Antenna structure and electronic equipment

Abstract

The present application provides an electronic device, including a first antenna radiator, a second antenna radiator, a first feed source and a second feed source, the first antenna radiator includes a first feeding point and a first grounding point, the second antenna radiator includes a second feeding point and a second grounding point, the first grounding point is arranged adjacent to the second grounding point, the first feeding point is arranged on a side of the first grounding point away from the second grounding point, and the second feeding point is arranged on a side of the second grounding point away from the first grounding point. The first and second feed sources are electrically connected to the first and second feeding points, respectively, and provide feeding signals to the first and second antenna radiators, respectively, and the first and second grounding points are both grounded. Among them, the first antenna radiator also includes a third grounding point and a grounding element, the third grounding point is arranged between the first feeding point and the first grounding point, and the grounding element is connected between the third grounding point and the ground. An antenna structure is also provided. The present application can improve the isolation between antenna radiators and improve antenna performance.

Description

Technical Field

[0001] The present invention relates to the field of wireless communications, and in particular to an antenna structure for wireless communications and an electronic device having the antenna structure. Background Art

[0002] At present, 5G communication has gradually become popular. With the increase of 5G communication frequency bands, the number of antenna radiators is greater than that of 4G LTE. At the same time, full screen and curved screen have become mainstream. Due to the design requirements of full screen and curved screen, the clearance area and space are getting smaller and smaller, which also causes the return position of some antenna radiators to be very close, resulting in reduced isolation of antenna radiators, interference between antenna radiators, and affecting the performance of antenna radiators. Summary of the invention

[0003] The embodiments of the present application provide an antenna structure and an electronic device to solve the above problems.

[0004] On the one hand, an electronic device is provided, the electronic device comprising a first antenna radiator, a second antenna radiator, a first feed source and a second feed source, the first antenna radiator comprising a first feeding point and a first grounding point, the second antenna radiator comprising a second feeding point and a second grounding point, the first grounding point and the second grounding point are arranged adjacent to each other, the first feeding point is arranged on a side of the first grounding point away from the second grounding point, and the second feeding point is arranged on a side of the second grounding point away from the first grounding point; the first feed source is electrically connected to the first feeding point of the first antenna radiator, and is used to provide a feeding signal to the first antenna radiator through the first feeding point, the second feed source is electrically connected to the second feeding point of the second antenna radiator, and is used to provide a feeding signal to the second antenna radiator through the second feeding point, wherein the first grounding point and the second grounding point are both grounded; wherein the first antenna radiator also comprises a third grounding point and a grounding element, the third grounding point is arranged between the first feeding point and the first grounding point, and the grounding element is connected between the third grounding point and the ground.

[0005] On the other hand, an antenna structure is also provided, which includes a first antenna radiator and a second antenna radiator, the first antenna radiator includes a first feeding point and a first grounding point, the second antenna radiator includes a second feeding point and a second grounding point, the first grounding point is arranged adjacent to the second grounding point, the first feeding point is arranged on a side of the first grounding point away from the second grounding point, and the second feeding point is arranged on a side of the second grounding point away from the first grounding point; wherein the first antenna radiator also includes a third grounding point and a grounding element, the third grounding point is arranged between the first feeding point and the first grounding point, and the grounding element is connected between the third grounding point and the ground.

[0006] The present application changes the return ground position of the first antenna radiator by adding the third grounding point and the grounding element between the first feeding point and the first grounding point for grounding, so that the distance between the return ground positions of the first antenna radiator and the second antenna radiator is increased, the isolation between the first antenna radiator and the second antenna radiator is improved, the interference between the first antenna radiator and the second antenna radiator is reduced, and the performance of the antenna radiator is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other deformation methods can be obtained based on these drawings without paying creative work.

[0008] Figure 1 It is a schematic diagram of the principle of an electronic device in an embodiment of the present application.

[0009] Figure 2 It is a schematic plan view of an electronic device in an embodiment of the present application.

[0010] Figure 3 It is a schematic diagram of current distribution of the second antenna radiator and the first antenna radiator of the electronic device in one embodiment of the present application when operating in the first frequency band.

[0011] Figure 4 It is a schematic diagram of a grounding element of an electronic device in an embodiment of the present application.

[0012] Figure 5 This is a first specific example diagram of a grounding element of an electronic device in an embodiment of the present application.

[0013] Figure 6 This is a second specific example diagram of a grounding element of an electronic device in an embodiment of the present application.

[0014] Figure 7 The figure is a functional module diagram showing some components of an electronic device in an embodiment of the present application.

