Circularly polarized antennas and electronic equipment

Abstract

This application provides a circularly polarized antenna and an electronic device. The circularly polarized antenna includes a ring radiator, a feeding assembly, and a second adjustment assembly. The ring radiator consists of multiple arc-shaped radiating segments, adjacent of which are connected by the first adjustment assembly. The first adjustment assembly adjusts the capacitance parameters between adjacent arc-shaped radiating segments. The feeding assembly is connected to a feeding point located at one end of an arc-shaped radiating segment. The ring radiator and the feeding assembly form a first-band antenna to receive signals at a first frequency. The second adjustment assembly is connected to a ground point on the ring radiator and adjusts the equivalent length of a second-band antenna to receive signals at a second frequency. The ground point is located on an arc-shaped radiating segment, and the second-band antenna includes an arc-shaped radiating segment between the feeding point and the ground point and the first adjustment assembly. The circularly polarized antenna of this application can solve the problem of limited radiation angle in traditional circularly polarized antennas.

Description

Technical Field

[0001] This application belongs to the field of antenna technology, and in particular relates to a circularly polarized antenna and electronic device. Background Technology

[0002] Currently, traditional circularly polarized antennas radiate signals with high directivity. Circularly polarized antennas can typically only cover a certain azimuth angle, resulting in a limitation on the radiation angle of circularly polarized antennas. Utility Model Content

[0003] The purpose of this application is to provide a circularly polarized antenna and electronic device that can solve the problem of limited radiation angle of traditional circularly polarized antennas.

[0004] In a first aspect, embodiments of this application provide a circularly polarized antenna, comprising:

[0005] A ring radiator is composed of multiple arc-shaped radiating segments, with adjacent arc-shaped radiating segments connected by a first adjustment component; wherein, the first adjustment component is used to adjust the capacitance parameters between adjacent arc-shaped radiating segments;

[0006] A feeding assembly is connected to a feeding point on the annular radiator; wherein the feeding point is located at one end of one of the arc-shaped radiating segments, and the annular radiator and the feeding assembly form a first frequency band antenna, which is used to receive signals at a first frequency.

[0007] The second adjustment component is connected to a grounding point on the annular radiator. The second adjustment component is used to adjust the equivalent length of the second frequency band antenna so that the second frequency band antenna receives a signal of the second frequency. The grounding point is located on an arc-shaped radiating segment, and the second frequency band antenna includes the arc-shaped radiating segment between the feed point and the grounding point and the first adjustment component.

[0008] In one possible implementation of the first aspect, the first regulating component includes a capacitor.

[0009] In one possible implementation of the first aspect, the second regulating component includes an inductor.

[0010] In one possible implementation of the first aspect, the line connecting the feed point and the center point of the annular radiator is a first line, the line connecting the ground point and the center point of the annular radiator is a second line, the counterclockwise circumferential direction of the annular radiator is a first direction, and along the first direction, the first line and the second line form a first included angle α.

[0011] Where α∈(0,2π).

[0012] In one possible implementation of the first aspect, the signal at the first frequency is a signal in the L1 band, and the signal at the second frequency is a signal in the L5 band.

[0013] In one possible implementation of the first aspect, the power supply assembly includes a power supply structure connected to one end of one of the arcuate radiating segments, and the power supply structure is perpendicular to the plane containing the annular radiator.

[0014] In one possible implementation of the first aspect, the dimensions of each of the arcuate radiating segments are equal, and the spacing between adjacent arcuate radiating segments is equal.

[0015] In one possible implementation of the first aspect, the number of the arc-shaped radiating segments is 3 to 20.

[0016] In one possible implementation of the first aspect, the number of the arc-shaped radiating segments is eight.

[0017] Secondly, embodiments of this application provide an electronic device including the circularly polarized antenna described in any one of the first aspects.

[0018] In one possible implementation of the second aspect, a motherboard is also included, wherein one end of the feed component in the circularly polarized antenna is connected to a feed point on the ring radiator, and the other end of the feed component is connected to a feed circuit on the motherboard.

[0019] In one possible implementation of the second aspect, the plane containing the annular radiator is parallel to the motherboard.

