Wearable device antenna and wearable device

Abstract

The utility model discloses a wearable equipment antenna and wearable equipment, relates to the technical field of positioning equipment, and mainly aims to provide an antenna which can be conveniently integrated in the wearable equipment with a compact structure. According to the main technical scheme, in the wearable device antenna, a wearable device comprises a shell and a main board arranged in the shell, an installation space is formed between the edge of the main board and the shell, a reference ground and a radio frequency circuit system are arranged on the main board, and the reference ground and the radio frequency circuit system are arranged in the shell. The wearable equipment antenna comprises a first radiation main body which is arranged at the edge of the mainboard and is electrically connected with the reference ground and the radio frequency circuit system, and the first radiation main body extends into the installation space along the transverse direction; and the second radiation main body is arranged at the edge of the main board and is electrically connected with the first radiation main body, and the second radiation main body extends into the mounting space along the longitudinal direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning equipment technical field, specifically, a wearable device antenna and wearable device are related. BACKGROUND

[0002] With the development of intelligent positioning technology, various kinds of wearable devices for positioning monitoring are more widely applied, wherein the positioning bracelet for wearing on the human wrist belongs to one of the more common positioning devices.

[0003] As the core component of the device, the antenna is responsible for receiving satellite signals or base station signals, so as to determine the position of the device. At present, the antenna adopted by the common wearable device is mostly ceramic antenna or LDS (Laser-Direct-structuring) antenna, which is usually difficult to integrate in the positioning bracelet with compact structure, and is inconvenient to use. SUMMARY

[0004] Therefore, the utility model embodiment provides a wearable device antenna and wearable device, and the main purpose is to provide an antenna which is convenient to integrate in the wearable device with compact structure.

[0005] In order to achieve the above purpose, the utility model mainly provides the following technical scheme:

[0006] On the one hand, the utility model embodiment provides a wearable device antenna, the wearable device includes a shell and a mainboard arranged in the shell, the edge of the mainboard and the shell have a mounting space, the mainboard is provided with a reference ground and a radio frequency circuit system, and the wearable device antenna comprises:

[0007] A first radiation main body, the first radiation main body is arranged at the edge of the mainboard, and is electrically connected with the reference ground and the radio frequency circuit system, and the first radiation main body extends in the mounting space along the transverse direction;

[0008] A second radiation main body, the second radiation main body is arranged at the edge of the mainboard, and is electrically connected with the first radiation main body, and the second radiation main body extends in the mounting space along the longitudinal direction.

[0009] Further, the first radiation main body comprises a patch, a short-circuit return ground branch and a feed line, the patch is arranged on the mainboard, the patch is electrically connected with the reference ground through the short-circuit return ground branch, and the patch is electrically connected with the radio frequency circuit system through the feed line.

[0010] Further, the patch is a reverse triangular patch, the patch comprises a large end and a small end, and a bevel end between the large end and the small end;

[0011] The stub end is electrically connected with the radio frequency circuit system through the feed line;

[0012] The hypotenuse end is electrically connected with the reference ground through the short-circuit return ground branch.

[0013] Further, the first radiation body is integrally formed with the main plate.

[0014] Further, the second radiation body is a rectangular metal sheet, and a long side or a short side of the metal sheet is electrically connected with the first radiation body.

[0015] Further, a metal slot hole is arranged on the main plate.

[0016] The long side or the short side of the metal sheet is electrically connected with the first radiation body through the metal slot hole.

[0017] Further, the thickness of the metal sheet is 0.3 mm.

[0018] Further, a first clearance area is arranged above the first radiation body.

[0019] A second clearance area is arranged below the second radiation body.

[0020] In another aspect, the utility model also provides a wearable device, which comprises the wearable device antenna.

[0021] Further, the shell comprises a shell body and a screen assembly, the screen assembly is buckled at the opening of the shell body, and the main plate is arranged between the shell body and the screen assembly.

[0022] The edge of the main plate, the shell body and the screen assembly form the mounting space.

