Antenna structure and electronic device

Abstract

Provided in the present application are an antenna structure and an electronic device. In the antenna structure, a conductive portion of a frame is used as a radiator; in the antenna structure, an electrical signal is fed to the radiator in an indirect coupling manner by means of a first feed member and a second feed member; and the feed members and the radiator are used for generating a plurality of resonances to form two resonant frequency bands, so as to expand the bandwidth. Moreover, in the resonant frequency bands, the antenna structure has good radiation efficiency and system efficiency.

Description

An antenna structure and its electronic device

[0001] This application claims priority to Chinese Patent Application No. 202411550836.9, filed with the State Intellectual Property Office of China on October 31, 2024, entitled “An Antenna Structure and Electronic Device Thereof”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of wireless communication, and more particularly to an antenna structure and electronic device thereof. Background Technology

[0003] As people's demand for high-speed data transmission increases, the trend in industrial design (ID) of electronic devices is towards larger screen ratios and multiple cameras. This has resulted in a significant reduction in antenna clearance and increasingly limited layout space.

[0004] In the current state, the communication frequency bands of electronic devices will continue to coexist for a long time, including the third-generation wireless systems (3G), fourth-generation wireless systems (4G), and fifth-generation wireless systems (5G), requiring an ever-increasing number of antennas.

[0005] Traditional methods of expanding antenna efficiency bandwidth, such as increasing the size of the antenna radiator, have reached a bottleneck. Therefore, improving the antenna efficiency bandwidth while keeping the radiator size constant has become a top priority. Summary of the Invention

[0006] This application provides an antenna structure and an electronic device thereof. The antenna structure utilizes the conductive portion of the frame as a radiator. The antenna structure feeds an electrical signal to the radiator via indirect coupling through a first feed element and a second feed element.

[0007] In a first aspect, an antenna structure is provided, comprising: a ground plane; a frame, the frame being at least partially spaced from the ground plane, the frame including a first position and a second position, the frame having a first insulating gap or being coupled to the ground plane at the first position, the frame being coupled to the ground plane at the second position, and the frame having a second insulating gap between the first position and the second position; a radiator, the radiator being a conductive portion of the frame between the first position and the second position; a first feed element, the first feed element having a first end as a grounded end and a second end as an open end, the radiator and the first feed element being spaced apart, the radiator and the first feed element at least partially overlapping along a first direction, the first direction being perpendicular to the extension direction of the radiator, and the extension direction of the first feed element being in the same direction as the extension direction of the radiator; a second feed element, the second feed element having a first end as an open end and a second end as a grounded end, the radiator and the second feed element being spaced apart, the radiator and the second feed element at least partially overlapping along the first direction, and the extension direction of the second feed element being in the same direction as the extension direction of the radiator; the first feed element... The first feeding element includes a first feeding point, and a first feeding circuit coupled to the first feeding point. The first feeding circuit is used to feed in a radio frequency signal of a first operating frequency band. A second feeding circuit includes a second feeding point, and a second feeding circuit coupled to the second feeding point. The second feeding circuit is used to feed in a radio frequency signal of a second operating frequency band. The length of the radiator between the projection of the first end of the first feeding element on the frame and the second insulating gap is less than or equal to half the length of the first feeding element, and the second end of the first feeding element extends towards the first position. The length of the radiator between the projection of the first end of the second feeding element on the frame and the second insulating gap is less than or equal to half the length of the second feeding element, and the second end of the second feeding element extends towards the second position. The first feeding element and the radiator are used to generate a first resonance and a second resonance, which together support the first operating frequency band. The second feeding element and the radiator are used to generate a third resonance and a fourth resonance, which together support the second operating frequency band.

[0008] According to embodiments of this application, the first and second ends of the radiator are grounded, forming a conformal slot antenna structure. In electronic devices, compared to the radiator (the conductive portion in the frame serves as the radiator), the first and second feed elements have a poorer radiation environment (e.g., poor clearance, close proximity to adjacent metal components), and the antenna structure does not generate radiation from the first and second feed elements. However, the first and second feed elements can generate new current paths for the radiator, thereby producing new resonances (e.g., a second resonance and a fourth resonance) to extend the operating bandwidth of the antenna structure.

[0009] The first feed element and the radiator can form a first sub-antenna. The second feed element and the radiator can form a second sub-antenna.

[0010] When an electrical signal is fed into the first feeding circuit, the first sub-antenna can generate a first resonance and a second resonance, which together can support the first operating frequency band.

[0011] Because the first and second ends of the radiator are grounded, the region near the first and second ends of the radiator has a strong current and a weak electric field. Conversely, the region near the first insulating gap of the radiator (a region at a certain distance from the first insulating gap, for example, within 5 mm) has a weak current and a strong electric field. And because the first and second ends of the first feeder are grounded, the region near the first and second ends of the first feeder has a weak electric field and a strong current.

[0012] The first insulating gap of the radiator is close to the first end of the first feed element. The region of the radiator with a strong electric field (weak magnetic field) (the region near the first insulating gap) is close to the region of the first feed element with a weak electric field (strong magnetic field). The radiator and the first feed element can be coupled through electric and magnetic field coupling.

[0013] The radiator can generate a first resonance and a second resonance using a slotted CM mode. In one embodiment, a first feeder excites the radiator using a similar slotted DM mode to generate the aforementioned first and second resonances.

[0014] When an electrical signal is fed into the second feeding circuit, the second sub-antenna can generate a third resonance and a fourth resonance, which together support the second operating frequency band.

[0015] Because the first and second ends of the radiator are grounded, there is a strong current and a weak electric field in the vicinity of the first and second ends. Conversely, there is a weak current and a strong electric field in the vicinity of the first insulating gap of the radiator (a region within a certain distance of the first insulating gap, for example, within 5 mm). The second feeder has an open first end and a grounded second end. The second feeder has a weak current and a strong electric field in the vicinity of its first end, and a weak electric field and a strong current in the vicinity of its second end.

[0016] The first insulating gap of the radiator is close to the first end of the first feed element. The region of the radiator with a strong electric field (weak magnetic field) (the region near the first insulating gap of the radiator) is close to the region of the first feed element with a strong electric field (weak magnetic field). The radiator and the first feed element can be coupled through electric field coupling (magnetic field coupling).

[0017] The radiator can generate the third and fourth resonances using a slot DM mode. In one embodiment, the second feeder excites the radiator using a similar line DM mode to generate the aforementioned third and fourth resonances.

[0018] The first and second resonances can both be considered as generated by the slot CM mode, and the third and fourth resonances can both be considered as generated by the slot DM mode. Due to the good isolation between the slot CM and slot DM modes, there is also good isolation between the first and second operating frequency bands, resulting in a good operating bandwidth for the antenna structure.

[0019] Furthermore, since the first and second resonances are both generated by the same mode, the current on the radiator will not change abruptly in the first operating frequency band, and the radiation characteristics of the antenna structure will not change significantly (for example, the maximum radiation direction of the radiation pattern will shift significantly). Similarly, the third and fourth resonances can be understood accordingly.

[0020] In conjunction with the first aspect, in some implementations of the first aspect, the center frequency f1 of the first operating frequency band and the center frequency f2 of the second operating frequency band satisfy: |f2-f1|≤f1×10%, or |f2-f1|≤f2×10%.

[0021] According to the embodiments of this application, since both the first and second feed elements have a structure with one end grounded and the other open, the excitation modes of the first and second feed elements are not entirely slot DM modes (or, can also be understood as line DM modes). Correspondingly, the modes generated by the radiators excited by the first and second feed elements are not entirely orthogonal slot CM and slot DM modes. Therefore, the isolation between the first and second operating frequency bands intersects with the resonant frequency band degradation generated by pure slot CM and slot DM modes. When there is a certain frequency difference between the first and second operating frequency bands, the antenna structure has good radiation characteristics (e.g., isolation) in both the first and second operating frequency bands.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the frame is coupled to the floor at the first position, and the length D1 of the radiator between the first position and the second insulating gap and the length D2 of the radiator between the second position and the second insulating gap satisfy: D1×75%≤D2≤D1×125%.

[0023] According to an embodiment of this application, when the lengths of the radiators on both sides of the first insulating gap are approximately the same, the antenna structure is more symmetrical. With the increase in the symmetry of the antenna structure 200, the radiators can be better excited, thereby giving the antenna structure better radiation characteristics (e.g., bandwidth, radiation efficiency, etc.) at operating resonance.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the frame has the first insulating gap at the first position, and the radiator length D1 between the first position and the second insulating gap and the radiator length D2 between the second position and the second insulating gap satisfy: D2×150%≤D1.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the minimum distance between the first power supply element and the second power supply element is less than or equal to half the length of the first power supply element or half the length of the second power supply element.

[0026] In conjunction with the first aspect, in some implementations of the first aspect, the minimum distance between the first power supply element and the second power supply element is less than or equal to 5 mm.

[0027] According to embodiments of this application, the first feed element and the second feed element can be close to each other to make the antenna structure layout more compact, which is convenient for installation in the increasingly limited internal space of electronic devices. In one embodiment, the first ends of the first feed element and the first ends of the second feed element are opposite to each other and do not contact each other.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, the first projection and the second projection do not overlap, the first projection being the projection of the first power supply component on the frame, and the second projection being the projection of the second power supply component on the frame.

[0029] According to embodiments of this application, the first power supply element and the second power supply element can be arranged alternately. In one embodiment, the first power supply element and the second power supply element do not overlap along a first direction. In one embodiment, the entire first power supply element is located on one side of the length direction of the second power supply element. The entire second power supply element is located on one side of the length direction of the first power supply element.

[0030] In conjunction with the first aspect, in some implementations of the first aspect, the physical length L0 of the radiator and the physical length L1 of the first feeder satisfy: L0×25%≤L1≤L0×50%, and / or, the physical length L0 of the radiator and the physical length L2 of the second feeder satisfy: L0×25%≤L2≤L0×50%.

[0031] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the first power supply element and the radiator is less than or equal to 5 mm, and / or the distance between the second power supply element and the radiator is less than or equal to 5 mm.

[0032] According to an embodiment of this application, the distance D between the first feeder and / or the second feeder and the radiator is less than or equal to 5 mm, so that the first feeder and / or the second feeder and the radiator have good coupling characteristics.

[0033] In conjunction with the first aspect, in certain implementations of the first aspect, based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being less than or equal to 1 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz; based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz; based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 2 GHz and less than or equal to 3 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0034] In a second aspect, an antenna structure is provided, comprising: a ground plane; a frame, the frame being at least partially spaced from the ground plane, the frame including a first position and a second position, the frame having a first insulating gap at the first position, the frame having a second insulating gap at the second position, the frame having a grounding point between the first position and the second position, the grounding point being coupled to the ground plane; a radiator, the radiator being a conductive portion of the frame between the first position and the second position; a first feed element, the first feed element having a first open end and a second grounded end, the radiator and the first feed element being spaced apart, the radiator and the first feed element at least partially overlapping along a first direction, the first direction being perpendicular to the extension direction of the radiator, and the extension direction of the first feed element being in the same direction as the extension direction of the radiator; a second feed element, the second feed element having a first grounded end and a second open end, the radiator and the second feed element being spaced apart, the radiator and the second feed element at least partially overlapping along the first direction, and the extension direction of the second feed element being in the same direction as the extension direction of the radiator; A first feeding circuit, comprising a first feeding element including a first feeding point, the first feeding circuit coupled to the first feeding point, the first feeding circuit being used to feed in a radio frequency signal of a first operating frequency band; a second feeding circuit, comprising a second feeding point, the second feeding circuit coupled to the second feeding point, the second feeding circuit being used to feed in a radio frequency signal of a second operating frequency band; wherein, the length of the radiator between the projection of the first end of the first feeding element on the frame and the grounding point is less than or equal to half the length of the first feeding element, and the second end of the first feeding element extends toward the first position; the length of the radiator between the projection of the first end of the second feeding element on the frame and the grounding point is less than or equal to half the length of the second feeding element, and the second end of the second feeding element extends toward the second position; the first feeding element and the radiator are used to generate a first resonance and a second resonance, the first resonance and the second resonance being used to jointly support the first operating frequency band; the second feeding element and the radiator are used to generate a third resonance and a fourth resonance, the third resonance and the fourth resonance being used to jointly support the second operating frequency band.

[0035] According to embodiments of this application, the first and second ends of the radiator are open, allowing for the formation of a conformal antenna structure. In electronic devices, compared to the radiator (which is the conductive portion within the frame), the first and second feed elements have a poorer radiation environment (e.g., poor clearance, close proximity to adjacent metal components), and the antenna structure does not radiate from the first and second feed elements. However, the first and second feed elements can generate new current paths for the radiator, thereby producing new resonances (e.g., a second resonance and a fourth resonance), thus extending the operating bandwidth of the antenna structure.

[0036] The first feed element and the radiator can form a first sub-antenna. The second feed element and the radiator can form a second sub-antenna.

[0037] When an electrical signal is fed into the first feeding circuit, the first sub-antenna can generate a first resonance and a second resonance, which together can support the first operating frequency band.

[0038] Because the first and second ends of the radiator are open, a strong electric field and a weak current exist in the vicinity of these ends. Conversely, a weak electric field and a strong current exist in the vicinity of the grounding point of the radiator (a region within a certain distance of the grounding point, for example, within 5 mm). The first feed element has an open first end and a grounded second end. The first feed element has a weak current and a strong electric field in the vicinity of its first end, and a strong current and a weak electric field in the vicinity of its second end.

[0039] The grounding point of the radiator is close to the first end of the first feeder. The region of the radiator with a weaker electric field (stronger magnetic field) (the region near the grounding point) is close to the region of the first feeder with a stronger electric field (weaker magnetic field). The radiator and the first feeder can be coupled through electric and magnetic field coupling.

[0040] The radiator can generate a first resonance and a second resonance using a linear CM mode. In one embodiment, the first feed element excites the radiator using a similar linear DM mode to generate the aforementioned first and second resonances.

[0041] When an electrical signal is fed into the second feeding circuit, the second sub-antenna can generate a third resonance and a fourth resonance, which together support the second operating frequency band.

[0042] Because the first and second ends of the radiator are open, a strong electric field and a weak current exist in the vicinity of these ends. Conversely, a weak electric field and a strong current exist in the vicinity of the grounding point of the radiator (a region within a certain distance of the grounding point, for example, within 5 mm). The second feeder has a grounded first end and an open second end. The first feeder has a weak electric field and a strong current in the vicinity of its first end, and a weak current and a strong electric field in the vicinity of its second end.

[0043] The grounding point of the radiator is close to the first end of the second feeder. The region of the radiator with a weaker electric field (stronger magnetic field) (the region near the grounding point) is close to the region of the first feeder with a weaker electric field (stronger magnetic field). The radiator and the second feeder can be coupled through electric field coupling (magnetic field coupling).

[0044] The radiator can generate the third and fourth resonances using a line DM mode. In one embodiment, the second feeder excites the radiator using a similar slot DM mode to generate the aforementioned third and fourth resonances.

[0045] The first and second resonances can both be considered as generated by the linear CM mode, and the third and fourth resonances can both be considered as generated by the linear DM mode. Due to the good isolation between the linear CM and linear DM modes, there is also good isolation between the first and second operating frequency bands, resulting in a good operating bandwidth for the antenna structure.

[0046] Furthermore, since the first and second resonances are both generated by the same mode, the current on the radiator will not change abruptly in the first operating frequency band, and the radiation characteristics of the antenna structure will not change significantly (for example, the maximum radiation direction of the radiation pattern will shift significantly). Similarly, the third and fourth resonances can be understood accordingly.

[0047] In conjunction with the second aspect, in some implementations of the second aspect, the center frequency f1 of the first operating frequency band and the center frequency f2 of the second operating frequency band satisfy: |f2-f1|≤f1×10%, or |f2-f1|≤f2×10%.

[0048] In conjunction with the second aspect, in some implementations of the second aspect, the length D1 of the radiator between the first position and the grounding point and the length D2 of the radiator between the second position and the grounding point satisfy: D1×75%≤D2≤D1×125%.

[0049] In conjunction with the second aspect, in some implementations of the second aspect, the minimum distance between the first power supply element and the second power supply element is less than or equal to half the length of the first power supply element or half the length of the second power supply element.

[0050] In conjunction with the second aspect, in some implementations of the second aspect, the minimum distance between the first power supply element and the second power supply element is less than or equal to 5 mm.

[0051] In conjunction with the second aspect, in some implementations of the second aspect, the first projection and the second projection do not overlap, the first projection being the projection of the first power supply component on the frame, and the second projection being the projection of the second power supply component on the frame.

[0052] According to embodiments of this application, the first power supply element and the second power supply element can be arranged alternately. In one embodiment, the first power supply element and the second power supply element do not overlap along a first direction. In one embodiment, the entire first power supply element is located on one side of the length direction of the second power supply element. The entire second power supply element is located on one side of the length direction of the first power supply element.

[0053] In conjunction with the second aspect, in some implementations of the second aspect, the physical length L0 of the radiator and the physical length L1 of the first feeder satisfy: L0×25%≤L1≤L0×50%, and / or, the physical length L0 of the radiator and the physical length L2 of the second feeder satisfy: L0×25%≤L2≤L0×50%.

[0054] In conjunction with the second aspect, in some implementations of the second aspect, the distance between the first power supply element and the radiator is less than or equal to 5 mm, and / or the distance between the second power supply element and the radiator is less than or equal to 5 mm.

[0055] In conjunction with the second aspect, in certain implementations of the second aspect, based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being less than or equal to 1 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz; based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz; based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 2 GHz and less than or equal to 3 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0056] Thirdly, an antenna structure is provided, comprising: a ground plane; a frame, the frame being at least partially spaced from the ground plane, the frame including a first position and a second position, the frame having a first gap and a second gap at the first position and the second position respectively; a radiator, the radiator being a conductive portion of the frame between the first position and the second position; a first feed element, a first end of the first feed element being an open end, a second end of the first feed element being a ground end, the radiator and the first feed element being spaced apart, and the radiator and the first feed element at least partially overlapping along a first direction, the first direction being perpendicular to the extension direction of the radiator, the extension direction of the first feed element being in the same direction as the extension direction of the radiator; a first feed circuit, the first feed element including a first feed point, the first feed circuit being coupled to the first feed point; wherein, the first feed element and the radiator are used to generate a first resonance and a second resonance, the first resonance and the second resonance being used to jointly support a first operating frequency band; the first feed circuit is used to feed a radio frequency signal of the first operating frequency band to the first feed element.

[0057] According to embodiments of this application, the radiator can form a radiator structure for a conformal linear antenna. When an electrical signal is fed into the first feed circuit, the antenna structure can generate a first resonance and a second resonance through the radiator and the first feed element. In electronic devices, compared to the radiator (which is a conductive portion in the frame), the first feed element has a poorer radiation environment (e.g., poor clearance, closer proximity to adjacent metal components). However, the first feed element can generate a new current path for the radiator, thereby generating a new resonance (e.g., a second resonance) to extend the operating bandwidth of the antenna structure.

[0058] Meanwhile, since the first and second ends of the radiator are open, a strong electric field and a weak current exist in the vicinity of these ends. Similarly, the first and second ends of the first feed element are also open, resulting in a strong electric field and a weak current in their vicinity. The region of the radiator with a strong electric field (weak magnetic field) is close to the region of the first feed element with a strong electric field (weak magnetic field), allowing coupling between them via electric field coupling (magnetic field coupling). Furthermore, the first and second resonances generated by the radiator and the first feed element are relatively balanced, preventing dips in radiation efficiency in the first operating frequency band supported by both resonances. This improves the radiation characteristics of the antenna structure and enhances the communication performance of the electronic equipment.

[0059] In conjunction with the third aspect, in some implementations of the third aspect, the second end of the first power supply is directly grounded or grounded through an inductive device; the length of the radiator between the projection of the second end of the first power supply on the frame and the grounding point is less than or equal to half the length of the first power supply.

[0060] In conjunction with the third aspect, in some implementations of the third aspect, the physical length L0 of the radiator and the physical length L1 of the first feeder satisfy: L0×25%≤L1≤L0×50%.

[0061] In conjunction with the third aspect, in some implementations of the third aspect, the ratio of the length of the overlapping portion of the projection of the first feeder on the frame and the radiator to the length of the first feeder is greater than or equal to 50%.

[0062] In conjunction with the third aspect, in some implementations of the third aspect, the distance D between the first feeder and the radiator is less than or equal to 5 mm.

[0063] In conjunction with the third aspect, in some implementations of the third aspect, the frame includes a grounding point located in a central region between the first position and the second position, and the frame is coupled to the floor at the grounding point.

[0064] In conjunction with the third aspect, in certain implementations of the third aspect, based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being less than or equal to 1 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz; based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz; based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 2 GHz and less than or equal to 3 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0065] Fourthly, an electronic device is provided, comprising the antenna structure described in any one of the first, second, and third aspects above. Attached Figure Description

[0066] Figure 1 is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0067] Figure 2 is a schematic diagram of the common-mode structure of an antenna provided in this application and the corresponding current and electric field distribution.

