Antenna assembly and electronic equipment

Abstract

The embodiment of the invention provides an antenna assembly. The antenna assembly comprises a first antenna unit, a second antenna unit and a third antenna unit. And first and second antenna units. The first radiation branch knot of the first antenna unit is located between the second radiation branch knot of the second antenna unit and the third radiation branch knot of the third antenna unit, and is coupled with the second radiation branch knot and the third radiation branch knot. The first feed source excitation antenna assembly of the first antenna unit generates a first resonant mode working in a first frequency band, and the second feed source excitation antenna assembly of the second antenna unit generates a second resonant mode working in the first frequency band. The radiation branch where the main radiation current of the first resonance mode is located is different from the radiation branch where the main radiation current of the second resonance mode is located. The invention further provides electronic equipment. According to the invention, the isolation between the antenna units can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an antenna assembly and an electronic device having the antenna assembly. Background Art

[0002] At present, with the popularization of 5G communication technology, people's communication experience is getting better and better. With the popularization of full-screen and curved screens, the clearance left for antennas is getting smaller and smaller, so in some cases, some antennas with the same frequency have to be set close together. However, there will be greater interference between antennas with the same frequency. In order to increase the isolation between antennas with the same frequency, additional decoupling elements are often used or the antennas with the same frequency are set farther away, which leads to increased costs or difficulties in layout. Summary of the invention

[0003] The present application provides an antenna assembly and an electronic device to solve the above problems.

[0004] In a first aspect, an antenna assembly is provided, the antenna assembly comprising a first antenna unit, a second antenna unit and a third antenna unit. The first antenna unit comprises a first radiating branch, a first matching unit and a first feed source, the first radiating branch comprises a first feeding point, and the first feeding point is connected to the first feed source through the first matching unit. The second antenna unit comprises a second radiating branch, a second matching unit and a second feed source, the second radiating branch is located on one side of the first radiating branch and is mutually coupled with the first radiating branch, the second radiating branch comprises a second feeding point, and the second feeding point is connected to the second feed source through the second matching unit. The third antenna unit comprises a third radiating branch, the third radiating branch is located on the side of the first radiating branch away from the second radiating branch, and is mutually coupled with the first radiating branch. The first feed source is used to excite the antenna assembly to generate a first resonant mode operating in a first frequency band, the second feed source is used to excite the antenna assembly to generate a second resonant mode operating in the first frequency band, and the radiating branch where the main radiation current of the first resonant mode is located is different from the radiating branch where the main radiation current of the second resonant mode is located.

[0005] In a second aspect, an electronic device is also provided, the electronic device comprising an antenna assembly. The antenna assembly comprises a first antenna unit, a second antenna unit and a third antenna unit. The first antenna unit comprises a first radiating branch, a first matching unit and a first feed source, the first radiating branch comprises a first feeding point, and the first feeding point is connected to the first feed source through the first matching unit. The second antenna unit comprises a second radiating branch, a second matching unit and a second feed source, the second radiating branch is located on one side of the first radiating branch and is mutually coupled with the first radiating branch, the second radiating branch comprises a second feeding point, and the second feeding point is connected to the second feed source through the second matching unit. The third antenna unit comprises a third radiating branch, the third radiating branch is located on the side of the first radiating branch away from the second radiating branch, and is mutually coupled with the first radiating branch. The first feed source is used to excite the antenna assembly to generate a first resonant mode operating in a first frequency band, the second feed source is used to excite the antenna assembly to generate a second resonant mode operating in the first frequency band, and the radiating branch where the main radiation current of the first resonant mode is located is different from the radiating branch where the main radiation current of the second resonant mode is located.

[0006] The electronic device and antenna assembly of the present application, since the radiation branch where the main radiation current of the first resonance mode working in the first frequency band generated by the first feed source exciting the antenna assembly is located is different from the radiation branch where the main radiation current of the second resonance mode working in the first frequency band generated by the second feed source exciting the antenna assembly is located, it is possible to effectively increase the isolation of the antenna assembly 1 working in the first frequency band in the first resonance mode and the second resonance mode at the same time, and effectively reduce the interference between them. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0008] Figure 1 It is a simple structural diagram of an antenna assembly in one embodiment of the present application.

[0009] Figure 2 Schematic diagram of the structure and current distribution of a reference antenna assembly.

[0010] Figure 3 It is a schematic diagram of the return loss curve and isolation curve of the reference antenna component.

[0011] Figure 4 It is a schematic diagram of a system total efficiency curve and a radiation efficiency curve of a reference antenna assembly 1 ′.

[0012] Figure 5 Schematic diagram of the simple structure and current distribution of the antenna assembly in some embodiments of the present application.

