Electronic device

Abstract

The invention discloses electronic equipment, and the electronic equipment comprises an antenna which is provided with a first metal connecting piece at a feed position; the first end of the coaxial cable is connected with a printed circuit board (PCB) of the electronic equipment, the second end of the coaxial cable is connected with the second metal connecting piece, and the second metal connecting piece 201 is connected with the first metal connecting piece in a matched mode.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to an electronic device. Background Art

[0002] With the development of the mobile communications industry, the network function requirements of mobile phones are getting higher and higher. For example, to support 4*4 Multiple In Multiple Out (MIMO), the sounding reference signal (SRS) of the 5G New Radio (NR) frequency band must be transmitted in turn on four antennas. With the increase of various functions of mobile phones, such as diversity antenna function, multi-antenna switching function, dual-card function, etc., the number of antennas is increasing and the architecture is becoming more and more complex. Antenna layout design plays a very important role in the performance of the whole machine.

[0003] In related technologies, antennas are generally arranged at the top and bottom of the mobile phone. Since the RF front-end devices are generally located on the main board, the antenna at the bottom needs to be connected to the coaxial line through a separately set antenna board, and the antenna board needs to be fixed with screws. This antenna connection solution will occupy a large space inside the mobile phone. Summary of the invention

[0004] An embodiment of the present application provides an electronic device to solve the problem that the existing antenna connection solution occupies a large space inside the mobile phone.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an electronic device, including:

[0007] An antenna 100, wherein a first metal connector 101 is provided at a feeding position of the antenna 100;

[0008] A coaxial cable 200 , wherein a first end of the coaxial cable 200 is connected to a printed circuit board PCB of an electronic device, and a second end of the coaxial cable is connected to a second metal connector 201 , and the second metal connector 201 is matched and connected to the first metal connector 101 .

[0009] In this way, in the above scheme of the present application, a first metal connector is set at the feeding position of the antenna, and a second metal connector is set at the second end of the coaxial cable. The purpose of connecting the antenna to the coaxial cable is achieved by matching and connecting the first metal connector and the second metal connector, without the need to set up components such as the antenna board in the traditional antenna connection scheme, thereby effectively saving space inside the mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 One of the antenna connection schematic diagrams of the embodiment of the present application is shown;

[0011] Figure 2 A schematic diagram showing the structure of a coaxial cable in an embodiment of the present application;

[0012] Figure 3 A schematic diagram showing the structure of a metal shell of a radio frequency socket in an embodiment of the present application;

[0013] Figure 4 A schematic diagram showing the structure of a radio frequency base in an embodiment of the present application;

[0014] Figure 5 A second schematic diagram showing antenna connection according to an embodiment of the present application;

[0015] Figure 6 A schematic diagram showing an antenna test structure in an embodiment of the present application;

[0016] Figure 7 The third schematic diagram showing the antenna connection of the embodiment of the present application;

[0017] Figure 8 A fourth schematic diagram showing antenna connection of an embodiment of the present application;

[0018] Fig. 9 A schematic diagram showing the connection of antennas in the related art;

[0019] Fig.10 One of the specific implementation schematic diagrams showing the antenna connection in the embodiment of the present application;

[0020] Fig.11 A second schematic diagram showing a specific implementation of antenna connection in an embodiment of the present application;

[0021] Fig.12 A schematic diagram showing the distribution of antennas in a conventional design;

[0022] Fig.13 One of the distribution diagrams of antennas in an embodiment of the present application is shown;

[0023] Fig.14 The second schematic diagram shows the distribution of antennas in the embodiment of the present application. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0025] like Figure 1 As shown, an embodiment of the present application provides an electronic device, including:

[0026] An antenna 100, wherein a first metal connector 101 is provided at a feeding position of the antenna 100;

[0027] A coaxial cable 200 , wherein a first end of the coaxial cable 200 is connected to a printed circuit board (PCB) of an electronic device, and a second end of the coaxial cable is connected to a second metal connector 201 , and the second metal connector 201 is matched and connected to the first metal connector 101 .