[0015] Figure 8 This is a schematic diagram of the isolation between the first antenna radiator and the second antenna radiator when operating in the first frequency band in one embodiment of the present application. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the embodiments of the present invention, it needs to be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "thickness", "width", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than implying or indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] Please also read Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the principle of an electronic device in an embodiment of the present application, Figure 2 FIG. 1 is a schematic plan view of an electronic device 100 in an embodiment of the present application. Figure 1 and Figure 2 As shown, the electronic device 100 includes an antenna structure 200, and the antenna structure 200 includes a first antenna radiator 10 and a second antenna radiator 20, the first antenna radiator 10 includes a first feeding point 11 and a first grounding point 12, the second antenna radiator 20 includes a second feeding point 21 and a second grounding point 22, the first grounding point 12 is arranged adjacent to the second grounding point 22, the first feeding point 11 is arranged on a side of the first grounding point 12 away from the second grounding point 22, and the second feeding point 21 is arranged on a side of the second grounding point 22 away from the first grounding point 12.

[0019] The first antenna radiator 10 further includes a third grounding point 13 and a grounding element 14. The third grounding point 13 is disposed between the first feeding point 11 and the first grounding point 12. The grounding element 14 is connected between the third grounding point 13 and the ground.

[0020] like Figure 1 and Figure 2 As shown, the electronic device 100 also includes a first feed source 30 and a second feed source 40, the first feed source 30 is electrically connected to the first feeding point 11 of the first antenna radiator 10, and is used to provide a feeding signal to the first antenna radiator 10 through the first feeding point 11, and the second feed source 40 is electrically connected to the second feeding point 21 of the second antenna radiator 20, and is used to provide a feeding signal to the second antenna radiator 20 through the second feeding point 21, wherein the first grounding point and the second grounding point are both grounded.

[0021] Therefore, in the present application, by adding the third grounding point 13 and the grounding element 14 between the first feeding point 11 and the first grounding point 12 for grounding, the return position of the first antenna radiator 10 is changed, so that the distance between the return positions of the first antenna radiator 10 and the second antenna radiator 20 is increased, the isolation between the first antenna radiator 10 and the second antenna radiator 20 is improved, the interference between the first antenna radiator 10 and the second antenna radiator 20 is reduced, and the performance of the antenna radiator is improved.

[0022] Among them, the feed signal provided by the first feed source 30 is fed in through the first feed point 11 and originally returns to the ground through the first grounding point 12, while the feed signal provided by the second feed source 40 is fed in through the second feed point 21 and returns to the ground through the second grounding point 22. Since 5G communication requires more antenna radiators and the antenna radiators are arranged more compactly, the first grounding point 12 of the first antenna radiator 10 and the second grounding point 22 of the second antenna radiator 20 will be closer, resulting in the formation of ground interference between the first antenna radiator 10 and the second antenna radiator 20. In the present application, by adding the third grounding point 13 and the grounding element between the first feed point 11 and the first grounding point 21, the third grounding point 13 is farther away from the second grounding point 22 than the first grounding point 12, thereby increasing the distance between the ground return positions of the first antenna radiator 10 and the second antenna radiator 20, and improving the isolation between the first antenna radiator 10 and the second antenna radiator 20. The feeding signal provided by the first feed source 30 and the feeding signal provided by the second feed source 40 are the feeding currents generated by the first feed source 30 and the second feed source 40 .

[0023] Among them, the first antenna radiator 10 and the second antenna radiator 20 both support the first frequency band, and the third grounding point 13 is grounded through the grounding element 14, and is at least used to improve the isolation between the first antenna radiator 10 and the second antenna radiator 20 when both of them work in the first frequency band, that is, to improve the isolation between the first antenna radiator 10 and the second antenna radiator 20 both working in the first frequency band.

[0024] like Figure 1 and Figure 2 As shown, the first antenna radiator 10 also includes a fourth grounding point 15, and the fourth grounding point 15 is arranged on the side of the first feeding point 11 away from the first grounding point 12. The first antenna radiator 10 also supports the second frequency band, wherein the current path formed by the first feeding point 11 to the third grounding point 13 and the grounding element 14 is used to support the transmission and reception of radio frequency signals in the first frequency band, and the two current paths formed by the first feeding point 11 to the first grounding point 12 and the fourth grounding point 15 are used to support the transmission and reception of radio frequency signals in the second frequency band. That is, the feed signal received from the first feeding point 11 is returned to the ground through the third grounding point 13 and the grounding element 14, so that the first antenna radiator 10 resonates in the first frequency band and supports the transmission and reception of radio frequency signals in the first frequency band. The feed signal received from the first feeding point 11 is also returned to the ground through the first grounding point 12 and the fourth grounding point 15, so that the first antenna radiator 10 resonates in the second frequency band and supports the transmission and reception of radio frequency signals in the second frequency band. Among them, in the second frequency band, the feeding signal / feeding current received from the first feeding point 11 is mainly returned to the ground through the first grounding point 12 and the fourth grounding point 15, and at least partially returned to the ground through the third grounding point 13 and the grounding element 14, thereby realizing tuning / fine-tuning of the second frequency band.

