering module 300 described above. Exemplarily, a switch element can be set on the direct connection path 320 to control the on-off of the direct connection path 320. When the direct connection path 320 is turned on, the filter path 310 is short-circuited, and the signal on the ground pin 320 is directly transmitted to the ground terminal ; When the direct connection path 320 is disconnected, the signal on the ground pin 320 is transmitted to the ground terminal through the filter module 300, thereby realizing the filtering of the clutter signal.

Specifically, referring to FIG. 5 and FIG. 10 , when the distance between the first antenna 600 and the signal cable 500 is less than the distance threshold, the clutter signal generated on the signal cable 500 may affect the first antenna 600. Therefore, the ground pin 210 of the first connection socket is used to connect to the ground terminal of the motherboard body through the filter path 310 . When the distance between the first antenna and the signal cable is greater than or equal to the distance threshold, the signal transmitted on the signal cable 500 will not affect the radio frequency performance of the first antenna 600, therefore, the The ground pin of the first connecting seat is used to connect to the ground terminal of the motherboard body through the direct connection path. In this embodiment, by setting the direct connection path 320, when the distance between the first antenna 600 and the signal cable 500 is relatively long, or when no clutter signal is generated on the signal cable 500, grounding leads can be avoided to the greatest extent. The loss on the path between the pin 210 and the ground terminal ensures the radio frequency performance of the third antenna connected to the first connection base 200 . It can be understood that the distance between the first antenna 600 and the signal cable 500 may be detected by a distance sensor, a position sensor and other devices, which is not limited in this embodiment.

In a possible implementation manner, the first antenna 600 is further connected with a radio frequency performance detection circuit. When the distance between the first antenna 600 and the signal cable 500 is less than the distance threshold, the radio frequency performance such as antenna efficiency and return loss of the first antenna 600 may be detected by a radio frequency performance detection circuit. If the radio frequency performance is attenuated, the ground pin 210 of the first connecting seat is controlled to be connected to the ground terminal of the motherboard body through the filter path 310 . If there is no attenuation in the radio frequency performance, the ground pin 210 of the first connecting seat is controlled to be connected to the ground terminal of the motherboard body through the direct connection path 320, thereby further improving the flexibility of filtering.

Continuing to refer to FIG. 10 , in one embodiment, the filtering module 300 includes a high-pass filtering unit 311 , a low-pass filtering unit 312 and a frequency band selection unit 313 . The high-pass filter unit 311 is connected to the ground terminal, and is used for conducting high-frequency signals and blocking low-frequency signals. The low-pass filter unit 312 is connected to the ground terminal, and is used for conducting low-frequency signals and blocking high-frequency signals. The first end of the frequency band selection unit 313 is connected to the ground pin of the first connection socket, and the two second ends of the frequency band selection unit 313 are respectively connected to the high-pass filter unit 311 and the low-pass filter unit. 312 are connected in one-to-one correspondence, and the frequency band selection unit 313 is used to select and conduct signal transmission paths between the first end and any second end. It can be understood that the closer the frequency of the clutter signal is to the frequency of the interfered signal, the stronger the interference will be. Therefore, the corresponding filter unit may be selected according to the frequency band of the clutter signal and the working frequency band of the first antenna 600 .

Specifically, when the first antenna 600 is used to send and receive low-frequency signals, clutter signals in the low-frequency band are likely to cause interference, which affects the radio frequency performance of the first antenna 600 . Specifically, the low frequency band of the clutter signal may be but not limited to 200KHz-300KHz. Correspondingly, the high-pass filter unit 311 may include a first capacitor, and the first capacitor is respectively connected to the ground pin 210 and the ground terminal. The capacitive element has the characteristics of high-pass and low resistance. Therefore, when the frequency band of the clutter signal is a low-frequency band, by setting the first capacitor between the ground terminal and the ground pin 210 of the antenna base, the low-frequency clutter signal will be eliminated by the first capacitor. Capacitive isolation allows normal high-frequency signals to flow to the mainboard body, thereby filtering out low-frequency clutter signals, reducing the impact of clutter signals on the performance of the first antenna 600, and keeping the radio frequency performance of the first antenna 600 stable. In some embodiments, the high-pass filter unit 311 may also be a circuit composed of multiple electronic components, and the circuit may be equivalent to a first capacitor, and the high-pass filter unit 311 is not limited to only include one electronic component.