[0028] Optionally, the antenna 100 is disposed on a middle frame of the electronic device, and the antenna can also be described as a middle frame antenna. The middle frame can be understood as a housing of the electronic device. Optionally, the first metal connector 101 is a rivet.

[0029] Alternatively, if Figure 2 As shown, the coaxial cable 200 in the embodiment of the present application includes: a central conductor 2001 , an insulating medium 2003 , a shielding layer 2002 and a protective layer 2004 .

[0030] The insulating medium 2003 is sleeved on the surface of the central conductor 2001 , the shielding layer 2002 is sleeved on the surface of the insulating medium 2003 , and the protective layer 2004 is sleeved on the surface of the shielding layer 2002 .

[0031] The center conductor 2001 is used to transmit radio frequency signals. According to the dielectric constants of different insulating media 2003, the dimensions of the shielding layer 203 and the center conductor 2001 can be designed to be a coaxial cable suitable for radio frequency transmission.

[0032] Optionally, the antenna 100 is disposed on a middle frame of an electronic device.

[0033] Optionally, the first end of the coaxial cable 200 is connected to a metal shell of a radio frequency socket, and the metal shell is buckled on the radio frequency socket of the PCB.

[0034] like Figure 3 As shown, the metal shell includes a metal connecting tube 801 and a buckle structure 802, wherein the surface of the metal connecting tube 801 is provided with a thread structure, and the metal connecting tube 801 is connected to the shielding layer 2002 of the coaxial cable 200; the buckle structure 802 includes a metal clip 8021 and an insulating medium structure 8022, and the metal clip 8021 is connected to the central conductor 2001 of the coaxial cable 200. Figure 4As shown, the RF socket includes a connecting portion 901 and a buckling portion 902 , the buckling portion 902 is matched and connected with the buckling structure 802 , and the connecting portion 901 is connected with the metal clip 8021 .

[0035] Optionally, a radio frequency front-end component and a transceiver are disposed on the PCB, and the first end of the coaxial cable 200 is connected to the PCB to achieve the purpose of transmitting the radio frequency signal to the coaxial cable 200 .

[0036] In this embodiment, a first metal connector 101 is added at the feeding position of the antenna 100, and the coaxial cable 200 can be directly connected to the first metal connector 101, thereby achieving the purpose of feeding the radio frequency signal into the antenna.

[0037] In the embodiment of the present application, a first metal connector 101 is set at the feeding position of the antenna 100, and a second metal connector 201 is set at the second end of the coaxial cable 200. The first metal connector 101 is matched and connected with the second metal connector 201, thereby achieving the purpose of connecting the antenna 100 to the coaxial cable 200 without setting components such as an antenna board in a traditional antenna connection solution, thereby effectively saving space inside the mobile phone.

[0038] In addition, in the traditional antenna connection scheme, since the RF signal passes through the antenna plate and the spring clip before reaching the antenna, it undergoes multiple transfers in the middle, which will increase additional insertion loss. In the above embodiment, there is no need to set up an antenna plate, which can effectively reduce the insertion loss caused by the RF routing. Moreover, in the traditional scheme, the antenna plate needs to be locked by screws. If the screws are not locked or the antenna is not welded with gold-plated spring clips or rivets, there may be problems with grounding reliability. In the above embodiment of the present application, there is no need to set up the above-mentioned antenna plate and screws. The first metal connector 101 set up between the coaxial cable 200 and the antenna 100 can effectively improve the contact reliability and save a large space structure, thereby helping to increase the battery capacity.

[0039] Optionally, as an implementation method, Figure 1 As shown, the second metal connector 201 is provided with a hollow cavity and a receiving cavity 2011, and the second end of the coaxial cable 200 is passed through the hollow cavity; the first end of the first metal connector 101 is clamped in the receiving cavity 2011, and the second end of the first metal connector 101 is connected to the feeding position of the antenna 100.

