Antenna assembly and electronic equipment

Abstract

The embodiment of the invention provides an antenna assembly and electronic equipment, the antenna assembly comprises an annular radiator and a first matching circuit, 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, the first and second radiation parts are respectively used for transmitting signals of the first and second working frequency bands; 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 first feed node is grounded through a first matching circuit, and the first matching circuit is a capacitive circuit or an inductive circuit. The arc section length occupied by the first radiation part and the second radiation part on the annular radiation body can be reduced; by arranging the first matching circuit to be grounded, the radiation efficiency of the whole antenna assembly on signals of the first working frequency band and the second working frequency band can be improved.

Description

Antenna components, electronic devices

[0001] This application relates to the field of antenna technology, and more particularly to an antenna assembly and electronic device.

[0002] With the development of wearable devices, mobile phones and other electronic devices, satellite positioning has become one of their main functions. In order to achieve the purpose of satellite positioning and trajectory recording, satellite positioning antennas are indispensable.

[0003] The miniaturization of electronic devices has also posed challenges to the design of satellite positioning antennas. In related technologies, satellite positioning antennas usually occupy a large area, which is not conducive to the integration of other antennas into electronic devices. Alternatively, other antennas and satellite positioning antennas can be overlapped in electronic devices, but this will cause mutual interference between different antennas and increase the complexity of antenna design and debugging.

[0004]

[0005] This application provides an antenna assembly and electronic device, which aims to improve the integration of antennas on a ring radiator and reduce signal interference between different antennas when integrating multiple antennas.

[0006] In a first aspect, embodiments of this application provide an antenna assembly, including:

[0007] A ring radiator, the ring radiator including at least a first feed node, a first ground node, and a second ground node;

[0008] The annular radiator includes a first radiating part and a second radiating part, wherein the first radiating part is used to transmit signals in a first operating frequency band and the second radiating part is used to transmit signals in a second operating frequency band.

[0009] The first radiating part includes an arc segment located between the first feed node and the first ground node;

[0010] The second radiating part includes an arc segment located between the first grounding node and the second grounding node;

[0011] The first matching circuit is used to ground the first feed node, and the first matching circuit is either a capacitive circuit or an inductive circuit.

[0012] Secondly, embodiments of this application provide an electronic device, which includes the aforementioned antenna assembly.

[0013] The antenna assembly and electronic device provided in this application include a ring radiator and a first matching circuit. The ring radiator includes at least a first feed node, a first ground node, and a second ground node. The ring radiator also includes a first radiating part and a second radiating part. The first radiating part is used to transmit signals in a first operating frequency band, and the second radiating part is used to transmit signals in a second operating frequency band. The first radiating part includes an arc segment located between the first feed node and the first ground node. The second radiating part includes an arc segment located between the first ground node and the second ground node. The first feed node is grounded through the first matching circuit, which is a capacitive circuit or an inductive circuit. By setting the first and second radiating parts of the ring radiator to share the same grounding node, namely the first grounding node, the arc length occupied by the first radiating part for transmitting the first operating frequency band signal and the second radiating part for transmitting the second operating frequency band signal on the ring radiator can be reduced, thereby reducing signal interference between different antennas when integrating multiple antennas. Setting the first feed node to be grounded through the first matching circuit can adjust the impedance of the first radiating part to the first operating frequency band signal and the impedance of the second radiating part to the second operating frequency band signal, thereby improving the overall radiation efficiency of the antenna assembly for the first and second operating frequency band signals.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the disclosure of the embodiments of this application.

