Antenna structures and electronics

Abstract

The present disclosure relates to an antenna structure and an electronic device. The antenna structure includes: a metal frame, the metal frame includes a plate body, a first radiator, a second radiator, a first slit, a first clearance, and a second clearance, the first radiator and the second radiator are respectively connected to the plate body, the first clearance is located between the first radiator and the plate body, the second clearance is located between the second radiator and the plate body, the spacing distance between the ends of the first clearance and the second clearance facing each other is less than or equal to a preset distance, and the first slit is provided on the second radiator; a first feed point, the first feed point is electrically connected to the first radiator; a second feed point, the second feed point is electrically connected to the second radiator; wherein, when a signal is fed into the first feed point and no signal is fed into the second feed point, the first radiator and the second radiator are stimulated to generate resonance within the 5G frequency band; when a signal is fed into the second feed point, the second radiator is stimulated to generate resonance within the 4G frequency band.

Description

Technical Field

[0001] The present disclosure relates to the field of terminal technology, and in particular to an antenna structure and an electronic device. Background Art

[0002] Currently, in some related technologies, the bandwidth that can be covered by electronic devices can be expanded by designing the shape of the radiator or by adding additional electronic devices using matching circuits.

[0003] However, as the clearance environment inside electronic equipment becomes increasingly demanding, it is often difficult to match the shape and volume of the radiator. The addition of additional electronic devices also increases the requirements for the clearance environment, while increasing production costs and signal loss. Summary of the Invention

[0004] The present disclosure provides an antenna structure and an electronic device to address the deficiencies in the related art.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided an antenna structure, including:

[0006] A metal frame, the metal frame comprising a plate body, a first radiator, a second radiator, a first slit, a first clearance, and a second clearance, the first radiator and the second radiator being respectively connected to the plate body, the first clearance being located between the first radiator and the plate body, the second clearance being located between the second radiator and the plate body, the spacing between mutually facing ends of the first clearance and the second clearance being less than or equal to a preset distance, and the first slit being provided on the second radiator;

[0007] a first feeding point electrically connected to the first radiator;

[0008] a second feeding point electrically connected to the second radiator;

[0009] When a signal is fed into the first feeding point, no signal is fed into the second feeding point, so as to stimulate the first radiator and the second radiator to generate resonance within the 5G frequency band;

[0010] When a signal is fed into the second feeding point, the second radiator is stimulated to generate resonance within the 4G frequency band.

[0011] Optionally, the metal frame further includes a second slit, a third clearance, a fourth clearance and a third radiator, the third radiator is connected to the plate body, the third clearance is located between the third radiator and the plate body, the fourth clearance is located between the second radiator and the plate body, the spacing distance between the ends of the third clearance and the fourth clearance facing each other is less than or equal to a preset distance, the end of the fourth clearance away from the third clearance and the end of the second clearance away from the first clearance are arranged opposite to each other, separating the second radiator into a first sub-radiator and a second sub-radiator, the second feeding point is electrically connected to the first sub-radiator, the first slit is provided on the first sub-radiator, and the second slit is provided on the second sub-radiator;

[0012] The antenna structure further includes a third feed point and a fourth feed point, the third feed point being electrically connected to the third radiator, and the fourth feed point being electrically connected to the second sub-radiator;

[0013] When a signal is fed into the third feeding point, no signal is fed into the fourth feeding point, so as to stimulate the second sub-radiator and the third radiator to generate resonance within the 5G frequency band;

[0014] When the fourth feeding point feeds a signal, it excites the second sub-radiator to generate resonance within the 4G frequency band, and the frequency band of the resonance generated by the second sub-radiator is different from the frequency band of the resonance generated by the first sub-radiator.

[0015] Optionally, when a signal is fed into the fourth feeding point, the second sub-radiator is stimulated to generate resonance within a frequency band of 1710 MHz to 2690 MHz;

[0016] When a signal is fed into the second feeding point, the first sub-radiator is stimulated to generate resonance within a frequency band of 698 MHz to 960 MHz.

[0017] Optionally, when signals are fed into the first feeding point and the third feeding point and no signals are fed into the second feeding point and the fourth feeding point, the first radiator, the second radiator and the third radiator are excited to generate multiple resonances within the 3.3 GHz-4.4 GHz frequency band.

