Printed circuit board, antenna assembly and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a printed circuit board, an antenna assembly and a vehicle. The printed circuit board comprises an antenna connecting part and a control connecting part; the antenna is grounded through a first grounding end corresponding to the antenna connecting part; the control assembly is grounded by controlling the second grounding end corresponding to the connecting part, and the first grounding end and the second grounding end are relatively insulated. Based on the above scheme, the double grounding ends which are insulated from each other are arranged, so that signals between the antenna and the grounding end of the control assembly cannot be mutually interfered, and the stability of vehicle positioning can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a printed circuit board, an antenna assembly and a vehicle. Background Art

[0002] The vehicle positioning system completes the positioning of the vehicle by sending and receiving signals through the GNSS (Global Navigation Satellite System) antenna. In the relevant technical solution, the antenna and the control component for controlling the antenna are electrically connected through a printed circuit board. However, the traditional antenna and the control component share a ground terminal. This solution easily causes resonance between the ground terminal of the antenna and the ground terminal of the control component, causing crosstalk, affecting the positioning stability. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a printed circuit board, an antenna assembly and a vehicle.

[0004] In a first aspect, the present application provides a printed circuit board, comprising:

[0005] Antenna connection part and control connection part;

[0006] The antenna is grounded via a first grounding terminal corresponding to the antenna connecting portion;

[0007] The control component is grounded through a second grounding terminal corresponding to the control connection portion, and the first grounding terminal is relatively insulated from the second grounding terminal.

[0008] Optionally, the antenna connecting portion further includes a first electrical connecting end;

[0009] The antenna is electrically connected to the first electrical connection end, and the first electrical connection end is electrically connected to the control component;

[0010] The first electrical connection end is relatively insulated from the first ground end.

[0011] Optionally, the printed circuit board further comprises at least one shielding cover;

[0012] The antenna connection part or the control connection part is arranged in the shielding cover.

[0013] Optionally, the printed circuit board further comprises at least one shielding cover;

[0014] The antenna connection part and the control connection part are arranged in different shielding covers.

[0015] Optionally, the first grounding terminal corresponding to the antenna connecting part or the second grounding terminal corresponding to the control connecting part is electrically connected to the shielding cover and is grounded through the shielding cover.

[0016] Optionally, the distance between the antenna connection part and the control connection part is greater than or equal to 8 mm.

[0017] Optionally, a distance between any one of the antenna connection portion and the control connection portion and an electronic component disposed on the printed circuit board is greater than or equal to 5 mm.

[0018] Optionally, the printed circuit board further includes a power amplifier circuit;

[0019] The power amplifier circuit is electrically connected between the antenna connecting portion and the antenna;

[0020] The stability coefficient of the power amplifier circuit is greater than 1.

[0021] In a second aspect, the present application further provides an antenna assembly, the antenna assembly comprising a printed circuit board as described in any one of the first aspects;

[0022] The antenna assembly also includes the antenna and the control assembly.

[0023] In a third aspect, the present application further provides a vehicle, comprising the antenna assembly as described in the second aspect.

[0024] The present application provides a printed circuit board, an antenna assembly and a vehicle. The printed circuit board includes an antenna connection part and a control connection part; the antenna is grounded through a first grounding terminal corresponding to the antenna connection part; the control assembly is grounded through a second grounding terminal corresponding to the control connection part, and the first grounding terminal and the second grounding terminal are relatively insulated. Based on the above scheme, the present application sets up mutually insulated double grounding terminals so that the signals between the grounding terminals of the antenna and the control assembly cannot crosstalk with each other, which is conducive to improving the stability of vehicle positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a printed circuit board provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of another printed circuit board structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0029] Figure 1 A schematic diagram of a printed circuit board structure provided in an embodiment of the present application, the printed circuit board comprises:

[0030] Antenna connection part 100 and control connection part 200 .

[0031] The antenna 300 is grounded via the first ground terminal 101 corresponding to the antenna connecting portion 100 .

[0032] The control component 400 is grounded via the second grounding terminal 201 corresponding to the control connection portion 200 , and the first grounding terminal 101 and the second grounding terminal 201 are relatively insulated from each other.

[0033] Specifically, the antenna connection part 100 is a functional component that can be used to achieve electrical connection with the antenna 300, for example, it can be a pad structure. In the embodiment of the present application, the multiple antennas 300 can be GNSS antennas. The control connection part 200 is a functional component that can be used to electrically connect the control component 400 to transmit signals. Like the antenna connection part 100, the control connection part 200 can also be a pad structure.

