Electronic device

Abstract

The invention discloses electronic equipment, and belongs to the technical field of electronic products. The electronic equipment comprises a first folding part and a second folding part, wherein the first folding part and the second folding part are rotationally connected; the first folding part comprises a first frame body and a first antenna, the first antenna comprises a feed source and a first radiator arranged on the first frame body, and the feed source is connected with the first radiator through a first tuning circuit; the second folding part comprises a second frame body and a second antenna, the second antenna comprises a second radiating body and a third radiating body which are arranged on the second frame body, and the second radiating body and the third radiating body are coupled through a breaking joint; when the electronic equipment is in a folded state, the first radiator and the second radiator are oppositely arranged at a first interval, and the second radiator is coupled with the third radiator; a second tuning circuit is connected between the third radiator and the grounding end; the length of the breaking joint is smaller than a preset value, or a capacitive unit is arranged at the breaking joint.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic products, and specifically relates to an electronic device. Background Art

[0002] The current foldable screen electronic devices are designed to be extremely thin and light with large battery capacity, which results in an extremely compact antenna layout and increasingly smaller antenna clearance. However, the antenna clearance, antenna body thickness, and antenna tuning circuit layout space affect the antenna bandwidth and efficiency. Therefore, how to design antennas within the limited space of electronic devices and improve antenna performance is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide an electronic device that can solve the problem of how to design an antenna in a limited space and improve antenna performance.

[0004] In a first aspect, an embodiment of the present application provides an electronic device, comprising: a first folding portion and a second folding portion, wherein the first folding portion and the second folding portion are rotatably connected;

[0005] The first folding portion includes a first frame and a first antenna, the first antenna includes a feed source and a first radiator arranged on the first frame, and the feed source and the first radiator are connected through a first tuning circuit;

[0006] The second folding portion includes a second frame and a second antenna, the second antenna includes a second radiator and a third radiator arranged on the second frame, and the second radiator and the third radiator are coupled via a slit;

[0007] When the electronic device is in a folded state, the first radiator and the second radiator are arranged opposite to each other at a first interval, and the second radiator is coupled to the third radiator;

[0008] Wherein, a second tuning circuit is connected between the third radiator and the ground end;

[0009] The length of the break is smaller than a preset value, or a capacitive unit is provided at the break.

[0010] In an embodiment of the present application, the electronic device includes a first folding part and a second folding part, and the first folding part and the second folding part are rotatably connected; the first folding part includes a first frame and a first antenna, the first antenna includes a feed source and a first radiator arranged on the first frame, and the feed source and the first radiator are connected through a first tuning circuit; the second folding part includes a second frame and a second antenna, and the second antenna includes a second radiator and a third radiator arranged on the second frame, and the second radiator and the third radiator are coupled through a slit; when the electronic device is in a folded state, the first radiator and the second radiator are arranged relative to each other at a first interval, and the second radiator is coupled with the third radiator; further, by setting the length of the slit to be less than a preset value, or by setting a capacitive unit at the slit, the capacitance value at the slit can be increased, and by connecting the second tuning circuit to the third radiator, the antenna can be operated in the B5, B8, and B28 frequency bands by tuning the switches on the first tuning circuit and the second tuning circuit, and the antenna efficiency can be improved. In this way, the performance of the antenna can be improved within a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram showing the structure of an electronic device according to an embodiment of the present invention;

[0012] Figure 2 A second structural schematic diagram of an electronic device according to an embodiment of the present invention;

[0013] Figure 3 A schematic diagram showing the structure of a capacitive unit according to an embodiment of the present invention;

[0014] Figure 4 A second structural schematic diagram showing a capacitive unit according to an embodiment of the present invention;

[0015] Figure 5 A third structural schematic diagram showing a capacitive unit according to an embodiment of the present invention;

[0016] Figure 6 A schematic diagram showing the circuit structure of a first tuning circuit according to an embodiment of the present invention;

[0017] Figure 7 A second schematic diagram showing the circuit structure of the first tuning circuit according to an embodiment of the present invention;

[0018] Figure 8 A schematic diagram showing the circuit structure of a second tuning circuit according to an embodiment of the present invention;

