Mainboard with onboard antenna and wireless communication equipment

Abstract

The utility model provides a mainboard with an onboard antenna and a wireless communication device. The mainboard with the onboard antenna comprises a circuit board and the onboard antenna printed on the circuit board. The circuit board is provided with an upper surface and a lower surface, and the upper surface and the lower surface respectively refer to two side surfaces in the thickness direction of the circuit board; the onboard antenna comprises an upper surface layer support arm and a lower surface layer support arm, the upper surface layer support arm is printed on the upper surface of the circuit board, and the lower surface layer support arm is printed on the lower surface of the circuit board; moreover, in order to connect the upper surface layer support arm and the lower surface layer support arm, the middle part of the circuit board is provided with a through hole corresponding to the onboard antenna, and the upper surface layer support arm and the lower surface layer support arm are connected through the through hole to form a complete radiator. The antenna branches on the upper surface and the lower surface of the circuit board are connected through the through hole in the middle of the circuit board, so that the width of the onboard antenna is expanded under the condition of occupying the same space on the surface of the circuit board, the bandwidth of the onboard antenna is further effectively expanded, the performance of the onboard antenna is improved, the signal quality of related equipment is improved, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and further to a mainboard with an onboard antenna and a wireless communication device. Background Art

[0002] The onboard antenna is widely used in smart home, Internet of Things and other fields due to its simple structure, strong anti-interference ability and high antenna efficiency, such as POS machines, dictionary pens, etc.

[0003] In the related art, the efficiency of the onboard antenna is affected by the antenna environment, printing area, etc., and its layout on the circuit board will significantly affect the communication effect of the device. In this regard, the inventor believes that optimizing the layout design of the onboard antenna and improving its communication effect after installation on the device will have a profound impact on the development of the onboard antenna industry and improve the signal quality of the corresponding equipment. Utility Model Content

[0004] The purpose of this application is to provide a motherboard with an onboard antenna, which, through reasonable antenna design, is used to improve the communication effect after the onboard antenna is installed on the device, enhance the signal quality of related devices, and improve the user experience.

[0005] The technical solutions provided by this application are as follows:

[0006] The present application provides a mainboard with an onboard antenna, comprising:

[0007] The circuit board comprises an upper surface and a lower surface located on both sides of the circuit board in a thickness direction;

[0008] The onboard antenna comprises an upper surface support arm and a lower surface support arm, wherein the upper surface support arm and the lower surface support arm are respectively printed on the upper and lower surfaces of the circuit board;

[0009] A plurality of through holes are provided on the circuit board, wherein the plurality of through holes are arranged in sequence along the routing direction of the onboard antenna on the surface of the circuit board; the upper surface support arm and the lower surface support arm are connected through the through holes to form a complete radiator.

[0010] A mainboard with an onboard antenna provided by the present application is provided with a through hole at a position corresponding to the onboard antenna on the circuit board, and the onboard antenna branches on the upper and lower surfaces of the circuit board are connected through the through hole to form a complete radiator. Under the condition of meeting the same routing width on the surface of the circuit board, the circuit board surface space required for the antenna routing is effectively saved; this is equivalent to expanding the width of the onboard antenna while keeping the width of the circuit board unchanged, thereby effectively expanding the bandwidth of the onboard antenna, improving the antenna performance, and ensuring the signal strength of the corresponding equipment.

[0011] In some embodiments, the onboard antenna is printed on an edge of the circuit board.

[0012] A mainboard with an onboard antenna provided by the present application has the best clearance at the edge of the circuit board after it is installed in the device. By printing the onboard antenna on the edge of the circuit board, the probability of environmental media such as the display screen in the device affecting the impedance of the onboard antenna is reduced. The efficiency of the onboard antenna can be easily maximized, effectively ensuring the communication effect of the onboard antenna in the device, thereby helping to improve the signal quality of the corresponding device and enhance the user experience.

[0013] In some embodiments, the through hole is arranged at a position corresponding to the width direction of the onboard antenna and close to the edge of the circuit board.