[0068] Figure 3 is a schematic diagram of the differential mode structure of an antenna provided in this application and the corresponding current and electric field distribution.

[0069] Figure 4 shows the structure of the common-mode antenna provided in this application and the corresponding distribution of current, electric field, and magnetic current.

[0070] Figure 5 shows the structure of the differential mode of the antenna provided in this application and the corresponding distribution of current, electric field and magnetic current.

[0071] Figure 6 is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0072] Figure 7 shows the S-parameter simulation results of the antenna structure 100 in the electronic device 10 shown in Figure 6.

[0073] Figure 8 shows the simulation results of the system efficiency and radiation efficiency of the antenna structure 100 in the electronic device 10 shown in Figure 6.

[0074] Figure 9 is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0075] Figure 10 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0076] Figure 11 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0077] Figure 12 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0078] Figure 13 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0079] Figure 14 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0080] Figure 15 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0081] Figure 16 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0082] Figure 17 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0083] Figure 18 shows the S-parameter simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 17.

[0084] Figure 19 shows the simulation results of the system efficiency and radiation efficiency of the antenna structure 200 in the electronic device 10 shown in Figure 17.

[0085] Figure 20 is a schematic diagram of the current distribution of the antenna shown in Figure 17 at the first resonance point (1.66 GHz).

[0086] Figure 21 is a schematic diagram of the current distribution of the antenna shown in Figure 17 at the resonance point (1.91 GHz) of the second resonance.

[0087] Figure 22 is a schematic diagram of the current distribution of the antenna shown in Figure 17 at the resonant point of the third resonance (2.27 GHz).

[0088] Figure 23 is a schematic diagram of the current distribution of the antenna shown in Figure 17 at the fourth resonance point (2.42 GHz).

[0089] Figure 24 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0090] Figure 25 shows the S-parameter simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 24.

[0091] Figure 26 shows the simulation results of the system efficiency and radiation efficiency of the antenna structure 200 in the electronic device 10 shown in Figure 24.

[0092] Figure 27 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0093] Figure 28 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0094] Figure 29 is a schematic diagram of another electronic device 10 provided in an embodiment of this application. Detailed Implementation

[0095] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0096] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0097] The phrase "within the range" used in this application, unless otherwise specified, includes both endpoints of the range by default. For example, in the range of 1 to 5, it includes the values ​​1 and 5.

[0098] Coupling can be understood as direct coupling and / or indirect coupling. "Coupled connection" can be understood as a direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection," which can be understood as physical contact and electrical conduction between components; it can also be understood as the form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Indirect coupling" can be understood as electrical conduction between two conductors through a gap / non-contact method. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gaps between two conductive parts.

[0099] Components / devices: including at least one of lumped components / devices and distributed components / devices.

[0100] Lumped components / devices: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For signals, the characteristics of these components remain constant regardless of frequency. Lumped components / devices can include lumped capacitors, lumped inductors, etc.

[0101] Distributed elements / devices: Unlike lumped elements, when a signal passes through an element, the characteristics of each point within the element will vary depending on the signal. Therefore, the element as a whole cannot be considered a single entity with fixed characteristics, and should be called a distributed element. Distributed elements / devices can include distributed capacitance, distributed inductance, etc.

[0102] Capacitance: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance includes capacitive components, such as capacitor elements; distributed capacitance (or distributed capacitance) includes the equivalent capacitance formed by two conductive components separated by a certain gap.

[0103] Inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance includes inductive components, such as inductive elements; distributed inductance (or distributed inductance) includes the equivalent inductance formed through a conductive element of a certain length, such as the equivalent inductance formed by a conductor due to bending or rotation.

[0104] Capacitive devices: can be understood as including one or more capacitors, or a combination of one or more capacitors and one or more inductors, or may also include a combination of other devices (such as resistors). The capacitive devices as a whole should be capacitive.

[0105] The radiator may include a conductor with a specific shape and size, such as a wire or sheet, and this application does not limit the specific shape. In one embodiment, the wire radiator may be simply referred to as a wire antenna. In one embodiment, the wire radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the wire radiator may be implemented by a support conductor, and may also be referred to as a support antenna. In one embodiment, the wire diameter (e.g., including thickness and width) of the wire radiator, or the radiator of the wire antenna, is much smaller than the wavelength (e.g., the wavelength of the medium) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the wavelength of the medium) (e.g., the length is around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of wire antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, in a dipole antenna, each dipole antenna typically includes two radiating stubs, each fed from the feed end of the radiating stub by a feed section. For example, an inverted-F antenna (IFA) can be considered as a monopole antenna with an added ground path. An IFA antenna has one feed point and one ground point, and is called an inverted-F antenna because its side view is inverted-F shaped. In one embodiment, the sheet radiator may include a microstrip antenna or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA). In one embodiment, the sheet radiator may be implemented using a planar conductor (e.g., a conductive sheet or conductive coating). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet. In one embodiment, the sheet radiator may include a conductive coating, such as silver paste. The shape of the sheet radiator includes circular, rectangular, and annular shapes, and this application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a ground plane, wherein the dielectric substrate is disposed between the radiator and the ground plane.

[0106] Radiators may also include slots or gaps formed on a conductor, for example, closed or semi-closed slots or gaps formed on a grounded conductor surface. In one embodiment, a slotted or slit radiator may be simply referred to as a slot antenna or a gap antenna. In one embodiment, the radial dimension (e.g., including width) of the slot or gap of the slot antenna / gap antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), while the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., a length of approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or gap may be simply referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or gap (e.g., an opening added to a closed slot or gap) may be simply referred to as an open slot antenna. In some embodiments, the gap shape is elongated. In some embodiments, the length of the gap is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the gap is approximately an integer multiple of a wavelength (e.g., one dielectric wavelength). In some embodiments, the slot can be fed by transmission lines connected across one or both sides, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a conductive frame grounded at both ends, also known as a frame antenna; in this embodiment, the slot antenna or gap antenna can be viewed as including a linear radiator, the linear radiator being spaced apart from the ground and grounded at both ends, thereby forming a closed or semi-closed slot or gap. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a support conductor grounded at both ends, also known as a support antenna.

[0107] A power supply circuit is a circuit used for receiving and / or transmitting radio frequency (RF) signals. A power supply circuit can include a transceiver and an RF front-end. In some narrower senses, "power supply circuit" refers to an RF IC (Radio Frequency Integrated Circuit), which can be considered to include both the RF front-end circuit (or RF front-end chip) and the transceiver. The power supply circuit has the function of converting radio waves (e.g., RF signals) into signals (e.g., digital signals). It is generally considered part of the RF component.

[0108] In some embodiments, the electronic device may also include a test socket (or, RF socket or RF test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the RF front-end circuitry or the radiator of the antenna. The RF front-end circuitry can be considered as the circuitry coupled between the test socket and the transceiver.

[0109] In some embodiments, the radio frequency front-end circuit can be integrated into a radio frequency front-end chip in an electronic device, or the radio frequency front-end circuit and the transceiver can be integrated into a radio frequency chip in an electronic device.

[0110] It should be understood that any two feed circuits in the first / second / ...Nth feed circuit of this application may include the same transceiver. For example, one transmit channel of a transceiver may serve as the first feed circuit and one receive channel may serve as the second feed circuit, or for example, the first receive channel of a transceiver may serve as the first feed circuit and the second receive channel may serve as the second feed circuit. Any two feed circuits in the first / second / ...Nth feed circuit of this application may also include the same radio frequency front-end circuit, for example, the signal may be processed by a tuning circuit or amplifier in a radio frequency front-end circuit.

[0111] It should also be understood that the two feed circuits in the first / second / ...Nth feed circuit of this application typically correspond to two RF test sockets in an electronic device.

[0112] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In another embodiment, the matching circuit is coupled between the test mount and the radiator. Typically, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit may include a tuning circuit and / or electronic components, which may be electronic components for switching the coupling connection of the radiator. The matching circuit has impedance matching and / or frequency tuning functions. It is typically considered part of the antenna.

[0113] The grounding / feeding structure may include connectors, such as metal springs, and the radiator is coupled to the ground / feeding circuit via the grounding structure. In some embodiments, the feeding structure may include a transmission line / feeding wire, and the grounding structure may include a grounding wire.

[0114] End / Point: The term "end / point" in the context of the antenna radiator's first end / second end / feed end / ground end / feed point / grounding point / connection point should not be narrowly interpreted as necessarily being a point or end physically disconnected from other radiators. It can also be considered as a point or segment on a continuous radiator. In one embodiment, "end / point" can include a connection / coupling region on the antenna radiator that couples to other conductive structures. For example, a feed end / feed point can be a connection / coupling region on the antenna radiator that couples to a feed structure or feed circuit (e.g., a region facing a part of the feed circuit). Similarly, a ground end / grounding point can be a connection / coupling region on the antenna radiator that couples to a ground structure or ground circuit (e.g., a region facing a part of the ground circuit).

[0115] Open terminal, closed terminal: In some embodiments, open terminal and closed terminal are, for example, relative to whether or not they are grounded; the closed terminal is grounded, and the open terminal is not grounded. In some embodiments, open terminal and closed terminal are, for example, relative to other conductors; the closed terminal is electrically connected to other conductors, and the open terminal is not electrically connected to other conductors. In one embodiment, the open terminal may also be referred to as a floating terminal, free terminal, open terminal, or open-circuit terminal. In one embodiment, the closed terminal may also be referred to as a ground terminal or short-circuit terminal. It should be understood that in some embodiments, other conductors can be coupled through the open terminal to transfer coupled energy (which can be understood as transferring current).

[0116] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution. A closed end or ground end can be understood as a point of high current or low electric field on a radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through a closed end can maintain the current distribution characteristics of the point of high current / low electric field. In one embodiment, opening a slit at or near the closed end (e.g., filling the slit with insulating material) can maintain the current distribution characteristics of the point of high current / low electric field.

[0117] In some embodiments, the understanding of "open terminal" can also be from the perspective of current distribution. An open terminal or a floating terminal can be understood as a point with a small current or a point with a large electric field on the radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through an open terminal can maintain the current distribution characteristics of the point with a small current or a large electric field.

[0118] It should be understood that when an electronic device (e.g., capacitor, inductor, etc.) is coupled at the radiator end of a gap (which, from the perspective of the radiator's structure, is similar to the radiator at the opening of an open or floating end), the radiator end can be a point with a large current / small electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0119] The "floating radiator" mentioned in the embodiments of this application refers to a radiator that is not directly connected to the feed line / feed branch and / or ground line / ground branch, but is fed and / or grounded through indirect coupling.

[0120] It should be understood that "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator may be, for example, a radiator disposed on the inner surface of an insulating back cover.

[0121] The current in the same direction / opposite direction mentioned in the embodiments of this application should be understood as the main current on the same side of the conductor being in the same direction / opposite direction. For example, when a current distributed in the same direction is excited on a conductor that is bent or looped (e.g., the current path is also bent or looped), it should be understood that, for example, the main current excited on the conductors on both sides of a looped conductor (e.g., on the conductors on both sides of a gap) is opposite in direction, but it still falls under the definition of current distributed in the same direction in the embodiments of this application. In one embodiment, current in the same direction on a conductor can mean that the current on the conductor has no reverse point. In one embodiment, current in opposite direction on a conductor can mean that the current on the conductor has at least one reverse point. In one embodiment, current in the same direction on two conductors can mean that the current on both conductors has no reverse point and flows in the same direction. In one embodiment, current in opposite direction on two conductors can mean that the current on both conductors has no reverse point and flows in opposite directions. Current in the same direction / opposite direction on multiple conductors can be understood accordingly.

[0122] The "same direction / opposite direction" of electric fields mentioned in the embodiments of this application should be understood as the direction of the main electric field generated by the conductor in space (e.g., the electric field between the conductor and the ground) being the same direction / opposite direction. For example, when a unidirectionally distributed electric field is excited on a conductor that is bent or ring-shaped (e.g., the gap formed between the ground and the conductor is also bent or ring-shaped), it should be understood that, for example, the direction of the electric field in the gap is from the ground to the conductor, or from the conductor to the ground. Although the main electric field excited in the gaps on both sides of the ring-shaped conductor (e.g., the gaps on both sides of the gap surrounding a slit) is opposite in direction, it still falls under the definition of a unidirectionally distributed electric field in the embodiments of this application. In one embodiment, a unidirectional electric field between a conductor and the ground can mean that the electric field between the conductor and the ground has no opposite point. In one embodiment, an opposite electric field between a conductor and the ground can mean that the electric field between the conductor and the ground has at least one opposite point. In one embodiment, a unidirectional electric field between two conductors and the ground can mean that the electric fields between the two conductors and the ground have no opposite points and radiate in the same direction (e.g., the positive z-axis). In one embodiment, the opposite electric fields between two conductors and the ground can mean that the electric fields between the two conductors and the ground have no point of reversal and flow in opposite directions. Correspondingly, the same / opposite electric fields between multiple conductors and the ground can be understood.

[0123] Resonance / Resonant Frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, when the antenna / radiator mentioned in this application generates "first / second...resonance," the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to a specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0124] Resonant frequency band: The range of resonant frequencies is the resonant frequency band. The return loss characteristics at any frequency point within the resonant frequency band can be less than -6dB or -5dB.

[0125] Communication band / operating band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna supporting the B40 band operates within the frequency range of 2300MHz to 2400MHz, or in other words, the antenna's operating band includes the B40 band. The frequency range that meets the specifications can be considered the antenna's operating band.

[0126] The resonant frequency band and the operating frequency band can be the same or can partially overlap. In one embodiment, one or more resonant frequency bands of the antenna can cover one or more operating frequency bands of the antenna.

[0127] Electrical length: can be the ratio of physical length (i.e., mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. Electrical length can satisfy the following formula:

[0128] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0129] Wavelength: or operating wavelength, can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink band (resonant frequency from 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using this frequency. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or operating frequency band.

[0130] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (air wavelength, or vacuum wavelength) = speed of light / frequency, where the frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3 × 10⁻⁶. 8 m / s. The wavelength of the radiated signal in the medium can be calculated as follows: medium Where ε is the relative permittivity of the medium. The wavelength in the embodiments of this application typically refers to the medium wavelength, which can be the medium wavelength corresponding to the center frequency of the resonant frequency, or the medium wavelength corresponding to the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink band (resonant frequency of 1920MHz to 1980MHz) is 1955MHz, then the wavelength can be the medium wavelength calculated using this frequency. Not limited to the center frequency, the "medium wavelength" can also refer to the medium wavelength corresponding to the non-center frequency of the resonant frequency or operating frequency band. For ease of understanding, the medium wavelength mentioned in the embodiments of this application can be simply calculated using the relative permittivity of the medium filling one or more sides of the radiator.

[0131] Length: refers to physical length or measured length. It should be understood that the "length" mentioned in the embodiments of this application is different from "electrical length". Among them, "length of radiator" should be understood as equivalent to "physical length of radiator", and the length of other structures in the embodiments of this application should also be understood in the same way.

[0132] Those skilled in the art will understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between it and dB. The closer the efficiency is to 0dB, the better the efficiency of the antenna.

[0133] Antenna radiation pattern: also known as radiation pattern. It refers to the graph showing the relative field strength (normalized modulus) of the antenna's radiated field as a function of direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular planar radiation patterns passing through the direction of maximum radiation of the antenna.

[0134] Antenna radiation patterns typically have multiple radiating beams. The beam with the highest radiating intensity is called the main lobe, and the remaining beams are called side lobes. Among the side lobes, the side lobe in the opposite direction to the main lobe is also called the back lobe.

[0135] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0136] Antenna radiation efficiency refers to the ratio of the power radiated into space by an antenna (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Active power input to the antenna = antenna input power - loss power; loss power mainly includes return loss power and ohmic loss power of metals and / or dielectric loss power. Radiation efficiency is a measure of an antenna's radiation capability; metal loss and dielectric loss are both factors affecting radiation efficiency.

[0137] Those skilled in the art will understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between it and dB. The closer the efficiency is to 0dB, the better the efficiency of the antenna.

[0138] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port after passing through the antenna circuit to the transmit power at the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the higher the antenna's radiation efficiency. Conversely, the larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the antenna's radiation efficiency.

[0139] Antenna return loss can be represented by the S11 parameter, which is one of the S-parameters. S11 represents the reflection coefficient, and this parameter characterizes the antenna's transmission efficiency. The S11 parameter is usually negative. The smaller the S11 parameter, the smaller the antenna return loss, the less energy the antenna reflects back, which means more energy actually enters the antenna, and the higher the antenna's system efficiency. Conversely, the larger the S11 parameter, the greater the antenna return loss, and the lower the antenna's system efficiency.

[0140] It should be noted that in engineering, an S11 value of -6dB is generally used as the standard. When the S11 value of an antenna is less than -6dB, the antenna can be considered to be working normally, or the antenna can be considered to have good transmission efficiency.

[0141] Ground (GND): Generally refers to at least a portion of any grounding layer, ground plane, or grounding metal layer within an electronic device (such as a mobile phone), or at least a portion of any combination of the aforementioned grounding layers, ground planes, or grounding components. "Ground" can be used for grounding components within an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board in an electronic device, or a grounding metal layer formed by a ground plane formed within the frame of the electronic device or a metal film formed beneath the screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric or insulating layers such as fiberglass or polymers. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a trace layer, with the trace layer and grounding layer electrically connected via vias. In one embodiment, components such as displays, touchscreens, input buttons, transmitters, processors, memory, batteries, charging circuits, and system-on-chip (SoC) architectures can be mounted on or connected to a circuit board; or electrically connected to trace layers and / or ground layers in the circuit board. For example, an RF source is disposed on a trace layer.

[0142] Any of the aforementioned grounding layers, ground planes, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material may be any of the following: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate and tin-plated copper, graphite-impregnated cloth, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. Those skilled in the art will understand that grounding layers / ground planes / grounding metal layers may also be made of other conductive materials.

[0143] Grounding: refers to coupling with the aforementioned ground / floor in any way. In one embodiment, grounding can be achieved through physical grounding, such as through a structural component of the mid-frame to achieve a physical ground at a specific location on the frame (or, physical ground). In another embodiment, grounding can be achieved through device grounding, such as through devices like capacitors / inductors / resistors connected in series or parallel (or, device ground).

[0144] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings.

[0145] As shown in Figure 1, the electronic device 10 may include: a cover 13, a display / module 15, a printed circuit board (PCB) 17, a middle frame 19, and a rear cover 21. It should be understood that in some embodiments, the cover 13 may be a glass cover, but it may also be replaced with a cover made of other materials, such as a PET (Polyethylene terephthalate) cover.

[0146] The cover plate 13 can be set close to the display module 15, and can be mainly used to protect the display module 15 from dust.

[0147] In one embodiment, the display module 15 may include a liquid crystal display (LCD), a light emitting diode (LED) display panel, or an organic light-emitting diode (OLED) display panel, etc., and this application embodiment does not limit this.

[0148] The mid-frame 19 primarily serves to support the entire device. Figure 1 shows the PCB 17 positioned between the mid-frame 19 and the rear cover 21. It should be understood that in one embodiment, the PCB 17 may also be positioned between the mid-frame 19 and the display module 15; this application does not limit this. The printed circuit board PCB 17 can be made of flame-retardant material (FR-4) dielectric substrate, Rogers dielectric substrate, or a hybrid dielectric substrate of Rogers and FR-4, etc. Here, FR-4 is a designation for a flame-retardant material grade, and Rogers dielectric substrate is a high-frequency board. Electronic components, such as radio frequency chips, are carried on the PCB 17. In one embodiment, a metal layer can be disposed on the printed circuit board PCB 17. This metal layer can be used for grounding the electronic components carried on the printed circuit board PCB 17, or for grounding other components, such as bracket antennas, frame antennas, etc. This metal layer can be called a ground plane, grounding plate, or grounding layer. In one embodiment, this metal layer can be formed by etching metal onto the surface of any dielectric substrate in the PCB 17. In one embodiment, the metal layer for grounding may be disposed on the printed circuit board PCB 17 near the middle frame 19. In one embodiment, the edge of the printed circuit board PCB 17 may be considered as the edge of its ground layer. In one embodiment, the metal middle frame 19 may also be used for grounding the aforementioned components. The electronic device 10 may also have other ground / grounding / grounding layers, as previously described, and will not be repeated here.

[0149] Due to the compact nature of electronic devices, a ground plane / grounding layer is typically provided in the internal space 0-2mm from the inner surface of the frame (e.g., printed circuit boards, mid-frames, screen metal layers, batteries, etc. can all be considered part of the ground plane). In one embodiment, a medium is filled between the frame and the ground plane. The length and width of the rectangle formed by the inner surface contour of the filling medium can be simply considered as the length and width of the ground plane; alternatively, the length and width of the rectangle formed by the superimposed contour of all conductive parts inside the frame can be considered as the length and width of the ground plane.

