On-board WiFi antenna of wearable device and wearable device

Abstract

The utility model discloses an onboard WiFi antenna of a wearable device and the wearable device, the WiFi antenna comprises a mainboard provided with a conductive layer, the conductive layer of the mainboard is provided with a clearance zone, a dipole antenna is formed through the clearance zone, two ends of the dipole antenna are connected through a feeder line, the feeder line is located in the clearance zone, the feeder line is connected with a first component, and the first component is connected with a second component. The resonant frequency of the antenna is adjusted. According to the wearable device, the conductive layer of the mainboard is designed to be the WiFi antenna, so that other internal space of the wearable device can be saved, high gain of the antenna can be realized by adopting the clearance area, and the resonant frequency of the antenna can be adjusted by adjusting the size of the first component, so that production and assembly of the wearable device can be facilitated, and the cost can be reduced.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of intelligent devices, and in particular to an on-board WiFi antenna for a wearable device and a wearable device. Background Art

[0002] At present, wearable devices on the market have gradually become essential products for consumers as their functions become more and more diverse. Among them, the wireless transmission of WiFi has also become an essential configuration for wearable devices due to its high speed and stability. Almost all existing wearable devices are built-in with WiFi modules for wireless transmission. Due to the characteristics of miniaturization and thinness of wearable devices themselves, there are great limitations on the design of WiFi antennas. Existing technologies mostly use independent antenna small boards, and when designing wearable devices, it is necessary to separately reserve the position of the antenna, making the overall process more complex, the overall implementation cost higher, and it is also a limitation to the overall small and thin design of wearable devices. Therefore, how to provide a WiFi antenna with excellent performance in all aspects in the small space of a wearable device is of great significance. Summary of the Utility Model

[0003] The embodiments of the present utility model provide an on-board WiFi antenna for a wearable device and a wearable device, which can realize the miniaturization and high gain of the antenna of the wearable device, and facilitate the production and assembly of the wearable device.

[0004] In a first aspect, the present utility model provides an on-board WiFi antenna for a wearable device, including: a main board provided with a conductive layer;

[0005] A clearance area is provided in the conductive layer of the main board, and a dipole antenna is formed through the clearance area;

[0006] Both ends of the dipole antenna are connected through a feeder line, and the feeder line is located in the clearance area;

[0007] The feeder line is connected with a first component for adjusting the resonant frequency of the antenna.

[0008] Optionally, the main board is further provided with a radio frequency chip;

[0009] The radio frequency chip is connected to the feeding point of the feeder line through a matching circuit.

[0010] Optionally, the matching circuit includes a second component, a third component and a fourth component;

[0011] One end of the second component is grounded, and the other end is connected to the first end of the third component and then connected to the feeding point of the feeder line;

[0012] One end of the fourth component is grounded, and the other end is connected to the second end of the third component.

[0013] Optionally, the first component, the second component, the third component, and the fourth component are capacitors or inductors.

[0014] Optionally, the clearance area is an area with a width of not less than 2.5 mm and a length of not less than 8 mm.

[0015] Optionally, the conductive layer is an on-board microstrip line.

[0016] Optionally, the dipole antenna is of a U-shaped structure.

[0017] In a second aspect, an embodiment of the present invention further provides a wearable device, including the on-board WiFi antenna of the wearable device as described in the first aspect.

[0018] The on-board WiFi antenna of the wearable device provided by the embodiment of the present invention includes: a main board provided with a conductive layer, a clearance area is provided on the conductive layer of the main board, a dipole antenna is formed through the clearance area, both ends of the dipole antenna are connected through a feeder line, the feeder line is located in the clearance area, and a first component is connected to the feeder line for adjusting the resonant frequency of the antenna. By designing the conductive layer of the main board as a WiFi antenna, the internal space of the wearable device can be saved. By using the clearance area, high gain of the antenna can be achieved. By adjusting the size of the first component, the adjustment of the resonant frequency of the antenna can be realized, which is beneficial to the production and assembly of the wearable device and reduces the cost. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of an on-board WiFi antenna of a wearable device provided by an embodiment of the present invention. Detailed Embodiments

[0021] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0022] In the description of the present utility model, unless otherwise clearly specified and defined, the positional relationships described by directional terms such as up, down, left, and right are the directions when the picture faces the user directly, that is, when the picture is normally displayed, the up, down, left, and right directions with the page as the plane.

[0023] Figure 1 Exemplarily shown is the structure of an on-board WiFi antenna of a wearable device provided by the present utility model. The on-board WiFi antenna may include a main board provided with a conductive layer.