[0023] By the above technical scheme, the utility model has at least the following beneficial effects:

[0024] In the technical scheme provided by the utility model, the wearable device antenna comprises a first radiation body and a second radiation body, the first radiation body extends in the horizontal direction in the mounting space formed between the main plate edge and the shell of the wearable device, and the second radiation body extends in the vertical direction in the mounting space, that is, the antenna utilizes the horizontal space and the vertical space of the main plate edge, has a higher space utilization rate, and is conveniently integrated in the wearable device with compact structure. Moreover, the first radiation body can provide horizontal radiation current for antenna radiation, and the second radiation body can provide vertical radiation current for antenna radiation, so that the antenna utilizes the main plate edge position of the wearable device, forms an antenna with horizontal radiation current and vertical radiation current, and the whole antenna has better omnidirectionality. Attached Figure Description

[0025] Figure 1 An exploded view of a wearable device provided for an embodiment of this utility model;

[0026] Figure 2 This is a schematic diagram of a wearable device antenna mounted on a motherboard, provided as an embodiment of the present invention.

[0027] Figure 3 A schematic diagram of the structure of the first radiating element in a wearable device antenna provided in this embodiment of the present invention;

[0028] Figure 4 A schematic diagram of the structure of the second radiating element in a wearable device antenna provided in this embodiment of the present invention;

[0029] Figure 5 A simulation result diagram of the optimized S-parameters of a wearable device antenna provided for an embodiment of this utility model;

[0030] Figure 6 The radiation efficiency results of a wearable device antenna provided for an embodiment of this utility model are shown in the figure.

[0031] Figure 7 A horizontal radiation pattern of a wearable device antenna provided for an embodiment of this utility model. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the present utility model will be described in more detail below with reference to the accompanying drawings of the preferred embodiments. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this utility model. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] In the description of the embodiments, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "liquid level", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the embodiments.

[0034] As shown in Figure 1 and Figure 2 The utility model embodiment provides a wearable device antenna, which can be an integrated built-in antenna on the edge of a wearable device mainboard 200 and can be applied to UWB (Ultra Wide Band) positioning technology. The wearable device can be a compact device such as a positioning bracelet, which can include a shell 100 and a mainboard 200 disposed in the shell 100. The edge of the mainboard 200 has a mounting space with the shell 100, and the mainboard 200 is provided with a reference ground 201 and a radio frequency circuit system. The wearable device antenna includes a first radiation body 1 disposed on the edge of the mainboard 200 and electrically connected to the reference ground 201 and the radio frequency circuit system, and the first radiation body 1 extends in the mounting space in the transverse direction. A second radiation body 2 is disposed on the edge of the mainboard 200 and electrically connected to the first radiation body 1, and the second radiation body 2 extends in the mounting space in the longitudinal direction, i.e., the first radiation body 1 and the second radiation body 2 are perpendicular to each other. Specifically, the reference ground 201, the first radiation body 1 and the second radiation body 2 form the antenna.

[0035] It can be understood that the mounting space can be a mounting gap between the mainboard 200 and the shell 100, which can be used for the first radiation body 1 to extend in the transverse direction and the second radiation body 2 to extend in the longitudinal direction, so that the antenna makes full use of the transverse space and the longitudinal space of the edge of the mainboard 200, thereby making the antenna easy to integrate in a compact wearable device. Moreover, the first radiation body 1 can distribute horizontal radiation current, and the second radiation body 2 can distribute vertical radiation current. The superposition of the radiation current in the above two directions makes the whole antenna have better omnidirectional radiation, thereby ensuring the stability of the UWB positioning system.

[0036] The wearable device antenna provided by the embodiment of the utility model, comprising first radiation main body 1 and second radiation main body 2, first radiation main body 1 is extended in the installation space formed between the edge of mainboard 200 and shell 100 along the transverse direction, second radiation main body 2 is extended in the installation space along the longitudinal direction, that is, the antenna utilizes the transverse space and longitudinal space of the edge of mainboard 200, and the space utilization rate is higher, and the antenna is conveniently integrated in the wearable device with compact structure.Moreover, first radiation main body 1 can provide horizontal radiation current for antenna radiation, and second radiation main body 2 can provide vertical radiation current for antenna radiation, so that the antenna utilizes the edge position of the mainboard 200 of the wearable device, and forms an antenna with horizontal radiation current and vertical radiation current, so that the whole antenna has better omnidirectionality.