[0018] Optionally, the first sub-radiator is excited to generate a 1λ slot mode, generating a resonance covering a first frequency band with a center frequency around 3.32 GHz;

[0019] The first radiator is excited to generate a 0.5λ ring mode to generate resonance covering a second frequency band with a center frequency of approximately 4.06 GHz;

[0020] The first sub-radiator includes a first bending section and a second bending section connected to the first bending section, the first bending section corresponds to an end of the second clearance away from the first clearance, the second bending section corresponds to an end of the second clearance close to the first clearance, and the second bending section is excited to generate a 1λ slot mode to generate resonance covering a third frequency band with a center frequency near 4.3 GHz.

[0021] Optionally, the 0.5λ ring mode generated by the excitation of the third radiator and the 0.5λ ring mode generated by the excitation of the second sub-radiator cooperate to generate resonance covering a fourth frequency band with a center frequency of approximately 3.6 GHz;

[0022] The 1λ ring mode generated by the excitation of the third radiator and the second sub-radiator generates resonance covering a fifth frequency band with a center frequency of approximately 4.4 GHz.

[0023] Optionally, the metal frame is arranged in a rectangular shape, the first break is located at the first long side of the metal frame, the second break is located at the second long side of the metal frame, and the first long side and the second long side are arranged opposite to each other.

[0024] Optionally, also include:

[0025] A first coupling branch, wherein the first coupling branch includes a first branch and a second branch vertically connected to the first branch, the second branch is parallel to the third radiator and extends toward the second break, and an end of the first branch away from the second branch is electrically connected to the third feeding point.

[0026] Optionally, also include:

[0027] The second coupling branch includes a third branch and a fourth branch vertically connected to the third branch, the fourth branch is parallel to the first radiator and extends toward the first fracture, and the end of the third branch away from the fourth branch is electrically connected to the first feeding point.

[0028] Optionally, the preset distance is equal to 1 mm.

[0029] According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, comprising the antenna structure as described in any one of the above embodiments.

[0030] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0031] It can be seen from the above embodiments that the present disclosure adjusts the distance between the first clearance and the second clearance and reuses the second radiator to generate resonance within the 5G frequency band, which is beneficial for expanding the bandwidth of the 5G frequency band covered by the antenna structure without adding additional tuning circuits or components or additional 5G radiators.

[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0034] Figure 1 The figure is a schematic structural diagram of an antenna structure according to an exemplary embodiment.

[0035] Figure 2 FIG. 1 is an S11 graph of an antenna formed by a first radiator and a second radiator when the first clearance and the second clearance are at different intervals according to an exemplary embodiment.

[0036] Figure 3 is a structural diagram showing another antenna structure according to an exemplary embodiment.

[0037] Figure 4 FIG. 1 is an S11 graph of an antenna formed by a third radiator and a second sub-radiator when the third clearance and the fourth clearance are at different intervals according to an exemplary embodiment.

[0038] Figure 5 It is a current distribution diagram of the antenna structure when covering the first frequency band with 3.32 GHz as the center frequency.

[0039] Figure 6 It is a current distribution diagram of the antenna structure when covering the first frequency band with a center frequency of 4.06 GHz.

[0040] Figure 7 It is a current distribution diagram of the antenna structure when covering the first frequency band with 4.3 GHz as the center frequency.

[0041] Figure 8 It is a current distribution diagram of the antenna structure when covering the first frequency band with 3.6 GHz as the center frequency.

[0042] Figure 9 It is a current distribution diagram of the antenna structure when covering the first frequency band with 4.4 GHz as the center frequency.

