Antenna assembly and electronic equipment

Abstract

The embodiment of the utility model provides an antenna assembly and electronic equipment, the antenna assembly comprises an annular radiator, the annular radiator at least comprises a first feed node, a first grounding node, a second grounding node, a first radiation part and a second radiation part, and the first radiation part and the second radiation part are respectively used for transmitting signals of a first working frequency band and a second working frequency band; the first radiation part comprises an arc section located between the first feed node and the first grounding node; the second radiation part comprises an arc section located between the first grounding node and the second grounding node. The length of the arc section occupied by the first radiation part and the second radiation part on the annular radiation body can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of antennas, and particularly relates to an antenna assembly and an electronic device. Background Art

[0002] With the development of electronic devices such as wearable devices and mobile phones, satellite positioning has become one of their main functions. In order to achieve the purpose of satellite positioning and trajectory recording, a satellite positioning antenna is essential.

[0003] The miniaturization of electronic devices also poses challenges to the design of satellite positioning antennas. In related technologies, satellite positioning antennas usually require a large occupied area, which is not conducive to integrating other antennas in electronic devices; or other antennas and satellite positioning antennas can be overlapped and arranged in electronic devices, but this will cause mutual interference between different antennas and increase the complexity of antenna design and debugging. Summary of the Invention

[0004] The present application provides an antenna assembly and an electronic device, aiming to improve the integration of antennas on a circular radiator and reduce the interference between signals of different antennas when integrating multiple antennas.

[0005] In a first aspect, an embodiment of the present application provides an antenna assembly, including:

[0006] A circular radiator, the circular radiator at least includes a first feeding node, a first grounding node, and a second grounding node;

[0007] The circular radiator includes a first radiation part and a second radiation part. The first radiation part is used to transmit signals of a first operating frequency band, and the second radiation part is used to transmit signals of a second operating frequency band;

[0008] The first radiation part includes an arc segment located between the first feeding node and the first grounding node;

[0009] The second radiation part includes an arc segment located between the first grounding node and the second grounding node.

[0010] In a second aspect, an embodiment of the present application provides an electronic device, and the electronic device includes the foregoing antenna assembly.

[0011] The antenna assembly and electronic device provided by the embodiments of the present application, the antenna assembly includes an annular radiator, the annular radiator at least includes a first feeding node, a first grounding node, a second grounding node, and the annular radiator includes a first radiation portion and a second radiation portion, the first radiation portion is used to transmit signals in a first operating frequency band, the second radiation portion is used to transmit signals in a second operating frequency band; the first radiation portion includes an arc segment located between the first feeding node and the first grounding node; the second radiation portion includes an arc segment located between the first grounding node and the second grounding node. By setting the first radiation portion and the second radiation portion of the annular radiator to share the same grounding node, that is, the first grounding node, the arc segment lengths occupied by the first radiation portion for transmitting signals in the first operating frequency band and the second radiation portion for transmitting signals in the second operating frequency band on the annular radiator can be reduced, and the interference between different antennas when integrating multiple antennas can be reduced.

[0012] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the disclosure of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is a schematic structural diagram of an antenna assembly provided by an embodiment of the present application;

[0015] Figures 2 to 4 is a schematic structural diagram of the antenna assembly in some embodiments of the present application;

[0016] Figure 5 is a schematic diagram of the radiation efficiency of the antenna assembly in some embodiments of the present application;

[0017] Figure 6 is a schematic diagram of the radiation efficiency of the antenna assembly in the related art;

[0018] Figure 7a is a schematic structural diagram of the antenna assembly in some other embodiments of the present application;

[0019] Figure 7b is a schematic diagram of the first matching circuit in some embodiments of the present application;

[0020] Figure 8 is a schematic structural diagram of the antenna assembly in some other embodiments of the present application;

[0021] Figure 9 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0022] Figures 10a to 10c It is a schematic structural diagram of an antenna assembly of an electronic device in some embodiments of the present application.

[0023] Explanation of reference numerals:

[0024] 100, annular radiator; S1, first arc segment; S2, second arc segment;

[0025] 10, first radiation part; 20, second radiation part; 200, feeding node; 300, grounding node;

[0026] 201, first feeding node; 301, first grounding node; 302, second grounding node; 202, second feeding node; 303, third grounding node; 304, fourth grounding node;

[0027] 30, first matching circuit; 301, capacitor; 302, inductor; 40, second matching circuit; 50, third radiation part;

[0028] 101, circuit board; 60, housing; 61, bottom wall; 62, side wall; 63, metal bottom plate. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] It should be understood that the present invention can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout.

