Wearable electronic device

Abstract

The present application discloses a wearable electronic device, belonging to the technical field of electronic devices. Among them, the wearable electronic device includes: a watch face; an antenna assembly disposed on the watch face, the antenna assembly including a radiator; a refraction part disposed on the watch face, the refraction part being attached to the radiator and covering at least part of the surface of the radiator, and the refraction part being adapted to change the radiation direction of the antenna assembly.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic devices, and specifically relates to a wearable electronic device. Background Art

[0002] In the related art, for wearable smart devices such as smart watches, in order to meet the requirements of wearing comfort and aesthetics, the design space of such wearable devices will be more compact, so it is impossible to provide more space for setting antennas.

[0003] Currently, devices such as smart watches are limited by the spatial structure near the antenna, making it difficult to form a more targeted directional pattern, resulting in poor signal strength. Summary of the invention

[0004] The present application aims to provide a wearable electronic device capable of improving the signal strength of the wearable electronic device.

[0005] The present application embodiment provides a wearable electronic device, including:

[0006] dial;

[0007] An antenna assembly is arranged on the dial, and the antenna assembly includes a radiator;

[0008] The refraction part is arranged on the dial, and covers at least a part of the surface of the radiator. The refraction part is suitable for concentrating the radiation direction of the antenna component, or diverging the radiation direction of the antenna component.

[0009] In an embodiment of the present application, a wearable electronic device is provided, and the wearable electronic device includes a dial, which is specifically a metal dial. The wearable electronic device also includes an antenna assembly, and receives and sends signals through the antenna interval, thereby realizing a wireless communication function. The antenna assembly includes a radiator, and the radiator can receive and transmit radio frequency signals. Furthermore, a refraction portion is also provided, and the refraction portion is located on the dial and covers at least a portion of the outer surface of the radiator, so as to adjust the radiation direction of the energy emitted by the radiator, specifically to concentrate the radiation direction of the antenna assembly in a specific direction, or to diverge the radiation direction of the antenna assembly in a wider angle, so that the antenna assembly of the wearable electronic device can obtain a more targeted directional pattern, thereby effectively improving the signal strength of the wearable device.

[0010] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 One of the structural schematic diagrams of a wearable electronic device according to an embodiment of the present application is shown;

[0013] Figure 2 A second structural schematic diagram of a wearable electronic device according to an embodiment of the present application is shown;

[0014] Figure 3 A schematic diagram showing the propagation of electromagnetic waves in space before and after coordinate transformation is shown;

[0015] Figure 4 A schematic structural diagram of a non-metallic medium lens according to an embodiment of the present application is shown;

[0016] Figure 5 A schematic structural diagram of a dielectric body according to an embodiment of the present application is shown.

[0017] Reference numerals:

[0018] 100 wearable electronic device, 102 dial, 1022 metal middle frame, 1024 metal bottom plate, 104 antenna assembly, 1042 radiator, 106 refraction part, 108 non-metallic dielectric lens, 1082 first sub-lens, 1084 second sub-lens, 110 dielectric. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0020] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] Combine the following Figures 1 to 5 A wearable electronic device according to an embodiment of the present application is described.

[0024] In some embodiments of the present application, a wearable electronic device is provided. Figure 1 FIG. 1 shows one of the structural schematic diagrams of a wearable electronic device according to an embodiment of the present application. Figure 2 FIG. 2 shows a second structural diagram of a wearable electronic device according to an embodiment of the present application. Figure 1 and Figure 2 As shown, the wearable electronic device 100 includes:

[0025] Dial 102;

[0026] The antenna assembly 104 is disposed on the dial 102 , and the antenna assembly 104 includes a radiator 1042 ;

[0027] The refraction portion 106 is disposed on the dial 102 . The refraction portion 106 covers at least a portion of the surface of the radiator 1042 . The refraction portion 106 is suitable for concentrating the radiation direction of the antenna assembly 104 or diverging the radiation direction of the antenna assembly 104 .

