Car 5G Antenna

Abstract

The present invention discloses a vehicle-mounted 5G antenna, comprising: a first antenna unit and a second antenna unit; the first antenna unit comprises a first 5G antenna vibrator and a second 5G antenna vibrator; the second antenna unit comprises a third 5G antenna vibrator and a fourth 5G antenna vibrator; the first antenna unit is arranged outside the roof; the second antenna unit is arranged separately from the first antenna unit. The mature arrangement form satisfies the rationality of the assembly process and layout of the vehicle required by the main engine factory; at the same time, it has the advantages of better transceiver performance, low cost, mature arrangement process, easy installation and easy popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted antenna vibrators, and more specifically, to a vehicle-mounted 5G antenna. Background Art

[0002] The vehicle-mounted 5G antenna is a vehicle-mounted antenna vibrator product developed to adapt to the 5G communication frequency when mobile communication technology has developed to the fifth generation. It can be regarded as a continuation of the 4G antenna function. The 5G vehicle-mounted antenna vibrator receives 5G signals in space, thereby meeting the vehicle's information reception and transmission needs, and thus achieving a more comfortable, smarter and safer driving experience at the vehicle terminal.

[0003] The vehicle-mounted 5G antenna is a further extension of the 4G antenna with a wider frequency band and more antenna elements. As we all know, compared with the earlier 2 / 3G antenna elements, in addition to the expansion of the frequency band, the most important thing about the 4G antenna is the use of MIMO (multiple-input, multiple-output) technology. The number of antenna elements has been expanded from the original single antenna element to a dual antenna element. Now in the 5G era, its multiple-input, multiple-output technology has been further expanded, and the number of antenna elements has been further increased to 4 pairs of antenna elements (2 main and 2 auxiliary). Combined with the further widening of the frequency band and the 5G chip, a greater data throughput is achieved, thereby making communication faster.

[0004] An existing solution for vehicle-mounted 5G antennas is to integrate all four antenna elements into the shark fin antenna element. Due to the increase in the number of antenna elements, the size of this type of vehicle-mounted 5G antenna is larger, occupying more available space inside and outside the vehicle, affecting the assembly process of the entire vehicle. Often, the reserved installation space that automobile OEMs can provide for 5G vehicle-mounted antenna elements is very limited, so this solution is difficult for automobile OEMs to accept. In addition, it is difficult to design a large number of antenna elements integrated into a shark fin, and the performance of the antenna elements is difficult to guarantee. At the same time, the development cycle is long, resulting in high development costs.

[0005] Therefore, it is necessary to propose a vehicle-mounted 5G antenna that can meet the assembly process requirements of vehicle host manufacturers while reducing the overall design difficulty and development cost of the vehicle-mounted antenna vibrator. Summary of the invention

[0006] The purpose of the present invention is to propose a vehicle-mounted 5G antenna that meets the assembly process requirements of vehicle host manufacturers while reducing the overall design difficulty and development cost of the vehicle-mounted antenna vibrator.

[0007] To achieve the above object, the present invention proposes a vehicle-mounted 5G antenna, comprising: a first antenna unit and a second antenna unit;

[0008] The first antenna unit includes a first 5G antenna element and a second 5G antenna element;

[0009] The second antenna unit includes a third 5G antenna element and a fourth 5G antenna element;

[0010] The first antenna unit is arranged outside the roof;

[0011] The second antenna unit is arranged separately from the first antenna unit.

[0012] Optionally, the first antenna unit includes a first shell and a first bottom plate, the first shell and the first bottom plate cooperate to form a first cavity, a first circuit board is provided in the first cavity, and the first 5G antenna element and the second 5G antenna element are arranged on the first circuit board.

[0013] Optionally, the first antenna unit also includes a GPS antenna element, a first V2X antenna element and an AM / FM antenna element arranged on the first circuit board.

[0014] Optionally, the second antenna unit is arranged inside the dashboard of the vehicle or inside the rear spoiler; or,

[0015] When the vehicle roof is made of non-metallic material, the second antenna unit is arranged below the vehicle roof.