[0020] In one possible implementation of the second aspect, the projection of the annular radiator in the thickness direction of the motherboard falls within the motherboard.

[0021] The beneficial effects of the embodiments in this application compared with the prior art are:

[0022] The first adjustment component is used to adjust the capacitance parameters between adjacent arc-shaped radiating segments, ensuring a uniform current distribution across the arc-shaped radiating segments. When every two adjacent arc-shaped radiating segments are connected via the first adjustment component, multiple first adjustment components adjust the current across multiple arc-shaped radiating segments, resulting in a uniform current distribution across the entire ring radiator. Based on this, a feeding component is connected to one end of one of the arc-shaped radiating segments. The feeding component and the ring radiator together form a first-band antenna. Through the cooperation of the feeding component and the ring radiator, the first-band antenna becomes an omnidirectional circularly polarized antenna capable of receiving signals at a first frequency. This increases the coverage area of ​​the first-band antenna for receiving signals at the first frequency, solving the problem of limited radiation angle in traditional circularly polarized antennas.

[0023] A grounding point is set on the ring radiator, located on an arc-shaped radiating segment, and a second adjustment component is connected to the grounding point. The arc-shaped radiating segment between the feed point and the grounding point and the first adjustment component constitute a second frequency band antenna. The second adjustment component is used to adjust the equivalent length of the second frequency band antenna so that the equivalent length of the second frequency band antenna is a multiple of the wavelength of the signal at the second frequency (for example, the equivalent length of the second frequency band antenna is 1 / 2 of the wavelength of the signal at the second frequency), thereby enabling the second frequency band antenna to receive signals at the second frequency.

[0024] The circularly polarized antenna provided in this embodiment can simultaneously receive signals of a first frequency and signals of a second frequency. When receiving signals of the first frequency, the first frequency band antenna is an omnidirectional circularly polarized antenna, which increases the coverage area of ​​the first frequency band antenna for receiving signals of the first frequency and solves the problem of limited radiation angle in traditional circularly polarized antennas. Simultaneously, by setting a second adjustment component to adjust the equivalent length of the second frequency band antenna, the second frequency band antenna can receive signals of the second frequency. Therefore, the circularly polarized antenna provided in this embodiment can receive signals of two frequencies.

[0025] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a top view schematic diagram of a circularly polarized antenna provided in an embodiment of this application;

[0028] Figure 2This is a side view schematic diagram of a circularly polarized antenna provided in an embodiment of this application;

[0029] Figure 3 A current distribution diagram of a ring radiator receiving a signal of a first frequency, provided in an embodiment of this application.

[0030] In the diagram: 100, ring radiator; 110, arc-shaped radiating segment; 120, first adjustment component; 200, power supply component; 300, second adjustment component; 400, main board. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] like Figures 1 to 3As shown, the circularly polarized antenna includes a ring radiator 100, a feeding assembly 200, and a second adjustment assembly 300. The ring radiator 100 is composed of multiple arc-shaped radiating segments 110, with adjacent segments connected by a first adjustment assembly 120. The feeding assembly 200 is connected to a feeding point A on the ring radiator 100, located at one end of an arc-shaped radiating segment 110. The second adjustment assembly 300 is connected to a grounding point B on the ring radiator 100, located on an arc-shaped radiating segment 110.

[0036] Specifically, when using this circularly polarized antenna, one end of the feed assembly 200 is connected to feed point A on the ring radiator 100, and the other end of the feed assembly 200 is connected to the feed circuit on the main board 400. The second adjustment assembly 300 is connected to ground point B on the ring radiator 100, and the other end of the second adjustment assembly 300 is connected to ground on the main board 400. The first adjustment assembly 120 is used to adjust the capacitance parameters between adjacent arc-shaped radiating segments 110, so that the current on the arc-shaped radiating segments 110 is evenly distributed. When every two adjacent arc-shaped radiating segments 110 are connected through the first adjustment assembly 120, multiple first adjustment assemblies 120 adjust the current on multiple arc-shaped radiating segments 110, so that the current on the entire ring radiator 100 is evenly distributed (e.g., ...). Figure 3 (As shown). Based on this, the feed assembly 200 is connected to one end of one of the arc-shaped radiating segments 110. The feed assembly 200 and the ring radiator 100 form a first frequency band antenna. Through the cooperation of the feed assembly 200 and the ring radiator 100, the first frequency band antenna becomes an omnidirectional circularly polarized antenna capable of receiving signals of the first frequency. This increases the coverage area of ​​the first frequency band antenna for receiving signals of the first frequency and solves the problem of limited radiation angle of traditional circularly polarized antennas.