[0034] In the embodiment of the present application, although the antenna 300 and the control component 400 are both grounded through the printed circuit board, the corresponding grounding terminals (i.e., the first grounding terminal 101 and the second grounding terminal 201) are relatively insulated. The first grounding terminal 101 corresponding to the antenna 300 completes the overall stable grounding of the antenna 300, and the second grounding terminal 201 can eliminate the resonance generated by the control component 400 at the common ground node, thereby solving the problem of changes in the overall S parameters, and fundamentally ensuring the zero potential uniformity of the antenna 300 and the control component 400, so that the overall system performance remains stable. That is, the embodiment of the present application can improve the problem of poor positioning stability through the above solution.

[0035] Continue reading Figure 1 In some embodiments, the antenna connecting portion 100 further includes a first electrical connecting end 102 .

[0036] The antenna 300 is electrically connected to the first electrical connection end 102 , and the first electrical connection end 102 is electrically connected to the control component 400 .

[0037] The first electrical connection end 102 is relatively insulated from the first ground end 101 .

[0038] First of all, it should be noted that although the first grounding terminal 101, the second grounding terminal 201 and the first electrical connection terminal 102 are respectively defined in the embodiment of the present application, it does not mean that only the first electrical connection terminal 102 is a structure for realizing an electrical connection relationship. The first grounding terminal 101 and the second grounding terminal 201 are also structures for realizing an electrical connection relationship.

[0039] The antenna 300 can be electrically connected to the control component 400 through the first electrical connection terminal 102 (feeding point), so that the control component 400 can control the antenna 300 to send and receive signals to achieve positioning. In some embodiments, the second ground terminal 201 can also be called a wire harness terminal, that is, the second ground terminal 201 is electrically connected to the control component 400 by means of wire harness extension, that is, from a spatial position, what is directly connected to the second ground terminal 201 is a wire harness capable of transmitting signals, rather than the control component 400.

[0040] Figure 2 A schematic diagram of another printed circuit board structure provided in an embodiment of the present application. In some embodiments, the printed circuit board further includes at least one shielding cover 500 .

[0041] like Figure 2 As shown, a plurality of shielding covers 500 may be provided in the printed circuit board, and the shielding covers 500 may be used to protect the electronic components provided on the printed circuit board and to form an electrostatic shield to prevent the electronic components in the shielding covers 500 from being affected by static electricity or electromagnetic waves.

[0042] In some embodiments, the antenna connection part 100 or the control connection part 200 is disposed in the shielding cover 500 , and at least part of the electronic components and / or the wiring harness endpoints are disposed in the shielding cover 500 .

[0043] Among them, the electronic components may refer to other functional components in the printed circuit board, such as amplifiers, signal codecs, etc., and the wiring harness endpoints may refer to interfaces for electrically connecting the various electronic components in the printed circuit board, or electrically connecting the electronic components in the printed circuit board to other external devices. The interface may be in a welding form or a plug-in form. The embodiment of the present application may set the interface form of the wiring harness endpoint based on actual needs. If the wiring harness needs to be frequently plugged in and out, a wiring harness endpoint in a plug-in form may be used to facilitate the operator to plug and unplug the wiring harness. If the wiring harness does not need to be frequently plugged in and out, a wiring harness endpoint in a welding form may be used to further reduce the volume of the wiring harness endpoint. This is because the wiring harness endpoint in a plug-in form generally needs to be set in a specific shape to meet the needs of both fixing the wiring harness and disassembling the wiring harness, while the wiring harness endpoint in a welding form does not need to consider this problem. It only needs to use welding materials such as solder to fix the wiring harness. Therefore, the volume occupies a small amount, which is conducive to further reducing the volume of the wiring harness endpoint, and then to reducing the volume of the shielding cover 500, and finally achieving a reduction in the overall volume of the printed circuit board.

[0044] Continue reading Figure 2 , limited by certain factors, the surface area of ​​the printed circuit board may be smaller. For example, the printed circuit board used to assemble the GNSS antenna assembly is affected by the volume of the GNSS antenna assembly housing. In addition, the GNSS antenna assembly includes not only the printed circuit board and the antenna 300 body, but also other related components. Therefore, if the housing volume of the GNSS antenna assembly is small, it will be affected by various related factors and will also lead to a smaller volume of the printed circuit board.

