Electronic device

Abstract

The present application provides an electronic device, including a first antenna, where the first antenna includes a first grounding portion, and the first antenna is grounded through the first grounding portion; a second antenna, where the second antenna includes a second grounding portion, and the second antenna is grounded through the second grounding portion; wherein, a first gap is provided between the first grounding portion and the second grounding portion, and the first grounding portion and the second grounding portion are coupled. In the embodiment of the present application, the current directions of the first grounding portion and the second grounding portion can be opposite, so that the first antenna and the second antenna form a differential-mode resonance, improving the range of the resonance frequency corresponding to the antenna and improving the radiation efficiency of the first antenna and the second antenna.

Description

Technical Field

[0001] This application belongs to the technical field of antennas, and particularly relates to an electronic device. Background Art

[0002] With the continuous development of communication technologies, the antenna structures of mobile terminals have become increasingly complex, and the requirements for antenna performance have also become higher. Considering the demand for the appearance of mobile terminals, using a metal frame as an antenna is a common design in the prior art.

[0003] By setting two slits on the metal frame, some branches of the metal frame can be disconnected and used as an antenna. However, the range of the resonant frequency corresponding to this section of the antenna is small, resulting in low radiation efficiency of the antenna. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide an electronic device that can solve the technical problem that the range of the resonant frequency corresponding to the antenna is small, resulting in low radiation efficiency of the antenna.

[0005] The embodiments of this application provide an electronic device, including:

[0006] A first antenna, the first antenna includes a first grounding portion, and the first antenna is grounded through the first grounding portion;

[0007] A second antenna, the second antenna includes a second grounding portion, and the second antenna is grounded through the second grounding portion;

[0008] Wherein, a first gap is provided between the first grounding portion and the second grounding portion, and the first grounding portion and the second grounding portion are coupled.

[0009] Optionally, the electrical length of the first antenna is different from the electrical length of the second antenna.

[0010] Optionally, the resonant frequency of the first antenna is a first resonant frequency, the resonant frequency of the second antenna is a second resonant frequency, and the first resonant frequency and the second resonant frequency are different.

[0011] Optionally, when the operating frequency of the first antenna and the second antenna is a third resonant frequency, the current direction of the first grounding portion is opposite to the current direction of the second grounding portion; the third resonant frequency is between the first resonant frequency and the second resonant frequency.

[0012] Optionally, the third resonant frequency f3 satisfies:

[0013]

[0014] Wherein, f1 is the first resonance frequency, and f2 is the second resonance frequency.

[0015] Optionally, the target antenna is the first antenna and / or the second antenna, and the target antenna is loaded with a switch module for adjusting the resonance frequency of the target antenna.

[0016] Optionally, the switch module includes at least one adjustment branch, and the adjustment branch includes a switch and an adjustment component connected to each other. One end of the switch away from the adjustment component is connected to the target antenna, and one end of the adjustment component away from the switch is grounded. The adjustment component is a capacitor or an inductor.

[0017] Optionally, the electronic device further includes a housing body. The housing body, the first antenna, and the second antenna form a housing in combination. A first gap is provided between the first ends of the first antenna and the second antenna, a second gap is provided between the second end of the first antenna and the housing body, and a third gap is provided between the second end of the second antenna and the housing body.

[0018] The first grounding portion is located at the first end of the first antenna, and the second grounding portion is located at the first end of the second antenna.

[0019] Optionally, a first gap is provided between the first ends of the first antenna and the second antenna. The second end of the first antenna extends away from the second antenna, and the second end of the second antenna extends away from the first antenna.

[0020] The first grounding portion is located at the first end of the first antenna, and the second grounding portion is located at the first end of the second antenna.

[0021] Optionally, the electrical length L1 of the first antenna satisfies:

[0022]

[0023] The electrical length L2 of the second antenna satisfies:

[0024]

[0025] Wherein, R1 and R2 are odd numbers, λ is the wavelength corresponding to the center frequency, and the center frequency is the center point frequency of the operating frequency band corresponding to the first antenna and the second antenna.