[0031] To thoroughly understand the present invention, detailed structures and steps will be presented in the following description to explain the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention can also have other implementation manners.

[0032] Next, in conjunction with the accompanying drawings, some implementation manners of the present application will be described in detail. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0033] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an antenna assembly provided by an embodiment of the present application.

[0034] As Figure 1 shown, the antenna assembly includes an annular radiator 100. In some embodiments, the annular radiator 100 may be a circular annular radiator 100, and in other embodiments, the annular radiator 100 may be an elliptical annular radiator 100.

[0035] The annular radiator 100 includes at least a first feeding node 201, a first grounding node 301, and a second grounding node 302.

[0036] As Figure 2 shown, the annular radiator 100 includes a plurality of feeding nodes 200 and a plurality of grounding nodes 300. In some embodiments, please refer to Figure 2 and Figure 3a and Figure 3b , the antenna assembly can be connected to a circuit board 101. The feeding node 200 is a node connected to the feeding port on the circuit board 101, and the grounding node 300 is a node connected to the grounding port on the circuit board 101. Optionally, the feeding node 200 and the grounding node 300 can be connected to the circuit board 101 through conductive posts, and the conductive posts can not only realize the connection between the antenna assembly and the circuit board 101, but also realize the physical support for the annular radiator 100 and the circuit board 101.

[0037] As Figure 1 or Figure 3a and Figure 3b shown, the annular radiator 100 includes a first radiation part 10 and a second radiation part 20. The first radiation part 10 is used to transmit signals of a first operating frequency band, and the second radiation part 20 is used to transmit signals of a second operating frequency band. For the convenience of description, the embodiments of the present application mainly take the example that the center frequency of the first operating frequency band is greater than the center frequency of the second operating frequency band for description.

[0038] Among them, the first radiation part 10 includes an arc segment located between the first feeding node 201 and the first grounding node 301. Exemplarily, the circuit on the circuit board 101 can receive the signals of the first operating frequency band coupled by the first radiation part 10 through the first feeding node 201, and / or the circuit on the circuit board 101 can apply the signals of the first operating frequency band to the first feeding node 201, and the first radiation part 10 emits the signals of the first operating frequency band.

[0039] Among them, the second radiation part 20 includes an arc segment located between the first grounding node 301 and the second grounding node 302.

[0040] Exemplarily, the circuit on the circuit board 101 can receive the signal of the second operating frequency band coupled by the second radiating portion 20 through the first feeding node 201, and / or the circuit on the circuit board 101 can apply the signal of the second operating frequency band to the first feeding node 201, and the second radiating portion 20 emits the signal of the second operating frequency band.

[0041] The first grounding node 301 is disposed on the first radiating portion 10 and also on the second radiating portion 20, that is, the first radiating portion 10 and the second radiating portion 20 share the first grounding node 301.

[0042] The first radiating portion 10 and the second radiating portion 20 of the annular radiator 100 share the same grounding node 300, that is, the first grounding node 301, which can reduce the arc segment length occupied by the first radiating portion 10 for transmitting the signal of the first operating frequency band and the second radiating portion 20 for transmitting the signal of the second operating frequency band on the annular radiator 100.

[0043] In some embodiments, as Figure 1 shown, the length of the arc segment between the first feeding node 201 and the first grounding node 301 is less than the length of the arc segment between the first grounding node 301 and the second grounding node 302. Exemplarily, the length of the first radiating portion 10 is less than the length of the second radiating portion 20, which can be applicable to the case where the center frequency of the first operating frequency band is greater than the center frequency of the second operating frequency band, ensuring the efficiency of the first radiating portion 10 for transmitting and / or receiving the signal of the first operating frequency band, and ensuring the efficiency of the second radiating portion 20 for transmitting and / or receiving the signal of the second operating frequency band.

[0044] In some embodiments, as Figure 1 or Figure 3a and Figure 3b shown, by disposing the first feeding node 201 between the first grounding node 301 and the second grounding node 302, the length of the arc segment between the first feeding node 201 and the first grounding node 301 can be less than the length of the arc segment between the first grounding node 301 and the second grounding node 302.