[0025] In the present application, the first frequency band is the 5G N78 frequency band (the N78 frequency band under the 5G NSA communication standard), and the second frequency band is the MHB (Middle high band) frequency band. Obviously, in other embodiments, the first frequency band and the second frequency band may be other frequency bands.

[0026] The frequency band supported by the second antenna radiator 20 and the first antenna radiator 10 may be the same, that is, the second antenna radiator 20 may also support the second frequency band while supporting the first frequency band and the second frequency band at the same time, that is, supporting the MHB frequency band and the 5G N78 frequency band. The current path from the second feeding point 21 to the second grounding point 22 is used to realize the reception and transmission of radio frequency signals in the first frequency band and the second frequency band, that is, the feeding signal received from the second feeding point 21 is returned to the ground through the second grounding point 22, so that the second antenna radiator 20 resonates in the first frequency band and the second frequency band at the same time, and realizes the reception and transmission of radio frequency signals in the first frequency band and the second frequency band at the same time.

[0027] Among them, in the present application, improving the isolation between the first antenna radiator 10 and the second antenna radiator 20 specifically refers to improving the isolation when the first antenna radiator 10 and the second antenna radiator 20 simultaneously operate in the first frequency band, such as the 5G N78 frequency band.

[0028] The first grounding point 11, the second grounding point 12 and the fourth grounding point 15 can be grounded through electrical connectors such as wires, FPCs, and metal springs.

[0029] See also Figure 3 , is a schematic diagram of the current distribution of the second antenna radiator 10 and the first antenna radiator 10 of the electronic device 100 when they work in the first frequency band. Among them, the transmission and reception of the radio frequency signal in the first frequency band, that is, the 5G N78 frequency band, is mainly realized through the feeding path from the first feeding point to the third grounding point 13 and the grounding element 14 back to the ground, that is, at this time, the feeding signal / feeding current is transmitted from the first feeding point 11 to the third grounding point 13 and the grounding element 14 and back to the ground, and the feeding signal / feeding current of the second antenna radiator 10 is transmitted from the second feeding point 21 to the second grounding point 22 and back to the ground. Since the third grounding point 13 is farther from the second grounding point 22 of the second antenna radiator 20 than the first grounding point 12, therefore, when the first antenna radiator 10 and the second antenna radiator 20 work in the 5G N78 frequency band at the same time, the distance between the ground return positions of the first antenna radiator 10 and the second antenna radiator 20 is relatively increased, thereby improving the isolation between the first antenna radiator 10 and the second antenna radiator 20.

[0030] Among them, Figure 1 and Figure 2 As shown, there is a gap 51 between the first feeding point 11 of the first antenna radiator 10 and the third grounding point 13, and the third grounding point 13 is specifically located between the gap 51 and the first grounding point 12. The feeding signal received by the first feeding point 11 of the first antenna radiator 10 is coupled and transmitted to the third grounding point 13 and / or the first grounding point 11 by means of coupled feeding.

[0031] In some embodiments, Figure 2 As shown, the electronic device 100 includes a metal frame 50 , wherein the metal frame 50 is provided with at least one gap 51 , and the metal frame 50 is divided into at least one frame segment 52 .

[0032] in, Figure 2 Only a portion of the metal frame 50 is shown schematically, wherein Figure 1 and Figure 2As shown, the at least one frame segment 52 at least includes a first frame segment 52a and a second frame segment 52b separated by a gap 51. The first feeding point 11 of the first antenna radiator 10 is arranged at a position of the first frame segment 52a close to the second frame segment 52b, the first grounding point 12 and the third grounding point 13 of the first antenna radiator 10 are arranged at a position of the second frame segment 52b close to the first frame segment 52a, the third grounding point 13 is arranged between the first grounding point 12 and the first frame segment 52a, the second feeding point 21 is arranged at a position of the second frame segment 52b away from the first frame segment 52a, and the second grounding point 22 is arranged on the second frame segment 52b and located between the second feeding point 21 and the first grounding point 12.

