Radio frequency device comprising three-dimensional antenna

Abstract

The utility model discloses a radio frequency device comprising a three-dimensional antenna, and relates to the technical field of electronic assembly, the radio frequency device is characterized in that the surface of a three-dimensional antenna support is provided with an antenna pattern, a connecting piece is arranged at the bottom of the three-dimensional antenna support and / or the surface of a PCB, the three-dimensional antenna support is connected to the surface of the PCB through the connecting piece, the PCB and the three-dimensional antenna support are both arranged in a shell, and the PCB and the three-dimensional antenna support are arranged in the shell. The opening of the shell is detachably connected with the cover body, and a sealing ring is arranged at the joint of the shell and the cover body. The bottom of the three-dimensional antenna support and / or the surface of the PCB are / is provided with the connecting piece, the three-dimensional antenna support is connected to the surface of the PCB, the situation that metal pins stretch out of the surface of the PCB is avoided, the consistency of signals can be guaranteed, and the signal quality is improved; the shell plays a role in protecting the PCB and the three-dimensional antenna support, and the sealing ring is arranged at the joint of the shell and the cover body, so that the PCB and the three-dimensional antenna support are effectively prevented from being influenced by external environmental factors, the stability and reliability of the device are improved, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of electronic assembly, and particularly to a radio frequency device including a three-dimensional antenna. Background Art

[0002] Antennas on radio frequency products play a crucial role, and their main functions include signal transmission, signal reception, impedance matching, directivity control, etc. On traditional printed circuit boards (PCBs), the layout of planar antennas occupies a relatively large area of the PCB. Since the signals of planar antennas are not as good as those of three-dimensional antennas, three-dimensional antennas are often used. Currently, metal pins are mainly inserted into the PCB, that is, the three-dimensional antenna structure is realized by means of via soldering. It is very difficult to control the lengths of the pins penetrating the PCB from the surface of the PCB, which will result in very poor signal consistency.

[0003] Therefore, how to ensure signal consistency and improve signal quality is a problem that those skilled in the art need to solve. Summary of the Utility Model

[0004] The purpose of the present application is to provide a radio frequency device including a three-dimensional antenna, which is used to solve the problem that when the three-dimensional antenna structure is realized by means of via soldering, it is very difficult to control the lengths of the pins penetrating the PCB from the surface of the PCB, which will result in very poor signal consistency.

[0005] To solve the above technical problems, the present application provides a radio frequency device including a three-dimensional antenna, comprising: a PCB, a three-dimensional antenna bracket, a connecting member, a housing, a sealing ring and a cover body;

[0006] An antenna pattern is provided on the surface of the three-dimensional antenna bracket, and the connecting member is disposed at the bottom of the three-dimensional antenna bracket and / or on the surface of the PCB, so that the three-dimensional antenna bracket is connected to the surface of the PCB through the connecting member. Both the PCB and the three-dimensional antenna bracket are disposed in the housing, and the opening of the housing is detachably connected to the cover body, and the sealing ring is provided at the connection between the housing and the cover body.

[0007] Optionally, the connecting member is a solder pad, the solder pad is disposed at the bottom of the three-dimensional antenna bracket, and the three-dimensional antenna bracket is soldered to the surface of the PCB in an SMT manner through the solder pad.

[0008] Optionally, the number of the solder pads is multiple, and the multiple solder pads are evenly distributed at the bottom of the three-dimensional antenna bracket.

[0009] Optionally, a plurality of positioning posts are further provided at the bottom of the three-dimensional antenna bracket, and positioning grooves are provided on the surface of the PCB. The positioning posts and the positioning grooves cooperate to position the three-dimensional antenna bracket at a set position on the surface of the PCB.

[0010] Optionally, the connection is a spring pin. The spring pin is connected to the surface of the PCB. A gold finger is provided at the bottom of the three-dimensional antenna bracket, and the top of the three-dimensional antenna bracket is detachably connected to the inner wall of the housing, so that the spring pin abuts against the gold finger.