[0037] A grounding point B is set on the annular radiator 100, and the grounding point B is located on an arc-shaped radiating segment 110. The second adjustment component 300 is connected to the grounding point B. The arc-shaped radiating segment 110 between the feed point A and the grounding point B and the first adjustment component 120 form a second frequency band antenna. The second adjustment component 300 is used to adjust the equivalent length of the second frequency band antenna so that the equivalent length of the second frequency band antenna is a multiple of the wavelength of the signal at the second frequency (for example, the equivalent length of the second frequency band antenna is 1 / 2 of the wavelength of the signal at the second frequency), thereby enabling the second frequency band antenna to receive signals at the second frequency.

[0038] The circularly polarized antenna provided in this embodiment can simultaneously receive signals of a first frequency and signals of a second frequency. When receiving signals of the first frequency, the first frequency band antenna is an omnidirectional circularly polarized antenna, which increases the coverage area of ​​the first frequency band antenna for receiving signals of the first frequency and solves the problem of limited radiation angle in traditional circularly polarized antennas. Simultaneously, by setting a second adjustment component 300 to adjust the equivalent length of the second frequency band antenna, the second frequency band antenna can receive signals of the second frequency. Therefore, the circularly polarized antenna provided in this embodiment can receive signals of two frequencies.

[0039] It should be noted that, if viewed from the annular radiator 100 along the thickness direction of the main board 400, each arc-shaped radiating segment 110 extends in a counterclockwise direction. When the feed assembly 200 is connected to the starting end of the arc-shaped radiating segment 110, the first frequency band antenna is a right-hand circularly polarized antenna; when the feed assembly 200 is connected to the ending end of the arc-shaped radiating segment 110, the first frequency band antenna is a left-hand circularly polarized antenna.

[0040] In some embodiments, the signal at the first frequency is a signal in the L1 band, and the signal at the second frequency is a signal in the L5 band. That is, the first frequency band antenna is used to receive the signal in the L1 band, and the second frequency band antenna is used to receive the signal in the L5 band. Alternatively, by configuring the first adjustment component 120 and the second adjustment component 300, the first frequency band antenna can be used to receive the signal in the L5 band, and the second frequency band antenna can be used to receive the signal in the L1 band.

[0041] In some embodiments, the first adjustment component 120 includes a capacitor and the second adjustment component 300 includes an inductor.

[0042] Specifically, each arc-shaped radiating segment 110 in the ring radiator 100 can be equivalent to an inductor. A capacitor is connected in series between any two adjacent arc-shaped radiating segments 110 in the ring radiator 100. The entire ring radiator 100 can be considered a series resonant circuit. By adjusting the capacitance parameters of the capacitors, the operating frequency band of the ring radiator 100 can be configured so that the ring radiator 100 can receive signals of the first frequency. Simultaneously, by adjusting the capacitance parameters of multiple capacitors, the current in the entire ring radiator 100 is uniformly distributed. Based on this, a feed assembly 200 is connected to one end of one of the arc-shaped radiating segments 110. The feed assembly 200 and the ring radiator 100 form a first-band antenna. Through the cooperation of the feed assembly 200 and the ring radiator 100, the first-band antenna becomes an omnidirectional circularly polarized antenna capable of receiving signals of the first frequency. This increases the coverage area of ​​the first-band antenna receiving signals of the first frequency and solves the problem of limited radiation angle in traditional circularly polarized antennas.

