An anti-jamming antenna structure for a V2X vehicle-mounted OBU

Abstract

This utility model discloses an anti-interference antenna structure for a V2X vehicle-mounted OBU, including a main body and a mounting plate inside the main body. Two antenna devices are mounted on one end of the mounting plate. One antenna device contains a loop antenna, and the other contains an F-shaped antenna. Bandpass filters are mounted on the sides of the antenna devices. This utility model separates different communication frequency bands by setting up the mounting plate and antenna devices separately in the upper left and upper right corners of the mounting plate. The F-shaped antenna and loop antenna help the antenna devices to better set up separate feed networks, reducing mutual signal interference. The Yagi antenna enhances directivity and improves communication with the device. The first and second metal shielding partitions effectively block electromagnetic coupling between antennas. The installation of different bandpass filters near the antenna devices further improves the anti-interference effect.

Description

Technical Field

[0001] This utility model relates to the field of anti-interference antenna technology, specifically an anti-interference antenna structure for a V2X vehicle-mounted OBU. Background Technology

[0002] Vehicle-to-everything (V2X) terminals are responsible for real-time information exchange between vehicles and between vehicles and roadside facilities. Their antenna systems need to support multiple signal links such as navigation, vehicle-to-vehicle communication, and vehicle-to-infrastructure communication within a limited space. As the density of vehicle-mounted electronic devices increases, the available installation space is further compressed, the physical spacing between antenna elements shrinks, and the probability of mutual interference increases significantly. The complex electromagnetic environment formed by components such as in-vehicle motors, switching power supplies, and instrument panels continuously leaks stray energy into the terminal, raising the noise floor of the receiving link and reducing link stability. Therefore, an anti-interference antenna structure for V2X vehicle-mounted OBUs is needed to meet people's needs. Utility Model Content

[0003] The purpose of this invention is to provide an anti-interference antenna structure for a V2X vehicle-mounted OBU to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-interference antenna structure for a V2X vehicle-mounted OBU, comprising a main body, an installation plate installed inside the main body, two antenna devices installed at one end of the installation plate, one antenna device containing a loop antenna and the other containing an F-shaped antenna, a bandpass filter installed on the side of the antenna devices, a first metal shielding plate on the side of the F-shaped antenna, a second metal shielding plate on the side of the loop antenna, and a Yagi antenna installed inside the installation plate.

[0005] Preferably, two limiting blocks are installed on the side of the mounting plate, and a limiting groove adapted to the limiting blocks is opened in the main body of the equipment.

[0006] Preferably, the side of the main body of the device is provided with a plurality of plug slots, and the side of the plug slots is provided with an electromagnetic shielding pad.

[0007] Preferably, a first socket is provided on the side of the main body of the device, and a second socket is provided at the end of the main body of the device near the first socket.

[0008] Preferably, an electromagnetic shielding adhesive ring is installed at the connection gap of the main body of the device.

[0009] Preferably, a plurality of mounting blocks are mounted on the side of the main body of the device, and the mounting blocks are provided with mounting holes.

[0010] Preferably, the F-shaped antenna is mounted at the upper left corner of the mounting plate, and the loop antenna is mounted at the upper right corner of the mounting plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) This utility model separates different communication frequency bands by setting up an installation plate and antenna equipment, and by arranging the antenna equipment separately in the upper left and upper right corners of the installation plate. The F-shaped antenna and the loop antenna help the antenna equipment to better set up a separate feed network and reduce mutual signal interference. The Yagi antenna enhances the directivity and better communicates with the equipment. The first metal shielding plate and the second metal shielding plate effectively block the electromagnetic coupling between the antennas. Different bandpass filters are installed near the antenna equipment to further improve the anti-interference effect.

[0013] (2) By setting electromagnetic shielding pads and electromagnetic shielding adhesive, this utility model installs electromagnetic shielding pads on the side of the plug slot when sealing the installation location of the plug slot, preventing electromagnetic interference from entering or passing through the shell through the holes. By installing electromagnetic shielding adhesive around the gaps of the main body of the device, the joints at the top and bottom are filled, ensuring the electromagnetic shielding performance of the main body of the device and improving the stability of the antenna device during operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an anti-interference antenna structure for a V2X vehicle-mounted OBU proposed in this utility model.

[0015] Figure 2 This is a schematic diagram of the mounting plate and limiting block of the anti-interference antenna structure for a VX vehicle-mounted OBU proposed in this utility model.

[0016] Figure 3 This is a schematic diagram of the antenna device and F-shaped antenna structure of the anti-interference antenna structure of the VX vehicle-mounted OBU proposed in this utility model.

