Antenna assembly and electronic device

Abstract

The application relates to an antenna assembly and an electronic device, and relates to the technical field of antennas. The antenna assembly comprises a first feed source, a second feed source, a third feed source, a first radiator, a second radiator and a third radiator; the first radiator is provided with a first feeding point, the first feed source excites the first radiator, the second radiator and the third radiator to support a first frequency band through the first feeding point, and the first feed source also excites the first radiator to support a second frequency band through the first feeding point; the second radiator is provided with a second grounding point and a second feeding point, the second grounding point is arranged away from a gap and is connected with a common ground, the second feeding point is connected with the second feed source and the third feed source respectively, the second feed source excites the second radiator and the first radiator to support a third frequency band and a fourth frequency band through the second feeding point, and the third feed source excites the second radiator to support a fifth frequency band through the second feeding point. The application improves the antenna integration and saves space by sharing the radiators.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and in particular to an antenna assembly and electronic device. Background Technology

[0002] With the development of antenna technology, electronic devices with communication functions (such as mobile phones and tablets) are becoming increasingly widespread and their functions are becoming more and more powerful. Electronic devices typically include antenna components to enable their communication functions.

[0003] Currently, electronic devices support an increasing number of frequency bands, requiring an ever-growing number of antennas. However, the space available for antenna placement within electronic devices is limited. Summary of the Invention

[0004] This application provides an antenna assembly and electronic device that improves antenna integration and saves space by sharing a radiator.

[0005] In a first aspect, embodiments of this application provide an antenna assembly, including: a first feed source, a second feed source, a third feed source, a first radiator, a second radiator, and a third radiator, wherein a gap is provided between the first radiator and the second radiator, and the first radiator and the third radiator are respectively connected to a common ground through a first grounding point; wherein...

[0006] The first radiator is provided with a first feed point. The first feed source excites the first radiator, the second radiator and the third radiator to jointly support the first frequency band through the first feed point. The first feed source also excites the first radiator to support the second frequency band through the first feed point.

[0007] The second radiator is provided with a second grounding point and a second feed point. The second grounding point is located away from the gap and connected to the common ground. The second feed point is connected to the second feed source and the third feed source respectively. The second feed source excites the second radiator and the first radiator to jointly support the third frequency band and the fourth frequency band through the second feed point. The third feed source excites the second radiator to support the fifth frequency band through the second feed point.

[0008] Secondly, embodiments of this application provide an electronic device, which includes the antenna assembly as described above.

[0009] The antenna assembly and electronic device provided in this application include a first feed source, a second feed source, a third feed source, a first radiator, a second radiator, and a third radiator. A gap is provided between the first radiator and the second radiator. The first radiator and the third radiator are respectively connected to a common ground through a first grounding point. The first radiator has a first feed point. The first feed source excites the first radiator, the second radiator, and the third radiator to jointly support a first frequency band through the first feed point. The first feed source also excites the first radiator to support a second frequency band through the first feed point. The second radiator has a second grounding point and a second feed point. The second grounding point is located away from the gap and connected to the common ground. The second feed point is connected to both the second feed source and the third feed source. The second feed source excites the second radiator and the first radiator to jointly support a third and a fourth frequency band through the second feed point. The third feed source excites the second radiator to support a fifth frequency band through the second feed point. The third feed source excites the second radiator to support the fifth frequency band through the second feed point. Based on this, in the antenna assembly provided in this application embodiment, the first radiator can support a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band; the second radiator can support the first frequency band, the third frequency band, the fourth frequency band, and a fifth frequency band; and the third radiator can support the first frequency band. Thus, by sharing a radiator, multiple different frequency bands are integrated, improving the antenna's integration density, saving space, and facilitating miniaturized antenna design. This allows for more space to be reserved for other antenna designs in electronic devices. Furthermore, the second and third radiators act as parasitic radiators for the first frequency band. The second radiator helps improve the passive efficiency of the first frequency band antenna; the third radiator has a guiding effect on the radiated energy direction of the first frequency band, helping to improve the radiation pattern of the first frequency band and increase the radiation efficiency bandwidth of the first frequency band antenna; thereby contributing to improved antenna performance in the first frequency band.

[0010] Thirdly, embodiments of this application provide an electronic device, which includes a first feed source, a first radiator, a second radiator, a third radiator, a ground plane, and a first matching circuit. A gap is provided between the first radiator and the second radiator. The first radiator and the third radiator are respectively connected to a common ground through a first grounding point. The third radiator is connected to the common ground through the first matching circuit.

[0011] The first radiator is provided with a first feed point. The first feed source excites the first radiator, the second radiator and the third radiator to jointly support the first frequency band through the first feed point. The first feed source also excites the first radiator to support the second frequency band through the first feed point.

[0012] The first matching circuit is used to adjust the resonant current distribution of the first frequency band on the floor.

[0013] The electronic device provided in this application includes a first feed source, a first radiator, a second radiator, a third radiator, a ground plane, and a first matching circuit. A gap is provided between the first and second radiators. The first and third radiators are respectively connected to a common ground through a first grounding point. The third radiator is connected to the common ground through the first matching circuit. The first radiator has a first feed point. The first feed source excites the first, second, and third radiators through the first feed point to jointly support a first frequency band. The first feed source also excites the first radiator through the first feed point to support a second frequency band. The first matching circuit is used to adjust the distribution of the resonant current of the first frequency band on the ground plane. This electronic device can support both the first and second frequency bands by sharing a first radiator, improving antenna integration and saving space. Furthermore, the second and third radiators act as parasitic radiators for the first frequency band; the second radiator helps improve the passive efficiency of the first frequency band antenna. The third radiator guides the energy radiation direction of the first frequency band antenna, and a first matching circuit is loaded on the third radiator to adjust the resonant current distribution of the first frequency band on the ground, thereby adjusting the radiator pattern of the first frequency band and improving the radiation efficiency bandwidth of the first frequency band antenna. Thus, the communication performance of the electronic device supporting the first frequency band is improved. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an antenna assembly according to one embodiment;

[0016] Figure 2 This is a schematic diagram of the antenna assembly according to another embodiment;

[0017] Figure 3 This is a schematic diagram of the structure of a first matching circuit according to an embodiment;

[0018] Figure 4 This is a schematic diagram of the structure of a second matching circuit according to one embodiment;

[0019] Figure 5 This is a schematic diagram of the current distribution in the first frequency band of an embodiment;

[0020] Figure 6 This is a simulation diagram of the current distribution in the first frequency band of an embodiment;

[0021] Figure 7A simulation diagram of the current distribution in the first frequency band of another embodiment;

[0022] Figure 8 This is a schematic diagram of the current distribution in the second frequency band of one embodiment;

[0023] Figure 9 This is a simulation diagram of the current distribution in the second frequency band of an embodiment;

[0024] Figure 10 This is a schematic diagram of the current distribution in the third frequency band of one embodiment;

[0025] Figure 11 This is a simulation diagram of the current distribution in the third frequency band of an embodiment;

[0026] Figure 12 A simulation diagram of the current distribution in the third frequency band of another embodiment;

[0027] Figure 13 This is a simulation diagram of the current distribution in the third frequency band of yet another embodiment;

[0028] Figure 14 This is a schematic diagram of the current distribution in the fourth frequency band of an embodiment;

[0029] Figure 15 This is a simulation diagram of the current distribution in the fourth frequency band of an embodiment;

[0030] Figure 16 This is a simulation diagram of the current distribution in the fourth frequency band of another embodiment;

[0031] Figure 17 This is a schematic diagram of the current distribution in the fifth frequency band of one embodiment;

[0032] Figure 18 This is a schematic diagram of the structure of an electronic device according to an embodiment;

[0033] Figure 19 This is a schematic diagram of the structure of an electronic device according to another embodiment;

[0034] Figure 20a A simulation diagram of the current distribution before the resonant frequency of the first matching circuit in one embodiment, taken in a first frequency band.

[0035] Figure 20b for Figure 20a A grayscale diagram;

[0036] Figure 21a This is a simulation diagram of the current distribution after the resonant frequency of the first matching circuit in one embodiment, in the first frequency band.

[0037] Figure 21b for Figure 21a A grayscale diagram;

[0038] Figure 22 The radiation pattern of the resonant frequency of the first matching circuit in one embodiment before the first frequency band;

[0039] Figure 23 The radiation pattern of the resonant frequency of the first matching circuit in one embodiment after the first frequency band;

[0040] Figure 24 This is a schematic diagram of the S-curve of an antenna assembly in an electronic device according to an embodiment;

[0041] Figure 25 This is a schematic diagram of the efficiency curve of an antenna assembly in an electronic device according to an embodiment;

[0042] Figure 26a A 3D radiation pattern simulated when the antenna of an electronic device operates in the GPS L5 band, according to one embodiment.

