Antenna structure and electronic device

Abstract

Provided in the embodiments of the present application are an antenna structure and an electronic device. The antenna structure comprises: a first dual-loop antenna unit and a second dual-loop antenna unit, wherein the first dual-loop antenna unit comprises a first antenna and a second antenna, and the second antenna surrounds the first antenna; the second dual-loop antenna unit comprises a third antenna and a fourth antenna, and the fourth antenna surrounds the third antenna; the surface of the first dual-loop antenna unit is not in contact with the surface of the second dual-loop antenna unit; the first dual-loop antenna unit is electrically connected to the second dual-loop antenna unit; and the antenna structure is electrically connected to an electronic device configured to be provided with the antenna structure. By using the dual-loop antenna units, dual-frequency right-handed circular polarization of the antennas is realized, the coverage range of a signal is enhanced, and the signal reception capability is optimized at different frequencies, thereby achieving the effects of improving the stability of a device and improving the anti-interference capability.

Description

Antenna structure and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202411387044.4, filed on September 30, 2024, entitled “Antenna structure and electronic device”, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of antennas, in particular to an antenna structure and an electronic device. BACKGROUND

[0003] In an electronic device, a Global Positioning System (GPS) antenna needs to be deployed, and then the electronic device receives a GPS signal based on the GPS antenna. For example, the electronic device is a wearable device.

[0004] In the prior art, a metal frame of an electronic device is used as a GPS antenna.

[0005] However, in the above-mentioned manner, the metal frame of the electronic device is also used as an antenna for LTE communication or WiFi communication, and then other signals will interfere with the GPS signal. SUMMARY

[0006] Embodiments of the present application provide an antenna structure and an electronic device, which are used to achieve the effects of implementing dual-frequency right-hand circular polarization of the antenna, enhancing the coverage range of the signal, optimizing the signal receiving capability at different frequencies, and increasing the stability and anti-interference of the device by using a double-ring antenna unit.

[0007] In a first aspect, embodiments of the present application provide an antenna structure, comprising:

[0008] The first double-ring antenna unit comprises a first antenna and a second antenna, and the second antenna surrounds the first antenna; the second double-ring antenna unit comprises a third antenna and a fourth antenna, and the fourth antenna surrounds the third antenna.

[0009] The surface of the first double-ring antenna unit is not in contact with the surface of the second double-ring antenna unit; the first double-ring antenna unit and the second double-ring antenna unit are electrically connected; and the antenna structure is electrically connected with an electronic device for arranging the antenna structure.

[0010] In a possible implementation, the first antenna and the third antenna are electrically connected, and the second antenna and the fourth antenna are electrically connected.

[0011] In a possible implementation, the first electric connection point of the first antenna is electrically connected with the first electric connection point of the third antenna, and the second electric connection point of the first antenna is electrically connected with the second electric connection point of the third antenna;

[0012] The first electric connection point of the second antenna is electrically connected with the first electric connection point of the fourth antenna, and the second electric connection point of the second antenna is electrically connected with the second electric connection point of the fourth antenna.

[0013] In a possible implementation, the first electric connection point of the first antenna is electrically connected with the first electric connection point of the third antenna through at least one conductor, and the second electric connection point of the first antenna is electrically connected with the second electric connection point of the third antenna through at least one conductor;

[0014] The first electric connection point of the second antenna is electrically connected with the first electric connection point of the fourth antenna through at least one conductor, and the second electric connection point of the second antenna is electrically connected with the second electric connection point of the fourth antenna through at least one conductor.

[0015] In a possible implementation, the conductor is a metal column.

[0016] In a possible implementation, the conductor is a wire; the first antenna and the third antenna are fixedly connected through at least one non-conductive body, and the second antenna and the fourth antenna are fixedly connected through at least one non-conductive body.

[0017] In a possible implementation, the first double-ring antenna unit and the second double-ring antenna unit are fixedly arranged in the electronic device.

[0018] In a possible implementation, at least one component is connected between the third antenna and the fourth antenna, and / or at least one feeding point is arranged between the third antenna and the fourth antenna.