[0150] The electronic device 10 may also include a battery (not shown in the figure). The battery may be disposed between the middle frame 19 and the back cover 21, or between the middle frame 19 and the display module 15; this embodiment does not limit this. In some embodiments, the PCB 17 is divided into a motherboard and a daughterboard, and the battery may be disposed between the motherboard and the daughterboard. The motherboard may be disposed between the middle frame 19 and the upper edge of the battery, and the daughterboard may be disposed between the middle frame 19 and the lower edge of the battery.

[0151] The electronic device 10 may also include a frame 11, which may include a conductive material such as metal. The frame 11 may be disposed between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 10. The frame 11 may have four sides surrounding the display module 15 to help secure the display module 15.

[0152] In one implementation, the frame 11, primarily composed of conductive material, can be referred to as the conductive frame or metal frame of the electronic device 10, suitable for industrial design (ID) with a metallic appearance. In another implementation, the outer surface of the frame 11 is primarily made of conductive material, such as metal, thus forming the appearance of a metallic frame. In these implementations, the conductive portion of the outer surface of the frame 11 can be used as an antenna radiator of the electronic device 10, and is commonly referred to as a frame antenna.

[0153] In another implementation, the outer surface of the frame 11 is primarily made of a non-conductive material, such as plastic, forming a non-metallic frame appearance suitable for non-metallic IDs. In another implementation, the inner surface of the frame 11 may include a conductive material, such as a metallic material. In this implementation, the conductive portion of the inner surface of the frame 11 can be used as an antenna radiator of the electronic device 10. It should be understood that the radiator (or the conductive material of the inner surface) disposed on the inner surface of the frame 11 can be attached to the non-conductive material of the frame 11 to minimize the volume occupied by the radiator and to be closer to the outside of the electronic device 10, achieving better signal transmission performance, and can also be referred to as a frame antenna. It should be noted that the antenna radiator being attached to the non-conductive material of the frame 11 means that the antenna radiator can be tightly attached to the inner surface of the non-conductive material, or it can be embedded inside the non-conductive material, or it can be close to the inner surface of the non-conductive material. For example, there can be a small gap between the antenna radiator and the inner surface of the non-conductive material. It should be understood that both the conductive material and the non-conductive material can be considered as part of the frame 11.

[0154] It should be understood that insulating gaps may be present on the frame 11, with the conductive portion of the frame between the insulating gaps and / or between the insulating gaps and the grounding point serving as radiators, thereby forming a frame antenna (it should be understood that the radiator of the frame antenna may also include the conductive portion of the frame between the grounding point and the grounding point). When the frame 11 is formed of a conductive material such as metal, the insulating gap can be understood as a gap opened (having) in the frame 11 filled with a non-metallic material (insulating material), in which case the gap is visible on the outer surface. When the outer surface of the frame 11 is a non-conductive material, the insulating gap can be understood as the end of the radiator on the inner surface of the frame 11 (e.g., an end not electrically connected to other radiators or conductors), or as a gap formed between radiators on the inner surface of the frame 11, in which a non-metallic material (insulating material) may be provided, or it may not be provided with a non-metallic material, for example, filled with air, in which case the gap is not visible on the outer surface.

[0155] In Figure 1 and subsequent embodiments, the electronic device 10 is illustrated using a metal frame (conductive frame) and a visible slit (insulating gap). In this case, the metal frame serves as at least part of the antenna radiator. It should be understood that the same technical effect can be achieved when the frame 11 of the electronic device 10 is a non-metallic frame (a slit not visible on the surface), but for the sake of brevity, it will not be elaborated further.

[0156] The middle frame 19 may include the frame 11. The middle frame 19, including the frame 11, is a single unit that supports the electronic components in the device. The cover plate 13 and the rear cover 21 respectively cover the upper and lower edges of the frame to form the housing of the electronic device. In one embodiment, the cover plate 13, the rear cover 21, the frame 11, and / or the middle frame 19 may be collectively referred to as the housing of the electronic device 10. It should be understood that "housing" may refer to part or all of any one of the cover plate 13, the rear cover 21, the frame 11, or the middle frame 19, or to any combination of the cover plate 13, the rear cover 21, the frame 11, or the middle frame 19.

[0157] The frame 11 can at least partially serve as an antenna radiator to transmit / receive radio frequency signals. This portion of the frame serving as the radiator may have gaps between it and the rest of the middle frame 19, thereby ensuring a good radiation environment for the antenna radiator. In one embodiment, the middle frame 19 may have an aperture at this portion of the frame serving as the radiator to facilitate antenna radiation.

[0158] Alternatively, the frame 11 may not be considered part of the middle frame 19. In one embodiment, the frame 11 may be connected to and integrally formed with the middle frame 19. In another embodiment, the frame 11 may include inwardly extending protrusions to connect with the middle frame 19, for example, by means of spring clips, screws, welding, etc. The protrusions of the frame 11 can also be used to receive feed signals, so that at least a portion of the frame 11 acts as a radiator of the antenna to transmit / receive radio frequency signals. A gap may exist between this portion of the frame acting as the radiator and the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment, enabling the antenna to have good signal transmission capabilities.

[0159] The back cover 21 can be made of metal; it can also be made of non-conductive material, such as a glass back cover, a plastic back cover, or other non-metallic back cover; or it can be made of both conductive and non-conductive materials. In one embodiment, the back cover 21, which includes conductive material, can replace the middle frame 19 and form an integral part with the frame 11, providing support for the electronic components in the whole device.

[0160] In one embodiment, conductive portions in the mid-frame 19 and / or rear cover 21 can serve as a reference ground for the electronic device 10, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the mid-frame.

[0161] The antenna of the electronic device 10 can also be housed within a housing, such as a bracket antenna, a millimeter-wave antenna, etc. (not shown in Figure 1). The clearance of the antenna housed within the housing can be obtained by a slot / aperture on any of the middle frame, and / or bezel, and / or back cover, and / or display screen, or by a non-conductive gap / aperture formed between any of these. This clearance configuration ensures the antenna's radiation characteristics. It should be understood that the antenna clearance can be a non-conductive area formed by any conductive component within the electronic device 10, through which the antenna radiates signals to the external space. In one embodiment, the antenna 40 can be a flexible printed circuit (FPC) based antenna, a laser-direct-structuring (LDS) based antenna, or a microstrip disk antenna (MDA), etc. In one embodiment, the antenna can also be a transparent structure embedded within the screen of the electronic device 10, making it a transparent antenna unit embedded within the screen of the electronic device 10.

[0162] Figure 1 only schematically shows some of the components included in the electronic device 10, and the actual shape, size and construction of these components are not limited by Figure 1.

[0163] It should be understood that in the embodiments of this application, the side where the display screen of the electronic device is located can be considered as the front, the side where the back cover is located as the back, and the side where the frame is located as the side.

[0164] First, Figures 2 to 5 illustrate the four antenna modes involved in this application. Figure 2 shows the structure of the common-mode antenna provided in this application and a schematic diagram of the corresponding current and electric field distribution. Figure 3 shows the structure of the differential-mode antenna provided in this application and a schematic diagram of the corresponding current and electric field distribution. In Figures 2 and 3, the antenna radiators are open at both ends; their common-mode and differential-mode modes can be referred to as line common-mode and line differential-mode, respectively. Figure 4 shows the structure of the common-mode antenna provided in this application and a schematic diagram of the corresponding current, electric field, and magnetic current distribution. Figure 5 shows the structure of the differential-mode antenna provided in this application and a schematic diagram of the corresponding current, electric field, and magnetic current distribution. In Figures 4 and 5, the antenna radiators are grounded at both ends; their common-mode and differential-mode modes can be referred to as slot common-mode and slot differential-mode, respectively.

[0165] It should be understood that the "common mode" or "CM mode" in this application includes line common mode and slot common mode, while the "differential mode" or "DM mode" in this application includes line differential mode and slot differential mode, which can be determined according to the antenna structure.

[0166] It should be understood that the "common-differential mode" or "CM-DM mode" in this application refers to the line common mode and line differential mode generated on the same radiator, or the slot common mode and slot differential mode generated on the same radiator, which can be determined according to the antenna structure.

[0167] 1. Common mode (CM) mode

[0168] Figure 2(a) shows an antenna 40 with open ends to the radiator and a feed circuit (not shown) connected at the middle position 41. In one embodiment, the antenna 40 is fed in a symmetrical feed configuration. The feed circuit can be connected to the middle position 41 of the antenna 40 via a feed wire 42. It should be understood that a symmetrical feed can be understood as one end of the feed circuit being connected to the radiator and the other end being grounded, wherein the connection point between the feed circuit and the radiator (the feed point) is located at the center of the radiator, which may be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or a certain area within a certain range near the aforementioned midpoint).

[0169] The middle position 41 of the antenna 40 may be, for example, the geometric center of the antenna, or the midpoint of the electrical length of the radiator, such as the connection point between the feed line 42 and the antenna 40, which covers the middle position 41.

[0170] Figure 2(b) shows the current and electric field distribution of antenna 40. As shown in Figure 2(b), the current exhibits an opposite distribution on both sides of the central position 41, for example, a symmetrical distribution; the electric field exhibits a same-direction distribution on both sides of the central position 41. As shown in Figure 2(b), the current at the feed line 42 exhibits a same-direction distribution. Based on the same-direction current distribution at the feed line 42, the feeding method shown in Figure 2(a) can be called a line CM feed. Based on the opposite current distribution on both sides of the connection between the radiator and the feed line 42, the antenna mode shown in Figure 2(b) can be called a line CM mode (or simply CM mode; for example, for a line antenna, CM mode refers to the line CM mode). The current and electric field shown in Figure 2(b) can be referred to as the current and electric field of the line CM mode, respectively.

[0171] The current is stronger at the middle position 41 of antenna 40 (the current is larger near the middle position 41 of antenna 40), and weaker at both ends of antenna 40, as shown in Figure 2(b). The electric field is weaker at the middle position 41 of antenna 40, and stronger at both ends of antenna 40.

[0172] 2. Differential mode (DM)

[0173] As shown in Figure 3(a), the two radiators of antenna 50 have open ends on both sides, and a feed circuit is connected at the middle position 51. In one embodiment, the antenna 50 is fed using an anti-symmetrical feed. One end of the feed circuit is connected to one of the radiators via a feed wire 52, and the other end of the feed circuit is connected to the other radiator via a feed wire 52. The middle position 51 can be the geometric center of antenna 50, or the gap formed between the radiators.

[0174] It should be understood that the "center-antisymmetric feeding" mentioned in this application can be understood as the positive and negative poles of the feeding unit being connected to two connection points near the midpoint of the radiator. In one embodiment, the signal amplitudes output by the positive and negative poles of the feeding unit are the same, but the phases are opposite, for example, the phase difference is 180°±10°.

[0175] Figure 3(b) shows the current and electric field distribution of antenna 50. As shown in Figure 3(b), the current is distributed in the same direction on both sides of the middle position 51 of antenna 50, for example, an antisymmetric distribution; the electric field is distributed in opposite directions on both sides of the middle position 51. As shown in Figure 3(b), the current at the feed line 52 is distributed in opposite directions. Based on the opposite current distribution at the feed line 52, the feeding method shown in Figure 3(a) can be called a line DM feed. Based on the current being distributed in the same direction on both sides of the connection between the radiator and the feed line 52, the antenna mode shown in Figure 3(b) can be called a line DM mode (or simply DM mode; for example, for a line antenna, DM mode refers to the line DM mode). The current and electric field shown in Figure 3(b) can be referred to as the current and electric field of the line DM mode, respectively.

[0176] The current is stronger at the middle position 51 of antenna 50 (the current is larger near the middle position 51 of antenna 50), and weaker at both ends of antenna 50, as shown in Figure 3(b). The electric field is weaker at the middle position 51 of antenna 50, and stronger at both ends of the linear antenna 50.

[0177] It should be understood that an antenna radiator can be considered as a metal structural component that generates radiation. The number of radiators can be one, as shown in Figure 2, or two, as shown in Figure 3, depending on actual design or production needs. For example, in a linear CM mode, two radiators can be used as shown in Figure 3, with their ends facing each other and separated by a gap. Symmetrical feeding is used at the two ends that are close to each other; for example, feeding the same feed source signal at the two ends that are close to each other can achieve a similar effect to the antenna structure shown in Figure 2. Correspondingly, in a linear DM mode, one radiator can be used as shown in Figure 2, with two feed points located in the middle of the radiator and anti-symmetrical feeding. For example, feeding signals with the same amplitude but opposite phase to the two symmetrical feed points on the radiator can achieve a similar effect to the antenna structure shown in Figure 3.

[0178] 3. Line CM-DM mode

[0179] Figures 2 and 3 above show the line CM mode and line DM mode generated by different feeding methods when both ends of the radiator are open.

[0180] When the antenna is fed asymmetrically (the feed point is off-center from the radiator, including side-feed or offset feed), or when the grounding point of the radiator (coupled to the ground) is asymmetrical (off-center from the radiator), the antenna can simultaneously generate a first resonance and a second resonance, corresponding to the line CM mode and the line DM mode, respectively. For example, the first resonance corresponds to the line CM mode, and the current and electric field distribution is shown in Figure 2(b). The second resonance corresponds to the line DM mode, and the current and electric field distribution is shown in Figure 3(b).

[0181] 4. Slot CM mode

[0182] Figure 4(a) shows an antenna 60 with a slot or slit 61 in its radiator, or the radiator of the antenna 60 and ground (e.g., a floor, which could be a PCB) enclosing the slot or slit 61. The slot 61 can be formed by slotting in the floor. An opening 62 is provided on one side of the slot 61, specifically at the middle of that side. The middle of that side of the slot 61 can be, for example, the geometric midpoint of the antenna 60, or the midpoint of the electrical length of the radiator, for example, the area where the opening 62 is located on the radiator covers the middle of that side. A feed circuit can be connected to the opening 62, and an antisymmetric feed can be used. It should be understood that antisymmetric feeding can be understood as the positive and negative poles of the feed circuit being connected to the two ends of the radiator, respectively. The signal amplitudes output by the positive and negative poles of the feed circuit are the same, but the phases are opposite, for example, a phase difference of 180° ± 10°.

[0183] Figure 4(b) illustrates the current, electric field, and magnetic current distribution of antenna 60. As shown in Figure 4(b), the current is unidirectionally distributed around slot 61 on the conductors (e.g., the ground plane, and / or radiator 60) surrounding slot 61, the electric field is anti-directionally distributed on both sides of the middle position of slot 61, and the magnetic current is anti-directionally distributed on both sides of the middle position of slot 61. As shown in Figure 4(b), the electric field and magnetic current at the opening 62 (e.g., the feed point) are unidirectionally distributed. Based on the unidirectional magnetic current at the opening 62 (feed point), the feed shown in Figure 4(a) can be called slot CM feed. Based on the unidirectional distribution of current on the radiators on both sides of opening 62 (e.g., antisymmetric distribution), or based on the unidirectional distribution of current around slot 61 on the conductors surrounding slot 61, the antenna mode shown in Figure 4(b) can be called slot CM mode (or simply CM mode; for example, for a slot antenna, CM mode refers to slot CM mode). The electric field, current, and magnetic flux distribution shown in Figure 4(b) can be referred to as the electric field, current, and magnetic flux of the slot CM mode.

[0184] The magnetic field is weaker at the middle of antenna 60 and stronger at both ends of antenna 60. The electric field is stronger at the middle of antenna 60 (the point of maximum electric field is located near the middle of antenna 60) and weaker at both ends of antenna 60, as shown in Figure 4(b).

[0185] 5. Slot DM Mode

[0186] As shown in Figure 5(a), the radiator of the antenna 70 has a hollowed-out slot or gap 72, or the slot or gap 72 may be formed by the radiator of the antenna 70 and ground (e.g., a floor, which may be a PCB). The slot 72 can be formed by slotting in the floor. A feed circuit is connected at the middle position 71 of the slot 72, and symmetrical feeding is used. It should be understood that symmetrical feeding can be understood as one end of the feed circuit being connected to the radiator and the other end being grounded, wherein the connection point between the feed circuit and the radiator (feed point) is located at the center of the radiator, which may be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or a certain range near the aforementioned midpoint). The middle position of one side of the slot 72 is connected to the positive terminal of the feed circuit, and the middle position of the other side of the slot 72 is connected to the negative terminal of the feed circuit. The middle position of the side of slot 72 can be, for example, the middle position of slot antenna 60 / the middle position of ground, such as the geometric midpoint of slot antenna, or the midpoint of the electrical length of radiator, such as the middle position 51 of the side covered by the connection between the feed circuit and the radiator.

[0187] Figure 5(b) shows the current, electric field, and magnetic current distribution of antenna 70. As shown in Figure 5(b), on the conductors (such as the ground plane and / or radiator 60) surrounding slot 72, the current is distributed around slot 72, and the current is distributed in opposite directions on both sides of the middle position of slot 72. The electric field is distributed in the same direction on both sides of the middle position 71, and the magnetic current is distributed in the same direction on both sides of the middle position 71. The magnetic current at the feed circuit is distributed in opposite directions (not shown). Based on the opposite magnetic current distribution at the feed circuit, the feed shown in Figure 5(a) can be called slot DM feed. Based on the opposite current distribution (e.g., symmetrical distribution) on both sides of the connection between the feed circuit and the radiator, or based on the opposite current distribution (e.g., symmetrical distribution) around slot 71, the antenna mode shown in Figure 5(b) can be called slot DM mode (or simply DM mode, for example, for slot antennas, DM mode refers to slot DM mode). The electric field, current, and magnetic current distribution shown in Figure 5(b) can be called the electric field, current, and magnetic current of slot DM mode.

[0188] The current is weaker at the middle of antenna 70 and stronger at both ends of antenna 70. The electric field is stronger at the middle of antenna 70 (the largest electric field is located near the middle of antenna 60) and weaker at both ends of slot antenna 70, as shown in Figure 5(b).

[0189] It should be understood that the radiator of an antenna can be understood as a metal structural component that generates radiation (e.g., including part of the floor). It can include openings, as shown in Figure 4, or it can be a complete ring, as shown in Figure 5, and can be adjusted according to actual design or production needs. For example, for the slot CM mode, a complete ring radiator can also be used as shown in Figure 5. Two feed points are set at the middle position of the radiator on one side of the slot 61, and an anti-symmetrical feeding method is used. For example, signals with the same amplitude but opposite phase are fed into both ends of the original opening position, which can also achieve an effect similar to the antenna structure shown in Figure 4. Correspondingly, for the slot DM mode, a radiator including an opening can also be used as shown in Figure 4, with symmetrical feeding at both ends of the opening position. For example, the same feed source signal is fed into both ends of the radiators on both sides of the opening, which can also achieve an effect similar to the antenna structure shown in Figure 5.

[0190] 6. Slotted CM-DM mode

[0191] Figures 4 and 5 above show the generation of the CM mode and DM mode of the slot structure using different power feeding methods.

[0192] When the antenna is fed asymmetrically (the feed point deviates from the center position, including side-feed or offset feed), or the opening on one side of the slot is asymmetrical (the opening deviates from the center position on that side), the antenna can simultaneously generate a first resonance and a second resonance, corresponding to the slot CM mode and slot DM mode, respectively. For example, the first resonance corresponds to the slot CM mode, and the current, electric field, and magnetic current distributions are shown in Figure 4(b). The second resonance corresponds to the slot DM mode, and the current, electric field, and magnetic current distributions are shown in Figure 5(b).

[0193] Since the above antenna structures can generate two operating modes (the electric field is orthogonal (the electric field product in the far field is zero, which is an integral orthogonal distribution)) with symmetrical or antisymmetric electric field distribution, the isolation between the two operating modes of this antenna structure is good, and it can be applied to multi-input multi-output (MIMO) antenna systems in electronic devices.

[0194] Meanwhile, when the two antenna structures operate in two different modes (the electric field is symmetrically distributed or antisymmetrically distributed) with orthogonal electric fields (the electric field product in the far field is zero (integral orthogonal)), the two antenna structures also have good isolation and can be used as sub-units in MIMO antenna systems in electronic devices.

[0195] It should be understood that the two antenna structures can be interpreted as antenna structures fed with signals by a first feed circuit and a second feed circuit, respectively. The first feed circuit and the second feed circuit are different. In electronic devices, the first feed circuit and the second feed circuit can be different radio frequency channels in a radio frequency IC (RF IC).

[0196] Figure 6 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0197] As shown in Figure 6, the electronic device 10 may include an antenna structure 100.

[0198] The conductive frame 11 of the electronic device 10 may include a first position 101 and a second position 102. The frame 11 has a first insulating gap and a second insulating gap at the first position 101 and the second position 102, respectively. The frame 11 also includes a ground point between the first position 101 and the second position 102, the ground point being coupled to a ground plane. The radiator 103 of the antenna structure 100 is the conductive portion between the first position 101 and the second position 102.

[0199] The antenna structure 100 may further include a feed circuit and components. The radiator 103 may include a first connection point and a second connection point. The first connection point is located between a first position 101 and a ground point, and the second connection point is located between a second position 102 and a ground point. The feed circuit is coupled to the first connection point. A first end of the component is coupled to the second connection point, and a second end is coupled to the ground plane.