[0043] Figure 26b for Figure 26a A grayscale diagram;

[0044] Figure 27 The percentage of upper hemisphere radiation efficiency simulated when the antenna in an electronic device operates in the GPS L5 band, as shown in one embodiment.

[0045] Figure 28 An efficiency comparison graph of an electronic device with and without a second matching circuit loaded in a second radiator, as shown in one embodiment;

[0046] Figure 29 An example of an electronic device loads a first matching circuit on a second radiator. The first matching circuit consists of a 1.8pF capacitor and a 50-ohm resistor. The GPS L1 efficiency comparison curve is shown.

[0047] Figure 30a A simulated 3D radiation pattern of the GPS L1 antenna of an electronic device in one embodiment when a third radiator is loaded with 50 ohms;

[0048] Figure 30b for Figure 30a A grayscale diagram;

[0049] Figure 31 The upper half percentage of the GPS L1 antenna simulation for an electronic device in one embodiment when a third radiator is loaded with 50 ohms;

[0050] Figure 32a A simulated 3D radiation pattern of the GPS L1 antenna for an electronic device in one embodiment, with a 1.8pF capacitor loaded on the third radiator;

[0051] Figure 32b for Figure 32a A grayscale diagram;

[0052] Figure 33 The simulation of the upper half percentage of the GPS L1 antenna in an electronic device according to one embodiment, when a 1.8pF capacitor is loaded on the third radiator;

[0053] Figure 34 This is a schematic diagram of the structure of an electronic device according to yet another embodiment.

[0054] Explanation of reference numerals in the attached figures:

[0055] 11. First feed source; 12. Second feed source; 13. Third feed source; 21. First radiator; 22. Second radiator; 23. Third radiator; 31. First matching circuit; 32. Second matching circuit; 40. Floor; 401. Top edge; 402. Bottom edge; 403. First side edge; 404. Second side edge; 50. Mobile phone; 51. Memory; 511. Operating system; 512. Communication module; 513. GPS module; 52. Processing circuit; 53. I / O subsystem; 531. Button; 54. Antenna device; 55. Signal line. Detailed Implementation

[0056] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0058] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first radiator may be referred to as a second radiator, and similarly, a second radiator may be referred to as a first radiator. Both the first radiator and the second radiator are radiators, but they are not the same radiator.

[0059] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0060] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0061] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0062] The antenna assembly provided in this application embodiment can be applied to electronic devices with communication functions. These electronic devices can be handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (e.g., mobile phones), mobile stations (MS), etc.

[0063] In some embodiments, such as Figure 1 As shown, an antenna assembly is provided, including: a first feed 11, a second feed 12, a third feed 13, a first radiator 21, a second radiator 22, and a third radiator 23. A gap d is provided between the first radiator 21 and the second radiator 22. The first radiator 21 and the second radiator 22 can be coupled to each other through the gap d. The width of the gap d can be determined according to actual conditions and is not limited here. The first radiator 21 and the third radiator 23 are respectively connected to a common ground GND through a first grounding point G1. Specifically, both the first radiator 21 and the third radiator 23 are connected to the first grounding point G1, and the first grounding point G1 is connected to the common ground GND.

[0064] The first radiator 21 is provided with a first feed point S1. The first feed point S1 is connected to the first feed source 11. The first feed source 11 excites the first radiator 21, the second radiator 22, and the third radiator 23 through the first feed point S1 to jointly support the first frequency band. The first feed source 11 also excites the first radiator 21 through the first feed point S1 to support the second frequency band.

[0065] The second radiator 22 has a second grounding point G2 and a second feed point. The second grounding point G2 is located away from the gap d and is connected to the common ground GND. The second feed point is located close to the gap d and is connected to both the second feed source 12 and the third feed source 13. The second feed source 12 excites the second radiator 22 and the first radiator 21 through the second feed point to jointly support the third and fourth frequency bands. Specifically, the second feed source 12 excites the second radiator 22 and the first radiator 21 through the second feed point to jointly support the third frequency band, and also excites the second radiator 22 and the first radiator 21 through the second feed point to jointly support the fourth frequency band. The third feed source 13 excites the second radiator 22 through the second feed point to support the fifth frequency band.

[0066] The first, second, third, fourth, and fifth frequency bands are all different. For example, the frequency ranges covered by the first, second, third, fourth, and fifth frequency bands are all different.

[0067] In this embodiment, the first feed 11, the second feed 12, and the third feed 13 can be devices for generating radio frequency (RF) signals. The first feed 11 can be used to generate RF signals in a first frequency band to enable the antenna assembly to support the first frequency band. The first feed 11 can also be used to generate RF signals in a second frequency band to enable the antenna assembly to support the second frequency band. The second feed 12 can be used to generate RF signals in a third frequency band to enable the antenna assembly to support the third frequency band. The second feed 12 can also be used to generate RF signals in a fourth frequency band to enable the antenna assembly to support the fourth frequency band. The third feed 13 can be used to generate RF signals in a fifth frequency band to enable the antenna assembly to support the fifth frequency band. The RF signals in the first, second, third, fourth, and fifth frequency bands are all different.

[0068] It should be noted that the first radiator 21, as the main radiator of the first and second frequency bands, primarily covers the first and second frequency bands. There is mutual coupling between the first radiator 21 and the second radiator 22. The second radiator 22 serves as the main radiator of the third, fourth, and fifth frequency bands, while part of the first radiator 21 acts as a secondary radiator for the third and fourth frequency bands. Specifically, the second radiator 22 acts as the common main radiator for the third, fourth, and fifth frequency bands, simultaneously covering these bands. This achieves coverage of multiple operating frequency bands without adding antenna structures such as metal frames, thus improving the integration of electronic devices. Furthermore, the third radiator 23, as a reverse parasitic radiator of the first frequency band, has a guiding effect on the reverse energy radiation of the first frequency band, helping to improve the radiation pattern of the first frequency band and enhance its antenna performance. For example, taking the application of an antenna assembly in an electronic device, with the first frequency band being the GPS L1 band, the energy radiation direction of the first frequency band can be adjusted by the third radiator 23, so that the radiation pattern of the first frequency band has a larger proportion in the upper hemisphere than in the lower hemisphere. That is, the radiation energy of the first frequency band is concentrated in the upper hemisphere, thereby improving the performance of the antenna assembly in supporting the GPS L1 band and thus improving the communication of the electronic device.

[0069] It should be noted that the fact that the first radiator 21, the second radiator 22, and the third radiator 23 jointly support the first frequency band can be understood as follows: the first radiator 21, the second radiator 22, and the third radiator 23 can be used together to receive radio frequency signals of the first frequency band, or the first radiator 21, the second radiator 22, and the third radiator 23 can be used together to transmit radio frequency signals of the first frequency band, or the first radiator 21 can be used together to receive and transmit radio frequency signals of the first frequency band. Similarly, the fact that the first radiator 21 supports the second frequency band can be understood as follows: the first radiator 21 can be used to receive radio frequency signals of the second frequency band, or the first radiator 21 can be used to transmit radio frequency signals of the second frequency band, or the first radiator 21 can be used to receive and transmit radio frequency signals of the second frequency band.

[0070] The second radiator 22 and the first radiator 21 jointly supporting the third frequency band can be understood as follows: the second radiator 22 and the first radiator 21 can be used together to receive radio frequency signals of the third frequency band, or the second radiator 22 and the first radiator 21 can be used together to transmit radio frequency signals of the third frequency band, or the second radiator 22 and the first radiator 21 can be used together to receive and transmit radio frequency signals of the third frequency band. The second feed point excites the second radiator 22 and the first radiator 21 to jointly support the fourth frequency band; the second radiator 22 and the first radiator 21 can be used together to receive radio frequency signals of the fourth frequency band, or the second radiator 22 and the first radiator 21 can be used together to transmit radio frequency signals of the fourth frequency band, or the second radiator 22 and the first radiator 21 can be used together to receive and transmit radio frequency signals of the fourth frequency band.

[0071] The second radiator 22 supporting the fifth frequency band can be understood as the second radiator 22 being able to receive radio frequency signals of the fifth frequency band, or the second radiator 22 being able to transmit radio frequency signals of the fifth frequency band, or the second radiator 22 being able to receive and transmit radio frequency signals of the fifth frequency band.