[0043] Figure 10is a structural diagram showing another antenna structure according to an exemplary embodiment. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0045] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0046] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0047] Figure 1 FIG. 1 is a schematic structural diagram of an antenna structure 100 according to an exemplary embodiment. Figure 1As shown, the antenna structure 100 may include a metal frame 1, a first feed point 2, and a second feed point 3. The metal frame 1 may include a plate body 11, a first radiator 12, a second radiator 13, a first slit 14, a first clearance 15, and a second clearance 16. It can be understood that when the metal frame 1 is a plate-like structure, the first clearance 15 and the second clearance 16 are formed on the plate-like structure, thereby separating the plate-like structure into the first radiator 12, the second radiator 13, and the plate body 11. Specifically, the first clearance 15 is located between the first radiator 12 and the board body 11, the second clearance 16 is located between the second radiator 13 and the board body 11, and the first radiator 12 and the second radiator 13 are both connected to the board body 11 to achieve grounding; the first clearance 15 and the second clearance 16 extend toward each other respectively, and one end of the first clearance 15 and one end of the second clearance 16 are close to each other. The first slit 14 is set on the second radiator 13, separating the second radiator 13 into a main branch 131 and a coupling branch 132. The first feed point 2 is electrically connected to the first radiator 12, and the second feed point 3 is electrically connected to the second radiator 13. Specifically, it can be electrically connected to the main branch 131 of the second radiator 13, and then coupled to the coupling branch 132 through the gap of the first slit 14 to excite the coupling branch 132 to generate resonance.

[0048] In this embodiment, when the second feeding point 3 is fed with an electrical signal, the second radiator 13 can be stimulated to generate resonance within the 4G frequency band. Since the first radiator 12 and the second radiator 13 are relatively close to each other, when a signal is fed into the first feeding point 2 and no signal is fed into the second feeding point 3, the second radiator 13 will inevitably be stimulated to generate resonance. Figure 2 As shown, it can be seen that as the spacing distance D between the ends facing each other between the first clearance 15 and the second clearance 16 changes, the degree to which the signal fed into the first feed point 2 excites the second radiator 13 is different. Specifically, as the spacing distance D1 decreases, the degree to which the second radiator 13 is excited is higher. Therefore, the spacing distance D1 between the ends facing each other between the first clearance 15 and the second clearance 16 can be set to be less than or equal to a preset distance, which can be equal to 1 mm. Taking the spacing distance D1 equal to 1 mm as an example, when a signal is fed into the first feed point 2 and no signal is fed into the second feed point 3, the first radiator 12 and the second radiator 13 can be excited to generate resonance within the 5G frequency band. Compared with the solution in which the signal fed into the first feed point 2 nearly excites the first radiator 12 to generate resonance within the 5G frequency band, the present disclosure adjusts the spacing between the first clearance 15 and the second clearance 16 to reuse the second radiator 13 to generate resonance within the 5G frequency band, which is beneficial for expanding the bandwidth of the 5G frequency band covered by the antenna structure 100 without adding tuning circuits or components or additional 5G radiators.

[0049] It should be noted that in the embodiments provided in the present disclosure, the coupling branch 132 of the second radiator 13 is set close to the first radiator 12 for illustration. In fact, in other embodiments, the main branch 131 of the second radiator 13 may also be set close to the first radiator 12, and the present disclosure does not limit this.

[0050] It is understandable that the 4G frequency band signal can generally include low-band 4G signals and medium- and high-band 4G signals. Figure 1 In the embodiment shown, the second radiator 13 can cover low-frequency 4G signals or medium-high frequency 4G signals. In other embodiments, the second radiator 13 may also be required to cover low-frequency 4G signals or medium-high frequency 4G signals at the same time, in which case the second radiator 13 needs to be modified. Figure 3 As shown, the metal frame 1 may further include a second slit 17, a third clearance 18, a fourth clearance 19 and a third radiator 110, wherein the third radiator 110 is connected to the board body 11, the third clearance 18 is located between the third radiator 110 and the board body 11, the second clearance 16 and the fourth clearance 19 are both located between the second radiator 13 and the board body 11, and the end of the fourth clearance 19 away from the third clearance 18 and the end of the second clearance 16 away from the first clearance 15 are arranged opposite to each other. The second radiator 13 can be separated into a first sub-radiator 133 and a second sub-radiator 134 by the fourth clearance 19 and the second clearance 16. The second feed point 3 is electrically connected to the first sub-radiator 133, separating the first sub-radiator 133 into a main branch 131 and a coupling branch 132. The first slit 14 is set on the first sub-radiator 133, and the second slit 17 is set on the second sub-radiator 134.

