Circularly polarized antenna and wearable electronic equipment

Abstract

The invention is suitable for the technical field of antennas, and provides a circularly polarized antenna and wearable electronic equipment. The circularly polarized antenna comprises a first arc-shaped radiator and a second arc-shaped radiator, and the first arc-shaped radiator and the second arc-shaped radiator are arranged at an interval and are located on the same circumference. Any one of the first arc-shaped radiator and the second arc-shaped radiator is provided with a first grounding point, the other one of the first arc-shaped radiator and the second arc-shaped radiator is provided with a feeding point, and the first arc-shaped radiator and the second arc-shaped radiator are used for receiving a first circular polarization signal. According to the circularly polarized antenna provided by the embodiment of the invention, the two arc-shaped radiators are utilized to form the circularly polarized antenna, and a complete circular ring radiator does not need to be manufactured, so that the length of the antenna is reduced, the miniaturization design of the circularly polarized antenna is facilitated, and the design difficulty of the circularly polarized antenna is reduced.

Description

Circularly polarized antenna and wearable electronic device Technical Field

[0001] The present application belongs to the field of antenna technology, and in particular relates to a circularly polarized antenna and a wearable electronic device. Background Art

[0002] With the rapid development of wireless communication terminal technology, wearable electronic devices have emerged in people's sight. Wearable electronic devices are equipped with circularly polarized antennas for receiving circularly polarized signals, so that wearable electronic devices have positioning functions.

[0003] The circularly polarized antenna in existing wearable electronic devices is set on the watch ring. For non-metallic watch rings, a complete circular metal body needs to be made on the watch ring to form a circularly polarized antenna. However, the small size and complex internal environment of wearable electronic devices make the design of circularly polarized antennas very difficult. Technical issues

[0004] One of the purposes of the embodiments of the present application is to provide a circularly polarized antenna and a wearable electronic device, which can solve the problem of difficulty in designing circularly polarized antennas in wearable electronic devices. Technical Solutions

[0005] The technical solution adopted in the embodiment of this application is:

[0006] In a first aspect, an embodiment of the present application provides a circularly polarized antenna, comprising a first arc-shaped radiator and a second arc-shaped radiator, wherein the first arc-shaped radiator and the second arc-shaped radiator are arranged at intervals, and the first arc-shaped radiator and the second arc-shaped radiator are located on the same circumference. A first grounding point is provided on any one of the first arc-shaped radiator and the second arc-shaped radiator, and a feeding point is provided on the other one of the first arc-shaped radiator and the second arc-shaped radiator, and the first arc-shaped radiator and the second arc-shaped radiator are used to receive a first circularly polarized signal.

[0007] In a possible implementation of the first aspect, the arc length between the first end of the first arc radiator and the second end of the second arc radiator is smaller than the arc length between the second end of the first arc radiator and the first end of the second arc radiator, and the arc angle of the arc between the first end of the first arc radiator and the second end of the second arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0008] In a possible implementation manner of the first aspect, the equivalent length of the first arc-shaped radiator is the same as the equivalent length of the second arc-shaped radiator;

[0009] The feeding point is provided at a first end portion of the first arc-shaped radiator, and the first grounding point is provided at a first end portion of the second arc-shaped radiator;

[0010] or,

[0011] The feeding point is provided at the second end of the first arc-shaped radiator, and the first grounding point is provided at the second end of the second arc-shaped radiator;

[0012] or,

[0013] The first grounding point is provided at a first end portion of the first arc-shaped radiator, and the feeding point is provided at a first end portion of the second arc-shaped radiator;

[0014] or,

[0015] The first grounding point is arranged at the second end of the first arc-shaped radiator, and the feeding point is arranged at the second end of the second arc-shaped radiator.

[0016] In a possible implementation of the first aspect, the circularly polarized antenna further includes a third arc-shaped radiator, where the third arc-shaped radiator, the first arc-shaped radiator, and the second arc-shaped radiator are spaced apart from each other, are located on the same circumference, and a second grounding point is provided on the third arc-shaped radiator.

[0017] The third arc-shaped radiator and the first arc-shaped radiator are used to receive a second circularly polarized signal, or the third arc-shaped radiator and the second arc-shaped radiator are used to receive a second circularly polarized signal.

[0018] In a possible implementation of the first aspect, the arc length between the second end of the first arc radiator and the first end of the third arc radiator is less than the arc length between the first end of the first arc radiator and the second end of the third arc radiator, and the arc angle of the arc between the second end of the first arc radiator and the first end of the third arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0019] In a possible implementation of the first aspect, the first grounding point is set at a first end of the first arc-shaped radiator, the feeding point is set at a first end of the second arc-shaped radiator, and the second grounding point is set at a first end of the third arc-shaped radiator;

[0020] or,

[0021] The feeding point is arranged at the first end of the first arc radiator, the first grounding point is arranged at the first end of the second arc radiator, and the second grounding point is arranged at the first end of the third arc radiator.

[0022] In a possible implementation of the first aspect, the arc length between the first end of the second arc radiator and the second end of the third arc radiator is less than the arc length between the second end of the second arc radiator and the first end of the third arc radiator, and the arc angle of the arc between the first end of the second arc radiator and the second end of the third arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0023] In a possible implementation of the first aspect, the feeding point is provided at a first end portion of the first arc-shaped radiator, the first grounding point is provided at a first end portion of the second arc-shaped radiator, and the second grounding point is provided at a first end portion of the third arc-shaped radiator;

[0024] or,

[0025] The feeding point is arranged at the first end of the first arc radiator, the first grounding point is arranged at the first end of the second arc radiator, and the second grounding point is arranged at the second end of the third arc radiator.