[0013] Figure 6 Schematic diagram of another simple structure and current distribution of an antenna assembly in some embodiments of the present application.

[0014] Figure 7 Schematic diagram of another simple structure and current distribution of an antenna assembly in some embodiments of the present application.

[0015] Figure 8 Schematic diagram of the third matching unit in some embodiments of the present application.

[0016] Fig. 9 Schematic diagram of a return loss curve of an antenna assembly in some embodiments of the present application.

[0017] Fig.10 Schematic diagram comparing isolation curves of antenna assemblies in some embodiments of the present application and reference antenna assemblies.

[0018] Fig.11 Schematic diagram of a total system efficiency curve and a radiation efficiency curve of an antenna assembly in some embodiments of the present application.

[0019] Fig.12 Schematic diagram of another simple structure and current distribution of the antenna assembly in some embodiments of the present application.

[0020] Fig.13 Schematic diagram of another return loss curve of the antenna assembly in some embodiments of the present application.

[0021] Fig.14 It is another comparative schematic diagram of the isolation curves of the antenna assembly in some embodiments of the present application and the reference antenna assembly 1 ′.

[0022] Fig.15 Schematic diagram of a total system efficiency curve and a radiation efficiency curve of an antenna assembly in some embodiments of the present application.

[0023] Fig.16 Schematic diagrams of other simple structures and current distribution of antenna components in some embodiments of the present application.

[0024] Fig.17 It is another schematic diagram of a return loss curve of the antenna assembly in some embodiments of the present application.

[0025] Fig.18 It is another schematic diagram comparing the isolation curve parameters of the antenna assembly in some embodiments of the present application under various structures with the isolation curve of the reference antenna assembly.

[0026] Fig.19 This is another simple structural schematic diagram of the antenna assembly in some embodiments of the present application.

[0027] Fig. 20 It is a schematic plan view of an electronic device in some embodiments of the present application. DETAILED DESCRIPTION

[0028] 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.

[0029] In the description of the embodiments of the present invention, it should 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. The term "connection" in this application includes relationships such as direct connection, indirect connection, and electrical connection. In the description of the embodiments of the present invention, the terms "first", "second", "third", "fourth", etc. are not specific, but are used to distinguish objects with the same name. If there is a description in the specification, the objects with the same name referred to by the terms "first", "second", "third", "fourth", etc. may be the same objects.

[0030] See also Figure 1 , is a schematic diagram of a simple structure of an antenna assembly 1 in an embodiment of the present application. Figure 1As shown, the antenna assembly 1 includes a first antenna unit 11, a second antenna unit 12 and a third antenna unit 13. The first antenna unit 11 includes a first radiation branch 111, a first matching unit M1 and a first feed source 112. The first radiation branch 111 includes a first feeding point F1, and the first feeding point F1 is connected to the first feed source 112 through the first matching unit M1. The second antenna unit 12 includes a second radiation branch 121, a second matching unit M2 and a second feed source 122. The second radiation branch 121 is located at one side of the first radiation branch 111 and is coupled to the first radiation branch 111; the second radiation branch 121 includes a second feeding point F2, and the second feeding point F2 is connected to the second feed source 122 through the second matching unit M2. The third antenna unit 13 includes a third radiation branch 131, and the third radiation branch 131 is located at a side of the first radiation branch 111 away from the second radiation branch 121, and is coupled to the first radiation branch 111. Among them, the first feed source 112 is used to excite the antenna component 1 to generate a first resonant mode operating in a first frequency band, and the second feed source 122 is used to excite the antenna component 1 to generate a second resonant mode operating in the first frequency band, and the radiation branch where the main radiation current of the first resonant mode is located is different from the radiation branch where the main radiation current of the second resonant mode is located.

[0031] Thus, in the present application, the first radiating branch 111 of the first antenna unit 11 and the second radiating branch 121 of the second antenna unit 12 are adjacent to and spaced apart from each other, and the first feed source 112 connected to the first radiating branch 111 and the second feed source 122 connected to the second radiating branch 121 both excite the antenna component 1 to operate in the first frequency band. However, since the radiating branch where the main radiating current of the first resonant mode operating in the first frequency band generated by the first feed source 112 exciting the antenna component 1 is located is located is different from the radiating branch where the main radiating current of the second resonant mode operating in the first frequency band generated by the second feed source 122 exciting the antenna component 1 is located, the isolation degree of the antenna component 1 operating in the first frequency band in the first resonant mode and the second resonant mode at the same time can be effectively increased, thereby effectively reducing the interference between them.

