Wearable device and manufacturing method therefor

Abstract

The present application provides a wearable device and a manufacturing method therefor. The wearable device comprises a housing, an antenna module and a mainboard. The housing comprises a middle frame and a bottom housing that are formed from an insulating material. The antenna module comprises at least two antenna brackets and at least two antenna radiators, wherein the at least two antenna brackets are symmetrically arranged in the middle frame; and the at least two antenna radiators are arranged on the at least two antenna brackets. The mainboard is electrically connected to the at least two antenna radiators to form at least two positioning antennas having different operating frequency bands, wherein the at least two positioning antennas having different operating frequency bands are distributed on different antenna brackets.

Description

Wearable device and manufacturing method thereof Technical Field

[0001] The present application relates to the technical field of portable electronic devices, and in particular to a wearable device and a manufacturing method thereof. Background Art

[0002] Currently, positioning functions have gradually become standard in wearable devices. To achieve fast and accurate positioning, dual-frequency GPS functions are usually added to wearable devices. Summary of the Invention

[0003] The present application provides a wearable device with good antenna isolation and a manufacturing method thereof.

[0004] On the one hand, the present application provides a wearable device, comprising: a shell, the shell comprising a middle frame and a bottom shell formed of insulating material; an antenna module, the antenna module comprising at least two antenna brackets and at least two antenna radiators, the at least two antenna brackets being symmetrically arranged in the middle frame, and the at least two antenna radiators being arranged on the surfaces of the at least two antenna brackets; and a mainboard, electrically connected to the at least two antenna radiators to form at least two positioning antennas with different operating frequency bands, wherein the at least two positioning antennas with different operating frequency bands are distributed on different antenna brackets.

[0005] On the other hand, the present application provides a method for manufacturing a wearable device, including: obtaining an antenna bracket; setting an antenna radiator on at least one surface of the antenna bracket to form an antenna module; injection molding the antenna module into a middle frame body of the wearable device to form a middle frame module; assembling the middle frame module and the bottom shell to form the wearable device.

[0006] The wearable device provided by the embodiment of the present application forms at least two positioning antennas with different operating frequency bands by symmetrically arranging at least two antenna brackets on the middle frame, and arranging at least two antenna radiators of the antenna module on the at least two antenna brackets, which are electrically connected to the mainboard. The at least two positioning antennas with different operating frequency bands are distributed on different antenna brackets, with good isolation. Moreover, the at least two positioning antennas with different operating frequency bands can independently tune their frequencies without affecting each other within the limited space of the wearable device, thereby maximizing the antenna performance.

[0007] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0009] FIG1 is a schematic diagram showing the structure of a wearable device provided in some embodiments of the present application.

[0010] FIG2 shows another schematic structural diagram of a wearable device provided in some embodiments of the present application.

[0011] FIG3 shows another structural diagram of a wearable device provided in some embodiments of the present application.

[0012] FIG4 is a schematic structural diagram of an antenna bracket for a wearable device provided in some embodiments of the present application.

[0013] FIG5 shows another schematic structural diagram of a wearable device provided in some embodiments of the present application.

[0014] FIG6 shows another structural diagram of a wearable device provided in some embodiments of the present application.

[0015] FIG7 shows another schematic structural diagram of a wearable device provided in some embodiments of the present application.

[0016] FIG8 is a schematic diagram showing the current distribution of the antenna module provided in some embodiments of the present application.

[0017] FIG9 is a schematic diagram showing the return loss of the positioning antenna of the wearable device in the L1 frequency band provided in some embodiments of the present application.

[0018] FIG10 is a schematic diagram showing the return loss of the positioning antenna of the wearable device in the L5 frequency band provided in some embodiments of the present application.

[0019] FIG11 is a schematic diagram showing the isolation between the positioning antenna in the L1 frequency band and the positioning antenna in the L5 frequency band in a wearable device provided in some embodiments of the present application.

[0020] FIG12 shows another schematic structural diagram of a wearable device provided in some embodiments of the present application.

[0021] FIG13 shows another schematic structural diagram of a wearable device provided in some embodiments of the present application.

[0022] FIG14 shows another schematic structural diagram of a wearable device provided in some embodiments of the present application.

[0023] FIG15 shows another schematic structural diagram of a wearable device provided in some embodiments of the present application.

[0024] FIG16 shows another structural schematic diagram of a wearable device provided in some embodiments of the present application.

[0025] FIG17 shows another structural schematic diagram of a wearable device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0026] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0027] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar words used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "plurality" or "several" mean two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar words are for convenience only and are not intended to limit to a single position or spatial orientation. The terms "include" or "comprising" and similar words mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar words are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0028] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0029] An embodiment of the present application provides a wearable device, comprising a shell, an antenna module and a mainboard. The shell comprises a bottom shell and a middle frame formed of an insulating material. The antenna module comprises at least two antenna supports and at least two antenna radiators, and the at least two antenna supports are symmetrically arranged on the middle frame. The at least two antenna radiators are respectively arranged on the at least two antenna supports. The mainboard is electrically connected to the at least two antenna radiators to form at least two positioning antennas with different working frequency bands, wherein the at least two positioning antennas with different working frequency bands are distributed on different antenna supports. In some embodiments, at least two antenna supports are symmetrically arranged on the middle frame relative to the center of the wearable device. For a circular wearable device, the center is the center of the circle; for a rectangular wearable device, the center is the center of the rectangle; for wearable devices of other shapes, the center is the center of the shape. In some embodiments, at least two antenna supports are symmetrically arranged on the middle frame relative to a symmetry axis of the wearable device.