[0033] Specifically, Figure 2 As shown, the first frame segment 52a is in a straight strip shape and is located on the first side B1 of the electronic device 100. The second frame segment 52b extends on the first side B1 and the adjacent second side B2 of the electronic device 100. The second frame segment 52b is in an inverted "L" shape.

[0034] The second frame segment 52b includes a first sub-frame segment 521b and a second sub-frame segment 522b, wherein the first sub-frame segment 521 is a portion of the second frame segment 52b located on the first side B1 of the electronic device 100, and the second sub-frame segment 522b is a portion of the second frame segment 52b located on the second side B2 of the electronic device 100.

[0035] The first feeding point 11 is arranged at a position of the first frame segment 52a close to the second frame segment 52b (i.e., the first sub-frame segment 521b). The first feed source 30 is connected to the first feeding point 11. The first grounding point 12 and the third grounding point 13 of the first antenna radiator 10 are arranged in the first sub-frame segment 521b, and the first grounding point 12 is closer to the first frame segment 52a than the third grounding point 13.

[0036] The second feeding point 21 is arranged at a position of the second sub-frame segment 522b away from the first sub-frame segment 521b, and the second grounding point 22 is arranged at a position of the second sub-frame segment 522b close to the first sub-frame segment 521b.

[0037] The first frame segment 52a and the first sub-frame segment 521b of the second frame segment 52b located at the first side B1 of the electronic device 100 constitute the first antenna radiator 10 , and the second sub-frame segment 522b constitutes the second antenna radiator 20 .

[0038] For the second antenna radiator 20, after the second feeding point 21 receives the feeding signal / feeding current of the second feed source 40, it is transmitted to the second grounding point 22 through the second sub-frame segment 522b and then returned to the ground, so that the first frequency band and the second frequency band radio frequency signals can be transmitted and received. That is, the second antenna radiator 20 can support the transmission and reception of radio frequency signals of the first frequency band and the second frequency band under the stimulation of the feeding signal generated by the second feed source 40, for example, support the transmission and reception of radio frequency signals of the MHB band and the 5G N78 band.

[0039] In some embodiments, the first side B1 of the electronic device 100 is a short side, and the second side B2 is a long side adjacent to the first side B1.

[0040] in, Figure 2 The structure diagram of the electronic device 100 only shows part of the antenna radiator. The metal frame 50 also includes a plurality of other frame segments separated by gaps and distributed on the first side B1 and its opposite side, the second side B2 and its opposite side. The antenna structure 200 also includes a plurality of other antenna radiators formed by these other frame segments, which are not shown in the figure because they are not related to the improvement of the present invention.

[0041] Obviously, in other embodiments, no gap may be provided between the first antenna radiator 10 and the second antenna radiator 20, and they share a common radiator. For example, the feeding point and the grounding point of the first antenna radiator 10 and the second antenna radiator 20 are connected to the same frame segment.

[0042] Among them, Figure 2 As shown, the electronic device 100 further includes a middle frame 60, which is a panel-shaped frame for supporting a display screen (not shown) of the electronic device 100, wherein the middle frame is made of a metal material, such as copper, iron, or a copper-iron alloy. The middle frame is used as the whole ground of the electronic device 100.

[0043] The first grounding point 11, the second grounding point 12, the third grounding point 13 and the fourth grounding point 15 are electrically connected to the middle frame 60 to achieve grounding. For example, the first grounding point 11, the second grounding point 12 and the fourth grounding point 15 can be electrically connected to the middle frame 60 through electrical connectors such as wires, FPCs, and metal springs to achieve grounding, and the third grounding point 13 can be electrically connected to the middle frame 60 through the aforementioned grounding element 14 to achieve grounding.

[0044] like Figure 2As shown, most of the edge areas of each side of the middle frame 60 close to the metal frame 50 are removed to form a clearance area, and a small part of the edge areas of each side of the middle frame 60 extends to the metal frame 50, and is electrically in contact with the metal frame 50, serving as the grounding point of the corresponding antenna radiator. That is, the middle frame 60 was originally a square frame with four sides extending roughly to a position flush with the four sides of the metal frame 50. The clearance area is formed by removing most of the edge areas of each side of the middle frame 60 close to the metal frame 50 by cutting or the like, thereby avoiding affecting the radio frequency reception and transmission of the antenna radiator formed by the metal frame 50, while retaining some areas that are still in electrical contact with the metal frame 50, thereby achieving the grounding of the antenna radiator. For example, the middle frame 60 has at least one area extending to the metal frame 50, such as Figure 2 In the region 61 shown, the first grounding point 12 of the first antenna radiator 10 and the second grounding point 22 of the second antenna radiator 20 are directly in electrical contact with the region 61 or are in electrical contact / electrical connection with an electrical connector such as an FPC or a metal spring to achieve grounding. Figure 2 As shown, the area 61 of the middle frame 60 extends to the corresponding position of the metal frame 50, for example, extends to the bottom or inner side of the metal frame 50, and the first grounding point 12 of the first antenna radiator 10 and the second grounding point 22 of the second antenna radiator 20 are both directly in electrical contact with the area 61 of the middle frame 60 or electrically connected through electrical connectors such as FPC and metal springs to achieve grounding.