[0032] Among them, in the present application, the first resonant mode mainly refers to the mode generated by the first feed source 112 exciting the antenna component 1, and the second resonant mode mainly refers to the mode generated by the second feed source 122 exciting the antenna component 1. The first resonant mode and the second resonant mode do not specifically refer to a certain mode. In different situations, the first resonant mode may be different, and the second resonant mode may also be different.

[0033] Among them, the aforementioned second radiation branch 121 is located on one side of the first radiation branch 111 and is coupled with the first radiation branch 111, and the third radiation branch 131 is located on the side of the first radiation branch 111 away from the second radiation branch 121, and is coupled with the first radiation branch 111. It can be said that the first radiation branch 111 is located between the second radiation branch 121 and the third radiation branch 131, and is adjacent to and spaced apart from the second radiation branch 121 and the third radiation branch 131, respectively, and is coupled with the second radiation branch 121 and the third radiation branch 131, respectively.

[0034] In some embodiments, the second radiation branch 121 is located on one side of the first radiation branch 111 and is coupled with the first radiation branch 111, and the third radiation branch 131 is located on the side of the first radiation branch 111 away from the second radiation branch 121 and is coupled with the first radiation branch 111. When the radiation branch where the main radiation current of the first resonance mode is located is different from the radiation branch where the main radiation current of the second resonance mode is located, a small amount of radiation current will be coupled to an adjacent branch, so that it can work well in the first frequency band.

[0035] In some embodiments, the main radiation current of the first resonance mode is located at the third radiation branch 131, and the main radiation current of the second resonance mode is located at the first radiation branch 111; or, the main radiation current of the first resonance mode is located at the first radiation branch 111, and the main radiation current of the second resonance mode is located at the second radiation branch 121; or, the main radiation current of the first resonance mode is located at the third radiation branch 131, and the main radiation current of the second resonance mode is located at the second radiation branch 121.

[0036] That is, in some embodiments, when the first feed source 112 excites the antenna component 1 to generate a first resonance mode operating in the first frequency band, the main radiation current is located at the third radiation branch node 131, and when the second feed source 122 excites the antenna component 1 to generate a second resonance mode operating in the first frequency band, the main radiation current may be located at the first radiation branch node 111 or at the second radiation branch node 121. Alternatively, when the first feed source 112 excites the antenna component 1 to generate a first resonance mode operating in the first frequency band, the main radiation current is located at the first radiation branch node 111, and when the second feed source 122 excites the antenna component 1 to generate a second resonance mode operating in the first frequency band, the main radiation current is located at the second radiation branch node 121.

[0037] Among them, Figure 1As shown, the first radiation branch 111 includes a first end P1 and a second end P2 relative to each other, the second radiation branch 121 includes a third end P3 and a fourth end P4 relative to each other, the third radiation branch 131 includes a fifth end P5 and a sixth end P6 relative to each other, the first end P1 and the second end P2 of the first radiation branch 111 are respectively adjacent to and spaced apart from the third end P3 of the second radiation branch 121 and the fifth end P5 of the third radiation branch 131, and the first end P1, the second end P2 of the first radiation branch 111, the third end P3 of the second radiation branch 121 and the fifth end P5 of the third radiation branch 131 are all open ends, and the first radiation branch 111 also includes a first grounding point G1, which is located between the first feeding point F1 and the first end P1 for grounding. The main radiation current of the first resonance mode of the antenna component 1 operating in the first frequency band is located in the first branch portion Z1 between the preset connection point F3 of the third radiation branch 131 and the fifth end P5, and the main radiation current of the second resonance mode of the antenna component 1 operating in the first frequency band is located in the second branch portion Z2 between the first grounding point G1 and the first end P1 of the first radiation branch 111. Alternatively, the main radiation current of the first resonance mode of the antenna component 1 operating in the first frequency band is located in the third branch portion Z3 between the first feeding point F1 and the second end P2 of the first radiation branch 111, and the main radiation current of the second resonance mode of the antenna component 1 operating in the first frequency band is located in the fourth branch portion Z4 between the second feeding point F2 and the third end P3 of the second radiation branch 121. Alternatively, the main radiation current of the first resonance mode of the antenna component 1 operating in the first frequency band is located in the first branch portion Z1 between the preset connection point F3 of the third radiation branch 131 and the fifth end P5, and the main radiation current of the second resonance mode of the antenna component 1 operating in the first frequency band is located in the fourth branch portion Z4 between the second feeding point F2 of the second radiation branch 121 and the third end P3.

