Multifunctional vehicle-mounted integrated antenna

Abstract

The utility model relates to a multifunctional vehicle-mounted integrated antenna. The antenna comprises a substrate assembly which comprises a first substrate, a second substrate and a third substrate which are arranged in sequence; the antenna assembly comprises a first 5G main antenna, a second 5G main antenna, a first 5G auxiliary antenna, a second 5G auxiliary antenna, a V2X antenna and a GNSS antenna, the first 5G main antenna and the first 5G auxiliary antenna are connected to the first substrate, the second 5G main antenna, the second 5G auxiliary antenna and the V2X antenna are connected to the third substrate, the GNSS antenna is connected to the second substrate, and the first 5G main antenna and the second 5G main antenna are combinations of metal oscillators and PCB oscillators. According to the 5G main antenna, the metal oscillator and the PCB oscillator are adopted, the problem that the area of a substrate is small can be effectively solved, the metal oscillator and the PCB oscillator can participate in radiation, the bandwidth is wide, the directivity is good, meanwhile, the PCB oscillator is provided with a matching circuit, and it can be guaranteed that polarization in the frequency band of the 5G antenna is vertical polarization; cost is effectively reduced, isolation between antennas is increased in the aspect of performance, and common-ground coupling is reduced.

Description

Technical Field

[0001] This utility model relates to automotive antenna technology, specifically to a multifunctional vehicle-mounted integrated antenna. Background Technology

[0002] The automotive antenna is an important component of the automotive communication system. It is responsible for receiving and transmitting wireless signals, enabling communication between the inside and outside of the vehicle.

[0003] With the rapid development of automotive intelligence, the demand for the number and performance of vehicle antennas is increasing, and the types of antennas required are also growing, including 5G communication, high-precision navigation (GNSS), V2X (Vehicle to Everything), satellite broadcasting (SDARS), and more. Therefore, a single antenna can no longer meet the usage requirements, nor can it satisfy the complex installation needs of the market. Traditional shark fin antennas have a limited number of internal antennas and limited space, and are prone to interference between antennas. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional vehicle-mounted integrated antenna.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A multi-functional vehicle-mounted integrated antenna includes a substrate assembly and an antenna assembly.

[0007] The substrate assembly includes a first substrate, a second substrate, and a third substrate, wherein the second substrate is disposed between the first substrate and the third substrate;

[0008] The antenna assembly includes a first 5G main antenna, a second 5G main antenna, a first 5G secondary antenna, a second 5G secondary antenna, a V2X antenna, and a GNSS antenna. The first 5G main antenna and the first 5G secondary antenna are connected to the first substrate. The second 5G main antenna, the second 5G secondary antenna, and the V2X antenna are connected to the third substrate. The GNSS antenna is connected to the second substrate. The first 5G main antenna and the second 5G main antenna are combinations of metal vibrators and PCB vibrators.

[0009] Preferably, in the above technical solution, the metal vibrator of the first 5G main antenna and the second 5G main antenna includes a vertical part and a horizontal part, the vertical part extends in the vertical direction, and the horizontal part extends in the horizontal direction; the PCB vibrator of the first 5G main antenna and the second 5G main antenna is soldered to the horizontal part.

[0010] Preferably, in the above technical solution, the first 5G main antenna and the second 5G main antenna are configured to be able to excite frequencies including 698-960MHz, 1700-2700MHz, and 3300-5000MHz.

[0011] Preferably, in the above technical solution, the first 5G main antenna and the first 5G secondary antenna, and the second 5G main antenna and the second 5G secondary antenna are centrally symmetrical.

[0012] Preferably, in the above technical solution, the first 5G sub-antenna, the second 5G sub-antenna, and the V2X antenna are metal vibrators.

[0013] Preferably, in the above technical solution, the first 5G sub-antenna and the second 5G sub-antenna are configured to excite frequencies including 1700-2700MHz and 3300-5000MHz.

[0014] Preferably, in the above technical solution, the V2X antenna is configured to excite a frequency of 5850-5925MHz.

[0015] Preferably, in the above technical solution, the V2X antenna is a Yagi antenna. The Yagi antenna is small in size, which can effectively improve the directional gain of the V2X antenna.

[0016] Preferably, in the above technical solution, the GNSS antenna is in the form of a loop antenna, and the GNSS antenna is located at the center of the second substrate to obtain a better axial ratio.

[0017] Preferably, in the above technical solution, the GNSS antenna and the second substrate are not grounded together.