[0037] Specifically, a first clearance area is arranged above the first radiation main body 1, and a second clearance area is arranged below the second radiation main body 2, that is, no other device and reference ground can be arranged in the vertical space of the first radiation main body 1 and the second radiation main body 2, and the size of the clearance area can be adjusted according to the use frequency band and performance requirement of the antenna, the wearable device antenna provided by the embodiment of the utility model can be applied to CH2 and CH5 frequency bands of UWB positioning technology, and the width of the clearance area can be about 3 mm.

[0038] In some embodiments, referring to Figure 3 The first radiation main body 1 can include a patch 11, a short-circuit ground-return stub 12 and a feed line 13, the patch 11 is arranged on the mainboard 200, the patch 11 is electrically connected with the reference ground 201 through the short-circuit ground-return stub 12, and the patch 11 is electrically connected with the radio frequency circuit system through the feed line 13, so as to provide horizontal radiation current for antenna radiation.

[0039] In some embodiments, referring to Figure 3 The patch 11 can be a reverse triangular patch, the patch 11 includes a large end, a small end and a slant edge end between the large end and the small end, the small end is electrically connected with the radio frequency circuit system through the feed line 13, and the slant edge end is electrically connected with the reference ground 201 through the short-circuit ground-return stub 12.

[0040] The gradually changing reverse triangular shape of the patch 11 can make the impedance of the antenna change relatively gently, so as to increase the bandwidth of the antenna.

[0041] In some embodiments, the first radiation body 1 is integrally formed with the main plate 200. That is, the first radiation body 1 can be a part of the main plate 200, which can be printed together with the main plate 200, convenient for processing and manufacturing, and low in cost.

[0042] In some embodiments, referring to Figure 4 , the second radiation body 2 can be a rectangular metal sheet, and a long side or a short side of the metal sheet is electrically connected with the first radiation body 1.

[0043] In some embodiments, the second radiation body 2 can be a rectangular metal sheet. By adjusting the width W and the length L of the metal sheet, the lowest working frequency of the entire antenna can be adjusted, so that the working frequency of the antenna is more flexible to adjust. Thus, the wearable device antenna provided in the embodiments of the present application has the characteristics of bandwidth and impedance, and flexible working frequency adjustment.

[0044] Specifically, the thickness of the metal sheet can be 0.3 mm. The metal sheet can be made by laser cutting, which is simple to process and low in cost.

[0045] In some embodiments, referring to Figure 2 and Figure 3 , the main plate 200 is provided with a metal slot hole 202, and a long side or a short side of the metal sheet passes through the metal slot hole 202 and is electrically connected with the first radiation body 1. Specifically, the long side or the short side of the metal sheet passes through the metal slot hole 202 and is connected with the large head end of the patch 11.

[0046] As shown in Figure 1 , the embodiments of the present application further provide a wearable device, which comprises the aforementioned wearable device antenna.

[0047] The wearable device provided in the embodiments of the present application comprises the wearable device antenna, which comprises the first radiation body 1 and the second radiation body 2. The first radiation body 1 extends in the transverse direction in the mounting space formed between the main plate 200 edge of the wearable device and the shell 100, and the second radiation body 2 extends in the longitudinal direction in the mounting space. That is, the antenna utilizes the transverse space and the longitudinal space of the main plate 200 edge, has a higher space utilization rate, and is conveniently integrated in the wearable device with compact structure. Moreover, the first radiation body 1 can provide horizontal radiation current for antenna radiation, and the second radiation body 2 can provide vertical radiation current for antenna radiation, so that the antenna utilizes the main plate 200 edge position of the wearable device, forms an antenna with horizontal radiation current and vertical radiation current, and the entire antenna has better omnidirectionality.

[0048] In some embodiments, referring to Figure 1The shell 100 can include a shell body 101 and a screen assembly 102, the screen assembly 102 is buckled at the opening of the shell body 101; the mainboard 200 is arranged between the shell body 101 and the screen assembly 102; the edge of the mainboard 200, the shell body 101 and the screen assembly 102 form an installation space.