[0043] Simultaneously, a grounding point B is provided on the annular radiator 100, located on an arc-shaped radiating segment 110, and an inductor is connected to grounding point B. The arc-shaped radiating segment 110 between the feed point A and the grounding point B, and the first adjustment component 120, constitute a second frequency band antenna. The inductor is used to adjust the equivalent length of the second frequency band antenna so that the equivalent length of the second frequency band antenna is a multiple of the wavelength of the second frequency signal (for example, the equivalent length of the second frequency band antenna is 1 / 2 of the wavelength of the second frequency signal), thereby enabling the second frequency band antenna to receive the second frequency signal.

[0044] Therefore, the circularly polarized antenna provided in this application embodiment can receive signals of a first frequency and signals of a second frequency.

[0045] To enable a circularly polarized antenna to receive signals at two frequencies, designers typically connect a frequency modulation (FM) circuit in series between two adjacent arc-shaped radiating sections 110. This FM circuit includes two parallel branches: a first branch and a second branch. The first branch includes a first capacitor; the second branch includes a second capacitor, a third capacitor, and a first inductor. The third capacitor and the first inductor are connected in parallel to form a resonant circuit, and the third capacitor and the first inductor are connected in parallel and then in series with the second capacitor. When the frequency of the signal in the ring radiator 100 is within the specific frequency band corresponding to the resonant circuit, the resonant circuit is considered an open circuit. For the signal in the ring radiator 100, the FM circuit only includes the first capacitor. In this case, the operating frequency band of the circularly polarized antenna can be adjusted by configuring the first capacitor, allowing the circularly polarized antenna to receive signals at the first frequency. When the frequency of the signal in the ring radiator 100 is not within the specific frequency band corresponding to the resonant circuit, the operating frequency band of the circularly polarized antenna can be adjusted by configuring the parameters of the first capacitor, the second capacitor, the third capacitor, and the first inductor, allowing the circularly polarized antenna to receive signals at the second frequency. This enables the circularly polarized antenna to receive signals at multiple frequencies. However, the circularly polarized antenna uses a large number of electronic components (capacitors and inductors), and the losses of these components are relatively high, resulting in low efficiency.

[0046] The circularly polarized antenna provided in this application embodiment connects a capacitor in series between adjacent arc-shaped radiating sections 110, so that the annular radiator 100 and the feed assembly 200 form a first-band antenna to receive signals of a first frequency. Simultaneously, by setting a ground point B on the annular radiator 100, the arc-shaped radiating section 110 between the feed point A and the ground point B, and the capacitor, form a second-band antenna. An inductor connected to the ground point B is used to adjust the equivalent length of the second-band antenna, enabling it to receive signals of a second frequency. Thus, the circularly polarized antenna can receive signals of multiple frequencies.

[0047] Therefore, compared with existing circularly polarized antennas, the circularly polarized antenna provided in this application embodiment reduces the number of electronic components (capacitors and inductors), thereby reducing losses caused by electronic components and improving the efficiency of the circularly polarized antenna.

[0048] In some embodiments, the line connecting the feed point A and the center point of the ring radiator 100 is the first line, the line connecting the ground point B and the center point of the ring radiator 100 is the second line, the counterclockwise circumferential direction of the ring radiator 100 is the first direction, and along the first direction, the first line and the second line form a first angle α, where α∈(0, 2π).

[0049] Specifically, a grounding point B and a feed point A are set on the ring radiator 100. The line connecting the feed point A and the center point of the ring radiator 100 is the first connecting line, and the line connecting the grounding point B and the center point of the ring radiator 100 is the second connecting line. The counterclockwise rotation direction of the ring radiator 100 is the first direction, and a first angle α is formed along the first connecting line to the second connecting line in the first direction, where α∈(0, 2π). That is, the feed point A is located at one end of an arc-shaped radiating segment 110 in the ring radiator 100. The position of the grounding point B does not coincide with that of the feed point. The grounding point B and the feed point A can be located on the same arc-shaped radiating segment 110 or on different arc-shaped radiating segments 110. After the positions of the feed point A and the grounding point B are determined, the feed point A and the grounding point B divide the entire ring radiator 100 into two parts, with the longer part of the arc-shaped radiating segment 110 serving as the second frequency band antenna. If the first included angle α is greater than π, then all the arc-shaped radiating segments 110 and the first adjustment component 120 within the first included angle α constitute the second frequency band antenna; if the first included angle α is less than or equal to π, then all the arc-shaped radiating segments 110 outside the first included angle α and the first adjustment component 120 constitute the second frequency band antenna. The equivalent length of the second frequency band antenna is adjusted by the second adjustment component 300 connected to the grounding point B, so that the equivalent length of the second frequency band antenna is a multiple of the wavelength of the signal at the second frequency (for example, the equivalent length of the second frequency band antenna is 1 / 2 of the wavelength of the signal at the second frequency), thereby enabling the second frequency band antenna to receive signals at the second frequency.