[0026] In an embodiment of the present application, the electronic device includes a first antenna and a second antenna. The first antenna includes a first grounding portion, and the first antenna is grounded through the first grounding portion; the second antenna includes a second grounding portion, and the second antenna is grounded through the second grounding portion; a first gap is provided between the first grounding portion and the second grounding portion, and the first grounding portion and the second grounding portion are coupled. On the one hand, since a first gap is provided between the first grounding portion and the second grounding portion, the probability that the current directions between the first grounding portion and the second grounding portion are opposite is increased, the frequency range corresponding to the situation where the current directions between the first grounding portion and the second grounding portion are opposite is increased, and the radiation efficiency of the first antenna and the second antenna is improved. On the other hand, the radiation efficiency of the first antenna and the second antenna can be improved by coupling the first grounding portion and the second grounding portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is one of the schematic structural diagrams of the electronic device provided by the embodiment of the present application;

[0028] Figure 2 is the schematic structural diagram of the switch module provided by the embodiment of the present application;

[0029] Figure 3 is the second schematic structural diagram of the electronic device provided by the embodiment of the present application;

[0030] Figure 4 is the schematic structural diagram of an electronic device in a related art.

[0031] Figure 5 is Figure 1 the current amplitude bubble diagram of the electronic device shown near the third resonance frequency;

[0032] Figure 6 is Figure 4 the current amplitude bubble diagram of the electronic device shown near the third resonance frequency;

[0033] Figure 7 is Figure 1 the current vector diagram of the electronic device shown near the third resonance frequency;

[0034] Figure 8 is Figure 4 the current vector diagram of the electronic device shown near the third resonance frequency;

[0035] Figure 9 is Figure 1 the ground current diagram of the electronic device shown near the third resonance frequency;

[0036] Figure 10 is Figure 4 the ground current diagram of the electronic device shown near the third resonance frequency;

[0037] Figure 11 It is the S11 and efficiency curve graphs of each frequency band of the electronic device provided in this embodiment after actual matching optimization. Specific implementation manners

[0038] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0039] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means that the related objects before and after are in an "or" relationship.

[0040] Please refer to Figures 1-3 . As Figure 1 shown, the electronic device includes: a first antenna 10, the first antenna 10 includes a first grounding portion 101, and the first antenna 10 is grounded through the first grounding portion 101; a second antenna 20, the second antenna 20 includes a second grounding portion 201, and the second antenna 20 is grounded through the second grounding portion 201; wherein, a first gap is provided between the first grounding portion 101 and the second grounding portion 201, and the first grounding portion 101 and the second grounding portion 201 are coupled.

[0041] In the embodiments of the present application, the first antenna 10 and the second antenna 20 are not directly connected. Exemplarily, in some embodiments, both the first grounding portion 101 and the second grounding portion 201 are grounded by connecting to the main ground.

[0042] The specific setting positions of the first antenna 10 and the second antenna 20 are not limited herein. Exemplarily, as Figure 1 shown, in some embodiments, the first antenna 10 and the second antenna 20 are disposed near the bottom of the electronic device, and the first grounding portion 101 and the second grounding portion 20 are located at the corners of the electronic device.

[0043] In an embodiment of the present application, the electronic device includes a first antenna 10 and a second antenna 20. The first antenna 10 includes a first grounding portion 101, and the first antenna 10 is grounded through the first grounding portion 101; the second antenna 20 includes a second grounding portion 201, and the second antenna 20 is grounded through the second grounding portion 201; a first gap is provided between the first grounding portion 101 and the second grounding portion 201, and the first grounding portion 101 and the second grounding portion 201 are coupled. On the one hand, since a first gap is provided between the first grounding portion 101 and the second grounding portion 201, the probability that the current directions between the first grounding portion 101 and the second grounding portion 201 are opposite is increased, the frequency range corresponding to the situation where the current directions between the first grounding portion 101 and the second grounding portion 201 are opposite is increased, and the radiation efficiency of the first antenna 10 and the second antenna 20 is improved. On the other hand, the radiation efficiency of the first antenna 10 and the second antenna 20 can be improved by the coupling between the first grounding portion 101 and the second grounding portion 201.

[0044] Optionally, in some embodiments, the electrical length of the first antenna 10 is different from the electrical length of the second antenna 20. Since the electrical length of the first antenna 10 is different from the electrical length of the second antenna 20, it is convenient to control the resonance frequency of the first antenna 10 to be different from the resonance frequency of the second antenna 20, so that the number of resonance frequencies is two, and the radiation efficiency of the first antenna 10 and the second antenna 20 is improved.

[0045] Optionally, in some embodiments, the resonance frequency of the first antenna 10 is a first resonance frequency, the resonance frequency of the second antenna 20 is a second resonance frequency, and the first resonance frequency is different from the second resonance frequency.