[0026] In a possible implementation manner of the first aspect, the equivalent length of the first arc-shaped radiator is different from the equivalent length of the second arc-shaped radiator;

[0027] The feeding point is provided at a first end portion of the first arc-shaped radiator, and the first grounding point is provided at a second end portion of the second arc-shaped radiator;

[0028] or,

[0029] The feeding point is arranged at the second end of the first arc-shaped radiator, and the first grounding point is arranged at the first end of the second arc-shaped radiator;

[0030] or,

[0031] The first grounding point is provided at a first end portion of the first arc-shaped radiator, and the feeding point is provided at a second end portion of the second arc-shaped radiator;

[0032] or,

[0033] The first grounding point is arranged at the second end of the first arc-shaped radiator, and the feeding point is arranged at the first end of the second arc-shaped radiator.

[0034] In a possible implementation of the first aspect, the circularly polarized antenna further includes a third arc-shaped radiator, where the third arc-shaped radiator, the first arc-shaped radiator, and the second arc-shaped radiator are spaced apart from each other, are located on the same circumference, and a second grounding point is provided on the third arc-shaped radiator.

[0035] The third arc-shaped radiator and the first arc-shaped radiator are used to receive a second circularly polarized signal.

[0036] In a possible implementation of the first aspect, the arc length between the second end of the first arc radiator and the first end of the third arc radiator is less than the arc length between the first end of the first arc radiator and the second end of the third arc radiator, and the arc angle of the arc between the second end of the first arc radiator and the first end of the third arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0037] In a possible implementation of the first aspect, the first grounding point is set at a first end of the first arc-shaped radiator, the feeding point is set at a second end of the second arc-shaped radiator, and the second grounding point is set at a first end of the third arc-shaped radiator;

[0038] or;

[0039] The feeding point is arranged at the first end of the first arc radiator, the first grounding point is arranged at the second end of the second arc radiator, and the second grounding point is arranged at the first end of the third arc radiator.

[0040] In a second aspect, an embodiment of the present application provides a wearable electronic device, comprising a housing, a position determination element, and the circularly polarized antenna according to any one of the first aspects, wherein the housing comprises a bottom wall and a side wall connected to the bottom wall, the circularly polarized antenna is disposed on the side wall, and the position determination element is coupled to the circularly polarized antenna;

[0041] The circularly polarized antenna is used to receive a first circularly polarized signal and transmit the first circularly polarized signal to the position determining element. The position determining element is used to determine a current geographical location according to the first circularly polarized signal. Beneficial effects

[0042] The circularly polarized antenna provided in an embodiment of the present application includes a first arc-shaped radiator and a second arc-shaped radiator, the first arc-shaped radiator and the second arc-shaped radiator are arranged at intervals, the first arc-shaped radiator and the second arc-shaped radiator are located on the same circumference, a first grounding point is provided on any one of the first arc-shaped radiator and the second arc-shaped radiator, a feeding point is provided on the other one of the first arc-shaped radiator and the second arc-shaped radiator, and the first arc-shaped radiator and the second arc-shaped radiator are used to receive a first circularly polarized signal.

[0043] The circularly polarized antenna provided in the embodiment of the present application utilizes two arc-shaped radiators (a first arc-shaped radiator and a second arc-shaped radiator) to form a circularly polarized antenna. There is no need to make a complete circular ring radiator, which reduces the length of the antenna and is conducive to the miniaturization design of the circularly polarized antenna. At the same time, the two arc-shaped radiators can be flexibly designed in a wearable electronic device, reducing the design difficulty of the circularly polarized antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] FIG1 is a schematic structural diagram of a circularly polarized antenna provided in one embodiment of the present application;

[0046] 2 is a current distribution diagram of a circularly polarized antenna receiving a first frequency signal in a first mode and a second frequency signal in a second mode when the equivalent length of the first arc-shaped radiator is the same as the equivalent length of the second arc-shaped radiator provided in one embodiment of the present application;

[0047] FIG3 is a schematic structural diagram of a circularly polarized antenna provided in another embodiment of the present application;

[0048] FIG4 is a schematic structural diagram of a circularly polarized antenna provided in another embodiment of the present application;

[0049] FIG5 is a schematic structural diagram of a circularly polarized antenna provided in another embodiment of the present application;

[0050] FIG6 is a schematic structural diagram of a circularly polarized antenna provided in another embodiment of the present application;

[0051] 7 is a current distribution diagram of the circularly polarized antenna when the first mode receives a third frequency signal and the second mode receives a fourth frequency signal, when the equivalent length of the first arc-shaped radiator is different from the equivalent length of the second arc-shaped radiator provided in one embodiment of the present application;

[0052] FIG8 is a schematic structural diagram of a circularly polarized antenna provided in another embodiment of the present application;

[0053] FIG9 is a schematic structural diagram of a circularly polarized antenna provided in another embodiment of the present application.

[0054] In the figure: 100, first arc radiator; 200, second arc radiator; 300, feeding point; 400, first grounding point; 500, third arc radiator; 600, second grounding point. Modes for Carrying Out the Invention

[0055] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0056] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0057] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0058] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0059] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0060] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0061] FIG1 is a schematic structural diagram of a circularly polarized antenna provided in one embodiment of the present application. Referring to FIG1 , the circularly polarized antenna includes a first arc-shaped radiator 100 and a second arc-shaped radiator 200. The first arc-shaped radiator 100 and the second arc-shaped radiator 200 are spaced apart and located on the same circumference. A first grounding point 400 is provided on either the first arc-shaped radiator 100 or the second arc-shaped radiator 200, and a feeding point 300 is provided on the other of the first arc-shaped radiator 100 and the second arc-shaped radiator 200. The first arc-shaped radiator 100 and the second arc-shaped radiator 200 are configured to receive a first circularly polarized signal.

[0062] Specifically, the first curved radiator 100 and the second curved radiator 200 are spaced apart and located on the same circumference. A first grounding point 400 is provided on either the first curved radiator 100 or the second curved radiator 200, and a feeding point 300 is provided on the other of the first curved radiator 100 and the second curved radiator 200. Figure 1(a) shows the feeding point 300 provided on the first curved radiator 100 and the first grounding point 400 provided on the second curved radiator 200. Figure 1(b) shows the first grounding point 400 provided on the first curved radiator 100 and the feeding point 300 provided on the second curved radiator 200.