[0030] The wearable device provided in the embodiments of the present application utilizes at least two symmetrical antenna brackets disposed on a midframe, and at least two antenna radiators of an antenna module disposed on each of the at least two antenna brackets, electrically connected to the mainboard, to form at least two positioning antennas with different operating frequency bands. Distributing the at least two positioning antennas with different operating frequency bands on different antenna brackets provides good isolation and allows the at least two positioning antennas with different operating frequency bands to independently tune their frequencies within the limited space of the wearable device without interfering with each other, maximizing their respective antenna performance.

[0031] The wearable device provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings. Unless there is a conflict, the features of the following embodiments and implementations can be combined with each other in any way.

[0032] FIG1 is a schematic diagram of the structure of a wearable device 1 provided in some embodiments of the present application. The wearable device 1 hereinbelow includes a wrist-worn device. For example, a round watch is used as an example for illustration. In other embodiments, the wearable device 1 may be a watch or bracelet of any shape (e.g., square, hexagonal, octagonal, etc.), which is not limited in this application.

[0033] As shown in Figures 1 to 7, the wearable device 1 includes a shell, an antenna module and a motherboard 13. The shell includes a middle frame 111 and a bottom shell 15 formed of insulating material. The antenna module includes at least two antenna brackets 112 and at least two antenna radiators 12, and the at least two antenna brackets 112 are symmetrically arranged on the middle frame 111. The at least two antenna radiators 12 are respectively arranged on the at least two antenna brackets 112. The motherboard 13 is assembled and connected to the middle frame 111. The at least two antenna radiators 12 are electrically connected to the motherboard 13 to form at least two positioning antennas with different operating frequency bands, wherein the at least two positioning antennas with different operating frequency bands are distributed on different antenna brackets 112. In some embodiments, the antenna bracket can be designed into a 3D shape as needed to have multiple surfaces with different orientations. In some embodiments, the motherboard is located between the at least two antenna brackets and the bottom shell. In this way, the at least two antenna brackets are arranged closer to the top surface of the wearable device.

[0034] In some embodiments, the wearable device 1 further includes a wearable component 2, which is used to attach the wearable device 1 to a human body. The housing is provided with at least one connection portion 18 for connecting to the wearable component 2. The at least two antenna supports 112 include one or more antenna supports 112 disposed within the connection portion. In the example shown in FIG1 , the at least two antenna supports 112 include a first antenna support 112a and a second antenna support 112b. The at least two antenna radiators 12 include a first antenna radiator 12a and a second antenna radiator 12b. The first antenna radiator 12a forms a first positioning antenna and a wireless communication antenna, respectively, while the second antenna radiator 12b, symmetrically disposed with respect to the first antenna radiator 12a, forms a second positioning antenna. The first antenna radiator 12a is disposed on the first antenna support 112a, and the second antenna radiator 12b is disposed on the second antenna support 112b. The first antenna supports 112a and the second antenna supports 112b are symmetrically distributed on two opposite sides of the middle frame 111. Accordingly, the first antenna radiator 12a and the second antenna radiator 12b are symmetrically distributed on two opposite sides of the middle frame 111. The first antenna radiator 12a and the second antenna radiator 12b are each electrically connected to the mainboard 13, forming antennas with at least two different operating frequency bands. Thus, at least two positioning antennas with different operating frequency bands are distributed on different antenna supports 112. This configuration, with at least two antenna supports 112 carrying at least two antenna radiators 12 and electrically connected to the mainboard 13, provides improved isolation between the at least two positioning antennas with different operating frequency bands. Furthermore, within the limited space of the wearable device 1, the at least two positioning antennas with different operating frequency bands can be independently tuned without interfering with each other, maximizing the performance of each antenna and achieving dual-frequency positioning functionality.

[0035] In the examples shown in Figures 1 and 2 , the middle frame 111 is provided with at least two evenly spaced bracket receptacles 113. The antenna bracket 112 is partially embedded within the bracket receptacles 113 through injection molding, with the remaining portion extending beyond the bracket receptacles 113. In this embodiment, the bracket receptacles 113 are provided on two opposing portions of the middle frame 111. The antenna bracket 112 is injection molded within the bracket receptacles 113, with the remaining portion extending beyond the bracket receptacles 113. This arrangement is simple and provides excellent stability. In some embodiments, the middle frame 111 is provided with at least two evenly spaced bracket receptacles 113. The antenna bracket 112 is injection molded within the bracket receptacles 113. Because the antenna bracket has a 3D shape, providing bracket receptacles in the middle frame that match the shape of the antenna bracket facilitates its embedding within the middle frame. In some embodiments, the middle frame 111 and antenna bracket 112 are integrally formed. This integrated structure is simple and offers a high degree of integration. In some embodiments, the middle frame 111 wraps around the outside of the antenna bracket 112. In this way, the antenna bracket 112 can be wrapped inside, resulting in a simple appearance.