[0028] In an embodiment of the present application, the wearable electronic device 100 specifically includes a smart watch, a smart bracelet, a smart pocket watch, etc. The wearable electronic device 100 includes a dial 102, which is the main structure of the wearable electronic device 100. A cavity is formed in the dial 102, which can accommodate functional components of the wearable electronic device 100, such as a main control board, a battery, a vibration motor, a sensor, etc.

[0029] The wearable electronic device 100 also includes an antenna assembly 104, through which radio frequency signals are received and sent, thereby achieving wireless communication, wireless Internet access, GPS (Global Positioning System) positioning, etc. Since the wearable electronic device 100 is generally small in size, its design space will be more compact, resulting in the antenna assembly 104 of the wearable electronic device 100 being unable to take into account the directional pattern, resulting in a random directional pattern, which affects the signal strength.

[0030] The wearable electronic device 100 provided in the present application is provided with a refraction part 106 on the radiator 1042 of the antenna component 104. The refraction part 106 may be made of a non-metallic dielectric material, such as FR4 (a code for a flame-resistant material, including glass cloth, epoxy resin, glass fiber, etc.) dielectric material. Through the refraction part 106, the direction of the radiation energy of the antenna component 104 can be changed, so that the radiation direction of the antenna component is concentrated in a specific direction, or the radiation direction of the antenna component is diverged at a wider angle, so as to achieve a stable directional pattern and improve the signal strength.

[0031] Specifically, the behavior of electromagnetic waves can be represented by a Cartesian coordinate system. When the reference coordinate system is transformed, the propagation of electromagnetic waves will also be transformed. Figure 3 The schematic diagram of electromagnetic wave propagation in space before and after coordinate transformation is shown in Fig. Figure 3 As shown, part (a) shows the propagation direction of electromagnetic waves in the Cartesian coordinate system, and part (b) shows the propagation direction of electromagnetic waves in the transformed distorted coordinate system. It can be understood that the electromagnetic space in the reference Cartesian coordinate system is considered to be a free space, and compared with the Cartesian coordinate system before the transformation, the transformed distorted coordinate system only has a changed coordinate, while the electromagnetic space is still a free space, so the propagation direction of the electromagnetic wave has changed.

[0032] If the electromagnetic material corresponding to the distorted coordinate system changes compared to the Cartesian coordinate system, the propagation direction of the electromagnetic wave may remain unchanged. Therefore, by changing the dielectric constant of the electromagnetic field propagation medium, the direction of the electromagnetic wave can be controlled. The coordinate transformation theory involves two spaces, generally referred to as physical space and virtual space. It transforms the space transformation and the electromagnetic material properties of the two spaces before and after the transformation into equivalent transformations, thereby achieving the purpose of controlling electromagnetic waves.

[0033] Among them, based on the fact that the Maxwell equations remain unchanged in different coordinate systems, the Jacobian matrix is ​​used to represent the field and electromagnetic materials of the transformed space, i.e., the physical space, with the known field and electromagnetic materials of the virtual space before the transformation. In other words, the coordinate transformation theory is to make the coordinate transformation relationship of the two spaces before and after the transformation equivalent to the electromagnetic materials of the two spaces before and after the transformation, so as to achieve the equivalence of the electromagnetic wave behavior in the two spaces.

[0034] Based on the above principle, the present application sets a refraction part 106 covering at least part of the surface of the radiator 1042 outside the radiator 1042 of the antenna assembly 104. By adjusting the dielectric constant of the refraction part 106, the transmission direction of the electromagnetic wave can be changed, so as to set a stable radiation pattern according to actual needs. At the same time, the refraction part 106 only needs to have a certain dielectric constant and does not require an external signal. Therefore, it is a passive component, which will not change the original circuit structure of the wearable electronic device 100, will not increase the difficulty of circuit design, and will not occupy the antenna design space.

[0035] By reasonably setting the position and electromagnetic parameters of the refraction part 106, the radiation pattern can be controlled. On the one hand, the gain in this direction can be increased while meeting the coverage angle, thereby improving the signal strength. On the other hand, the electromagnetic energy radiated to the human body can be dispersed, thereby reducing the specific absorption rate (SAR) value in actual use and improving the antenna performance of the wearable electronic device 100.