[0049] The installation space includes the aforementioned transverse space and longitudinal space. The edge of the mainboard 200 and the inner side wall of the shell body 101 provide a transverse extension space for the first radiation body 1, and the screen assembly 102 and the inner bottom wall of the shell body 101 provide a longitudinal extension space for the second radiation body 2.

[0050] Specifically, the screen assembly 102 can include a bracket and a screen arranged in the bracket; a battery can also be arranged between the shell body 101 and the mainboard 200.

[0051] The wearable device antenna provided by the embodiment of the utility model is an integrated built-in antenna at the edge of the bracelet mainboard 200, which mainly consists of a transverse part (the first radiation body 1) and a longitudinal part (the second radiation body 2), the transverse part is a board-mounted PCB (Printed Circuit Board) antenna at the edge of the bracelet mainboard 200, which can adjust the impedance and bandwidth of the antenna and provide horizontal radiation current for the antenna radiation, the longitudinal part is a metal sheet perpendicular to the mainboard 200, which is connected with the transverse part through PCB metal slot hole 202 welding, which effectively prolongs the length of the board-mounted PCB antenna, at the same time, provides vertical radiation current for the antenna radiation, in general, the antenna provided by the embodiment of the utility model utilizes the position of the edge of the bracelet mainboard 200, forms an antenna with horizontal radiation current and vertical radiation current, so that the whole antenna has better omnidirectionality, and the impedance and bandwidth adjustment mode is flexible, and the processing and assembling cost is low. Figure 5 And Figure 6 As shown in the S parameter simulation result graph and the radiation efficiency result graph of the wearable device antenna provided by the embodiment of the utility model, the use demand of domestic UWB technology common use channel Channel 2 (3.7-4.2GHz) and Channel 5 (6.2-6.7GHz) can be met. Figure 7 As shown in the horizontal plane radiation pattern of the wearable device antenna provided by the embodiment of the utility model, it has better radiation omnidirectionality.

[0052] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An antenna for a wearable device, characterized in that, The wearable device includes a housing and a main board disposed within the housing. An installation space exists between the edge of the main board and the housing. A reference ground and a radio frequency circuit system are disposed on the main board. The wearable device antenna includes: A first radiating element is disposed on the edge of the motherboard and is electrically connected to both the reference ground and the radio frequency circuit system. The first radiating element extends laterally within the mounting space. The second radiating body is disposed on the edge of the motherboard and electrically connected to the first radiating body, and the second radiating body extends longitudinally within the installation space.

2. The wearable device antenna according to claim 1, characterized in that, The first radiating element includes a patch, a short-circuit ground stub, and a feed line. The patch is disposed on the motherboard, and the patch is electrically connected to the reference ground through the short-circuit ground stub. The patch is electrically connected to the radio frequency circuit system through the feed line.

3. The wearable device antenna according to claim 2, characterized in that, The patch is an inverted triangular patch, which includes a large end and a small end, as well as a hypotenuse located between the large end and the small end; The small end is electrically connected to the radio frequency circuit system via the feed line; The inclined end is electrically connected to the reference ground via the short-circuit return branch.

4. The wearable device antenna according to claim 1, characterized in that, The first radiating body is integrally formed with the motherboard.

5. The wearable device antenna according to claim 1, characterized in that, The second radiating body is a rectangular metal sheet, and the long side or the short side of the metal sheet is electrically connected to the first radiating body.

6. The wearable device antenna according to claim 5, characterized in that, The motherboard has metal slots; The long or short side of the metal sheet passes through the metal slot and is electrically connected to the first radiating body.

7. The wearable device antenna according to claim 5, characterized in that, The thickness of the metal sheet is 0.3 mm.

8. The wearable device antenna according to claim 1, characterized in that, A first clearance zone is provided above the first radiating body; A second clearance zone is provided below the second radiating body.

9. A wearable device, characterized in that, include: The wearable device antenna as described in any one of claims 1 to 8.

10. The wearable device according to claim 9, characterized in that, The housing includes a housing body and a screen assembly, the screen assembly being fastened to an opening in the housing body; the motherboard is disposed between the housing body and the screen assembly; The mounting space is formed between the edge of the motherboard, the housing body, and the screen assembly.

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