[0036] In conjunction with the examples shown in Figures 1 and 2, the wearable device 1 also includes a top cover assembly 14, a battery module 16 and a screen module 17. The top cover assembly 14 is assembled on the top of the middle frame 111 and is arranged around the screen module 17. The bottom shell 15 is assembled on the bottom of the middle frame 111. In some embodiments, the middle frame 111 is formed of a plastic material. Plastic frames are low in cost and lightweight. The middle frame 111 can also be formed of other types of insulating materials, which are not limited here. The top cover assembly 14 can also be called a bezel, on which decorative parts can be set. The top cover assembly 14 can be a metal part or an insulating part. The top cover assembly 14 is assembled on the first surface of the middle frame 111. The bottom shell 15 can also be called a back cover assembly, which is assembled on the second surface of the middle frame 111 opposite to the first surface. The top cover assembly 14, the middle frame 111, and the bottom case 15 can surround and form a housing cavity 115, which houses multiple electronic components, including the motherboard 13, speakers, motors, battery modules 16, and charging components. This arrangement effectively utilizes the internal space of the housing cavity 115, provides flexible wiring, and maintains a compact layout.

[0037] In the example shown in Figures 1 and 2, the battery module 16, mainboard 13, and screen module 17 are stacked in sequence, extending from the bottom housing 15 toward the top cover assembly 14. This arrangement effectively utilizes the space in the receiving cavity 115 and achieves a compact structural layout. In some embodiments, gaps are provided between the mainboard 13 and the screen module 17 and battery module 16, respectively. These gaps facilitate heat dissipation while meeting electrical requirements. In some embodiments, the top cover assembly 14 includes a transparent window 141, and the screen module 17 is positioned corresponding to the transparent window 141. This arrangement facilitates image display. The top cover assembly 14 is positioned on top of the wearable device 1, with the edge of the top cover assembly 14 snap-fitting to the edge of the middle frame 111. The edge of the screen module 17 snap-fitting to the edge of the middle frame 111. This snap-fit ​​assembly method offers a simple structure, requires fewer parts, is compact, and is relatively low in cost. In other embodiments, the screen module 17, top cover assembly 14, and middle frame 111 may be connected in other ways, which are not limited in this embodiment of the present application.

[0038] In the example shown in Figures 1 to 3, the edge of the mainboard 13 is connected to the inner edge of the middle frame 111. The mainboard 13 is provided with multiple feed terminals 131 and multiple ground terminals 132. These multiple feed terminals 131 and multiple ground terminals 132 can be located on the side facing the top cover assembly 14 and spaced relatively close to the inner edge of the middle frame 111. Each antenna radiator 12 is provided with at least one feed point 121 and at least one ground point 122 (shown by dashed lines in Figure 13, located below the feed and ground terminals). The mainboard 13 is provided with multiple feed terminals 131 connected to the multiple feed points of at least two antenna radiators 12, and multiple ground terminals 132 connected to the multiple ground points. The feed points are electrically connected to the feed terminals 131, and the ground points are electrically connected to the ground terminals 132. The feed points are used to feed antenna signals and are electrically connected to the circuit layer of the mainboard 13. The ground points are electrically connected to the ground layer of the mainboard 13. Positioning multiple feed terminals 131 and multiple ground terminals 132 toward one side of the top cover assembly 14 facilitates electrical connection to the antenna radiator 12, shortening electrical connection lines and achieving a more compact structure. In this embodiment, frequency tuning is achieved by adjusting the shape of the antenna radiator 12 mounted on the antenna support 112 and selecting appropriate feed terminals 131 and ground terminals 132. This facilitates frequency tuning and provides good isolation. In some embodiments, the at least two antenna radiators 12 include a first antenna radiator 12a and a second antenna radiator 12b. The first antenna radiator 12a is provided with at least one feed point and at least one ground point, each coupled to the mainboard 13. The second antenna radiator 12b is coupled to a feed terminal 131 on the mainboard 13 via at least one feed point, or to a ground terminal 132 on the mainboard 13 via at least one ground point. The first antenna radiator 12a and the second antenna radiator 12b may have different ground points and feed points, and may be connected to different feed terminals 131 and ground terminals 132 on the mainboard 13. Mainboard 13 is connected to the feed point via feed terminals 131 and to the ground point via ground terminals 132, ensuring stability and reliability. In some embodiments, bottom housing 15 is formed of an insulating material and is provided with multiple conductive members electrically connected to mainboard 13. At least one of the at least two antenna radiators 12 is connected to mainboard 13 via at least one of the multiple conductive members. This electrical connection achieved through the provision of conductive members simplifies the structure and reduces costs.

[0039] In some embodiments, the at least two positioning antennas with different operating frequency bands include a first positioning antenna operating in the GPS L1 band and a second positioning antenna operating in the GPS L5 band. In this embodiment, dual-frequency GPS refers to simultaneous support for positioning based on both the GPS L1 band and the GPS L5 band. In some examples, the GPS L1 band is 1575.42±1.023 MHz, and the GPS L5 band is 1176.45±1.023 MHz. The GPS L5 band has a longer wavelength, and the positioning signal experiences less attenuation in free space. Therefore, under the same conditions, the positioning signal reaches the ground equipment with higher power. Under the same conditions, the signal power of the GPS L5 band can be 6dB higher than that of the GPS L1 band. However, because the GPS L1 band has greater satellite coverage, the L1 band is typically used as the primary GPS operating frequency band, with the L5 band serving as an auxiliary L1 band. In this embodiment, the first antenna radiator 12a can be used to implement a positioning antenna based on the GPS L1 band, and the second antenna radiator 12b can be used to implement a positioning antenna based on the GPS L5 band. Distributing the first positioning antenna based on the GPS L1 frequency band and the second positioning antenna based on the GPS L5 frequency band on different antenna brackets 112 can improve the isolation between the first positioning antenna based on the GPS L1 frequency band and the second positioning antenna based on the GPS L5 frequency band, so that within the limited space of the wearable device 1, at least two positioning antennas with different operating frequency bands can independently tune their frequencies without affecting each other, and each can maximize the antenna performance.