[0019] Fig. 9 A second schematic diagram showing the circuit structure of the second tuning circuit according to an embodiment of the present invention;

[0020] Fig.10An equivalent circuit diagram showing a second antenna according to an embodiment of the present invention;

[0021] Fig.11 A schematic diagram showing the structure of an existing electronic device according to an embodiment of the present invention;

[0022] Fig.12 A schematic diagram showing antenna return loss according to an embodiment of the present invention;

[0023] Fig.13 A schematic diagram showing a comparison of antenna efficiencies according to an embodiment of the present invention;

[0024] Fig.14 The third structural schematic diagram of the electronic device according to the embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 0-feed source; 1-first frame; 11-first frame; de-first radiator; 12-second frame; 2-second frame; 21-third frame; 22-fourth frame; ab-second radiator; bc-third radiator; 3-first tuning circuit; 4-second tuning circuit; 50-capacitor; 51-first coupling structure; 52-second coupling structure; 53-third coupling structure; 54-fourth coupling structure; 55-fifth coupling structure; 56-sixth coupling structure; 6-first battery accommodating area; 7-hinge mechanism; 8-second battery accommodating area. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0029] The control method provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0030] Please refer to Figures 1 to 10, an embodiment of the present invention provides an electronic device, comprising: a first folding portion and a second folding portion, the first folding portion and the second folding portion being rotatably connected;

[0031] The first folding part includes a first frame 1 and a first antenna, the first antenna includes a feed source 0 and a first radiator de arranged on the first frame 1, and the feed source 0 and the first radiator de are connected through a first tuning circuit 3;

[0032] The second folding part includes a second frame 2 and a second antenna, the second antenna includes a second radiator ab and a third radiator bc arranged on the second frame 2, and the second radiator ab and the third radiator bc are coupled via a slit b;

[0033] When the electronic device is in a folded state, the first radiator de and the second radiator ab are arranged opposite to each other at a first interval, and the second radiator ab is coupled to the third radiator bc;

[0034] Wherein, a second tuning circuit 4 is connected between the third radiator bc and the ground end;

[0035] The length of the break b is smaller than a preset value, or a capacitive unit is provided at the break b.

[0036] Optionally, the first folding part is a main body of the electronic device, and the second folding part is a sub-body of the electronic device.

[0037] It should be noted that the feed source 0 is connected to the first radiator de through the first tuning circuit 3, and the connection position of the first tuning circuit 3 and the first radiator de is not limited. At the same time, the connection position of the second tuning circuit 4 and the third radiator bc is located between the capacitive unit and the break c, or between the break b and the break c.

[0038] It should be pointed out that Figure 1 and Figure 2 The positions of the first frame 1 and the second frame 2 in the figure are only for the convenience of illustrating the relative position relationship between the first antenna and the second antenna, and are not actual product structure diagrams. In actual product structure diagrams, when the electronic device is in a folded state, the first folding portion overlaps with the second folding portion, and the first antenna and the second antenna are close to each other; Fig.14 As shown, when the electronic device is in the unfolded state, the first antenna and the second antenna are far away from each other.

[0039] Optionally, in an application example in which the coupling capacitance at the break b is increased by reducing the width of the break b, the preset value is less than 0.8 mm, that is, the length of the break b should be less than 0.8 mm.

[0040] In this embodiment, by setting the length of the break b to be less than a preset value, or by setting a capacitive unit at the break b, the capacitance value at the break b can be increased, and the second tuning circuit 4 is connected to the third radiator bc, so that by tuning the switches on the first tuning circuit 3 and the second tuning circuit 4, the antenna works in the B5, B8 or B28 frequency band, and the antenna efficiency is improved. In this way, the performance of the antenna can be improved within a limited space.