[0040] Optionally, the second end of the coaxial cable 200 is inserted into the hollow cavity and then connected to the outer wall of the accommodating cavity 2011 by welding or pressing.

[0041] Optionally, the hollow cavity is a cylindrical cavity, and the second end of the coaxial cable 200 passes through the hollow cavity and is connected to the outer wall of the accommodating cavity by welding or pressing, thereby realizing the transmission of the RF antenna between the coaxial cable 200 and the second metal connector 201.

[0042] Optionally, the central conductor 2001 of the second end of the coaxial cable 200 is connected to the outer side wall of the accommodating cavity 2011 .

[0043] In the embodiment of the present application, after the insulating material of the second end of the coaxial cable 200 passes through the hollow cavity, the central conductor 2001 of the second end is connected to the outer wall of the accommodating cavity 2011 by welding or pressing, thereby realizing the radio frequency signal transmission between the coaxial cable 200 and the second metal connector 201.

[0044] Optionally, the first end of the first metal connector 101 is clamped in the accommodating cavity 2013, thereby achieving transmission of radio frequency signals between the second metal connector and the antenna.

[0045] The connection between the coaxial cable 200 and the antenna is achieved through the second metal connector 201. This connection method does not require additional antenna panels, screws and other structures, effectively saving the layout space of the electronic device, thereby achieving flexible antenna layout design.

[0046] Optionally, in this implementation, a grounding element 202 is provided on the shielding layer 2002 of the coaxial cable 200;

[0047] The grounding element 202 is electrically connected to the housing 700 of the electronic device, or is electrically connected to the PCB of the electronic device.

[0048] Here, the grounding element 202 is electrically connected to the housing or PCB of the electronic device to achieve the purpose of grounding the grounding element.

[0049] Exemplarily, the grounding element 202 may be a grounding ring, a grounding ear, or a conductive cloth.

[0050] When the grounding element 202 is a grounding ring, the grounding ring is connected to the PCB through a grounding wire clamp, or is connected to the housing of the electronic device; when the grounding element 202 is a grounding ear, the grounding ear is connected to the PCB or the housing of the electronic device through a screw; when the grounding element 202 is a conductive cloth, the conductive cloth is connected to the PCB or the housing of the electronic device.

[0051] For example, the protective layer of the coaxial cable 200 is removed near the second metal connector 201 to expose the shielding layer, a grounding ring is added to the outer surface of the shielding layer as the grounding point of the RF line, and the grounding ring is connected to the PCB or the shell of the electronic device through a grounding wire clamp.

[0052] Alternatively, if Figure 5 and Figure 6 As shown, the implementation also includes:

[0053] A first flexible printed circuit (FPC) 300 is connected to the coaxial cable 200 and the antenna 100 respectively, and the first FPC 300 includes a first antenna matching circuit 301 , and the first antenna matching circuit 301 is used to adjust the radiation efficiency of the antenna 100 .

[0054] Optionally, the first antenna matching circuit 301 in the embodiment of the present application includes at least one matching element, and the matching element is an inductor or a capacitor. Figure 6 As shown, after the RF test socket 1001 is connected to the coaxial cable 200, the RF test socket 1002 is connected to the RF matching circuit 1003, and the RF matching circuit 1003 is connected to the RF circuit 1004, the antenna is debugged. Exemplarily, the matching element includes a first matching element S1, a second matching element P1 and a third matching element P2, wherein the first matching element S1 is connected in series with the center conductor and then connected to the second metal connector 201, and the second matching element P1 and the third matching element P2 are respectively connected to the shielding layer, that is, Figure 6 The place shown in.

[0055] In order to achieve better performance of the antenna, it is usually necessary to add an antenna matching circuit for adjustment. The impedance of the antenna in a specific frequency band is adjusted through the capacitance and inductance of the antenna matching circuit to obtain the desired performance.

[0056] Optionally, the second metal connector 201 is connected to the first connection end of the first antenna matching circuit 301, the second connection end of the first antenna matching circuit 301 is connected to the central conductor 2001 of the coaxial cable 200, and the third connection end of the first antenna matching circuit 301 is connected to the shielding layer 2002 of the coaxial cable 200.