[0011] Optionally, ribs are provided at the top of the three-dimensional antenna bracket, and positioning grooves matching the ribs are provided on the inner wall of the housing. The three-dimensional antenna bracket is slidably connected to the housing through the ribs and the positioning grooves.

[0012] Optionally, the spring pin includes a base, a needle tube, a spring and a needle tip. The bottom of the needle tube is connected to the base, the base is welded to the surface of the PCB, the spring is arranged in the needle tube, one end of the spring is connected to the bottom of the needle tube, the other end of the spring is connected to the first end of the needle tip, and the second end of the needle tip extends out of the needle tube through the top opening of the needle tube.

[0013] Optionally, the top of the needle tip is an arc surface.

[0014] Optionally, a hollow cavity is provided inside the three-dimensional antenna bracket.

[0015] Optionally, the number of the positioning posts is two, and the two positioning posts are respectively arranged at both ends of the diagonal line of the bottom surface of the three-dimensional antenna bracket.

[0016] A radio frequency device including a three-dimensional antenna provided by the present application includes: a PCB, a three-dimensional antenna bracket, a connecting member, a housing, a sealing ring, and a cover; an antenna pattern is provided on the surface of the three-dimensional antenna bracket, and the connecting member is disposed at the bottom of the three-dimensional antenna bracket and / or on the surface of the PCB, so that the three-dimensional antenna bracket is connected to the surface of the PCB through the connecting member. Both the PCB and the three-dimensional antenna bracket are disposed in the housing, the opening of the housing is detachably connected to the cover, and a sealing ring is provided at the connection between the housing and the cover. By providing a connecting member at the bottom of the three-dimensional antenna bracket and / or on the surface of the PCB, the three-dimensional antenna bracket can be connected to the surface of the PCB, and there is no need to perforate the PCB to implement the three-dimensional antenna structure, avoiding the situation where metal pins protrude from the surface of the PCB, thereby ensuring signal consistency and improving signal quality. Secondly, the housing protects the PCB and the three-dimensional antenna bracket, and a sealing ring is provided at the connection between the housing and the cover, which can effectively prevent the PCB and the three-dimensional antenna bracket from being affected by external environmental factors, thereby improving the stability and reliability of the device and extending its service life. In addition, by providing a three-dimensional antenna on the PCB, compared with providing a planar antenna, it can save the area of the PCB and obtain better signals. Description of the Drawings

[0017] To more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Is an exploded view of a radio frequency device provided by an embodiment of the present application;

[0019] Figure 2 Is a schematic diagram of the first type of PCB provided by an embodiment of the present application;

[0020] Figure 3 Is a schematic diagram of the second type of PCB provided by an embodiment of the present application;

[0021] Figure 4 Is a schematic diagram of the connection between the first type of three-dimensional antenna bracket and the PCB provided by an embodiment of the present application;

[0022] Figure 5 Is a bottom view of a three-dimensional antenna bracket provided by an embodiment of the present application;

[0023] Figure 6 Is a side view of a three-dimensional antenna bracket provided by an embodiment of the present application;

[0024] Figure 7 Is a schematic diagram of the connection between the second type of three-dimensional antenna bracket and the PCB provided by an embodiment of the present application;

[0025] Figure 8 Schematic diagram of the connection between the third three-dimensional antenna bracket and the PCB provided by the embodiment of the present application;

[0026] Figure 9 Schematic diagram of the first three-dimensional antenna bracket provided by the embodiment of the present application;

[0027] Figure 10 Schematic diagram of the second three-dimensional antenna bracket provided by the embodiment of the present application;

[0028] Figure 11 Structural diagram of a spring pin provided by the embodiment of the present application;

[0029] Reference numerals are as follows: 1 - PCB, 2 - housing, 3 - sealing ring, 4 - cover, 5 - three-dimensional antenna bracket, 501 - antenna pattern, 6 - planar antenna, 7 - pad, 8 - positioning post, 9 - spring pin, 901 - base, 902 - needle tube, 903 - spring, 904 - needle tip, 10 - gold finger, 11 - positioning groove. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0031] The core of the present application is to provide a radio frequency device including a three-dimensional antenna, which is used to ensure signal consistency and improve signal quality.