[0014] A main board with an onboard antenna provided by the present application has a perforation arranged at a position close to the edge of the circuit board in the width direction of the onboard antenna. On the one hand, it helps to expand the width dimension of the onboard antenna as much as possible, that is, to obtain the widest equivalent antenna width within the limited board space; on the other hand, it helps to further promote the setting of the onboard antenna close to the edge of the circuit board.

[0015] In some embodiments, the through-hole comprises a plurality of through-holes, and the plurality of through-holes are closely arranged along the routing direction of the on-board antenna on the surface of the circuit board.

[0016] In a mainboard with a board-mounted antenna provided by the present application, the upper surface arm and the lower surface arm are connected by a plurality of closely arranged through holes, which helps to improve the stability of the installation of the board-mounted antenna on the circuit board; at the same time, it helps to improve the structural strength of the circuit board, thereby effectively ensuring the performance of the mainboard with the board-mounted antenna.

[0017] In some embodiments, the upper surface support arm and the lower surface support arm are symmetrically arranged on the upper and lower surfaces of the circuit board.

[0018] Through the main board with a board-mounted antenna provided by the present application, the upper surface arm and the lower surface arm are symmetrically arranged on the upper and lower surfaces of the circuit board, which is convenient for connecting the upper surface arm and the lower surface arm, effectively improving the production convenience of the main board with a board-mounted antenna, and thus effectively saving the production cost of the enterprise.

[0019] In some embodiments, the tail end of the upper surface layer support arm or the tail end of the lower surface layer support arm is routed on a single side on the corresponding upper and lower surfaces of the circuit board.

[0020] A motherboard with a board-mounted antenna provided by the present application, during actual production, since cutting the antenna will increase its frequency, for the convenience and accuracy of debugging, the 1-2mm trace at the tail end of the board-mounted antenna can be routed on a single side, and the excess length can be cut when adjustment is required, thereby reducing the number of times the cover plate is triggered by antenna debugging, and effectively improving the production convenience of the motherboard with a board-mounted antenna.

[0021] In some embodiments, the upper surface arm and / or the lower surface arm of the onboard antenna is a planar inverted F-shaped antenna.

[0022] A mainboard with a board-mounted antenna provided by the present application has a simple inverted F-shaped antenna structure, light weight, conformability, and high radiation efficiency. The onboard antenna is designed to be a planar inverted F-shaped antenna, which helps to reduce the production cost of the mainboard with the board-mounted antenna while ensuring its communication effect, thereby benefiting enterprises in saving energy and reducing costs.

[0023] In some embodiments, the onboard antenna has a GND pin and a feed point that are arranged parallel to each other.

[0024] In some embodiments, the distance of the GND pin relative to the feed point is adjustable.

[0025] Through the mainboard with a onboard antenna provided by the present application, the GND pin helps to establish a common ground for the mainboard power supply and the Arduino / microcontroller; since the feeding point position is relatively fixed, the frequency resonance point can be changed by adjusting the distance between the GND pin and the feeding point, and the adjustment operation is simple.

[0026] On the other hand, the present application also provides a wireless communication device, comprising any of the above-mentioned mainboards with onboard antennas.

[0027] Compared with the prior art, the motherboard with an onboard antenna and the wireless communication device provided by the present application have at least one of the following beneficial effects:

[0028] 1. In the present application, a through hole is provided at a position corresponding to the onboard antenna on the circuit board, and the through hole is provided at a position on the circuit board corresponding to the onboard antenna in the width direction close to the edge of the circuit board, and the connecting parts of the onboard antenna branches on the upper and lower surfaces of the circuit board are arranged in the through hole, that is, the onboard antenna branches on the upper and lower surfaces of the circuit board are connected through the through hole to form a complete radiator, thereby replacing the technical solution in the related art of connecting the onboard antenna branches on the upper and lower surfaces of the circuit board around the edge of the circuit board; under the condition of meeting the same wiring width on the circuit board surface, the circuit board surface space required for the antenna wiring is effectively saved, and it is also helpful to promote the miniaturization development of the corresponding equipment; in other words, this design method helps the onboard antenna to obtain the widest equivalent antenna width within the limited board space, thereby effectively expanding the bandwidth of the onboard antenna and improving the antenna performance.