[0057] In an embodiment of the present application, the first FPC including the first antenna matching circuit is added to the second end of the coaxial cable, and the second metal connector, the shielding layer of the coaxial cable and the center conductor are connected to the first antenna matching circuit by welding, so as to adjust the antenna through the capacitance and inductance of the first antenna matching circuit to obtain the desired performance.

[0058] Optionally, as an implementation, the second end of the coaxial cable 200 is connected to the second metal connector 201 via a second flexible circuit board FPC400. Figure 7 and Figure 8 As shown, the electronic device further includes:

[0059] A second flexible circuit board FPC400, wherein the second FPC400 is connected to the second end of the coaxial cable 200 and the second metal connector 201 respectively;

[0060] The second FPC 400 includes a second antenna matching circuit 401 , and the second antenna matching circuit is used to adjust the radiation efficiency of the antenna 100 .

[0061] The second antenna matching circuit in the embodiment of the present application includes at least one matching element, and the matching element is an inductor or a capacitor.

[0062] In order to achieve better performance of the antenna, it is usually necessary to add an antenna matching circuit for adjustment. The impedance of the antenna in a specific frequency band is adjusted through the capacitance and inductance of the antenna matching circuit to obtain the desired performance.

[0063] Alternatively, if Figure 7 and Figure 8 As shown, the second metal connector 201 is provided with a receiving cavity 2011 , the first end of the first metal connector 101 is clamped in the receiving cavity 2011 , and the second end of the first metal connector 101 is connected to the feeding position of the antenna 100 .

[0064] Optionally, the central conductor of the second end of the coaxial cable 200 is welded to the second FPC, and the shielding layer 2002 is welded to the ground wire of the second FPC. Through the matching connection between the first metal connector 101 and the second metal connector 201, the RF signal in the coaxial cable is transmitted to the second metal connector after passing through the antenna matching circuit, thereby realizing the RF signal transmission between the coaxial cable and the antenna.

[0065] Optionally, the ground wire of the second FPC is electrically connected to a housing of the electronic device or to a PCB.

[0066] Optionally, the electronic device further includes: a third metal connector 500, wherein the third metal connector 500 is connected to the second FPC 400;

[0067] The fourth metal connector 600 is electrically connected to the housing 700 of the electronic device, and the fourth metal connector 600 is matched and connected to the third metal connector 500 .

[0068] Optionally, the structure of the third metal connector 500 is a metal buckle structure, and the structure of the fourth metal connector 600 is the same as that of the first metal connector.

[0069] Optionally, the third metal connector 500 is connected to a ground line of the second FPC 400 .

[0070] In some embodiments of the present application, the grounding connection of the second metal connector is achieved through the matching connection between the third connector 5050 and the fourth metal connector 600.

[0071] Optionally, in the embodiment of the present application, a protruding spring piece 2012 is disposed in the accommodating cavity 2011 , and the protruding spring piece 2012 is abuttingly connected to the first end portion.

[0072] Since the antenna feed position is a key electrical connection point, if the shrapnel is directly connected to the aluminum alloy of the middle frame, there may be problems with unreliable electrical connection, which will cause passive inter-modulation (PIM). Generally, gold-plated sheets or rivets are welded at these grounding points. However, during long-term use, the shrapnel and the gold-plated sheet will produce relative friction, and electrical connection problems may still occur. Because the shrapnel is a movable structure, in traditional designs, the rivet point and the gold-plated sheet need to be larger than the contact point area to ensure that the shrapnel on the antenna board can hit the rivet and the gold-plated sheet. In addition, since the soldering point of the gold-plated sheet must avoid the contact position of the shrapnel, sufficient structural space needs to be reserved for welding, and the gold-plated sheet will be larger than the rivet point area.