[0024] Among them, the conductive layer of the main board is provided with a clearance area 101, and a dipole antenna 100 is formed through the clearance area 101. There should be no metal in the projection area of the clearance area 101 on the main board to achieve high gain of the antenna.

[0025] In addition, both ends of the dipole antenna 100 are connected through a feeder line, and the feeder line is located in the clearance area 101. The feeder line is connected with a first component 102 for adjusting the resonant frequency of the antenna. The resonant frequency of the antenna is adjusted by adjusting the size of the first component 102.

[0026] As Figure 1 shown, a radio frequency chip 103 is also provided on the main board of the wearable device. The radio frequency chip 103 is connected to the feeding point 105 of the feeder line through a matching circuit 104 to achieve the reception and transmission of radio frequency signals.

[0027] It should be noted that the above-mentioned matching circuit 104 may include a second component 1041, a third component 1042, and a fourth component 1043. Among them, one end of the second component 1041 is grounded, and the other end is connected to the first end of the third component 1042 and then connected to the feeding point 105 of the feeder line; one end of the fourth component 1043 is grounded, and the other end is connected to the second end of the third component 1042.

[0028] In the actual application process, the above-mentioned first component 102, second component 1041, third component 1042, and fourth component 1043 may be capacitors or inductors, such as adjustable capacitors or inductors, and the resonant frequency is adjusted by adjusting the size of the capacitor or inductor.

[0029] Furthermore, the above-mentioned clearance area 101 is an area with a width of not less than 2.5 mm and a length of not less than 8 mm, that is, there should be no metal in the area of not less than 2.5 mm * 8 mm.

[0030] The conductive layer in the embodiment provided by the present utility model may be an on-board microstrip line to improve the signal transmission rate.

[0031] The dipole antenna 100 in the present utility model can be of a U-shaped structure. The dipole antenna 100 is the conductive layer of the main board and is not separated from the main board itself. The normal connection structure of the main board still exists below the dipole antenna 100.

[0032] Based on the above embodiments, the on-board WiFi antenna of the wearable device provided by the embodiments of the present utility model includes: a main board provided with a conductive layer. The conductive layer of the main board is provided with a clearance area 101, and a dipole antenna 100 is formed through the clearance area 101. Both ends of the dipole antenna 100 are connected by a feeder. The feeder is located in the clearance area 101, and the feeder is connected with a first component 102 for adjusting the resonant frequency of the antenna. By designing the conductive layer of the main board as a WiFi antenna, the internal space of the wearable device can be saved. By using the clearance area 101, high gain of the antenna can be achieved. By adjusting the size of the first component 102, the adjustment of the antenna resonant frequency can be realized, which is beneficial to the production and assembly of the wearable device and reduces the cost.

[0033] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present utility model.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications.

Claims

1. An onboard WiFi antenna for a wearable device, characterized in that: include: A main board provided with a conductive layer; The conductive layer of the mainboard is provided with a clearance area, and a dipole antenna is formed by the clearance area; The two ends of the dipole antenna are connected by a feeder line, and the feeder line is located in the clearance area; The feed line is connected with a first component for adjusting the resonant frequency of the antenna.

2. The onboard WiFi antenna of the wearable device according to claim 1, characterized in that: The mainboard is also provided with a radio frequency chip; The radio frequency chip is connected to the feeding point of the feed line through a matching circuit.

3. The onboard WiFi antenna of the wearable device as claimed in claim 2, characterized in that: The matching circuit includes a second component, a third component and a fourth component; One end of the second component is grounded, and the other end is connected to the first end of the third component and then connected to the feeding point of the feeder; One end of the fourth component is grounded, and the other end is connected to the second end of the third component.

4. The onboard WiFi antenna of the wearable device as claimed in claim 3, characterized in that: The first component, the second component, the third component and the fourth component are capacitors or inductors.

5. The onboard WiFi antenna of the wearable device according to claim 1, characterized in that: The clearance area is an area with a width of not less than 2.5 mm and a length of not less than 8 mm.

6. The onboard WiFi antenna of the wearable device according to claim 1, characterized in that: The conductive layer is a board-mounted microstrip line.

7. The onboard WiFi antenna of the wearable device according to claim 1, characterized in that: The dipole antenna is a U-shaped structure.

8. A wearable device, characterized in that: Comprising an onboard WiFi antenna for a wearable device as described in any one of claims 1 to 7.

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