[0200] When an electrical signal is fed into the feeding circuit, the antenna structure 100 can operate in the aforementioned line CM-DM mode. By using components, the resonant points of the resonances generated in the line CM mode and the line DM mode can be brought closer together, forming a common resonant frequency band, thereby extending the operating bandwidth of the antenna structure 100. In one embodiment, the components can shift the frequency of the resonance generated in the line DM mode to a lower frequency.

[0201] Figures 7 and 8 show the simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 6. Figure 7 shows the S-parameter simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 6. Figure 8 shows the simulation results of the system efficiency and radiation efficiency of the antenna structure 200 in the electronic device 10 shown in Figure 6.

[0202] As shown in Figure 7, the antenna structure 100 can generate resonances near 1.7 GHz and 2 GHz. The resonance generated near 1.7 GHz can correspond to the line CM mode, and the resonance generated near 2 GHz can correspond to the line DM mode.

[0203] As shown in Figure 8, when antenna structure 100 operates in linear CM mode, a current mode exists on the ground plane, while linear DM mode is mainly radiated by the radiator. Therefore, the radiation efficiency of linear CM mode is higher than that of linear DM mode. When the resonance generated by linear CM mode and linear DM mode is used to extend the operating bandwidth of antenna structure 100, due to the lower radiation efficiency of linear DM mode, a pit will be generated near the resonance generated by linear DM mode, resulting in a narrow bandwidth of system efficiency (taking system efficiency > -2dB as an example), only 400MHz.

[0204] Furthermore, the current distribution generated by the linear CM mode and the current distribution generated by the linear DM mode on the radiator 103 differ significantly, causing abrupt changes in the radiation and impedance characteristics of the antenna structure 100. Consequently, the antenna structure 100 does not possess consistent radiation and impedance characteristics within the shared resonant frequency band. For example, the radiation patterns generated by the linear CM mode and the linear DM mode of the antenna structure 100 are different, resulting in different radiation patterns within the shared resonant frequency band. Within the same frequency band, the abrupt changes in the radiation characteristics of the antenna structure 100 during communication between the electronic device and the signal source will degrade the communication performance between the electronic device and the signal source.

[0205] This application provides an antenna structure and its electronic device. The antenna structure utilizes the conductive portion of its frame as a radiator. The antenna structure feeds an electrical signal to the radiator via indirect coupling through a first feed element and a second feed element. The feed element and the radiator are used to generate multiple resonances to form two resonant frequency bands, thereby expanding the bandwidth. Furthermore, the antenna structure exhibits good radiation efficiency and system efficiency in the resonant frequency bands.

[0206] Figure 9 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0207] As shown in Figure 9, the electronic device 10 includes a frame 11, an antenna structure 200, and a floor 300.

[0208] At least a portion of the frame 11 is spaced apart from the floor 300. The frame 11 includes a first position 201 and a second position 202. The frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively.

[0209] The antenna structure 200 includes a radiator 210 and a first feed element 221.

[0210] The radiator 210 includes a conductive portion of the frame 11 between a first position 201 and a second position 202. The first and second ends of the radiator 210 are open ends. In one embodiment, the first and second ends of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively.

[0211] The first and second ends of the first power supply component 221 are open ends.

[0212] The radiator 210 and the first feeder 221 are spaced apart and overlap at least partially along a first direction, which is perpendicular to the extension direction of the radiator 210 (e.g., the y-direction).

[0213] The radiator 210 extends in the same direction as the first feeder 221.

[0214] It should be understood that the fact that the extension direction of the radiator 210 is in the same direction as the extension direction of the first feeder 221 can be understood as the angle between the extension direction of the radiator 210 and the extension direction of the first feeder 221 being less than or equal to a first threshold, for example, less than or equal to 10°.

[0215] The fact that the first and second ends of the first power supply component 221 are open can be understood as the first and second ends of the first power supply component 221 being spaced apart from the ground 300. In one embodiment, no components may be provided between the first power supply component 221 and the ground 300 at the first and second ends of the first power supply component 221, or the first power supply component 221 may be electrically connected to the ground 300 via a capacitor.

[0216] The radiator 210 and the first feed element 221 are spaced apart, which can be understood as the radiator 210 and the first feed element 221 not being directly connected and forming a gap. In the embodiments of this application, the spaced arrangement can be understood accordingly. The radiator 210 and the first feed element 221 are coupled through this gap.

[0217] The antenna structure 200 also includes a first feed circuit 231, and a first feed element 221 includes a first feed point 211. The first feed circuit 231 is coupled to the first feed point 211. In one embodiment, the first feed circuit 231 is used to feed an electrical signal of a first operating frequency band.

[0218] The first feed element 221 and the radiator 210 are used to generate a first resonance and a second resonance. In one embodiment, the first resonance and the second resonance are used to jointly support an operating frequency band (e.g., a first operating frequency band) of the electronic device 10.

[0219] The electronic device 10 operates in a frequency band that includes a frequency range, such as the low band (LB) (698MHz-960MHz), the middle band (MB) (1710MHz-2170MHz), or the high band (HB) (2300MHz-2690MHz) in a cellular network. Taking LB (698MHz-960MHz) as an example, this operating frequency band can include multiple communication bands within that frequency range, such as B5, B8, etc., all of which can be understood accordingly in this embodiment.

[0220] According to embodiments of this application, the radiator 210 can form a radiator structure for a conformal linear antenna. When an electrical signal is fed into the first feed circuit 231, the antenna structure 200 can generate a first resonance and a second resonance through the radiator 210 and the first feed element 221. In the electronic device 10, compared to the radiator 210 (which is represented by the conductive portion in the frame 11), the first feed element 221 has a poorer radiation environment (e.g., poor clearance, closer proximity to adjacent metal components). However, the first feed element 221 can generate a new current path for the radiator 210, thereby generating a new resonance (e.g., a second resonance) to extend the operating bandwidth of the antenna structure 200.

[0221] Meanwhile, since the first and second ends of the radiator 210 are open, the region near the first and second ends of the radiator 210 has a strong electric field and a weak current. Similarly, the first and second ends of the first feed element 221 are also open, and the region near the first and second ends of the first feed element 221 has a strong electric field and a weak current. The region with a strong electric field (weak magnetic field) of the radiator 210 is close to the region with a strong electric field (weak magnetic field) of the first feed element 221, and coupling between the radiator 210 and the first feed element 221 can be achieved through electric field coupling (magnetic field coupling). Furthermore, the first resonance and second resonance jointly generated by the radiator 210 and the first feed element 221 are relatively balanced, and no dips in radiation efficiency are generated in the first operating frequency band supported by the first and second resonances, thereby improving the radiation characteristics of the antenna structure 200 and giving the electronic device 10 better communication performance.

[0222] In one embodiment, the first and second resonators can be close to each other so that they jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the first and second resonators is in the range of 5% to 20% (greater than or equal to 5%, and less than or equal to 20%) of the low-frequency or high-frequency resonant point. In one embodiment, in the low-frequency band (less than or equal to 1 GHz, e.g., 698 MHz–960 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the mid-frequency band (in the range of 1 GHz–2 GHz, e.g., 1710 MHz–2170 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high-frequency band (in the range of 2 GHz–3 GHz, e.g., 2300 MHz–2690 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0223] In one embodiment, at the resonant point of the first resonance, the currents on the radiator 210 are in the same direction (or, the radiator 210 does not have a point where the currents are in opposite directions). At the resonant point of the second resonance, the currents on the radiator 210 are in the same direction (or, the radiator 210 does not have a point where the currents are in opposite directions).

[0224] It should be understood that both the first and second resonances can be generated by the line DM mode. Since the current generated by the line DM mode is mainly produced by the radiator 210 and is concentrated on the radiator 210, the current on the ground 300 has a relatively small impact on the antenna structure 200, making it easy to determine the maximum radiation direction of the radiation pattern generated by the antenna structure 200.

[0225] In one embodiment, the radiator 210 has open ends and can operate in a half-wavelength mode. The electrical length of the radiator 210 is half the first wavelength, which is the wavelength corresponding to the resonance generated by the radiator 210. The wavelength corresponding to the resonance can be understood as the wavelength corresponding to the resonant point of the resonance, or the wavelength corresponding to the center frequency of the resonant frequency band.

[0226] The wavelengths mentioned above are all vacuum wavelengths. Since there is a certain conversion relationship between the wavelength of the medium and the wavelength of the vacuum, the above vacuum wavelengths can also be converted into medium wavelengths.

[0227] In one embodiment, the antenna structure 200 can be used for satellite communication. In one embodiment, the first operating frequency band includes at least a portion of the satellite communication frequency bands.

[0228] Satellite communication includes at least one of the following communication services: receiving and / or sending short messages (also known as short messages), satellite calling and / or answering telephone calls, and satellite data (e.g., Internet access).

[0229] In one embodiment, the satellite communication frequency band may include a portion of the frequency band in the Tiantong satellite system, specifically the transmitting frequency band (1980MHz-2010MHz) and receiving frequency band (2170MHz-2200MHz) within the Tiantong satellite system. In another embodiment, the satellite communication frequency band may include a portion of the frequency band in the BeiDou satellite system, specifically the transmitting frequency band (1610MHz-1626.5MHz) and receiving frequency band (2483.5MHz-2500MHz) within the BeiDou satellite system. In yet another embodiment, the satellite communication frequency band may include a portion of the frequency band in a low-Earth orbit (LEO) satellite system, specifically the transmitting frequency band (1668MHz-1675MHz) and receiving frequency band (1518MHz-1525MHz) within the LEO satellite system. Alternatively, it can be applied to other satellite communication systems, and this embodiment does not limit the scope of the application.

[0230] It should be understood that when electronic device 10 conducts satellite communication, it can communicate with a communication satellite through one or more antennas within electronic device 10.

[0231] In one embodiment, when the electronic device 10 performs satellite communication, it can communicate with a communication satellite through an antenna within the electronic device 10. In this case, the antenna can be loaded with different electronic components in different time slots to adjust the resonant frequency of the resonance point, thereby enabling the antenna to operate in the transmission and reception frequency bands of the satellite system.

[0232] In one embodiment, when the electronic device 10 performs satellite communication, it can communicate with a communication satellite through multiple antennas within the electronic device 10. In this case, the operating frequency bands of some of the multiple antennas may include the transmission frequency band of the satellite system, and the operating frequency bands of the other antennas may include the reception frequency band of the satellite system.

[0233] In one embodiment, when the antenna structure 200 operates in the Tiantong satellite system (the operating frequency band of the antenna structure 200 includes at least a portion of the frequency bands in the Tiantong satellite system), the electronic device 10 can perform voice communication through the antenna structure 200. In one embodiment, when the antenna structure 200 operates in the Beidou satellite system (the operating frequency band of the antenna structure 200 includes at least a portion of the frequency bands in the Beidou satellite system), the electronic device 10 can send or receive short messages and images through the antenna structure 200.

[0234] In one embodiment, the frame 11 includes a first side 131 and a second side 132 intersecting the first side 131 at an angle, wherein the length of the first side 131 is less than the length of the second side 132. A first position 201 and a second position 202 are located on the first side 131. In one embodiment, the first side 131 can be understood as the short side of the electronic device 10. When the electronic device 10 is a foldable electronic device comprising multiple housings, the first side 131 can be understood as the short side of the electronic device 10 in its folded state.

[0235] It should be understood that the first edge 131 can be the top edge or the bottom edge of the electronic device 10. For the sake of brevity, only the top edge of the electronic device 10 will be used as an example for explanation. The top edge / bottom edge of the electronic device 10 can be understood as the top / bottom edge in normal use. For example, in a mobile phone, it can be understood as the top / bottom edge of the desktop or user interface (UI).

[0236] When the electronic device 10 is a foldable electronic device comprising multiple housings, the first side 131 can be understood as the short side of the electronic device 10 in its folded state or in its unfolded state. For example, in a large-fold type electronic device (which can be understood as still displaying a desktop user interface in the folded state), the first side 131 can be understood as the short side of the electronic device 10 in its folded state. As another example, in a small-fold type electronic device (which can be understood as only displaying a desktop user interface in the unfolded state), the first side 131 can be understood as the short side of the electronic device 10 in its unfolded state. The first side 131 can be understood accordingly in all embodiments of this application, and for the sake of brevity, it will not be elaborated further.

[0237] It should be understood that the resonances (e.g., the first resonance, the second resonance) in the above embodiments are generated by the line DM mode described in the above embodiments. Since the current generated by the line DM mode is mainly generated by the radiator 210, and the current is mainly concentrated on the radiator 210, the current on the ground 300 has a relatively small impact on the antenna structure 200, making it easy to determine the maximum radiation direction of the radiation pattern generated by the antenna structure 200. When the radiator 210 is located at the top edge of the electronic device 10, the radiation beam generated by the antenna structure 200 is directed towards the communication satellite, which can improve the communication quality between the electronic device 10 and the communication satellite.

[0238] Furthermore, when the radiator 210 is located at the top edge of the electronic device 10, in the line CM mode, the lateral mode of the ground plane (which accounts for a larger proportion than the longitudinal mode) can be excited. However, the currents corresponding to the lateral modes on the ground plane will cancel each other out. Therefore, the system efficiency and radiation efficiency of the line CM mode are relatively low. In contrast, in the line DM mode, the antenna radiation is mainly generated by the radiator, and the system efficiency and radiation efficiency of the line DM mode are better than those of the line CM mode.

[0239] In one embodiment, at the resonant point of the first resonance, the currents on the first feeder 221 are in the same direction. In another embodiment, at the resonant point of the second resonance, the currents on the first feeder 221 are in the same direction.

[0240] It should be understood that the current on the first feed element 221 can be generated by the line DM mode. The radiator 210 generates a co-current through co-current coupling on the first feed element 221, thereby generating a second resonance.

[0241] It should be understood that the aforementioned "current in the same direction" can be interpreted as the current flowing from one end to the other. For example, the current on the radiator 210 flows from the first position 201 (first end) to the second position 202 (second end), or from the second position 202 (second end) to the first position 201 (first end). Alternatively, the aforementioned "current in the same direction" can be understood as the currents being distributed in the same direction along the path of current flow, with no points where the currents reverse. For the sake of brevity, the "current in the same direction" mentioned in the embodiments of this application can be understood accordingly.

[0242] In one embodiment, the first feed element 221 includes a connection point 241, as shown in FIG10. The antenna structure 200 may also include an element 242. The element 242 is coupled to the connection point 241. A first end of the element 242 is coupled to the connection point 241, and a second end of the element 242 is coupled to the ground plane 300.

[0243] It should be understood that electronic component 242 can be used to adjust the resonant frequency of the second resonance so that the resonant point of the second resonance is close to the resonant point of the first resonance, thereby enabling the first resonance and the second resonance to jointly support one operating frequency band of electronic device 10.

[0244] In one embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%. In another embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 50%.

[0245] In one embodiment, the ratio of the length of the overlapping portion of the first feed element 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the first feed element 221 on the frame 11 and the radiator 210) to the length of the first feed element 221 is greater than or equal to 50%. In another embodiment, the ratio of the length of the overlapping portion of the first feed element 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the first feed element 221 on the frame 11 and the radiator 210) to the length of the first feed element 221 is greater than or equal to 75%.

[0246] It should be understood that when the ratio of the length of the projection to the length of the first feed element 221 (or the ratio of the length of the projection to the length of the radiator 210) is within the aforementioned range, the radiator 210 can be better excited, and the antenna structure 200 has better radiation characteristics. When the first position 201 and the second position 202 are respectively located on the first and second sides of the frame that intersect at an angle, the extension direction of the radiator 210 includes the extension direction of the first side (e.g., the x-direction) and the extension direction of the second side (e.g., the y-direction). The length of the overlapping portion can be understood as the sum of the length of the overlapping portion in the extension direction of the first side (e.g., the x-direction) and the length of the overlapping portion in the extension direction of the second side (e.g., the y-direction).

[0247] In one embodiment, the length of the radiator 210 between the projection of the first end of the first power supply 221 onto the frame 11 and the first position 201 is less than or equal to one-quarter of the length of the radiator 210. In another embodiment, the length of the radiator 210 between the projection of the second end of the first power supply 221 onto the frame 11 and the second position 202 is less than or equal to one-quarter of the length of the radiator 210.

[0248] It should be understood that as the first end of the first feed element 221 approaches the first end of the radiator 210 (and the second end of the first feed element 221 approaches the second end of the radiator 210), the radiator 210 can be better excited, and the antenna structure 200 has better radiation characteristics (e.g., radiation efficiency).

[0249] In one embodiment, the frame 11 includes a ground point between a first position 201 and a second position 202. The frame 11 is coupled to the ground plane 300 at the ground point, as shown in FIG10.

[0250] In one embodiment, the grounding point is located in the central region between the first position 201 and the second position 202. In one embodiment, the length D1 of the radiator 210 between the first position 201 and the grounding point and the length D2 of the radiator 210 between the second position 202 and the grounding point satisfy: D1×75%≤D2≤D1×125%.

[0251] It should be understood that when the radiator 210 includes a grounding point, a third and fourth resonance can be generated through other feeding components (refer to the technical solutions in the embodiments below). The third and fourth resonances can be generated by the line CM mode. Since the line CM mode and the line DM mode are orthogonal, the resonant frequency band formed by the third and fourth resonances has good isolation from the resonant frequency band formed by the first and second resonances.

[0252] The central region can be understood as the area within 5mm of the center. The physical length between the center and the first position 201 is the same as the physical length between the center and the second position 202, or the electrical length between the center and the first position 201 is the same as the electrical length between the center and the second position 202. For the sake of brevity, the central region described in the embodiments of this application can be understood accordingly.

[0253] In one embodiment, the grounding point is coupled to the floor 300 to achieve grounding. At the grounding point, the frame 11 can be directly electrically connected to the floor 300 via a spring clip, an inductor, or a structural member of the mid-frame (e.g., a connecting rib). Electrical connection to the floor 300 via a structural member of the mid-frame can be understood as at least a portion of the frame 11 being an integral structure with the floor 300.

[0254] In one embodiment, the grounding point can be electrically connected to the floor 300 via a grounding element (e.g., spring clip, connecting rod). The width of the grounding element connected to the frame 11 is greater than or equal to 1 mm and less than or equal to 10 mm.

[0255] In one embodiment, the lengths of the radiators on both sides of the grounding point are approximately the same, and the ratio of the lengths of the radiators on both sides of the grounding point (the length of the conductor portion of the frame between the first position 201 and the grounding point, and the length of the conductor portion of the frame between the second position 202 and the grounding point) is greater than or equal to 0.7 and less than or equal to 1.3.

[0256] It should be understood that when the lengths of the radiators on both sides of the grounding point are approximately the same, the structure of the antenna structure 200 is more symmetrical. With the increase of the symmetry of the antenna structure 200, the radiator 210 can be better excited, so that the antenna structure 200 has better radiation characteristics (e.g., bandwidth, radiation efficiency, etc.) in the resonant frequency band formed by the first and second resonances.

[0257] In one embodiment, the ratio of the lengths of the radiators on both sides of the grounding point is greater than or equal to 0.9 and less than or equal to 1.1.

[0258] In one embodiment, the projection of the grounding point onto the first power supply 221 coincides with the center of the first power supply 221.

[0259] In one embodiment, the two ends of the first power supply 221 are spaced from the ground 300 in the same way (for example, the first end and the second end of the first power supply 221 are coupled to the ground 300 through a capacitor, or are not coupled to the ground 300 through a component).

[0260] It should be understood that the increased symmetry of the antenna structure 200 can better excite the radiator 210, thereby enabling the antenna structure 200 to have better radiation characteristics (e.g., bandwidth, radiation efficiency, etc.) in the resonant frequency band formed by the first and second resonances.

[0261] In one embodiment, both ends of the first feed element 221 are open ends, and the electrical length of the radiator 210 is the same as the electrical length of the first feed element 221, which is half of the first wavelength. The first wavelength is the wavelength corresponding to the center frequency between the resonant point of the first resonance and the resonant point of the second resonance.

[0262] In one embodiment, the projection of the first power supply element 221 onto the frame 11 completely overlaps with the radiator 210. In another embodiment, the projection of the first power supply element 221 onto the frame 11 is located between a first position 201 and a second position 202.

[0263] In one embodiment, the electrical length of the radiator 210 is approximately the same as the electrical length of the first feeder 221.

[0264] In one embodiment, the physical length of the radiator 210 is approximately the same as the physical length of the first feeder 221.

[0265] It should be understood that the physical length of the electronic components coupled to the first feed element 221 / radiator 210 can be increased or decreased while maintaining a constant electrical length. In one embodiment, the physical length L0 of the radiator 210 and the physical length L1 of the first feed element 221 satisfy: L0 × 50% ≤ L1 ≤ L0. In another embodiment, the physical length L0 of the radiator 210 and the physical length L1 of the first feed element 221 satisfy: L0 ≤ L1 ≤ L0 × 150%.

