CN113937470A - Wearable electronic device - Google Patents

Abstract

The application discloses wearable electronic equipment belongs to electronic equipment technical field. Wherein, wearable electronic equipment includes: a dial plate; the antenna assembly is arranged on the dial plate and comprises a radiating body; the refraction portion is arranged on the dial plate, is attached to the radiator and covers at least part of the surface of the radiator, and is suitable for changing the radiation direction of the antenna assembly.

Description

Wearable electronic device

Technical Field

The application belongs to the technical field of electronic equipment, concretely relates to wearable electronic equipment.

Background

In the related art, for wearable smart devices such as smart watches, in order to meet wearing comfort requirements and aesthetic requirements, the design space of such wearable devices is more compact, and therefore, more space cannot be provided for arranging an antenna.

At present, devices such as smart watches are limited by the space structure near the antenna, and more targeted directional patterns are difficult to form, resulting in poor signal strength.

Disclosure of Invention

The application aims at providing a wearable electronic device, and the signal intensity of the wearable electronic device can be improved.

The embodiment of the application provides a wearable electronic equipment, includes:

a dial plate;

the antenna assembly is arranged on the dial plate and comprises a radiating body;

and the refraction part is arranged on the dial plate, covers at least part of the surface of the radiation body, and is suitable for concentrating the radiation direction of the antenna assembly or diverging the radiation direction of the antenna assembly.

In an embodiment of the present application, a wearable electronic device is provided, which includes a dial, specifically a metal dial. The wearable electronic device further comprises an antenna assembly, and signals are received and transmitted through the antenna section, so that the wireless communication function is achieved. The antenna assembly includes a radiator capable of receiving and transmitting radio frequency signals. Furthermore, a refraction portion is further provided, and the refraction portion is located on the dial plate and covers at least a part of the outer surface of the radiation body, so as to adjust the radiation direction of the energy emitted by the radiation body, specifically, the radiation direction of the antenna assembly is concentrated towards a specific direction, or the radiation direction of the antenna assembly is diverged towards a wider angle, so that the antenna assembly of the wearable electronic device can obtain a more targeted directional diagram, and the signal strength of the wearable device is effectively improved.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows one of the schematic structural diagrams of a wearable electronic device according to an embodiment of the application;

fig. 2 shows a second schematic structural diagram of a wearable electronic device according to an embodiment of the present application;

FIG. 3 shows a schematic diagram of the propagation of electromagnetic waves in space before and after coordinate transformation;

FIG. 4 shows a schematic structural diagram of a non-metallic dielectric lens according to an embodiment of the present application;

FIG. 5 is a schematic diagram showing the structure of a dielectric body according to an embodiment of the present application.

Reference numerals:

100 wearable electronic device, 102 dial, 1022 metal middle frame, 1024 metal bottom plate, 104 antenna assembly, 1042 radiator, 106 refraction portion, 108 non-metal dielectric lens, 1082 first sub-lens, 1084 second sub-lens, 110 dielectric body.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Wearable electronic devices according to embodiments of the present application are described below with reference to fig. 1 to 5.

In some embodiments of the present application, a wearable electronic device is provided, fig. 1 shows one of the structural schematic diagrams of the wearable electronic device according to an embodiment of the present application, fig. 2 shows a second structural schematic diagram of the wearable electronic device according to an embodiment of the present application, and as shown in fig. 1 and fig. 2, the wearable electronic device 100 includes:

a dial 102;

the antenna assembly 104 is arranged on the dial 102, and the antenna assembly 104 comprises a radiator 1042;

the refraction portion 106 is disposed on the dial 102, the refraction portion 106 covers at least a part of the surface of the radiator 1042, and the refraction portion 106 is adapted to concentrate the radiation direction of the antenna assembly 104 or diverge the radiation direction of the antenna assembly 104.

In this application embodiment, wearable electronic device 100 specifically includes intelligent wrist-watch, intelligent bracelet, intelligent pocket watch etc. and wearable electronic device 100 includes dial plate 102, and this dial plate 102 is wearable electronic device 100's major structure, is formed with the cavity in the dial plate 102, and this cavity can hold wearable electronic device 100's functional component, like main control board, battery, vibrating motor, sensor etc.

The wearable electronic device 100 further includes an antenna assembly 104, and the antenna assembly 104 is used for transmitting and receiving radio frequency signals, so as to implement wireless communication, wireless internet access, GPS (Global positioning system) positioning, and the like. Because the wearable electronic device 100 is generally smaller in size, the design space thereof is more compact, so that the antenna assembly 104 of the wearable electronic device 100 cannot compromise the directivity pattern, and the directivity pattern is random, thereby affecting the signal strength.