[0045] Exemplarily, as Figure 3a and Figure 3b shown, the annular radiator 100 includes a first arc segment S1 and a second arc segment S2 between the first grounding node 301 and the second grounding node 302, that is, the first grounding node 301 and the second grounding node 302 divide the annular radiator 100 into the first arc segment S1 and the second arc segment S2. Among them, the first feeding node 201 is disposed on the first arc segment S1 between the first grounding node 301 and the second grounding node 302.

[0046] For example, the entire first arc segment S1 serves as the second radiation portion 20, and a partial arc segment of the first arc segment S1 close to the first grounding node 301 serves as the first radiation portion 10. Optionally, the first feeding node 201 is disposed on a side of the first arc segment S1 close to the second grounding node 302, or in other words, the length of the arc segment between the first feeding node 201 and the second grounding node 302 is less than the length of the arc segment between the first feeding node 201 and the first grounding node 301.

[0047] As Figure 1 or Figure 3a and Figure 3b shown, the first radiation portion 10 and the second radiation portion 20 of the annular radiator 100 partially overlap, that is, the first radiation portion 10 and the second radiation portion 20 are co-aperture arranged. As Figure 4 shown is a current distribution diagram of the antenna assembly in an embodiment, where the solid arrowed line between the first feeding node 201 and the first grounding node 301 represents the current distribution of the L1 frequency band signal on the first radiation portion 10, and the dashed arrowed line between the first grounding node 301 and the second grounding node 302 represents the current distribution of the L5 frequency band signal on the second radiation portion 20.

[0048] By arranging the first radiation portion 10 and the second radiation portion 20 co-aperture on the annular radiator 100, the arc segment lengths occupied by the first radiation portion 10 for transmitting the first operating frequency band signal and the second radiation portion 20 for transmitting the second operating frequency band signal on the annular radiator 100 can be reduced.

[0049] In some embodiments, reducing the arc segment lengths occupied by the first radiation portion 10 and the second radiation portion 20 facilitates arranging radiation portions for other operating frequency band signals on other arc segments of the annular radiator 100. Optionally, as Figure 3a or Figure 4 shown, the annular radiator 100 further includes a second feeding node 202, a third grounding node 303, and a third radiation portion 50. The third radiation portion 50 includes an arc segment between the second feeding node 202 and the third grounding node 303. The third radiation portion 50 is used to transmit signals of the third operating frequency band. Of course, it is not limited thereto. For example, the annular radiator 100 may further include a fourth radiation portion for transmitting signals of the fourth operating frequency band; arranging at least the third radiation portion 50 on the annular radiator 100 can improve the integration of the antenna assembly.

[0050] The third radiation portion 50 is disposed on the second arc segment S2 of the annular radiator 100, and the second arc segment S2 is spaced apart from the first arc segment S1. As Figure 3a or Figure 4As shown, the second arc segment S2 and the first arc segment S1 are separated by the first ground node 301 and the second ground node 302, such that the second arc segment S2 is the arc segment of the loop radiator 100 other than the first arc segment S1. Since the arc segment lengths occupied by the first radiation portion 10 and the second radiation portion 20 are relatively small, sufficient space is left for arranging the third radiation portion 50. For example, the spacing distance between the third radiation portion 50 and the first radiation portion 10 and the second radiation portion 20 can be larger, or grounding processing can be increased to reduce the electromagnetic interference between the third radiation portion 50 and the first radiation portion 10 and the second radiation portion 20, thereby providing the reliability of the antenna assembly.

[0051] In some embodiments, the first operating frequency band is the L1 band of the Global Navigation Satellite System (GNSS), and the second operating frequency band is the L5 band of the Global Navigation Satellite System; the first radiation portion 10 can be referred to as the L1 antenna, and the second radiation portion 20 can be referred to as the L5 antenna. Among them, the frequency of the L1 band is approximately 1.6 GHz, and the frequency of the L5 band is approximately 1.2 GHz. Exemplarily, the antenna assembly receives the positioning signal of the Global Navigation Satellite System, and the electronic device can determine the position information according to the positioning signal received by the antenna assembly, and can also display the position information. For example, the current position can be displayed on the map according to the position information. It should be noted that the L1 band and the L5 band in the embodiments of the present application are only examples for the first operating frequency band and the second operating frequency band; it should be understood that at least one of the first operating frequency band and the second operating frequency band can also be other frequency bands, such as the L2 band of the Global Navigation Satellite System.