[0038] That is, in some embodiments, the main radiation current when the first feed source 112 excites the antenna component 1 to generate a first resonance mode operating in the first frequency band is located at the third radiation branch 131, specifically, the first branch portion Z1 located between the preset connection point F3 of the third radiation branch 131 and the fifth end P5; the main radiation current when the first feed source 112 excites the antenna component 1 to generate a first resonance mode operating in the first frequency band is located at the first radiation branch 111, specifically, the third branch portion Z3 located between the first feeding point F1 and the second end P2 of the first radiation branch 111. When the second feed source 122 excites the antenna component 1 to produce a second resonance mode operating in the first frequency band, the main radiation current is located in the first radiation branch 111, specifically, the second branch part Z2 located between the first grounding point G1 and the first end P1 of the first radiation branch 111; when the second feed source 122 excites the antenna component 1 to produce a second resonance mode operating in the first frequency band, the main radiation current is located in the second radiation branch 121, specifically, the fourth branch part Z4 located between the second feeding point F2 and the third end P3 of the second radiation branch 121.

[0039] Therefore, in the present application, through the above-mentioned method, the main radiation current when the first feed source 112 excites the antenna component 1 to work in the first resonant mode of the first frequency band and the main radiation current when the second feed source 122 excites the antenna component 1 to work in the second resonant mode of the first frequency band are located in different radiation branches. Since the radiation branches where the main radiation current is located are often the main radiation branches, they radiate the main energy. Therefore, when the antenna component 1 works in the first frequency band under the excitation of the first feed source 112 and the second feed source 122, it radiates the main energy through different radiation branches, and the antenna component 1 can simultaneously support the transmission and reception of two electromagnetic wave signals in the same frequency band, and can effectively avoid interference between each other, and effectively improve the isolation.

[0040] Among them, in the present application, the first resonant mode or the second resonant mode of the antenna component 1 operating in the first frequency band, the first resonant mode or the second resonant mode of the antenna component 1, both refer to the first resonant mode or the second resonant mode generated by the antenna component 1 operating in the first frequency band.

[0041] See also Figure 2 , is a schematic diagram of the structure and current distribution of a reference antenna assembly 1'. Figure 2 As shown, the structure of the reference antenna assembly 1' is similar to that of the present application. Figure 1 The structure of the antenna assembly 1 shown in is substantially the same.

[0042] like Figure 2As shown, the reference antenna assembly 1' includes three antenna units 11', 12' and 13'. The antenna unit 11' includes a radiating branch 111', a matching unit M1' and a feed source 112'. The radiating branch 111' includes a feeding point F1', and the feeding point F1' is connected to the feed source 112' through the matching unit M1'. The antenna unit 12' includes a radiating branch 121', a matching unit M2' and a feed source 122'. The radiating branch 121' includes a feeding point F2', and the feeding point F2' is connected to the feed source 122' through the matching unit M2'. The antenna unit 13' includes a radiating branch 131', a matching unit M3' and a feed source 132'. The radiating branch 131' includes a feeding point F3', and the feeding point F3' is connected to the feed source 132' through the matching unit M3'. As shown Figure 2 As shown, the radiation branch 111 ′ is located between the radiation branch 121 ′ and the radiation branch 131 ′, and is adjacent to and spaced from the radiation branch 121 ′ and the radiation branch 131 ′.

[0043] Among them, Figure 2 As shown, the radiation branch 111 of the reference antenna assembly 1' includes two opposite ends P1' and P2', the radiation branch 121' includes two opposite ends P3' and P4', and the radiation branch 131' includes two opposite ends P5' and P6'. The two ends P1' and P2' of the radiation branch 111' are respectively adjacent to the end P3' of the radiation branch 121' and the end P5' of the radiation branch 131' and are spaced apart, and the two ends P1' and P2' of the radiation branch 111' are respectively open ends to the end P3' of the radiation branch 121' and the end P5' of the radiation branch 131'. The radiation branch 111' also includes a grounding point G1', which is located between the feeding point F1' and the end P1' and is used for grounding.

[0044] Among them, in the reference antenna component 1', the electrical length of the portion between the feeding point F1' and the end P2' of the radiating branch 111 of the reference antenna component 1' under the matching of the matching unit M1' is λ1 / 4, wherein the λ1 is the wavelength corresponding to the first frequency band, so that the portion between the feeding point F1' and the end P2' of the radiating branch 111 supports the reception and transmission of electromagnetic wave signals in the first frequency band under the excitation of the feed source 112'. Therefore, in the reference antenna component 1', the reference antenna component 1' operates in the first resonant mode of the first frequency band, mainly through the resonance of the portion between the feeding point F1' and the end P2' of the radiating branch 111 in the first frequency band, that is, at this time, the first resonant mode is mainly the mode generated by the antenna unit 11', and is mainly a quarter-wavelength mode of the feeding point F1' and the end P2' of the radiating branch 111. At this time, Figure 2 As shown, when the reference antenna assembly 1 ′ operates in the first resonance mode of the first frequency band, the radiation current i11 ′ is mainly located in the portion between the feeding point F1 ′ and the end P2 ′ of the radiation branch 111 .