[0063] Through the above design, the first arc-shaped radiator 100 and the second arc-shaped radiator 200 form a circularly polarized antenna that can receive a first circularly polarized signal. Compared to the prior art method that requires a complete circular metal ring to be fabricated on the watch band to form a circularly polarized antenna, the circularly polarized antenna provided in the embodiment of the present application utilizes two arc-shaped radiators (the first arc-shaped radiator 100 and the second arc-shaped radiator 200) to form a circularly polarized antenna. This eliminates the need for a complete circular radiator, reduces the length of the antenna, and facilitates the miniaturization of the circularly polarized antenna. Furthermore, the two arc-shaped radiators can be flexibly designed into a wearable electronic device, reducing the design difficulty of the circularly polarized antenna.

[0064] Designers can design the equivalent length of the first arc radiator 100 and the equivalent length of the second arc radiator 200 according to actual needs, but need to ensure that the equivalent length of the first arc radiator 100 and the equivalent length of the second arc radiator 200 are the same, so that the circularly polarized antenna receives the first frequency signal and the second frequency signal, wherein the difference between the frequency of the first frequency signal and the frequency of the second frequency signal is less than the preset frequency, that is, the frequency of the first frequency signal and the frequency of the second frequency signal are similar.

[0065] Figure 2 (a) shows the current distribution on the first and second curved radiators 100 and 200 when the circularly polarized antenna receives a first frequency signal in the first mode, when the equivalent length of the first curved radiator 100 is the same as the equivalent length of the second curved radiator 200. The current flowing in the first and second curved radiators 100 and 200 is the sum of the current flowing in the left-right horizontal direction. Figure 2 (b) shows the current distribution on the first and second curved radiators 100 and 200 when the circularly polarized antenna receives a second frequency signal in the second mode. The current flowing in the first and second curved radiators 200 is the sum of the current flowing in the left-right vertical direction.

[0066] It can be seen from this that there is a target frequency signal with a frequency between the first frequency and the second frequency. When the circularly polarized antenna receives the target frequency signal in the first mode, the current synthesized by the first arc radiator 100 and the second arc radiator 200 is perpendicular to each other and has a phase difference of 90 degrees when the circularly polarized antenna receives the target frequency signal in the second mode. Therefore, the first arc radiator 100 and the second arc radiator 200 form a circularly polarized antenna, which can receive the first circularly polarized signal of the target frequency.

[0067] For example, when the first mode of the circularly polarized antenna receives a 2.2 GHz signal, the current synthesized by the first arc radiator 100 and the second arc radiator 200 is close to being perpendicular to each other and having a phase difference of 90 degrees when the second mode of the circularly polarized antenna receives a 2.4 GHz signal, a signal with a frequency between 2.2 GHz and 2.4 GHz (for example, a signal with a frequency of 2.32 GHz) can be determined, so that the current synthesized by the first arc radiator 100 and the second arc radiator 200 when the first mode of the circularly polarized antenna receives a 2.32 GHz signal and the current synthesized by the first arc radiator 100 and the second arc radiator 200 when the second mode of the circularly polarized antenna receives a 2.32 GHz signal are close to being perpendicular to each other and having a phase difference of 90 degrees. Thus, the first arc radiator 100 and the second arc radiator 200 form a circularly polarized antenna that can receive a circularly polarized signal with a frequency of 2.32 GHz.

[0068] It should be noted that in the current distribution diagrams shown in this application, the density of the arrows represents the magnitude of the current. The denser the arrows, the greater the current; the sparser the arrows, the smaller the current. The direction of the arrows represents the direction of the current.

[0069] In some embodiments, the arc length between the first end B of the first arc radiator 100 and the second end C of the second arc radiator 200 is less than the arc length between the second end A of the first arc radiator 100 and the first end D of the second arc radiator 200, and the arc angle of the arc between the first end B of the first arc radiator 100 and the second end C of the second arc radiator 200 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0070] Specifically, the arc length between the first end B of the first curved radiator 100 and the second end C of the second curved radiator 200 is less than the arc length between the second end A of the first curved radiator 100 and the first end D of the second curved radiator 200. The angle of the arc between the first end B of the first curved radiator 100 and the second end C of the second curved radiator 200 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees. That is, the line connecting the first end B of the first curved radiator 100 and the center of the circumference is the first line, and the line connecting the second end C of the second curved radiator 200 and the center of the circumference is the second line. The angle between the first line and the second line is greater than or equal to 10 degrees and less than or equal to 30 degrees. In addition, the angle between the first line and the second line can also be set to be greater than or equal to 10 degrees and less than or equal to 20 degrees, or greater than or equal to 15 degrees and less than or equal to 20 degrees. By rationally designing the angle between the first and second connecting lines, the first curved radiator 100 is brought close to the second curved radiator 200. When the feeding point 300 is set on the first curved radiator 100 and the first grounding point 400 is set on the second curved radiator 200, the first curved radiator 100 can excite the second curved radiator 200 to receive the first circularly polarized signal and generate a resonant current based on the first circularly polarized signal. When the feeding point 300 is set on the second curved radiator 200 and the first grounding point 400 is set on the first curved radiator 100, the second curved radiator 200 can excite the first curved radiator 100 to receive the first circularly polarized signal and generate a resonant current based on the first circularly polarized signal.

[0071] At the same time, placing the first arc radiator 100 close to the second arc radiator 200 can also ensure that the current synthesized by the first arc radiator 100 and the second arc radiator 200 when the first mode receives the first circularly polarized signal is perpendicular to the current synthesized by the first arc radiator 100 and the second arc radiator 200 when the second mode receives the first circularly polarized signal, so that the first arc radiator 100 and the second arc radiator 200 constitute a circularly polarized antenna that can receive the first circularly polarized signal.