[0072] The first radiator 21 can be an antenna radiator in the form of FPC (Flexible Printed Circuit), LDS (Laser Direct Structure), PDS (Printing Direct Structure), etc., or an antenna radiator in the form of MDA (In-Mold Design), or an antenna radiator formed by the conductive structure of the electronic device, such as a metal frame or metal traces on a circuit board. Similarly, the second radiator 22 can also be an antenna radiator in the form of FPC, LDS, PDS, MDA, etc., or an antenna radiator formed by the conductive structure of the electronic device or metal traces on a circuit board. Similarly, the third radiator 23 can also be an antenna radiator in the form of FPC, LDS, PDS, MDA, etc., or an antenna radiator formed by the conductive structure of the electronic device or metal traces on a circuit board. For example, the first radiator 21, the second radiator 22, and the third radiator 23 can all be the metal frame of the electronic device. It should be noted that the shape and size of the first radiator 21, the second radiator 22, and the third radiator 23 can be set according to actual needs and are not limited here.

[0073] The antenna assembly provided in this application supports a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band through a first radiator 21, supports the first, third, fourth, and fifth frequency bands through a second radiator 22, and supports the first frequency band through a third radiator 23. Thus, by sharing radiators, multiple different frequency bands are integrated, improving the antenna's integration, saving space, and facilitating miniaturized antenna design. This allows for more space to be reserved for other antenna designs in electronic devices. For example, the first radiator 21, the second radiator 22, and the third radiator 23 in the antenna assembly are all metal frames in electronic devices, thus improving the space utilization of the metal frame and contributing to increased integration of the electronic device. Furthermore, the second radiator 22 and the third radiator 23 act as parasitic radiators for the first frequency band. The second radiator 22 helps improve the passive efficiency of the first frequency band antenna; the third radiator 23 has a guiding effect on the radiated energy direction of the first frequency band, helping to improve the radiation pattern of the first frequency band and increase the radiation efficiency bandwidth of the first frequency band antenna; thereby contributing to improved antenna performance in the first frequency band.

[0074] Please continue reading. Figure 1 In some embodiments, the first frequency band includes the GPS L1 band, with a center frequency of 1.575 GHz; the second frequency band includes the WiFi 2.4G band, with a range of 2.4 GHz to 2.5 GHz; the third frequency band includes the WiFi 5G band, with a range of 5.1 GHz to 5.85 GHz; the fourth frequency band includes the SUB 6G band, for example, the fourth frequency band includes the N78 band, with a range of 3.3 GHz to 3.8 GHz; and the fifth frequency band includes the GPS L5 band, with a center frequency of 1.17 GHz.

[0075] The first feed 11 can generate radio frequency signals in the GPS L1 band and the WiFi 2.4G band. The second feed 12 can generate radio frequency signals in the WiFi 5G band and the SUB 6G band. The third feed 13 can generate radio frequency signals in the GPS L5 band.

[0076] In the application, the first feed source 11 can generate a GPS L1 band radio frequency signal, which is transmitted to the first radiator 21 through the first feed point S1, stimulating the first radiator 21, the second radiator 22, and the third radiator 23 to jointly support the GPS L1 band. The first radiator 21 acts as the main radiator for the GPS L1 band, while the second radiator 22 and the third radiator 23 act as parasitic radiators for the GPS L1 band. The first feed source 11 can also generate a WiFi 2.4G band radio frequency signal, which is transmitted to the first radiator 21 through the first feed point S1, stimulating the first radiator 21 to support the WiFi 2.4G band radio frequency signal. The second feed source 12 can generate a WiFi 5G band radio frequency signal, which is transmitted to the second radiator 22 through the second feed point, stimulating the second radiator 22 and the first radiator 21 to jointly support the WiFi 5G band. The second radiator 22 acts as the main radiator for the WiFi 5G band, while the first radiator 21 acts as a parasitic radiator for the WiFi 5G band. The second feed source 12 can also generate RF signals in the SUB 6G band and transmit them to the second radiator 22 through the second feed point, exciting the second radiator 22 and the first radiator 21 to jointly support the SUB 6G band, such as the N78 band. The second radiator 22 acts as the main radiator of the SUB 6G band, and the first radiator 21 acts as a parasitic radiator of the SUB 6G band. The third feed source 13 can generate RF signals in the GPS L5 band and transmit them to the second radiator 22 through the second feed point, exciting the second radiator 22 to support the GPS L5 band.

[0077] The antenna assembly provided in this application embodiment, by sharing the first radiator 21, the second radiator 22 and the third radiator 23, can support multiple different frequency bands, namely the GPS L1 band, the WiFi 2.4G band, the WiFi 5G band, the SUB 6G band and the GPS L5 band, thereby improving the integration of the antenna and saving space.

[0078] like Figure 2 As shown, in some embodiments, the third radiator 23 is provided with a first connection point M1, and the antenna assembly further includes a first matching circuit 31. The second end of the first matching circuit 31 is connected to the first connection point M1, and the second end of the first matching circuit 31 is connected to the common ground GND. The first matching circuit 31 is used to adjust the length of the third radiator 23.

[0079] It is understood that the third radiator 23 is intended to adjust the radiation pattern of the first frequency band. Due to limited layout space in electronic devices, in this embodiment, by loading the first matching circuit 31 onto the third radiator 23, the length or equivalent length of the third radiator 23 can be effectively shortened, thereby reducing the size of the third radiator 23, and consequently reducing the space occupied by the antenna and improving its performance.

[0080] Please continue reading. Figure 2 In some embodiments, the first matching circuit 31 can also be used to adjust the radiation pattern of the first frequency band. Taking the antenna assembly applied to an electronic device, with the first frequency band being the GPS L1 band as an example, the third radiator 23 is grounded through the first matching circuit 31, which can further adjust the energy radiation direction of the first frequency band, making the radiation pattern of the first frequency band more concentrated in the upper hemisphere than in the lower hemisphere. That is, the radiated energy of the first frequency band is concentrated in the upper hemisphere, thereby improving the performance of the antenna assembly in supporting the GPS L1 band, and thus improving the communication capability of the electronic device. Wherein, when the electronic device includes a ground plane 40 connected to the common ground GND, the first matching circuit 31 can adjust the current distribution of the resonant current of the first frequency band on the ground plane 40. Specifically, the first matching circuit 31 is loaded on the third radiator 23, so that the resonant current of the GPS L1 band is concentrated at the top of the ground plane 40, the resonant current of the GPS L1 band is suppressed to be concentrated at the bottom of the ground plane 40, and the transverse resonant current of the first band on the ground plane 40 is excited more, thereby adjusting the radiation pattern of the GPS L1 band, directing the radiated energy from the lower half to the upper hemisphere, and increasing the proportion of the upper hemisphere in the radiation pattern of the GPS L1 band of the antenna assembly.

[0081] Please continue reading. Figure 2 In some embodiments, the resonant frequency f of the first matching circuit 31 M1 Less than the center frequency f1 of the first frequency band, i.e., f M1 <f1. That is, the resonant frequency of the first matching circuit 31 is set before the center frequency of the first frequency band.

[0082] For example, the first frequency band includes the GPS L1 band, whose center frequency is 1.575 GHz; correspondingly, the resonant frequency of the first matching circuit 31 is less than 1.575 GHz. For example, the resonant frequency of the first matching circuit 31 is greater than or equal to 1.4 GHz and less than 1.575 GHz. Specifically, the resonant frequency of the first matching circuit 31 can be 1.4 GHz, 1.45 GHz, 1.5 GHz, 1.55 GHz, or other values ​​greater than or equal to 1.4 GHz and less than 1.575 GHz. Thus, the resonant frequency of the first matching circuit 31 is less than the center frequency of the first frequency band, meaning the center frequency of the first matching circuit 31 is set before the center frequency of the first frequency band. This allows adjustment of the radiation pattern of the first frequency band, improving the antenna's performance in supporting the first frequency band.

[0083] Taking the first frequency band as the GPS L1 band and the antenna assembly applied to an electronic device including the floor 40 as an example, the center frequency of the first matching circuit 31 is set before the center frequency of the GPS L1 band, i.e., 1.575GHz. For example, setting the center frequency of the first matching circuit 31 to 1.4GHz can concentrate the resonant current of the GPS L1 band in the area near the top of the floor 40, suppress the area near the bottom, and excite more lateral current, thereby directing the radiated energy of the GPS L1 band from the lower half to the upper hemisphere, increasing the proportion of the upper hemisphere in the radiation pattern of the GPS L1 band of the antenna assembly.

[0084] like Figure 3 As shown, in some embodiments, the first matching circuit 31 includes at least one lumped device. A first terminal of the lumped device is connected to a first connection point M1, and a second terminal of the lumped device is connected to a common ground GND. The lumped device may include at least one of a capacitor and an inductor.