[0040] In the examples shown in Figures 4 to 6, the wearable device 1 includes a wrist-worn device. The wrist-worn device has a 6 o'clock direction A1 and a 12 o'clock direction A2. The 6 o'clock direction A1 and the 12 o'clock direction A2 are symmetrical directions. For example, the 6 o'clock direction A1 can be due south. The 12 o'clock direction A2 can be due north. In some embodiments, at least two antenna brackets 112 are symmetrically arranged in the 6 o'clock direction A1 area and the 12 o'clock direction A2 area of ​​the wearable device 1. For example, a first positioning antenna based on the GPS L1 frequency band and a second positioning antenna based on the GPS L5 frequency band are respectively arranged at the 6 o'clock direction A1 and the 12 o'clock direction A2 positions of the wearable device 1. In some examples, the first positioning antenna operating in the GPS L1 frequency band is arranged at the 6 o'clock direction A1 position of the wearable device 1, and the second positioning antenna operating in the GPS L5 frequency band is arranged at the 12 o'clock direction A2 position of the wearable device 1. In other examples, a first positioning antenna operating in the GPS L1 frequency band is located at position A2 at the 12 o'clock direction of the wearable device 1, and a second positioning antenna operating in the GPS L5 frequency band is located at position A1 at the 6 o'clock direction of the wearable device 1. With this arrangement, positioning antennas based on the GPS L1 frequency band and positioning antennas based on the GPS L5 frequency band can be flexibly set as needed.

[0041] In some embodiments, the wearable device 1 includes connectors centered at the 6 o'clock position A1 and the 12 o'clock position A2 for connecting to a wearable device, such as a watchband. Compared to other edge regions, the connectors require less space. Antenna brackets can be located in the connector area. For example, the antenna brackets can extend within the connector along the direction of the connector, creating a 3D structure with expandable or elongated space, allowing for adaptability to different antenna assemblies based on space requirements. Placing at least two antenna brackets in the connector area of ​​the wearable device 1 effectively utilizes the internal space of the wearable device 1, resulting in a compact layout and facilitating device miniaturization. In some embodiments, the connectors can be integrated with or located on the middle frame, with the shape of the connectors configured to enclose or adapt to the shape of the antenna brackets. In other embodiments of the present application, the at least two antenna brackets can be located in other locations, without limitation. In some embodiments, the antenna brackets include openings for accommodating spring-loaded earpieces for connecting to the wearable device. As an example, two opposite openings are provided on one of the antenna brackets, and the two openings are used to accommodate an ear piece connected to a wearable item. For example, the ear piece is in the shape of a thin rod and passes through the two opposite openings, and the ear piece is used to connect to the wearable item. In some embodiments, an opening is provided on the connecting portion, and the opening is used to accommodate the ear piece connected to the wearable item. As an example, the connecting portion includes a first connecting portion and a second connecting portion that are opposite to each other, and a third connecting portion connecting the first connecting portion and the second connecting portion, wherein the antenna bracket includes a first bracket portion provided on the first connecting portion, a second bracket portion provided on the second connecting portion, and a third bracket portion connecting the first bracket portion and the second bracket portion, wherein the first bracket portion and the second bracket portion are respectively provided with openings for accommodating the ear piece.

[0042] In some embodiments, the current zero point of the electromagnetic field generated by the first positioning antenna based on the GPS L1 frequency band is symmetrical to the current zero point of the electromagnetic field generated by the second positioning antenna based on the GPS L5 frequency band. The electromagnetic field generated by the first positioning antenna based on the GPS L1 frequency band and the electromagnetic field generated by the second positioning antenna based on the GPS L5 frequency band are symmetrical about the center of the distribution direction of the first positioning antenna and the second positioning antenna, that is, symmetrical about the center of the line connecting the first positioning antenna and the second positioning antenna. In this embodiment, the distribution direction of the electromagnetic field of the first positioning antenna based on the GPS L1 frequency band and the second positioning antenna based on the GPS L5 frequency band can be an extension direction from the 6 o'clock direction A1 to the 12 o'clock direction A2. In some embodiments, the electromagnetic field generated by the first positioning antenna and the electromagnetic field generated by the second positioning antenna are symmetrical about the center of the wearable device. In some embodiments, the intensity of the electromagnetic field generated by the first positioning antenna based on the GPS L1 frequency band is strongest in the area where the first positioning antenna is located and weakest in the area where the second positioning antenna is located, thereby reducing the impact of the electromagnetic field of the first positioning antenna on the second positioning antenna. In some embodiments, the electromagnetic field generated by the second positioning antenna based on the GPS L5 frequency band is strongest in the area where the second positioning antenna is located and weakest in the area where the first positioning antenna is located, so as to reduce the impact of the electromagnetic field of the second positioning antenna on the first positioning antenna.