[0041] In specific implementation, the antenna feed is the location of the feed source 0 in the figure. By tuning the inductance and capacitance on the first tuning circuit 3, the low-frequency (Low Band, LB) resonance of the first folded part, that is, the 700-960MHz frequency band, can be effectively excited. The resonance is radiated by the first radiator de; when the electronic device is in the folded state, the positions of the second radiator ab and the first radiator de overlap, that is, the second radiator ab and the first radiator de are arranged parallel and opposite to each other at a first interval, and the magnetic field of the first radiator de is coupled to the second radiator ab. Through the inductance and capacitance on the second tuning circuit 4, the second radiator ab generates a low-frequency LB resonance, that is, the 700-960MHz frequency band. In this way, by tuning the switches on the first tuning circuit 3 and the second tuning circuit 4, the resonance of the first antenna and the second antenna can be simultaneously in the B5, B8 or B28 frequency band.

[0042] like Fig.12 As shown, it is a schematic diagram of antenna return loss corresponding to the electronic device provided in the embodiment of the present application. Fig.13 As shown, it shows a schematic diagram comparing the antenna efficiency of the electronic device provided by the embodiment of the present application with that of the traditional solution. Among them, from left to right in the figure, the solid line represents the antenna efficiency of B28, B5 and B8 of the traditional antenna solution, and the dotted line represents the antenna efficiency of B28, B5 and B8 of the embodiment of the present application. It can be seen from the comparison diagram that the efficiency bandwidth of the embodiment of the present application in the B5, B8 and B28 frequency bands is significantly higher than that of the traditional solution, and the efficiency is improved by 1-1.5dB.

[0043] like Fig.11 As shown, it is a schematic diagram of the structure of the traditional solution. Fig.11 It can be seen that the conventional solution does not have a structural design to increase the coupling capacitance at the fracture b, and the second tuning circuit 4 is connected to the second radiator ab.

[0044] Optionally, the first tuning circuit 3 is a Q-SPST circuit topology structure, including four single-pole single-throw switches. Figure 6As shown, the first tuning circuit 3 includes: a second capacitor C2 connected between the feed source 0 and the first radiator de, a first inductor L1 connected between the first radiator de and the ground terminal, a first module connected in parallel with the first inductor L1, and the first module includes a first sub-branch, a second sub-branch, a third sub-branch and a fourth sub-branch connected in parallel; wherein the first sub-branch includes a first single-pole single-throw switch and a second inductor L2 connected in series, the second sub-branch includes a second single-pole single-throw switch and a third inductor L3 connected in series, the third sub-branch includes a third single-pole single-throw switch and a fourth inductor L4 connected in series, and the fourth sub-branch includes a fourth single-pole single-throw switch and the first capacitor C1.

[0045] Optionally, the first tuning circuit is a SP4T circuit topology. Specifically, Figure 7 As shown, the first tuning circuit 3 includes: a second capacitor C2 connected between the feed source 0 and the first radiator de, a first inductor L1 connected between the first radiator de and the ground terminal, a second module connected in parallel with the first inductor L1, an input end of the second module is connected between the first radiator de and the second capacitor C2, and the input end of the second module is respectively connected to a first single-pole single-throw switch, a second single-pole single-throw switch, a third single-pole single-throw switch and a fourth single-pole single-throw switch; wherein, the second inductor L2 is connected between the first single-pole single-throw switch and the ground terminal, the third inductor L3 is connected between the second single-pole single-throw switch and the ground terminal, the fourth inductor L4 is connected between the third single-pole single-throw switch and the ground terminal, and the first capacitor C1 is connected between the fourth single-pole single-throw switch and the ground terminal.

[0046] Optionally, the second tuning circuit 4 is a Q-SPST circuit topology structure. Figure 8 As shown, the second tuning circuit 4 includes: a fifth inductor L5 connected between the third radiator bc and the ground terminal, a third module connected between the third radiator bc and the ground terminal, and the third module includes: a fifth sub-branch, a sixth sub-branch, a seventh sub-branch and an eighth sub-branch connected in parallel; wherein the fifth sub-branch includes a first single-pole single-throw switch and a sixth inductor L6 connected in series, the sixth sub-branch includes a second single-pole single-throw switch and a third capacitor C3 connected in series, the seventh sub-branch includes a third single-pole single-throw switch and a fourth capacitor C4 connected in series, and the eighth sub-branch includes a fourth single-pole single-throw switch and a fifth capacitor C5.