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0033] Figure 1 Exploded view of a radio frequency device provided by the embodiment of the present application, as Figure 1 shown, the radio frequency device of the three-dimensional antenna includes: PCB 1, three-dimensional antenna bracket 5, connecting member, housing 2, sealing ring 3 and cover 4; an antenna pattern 501 is provided on the surface of the three-dimensional antenna bracket 5, and the connecting member is disposed at the bottom of the three-dimensional antenna bracket 5 and / or on the surface of the PCB 1, so that the three-dimensional antenna bracket 5 is connected to the surface of the PCB 1 through the connecting member. Both the PCB 1 and the three-dimensional antenna bracket 5 are disposed in the housing 2, the opening of the housing 2 is detachably connected to the cover 4, and a sealing ring 3 is provided at the connection between the housing 2 and the cover 4.

[0034] In the embodiment of the present application, a three-dimensional antenna bracket 5 is obtained after injection molding of a liquid crystal polymer (LCP) with adjustable dielectric constant Dk, and then an antenna pattern 501 is made on the surface of the injection-molded three-dimensional antenna bracket 5 by using laser direct structuring (LDS) technology or molded interconnect device (MID) process; wherein, the Dk value needs to be selected according to the frequency of the antenna, and the material needs to be resistant to high temperature in the reflow soldering process.

[0035] The embodiment of the present application does not specifically limit the shape of the three-dimensional antenna bracket 5. A hollow cavity can be provided inside the three-dimensional antenna bracket 5, that is, the three-dimensional antenna bracket 5 is made hollow. Its functions include: to achieve material escape, reduce weight, reduce material cost and reduce processing time without affecting the overall structural strength and function; the hollow design can improve its bending resistance by increasing the section moment of inertia of the structure, making the antenna bracket more stable when bearing loads; the antenna bracket with a hollow structure can provide more space for integrating components such as cables and pipelines, and is also convenient for assembling and connecting with other structural parts; the hollow design can improve the heat dissipation efficiency of the antenna bracket; the design of the hollow structure can adjust parameters such as wall thickness, shape and size according to needs to achieve the expected performance and function; in some cases, the antenna bracket with a hollow structure can provide better electromagnetic performance, such as reducing the signal shielding effect and improving the efficiency of communication antennas. Specifically, the injection-molded three-dimensional antenna bracket 5 is in the shape of a hollow cube with uniform wall thickness.

[0036] The embodiment of the present application does not specifically limit the connecting piece. The connecting piece can be a pad 7 for welding with the pad 7; the connecting piece can also be a board-to-board connector, and the connecting piece can also be a spring pin 9 (pogo pin), etc. The embodiment of the present application does not limit the detachable connection method between the housing 2 and the cover 4, and can adopt threaded connection or achieve plug-in connection through a pin and a slot.

[0037] Figure 2 It is a schematic diagram of the first PCB provided by the embodiment of the present application. Figure 3 It is a schematic diagram of the second PCB provided by the embodiment of the present application. Figure 2 The planar antenna 6 in it occupies a certain proportion of the area of the PCB1, and is changed to Figure 3 a three-dimensional antenna, saving the space of the PCB1 and obtaining better signals.

[0038] A radio frequency device including a three-dimensional antenna provided by an embodiment of the present application includes: a PCB, a three-dimensional antenna bracket, a connecting member, a housing, a sealing ring, and a cover; an antenna pattern is provided on the surface of the three-dimensional antenna bracket, and the connecting member is disposed at the bottom of the three-dimensional antenna bracket and / or on the surface of the PCB, so that the three-dimensional antenna bracket is connected to the surface of the PCB through the connecting member. Both the PCB and the three-dimensional antenna bracket are disposed in the housing, and the opening of the housing is detachably connected to the cover, and a sealing ring is provided at the connection between the housing and the cover. By providing the connecting member at the bottom of the three-dimensional antenna bracket and / or on the surface of the PCB, the three-dimensional antenna bracket can be connected to the surface of the PCB, and there is no need to perforate the PCB to implement the three-dimensional antenna structure, avoiding the situation where metal pins protrude from the surface of the PCB, thereby ensuring signal consistency and improving signal quality; secondly, the housing protects the PCB and the three-dimensional antenna bracket, and a sealing ring is provided at the connection between the housing and the cover, which can effectively prevent the PCB and the three-dimensional antenna bracket from being affected by external environmental factors, thereby improving the stability and reliability of the device and extending the service life; in addition, by providing a three-dimensional antenna on the PCB, compared with providing a planar antenna, the area of the PCB can be saved and better signals can be obtained.