[0045] In some embodiments, the metal frame 50 may be a bare metal frame, that is, the metal material of the metal frame 50 can be directly seen from the appearance of the electronic device 100 .

[0046] In other embodiments, the metal frame 50 may also be a metal frame wrapped with non-conductive materials such as plastic, which is formed by an MDA (Mold In-Depth) process.

[0047] Among them, when the metal frame 50 is a metal frame wrapped with non-conductive materials such as plastic, a through hole penetrating the non-conductive material can be opened on the inner side of the metal frame 50, so that the feeding point and the grounding point of the antenna radiator formed by the metal frame 50 are exposed to be connected to the corresponding feed source or ground, thereby realizing the excitation of the antenna radiator.

[0048] In some embodiments, Figure 2As shown, the grounding element 14 may be a switch element, and the grounding element 14 is a digitally controlled switch, for example, a controlled switch such as a MOS tube or a triode, and may be controlled to be turned on or off, so as to realize grounding or not grounding the third grounding point 13. In some embodiments, the grounding switch 14 may also be a matching element such as a capacitor, an inductor or an LC parallel circuit, or a structure formed by connecting a switch element and a matching element in series.

[0049] Among them, through the structure of the switch series matching element, matching tuning can be effectively performed as needed. For example, when the first antenna radiator 10 and the second antenna radiator 20 operate in the 5G N78 frequency band, the isolation between the first antenna radiator 10 and the second antenna radiator 20 when operating in the 5G N78 frequency band is improved by controlling the switch element to be turned on, and when the first antenna radiator 10 and the second antenna radiator 20 operate in the MHB frequency band, the switch element is kept turned on, and the MHB frequency band can be further fine-tuned, for example, the operating frequency of the MHB frequency band is adjusted to improve the performance of the first antenna radiator 10 operating in the MHB frequency band. Among them, when the first antenna radiator 10 and the second antenna radiator 20 operate in the 5G N78 frequency band, by controlling the switch element to be turned on, in addition to improving the isolation between the first antenna radiator 10 and the second antenna radiator 20 when operating in the 5G N78 frequency band, the 5G N78 frequency band can also be further fine-tuned. In other embodiments, the grounding element 14 may also be an electrical connector such as a wire, an FPC, or a metal spring.

[0050] That is, in some embodiments, the grounding element 14 may be at least one of a switch element, a capacitor, an inductor, a wire, an FPC, and a metal spring.

[0051] See also Figure 4 , is a schematic diagram of a grounding element 14 in an embodiment of the present application. Figure 4 As shown, the grounding element 14 includes a plurality of matching element branches Z1 connected in parallel, each matching element branch includes a matching element M1 and a switch SW1 connected in series, and at least one of the type and parameters of the matching element M1 in different matching branches Z1 is different; by controlling the on and off of the switches in different matching element branches, different matching element branches are selected to work, so that the frequency point of the working frequency band of the first antenna radiator 10 can be adjusted / fine-tuned.

[0052] See also Figure 5 , is a first specific example diagram of the grounding element 14 in one embodiment of the present application. Figure 5As shown, in some embodiments, the grounding element 14 includes a first inductance matching branch Z11, a first capacitance matching branch Z12, a second capacitance matching branch Z13 and a third capacitance matching branch Z14 connected in parallel between the third grounding point 13 and the ground, the first inductance matching branch Z11 includes a first matching inductor L11 and a switch SW1 connected in series, the first capacitance matching branch Z12 includes a first matching capacitor C11 and a switch SW1 connected in series, the second capacitance matching branch Z13 includes a second matching capacitor C12 and a switch SW1 connected in series, and the third capacitance matching branch Z14 includes a third matching capacitor C13 and a switch SW1 connected in series.