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of an antenna assembly provided in an embodiment of this application;

[0017] Figures 2 to 4 are schematic diagrams of the antenna assembly in some embodiments of this application;

[0018] Figure 5 is a schematic diagram of the radiation efficiency of the antenna assembly in some embodiments of this application;

[0019] Figure 6 is a schematic diagram of the radiation efficiency of antenna components in related technologies;

[0020] Figure 7a is a schematic diagram of the antenna assembly in some other embodiments of this application;

[0021] Figure 7b is a schematic diagram of the first matching circuit in some embodiments of this application;

[0022] Figure 8 is a schematic diagram of the antenna assembly in some embodiments of this application;

[0023] Figure 9 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0024] Figures 10a to 10c are schematic diagrams of the antenna assembly of an electronic device in some embodiments of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Ring radiator; S1. First arc segment; S2. Second arc segment;

[0027] 10. First radiating section; 20. Second radiating section; 200. Feeding node; 300. Grounding node;

[0028] 201, First feeder node; 301, First grounding node; 302, Second grounding node; 202, Second feeder node; 303, Third grounding node; 304, Fourth grounding node;

[0029] 30. First matching circuit; 301. Capacitor; 302. Inductor; 40. Second matching circuit; 50. Third radiating section;

[0030] 101. Circuit board; 60. Housing; 61. Bottom wall; 62. Side wall; 63. Metal base plate.

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] It should be understood that the invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the 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.

[0033] To fully understand this invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by this invention. Preferred embodiments of the invention are described in detail below; however, in addition to these detailed descriptions, the invention may have other embodiments.

[0034] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] Please refer to Figure 1, which is a schematic diagram of the structure of an antenna assembly provided in an embodiment of this application.

[0036] As shown in Figure 1, the antenna assembly includes a ring radiator 100. In some embodiments, the ring radiator 100 can be a circular ring radiator 100, and in other embodiments, the ring radiator 100 can be an elliptical ring radiator 100.

[0037] The annular radiator 100 includes at least a first feed node 201, a first ground node 301, and a second ground node 302.

[0038] As shown in Figure 2, the annular radiator 100 includes several feed nodes 200 and several ground nodes 300. In some embodiments, referring to Figures 3a and 3b in conjunction with Figure 2, the antenna assembly can be connected to the circuit board 101, with the feed nodes 200 being nodes connected to feed ports on the circuit board 101, and the ground nodes 300 being nodes connected to ground ports on the circuit board 101. Optionally, the feed nodes 200 and ground nodes 300 can be connected to the circuit board 101 via conductive posts. The conductive posts can both connect the antenna assembly to the circuit board 101 and provide physical support for the annular radiator 100 and the circuit board 101.

[0039] As shown in Figure 1 or Figures 3a and 3b, the annular radiator 100 includes a first radiating part 10 and a second radiating part 20. The first radiating part 10 is used to transmit signals in a first operating frequency band, and the second radiating part 20 is used to transmit signals in a second operating frequency band. For ease of explanation, the embodiments of this application are mainly described with the example that the center frequency of the first operating frequency band is greater than the center frequency of the second operating frequency band.

[0040] The first radiating section 10 includes an arc segment located between the first feed node 201 and the first ground node 301. For example, the circuitry on the circuit board 101 can receive signals of the first operating frequency band coupled to the first radiating section 10 through the first feed node 201, and / or the circuitry on the circuit board 101 can apply signals of the first operating frequency band to the first feed node 201, allowing the first radiating section 10 to transmit signals of the first operating frequency band.

[0041] The second radiating part 20 includes an arc segment located between the first grounding node 301 and the second grounding node 302.

[0042] For example, the circuit on the circuit board 101 can receive the signal of the second operating frequency band coupled to the second radiating part 20 through the first feed node 201, and / or the circuit on the circuit board 101 can apply the signal of the second operating frequency band to the first feed node 201, and the second radiating part 20 can transmit the signal of the second operating frequency band.

[0043] The first grounding node 301 is disposed on the first radiating part 10 and also on the second radiating part 20, that is, the first radiating part 10 and the second radiating part 20 share the first grounding node 301.

[0044] By setting the first radiating part 10 and the second radiating part 20 of the annular radiator 100 to share the same grounding node 300, namely the first grounding node 301, the arc length occupied by the first radiating part 10 for transmitting the first operating frequency band signal and the second radiating part 20 for transmitting the second operating frequency band signal on the annular radiator 100 can be reduced.