[0039] Based on the above embodiment, Figure 4 FIG. 5 is a schematic diagram of the connection between the first three-dimensional antenna bracket and the PCB provided by the embodiment of the present application. Figure 5 FIG. 6 is a bottom view of a three-dimensional antenna bracket provided by the embodiment of the present application. As Figure 4 and Figure 5 shown, the connecting member is a solder pad 7, and the solder pad 7 is disposed at the bottom of the three-dimensional antenna bracket 5. The three-dimensional antenna bracket 5 is soldered to the surface of the PCB 1 by surface mount technology (SMT) through the solder pad 7. Specifically, the LDS technology or MID process can be used to make the shape of the solder pad 7 at the bottom of the three-dimensional antenna bracket 5, and after being metallized in the chemical plating bath, it can be SMT soldered to the PCB 1.

[0040] Based on the above embodiment, the number of solder pads 7 in the embodiment of the present application is multiple, and the multiple solder pads 7 are evenly distributed at the bottom of the three-dimensional antenna bracket 5. As Figure 5 shown, the bottom surface of the three-dimensional antenna bracket 5 is rectangular, and a solder pad 7 is provided in the middle of each side of the rectangle. The solder pads 7 are evenly distributed on the bottom surface of the three-dimensional antenna bracket 5, which has the following advantages: the evenly distributed solder pads 7 can more effectively transmit the signals received by the antenna to the PCB 1 board, reducing the loss of signals during transmission, thereby improving the overall efficiency of the antenna; by evenly distributing the solder pads 7, the signals received by the antenna can be more evenly distributed in all directions, which helps to improve the receiving ability and coverage range of the antenna; the evenly distributed solder pads 7 can be used as part of the structural reinforcement to improve the stability and durability of the antenna bracket.

[0041] Based on the above embodiments, Figure 6 FIG. 5 is a side view of a three-dimensional antenna bracket 5 provided by an embodiment of the present application. As Figure 5 and Figure 6 shown, a plurality of positioning posts 8 are further provided at the bottom of the three-dimensional antenna bracket 5, and positioning grooves are provided on the surface of the PCB 1. The positioning posts 8 and the positioning grooves cooperate to position the three-dimensional antenna bracket 5 at a set position on the surface of the PCB 1. Specifically, the number of the positioning posts 8 is two, and the two positioning posts 8 are respectively arranged at both ends of the diagonal line of the bottom surface of the three-dimensional antenna bracket 5. The purpose of arranging the positioning posts 8 at the bottom of the three-dimensional antenna bracket 5: The positioning posts 8 can ensure the accurate alignment of the antenna bracket during installation, avoid position deviation, which is crucial for ensuring the performance of the antenna and the stability of the received signal; the positioning posts 8 can improve the connection stiffness between the antenna bracket and the PCB 1, and reduce displacement or deformation caused by factors such as vibration; during the installation process, the positioning posts 8 can be used as auxiliary tools to help quickly and accurately position the antenna bracket to the correct installation position.