[0085] For example, the first matching circuit 31 includes a second capacitor C2, with its first end connected to the first connection point M1 and its second end also connected to the first connection point M1. Thus, the third radiator 23 can adjust its equivalent length by loading a capacitor, thereby reducing its length while ensuring that the third radiator 23 adjusts the radiation pattern of the first frequency band.

[0086] Please continue reading. Figure 3 In some embodiments, the first frequency band includes the GPS L1 band, and the first matching circuit 31 includes a second capacitor C2, wherein the capacitance value of the second capacitor C2 ranges from 1.5pF to 2.2pF. For example, the capacitance value of the second capacitor C2 can be 1.5pF, 1.6pF, 1.7pF, 1.8pF, 1.9pF, 2pF, 2.1pF, and 2.2pF, or other values ​​between 1.5pF and 2.2pF, without further limitation here.

[0087] It is understood that the first matching circuit 31 is intended to adjust the length of the third radiator 23 and the radiation pattern of the first frequency band. In application, the specific parameters of the lumped devices in the first matching circuit 31 can be set according to actual needs, such as the radiation pattern of the first frequency band and the length of the third radiator 23, etc., without making too many restrictions here.

[0088] It should be noted that the above is only an illustrative example, and the first matching circuit 31 may also include a second inductor; or, the first matching circuit 31 may include a second capacitor C2 and a second inductor, wherein the first end of the second capacitor C2 is connected to the first connection point M1, the second end of the second capacitor C2 is connected to the first end of the second inductor, and the second end of the second inductor is connected to the common ground GND. In applications, the specific structure of the first matching circuit 31 can be selected according to the actual scenario, and no further limitations are imposed here.

[0089] Please continue reading. Figure 1 and Figure 2 In some embodiments, the length of the third radiator 23 is greater than the length of the first radiator 21. For example, the length of the third radiator 23 is the sum of the length of the first radiator 21 and a preset length value, such as 5 mm. In another example, the length of the third radiator 23 ranges from 8 mm to 16 mm. For example, the length of the third radiator 23 can be 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, or 16 mm, or any other value between 8 mm and 16 mm. For example, if the first frequency band includes the GPS L1 band, the length of the third radiator 23 is 8.5 mm. The antenna assembly of this application embodiment, by setting a third radiator 23 and setting the length of the third radiator 23 to be greater than the length of the first radiator 21, can realize the adjustment of the radiation pattern of the first frequency band, such as the GPS L1 frequency band, so as to improve the performance of the antenna supporting the first frequency band.

[0090] It should be noted that the length of the third radiator 23 can be set according to factors such as the length of the first radiator 21, the first frequency band range supported by the third radiator 23, the layout space of the electronic device, and the parameters of the first matching circuit 31, and is not specifically limited here.

[0091] Please continue reading. Figure 2 In some embodiments, the antenna assembly further includes a second matching circuit 32, and the second radiator 22 has a second connection point M2. A first terminal of the second matching circuit 32 is connected to the second connection point M2, and a second terminal of the second matching circuit 32 is connected to a common ground (GND). The first matching circuit 31 is inductive in the third and fourth frequency bands and capacitive in the fifth frequency band. For example, the third frequency band includes the WiFi 5G band, the fourth frequency band includes the SUB 6G band (such as the N78 band), and the fifth frequency band includes the GPS L5 band; correspondingly, the first matching circuit 31 is inductive in the WiFi 5G and SUB 6G bands and capacitive in the GPS L5 band (such as the N78 band).

[0092] In this embodiment, the second matching circuit 32 is equivalent to a large inductor connected in parallel to ground in the third frequency band (e.g., WiFi 5G band) and the fourth frequency band (e.g., N78 band), and equivalent to a small capacitor connected in parallel to ground in the fifth frequency band (e.g., GPS L5 band). Therefore, it has little impact on the resonance of the third, fourth, and fifth frequency bands (e.g., WiFi 5G band, N78 band, and GPS L5 band), and enhances the coupling effect between the second radiator 22 and the first radiator 21, which helps to improve the passive efficiency of the first frequency band antenna.

[0093] Please continue reading. Figure 2 In some embodiments, the resonant frequency f of the second matching circuit 32 M2 The resonant frequency of the second matching circuit 32 is greater than the center frequency f1 of the first frequency band. That is, the resonant frequency of the second matching circuit 32 is set after the center frequency of the first frequency, f1. M2 >f1.

[0094] For example, the first frequency band includes the GPS L1 band, whose center frequency is 1.575 GHz; correspondingly, the resonant frequency of the second matching circuit 32 is greater than 1.575 GHz. For example, the resonant frequency of the second matching circuit 32 can be 1.58 GHz, 1.59 GHz, 1.6 GHz, 1.61 GHz, 1.62 GHz, 1.63 GHz, 1.64 GHz, 1.65 GHz, 1.66 GHz, 1.67 GHz, 1.68 GHz, 1.69 GHz, 1.7 GHz, 1.71 GHz, 1.72 GHz, 1.73 GHz, 1.74 GHz, 1.75 GHz, or other values ​​greater than 1.575 GHz.

[0095] Taking the first frequency band as the GPS L1 band as an example, when f M2 When f > f1, the current phase of the second radiator 22 leads by 90°. At this time, at the center frequency of the first frequency band, such as the GPS L1 frequency point, the current of the second radiator 22 is distributed in the same direction as the current of the first radiator 21, which can enhance the radiation efficiency of the first radiator 21 at the GPS L1 frequency point. When f M2 When the frequency is less than f1, the second radiator 22 supports a resonant current phase lag of 90° in the first frequency band. At this time, at the frequency point GPS L1, the resonant current distribution of the second radiator 22 and the first radiator 21 supporting the first frequency band is opposite, forming an efficiency dip and reducing the efficiency of the GPS L1 frequency band. Therefore, in this embodiment, setting the resonant frequency of the second matching circuit 32 to be after the center frequency of the first frequency and close to the center frequency of the first frequency band, such as at the GPS L1 position, can improve the passive efficiency of the first frequency band antenna.

[0096] like Figure 4As shown, in some embodiments, the second matching circuit 32 includes a first inductor L1 and a first capacitor C1 connected in series. The first end of the first inductor L1 is connected to the second connection point M2, and the second end of the first inductor L1 is connected to the first end of the first capacitor C1. The second end of the first capacitor C1 is connected to the common ground GND. The second matching circuit 32 forms an LC bandpass filter through the first inductor L1 and the first capacitor C1. The resonant frequency of the second matching circuit 32 is... Where L1 represents the inductance value of the first inductor L1, and C1 represents the capacitance value of the first capacitor C1. Thus, by connecting the first inductor L1 and the first capacitor C1 in series, the passive efficiency of the first frequency band can be improved.

[0097] Please continue reading. Figure 4 In some embodiments, the resonant frequency of the second matching circuit 32 is greater than the center frequency of the first frequency band, which includes the GPS L1 frequency band. The inductance value of the first inductor L1 ranges from 12nH to 20nH, and the capacitance value of the first capacitor C1 ranges from 0.3pF to 0.7pF. For example, the inductance value of the first inductor L1 can be 12nH, 13nH, 14nH, 15nH, 16nH, 17nH, 18nH, 19nH, or 20nH, or any other value between 12nH and 20nH; the capacitance value of the first capacitor C1 can be 0.3pF, 0.4pF, 0.5pF, 0.6pF, or 0.7pF.

[0098] It should be noted that the specific values ​​of the first inductor L1 and the first capacitor C1 can be set according to the resonant frequency of the first matching circuit 31 and its impact on the third, fourth, and fifth frequency bands. For example, the inductance value of the first inductor L1 is 18nH, the capacitance value of the first capacitor C1 is 0.5pF, and the resonant frequency of the first matching circuit 31 is 1.72GHz. Based on this, the first matching circuit 31 is equivalent to a large parallel inductor in the WiFi 5G band and the SUB 6G band (such as the N78 band), with a relatively small impact on these bands. Furthermore, the first matching circuit 31 is equivalent to a small parallel capacitor in the GPS L5 band, with a relatively small impact on this band. Thus, while improving the passive efficiency of the GPS L1 band, the efficiency of the WiFi 5G band, the SUB 6G band (such as the N78 band), and the GPS L5 band is maintained.