[0051] The antenna structure 100 may further include a third feed point 4 and a fourth feed point 5. The third feed point 4 is electrically connected to the third radiator 110, and the fourth feed point 5 may be electrically connected to the second sub-radiator 134, thereby separating the second sub-radiator 134 into a main branch 135 and a coupling branch 136. Thus, when a signal is fed into the fourth feed point 5, the second sub-radiator 134 is stimulated to resonate within the 4G frequency band. The frequency band of the resonance generated by the second sub-radiator 134 is different from the frequency band of the resonance generated by the first sub-radiator 133. For example, when the length of the first sub-radiator 133 is greater than the length of the second sub-radiator 134, the resonance generated by the first sub-radiator 133 may be within the low frequency band of the 4G frequency band, for example, the second sub-radiator 134 may resonate within the range of 698 MHz to 960 MHz. The resonance generated by the second sub-radiator 134 may be within the mid- to high frequency band of the 4G frequency band, for example, the second sub-radiator 134 may resonate within the range of 1710 MHz to 2690 MHz.

[0052] In this embodiment, the signal fed into the first feeding point 2 can excite the first radiator 12 and the first sub-radiator 134 to generate resonance within the 5G frequency band; further, as Figure 4 As shown, the study found that as the spacing distance D2 between the ends facing each other between the fourth clearance 19 and the third clearance 18 changes, the degree to which the signal fed into the third feed point 4 excites the second sub-radiator 134 is different. Specifically, as the spacing distance D2 decreases, the degree to which the second sub-radiator 134 is excited is higher. Therefore, the spacing distance D2 between the ends facing each other between the third clearance 18 and the fourth clearance 19 can be set to be less than or equal to a preset distance, which can be equal to 1 mm. Taking the spacing distance D2 equal to 1 mm as an example, when a signal is fed into the third feed point 4 and no signal is fed into the fourth feed point 5, the third radiator 110 and the second sub-radiator 134 can be excited to generate resonance within the 5G frequency band, relative to Figure 1 In the embodiment shown, the first sub-radiator 133 and the second sub-radiator 134 can be reused simultaneously to generate a resonance scheme within the 5G frequency band, which is beneficial to improving the efficiency of the first sub-radiator 133 and the second sub-radiator 134 in radiating 5G signals after reuse. Figure 2 and Figure 4 It can be seen that in the frequency band with a center frequency of around 3.6 GHz, by reusing the second sub-radiator 134, compared with the solution of only reusing the first sub-radiator 133, the S11 parameter of the antenna structure 100 when radiating in the frequency band with a center frequency of around 3.6 GHz can be greatly improved, thereby improving the antenna efficiency.

[0053] In this embodiment, when the first feed point 2 and the third feed point 4 are fed with signals at the same time, and no signal is fed into the second feed point 3 and the fourth feed point 6, the first radiator 12, the first sub-radiator 133, the second sub-radiator 134 and the third radiator 110 can be excited to produce multiple resonances located at 3.3GHz-4.4GHz, thereby achieving wide-band coverage of the antenna structure 100 at 3.3GHz-4.4GHz, and the electronic device equipped with the antenna structure 100 achieves coverage of the N77 and N78 frequency bands.

[0054] For example, the first radiator 12, the first sub-radiator 133, the second sub-radiator 134 and the third radiator 110 can be excited to produce multiple resonances at 3.3 GHz-4.4 GHz. Figure 5 As shown, the first sub-radiator 133 can be excited to generate a resonance covering a first frequency band with a center frequency of around 3.32 GHz. At this time, the current distribution on the first sub-radiator 133 is a 1λ slot mode, on which there are two fixed zero points (i.e. Figure 5The first sub-radiator 133 and the first radiator 12 operate in different modes, and the resonance of the first frequency band with a center frequency of around 3.32 GHz is mainly generated through the first sub-radiator 133.