[0046] In this embodiment, the resonance frequency of the first antenna 10 is different from the resonance frequency of the second antenna 20. At the first resonance frequency, the first antenna 10 resonates and has a relatively high radiation efficiency. At the second resonance frequency, the second antenna 20 resonates and has a relatively high radiation efficiency. Thus, the antenna radiation efficiency of the electronic device is relatively high at two different frequencies. The first antenna 10 and the second antenna 20 form a dual-resonance antenna system, and the radiation efficiency of the first antenna 10 and the second antenna 20 is improved.

[0047] It should be noted that the first resonance frequency is different from the second resonance frequency, and both the first resonance frequency and the second resonance frequency are within the same operating frequency band. Exemplarily, the first resonance frequency is located in the first half of the operating frequency band, and the second resonance frequency is located in the second half of the operating frequency band.

[0048] Optionally, when the operating frequencies of the first antenna 10 and the second antenna 20 are the third resonance frequency, the current direction of the first grounding portion 101 is opposite to that of the second grounding portion 201; the third resonance frequency is between the first resonance frequency and the second resonance frequency.

[0049] It should be understood that at the third resonance frequency, the current direction of the first grounding portion 101 is opposite to that of the second grounding portion 201. At the third resonance frequency, the first antenna 10 and the second antenna 20 form a differential-mode resonance. Or rather, at the third resonance frequency, the first antenna 10 and the second antenna 20 resonate as a whole.

[0050] Through the above arrangement, the first antenna 10 and / or the second antenna 20 resonate at the first resonance frequency, the second resonance frequency, and the third resonance frequency, expanding the range of the resonance frequencies corresponding to the electronic device and improving the radiation efficiency of the first antenna 10 and the second antenna 20.

[0051] Optionally, in some embodiments, the third resonance frequency f3 satisfies:

[0052]

[0053] where f1 is the first resonance frequency and f2 is the second resonance frequency. In specific implementation, within a certain range centered on the third resonance frequency, the first antenna 10 and the second antenna 20 can both form differential-mode resonances. As the absolute value of the operating frequency and the third resonance frequency increases, the intensity of the differential-mode resonance gradually weakens.

[0054] In the embodiments of the present application, the first antenna 10 and the second antenna 20 form differential-mode resonances near the center frequency points of the first resonance frequency and the second resonance frequency. Through the above arrangement, the range of frequencies at which the first antenna 10 and the second antenna 20 can form differential-mode resonances is increased, and the radiation efficiency of the first antenna 10 and the second antenna 20 is improved.

[0055] Optionally, in some embodiments, the target antenna is the first antenna 10 and / or the second antenna 20, and the target antenna is loaded with a switch module 30, and the switch module 30 is used to adjust the resonance frequency of the target antenna.

[0056] In some embodiments, the switch module 30 is loaded onto the target antenna as a load, so as to adjust the resonance frequency of the target antenna through the switch module 30. In specific implementation, the loading position of the switch module 30 can be any position of the target antenna.

[0057] In the first case, only the first antenna 10 is loaded with the switch module 30. In the second case, only the second antenna 20 is loaded with the switch module 30. In the third case, both the first antenna 10 and the second antenna 20 are loaded with the switch module 30. In this case, the structures of the switch modules 30 loaded on the first antenna 10 and the second antenna 20 may be the same or different.

[0058] In the embodiments of the present application, the switch module 30 is loaded on the target antenna. By setting the switch module 30, the resonant frequency of the target antenna can be adjusted, so that the target antenna can adapt to different frequency bands and have different resonant frequencies, improving the flexibility of the target antenna setting.

[0059] It should be understood that the structure of the switch module 30 is not limited herein. Optionally, in some embodiments, the switch module 30 includes at least one adjustment branch, and the adjustment branch includes a switch 301 and an adjustment member 302 connected in series. One end of the switch 301 away from the adjustment member 302 is connected to the target antenna, and one end of the adjustment member 302 away from the switch 301 is grounded. The adjustment member 302 is a capacitor or an inductor.

[0060] It should be understood that the specific structure of the switch 301 is not limited herein. For example, in some embodiments, each adjustment branch includes an independent switch 301, and the state of the switch 301 of each adjustment branch can be controlled separately, so that the switch 301 is in a conducting state or a cutoff state, and further the state of the adjustment branch is controlled to be in a conducting state or a cutoff state.

[0061] In some other embodiments, the switch module 30 may include a switching switch. The switching switch includes a fixed end and at least one movable end. The fixed end is connected to the target antenna, and each movable end serves as the switch 301 of an adjustment branch. By switching the movable end connected to the fixed end, the adjustment branch can be controlled to be in a conducting state or a cutoff state.