[0029] 2. In the present application, the onboard antenna is printed on the edge of the circuit board. After the motherboard with the onboard antenna is installed in the corresponding wireless communication device, the edge of the circuit board has the best clearance and is as far away from interference sources and other unfavorable factors as possible, so that the efficiency of the onboard antenna can be easily maximized, effectively ensuring the communication effect after the onboard antenna is installed in the device, thereby effectively improving the signal quality of the corresponding device and ensuring the user experience.

[0030] 3. In the present application, by closely arranging a plurality of perforations along the routing direction of the onboard antenna on the surface of the circuit board, a stable connection between the upper surface arm and the lower surface arm of the onboard antenna is achieved, while effectively ensuring the structural strength of the motherboard with the onboard antenna, effectively extending its service life, thereby reducing the user's usage cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present solution.

[0032] Figure 1 It is a cross-sectional view of an embodiment of the present application mainly showing the arrangement of the onboard antenna on the circuit board;

[0033] Figure 2 It is a cross-sectional view mainly showing the layout method of the onboard antenna on the circuit board in the related art;

[0034] Figure 3 The embodiment of the present application mainly embodies a top view of the position of the through hole on the circuit board.

[0035] Description of reference numerals:

[0036] 1. Circuit board; 11. Upper surface; 12. Lower surface; 13. Perforation; 2. Onboard antenna; 21. Upper surface arm; 22. Lower surface arm; 23. GND pin; 24. Feed point. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0038] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0039] At present, in the field of wireless communication, the onboard antenna 2 occupies a large share in many relatively simple communication devices (such as some WIFI and BT devices) due to its simple structure, stable performance, and low cost. In the related technology, the specific layout design of the onboard antenna on the circuit board and the installation position in the wireless communication device will significantly affect the communication effect of the device. Therefore, how to optimize the layout design of the onboard antenna and improve its communication effect after installation in the device has become the main research direction of the onboard antenna industry, which will have a profound impact on the development of the onboard antenna industry.

[0040] In this regard, refer to the accompanying drawings of the specification Figure 1 and Figure 3 In one embodiment, a motherboard with an onboard antenna is provided. By rationally arranging the onboard antenna, the communication effect of the corresponding device is significantly improved, the signal quality is improved, and the user experience is improved. Specifically, the motherboard with the onboard antenna includes a circuit board 1 and an onboard antenna 2 printed on the circuit board 1; wherein the circuit board 1 has an upper surface 11 and a lower surface 12. In this embodiment of the present application, the upper surface 11 and the lower surface 12 refer to the two side surfaces of the circuit board 1 in the thickness direction respectively; the onboard antenna 2 includes an upper surface support arm 21 and a lower surface support arm 22, the upper surface support arm 21 is printed on the upper surface 11 of the circuit board 1, and the lower surface support arm 22 is printed on the lower surface 12 of the circuit board 1; and, in order to connect the upper surface support arm 21 and the lower surface support arm 22, a through hole 13 is opened in the middle of the circuit board 1 corresponding to the onboard antenna 2, and the upper surface support arm 21 and the lower surface support arm 22 are connected through the through hole 13 to form a complete radiator.

[0041] Using this method to lay out the antenna, refer to Figure 2Compared with the technical solution in the related art that the branches of the onboard antenna 2 on the upper surface 11 and the lower surface 12 of the circuit board 1 are connected around the edge of the circuit board 1, the technical solution of this embodiment of the present application is to open a through hole 13 on the circuit board 1 at the position corresponding to the onboard antenna 2, and set the connecting part of the upper surface branch arm 21 and the lower surface branch arm 22 of the onboard antenna 2 in the through hole 13, so as to realize the connection of the line between the upper surface branch arm 21 and the lower surface branch arm 22 of the onboard antenna 2, and effectively save the surface space of the circuit board 1 required for the antenna routing under the condition of meeting the same routing width on the surface of the circuit board 1; in other words, the antenna layout method of this embodiment of the present application enables the onboard antenna 2 to be laid with a larger width dimension under the condition of occupying the same space on the surface of the circuit board 1, that is, under the condition of ensuring that the width of the circuit board 1 remains unchanged, the width dimension of the onboard antenna 2 is increased, the area of ​​the onboard antenna 2 is expanded, and the bandwidth of the onboard antenna 2 is effectively expanded, thereby improving the performance of the onboard antenna 2.