[0099] like Figures 5 to 7In some embodiments, the radio frequency signal of the first frequency band provided by the first feed source 11 excites the first radiator 21 to operate in a first resonant mode through the first feed point S1, and excites the first radiator 21, a portion of the second radiator 22, and the third radiator 23 to jointly operate in a second resonant mode to support the first frequency band. Specifically, under the excitation of the radio frequency signal of the first frequency band, the first radiator 21 can operate in the first resonant mode to support the transmission and reception of the radio frequency signal of the first frequency band, and the first radiator 21, a portion of the second radiator 22, and the third radiator 23 can operate in the second resonant mode to support the transmission and reception of the radio frequency signal of the first frequency band.

[0100] The first resonant mode is the quarter-wavelength mode of the IFA (Inverted-F antenna) antenna of the first radiator 21, corresponding to the end of the first radiator 21 near the gap d, from the first grounding point G1 to the end of the first radiator 21 near the gap d. The direction of the resonant current distribution in the first frequency band on the first radiator 21 is from the first grounding point G1 to the end of the first radiator 21 near the gap d, with the first grounding point G1 having a large current and the end of the first radiator 21 near the gap d having a small current.

[0101] The second resonant mode comprises half-wavelength modes: the portion of the second radiator 22 from the second connection point M2 to the end of the second radiator 22 near the gap d; the portion of the first radiator 21 from the end of the first radiator 21 near the gap d to the first ground point G1; and the portion of the third radiator 23 from the first ground point G1 to the end of the third radiator 23 away from the first ground point G1. The second connection point M2 is the connection point between the second matching circuit 32 and the second radiator 22. The resonant current distribution of the second frequency band on the second radiator 22 flows from the second connection point M2 to the end of the second radiator 22 near the gap d. The resonant current distribution of the second frequency band on the first radiator 21 and the third radiator 23 flows from the first end of the first radiator 21 near the gap d to the end of the third radiator 23 away from the first ground point G1. The parasitic current of the second frequency band on the second radiator 22 is in the same direction as the resonant current distribution on the first radiator 21.

[0102] like Figures 5 to 7As shown, in some embodiments, the first frequency band includes the GPS L1 frequency band; correspondingly, under the excitation of the radio frequency signal of the GPS L1 frequency band, the first radiator 21 operates in the IFA antenna 1 / 4 wavelength mode to support the transmission and reception of the radio frequency signal of the GPS L1 frequency band, and the current distribution of the GPS L1 frequency band flows from the first ground point G1 to the end of the first radiator 21 near the gap d; under the excitation of the radio frequency signal of the GPS L1 frequency band, the first radiator 21, part of the second radiator 22 and the third radiator 23 jointly operate in the 1 / 2 wavelength mode to jointly support the transmission and reception of the radio frequency signal of the GPS L1 frequency band, and the current distribution of the GPS L1 frequency band flows from the second connection point M2 to the end of the second radiator 22 near the gap d, and from the end of the first radiator 21 near the gap d to the end of the third radiator 23 away from the first ground point G1.

[0103] like Figure 8 and Figure 9 In some embodiments, the second-frequency radio frequency signal provided by the first feed source 11 excites a portion of the first radiator 21 to operate in a third resonant mode through the first feed point S1 to support the second frequency band. Specifically, under the excitation of the second-frequency radio frequency signal, a portion of the first radiator 21 can operate in the third resonant mode to support the transmission and reception of the second-frequency radio frequency signal. The third resonant mode is a quarter-wavelength mode of the portion of the first radiator 21 corresponding to the end of the first radiator 21 near the gap d, from the first feed point S1. The resonant current distribution of the second frequency band on the first radiator 21 flows from the first feed point S1 to the end of the first radiator 21 near the gap d.

[0104] like Figure 8 and Figure 9 As shown, in some embodiments, the second frequency band includes the WiFi 2.4G frequency band; correspondingly, under the excitation of the WiFi 2.4G radio frequency signal, part of the first radiator 21 can operate in 1 / 4 wavelength mode to support the transmission and reception of the WiFi 2.4G frequency band radio frequency signal, and the current distribution of the WiFi 2.4G frequency band flows from the first feed point S1 to the end of the first radiator 21 near the gap d.

[0105] like Figures 10 to 13As shown, in some embodiments, the radio frequency signal of the third frequency band provided by the second feed source 12 excites part of the second radiator 22 to operate in the fourth resonant mode, the second radiator 22 to operate in the fifth resonant mode, and the first radiator 21 to operate in the sixth resonant mode through the second feed point to support the third frequency band. The second connection point M2 is the connection point between the second matching circuit 32 and the second radiator 22. Under the excitation of the third frequency band, part of the second radiator 22 operates in the fourth resonant mode, the second radiator 22 operates in the fifth resonant mode, and the first radiator 21 operates in the sixth resonant mode to jointly support the transmission and reception of the radio frequency signal of the third frequency band.

[0106] The fourth resonant mode is a quarter-wavelength mode of the second radiator 22 from the end of the second radiator 22 near the gap d to the second connection point M2. The resonant current distribution in the third frequency band on the second radiator 22 flows from the end of the second radiator 22 near the gap d to the second connection point M2. The fifth resonant mode is a three-quarter-wavelength mode of the second radiator 22 from the end of the second radiator 22 near the gap d to the second ground point G2. The resonant current distribution in the third frequency band on the second radiator 22 flows from the second connection point M2 to the end of the second radiator 22 near the gap d, and from the second connection point M2 to the end of the second radiator 22 away from the gap d. The sixth resonant mode is a three-quarter-wavelength mode of the first radiator 21 from the end of the first radiator 21 near the gap d to the first ground point G1. The resonant current distribution in the third frequency band on the first radiator 21 flows from the end of the first radiator 21 near the gap d to the first ground point G1.

[0107] like Figures 10 to 13 As shown, in some embodiments, the third frequency band includes the WiFi 5G frequency band; correspondingly, under the excitation of the radio frequency signal of the WiFi 5G frequency band, a portion of the second radiator 22 can operate in a 1 / 4 wavelength mode to support the transmission and reception of the radio frequency signal of the WiFi 5G frequency band, and the current distribution of the WiFi 5G frequency band flows from the end of the second radiator 22 near the gap d to the second connection point M2; under the excitation of the WiFi 5G radio frequency signal, the second radiator 22 can operate in a 3 / 4 wavelength mode to support the transmission and reception of the radio frequency signal of the WiFi 5G frequency band, and the current distribution of the WiFi 5G frequency band flows from the second connection point M2 to the end of the second radiator 22 near the gap d, and from the second connection point M2 to the second ground point G2; under the excitation of the WiFi 5G radio frequency signal, the first radiator 21 can operate in a 3 / 4 wavelength mode to support the transmission and reception of the radio frequency signal of the WiFi 5G frequency band, WiFi The current distribution in the 5G band extends from the end of the first radiator 21 near the gap d to the first grounding point G1.

[0108] like Figures 14 to 16As shown, in some embodiments, the radio frequency signal of the fourth frequency band provided by the second feed source 12 excites part of the second radiator 22 to operate in the seventh resonant mode through the second feed point, and part of the second radiator 22 and part of the first radiator 21 jointly operate in the eighth resonant mode to support the fourth frequency band. Specifically, under the excitation of the radio frequency signal of the fourth frequency band, part of the second radiator 22 can operate in the seventh resonant mode, and part of the second radiator 22 and part of the first radiator 21 can jointly operate in the eighth resonant mode to support the transmission and reception of the radio frequency signal of the fourth frequency band.

[0109] The seventh resonant mode is a quarter-wavelength mode of the second radiator 22, extending from the end of the second radiator 22 near the gap d to the second connection point M2. The resonant current distribution in the fourth frequency band on the second radiator 22 flows from the end of the second radiator 22 near the gap d to the second connection point M2. The eighth resonant mode is a ring mode extending from the second feed point through the end of the second radiator 22 near the gap d to the first feed point S1, and from the first feed point S1 through the end of the second radiator 22 near the gap d to the ring mode corresponding to the second feed point. The resonant current distribution in the fourth frequency band on the first radiator 21 and the second radiator 22 flows from the second feed point to the first feed point S1, and from the first feed point S1 to the second feed point.

[0110] like Figures 14 to 16 As shown, in some embodiments, the fourth frequency band includes the SUB 6G frequency band, such as the N78 frequency band; correspondingly, under the excitation of the radio frequency signal of the N78 frequency band, a portion of the second radiator 22 can operate in 1 / 4 wavelength mode to support the transmission and reception of the radio frequency signal of the N78 frequency band, and the current distribution of the N78 frequency band flows from the end of the second radiator 22 near the gap d to the second connection point M2; under the excitation of the radio frequency signal of the N78 frequency band, a portion of the first radiator 21 and a portion of the second radiator 22 can work together in ring mode to support the transmission and reception of the radio frequency signal of the N78 frequency band, and the current distribution of the N78 frequency band flows from the second feed point to the first feed point S1, and from the first feed point S1 to the second feed point.