[0036] In some embodiments of the present application, the refractive portion 106 includes a non-metallic dielectric lens 108;

[0037] Among them, the end face of the non-metallic dielectric lens 108 is connected to the outer surface of the radiator 1042, and the non-metallic dielectric lens 108 includes N first sub-lenses 1082 that are sequentially attached in the direction away from the radiator 1042, and the dielectric constants of the N first sub-lenses 1082 change sequentially according to a preset change trend, and N is an integer greater than 2.

[0038] In the embodiment of the present application, the refraction part 106 specifically includes a non-metallic dielectric lens 108, and the non-metallic dielectric lens 108 includes multiple layers of superimposed and bonded first sub-lenses 1082. These first sub-lenses 1082 cover the top position of the radiator 1042, so the electromagnetic wave of the radio frequency signal emitted by the radiator 1042 will first enter the first sub-lens 1082, and then be emitted after being refracted by the first sub-lens 1082.

[0039] Specifically, the design of the non-metallic lens can refer to the parabolic reflector antenna, so the cylindrical wave emitted by the radiator 1042 point source is converted into a plane wave through the reflector antenna, and the electromagnetic wave is bundled. Figure 4 FIG. 4 shows a schematic structural diagram of a non-metallic medium lens according to an embodiment of the present application. Figure 4 As shown, the overall profile of the non-metallic lens can be any shape and is divided into multiple layers of first sub-lenses 1082. It can be understood that the more layers of the first sub-lenses 1082, the closer to the ideal distribution, the better the lens effect, but the process cost will increase accordingly.

[0040] The electric field of the non-metallic lens is perpendicular to the electric field of the radiator 1042 of the antenna assembly 104, that is, the electromagnetic wave of the antenna assembly 104 is a TM wave. The first sub-lens 1082 plays a major role in regulating the main wave of the electromagnetic wave emitted by the radiating assembly, thereby changing the transmission direction of the electromagnetic wave, thereby setting a stable directional pattern according to actual needs, realizing the control of the directional pattern, and being able to meet the coverage angle while increasing the gain in the direction, improving the signal strength, and improving the antenna performance of the wearable electronic device 100.

[0041] In some embodiments of the present application, the dielectric constants of the N first sub-lenses 1082 increase gradually in a direction away from the radiator 1042 .

[0042] In the embodiment of the present application, the antenna assembly 104 is a communication antenna assembly. Since the direction of the communication signal depends on the relative position of the wearable electronic device 100 and the base station or wireless access point (AP) device, in order to achieve good reception of radio frequency signals from all directions, the antenna directional pattern can be widened.

[0043] Specifically, the dielectric constants of the N first sub-lenses 1082 are set to increase in the direction away from the radiator 1042 in the embodiment of the present application, that is, the dielectric constant of the dielectric material of the first sub-lens 1082 closer to the radiator 1042 is lower. Therefore, when the electromagnetic wave reaches the interface between the two layers of the medium, the propagation direction of the electromagnetic field will be refracted away from the normal direction. Finally, by reducing the electromagnetic field energy per unit area perpendicular to the normal direction, the electromagnetic energy in the normal direction of the medium interface is reduced, while the energy of the remaining part is increased, so as to achieve the effect of widening the antenna pattern.

[0044] In some embodiments of the present application, the dielectric constants of the N first sub-lenses 1082 decrease in a direction away from the radiator 1042 .

[0045] In the embodiment of the present application, when the antenna component 104 is a positioning wire component, such as a GPS antenna, since the application scenario is relatively simple and the receiving direction of the satellite signal is always fixed, the dielectric constants of the N first sub-lenses 1082 are set to decrease, which can concentrate the electromagnetic energy of the radiator 1042 in one direction, enhance the radiation performance in this direction, and thus improve the signal strength of this type of signal.

[0046] In some embodiments of the present application, the non-metallic medium lens 108 further includes a second sub-lens 1084 , which is disposed on the peripheral side of the first sub-lens 1082 , and the second sub-lens 1084 is connected to the first sub-lens 1082 and the dial 102 .