[0266] In one embodiment, the physical length L0 of the radiator 210 can be understood as the length of the conductive portion of the frame between the first position 201 and the second position 202, for example, the sum of the physical lengths of the radiator 210 on both sides of the grounding point.

[0267] In one embodiment, the distance D between the first feed element 221 and the radiator 210 is less than or equal to 5 mm, so that the first feed element 221 and the radiator 210 have good coupling characteristics. In another embodiment, the distance D between the first feed element 221 and the radiator 210 is less than or equal to 2 mm.

[0268] It should be understood that the distance D between the first feed element 221 and the radiator 210 can be understood as the minimum distance between a point on the first feed element 221 and a point on the radiator 210.

[0269] In one embodiment, the electronic device 10 may further include a bracket 140. As shown in FIG11, it is a partial cross-sectional view of the electronic device along a first direction. For the sake of brevity, only the cross-section is used to show the antenna structure, the structural relationship between the bracket 140 and the back cover 21 and PCB 17.

[0270] In one embodiment, the first power supply component 221 may be disposed on the surface of the bracket 140, and at least a portion of the bracket 140 may be disposed between the PCB 17 and the back cover 21 to support the first power supply component 221. The metal layer in the PCB 17 may serve as the floor 300 in this embodiment, or the floor may be the mid-frame of the electronic device or other metal layers.

[0271] In one embodiment, the first power supply element 221 on the bracket 140 may be located above the PCB 17. For example, the projection of the first power supply element 221 on the PCB 17 may completely overlap with the PCB 17.

[0272] In one embodiment, other components may be disposed between the bracket 140 and the PCB 17. To avoid mutual interference between the components and the first power supply component 221, the components may be disposed within a metal shield.

[0273] In one embodiment, the first power supply element 221 on the bracket 140 may be located at the edge of the PCB 17. For example, the projection of the first power supply element 221 on the PCB 17 partially overlaps with a conductive component on the PCB 17; or, for another example, the projection of the first power supply element 221 on the PCB 17 coincides with the outer edge of a conductive component on the PCB 17 or is located within 10 mm of the outer edge. In one embodiment, the first power supply element 221 on the bracket 140 may be located above a cutout area (e.g., a non-conductive portion) of the PCB 17 or above the gap between the PCB 17 and the frame. For example, the projection of the first power supply element 221 on the PCB 17 does not overlap with the PCB 17.

[0274] In one embodiment, the distance H1 between the bracket 140 and the PCB 17 can be greater than or equal to 0.1 mm and less than or equal to 3 mm. In another embodiment, the distance H2 between the bracket 140 and the back cover 21 can be greater than or equal to 0.1 mm and less than or equal to 1 mm.

[0275] In one embodiment, the first power supply element 221 may be disposed on the surface of the rear cover 21 (e.g., the surface facing the PCB 17). In another embodiment, the first power supply element 221 may also be disposed on the surface of the PCB 17. The embodiments of this application do not limit the placement of the first power supply element 221.

[0276] It should be understood that, for the sake of brevity, in the technical solutions shown in Figures 9 to 11, the conductive portion of the frame 11 is used as the radiator 210 and the first power supply 221 is a non-frame structure (e.g., set on a bracket, PCB, or back cover). In actual production or design, the relative positions of the radiator 210 and the first power supply 221 can be interchanged. For example, the conductive portion of the frame 11 can be used as the first power supply 221, and the radiator 210 can be a non-frame structure (e.g., set on a bracket, PCB, or back cover).

[0277] It should be understood that, for the sake of brevity, this embodiment of the application only takes the example of the first power supply component 221 being located on the floor 300 (the first power supply component 221 and the floor 300 completely overlap along the z direction). In actual production or design, the first power supply component 221 and the floor 300 may partially overlap along the z direction, or the first power supply component 221 and the floor 300 may not overlap along the z direction. This embodiment of the application does not impose any restrictions on this.

[0278] In the embodiments of this application, both the first feed element 221 and the radiator 210 participate in the antenna's radiation mode as radiators.

[0279] In one embodiment, the first power supply element 221 is strip-shaped. "Strip-shaped" can be understood as having a length much greater than its width, for example, a length greater than three times, or six times, its width. In one embodiment, the smallest dimension of the first power supply element 221 is its thickness; for example, when the first power supply element 221 can be disposed on the surface of the bracket 140, the dimension in the direction perpendicular to the surface of the bracket 140 is the thickness. The dimensions of the first power supply element 221 other than its thickness can be understood as its length and width.

[0280] In one embodiment, the width of the first power supply element 221 may be less than or equal to 3 mm. In another embodiment, the width of the first power supply element 221 may be less than or equal to 2 mm.

[0281] Figure 12 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0282] As shown in Figure 12, the frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively.

[0283] The first and second ends of the first feed element 221 are grounded. The length of the radiator 210 between the projection of the first end of the first feed element 221 onto the frame 11 and the center of the radiator 210 is less than or equal to one-quarter of the length of the first feed element 221. In one embodiment, the length of the radiator 210 between the projection of the first end of the first feed element 221 onto the frame 11 and the center of the radiator 210 is less than or equal to one-eighth of the length of the first feed element 221.

[0284] It should be understood that when the frame 11 has a grounding point between the first position 201 and the second position 202 (not shown in the figure), the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the center of the radiator 210 can also be the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the grounding point. For the sake of brevity, the electronic device 10 shown in Figure 12 will only use the center of the radiator 210 as an example for explanation, and will not be described in detail.

[0285] It should be understood that the difference between the antenna structure 200 in the electronic device 10 shown in Figure 12 and the antenna structure 200 in the electronic device 10 shown in Figures 9 to 11 lies only in the boundary conditions of the first feed element 221 and the relative positions of the radiator 210 and the first feed element 221.

[0286] In the antenna structure 200 shown in Figures 9 to 11, the first and second ends of the radiator 210 are open ends (the frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively). The first and second ends of the first feed element 221 are also open ends. Both the radiator 210 and the first feed element 221 form a structure similar to a wire antenna.

[0287] Since the first and second ends of the radiator 210 are open, the radiator 210 has a strong electric field and a weak current in the vicinity of the first and second ends. Similarly, the first and second ends of the first feeder 221 are also open, and the first feeder 221 has a strong electric field and a weak current in the vicinity of the first and second ends.

[0288] The first end of the radiator 210 is close to the first end of the first feed element 221, and the second end of the radiator 210 is close to the second end of the first feed element 221. The region of the radiator 210 with a stronger electric field (weaker magnetic field) is close to the region of the first feed element 221 with a stronger electric field (weaker magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric field coupling (magnetic field coupling).

[0289] The radiator 210 generates a first resonance and a second resonance in the line DM mode. The first feed element 221 excites the radiator 210 in the line DM mode to generate the aforementioned first resonance and second resonance.

[0290] In the antenna structure 200 shown in Figure 12, the boundary conditions of the radiator 210 are the same as those of the radiator 210 in the antenna structures 200 shown in Figures 9 to 11, except that the first and second ends of the first feed element 221 are grounded. The radiator 210 forms a structure similar to a wire antenna. The first feed element 221 forms a structure similar to a slot antenna.

[0291] Because the first and second ends of the radiator 210 are open terminals, the radiator 210 has a strong electric field and a weak current in the vicinity of its first and second ends. Conversely, in the vicinity of the center of the radiator 210 (a region at a certain distance from the center, for example, within 5 mm of the center), it has a weak electric field and a strong current. Meanwhile, the first and second ends of the first feed element 221 are grounded terminals, and the first feed element 221 has a weak electric field and a strong current in the vicinity of its first and second ends.

[0292] The midpoint of the radiator 210 is close to the first end of the first feed element 221. The region of the radiator 210 with a weaker electric field (stronger magnetic field) (the region near the center of the radiator 210) is close to the region of the first feed element 221 with a weaker electric field (stronger magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric field coupling (magnetic field coupling).

[0293] Similarly, the radiator 210 can generate the first and second resonances using a line DM mode. In one embodiment, the first feed element 221 excites the radiator 210 using a slot DM mode to generate the aforementioned first and second resonances.

[0294] It should be understood that, for the sake of brevity, the parts of the antenna structure 200 shown in Figure 12 that are similar to those shown in Figures 9 to 11 will not be described in detail. These similar parts include: the length relationship between the radiator 210 and the first feed element 221; the position of the radiator 210 within the electronic device 10; the first and second resonances jointly supporting a single operating frequency band (e.g., a first operating frequency band); the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance; the first operating frequency band including at least a portion of the satellite communication frequency band; the shape of the first feed element 221; the placement of the first feed element 221; and so on.

[0295] Figure 13 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0296] As shown in Figure 13, the frame 11 is coupled to the floor 300 at the first position 201 and the second position 202.

[0297] The first end and the second end of the first feed element 221 are open ends. The length of the radiator 210 between the projection of the first end of the first feed element 221 onto the frame 11 and the center of the radiator 210 is less than or equal to one-quarter of the length of the first feed element 221. In one embodiment, the length of the radiator 210 between the projection of the first end of the first feed element 221 onto the frame 11 and the center of the radiator 210 is less than or equal to one-eighth of the length of the first feed element 221.

[0298] It should be understood that when there is an insulating gap between the frame 11 and the first position 201 and the second position 202 (not shown in the figure), the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the center of the radiator 210 can also be the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the insulating gap. For the sake of brevity, only the center of the radiator 210 is used as an example in the electronic device 10 shown in Figure 13, and will not be described in detail.

[0299] In the antenna structure 200 shown in Figure 13, the first and second ends of the first feed element 221 are open. The radiator 210 forms a structure similar to a slot antenna. The first feed element 221 forms a structure similar to a line antenna.

[0300] Because the first and second ends of the radiator 210 are open, a strong current and a weak electric field exist in the vicinity of the first and second ends. Conversely, a weak current and a strong electric field exist in the vicinity of the center of the radiator 210 (a region at a certain distance from the center, for example, within 5 mm of the center). Similarly, because the first and second ends of the first feed element 221 are open, a weak current and a strong electric field exist in the vicinity of the first and second ends.

[0301] The midpoint of the radiator 210 is close to the first end of the first feed element 221. The region of the radiator 210 with a strong electric field (weak magnetic field) (the region near the center of the radiator 210) is close to the region of the first feed element 221 with a strong electric field (weak magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric field coupling (magnetic field coupling).

[0302] Similarly, the radiator 210 can generate a first resonance and a second resonance using a slot DM mode. In one embodiment, the first feed element 221 excites the radiator 210 using a line DM mode to generate the aforementioned first and second resonances.

[0303] It should be understood that, for the sake of brevity, the parts of the antenna structure 200 shown in Figure 13 that are similar to those shown in Figures 9 to 11 will not be described in detail. These similar parts include: the relative positional relationship between the radiator 210 and the first feed element 221; the position of the radiator 210 within the electronic device 10; the first and second resonances jointly supporting a single operating frequency band (e.g., a first operating frequency band); the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance; the first operating frequency band including at least a portion of the satellite communication frequency band; the shape of the first feed element 221; the placement of the first feed element 221; and so on.

[0304] Figure 14 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0305] As shown in Figure 14, the frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively. The frame 11 includes a grounding point between the first position 201 and the second position 202, and the frame 11 is coupled to the grounding point 300.

[0306] In one embodiment, the grounding point is located in the central region between the first position 201 and the second position 202. In one embodiment, the length D1 of the radiator 210 between the first position 201 and the grounding point and the length D2 of the radiator 210 between the second position 202 and the grounding point satisfy: D1×75%≤D2≤D1×125%.

[0307] The first and second ends of the first power supply element 221 are open ends. The length of the radiator 210 between the projection of the first end of the first power supply element 221 on the frame 11 and the grounding point is less than or equal to one-quarter of the length of the first power supply element 221.

[0308] It should be understood that the length of the radiator 210 between the projection of the first end of the first power supply component 221 on the frame 11 and the grounding point can also be the length of the radiator 210 between the projection of the first end of the first power supply component 221 on the frame 11 and the center of the radiator 210. For the sake of brevity, only the grounding point is used as an example in the electronic device 10 shown in Figure 14, and will not be described in detail.

[0309] In one embodiment, the length of the radiator 210 between the projection of the first end of the first power supply 221 onto the frame 11 and the grounding point is less than or equal to one-eighth of the length of the first power supply 221.

[0310] It should be understood that the difference between the antenna structure 200 in the electronic device 10 shown in Figure 14 and the antenna structure 200 in the electronic device 10 shown in Figure 12 lies only in the boundary conditions of the first feed element 221.

[0311] In the antenna structure 200 shown in Figure 12, the first and second ends of the radiator 210 are open ends (the frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively). The first and second ends of the first feed element 221 are grounded ends. The radiator 210 forms a structure similar to a wire antenna. The first feed element 221 forms a structure similar to a slot antenna.

[0312] Because the first and second ends of the radiator 210 are open terminals, the radiator 210 has a strong electric field and a weak current in the vicinity of its first and second ends. Conversely, in the vicinity of the center of the radiator 210 (a region at a certain distance from the center, for example, within 5 mm of the center), it has a weak electric field and a strong current. Meanwhile, the first and second ends of the first feed element 221 are grounded terminals, and the first feed element 221 has a weak electric field and a strong current in the vicinity of its first and second ends.

[0313] The midpoint of the radiator 210 is close to the first end of the first feed element 221. The region of the radiator 210 with a weaker electric field (stronger magnetic field) (the region near the center of the radiator 210) is close to the region of the first feed element 221 with a weaker electric field (stronger magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric field coupling (magnetic field coupling).

[0314] The radiator 210 generates a first resonance and a second resonance in line DM mode. The first feed element 221 excites the radiator 210 in slot DM mode to generate the aforementioned first resonance and second resonance.

[0315] In the antenna structure 200 shown in Figure 14, the boundary conditions of the radiator 210 are roughly the same as those of the radiator 210 in the antenna structure 200 shown in Figure 12, except that the first and second ends of the first feed element 221 are open ends. The radiator 210 also includes a grounding point, at which it is coupled to the ground plane 300. In one embodiment, the grounding point is located in the central region of the radiator 210. Both the radiator 210 and the first feed element 221 form a structure similar to a wire antenna.

[0316] Because the first and second ends of the radiator 210 are open, a strong electric field and a weak current are present in the vicinity of the first and second ends. Conversely, a weak electric field and a strong current are present in the vicinity of the grounding point of the radiator 210 (a region at a certain distance from the grounding point, for example, within 5 mm of the grounding point). Similarly, because the first and second ends of the first feed element 221 are open, a weak current and a strong electric field are present in the vicinity of the first and second ends.

[0317] The grounding point of the radiator 210 is close to the first end of the first feeder 221. The region of the radiator 210 with a weaker electric field (stronger magnetic field) (the region near the grounding point) is close to the region of the first feeder 221 with a stronger electric field (weaker magnetic field). The radiator 210 and the first feeder 221 can be coupled through electric field and magnetic field coupling.

[0318] The radiator 210 can generate a first resonance and a second resonance using a line CM mode. In one embodiment, the first feed element 221 excites the radiator 210 using a line DM mode to generate the aforementioned first and second resonances.

[0319] It should be understood that, for the sake of brevity, the parts of the antenna structure 200 shown in Figure 14 that are similar to those in the antenna structure 200 shown in Figure 12 will not be described in detail. These similar parts include: the relative positional relationship between the radiator 210 and the first feed element 221; the length relationship between the radiator 210 and the first feed element 221; the position of the radiator 210 within the electronic device 10; the first and second resonances jointly supporting a single operating frequency band (e.g., a first operating frequency band); the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance; the first operating frequency band including at least a portion of the satellite communication frequency band; the shape of the first feed element 221; the placement of the first feed element 221; and so on.

[0320] Figure 15 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0321] As shown in Figure 15, the frame 11 is coupled to the floor 300 at a first position 201 and a second position 202. The frame 11 has an insulating gap between the first position 201 and the second position 202.

[0322] In one embodiment, the insulating gap is located in the central region between the first position 201 and the second position 202. In one embodiment, the length D1 of the radiator 210 between the first position 201 and the insulating gap and the length D2 of the radiator 210 between the second position 202 and the insulating gap satisfy: D1×75%≤D2≤D1×125%.

[0323] The first and second ends of the first power supply component 221 are grounded. The length of the radiator 210 between the projection of the first end of the first power supply component 221 on the frame 11 and the insulating gap is less than or equal to one-quarter of the length of the first power supply component 221.

[0324] It should be understood that the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the insulating gap can also be the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the center of the radiator 210. For the sake of brevity, only the insulating gap is used as an example in the electronic device 10 shown in Figure 15, and will not be described in detail.

[0325] In one embodiment, the length of the radiator 210 between the projection of the first end of the first power supply 221 onto the frame 11 and the insulating gap is less than or equal to one-eighth of the length of the first power supply 221.

[0326] It should be understood that the difference between the antenna structure 200 in the electronic device 10 shown in Figure 15 and the antenna structure 200 in the electronic device 10 shown in Figure 13 lies only in the boundary conditions of the first feed element 221.

[0327] In the antenna structure 200 shown in Figure 13, the first and second ends of the radiator 210 are grounded (the frame 11 is coupled to the ground plane 300 at the first position 201 and the second position 202). The first and second ends of the first feed element 221 are open. The radiator 210 forms a structure similar to a slot antenna. The first feed element 221 forms a structure similar to a line antenna.

[0328] Because the first and second ends of the radiator 210 are open, a strong current and a weak electric field exist in the vicinity of the first and second ends. Conversely, a weak current and a strong electric field exist in the vicinity of the center of the radiator 210 (a region at a certain distance from the center, for example, within 5 mm of the center). Similarly, because the first and second ends of the first feed element 221 are open, a weak current and a strong electric field exist in the vicinity of the first and second ends.

[0329] The midpoint of the radiator 210 is close to the first end of the first feed element 221. The region of the radiator 210 with a strong electric field (weak magnetic field) (the region near the center of the radiator 210) is close to the region of the first feed element 221 with a strong electric field (weak magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric field coupling (magnetic field coupling).

[0330] The radiator 210 generates a first resonance and a second resonance in slot DM mode. The first feed element 221 excites the radiator 210 in line DM mode to generate the aforementioned first resonance and second resonance.

[0331] In the antenna structure 200 shown in Figure 15, the boundary conditions of the radiator 210 are roughly the same as those of the radiator 210 in the antenna structure 200 shown in Figure 13, except that the first and second ends of the first feed element 221 are grounded. The radiator 210 also includes an insulating gap. In one embodiment, the insulating gap is located in the central region of the radiator 210. Both the radiator 210 and the first feed element 221 form a structure similar to a slot antenna.

[0332] Since the first and second ends of the radiator 210 are grounded, a strong current and a weak electric field exist in the vicinity of the first and second ends of the radiator 210. Conversely, a weak current and a strong electric field exist in the vicinity of the insulating gap of the radiator 210 (a region at a certain distance from the insulating gap, for example, within 5 mm of the insulating gap). Similarly, since the first and second ends of the first feeder 221 are grounded, a weak electric field and a strong current exist in the vicinity of the first and second ends of the first feeder 221.

[0333] The insulating gap of the radiator 210 is close to the first end of the first feeder 221. The region of the radiator 210 with a stronger electric field (weaker magnetic field) (the region near the insulating gap) is close to the region of the first feeder 221 with a weaker electric field (stronger magnetic field). The radiator 210 and the first feeder 221 can be coupled through electric field and magnetic field coupling.

[0334] Similarly, the radiator 210 can generate a first resonance and a second resonance in slot CM mode. In one embodiment, the first feed element 221 excites the radiator 210 in slot DM mode to generate the aforementioned first resonance and second resonance.

[0335] It should be understood that, for the sake of brevity, the parts of the antenna structure 200 shown in Figure 15 that are similar to those in the antenna structure 200 shown in Figure 13 will not be described in detail. These similar parts include: the relative positional relationship between the radiator 210 and the first feed element 221; the length relationship between the radiator 210 and the first feed element 221; the position of the radiator 210 within the electronic device 10; the first and second resonances jointly supporting a single operating frequency band (e.g., a first operating frequency band); the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance; the first operating frequency band including at least a portion of the satellite communication frequency band; the shape of the first feed element 221; the placement of the first feed element 221; and so on.

[0336] Figure 16 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0337] As shown in Figure 16, the frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively.

[0338] The first terminal of the first power supply component 221 is a ground terminal, and the second terminal is an open terminal.

[0339] It should be understood that when the first end of the first feed element 221 is a grounded end and the second end is an open end, the length of the first feed element 221 is small, the layout of the antenna structure 200 is more compact, and it is easier to place it in the increasingly tight space of the electronic device 10.

[0340] In one embodiment, the length of the radiator 210 between the projection of the first end of the first power supply element 221 onto the frame 11 and the center of the radiator 210 is less than or equal to half the length of the first power supply element 221. In another embodiment, the length of the radiator 210 between the projection of the first end of the first power supply element 221 onto the frame 11 and the center of the radiator 210 is less than or equal to one-quarter the length of the first power supply element 221.