[0111] like Figure 17 As shown, the fifth-band radio frequency signal provided by the third feed source 13 excites the second radiator 22 to operate in the ninth resonant mode through the second feed point to support the fifth band. Under the excitation of the fifth-band radio frequency signal, the second radiator 22 operates in the ninth resonant mode to support the transmission and reception of the fifth-band radio frequency signal. The ninth resonant mode is the quarter-wavelength mode of the second radiator 22, corresponding to the end of the second radiator 22 near the gap d and the end of the second radiator 22 away from the gap d.

[0112] Based on the same inventive concept, embodiments of this application provide an electronic device that includes an antenna assembly as described in any of the preceding embodiments. A detailed description of the antenna assembly can be found in the preceding descriptions and will not be repeated here.

[0113] Understandably, with the continuous development and evolution of communication technology, the number of antennas and frequency bands in electronic devices are constantly increasing, and the functions of terminal devices are becoming increasingly rich. Positioning and navigation functions of electronic devices have become basic needs in people's daily lives, and the accuracy of GPS signal positioning and navigation directly affects user experience and product satisfaction. The navigation signals received by electronic devices are primarily satellite signals from the sky. To ensure better satellite signal reception and a superior user experience for positioning and navigation, the main beam radiation pattern of the GPS antenna in electronic devices must be oriented towards the satellite signal source in the sky. Currently, the space for antenna design within electronic devices is very limited, and the radiation direction of the GPS antenna energy is not only towards the top of the sky, but a large portion of the energy is also radiated towards the bottom.

[0114] Based on the above, this application embodiment also provides an electronic device that can adjust the resonant current distribution of the first frequency band on the ground through a first matching circuit, thereby improving the communication performance of the electronic device supporting the first frequency band.

[0115] like Figure 18 As shown in the figure, this application embodiment provides an electronic device, which includes a first feed source 11, a first radiator 21, a second radiator 22, a third radiator 23, a ground plane 40, and a first matching circuit 31. The ground plane 40 is connected to the common ground GND.

[0116] A gap d is provided between the first radiator 21 and the second radiator 22. The first radiator 21 and the third radiator 23 are respectively connected to the common ground GND through a first grounding point G1. The first grounding point G1 can be connected to the floor 40. The third radiator 23 is connected to the common ground GND through a first matching circuit 31. The third radiator 23 has a second connection point M2. The first end of the first matching circuit 31 is connected to the third radiator 23, and the second end of the first matching circuit 31 is connected to the floor 40.

[0117] The first radiator 21 is provided with a first feed point S1. The first feed source 11 excites the first radiator 21, the second radiator 22 and the third radiator 23 through the first feed point S1 to jointly support the first frequency band. The first feed source 11 also excites the first radiator 21 through the first feed point S1 to support the second frequency band.

[0118] The first matching circuit 31 is used to adjust the resonant current distribution of the first frequency band on the ground plane 40, so as to adjust the radiation pattern of the first frequency band and thus improve the performance of the first frequency band antenna. The ground plane 40 can be used as a radiating device to radiate radio frequency signals.

[0119] The electronic device provided in this application embodiment includes a first feed source 11, a first radiator 21, a second radiator 22, a third radiator 23, a ground plane 40, and a first matching circuit 31. A gap d is provided between the first radiator 21 and the second radiator 22. The first radiator 21 and the third radiator 23 are respectively connected to a common ground GND through a first grounding point G1. The third radiator 23 is connected to the common ground GND through the first matching circuit 31. The first radiator 21 has a first feed point S1. The first feed source 11 excites the first radiator 21, the second radiator 22, and the third radiator 23 through the first feed point S1 to jointly support a first frequency band. The first feed source 11 also excites the first radiator 21 through the first feed point S1 to support a second frequency band. The first matching circuit 31 is used to adjust the distribution of the resonant current of the first frequency band on the ground plane 40. This electronic device can support both the first and second frequency bands by sharing the first radiator 21, improving antenna integration and saving space. Furthermore, the second and third radiators 23 act as parasitic radiators for the first frequency band. The second radiator 22 helps improve the passive efficiency of the first frequency band antenna. The third radiator 23 guides the energy radiation direction of the first frequency band antenna, and a first matching circuit 31 is loaded on the third radiator 23 to adjust the resonant current distribution of the first frequency band on the ground plane 40, thereby adjusting the radiator pattern of the first frequency band and improving the radiation efficiency bandwidth of the first frequency band antenna. Thus, the communication performance of the electronic device supporting the first frequency band is improved.

[0120] Please continue reading. Figure 18 In some embodiments, the first frequency band includes the GPS L1 band, and the second frequency band includes the WiFi 2.4G band. For details, please refer to the relevant content above, which will not be repeated here.

[0121] Please continue reading. Figure 18 In some embodiments, the first matching circuit 31 is used to promote the concentration of the resonant current of the first frequency band in the area of ​​the floor 40 near the antenna assembly, suppress the distribution of the resonant current of the first frequency band in the area of ​​the floor 40 away from the antenna assembly, and excite the resonant current of the first frequency band on the floor 40 along a first direction; wherein the first direction is the extension direction of the second radiator 22.

[0122] Please continue reading. Figure 18In some embodiments, the floor 40 includes a top edge 401 and a bottom edge 402 disposed opposite to each other, and a first side edge 403 and a second side edge 404 connecting the top edge 401 and the bottom edge 402. Parts of the first radiator 21 and the second radiator 22 are disposed near the top edge 401, while the remaining parts of the first radiator 21 and the third radiator 23 are disposed near the first side edge 403 or the second side edge 404. A first grounding point G1 can be connected to either the first side edge 403 or the second side edge 404, and a second grounding point G2 can be connected to the top edge 401. The upper hemisphere of the electronic device supports a larger proportion of radiated energy in the first frequency band than the lower hemisphere.

[0123] For example, the first frequency band includes the GPS L1 frequency band, and the first direction is the X-axis direction; correspondingly, the first matching circuit 31 is used to promote the concentration of the resonant current of the GPS L1 frequency band in the top region of the floor 40, suppress the resonant current of the GPS L1 frequency band in the bottom region of the floor 40, and excite the lateral current of the GPS L1 frequency band on the floor 40, thereby adjusting the radiation pattern of the GPS L1 antenna, directing the radiated energy from the lower half to the upper hemisphere, increasing the upper hemisphere proportion of the GPS L1 radiation pattern of the terminal antenna assembly, thereby improving the communication performance of the electronic device supporting GPS L1, and helping to improve the user's navigation and positioning experience.

[0124] It should be noted that the first matching circuit 31 in the electronic device can be the first matching circuit 31 of the aforementioned antenna assembly, and its specific description can be found in the relevant content above, so it will not be repeated here. In addition, the first feed 11, the first radiator 21, the second radiator 22, and the third radiator 23 in the electronic device can be the first feed 11, the first radiator 21, the second radiator 22, and the third radiator 23 of the aforementioned antenna assembly, respectively, and their specific descriptions can be found in the relevant content above, so it will not be repeated here.

[0125] like Figure 19 As shown, in some embodiments, the electronic device further includes a second feed source 12 and a third feed source 13. The second radiator 22 is provided with a second grounding point G2 and a second feed point. The second grounding point G2 is located away from the gap d and connected to the common ground GND. The second feed point is connected to the second feed source 12 and the third feed source 13 respectively. The second feed source 12 excites the second radiator 22 and the first radiator 21 through the second feed point to jointly support the third frequency band and the fourth frequency band. The third feed source 13 excites the second radiator 22 through the second feed point to support the fifth frequency band. The second feed source 12 and the third feed source 13 can be the same as the second feed source 12 and the third feed source 13 in the antenna assembly, as described above, and will not be repeated here.

[0126] Please continue reading. Figure 19In some embodiments, the electronic device further includes a second matching circuit 32, which is inductive in the third and fourth frequency bands and capacitive in the fifth frequency band. The second matching circuit 32 may be the same as the second matching circuit 32 in the antenna assembly, as described above, and will not be repeated here.

[0127] Please continue reading. Figure 19 In some embodiments, an electronic device is provided, comprising a first feed source 11, a second feed source 12, a third feed source 13, a first radiator 21, a second radiator 22, a third radiator 23, a first matching circuit 31, a second matching circuit 32, and a floor 40. A gap d is provided between the first radiator 21 and the second radiator 22.

[0128] Floor 40 is connected to the common ground GND. The first radiator 21 and the third radiator 23 are respectively connected to the first side 403 of floor 40 through the first grounding point G1, and the second radiator 22 is connected to the top edge 401 of floor 40.