[0047] In some embodiments of the present application, the non-metallic medium lens 108 also includes a second sub-lens 1084, which is located on the side of the radiator 1042, specifically around the first sub-lens 1082. The second sub-lens 1084 is the edge area of ​​the main beam of the radiator 1042. By setting the second sub-lens 1084, it can play an auxiliary role in beam control. At the same time, for the wearable electronic device 100, its radiator 1042 generally shares a structure with the metal structure of the shell. Therefore, as the shape of the shell is different, the setting environment of the radiator 1042 may be different. Therefore, there is a situation where the first sub-lens 1082 set on the outer surface of the radiator 1042 is "floating", that is, there is no good connection with the shell body.

[0048] Therefore, a second sub-lens 1084 is provided, and the first sub-lens 1082 and the dial 102 are connected via the second sub-lens 1084, so as to shape the non-metallic medium lens 108, improve the connection strength between the non-metallic medium lens 108 and the dial 102, prevent the non-metallic medium lens 108 from falling off, and improve reliability.

[0049] In some embodiments of the present application, the number of the second sub-lenses 1084 is M, and the M second sub-lenses 1084 are sequentially arranged in a direction away from the radiator 1042, and M is a positive integer;

[0050] In the direction away from the radiator 1042 , the variation trend of the dielectric constants of the M second sub-lenses 1084 is the same as the variation trend of the dielectric constants of the N first sub-lenses 1082 .

[0051] In the embodiment of the present application, the number of the second sub-lenses 1084 is also multiple, specifically M. Since the M second sub-lenses 1084 are located on the side of the radiator 1042, specifically at the edge area of ​​the main beam of the radiator 1042, they can assist in controlling the beam direction. Therefore, the change trend of the dielectric constant of the M second sub-lenses 1084 is the same as the change trend of the dielectric constant of the N first sub-lenses 1082.

[0052] That is, when the dielectric constants of the N first sub-lenses 1082 increase in the direction away from the radiator 1042, the dielectric constants of the M second sub-lenses 1084 also increase in the direction. When the dielectric constants of the N first sub-lenses 1082 decrease in the direction away from the radiator 1042, the dielectric constants of the M second sub-lenses 1084 also decrease in the direction.

[0053] In some embodiments of the present application, the thickness of the first sub-lens 1082 decreases along the circumference of the first sub-lens 1082 in a direction toward the geometric center of the first sub-lens 1082 .

[0054] In the embodiment of the present application, the shape of the non-metallic dielectric lens 108 is similar to a concave lens, each dielectric layer is thin in the middle and thick around the edges, and the dielectric constant of the dielectric material of the dielectric layer closer to the antenna is lower. In this way, when the electromagnetic wave reaches the interface between the two first sub-lenses 1082, the propagation direction of the electromagnetic field will refract away from the normal direction. Ultimately, the electromagnetic field energy per unit area is reduced in the direction perpendicular to the normal, thereby reducing the electromagnetic energy in the normal direction of the dielectric interface and increasing the remaining energy, thereby widening the antenna radiation pattern.

[0055] Among them, by adjusting the position of the geometric center of the first sub-lens 1082, it is possible to expand the directional pattern in a specific direction, enhance the omnidirectionality of the antenna, and improve the network search capability. At the same time, the energy distribution in a specific direction can be weakened. For example, it can be used on the surface of the wearable electronic device 100 that contacts the human body, thereby reducing the product SAR value and reducing the impact of electromagnetic radiation on the human body.

[0056] In some embodiments of the present application, the dial 102 includes: a metal middle frame 1022, at least a portion of the metal middle frame 1022 is formed as a radiator 1042; a metal bottom plate 1024, which is connected to the metal middle frame 1022 and the metal bottom plate 1024 is grounded; wherein the radiator 1042 is connected to the metal bottom plate 1024.

[0057] In the embodiment of the present application, for wearable devices such as smart watches, the dial 102 can be an integrally formed metal frame structure, or a structure composed of composite materials. The dial 102 includes a metal middle frame 1022, which is generally located on the surface of the dial 102. The metal middle frame 1022 can be a complete circular or rectangular structure, or a non-integrated structure with multiple non-metallic power cutouts.

