Dual 4g external antenna

Abstract

The utility model discloses a double 4G external antenna, specifically related to double 4G external antenna technical field, including mounting panel and the PCB board of fixed mounting on mounting panel, the top fixed mounting of PCB board has main 4G antenna and deputy 4G antenna, and main 4G antenna and deputy 4G antenna between vertical distribution, the support U type board of PCB board top fixed mounting is symmetrically fixed mounting has main wire, and two main wires are respectively matched in main 4G antenna and deputy 4G antenna. The double 4G external antenna provided by the utility model, through the vertical distribution of main 4G antenna and deputy 4G antenna on the top of PCB board, and through main wire respectively matching main deputy antenna, when main antenna fault, deputy antenna can automatically take over, ensure continuous communication, significantly reduce the shutdown risk of vehicle-mounted system, through the vertical distribution between main 4G antenna and deputy 4G antenna, make the polarization of two antennas is orthogonal, reduce the influence before each other, make the overall performance of antenna excellent through the above structure optimization.

Description

Technical Field

[0001] This utility model relates to the field of dual 4G external antenna technology, specifically to a dual 4G external antenna. Background Technology

[0002] The in-vehicle 4G antenna is a converter designed specifically for the vehicle environment to receive and transmit 4G network wireless signals. It enables vehicles to exchange data with the mobile internet and is used for navigation, audio-visual entertainment, fault diagnosis, and other purposes.

[0003] According to patent publication number CN209981453U, published on January 21, 2020, a 4G antenna is disclosed, characterized in that it includes a base, an insulated shell, a FAKRA connector, and a 4G antenna PCB; the 4G antenna PCB is soldered to the FAKRA connector, the 4G antenna PCB is screwed to the base, and the FAKRA connector is crimped to the base; the insulated shell is insulated to the 4G antenna PCB and the base.

[0004] The technologies mentioned in the patents utilize a single-channel 4G antenna array to receive 4G radio communication signals. However, in practical use, single-channel 4G antennas suffer from rate bottlenecks, single-point failures, and susceptibility to signal fading. Utility Model Content

[0005] The purpose of this invention is to provide a dual 4G external antenna to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual 4G external antenna, comprising a mounting plate and a PCB board fixedly mounted on the mounting plate. A main 4G antenna and a secondary 4G antenna are fixedly mounted on the top of the PCB board, and the main 4G antenna and the secondary 4G antenna are vertically distributed between them. A main guide line is symmetrically fixedly mounted on a supporting U-shaped plate fixedly mounted on the top of the PCB board, and the two main guide lines are respectively matched with the main 4G antenna and the secondary 4G antenna.

[0007] Preferably, the PCB board is covered with a metal cover.

[0008] Preferably, the partition fixedly installed inside the metal cover is located between the main 4G antenna and the secondary 4G antenna.

[0009] Preferably, the metal cover has a mounting threaded groove, the PCB board has a first through hole, and the mounting plate has a second through hole, with the mounting threaded groove, the first through hole, and the second through hole corresponding to each other.

[0010] Preferably, a pressure plate is fixedly installed on the metal cover, and a first rubber pad fixedly installed on the pressure plate is movably disposed on a second rubber pad fixedly installed on the U-shaped plate, and the two main guide lines are movably disposed between the first rubber pad and the second rubber pad.

[0011] Preferably, the second rubber pad has a first placement groove symmetrically arranged on it, and the first rubber pad has a second placement groove symmetrically arranged on it.

[0012] Preferably, the protrusion on the inner wall of the second placement groove is movably disposed within the groove on the inner wall of the first placement groove.

[0013] Preferably, a splicing board frame is fixedly installed on the top of the PCB board.

[0014] Preferably, the mounting plate has mounting holes.

[0015] Preferably, the mounting plate is made of stainless steel.

[0016] In the above technical solution, the dual 4G external antenna provided by this utility model has the following beneficial effects: By vertically distributing the main 4G antenna and the secondary 4G antenna on the top of the PCB board, and matching the main and secondary antennas respectively through the main guide line, this dual antenna vertical layout realizes multi-channel operation, fundamentally improving the fault tolerance and signal processing capability of the antenna. When the main antenna fails, the secondary antenna can automatically take over to ensure continuous communication and significantly reduce the risk of vehicle system downtime. By vertically distributing the main 4G antenna and the secondary 4G antenna, the polarization of the two antennas is orthogonal, reducing mutual influence. The above structural optimization makes the overall performance of the antenna excellent. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the PCB board structure provided in this embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the metal cover structure provided in an embodiment of this utility model;

[0021] Figure 4 A schematic diagram of the mounting plate structure provided in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall cross-sectional structure provided for an embodiment of the present utility model;