[0042] Figure 7 FIG. 6 is a schematic diagram of the connection between the second three-dimensional antenna bracket and the PCB provided by an embodiment of the present application. Figure 8 FIG. 7 is a schematic diagram of the connection between the third three-dimensional antenna bracket and the PCB provided by an embodiment of the present application. Figure 9 FIG. 3 is a schematic diagram of the first three-dimensional antenna bracket provided by an embodiment of the present application. Figure 10 FIG. 4 is a schematic diagram of the second three-dimensional antenna bracket provided by an embodiment of the present application. As Figures 7 to 10 shown, the connection is a spring pin 9. The spring pin 9 is connected to the surface of the PCB 1. A gold finger 10 is provided at the bottom of the three-dimensional antenna bracket 5, and the top of the three-dimensional antenna bracket 5 is detachably connected to the inner wall of the housing 2 so that the spring pin 9 abuts against the gold finger 10.

[0043] Due to the advantages of its structure and materials, the spring pin 9 (Pogo Pin) can ensure the consistency of signal transmission. The spring pin 9 is usually made of copper material with very good electrical conductivity, and is gold-plated on the surface to improve its anti-corrosion function, mechanical properties and electrical properties. The structure of the spring pin 9 enables the spring pin 9 to generate a stable electrical connection when contacting, and has the characteristics of durability and high-speed transmission, thus ensuring the stability and consistency of signal transmission. The embodiment of the present application does not specifically limit the number of the spring pins 9, which can be set according to needs. The number of the gold fingers 10 at the bottom of the three-dimensional antenna bracket 5 is adapted to the number of the spring pins 9; wherein, the gold finger 10 is a conductive area, and is gold-plated on the surface to improve wear resistance and conductivity.

[0044] The embodiments of the present application do not limit the detachable connection method between the three-dimensional antenna bracket 5 and the inner wall of the housing 2. Specifically, ribs are provided at the top of the three-dimensional antenna bracket 5, and positioning grooves 11 matching the ribs are provided on the inner wall of the housing 2. The three-dimensional antenna bracket 5 is slidably connected to the housing 2 through the ribs and the positioning grooves 11. The method of sliding connection through rib grooves can simplify the installation process.

[0045] Based on the above embodiments, Figure 11 The following is a structural diagram of a spring pin provided by an embodiment of the present application. As Figure 11 shown, the spring pin 9 of the embodiment of the present application includes a base 901, a needle tube 902, a spring 903, and a needle tip 904. The bottom of the needle tube 902 is connected to the base 901, the base 901 is welded to the surface of the PCB 1, the spring 903 is disposed inside the needle tube 902, one end of the spring 903 is connected to the bottom of the needle tube 902, the other end of the spring 903 is connected to the first end of the needle tip 904, and the second end of the needle tip 904 extends out of the needle tube 902 through the top opening of the needle tube 902.

[0046] The base 901 is the fixed part of the spring pin 9 for connecting to the PCB 1, providing a stable support and installation platform for the spring pin 9; the needle tube 902 is a tubular structure that wraps around the outside of the spring 903, protecting the spring 903 and providing guidance; the needle tip 904 is the part of the spring pin 9 that contacts the gold finger 10 and is usually made of a material with good electrical conductivity, such as copper or gold-plated copper. As Figure 11 shown, the top of the needle tip 904 is an arc surface, and the purpose of the arc surface design is that the arc surface structure can, to a certain extent, adapt to the minute unevenness on the surface of the gold finger 10, ensuring good electrical connection under various contact conditions.

[0047] Above, it mainly introduces connecting the three-dimensional antenna bracket to the PCB surface by soldering pads and connecting the three-dimensional antenna bracket and the PCB through spring pins and gold fingers. Neither of these two connection methods will have metal pins protruding from the PCB surface, thus ensuring signal consistency and improving signal quality.

[0048] The advantages of connecting the three-dimensional antenna bracket to the PCB by soldering pads mainly include the following points: Soldering provides a stable and reliable electrical connection. Compared with other connection methods, the soldering points can withstand greater current and have better electrical conductivity; the soldering pad design allows the three-dimensional antenna bracket to be closely installed on the PCB without additional connectors or interfaces, helping to reduce the overall size of the device.