[0043] As can be seen from the example shown in FIG8 , the zero points of the current distribution corresponding to the first positioning antenna and the second positioning antenna are located exactly in the area of ​​the 12 o'clock and 6 o'clock directions, so that the electromagnetic fields of the first positioning antenna and the second positioning antenna are weakest at the 12 o'clock and 6 o'clock positions, respectively, and the influence between the first positioning antenna and the second positioning antenna is minimized. This embodiment isolates the first positioning antenna based on the GPS L1 frequency band from the second positioning antenna based on the GPS L5 frequency band, and the first positioning antenna and the second positioning antenna do not affect each other, with good isolation (as shown in FIG11 ). This allows at least two positioning antennas with different operating frequency bands to independently tune their frequencies within the limited space of the wearable device 1 without affecting each other, and each maximizes antenna performance.

[0044] In some embodiments, the wearable device 1 also includes other types of antennas, such as a wireless communication antenna, which may include a long-distance communication antenna or a short-distance communication antenna, such as a cellular communication antenna, a Bluetooth antenna, a WiFi antenna, and the like. In one example, the wearable device 1 may include a wireless communication antenna based on the 2.4 GHz frequency band. The antenna in the 2.4 GHz frequency band may be an antenna for short-distance wireless communications such as WiFi, Bluetooth, Zigbee, and may transmit wireless signals in the 2.4 GHz frequency band (e.g., 2400-2483.5 MHz). The wireless communication antenna may be implemented by one of the at least two antenna radiators. As an example, the positioning antenna and the wireless communication antenna may be implemented by reusing one antenna radiator. For example, the first antenna radiator of the at least two antenna radiators simultaneously implements a positioning antenna based on GPS L1 and a wireless communication antenna, but this is not limited here. In this way, positioning antennas and wireless communication antennas covering different frequency bands can be implemented simultaneously, which is beneficial to the communication performance and miniaturized design of the wearable device.

[0045] In some embodiments, the antenna radiator 12 is positioned on an antenna bracket 112 at a corresponding position. The antenna bracket 112 can be a plastic bracket embedded within the middle frame 111. The antenna bracket 112 is provided with multiple contact points for the antenna radiator, such as metal springs, for connecting to corresponding positions on the mainboard 13. The metal springs extend from the mainboard toward the top surface of the housing and contact, for example, abut, the contact points of the antenna bracket 112 to achieve electrical connection between the mainboard 13 and the antenna bracket 112. The antenna radiator 12, through its appropriate shape and corresponding contact positions (e.g., ground terminals and feed terminals), enables the dual-frequency GPS L1 band first positioning antenna and L5 band second positioning antenna to each achieve their maximum performance while maintaining good isolation. This avoids compatibility issues associated with designing the L1 band first positioning antenna and the L5 band second positioning antenna together. For example, the design needs to consider balancing the performance of the GPS L1 band first positioning antenna and the GPS L5 band second positioning antenna.

[0046] In embodiments of the present application, the antenna radiator can be disposed on the antenna support in a variety of ways. In the example shown in FIG7 , the antenna radiator 12 is printed onto the surface of the antenna support 112 using a printing direct structure (PDS) process. The antenna radiator 12 can be formed onto the upper surface, side surface, and / or lower surface of the antenna support 112 using the printing direct structure (PDS) process, which is not limited in this application. In some embodiments, the antenna support 112 is a plastic support, and the antenna radiator 12 is formed by printing a metal material onto the surface of the antenna support 112 using a PDS process. The antenna radiator 12 can be a metal part with a specific shape. PDS is a photocopying technique that, in layman's terms, is like a "stamp." A "stamp" with a specific pattern and a metal material (such as silver paste, nickel, or gold) is applied to the surface of the antenna support 112 like a stamp, and then cured. This process is simple and does not require the material of the antenna support 112. Ordinary plastic materials can be used to form the antenna support, resulting in low cost. For antennas of different frequency bands, the antenna radiator 12 can be flexibly printed on the surface of the antenna bracket 112 according to the structure of the antenna bracket 112, which has higher flexibility and more application scenarios.

[0047] In some embodiments, the antenna bracket 112, the antenna radiator 12, and the middle frame are integrally formed. For example, the antenna bracket 112 can be set in the middle frame, and then the antenna radiator 12 can be set on the antenna bracket, or the antenna bracket 112 and the antenna radiator 12 can be integrated together, and then the integrated antenna bracket 112 and the antenna radiator 12 can be set in the middle frame, for example, by injection molding or other processes. In some embodiments, the antenna radiator 12 of a specific shape is printed on the surface of the antenna bracket 112 by the PDS process, and then the antenna bracket 112 is injection molded into the middle frame 111 by a secondary injection molding process. The secondary injection molding process can be a process in which a certain plastic raw material is molded in a primary plastic mold, the molded part is removed, and placed in a secondary molding mold to be injected with the same or another plastic material again for molding. The process is simple and low in cost.

[0048] In some other embodiments, the antenna radiator 12 may be disposed on the surface of the antenna bracket 112 by an etching process, an electroplating process, a molding process, a hand lay-up process, etc., which is not limited in this application.