[0045] In this case, if the antenna connection part 100 or the control connection part 200 occupies an area alone, the surface space of the printed circuit board may be more limited. In the embodiment of the present application, the antenna connection part 100 or the control connection part 200 may be exemplarily arranged in the shielding cover 500 to reduce the space occupied. In addition, due to the existence of the shielding cover 500, the influence of external electromagnetic signals on the first ground terminal 101 and the second ground terminal 201 may also be shielded by the shielding cover 500.

[0046] In some embodiments, the first ground terminal 101 corresponding to the antenna connection part 100 or the second ground terminal 201 corresponding to the control connection part 200 may be directly electrically connected to the shielding cover 500 and grounded through the shielding cover 500 .

[0047] In the embodiment of the present application, the first ground terminal 101 and the second ground terminal 201 need to be laid out with corresponding lines for grounding, and the above wiring will occupy the space of the printed circuit board to a certain extent, making the space of the printed circuit board more cramped. The more lines are laid out, the larger the space occupied. In the embodiment of the present application, the first ground terminal 101 and / or the second ground terminal 201 can also be directly electrically connected to the shielding cover 500. The shielding cover 500 itself can be used for grounding. When the shielding cover 500 is already grounded, the first ground terminal 101 and the second ground terminal 201 are directly electrically connected to their respective corresponding shielding covers 500, which can reduce wiring. This is because the first ground terminal 101 and the second ground terminal 201 are arranged in the shielding cover 500, and the distance between them and the shielding cover 500 itself can be considered to be low, so the length of the wiring can be greatly reduced, alleviating the space of the printed circuit board.

[0048] Through the above solution, the embodiment of the present application can reduce space occupation under the premise of setting up a double grounding solution.

[0049] In some embodiments, the antenna connection portion 100 and the control connection portion 200 are disposed in different shielding covers 500 .

[0050] Specifically, in the case where the surface area of ​​the printed circuit board is small, the embodiment of the present application can also set the antenna connection part 100 and the control connection part 200 in different shielding covers 500, and the different shielding covers 500 are relatively insulated. The setting of the antenna connection part 100 and the control connection part 200 in different shielding covers 500 described in the embodiment of the present application refers to setting the antenna connection part 100 and the control connection part 200 in the original shielding cover 500, rather than setting an additional shielding cover 500, so it does not conflict with the above-mentioned situation where the surface area of ​​the printed circuit board is small. That is, the embodiment of the present application can set the first grounding terminal 101 corresponding to the antenna 300 and the second grounding terminal 201 corresponding to the control component 400 in different shielding covers 500 respectively, instead of occupying part of the space of the printed circuit board alone, so as to free up space for other electronic components. As an optional solution, the embodiment of the present application can also directly electrically connect the first grounding terminal 101 and the second grounding terminal 201 to the different shielding covers 500 corresponding to each other, and ground them respectively through different shielding covers 500. In addition, due to the existence of the shielding cover 500 , the shielding cover 500 can also shield the first ground terminal 101 and the second ground terminal 201 from the influence of external electromagnetic signals.

[0051] In some embodiments, the distance between the antenna connection portion 100 and the control connection portion 200 is greater than or equal to 8 mm.

[0052] Specifically, the antenna connection part 100 and the control connection part 200 are generally pad structures, the antenna 300 (corresponding wiring harness) can be relatively fixed to the antenna connection part 100 by welding, and the control component 400 (corresponding wiring harness) can be relatively fixed to the control connection part 200 by welding.

[0053] During the welding of the antenna 300 or the control assembly 400, if the distance between the antenna connection part 100 and the control connection part 200 is too close, the welding may become loose due to excessive temperature. The embodiment of the present application has concluded through experiments that the distance between the antenna connection part 100 and the control connection part 200 can be greater than or equal to 8 mm. Under this solution, it can be ensured that the welding points corresponding to the antenna connection part 100 and the control connection part 200 will not be affected by each other's welding temperature and cause the welding to become loose, thereby ensuring the stability of the welding.

[0054] In some embodiments, the distance between any one of the antenna connection portion 100 and the control connection portion 200 and the electronic components disposed on the printed circuit board is greater than or equal to 5 mm.