[0016] Optionally, the second antenna unit includes a second outer shell and a second bottom plate, the second outer shell and the second bottom plate cooperate to form a second cavity, a second circuit board is provided in the second cavity, and the third 5G antenna element and the fourth 5G antenna element are arranged on the second circuit board.

[0017] Optionally, any two of the first 5G antenna element, the second 5G antenna element, the third 5G antenna element and the fourth 5G antenna element are 5G main antenna elements, and the other two are 5G secondary antenna elements.

[0018] Optionally, the first shell is of shark fin type.

[0019] Optionally, it also includes an in-vehicle wiring harness group, which is arranged on the roof of the vehicle and is electrically connected to the main engine in the vehicle; the first antenna unit is electrically connected to the in-vehicle wiring harness group through the first wiring harness group, and the second antenna unit is electrically connected to the in-vehicle wiring harness group through the second wiring harness group.

[0020] Optionally, the in-vehicle wiring harness group, the first wiring harness group, and the second wiring harness group all include a plurality of coaxial lines and a plurality of connectors corresponding to the plurality of coaxial lines, and the gain loss of the coaxial lines and the connectors is less than 1 dB per meter.

[0021] Optionally, a second V2X antenna vibrator is further included, and the second V2X antenna vibrator is arranged inside the vehicle rearview mirror or inside the vehicle rear spoiler, and the second V2X antenna vibrator is electrically connected to the in-vehicle wiring harness group.

[0022] The beneficial effects of the present invention are:

[0023] By dividing the four 5G antenna elements into the first antenna unit and the second antenna unit, and separately arranging the first antenna unit in different areas of the vehicle, wherein the first antenna unit is arranged outside the roof, it can be similar to the existing vehicle-mounted 4G antenna solution. The host manufacturer does not need to change the original reserved space of the vehicle-mounted antenna element, which is easy to install. At the same time, the second antenna unit is separated from the first antenna unit and arranged in other areas of the vehicle (the host manufacturer's more mature layout form can be used). Therefore, it can meet the host manufacturer's requirements for the assembly process of the whole vehicle and the rationality of the whole vehicle layout; at the same time, the vehicle-mounted 5G antenna of this solution can use the existing mature design scheme, which has the advantages of better transmitting and receiving performance, low cost, mature layout process, easy installation and easy popularization.

[0024] The device of the present invention has other characteristics and advantages, which will be obvious from the drawings incorporated herein and the following detailed description, or will be described in detail in the drawings incorporated herein and the following detailed description, which together are used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which like reference numerals generally represent like components.

[0026] Figure 1 A schematic diagram of in-vehicle arrangement of a vehicle-mounted 5G antenna according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic structural diagram of a first antenna unit of a vehicle-mounted 5G antenna according to an embodiment of the present invention is shown.

[0028] Figure 3 A schematic diagram showing the structure of a second antenna unit of a vehicle-mounted 5G antenna according to an embodiment of the present invention is shown.

[0029] Description of reference numerals:

[0030] 1. First antenna unit; 2. Second antenna unit; 3. In-vehicle wiring harness group; 101. First 5G antenna vibrator; 102. Second 5G antenna vibrator; 103. First circuit board; 104. First outer shell; 105. First bottom plate; 106. GPS antenna vibrator; 107. First V2X antenna vibrator; 108. First wiring harness group; 109. Mounting card; 201. Third 5G antenna vibrator; 202. Fourth 5G antenna vibrator; 203. Second outer shell; 204. Second bottom plate; 205. Second circuit board; 206. Reinforced connecting plate; 207. Second wiring harness group. DETAILED DESCRIPTION

[0031] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0032] Figure 1 A schematic diagram of in-vehicle arrangement of a vehicle-mounted 5G antenna according to an embodiment of the present invention is shown.

[0033] like Figure 1 As shown, a vehicle-mounted 5G antenna according to the present invention includes: a first antenna unit 1 and a second antenna unit 2;

[0034] The first antenna unit 1 includes a first 5G antenna element 101 and a second 5G antenna element 102;

[0035] The second antenna unit 2 includes a third 5G antenna element 201 and a fourth 5G antenna element 202;

[0036] The first antenna unit 1 is arranged outside the roof;

[0037] The second antenna unit 2 is arranged separately from the first antenna unit 1 .