[0129] The first radiator 21, the second radiator 22, and the third radiator 23 are all metal frames. The first radiator 21 is provided with a first feed point S1. The first feed source 11 excites the first radiator 21, the second radiator 22, and the third radiator 23 through the first feed point S1 to jointly support the GPS L1 frequency band. The first feed source 11 also excites the first radiator 21 through the first feed point S1 to support the WiFi 2.4G frequency band.

[0130] The second radiator 22 is provided with a second grounding point G2 and a second feed point. The second grounding point G2 is located away from the gap d and connected to the common ground GND. The second feed point is connected to the second feed source 12 and the third feed source 13 respectively. The second feed source 12 excites the second radiator 22 and the first radiator 21 through the second feed point to jointly support the WiFi 5G band and the SUB6G band, such as the N78 band. The third feed source 13 excites the second radiator 22 through the second feed point to support the GPS L5 band.

[0131] The third radiator 23 has a first connection point M1. The first matching circuit 31 includes a second capacitor C2. The first end of the second capacitor C2 is connected to the first connection point M1, and the second end of the second capacitor C2 is connected to the ground plane 40. The capacitance of the second capacitor C2 is 1.8pF. The resonant frequency of the first matching circuit 31 is 1.4GHz. The length of the third radiator 23 is 8.5mm.

[0132] The second radiator 22 has a second connection point M2. The second matching circuit 32 includes a first inductor L1 and a first capacitor C1. The first end of the first inductor L1 is connected to the second connection point M2, and the second end of the first inductor L1 is connected to the first end of the first capacitor C1. The second end of the first capacitor C1 is connected to the ground plane 40. The inductance value of the first inductor L1 is 18nH, and the capacitance value of the first capacitor C1 is 0.5pF. The resonant frequency of the second matching circuit 32 is 1.72GHz.

[0133] The electronic device provided in this application embodiment covers the GPS L1 band, WiFi 2.4G band, WiFi 5G band, SUB 6G band (such as the N78 band), and GPS L5 operating band through a shared antenna radiator. The high integration of multiple frequency band antennas improves the space utilization of the metal frame and allows for more space for other antenna designs in the electronic device. Furthermore, a second matching circuit 32 is loaded on the head-to-head radiating stub of the GPS L1 antenna, i.e., the second radiator 22, to enhance the coupling effect between the first radiator 21 and the second radiator 22, thereby improving the passive efficiency of GPS L1. A first matching circuit 31 is loaded on the reverse parasitic radiating stub of the GPS L1 antenna, i.e., the third radiator 23, to adjust the radiation pattern of GPS L1, directing the radiated energy from the lower half to the upper hemisphere, increasing the proportion of GPS L1 radiated energy in the upper hemisphere, and improving the user's navigation and positioning experience.

[0134] Simulation analysis was performed based on the electronic equipment provided above. Figure 20a and Figure 20b A schematic diagram of the current distribution of the electronic device supporting the GPS L1 band provided in this application embodiment is provided. The current distribution of GPS L1 on the floor 40 excites more transverse current, and the GPS L1 radiated energy is more concentrated on the upper hemisphere. Figure 21a and Figure 21b A schematic diagram of the current distribution of an electronic device supporting the GPS L1 band in the related art is provided, in which the floor 40 excites more longitudinal current, resulting in more GPS L1 radiated energy being concentrated in the lower hemisphere.

[0135] Figure 22 This application provides a radiation pattern for an electronic device that supports the GPS L1 band, i.e., Figure 22 This application defines the radiation pattern of GPSL1 when the resonant frequency of the first matching circuit 31 is set before the center frequency of GPSL1. Figure 23 A radiation pattern of GPS L1 is provided when the resonant frequency of the first matching circuit 31 is set after the GPS L1 frequency. From Figure 22 and Figure 23It can be seen that when the lateral current of the main ground in the middle frame is strengthened, the radiated energy of GPS L1 will be concentrated in the upper half; when the longitudinal current of the main ground in the middle frame is strengthened, the radiated energy of GPS L1 will be concentrated in the lower half.

[0136] Figure 24 This application provides an S-parameter curve for an antenna in an electronic device, as shown in curve S1. The first feed source 11 resonates in the GPS L1 and WiFi 2.4G bands via the first radiator 21. Curve S2 shows that the second feed source 12 and the third feed source 13, coupled through the second radiator and the first radiator 21, jointly resonate in the WiFi 5G and N78 bands. Curve S3 shows that the third feed source 13 resonates in the GPS L5 band via the second radiator 22. The second feed source 12 and the third feed source 13 are connected to the second radiator 22 via the same feed point spring, jointly achieving GPS L5, WiFi 5G, and N78 resonances. This allows for multi-frequency operation without adding a metal frame radiator, improving the utilization rate of the metal frame radiator and enhancing the integration of the terminal electronic device.

[0137] Figure 25 An efficiency curve of the antenna in the electronic device provided in this application embodiment is provided. As shown by curve E1, the system efficiency of GPS L1 in the operating frequency band is -3.5dB, and the system efficiency of WiFi 2.4G in the operating frequency band is -5.7dB. As shown by curve E2, the system efficiency of WiFi 5G in the operating frequency band is within -6dB, with a peak system efficiency of -5dB, and the system efficiency of N78 in the operating frequency band is within -4.5dB, with a peak system efficiency of -3.2dB. As shown by curve E3, the system efficiency of GPS L5 in the operating frequency band is -7.5dB. As can be seen from the figure, the antenna system of the electronic device has good system radiation efficiency in the covered frequency band, which meets the antenna performance requirements of the electronic device.

[0138] Figure 26a and Figure 26b Each of the embodiments of this application provides a simulated 3D radiation pattern of the antenna operating in the GPS L5 frequency band in the electronic device. Figure 27 The corresponding upper hemisphere radiation efficiency percentage for the GPS L5 band is provided.

[0139] Figure 28This application provides an electronic device in which the GPS L1 efficiency is compared with and without the second matching circuit 32 loaded at the second connection point M2, as shown in the comparison curves. Specifically, in this embodiment, the LC values ​​are: L1 = 18nH, C1 = 0.5pF, the LC resonant frequency is 1.72GHz, and the resonant frequency of the second matching circuit 32 is placed after the GPS L1 frequency. The passive efficiency of the GPS L1 antenna is improved by utilizing the coupling enhancement effect of the second radiator 22 on the first radiator 21. Figure 27 As can be seen from the efficiency comparison curve, when the second matching circuit 32 is added, the GPS L1 radiation efficiency is improved by about 1dB, that is, the passive efficiency of the GPS L1 antenna is improved by 20.5%.

[0140] Figure 29 This application provides an electronic device with a GPS L1 efficiency curve when a first matching circuit 31 is loaded at the first connection point M1 of the reverse parasitic third radiator 23, and a comparison chart of the GPS L1 curves when 50 ohms are loaded at the first connection point M1. It can be seen from the efficiency chart that the loading of the matching circuit at the first connection point M1 of the reverse parasitic radiator branch has little impact on the passive efficiency of GPS L1.

[0141] Figure 30a and Figure 30b A simulated 3D radiation pattern of the GPS L1 antenna is provided for an electronic device when a 50-ohm load is applied at the first connection point M1 of the third radiator 23. Figure 31 A simulation of the upper half of the GPS L1 antenna is provided when an electronic device is loaded with 50 ohms at the first connection point M1 of the reverse parasitic third radiator 23. At this time, the upper half of the GPS L1 antenna is -2.85dB, that is, the energy radiated by the GPS L1 antenna toward the top of the mobile phone is 51.9%.

[0142] Figure 32a and Figure 32b This application provides a simulated 3D radiation pattern of the GPS L1 antenna in an electronic device provided in an embodiment of the present application, when a first matching circuit 31C2 = 1.8pF capacitor is loaded at the first connection point M1 of the reverse parasitic third radiator 23. Figure 33 This application provides an embodiment of an electronic device where, when a first matching circuit 31C2 = 1.8pF capacitor is applied to the first connection point M1 of the reverse parasitic third radiator 23, the simulated upper half ratio of the GPS L1 antenna is -2.2dB, meaning the GPS L1 antenna radiates 60.26% of the energy towards the top of the phone. (Compare Figure 30 and...) Figure 29As shown in the 3D radiation pattern, by loading the first matching circuit 31 onto the reverse parasitic third radiator 23, the energy radiation pattern of GPS L1 can be adjusted, directing the radiated energy from the lower hemisphere to the upper hemisphere. (Comparison) Figure 30a and Figure 30b ,and Figure 32a and Figure 32b In the 1.57GHz operating frequency band, the upper hemisphere radiative efficiency ratio increased from -2.85dB to -2.2dB, and the upper hemisphere radiated energy increased from 51.9% to 60.26%.