[0055] Illustratively, when the surface area of ​​the printed circuit board is sufficient, the antenna connection part 100 and the control connection part 200 can be kept away from electronic components on other printed circuit boards to ensure that the distance between any one of the antenna connection part 100 and the control connection part 200 and the electronic components arranged on the printed circuit board is greater than or equal to 5 mm, so as to avoid mutual interference between the signals in the antenna connection part 100 and the control connection part 200 and the signals in other electronic components, thereby affecting the positioning effect of the antenna 300.

[0056] In some embodiments, the printed circuit board further includes a power amplifier circuit.

[0057] The power amplifier circuit is electrically connected between the antenna connection portion 100 and the antenna 300 .

[0058] The stability coefficient of the power amplifier circuit is greater than 1.

[0059] On the basis that the stability coefficient of the power amplifier circuit is greater than 1, the power amplifier circuit can achieve stable amplification of the signal corresponding to the antenna 300, thereby preventing the crosstalk of other signals from affecting the positioning effect of the antenna 300.

[0060] An embodiment of the present application further provides an antenna assembly, which includes a printed circuit board as described in any one of the above printed circuit board embodiments.

[0061] The antenna assembly also includes an antenna and a control assembly.

[0062] The antenna assembly provided in the embodiment of the present application has the same technical features as the above-mentioned printed circuit board embodiment, can solve the same technical problems as the above-mentioned printed circuit board, achieve the same technical effects, and has strong positioning stability.

[0063] As described in the above embodiment, the antenna assembly provided in the embodiment of the present application includes the above-mentioned printed circuit board, so that the antenna assembly can be suitable for a smaller printed circuit board without affecting the positioning effect, which is also conducive to making the antenna assembly smaller.

[0064] An embodiment of the present application also provides a vehicle, which includes the antenna assembly as described in the above embodiment.

[0065] As described in the above embodiments, the antenna assembly provided in the embodiments of the present application can be made smaller in size. Therefore, when the antenna assembly is installed in a vehicle, the assembly space can be freed up for other components.

[0066] For example, in the case of a shark fin-shaped antenna, if the antenna is smaller, the wind resistance it can bring will be smaller accordingly, so the overall wind resistance of the vehicle can be reduced, which is beneficial to improving the effective range of the vehicle. Under the premise of accurate positioning of the antenna component, the vehicle navigation can also be accurate, which is beneficial to improving user satisfaction.

[0067] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0068] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A printed circuit board, characterized in that: include: Antenna connection part and control connection part; The antenna is grounded via a first grounding terminal corresponding to the antenna connecting portion; The control component is grounded through a second grounding terminal corresponding to the control connection portion, and the first grounding terminal is relatively insulated from the second grounding terminal.

2. The printed circuit board according to claim 1, characterized in that: The antenna connection portion further includes a first electrical connection end; The antenna is electrically connected to the first electrical connection end, and the first electrical connection end is electrically connected to the control component; The first electrical connection end is relatively insulated from the first ground end.

3. The printed circuit board according to claim 1, characterized in that: The printed circuit board further comprises at least one shielding cover, in which at least part of the electronic components and / or the wiring harness endpoints are arranged; The antenna connection part or the control connection part is arranged in the shielding cover.

4. The printed circuit board according to claim 1, characterized in that: The printed circuit board further comprises at least one shielding cover, in which at least part of the electronic components and / or the wiring harness endpoints are arranged; The antenna connection part and the control connection part are arranged in different shielding covers.

5. The printed circuit board according to claim 3 or 4, characterized in that: The first grounding end corresponding to the antenna connection part or the second grounding end corresponding to the control connection part is electrically connected to the shielding cover and is grounded through the shielding cover.

6. The printed circuit board according to claim 1, characterized in that: The distance between the antenna connection part and the control connection part is greater than or equal to 8 mm.

7. The printed circuit board according to claim 1, characterized in that: A distance between any one of the antenna connection portion and the control connection portion and an electronic component disposed on the printed circuit board is greater than or equal to 5 mm.

8. The printed circuit board according to claim 1, characterized in that: The printed circuit board also includes a power amplifier circuit; The power amplifier circuit is electrically connected between the antenna connecting portion and the antenna; The stability coefficient of the power amplifier circuit is greater than 1.

9. An antenna assembly, characterized in that: The antenna assembly comprises a printed circuit board as claimed in any one of claims 1 to 8; The antenna assembly also includes the antenna and the control assembly.

10. A vehicle, characterized in that: The vehicle includes the antenna assembly of claim 9.

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