In the wearable electronic device 100 provided in the present application, the refraction portion 106 is disposed on the radiation body 1042 of the antenna assembly 104, and the refraction portion 106 may be made of a non-metallic dielectric material, such as FR4 (a fire-resistant material code, including glass cloth, epoxy resin, glass fiber, etc.). By the refraction unit 106, the direction of the radiation energy of the antenna element 104 can be changed, so that the radiation direction of the antenna element is concentrated in a specific direction, or the radiation direction of the antenna element is dispersed in a wider angle, thereby realizing a stable directional pattern and improving the signal strength.

Specifically, the electromagnetic wave behavior can be represented by a cartesian coordinate system. When the reference coordinate system is transformed, the propagation of electromagnetic waves is also transformed. Fig. 3 is a schematic diagram showing propagation directions of electromagnetic waves in space before and after coordinate transformation, as shown in fig. 3, in which (a) is a schematic diagram showing propagation directions of electromagnetic waves in a cartesian coordinate system, and (b) is a schematic diagram showing propagation directions of electromagnetic waves in a transformed warped coordinate system. It can be understood that the electromagnetic space in the reference cartesian coordinate system is considered as a free space, and compared with the cartesian coordinate system before transformation, the transformed distorted coordinate system is only coordinate changed, and the electromagnetic space is still a free space, so that the propagation direction of the electromagnetic wave is changed.

If the distorted coordinate system is changed correspondingly to the electromagnetic material compared to the cartesian coordinate system, the propagation direction of the electromagnetic wave may not be changed, and thus, by changing the dielectric constant of the electromagnetic field propagation medium, the direction control of the electromagnetic wave can be achieved. The coordinate transformation theory relates to two spaces, generally called physical space and virtual space, and transforms the space transformation and the property equivalence of electromagnetic materials in the two spaces before and after transformation, thereby realizing the purpose of controlling electromagnetic waves.

Based on the characteristic that the Maxwell equation system is unchanged in form under different coordinate systems, the field of the space after transformation, namely the physical space, and the electromagnetic material are expressed by the field of the space before transformation, namely the virtual space, and the electromagnetic material by using the Jacobian matrix. That is, the coordinate transformation theory is to make the coordinate transformation relationship between the two spaces before and after transformation equivalent to the electromagnetic material between the two spaces before and after transformation, so as to realize the equivalence of the electromagnetic wave behaviors in the two spaces.

Based on the above principle, this application sets up the refraction portion 106 that covers the at least partial surface of irradiator 1042 outside the irradiator 1042 of antenna module 104, through the dielectric constant of adjustment refraction portion 106, thereby can change the direction of transfer of electrified magnetic wave, thereby set for stable directional diagram according to actual need, and simultaneously, refraction portion 106 only needs to satisfy and has certain dielectric constant, need not external signal, consequently, belong to passive component, can not change wearable electronic equipment 100's original circuit structure, can not increase the circuit design degree of difficulty, can not occupy antenna design space yet.

Through the position and the electromagnetic parameter of reasonable setting refraction portion 106, can realize the control to the digraph, increase the gain of this direction when can satisfying the cover angle on the one hand, improve signal strength, on the other hand can realize radiating to the electromagnetic energy dispersion of human body, reduces the electromagnetic wave Absorption ratio (SAR) value in the in-service use, improves wearable electronic equipment 100's antenna performance.

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

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

In the embodiment of the present application, the refraction portion 106 specifically includes a non-metal dielectric lens 108, and the non-metal dielectric lens 108 includes a plurality of layers of first sub-lenses 1082 arranged in a stacked and attached manner. The first sub-lenses 1082 cover the top of the radiator 1042, so that the electromagnetic wave of the rf signal emitted by the radiator 1042 firstly enters the first sub-lens 1082 and is refracted by the first sub-lens 1082 and then exits.

Specifically, the design of the non-metallic lens may refer to a parabolic reflector antenna, so that the cylindrical wave emitted from the point source of the radiator 1042 is changed into a planar wave through the reflector antenna, and the electromagnetic wave is bundled. Fig. 4 shows a schematic structural diagram of a non-metal dielectric lens according to an embodiment of the present application, and as shown in fig. 4, the overall profile of the non-metal lens may be any shape and is divided into a plurality of layers of first sub-lenses 1082. It can be appreciated that the greater the number of layers of the first sub-lenses 1082, the closer to the ideal distribution, the better the lens effect, but the more the process cost will increase in response.