[0062] The switching method of the state of the switch 301 is not limited herein. Exemplarily, the state of the switch 301 of each adjustment branch can be switched manually, or the state of the switch 301 of each adjustment branch can be controlled by a signal of a control circuit or a chip.

[0063] In this embodiment, by controlling the state of each adjustment branch in at least one adjustment branch to be in a conducting state or a cutoff state, the resonant frequency of the target antenna can be adjusted. The number of adjustment branches included in the switch module 30 is not limited herein. In specific implementation, the more the number of adjustment branches, the more the number of resonant frequencies corresponding to the target antenna of the switch module 30.

[0064] When the number of adjustment branches is multiple, at least two adjustment branches can be made conductive simultaneously, so that at least two adjustment elements 302 form a parallel relationship, further increasing the number of resonant frequencies corresponding to the target antenna.

[0065] For ease of understanding, an example will be given below. Please refer to Figure 2 , the switch module 30 includes 3 adjustment branches. Among them, the sizes of C1 and C2 are different and can be set or adjusted according to actual needs, and the size of L can also be set or adjusted according to actual needs.

[0066] Exemplarily, when K1, K2, and K3 are all in the off state, the 3 adjustment branches are all in the off state (equivalent to the target antenna not being loaded with the switch module 30), and the resonant frequency corresponding to the target antenna is f 1 .

[0067] When K1 is in the on state and K2 and K3 are in the off state, the resonant frequency corresponding to the target antenna is f 2 . When K2 is in the on state and K1 and K3 are in the off state, the resonant frequency corresponding to the target antenna is f 3 . When K3 is in the on state and K1 and K2 are in the off state, the resonant frequency corresponding to the target antenna is f 4 . When K2 and K3 are in the on state and K1 is in the off state, C1 and C2 are equivalent to being connected in parallel, and the resonant frequency corresponding to the target antenna is f 5 .

[0068] The above is only an example of the possible states of the switch module 30. As can be seen from the above, by increasing the number of adjustment branches, the number of resonant frequencies corresponding to the target antenna is increased, so that the target antenna can adapt to different frequency bands.

[0069] In the embodiment of the present application, the switch module 30 includes at least one adjustment branch. The adjustment branch includes a switch 301 and an adjustment element 302 connected in series. One end of the switch 301 away from the adjustment element 302 is connected to the target antenna, and one end of the adjustment element 302 away from the switch 301 is grounded. The adjustment element 302 is a capacitor or an inductor. By setting the number of adjustment branches and controlling the state of each adjustment branch, the resonant frequency of the target antenna can be quickly adjusted, so that the target antenna can adapt to different frequency bands.

[0070] Optionally, in some embodiments, the electronic device further includes a housing body 40. The housing body 40, the first antenna 10, and the second antenna 20 are combined to form a housing. A first gap is provided between the first ends of the first antenna 10 and the second antenna 20, a second gap is provided between the second end of the first antenna 10 and the housing body 40, and a third gap is provided between the second end of the second antenna 20 and the housing body 40.

[0071] The first grounding portion 101 is located at the first end of the first antenna 10, and the second grounding portion 201 is located at the first end of the second antenna 20.

[0072] Please refer to Figure 1 . In this embodiment, the first gap is provided between the first ends of the first antenna 10 and the second antenna 20, so that the first antenna 10 and the second antenna 20 are separated by the first gap and are not directly connected. The first grounding portion 101 and the second grounding portion 201 are close to each other and coupled, increasing the radiation efficiency of the first antenna 10 and the second antenna 20.

[0073] In this embodiment, the housing can be a segmented housing. Specifically, the housing body 40, the first antenna 10, and the second antenna 20 are combined to form a three-segment housing.

[0074] Exemplarily, in some embodiments, the first antenna 10 and the second antenna 20 are part of the metal housing of the electronic device. Through the settings of the second gap and the third gap, both the first antenna 10 and the second antenna 20 are open at one end and grounded at the other end.

[0075] Exemplarily, in some embodiments, a layer of plastic can be provided outside the housing to cover the first gap, the second gap, and the third gap, improving the aesthetics of the electronic device.

[0076] Optionally, in some embodiments, the first gap is provided between the first ends of the first antenna 10 and the second antenna 20, the second end of the first antenna 10 extends away from the second antenna 20, and the second end of the second antenna 20 extends away from the first antenna 10.