When the first antenna 600 is used to send and receive high-frequency signals, the clutter signals in the high-frequency band are likely to cause interference, which affects the radio frequency performance of the first antenna 600 . Exemplarily, the high frequency band of the clutter signal may be but not limited to 1710MHz-1880MHz. Wherein, the low-pass filtering unit 312 may include a first inductor, and the first inductor is respectively connected to the ground pin 210 and the ground terminal. The inductance element has the characteristics of low-pass and high-resistance. Therefore, when the frequency band of the clutter signal is a high-frequency band, by setting the first inductance between the ground terminal and the ground pin 210 of the antenna base, the high-frequency clutter signal will be Isolated by the first inductor, normal low-frequency signals can flow to the motherboard body, thereby filtering out the clutter signals in the high-frequency band, reducing the impact of clutter signals on the performance of the first antenna 600, and making the radio frequency performance of the first antenna 600 keep it steady. In some embodiments, the low-pass filter unit 312 may also be a circuit composed of multiple electronic components, and the circuit may be equivalent to the first inductor, and the low-pass filter unit 312 is not limited to only include one electronic component.

In one of the embodiments, the first antenna 600 includes a first radiator and an antenna matching network. The first radiator is used to send and receive radio frequency signals, the first radiator is provided with a ground point, and the antenna matching network is respectively connected to the ground point of the first radiator and the ground terminal, and the antenna matching network is connected to the first radiator. The impedance of the radiator is matched. It can be understood that the structure and function of the antenna matching network can be set according to specific functions of the first antenna 600 . Exemplarily, if an antenna compatible with multiple different frequency bands is used, the antenna matching network may be used to implement matching for different frequency bands, so that the antenna can support the coexistence of multiple different frequency bands. Wherein, the antenna matching network may include a circuit structure composed of at least one of resistors, capacitors, and inductors, and the specific structure of the antenna matching network is not limited in this embodiment.

In one embodiment, continuing to refer to FIG. 5 , the electronic device further includes a second antenna 700 for sending and receiving a second radio frequency signal. Exemplarily, the second antenna 700 may be used to support the sending and receiving of the second radio frequency signal in at least one frequency band of N77, N78, B1, B3, B38, B40 and B41. The dotted filling area in FIG. 5 is the wiring coverage area of the second antenna 700, and the second antenna 700 is arranged on the side of the first antenna 600 away from the signal cable 500, and the second antenna 700 is connected to the signal cable 500. The distance between them is greater than the distance threshold. Wherein, the first antenna 600 is used to send and receive a first radio frequency signal, and the difference between the center frequency of the first radio frequency signal and the center frequency of the clutter signal is greater than the center frequency and the center frequency of the second radio frequency signal The difference between the center frequencies of the clutter signals. It can be understood that the closer the frequency of the clutter signal is to the frequency of the interfered signal, the stronger the interference of the clutter signal to the interfered signal is. Therefore, in this embodiment, the antenna whose frequency is relatively close to the clutter signal can be set away from the signal cable 500, so as to further reduce the interference of the clutter signal, and further improve the communication quality of the electronic device.

FIG. 11 is a flowchart of a method for controlling an electronic device according to an embodiment. Referring to FIG. 11 , in this embodiment, the method for controlling an electronic device includes steps 1102 to 1104 .

Step 1102, obtain the first distance between the first antenna and the signal cable, one end of the signal cable is connected to the first connection seat in the circuit board assembly through the second connection seat, and the ground of the first connection seat A filter path and a direct connection path are configured between the pin and the ground terminal, and a filter module is connected to the filter path.

Step 1104, when the first distance is less than the distance threshold, control the ground pin of the first connection socket to be connected to the ground terminal through the filter path, so as to filter out the clutter signal generated on the signal cable; When the first distance is greater than or equal to the distance threshold, the ground pin of the first connecting seat is controlled to be connected to the ground terminal through the direct connection path.