[0049] The advantages of connecting the three-dimensional antenna bracket and the PCB through spring pins and gold fingers mainly include the following points: Spring pins can improve the signal transmission performance of the antenna, making the antenna radiation farther away from the PCB and its components, which is more conducive to the performance of the antenna; The contact method of spring pins and gold fingers can ensure a stable low-impedance connection, which is crucial for the stability and quality of signal transmission; Spring pins provide precise and stable connection points, facilitating radio frequency signal transmission without frequency deviation.

[0050] The above has introduced in detail a radio frequency device including a three-dimensional antenna. The various embodiments in the specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0051] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A radio frequency device comprising a three-dimensional antenna, characterized in that: include: PCB (1), a three-dimensional antenna bracket (5), a connecting piece, a housing (2), a sealing ring (3) and a cover (4); An antenna pattern (501) is provided on the surface of the three-dimensional antenna bracket (5); the connecting piece is provided at the bottom of the three-dimensional antenna bracket (5) and / or the surface of the PCB (1), so that the three-dimensional antenna bracket (5) is connected to the surface of the PCB (1) through the connecting piece; the PCB (1) and the three-dimensional antenna bracket (5) are both provided in the shell (2); the opening of the shell (2) is detachably connected to the cover body (4); and the sealing ring (3) is provided at the connection between the shell (2) and the cover body (4).

2. The radio frequency device comprising a three-dimensional antenna according to claim 1, characterized in that: The connecting piece is a soldering pad (7), the soldering pad (7) is arranged at the bottom of the three-dimensional antenna bracket (5), and the three-dimensional antenna bracket (5) is soldered to the surface of the PCB (1) in a SMT manner via the soldering pad (7).

3. The radio frequency device comprising a three-dimensional antenna according to claim 2, characterized in that: There are a plurality of solder pads (7), and the plurality of solder pads (7) are evenly distributed on the bottom of the three-dimensional antenna support (5).

4. The radio frequency device comprising a three-dimensional antenna according to claim 2, characterized in that: The bottom of the three-dimensional antenna bracket (5) is also provided with a plurality of positioning posts (8), and the surface of the PCB (1) is provided with positioning grooves, and the positioning posts (8) and the positioning grooves cooperate to position the three-dimensional antenna bracket (5) at a set position on the surface of the PCB (1).

5. The radio frequency device comprising a three-dimensional antenna according to claim 1, characterized in that: The connection is a spring pin (9), the spring pin (9) is connected to the surface of the PCB (1), a gold finger (10) is provided at the bottom of the three-dimensional antenna bracket (5), and the top of the three-dimensional antenna bracket (5) is detachably connected to the inner wall of the shell (2) so that the spring pin (9) and the gold finger (10) are in contact with each other.

6. The radio frequency device comprising a three-dimensional antenna according to claim 5, characterized in that: The top of the three-dimensional antenna bracket (5) is provided with a rib, the inner wall of the shell (2) is provided with a positioning groove (11) that matches the rib, and the three-dimensional antenna bracket (5) is slidably connected to the shell (2) via the rib and the positioning groove (11).

7. The radio frequency device comprising a three-dimensional antenna according to claim 5, characterized in that: The spring needle (9) comprises a base (901), a needle tube (902), a spring (903) and a needle head (904); the bottom of the needle tube (902) is connected to the base (901); the base (901) is welded to the surface of the PCB (1); the spring (903) is arranged in the needle tube (902); one end of the spring (903) is connected to the bottom of the needle tube (902); the other end of the spring (903) is connected to the first end of the needle head (904); and the second end of the needle head (904) extends out of the needle tube (902) through the top opening of the needle tube (902).

8. The radio frequency device comprising a three-dimensional antenna according to claim 7, characterized in that: The top of the needle (904) is a curved surface.

9. The radio frequency device comprising a three-dimensional antenna according to any one of claims 1 to 8, characterized in that: A hollow cavity is provided inside the three-dimensional antenna bracket (5).

10. The radio frequency device comprising a three-dimensional antenna according to claim 4, characterized in that: There are two positioning posts (8), and the two positioning posts (8) are respectively arranged at two ends of the bottom diagonal line of the three-dimensional antenna bracket (5).

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