[0058] Since the metal middle frame 1022 is made of metal, at least a portion of the metal middle frame 1022 can be used as a radiator 1042 of the antenna assembly 104. Specifically, the antenna assembly 104 may include a radiator 1042, a feeding point, and a feeding line. The feeding point is located on the radiator 1042, that is, it is set on the metal middle frame 1022. The feeding line connects the feeding point and a control board for processing signals. Therefore, by applying a signal to the metal middle frame 1022 through the feeding line, or collecting a signal generated by the metal middle frame 1022 under an external electromagnetic field through the feeding line, a wireless communication function can be realized.

[0059] By using the metal middle frame 1022 as the radiator 1042 of the antenna assembly 104, the space of the dial 102 can be maximized to achieve efficient antenna layout.

[0060] At the same time, the dial 102 also includes a metal bottom plate 1024. Specifically, the metal bottom plate 1024 can also serve as a battery compartment cover and a grounding component. Functional components of the wearable electronic device 100 that need to be grounded, such as the battery, main control board, display screen, and antenna assembly 104, can all be grounded by connecting to the metal bottom plate 1024.

[0061] In some embodiments of the present application, the refraction portion 106 includes:

[0062] The dielectric 110 is disposed in the dial 102 and is in contact with the inner surface of the radiator 1042 and the metal base plate 1024 . The electromagnetic parameters of the dielectric 110 change with the potential difference between the radiator 1042 and the metal base plate 1024 .

[0063] In the embodiments of the present application, Figure 5 Schematic diagram of the structure of the dielectric body according to the embodiment of the present application is shown as follows: Figure 5 As shown, a dielectric 110 is arranged between the radiator 1042 and the metal base plate 1024. The dielectric 110 can be a dielectric material of a device such as a PIN diode or a MOS tube. Its characteristic is that its electromagnetic properties will also change under a DC voltage. For example, the dielectric material of a PIN diode will also change its resistance under the influence of an external voltage, and the resistance is positively correlated with the dielectric constant. Therefore, the electromagnetic parameters of the dielectric 110 will change as the potential difference changes.

[0064] Specifically, the metal base plate 1024 is used as the base plate to form a low potential. At the same time, a DC signal is applied to the feeding point, that is, the radiator 1042, through the feed line of the antenna component 104. A potential difference is formed at both ends of the dielectric 110. By adjusting the voltage value of the DC signal, the electromagnetic parameters of the dielectric 110 can be adjusted, so that the entire dielectric 110 can dynamically change the electromagnetic characteristics according to the signal reception and transmission requirements, forming a lens with different electromagnetic parameter distributions, causing the radiation field of the antenna to refract, forming directional patterns of different shapes, and realizing an electrically adjustable directional pattern.

[0065] In the embodiment of the present application, since the electromagnetic parameters of the dielectric 110 are adjusted by applying voltage, the directional pattern of the antenna assembly 104 can be changed accordingly, such as making the radiation direction divergent to better receive radio frequency signals from all directions, thereby achieving the effect of widening the antenna directional pattern. Or the radiation direction is concentrated in one direction, so that the radiation performance in this direction is enhanced, thereby improving the signal strength of such signals.

[0066] In some embodiments, since the directivity pattern is adjustable, when the user is in an area with weak signals, such as deep mountains, forests, and the sea, the directivity pattern can be adjusted to different angles to concentrate on receiving signals in a certain direction. When the signal is found, the directivity pattern is adjusted so that the maximum radiation direction is toward the direction of the searched signal, thereby achieving the effect of enhancing signal reception.

[0067] In some embodiments of the present application, the wearable electronic device 100 further includes:

[0068] The display device is disposed on the dial 102 , and the metal middle frame 1022 surrounds the display device.

[0069] In an embodiment of the present application, the wearable electronic device 100 includes a display device, a control panel and an energy storage device, wherein the display device is a display screen of the electronic device, which may be a LED (Light-Emitting Diode) display screen, an OLED (Organic Light-Emitting Diode), etc. The display screen is used to display time information and display an interface of a corresponding function after receiving user input.

[0070] It can be understood that the display device is preferably a touch screen, and the user can control the operation of the wearable electronic device 100 by performing touch input on the display screen.