[0038] Specifically, refer to Figure 1, by dividing the four 5G antenna elements into the first antenna unit 1 and the second antenna unit 2, and separately setting the first antenna unit 1 in different areas of the vehicle, wherein the first antenna unit 1 is set outside the roof, which can be similar to the existing vehicle-mounted 4G antenna solution. The host manufacturer can leave the original vehicle-mounted antenna element reserved space unchanged, which is convenient for installation. At the same time, the second antenna unit 2 is separated from the first antenna unit 1 and set in other areas of the vehicle. In this embodiment, the second antenna unit 2 can be set inside the instrument panel or inside the rear spoiler and other areas. These areas are also relatively mature layout forms of the host manufacturer, so they can meet the host manufacturer's requirements for the assembly process of the whole vehicle and the rationality of the whole vehicle layout; at the same time, the vehicle-mounted 5G antenna of this solution can use the existing mature design scheme, which has the advantages of better transceiver performance, low cost, mature layout process, easy installation and easy popularization.

[0039] Furthermore, the more reasonable layout of the vehicle-mounted 5G antenna is to place the shark fin antenna with two 5G antenna elements on the top of the rear of the vehicle and continue to use the original mature antenna element layout, which has low risk and is easy for customers to accept. The other two 5G antenna elements can be placed inside the dashboard or inside the spoiler. These two positions are also the mature layout positions of the original vehicle-mounted 4G antennas, with mature technology and are easier to implement.

[0040] refer to Figure 2 In one example, the first antenna unit 1 includes a first shell 104 and a first base plate 105. The first shell 104 and the first base plate 105 cooperate to form a first cavity. A first circuit board 103 is provided in the first cavity. The first 5G antenna element 101 and the second 5G antenna element 102 are arranged on the first circuit board 103.

[0041] During the specific implementation, the first housing 104 is a shark fin type, the first circuit board 103 and the two 5G antenna vibrators are arranged in a closed cavity formed by the shark fin housing and the first bottom plate 105, the first bottom plate 105 and the first circuit board 103 are fixedly connected by multiple screws, and the bottom plate and the roof are fixedly connected by the mounting clamp 109. The first 5G antenna vibrator 101 and the second 5G antenna vibrator 102 are two pairs of 5G antenna vibrators arranged inside the shark fin. The first 5G antenna vibrator 101 and the second 5G antenna vibrator 102 are both plate-shaped antenna vibrators. The shape of the antenna vibrator can be appropriately bent according to the internal space to reduce the occupied space. The first 5G antenna vibrator 101 and the second 5G antenna vibrator 102 are respectively arranged at the front end and the rear end of the first circuit board 103 to ensure good isolation. Generally, it is preferred that the first 5G antenna vibrator 101 and the second 5G antenna vibrator 102 are in a main and a secondary form, and can also be arranged as two main antenna vibrators or two secondary antenna vibrators according to actual design requirements and the reserved space of the antenna vibrator. Preferably, the first antenna unit 1 can also use the original mature antenna vibrator layout to integrate the GPS antenna vibrator 106, the first V2X antenna vibrator 107 and the AM / FM antenna vibrator in the middle area of ​​the first circuit board 103. This approach has low risks and is easy for host manufacturers to accept. Figure 2 The first antenna element 101 and the second antenna element 102 are both plate antennas perpendicular to the upper surface of the first circuit board 103, and the first antenna element 101 is bent backward to adapt to the shape of the shark fin shell. The second antenna element 102 is an irregular plate antenna in a stepped bending shape, which increases the receiving area of ​​the antenna in a limited space while adapting to the shape of the shark fin shell.

[0042] Furthermore, in order to achieve external connection of the first antenna unit 1, the first antenna unit 1 also includes a wiring harness group corresponding to the multiple antenna elements on the first circuit board 103, one end of each coaxial line in the wiring harness group is electrically connected to the circuit of the corresponding antenna element on the circuit board, and the other end is provided with a corresponding connector.