The electric field of the non-metallic lens is perpendicular to the electric field of the radiator 1042 of the antenna element 104, that is, the electromagnetic wave of the antenna element 104 is a TM wave. The first sub-lens 1082 plays a main role in regulating and controlling the main wave in the electromagnetic wave emitted by the radiation component, so that the transmission direction of the electromagnetic wave can be changed, a stable directional diagram can be set according to actual needs, the directional diagram can be controlled, the coverage angle can be met, the gain of the direction can be increased, the signal intensity can be improved, and the antenna performance of the wearable electronic device 100 can be improved.

In some embodiments of the present application, the dielectric constant of the N first sub-lenses 1082 increases in a direction away from the radiator 1042.

In the present embodiment, the antenna assembly 104 is a communication antenna assembly. Since the direction of the communication signal depends on the relative position between the wearable electronic device 100 and a base station or a Wireless Access Point (AP) device, the directional pattern of the antenna can be widened in order to achieve good reception of radio frequency signals from various directions.

Specifically, in the embodiment of the present application, the dielectric constants of the N first sub-lenses 1082 are gradually increased in a direction away from the radiator 1042, 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 of the two layers of media, the propagation direction of the electromagnetic field can be refracted to the direction deviating from the normal direction, and finally, the electromagnetic energy in the normal direction of the interface of the media is reduced and the energy of the rest part is increased through the reduction of the energy of the electromagnetic field in the unit area perpendicular to the normal direction, so that the effect of widening the directional diagram of the antenna is achieved.

In some embodiments of the present application, the dielectric constant of the N first sub-lenses 1082 decreases in a direction away from the radiator 1042.

In the embodiment of the present application, for the antenna assembly 104 being a positioning antenna assembly, such as a GPS antenna, since the application scenario is relatively single, and the receiving direction of the satellite signal is always fixed, the dielectric constant of the N first sub-lenses 1082 is decreased progressively, so that the electromagnetic energy of the radiator 1042 can be concentrated toward one direction, the radiation performance in the direction can be enhanced, and the signal strength of the signal can be improved.

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

In some embodiments of the present application, the non-metal dielectric lens 108 further includes a second sub-lens 1084, the second sub-lens 1084 is located at a side of the radiator 1042, specifically, disposed around a peripheral side of the first sub-lens 1082, the second sub-lens 1084 is an edge region of the main beam of the radiator 1042, and by disposing the second sub-lens 1084, the beam regulation and control can be assisted, and meanwhile, for the wearable electronic device 100, the radiator 1042 generally shares a structural body with a metal structure of the housing, and therefore, as the housing has different shapes, the disposing environment of the radiator 1042 may be different, and therefore, there is a case that the first sub-lens 1082 disposed on an outer surface of the radiator 1042 is "floating", that is, there is no good connection with the housing body.

Therefore, set up second sub lens 1084, connect first sub lens 1082 and dial plate 102 through second sub lens 1084, can play and carry out the effect of moulding to non-metal medium lens 108, improve the joint strength of non-metal medium lens 108 and dial plate 102, prevent that non-metal medium lens 108 from droing, improve the reliability.

In some embodiments of the present application, the number of the second sub-lenses 1084 is M, the M second sub-lenses 1084 are sequentially attached to each other in a direction away from the radiator 1042, where M is a positive integer;

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

In the embodiment of the present application, the number of the second sub-lenses 1084 is multiple, specifically M, and since the M second sub-lenses 1084 are located at the lateral side of the radiator 1042, specifically, at the edge region of the main beam of the radiator 1042, the beam direction can be adjusted and controlled in an auxiliary manner, a variation trend of the dielectric constants of the M second sub-lenses 1084 is the same as a variation trend of the dielectric constants of the N first sub-lenses 1082.

That is, when the dielectric constants of the N first sub-lenses 1082 are increased in a direction away from the radiator 1042, the dielectric constants of the M second sub-lenses 1084 are also increased in the direction. When the dielectric constants of the N first sub-lenses 1082 decrease in a direction away from the radiator 1042, the dielectric constants of the M second sub-lenses 1084 also decrease in the direction.

In some embodiments of the present application, the thickness of the first sub-lens 1082 decreases in a direction facing the geometric center of the first sub-lens 1082 along the peripheral side of the first sub-lens 1082.

In the embodiment of the present application, the shape of the non-metal dielectric lens 108 is similar to a concave lens, the center of each dielectric layer is thin and the periphery is thick, and the dielectric constant of the dielectric material of the dielectric layer closer to the antenna is lower, so that when the electromagnetic wave reaches the interface of the two first sub-lenses 1082, the propagation direction of the electromagnetic field will be refracted to the direction away from the normal, and finally, the electromagnetic energy per unit area is reduced by being perpendicular to the normal direction, so that the electromagnetic energy in the normal direction of the interface of the dielectric is reduced, and the energy of the rest part is increased, thereby widening the antenna directional diagram.