[0072] In some embodiments, as shown in FIG3 , the equivalent length of the first curved radiator 100 is the same as the equivalent length of the second curved radiator 200. The feed point 300 is provided at the first end of the first curved radiator 100, and the first ground point 400 is provided at the first end of the second curved radiator 200 (as shown in FIG3 (a)). Alternatively, the feed point 300 is provided at the second end of the first curved radiator 100, and the first ground point 400 is provided at the second end of the second curved radiator 200 (as shown in FIG3 (b)). Alternatively, the first ground point 400 is provided at the first end of the first curved radiator 100, and the feed point 300 is provided at the first end of the second curved radiator 200 (as shown in FIG3 (c)). Alternatively, the first ground point 400 is provided at the second end of the first curved radiator 100, and the feed point 300 is provided at the second end of the second curved radiator 200 (as shown in FIG3 (d)).

[0073] Specifically, when the feeding point 300 is set at the first end of the first arc radiator 100 and the first grounding point 400 is set at the first end of the second arc radiator 200 (as shown in (a) in Figure 3), the first arc radiator 100 and the second arc radiator 200 can form a left-handed circularly polarized antenna. At this time, the first arc radiator 100 and the second arc radiator 200 can receive left-handed circularly polarized signals.

[0074] When the feeding point 300 is set at the second end of the first arc radiator 100 and the first grounding point 400 is set at the second end of the second arc radiator 200 (as shown in (b) of Figure 3), the first arc radiator 100 and the second arc radiator 200 can form a left-handed circularly polarized antenna. At this time, the first arc radiator 100 and the second arc radiator 200 can receive left-handed circularly polarized signals.

[0075] When the first grounding point 400 is set at the first end of the first arc radiator 100 and the feeding point 300 is set at the first end of the second arc radiator 200 (as shown in (c) of Figure 3), the first arc radiator 100 and the second arc radiator 200 can form a right-handed circularly polarized antenna. At this time, the first arc radiator 100 and the second arc radiator 200 can receive right-handed circularly polarized signals.

[0076] When the first grounding point 400 is set at the second end of the first arc radiator 100 and the feeding point 300 is set at the second end of the second arc radiator 200 (as shown in (d) in Figure 3), the first arc radiator 100 and the second arc radiator 200 can form a right-handed circularly polarized antenna. At this time, the first arc radiator 100 and the second arc radiator 200 can receive right-handed circularly polarized signals.

[0077] It should be noted that the first end of the first curved radiator 100 includes the first end B of the first curved radiator 100 and the area near the first end B, and the second end of the first curved radiator 100 includes the second end A of the first curved radiator 100 and the area near the second end A. The first end of the second curved radiator 200 includes the first end D of the second curved radiator 200 and the area near the first end D, and the second end of the second curved radiator 200 includes the second end C of the second curved radiator 200 and the area near the second end C.

[0078] In some embodiments, as shown in Figure 4, the circularly polarized antenna also includes a third arc radiator 500, the third arc radiator 500, the first arc radiator 100 and the second arc radiator 200 are arranged at intervals, the third arc radiator 500, the first arc radiator 100 and the second arc radiator 200 are located on the same circumference, and a second grounding point 600 is provided on the third arc radiator 500.

[0079] Specifically, when the third curved radiator 500 is positioned close to the first curved radiator 100 (as shown in FIG4(b)), the third curved radiator 500 and the first curved radiator 100 can receive the second circularly polarized signal. The principle of this is the same as the principle of the first curved radiator 100 and the second curved radiator 200 receiving the first circularly polarized signal, and will not be repeated here. When the third curved radiator 500 is positioned close to the second curved radiator 200 (as shown in FIG4(a)), the third curved radiator 500 and the second curved radiator 200 can receive the second circularly polarized signal. The principle of this is the same as the principle of the first curved radiator 100 and the second curved radiator 200 receiving the first circularly polarized signal, and will not be repeated here.

[0080] In existing wearable electronic devices, a complete circular ring antenna can only receive circularly polarized signals of one frequency. However, the three arc-shaped radiators designed in this application (the first arc-shaped radiator 100, the second arc-shaped radiator 200, and the third arc-shaped radiator 500) can receive circularly polarized signals of two frequencies, thereby increasing the number of received circularly polarized signals, thereby allowing wearable electronic devices to be positioned based on circularly polarized signals of different frequencies. When a circularly polarized signal of one frequency cannot be used, the wearable electronic device can use another circularly polarized signal for positioning, thereby improving the stability of the positioning function of the wearable electronic device.

[0081] At the same time, the three arc radiators (the first arc radiator 100, the second arc radiator 200 and the third arc radiator 500) are arranged at intervals from each other, which increases the design flexibility of the three arc radiators in wearable electronic devices and reduces the difficulty of designing and installing circularly polarized antennas.

[0082] In some embodiments, the arc length between the second end A of the first curved radiator 100 and the first end F of the third curved radiator 500 is smaller than the arc length between the first end B of the first curved radiator 100 and the second end E of the third curved radiator 500 (as shown in (b) of Figure 4), and the arc angle of the arc between the second end of the first curved radiator 100 and the first end of the third curved radiator 500 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0083] Specifically, the arc length between the second end A of the first curved radiator 100 and the first end F of the third curved radiator 500 is less than the arc length between the first end B of the first curved radiator 100 and the second end E of the third curved radiator 500. The angle of the arc between the second end of the first curved radiator 100 and the first end of the third curved radiator 500 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees. That is, the line connecting the second end A of the first curved radiator 100 and the center of the circumference is the third line, and the line connecting the first end F of the third curved radiator 500 and the center of the circumference is the fourth line. The angle between the third and fourth lines is greater than or equal to 10 degrees and less than or equal to 30 degrees. Alternatively, the angle between the third and fourth lines can be set to be greater than or equal to 10 degrees and less than or equal to 20 degrees, or greater than or equal to 15 degrees and less than or equal to 20 degrees. By properly designing the angle between the third and fourth connecting lines, the third curved radiator 500 is positioned close to the first curved radiator 100. When the feeding point 300 is provided on the first curved radiator 100, the first grounding point 400 is provided on the second curved radiator 200, and the second grounding point 600 is provided on the third curved radiator 500, when receiving a second circularly polarized signal, the first curved radiator 100 can excite a resonant current in the third curved radiator 500, thereby enabling the first and third curved radiators 100, 500 to receive the second circularly polarized signal.