[0055] Similarly, if Figure 6 As shown, the first radiator 12 is excited to generate resonance covering the second frequency band with a center frequency of around 4.06 GHz. At this time, the current intensity on the first sub-radiator 133 is small, and the current distribution on the first radiator 13 is a 0.5λ ring mode to generate resonance corresponding to the second frequency band; Figure 7 As shown, the first sub-radiator 133 includes a first bending section 1331 and a second bending section 1332 connected to the first bending section 1331 by a bend. The first bending section 1331 corresponds to the end of the second clearance 16 away from the first clearance 15, and the second bending section 1332 corresponds to the end of the second clearance 16 close to the first clearance 15. The second bending section 1332 is excited to generate resonance covering a third frequency band with a center frequency of around 4.3 GHz. At this time, the current is reversed at the connection position of the first bending section 1331 and the second bending section 1332. Therefore, the first bending section 1331 and the second bending section 1332 are in different working modes. The current distribution of the second bending section 1332 is a 1λ slot mode to excite the resonance covering the third frequency band with a center frequency of around 4.3 GHz. Figure 8 As shown, the third radiator 110 and the second sub-radiator 134 can be excited to generate a current distribution mode of a 0.5λ ring mode. The electrical lengths of the third radiator 110 and the second sub-radiator 134 when excited to generate the 0.5λ ring mode are similar but not equal. Therefore, the third radiator 110 and the second sub-radiator 134 can be excited to generate two similar resonances. The two similar resonances are combined to form a resonance of a fourth frequency band with a center frequency of approximately 3.6 GHz, which can be expanded relative to the frequency band of a single third radiator 110 or a single second sub-radiator 134; as shown Figure 9 As shown, the third radiator 110 and the second sub-radiator 134 can be used as a whole radiator, which is excited to generate a current distribution mode of a 1λ ring mode, thereby generating a resonance covering the fifth frequency band with a center frequency of approximately 4.4 GHz.

[0056] In each of the above embodiments, the metal frame 1 can be arranged in a rectangular shape, with the first slit 14 located on the first long side of the metal frame 1 and the second slit 17 located on the second long side of the metal frame 1. The first long side and the second long side are arranged relative to each other. Based on the rectangular shape of the metal frame 1, it is convenient to adapt to the shape of the middle frame of many current electronic devices and realize the frame antenna of the electronic device. In the embodiments provided in the present disclosure, a single first radiator 12 and a third radiator 110 are respectively formed on the first long side and the second long side, and the second radiator 13 is formed on a short side between the first long side and the second long side, a partial area on the first long side, and a partial area on the second long side. In other embodiments, two first radiators 12 can be formed on the first long side, two third radiators can be formed on the second long side, and another second radiator 13 can be formed on the other short side between the first long side and the second long side, a partial area on the first long side, and a partial area on the second long side. The specific design can be as needed, and the present disclosure is not limited to this.

[0057] In the above embodiments, the third feeding point 4 can be directly electrically connected to the third radiator 110 to feed the signal; or, in other embodiments, such as Figure 10 As shown, the antenna structure 100 may further include a first coupling branch 7, which may include a first branch 71 and a second branch 72 perpendicularly connected to the first branch 71, the second branch 72 being parallel to the third radiator 110 and extending toward the second slit 17, and the end of the first branch 71 away from the second branch 72 being electrically connected to the third feed point 4, so that coupling and feeding can be performed between the second branch 72 and the third radiator 110 to form a 5G slot antenna structure of the third radiator 110 and the first coupling branch 7. Similarly, the first feed point 2 may be directly electrically connected to the first radiator 12, or, in other embodiments, as Figure 10 As shown, the antenna structure 100 may also include a second coupling branch 8, which may include a third branch 81 and a fourth branch 82 vertically connected to the third branch 81, the fourth branch 82 is parallel to the first radiator 12 and extends toward the first break 14, and the end of the third branch 81 away from the fourth branch 82 is electrically connected to the first feeding point 2, so that coupling and feeding can be performed between the fourth branch 82 and the first radiator 12, forming a 5G slot antenna structure of the first radiator 12 and the second coupling branch 8.

[0058] Based on the antenna structure 100 provided in the present disclosure, the present disclosure also provides an electronic device (not shown), which may include the antenna structure 100 described in any one of the above embodiments. The metal frame 1 of the antenna structure 100 can serve as the frame of the electronic device, and the first radiator 12, the second radiator 13 and the third radiator 110 can form the outer edge of the electronic device, thereby simplifying the internal structure of the electronic device.

[0059] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0060] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An antenna structure, characterized in that: include: A metal frame, the metal frame comprising a plate body, a first radiator, a second radiator, a first slit, a first clearance, and a second clearance, the first radiator and the second radiator being respectively connected to the plate body, the first clearance being located between the first radiator and the plate body, the second clearance being located between the second radiator and the plate body, the spacing between mutually facing ends of the first clearance and the second clearance being less than or equal to a preset distance, and the first slit being provided on the second radiator; a first feeding point electrically connected to the first radiator; a second feeding point electrically connected to the second radiator; When a signal is fed into the first feeding point, no signal is fed into the second feeding point, so as to stimulate the first radiator and the second radiator to generate resonance within the 5G frequency band; When a signal is fed into the second feeding point, the second radiator is stimulated to generate resonance within the 4G frequency band.

