CN216214099U - High-gain V2X antenna - Google Patents

Abstract

The utility model discloses a high-gain V2X antenna, which comprises a shell, wherein the shell is of a cylindrical hollow structure; the SMA connector and the PCB are welded at two ends of the cable, the welded SMA connector is arranged on the inner wall of the shell, and the PCB is arranged in the shell; the chock block is arranged on the inner wall of the shell far away from the SMA connector, and the end part of the chock block and the end part of the shell are on the same horizontal plane; the shell, the SMA joint and the chock block form a closed space, so that a waterproof function is realized, and the transmission and the reception of signals are not influenced. The high-gain V2X antenna adopts an external antenna, the radiating body of the antenna adopts a PCB plate with 132.5mm x 10mm, the superposition of gain in the horizontal direction is realized by adopting a dipole series feed principle, the gain in the horizontal direction can effectively reach 6.45DB, the transmission distance in each direction in actual measurement can reach 2000 m, the production cost is reduced, and the assembly is convenient.

Description

High-gain V2X antenna

Technical Field

The utility model relates to the technical field of antennas, in particular to a high-gain V2X antenna.

Background

V2X (Vehicle to X) is a key technology of the future intelligent transportation system. It enables communication between cars, between cars and base stations, and between base stations. Therefore, a series of traffic information such as real-time road conditions and road information is obtained, driving safety is improved, congestion is reduced, traffic efficiency is improved, vehicle-mounted entertainment information is provided, and the like. The vehicle model matched with the system can automatically select the driving route with the best road condition through analyzing the traffic information in an automatic driving mode, thereby greatly relieving traffic jam. In addition, by using the vehicle-mounted sensor and the camera system, the surrounding environment can be sensed and rapidly adjusted, so that zero traffic accidents are realized. For example, if a pedestrian suddenly appears, it may be automatically decelerated to a safe speed or stopped.

The antenna is the most important loop in the whole V2X system, and the horizontal gain of the antenna directly influences the data interaction distance between V2X devices. The V2X antenna on the market at present generally adopts a built-in antenna form, and it is generally difficult to ensure that the effective gain is in the horizontal direction. The average gain in the horizontal direction can only be about 2DB, and the gain distribution in the horizontal direction is not likely to be uniform, so that the transmission distance is generally within 500 m during actual measurement.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the high-gain V2X antenna which is simple in structure, realizes the superposition of gains in the horizontal direction, and effectively achieves that the gain in the horizontal direction reaches 6.45DB, so that the transmission distance in each direction in actual measurement can reach 2000 m.

The utility model discloses a high-gain V2X antenna, which comprises a shell, wherein the shell is of a cylindrical hollow structure;

the SMA connector and the PCB are welded at two ends of the cable, the welded SMA connector is arranged on the inner wall of the shell, and the PCB is arranged in the shell;

the chock block is arranged far away from the SMA joint on the inner wall of the shell, and the end part of the chock block and the end part of the shell are on the same horizontal plane.

Further, the high-gain V2X antenna comprises a housing, a center pin inserted in the housing, and a rotary head located on the outer wall of the housing, wherein the center pin is wound with an insulating material.

Furthermore, in the high-gain V2X antenna, a core wire is disposed in the cable, one end of the core wire is welded to the center pin, and the other end of the core wire is welded to a pad on the PCB board.

Further, according to the high-gain V2X antenna, the PCB is provided with foam attached to the inner wall of the housing. The foam is pasted on the inner wall of the shell, so that the PCB is prevented from vibrating, and the stability is improved.

Further, in the high-gain V2X antenna, the PCB is a 132.5mm × 10mm FR4 board.

Furthermore, in the high-gain V2X antenna, one end of the SMA joint, which is far away from the cable, is connected to a patch cord.

Furthermore, the patch cord of the high-gain V2X antenna comprises four types, namely SMA-to-SMA, SMA-to-TS-9, SMA-to-FAKRA and SMA-to-IPEX/ECT. The SMA connector used in the antenna has the shape electrical length of 1/4 wavelength of 5880MHz of the center frequency of the antenna, and can play a role in choking the antenna. This makes the antenna suitable for use in different environments. The SMA connector of the antenna can be installed to all V2X devices in the market through four patch cords.

Further, in the high-gain V2X antenna, the housing is made of ABS material. The production cost is reduced.

Further, the high-gain V2X antenna, the housing, the SMA joint and the plug form a closed space.

The technical scheme shows that the utility model has the following technical effects:

1. according to the high-gain V2X antenna, the external antenna is adopted in the design, the radiating body of the antenna is made of a PCB (printed circuit board) with the thickness of 132.5mm x 10mm, the gain superposition in the horizontal direction is realized by adopting a dipole series feed principle, the gain in the horizontal direction is effectively up to 6.45DB, and the transmission distance in each direction in actual measurement can be up to 2000 m.

2. According to the high-gain V2X antenna, the PCB is selected as the antenna radiator in the design, compared with the traditional copper tube, the cost is reduced, the assembly is convenient and fast, and the PCB with the width of 10mm is adopted in the design to ensure the superposition of gain in the horizontal direction.

3. The high-gain V2X antenna has the advantages that the components are tightly installed, the waterproof function is realized, and meanwhile, the transmission and the reception of signals are not influenced.