[0049] In some embodiments, the antenna bracket 112 is integrally formed with the antenna radiator 12 to form an integrated structure. The antenna radiator 12 is located on the surface of the antenna bracket 112, but this application is not limited thereto. In embodiments of the present application, the operating frequency band of the antenna formed by the antenna radiator can be adjusted in a variety of ways. In some embodiments, the antenna bracket is not a planar bracket, but a 3D stereoscopic bracket. As an example, at least one antenna bracket includes a first surface and a second surface, and the antenna radiator is disposed on at least a portion of the first surface and at least a portion of the second surface. In some embodiments, at least one antenna bracket includes a portion extending along the side surface of the middle frame and a portion extending along the top and / or bottom surface of the middle frame, and the antenna radiator is disposed on at least a portion. In some embodiments, at least two antenna brackets include a first portion disposed near the side surface of the middle frame and a second portion disposed near the top surface of the middle frame, and the antenna radiator is disposed on at least a portion of the antenna bracket. In the example shown in FIG. 7 , the oblique line portion represents the antenna radiator 12. As can be seen from the figure, the antenna radiator 12 includes a portion located on the upper surface of the antenna support 112 and a portion located on the side surface of the antenna support 112. The portion located on the upper surface of the antenna support 112 substantially covers the upper surface of the antenna support 112, while the portion located on the side surface of the antenna support 112 does not completely cover the side surface of the antenna support 112. This results in the surface area of ​​the antenna support 112 being larger than the coverage area of ​​the antenna radiator 12. This facilitates the antenna support to carry antenna radiators 12 of different frequency bands as needed, expanding the application scenarios of wearable devices. In the example shown in Figure 7, at least two positioning antennas with different operating frequency bands are quarter-wave antennas. By adjusting the height h and / or width w of the antenna radiator 12, at least two positioning antennas with different operating frequency bands are formed, and the resulting positioning antennas are quarter-wave antennas. This configuration of the positioning antennas as quarter-wave antennas, meaning that the antenna length reaches 1 / 4 of the electromagnetic wave wavelength, improves the transmission and reception conversion efficiency of the positioning antennas. Thus, by separately configuring the first positioning antenna for the GPS L1 frequency band and the second positioning antenna for the GPS L5 frequency band, they can each achieve a λ / 4 antenna configuration through appropriate radiator shapes, further facilitating symmetry of the current zero points of the two antennas (as shown in Figure 8). This allows for optimal performance of each antenna while maintaining good isolation. Furthermore, configuring antennas in different frequency bands to meet the λ / 4 antenna configuration results in a low standing wave ratio (SWR), enabling the majority of energy to be transmitted into the air and resulting in low return loss, as shown in Figures 9 and 10. The standing wave ratio is the ratio of the reflection coefficient to the transmission coefficient of electromagnetic waves in an antenna.

[0050] Figure 12 shows another embodiment of an antenna structure for a wearable device 1. The example shown in Figure 12 is similar to the example shown in Figure 7 , with the primary difference being that the antenna radiator 12 is positioned in different areas on the antenna support 112, thereby forming antennas with different shapes and operating frequency bands. Specifically, in the example shown in Figure 12 , the antenna radiator 12 is positioned on the top and side surfaces of the antenna support 112. The portion of the antenna radiator 12 located on the top surface of the antenna support 112 includes two spaced-apart areas, while the portion located on the side surface of the antenna support 112 includes three areas, forming a specific U-shaped configuration. In Figure 12 , the coverage area of ​​the antenna radiator 12 on the antenna support 112 differs from the coverage area of ​​the antenna radiator 12 in the example shown in Figure 7 , and the antenna radiator 12 has a different shape, enabling antennas with different frequency bands. This allows the antenna radiator to be positioned on the surface of the antenna support 112 according to the structure of the antenna support 112 and the required antenna frequency band, providing greater flexibility and a wider range of application scenarios.

[0051] FIG13 shows another embodiment of the antenna structure of the wearable device 1. The example shown in FIG13 is similar to the example shown in FIG7 , with the main difference being that the antenna radiator 12 is disposed at a different position on the antenna bracket 112 to form antenna radiators of different shapes and antennas with different operating frequency bands. Specifically, in the example shown in FIG13 , the area where the antenna radiator 12 is disposed on the antenna bracket 112 is different from the area where the antenna radiator 12 is disposed on the antenna bracket 112 in the example shown in FIG7 , wherein, relative to FIG7 , in the antenna structure shown in FIG13 , the antenna radiator 12 is disposed more on the side surface of the antenna bracket 112 and less on the upper surface of the antenna bracket 112, thereby adjusting the operating frequency band of the formed positioning antenna.

[0052] FIG14 shows another embodiment of an antenna structure for a wearable device 1. The example shown in FIG14 is similar to the example shown in FIG7 , with the main difference being that the antenna radiator 12 is disposed in a different area on the antenna support 112 to form antenna radiators of different shapes and antennas operating at different frequency bands. Specifically, in the example shown in FIG14 , the antenna radiator 12 substantially completely covers the side surfaces of the antenna support 112, but fails to completely cover the top surface of the antenna support 112. Thus, compared to FIG7 , the antenna radiator 12 shown in FIG14 covers less of the top surface of the antenna support 112 and more of the side surface of the antenna support 112. Thus, the coverage area printed on the antenna support 112 is different from the coverage area of ​​the antenna radiator 12 printed on the antenna support 112 in the example shown in FIG7 , forming antennas operating at different frequency bands.