[0053] The capacitance values ​​of the first matching capacitor C11, the second matching capacitor C12 and the third matching capacitor C13 are different. Therefore, due to the different types or parameters of the first inductance matching branch Z11, the first capacitance matching branch Z12, the second capacitance matching branch Z13 and the third capacitance matching branch Z14, when different matching branches are turned on or different combinations of matching branches are turned on, different matching parameters are generated to achieve resonant matching in different frequency bands.

[0054] See also Figure 6 , is a second specific example diagram of the grounding element 14 in one embodiment of the present application. Figure 6 As shown, the grounding element 14 includes a second inductance matching branch Z15, a third inductance matching branch Z16, a fourth capacitance matching branch Z17 and a fifth capacitance matching branch Z18 connected in parallel between the third grounding point 13 and the ground, the second inductance matching branch Z15 includes a second matching inductor L12 and a switch SW1 connected in series, the third inductance matching branch Z16 includes a third matching inductor L13 and a switch S21 connected in series, the fourth capacitance matching branch Z17 includes a fourth matching capacitor C14 and a switch SW1 connected in series, and the fifth capacitance matching branch Z18 includes a fifth matching capacitor C15 and a switch SW1 connected in series.

[0055] The inductance values ​​of the second matching inductor L12 and the third matching inductor L13 are different, and the capacitance values ​​of the fourth matching capacitor C14 and the fifth matching capacitor C15 are different. Therefore, when different matching branches are turned on or different combinations of matching branches are turned on, different matching parameters are generated to achieve resonant matching in different frequency bands.

[0056] In some embodiments, the switch SW1 is a digitally controlled switch, such as a MOS transistor, a BJT transistor, etc.

[0057] Please also read Figure 7, which is a functional module diagram of some components of the electronic device 100. The electronic device 100 includes the aforementioned antenna structure 200, the first feed source 30, the second feed source 40, the metal frame 50, the middle frame 60, and may also include a processor 70 and a memory 80. The memory 80 may store the correspondence between each frequency point of the first frequency band and the second frequency band supported by the first antenna radiator 10 and the switch control logic in the switch unit.

[0058] The processor 2 may include a plurality of output control terminals, and the plurality of output control terminals may be connected one by one to the controlled terminals of all switches SW1 of the grounding element 14, for example, when the switches SW1 in the grounding element 14 are MOS transistors, the plurality of output control terminals of the processor 2 may be connected to the gates of all MOS transistors of the grounding element 14. The processor 2 may determine the switch control logic according to the current tuning requirement, and control each output control terminal to output a signal of a corresponding level to the controlled terminal of the corresponding switch SW1 in the grounding element 14, and control the plurality of switches SW1 in at least one switch unit 16 to be turned on or off accordingly.

[0059] For example, the processor 2 can determine the frequency point to which the current frequency band needs to be tuned according to the frequency band in which the first antenna radiator 10 is currently operating and the application currently running on the electronic device 100, and then determine the corresponding switch control logic according to the corresponding relationship stored in the memory 80, and control the multiple switches SW1 in the grounding element 14 to be turned on or off accordingly, so that the grounding element 14 is adjusted to the corresponding matching parameters, and the first antenna radiator 10 is tuned to the corresponding frequency point in the corresponding first frequency band or the second frequency band. In this application, the frequency point refers to the resonant center frequency of the corresponding frequency band. By tuning the frequency point, the resonance can be maximized and the performance of the antenna radiator can be optimized.

[0060] For example, when the first antenna radiator 10 is currently operating in the first frequency band, i.e., the MHB frequency band, and the currently running application is news browsing, the processor 2 can determine that it is necessary to tune to the first frequency point of the first frequency band, and if the currently running application is a voice call application, it is determined that it is necessary to tune to the second frequency point of the first frequency band. The above is only an example, just to illustrate that the frequency point to be tuned to is different depending on the currently running application.

[0061] Therefore, in the present application, since the grounding element 14 includes multiple parallel matching element branches Z1, each matching element branch includes a matching element M1 and a switch SW1 connected in series, and at least one of the type and parameters of the matching element M1 in different matching branches Z1 is different, in addition to improving the isolation between the first antenna radiator 10 and the second antenna radiator 20 when operating in the 5G N78 frequency band, the 5G N78 frequency band and the HMB frequency band can also be further tuned.

[0062] See also Figure 8 , which is a schematic diagram of the isolation between the first antenna radiator and the second antenna radiator in one implementation of the present application when they operate in the second frequency band, that is, when they operate in the 5G N78 frequency band.