[0077] The first grounding portion 101 is located at the first end of the first antenna 10, and the second grounding portion 201 is located at the first end of the second antenna 20.

[0078] Please refer to Figure 3。In this embodiment, a first gap is provided at the first ends of the first antenna 10 and the second antenna 20, so that the first antenna 10 and the second antenna 20 are not directly connected. The first grounding portion 101 and the second grounding portion 201 are close to each other and coupled. The second ends of the first antenna 10 and the second antenna 20 are pulled apart from each other (for example, extended to both sides or extended outward at a certain angle), increasing the radiation efficiency of the first antenna 10 and the second antenna 20.

[0079] It should be understood that the specific type of the first antenna 10 is not limited herein. For example, in some embodiments, the first antenna 10 is an antenna of the Flexible Printed Circuit (FPC) type. In some other embodiments, the first antenna 10 is an antenna of the Liquid Crystal Polymer (LCP) type. In some other embodiments, the first antenna 10 is an antenna of the Laser Direct structuring (LDS) type or a Print Direct Structuring (PDS) type antenna.

[0080] It should be understood that the specific type of the second antenna 20 is not limited herein. For example, in some embodiments, the second antenna 20 is an antenna of the FPC type. In some other embodiments, the second antenna 20 is an antenna of the LCP type. In some other embodiments, the second antenna 20 is an antenna of the LDS type or a PDS type antenna.

[0081] Optionally, in some embodiments, the electrical length L1 of the first antenna 10 satisfies:

[0082]

[0083] The electrical length L2 of the second antenna 20 satisfies:

[0084]

[0085] Wherein, R1 and R2 are odd numbers, λ is the wavelength corresponding to the center frequency, and the center frequency is the center point frequency of the operating frequency band corresponding to the first antenna 10 and the second antenna 20.

[0086] It should be understood that R1 and R2 are any odd numbers, and R1 and R2 can be the same or different. In this embodiment, the electrical length of the first antenna 10 is an odd multiple of 1 / 4 wavelength of its operating frequency band, and the electrical length of the second antenna 20 is an odd multiple of 1 / 4 wavelength of its operating frequency band, improving the radiation efficiency of the first antenna 10 and the second antenna 20.

[0087] For ease of understanding, a specific embodiment will be described below as an example. In this embodiment, the operating frequency band is B8. Here, B8 is a frequency band defined and divided in a communication network of related technologies, which will not be elaborated here.

[0088] By adjusting the length of the first antenna 10 and / or the loading switch module 30, and adjusting the length of the second antenna 20 and / or the loading switch module 30, the resonance frequency f1 generated by the first antenna 10 can be 0.88 GHz, and the resonance frequency f2 generated by the second antenna 20 can be 0.96 GHz.

[0089] The third frequency f3 satisfies:

[0090]

[0091] As can be seen from the above, the third resonance frequency is 0.92 GHz. In the frequency range centered on the third resonance frequency, the current directions of the first grounding portion 101 and the second grounding portion 201 are opposite. At this time, the first antenna 10 and the second antenna 20 form a differential-mode resonance near the third resonance frequency, and the current directions of the first antenna 10 and the second antenna 20 are the same.

[0092] In specific implementation, by loading the switch module 30 on the first antenna 10 and / or the second antenna 20, the length of the first antenna 10 and / or the second antenna 20 can be made longer or shorter. As long as it is ensured that under the combined action of the length of the first antenna 10 and / or the second antenna 20 and the loaded switch module 30, the first resonance frequency and the second resonance frequency are both within the operating frequency band and are different from each other, a differential-mode resonance can be generated near the center frequency point of the frequency band.

[0093] For ease of understanding, the radiation effect of the electronic device in this application will be described below. As a comparative example, Figure 4 is a schematic structural diagram of an electronic device in a related technology.

[0094] Please refer to Figure 5 and Figure 6 , Figure 5 is Figure 1 the current amplitude bubble diagram of the electronic device shown near the third resonance frequency, Figure 6 is Figure 4 the current amplitude bubble diagram of the electronic device shown near the third resonance frequency. As shown in Figure 5 and Figure 6 , Figure 4 in the electronic device shown, the two connected antennas resonate separately, and the two resonance modes do not merge well. While in the electronic device shown in Figure 1 , there are resonance currents in both the first antenna 10 and the second antenna 20, and they are evenly distributed, proving that the two resonance modes merge well.