2. The antenna structure according to claim 1, wherein: The metal frame further includes a second slit, a third clearance, a fourth clearance, and a third radiator, the third radiator being connected to the plate body, the third clearance being located between the third radiator and the plate body, the fourth clearance being located between the second radiator and the plate body, the spacing between the ends of the third clearance and the fourth clearance facing each other being less than or equal to a preset distance, an end of the fourth clearance away from the third clearance and an end of the second clearance away from the first clearance being arranged opposite to each other, dividing the second radiator into a first sub-radiator and a second sub-radiator, the second feeding point being electrically connected to the first sub-radiator, the first slit being arranged on the first sub-radiator, and the second slit being arranged on the second sub-radiator; The antenna structure further includes a third feed point and a fourth feed point, the third feed point being electrically connected to the third radiator, and the fourth feed point being electrically connected to the second sub-radiator; When a signal is fed into the third feeding point, no signal is fed into the fourth feeding point, so as to stimulate the second sub-radiator and the third radiator to generate resonance within the 5G frequency band; When the fourth feeding point feeds a signal, it excites the second sub-radiator to generate resonance within the 4G frequency band, and the frequency band of the resonance generated by the second sub-radiator is different from the frequency band of the resonance generated by the first sub-radiator.

3. The antenna structure according to claim 2, characterized in that: When the fourth feeding point is fed with a signal, the second sub-radiator is stimulated to generate resonance within the frequency band of 1710 MHz to 2690 MHz; When a signal is fed into the second feeding point, the first sub-radiator is stimulated to generate resonance within a frequency band of 698 MHz to 960 MHz.

4. The antenna structure according to claim 2, characterized in that: When signals are fed into the first feeding point and the third feeding point and no signals are fed into the second feeding point and the fourth feeding point, the first radiator, the second radiator and the third radiator are excited to generate multiple resonances within the 3.3 GHz-4.4 GHz frequency band.

5. The antenna structure according to claim 4, characterized in that: The first sub-radiator is excited to generate a 1λ slot mode, generating a resonance covering a first frequency band with a center frequency around 3.32 GHz; The first radiator is excited to generate a 0.5λ ring mode to generate resonance covering a second frequency band with a center frequency of approximately 4.06 GHz; The first sub-radiator includes a first bending section and a second bending section connected to the first bending section, the first bending section corresponds to an end of the second clearance away from the first clearance, the second bending section corresponds to an end of the second clearance close to the first clearance, and the second bending section is excited to generate a 1λ slot mode to generate resonance covering a third frequency band with a center frequency near 4.3 GHz.

6. The antenna structure according to claim 4, characterized in that: The 0.5λ ring mode generated by the excitation of the third radiator and the 0.5λ ring mode generated by the excitation of the second sub-radiator cooperate to generate resonance covering a fourth frequency band with a center frequency of approximately 3.6 GHz; The 1λ ring mode generated by the excitation of the third radiator and the second sub-radiator generates resonance covering a fifth frequency band with a center frequency of approximately 4.4 GHz.

7. The antenna structure according to claim 2, characterized in that: The metal frame is arranged in a rectangular shape, the first break is located at the first long side of the metal frame, the second break is located at the second long side of the metal frame, and the first long side and the second long side are arranged opposite to each other.

8. The antenna structure according to claim 2, wherein: Also includes: A first coupling branch, wherein the first coupling branch includes a first branch and a second branch vertically connected to the first branch, the second branch is parallel to the third radiator and extends toward the second break, and an end of the first branch away from the second branch is electrically connected to the third feeding point.

9. The antenna structure according to claim 1, wherein: Also includes: The second coupling branch includes a third branch and a fourth branch vertically connected to the third branch, the fourth branch is parallel to the first radiator and extends toward the first fracture, and the end of the third branch away from the fourth branch is electrically connected to the first feeding point.

10. The antenna structure according to claim 1, characterized in that: The preset distance is equal to 1 mm.

11. An electronic device, characterized in that: The invention comprises the antenna structure according to any one of claims 1 to 10.

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