[0045] Among them, in the reference antenna component 1', the electrical length of the portion between the grounding point G1' and the end P1' of the radiation branch 111' is λ1 / 4, and since the end P1' of the radiation branch 111' is adjacent to and spaced from the end P3' of the radiation branch 121', the radiation branch 121' of the antenna unit 12' will couple and excite the partial resonance between the grounding point G1' and the end P1' of the radiation branch 111' in the first frequency band under the excitation of the feed source 122'. At this time, in the reference antenna component 1', the reference antenna component 1' operates in the second resonance mode of the first frequency band, which is mainly achieved by the partial resonance between the grounding point G1' and the end P1' of the radiation branch 111 in the first frequency band. Further, the first resonant mode is mainly the mode generated by the antenna unit 12', and is mainly a balanced mode composed of the part between the feeding point F2 of the radiation branch 121' and the grounding point G1' of the radiation branch 111', that is, the main mode at this time is the quarter-wavelength mode of the part between the grounding point G1' of the radiation branch 111' and the end P1', and there is a small amount of reverse current between the feeding point F2' of the radiation branch 121' and the end P3'. Figure 2 As shown, when the reference antenna component 1' operates in the second resonance mode of the first frequency band, the main radiation current i21' is mainly located between the grounding point G1' of the radiation branch 111' and the end P1', and only a small part of the radiation current i22' is distributed between the feeding point F2' of the radiation branch 121' and the end P3', and is opposite to the main radiation current i21'.

[0046] It can be seen that in the reference antenna component 1', the main radiation current of the reference antenna component 1' when operating in the first resonance mode and the second resonance mode of the first frequency band is distributed in the same radiation branch 111, resulting in poor isolation between the first resonance mode and the second resonance mode.

[0047] See also Figure 3 , is a schematic diagram of the return loss curve and isolation curve of the reference antenna assembly 1'. Figure 3 Can be Figure 2 The reference antenna assembly 1 ′ shown is subjected to simulation test to obtain a return loss curve of the reference antenna assembly 1 ′ when the reference antenna assembly 1 ′ operates in the first resonant mode and the second resonant mode of the first frequency band, and an isolation curve therebetween.

[0048] in, Figure 3 Schematically shows a return loss curve S11-1' when the reference antenna component 1' operates in the first resonance mode of the first frequency band, a return loss curve S11-2' when the reference antenna component 1' operates in the second resonance mode of the first frequency band, and an isolation curve Sg1' between the first resonance mode and the second resonance mode.

[0049] Generally speaking, the trough of the return loss curve corresponds to the resonant frequency of the operating frequency band. Generally speaking, the higher the amplitude corresponding to the isolation curve Sg1', the lower the isolation between the first resonant mode and the second resonant mode, and the greater the interference between the two; the lower the amplitude corresponding to the isolation curve Sg1', the higher the isolation between the first resonant mode and the second resonant mode, and the smaller the interference between the two.

[0050] like Figure 3 As shown, at the resonant frequency of the first frequency band, the return loss corresponding to the first resonant mode is approximately -23dB, while the return loss corresponding to the second resonant mode is approximately -18dB, and the isolation between the first resonant mode and the second resonant mode is -6dB.

[0051] It can be seen that in Figure 2 In the structure and mode of the reference antenna component 1' shown, although the return loss of the reference antenna component 1' when operating in the first resonant mode and the second resonant mode of the first frequency band is relatively low, the isolation value between the first resonant mode and the second resonant mode reaches -6dB, which is a relatively high value, so the isolation between each other is relatively low, which easily causes interference to each other.

[0052] See also Figure 4, is a schematic diagram of the system total efficiency curve and radiation efficiency curve of the reference antenna assembly 1'. Among them, Figure 4 It can also be Figure 2 The reference antenna assembly 1 ′ shown is obtained by simulation test, and the reference antenna assembly 1 ′ is simultaneously operated in the first resonant mode and the second resonant mode of the first frequency band, and a total system efficiency curve and a radiation efficiency curve.

[0053] in, Figure 4 Schematically shows the system total efficiency curve St1' and the radiation efficiency curve Sr1' of the reference antenna component 1' operating in the first resonance mode of the first frequency band, and the system total efficiency curve St2' and the radiation efficiency curve Sr2' of the reference antenna component 1' operating in the second resonance mode of the first frequency band.

[0054] Generally speaking, the trough of the return loss curve is the peak of the system total efficiency curve and the radiation efficiency curve, and the corresponding frequency is the resonant frequency of the working frequency band.