[0341] It should be understood that when the frame 11 has a grounding point between the first position 201 and the second position 202 (not shown in the figure), the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the center of the radiator 210 can also be the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the grounding point. For the sake of brevity, the electronic device 10 shown in Figure 12 will only use the center of the radiator 210 as an example for explanation, and will not be described in detail.

[0342] It should be understood that the difference between the antenna structure 200 in the electronic device 10 shown in Figure 16 and the antenna structure 200 in the electronic device 10 shown in Figure 12 lies only in the boundary conditions of the first feed element 221.

[0343] In the antenna structure 200 shown in Figure 12, the first and second ends of the radiator 210 are open ends (the frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively). The first and second ends of the first feed element 221 are grounded ends. The radiator 210 forms a structure similar to a wire antenna. The first feed element 221 forms a structure similar to a slot antenna.

[0344] Because the first and second ends of the radiator 210 are open terminals, the radiator 210 has a strong electric field and a weak current in the vicinity of its first and second ends. Conversely, in the vicinity of the center of the radiator 210 (a region at a certain distance from the center, for example, within 5 mm of the center), it has a weak electric field and a strong current. Meanwhile, the first and second ends of the first feed element 221 are grounded terminals, and the first feed element 221 has a weak electric field and a strong current in the vicinity of its first and second ends.

[0345] The midpoint of the radiator 210 is close to the first end of the first feed element 221. The region of the radiator 210 with a weaker electric field (stronger magnetic field) (the region near the center of the radiator 210) is close to the region of the first feed element 221 with a weaker electric field (stronger magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric field coupling (magnetic field coupling).

[0346] Similarly, the radiator 210 can generate the first and second resonances using a line DM mode. In one embodiment, the first feed element 221 excites the radiator 210 using a slot DM mode to generate the aforementioned first and second resonances.

[0347] In the antenna structure 200 shown in Figure 16, the boundary conditions of the radiator 210 are the same as those of the radiator 210 in the antenna structure 200 shown in Figure 12, except that the first end of the first feed element 221 is a grounded end and the second end is an open end. The radiator 210 forms a structure similar to a wire antenna. The first feed element 221 forms a structure similar to an IFA.

[0348] Because the first and second ends of the radiator 210 are open, the radiator 210 has a strong electric field and a weak current in the vicinity of its first and second ends. Conversely, in the vicinity of the center of the radiator 210 (a region at a certain distance from the center, for example, within 5 mm of the center), it has a weak electric field and a strong current. The first feed element 221 has a grounded first end and an open second end. The first feed element 221 has a weak electric field and a strong current in the vicinity of its first end, and a weak current and a strong electric field in the vicinity of its second end.

[0349] The midpoint of the radiator 210 is close to the first end of the first feed element 221. The region of the radiator 210 with a weaker electric field (stronger magnetic field) (the region near the center of the radiator 210) is close to the region of the first feed element 221 with a weaker electric field (stronger magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric field coupling (magnetic field coupling).

[0350] Similarly, the radiator 210 can generate the first and second resonances using a line DM mode. In one embodiment, the first feed element 221 excites the radiator 210 using a similar slot DM mode to generate the aforementioned first and second resonances.

[0351] In one embodiment, the first feed point 211 may be located at the open end of the first feed element 221. In one embodiment, the distance between the ends of the first feed point 211 and the open end of the first feed element 221 is less than or equal to 3 mm, and the first feed element 221 may feed the electrical signal in a side-feed manner. In one embodiment, the distance between the end of the first feed point 211 and the end of the ground terminal of the first feed element 221 (the length of the first feed element 221 between the ends of the first feed point 211 and the ground terminal of the first feed element 221) is greater than half the length of the first feed element 221. In one embodiment, an element (e.g., a capacitor) is coupled between the first feed point 211 and the first feed circuit 231 to better excite the first feed element 221.

[0352] It should be understood that the first feed element 221 can be formed into a structure similar to a left-handed antenna, making the size of the first feed element 221 smaller and the antenna structure layout more compact. The left-handed antenna can be, for example, an antenna conforming to a composite right and left hand (CRLH) transmission line structure.

[0353] For the sake of brevity, in the embodiments of this application, the first power supply component 221 is a structure in which one end is a grounded end and the other end is an open end, which can be understood accordingly and will not be described in detail.

[0354] In one embodiment, the second end of the first power supply 221 may extend toward the second position 202, as shown in FIG16.

[0355] In one embodiment, the second end of the first power supply 221 may extend toward the first position 201.

[0356] In one embodiment, the distance between the projection of the midpoint of the radiator 210 onto the first feeder 221 and the grounding terminal (grounding point of the first end) of the first feeder 221 (the length of the first feeder 221) is less than or equal to half the length of the first feeder 221. In another embodiment, the length of the radiator 210 between the projection of the grounding terminal (grounding point of the first end) of the first feeder 221 onto the frame 11 and the midpoint of the radiator 210 is less than or equal to one-quarter of the length of the radiator 210.

[0357] It should be understood that the radiator 210 has a weaker electric field and a stronger current in the region near its midpoint. The region near the grounding terminal of the first feed element 221 also has a weaker electric field and a stronger current. The proximity of the region with a weaker electric field (stronger magnetic field) in the radiator 210 (its midpoint) to the region with a weaker electric field (stronger magnetic field) in the first feed element 221 (its grounding terminal) allows for a more balanced first and second resonance.

[0358] In one embodiment, the projection of the first power supply element 221 onto the frame 11 is located between the first position 201 and the second position 202.

[0359] In one embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 12.5%. In another embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%.

[0360] In one embodiment, the ratio of the length of the overlapping portion of the first feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210) to the length of the first feeder 221 is greater than or equal to 50%.

[0361] In one embodiment, the electrical length of the first feed element 221 is one-quarter of the first wavelength, and the electrical length of the radiator 210 is half of the first wavelength. The first wavelength is the wavelength corresponding to the center frequency between the resonant point of the first resonance and the resonant point of the second resonance.

[0362] In one embodiment, the electrical length of the first feed element 221 is half the electrical length of the radiator 210. In another embodiment, the physical length of the first feed element 221 is approximately half the physical length of the radiator 210. Since the electronic components coupled to the first feed element 221 / radiator 210 can increase or decrease their physical length while maintaining the same electrical length, the physical length L0 of the radiator 210 and the physical length L1 of the first feed element 221 satisfy the following condition: L0 × 25% ≤ L1 ≤ L0 × 50%. In another embodiment, the physical length L0 of the radiator 210 and the physical length L1 of the first feed element 221 satisfy the following condition: L0 × 35% ≤ L1 ≤ L0 × 75%.

[0363] It should be understood that, for the sake of brevity, the parts of the antenna structure 200 shown in Figure 16 that are similar to those in the antenna structure 200 shown in Figure 12 will not be described in detail. These similar parts include: the length relationship between the radiator 210 and the first feed element 221; the position of the radiator 210 within the electronic device 10; the first and second resonances jointly supporting a single operating frequency band (e.g., a first operating frequency band); the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance; the first operating frequency band including at least a portion of the satellite communication frequency band; the shape of the first feed element 221; the placement of the first feed element 221; and so on.

[0364] Figure 17 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0365] As shown in Figure 17, the electronic device 10 includes a frame 11, an antenna structure 200, and a floor 300.

[0366] At least a portion of the frame 11 is spaced apart from the floor 300. The frame 11 includes a first position 201 and a second position 202. The frame 11 has a first insulating gap and a second insulating gap at the first position 201 and the second position 202, respectively.

[0367] The frame 11 includes a ground point between the first position 201 and the second position 202, and the frame 11 is coupled to the ground 300 at the ground point.

[0368] In one embodiment, the grounding point is coupled to the floor 300 to achieve grounding. At the grounding point, the frame 11 can be directly electrically connected to the floor 300 via a spring clip, an inductor, or a structural member of the mid-frame (e.g., a connecting rib). Electrical connection to the floor 300 via a structural member of the mid-frame can be understood as at least a portion of the frame 11 being an integral structure with the floor 300.

[0369] In one embodiment, the grounding point can be electrically connected to the floor 300 via a grounding element (e.g., spring clip, connecting rod). The width of the grounding element connected to the frame 11 is greater than or equal to 1 mm and less than or equal to 10 mm.

[0370] In one embodiment, the grounding point is located in the central region between the first position 201 and the second position 202. In one embodiment, the length D1 of the radiator 210 between the first position 201 and the grounding point and the length D2 of the radiator 210 between the second position 202 and the grounding point satisfy: D1×75%≤D2≤D1×125%.

[0371] It should be understood that when the lengths of the radiators 210 on both sides of the grounding point are approximately the same, the antenna structure 200 is more symmetrical. With the increase in the symmetry of the antenna structure 200, the radiators can be better excited, thereby giving the antenna structure 200 better radiation characteristics (e.g., bandwidth, radiation efficiency, etc.) at operating resonance.

[0372] The antenna structure 200 includes a radiator 210, a first feed element 221, a second feed element 222, a first feed circuit 231, and a second feed circuit 232.

[0373] The radiator 210 includes a conductive portion of the frame 11 between a first position 201 and a second position 202. The first and second ends of the radiator 210 are open ends. In one embodiment, the first and second ends of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively.

[0374] The first end of the first power supply component 221 is an open end, and the second end is a grounded end.

[0375] The radiator 210 and the first feed element 221 are spaced apart. The radiator 210 and the first feed element 221 at least partially overlap along a first direction. The first direction is perpendicular to the extension direction of the radiator 210. The extension direction of the first feed element 221 is in the same direction as the extension direction of the radiator 210.

[0376] It should be understood that when the first position 201 and the second position 202 are respectively located on two intersecting sides (e.g., the first side 131 and the second side 132) of the frame 11, the radiator 210 can have two different extension directions (e.g., the x-direction and the y-direction). Correspondingly, the first direction can have two different directions (e.g., the y-direction and the x-direction). The fact that the radiator 210 and the first feed element 221 at least partially overlap along the first direction can be understood as the radiator 210 and the first feed element 221 at least partially overlapping along one of the two first directions. For the sake of brevity, the relevant descriptions in the embodiments of this application can be understood accordingly and will not be repeated here.

[0377] The first terminal of the second power supply component 222 is a grounded terminal, and the second terminal is an open terminal.

[0378] The radiator 210 and the second feeder 222 are arranged at intervals. The radiator 210 and the second feeder 222 at least partially overlap along a first direction. The extension direction of the second feeder 222 is the same as the extension direction of the radiator 210.

[0379] In one embodiment, the extending direction of the first power supply element 221 and the extending direction of the second power supply element 222 may be the same; for example, the first power supply element 221 and the second power supply element 222 may be arranged along the same straight line. In another embodiment, the extending directions of the first power supply element 221 and the second power supply element 222 may also be different. This application does not impose limitations on these aspects and the direction can be determined based on actual production or design.

[0380] The first power supply element 221 includes a first power supply point 211, and a first power supply circuit 231 is coupled to the first power supply point 211. In one embodiment, the first power supply circuit 231 is used to feed in an electrical signal of a first operating frequency band.

[0381] The second power supply element 222 includes a second power supply point 212, and a second power supply circuit 232 is coupled to the second power supply point 212. In one embodiment, the second power supply circuit 232 is used to feed in an electrical signal of a second operating frequency band.

[0382] The length of the radiator 210 between the projection of the first end (open end) of the first feed element 221 onto the frame 11 and the grounding point is less than or equal to half the length of the first feed element 221. The second end (grounding end) of the first feed element 221 extends toward the first position 201.

[0383] It should be understood that the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the grounding point can also be the length of the radiator 210 between the projection of the first end of the first power supply 221 on the frame 11 and the center of the radiator 210.

[0384] For the sake of brevity, the distance between the projection on the frame 11 and the grounding point (or the insulating gap of the radiator 210) described in the embodiments of this application (or, can be understood as the length of the radiator 210) can be understood accordingly. In the electronic device 10 shown in Figure 17, only the grounding point is used as an example for explanation, and will not be described in detail.

[0385] In one embodiment, the length of the radiator 210 between the projection of the first end (open end) of the first power supply 221 onto the frame 11 and the grounding point is less than or equal to one-quarter of the length of the radiator 210.

[0386] The length of the radiator 210 between the projection of the first end (ground end) of the second feeder 222 onto the frame 11 and the grounding point is less than or equal to half the length of the second feeder 222. The second end (open end) of the second feeder 222 extends toward the second position 202.

[0387] In one embodiment, the length of the radiator 210 between the projection of the first end (grounding end) of the second power supply 222 onto the frame 11 and the grounding point is less than or equal to one-quarter of the length of the radiator 210.

[0388] The first feed element 221 and the radiator 210 are used to generate a first resonance and a second resonance. In one embodiment, the first resonance and the second resonance are used to jointly support an operating frequency band (e.g., a first operating frequency band) of the electronic device 10.

[0389] The second feed element 222 and the radiator 210 are used to generate a third resonance and a fourth resonance. In one embodiment, the third resonance and the fourth resonance are used to jointly support an operating frequency band (e.g., a second operating frequency band) of the electronic device 10.

[0390] According to an embodiment of this application, the first and second ends of the radiator 210 are open ends, which can form a conformal antenna structure. In the electronic device 10, compared to the radiator 210 (which is the conductive portion in the frame 11), the first feed element 221 and the second feed element 222 have a poorer radiation environment (e.g., poor clearance, close proximity to adjacent metal components), and the antenna structure 200 does not generate radiation from the first feed element 221 and the second feed element 222. However, the first feed element 221 and the second feed element 222 can generate new current paths for the radiator 210, thereby generating new resonances (e.g., a second resonance and a fourth resonance) to extend the operating bandwidth of the antenna structure 200.

[0391] The first feed element 221 and the radiator 210 can form a first sub-antenna. The second feed element 222 and the radiator 210 can form a second sub-antenna.

[0392] When an electrical signal is fed into the first feeding circuit, the first sub-antenna can generate a first resonance and a second resonance, which together can support the first operating frequency band.

[0393] Because the first and second ends of the radiator 210 are open, a strong electric field and a weak current are present in the vicinity of the first and second ends. Conversely, a weak electric field and a strong current are present in the vicinity of the grounding point of the radiator 210 (a region at a certain distance from the grounding point, for example, within 5 mm). The first feed element 221 has an open first end and a grounded second end. The first feed element 221 has a weak current and a strong electric field in the vicinity of its first end, and a strong current and a weak electric field in the vicinity of its second end.

[0394] The grounding point of the radiator 210 is close to the first end of the first feeder 221. The region of the radiator 210 with a weaker electric field (stronger magnetic field) (the region near the grounding point) is close to the region of the first feeder 221 with a stronger electric field (weaker magnetic field). The radiator 210 and the first feeder 221 can be coupled through electric field and magnetic field coupling.

[0395] The radiator 210 can generate a first resonance and a second resonance using a linear CM mode. In one embodiment, the first feed element 221 excites the radiator 210 using a similar linear DM mode to generate the aforementioned first and second resonances.

[0396] When an electrical signal is fed into the second feeding circuit, the second sub-antenna can generate a third resonance and a fourth resonance, which together support the second operating frequency band.

[0397] Because the first and second ends of the radiator 210 are open, a strong electric field and a weak current are present in the vicinity of the first and second ends. Conversely, a weak electric field and a strong current are present in the vicinity of the grounding point of the radiator 210 (a region at a certain distance from the grounding point, for example, within 5 mm). The second feeder 222 has a grounded first end and an open second end. The first feeder 221 has a weak electric field and a strong current in the vicinity of its first end, and a weak current and a strong electric field in the vicinity of its second end.

[0398] The grounding point of the radiator 210 is close to the first end of the second feeder 222. The region of the radiator 210 with a weaker electric field (stronger magnetic field) (the region near the grounding point) is close to the region of the first feeder 221 with a weaker electric field (stronger magnetic field). The radiator 210 and the second feeder 222 can be coupled by electric field coupling (magnetic field coupling).

[0399] The radiator 210 can generate the third and fourth resonances using a line DM mode. In one embodiment, the second feed element 222 excites the radiator 210 using a similar slot DM mode to generate the aforementioned third and fourth resonances.

[0400] The first and second resonances can both be considered as generated by the linear CM mode, and the third and fourth resonances can both be considered as generated by the linear DM mode. Due to the good isolation between the linear CM and linear DM modes, there is also good isolation between the first and second operating frequency bands, resulting in a good operating bandwidth for the antenna structure.

[0401] Furthermore, since the first and second resonances are both generated by the same mode, the current on the radiator will not change abruptly in the first operating frequency band, and the radiation characteristics of the antenna structure will not change significantly (for example, the maximum radiation direction of the radiation pattern will shift significantly). Similarly, the third and fourth resonances can be understood accordingly.

[0402] In one embodiment, the first projection and the second projection do not overlap. The first projection is the projection of the first power supply 221 onto the frame 11, and the second projection is the projection of the second power supply 222 onto the frame 11.

[0403] It should be understood that the first power supply element 221 and the second power supply element 222 may be arranged in an alternating manner. In one embodiment, the first power supply element 221 and the second power supply element 222 do not overlap along a first direction. In one embodiment, the entire first power supply element 221 is located on one side of the length direction of the second power supply element 222. The entire second power supply element 222 is located on one side of the length direction of the first power supply element 221.

[0404] In one embodiment, the first and second resonators can be close to each other so that they jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the first and second resonators is in the range of 5% to 20% (greater than or equal to 5%, and less than or equal to 20%) of the low-frequency or high-frequency resonant point. In one embodiment, in the low-frequency band (less than or equal to 1 GHz, e.g., 698 MHz–960 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the mid-frequency band (in the range of 1 GHz–2 GHz, e.g., 1710 MHz–2170 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high-frequency band (in the range of 2 GHz–3 GHz, e.g., 2300 MHz–2690 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0405] In one embodiment, the third and fourth resonators can be close to each other so that they can jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the third and fourth resonators is in the range of 5% to 20% (greater than or equal to 5% and less than or equal to 20%) of the low-frequency or high-frequency resonant point. In one embodiment, in the low-frequency band (less than or equal to 1 GHz, e.g., 698 MHz-960 MHz), the frequency difference between the resonant point frequencies of the third and fourth resonators is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the mid-frequency band (in the range of 1 GHz-2 GHz, e.g., 1710 MHz-2170 MHz), the frequency difference between the resonant point frequencies of the third and fourth resonators is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high-frequency band (within the range of 2GHz-3GHz, for example, 2300MHz-2690MHz), the frequency difference between the resonant frequency of the third resonance and the resonant frequency of the fourth resonance is greater than or equal to 160MHz and less than or equal to 500MHz.

[0406] In one embodiment, at the resonant point of the first resonance, the currents on the radiators 210 on both sides of the grounding point are reversed, and each of the radiators 210 on both sides of the grounding point has a reverse current (or, the radiators have a current reversal point). At the resonant point of the second resonance, the currents on the radiators 210 on both sides of the grounding point are reversed, and each of the radiators 210 on both sides of the grounding point has a reverse current (or, the radiators have a current reversal point).

[0407] It should be understood that both the first and second resonances can be generated by the linear CM mode. Since the linear CM mode has high radiation efficiency and system efficiency, the antenna has good radiation efficiency and system efficiency within the operating frequency band formed by the first and second resonances.

[0408] In one embodiment, at the resonant points of the third and fourth resonances, the currents on the radiators 210 on both sides of the grounding point are in the same direction, and the radiators 210 on both sides of the grounding point do not have points where the currents are reversed.

[0409] It should be understood that both the third and fourth resonances can be generated by the line DM mode. Since the line DM mode is mainly radiated by the radiator 210, it is relatively easy to determine the maximum radiation direction of the pattern generated by the antenna structure 200.

[0410] In one embodiment, the center frequency f1 of the first operating frequency band and the center frequency f2 of the second operating frequency band satisfy: |f2-f1|≤f1×10%, or |f2-f1|≤f2×10%.

[0411] It should be understood that, since both the first feed element 221 and the second feed element 222 have a structure with one end grounded and the other open, the excitation modes of the first feed element 221 and the second feed element 222 are not entirely slot DM modes (or, can also be understood as line DM modes). Correspondingly, the modes generated by the radiator 210 excited by the first feed element 221 and the second feed element 222 are not entirely orthogonal line CM modes and line DM modes. Therefore, the isolation between the first and second operating frequency bands intersects with the resonant frequency band degradation generated by pure line CM modes and line DM modes. When there is a certain frequency difference between the first and second operating frequency bands, the antenna structure has good radiation characteristics (e.g., isolation) in both the first and second operating frequency bands.

[0412] Meanwhile, the embodiments of this application do not limit the center frequency f1 of the first operating frequency band to be higher or lower than the center frequency f2 of the second operating frequency band. It can be adjusted through a variety of different technical solutions, which will not be elaborated on for the sake of brevity.