The position of the geometric center of the first sub-lens 1082 can be adjusted, so that a directional diagram in a specific direction can be expanded, the omni-directional property of the antenna can be enhanced, the network searching capability can be improved, and meanwhile, the energy distribution in the specific direction can be weakened, for example, the energy distribution can be used on the surface of the wearable electronic device 100, which is in contact with a human body, so that the SAR value of a product can be reduced, and the influence of electromagnetic radiation on the human body can be weakened.

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 being formed as a radiator 1042; the metal bottom plate 1024 is connected with the metal middle frame 1022, and the metal bottom plate 1024 is grounded; the radiator 1042 is connected to the metal base 1024.

In this embodiment, for wearable devices such as smart watches, the dial 102 may be a metal frame structure formed integrally, or a structure formed by splicing composite materials. The dial 102 includes a metal middle frame 1022, the metal middle frame 1022 is generally located on the surface of the dial 102, and the metal middle frame 1022 may be a complete circular or rectangular structure or a non-integrated structure provided with a plurality of non-metal power cuts.

Since the metal middle frame 1022 is made of metal, at least a portion of the metal middle frame 1022 may be used as the radiator 1042 of the antenna element 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, is disposed on the metal middle frame 1022, and the feeding line communicates the feeding point and a control board for processing signals, so that the wireless communication function may be achieved by applying signals to the metal middle frame 1022 through the feeding line or collecting signals generated by the metal middle frame 1022 under an external electromagnetic field through the feeding line.

By using the metal middle frame 1022 as the radiator 1042 of the antenna assembly 104, the space of the dial 102 can be maximally utilized, and an efficient antenna layout is realized.

Meanwhile, the dial 102 further includes a metal bottom plate 1024, and specifically, the metal bottom plate 1024 may also serve as a battery compartment cover plate and exist as a grounding component. The functional devices that need grounding, such as the battery, the main control board, the display screen, and the antenna assembly 104 of the wearable electronic device 100, can all be grounded by being connected to the metal base plate 1024.

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

the dielectric body 110 is arranged in the dial 102 and is attached to the inner surface of the radiator 1042 and the metal bottom plate 1024, and the electromagnetic parameters of the dielectric body 110 change with the potential difference between the radiator 1042 and the metal bottom plate 1024.

In the embodiment of the present application, fig. 5 shows a schematic structural diagram of a dielectric body according to the embodiment of the present application, and as shown in fig. 5, a dielectric body 110 is disposed between the radiator 1042 and the metal base 1024, where the dielectric body 110 may be a dielectric material of a device such as a PIN diode or a MOS transistor, and is characterized in that under a direct current voltage, an electromagnetic property thereof is changed, and under the influence of an external voltage, a resistance of the dielectric material such as a PIN diode is changed, and the resistance is positively correlated with a dielectric constant, so that the dielectric body 110 changes an electromagnetic parameter with a change of a potential difference.

Specifically, the metal base plate 1024 is used as a base plate, a low potential is formed, a direct current signal is applied to a feeding point, that is, the radiator 1042, through a feeder line of the antenna assembly 104, a potential difference is formed at two ends of the dielectric body 110, and the electromagnetic parameters of the dielectric body 110 can be adjusted by adjusting a voltage value of the direct current signal, so that the electromagnetic characteristics of the whole dielectric body 110 can be dynamically changed according to the signal transceiving requirements, and the dielectric body is formed into lenses with different electromagnetic parameter distributions, so that the radiation field of the antenna is refracted, directional patterns with different shapes are formed, and the directional patterns can be electrically adjusted.

In the embodiment of the present application, the electromagnetic parameters of the dielectric body 110 are adjusted by applying a voltage, so that the directional pattern of the antenna assembly 104 can be changed accordingly, for example, the radiation direction can be diverged, so as to better receive the radio frequency signals from all directions, thereby achieving the effect of widening the antenna directional pattern. Or the radiation direction is concentrated to one direction, so that the radiation performance in the direction is enhanced, and the signal intensity of the signal is improved.

In some embodiments, since the directional diagram is adjustable, when a user is in an area with weak signals, such as an area in a mountain, a forest, or a sea, the directional diagram can be adjusted to different angles to intensively receive signals in a certain direction, and after the signals are found, the directional diagram is adjusted to enable the maximum radiation direction to face the direction of the searched signals, thereby achieving the effect of enhancing signal reception.