[0055] like Figure 4 As shown, at the resonant frequency of the first frequency band, the total system efficiency of the reference antenna component 1' operating in the first resonant mode of the first frequency band is approximately -2.5dB, and the radiation efficiency is also approximately -2.5dB. The total system efficiency of the reference antenna component 1' operating in the second resonant mode of the first frequency band is approximately -3.5dB, and the radiation efficiency is also approximately -3.5dB.

[0056] In general, the system efficiency and radiation efficiency are generally acceptable, but as mentioned above Figure 3 As shown, the isolation value between the first resonance mode and the second resonance mode reaches -6dB, which is a relatively high value, so the isolation between them is relatively low, which easily causes interference to each other.

[0057] Wherein, in some embodiments, Figure 3-Figure 4 As shown, the first frequency band in the present application may be the N78 frequency band (3.4-3.6 GHz), and the resonant frequency is approximately located near the 3.5 GHz range.

[0058] Obviously, Figure 3-Figure 4 This is just an example taking the N78 frequency band as an example, and the first frequency band can be any other frequency band.

[0059] Please also read Figure 1 and Figure 5 , Figure 5 Schematic diagram of the simple structure and current distribution of the antenna assembly 1 in some embodiments of the present application. Figure 5 The structure shown can be used with Figure 1 In some embodiments, the Figure 1 and Figure 5 As shown, the antenna component 1, for example, the third antenna unit 13 also includes a third matching unit M1, and the third matching unit M1 is connected between a preset connection point F3 of the third radiation branch 131 and the ground, and is used for matching and adjusting the first frequency band. The electrical length of the first branch portion Z1 between the preset connection point F3 of the third radiation branch 131 and the fifth end P5 under the matching of the third matching unit M1 is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, and the first feed source 112 excites the first radiation branch 111, and excites the first branch portion Z1 through coupling of the first radiation branch 111 to operate in the first frequency band, so that the main radiation current i11 when the first feed source 112 excites the antenna component 1 to generate a first resonance mode operating in the first frequency band is located in the first branch portion Z1.

[0060] That is, in some embodiments, the electrical length of the first branch section Z1 between the third feeding point F3 and the fifth end P5 of the third radiating branch section 131 under the matching of the third matching unit is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, at this time, the first branch section Z1 can resonate well in the first frequency band, and the first radiating branch section 111 of the first antenna unit 11 will couple and excite the first branch section Z1 of the third radiating branch section 131 to resonate in the first frequency band under the excitation of the first feed source 112. The main radiation current when the first feed source 112 excites the antenna assembly 1 to generate the first resonance mode working in the first frequency band is located in the first branch section Z1.

[0061] like Figure 5 As shown, further speaking, the first resonant mode generated by the antenna component 1 operating in the first frequency band can be a ring mode from the first feeding point F1 of the first radiating branch 111 to the preset connection point F3 of the third radiating branch 131 and through the second sub-matching unit M32 of the third matching unit M1 to the ground. At this time, the main mode is the quarter-wavelength mode of the first branch portion Z1 between the preset connection point F3 of the third radiating branch 131 and the fifth end P5, and there is a small amount of unidirectional current i12 between the first feeding point F1 of the first radiating branch 111 and the second end P2. Therefore, the main radiation current i11 when the first feed source 112 excites the antenna component 1 to generate the first resonant mode operating in the first frequency band is located in the first branch portion Z1.

[0062] See also Figure 6 , for some embodiments of this application Figure 1 Another simple structural schematic diagram and current distribution schematic diagram of the antenna assembly 1 shown in FIG. Figure 6 As shown, the third antenna unit 13 also includes a fourth matching unit M4 and a third feed source 132, and the fourth matching unit M4 is connected between the third feed source 132 and the preset connection point F3. In some embodiments, the preset connection point F3 is the feeding point of the third radiation branch 131, and the fourth matching unit M4 is used to achieve matching adjustment of other frequency bands. The other frequency bands are frequency bands other than the first frequency band.

[0063] Among them, when the third antenna unit 13 includes the third matching unit M3, the fourth matching unit M4 and the third feed source 132 at the same time, the fourth matching unit M4 allows the electromagnetic wave signals of the other frequency bands to pass through, but prevents the electromagnetic wave signals of the first frequency band and other frequency bands from passing through, and the third matching unit M3 is used to implement the matching adjustment of the first frequency band, and the third matching unit M3 allows the electromagnetic wave signals of the first frequency band to pass through, but prevents the electromagnetic wave signals of other frequency bands from passing through. That is, the third matching unit M3 and the fourth matching unit M4 form a bandpass filter that allows the electromagnetic wave signals of the corresponding frequency bands to pass through, so that the electromagnetic wave signals of the first frequency band supported by the antenna assembly 1 will not cause interference with other frequency bands supported by the antenna assembly 1.