[0019] In a possible implementation, the first antenna is a circular line / serpentine line; and / or the second antenna is a circular line / serpentine line; the third antenna is a circular line / serpentine line; and / or the fourth antenna is a circular line / serpentine line.

[0020] In a possible implementation, the diameter of the first antenna is smaller than the diameter of the second antenna; and the diameter of the third antenna is smaller than the diameter of the fourth antenna.

[0021] The frequency band corresponding to the first antenna and the third antenna is an L1 frequency band of a GPS satellite positioning system.

[0022] The frequency band corresponding to the second antenna and the fourth antenna is an L5 frequency band of a GPS satellite positioning system.

[0023] In a second aspect, the present application provides an electronic device comprising the antenna structure according to any one of the first aspect.

[0024] Further, the electronic device further comprises a connecting unit; the connecting unit is in a trapezoidal structure, a first contact surface of the connecting unit is electrically connected with a mainboard of the electronic device, and a second contact surface of the connecting unit is used for supporting the antenna structure; and the connecting unit is fixedly connected with the electronic device.

[0025] In a third aspect, the present application provides a wearable device comprising the antenna structure according to any one of the first aspect.

[0026] The antenna structure and the electronic device provided by the embodiments of the present application can optimize signal reception at different frequencies through the combination of the first antenna and the second antenna and the combination of the third antenna and the fourth antenna, thereby increasing the communication stability of the device. Since the surface of the first double-ring antenna unit is not in contact with the surface of the second double-ring antenna unit, this design can reduce the risk of performance reduction or damage caused by physical contact. By using the double-ring antenna unit, the double-frequency right-handed circular polarization of the antenna is realized, the coverage range of the signal is enhanced, the signal reception capability at different frequencies is optimized, and the effects of increasing the stability of the device and increasing the anti-interference performance are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0028] FIG. 1 is a structural schematic diagram of an antenna structure provided by an embodiment of the present application;

[0029] FIG. 2 is an exploded view I of an antenna structure provided by an embodiment of the present application;

[0030] FIG. 3 is a structural schematic diagram of a first double-ring antenna unit provided by an embodiment of the present application;

[0031] FIG. 4 is a structural schematic diagram of a second double-ring antenna unit provided by an embodiment of the present application;

[0032] FIG. 5 is a structural schematic diagram of an antenna structure provided by an embodiment of the present application;

[0033] FIG. 6 is a three-dimensional structural schematic diagram I of a connecting unit provided by an embodiment of the present application;

[0034] FIG. 7 is a three-dimensional structural schematic diagram II of a connecting unit provided by an embodiment of the present application;

[0035] FIG. 8 is a feeding point connection schematic diagram provided by an embodiment of the present application;

[0036] FIG. 9 is a serpentine line schematic diagram provided by an embodiment of the present application;

[0037] Fig. 10 is an L1 band current diagram provided by the embodiment of the present application;

[0038] Fig. 11 is an L5 band current diagram provided by the embodiment of the present application;

[0039] Fig. 12 is a simulation return loss diagram of a dual-frequency circularly polarized antenna provided by the embodiment of the present application;

[0040] Fig. 13 is a simulation axial ratio diagram of a dual-frequency circularly polarized antenna provided by the embodiment of the present application;

[0041] Fig. 14 is a simulation rotation direction diagram of a dual-frequency circularly polarized antenna provided by the embodiment of the present application;

[0042] Fig. 15 is a simulation radiation efficiency diagram of a dual-frequency circularly polarized antenna provided by the embodiment of the present application.

[0043] The above-described figures have shown the explicit embodiments of the present application, which will be described in more detail hereinafter. These figures and the written description are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0044] Legend of reference numerals: 10: antenna structure; 110: first double-ring antenna unit; 111: first antenna; 112: second antenna; 120: second double-ring antenna unit; 121: third antenna; 122: fourth antenna; 20: metal column; 801: feed point; 802: component. DETAILED DESCRIPTION

[0045] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements, unless the context of use indicates otherwise. The following description of exemplary embodiments is not representative of all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0046] The terms "first", "second", and the like in the description of the embodiments of the present application, claims, and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to such processes, methods, products, or apparatuses.