[0053] Figures 15 to 17 illustrate alternative embodiments of antenna structures for wearable device 1. By adjusting the coverage area of ​​antenna radiator 12 within antenna support 112, antennas with specific shapes and different frequency bands can be formed. The different frequency bands of antenna radiator 12 can be flexibly printed on the surface of antenna support 112 based on its structure, providing greater flexibility and a wider range of application scenarios.

[0054] In the examples shown in Figures 12 to 17, the antenna radiator 12 is arranged on the surface of the antenna bracket 112. The corresponding frequency can be achieved through a suitable shape according to the specific structure of the antenna bracket 112. The application range is wide and is not limited in this application. It should be noted that Figures 12 to 17 schematically illustrate the arrangement of the antenna radiator 12 in the lower half of the wearable device (i.e., around the 6 o'clock position). The arrangement of the antenna radiator in the upper half of the wearable device (i.e., around the 12 o'clock position) can also adopt any of the shapes shown in Figures 12 to 17 or other suitable shapes as needed. In some embodiments, in addition to covering the upper surface and side surfaces, the antenna radiator can also be arranged on at least one of the left and right side surfaces and / or the lower surface of the antenna bracket as needed. The antenna bracket is designed to be a 3D shape, which is convenient for designing the shape of the antenna radiator as needed.

[0055] An embodiment of the present application also provides a method for manufacturing a wearable device, including obtaining an antenna bracket; setting an antenna radiator on at least one surface of the antenna bracket to form an antenna module; injection molding the antenna module into a middle frame body of the wearable device to form a middle frame module; and assembling the middle frame module and the bottom shell to form a wearable device.

[0056] In some embodiments, an antenna radiator is provided on at least one surface of the antenna bracket to form an antenna module, including: printing the antenna radiator on at least one surface of the antenna bracket through a printing molding process to form the antenna module.

[0057] In some embodiments, an antenna radiator is provided on at least one surface of the antenna support to form an antenna module, which includes: printing the antenna radiator on at least one surface of the antenna support through an etching process to form the antenna module.

[0058] In some embodiments, an antenna radiator is provided on at least one surface of the antenna support to form an antenna module, including: printing the antenna radiator on at least one surface of the antenna support through an electroplating process to form the antenna module.

[0059] In some embodiments, an antenna radiator is provided on at least one surface of the antenna bracket to form an antenna module, including: printing the antenna radiator on at least one surface of the antenna bracket through a molding process to form the antenna module.

[0060] In some embodiments, an antenna radiator is provided on at least one surface of the antenna bracket to form an antenna module, including: printing the antenna radiator on at least one surface of the antenna bracket by a hand lay-up process to form the antenna module.

[0061] In some embodiments, the antenna module is injection-molded into the middle frame body of the wearable device to form the middle frame module, including: symmetrically injecting at least two antenna modules into the middle frame body of the wearable device to form the middle frame module.

[0062] In some embodiments, at least two antenna modules have different operating frequency bands.

[0063] In some embodiments, the at least two antenna modules include a single-band antenna module and a dual-band antenna module.

[0064] In some embodiments, the operating frequency band of the single-band antenna module includes the GPS L1 band, and the operating frequency band of the dual-band antenna module includes the GPS L5 band and the 2.4 GHz wireless communication band.

[0065] In some embodiments, at least one of the shape and the position of the antenna radiator on the antenna support of at least two antenna modules is different.

[0066] In some embodiments, the at least two antenna modules include a first positioning antenna operating in the GPS L1 frequency band and a second positioning antenna operating in the GPS L5 frequency band.

[0067] In some embodiments, the current zero point of the electromagnetic field generated by the first positioning antenna based on the GPS L1 frequency band is symmetrical to the current zero point of the electromagnetic field generated by the second positioning antenna based on the GPS L5 frequency band.

[0068] In some embodiments, the intensity of the electromagnetic field generated by the first positioning antenna based on the GPS L1 frequency band is strongest in the area where the first positioning antenna is located, and is weakest in the area where the second positioning antenna is located.

[0069] In some embodiments, the intensity of the electromagnetic field generated by the second positioning antenna based on the GPS L5 frequency band is strongest in the area where the second positioning antenna is located, and is weakest in the area where the first positioning antenna is located.

[0070] In some embodiments, the first antenna radiator among at least two antenna radiators simultaneously implements a positioning antenna and a wireless communication antenna, such as a wireless communication antenna based on the 2.4 GHz frequency band. The antenna in the 2.4 GHz frequency band can be an antenna for short-range wireless communications such as WiFi, Bluetooth, and Zigbee.

[0071] In some embodiments, the at least two antenna modules are quarter-wavelength antennas.

[0072] In some embodiments, the middle frame module and the bottom shell are assembled to form a wearable device, including: assembling the middle frame module and the bottom shell to form a receiving cavity, and setting a mainboard in the receiving cavity so that the mainboard contacts the antenna module to form a wearable device.

[0073] In some embodiments, the antenna bracket is a plastic bracket. In some embodiments, the antenna bracket is a 3D structure.

[0074] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0075] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A wearable device, comprising: A housing, including a bottom case and a middle frame formed of an insulating material; An antenna module, including: At least two antenna brackets, symmetrically arranged on the middle frame; At least two antenna radiators, respectively arranged on the at least two antenna brackets; and A main board, electrically connected to the at least two antenna radiators, forming at least two positioning antennas with different operating frequency bands, wherein the at least two positioning antennas are distributed on different ones of the at least two antenna brackets.