[0045] In some embodiments, as shown in FIG1, the length of the arc segment between the first feed node 201 and the first ground node 301 is less than the length of the arc segment between the first ground node 301 and the second ground node 302. For example, the length of the first radiating part 10 is less than the length of the second radiating part 20, which can be applied to situations 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 part 10 in transmitting and / or receiving signals in the first operating frequency band, and ensuring the efficiency of the second radiating part 20 in transmitting and / or receiving signals in the second operating frequency band.

[0046] In some embodiments, as shown in FIG1 or FIG3a and FIG3b, the first power supply node 201 is disposed between the first grounding node 301 and the second grounding node 302, so that the length of the arc segment between the first power supply 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.

[0047] For example, as shown in Figures 3a and 3b, the annular radiator 100 includes a first arc segment S1 and a second arc segment S2 between a first grounding node 301 and a 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. The first power supply node 201 is disposed in the first arc segment S1.

[0048] For example, the first arc segment S1 as a whole serves as the second radiating part 20, and the portion of the first arc segment S1 near the first grounding node 301 serves as the first radiating part 10. Optionally, the first feed node 201 is located on the side of the first arc segment S1 near the second grounding node 302, or in other words, the length of the arc segment between the first feed node 201 and the second grounding node 302 is less than the length of the arc segment between the first feed node 201 and the first grounding node 301.

[0049] As shown in Figure 1 or Figures 3a and 3b, the first radiating part 10 and the second radiating part 20 of the annular radiator 100 partially overlap, that is, the first radiating part 10 and the second radiating part 20 are arranged with the same aperture. Figure 4 shows a current distribution diagram of the antenna assembly in one embodiment, where the solid line with arrows between the first feed node 201 and the first ground node 301 represents the current distribution of the L1 band signal on the first radiating part 10, and the dashed line with arrows between the first ground node 301 and the second ground node 302 represents the current distribution of the L5 band signal on the second radiating part 20.

[0050] By setting the first radiating part 10 and the second radiating part 20 on the annular radiator 100 with the same aperture, the arc length occupied by the first radiating part 10 for transmitting the first operating frequency band signal and the second radiating part 20 for transmitting the second operating frequency band signal on the annular radiator 100 can be reduced.

[0051] In some embodiments, reducing the arc length occupied by the first radiating part 10 and the second radiating part 20 facilitates the placement of radiating parts for other operating frequency band signals in other arc segments of the ring radiator 100. Optionally, as shown in FIG3a or FIG4, the ring antenna assembly further includes a second feed node 202 and a third ground node 303 disposed in the second arc segment S2. The ring radiator 100 also includes a third radiating part 50, which includes a portion of the second arc segment S2 located between the second feed node 202 and the third ground node 303, and is used to transmit signals of a third operating frequency band. Of course, it is not limited to this; for example, the ring radiator 100 may also include a fourth radiating part for transmitting signals of a fourth operating frequency band. Providing at least a third radiating part 50 in the ring radiator 100 can improve the integration of the antenna assembly.

[0052] The third radiating part 50 is disposed on the second arc segment S2 of the annular radiator 100, as shown in Figure 3a or Figure 4. The second arc segment S2 is separated from the first arc segment S1 by the first grounding node 301 and the second grounding node 302, so that the second arc segment S2 is the arc segment of the annular radiator 100 other than the first arc segment S1. Since the arc segment length occupied by the first radiating part 10 and the second radiating part 20 is small, sufficient space is left for the placement of the third radiating part 50. For example, the spacing between the third radiating part 50 and the first radiating part 10 and the second radiating part 20 can be larger, and grounding treatment can be added to reduce the electromagnetic interference between the third radiating part 50 and the first radiating part 10 and the second radiating part 20, thereby improving the reliability of the antenna assembly.

[0053] In some implementations, 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 GNSS; the first radiating part 10 can be referred to as an L1 antenna, and the second radiating part 20 can be referred to as an L5 antenna. The frequency of the L1 band is approximately 1.6 GHz, and the frequency of the L5 band is approximately 1.2 GHz. For example, the antenna assembly receives positioning signals from the GNSS, and the electronic device can determine its location information based on the positioning signals received by the antenna assembly, and can also display the location information, for example, displaying the current location on a map based on the location information. It should be noted that the L1 and L5 bands in the embodiments of this application are merely illustrative examples of the first and second operating frequency bands; it should be understood that at least one of the first and second operating frequency bands can also be other frequency bands, such as the L2 band of the GNSS.