[0042] In one embodiment, based on the above embodiment, specifically, referring to Figure 1 and Figure 3 In order to obtain the widest equivalent antenna width in a limited board space, in this embodiment of the present application, a through hole 13 is opened on the circuit board 1 at a position close to the edge of the circuit board 1 in the width direction of the onboard antenna 2. At the same time, in order to ensure the structural strength of the circuit board 1 and the connection stability of the onboard antenna 2 on the circuit board 1, and to extend the service life of the motherboard with the onboard antenna, in this embodiment of the present application, a plurality of through holes 13 are opened on the circuit board 1, and the plurality of through holes 13 are closely arranged along the routing direction of the onboard antenna 2 on the surface of the circuit board 1, and the connection parts of the upper surface support arm 21 and the lower surface support arm 22 are respectively embedded in the circuit board 1 at the corresponding sides of the circuit board 1 until the two are stably connected. Refer to Figure 1 In order to achieve stable conduction of the circuit of the onboard antenna 2, the portion of the lower surface support arm 22 extending into the circuit board 1 is embedded in the portion of the upper surface support arm 21 extending into the circuit board 1, and the two are tightly fitted. Of course, if it can be ensured that the upper surface support arm 21 and the lower surface support arm 22 are stably fitted to the corresponding upper surface 11 and lower surface 12 of the circuit board, the end of the portion of the upper surface support arm 21 extending into the circuit board 1 and the end of the portion of the lower surface support arm 22 extending into the circuit board 1 can also be set to directly abut. In the embodiments of the present application, there is no specific restriction on the connection form of the portion of the upper surface support arm 21 extending into the circuit board 1 and the portion of the lower surface support arm 22 extending into the circuit board 1, and the connection form of the two should not be used as a limitation on the protection scope of the present application.

[0043] Further, see Figure 3In this embodiment of the present application, the onboard antenna 2 is printed on the edge of the circuit board 1, so that after the motherboard with the onboard antenna is installed in the corresponding device, it is far away from interference sources such as the display screen, so as to achieve the highest efficiency, ensure the communication effect of the onboard antenna 2 in the device, and improve the signal quality of the corresponding wireless communication device. At the same time, during the active test phase, the onboard antenna 2 will be far away from interference sources such as the display screen, which will reduce interference and improve sensitivity.

[0044] Reference Figure 3 In this embodiment of the present application, the upper surface support arm 21 and the lower surface support arm 22 are symmetrically arranged on the upper surface 11 and the lower surface 12 of the circuit board 1, that is, the upper surface support arm 21 and the lower surface support arm 22 are symmetrically arranged on the upper surface 11 and the lower surface 12 of the circuit board 1, so that the upper surface support arm 21 and the lower surface support arm 22 are connected through the position of the perforation 13. Of course, since the length of the antenna determines the frequency of the antenna, in actual production, for the convenience of debugging, in the embodiment of the present application, the tail end of the upper surface support arm 21 or the tail end of the lower surface support arm 22 can also be arranged at 1-2mm at the corresponding position of the upper surface 11 and the lower surface 12 of the circuit board 1 for single-sided routing; during the debugging operation, after the remaining positions of the upper surface support arm 21 and the lower surface support arm 22 are aligned, the excess length of the tail end is cut to achieve the calibration of the frequency of the onboard antenna 2, which helps to reduce the difficulty of the corresponding calibration operation and improve the production convenience of the motherboard with the onboard antenna.

[0045] In addition, in this embodiment of the present application, in order to further improve the production convenience of the motherboard with the onboard antenna and promote energy saving and cost reduction of the enterprise, the onboard antenna 2 can be set as a planar inverted F-shaped antenna, that is, the upper surface support arm 21 and / or the lower surface support arm 22 of the onboard antenna 2 are set to be a planar inverted F shape; for example, referring to Figure 3 , only the lower surface support arm 22 printed on the lower surface 12 of the circuit board 1 is provided in a plane inverted F shape. Figure 3 Specifically, the end of the onboard antenna 2 away from the tail end thereof has a GND pin 23 (wire grounding terminal) and a feed point 24 arranged in parallel with each other. Preferably, in this embodiment of the present application, the distance between the GND pin 23 and the feed point 24 is adjustable to change the frequency resonance point.