[0095] Please refer to Figure 7 and Figure 8 , Figure 7 is Figure 1 the current vector diagram of the electronic device shown near the third resonance frequency, Figure 8 is Figure 4 the current vector diagram of the electronic device shown near the third resonance frequency. As Figure 7 and Figure 8 shown, Figure 4 in the electronic device shown, the current directions of two connected antennas are opposite, which is not conducive to radiation, while Figure 1 in the electronic device shown, the current directions of the first antenna 10 and the second antenna 20 are the same, and the radiation efficiency is higher.

[0096] Please refer to Figure 9 and Figure 10 , Figure 9 is Figure 1 the ground current diagram of the electronic device shown near the third resonance frequency, Figure 10 is Figure 4 the ground current diagram of the electronic device shown near the third resonance frequency. As Figure 9 and Figure 10 shown, Figure 4 in the electronic device shown, the grounding parts of two connected antennas are connected (integrally formed), so there is only one ground current at the grounding position of the antenna and it is in the same direction. While Figure 1 in the electronic device shown, the ground current direction of the first grounding part 101 is opposite to the ground current direction of the second grounding part 201, so that the probability of forming differential mode resonance between the first antenna 10 and the second antenna 20 near the third resonance frequency is greater, and the radiation efficiency of the first antenna 10 and the second antenna 20 is higher.

[0097] S11 is one of the S parameters and can be used to represent the return loss characteristic. As Figure 11 shown, the electronic device provided by the embodiment of the present application can meet the requirements of each frequency band.

[0098] The following table is a comparison of the antenna efficiency of the electronic device provided by the embodiment of the present invention with the performance of conventional solutions in multiple related technologies in the free, left hand - head, and right hand - head states. According to the following table, it can be seen that the antenna radiation efficiency of the electronic device provided by the embodiment of the present application is relatively high.

[0099]

[0100] In the embodiments of the present application, the above-mentioned electronic device may be a computer, mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), mobile Internet device (MID), wearable device, e-reader, navigator, digital camera, etc.

[0101] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An electronic device, characterized in that, Comprising: A first antenna, the first antenna includes a first grounding portion, and the first antenna is grounded through the first grounding portion; A second antenna, the second antenna includes a second grounding portion, and the second antenna is grounded through the second grounding portion; Wherein, a first gap is provided between the first grounding portion and the second grounding portion, and the first grounding portion is coupled to the second grounding portion; The resonant frequency of the first antenna is a first resonant frequency, the resonant frequency of the second antenna is a second resonant frequency, and the first resonant frequency and the second resonant frequency are different; When the operating frequency of the first antenna and the second antenna is a third resonant frequency, the current direction of the first grounding portion is opposite to the current direction of the second grounding portion; the third resonant frequency is between the first resonant frequency and the second resonant frequency.

2. The electronic device according to claim 1, wherein The electrical length of the first antenna is different from the electrical length of the second antenna.

3. The electronic device according to claim 1, characterized in that, The third resonant frequency f3 satisfies: Wherein, f1 is the first resonant frequency and f2 is the second resonant frequency.

4. The electronic device according to claim 1, wherein The target antenna is the first antenna and / or the second antenna, and a switch module is loaded on the target antenna, and the switch module is used to adjust the resonant frequency of the target antenna.

5. The electronic device according to claim 4, wherein The switch module includes at least one adjustment branch, the adjustment branch includes a switch and an adjustment component connected to each other, one end of the switch away from the adjustment component is connected to the target antenna, one end of the adjustment component away from the switch is grounded, and the adjustment component is a capacitor or an inductor.

6. The electronic device according to claim 1, characterized in that, The electronic device further includes a frame body, and the frame body, the first antenna and the second antenna form a frame together. A first gap is provided between the first end of the first antenna and the first end of the second antenna, a second gap is provided between the second end of the first antenna and the frame body, and a third gap is provided between the second end of the second antenna and the frame body; The first grounding portion is located at the first end of the first antenna, and the second grounding portion is located at the first end of the second antenna.

7. The electronic device according to claim 1, wherein A first gap is provided between the first end of the first antenna and the first end of the second antenna, the second end of the first antenna extends away from the second antenna, and the second end of the second antenna extends away from the first antenna; The first grounding portion is located at the first end of the first antenna, and the second grounding portion is located at the first end of the second antenna.

8. The electronic device according to claim 1, wherein The electrical length L1 of the first antenna satisfies: The electrical length L2 of the second antenna satisfies: Wherein, R1 and R2 are odd numbers, λ is the wavelength corresponding to the center frequency, and the center frequency is the center point frequency of the operating frequency band corresponding to the first antenna and the second antenna.

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