[0023] Figure 6 This is an enlarged structural diagram of point A provided in an embodiment of the present utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Mounting plate; 2. PCB board; 3. Metal cover; 4. Second rubber pad; 5. First rubber pad; 6. Main lead wire; 11. Second through hole; 12. Mounting hole; 21. First through hole; 22. Secondary 4G antenna; 23. Main 4G antenna; 24. Splicing board frame; 25. Support U-shaped plate; 31. Pressure plate; 32. Partition plate; 33. Mounting threaded groove; 41. First placement groove; 42. Groove; 51. Second placement groove; 52. Protrusion. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] Please see Figure 1-6 The present invention provides a technical solution, including the following embodiments:

[0028] Example 1

[0029] like Figure 2 As shown, this embodiment focuses on the core layout of dual 4G external antennas, and achieves high-performance communication through the vertical distribution design at the top of PCB board 2.

[0030] Specifically, a main 4G antenna 23 and a secondary 4G antenna 22 are fixedly mounted on the top of PCB board 2, and the two are vertically distributed. This orthogonal polarization layout minimizes the mutual interference between the signals of the two antennas, fundamentally avoiding co-channel interference. A supporting U-shaped plate 25 is fixed on PCB board 2 and is matched with the main and secondary antennas respectively through the main guide line 6 to form independent signal channels. During operation, the main 4G antenna 23 is responsible for the main data transmission and reception, while the secondary 4G antenna 22 serves as a redundant backup. When the main antenna fails due to fault or signal fading, the system can automatically switch to the secondary antenna to ensure seamless communication takeover. This multi-channel operation not only improves the data transmission rate but also significantly reduces the risk of single-point failure. At the same time, the vertical distribution of the dual antennas provides hardware-level redundancy. When the main antenna fails, the secondary antenna immediately takes over, reducing the risk of vehicle system downtime and making it suitable for high-reliability scenarios such as autonomous driving or emergency communication. The orthogonal polarization design reduces the coupling effect between antennas, improves the signal-to-noise ratio, and maintains a stable connection even in complex electromagnetic environments.

[0031] Example 2

[0032] like Figure 6 As shown, this embodiment details the design for fixing and protecting the wires, aiming to improve the durability and stability of the antenna.

[0033] Specifically, the first rubber pad 5 is fixedly installed on the metal cover 3 with glue, and the second rubber pad 4 is fixedly installed on the PCB board 2 with glue. The pressure plate 31 fixedly installed on the metal cover 3 cooperates with the second rubber pad 4 on the supporting U-shaped plate 25. The first rubber pad 5 is movably set on the second rubber pad 4, and the two main guide lines 6 are clamped between the first rubber pad 5 and the second rubber pad 4.

[0034] Furthermore, the second rubber pad 4 is symmetrically provided with a first placement groove 41, and the first rubber pad 5 is symmetrically provided with a second placement groove 51, with the protrusion 52 on the inner wall of the second placement groove 51 movably embedded in the groove 42 on the inner wall of the first placement groove 41. This interlocking structure not only ensures the precise positioning of the main guide wire 6, but also buffers vibration and impact through the elasticity of the rubber material. During operation, the bending stress on the wire during vehicle travel is absorbed by the rubber pad, and the cooperation between the protrusion 52 and the groove 42 prevents the wire from slipping, achieving flexible fixation. The damping characteristics of the rubber pad can attenuate high-frequency vibrations, extend the life of the wire, and make it suitable for harsh environments such as off-road vehicles. The interlocking design of the protrusion 52 and the groove 42 forms a sealing effect, preventing moisture and dust from entering.

[0035] Example 3

[0036] like Figure 3 and Figure 5 As shown, this embodiment emphasizes the role of the metal cover 3 and the partition 32 in reducing electromagnetic interference.

[0037] Specifically, a metal cover 3 is mounted on the PCB board 2, and a partition 32 is fixedly installed inside the cover between the main 4G antenna 23 and the secondary 4G antenna 22. The partition 32 is made of conductive material and forms a continuous shield with the metal cover 3. During operation, the partition 32 divides the antenna cavity into two independent areas, effectively blocking near-field coupling between the main and secondary antennas; at the same time, the metal cover 3 is grounded as a whole, shielding against external electromagnetic interference such as engine ignition noise. Figure 5 As shown, the mounting threaded groove 33, the first through hole 21, and the second through hole 11 correspond to each other. Screws pass through the first through hole 21 and the second through hole 11 and are threaded onto the mounting threaded groove 33 on the metal cover 3, thus achieving quick installation and fixation of the three components. This ensures a tight fixation between the cover and the mounting plate 1, further enhancing shielding integrity. Therefore, the use of the partition 32 design improves antenna isolation and reduces intermodulation distortion.