2. The wearable device according to claim 1, wherein, The at least two positioning antennas include a first positioning antenna operating in the GPS L1 frequency band and a second positioning antenna operating in the GPS L5 frequency band.

3. The wearable device according to claim 2, wherein, The intensity of the electromagnetic field generated by the first positioning antenna is the strongest in the area where the first positioning antenna is located and the weakest in the area where the second positioning antenna is located.

4. The wearable device according to claim 2 or 3, wherein, The intensity of the electromagnetic field generated by the second positioning antenna is the strongest in the area where the second positioning antenna is located and the weakest in the area where the first positioning antenna is located.

5. The wearable device according to any one of claims 2 to 4, wherein, The current zero point of the electromagnetic field generated by the second positioning antenna is symmetric with the current zero point of the electromagnetic field generated by the first positioning antenna.

6. The wearable device according to any one of claims 1 to 5, wherein, The at least two antenna radiators are respectively formed on the surfaces of the at least two antenna brackets by a printing and molding process.

7. The wearable device according to any one of claims 1 to 5, wherein, The at least two antenna brackets are integrally formed with the at least two antenna radiators respectively.

8. The wearable device according to any one of claims 1 to 7, wherein, The at least two positioning antennas are quarter-wavelength antennas.

9. The wearable device according to any one of claims 1 to 8, wherein, The first antenna radiator among the at least two antenna radiators forms the first positioning antenna; or The second antenna radiator among the at least two antenna radiators forms the second positioning antenna and a wireless communication antenna.

10. The wearable device according to any one of claims 1 to 9, wherein, The at least two antenna brackets are made of an injection molding material; or The at least two antenna brackets are injection-molded and arranged in the housing.

11. The wearable device according to any one of claims 1 to 10, wherein, The main board is provided with a plurality of feeding terminals and a plurality of grounding terminals. At least one feeding point and at least one grounding point are arranged on each antenna radiator among the at least two antenna radiators. The at least one feeding point is connected to at least one of the plurality of feeding terminals, and the at least one grounding point is connected to at least one of the plurality of grounding terminals.

12. The wearable device according to any one of claims 1 to 11, wherein, The bottom case is formed of an insulating material, A plurality of conductive members electrically connected to the main board are arranged on the bottom case, At least one of the at least two antenna radiators is connected to the main board through at least one of the plurality of conductive members.

13. The wearable device according to any one of claims 1 to 11, wherein, The antenna bracket is made of plastic.

14. The wearable device according to any one of claims 1 to 13, further comprising a wearable member for attaching the wearable device to a human body; At least one connecting portion configured to connect the wearable member is provided on the housing, and at least one of the at least two antenna brackets is disposed in the at least one connecting portion.

15. The wearable device according to any one of claims 1 to 14, wherein, The at least two antenna brackets are symmetrically arranged on the housing of the wearable device.

16. The wearable device according to any one of claims 1 to 15, wherein, The at least two antenna brackets and the at least two antenna radiators are integrally formed with the middle frame.

17. The wearable device according to any one of claims 1 to 16, wherein, At least one of the at least two antenna brackets includes a first surface and a second surface, and the antenna radiator is disposed on at least a part of the first surface and at least a part of the second surface; and / or At least one of the at least two antenna brackets includes a portion extending along the side surface of the middle frame and a portion extending along the top surface and / or bottom surface of the middle frame.

18. The wearable device according to any one of claims 1 to 17, wherein, The at least two antenna brackets include a first bracket and a second bracket. The first bracket is disposed at the 6 o'clock direction of the dial of the wearable device, and the first antenna radiator disposed on the first bracket operates in the GPS L1 frequency band. The second bracket is disposed at the 12 o'clock direction of the dial of the wearable device, and the second antenna radiator disposed on the second bracket operates in the GPS L5 frequency band and a wireless communication frequency band centered around 2.4 GHz.

19. The wearable device according to any one of claims 1 to 18, wherein, An opening is provided on each of the at least two antenna brackets, and the opening is used to accommodate the spring bar for connecting the wearable member.

20. The wearable device according to any one of claims 1 to 19 further comprises: A screen module, the screen module is disposed on the top surface of the middle frame, and the at least two antenna brackets include a first portion disposed close to the side surface of the middle frame and a second portion disposed close to the top surface of the middle frame.

21. The wearable device according to any one of claims 1 to 20, wherein, The main board is disposed between the at least two antenna brackets and the bottom case.

22. The wearable device according to claim 20 or 21, wherein, A plurality of metal shrapnel are provided on the main board, and the plurality of metal shrapnel extend from the main board to the top surface of the housing and contact the at least two antenna radiators.

23. A manufacturing method of a wearable device, comprising: Obtaining an antenna bracket; Disposing an antenna radiator on at least one surface of the antenna bracket to form an antenna module; Injecting the antenna module into the middle frame body of the wearable device to form a middle frame module; Assembling the middle frame module and the bottom case to form the wearable device.

24. The manufacturing method according to claim 23, wherein, The disposing an antenna radiator on at least one surface of the antenna bracket to form an antenna module includes: Printing an antenna radiator on at least one surface of the antenna bracket by a printing and forming process to form an antenna module.

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