In some embodiments of the present application, wearable electronic device 100 further comprises:

the display device is arranged on the dial 102, and the metal middle frame 1022 surrounds the display device.

In this embodiment, the wearable electronic device 100 includes a display device, a control panel, and an energy storage component, where the display device is a display screen of the electronic device, and specifically may be an LED (Light-Emitting Diode) display screen, an OLED (Organic Light-Emitting Diode), and the like, and the display screen is used for displaying time information and displaying an interface of a corresponding function after receiving a user input.

It is 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.

In some embodiments of the present application, wearable electronic device 100 further comprises:

a control board disposed within the dial 102 and connected to the antenna assembly 104;

an energy storage member is provided within the dial 102 for providing power to the display device, control panel and antenna assembly 104.

The control panel may specifically be a main control panel of the wearable electronic device 100, and a Central Processing Unit (CPU), an operating memory (RAM), a built-in memory (ROM), and a driving member for driving the display device to work are integrally disposed on the control panel, and meanwhile, the control panel may further include a GPS positioning module and a wireless communication module, which are connected to the antenna assembly 104, so as to implement signal transceiving.

The energy storage element may be a battery, which may be a rechargeable lithium battery or a replaceable button battery. The energy storage provides energy to the display device, control panel, and antenna assembly 104, thereby enabling the wearable electronic device 100 to perform its various functions.

Because the refraction portion 106 covering at least part of the surface of the radiation body 1042 is arranged outside the radiation body 1042 of the antenna assembly 104 in the embodiment of the present application, by adjusting the dielectric constant of the refraction portion 106, the transmission direction with electromagnetic waves can be changed, and a stable directional diagram can be set according to actual needs, meanwhile, the refraction portion 106 only needs to satisfy the requirement of having a certain dielectric constant, and does not need an external signal, thereby belonging to a passive component, and the original circuit structure of the wearable electronic device 100 can not be changed, and the difficulty of circuit design can not be increased, and the antenna design space can not be occupied.

Through the position and the electromagnetic parameter of reasonable setting refraction portion 106, can realize the control to the digraph, increase the gain of this direction when can satisfying the cover angle on the one hand, improve signal strength, on the other hand can realize radiating to the electromagnetic energy dispersion of human body, reduces the electromagnetic wave Absorption ratio (SAR) value in the in-service use, improves wearable electronic equipment 100's antenna performance.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A wearable electronic device, comprising:

a dial plate;

the antenna assembly is arranged on the dial plate and comprises a radiating body;

the refraction part is arranged on the dial plate, covers at least part of the surface of the radiation body, and is suitable for enabling the radiation direction of the antenna assembly to be concentrated or enabling the radiation direction of the antenna assembly to be diverged.

2. The wearable electronic device of claim 1, wherein the refractive portion comprises a non-metallic dielectric lens;

the end face of the non-metal dielectric lens is connected with the outer surface of the radiator, the non-metal dielectric lens comprises N first sub-lenses which are sequentially attached to the direction far away from the radiator, the dielectric constants of the N first sub-lenses sequentially change according to a preset change trend, and N is an integer larger than 2.

3. The wearable electronic device of claim 2, wherein the dielectric constant of the N first sub-lenses increases in a direction away from the radiator.

4. The wearable electronic device of claim 2, wherein the dielectric constant of the N first sub-lenses decreases in a direction away from the radiator.

5. The wearable electronic device according to claim 3 or 4, wherein the non-metallic medium lens further comprises a second sub-lens, the second sub-lens is disposed on a peripheral side of the first sub-lens, and the second sub-lens is connected with the first sub-lens and the dial.

6. The wearable electronic device of claim 5, wherein the number of the second sub-lenses is M, the M second sub-lenses are sequentially attached to each other in a direction away from the radiator, and M is a positive integer;

in a direction away from the radiator, a variation trend of the dielectric constants of the M second sub-lenses is the same as a variation trend of the dielectric constants of the N first sub-lenses.

7. The wearable electronic device of claim 3, wherein a thickness at an edge of the first sub-lens is greater than a thickness at a center of the first sub-lens.

8. The wearable electronic device of any of claims 1-4, wherein the dial comprises:

a metal middle frame, at least a portion of which is formed as the radiator;

the metal bottom plate is connected with the metal middle frame and is grounded;

the radiator is connected with the metal base plate.

9. The wearable electronic device of claim 8, further comprising:

and the display device is arranged on the dial plate, and the metal middle frame surrounds the display device.

10. The wearable electronic device of claim 9, further comprising:

the control board is arranged in the dial plate and connected with the antenna assembly;

and the energy storage element is arranged in the dial plate and used for supplying power to the display device, the control panel and the antenna assembly.

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