[0018] Preferably, in the above technical solution, the antenna assembly is soldered onto the substrate assembly via a connector.

[0019] More preferably, the connector is a MiniFakra connector.

[0020] Preferably, in the above technical solution, the area of ​​the first substrate and the third substrate is greater than the area of ​​the second substrate.

[0021] Preferably, in the above technical solution, the first substrate and the third substrate have equal areas and are arranged symmetrically with respect to the second substrate.

[0022] Preferably, in the above technical solution, the antenna further includes a base, the first substrate, the second substrate, and the third substrate are fixed on the base, and there are gaps between the first substrate and the second substrate, and between the second substrate and the third substrate, which can effectively reduce costs and increase the isolation between antennas in terms of performance, reducing common ground coupling.

[0023] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0024] 1. The 5G main antenna of this utility model adopts a combination of metal vibrator and PCB vibrator, which can effectively solve the problem of small substrate area. Both metal vibrator and PCB vibrator can participate in radiation, with wide bandwidth and good directivity. At the same time, there is a matching circuit on the PCB vibrator, which can ensure that the polarization within the 5G antenna frequency band is vertical polarization.

[0025] 2. This utility model is divided into three independent substrates, which can effectively reduce costs compared to a single long substrate. At the same time, it increases the isolation between antennas and reduces common ground coupling in terms of performance.

[0026] 3. The overall layout of this utility model is compact and cost-effective. Attached Figure Description

[0027] Appendix Figure 1 This is a schematic diagram of the assembly structure of the utility model;

[0028] Appendix Figure 2 This is a schematic diagram of the disassembled structure of the utility model.

[0029] In the attached diagrams above:

[0030] 1. Base;

[0031] 20. First substrate; 21. Second substrate; 22. Third substrate;

[0032] 300, First 5G main antenna; 301, Second 5G main antenna; 30a, Vertical part; 30b, Horizontal part; 30c, PCB vibrator; 310, First 5G secondary antenna; 311, Second 5G secondary antenna; 32, V2X antenna; 33, GNSS antenna;

[0033] 4. Connector. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] like Figure 1 , 2 The illustrated multi-functional vehicle-mounted integrated antenna includes a base 1, a substrate assembly, and an antenna assembly. The substrate assembly is connected within the base 1, and the antenna assembly is connected to the substrate assembly. Specifically:

[0037] The substrate assembly includes a first substrate 20, a second substrate 21, and a third substrate 22. All three substrates are PCBs and can be fixed to the base 1 with screws. The second substrate 21 is positioned between the first substrate 20 and the third substrate 22. In the diagram, the first substrate 20, second substrate 21, and third substrate 22 are arranged sequentially from left to right, with gaps between them. This effectively reduces costs and improves antenna isolation, reducing grounding coupling.

[0038] The areas of the first substrate 20 and the third substrate 22 are larger than the area of ​​the second substrate 21. Preferably, the areas of the first substrate 20 and the third substrate 22 are equal and symmetrically arranged with respect to the second substrate 21. In this embodiment, the first substrate 20 and the third substrate 22 are specifically 108*68mm PCB boards, and the second substrate 21 is a 68*68mm PCB board.

[0039] The antenna assembly includes a first 5G main antenna 300, a second 5G main antenna 301, a first 5G secondary antenna 310, a second 5G secondary antenna 311, a V2X antenna 32, and a GNSS antenna 33, for a total of six antennas. Among them:

[0040] The first 5G main antenna 300 is connected to the first substrate 20, and the second 5G main antenna 310 is connected to the third substrate 22. Both the first 5G main antenna 300 and the second 5G main antenna 310 adopt a PIFA antenna configuration. Due to the small area of ​​the PCB ground plane, the first 5G main antenna 300 and the second 5G main antenna 310 are a combination of a metal vibrator and a PCB vibrator. This combination of metal and PCB vibrators effectively solves the problem of small substrate area. Both the metal and PCB vibrators can participate in radiation, resulting in a wide bandwidth and good directivity. Furthermore, the PCB vibrator has a matching circuit to ensure that the polarization within the 5G antenna band is vertically polarized. Specifically:

[0041] The metal vibrator of the first 5G main antenna 300 and the second 5G main antenna 301 includes a vertical part 30a and a horizontal part 30b. The vertical part 30a extends in the vertical direction and the horizontal part 30b extends in the horizontal direction. The PCB vibrator 30c of the first 5G main antenna 300 and the second 5G main antenna 301 is welded to the horizontal part 30b.