In this embodiment, by setting the filter path, the clutter signal on the signal cable can be filtered out, thereby suppressing the influence of the clutter signal on the first antenna at an adjacent position, improving the radio frequency performance of the first antenna, thereby improving Communication quality of electronic devices. Moreover, by setting the direct connection path, the loss on the path between the ground pin and the ground terminal can be avoided to the greatest extent, thereby ensuring the radio frequency performance of the antenna connected to the first connection base.

In one of the embodiments, the step 1104 of controlling the ground pin of the first connection socket to be connected to the ground terminal through the filter path includes: obtaining the signal frequency band of the clutter signal; when the clutter signal When the signal frequency band of the clutter signal is high frequency, the ground pin of the first connecting seat is controlled to be connected to the ground terminal through the low-pass filter unit on the filter path; when the signal frequency band of the clutter signal is low frequency, The ground pin controlling the first connection socket is connected to the ground terminal through the high-pass filter unit on the filter path. In this embodiment, when the clutter signal needs to be filtered, by first obtaining the signal frequency band of the clutter signal, an appropriate filter unit can be selected correspondingly, thereby realizing accurate filtering of the clutter signal, thereby providing a More flexible and accurate filtering methods.

The embodiment of the present application also provides a control device for electronic equipment, including a distance acquisition module and a path selection module. The distance obtaining module is used to obtain the first distance between the first antenna and the signal cable, one end of the signal cable is connected to the first connecting seat in the circuit board assembly through the second connecting seat, and the first connecting seat A filter path and a direct connection path are configured between the ground pin and the ground terminal, and a filter module is connected to the filter path. The path selection module is used to control the ground pin of the first connection socket to be connected to the ground terminal through the filter path when the first distance is less than the distance threshold, so as to filter out the clutter generated on the signal cable Signal: when the first distance is greater than or equal to the distance threshold, control the ground pin of the first connection seat to be connected to the ground terminal through the direct connection path. The division of each module in the control device of the electronic equipment is only for illustration. In other embodiments, the control device of the electronic equipment can be divided into different modules according to the needs, so as to complete all or part of the control device of the electronic equipment. Function. For specific limitations on the control apparatus for electronic equipment, reference may be made to the above-mentioned limitations on the control method for electronic equipment, which will not be repeated here. Each module in the control device of the above-mentioned electronic equipment may be fully or partially realized by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.

The embodiment of the present application also provides a computer-readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions, when the computer-executable instructions are executed by one or more processors, causing the processors to perform the steps of the control method of the electronic device . Any reference to memory, storage, database, or other medium as used herein may include non-volatile and/or volatile memory. Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in many forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Synchlink DRAM (SLDRAM), Memory Bus (Rambus) Direct RAM (RDRAM), Direct Memory Bus Dynamic RAM (DRDRAM), and Memory Bus Dynamic RAM (RDRAM).

In one embodiment, the first connection socket 200 is a board-to-board connector, and the noise signal is a signal generated by the board-to-board connector. Specifically, the high-speed signal in the board-to-board connector will increase the electromagnetic interference (Electro-magnetic Interference, EMI) noise emitted by the connecting part in the connector, and the connecting part refers to the connection point between the first connecting seat and the second connecting seat . It can be understood that the thickness of the mobile terminal is generally small, and the height of the board-to-board connector with the electromagnetic interference shielding member is generally greater than the thickness of the mobile terminal. Therefore, it is difficult to apply a board-to-board connector with an electromagnetic interference shielding member to a mobile terminal. In this embodiment, by setting the filter module 300, the electromagnetic interference signal generated by the board-to-board connector can be effectively filtered without increasing the thickness of the board-to-board connector, thereby reducing the number of board-to-board connectors. The influence of the radio frequency performance of the first antenna 600 further improves the communication quality of the electronic device.