[0052] For example, the third operating frequency band is the Bluetooth and / or Wi-Fi band, and the third radiation portion 50 can be referred to as the Bluetooth and / or Wi-Fi antenna. Exemplarily, the circuit on the circuit board 101 can receive the signal of the third operating frequency band coupled by the third radiation portion 50 through the second feeding node 202, and / or the circuit on the circuit board 101 can apply the signal of the third operating frequency band to the second feeding node 202, and the third radiation portion 50 emits the signal of the third operating frequency band. The electronic device equipped with this antenna assembly can perform Bluetooth communication and / or Wi-Fi communication with other devices.

[0053] Exemplarily, Bluetooth technology is also crucial in electronic devices such as smart watches. Through the Bluetooth antenna, the smart watch can synchronize data with a smart phone or other Bluetooth-compatible devices so that users can view sports data, receive notifications, and even control music playback in real time. In some embodiments, the length corresponding to the first radiation portion 10 is 1 / 4 of the wavelength of the target frequency, where the target frequency is greater than the center frequency of the second operating frequency band and less than the center frequency of the first operating frequency band.

[0054] Exemplarily, when the first operating frequency band is the L1 band and the second operating frequency band is the L5 band, the target frequency is greater than the center frequency of the L5 band and less than the center frequency of the L1 band.

[0055] Exemplarily, the resonance frequency corresponding to the first radiation portion 10 is greater than 1.1 times the center frequency of the second operating frequency band and less than 0.9 times the center frequency of the first operating frequency band.

[0056] Exemplarily, when the first operating frequency band is the L1 band and the second operating frequency band is the L5 band, the equivalent antenna length corresponding to the first radiation portion 10 is greater than or equal to 10 cm and less than or equal to 12 cm.

[0057] As Figure 1 or Figure 3a shown, the first radiation portion 10 and the second radiation portion 20 are co-aperture arranged. The length corresponding to the first radiation portion 10 is 1 / 4 of the wavelength of the target frequency, which can enable the first arc segment S1 to resonate at the target frequency f. Please refer to Figure 5 , for signals with a signal frequency in the first operating frequency band (such as the L1 band), the first radiation portion 10 has a high radiation efficiency, and for signals with a signal frequency in the second operating frequency band (such as the L5 band), the second radiation portion 20 also has a high radiation efficiency (above the horizontal dotted line). From Figure 5 it can be seen that when the first arc segment S1 resonates at the target frequency f, the first radiation portion 10 and the second radiation portion 20 both have high antenna radiation efficiency in at least the L1 band and the L5 band of the global navigation satellite system.

[0058] For ease of explanation, please refer to Figure 6 , as Figure 6 shown, it is a schematic diagram of the radiation efficiency corresponding to different signal frequencies when the resonance frequency of the first radiation portion 10 is in the L1 band or in the L5 band. When the resonance frequency of the first radiation portion 10 is in the L5 band, for signals with a signal frequency in the L1 band, the radiation efficiency of the first radiation portion 10 is low; and when the resonance frequency of the first radiation portion 10 is in the L1 band, for signals with a signal frequency in the L5 band, the radiation efficiency of the first radiation portion 10 is low; and for signals of the global navigation satellite system, a large reduction in the radiation efficiency of the antenna is unacceptable. In the embodiments of the present application, by setting the length corresponding to the first radiation portion 10 to be 1 / 4 of the wavelength of the target frequency, the first radiation portion 10 and the second radiation portion 20 arranged with a common aperture of the antenna assembly both have high antenna radiation efficiency for signals of the global navigation satellite system.

[0059] For example, the target frequency can be the average value of the center frequency of the L5 band and the center frequency of the L1 band.

[0060] For example, the difference between the target frequency and the center frequency of the L5 band is less than the difference between the target frequency and the center frequency of the L1 band. The target frequency is closer to the center frequency of the L5 band, and compared with the target frequency being closer to the center frequency of the L1 band, the radiation efficiency of the first radiation portion 10 for the L5 band signal can be further improved.

[0061] In some embodiments, referring to Figure 4 , by disposing a second grounding node 302 outside the first feeding node 201 of the first radiation portion 10, the current distribution of the L5 band signal on the second radiation portion 20 can be affected. For example, the efficiency and axial ratio of the second radiation portion 20 for transmitting the L5 band signal can be affected.