[0084] When the first grounding point 400 is set on the first arc radiator 100, the feeding point 300 is set on the second arc radiator 200, and the second grounding point 600 is set on the third arc radiator 500, when receiving the second circularly polarized signal, the second arc radiator 200 can excite the first arc radiator 100 to generate a resonant current, and the first arc radiator 100 excites the third arc radiator 500 to generate a resonant current, thereby enabling the first arc radiator 100 and the third arc radiator 500 to receive the second circularly polarized signal.

[0085] In some embodiments, as shown in FIG5 , the first grounding point 400 is provided at the first end portion of the first arc radiator 100, the feeding point 300 is provided at the first end portion of the second arc radiator 200, and the second grounding point 600 is provided at the first end portion of the third arc radiator 500 (as shown in FIG5 (a)); or, the feeding point 300 is provided at the first end portion of the first arc radiator 100, the first grounding point 400 is provided at the first end portion of the second arc radiator 200, and the second grounding point 600 is provided at the first end portion of the third arc radiator 500 (as shown in FIG5 (b)).

[0086] Specifically, as shown in Figure 5(a), the first grounding point 400 is set at the first end of the first curved radiator 100, the feeding point 300 is set at the first end of the second curved radiator 200, and the second grounding point 600 is set at the first end of the third curved radiator 500. The first curved radiator 100 and the second curved radiator 200 form a right-hand circularly polarized antenna, which can receive right-hand circularly polarized signals (i.e., the first circularly polarized signal). The first curved radiator 100 and the third curved radiator 500 form a left-hand circularly polarized antenna, which can receive left-hand circularly polarized signals (i.e., the second circularly polarized signal).

[0087] As shown in Figure 5(b), the feed point 300 is set at the first end of the first curved radiator 100, the first ground point 400 is set at the first end of the second curved radiator 200, and the second ground point 600 is set at the first end of the third curved radiator 500. The first curved radiator 100 and the second curved radiator 200 form a left-hand circularly polarized antenna, which can receive left-hand circularly polarized signals (i.e., the first circularly polarized signal). The first curved radiator 100 and the third curved radiator 500 form a right-hand circularly polarized antenna, which can receive right-hand circularly polarized signals (i.e., the second circularly polarized signal).

[0088] It should be noted that the first end of the third arc radiator 500 includes the first end F of the third arc radiator 500 and the area near the first end F, and the second end of the third arc radiator 500 includes the second end E of the third arc radiator 500 and the area near the second end E.

[0089] In some embodiments, as shown in Figure 6, the arc length between the first end D of the second curved radiator 200 and the second end E of the third curved radiator 500 is less than the arc length between the second end C of the second curved radiator 200 and the first end F of the third curved radiator 500, and the arc angle of the arc between the first end on the second curved radiator 200 and the second end on the third curved radiator 500 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0090] Specifically, the arc length between the first end D of the second curved radiator 200 and the second end E of the third curved radiator 500 is less than the arc length between the second end C of the second curved radiator 200 and the first end F of the third curved radiator 500. The angle of the arc between the first end of the second curved radiator 200 and the second end of the third curved radiator 500 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees. That is, the line connecting the first end D of the second curved radiator 200 and the center of the circumference is the fifth line, and the line connecting the second end E of the third curved radiator 500 and the center of the circumference is the sixth line. The angle between the fifth and sixth lines is greater than or equal to 10 degrees and less than or equal to 30 degrees. Alternatively, the angle between the fifth and sixth lines can be set to be greater than or equal to 10 degrees and less than or equal to 20 degrees, or greater than or equal to 15 degrees and less than or equal to 20 degrees. By properly designing the angle between the fifth and sixth connecting lines, the third curved radiator 500 is positioned close to the second curved radiator 200. When the feeding point 300 is disposed on the second curved radiator 200, the first grounding point 400 is disposed on the first curved radiator 100, and the second grounding point 600 is disposed on the third curved radiator 500, when receiving a second circularly polarized signal, the second curved radiator 200 can excite a resonant current in the third curved radiator 500, thereby enabling the second curved radiator 200 and the third curved radiator 500 to receive the second circularly polarized signal.

[0091] When the first grounding point 400 is set on the second arc radiator 200, the feeding point 300 is set on the first arc radiator 100, and the second grounding point 600 is set on the third arc radiator 500, when receiving the second circularly polarized signal, the first arc radiator 100 can excite the second arc radiator 200 to generate a resonant current, and the second arc radiator 200 excites the third arc radiator 500 to generate a resonant current, thereby enabling the second arc radiator 200 and the third arc radiator 500 to receive the second circularly polarized signal.

[0092] In some embodiments, as shown in FIG6 , the feeding point 300 is provided at the first end portion of the first arc radiator 100, the first grounding point 400 is provided at the first end portion of the second arc radiator 200, and the second grounding point 600 is provided at the first end portion of the third arc radiator 500 (as shown in FIG6 (b)); or, the feeding point 300 is provided at the first end portion of the first arc radiator 100, the first grounding point 400 is provided at the first end portion of the second arc radiator 200, and the second grounding point 600 is provided at the second end portion of the third arc radiator 500 (as shown in FIG6 (a)).

[0093] Specifically, as shown in Figure 6(a), the feed point 300 is set at the first end of the first curved radiator 100, the first grounding point 400 is set at the first end of the second curved radiator 200, and the second grounding point 600 is set at the second end of the third curved radiator 500. The first curved radiator 100 and the second curved radiator 200 form a left-hand circularly polarized antenna, which can receive left-hand circularly polarized signals (i.e., the first circularly polarized signal). The second curved radiator 200 and the third curved radiator 500 form a right-hand circularly polarized antenna, which can receive right-hand circularly polarized signals (i.e., the second circularly polarized signal).

[0094] As shown in Figure 6(b), the feed point 300 is set at the first end of the first curved radiator 100, the first ground point 400 is set at the first end of the second curved radiator 200, and the second ground point 600 is set at the second end of the third curved radiator 500. The first curved radiator 100 and the second curved radiator 200 form a left-hand circularly polarized antenna, which can receive left-hand circularly polarized signals (i.e., the first circularly polarized signal). The second curved radiator 200 and the third curved radiator 500 form a right-hand circularly polarized antenna, which can receive right-hand circularly polarized signals (i.e., the second circularly polarized signal).