[0050] It should be noted that designers can set the positions of feed point A and grounding point B according to the actual situation, and there is no limitation on the positions of feed point A and grounding point B here.

[0051] In some embodiments, the power supply assembly 200 includes a power supply structure connected to one end of one of the arcuate radiating segments 110, and the power supply structure is perpendicular to the plane in which the annular radiator 100 is located.

[0052] Specifically, one end of the feed structure is connected to one end of an arc-shaped radiating section 110, and the other end of the feed structure is connected to the feed circuit on the motherboard 400. The feed structure is equivalent to a dipole antenna, and is perpendicular to the plane containing the ring radiator 100. The phase difference between the resonant current on the ring radiator 100 and the resonant current on the feed structure is 90°. The first frequency band antenna formed by the ring radiator 100 and the feed structure is a circularly polarized antenna. This first frequency band antenna, formed by the ring radiator 100 and the feed structure, is an omnidirectional circularly polarized antenna, thereby increasing the signal coverage area of ​​the first frequency band antenna and solving the problem of limited radiation angle in traditional circularly polarized antennas.

[0053] For example, the power supply structure can be a metal column in the shape of a cylinder.

[0054] In some embodiments, the dimensions of each arc-shaped radiating segment 110 are equal, and the spacing between adjacent arc-shaped radiating segments 110 is equal. The dimensions of the arc-shaped radiating segment 110 include parameters such as arc length and cross-sectional area.

[0055] Specifically, when the dimensions of each arc-shaped radiating segment 110 are equal, the equivalent inductance of each arc-shaped radiating segment 110 is also the same, so that the capacitance parameters of the first adjustment component 120 can be determined based on the equivalent inductance of the arc-shaped radiating segment 110, thereby reducing design and manufacturing costs.

[0056] It should be noted that the dimensions of each arc-shaped radiating segment 110 can be different, and the spacing between adjacent arc-shaped radiating segments 110 can also be unequal, in order to meet the design requirements of the actual product's specific structure for the circularly polarized antenna.

[0057] In some embodiments, the number of arc-shaped radiating segments 110 is 3 to 20.

[0058] In some embodiments, the number of arc-shaped radiating segments 110 is 16.

[0059] In some embodiments, the number of arc-shaped radiating segments 110 is eight.

[0060] It should be noted that designers can design the number of arc-shaped radiating segments 110 in the annular radiator 100 according to actual conditions (e.g., production costs, design difficulty, installation difficulty), and the specific number of arc-shaped radiating segments 110 in the annular radiator 100 is not limited here.

[0061] An embodiment of this application also provides an electronic device, including a circularly polarized antenna as described in any of the above embodiments.

[0062] Specifically, the electronic device can be a mobile phone, tablet, computer, or wearable smart device, etc. Since the electronic device includes the circularly polarized antenna described above, it can simultaneously receive signals of a first frequency and signals of a second frequency. When receiving the first frequency signal, the first frequency band antenna is an omnidirectional circularly polarized antenna, increasing the coverage area for receiving the first frequency signal and solving the problem of limited radiation angle in traditional circularly polarized antennas. Simultaneously, by setting the second adjustment component 300 to adjust the equivalent length of the second frequency band antenna, the second frequency band antenna can receive signals of a second frequency. Therefore, the circularly polarized antenna provided in this embodiment can receive signals of two frequencies. For the specific principle, please refer to the above description of the circularly polarized antenna; it will not be repeated here.

[0063] In some embodiments, such as Figure 1 , Figure 2 As shown, the electronic device also includes a motherboard 400. One end of the feed component 200 in the circularly polarized antenna is connected to the feed point A on the ring radiator 100, and the other end of the feed component 200 is connected to the feed circuit on the motherboard 400.