[0071] In some embodiments of the present application, the wearable electronic device 100 further includes:

[0072] A control panel, disposed in the dial 102 and connected to the antenna assembly 104;

[0073] The energy storage component is disposed in the dial 102 and is used to supply power to the display device, the control panel and the antenna assembly 104 .

[0074] The control board can specifically be the main control board of the wearable electronic device 100, on which a central processing unit (CPU), running memory (RAM), built-in memory (ROM) and a driver for driving the display device are integrated. At the same time, the control board can also include a GPS positioning module and a wireless communication module, and the GPS positioning module and the wireless communication module are connected to the antenna assembly 104 to realize signal reception and transmission.

[0075] The energy storage component may be a battery, which may be a rechargeable lithium battery or a replaceable button battery. The energy storage component provides energy to the display device, the control panel and the antenna assembly 104, so that the wearable electronic device 100 can realize its various functions.

[0076] Among them, since the embodiment of the present application provides a refraction portion 106 covering at least a portion of the surface of the radiator 1042 outside the radiator 1042 of the antenna assembly 104, the transmission direction of the electromagnetic wave can be changed by adjusting the dielectric constant of the refraction portion 106, so as to set a stable radiation pattern according to actual needs. At the same time, the refraction portion 106 only needs to have a certain dielectric constant and does not require an external signal. Therefore, it is a passive component, will not change the original circuit structure of the wearable electronic device 100, will not increase the difficulty of circuit design, and will not occupy the antenna design space.

[0077] By reasonably setting the position and electromagnetic parameters of the refraction part 106, the radiation pattern can be controlled. On the one hand, the gain in this direction can be increased while meeting the coverage angle, thereby improving the signal strength. On the other hand, the electromagnetic energy radiated to the human body can be dispersed, thereby reducing the specific absorption rate (SAR) value in actual use and improving the antenna performance of the wearable electronic device 100.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A wearable electronic device, characterized in that, it includes: a watch face; an antenna assembly disposed on the watch face, the antenna assembly including a radiator; a refraction part disposed on the watch face, the refraction part covering at least part of the surface of the radiator, and the refraction part being adapted to concentrate or diverge the radiation direction of the antenna assembly; the refraction part includes a non-metallic dielectric lens; wherein, an end face of the non-metallic dielectric lens is connected to an outer surface of the radiator, the non-metallic dielectric lens includes N first sub-lenses that are sequentially attached in a direction away from the radiator, and the dielectric constants of the N first sub-lenses change sequentially according to a preset change trend, and N is an integer greater than 2; the non-metallic dielectric lens further includes a second sub-lens, the second sub-lens is disposed on the periphery of the first sub-lens, and the second sub-lens is connected to the first sub-lens and the watch face; the number of the second sub-lenses is M, and the M second sub-lenses are sequentially attached in a direction away from the radiator, and M is a positive integer; wherein, in a direction away from the radiator, the change trend of the dielectric constants of the M second sub-lenses is the same as the change trend of the dielectric constants of the N first sub-lenses.

2. The wearable electronic device according to claim 1, characterized in that, in a direction away from the radiator, the dielectric constants of the N first sub-lenses increase.

3. The wearable electronic device according to claim 1, characterized in that, in a direction away from the radiator, the dielectric constants of the N first sub-lenses decrease.

4. The wearable electronic device according to claim 3, characterized in that, the thickness at the edge of the first sub-lens is greater than the thickness at the center of the first sub-lens.

5. The wearable electronic device according to any one of claims 1 to 3, characterized in that, the watch face includes: a metal middle frame, at least part of the metal middle frame forms the radiator; a metal bottom plate, connected to the metal middle frame, and the metal bottom plate is grounded; wherein, the radiator is connected to the metal bottom plate.

6. The wearable electronic device according to claim 5, characterized in that, it further includes: a display device disposed on the watch face, and the metal middle frame surrounds the display device.

7. The wearable electronic device according to claim 6, characterized in that, it further includes: a control board disposed inside the watch face and connected to the antenna assembly; a power storage component disposed inside the watch face for supplying power to the display device, the control board and the antenna assembly.

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