[0054] For example, the third operating frequency band is the Bluetooth and / or WiFi band, and the third radiating part 50 can be referred to as a Bluetooth and / or WiFi antenna. Exemplarily, the circuitry on circuit board 101 can receive signals from the third operating frequency band coupled to the third radiating part 50 via the second feed node 202, and / or the circuitry on circuit board 101 can apply signals from the third operating frequency band to the second feed node 202, allowing the third radiating part 50 to transmit signals from the third operating frequency band. Electronic devices equipped with this antenna assembly can communicate with other devices via Bluetooth and / or WiFi.

[0055] For example, Bluetooth technology plays a crucial role in electronic devices such as smartwatches. Through a Bluetooth antenna, a smartwatch can synchronize data with a smartphone or other Bluetooth-compatible devices, allowing users to view exercise data, receive notifications, and even control music playback in real time. In some embodiments, the length of the first radiating element 10 is one-quarter of the target frequency wavelength, wherein 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.

[0056] For example, when the first operating frequency band is L1 and the second operating frequency band is L5, the target frequency is greater than the center frequency of L5 and less than the center frequency of L1.

[0057] For example, the resonant frequency corresponding to the first radiating part 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.

[0058] For example, when the first operating frequency band is L1 and the second operating frequency band is L5, the equivalent antenna length corresponding to the first radiating part 10 is greater than or equal to 10 cm and less than or equal to 12 cm.

[0059] As shown in Figure 1 or Figure 3a, the first radiating element 10 and the second radiating element 20 are arranged with the same aperture. The length of the first radiating element 10 is 1 / 4 of the wavelength of the target frequency, which allows the first arc segment S1 to resonate at the target frequency f. Referring to Figure 5, the first radiating element 10 has high radiation efficiency for signals with frequencies in the first operating frequency band (such as the L1 band), and the second radiating element 20 also has high radiation efficiency (above the horizontal dashed line) for signals with frequencies in the second operating frequency band (such as the L5 band). As can be seen from Figure 5, when the first arc segment S1 resonates at the target frequency f, the first radiating element 10 and the second radiating element 20 have high antenna radiation efficiency in at least the L1 and L5 bands of the global navigation satellite system.

[0060] For clarity, please refer to Figure 6. Figure 6 shows a schematic diagram of the radiation efficiency corresponding to different signal frequencies when the resonant frequency of the first radiating part 10 is in the L1 band or the L5 band. When the resonant frequency of the first radiating part 10 is in the L5 band, the radiation efficiency of the first radiating part 10 is low for signals with frequencies in the L1 band; and when the resonant frequency of the first radiating part 10 is in the L1 band, the radiation efficiency of the first radiating part 10 is low for signals with frequencies in the L5 band. For signals from global navigation satellite systems, a significant reduction in antenna radiation efficiency is unacceptable. In this embodiment, by setting the length of the first radiating part 10 to be 1 / 4 of the target frequency wavelength, the first radiating part 10 and the second radiating part 20, which share the same aperture in the antenna assembly, both have high antenna radiation efficiency for signals from global navigation satellite systems.

[0061] For example, the target frequency can be the average of the center frequency of the L5 band and the center frequency of the L1 band.

[0062] For example, the difference between the target frequency and the center frequency of the L5 band is smaller than the difference between the target frequency and the center frequency of the L1 band. A target frequency closer to the center frequency of the L5 band, compared to a target frequency closer to the center frequency of the L1 band, can further improve the radiation efficiency of the first radiating element 10 for L5 band signals.

[0063] In some embodiments, referring to FIG4, a second grounding node 302 is provided outside the first feed node 201 of the first radiating section 10, which can affect the current distribution of L5 band signals on the second radiating section 20, for example, it can affect the efficiency and axial ratio of the second radiating section 20 in transmitting L5 band signals.