[0062] Exemplarily, by setting the distance between the first feeding node 201 and the second grounding node 302, the efficiency and axial ratio of the second radiation portion 20 for transmitting the L5 band signal can be adjusted, or in other words, aperture tuning for the L5 band can be achieved. For example, the axial ratio and efficiency of the global navigation satellite system antenna can be improved.

[0063] In some embodiments, as Figure 7a shown, the antenna assembly further includes a first matching circuit 30, and the first feeding node 201 is grounded through the first matching circuit 30. Exemplarily, as Figure 7b shown, the first matching circuit 30 includes a capacitor 301 and an inductor 302, and the capacitor 301 and the inductor 302 are in parallel.

[0064] Setting the first matching circuit 30 can adjust the impedance of the first radiation portion 10 for the first operating band signal, and at least achieve impedance matching of the first radiation portion 10 for the first operating band signal. Exemplarily, for at least one frequency in the first operating band, the equivalent impedance between the first feeding node 201 and the first grounding node 301 is 50 ohms, so as to at least reduce the return loss of the first radiation portion 10 for the first operating band signal.

[0065] Setting the first matching circuit 30 can adjust the impedance of the second radiation portion 20 for the second operating band signal, and can also at least to a certain extent achieve impedance matching of the second radiation portion 20 for the second operating band signal. For example, for at least one frequency in the second operating band, the equivalent impedance of the second radiation portion 20 is equal to 50 ohms or close to 50 ohms, so as to reduce the return loss of the second radiation portion 20 for the second operating band signal. Thereby, the overall radiation efficiency of the antenna assembly for the first operating band and the second operating band signals can be improved.

[0066] Optionally, the first matching circuit 30 is a capacitive circuit. For example, the first matching circuit 30 includes a capacitor 301. Compared with the case where the first matching circuit 30 is not provided or the first matching circuit 30 is an inductive circuit, when the first matching circuit 30 is a capacitive circuit, for the signal in the first operating frequency band, the first radiating portion 10 can be equivalent to a shorter current path, and for the signal in the L5 frequency band, the second radiating portion 20 can be equivalent to a shorter current path. Thus, the impedance and resonance frequency of the first radiating portion 10 and the second radiating portion 20 can be adjusted, so that the transmission performance of the first radiating portion 10 for the L1 frequency band signal and the transmission performance of the second radiating portion 20 for the L5 frequency band signal can be improved. For example, it can be ensured that the first radiating portion 10 and the second radiating portion 20 have better impedance characteristics and radiation efficiency.

[0067] Optionally, the first matching circuit 30 is an inductive circuit. For example, the first matching circuit 30 includes an inductor 302. Compared with the case where the first matching circuit 30 is not provided or the first matching circuit 30 is a capacitive circuit, when the first matching circuit 30 is an inductive circuit, for the signal in the first operating frequency band, the first radiating portion 10 can be equivalent to a longer current path, and for the signal in the L5 frequency band, the second radiating portion 20 can be equivalent to a longer current path. Thus, the impedance and resonance frequency of the first radiating portion 10 and the second radiating portion 20 can be adjusted, so that the transmission performance of the first radiating portion 10 for the L1 frequency band signal and the transmission performance of the second radiating portion 20 for the L5 frequency band signal can be improved. For example, it can be ensured that the first radiating portion 10 and the second radiating portion 20 have better impedance characteristics and radiation efficiency.

[0068] In some embodiments, as Figure 8 shown, the antenna assembly may further include a second matching circuit 40, and the second grounding node 302 is grounded through the second matching circuit 40. Setting the second grounding node 302 to be grounded through the second matching circuit 40 can assist in adjusting the transmission performance of the second radiating portion 20 for the signal in the second operating frequency band, so that for the signal in the second operating frequency band, the second radiating portion 20 has better impedance characteristics and radiation efficiency.

[0069] Exemplarily, the second matching circuit 40 includes a capacitor and an inductor, and the capacitor and the inductor are connected in parallel; the structure of the second matching circuit 40 may refer to Figure 7b the structure of the first matching circuit 30 shown, which will not be elaborated here.

[0070] Optionally, after adjusting the equivalent impedance between the first feeding node 201 and the first grounding node 301 to 50 ohms by the first matching circuit 30 for at least one frequency in the first operating frequency band, the distance between the first feeding node 201 and the second grounding node 302 can be adjusted, and / or the parameters of the second matching circuit 40 can be adjusted, for at least one frequency in the second operating frequency band, so that the equivalent impedance of the second radiating part 20 is 50 ohms; thereby, the overall radiation efficiency of the antenna assembly for signals in the first operating frequency band and the second operating frequency band can be improved.