[0043] In one example, reference Figure 3 The second antenna unit 2 includes a second housing 203 and a second bottom plate 204. The second housing 203 and the second bottom plate 204 cooperate to form a second cavity. A second circuit board 205 is disposed in the second cavity. The third 5G antenna element 201 and the fourth 5G antenna element 202 are disposed on the second circuit board 205. Preferably, the second antenna unit 2 is disposed inside the instrument panel or inside the rear spoiler. When the vehicle roof is made of non-metallic material, the second antenna unit can also be disposed under the vehicle roof.

[0044] Specifically, the second antenna unit 2 composed of the other two 5G antenna elements in the scheme of the present invention is preferably arranged inside the instrument panel or inside the spoiler. These two positions are also mature arrangements of the original 4G antenna, with mature technology and easy to implement. When the roof of the car is made of non-metallic material (which will not cause signal shielding), the second antenna unit 2 can also be arranged below the roof of the car, that is, at any position on the roof inside the car. In this embodiment, the second antenna unit 2 is arranged inside the instrument panel. The other two 5G antenna elements and the second circuit board 205 are arranged in the closed cavity formed by the second shell 203 and the second bottom plate 204. The second shell 203 (rectangular box shape) and the second bottom plate 204 can be fixedly connected by buckles or screws, and the second circuit board 205 and the base can be fixedly connected by limit columns or screws. The second bottom plate 204 can be fixedly connected to the car body by a reinforcing connecting plate 206. Generally, it is preferred that the first 5G antenna element 101 and the second 5G antenna element 102 are in a main and auxiliary form, and can also be arranged as two main antenna elements or two auxiliary antenna elements according to actual design requirements and the reserved space of the antenna element. That is, any two of the first 5G antenna element 101, the second 5G antenna element 102, the third 5G antenna element 201 and the fourth 5G antenna element 202 in the present invention are 5G main antenna elements, and the other two are 5G auxiliary antenna elements. Figure 3 In this embodiment, the third 5G antenna element 201 and the fourth 5G antenna element 202 are both PCB antennas (or metal antennas), and two antennas are formed by forming printed circuits of corresponding antenna elements on a second circuit board.

[0045] Furthermore, in order to achieve external connection of the second antenna unit 2, the second antenna unit 2 also includes a wiring harness group corresponding to the multiple antenna elements on the second circuit board 205, one end of each coaxial line in the wiring harness group is electrically connected to the circuit of the corresponding antenna element on the circuit board, and the other end is provided with a corresponding connector.

[0046] refer to Figure 1 The solution of the present invention also includes an in-vehicle wiring harness group 3. Preferably, the in-vehicle wiring harness group is arranged on the roof of the vehicle, and the in-vehicle wiring harness group is electrically connected to the in-vehicle host. The first antenna unit 1 is electrically connected to the in-vehicle wiring harness group 3 through the first wiring harness group 108, and the second antenna unit 2 is electrically connected to the in-vehicle wiring harness group 3 through the second wiring harness group 207.

[0047] During the specific implementation process, the in-vehicle wiring harness group 3 is arranged on the roof of the vehicle, and can be fixed to the in-vehicle roof by means of multiple buckles, and the in-vehicle wiring harness group 3 is electrically connected to the main engine in the vehicle. The in-vehicle wiring harness group 3 is connected to the first wiring harness group 108 and the second wiring harness group 207 in the setting area of ​​the first antenna unit 1 and the second antenna unit 2. The in-vehicle wiring harness group 3, the first wiring harness group 108, and the second wiring harness group 207 all include multiple coaxial lines and multiple connectors corresponding to the multiple coaxial lines. Since the 5G antenna vibrator has a higher frequency after expansion, reaching 5GHz, the difference from the 4G antenna is that the attenuation per unit length on the signal transmission line is greater, so when performing long-distance transmission, a high-frequency low-loss coaxial line and a high-frequency low-loss connector should be used. Preferably, the gain loss of the coaxial line and the connector is less than 1dB per meter to ensure that the signal will not be excessively attenuated during long-distance transmission, meeting the transceiver requirements of the antenna vibrator.