[0064] For example, by setting the distance between the first feed node 201 and the second ground node 302, the efficiency and axial ratio of the second radiating part 20 in transmitting L5 band signals can be adjusted, or the aperture of the L5 band can be tuned, for example, the axial ratio and efficiency of the global navigation satellite system antenna can be improved.

[0065] In some embodiments, as shown in FIG7a, the antenna assembly further includes a first matching circuit 30, through which the first feed node 201 is grounded. Exemplarily, as shown in FIG7b, the first matching circuit 30 includes a capacitor 301 and an inductor 302 connected in parallel.

[0066] The first matching circuit 30 can adjust the impedance of the first radiating part 10 to the signal in the first operating frequency band, thereby achieving impedance matching between the first radiating part 10 and the signal in the first operating frequency band. For example, for at least one frequency in the first operating frequency band, the equivalent impedance between the first feed node 201 and the first ground node 301 is 50 ohms, so as to at least reduce the return loss of the first radiating part 10 to the signal in the first operating frequency band.

[0067] The first matching circuit 30 can adjust the impedance of the second radiating element 20 to the second operating frequency band signal, and can also achieve impedance matching of the second radiating element 20 to the second operating frequency band signal to at least a certain extent. For example, for at least one frequency in the second operating frequency band, the equivalent impedance of the second radiating element 20 is equal to or close to 50 ohms, so as to reduce the return loss of the second radiating element 20 to the second operating frequency band signal. This can improve the overall radiation efficiency of the antenna assembly for the first and second operating frequency band signals.

[0068] Optionally, the first matching circuit 30 is a capacitive circuit, for example, the first matching circuit 30 includes a capacitor 301. Compared to not setting the first matching circuit 30 or setting the first matching circuit 30 as an inductive circuit, setting the first matching circuit 30 as a capacitive circuit allows the first radiating part 10 to be equivalent to a shorter current path for signals in the first operating frequency band, and the second radiating part 20 to be equivalent to a shorter current path for signals in the L5 frequency band. This allows for adjustment of the impedance and resonant frequency of the first radiating part 10 and the second radiating part 20, thereby improving the transmission performance of the first radiating part 10 for L1 frequency band signals and the transmission performance of the second radiating part 20 for L5 frequency band signals. For example, it can ensure that the first radiating part 10 and the second radiating part 20 have better impedance characteristics and radiation efficiency.

[0069] Optionally, the first matching circuit 30 is an inductive circuit, for example, the first matching circuit 30 includes an inductor 302. Compared to not setting the first matching circuit 30 or setting the first matching circuit 30 as a capacitive circuit, setting the first matching circuit 30 as an inductive circuit allows the first radiating part 10 to be equivalent to a longer current path for signals in the first operating frequency band, and the second radiating part 20 to be equivalent to a longer current path for signals in the L5 frequency band. This allows for adjustment of the impedance and resonant frequency of the first radiating part 10 and the second radiating part 20, thereby improving the transmission performance of the first radiating part 10 for signals in the L1 frequency band and improving the transmission performance of the second radiating part 20 for signals in the L5 frequency band, such as ensuring that the first radiating part 10 and the second radiating part 20 have better impedance characteristics and radiation efficiency.

[0070] In some embodiments, as shown in FIG8, 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 help adjust the transmission performance of the second radiating part 20 for signals in the second operating frequency band, so that the second radiating part 20 has better impedance characteristics and radiation efficiency for signals in the second operating frequency band.

[0071] For example, the second matching circuit 40 includes a capacitor and an inductor connected in parallel; the structure of the second matching circuit 40 can be compared with the structure of the first matching circuit 30 shown in FIG7b, and will not be described in detail here.

[0072] Optionally, after adjusting the equivalent impedance between the first feed node 201 and the first ground node 301 to 50 ohms for at least one frequency in the first operating frequency band via the first matching circuit 30, the distance between the first feed node 201 and the second ground node 302 can be adjusted, and / or the parameters of the second matching circuit 40 can be adjusted so that the equivalent impedance of the second radiating part 20 is 50 ohms for at least one frequency in the second operating frequency band; thereby improving the overall radiation efficiency of the antenna assembly for signals in the first and second operating frequency bands.