[0038] Example 4

[0039] like Figure 1 and Figure 4 As shown, this embodiment focuses on the environmental adaptability of the mounting plate 1 and the overall structure.

[0040] Specifically, mounting plate 1 is made of stainless steel and has mounting holes 12 and a second through hole 11 for easy bolt fixing to the vehicle surface. The splicing board frame 24 fixedly mounted on top of PCB board 2 allows for modular expansion, such as integration of GPS or Wi-Fi modules. The stainless steel material of mounting plate 1 provides corrosion resistance.

[0041] Working principle: First, the main 4G antenna 23 and the secondary 4G antenna 22, vertically distributed on the top of the PCB board 2, form an orthogonal polarization layout, reducing co-channel interference between signals. The supporting U-shaped plate 25 fixes the main conductor 6 to establish an independent channel, so that the main antenna is responsible for main data transmission and reception, and the secondary antenna serves as a redundant backup. When the main antenna fails or the signal fades, the system automatically switches to ensure communication continuity, improve data transmission rate, and reduce the risk of single point of failure. Second, the main conductor 6 is fixed by the pressure plate 31 on the metal cover 3, which cooperates with the first rubber pad 5 and the second rubber pad 4 to achieve flexible clamping. The first placement groove 41 of the second rubber pad 4 and the second placement groove 51 of the first rubber pad 5 are interlocked by the protrusion 52 and the groove 42, which buffers the vibration and impact during vehicle operation, while forming a sealing effect to prevent moisture and dust from entering and extend the component life. Furthermore, the internal partition 32 of the metal cover 3 forms a continuous shield with the cover body, separating the main and secondary antenna cavities, blocking near-field coupling, and enhancing grounding shielding through screw fixing via the mounting threaded groove 33, the first through hole 21, and the second through hole 11, effectively suppressing external electromagnetic interference and improving antenna isolation and signal quality. Finally, the mounting plate 1 is made of stainless steel and is fixed to the vehicle surface through the mounting holes 12 and the second through hole 11, providing corrosion resistance. The splicing board frame 24 on the top of the PCB board 2 supports modular expansion to adapt to various environmental requirements and ensure stable antenna operation under harsh conditions. Overall, this antenna, through dual antennas, flexible wire fixing, electromagnetic shielding, and environmental adaptability design, achieves high reliability, low interference, and long lifespan communication performance, making it suitable for vehicle-mounted scenarios.

[0042] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dual 4G external antenna, characterized in that, The device includes a mounting plate (1) and a PCB board (2) fixedly mounted on the mounting plate (1). A main 4G antenna (23) and a secondary 4G antenna (22) are fixedly mounted on the top of the PCB board (2), and the main 4G antenna (23) and the secondary 4G antenna (22) are vertically distributed between them. A main guide line (6) is symmetrically fixedly mounted on a supporting U-shaped plate (25) fixedly mounted on the top of the PCB board (2), and the two main guide lines (6) are respectively matched with the main 4G antenna (23) and the secondary 4G antenna (22).

2. The dual 4G external antenna according to claim 1, characterized in that, The PCB board (2) is covered with a metal cover (3).

3. The dual 4G external antenna according to claim 2, characterized in that, The partition (32) fixedly installed inside the metal cover (3) is located between the main 4G antenna (23) and the secondary 4G antenna (22).

4. The dual 4G external antenna according to claim 3, characterized in that, The metal cover (3) has a mounting thread groove (33), the PCB board (2) has a first through hole (21), and the mounting plate (1) has a second through hole (11). The mounting thread groove (33), the first through hole (21), and the second through hole (11) correspond to each other.

5. A dual 4G external antenna according to claim 2, characterized in that, A pressure plate (31) is fixedly installed on the metal cover (3), and a first rubber pad (5) fixedly installed on the pressure plate (31) is movably disposed on a second rubber pad (4) fixedly installed on the U-shaped plate (25). The two main lines (6) are movably disposed between the first rubber pad (5) and the second rubber pad (4).

6. A dual 4G external antenna according to claim 5, characterized in that, The second rubber pad (4) is symmetrically provided with a first placement groove (41), and the first rubber pad (5) is symmetrically provided with a second placement groove (51).

7. A dual 4G external antenna according to claim 6, characterized in that, The protrusion (52) provided on the inner wall of the second placement groove (51) is movably disposed in the groove (42) provided on the inner wall of the first placement groove (41).

8. A dual 4G external antenna according to claim 4, characterized in that, A splicing board frame (24) is fixedly installed on the top of the PCB board (2).

9. A dual 4G external antenna according to claim 1, characterized in that, The mounting plate (1) has mounting holes (12).

10. A dual 4G external antenna according to claim 1, characterized in that, The mounting plate (1) is a stainless steel plate.

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