[0095] Designers can design the equivalent length of the first arc radiator 100 and the equivalent length of the second arc radiator 200 according to actual needs, so that the equivalent length of the first arc radiator 100 and the equivalent length of the second arc radiator 200 are different, so that the circularly polarized antenna receives the third frequency signal and the fourth frequency signal, wherein the difference between the frequency of the third frequency signal and the frequency of the fourth frequency signal is less than the preset frequency, that is, the frequency of the third frequency signal and the frequency of the fourth frequency signal are similar.

[0096] When the equivalent length of the first curved radiator 100 is greater than the equivalent length of the second curved radiator 200, and the circularly polarized antenna receives a third frequency signal in the first mode, the resonant currents generated in the first and second curved radiators 100 and 200 are shown in FIG7(a). The current in the first curved radiator 100 is greater than the current in the second curved radiator 200, and the combined current of the first and second curved radiators 100 and 200 includes a stronger current flowing in the horizontal direction and a weaker current flowing in the vertical direction. When the circularly polarized antenna receives a fourth frequency signal in the second mode, the resonant currents generated in the first and second curved radiators 100 and 200 are shown in FIG7(b). The current in the first curved radiator 100 is less than the current in the second curved radiator 200, and the combined current of the first and second curved radiators 100 and 200 includes a stronger current flowing in the vertical direction and a weaker current flowing in the horizontal direction.

[0097] It can be seen from this that there is a target frequency signal with a frequency between the third frequency and the fourth frequency. When the circularly polarized antenna receives the target frequency signal in the first mode, the current synthesized by the first arc radiator 100 and the second arc radiator 200 is perpendicular to the current synthesized by the first arc radiator 100 and the second arc radiator 200 when the circularly polarized antenna receives the target frequency signal in the second mode, and the phase difference is 90 degrees. Therefore, the first arc radiator 100 and the second arc radiator 200 form a circularly polarized antenna, which can receive the first circularly polarized signal of the target frequency.

[0098] For example, when the first mode of the circularly polarized antenna receives a 2.2 GHz signal, the current synthesized by the first arc radiator 100 and the second arc radiator 200 is close to being perpendicular to each other and having a phase difference of 90 degrees when the second mode of the circularly polarized antenna receives a 2.4 GHz signal, a signal with a frequency between 2.2 GHz and 2.4 GHz (for example, a signal with a frequency of 2.32 GHz) can be determined, so that the current synthesized by the first arc radiator 100 and the second arc radiator 200 when the first mode of the circularly polarized antenna receives a 2.32 GHz signal and the current synthesized by the first arc radiator 100 and the second arc radiator 200 when the second mode of the circularly polarized antenna receives a 2.32 GHz signal are close to being perpendicular to each other and having a phase difference of 90 degrees. Thus, the first arc radiator 100 and the second arc radiator 200 form a circularly polarized antenna that can receive a circularly polarized signal with a frequency of 2.32 GHz.

[0099] When the equivalent length of the first curved radiator 100 is smaller than the equivalent length of the second curved radiator 200, the current flowing through the first curved radiator 100 is smaller than the current flowing through the second curved radiator 200 when the first mode receives a third frequency signal. When the second circularly polarized antenna receives a fourth frequency signal in the second mode, the current flowing through the first curved radiator 100 is larger than the current flowing through the second curved radiator 200. The first curved radiator 100 and the second curved radiator 200 can receive the first circularly polarized signal. The specific principles behind this are described above and will not be elaborated upon here.

[0100] In some embodiments, as shown in FIG8 , the feeding point 300 is arranged at the first end of the first arc radiator 100, and the first grounding point 400 is arranged at the second end of the second arc radiator 200 (as shown in FIG8 (a)); or, the feeding point 300 is arranged at the second end of the first arc radiator 100, and the first grounding point 400 is arranged at the first end of the second arc radiator 200 (as shown in FIG8 (b)); or, the first grounding point 400 is arranged at the first end of the first arc radiator 100, and the feeding point 300 is arranged at the second end of the second arc radiator 200 (as shown in FIG8 (c)); or, the first grounding point 400 is arranged at the second end of the first arc radiator 100, and the feeding point 300 is arranged at the first end of the second arc radiator 200 (as shown in FIG8 (d)).

[0101] Specifically, as shown in FIG8( a ), a feed point 300 is disposed at the first end of the first curved radiator 100, and a first ground point 400 is disposed at the second end of the second curved radiator 200. The first curved radiator 100 and the second curved radiator 200 form a right-hand circularly polarized antenna that can receive right-hand circularly polarized signals (i.e., first circularly polarized signals).

[0102] As shown in Figure 8(b), the feed point 300 is provided at the second end of the first curved radiator 100, and the first grounding point 400 is provided at the first end of the second curved radiator 200. The first curved radiator 100 and the second curved radiator 200 form a right-hand circularly polarized antenna that can receive right-hand circularly polarized signals (i.e., first circularly polarized signals).

[0103] As shown in Figure 8(c), the first grounding point 400 is provided at the first end of the first curved radiator 100, and the feeding point 300 is provided at the second end of the second curved radiator 200. The first curved radiator 100 and the second curved radiator 200 form a left-handed circularly polarized antenna that can receive left-handed circularly polarized signals (i.e., first circularly polarized signals).

[0104] As shown in FIG8( d ), the first grounding point 400 is provided at the second end of the first curved radiator 100, and the feeding point 300 is provided at the first end of the second curved radiator 200. The first curved radiator 100 and the second curved radiator 200 form a left-handed circularly polarized antenna, which can receive left-handed circularly polarized signals (i.e., first circularly polarized signals).