[0047] In the description of the embodiments of the present application, it should be understood that the terms "upper", "top", "lower", "front", "back", "longitudinal", "transverse", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically specified and limited.

[0048] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "communicated", and "connected" should be understood broadly, for example, it can be fixedly connected, or connected through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0049] With the development of positioning devices, accurate positioning has become one of the necessary functions. As the most important member of smart wearable devices, smart watches, smart glasses and the like with positioning function need to design, for example, Global Positioning System (GPS) antennas, Beidou antennas, GLONASS antennas and the like, Global Navigation Satellite System (GNSS) antennas in order to realize the function of accurate positioning. At present, the civil frequency band of the GPS satellite positioning system mainly includes L1 (1.575 GHz) and L5 (1.176 GHz). Among them, the L1 frequency band is the main working frequency band, and the L5 plays an auxiliary role. At the same time, in order to improve the signal transmission efficiency from the satellite to the ground and the positioning accuracy, the GPS antenna generally needs to be designed as a circularly polarized antenna. However, due to the small size and high integration of the existing wearable devices such as smart watches, the circularly polarized antennas thereof are mostly single-frequency circularly polarized designs, and the metal frame of the watch is mostly used to design the dual-frequency circularly polarized design. However, the metal frame of the watch also needs to be designed as a common body for LTE, WiFi and other antennas, which will cause serious mutual interference between the circularly polarized GPS antenna and Long-Term Evolution (LTE) and Wireless Fidelity (WiFi), greatly affecting the performance of the GPS antenna. Therefore, there is an urgent need for a dual-frequency circularly polarized GPS antenna design scheme with small mutual influence in smart watches and other wearable devices.

[0050] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described again in some examples. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0051] FIG. 1 is a structural schematic diagram of an antenna structure provided by an embodiment of the present application, and FIG. 2 is an exploded view I of the antenna structure provided by the embodiment of the present application, as shown in FIG. 1 and FIG. 2, the antenna structure comprises:

[0052] The first double-ring antenna unit 110 and the second double-ring antenna unit 120, wherein the first double-ring antenna unit 110 comprises a first antenna 111 and a second antenna 112, and the second antenna 112 surrounds the first antenna 111; the second double-ring antenna unit 120 comprises a third antenna 121 and a fourth antenna 122, and the fourth antenna 122 surrounds the third antenna 121.

[0053] The surface of the first double-loop antenna unit 110 is not in contact with the surface of the second double-loop antenna unit 120. The first double-loop antenna unit 110 is electrically connected to the second double-loop antenna unit 120; the antenna structure is electrically connected to the electronic device in which the antenna structure is arranged.

[0054] Exemplarily, in one double-loop antenna unit, the inner small-loop antenna (e.g., the first antenna 111) can be used for a frequency signal, and the outer large-loop antenna (e.g., the second antenna 112) can be used for another frequency signal. Such a configuration allows the antenna structure to support multiple frequency bands at the same time, which is suitable for multiple wireless communication standards. The antenna structure is electrically connected to the electronic device in which the antenna structure is arranged, which can ensure that the antenna system works in coordination with other parts of the device, thereby improving the overall performance of the device and the user experience.

[0055] Optionally, since the first double-loop antenna unit 110 is electrically connected to the second double-loop antenna unit 120, the first double-loop antenna unit 110 and the second double-loop antenna unit 120 can generate two loop currents. Since the two loop structures have different radii and thus different lengths, the loop currents can be generated in different frequency bands to form circularly polarized waves and thus realize circular polarization performance.

[0056] In a limited space, more functions can be realized without sacrificing performance through the double-loop antenna unit, which is particularly important for miniaturized devices.

[0057] FIG. 3 is a structural schematic diagram of the first double-loop antenna unit 110 provided by an embodiment of the present application. As shown in FIG. 3, the first double-loop antenna unit 110 includes a first antenna 111 and a second antenna 112, wherein the diameter of the first antenna 111 is smaller than that of the second antenna 112.