[0413] In one embodiment, the first feed element 221 includes a first connection point. The antenna structure 200 may also include a first element. The first element is coupled between the first connection point and the ground plane 300.

[0414] In one embodiment, the second feed element 222 includes a second connection point. The antenna structure 200 may also include a second element. The second element is coupled between the second connection point and the ground plane 300.

[0415] It should be understood that the first element / second element can be used to adjust the resonant frequency of the second resonance / fourth resonance so that the first resonance and the second resonance / the third resonance and the fourth resonance can jointly support one operating frequency band of the electronic device 10.

[0416] In one embodiment, the first feed point 211 may be located at the open end of the first feed element 221. In one embodiment, an element (e.g., a capacitor) is coupled between the first feed point 211 and the first feed circuit 231 to better excite the first feed element 221.

[0417] In one embodiment, the distance between the ends of the first feed point 211 and the open end of the first feed member 221 (the length of the first feed member 221) is less than or equal to 3 mm, and the first feed member 221 can feed electrical signals in a side-feed manner.

[0418] In one embodiment, the distance between the first feed point 211 and the end of the ground terminal of the first feed element 221 (the length of the first feed element 221) is greater than half the length of the first feed element 221.

[0419] In one embodiment, the second feed point 212 may be located at the open end of the second feed element 222. In one embodiment, an element (e.g., a capacitor) is coupled between the second feed point 212 and the second feed circuit 232 to better excite the second feed element 222.

[0420] In one embodiment, the distance between the ends of the second feed point 212 and the open end of the second feed member 222 (the length of the second feed member 222) is less than or equal to 3 mm, and the first feed member 221 can feed the electrical signal in a side-feed manner.

[0421] In one embodiment, the distance between the ends of the second feed point 212 and the grounding terminal of the second feed element 222 (the length of the second feed element 222) is greater than half the length of the second feed element 222.

[0422] It should be understood that the first feed element 221 can be configured to resemble a left-handed antenna, making the size of the first feed element 221 smaller and the antenna structure more compact. Similarly, the second feed element 221 can be understood accordingly. The left-handed antenna can, for example, be an antenna conforming to a composite right and left hand (CRLH) transmission line structure.

[0423] In one embodiment, the projection of the first power supply element 221 onto the frame 11 is located between the first position 201 and the second position 202. In another embodiment, the projection of the first power supply element 221 onto the frame 11 is located between the first position 201 and the grounding point.

[0424] In one embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 12.5%. In another embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%.

[0425] In one embodiment, the ratio of the length of the overlapping portion of the first feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210) to the length of the first feeder 221 is greater than or equal to 50%.

[0426] In one embodiment, the projection of the second power supply element 222 onto the frame 11 is located between the first position 201 and the second position 202. In another embodiment, the projection of the second power supply element 222 onto the frame 11 is located between the second position 202 and the grounding point.

[0427] In one embodiment, the ratio of the length of the overlapping portion of the projection of the second feeder 222 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 12.5%. In another embodiment, the ratio of the length of the overlapping portion of the projection of the second feeder 222 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%.

[0428] In one embodiment, the ratio of the length of the overlapping portion of the second feeder 222 and the radiator 210 along the first direction (the overlapping portion of the projection of the second feeder 222 on the frame 11 and the radiator 210) to the length of the second feeder 222 is greater than or equal to 50%.

[0429] It should be understood that when the ratio of the length of the projection to the length of the feed element (or the ratio of the length of the projection to the length of the radiator 210) is within the above range, the radiator 210 can be better excited, and the antenna structure 200 has better radiation characteristics.

[0430] When the first position 201 and the second position 202 are respectively located on the first side 131 and the second side 132 where the borders intersect at an angle, the extension direction of the radiator 210 includes the extension direction of the first side (e.g., the x direction) and the extension direction of the second side (e.g., the y direction). The length of the overlapping portion can be understood as the sum of the length of the overlapping portion in the extension direction of the first side (e.g., the x direction) and the length of the overlapping portion in the extension direction of the second side (e.g., the y direction).

[0431] In one embodiment, the electrical length of the first feed element 221 is one-quarter of the first wavelength, and the electrical length of the radiator 210 is half of the first wavelength. The first wavelength is the wavelength corresponding to the center frequency between the first operating frequency band and the second operating frequency band.

[0432] In one embodiment, the electrical length of the first feed element 221 is half the electrical length of the radiator 210. In another embodiment, the physical length of the first feed element 221 is approximately half the physical length of the radiator 210.

[0433] It should be understood that, since the electronic components coupled to the first feed element 221 / radiator 210 can increase or decrease their physical length while maintaining a constant electrical length, the physical length L0 of the radiator 210 and the physical length L1 of the first feed element 221 satisfy the following condition: L0 × 25% ≤ L1 ≤ L0 × 50%. In one embodiment, the physical length L0 of the radiator 210 and the physical length L1 of the first feed element 221 satisfy the following condition: L0 × 35% ≤ L1 ≤ L0 × 75%.

[0434] In one embodiment, the electrical length of the second feed element 222 is one-quarter of the first wavelength, and the electrical length of the radiator 210 is one-half of the first wavelength.

[0435] In one embodiment, the electrical length of the second feeder 222 is half the electrical length of the radiator 210. In another embodiment, the physical length of the second feeder 222 is approximately half the physical length of the radiator 210.

[0436] It should be understood that, since the electronic components coupled to the second feed element 222 / radiator 210 can increase or decrease their physical length while maintaining a constant electrical length, the physical length L0 of the radiator 210 and the physical length L2 of the second feed element 222 satisfy the following condition: L0 × 25% ≤ L2 ≤ L0 × 50%. In one embodiment, the physical length L0 of the radiator 210 and the physical length L2 of the second feed element 222 satisfy the following condition: L0 × 35% ≤ L2 ≤ L0 × 75%.

[0437] In one embodiment, the minimum distance between the first power supply element 221 and the second power supply element 222 is less than or equal to half the length of the first power supply element 221 or half the length of the second power supply element 222. In another embodiment, the minimum distance between the first power supply element 221 and the second power supply element 222 is less than or equal to one-quarter the length of the first power supply element 221 or one-quarter the length of the second power supply element 222.

[0438] In one embodiment, the minimum distance between the first power supply element 221 and the second power supply element 222 is less than or equal to 5 mm.

[0439] It should be understood that the first feed element 221 and the second feed element 222 can be close to each other to make the layout of the antenna structure 200 more compact and easier to install in the increasingly cramped internal space of the electronic device 10. In one embodiment, the first end of the first feed element 221 and the first end of the second feed element 222 are opposite to each other and do not contact each other.

[0440] In one embodiment, the distance D between the first feed element 221 and / or the second feed element 222 and the radiator 210 is less than or equal to 5 mm, so that the first feed element 221 and / or the second feed element 222 and the radiator 210 have good coupling characteristics. In another embodiment, the distance D between the first feed element 221 and / or the second feed element 222 and the radiator 210 is less than or equal to 2 mm.

[0441] It should be understood that the distance D between the feeder 221 and the radiator 210 can be understood as the minimum distance between a point on the feeder 221 and a point on the radiator 210.

[0442] In one embodiment, the first power supply 221 and / or the second power supply 222 may be located on a bracket or back cover within the electronic device 10, similar to the layout shown in FIG11.

[0443] In one embodiment, the first power supply element 221 and / or the second power supply element 222 are strip-shaped.

[0444] It should be understood that "strip" can be interpreted as having a length much greater than its width, for example, a length greater than three times or six times its width. In one embodiment, the smallest dimension in the three-dimensional dimensions of the first feed element 221 and / or the second feed element 222 is its thickness. For example, when the first feed element 221 and / or the second feed element 222 can be disposed on the surface of the bracket, the dimension in the direction perpendicular to the surface of the bracket is the thickness. The dimensions of the first feed element 221 and / or the second feed element 222 other than the thickness can be understood as the length and width.

[0445] In one embodiment, the width of the first power supply element 221 and / or the second power supply element 222 may be less than or equal to 3 mm. In another embodiment, the width of the first power supply element 221 and / or the second power supply element 222 may be less than or equal to 2 mm.

[0446] Figures 18 and 19 show the simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 17. Figure 18 shows the S-parameter simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 17. Figure 19 shows the simulation results of the system efficiency and radiation efficiency of the antenna structure 200 in the electronic device 10 shown in Figure 17.

[0447] As shown in Figure 18, when an electrical signal is fed into the first feeding circuit, the antenna structure (S11) can resonate around 1.6 GHz and 1.9 GHz. The resonance around 1.6 GHz corresponds to the first resonance in the above embodiment, and the resonance around 1.9 GHz corresponds to the second resonance in the above embodiment.

[0448] When an electrical signal is fed into the second feeding circuit, the antenna structure (S22) can resonate around 2.2 GHz and 2.4 GHz. The resonance around 2.2 GHz corresponds to the third resonance in the above embodiment, and the resonance around 2.4 GHz corresponds to the fourth resonance in the above embodiment.

[0449] The first and second resonances can both be considered as generated by the line CM mode, and the third and fourth resonances can both be considered as generated by the line DM mode. Due to the good isolation between the line CM and line DM modes, with S11 / S22 < -5dB as the boundary, in the first operating frequency band (1.6GHz-1.9GHz) and the second operating frequency band (2.2GHz-2.5GHz), the isolation (S12 / S21) between the first and second sub-antennas is greater than 12dB, indicating good isolation between the first and second sub-antennas.

[0450] As shown in Figure 19, the first and second resonances are both generated by the line CM mode, and the third and fourth resonances are both generated by the line DM mode. The antenna structure will not produce a dent in the first operating frequency band (1.6GHz-1.9GHz) and the second operating frequency band (2.2GHz-2.5GHz).

[0451] Furthermore, the CM mode generally exhibits high radiation efficiency and system efficiency. Therefore, compared to the second operating frequency band (2.2GHz-2.5GHz), the antenna structure demonstrates better radiation efficiency and system efficiency within the first operating frequency band (1.6GHz-1.9GHz). Taking a system efficiency >-3dB as an example, the system efficiency bandwidth of the antenna structure within both the first and second operating frequency bands (1.6GHz-1.9GHz and 2.2GHz-2.5GHz) is greater than 250MHz.

[0452] Figures 20 to 23 are schematic diagrams of the current distribution of the antenna structure 200 in the electronic device 10 shown in Figure 17. Specifically, Figure 20 shows the current distribution of the antenna in Figure 17 at the first resonance point (1.66 GHz). Figure 21 shows the current distribution of the antenna in Figure 17 at the second resonance point (1.91 GHz). Figure 22 shows the current distribution of the antenna in Figure 17 at the third resonance point (2.27 GHz). Figure 23 shows the current distribution of the antenna in Figure 17 at the fourth resonance point (2.42 GHz).

[0453] As shown in Figure 20, at the resonant point of the first resonance, the currents on the radiators 210 on both sides of the grounding point are reversed, and there is a current zero point in the region near the grounding point (the current directions on both sides of the zero point are opposite). The current distribution on the radiators conforms to the current characteristics of the linear CM mode.

[0454] As shown in Figure 21, at the resonant point of the second resonance, the currents on the radiators 210 on both sides of the grounding point are reversed, and there is a current zero point in the region near the grounding point (the current directions on both sides of the zero point are opposite). The current distribution on the radiators conforms to the current characteristics of the linear CM mode.

[0455] As shown in Figure 22, at the resonant point of the third resonance, the currents on the radiators 210 on both sides of the grounding point are in the same direction, and there is no zero current point in the region near the grounding point. The current distribution on the radiators conforms to the current characteristics of the line DM mode.

[0456] As shown in Figure 23, at the resonant point of the fourth resonance, the currents on the radiators 210 on both sides of the grounding point are in the same direction, and there is no zero current point in the region near the grounding point. The current distribution on the radiators conforms to the current characteristics of the line DM mode.

[0457] Figure 24 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0458] As shown in Figure 24, the electronic device 10 includes a frame 11, an antenna structure 200, and a floor 300.

[0459] At least a portion of the frame 11 is spaced apart from the floor 300. The frame 11 includes a first position 201 and a second position 202. The frame 11 is coupled to the floor 300 at the first position 201 and the second position 202.

[0460] The frame 11 has a first insulating gap between the first position 201 and the second position 202.

[0461] In one embodiment, the width of the first insulating gap (the distance between the conductors on both sides of the insulating gap) is greater than or equal to 0.2 mm and less than or equal to 2 mm. For the sake of brevity, the insulating gaps on the frame 11 described in the embodiments of this application can be understood accordingly and will not be described in detail.

[0462] In one embodiment, the first insulating gap is located in the central region between the first position 201 and the second position 202. In one embodiment, the length D1 of the radiator 210 between the first position 201 and the first insulating gap and the length D2 of the radiator 210 between the second position 202 and the first insulating gap satisfy: D1×75%≤D2≤D1×125%.

[0463] It should be understood that when the lengths of the radiators 210 on both sides of the first insulating gap are approximately the same, the antenna structure 200 is more symmetrical. As the symmetry of the antenna structure 200 increases, the radiators 210 can be better excited, thereby giving the antenna structure 200 better radiation characteristics (e.g., bandwidth, radiation efficiency, etc.) at operating resonance.

[0464] The antenna structure 200 includes a radiator 210, a first feed element 221, a second feed element 222, a first feed circuit 231, and a second feed circuit 232.

[0465] The radiator 210 includes a conductive portion of the frame 11 between a first position 201 and a second position 202. The first and second ends of the radiator 210 are grounded. In one embodiment, the first and second ends of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively.

[0466] It should be understood that in the electronic device 10 shown in Figure 24, the relative positions of the radiator 210, the first feeder 221, and the second feeder 222 are similar to the layout in the electronic device 10 shown in Figure 17. This similarity can be understood as the first direction being perpendicular to the extension direction of the radiator 210. The extension direction of the first feeder 221 is the same as the extension direction of the radiator 210. Alternatively, it can be understood that the first end of the first feeder 221 is grounded and the second end is open, and the first end of the second feeder 222 is open and the second end is grounded. Alternatively, it can be understood that the length of the radiator 210 between the projection of the grounded end of one of the feeders 221 and the frame 11 and the insulating gap is less than or equal to half the length of the feeder 221, and the length of the radiator 210 between the projection of the open end of the other feeder 221 and the frame 11 and the insulating gap is less than or equal to half the length of the feeder 221.

[0467] According to an embodiment of this application, the first and second ends of the radiator 210 are grounded, which can form a slot antenna structure. In the electronic device 10, compared to the radiator 210 (which is the conductive portion in the frame 11), the first feed element 221 and the second feed element 222 have a poorer radiation environment (e.g., poor clearance, close proximity to adjacent metal components), and the antenna structure 200 does not generate radiation from the first feed element 221 and the second feed element 222. However, the first feed element 221 and the second feed element 222 can generate new current paths for the radiator 210, thereby generating new resonances (e.g., a second resonance and a fourth resonance) to extend the operating bandwidth of the antenna structure 200.

[0468] The first feed element 221 and the radiator 210 can form a first sub-antenna. The second feed element 222 and the radiator 210 can form a second sub-antenna.

[0469] When an electrical signal is fed into the first feeding circuit, the first sub-antenna can generate a first resonance and a second resonance, which together can support the first operating frequency band.

[0470] Since the first and second ends of the radiator 210 are grounded, a strong current and a weak electric field exist in the vicinity of the first and second ends of the radiator 210. Conversely, a weak current and a strong electric field exist in the vicinity of the first insulating gap of the radiator 210 (a region at a certain distance from the first insulating gap, for example, within 5 mm of the first insulating gap). Similarly, since the first and second ends of the first feeder 221 are grounded, a weak electric field and a strong current exist in the vicinity of the first and second ends of the first feeder 221.

[0471] The first insulating gap of the radiator 210 is close to the first end of the first feeder 221. The region of the radiator 210 with a strong electric field (weak magnetic field) (the region near the first insulating gap) is close to the region of the first feeder 221 with a weak electric field (strong magnetic field). The radiator 210 and the first feeder 221 can be coupled by electric field and magnetic field coupling.

[0472] The radiator 210 can generate a first resonance and a second resonance using a slot CM mode. In one embodiment, the first feed element 221 excites the radiator 210 using a similar slot DM mode to generate the aforementioned first and second resonances.

[0473] When an electrical signal is fed into the second feeding circuit, the second sub-antenna can generate a third resonance and a fourth resonance, which together support the second operating frequency band.

[0474] Because the first and second ends of the radiator 210 are grounded, a strong current and a weak electric field exist in the vicinity of the first and second ends. Conversely, a weak current and a strong electric field exist in the vicinity of the first insulating gap of the radiator 210 (a region at a certain distance from the first insulating gap, for example, within 5 mm). The second feeder 222 has an open first end and a grounded second end. The second feeder 222 has a weak current and a strong electric field in the vicinity of its first end, and a weak electric field and a strong current in the vicinity of its second end.

[0475] The first insulating gap of the radiator 210 is close to the first end of the first feeder 221. The region of the radiator 210 with a strong electric field (weak magnetic field) (the region near the first insulating gap of the radiator 210) is close to the region of the first feeder 221 with a strong electric field (weak magnetic field). The radiator 210 and the first feeder 221 can be coupled by electric field coupling (magnetic field coupling).

[0476] The radiator 210 can generate a third and a fourth resonance using a slot DM mode. In one embodiment, the second feed element 222 excites the radiator 210 using a similar line DM mode to generate the aforementioned third and fourth resonances.

[0477] The first and second resonances can both be considered as generated by the slot CM mode, and the third and fourth resonances can both be considered as generated by the slot DM mode. Due to the good isolation between the slot CM and slot DM modes, there is also good isolation between the first and second operating frequency bands, resulting in a good operating bandwidth for the antenna structure.

[0478] Furthermore, since the first and second resonances are both generated by the same mode, the current on the radiator will not change abruptly in the first operating frequency band, and the radiation characteristics of the antenna structure will not change significantly (for example, the maximum radiation direction of the radiation pattern will shift significantly). Similarly, the third and fourth resonances can be understood accordingly.

[0479] In one embodiment, the first projection and the second projection do not overlap. The first projection is the projection of the first power supply 221 onto the frame 11, and the second projection is the projection of the second power supply 222 onto the frame 11.

[0480] It should be understood that the first power supply element 221 and the second power supply element 222 may be arranged in an alternating manner. In one embodiment, the first power supply element 221 and the second power supply element 222 do not overlap along a first direction. In one embodiment, the entire first power supply element 221 is located on one side of the length direction of the second power supply element 222. The entire second power supply element 222 is located on one side of the length direction of the first power supply element 221.

[0481] In one embodiment, the first and second resonators can be close to each other so that they jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the first and second resonators is in the range of 5% to 20% (greater than or equal to 5%, and less than or equal to 20%) of the low-frequency or high-frequency resonant point. In one embodiment, in the low-frequency band (less than or equal to 1 GHz, e.g., 698 MHz–960 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the mid-frequency band (in the range of 1 GHz–2 GHz, e.g., 1710 MHz–2170 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high-frequency band (in the range of 2 GHz–3 GHz, e.g., 2300 MHz–2690 MHz), the frequency difference between the resonant point frequencies of the first and second resonators is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0482] In one embodiment, the third and fourth resonators can be close to each other so that they can jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the third and fourth resonators is in the range of 5% to 20% (greater than or equal to 5% and less than or equal to 20%) of the low-frequency or high-frequency resonant point. In one embodiment, in the low-frequency band (less than or equal to 1 GHz, e.g., 698 MHz-960 MHz), the frequency difference between the resonant point frequencies of the third and fourth resonators is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the mid-frequency band (in the range of 1 GHz-2 GHz, e.g., 1710 MHz-2170 MHz), the frequency difference between the resonant point frequencies of the third and fourth resonators is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high-frequency band (within the range of 2GHz-3GHz, for example, 2300MHz-2690MHz), the frequency difference between the resonant frequency of the third resonance and the resonant frequency of the fourth resonance is greater than or equal to 160MHz and less than or equal to 500MHz.

[0483] In one embodiment, at the resonance point of the first resonance and the resonance point of the second resonance, the currents on the radiators 210 on both sides of the first insulating gap are in the same direction, and the radiators 210 on both sides of the first insulating gap do not have points where the currents are reversed.

[0484] It should be understood that both the first and second resonances can be generated by the slot CM mode. Since the slot CM mode has high radiation efficiency and system efficiency, the antenna has good radiation efficiency and system efficiency in the operating frequency band formed by the first and second resonances.

[0485] In one embodiment, at the resonant point of the third resonance, the currents on the radiators 210 on both sides of the first insulating gap are reversed, and reverse currents are distributed on each of the radiators 210 on both sides of the first insulating gap (or, the radiators have current reversal points). At the resonant point of the fourth resonance, the currents on the radiators 210 on both sides of the first insulating gap are reversed, and reverse currents are distributed on each of the radiators 210 on both sides of the first insulating gap (or, the radiators have current reversal points).

[0486] It should be understood that both the third and fourth resonances can be generated by the slot DM mode. Since the slot DM mode is mainly radiated by the radiator 210, it is relatively easy to determine the maximum radiation direction of the radiation pattern generated by the antenna structure 200.