[0063] like Figure 8 As shown, when working in the 5G N78 frequency band, the isolation D1 between the first antenna radiator 10 and the second antenna radiator 20 is basically below -23db, the isolation is already quite obvious, the interference between the two is already very low, and the interference is effectively reduced. Figure 7 From the resonance curve Q1 of the first antenna radiator 10 and the resonance curve Q2 of the second antenna radiator 20, the S parameters of the first antenna radiator 10 and the second antenna radiator 20, especially the amplitude of the return loss parameter in the S parameter, are respectively about -15 and -10. In fact, the efficiency of the first antenna radiator 10 and the second antenna radiator 20 is also effectively improved. That is, the efficiency of the first antenna radiator 10 and the second antenna radiator 20 is not reduced, but due to the improvement of isolation, each has a certain improvement, such as an improvement of 0.3-0.5db.

[0064] The electronic device 100 further includes other components, such as a rear housing, a camera, etc., which are irrelevant to the improvement of the present invention and will not be described in detail.

[0065] The electronic device 100 involved in the embodiment of the present invention may include various mobile phones, tablet computers and other handheld devices with antenna radiators, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), etc. For the convenience of description, the above-mentioned devices are collectively referred to as electronic devices.

[0066] Therefore, in the present application, by adding the third grounding point 13 and the grounding element between the first feeding point 11 and the first grounding point 11, the return position of the first antenna radiator 10 is changed, so that the distance between the return positions of the first antenna radiator 10 and the second antenna radiator 20 is increased, the isolation between the first antenna radiator 10 and the second antenna radiator 20 is improved, the interference between the first antenna radiator 10 and the second antenna radiator 20 is reduced or avoided, and the performance of the antenna radiator is improved.

[0067] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0068] The embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electronic device, characterized in that: The electronic device comprises a first antenna radiator, a second antenna radiator, a first feed source and a second feed source, the first antenna radiator comprises a first feeding point and a first grounding point, the second antenna radiator comprises a second feeding point and a second grounding point, the first grounding point is arranged adjacent to the second grounding point, the first feeding point is arranged on a side of the first grounding point away from the second grounding point, and the second feeding point is arranged on a side of the second grounding point away from the first grounding point; the first feed source is electrically connected to the first feeding point of the first antenna radiator, and is used to provide a feeding signal to the first antenna radiator through the first feeding point, the second feed source is electrically connected to the second feeding point of the second antenna radiator, and is used to provide a feeding signal to the second antenna radiator through the second feeding point, wherein the first grounding point and the second grounding point are both grounded; Wherein, the first antenna radiator further includes a third grounding point and a grounding element, the third grounding point is arranged between the first feeding point and the first grounding point, and the grounding element is connected between the third grounding point and the ground; Among them, the first antenna radiator and the second antenna radiator both support the first frequency band, and the third grounding point is grounded through the grounding element and is at least used to improve the isolation when the first antenna radiator and the second antenna radiator both operate in the first frequency band.

2. The electronic device according to claim 1, characterized in that: The first antenna radiator also includes a fourth grounding point, which is arranged on a side of the first feeding point away from the first grounding point, wherein the first antenna radiator also supports a second frequency band, wherein the two current paths formed by the first feeding point to the first grounding point and the fourth grounding point are respectively used to realize the transmission and reception of radio frequency signals in the second frequency band, and the current path formed by the first feeding point to the third grounding point and the grounding element is used to realize the transmission and reception of radio frequency signals in the first frequency band.

3. The electronic device according to claim 2, characterized in that: The second antenna radiator also supports a second frequency band, wherein the current path from the second feeding point to the second grounding point is used to realize the transmission and reception of radio frequency signals in the first frequency band and the second frequency band.

4. The electronic device according to claim 3, characterized in that: in, The first frequency band is the 5G N78 frequency band, and the second frequency band is the MHB frequency band.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device also includes a metal frame, wherein the metal frame is provided with at least one gap, and the metal frame is divided into at least one frame segment, and the at least one frame segment at least includes a first frame segment and a second frame segment adjacent to each other separated by the gap; the first feeding point is arranged at a position of the first frame segment close to the second frame segment, the first grounding point and the third grounding point of the first antenna radiator are arranged at a position of the second frame segment close to the first frame segment, the second feeding point is arranged at a position of the second frame segment away from the first frame segment, and the second grounding point is arranged on the second frame segment and is located between the second feeding point and the first grounding point.