[0017] In the diagram: 1. Main body of the equipment; 2. Mounting plate; 3. Antenna equipment; 4. Loop antenna; 5. F-shaped antenna; 6. Bandpass filter; 7. First metal shielding partition; 8. Second metal shielding partition; 9. Yagi antenna; 10. Limiting block; 11. Limiting groove; 12. Insertion groove; 13. Electromagnetic shielding pad; 14. First socket; 15. Second socket; 16. Electromagnetic shielding adhesive; 17. Mounting block; 18. Mounting hole. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1-3This utility model provides a technical solution: an anti-interference antenna structure for a V2X vehicle-mounted OBU, including a main body 1, a mounting plate 2 installed inside the main body 1, two antenna devices 3 installed at one end of the mounting plate 2, one antenna device 3 containing a loop antenna 4 and the other containing an F-shaped antenna 5, a bandpass filter 6 installed on the side of the antenna devices 3, a first metal shielding plate 7 on the side of the F-shaped antenna 5, a second metal shielding plate 8 on the side of the loop antenna 4, a Yagi antenna 9 installed inside the mounting plate 2, two limiting blocks 10 installed on the side of the mounting plate 2, a limiting groove 11 adapted to the limiting blocks 10 inside the main body 1, multiple mounting blocks 17 installed on the side of the main body 1, and mounting holes 18 on the mounting blocks 17, the F-shaped antenna 5 installed at the upper left corner of the mounting plate 2, and the loop antenna 4 installed at the upper right corner of the mounting plate 2. The side is installed in the limiting groove 11 of the main body 1 of the device by the limiting block 10, which limits the mounting plate 2 and prevents displacement during use. When installing the antenna device 3, the two antenna devices 3 of different frequency bands are installed on the left and right sides of the mounting plate 2 respectively. By optimizing the shape and size of the loop antenna 4, the radiation efficiency and bandwidth are improved. The F-shaped antenna 5 has the advantages of small size and easy integration. Installing the antenna device 3 in different positions can provide separate feed networks, so that the antenna device 3 has a certain degree of isolation. The directivity is enhanced by the Yagi antenna 9, which can better communicate with the device. The side of the antenna device 3 is equipped with a first metal shielding plate 7 and a second metal shielding plate 8, which can effectively block the electromagnetic coupling between the antenna devices 3. Different bandpass filters 6 are installed near the antenna device 3 to suppress interference signals of other frequency bands and further improve the anti-interference effect.

[0022] Example 2: Figure 1 and 2 As shown, multiple insertion slots 12 are installed on the side of the device body 1, and electromagnetic shielding pads 13 are installed on the side of the insertion slots 12. A ring of electromagnetic shielding adhesive 16 is installed at the connection gap of the device body 1. When sealing the installation location of the insertion slots 12, the electromagnetic shielding pads 13 are installed on the side of the insertion slots 12 to prevent electromagnetic interference from entering or passing through the housing through the holes. By installing the electromagnetic shielding adhesive 16 around the gap of the device body 1, the upper and lower connection seams are filled to ensure the electromagnetic shielding performance of the device body 1 and improve the stability of the antenna device 3 during operation. The remaining features are the same as in Embodiment 1.

[0023] The working principle is as follows: The side of the mounting plate 2 is installed in the limiting groove 11 of the main body 1 of the device by the limiting block 10, which limits the mounting plate 2 and prevents displacement during use. When installing the antenna device 3, the two antenna devices 3 of different frequency bands are installed on the left and right sides of the mounting plate 2 respectively. By optimizing the shape and size of the loop antenna 4, the radiation efficiency and bandwidth are improved. The F-shaped antenna 5 has the advantages of small size and easy integration. Installing the antenna device 3 in different positions can provide a separate feed network, so that the antenna device 3 has a certain degree of isolation. The directivity is enhanced by the Yagi antenna 9, which can better communicate with the device. The side of the antenna device 3... The device is equipped with a first metal shielding plate 7 and a second metal shielding plate 8, which can effectively block electromagnetic coupling between antenna devices 3. Different bandpass filters 6 are installed near the antenna devices 3 to suppress interference signals from other frequency bands and further improve the anti-interference effect. When encapsulating the mounting location of the plug slot 12, the electromagnetic shielding gasket 13 is installed on the side of the plug slot 12 to prevent electromagnetic interference from entering or passing through the housing through the holes. The electromagnetic shielding adhesive 16 is installed around the gaps of the device body 1 to fill the joints at the top and bottom, ensuring the electromagnetic shielding performance of the device body 1 and improving the stability of the antenna device 3 during operation.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-interference antenna structure for a V2X vehicle-mounted OBU, comprising a main body (1), characterized in that: The main body (1) of the device is equipped with a mounting plate (2). Two antenna devices (3) are installed at one end of the mounting plate (2). One antenna device (3) is equipped with a loop antenna (4) and the other antenna device (3) is equipped with an F-shaped antenna (5). A bandpass filter (6) is installed on the side of the antenna device (3). A first metal shielding plate (7) is provided on the side of the F-shaped antenna (5). A second metal shielding plate (8) is provided on the side of the loop antenna (4). A Yagi antenna (9) is installed in the mounting plate (2).

2. The anti-interference antenna structure for a V2X vehicle-mounted OBU according to claim 1, characterized in that: Two limiting blocks (10) are installed on the side of the mounting plate (2), and a limiting groove (11) adapted to the limiting blocks (10) is provided in the main body of the equipment (1).

3. The anti-interference antenna structure for a V2X vehicle-mounted OBU according to claim 1, characterized in that: The device body (1) has multiple plug slots (12) installed on its side, and electromagnetic shielding pads (13) are installed on the side of the plug slots (12).

4. The anti-interference antenna structure for a V2X vehicle-mounted OBU according to claim 1, characterized in that: The device body (1) has a first socket (14) on its side and a second socket (15) at one end of the device body (1) near the first socket (14).

5. The anti-interference antenna structure for a V2X vehicle-mounted OBU according to claim 1, characterized in that: An electromagnetic shielding adhesive (16) is installed at the connection gap of the main body (1) of the device.

6. The anti-interference antenna structure for a V2X vehicle-mounted OBU according to claim 1, characterized in that: Multiple mounting blocks (17) are installed on the side of the main body (1) of the equipment, and mounting holes (18) are provided on the mounting blocks (17).

7. The anti-interference antenna structure for a V2X vehicle-mounted OBU according to claim 1, characterized in that: The F-shaped antenna (5) is installed at the upper left corner of the mounting plate (2), and the loop antenna (4) is installed at the upper right corner of the mounting plate (2).

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