[0487] In one embodiment, the center frequency f1 of the first operating frequency band and the center frequency f2 of the second operating frequency band satisfy: |f2-f1|≤f1×10%, or |f2-f1|≤f2×10%.

[0488] It should be understood that, since both the first feed element 221 and the second feed element 222 have a structure with one end grounded and the other open, the excitation modes of the first feed element 221 and the second feed element 222 are not entirely slot DM modes (or, can also be understood as line DM modes). Correspondingly, the modes generated by the radiator 210 excited by the first feed element 221 and the second feed element 222 are not entirely orthogonal slot CM and slot DM modes. Therefore, the isolation between the first and second operating frequency bands intersects with the resonant frequency band degradation generated by pure slot CM and slot DM modes. When there is a certain frequency difference between the first and second operating frequency bands, the antenna structure has good radiation characteristics (e.g., isolation) in both the first and second operating frequency bands.

[0489] Meanwhile, the embodiments of this application do not limit the center frequency f1 of the first operating frequency band to be higher or lower than the center frequency f2 of the second operating frequency band. It can be adjusted through a variety of different technical solutions, which will not be elaborated on for the sake of brevity.

[0490] It should be understood that in the electronic device 10 shown in Figure 24, the layout of the first power supply element 221 and the second power supply element 222 is similar to that in the electronic device 10 shown in Figure 17. For the sake of brevity, similar parts will not be described in detail. The similar parts include: the first power supply element 221 may include connection points for connecting elements; the second power supply element 222 may include connection points for connecting elements; the positions of the power supply points on the first power supply element 221 and the second power supply element 222; and so on.

[0491] In one embodiment, the projection of the first power supply element 221 onto the frame 11 is located between the first position 201 and the second position 202. In another embodiment, the projection of the first power supply element 221 onto the frame 11 is located between the first position 201 and the first insulating gap.

[0492] In one embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 12.5%. In another embodiment, the ratio of the length of the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%.

[0493] In one embodiment, the ratio of the length of the overlapping portion of the first feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the first feeder 221 on the frame 11 and the radiator 210) to the length of the first feeder 221 is greater than or equal to 50%.

[0494] In one embodiment, the projection of the second power supply element 222 onto the frame 11 is located between the first position 201 and the second position 202. In another embodiment, the projection of the second power supply element 222 onto the frame 11 is located between the second position 202 and the first insulating gap.

[0495] In one embodiment, the ratio of the length of the overlapping portion of the projection of the second feeder 222 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 12.5%. In another embodiment, the ratio of the length of the overlapping portion of the projection of the second feeder 222 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%.

[0496] In one embodiment, the ratio of the length of the overlapping portion of the second feeder 222 and the radiator 210 along the first direction (the overlapping portion of the projection of the second feeder 222 on the frame 11 and the radiator 210) to the length of the second feeder 222 is greater than or equal to 50%.

[0497] Figures 25 and 26 show the simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 24. Figure 25 shows the S-parameter simulation results of the antenna structure 200 in the electronic device 10 shown in Figure 24. Figure 26 shows the simulation results of the system efficiency and radiation efficiency of the antenna structure 200 in the electronic device 10 shown in Figure 24.

[0498] As shown in Figure 25, when an electrical signal is fed into the first feeding circuit, the antenna structure (S11) can resonate near 1.7 GHz and 2.2 GHz. The resonance near 1.7 GHz corresponds to the first resonance in the above embodiment, and the resonance near 2.2 GHz corresponds to the second resonance in the above embodiment.

[0499] When an electrical signal is fed into the second feeding circuit, the antenna structure (S22) can resonate around 3.1 GHz and 3.3 GHz. The resonance around 3.1 GHz corresponds to the third resonance in the above embodiment, and the resonance around 3.3 GHz corresponds to the fourth resonance in the above embodiment.

[0500] The first and second resonances can both be considered as generated by the line CM mode, and the third and fourth resonances can both be considered as generated by the line DM mode. Due to the good isolation between the line CM and line DM modes, with S11 / S22 < -4dB as the boundary, in the first operating frequency band (1.7GHz-2.2GHz) and the second operating frequency band (3GHz-3.4GHz), the isolation (S12 / S21) between the first and second sub-antennas is greater than 12dB, indicating good isolation between the first and second sub-antennas.

[0501] As shown in Figure 26, the first and second resonances are both generated by the line CM mode, and the third and fourth resonances are both generated by the line DM mode. The antenna structure will not produce a dent in the first operating frequency band (1.7GHz-2.2GHz) and the second operating frequency band (3GHz-3.4GHz).

[0502] Furthermore, the CM mode generally exhibits high radiation efficiency and system efficiency. Therefore, compared to the second operating frequency band (2.2GHz-2.5GHz), the antenna structure demonstrates better radiation efficiency and system efficiency within the first operating frequency band (1.7GHz-2.2GHz). Taking a system efficiency >-4dB as an example, the system efficiency bandwidth of the antenna structure within both the first and second operating frequency bands (1.7GHz-2.2GHz and 2.2GHz-2.5GHz) is greater than 300MHz.

[0503] Figure 27 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0504] As shown in Figure 27, the frame 11 includes a first position 201 and a second position 202. The frame 11 has a second insulating gap 252 at the first position 201. The frame 11 is coupled to the floor 300 at the second position 202.

[0505] The frame 11 has a first insulating gap 251 between the first position 201 and the second position 202.

[0506] The radiator 210 includes a conductive portion of the frame 11 between a first position 201 and a second position 202. The first end of the radiator 210 is an open end, and the second end is a grounded end. In one embodiment, the first end and the second end of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively.

[0507] It should be understood that the difference between the antenna structure 200 in the electronic device 10 shown in Figure 27 and the antenna structure 200 in the electronic device 10 shown in Figure 24 lies only in the boundary conditions of the radiator 210.

[0508] In the antenna structure 200 shown in Figure 24, the first and second ends of the radiator 210 are grounded. In the antenna structure 200 shown in Figure 27, the first end of the radiator 210 is an open end and the second end is grounded.

[0509] In the antenna structure 200 shown in Figures 24 and 27, the radiator 210 has a first insulating gap 251. When the first insulating gap 251 of the radiator 210 is close to the first end of the first feed element 221, the region of the radiator 210 with a stronger electric field (weaker magnetic field) (the region near the first insulating gap) is close to the region of the first feed element 221 with a weaker electric field (stronger magnetic field). The radiator 210 and the first feed element 221 can be coupled through electric and magnetic field coupling. The radiator 210 can generate a first resonance and a second resonance in slot CM mode. When the first insulating gap 251 of the radiator 210 is close to the first end of the first feeder 221, the region of the radiator 210 with a stronger electric field (weaker magnetic field) (the region near the first insulating gap of the radiator 210) is close to the region of the first feeder 221 with a stronger electric field (weaker magnetic field). The radiator 210 and the first feeder 221 can be coupled through electric field coupling (magnetic field coupling). The radiator 210 can generate a third and fourth resonance using the slot DM mode.

[0510] Therefore, the antenna structure 200 shown in Figure 27 can also have the same radiation characteristics as the antenna structure 200 shown in Figure 24.

[0511] For the sake of brevity, the parts of the antenna structure 200 shown in Figure 27 that are similar to those in the antenna structure 200 shown in Figure 24 will not be described in detail. For example, similar parts include the position of the radiator 210 and its positional relationship with the first feed element 221 and the second feed element 222; the relative positional relationship between the first insulating gap and the first feed element 221 and the second feed element 222; the boundary conditions (open end or ground end) of the first feed element 221 and the second feed element 222; the relationship between the first operating frequency band and the second operating frequency band; the shape of the feed element 221, for example, it is strip-shaped; etc.

[0512] In one embodiment, the length D1 of the radiator 210 between the first position 201 and the first insulating gap and the length D2 of the radiator 210 between the second position 202 and the first insulating gap satisfy: D2×150%≤D1.

[0513] In one embodiment, the electrical length of the radiator 210 is greater than half the first wavelength, the antenna structure 200 has a larger radiating aperture, and the antenna structure 200 can also have better radiation characteristics.

[0514] It should be understood that in the above embodiments, the first power supply component 221 and the second power supply component 222 are described as being close to each other (for example, the minimum distance between the first power supply component 221 and the second power supply component 222 is less than or equal to 5 mm). In actual production or design, the first power supply component 221 and the second power supply component 222 can also be far apart from each other. In one embodiment, the minimum distance between the first power supply component 221 and the second power supply component 222 is greater than 5 mm. In another embodiment, the minimum distance between the first power supply component 221 and the second power supply component 222 is greater than half the length of the first power supply component 221 and / or half the length of the second power supply component 222.

[0515] As shown in Figure 28, the first end of the first power supply element 221 is close to the second insulating gap 252 (first position 201). In one embodiment, the length of the radiator 210 between the projection of the first end (ground end) of the first power supply element 221 on the frame 11 and the second insulating gap 252 (first position 201) is less than or equal to half the length of the first power supply element 221. In another embodiment, the length of the radiator 210 between the projection of the first end (ground end) of the first power supply element 221 on the frame 11 and the second insulating gap 252 (first position 201) is less than or equal to one-quarter the length of the first power supply element 221.

[0516] It should be understood that in the antenna structure 200 shown in Figure 28, the first end of the first feed element 221 is coupled to the first end of the radiator 210 (one end at the second insulating gap 252) through electric and magnetic field coupling, exciting the radiator 210 to generate the aforementioned first and second resonances in slot CM mode. Meanwhile, the first end of the second feed element 222 is coupled to the first insulating gap 251 of the radiator 210 through electric field coupling (magnetic field coupling), exciting the radiator 210 to generate the aforementioned third and fourth resonances in slot DM mode.

[0517] For the sake of brevity, the above embodiments can be understood as follows: the first power supply element 221 and the second power supply element 222 are far apart from each other (or, it can be understood that the radiator 210 includes multiple grounding points or multiple insulating gaps). They will not be described in detail here.

[0518] Figure 28 shows that in one embodiment, the radiator 210 includes a grounding point 253 between the first insulating gap 251 and the second insulating gap 252.

[0519] The first end (open end) of the first feed element 221 is close to the grounding point 253. In one embodiment, the length of the radiator 210 between the projection of the first end (open end) of the first feed element 221 on the frame 11 and the grounding point 253 is less than or equal to half the length of the first feed element 221. In another embodiment, the length of the radiator 210 between the projection of the first end (open end) of the first feed element 221 on the frame 11 and the grounding point xx is less than or equal to one-quarter the length of the first feed element 221.

[0520] The first end (open end) of the second feed element 222 is close to the first insulating gap 251. In one embodiment, the length of the radiator 210 between the projection of the first end (open end) of the second feed element 222 on the frame 11 and the insulating gap is less than or equal to half the length of the second feed element 222. In another embodiment, the length of the radiator 210 between the projection of the first end (open end) of the second feed element 222 on the frame 11 and the insulating gap is less than or equal to one-quarter the length of the second feed element 222.

[0521] It should be understood that in the antenna structure 200 shown in Figure 28, the first end of the first feed element 221 is coupled to the grounding point xx of the radiator 210 through electric and magnetic field coupling, thereby exciting the radiator 210 to generate the aforementioned first and second resonances. Meanwhile, the first end of the second feed element 222 is coupled to the insulating gap of the radiator 210 through electric field coupling (magnetic field coupling), thereby exciting the radiator 210 to generate the aforementioned third and fourth resonances.

[0522] For the sake of brevity, the above embodiments can be understood as follows: the radiator 210 includes both grounding point 253 and first insulating gap 251 and second insulating gap 252. These will not be elaborated further.

[0523] Figure 29 is a schematic diagram of another electronic device 10 provided in an embodiment of this application.

[0524] It should be understood that in the above embodiments, when the radiator 210 is a wire antenna with both ends of the ground point being open, or a slot antenna with both ends of the insulating gap being grounded (for example, the radiator 210 shown in Figures 14, 15, 17, and 24), the radiator 210 can be understood as being composed of two branches with the first end grounded and the second end open.

[0525] When the radiator 210 is a linear antenna with open ends including the grounding point, the radiator 210 can be understood as being formed by two branches with the first end grounded and the second end open, with the grounding ends close together.

[0526] In one embodiment, as shown in FIG29(a), the grounding terminals of the two stubs may further include an additional portion 210a. In one embodiment, as shown in FIG29(b), the grounding terminals of the two stubs may further have an insulating gap.

[0527] When the radiator 210 is a slot antenna with both ends grounded, including an insulating gap, the radiator 210 can be understood as being formed by two branches with the first end grounded and the second end open, with the open ends close together.

[0528] In one embodiment, as shown in (c) of FIG29, an additional portion 210b may be included between the open ends of the two branches.

[0529] In one embodiment, when the antenna 200 includes a first feed element 221 and a second feed element 222, the first feed element 221 and the second feed element 222 can also generate corresponding first resonance, second resonance, third resonance and fourth resonance by the technical solutions in the above embodiments. Similar parts will not be described in detail.

[0530] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An antenna structure, characterized in that, include: floor; A frame, at least partially spaced from the floor, the frame including a first position and a second position, the frame having a first insulating gap or coupled to the floor at the first position, the frame being coupled to the floor at the second position, and the frame having a second insulating gap between the first position and the second position; A radiator, wherein the radiator is the conductive portion of the frame between the first position and the second position; The first power supply element has a first end that is a grounded end and a second end that is an open end. The radiator and the first power supply element are spaced apart. The radiator and the first power supply element overlap at least partially along a first direction. The first direction is perpendicular to the extension direction of the radiator, and the extension direction of the first power supply element is in the same direction as the extension direction of the radiator. The second power supply element has a first open end and a second grounded end. The radiator and the second power supply element are spaced apart. The radiator and the second power supply element overlap at least partially along the first direction, and the extension direction of the second power supply element is the same as the extension direction of the radiator. A first feeding circuit, the first feeding element including a first feeding point, the first feeding circuit coupled to the first feeding point, the first feeding circuit being used to feed in a radio frequency signal of a first operating frequency band; The second feeding circuit includes a second feeding point, the second feeding device is coupled to the second feeding point, and the second feeding circuit is used to feed in the radio frequency signal of the second operating frequency band; Wherein, the length of the radiator between the projection of the first end of the first power supply component on the frame and the second insulating gap is less than or equal to half the length of the first power supply component, and the second end of the first power supply component extends toward the first position. The length of the radiator between the projection of the first end of the second feeder on the frame and the second insulating gap is less than or equal to half the length of the second feeder, and the second end of the second feeder extends toward the second position; The first feed element and the radiator are used to generate a first resonance and a second resonance, which together support the first operating frequency band. The second feed element and the radiator are used to generate a third resonance and a fourth resonance, which together support the second operating frequency band.

2. The antenna structure according to claim 1, characterized in that, The center frequency f1 of the first operating frequency band and the center frequency f2 of the second operating frequency band satisfy: |f2-f1|≤f1×10%, or |f2-f1|≤f2×10%.

3. The antenna structure according to claim 1 or 2, characterized in that, The frame is coupled to the floor at the first position, and the length D1 of the radiator between the first position and the second insulating gap and the length D2 of the radiator between the second position and the second insulating gap satisfy: D1×75%≤D2≤D1×125%.

4. The antenna structure according to any one of claims 1 to 3, characterized in that, The frame has the first insulating gap at the first position, and the radiator length D1 between the first position and the second insulating gap and the radiator length D2 between the second position and the second insulating gap satisfy: D2×150%≤D1.

5. The antenna structure according to any one of claims 1 to 4, characterized in that, The minimum distance between the first power supply component and the second power supply component is less than or equal to half the length of the first power supply component or half the length of the second power supply component.

6. The antenna structure according to any one of claims 1 to 5, characterized in that, The minimum distance between the first power supply component and the second power supply component is less than or equal to 5 mm.

7. The antenna structure according to any one of claims 1 to 6, characterized in that, The first projection and the second projection do not overlap. The first projection is the projection of the first power supply component on the frame, and the second projection is the projection of the second power supply component on the frame.

8. The antenna structure according to any one of claims 1 to 7, characterized in that, The physical length L0 of the radiator and the physical length L1 of the first feeder satisfy: L0×25%≤L1≤L0×50%, and / or, The physical length L0 of the radiator and the physical length L2 of the second feeder satisfy the following condition: L0×25%≤L2≤L0×50%.

9. The antenna structure according to any one of claims 1 to 8, characterized in that, The distance between the first feed element and the radiator is less than or equal to 5 mm, and / or, The distance between the second power supply element and the radiator is less than or equal to 5 mm.

10. The antenna structure according to any one of claims 1 to 9, characterized in that, Based on the fact that the resonant frequency of the first resonance and / or the resonant frequency of the second resonance is less than or equal to 1 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz. Based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. Based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 2GHz and less than or equal to 3GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 160MHz and less than or equal to 500MHz.

11. An antenna structure, characterized in that, include: floor; A frame, at least partially spaced from the floor, the frame including a first position and a second position, the frame having a first insulating gap at the first position, the frame having a second insulating gap at the second position, and a grounding point between the first position and the second position, the grounding point being coupled to the floor; A radiator, wherein the radiator is the conductive portion of the frame between the first position and the second position; The first power supply element has a first open end and a second grounded end. The radiator and the first power supply element are spaced apart. The radiator and the first power supply element overlap at least partially along a first direction. The first direction is perpendicular to the extension direction of the radiator, and the extension direction of the first power supply element is in the same direction as the extension direction of the radiator. The second power supply element has a first end that is grounded and a second end that is open. The radiator and the second power supply element are spaced apart. The radiator and the second power supply element overlap at least partially along the first direction, and the extension direction of the second power supply element is the same as the extension direction of the radiator. A first feeding circuit, the first feeding element including a first feeding point, the first feeding circuit coupled to the first feeding point, the first feeding circuit being used to feed in a radio frequency signal of a first operating frequency band; The second feeding circuit includes a second feeding point, the second feeding device is coupled to the second feeding point, and the second feeding circuit is used to feed in the radio frequency signal of the second operating frequency band; Wherein, the length of the radiator between the projection of the first end of the first power supply component on the frame and the grounding point is less than or equal to half the length of the first power supply component, and the second end of the first power supply component extends toward the first position. The length of the radiator between the projection of the first end of the second feeder on the frame and the grounding point is less than or equal to half the length of the second feeder, and the second end of the second feeder extends toward the second position; The first feed element and the radiator are used to generate a first resonance and a second resonance, which together support the first operating frequency band. The second feed element and the radiator are used to generate a third resonance and a fourth resonance, which together support the second operating frequency band.

12. The antenna structure according to claim 11, characterized in that, The length D1 of the radiator between the first position and the grounding point and the length D2 of the radiator between the second position and the grounding point satisfy: D1×75%≤D2≤D1×125%.

13. An antenna structure, characterized in that, include: floor; A frame, at least partially spaced from the floor, the frame including a first position and a second position, the frame having a first gap and a second gap at the first position and the second position, respectively; A radiator, wherein the radiator is the conductive portion of the frame between the first position and the second position; The first power supply element has a first open end and a second grounded end. The radiator and the first power supply element are spaced apart and at least partially overlap along a first direction. The first direction is perpendicular to the extension direction of the radiator, and the extension direction of the first power supply element is in the same direction as the extension direction of the radiator. A first power supply circuit, wherein the first power supply component includes a first power supply point, and the first power supply circuit is coupled to the first power supply point; The first feed element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support the first operating frequency band. The first power supply circuit is used to feed the first power supply component with the radio frequency signal of the first operating frequency band.

14. The antenna structure according to claim 13, characterized in that, The second terminal of the first power supply component is directly grounded or grounded through an inductive device; The length of the radiator between the projection of the second end of the first power feeder on the frame and the grounding point is less than or equal to half the length of the first power feeder.

15. The antenna structure according to claim 13 or 14, characterized in that, The physical length L0 of the radiator and the physical length L1 of the first feeder satisfy the following condition: L0×25%≤L1≤L0×50%.

16. The antenna structure according to any one of claims 13 to 15, characterized in that, The ratio of the length of the overlapping portion of the projection of the first feeder on the frame and the radiator to the length of the first feeder is greater than or equal to 50%.

17. The antenna structure according to any one of claims 13 to 16, characterized in that, The distance D between the first power supply element and the radiator is less than or equal to 5 mm.

18. The antenna structure according to any one of claims 13 to 17, characterized in that, The frame includes a grounding point located in the central region between the first position and the second position, and the frame is coupled to the floor at the grounding point.

19. The antenna structure according to any one of claims 13 to 18, characterized in that, Based on the fact that the resonant frequency of the first resonance and / or the resonant frequency of the second resonance is less than or equal to 1 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz. Based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. Based on the resonant frequency of the first resonance and / or the resonant frequency of the second resonance being greater than 2GHz and less than or equal to 3GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 160MHz and less than or equal to 500MHz.

20. An electronic device, characterized in that, The electronic device includes an antenna structure as described in any one of claims 1 to 19.

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