[0058] FIG. 4 is a structural schematic diagram of the second double-loop antenna unit 120 provided by an embodiment of the present application. As shown in FIG. 4, the second double-loop antenna unit 120 includes a third antenna 121 and a fourth antenna 122, wherein the diameter of the third antenna 121 is smaller than that of the fourth antenna 122.

[0059] FIG. 5 is a structural schematic diagram of an antenna structure provided by an embodiment of the present application. On the basis of the embodiment shown in FIG. 5, in the antenna structure, the first antenna 111 is electrically connected to the third antenna 121, and the second antenna 112 is electrically connected to the fourth antenna 122.

[0060] In one example, the first antenna 111 is electrically connected between the first electrical connection point of the third antenna 121 and the first electrical connection point of the fourth antenna 122, and the second electrical connection point of the first antenna 111 is electrically connected between the second electrical connection point of the third antenna 121 and the second electrical connection point of the fourth antenna 122.

[0061] In one example, the first double-loop antenna unit 110 and the second double-loop antenna unit 120 can be implemented in the following ways.

[0062] First implementation: the first electrical connection point of the first antenna 111 is electrically connected to the first electrical connection point of the third antenna 121 through at least one conductor, and the second electrical connection point of the first antenna 111 is electrically connected to the second electrical connection point of the third antenna 121 through at least one conductor.

[0063] The first electrical connection point of the second antenna 112 is electrically connected to the first electrical connection point of the fourth antenna 122 through at least one conductor, and the second electrical connection point of the second antenna 112 is electrically connected to the second electrical connection point of the fourth antenna 122 through at least one conductor.

[0064] The conductor is a metal column.

[0065] Second implementation: the first electrical connection point of the first antenna 111 is electrically connected to the first electrical connection point of the third antenna 121 through at least one conductor, and the second electrical connection point of the first antenna 111 is electrically connected to the second electrical connection point of the third antenna 121 through at least one conductor.

[0066] The first electrical connection point of the second antenna 112 is electrically connected to the first electrical connection point of the fourth antenna 122 through at least one conductor, and the second electrical connection point of the second antenna 112 is electrically connected to the second electrical connection point of the fourth antenna 122 through at least one conductor.

[0067] The conductor is a wire; the first antenna 111 and the third antenna 121 are fixedly connected through at least one non-conductive body, and the second antenna 112 and the fourth antenna 122 are fixedly connected through at least one non-conductive body.

[0068] Third implementation: the first double-loop antenna unit 110 and the second double-loop antenna unit 120 are fixedly arranged in the electronic device.

[0069] Exemplarily, the first antenna 111 and the third antenna 121 can form a loop current through the electrical connection between the first electrical connection point of the first antenna 111 and the first electrical connection point of the third antenna 121, and the electrical connection between the second electrical connection point of the first antenna 111 and the second electrical connection point of the third antenna 121. The second antenna 112 and the fourth antenna 122 can form a loop current through the electrical connection between the first electrical connection point of the second antenna 112 and the first electrical connection point of the fourth antenna 122, and the electrical connection between the second electrical connection point of the second antenna 112 and the second electrical connection point of the fourth antenna 122.

[0070] Optionally, the electrical connection between the electrical connection points is achieved through a conductor, which can be one or more metal columns. The metal columns can serve as conductors to transmit signals of one antenna unit to another antenna unit.

[0071] Optionally, the metal column can be solid or hollow, depending on the required electrical properties and mechanical stability.

[0072] Optionally, the two antenna units are fixedly arranged on the shell or internal structure of the electronic device, and the electrical connection between them is achieved through the wiring on the circuit board or other built-in conductive paths.

[0073] In one example, the electronic device further comprises a connecting unit; the connecting unit is in a trapezoidal structure, a first contact surface of the connecting unit is electrically connected to the main board of the electronic device, a second contact surface of the connecting unit is used to support the antenna structure, and the connecting unit is fixedly connected to the electronic device.