[0105] In some embodiments, the circularly polarized antenna also includes a third arc radiator 500, the third arc radiator 500, the first arc radiator 100 and the second arc radiator 200 are arranged at intervals, the third arc radiator 500, the first arc radiator 100 and the second arc radiator 200 are located on the same circle, a second grounding point 600 is provided on the third arc radiator 500, and the third arc radiator 500 and the first arc radiator 100 are used to receive a second circularly polarized signal.

[0106] Specifically, a third arc-shaped radiator 500 is provided so that the third arc-shaped radiator 500 and the first arc-shaped radiator 100 can receive the second circularly polarized signal, and the first arc-shaped radiator 100 and the second arc-shaped radiator 200 can receive the second circularly polarized signal. Existing wearable electronic devices that use a complete circular ring antenna can only receive circularly polarized signals of one frequency. However, the three arc-shaped radiators designed in this application (the first arc-shaped radiator 100, the second arc-shaped radiator 200, and the third arc-shaped radiator 500) can receive circularly polarized signals of two frequencies, increasing the number of received circularly polarized signals. This allows the wearable electronic device to be positioned based on circularly polarized signals of different frequencies. When a circularly polarized signal of one frequency cannot be used, the wearable electronic device can use another circularly polarized signal for positioning, thereby improving the stability of the positioning function of the wearable electronic device.

[0107] At the same time, the three arc radiators (the first arc radiator 100, the second arc radiator 200 and the third arc radiator 500) are arranged at intervals from each other, which increases the design flexibility of the three arc radiators in wearable electronic devices and reduces the difficulty of designing and installing circularly polarized antennas.

[0108] In some embodiments, the arc length between the second end A of the first curved radiator 100 and the first end F of the third curved radiator 500 is less than the arc length between the first end B of the first curved radiator 100 and the second end E of the third curved radiator 500, and the arc angle of the arc between the second end of the first curved radiator 100 and the first end of the third curved radiator 500 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0109] Specifically, the arc length between the second end A of the first curved radiator 100 and the first end F of the third curved radiator 500 is less than the arc length between the first end B of the first curved radiator 100 and the second end E of the third curved radiator 500. The angle of the arc between the second end of the first curved radiator 100 and the first end of the third curved radiator 500 on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees. That is, the line connecting the second end A of the first curved radiator 100 and the center of the circumference is the third line, and the line connecting the first end F of the third curved radiator 500 and the center of the circumference is the fourth line. The angle between the third and fourth lines is greater than or equal to 10 degrees and less than or equal to 30 degrees. Alternatively, the angle between the third and fourth lines can be set to be greater than or equal to 10 degrees and less than or equal to 20 degrees, or greater than or equal to 15 degrees and less than or equal to 20 degrees. By properly designing the angle between the third and fourth connecting lines, the third curved radiator 500 is positioned close to the first curved radiator 100. When the feeding point 300 is provided on the first curved radiator 100, the first grounding point 400 is provided on the second curved radiator 200, and the second grounding point 600 is provided on the third curved radiator 500, when receiving a second circularly polarized signal, the first curved radiator 100 can excite a resonant current in the third curved radiator 500, thereby enabling the first and third curved radiators 100, 500 to receive the second circularly polarized signal.

[0110] When the first grounding point 400 is set on the first arc radiator 100, the feeding point 300 is set on the second arc radiator 200, and the second grounding point 600 is set on the third arc radiator 500, when receiving the second circularly polarized signal, the second arc radiator 200 can excite the first arc radiator 100 to generate a resonant current, and the first arc radiator 100 excites the third arc radiator 500 to generate a resonant current, thereby enabling the first arc radiator 100 and the third arc radiator 500 to receive the second circularly polarized signal.

[0111] In some embodiments, as shown in FIG9 , the first grounding point 400 is set at the first end of the first arc radiator 100, the feeding point 300 is set at the second end of the second arc radiator 200, and the second grounding point 600 is set at the first end of the third arc radiator 500 (as shown in FIG9 (b)); or; the feeding point 300 is set at the first end of the first arc radiator 100, the first grounding point 400 is set at the second end of the second arc radiator 200, and the second grounding point 600 is set at the first end of the third arc radiator 500 (as shown in FIG9 (a)).

[0112] Specifically, as shown in Figure 9(a), the feed point 300 is located at the first end of the first curved radiator 100, the first grounding point 400 is located at the second end of the second curved radiator 200, and the second grounding point 600 is located at the first end of the third curved radiator 500. The first curved radiator 100 and the second curved radiator 200 form a right-hand circularly polarized antenna, which can receive right-hand circularly polarized signals (i.e., first circularly polarized signals). The second curved radiator 200 and the third curved radiator 500 form a right-hand circularly polarized antenna, which can receive right-hand circularly polarized signals (i.e., second circularly polarized signals).

[0113] As shown in Figure 9(b), the first grounding point 400 is located at the first end of the first curved radiator 100, the feeding point 300 is located at the second end of the second curved radiator 200, and the second grounding point 600 is located at the first end of the third curved radiator 500. The first curved radiator 100 and the second curved radiator 200 form a left-hand circularly polarized antenna, which can receive left-hand circularly polarized signals (i.e., the first circularly polarized signal). The second curved radiator 200 and the third curved radiator 500 form a right-hand circularly polarized antenna, which can receive right-hand circularly polarized signals (i.e., the second circularly polarized signal).

[0114] The present application also discloses a wearable electronic device, including a housing, a position determining element and the circularly polarized antenna described above. The housing includes a bottom wall and a side wall connected to the bottom wall. The circularly polarized antenna is arranged on the side wall, and the position determining element is coupled to the circularly polarized antenna.

[0115] Specifically, the circularly polarized antenna is used to receive a first circularly polarized signal and transmit the first circularly polarized signal to a position determination element, which is used to determine the current geographic location based on the first circularly polarized signal. Because the circularly polarized antenna used in the wearable electronic device of the embodiment of the present application utilizes two arc-shaped radiators (a first arc-shaped radiator and a second arc-shaped radiator) to form a circularly polarized antenna, there is no need to produce a complete circular ring radiator, which reduces the length of the antenna and is conducive to the miniaturization design of the circularly polarized antenna. At the same time, the two arc-shaped radiators can be flexibly designed in the wearable electronic device, reducing the design difficulty of the circularly polarized antenna. For the specific working principle, please refer to the above description of the circularly polarized antenna, which will not be repeated here.