[0073] Optionally, the second matching circuit 40 is a capacitive circuit, for example, the second matching circuit 40 includes a capacitor. Compared to not providing the second matching circuit 40 or providing the second matching circuit 40 as an inductive circuit, providing the second matching circuit 40 as a capacitive circuit allows the second radiating section 20 to be equivalent to a shorter current path for L5 frequency band signals. This enables auxiliary adjustment of the impedance and resonant frequency of the second radiating section 20, thereby improving the transmission performance of the second radiating section 20 for L5 frequency band signals. For example, the second radiating section 20 may have better impedance characteristics and radiation efficiency.

[0074] Optionally, the second matching circuit 40 is an inductive circuit, for example, the second matching circuit 40 includes an inductor. Compared to not setting the second matching circuit 40 or setting the second matching circuit 40 as a capacitive circuit, setting the second matching circuit 40 as an inductive circuit allows the second radiating section 20 to be equivalent to a longer current path for L5 frequency band signals. This enables auxiliary adjustment of the impedance and resonant frequency of the second radiating section 20, thereby improving the transmission performance of the second radiating section 20 for L5 frequency band signals. For example, the second radiating section 20 may have better impedance characteristics and radiation efficiency.

[0075] It should be noted that the design of a Bluetooth antenna needs to take into account factors such as power consumption, signal range, communication rate, and coordination with other wireless communication modules. This application also includes a third radiator design to improve the performance of the Bluetooth antenna.

[0076] In some embodiments, as shown in FIG4, the length of the arc segment between the third ground node 303 of the third radiator and the first ground node 301 of the first and second radiators is less than the length of the arc segment between the second feed node 202 and the first ground node 301. For example, the ground node 300 of the third radiator is positioned close to the ground nodes 300 of the first and second radiators, and the feed node 200 of the third radiator (i.e., the second feed node 202) is positioned close to the feed nodes 200 of the first and second radiators (i.e., the first feed node 201). This improves the overall radiation efficiency of the antenna assembly for signals in the first, second, and third operating frequency bands and reduces mutual signal interference.

[0077] Optionally, referring to Figure 4, the annular radiator 100 further includes a fourth grounding node 304, which is located between the second feed node 202 and the second grounding node 302. As shown in Figure 4, the solid line with arrows between the second feed node 202 and the third grounding node 303 represents the current distribution of the Bluetooth signal on the third radiator 50. By setting the fourth grounding node 304 between the second feed node 202 and the second grounding node 302 of the third radiator, it helps to improve the isolation between the third radiator and the first and second radiators, for example, reducing signal interference between the signals of the Global Navigation Satellite System and the Bluetooth signal, and enabling high-performance GPS signal reception and stable and effective Bluetooth communication in smartwatches.

[0078] Optionally, the annular radiator 100 further includes a fifth grounding node 300 (not shown), located between the first grounding node 301 and the third grounding node 303. Optionally, the annular radiator 100 may include a fourth grounding node 304 and the fifth grounding node 300. Providing the fifth grounding node 300 between the third radiator and the first and second radiators helps improve the isolation between the third radiator and the first and second radiators, for example, reducing signal interference between GPS signals and Bluetooth signals, enabling high-performance GPS signal reception and stable and effective Bluetooth communication in smartwatches.