[0071] Optionally, the second matching circuit 40 is a capacitive circuit. For example, the second matching circuit 40 includes a capacitor. Compared with the case where the second matching circuit 40 is not provided or the second matching circuit 40 is an inductive circuit, when the second matching circuit 40 is a capacitive circuit, for signals in the L5 frequency band, the second radiating part 20 can be equivalent to a shorter current path, thereby realizing auxiliary adjustment of the impedance and resonance frequency of the second radiating part 20, that is, the transmission performance of the second radiating part 20 for signals in the L5 frequency band can be improved, such as the second radiating part 20 having better impedance characteristics and radiation efficiency.

[0072] Optionally, the second matching circuit 40 is an inductive circuit. For example, the second matching circuit 40 includes an inductor. Compared with the case where the second matching circuit 40 is not provided or the second matching circuit 40 is a capacitive circuit, when the second matching circuit 40 is an inductive circuit, for signals in the L5 frequency band, the second radiating part 20 can be equivalent to a longer current path, thereby realizing auxiliary adjustment of the impedance and resonance frequency of the second radiating part 20, that is, the transmission performance of the second radiating part 20 for signals in the L5 frequency band can be improved, such as the second radiating part 20 having better impedance characteristics and radiation efficiency.

[0073] It should be noted that the design of the Bluetooth antenna needs to consider factors such as energy consumption, signal range, communication rate, and coordination with other wireless communication modules. In the embodiments of the present application, the third radiator is also designed to improve the performance of the Bluetooth antenna.

[0074] In some embodiments, such as Figure 4As shown, the length of the arc segment between the third grounding node 303 of the third radiator and the first grounding node 301 of the first and second radiators is less than the length of the arc segment between the second feeding node 202 and the first grounding node 301. Exemplarily, the grounding node 300 of the third radiator is disposed close to the grounding node 300 of the first and second radiators, and the feeding node 200 (i.e., the second feeding node 202) of the third radiator is disposed close to the feeding node 200 (i.e., the first feeding node 201) of the first and second radiators; this is beneficial to improving the radiation efficiency of the overall antenna assembly for signals in the first operating frequency band, the second operating frequency band, and the third operating frequency band, and can reduce signal interference between them.

[0075] Optionally, please refer to Figure 4 , the annular radiator 100 further includes a fourth grounding node 304, and the fourth grounding node 304 is located between the second feeding node 202 and the second grounding node 302. As Figure 4 shown, the solid line with an arrow between the second feeding node 202 and the third grounding node 303 represents the current distribution of the Bluetooth signal on the third radiation part 50. By providing the fourth grounding node 304 between the second feeding node 202 of the third radiator and the second grounding node 302 of the second radiator, it helps to improve the isolation degree between the third radiator and the first and second radiators. For example, it can reduce the signal interference between the global navigation satellite system signal and the Bluetooth signal. For example, high-performance GPS signal reception and stable and effective Bluetooth communication can be achieved in a smart watch.

[0076] Optionally, the annular radiator 100 further includes a fifth grounding node 300 (not shown in the figure), and the fifth grounding node 300 is located between the first grounding node 301 and the third grounding node 303. Optionally, the annular radiator 100 may include the fourth grounding node 304 and the fifth grounding node 300. By providing the fifth grounding node 300 between the third radiator and the first and second radiators, it helps to improve the isolation degree between the third radiator and the first and second radiators. For example, it can reduce the signal interference between the global navigation satellite system signal and the Bluetooth signal. For example, high-performance GPS signal reception and stable and effective Bluetooth communication can be achieved in a smart watch.

[0077] The antenna assembly provided by the embodiment of the present application includes an annular radiator 100. The annular radiator 100 at least includes a first feeding node 201, a first grounding node 301, a second grounding node 302, and the annular radiator 100 includes a first radiation portion 10 and a second radiation portion 20. The first radiation portion 10 is used to transmit signals of a first operating frequency band, and the second radiation portion 20 is used to transmit signals of a second operating frequency band. The first radiation portion 10 includes an arc segment located between the first feeding node 201 and the first grounding node 301. The second radiation portion 20 includes an arc segment located between the first grounding node 301 and the second grounding node 302. By setting the first radiation portion 10 and the second radiation portion 20 of the annular radiator 100 to share the same grounding node 300, that is, the first grounding node 301, the arc segment lengths occupied by the first radiation portion 10 for transmitting signals of the first operating frequency band and the second radiation portion 20 for transmitting signals of the second operating frequency band on the annular radiator 100 can be reduced.