[0042] In this embodiment, the first 5G main antenna 300 and the second 5G main antenna 301 are configured to excite three frequency bands including 698-960MHz, 1700-2700MHz, and 3300-5000MHz.

[0043] The first 5G sub-antenna 310 is connected to the first substrate 20, and the second 5G sub-antenna 311 is connected to the third substrate 22. In the figure, the first 5G main antenna 300, the first 5G sub-antenna 310, the second 5G main antenna 301, and the second 5G sub-antenna 311 are centrally symmetrical. The first 5G sub-antenna 310 and the second 5G sub-antenna 311 are metal vibrators.

[0044] In this embodiment, the first 5G sub-antenna 310 and the second 5G sub-antenna 311 are configured to excite two frequency bands including 1700-2700MHz and 3300-5000MHz.

[0045] The V2X antenna 32 is also connected to the third substrate 22. The V2X antenna 32 is a metal vibrator. The V2X antenna is a Yagi antenna, which is small in size and can effectively improve the directional gain of the V2X antenna.

[0046] In this embodiment, the V2X antenna is configured to excite frequencies of 5850-5925MHz.

[0047] The GNSS antenna 33 is connected to the second substrate 21. The GNSS antenna 33 is a loop antenna, and the GNSS antenna 33 is not grounded with the second substrate 21. The GNSS antenna 33 is located at the center of the second substrate 21 to obtain a better axial ratio.

[0048] In this embodiment, the antenna assembly is soldered onto the substrate assembly via connector 4, which is a MiniFakra connector. That is, after the metal vibrators of the first 5G main antenna 300 and the second 5G main antenna 301 are soldered to the PCB vibrators, they are then soldered onto the first substrate 20 and the third substrate 22 via connector 4 to output 5G signals. The first 5G secondary antenna 310, the second 5G secondary antenna 311, and the V2X antenna 32 are directly soldered onto the first substrate 20, the third substrate 21, and the second substrate 22 via metal vibrators and loop antennas.

[0049] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multifunctional vehicle-mounted integrated antenna, comprising a substrate assembly and an antenna assembly, characterized in that: The substrate assembly includes a first substrate, a second substrate, and a third substrate, wherein the second substrate is disposed between the first substrate and the third substrate; The antenna assembly includes a first 5G main antenna, a second 5G main antenna, a first 5G secondary antenna, a second 5G secondary antenna, a V2X antenna, and a GNSS antenna. The first 5G main antenna and the first 5G secondary antenna are connected to the first substrate. The second 5G main antenna, the second 5G secondary antenna, and the V2X antenna are connected to the third substrate. The GNSS antenna is connected to the second substrate. The first 5G main antenna and the second 5G main antenna are combinations of metal vibrators and PCB vibrators.

2. The multi-functional vehicle-mounted integrated antenna according to claim 1, characterized in that: The metal vibrators of the first and second 5G main antennas include a vertical part and a horizontal part. The vertical part extends in a vertical direction, and the horizontal part extends in a horizontal direction. The PCB vibrators of the first and second 5G main antennas are soldered to the horizontal part.

3. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The first and second 5G main antennas are configured to excite frequencies including 698-960MHz, 1700-2700MHz, and 3300-5000MHz.

4. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The first 5G main antenna and the first 5G secondary antenna, as well as the second 5G main antenna and the second 5G secondary antenna, are centrally symmetrical.

5. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The first 5G sub-antenna, the second 5G sub-antenna, and the V2X antenna are metal vibrators.

6. The multi-functional vehicle-mounted integrated antenna according to claim 1 or 5, characterized in that: The first and second 5G sub-antennas are configured to excite frequencies including 1700-2700MHz and 3300-5000MHz.

7. The multi-functional vehicle-mounted integrated antenna according to claim 1 or 5, characterized in that: The V2X antenna is configured to excite frequencies of 5850-5925MHz.

8. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The V2X antenna is a Yagi antenna.

9. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The GNSS antenna is a loop antenna and is located at the center of the second substrate. The GNSS antenna and the second substrate are not grounded together.

10. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The antenna assembly is soldered onto the substrate assembly via a connector; The connector mentioned is a MiniFakra connector.

11. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The areas of the first substrate and the third substrate are larger than the area of ​​the second substrate; The first and third substrates have equal areas and are arranged symmetrically to the second substrate.

12. The multifunctional vehicle-mounted integrated antenna according to claim 1, characterized in that: The antenna also includes a base, and the first substrate, the second substrate, and the third substrate are fixed on the base, with gaps between the first substrate and the second substrate, and between the second substrate and the third substrate.

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