[0079] The antenna assembly provided in this application embodiment includes a ring radiator 100 and a first matching circuit 30. The ring radiator 100 includes at least a first feed node 201, a first ground node 301, and a second ground node 302. The ring radiator 100 also includes a first radiating part 10 and a second radiating part 20. The first radiating part 10 is used to transmit signals in a first operating frequency band, and the second radiating part 20 is used to transmit signals in a second operating frequency band. The first radiating part 10 includes an arc segment located between the first feed node 201 and the first ground node 301. The second radiating part 20 includes an arc segment located between the first ground node 301 and the second ground node 302. The first feed node 201 is grounded through the first matching circuit 30, which is a capacitive circuit or an inductive circuit. By setting the first radiating part 10 and the second radiating part 20 of the annular radiator 100 to share the same grounding node 300, namely the first grounding node 301, the arc length occupied by the first radiating part 10 for transmitting the first operating frequency band signal and the second radiating part 20 for transmitting the second operating frequency band signal on the annular radiator 100 can be reduced. By setting the first feed node 201 to be grounded through the first matching circuit 30, the impedance of the first radiating part 10 to the first operating frequency band signal and the impedance of the second radiating part 20 to the second operating frequency band signal can be adjusted, thereby improving the overall radiation efficiency of the antenna assembly for the first and second operating frequency band signals.

[0080] In some embodiments, the first radiating part 10 and the second radiating part 20 are disposed on the annular radiator 100 with the same aperture, which can reduce the arc length occupied by the first radiating part 10 for transmitting the first operating frequency band signal and the second radiating part 20 for transmitting the second operating frequency band signal on the annular radiator 100.

[0081] It should be noted that the reliability and accuracy of Global Navigation Satellite System (GPS) signal reception are crucial to the performance of smartwatches. To improve signal reception quality, GPS antennas often employ right-hand circular polarization (RHCP). This helps smartwatches and other electronic devices receive satellite signals from different directions and polarization angles under various motion states and angles, maximizing resistance to multipath interference and signal attenuation. Since GPS antennas require solid-line right-hand circular polarization, and only specific feed positions and specific arc segments on the ring radiator 100 have high axial ratios, antennas with strong right-hand performance have designated positions on the metal ring. Because the first radiating section 10 and the second radiating section 20 in this embodiment share a common aperture, for example, the L1 and L5 bands share a single radiating section, the L1 and L5 bands can simultaneously maintain high right-hand circular axial ratio characteristics.

[0082] In some embodiments, reducing the arc length occupied by the first radiating part 10 and the second radiating part 20 can facilitate the placement of radiating parts for other operating frequency band signals, such as Bluetooth signal radiating parts, in other arc segments of the annular radiator 100, thereby improving the integration of the antenna assembly.

[0083] Compared to related technologies where L1 and L5 band antennas are placed in different arc segments of the ring radiator 100, most of the arc segment of the ring radiator 100 is occupied by the GPS antenna, which limits the placement space of the Bluetooth antenna. For small-sized wearable devices, the Bluetooth antenna can only be placed in the arc segment of the L1 or L5 band antenna. However, since the Bluetooth and GPS antennas share the same radiating aperture, mutual interference between the Bluetooth and GPS signals often occurs. This not only increases the complexity of antenna design and debugging but may also lead to a reduction in the performance of the GPS antenna. Alternatively, the Bluetooth antenna can use other types of antennas, such as flexible printed circuit (FPC) antennas. However, if other types of Bluetooth antennas are chosen, the antenna position must be readjusted, which poses a challenge given the current limited internal space of smart wearable devices. Furthermore, the coupling effect between the modified Bluetooth antenna and the GPS antenna is usually difficult to predict and control, bringing additional uncertainties and risks to the design. The embodiments of this application can reduce the mutual interference between Bluetooth and GPS signals by arranging the Bluetooth antenna (third radiating part 50) and the GPS antenna (first radiating part 10 and second radiating part 20) at intervals in different arc segments of the annular radiator 100.

[0084] Please refer to FIG9 in conjunction with the foregoing embodiments. FIG9 is a schematic diagram of an electronic device provided in an embodiment of this application. The electronic device includes the antenna assembly of the foregoing embodiments.

[0085] For example, electronic devices can be smart wearable devices, such as smartwatches. However, they are not limited to this; for example, electronic devices can be cycling computers, mobile phones, tablets, etc.

[0086] For ease of explanation, the embodiments of this application are mainly illustrated using a smartwatch as an example.