[0078] In some embodiments, the first radiation portion 10 and the second radiation portion 20 are co-aperture arranged on the annular radiator 100, which can reduce the arc segment lengths occupied by the first radiation portion 10 for transmitting signals of the first operating frequency band and the second radiation portion 20 for transmitting signals of the second operating frequency band on the annular radiator 100.

[0079] It should be noted that the reliability and accuracy of global navigation satellite system (such as Global Positioning System, GPS) signal reception are crucial for the performance of smart watches. In order to improve the signal reception quality, GPS antennas often adopt right-hand circular polarization (RHCP), which helps electronic devices such as smart watches receive satellite signals from different directions and polarization angles in different motion states and at various angles, and maximally resist multipath interference and signal attenuation. Since the antenna of the global navigation satellite system needs to achieve right-hand circular polarization, and on the annular radiator 100, only feed sources at specific positions and specific arc segments have a high axial ratio, that is, antennas with strong right-hand performance have designated positions on the metal ring. Since the first radiation portion 10 and the second radiation portion 20 of the embodiment of the present application are co-aperture arranged, for example, the L1 frequency band and the L5 frequency band share a radiation portion, so the L1 frequency band and the L5 frequency band can simultaneously maintain high right-hand axial ratio characteristics.

[0080] In some embodiments, reducing the arc segment lengths occupied by the first radiation portion 10 and the second radiation portion 20 can facilitate the arrangement of radiation portions for signals of other operating frequency bands, such as radiation portions for Bluetooth signals, on other arc segments of the annular radiator 100, thereby improving the integration of the antenna assembly.

[0081] Compared with the related art where the L1 - band antenna and the L5 - band antenna are respectively placed in different arc segments of the annular radiator 100, most of the arc segments of the annular radiator 100 are occupied by the GPS antenna, resulting in limited placement space for the Bluetooth antenna. For small - sized wearable devices, the Bluetooth antenna can only be placed in the arc segment of the L1 - band antenna or the L5 - band antenna. However, since the Bluetooth and GPS antennas share the same radiation aperture, it often causes mutual interference between the Bluetooth and GPS signals. This not only increases the complexity of antenna design and debugging but also may lead to a decrease in the performance of the GPS antenna. Or the Bluetooth antenna can use other forms of antennas, such as an antenna of the Flexible Printed Circuit (FPC) type. However, if other forms of Bluetooth antennas are selected, the position of the antenna must be readjusted, which poses a challenge in the case of limited internal space in current smart wearable devices, and the coupling effect between the changed Bluetooth antenna and the GPS antenna is usually difficult to predict and control, bringing additional uncertainty and risk to the design. In the embodiments of the present application, the mutual interference between the Bluetooth antenna (the third radiation part 50) and the GPS antenna (the first radiation part 10 and the second radiation part 20) can be reduced by arranging them at intervals in different arc segments of the annular radiator 100.

[0082] Please refer to the foregoing embodiments in conjunction with Figure 9 , Figure 9 which is a schematic diagram of an electronic device provided by an embodiment of the present application. The electronic device includes the antenna assembly of the foregoing embodiment.

[0083] For example, the electronic device can be a smart wearable device, such as a smart watch. Of course, it is not limited thereto. For example, the electronic device can be a code meter, a mobile phone, a tablet computer, etc.

[0084] For the sake of convenience of description, the embodiments of the present application are mainly described by taking a smart watch as an example.

[0085] In some embodiments, as Figure 10a shown, the electronic device includes a housing 60 and a circuit board 101 disposed in the housing 60. The housing 60 includes a bottom wall 61 and a side wall 62 (which can be referred to as a middle frame) connected to the bottom wall 61.

[0086] Optionally, the annular radiator 100 of the antenna assembly can be disposed on the upper edge of the side wall 62, or can be disposed on the inner wall of the side wall 62. The feeding node 200 and the grounding node 300 of the annular radiator 100 can be connected to the circuit board 101 through conductive posts.