[0074] It should be noted that the connecting structure can also be used to electrically connect the main board of the watch and the small board of the watch. The small board is a functional circuit board. The connecting unit is fixedly connected to the electronic device. As shown in FIG. 6, FIG. 6 is a perspective view of the connecting unit according to an embodiment of the present application, and FIG. 7 is a perspective view of the connecting unit according to an embodiment of the present application.

[0075] Optionally, the GPS antenna ground plate and the watch main ground plate are connected together through the connecting line.

[0076] Exemplarily, the first contact surface is the part of the connecting unit connected to the main board of the electronic device. This contact surface needs to be designed to be large enough and flat enough to ensure good electrical contact and mechanical fixation. Optionally, soldering, screwing or other mechanical fasteners are used to achieve this.

[0077] The second contact surface of the connecting unit is used to support the antenna structure; and the connecting unit is fixedly connected to the electronic device.

[0078] That is, the second contact surface is used to support the second double-loop antenna unit 120.

[0079] In one example, at least one component 802 is connected between the third antenna 121 and the fourth antenna 122, and / or at least one feed point 801 is arranged between the third antenna 121 and the fourth antenna 122.

[0080] The feed point is an important part of the antenna system, which is responsible for connecting the signal source (such as a radio transmitter) with the antenna, ensuring that the signal can be effectively transmitted to the antenna and radiated out.

[0081] By arranging the feed point between the third antenna 121 and the fourth antenna 122, the control of these antennas can be realized, allowing them to work at different frequencies or participate in signal transmission and reception in different ways.

[0082] Exemplarily, the component can be a capacitor, an inductor, etc. The component has a traction effect on the current on the third antenna 121 and the fourth antenna 122, thereby forming a right-handed circularly polarized wave at the corresponding frequency band.

[0083] Circularly polarized wave refers to a wave form in which the electric field vector of an electromagnetic wave rotates over time. Right-handed circularly polarized wave refers to a wave form in which the electric field vector rotates counterclockwise along the propagation direction. In some applications, such as satellite communication, radar systems, etc., circularly polarized wave has certain advantages, such as reducing multipath effect, improving signal quality, etc.

[0084] As shown in FIG. 8, FIG. 8 is a schematic diagram of the feed point connection provided by the embodiment of the present application. The feed point is used for transmitting or receiving signals in the antenna system. The number of feed points 801 and components 802 is not limited.

[0085] In one example, the first antenna 111 is a circular line / serpentine line; and / or, the second antenna 112 is a circular line / serpentine line; the third antenna 121 is a circular line / serpentine line; and / or, the fourth antenna 122 is a circular line / serpentine line. As shown in FIG. 9, FIG. 9 is a schematic diagram of a serpentine line provided by the embodiment of the present application.

[0086] Exemplarily, the advantage of the loop antenna is that their size is relatively small, easy to manufacture and integrate into various devices. At the same time, in the case where the size of the device is small, resulting in the size of the antenna corresponding to the frequency being insufficient to reach the effective working frequency, the effective length of the antenna can be increased by the serpentine antenna.

[0087] In one example, the diameter of the first antenna 111 is smaller than the diameter of the second antenna 112; the diameter of the third antenna 121 is smaller than the diameter of the fourth antenna 122; the frequency band corresponding to the first antenna 111 and the third antenna 121 is the L1 frequency band of the GPS satellite positioning system; the frequency band corresponding to the second antenna 112 and the fourth antenna 122 is the L5 frequency band of the GPS satellite positioning system.

[0088] Exemplarily, as shown in FIG. 10, FIG. 10 is an L1 frequency band current diagram provided by the embodiment of the application, and FIG. 11 is an L5 frequency band current diagram provided by the embodiment of the application. It can be seen that the L1 resonance point is mainly generated by the inner ring, and the L5 resonance point is mainly generated by the outer ring, the inner ring and the main floor.

[0089] Optionally, the antenna structure can be applied to wearable devices, such as smart watches, smart earphones, smart glasses and the like.