[0046] The following is a further detailed discussion of the technical solution of the present application by taking the circuit board 1 and the onboard antenna 2 installed in a wireless communication device as an example. Figure 1 , Figure 2 and Figure 3A wireless communication device, comprising the mainboard with the onboard antenna described in any of the above embodiments, and also comprising a housing, the housing comprising an upper housing and a lower housing that are buckled together, and specifically, a display screen is disposed on the upper housing. In this embodiment of the present application, preferably, the upper housing and the lower housing are detachably buckled by screws, and the axial direction of the screws, i.e., the buckling direction of the upper housing and the lower housing is perpendicular to the display screen, and the display screen is detachably disposed on the upper housing by means of foam glue; and the mainboard with the onboard antenna is installed in the installation space, and the mainboard with the onboard antenna is disposed substantially parallel to the display screen.

[0047] The implementation principle of the embodiment of the present application is as follows: after the mainboard with the onboard antenna is installed in the installation space, since the onboard antenna 2 is arranged at the edge of the circuit board 1, this position has the best clearance and is as far away from interference sources and other unfavorable factors as possible, the efficiency of the antenna can be easily maximized; at the same time, since the perforation 13 for the connection part of the upper surface support arm 21 and the lower surface support arm 22 of the onboard antenna 2 is provided at a position on the circuit board 1 corresponding to the width direction of the onboard antenna 2 close to the edge of the circuit board 1, while saving the installation space on the circuit board 1, the onboard antenna 2 obtains the widest equivalent antenna width in the limited space of the circuit board 1; in this way, the communication effect after the onboard antenna 2 is installed in the wireless communication equipment is effectively guaranteed, the signal quality of the related equipment is improved, and it helps to improve the user experience. In addition, the mainboard with the onboard antenna has a simple structure, is easy to produce, and has a long service life, which effectively reduces the relevant cost investment of enterprises and users, and is conducive to energy saving and cost reduction.

[0048] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A motherboard with an onboard antenna, characterized in that: include: The circuit board comprises an upper surface and a lower surface located on both sides of the circuit board in a thickness direction; The onboard antenna comprises an upper surface support arm and a lower surface support arm, wherein the upper surface support arm and the lower surface support arm are respectively printed on the upper and lower surfaces of the circuit board; A through hole is provided on the circuit board and is arranged corresponding to the onboard antenna; the upper surface support arm and the lower surface support arm are connected through the through hole to form a complete radiator.

2. A mainboard with an onboard antenna according to claim 1, characterized in that: The onboard antenna is printed on the edge of the circuit board.

3. A mainboard with an onboard antenna according to claim 1 or 2, characterized in that: The through hole is arranged at a position corresponding to the width direction of the onboard antenna and close to the edge of the circuit board.

4. A mainboard with an onboard antenna according to claim 3, characterized in that: The through holes include a plurality of through holes, and the plurality of through holes are closely arranged along the routing direction of the onboard antenna on the surface of the circuit board.

5. The mainboard with an onboard antenna according to claim 1, characterized in that: The upper surface support arm and the lower surface support arm are symmetrically arranged on the upper and lower surfaces of the circuit board.

6. The mainboard with an onboard antenna according to claim 1, characterized in that: The tail end of the upper surface layer support arm or the tail end of the lower surface layer support arm is single-sidedly routed on the corresponding upper and lower surfaces of the circuit board.

7. The mainboard with an onboard antenna according to claim 1, characterized in that: The upper surface support arm and / or the lower surface support arm of the onboard antenna is in a planar inverted F shape.

8. The mainboard with an onboard antenna according to claim 7, characterized in that: The onboard antenna has a GND pin and a feeding point which are arranged in parallel with each other.

9. A mainboard with an onboard antenna according to claim 8, characterized in that: The distance between the GND pin and the feeding point is adjustable.

10. A wireless communication device, characterized in that: The invention comprises a main board with an onboard antenna as described in any one of claims 1 to 9.

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