The embodiment of the present application also provides an electronic device, including the above-mentioned circuit board assembly, the second connection base 400 , a camera and a first antenna 600 , the distance between the first antenna 600 and the first connection base 200 The distance is less than the distance threshold. Wherein, the second connecting seat 400 is connected with the first connecting seat 200 , and the second connecting seat 400 and the first connecting seat 200 correspond to a mating female seat and a male head respectively. That is, the first connection seat 200 is a female seat of the board-to-board connector, and the second connection seat 400 is a male head of the board-to-board connector. The female seat of the board-to-board connector is provided with multiple signal jacks, and the male head of the board-to-board connector is provided with multiple pin plugs. After the female seat and the male head are assembled, the multiple pin plugs correspond one by one. The ground is embedded in multiple signal jacks. The camera and the second connecting seat 400 are arranged on the same sub-board, and the board-to-board connector is used to realize the stable connection between the sub-board and the main board body. The camera is connected to the second connection socket 400 for transmitting camera signals to the main board body through the second connection socket 400 and the first connection socket 200 in sequence. Wherein, the camera may be but not limited to a front camera and a rear camera. In this embodiment, a camera, the second connection base 400 and the first connection base 200 are arranged on the signal transmission path. By setting the filter module 300 , the clutter signal generated at the connection between the first connection base 200 and the second connection base 400 can be filtered out, thereby suppressing the influence of the clutter signal on the radio frequency performance of the first antenna 600 .

The embodiment of the present application also provides an electronic device, including the above-mentioned circuit board assembly, the second connection base 400, the third antenna and the first antenna 600, the connection between the first antenna 600 and the first connection base 200 The distance between them is less than the distance threshold. Wherein, the second connecting seat 400 is connected with the first connecting seat 200 , and the second connecting seat 400 and the first connecting seat 200 correspond to a mating female seat and a male head respectively. That is, the first connection seat 200 is a female seat of the board-to-board connector, and the second connection seat 400 is a male head of the board-to-board connector. The female seat of the board-to-board connector is provided with multiple signal jacks, and the male head of the board-to-board connector is provided with multiple pin plugs. After the female seat and the male head are assembled, the multiple pin plugs correspond one by one. The ground is embedded in multiple signal jacks. The third antenna and the second connection seat 400 are disposed on the same antenna board, and the board-to-board connector is used to achieve a stable connection between the antenna board and the main board body. The third antenna is connected to the second connection socket 400 for transmitting a third radio frequency signal to the motherboard body via the second connection socket 400 and the first connection socket 200 in sequence. In this embodiment, the third antenna, the second connection socket 400 and the first connection socket 200 are arranged on the signal transmission path. By setting the filter module 300 , the clutter signal generated at the connection between the first connection base 200 and the second connection base 400 can be filtered out, thereby suppressing the influence of the clutter signal on the radio frequency performance of the first antenna 600 .

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the scope of the patent for the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the embodiments of the present application, and these all belong to the protection scope of the embodiments of the present application. Therefore, the scope of protection of the embodiment patent of this application should be based on the appended claims.

Claims

A circuit board assembly, comprising:

The motherboard body is configured with a ground terminal;

The first connecting seat is connected to the main board body, the first connecting seat is configured with a ground pin, the first connecting seat is used to connect to a target device, and the first connecting seat is connected to the target device. Form a signal transmission path between;

A filter module is connected to the ground pin of the first connecting seat and the ground terminal of the main board body respectively, and the filter module is used to filter out the clutter signal generated on the signal transmission path.
According to the circuit board assembly according to claim 1, the first connecting seat is an antenna seat, and the antenna seat is configured with a plurality of ground pins, the plurality of ground pins are connected to each other, and the plurality of ground pins are connected to each other. One of the ground pins is connected to the filter module, and the remaining ground pins are isolated from the ground terminal.
The circuit board assembly according to claim 2, the antenna seat further comprises a seat body, a signal terminal, and a signal pin;

The signal pins and the ground pins are used to connect with the pads on the motherboard main body, the signal terminals are used to connect signal cables, and the signal cables are used to pass the received radio frequency signals through the The signal terminal and the signal pin are transmitted to the main board body.
According to the circuit board assembly according to claim 3, the signal pins and the grounding pins are both arranged on the bottom of the seat body, and the bottom of the seat body faces the main board body when the seat body is assembled side.
The circuit board assembly according to claim 4, wherein the signal terminals are disposed on the top of the base body, and the top is disposed opposite to the bottom.
The circuit board assembly according to claim 3, said antenna mount is configured with three said ground pins.
According to the circuit board assembly according to claim 1, the main board body is divided into the pad area of the first connection seat and the pad area of the filter module, and each pad area is respectively provided with a plurality of pads to connect the first connection socket or connect the filter module.
The circuit board assembly according to claim 1, the first connection seat is a board-to-board connector, and the noise signal is a signal generated by the board-to-board connector.
An electronic device comprising:

A circuit board assembly as claimed in claim 1 or 7;

first antenna;

a second connecting seat connected to the first connecting seat;

A signal cable is connected to the second connection socket, and the clutter signal is a signal generated by the signal cable.
According to the electronic device according to claim 9 , the second connecting socket and the first connecting socket are respectively one-to-one corresponding female sockets and male sockets.
According to the electronic device according to claim 9, a filtering path and a direct connection path are arranged between the ground pin of the first connection seat and the ground terminal of the main board body, and the filtering module is connected to the filtering path ;

Wherein, when the distance between the first antenna and the signal cable is less than a distance threshold, the ground pin of the first connection seat is used to connect to the ground terminal of the motherboard body through the filter path; When the distance between the first antenna and the signal cable is greater than or equal to the distance threshold, the ground pin of the first connection socket is used to connect to the main board body through the direct connection path ground terminal.
The electronic device according to claim 11, the filter module comprising:

A high-pass filter unit, connected to the ground terminal, is used to conduct high-frequency signals and block low-frequency signals;

a low-pass filter unit, connected to the ground terminal, for conducting low-frequency signals and blocking high-frequency signals;

A frequency band selection unit, the first end of the frequency band selection unit is connected to the ground pin of the first connection socket, and the two second ends of the frequency band selection unit are respectively connected to the high-pass filter unit and the low-pass filter The units are connected in one-to-one correspondence, and the frequency band selection unit is used to select and conduct the signal transmission path between the first end and any second end.
The electronic device according to claim 11, further comprising:

a second antenna, configured to send and receive a second radio frequency signal, and the distance between the second antenna and the signal cable is greater than the distance threshold;

Wherein, the first antenna is used to send and receive a first radio frequency signal, and the difference between the center frequency of the first radio frequency signal and the center frequency of the clutter signal is greater than the center frequency of the second radio frequency signal and the center frequency of the clutter signal. The difference between the center frequencies of the clutter signals.
The electronic device according to claim 9, said first antenna comprising:

The first radiator is provided with a grounding point for sending and receiving radio frequency signals;

The antenna matching network is respectively connected to the ground point of the first radiator and the ground terminal, and the antenna matching network matches the impedance of the first radiator.
The electronic device according to claim 9, the first antenna is used to support signal transceiving in the GPS L5 frequency band.
According to the circuit board assembly according to claim 9, the target device connected to the circuit board assembly is one of a radio frequency device, a front camera and a rear camera.
A method for controlling an electronic device, comprising:

Obtain a first distance between the first antenna and the signal cable, one end of the signal cable is connected to the first connection seat in the circuit board assembly through the second connection seat, the ground pin of the first connection seat and A filter path and a direct connection path are configured between the ground terminals, and a filter module is connected to the filter path;

When the first distance is less than the distance threshold, control the ground pin of the first connection socket to be connected to the ground terminal through the filter path, so as to filter out the clutter signal generated on the signal cable; when the When the first distance is greater than or equal to the distance threshold, the ground pin of the first connecting seat is controlled to be connected to the ground terminal through the direct connection path.
According to the control method according to claim 17, the filter module includes a high-pass filter unit and a low-pass filter unit, and the control of connecting the ground pin of the first connection socket to the ground terminal through the filter path includes: obtaining the signal frequency band of the clutter signal;

When the signal frequency band of the clutter signal is high frequency, control the ground pin of the first connection socket to be connected to the ground terminal through the low-pass filter unit on the filter path;

When the signal frequency band of the clutter signal is low frequency, control the ground pin of the first connecting socket to be connected to the ground terminal through the high-pass filter unit on the filter path.
According to the control method according to claim 18, the high frequency band of the clutter signal is 1710MHz-1880MHz, and the low frequency band of the clutter signal is 200KHz-300KHz.
An electronic device comprising:

A circuit board assembly as claimed in any one of claims 9 to 19;

first antenna;

a second connecting seat connected to the first connecting seat;

The camera is connected to the second connection socket, and is used to transmit camera signals to the main board body through the second connection socket and the first connection socket in sequence.