[0064] Among them, in some embodiments, when the third matching unit M3 is used for matching adjustment of the first frequency band, the resonance condition of the third branch portion Z3 between the first feeding point F1 and the second end P2 of the original first radiation branch 111 will be destroyed to a certain extent. That is, as mentioned above, the electrical length of the portion between the feeding point F1' and the end P2' of the radiation branch 111' of the reference antenna component 1' under the matching of the matching unit M1' is originally λ1 / 4. In the present application, when the third matching unit M3 is used for matching adjustment of the first frequency band, the electrical length of the portion between the feeding point F1' and the end P2' of the radiation branch 111' of the reference antenna component 1' under the matching of the matching unit M1' will no longer be λ1 / 4, that is, the electrical length of the third branch portion Z3 between the first feeding point F1 and the second end P2 of the first radiation branch 111 will no longer be λ1 / 4. Therefore, at this time, the antenna assembly 1 mainly operates in the first resonance mode of the first frequency band by coupling and exciting the first branch part Z1 through the first radiation branch 111, and the main radiation current i11 of the first resonance mode is located in the first branch part Z1.

[0065] As mentioned above, the main mode at this time is the quarter-wavelength mode of the first branch portion Z1 between the preset connection point F3 of the third radiation branch 131 and the fifth end P5, but there is also a small amount of unidirectional current i12 between the first feeding point F1 of the first radiation branch 111 and the second end P2.

[0066] Obviously, in some embodiments, the third antenna unit 13 may not include the fourth matching unit M4 and the third feed source 132 , and the third radiation branch 131 of the third antenna unit 13 may only exist as a parasitic branch of the first radiation branch 111 .

[0067] See also Figure 7 , for some embodiments of this application Figure 1 The antenna assembly 1 is shown in another simple structural schematic diagram and current distribution schematic diagram. Figure 7 As shown, the preset connection point F3 of the third radiation branch is directly grounded, and the electrical length of the first branch portion Z1 between the preset connection point F3 and the fifth end P5 is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, and the first feed source 112 excites the first radiation branch 111, and excites the first branch portion Z1 through coupling of the first radiation branch 111 to operate in the first frequency band, so that the main radiation current i11 of the first resonant mode is located in the first branch portion Z1.

[0068] That is, in some embodiments, the preset connection point F3 of the third radiation branch is directly grounded, and the electrical length of the first branch portion Z1 itself between the preset connection point F3 and the fifth end P5 is λ1 / 4, and the first feed source 112 excites the first radiation branch 111, and couples and excites the first branch portion Z1 through the first radiation branch 111 to operate in the first frequency band, so that the main radiation current i11 of the first resonant mode is located in the first branch portion Z1.

[0069] Similarly, as mentioned above, the main mode at this time is the quarter-wavelength mode of the first branch portion Z1 between the preset connection point F3 of the third radiating branch 131 and the fifth end P5, but there is also a small amount of unidirectional current i12 between the first feeding point F1 of the first radiating branch 111 and the second end P2.

[0070] in, Figure 7 In the structure shown, the preset connection point F3 is a grounding point, and the third radiation branch 131 can only be used as a parasitic branch of the first radiation branch 111 .

[0071] Obviously, in some embodiments, the third radiating branch 131 may also be provided with a feeding point at other positions, such as outside the first branch portion Z1, to be connected to a corresponding feed source, and operate in other frequency bands under the excitation of the corresponding feed source.

[0072] Among them, Figure 5-Figure 7 As shown, in some embodiments, when the main radiation current i11 of the antenna component 1 is operating in the first resonant mode of the first frequency band, it is located in the first branch portion Z1, the electrical length of the second branch portion Z2 between the first grounding point G1 of the first radiation branch 111 and the first end P1 is λ1 / 4, the second feed source 122 excites the second radiation branch 121, and couples and excites the second branch portion Z2 through the second radiation branch 121 to operate at least in the first frequency band, and the main radiation current i21 of the antenna component 1 is operating in the second resonant mode of the first frequency band, it is located in the second branch portion Z2.