[0047] Optionally, the second tuning circuit 4 is a SP4T circuit topology. Fig. 9As shown, the second tuning circuit 4 includes: a fifth inductor L5 connected between the third radiator bc and the ground terminal, a fourth module connected between the third radiator bc and the ground terminal, the input end of the fourth module is connected between the third radiator bc and the fifth inductor L5, and the input end of the fourth module is respectively connected to the first single-pole single-throw switch, the second single-pole single-throw switch, the third single-pole single-throw switch and the fourth single-pole single-throw switch; wherein, the sixth inductor L6 is connected between the first single-pole single-throw switch and the ground terminal, the third capacitor C3 is connected between the second single-pole single-throw switch and the ground terminal, the fourth capacitor C4 is connected between the third single-pole single-throw switch and the ground terminal, and the fifth capacitor C5 is connected between the fourth single-pole single-throw switch and the ground terminal.

[0048] based on Figures 6 to 9 The schematic diagram of the first tuning circuit and the second tuning circuit shown, the tuning principle of the second radiator ab is as follows:

[0049] like Fig.10 In the example, the path from the second radiator ab to the ground can be equivalent to a series LC circuit, that is, the capacitor C formed at the break b + the equivalent inductance L corresponding to the third radiator bc + the L or C of the second tuning circuit 4, connected in series to the ground. The LC circuit is equivalent to a capacitor C at low frequency LB. b8 , C b5 or C b28 , where C b8 <C b5 <C b28 According to the aperture tuning principle, by performing aperture tuning on the loading capacitor C of the second radiator ab, when the equivalent capacitance increases, the resonance shifts to a low frequency. Specifically:

[0050] (1) When all switches in the second tuning circuit 4 are turned on, the equivalent circuit is Coff+L+C connected in series to ground. At low frequency, the equivalent capacitance is C b8 , the antenna resonates in the B8 frequency band. Where Coff is the blocking capacitance value.

[0051] (2) When the second tuning circuit 4 is turned on at least one RF pin connected to the capacitor, the equivalent circuit at this time is C RfC +L+C is connected in series to the ground, and the equivalent capacitance is C at low frequency b5 , the antenna resonates in the B5 frequency band. Among them, C RfC is the capacitance value corresponding to the second tuning circuit 4.

[0052] (3) When the RF pin connected to the inductor in the second tuning circuit 4 is turned on, the equivalent circuit at this time is L RFL +L5+C3 is connected in series to the ground, and the equivalent capacitance is C at low frequency. b28 , the antenna resonates in the B28 frequency band. Among them, L RFL is the inductance value corresponding to the second tuning circuit 4.

[0053] In some optional embodiments, such as Figure 1 As shown, the capacitive unit is a capacitor 50, and two ends of the capacitor 50 are respectively connected to the second radiator ab and the third radiator bc.

[0054] In a specific implementation, a capacitor 50 is connected in series on a flexible printed circuit board (PCB), so that two ends of the PCB circuit are respectively connected to the second radiator ab and the third radiator bc.

[0055] It should be pointed out that in the existing antenna scheme, the length of the break b between the second radiator ab and the third radiator bc is 0.8 to 1.2 mm, and the coupling capacitance at the break b is relatively small. The embodiment of the present application can achieve the purpose of increasing the capacitance value at the break b by connecting a capacitor 50 in parallel at the break b, and further cooperate with the first tuning circuit 3 and the second tuning circuit 4 to achieve the effect of improving the antenna efficiency.

[0056] In some optional embodiments, the capacitive unit includes:

[0057] A first coupling structure 51, which is disposed on the inner side of the second frame 2 and on the second radiator ab;

[0058] Part of the first coupling structure 51 is arranged opposite to the third radiator bc at a second interval.

[0059] For example, Figure 3 As shown, in order to increase the capacitance value at the break b, an L-shaped metal piece is fixedly connected to the second radiator ab, so that the short side of the L-shaped metal piece is fixedly connected to the second radiator ab, and the long side of the L-shaped metal piece is parallel to and opposite to the third radiator bc at a second interval. In this way, Figure 3 The area framed by the dotted line is the coupling area formed between the second radiator ab and the third radiator bc. By increasing the coupling area, the coupling capacitance value at the break b can be effectively increased.