6. The electronic device according to claim 5, characterized in that: The first frame segment is a straight strip and is located on the first side of the electronic device, and the second frame segment extends to the first side and the adjacent second side of the electronic device, wherein the second frame segment includes a first sub-frame segment and a second sub-frame segment, the first sub-frame segment is the portion of the second frame segment located on the first side of the electronic device, and the second sub-frame segment is the portion of the second frame segment located on the second side of the electronic device, the first feeding point is arranged at a position of the first frame segment close to the first sub-frame segment, the first grounding point and the third grounding point of the first antenna radiator are arranged at the first sub-frame segment, the first frame segment and the first sub-frame segment constitute the first antenna radiator, the second feeding point is arranged at a position of the second sub-frame segment away from the first sub-frame segment, the second grounding point is arranged at a position of the second sub-frame segment close to the first sub-frame segment, and the second sub-frame segment constitutes the second antenna radiator.

7. The electronic device according to claim 6, characterized in that: The first side of the electronic device is a short side, and the second side is a long side adjacent to the first side.

8. The electronic device according to claim 5, characterized in that: The electronic device further comprises a middle frame, which is made of metal material and serves as a whole ground of the electronic device. The first grounding point, the second grounding point and the third grounding point are electrically connected to the middle frame to achieve grounding.

9. The electronic device according to claim 8, characterized in that: Most of the edge areas of each side of the middle frame close to the metal frame are removed to form a clear area, and a small part of the edge areas of each side of the middle frame extends to the metal frame and is electrically contacted with the metal frame to serve as the grounding point of the corresponding antenna radiator.

10. The electronic device according to claim 9, characterized in that: The first grounding point of the first antenna radiator and the second grounding point of the second antenna radiator are directly in contact with the same area of ​​the middle frame extending to the metal frame or are in electrical contact through electrical connectors such as FPC and metal springs to achieve grounding.

11. The electronic device according to claim 5, characterized in that: The metal frame is a bare metal frame, or a metal frame wrapped with a non-conductive material formed by an in-mold insert integrated process.

12. The electronic device according to claim 1, characterized in that: The grounding element is at least one of a switch element, a capacitor, an inductor, a wire, an FPC and a metal spring.

13. The electronic device according to claim 1, characterized in that: The grounding element includes a plurality of matching element branches connected in parallel, each matching element branch includes a matching element and a switch connected in series, and at least one of the type and parameters of the matching elements in different matching branches is different; by controlling the on and off of the switches in different matching element branches, different matching element branches are selected to work and the frequency point of the working frequency band of the first antenna radiator is adjusted.

14. An antenna structure, comprising a first antenna radiator and a second antenna radiator, wherein the first antenna radiator comprises a first feeding point and a first grounding point, and the second antenna radiator comprises a second feeding point and a second grounding point, wherein the first grounding point is arranged adjacent to the second grounding point, the first feeding point is arranged on a side of the first grounding point away from the second grounding point, and the second feeding point is arranged on a side of the second grounding point away from the first grounding point; in, The first antenna radiator further includes a third grounding point and a grounding element, wherein the third grounding point is arranged between the first feeding point and the first grounding point, and the grounding element is connected between the third grounding point and the ground; Among them, the first antenna radiator and the second antenna radiator both support the first frequency band, and the third grounding point is grounded through the grounding element and is at least used to improve the isolation when the first antenna radiator and the second antenna radiator both operate in the first frequency band.

15. The antenna structure according to claim 14, characterized in that: The first antenna radiator also includes a fourth grounding point, which is arranged on a side of the first feeding point away from the first grounding point, wherein the first antenna radiator also supports a second frequency band, wherein the two current paths formed by the first feeding point to the first grounding point and the fourth grounding point are respectively used to realize the transmission and reception of radio frequency signals in the second frequency band, and the current path formed by the first feeding point to the third grounding point and the grounding element is used to realize the transmission and reception of radio frequency signals in the first frequency band.

16. The antenna structure according to claim 15, characterized in that: The second antenna radiator also supports a second frequency band, wherein the current path from the second feeding point to the second grounding point is used to realize the transmission and reception of radio frequency signals in the first frequency band and the second frequency band.

17. The antenna structure according to claim 16, characterized in that: in, The first frequency band is the 5G N78 frequency band, and the second frequency band is the MHB frequency band.

18. The antenna structure according to claim 14, characterized in that: The grounding element includes a plurality of matching element branches connected in parallel, each matching element branch includes a matching element and a switch connected in series, and at least one of the type and parameters of the matching elements in different matching branches is different; by controlling the on and off of the switches in different matching element branches, different matching element branches are selected to work and the frequency point of the working frequency band of the first antenna radiator is adjusted.

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