[0116] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A circularly polarized antenna, characterized in that: The invention comprises a first arc radiator and a second arc radiator, wherein the first arc radiator and the second arc radiator are arranged at an interval, the first arc radiator and the second arc radiator are located on the same circumference, a first grounding point is arranged on any one of the first arc radiator and the second arc radiator, a feeding point is arranged on the other one of the first arc radiator and the second arc radiator, and the first arc radiator and the second arc radiator are used to receive a first circularly polarized signal.

2. The circularly polarized antenna according to claim 1, wherein The arc length between the first end of the first arc radiator and the second end of the second arc radiator is smaller than the arc length between the second end of the first arc radiator and the first end of the second arc radiator, and the arc angle of the arc between the first end on the first arc radiator and the second end on the second arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

3. The circularly polarized antenna according to claim 1 or 2, characterized in that: The equivalent length of the first arc radiator is the same as the equivalent length of the second arc radiator; The feeding point is arranged at a first end of the first arc-shaped radiator, and the first grounding point is arranged at a first end of the second arc-shaped radiator; or, The feeding point is arranged at the second end of the first arc-shaped radiator, and the first grounding point is arranged at the second end of the second arc-shaped radiator; or, The first grounding point is arranged at a first end of the first arc-shaped radiator, and the feeding point is arranged at a first end of the second arc-shaped radiator; or, The first grounding point is arranged at the second end of the first arc-shaped radiator, and the feeding point is arranged at the second end of the second arc-shaped radiator.

4. The circularly polarized antenna according to claim 3, characterized in that: The circularly polarized antenna further includes a third arc radiator, wherein the third arc radiator, the first arc radiator and the second arc radiator are arranged at intervals, the third arc radiator, the first arc radiator and the second arc radiator are located on the same circumference, and a second grounding point is arranged on the third arc radiator; The third arc-shaped radiator and the first arc-shaped radiator are used to receive a second circularly polarized signal, or the third arc-shaped radiator and the second arc-shaped radiator are used to receive a second circularly polarized signal.

5. The circularly polarized antenna according to claim 4, characterized in that: The arc length between the second end of the first arc radiator and the first end of the third arc radiator is smaller than the arc length between the first end of the first arc radiator and the second end of the third arc radiator, and the arc angle of the arc between the second end on the first arc radiator and the first end on the third arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

6. The circularly polarized antenna according to claim 5, characterized in that: The first grounding point is arranged at a first end of the first arc radiator, the feeding point is arranged at a first end of the second arc radiator, and the second grounding point is arranged at a first end of the third arc radiator; or, The feeding point is arranged at the first end of the first arc radiator, the first grounding point is arranged at the first end of the second arc radiator, and the second grounding point is arranged at the first end of the third arc radiator.

7. The circularly polarized antenna according to claim 4, characterized in that: The arc length between the first end of the second arc radiator and the second end of the third arc radiator is smaller than the arc length between the second end of the second arc radiator and the first end of the third arc radiator, and the arc angle of the arc between the first end on the second arc radiator and the second end on the third arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

8. The circularly polarized antenna according to claim 7, characterized in that: The feeding point is arranged at a first end of the first arc radiator, the first grounding point is arranged at a first end of the second arc radiator, and the second grounding point is arranged at a first end of the third arc radiator; or, The feeding point is arranged at the first end of the first arc radiator, the first grounding point is arranged at the first end of the second arc radiator, and the second grounding point is arranged at the second end of the third arc radiator.

9. The circularly polarized antenna according to claim 1 or 2, characterized in that: The equivalent length of the first arc radiator is different from the equivalent length of the second arc radiator; The feeding point is arranged at a first end of the first arc-shaped radiator, and the first grounding point is arranged at a second end of the second arc-shaped radiator; or, The feeding point is arranged at the second end of the first arc-shaped radiator, and the first grounding point is arranged at the first end of the second arc-shaped radiator; or, The first grounding point is arranged at a first end of the first arc-shaped radiator, and the feeding point is arranged at a second end of the second arc-shaped radiator; or, The first grounding point is arranged at the second end of the first arc radiator, and the feeding point is arranged at the first end of the second arc radiator.

10. The circularly polarized antenna according to claim 9, characterized in that: The circularly polarized antenna further includes a third arc radiator, wherein the third arc radiator, the first arc radiator and the second arc radiator are arranged at intervals, the third arc radiator, the first arc radiator and the second arc radiator are located on the same circumference, and a second grounding point is arranged on the third arc radiator; The third arc-shaped radiator and the first arc-shaped radiator are used to receive a second circularly polarized signal.

11. The circularly polarized antenna according to claim 10, characterized in that: The arc length between the second end of the first arc radiator and the first end of the third arc radiator is smaller than the arc length between the first end of the first arc radiator and the second end of the third arc radiator, and the arc angle of the arc between the second end on the first arc radiator and the first end on the third arc radiator on the circumference is greater than or equal to 10 degrees and less than or equal to 30 degrees.

12. The circularly polarized antenna according to claim 11, characterized in that: The first grounding point is arranged at a first end of the first arc radiator, the feeding point is arranged at a second end of the second arc radiator, and the second grounding point is arranged at a first end of the third arc radiator; or; The feeding point is arranged at the first end of the first arc radiator, the first grounding point is arranged at the second end of the second arc radiator, and the second grounding point is arranged at the first end of the third arc radiator.

13. A wearable electronic device, characterized in that: A device comprising a housing, a position determining element and the circularly polarized antenna according to any one of claims 1 to 12, wherein the housing comprises a bottom wall and a side wall connected to the bottom wall, the circularly polarized antenna is arranged on the side wall, and the position determining element is coupled to the circularly polarized antenna; The circularly polarized antenna is used to receive a first circularly polarized signal and transmit the first circularly polarized signal to the position determining element, and the position determining element is used to determine a current geographical location according to the first circularly polarized signal.

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