[0090] Taking the application of the above antenna structure to a smart watch as an example, as shown in FIG. 15, FIG. 15 is a schematic diagram of a watch antenna structure provided by the embodiment of the application. The overall structure includes a GPS independent radiation path structure, i.e., a double-ring structure in upper and lower layers, a grounding column, a connecting wire, a watch main floor and a metal frame. As shown in the figure, the metal frame of the watch is not used, and a GPS antenna with an independent radiation path is designed at the bottom of the back of the watch. The antenna is composed of a floor in the center and a double-ring structure. The floor in the center is connected to the main floor of the watch through a metal connecting wire. The upper and lower double-ring structures have approximately the same height as the center floor, and the lower double-ring structure is composed of two ring structures with different radii. The upper double-ring structure is connected to the lower double-ring structure through a metal column at a height difference (≥1.5 mm) from the center floor to extend the length. There are grounding columns connected to the main floor on the upper outer ring and the lower outer ring. The two paths, i.e., the double-layer ring structure, are the basis for forming a dual-frequency circularly polarized wave. The double-layer ring structure can generate two ring currents, and because the two ring structures have different radii and lengths, they can generate ring currents in the L1 and L5 frequency bands to form a circularly polarized wave and realize circularly polarized performance.

[0091] There is at least one lumped component between the two paths to adjust the lengths of the two paths so that they resonate at the corresponding operating frequency bands; at the same time, the lumped component has a traction effect on the current, thereby forming a right-handed circularly polarized wave at the corresponding frequency band. As shown in FIG. 12, FIG. 12 is a schematic diagram of a return loss simulation of a dual-frequency circularly polarized antenna provided by the embodiment of the application. As shown in the figure, the GPS antenna generates resonance at L1 and L5, respectively; return loss (SWR) is an index for measuring the matching degree between the antenna and the transmission line. A lower return loss means better matching, thereby reducing signal reflection and energy loss. The resonance of the GPS antenna at L1 and L5: this indicates that the antenna is in a good matching state at these two frequency points, which is suitable for receiving GPS signals.

[0092] As shown in FIG. 13, FIG. 13 is a simulation axial ratio diagram of the dual-frequency circularly polarized antenna provided in the embodiment of the present application, the axial ratios of the GPS antenna at L1 and L5 are less than 3dB. Axial ratio is a parameter describing the quality of circularly polarized waves, and in an ideal case, the axial ratio of perfect circularly polarized waves is 0dB. The smaller the axial ratio, the better the quality of circularly polarized waves. The axial ratios of the GPS antenna at L1 and L5 are less than 3dB, which means that at these frequencies, the circularly polarized waves generated by the antenna have high quality and are suitable for applications that require high circular polarization quality.

[0093] As shown in FIG. 14, FIG. 14 is a simulation handedness diagram of the dual-frequency circularly polarized antenna provided in the embodiment of the present application, and as shown in the figure, the handedness of the GPS antenna at L1 and L5 is right-handed; handedness describes the direction of the electric field vector of electromagnetic waves. The electric field vector of right-handed circularly polarized waves rotates counterclockwise along the propagation direction. The handedness of the GPS antenna at L1 and L5 is right-handed, which means that the circularly polarized waves generated by the antenna at these two frequencies are right-handed, which is necessary for specific applications (such as satellite communication).

[0094] As shown in FIG. 15, FIG. 15 is a simulation radiation efficiency diagram of the dual-frequency circularly polarized antenna provided in the embodiment of the present application, and as shown in the figure, the efficiency of the GPS antenna at L5 is -10dB, and the efficiency at L1 is -7dB. Radiation efficiency refers to the ability of an antenna to convert input power into electromagnetic wave energy. Higher radiation efficiency means that more input power is effectively converted into radiated energy.

[0095] Optionally, the lumped element is in the same layer as the center floor and the double-layer ring structure, and is connected to the inner ring at one end and to the outer ring at the other end to simultaneously adjust the two ring structures.

[0096] In this embodiment, the first double-ring antenna unit 110 and the second double-ring antenna unit 120 are electrically connected, so that the first double-ring antenna unit 110 and the second double-ring antenna unit can generate two ring currents, and because the two ring structures have different radii and lengths, they can generate ring currents at different frequency bands to form circularly polarized waves and realize circular polarization performance.