[0087] In some embodiments, as shown in FIG10a, the electronic device includes a housing 60 and a circuit board 101 disposed within the housing 60. The housing 60 includes a bottom wall 61 and a side wall 62 (which may be referred to as a mid-frame) connected to the bottom wall 61.

[0088] Optionally, the annular radiator 100 of the antenna assembly can be disposed on the upper edge of the side wall 62, or on the inner wall of the side wall 62. The feed node 200 and ground node 300 of the annular radiator 100 can be connected to the circuit board 101 through conductive posts.

[0089] Optionally, as shown in Figures 10a and 10b, the metal sidewall 62 can also be used as the annular radiator 100, and the power supply node 200 and grounding node 300 of the metal sidewall 62 can be connected to the circuit board 101 through any conductor.

[0090] Optionally, as shown in Figure 10c, the annular radiator 100 is disposed on one side of the circuit board 101, and a metal base 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 disposed as the metal base plate 63. Of course, it is not limited to this; for example, the annular radiator 100 can be disposed between the circuit board 101 and the metal base plate 63. By providing the metal base 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 base plate 63 can generate a reverse current with the ground plane of the circuit board 101, reducing the magnetic field energy entering the human body and thus improving the radiation performance of the GPS antenna.

[0091] The specific principles and implementation methods of the electronic devices provided in this application are similar to those of the antenna components in the foregoing embodiments, and will not be repeated here.

[0092] It should be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application.

[0093] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, 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, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this invention, the first element, component, area, layer, or portion discussed below may be referred to as the second element, component, area, layer, or portion.

[0094] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0095] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0096] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the scope of the technology disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

An antenna assembly, characterized in that, The antenna assembly includes: a ring radiator, the ring radiator including at least a first feed node, a first ground node, and a second ground node; the ring radiator includes a first radiating part and a second radiating part, the first radiating part being used to transmit signals of a first operating frequency band, and the second radiating part being used to transmit signals of a second operating frequency band; the first radiating part including an arc segment located between the first feed node and the first ground node; the second radiating part including an arc segment located between the first ground node and the second ground node; and a first matching circuit, the first feed node being grounded through the first matching circuit, the first matching circuit being a capacitive circuit or an inductive circuit. The antenna assembly according to claim 1 is characterized in that, The first operating frequency band is the frequency band of the Global Navigation Satellite System, and the second operating frequency band is the frequency band of the Global Navigation Satellite System. The antenna assembly according to claim 2 is characterized in that, The length of the first radiating element is 1 / 4 of the target frequency wavelength, wherein the target frequency is greater than the center frequency of the frequency band and less than the center frequency of the frequency band. The antenna assembly according to claim 1 is characterized in that, The antenna assembly further includes a second matching circuit, through which the second grounding node is grounded. The antenna assembly according to claim 4 is characterized in that, The first matching circuit includes a capacitor and an inductor connected in parallel; and / or the second matching circuit includes a capacitor and an inductor connected in parallel. The antenna assembly according to any one of claims 1-5 is characterized in that, The length of the arc segment between the first power supply node and the first grounding node is less than the length of the arc segment between the first grounding node and the second grounding node. The antenna assembly according to any one of claims 1-5 is characterized in that, The ring radiator includes a first arc segment and a second arc segment between the first ground node and the second ground node; the first feed node is disposed in the first arc segment; the ring antenna assembly further includes a second feed node and a third ground node disposed in the second arc segment; the ring radiator further includes a third radiating part, the third radiating part including a portion of the second arc segment located between the second feed node and the third ground node; the third radiating part is used to transmit signals of a third operating frequency band. The antenna assembly according to claim 7 is characterized in that, The third operating frequency band is the Bluetooth and / or WiFi frequency band. The antenna assembly according to claim 7 is characterized in that, The length of the arc segment between the third grounding node and the first grounding node is less than the length of the arc segment between the second power supply node and the first grounding node. The antenna assembly according to claim 9 is characterized in that, The annular radiator further includes a fourth grounding node, which is located between the second feed node and the second grounding node; and / or the annular radiator further includes a fifth grounding node, which is located between the first grounding node and the third grounding node. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-10.

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