[0060] In some optional embodiments, the capacitive unit includes:

[0061] A second coupling structure 52, which is disposed on the inner side of the second frame 2 and on the third radiator bc;

[0062] Part of the second coupling structure 52 is disposed opposite to the second radiator ab at a third interval.

[0063] For example, Figure 2 and Figure 4As shown, in order to increase the capacitance value at the break b, an L-shaped metal piece is fixedly connected to the third radiator bc as the second coupling structure 52, so that the short side of the L-shaped metal piece is fixedly connected to the third radiator bc, and the long side of the L-shaped metal piece is parallel to and opposite to the second radiator ab at a second interval. In this way, Figure 4 The area encircled by the dotted circle is the coupling area formed between the second radiator ab and the third radiator bc. By increasing the coupling area, the coupling capacitance value at the break b can be effectively increased.

[0064] Alternatively, if Figure 2 As shown, in order to further increase the capacitance value at the break b, a sixth coupling structure 56 is further provided on the second radiator ab, and the sixth coupling structure 56 is opposite to the short side of the L-shaped metal piece.

[0065] It should be pointed out that in the specific implementation, in order to increase the coupling capacitance at the fracture b, Figure 2 The capacitive unit set at the interruption seam b can also be replaced by Figure 3 or Figure 5 structural design, or reduce the width of the fracture b.

[0066] In some optional embodiments, the capacitive unit includes: a third coupling structure 53, a fourth coupling structure 54 and a fifth coupling structure 55 arranged on the inner side of the second frame 2;

[0067] The third coupling structure 53 is disposed on the second radiator ab, the fourth coupling structure 54 is disposed on the third radiator bc, and the fifth coupling structure 55 is disposed opposite to the third coupling structure 53 and the fourth coupling structure 54 at a fourth interval.

[0068] For example, Figure 5 As shown, the fifth coupling structure 55 is a suspended metal sheet, the third coupling structure 53 is a first metal sheet fixed on the second radiator ab, and the fourth coupling structure 54 is a second metal sheet fixed on the third radiator bc. The suspended metal sheet is parallel to the first metal sheet and the second metal sheet and is spaced apart. In this structural design, Figure 5 The area enclosed by the dotted circle is the coupling area formed between the second radiator ab and the third radiator bc. By increasing the coupling area, the coupling capacitance value at the break b can be effectively increased.

[0069] In some optional embodiments, the second folding portion includes a first battery receiving area 6 , and the second tuning circuit 4 is disposed outside the first battery receiving area 6 .

[0070] like Figure 1 and Figure 2 As shown, by connecting the second tuning circuit 4 to the third radiator bc, Fig.11Compared with the scheme in which the second tuning circuit 4 is connected to the second radiator ab, by changing the tuning position of the second antenna from the second radiator ab to the third radiator bc, on the one hand, the second tuning circuit 4 can be set outside the first battery accommodating area 6 to avoid the second tuning circuit 4 occupying the battery storage space; on the other hand, by setting the length of the break b to be less than the preset value, or setting a capacitive unit at the break b, the radiation efficiency of the antenna can be optimized and improved, and the performance of the antenna and the battery capacity can be improved within a limited space.

[0071] Alternatively, if Figure 1 and Figure 2 In the embodiment, the first folding portion further includes a second battery accommodating area 8, and the first tuning circuit 3 is arranged outside the second battery accommodating area 8 to avoid occupying the storage space of the battery.

[0072] In some optional embodiments, the first frame 1 includes a first frame 11 and a second frame 12 that are arranged opposite to each other. The first frame 11 is fixedly connected to the second frame 2 via a hinge mechanism 7 . The first radiator de is a first resonant arm arranged on the second frame 12 .

[0073] The second frame 2 includes a third frame 21 and a fourth frame 22 which are arranged opposite to each other. The third frame 21 is fixedly connected to the first frame 1 via a hinge mechanism 7. The second radiator ab and the third radiator bc are a second resonant arm and a third resonant arm which are arranged at intervals on the fourth frame 22 .

[0074] The first resonant arm is a metal resonant arm; the second resonant arm and the third resonant arm are two sections of metal resonant arms arranged at intervals.