In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of the overall structure of a high-gain V2X antenna in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a high-gain V2X antenna according to an embodiment of the present invention after welding of SMA, cable, and PCB plates;

FIG. 3 is an enlarged partial schematic view of an SMA and cable weld in an embodiment of the utility model;

FIG. 4 is a schematic structural view of an SMA in an embodiment of the utility model;

FIG. 5 is a schematic diagram of the construction of a cable in an embodiment of the utility model;

fig. 6 is a schematic diagram of patch cord types in an embodiment of the present invention.

Reference numerals of the above figures: 1-SMA joint; 10-a housing; 11-a central needle; 12-a rotating head; 13-an insulating material; 2-a cable; 21-a core wire first end; 22-a core second end; 3-PCB board; 31-a pad; 4-soaking cotton; 5-a housing; 6-a chock block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Examples

Referring to fig. 1-3, the present embodiment provides a high-gain V2X antenna, which includes a housing 5, wherein the housing 5 has a cylindrical hollow structure; the cable 2, the SMA connector 1 and the PCB 3 are welded at two ends of the cable, the welded SMA connector 1 is adhered to the inner wall of the shell 5 in a dispensing mode, and the PCB 3 is arranged in the shell 5; and the chock 6 is arranged on the inner wall of the shell 5 far away from the SMA joint 1, and the end part of the chock 6 is on the same horizontal plane with the end part of the shell 5.

By means of the structure, the high-gain V2X antenna is achieved, the external antenna is adopted, the antenna radiating body is made of a PCB (printed circuit board) with the thickness of 132.5mm x 10mm, the superposition of gains in the horizontal direction is achieved by adopting a dipole series feed principle, the gains in the horizontal direction reach 6.45DB, and therefore the transmission distance in each direction can reach 2000 m in actual measurement.

Specifically, as shown in fig. 4, the SMA joint 1 includes a housing 10, a center pin 11 inserted in the housing, and a rotary head 12 located on the outer wall of the housing, wherein an insulating material 13 is wound around the center pin 11.

Specifically, as shown in fig. 5, a core wire is provided in the cable 2, a first end portion 21 of the core wire is soldered to the center pin 11, and a second end portion 22 of the core wire is soldered to the land 31 of the PCB board 3.

Specifically, the PCB 3 is provided with foam 4 attached to the inner wall of the housing 5. The foam 4 is adhered to the inner wall of the shell 5, so that the PCB 3 is prevented from vibrating, and the stability is improved.

Specifically, the PCB 3 is a 132.5mm × 10mm FR4 board. The effective using direction of the antenna is the horizontal direction, and the gain in the horizontal direction directly influences the effective transmission distance of the antenna. The higher the gain of the antenna in the horizontal direction, the longer the transmission distance between the V2X devices, and the lower the energy consumption required for data interaction. Adopt the PCB panel of 10mm width to guarantee that the gain is average in the horizontal direction in this design, adopt dipole crosstalk principle to realize the stack of gain in the horizontal direction, the effectual gain that has accomplished in the horizontal direction reaches 6.45DB, this makes all directions transmission distance homoenergetic reach 2000 meters in the actual measurement.

Specifically, one end of the SMA connector 1, which is far away from the cable 2, is connected with a patch cord.

Specifically, as shown in fig. 6, the patch cord includes four types of SMA to SMA, SMA to TS-9, SMA to FAKRA, and SMA to IPEX/ECT. The SMA connector used in the antenna has the shape electrical length of 1/4 wavelength of 5880MHz of the center frequency of the antenna, and can play a role in choking the antenna. This makes the antenna suitable for use in different environments. The SMA connector of the antenna can be installed to all V2X devices in the market through four patch cords.

Specifically, the housing 5 is made of ABS material. The antenna is made of a common FR4 board, and the shell is made of an ABS material, so that the cost is low.

Specifically, the housing 5, the SMA joint 1 and the chock 6 form a closed space. The subassemblies are tightly installed to realize the waterproof function without affecting the transmission and reception of signals.

The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the technical scheme and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (9)

1. A high gain V2X antenna, comprising:

the shell is of a cylindrical hollow structure;

the SMA connector and the PCB are welded at two ends of the cable, the welded SMA connector is arranged on the inner wall of the shell, and the PCB is arranged in the shell;

the chock block is arranged far away from the SMA joint on the inner wall of the shell, and the end part of the chock block and the end part of the shell are on the same horizontal plane.

2. The high gain V2X antenna of claim 1, wherein the SMA contact comprises a housing, a center pin inserted in the housing, and a rotating head located on an outer wall of the housing, the center pin being wrapped with an insulating material.

3. The high-gain V2X antenna according to claim 2, wherein a core wire is disposed in the cable, one end of the core wire is soldered to the center pin, and the other end of the core wire is soldered to a pad on the PCB board.

4. The high-gain V2X antenna of claim 1, wherein the PCB board has foam attached to the inner wall of the housing.

5. The high gain V2X antenna according to claim 1, wherein the PCB board is a 132.5mm x 10mm FR4 board.

6. The high-gain V2X antenna according to claim 1, wherein a patch cord is connected to the SMA connector at an end remote from the cable.

7. The high-gain V2X antenna according to claim 6, wherein the patch cord includes four types, SMA-to-SMA, SMA-to-TS-9, SMA-to-FAKRA, and SMA-to-IPEX/ECT.

8. The high-gain V2X antenna according to claim 1, wherein the housing is made of ABS material.

9. The high-gain V2X antenna according to claim 1, wherein the housing, SMA joint, and the plug form a closed space.

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