[0073] In the embodiment of the present application, the first end of the first metal connector 101 is clamped in the accommodating cavity 2011, which can effectively avoid the relative movement between the first metal connector and the second metal connector, effectively ensure the connection between the first metal connector and the second metal connector, and by providing a protruding spring piece 2012 in the accommodating cavity 2013, it can further ensure that the first metal connector 101 and the second metal connector achieve reliable electrical contact.

[0074] Optionally, the first metal connecting member 101 is arranged to protrude from the plane where the antenna 100 is located.

[0075] In the embodiment of the present application, the first end of the first metal connector 101 is raised at a certain height relative to the plane where the antenna 100 is located, and the first end is directly clamped in the above-mentioned accommodating cavity 2011 to achieve the functions of fixing and feeding the antenna. This can effectively avoid direct connection between the antenna 100 and the first metal connector 101, thereby avoiding the problem of unreliable point connection.

[0076] like Fig. 9As shown, in conventional design, the antenna 100 is designed at the bottom of the electronic device, one end of the coaxial cable 200 is connected to the main board 605, and the other end of the coaxial cable 200 is connected to the antenna small board 603. The antenna small board 603 and the antenna 100 are connected by a spring 604, and the antenna small board 603 and the antenna 100 are fixedly connected by a screw 606. It can be seen that it is basically difficult to connect the antenna in the middle position of the middle frame 602 in conventional design, because the battery 607 is generally in the middle position. If the antenna is to be designed at this position, it is necessary to add an antenna small board, which will occupy a large battery space.

[0077] like Fig.10 As shown, a schematic diagram of a specific implementation of the antenna connection of the present application is given. In this embodiment, the antenna 100 is deployed at the bottom of the middle frame, and the connection between the coaxial cable 200 and the antenna 100 can be achieved by simply adding a first metal connector 101 at the feeding position of the antenna 100. Specifically, one end of the coaxial cable is connected to the mainboard 605, the mainboard 605 is connected to the middle frame 602 by screws 606, and the battery 607 is connected to the mainboard 605. The mainboard 605 can also be described as a PCB.

[0078] like Fig.11 As shown, another specific implementation schematic diagram of the antenna connection of the present application is given. In this embodiment, the antenna 100 is deployed in the middle position of the middle frame, and the connection between the coaxial cable 200 and the antenna 100 can be achieved by adding a first metal connector 101 at the feeding position of the antenna 100. Specifically, one end of the coaxial cable is connected to the mainboard 605, the mainboard 605 is connected to the middle frame 602 by screws 606, and the battery 607 is connected to the mainboard 605. The mainboard 605 can also be described as a PCB.

[0079] For example, Fig.12 As shown, in conventional multi-antenna designs, multiple antennas are generally not concentrated in one area, but are scattered in various locations. However, the transceiver (TR) and the RF front-end module are generally only arranged in one location on the PCB board, such as near the 11# antenna and the 12# antenna. The RF front-end group and the transceiver are close to some of the antennas, which will result in some of the antennas having smaller front-end insertion loss and better performance, while other antennas are routed through the PCB board. Due to the long routing, the insertion loss is larger and the performance is poor. Generally, antennas that are far away from the RF front-end group and the transceiver reduce insertion loss by adding coaxial lines, such as the 31# antenna and the 41# antenna. As the requirements for the network become higher and higher, reducing routing insertion loss is also the direction that RF is working towards.

[0080] Through the solution of the present application, it is only necessary to add a first metal connector at the feeding position of the middle frame antenna to achieve the connection between the coaxial cable and the antenna. Fig.13As shown, there is no need for multiple transfers, which effectively reduces insertion loss and effectively saves the deployment space of electronic equipment, avoiding affecting other components, such as the volume of the sound cavity.