[0075] For example, in a specific implementation, the first frame 11 on the first frame body 1 is rotatably connected to the third frame 21 on the second frame body 2 through the hinge mechanism 7. Fig.14 In the unfolded state shown, the first radiator de is far away from the second radiator ab and the third radiator bc; when the electronic device is in the folded state, the first folded part overlaps with the second folded part, the first radiator de and the second radiator ab are arranged opposite to each other at a first interval, and the second radiator ab is coupled with the third radiator bc.

[0076] In some optional embodiments, the lengths of the first radiator de and the second radiator ab are equal.

[0077] Optionally, the length of the first radiator de and the second radiator ab is 36 mm, or 33 mm, or 39 mm, etc. Since the antenna design is different from the digital circuit and does not have the typical digital circuit characteristics, other length dimensions can also achieve the same antenna efficiency through matching optimization. Therefore, this size is only an example and is not limited to this.

[0078] In some optional embodiments, the length of the third radiator bc is smaller than the length of the second radiator ab.

[0079] Optionally, the length of the second radiator ab is 36 mm, and the length of the third radiator bc is 25 mm.

[0080] It should be noted that since the antenna design is different from the digital circuit and does not have typical digital circuit characteristics, other length dimensions can also achieve the same antenna efficiency through matching optimization. Therefore, this dimension is only an example and is not limited to this.

[0081] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0082] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0083] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electronic device, characterized in that: include: a first folding portion and a second folding portion, wherein the first folding portion and the second folding portion are rotatably connected to each other; The first folding portion includes a first frame and a first antenna, the first antenna includes a feed source and a first radiator arranged on the first frame, and the feed source and the first radiator are connected through a first tuning circuit; The second folding portion includes a second frame and a second antenna, the second antenna includes a second radiator and a third radiator arranged on the second frame, and the second radiator and the third radiator are coupled via a slit; When the electronic device is in a folded state, the first radiator and the second radiator are arranged opposite to each other at a first interval, and the second radiator is coupled to the third radiator; Wherein, a second tuning circuit is connected between the third radiator and the ground end; The length of the break is smaller than a preset value, or a capacitive unit is provided at the break.

2. The electronic device according to claim 1, characterized in that: The capacitive unit is a capacitor, and two ends of the capacitor are respectively connected to the second radiator and the third radiator.

3. The electronic device according to claim 1, characterized in that: The capacitive unit comprises: A first coupling structure, the first coupling structure is arranged on the inner side of the second frame body, and the first coupling structure is arranged on the second radiator; Wherein, a partial structure of the first coupling structure is arranged opposite to the third radiator at a second interval.

4. The electronic device according to claim 1, characterized in that: The capacitive unit comprises: A second coupling structure, the second coupling structure is arranged on the inner side of the second frame body, and the second coupling structure is arranged on the third radiator; Part of the second coupling structure is arranged opposite to the second radiator at a third interval.

5. The electronic device according to claim 1, characterized in that: The capacitive unit includes: a third coupling structure, a fourth coupling structure and a fifth coupling structure arranged on the inner side of the second frame; The third coupling structure is arranged on the second radiator, the fourth coupling structure is arranged on the third radiator, and the fifth coupling structure is arranged opposite to the third coupling structure and the fourth coupling structure at a fourth interval.

6. The electronic device according to claim 1, characterized in that: The second folding portion includes a first battery receiving area, and the second tuning circuit is arranged outside the first battery receiving area.

7. The electronic device according to claim 1, characterized in that: The first frame includes a first frame and a second frame that are arranged opposite to each other. The first frame is fixedly connected to the second frame through a hinge mechanism. The first radiator is a first resonant arm arranged on the second frame.

8. The electronic device according to claim 1, characterized in that: The second frame includes a third frame and a fourth frame that are arranged opposite to each other. The third frame is fixedly connected to the first frame through a hinge mechanism. The second radiator and the third radiator are a second resonant arm and a third resonant arm that are arranged at intervals on the fourth frame.

9. The electronic device according to claim 1, characterized in that: The first radiator and the second radiator have the same length.

10. The electronic device according to claim 1, characterized in that: The length of the third radiator is smaller than that of the second radiator.

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