[0143] like Figure 34 As shown, further explanation will be given using a mobile phone 50 as an example. Specifically, as... Figure 34 As shown, the mobile phone 50 may include a memory 51 (which optionally includes one or more computer-readable storage media), processing circuitry 52, an input / output (I / O) subsystem 53, and at least one antenna device 54 as described in any of the foregoing embodiments. These components optionally communicate via one or more communication buses or signal lines 55. Those skilled in the art will understand that... Figure 34 The mobile phone 50 shown does not constitute a limitation on the mobile phone and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Figure 34 The various components shown are implemented in hardware, software, or a combination of both, including one or more signal processing and / or application-specific integrated circuits.

[0144] Memory 51 optionally includes high-speed random access memory and also optionally includes non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplary software components stored in memory 51 include an operating system 511, a communication module (or instruction set) 512, a global positioning system (GPS) module (or instruction set) 513, etc. Processing circuitry 52 can be used to control the operation of mobile phone 50. This processing circuitry 52 can be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application-specific integrated circuits, etc. The I / O subsystem 53 couples input / output peripherals on mobile phone 50, such as a keypad and other input control devices, to a peripheral interface. I / O subsystem 53 optionally includes a touchscreen, buttons, a tone generator, an accelerometer (motion sensor), an ambient light sensor and other sensors, light-emitting diodes and other status indicators, data ports, etc. For example, a user can control the operation of the mobile phone 50 by supplying commands via the I / O subsystem 53, and can use the output resources of the I / O subsystem 53 to receive status information and other outputs from the mobile phone 50. For instance, a user can press button 531 to turn the phone on or off.

[0145] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0146] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0147] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An antenna assembly, characterized in that, include: A first feed source, a second feed source, a third feed source, a first radiator, a second radiator, and a third radiator are provided, with a gap between the first radiator and the second radiator. The first radiator and the third radiator are respectively connected to a common ground through a first grounding point; wherein... The first radiator is provided with a first feed point. The first feed source excites the first radiator, the second radiator and the third radiator to jointly support the first frequency band through the first feed point. The first feed source also excites the first radiator to support the second frequency band through the first feed point. The second radiator is provided with a second grounding point and a second feed point. The second grounding point is located away from the gap and connected to the common ground. The second feed point is connected to the second feed source and the third feed source respectively. The second feed source excites the second radiator and the first radiator to jointly support the third frequency band and the fourth frequency band through the second feed point. The third feed source excites the second radiator to support the fifth frequency band through the second feed point.

2. The antenna assembly according to claim 1, characterized in that, The third radiator is provided with a first connection point, and the antenna assembly further includes a first matching circuit. The second end of the first matching circuit is connected to the first connection point and the second end of the first matching circuit is connected to the common ground. The first matching circuit is used to adjust the length of the third radiator.

3. The antenna assembly according to claim 2, characterized in that, The resonant frequency of the first matching circuit is less than the center frequency of the first frequency band.

4. The antenna assembly according to any one of claims 1-3, characterized in that, The length of the third radiator is greater than the length of the first radiator.

5. The antenna assembly according to any one of claims 1-3, characterized in that, The antenna assembly further includes a second matching circuit. The second radiator has a second connection point. The first end of the second matching circuit is connected to the second connection point, and the second end of the second matching circuit is connected to the common ground. The second matching circuit is inductive in the third frequency band and the fourth frequency band, and the second matching circuit is capacitive in the fifth frequency band.

6. The antenna assembly according to claim 5, characterized in that, The resonant frequency of the second matching circuit is greater than the center frequency of the first frequency band.

7. The antenna assembly according to claim 5, characterized in that, The second matching circuit includes a first inductor and a first capacitor connected in series. The first end of the first inductor is connected to the second connection point, the second end of the first inductor is connected to the first end of the first capacitor, and the second end of the first capacitor is connected to the common ground.

8. The antenna assembly according to claim 5, characterized in that, The first feed source provides a radio frequency signal in the first frequency band, which, through the first feed point, excites the first radiator to operate in a first resonant mode, and excites the first radiator, a portion of the second radiator, and the third radiator to jointly operate in a second resonant mode, thereby supporting the first frequency band; wherein, The first resonant mode is the IFA antenna quarter-wavelength mode of the first radiator, from the first grounding point to the end of the first radiator near the gap. The second resonant mode is a half-wavelength mode of the second radiator from the second connection point to the end of the second radiator near the gap, the first radiator from the end of the first radiator near the gap to the first grounding point, and the third radiator from the first grounding point to the end of the third radiator away from the first grounding point.

9. The antenna assembly according to any one of claims 1-3, characterized in that, The second-frequency radio frequency signal provided by the first feed source excites the first radiator to operate in a third resonant mode through the first feed point to support the second frequency band; wherein, The third resonant mode is a quarter-wavelength mode of the first radiator, corresponding to the portion of the first radiator from the first feed point to the end of the first radiator near the gap.

10. The antenna assembly according to claim 5, characterized in that, The radio frequency signal of the third frequency band provided by the second feed source is used to excite the second radiator to operate in a fourth resonant mode, the second radiator to operate in a fifth resonant mode, and the first radiator to operate in a sixth resonant mode, thereby supporting the third frequency band; wherein, The fourth resonant mode is a quarter-wavelength mode of the second radiator from one end of the second radiator near the gap to the portion of the second radiator corresponding to the second connection point; The fifth resonant mode is a three-quarter wavelength mode of the second radiator, from one end of the second radiator near the gap to the portion corresponding to the second grounding point; The sixth resonant mode is a three-quarter wavelength mode of the first radiator from one end of the first radiator near the gap to the first grounding point.

11. The antenna assembly according to claim 5, characterized in that, The radio frequency signal of the fourth frequency band provided by the second feed source excites part of the second radiator to operate in the seventh resonant mode through the second feed point, and excites part of the second radiator and part of the first radiator to jointly operate in the eighth resonant mode to support the fourth frequency band; wherein, The seventh resonant mode is a quarter-wavelength mode of the second radiator from one end of the second radiator near the gap to the portion of the second radiator corresponding to the second connection point; The eighth resonant mode is a ring mode that extends from the second feed point through the second radiator to the end of the gap near the first feed point, and from the first feed point through the second radiator to the end of the gap near the second feed point.

12. The antenna assembly according to any one of claims 1-3, characterized in that, The radio frequency signal of the fifth frequency band provided by the third feed source 13 excites the second radiator to operate in the ninth resonant mode through the second feed point to support the fifth frequency band; wherein... The ninth resonant mode is a quarter-wavelength mode of the second radiator, corresponding to the end of the second radiator closest to the gap and the end of the second radiator furthest from the gap.

13. The antenna assembly according to any one of claims 1-3, characterized in that, The first frequency band includes the GPS L1 band, the second frequency band includes the WiFi 2.4G band, the third frequency band includes the WiFi 5G band, the fourth frequency band includes the SUB 6G band, and the fifth frequency band includes the GPS L5 band.

14. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-13.

15. An electronic device, characterized in that, The electronic device includes a first feed source, a first radiator, a second radiator, a third radiator, a ground plane, and a first matching circuit. A gap is provided between the first and second radiators. The first and third radiators are respectively connected to a common ground through a first grounding point. The third radiator is connected to the common ground via the first matching circuit. The first radiator is provided with a first feed point. The first feed source excites the first radiator, the second radiator and the third radiator to jointly support the first frequency band through the first feed point. The first feed source also excites the first radiator to support the second frequency band through the first feed point. The first matching circuit is used to adjust the resonant current distribution of the first frequency band on the floor.

16. The electronic device according to claim 15, characterized in that, The first matching circuit is used to promote the concentration of the resonant current of the first frequency band in the area of ​​the floor near the first radiator, suppress the distribution of the resonant current of the first frequency band in the area of ​​the floor away from the first radiator, and excite the resonant current of the first frequency band on the floor along a first direction; wherein, the first direction is the extension direction of the second radiator.

17. The electronic device according to claim 15, characterized in that, The floor includes a top edge and a bottom edge disposed opposite to each other, and a first side edge and a second side edge connected to the top edge and the bottom edge; wherein, a portion of the first radiator and the second radiator are disposed close to the top edge, and the remaining portion of the first radiator and the third radiator are disposed close to the first side edge or the second side edge; The electronic device supports a higher proportion of radiation energy in the upper hemisphere than in the lower hemisphere for the first frequency band.

Images