[0097] The embodiment of the present application also provides an electronic device, and the electronic device is provided with the antenna structure provided in the above embodiment.

[0098] The embodiment of the present application also provides a wearable device, and the wearable device is provided with the antenna structure provided in the above embodiment.

[0099] It is finally to be understood that the application is not limited to the embodiments described above, which are presented as examples only but which will be readily susceptible to modification of form, fitting of equivalent without departing from the spirit of the application. The application is limited only as defined in the appending claims as interpreted according to the principles of patent law.

[0100] The above description is only specific embodiments of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. An antenna structure, characterized by The antenna structure comprises: a first double-ring antenna unit and a second double-ring antenna unit, wherein the first double-ring antenna unit comprises a first antenna and a second antenna, and the second antenna surrounds the first antenna; the second double-ring antenna unit comprises a third antenna and a fourth antenna, and the fourth antenna surrounds the third antenna; a surface of the first double-ring antenna unit is not in contact with a surface of the second double-ring antenna unit; the first double-ring antenna unit is electrically connected with the second double-ring antenna unit; the antenna structure is electrically connected with an electronic device for arranging the antenna structure.

2. The antenna structure of claim 1, wherein, The first antenna is electrically connected with the third antenna, and the second antenna is electrically connected with the fourth antenna.

3. The antenna structure of claim 2, wherein, A first electrical connection point of the first antenna is electrically connected with a first electrical connection point of the third antenna, and a second electrical connection point of the first antenna is electrically connected with a second electrical connection point of the third antenna; A first electrical connection point of the second antenna is electrically connected with a first electrical connection point of the fourth antenna, and a second electrical connection point of the second antenna is electrically connected with a second electrical connection point of the fourth antenna.

4. The antenna structure of claim 3, wherein, The first electrical connection point of the first antenna is electrically connected with the first electrical connection point of the third antenna through at least one conductor, and the second electrical connection point of the first antenna is electrically connected with the second electrical connection point of the third antenna through at least one conductor; The first electrical connection point of the second antenna is electrically connected with the first electrical connection point of the fourth antenna through at least one conductor, and the second electrical connection point of the second antenna is electrically connected with the second electrical connection point of the fourth antenna through at least one conductor.

5. The antenna structure of claim 4, wherein, The conductor is a metal column.

6. The antenna structure of claim 4, wherein, The conductor is a wire; the first antenna is fixedly connected with the third antenna through at least one non-conductive body, and the second antenna is fixedly connected with the fourth antenna through at least one non-conductive body.

7. The antenna structure of any of claims 3-6, wherein, The first double-ring antenna unit and the second double-ring antenna unit are fixedly arranged in the electronic device.

8. The antenna structure of any one of claims 1-7, wherein, At least one component is connected between the third antenna and the fourth antenna, and / or at least one feeding point is arranged between the third antenna and the fourth antenna.

9. The antenna structure of any of claims 1-8, wherein, The first antenna is a circular line / serpentine line; and / or the second antenna is a circular line / serpentine line; the third antenna is a circular line / serpentine line; and / or the fourth antenna is a circular line / serpentine line.

10. The antenna structure of any one of claims 1-9, wherein, A diameter of the first antenna is smaller than a diameter of the second antenna; a diameter of the third antenna is smaller than a diameter of the fourth antenna; A frequency band corresponding to the first antenna and the third antenna is an L1 frequency band of a GPS satellite positioning system; A frequency band corresponding to the second antenna and the fourth antenna is an L5 frequency band of the GPS satellite positioning system.

11. An electronic device, comprising: The electronic device is provided with the antenna structure as claimed in any one of claims 1-10.

12. The electronic device of claim 11, wherein, The antenna structure further comprises a connecting unit; the connecting unit is a trapezoidal structure, a first contact surface of the connecting unit is electrically connected with a mainboard of the electronic device, and a second contact surface of the connecting unit is used for supporting the antenna structure; the connecting unit is fixedly connected with the electronic device.

13. A wearable device, comprising: The wearable device is provided with the antenna structure as claimed in any one of claims 1-10.

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