[0087] Optionally, as Figure 10a and Figure 10bAs shown, the sidewall 62 made of metal can also be used as the annular radiator 100. The feeding node 200 and the grounding node 300 of the sidewall 62 made of metal can be connected to the circuit board 101 through any conductor.

[0088] Optionally, as Figure 10c shown, the annular radiator 100 is disposed on one side of the circuit board 101, and a metal bottom plate 63 can be disposed on the other side of the circuit board 101. For example, the bottom wall 61 of the electronic device housing 60 can be set as the metal bottom plate 63. Of course, it is not limited thereto. For example, the annular radiator 100 can be disposed between the circuit board 101 and the metal bottom plate 63. By providing the metal bottom plate 63, the antenna performance of the antenna assembly can be improved. For example, when the electronic device is worn on the human body, the metal bottom plate 63 can generate a reverse current with the grounding layer of the circuit board 101, reducing the magnetic field energy entering the human body and thus improving the radiation performance of the GPS antenna.

[0089] The specific principle and implementation manner of the electronic device provided in the embodiments of the present application are similar to those of the antenna assembly in the foregoing embodiments, and will not be elaborated herein.

[0090] It should be understood that the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0091] It should be understood that when an element or layer is referred to as being "on", "adjacent to", "connected to" or "coupled to" another element or layer, it can be directly on, adjacent to, connected or coupled to the other element or layer, or there can be intervening elements or layers. In contrast, when an element is referred to as being "directly on", "directly adjacent to", "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Thus, a first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part without departing from the teachings of the present invention.

[0092] Spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature shown in the figures with other elements or features. It should be understood that the spatial relationship terms are intended to include different orientations of the device in use and operation in addition to the orientation shown in the figures. For example, if the device in the figures is flipped, then an element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "beneath" can include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are to be interpreted accordingly.

[0093] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present invention. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0094] As described above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: An annular radiator, the annular radiator comprising at least a first feeding node, a first grounding node, and a second grounding node; The annular radiator comprises a first radiating portion and a second radiating portion, the first radiating portion is used to transmit signals in a first working frequency band, and the second radiating portion is used to transmit signals in a second working frequency band; The first radiating portion includes an arc segment located between the first feeding node and the first grounding node; The second radiating portion includes an arc segment located between the first ground node and the second ground node.

2. The antenna assembly according to claim 1, characterized in that: The first operating frequency band is a frequency band of a global navigation satellite system, and the second operating frequency band is a frequency band of a global navigation satellite system.

3. The antenna assembly according to claim 2, characterized in that: The length corresponding to the first radiation portion is 1 / 4 of the wavelength of a target frequency, wherein the target frequency is greater than a center frequency of the frequency band and less than the center frequency of the frequency band.

4. The antenna assembly according to claim 1, characterized in that: The antenna assembly further comprises: a first matching circuit, wherein the first feeding node is grounded through the first matching circuit; and / or A second matching circuit, wherein the second ground node is grounded through the second matching circuit.

5. The antenna assembly according to any one of claims 1 to 4, characterized in that: The length of an arc segment between the first feeding node and the first grounding node is smaller than the length of an arc segment between the first grounding node and the second grounding node.

6. The antenna assembly according to any one of claims 1 to 4, characterized in that: The annular radiator includes a first arc segment and a second arc segment between the first ground node and the second ground node; the first feeding node is arranged in the first arc segment between the first ground node and the second ground node; The annular radiator further includes a second feeding node, a third grounding node and a third radiating portion, the third radiating portion includes an arc segment between the second feeding node and the third grounding node, and the third radiating portion is arranged in the second arc segment of the annular radiator, and the second arc segment is spaced apart from the first arc segment; The third radiating portion is used to transmit signals in a third operating frequency band.

7. The antenna assembly according to claim 6, characterized in that: The third operating frequency band is a Bluetooth and / or WiFi frequency band.

8. The antenna assembly according to claim 6, characterized in that: The length of the arc segment between the third grounding node and the first grounding node is smaller than the length of the arc segment between the second feeding node and the first grounding node.

9. The antenna assembly according to claim 8, characterized in that: The annular radiator further includes a fourth grounding node, wherein the fourth grounding node is located between the second feeding node and the second grounding node; and / or The annular radiator further includes a fifth grounding node, and the fifth grounding node is located between the first grounding node and the third grounding node.

10. An electronic device, characterized in that: The electronic device comprises the antenna assembly according to any one of claims 1-9.

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