[0064] Specifically, the motherboard 400 can be a printed circuit board (PCB).

[0065] The feed circuit can be composed of microstrip lines, for example, it can include a power divider composed of microstrip lines. The feed circuit can process the radio frequency signal transmitted to the circularly polarized antenna, for example, it can adjust the phase, frequency and other parameters of the radio frequency signal.

[0066] In some embodiments, such as Figure 1 , Figure 2 As shown, the plane containing the annular radiator 100 is parallel to the motherboard 400.

[0067] In some embodiments, such as Figure 1 , Figure 2 As shown, the projection of the annular radiator 100 onto the motherboard 400 in the thickness direction falls within the motherboard 400. That is, the projections of the annular radiator 100 onto the motherboard 400 in the thickness direction are all within the motherboard 400.

[0068] In some embodiments, such as Figure 1 , Figure 2 As shown, motherboard 400 is a circular motherboard 400.

[0069] Specifically, the outer edge of the projection of the annular radiator 100 onto the motherboard 400 in the thickness direction can coincide with the edge of the motherboard 400.

[0070] In some embodiments, the circularly polarized antenna further includes a dielectric layer disposed between the annular radiator 100 and the main board 400, for fixing and supporting the annular radiator 100, and for isolating the annular radiator 100 and the main board 400.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A circularly polarized antenna, characterized in that, include: A ring radiator is composed of multiple arc-shaped radiating segments, with adjacent arc-shaped radiating segments connected by a first adjustment component; wherein, the first adjustment component is used to adjust the capacitance parameters between adjacent arc-shaped radiating segments; A feeding assembly is connected to a feeding point on the annular radiator; wherein the feeding point is located at one end of one of the arc-shaped radiating segments, and the annular radiator and the feeding assembly form a first frequency band antenna, which is used to receive signals at a first frequency. The second adjustment component is connected to a grounding point on the annular radiator. The second adjustment component is used to adjust the equivalent length of the second frequency band antenna so that the second frequency band antenna receives a signal of the second frequency. The grounding point is located on an arc-shaped radiating segment, and the second frequency band antenna includes the arc-shaped radiating segment between the feed point and the grounding point and the first adjustment component.

2. The circularly polarized antenna of claim 1, wherein, The first regulating component includes a capacitor.

3. The circularly polarized antenna of claim 1, wherein, The second regulating component includes an inductor.

4. The circularly polarized antenna as described in claim 1, characterized in that, The line connecting the feed point and the center point of the annular radiator is the first line, the line connecting the ground point and the center point of the annular radiator is the second line, the counterclockwise circumferential direction of the annular radiator is the first direction, and along the first direction, the first line and the second line form a first angle α. Where α∈(0,2π).

5. The circularly polarized antenna of claim 1, wherein, The first frequency signal is a signal in the L1 band, and the second frequency signal is a signal in the L5 band.

6. The circularly polarized antenna of claim 1, wherein, The power feeding assembly includes a power feeding structure connected to one end of one of the arc-shaped radiating segments, and the power feeding structure is perpendicular to the plane where the annular radiator is located.

7. The circularly polarized antenna of claim 1, wherein, All of the arc-shaped radiating segments are of equal size, and the spacing between adjacent arc-shaped radiating segments is equal.

8. The circularly polarized antenna of any one of claims 1-7, wherein, The number of the arc-shaped radiating segments is between 3 and 20.

9. The circularly polarized antenna of claim 8, wherein, The number of arc-shaped radiating segments is 8.

10. An electronic device, comprising: Including the circularly polarized antenna as described in any one of claims 1 to 9.

11. The electronic device of claim 10, wherein, It also includes a motherboard, one end of the feed component in the circularly polarized antenna is connected to the feed point on the ring radiator, and the other end of the feed component is connected to the feed circuit on the motherboard.

12. The electronic device of claim 11, wherein, The plane containing the annular radiator is parallel to the motherboard.

13. The electronic device of claim 11, wherein, The projection of the annular radiator in the thickness direction of the motherboard falls within the motherboard.

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