[0048] In one example, a second V2X antenna element (not shown) is also included. The second V2X antenna element is arranged inside the rearview mirror of the vehicle or inside the rear spoiler of the vehicle. The second V2X is electrically connected to the in-vehicle wiring harness group 3.

[0049] Specifically, due to the combination of smart driving and 5G, a V2X antenna vibrator position can be reserved in the car; preferably, V2X1 is integrated inside the shark fin, and the V2X2 antenna vibrator is arranged in the rearview mirror or spoiler to increase the scalability of the vehicle-mounted 5G antenna.

[0050] The embodiment of the present invention divides four pairs of 5G antenna vibrators into two parts for arrangement. Two pairs of 5G antenna vibrators are arranged in the shark fin antenna vibrator according to the existing 4G solution. The other functions are the same as the existing vehicle-mounted 4G antenna. This arrangement is based on the vehicle-mounted 4G antenna and is easier for customers to accept. The other two pairs of antenna vibrators are arranged inside the dashboard or the spoiler according to the existing built-in 4G solution. This arrangement is also a more mature arrangement in the parking lot. Whether from the assembly process of the whole vehicle or the rationality of the whole vehicle layout, the OEM is more likely to accept it. At the same time, with the existing mature arrangement scheme, more convenient installation can be achieved with minor changes, and better performance can be achieved at a lower cost.

[0051] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A vehicle-mounted 5G antenna, characterized in that: include: a first antenna unit and a second antenna unit; The first antenna unit includes a first 5G antenna element and a second 5G antenna element; The second antenna unit includes a third 5G antenna element and a fourth 5G antenna element; The first antenna unit is arranged outside the roof; The second antenna unit is arranged separately from the first antenna unit; The first antenna unit includes a first shell and a first bottom plate, the first shell cooperates with the first bottom plate to form a first cavity, a first circuit board is arranged in the first cavity, the first 5G antenna element and the second 5G antenna element are respectively arranged at two ends of the first circuit board; the first shell is a shark fin type; The second antenna unit includes a second shell and a second bottom plate, the second shell cooperates with the second bottom plate to form a second cavity, a second circuit board is arranged in the second cavity, and the third 5G antenna element and the fourth 5G antenna element are arranged at two ends of the second circuit board; The second antenna unit is arranged inside the dashboard of the vehicle or inside the rear spoiler; or, when the roof of the vehicle is made of non-metallic material, the second antenna unit is arranged below the roof of the vehicle; It also includes an in-vehicle wiring harness group, which is arranged on the roof of the vehicle and is electrically connected to the main engine in the vehicle; the first antenna unit is electrically connected to the in-vehicle wiring harness group through the first wiring harness group, and the second antenna unit is electrically connected to the in-vehicle wiring harness group through the second wiring harness group.

2. The vehicle-mounted 5G antenna according to claim 1, characterized in that: The first antenna unit also includes a GPS antenna element, a first V2X antenna element and an AM / FM antenna element arranged on the first circuit board, and the GPS antenna element, the first V2X antenna element and the AM / FM antenna element are arranged between the first 5G antenna element and the second 5G antenna element.

3. The vehicle-mounted 5G antenna according to claim 1, characterized in that: Any two of the first 5G antenna element, the second 5G antenna element, the third 5G antenna element and the fourth 5G antenna element are 5G main antenna elements, and the other two are 5G secondary antenna elements.

4. The vehicle-mounted 5G antenna according to claim 1, characterized in that: The in-vehicle wiring harness group, the first wiring harness group, and the second wiring harness group all include a plurality of coaxial lines and a plurality of connectors corresponding to the plurality of coaxial lines, and the gain loss of the coaxial lines and the connectors is less than 1 dB per meter.

5. The vehicle-mounted 5G antenna according to claim 1, characterized in that: It also includes a second V2X antenna vibrator, which is arranged inside the vehicle rearview mirror or inside the rear spoiler of the vehicle, and the second V2X antenna vibrator is electrically connected to the in-vehicle wiring harness group.

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