[0081] In addition, since the stack of mobile phones is generally a motherboard on the top and a sub-board on the bottom, the antennas are fed through the shrapnel on the motherboard and sub-board, so most antennas are arranged around the motherboard and sub-board. As the number of antennas increases, there is no room for more antennas around the motherboard and sub-board. In addition, considering the gaming scenario, adding antennas on both sides of the phone (such as 51#ANT and 61#ANT) will greatly help solve the impact of hands on the antenna when playing games. However, since there is a battery in the middle of the phone, and the demand for mobile phone battery capacity is also very strong, and adding antennas on both sides requires a large structural space to solve the antenna access problem because there is no PCB board, which also has a huge impact on the structural space of the mobile phone battery.

[0082] For example, Fig.14 As shown above Fig.11 The antennas deployed in the middle position of the middle frame may be 51# antenna (51#ANT) and 61# antenna (61#ANT).

[0083] According to the solution of the present application, only a first metal connector needs to be added to the feeding position of the middle frame antenna to achieve the connection between the coaxial cable and the antenna, which effectively saves the space structure in the electronic device, thereby allowing for flexible antenna layout design.

[0084] The solution of the embodiment of the present application changes the traditional solution that requires the antenna to be fed through an antenna plate and an antenna shrapnel, and achieves the purpose of directly connecting the antenna with a coaxial cable. It has the characteristics of simple structure, small space occupation, reliable connection, and the ability to feed the RF signal into the antenna at any position of the electronic device.

[0085] Optionally, the electronic device includes but is not limited to: terminal devices such as mobile phones, tablet computers, wearable devices, or other electronic devices with antenna devices, etc., and the embodiments of the present application are not limited thereto.

[0086] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0087] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0088] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0089] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications are also within the scope of protection of the present application.

Claims

1. An electronic device, characterized in that: include: An antenna, wherein a first metal connecting member is provided at a feeding position of the antenna; A coaxial cable, wherein a first end of the coaxial cable is connected to a printed circuit board PCB of an electronic device, a second end of the coaxial cable is connected to a second metal connector, and the second metal connector is matched and connected to the first metal connector.

2. The electronic device according to claim 1, characterized in that: The second metal connector is provided with a hollow cavity and a receiving cavity, and the second end of the coaxial cable is passed through the hollow cavity; the first end of the first metal connector is clamped in the receiving cavity, and the second end of the first metal connector is connected to the feeding position of the antenna.

3. The electronic device according to claim 2, characterized in that: A grounding element is provided on the shielding layer of the coaxial cable; The grounding element is electrically connected to a housing of the electronic device, or is electrically connected to a PCB of the electronic device.

4. The electronic device according to claim 2, characterized in that: Also includes: A first flexible circuit board (FPC) is connected to the coaxial cable and the antenna respectively, wherein the first FPC comprises a first antenna matching circuit, and the first antenna matching circuit is used to adjust the radiation efficiency of the antenna.

5. The electronic device according to claim 4, characterized in that: The second metal connector is connected to the first connection end of the first antenna matching circuit, the second connection end of the first antenna matching circuit is connected to the central conductor of the coaxial cable, and the third connection end of the first antenna matching circuit is connected to the shielding layer of the coaxial cable.

6. The electronic device according to claim 1, characterized in that: Also includes: A second flexible circuit board FPC, wherein the second FPC is connected to the second end of the coaxial cable and the second metal connector respectively; The second FPC includes a second antenna matching circuit, and the second antenna matching circuit is used to adjust the radiation efficiency of the antenna.

7. The electronic device according to claim 6, characterized in that: The second metal connector is provided with a receiving cavity, the first end of the first metal connector is clamped in the receiving cavity, and the second end of the first metal connector is connected to the feeding position of the antenna.

8. The electronic device according to claim 7, characterized in that: Also includes: a third metal connector, the third metal connector being connected to the second FPC; A fourth metal connector is electrically connected to a housing of the electronic device, and the fourth metal connector is matched and connected to the third metal connector.

9. The electronic device according to claim 2 or 7, characterized in that: A protruding spring piece is disposed in the accommodating cavity, and the protruding spring piece is abutted and connected with the first end portion.

10. The electronic device according to claim 1, characterized in that: The first metal connecting member is protruded from the plane where the antenna is located.

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