[0073] That is, in some embodiments, when the main radiation current i11 of the antenna component 1 operating in the first resonance mode of the first frequency band is located in the first branch portion Z1, the manner in which the antenna component 1 operates in the second resonance mode of the first frequency band may be the same as the manner in which the aforementioned reference antenna component 1' operates in the second resonance mode of the first frequency band. That is, the mode generated at this time is mainly a balanced mode formed between the second feeding point F2 of the second radiation branch 121 and the first grounding point G1 of the first radiation branch 111, that is, at this time, the main mode of the second resonance mode of the antenna component 1 operating in the first frequency band is the quarter-wavelength mode of the second branch portion Z2 between the first grounding point G1 of the first radiation branch 111 and the first end P1, and there is a small amount of reverse current between the second feeding point F2 of the second radiation branch 121 and the third end P3. That is, as Figure 5-Figure 7 As shown, the main radiation current i21 of the second resonance mode of the antenna component 1 operating in the first frequency band is mainly located in the second branch part Z2 between the first grounding point G1 of the first radiation branch 111 and the first end P1, and only a small part of the radiation current i22 is distributed between the second feeding point F2 of the second radiation branch 121 and the third end P3, and is opposite to the main radiation current i21.

[0074] Thus, in some embodiments, when the main radiation current i11 of the antenna component 1 operating in the first resonant mode of the first frequency band is located in the first branch part Z1 of the third radiation branch 131, the main radiation current i21 of the antenna component 1 operating in the second resonant mode of the first frequency band may be located in the second branch part Z2 of the first radiation branch 111, and thus are respectively located in two independent radiation branches.

[0075] Among them, the third matching unit M3 may include any combination of inductors and / or capacitors. For example, the second sub-matching unit M3 may include an inductor and a capacitor connected in parallel, or an inductor and a capacitor connected in series, or an inductor and a capacitor connected in parallel and then connected in series with an inductor or a capacitor, or a parallel structure of two inductors and capacitors connected in series, or a structure in which a series branch of a capacitor and an inductor are connected in series with a capacitor or / inductor, and so on.

[0076] See also Figure 8 , is a schematic diagram of the second sub-matching unit M32 in some embodiments of the present application.

[0077] like Figure 8 As shown, the second sub-matching unit M32 may include a first inductor L11, a first capacitor C11 and a second capacitor C12, wherein the first inductor L11 is connected in parallel with the first capacitor C11, and then the parallel-connected first inductor L11, the first capacitor C11 and the second capacitor C12 are connected in series between the preset connection point F3 and the ground.

[0078] in, Figure 8 This is just an example. As mentioned above, the second sub-matching unit M32 may also include an inductor and a capacitor connected in parallel, or an inductor and a capacitor connected in series, or a structure in which an inductor and a capacitor are connected in parallel and then in series with an inductor or a capacitor, or a structure in which a series branch of a capacitor and an inductor are connected in series with a capacitor or / inductor, and so on.

[0079] See also Fig. 9 , is a schematic diagram of a return loss curve of the antenna assembly 1 in some embodiments of the present application. Among them, Fig. 9 Can be Figure 5 The antenna assembly 1 shown is a return loss curve obtained by simulation test when the antenna assembly 1 operates in the first resonant mode and the second resonant mode of the first frequency band.

[0080] in, Fig. 9 Schematically shows a return loss curve S11 - 1 of the first resonance mode of the antenna component 1 working in the first frequency band, and a return loss curve S11 - 2 of the second resonance mode of the antenna component 1 working in the first frequency band.

[0081] As mentioned above, generally speaking, the frequency corresponding to the trough of the return loss curve is the resonant frequency of the operating frequency band.

[0082] like Fig. 9As shown, at the resonant frequency of the first frequency band, the return loss of the first antenna unit 11 is approximately -22dB, while the return loss of the second antenna unit 12 is approximately -14dB. The return losses of the antenna units 11' and 12' in the aforementioned reference antenna assembly 1' are basically the same, and the return losses are not significantly increased.

[0083] See also Fig.10 , which is a schematic diagram comparing the isolation curves of the antenna assembly 1 in some embodiments of the present application and the reference antenna assembly 1 ′.

[0084] in, Fig.10 Schematically illustrates the isolation curve Sg1 of the antenna component 1 in some embodiments of the present application when operating in the first resonant mode and the second resonant mode of the first frequency band, and the isolation curve Sg1' of the reference antenna component 1 when operating in the first resonant mode and the second resonant mode of the first frequency band.

[0085] Wherein, the isolation curve Sg1 can be Figure 5 The isolation curve Sg1′ is obtained by performing simulation test on the antenna assembly 1 shown in FIG. 1 , and is obtained by performing simulation test on the antenna assembly ... Figure 2 The reference antenna assembly 1 ′ shown is obtained by simulation test, and is an isolation curve between a first resonant mode and a second resonant mode of the reference antenna assembly 1 ′ operating in a first frequency band.

[0086] As mentioned above, generally speaking, the higher the amplitude corresponding to the isolation curve, the lower the isolation between the two modes and the greater the interference between the two modes; the lower the amplitude corresponding to the isolation curve, the higher the isolation between the two modes and the smaller the interference between the two modes.

[0087] Among them, from the isolation curve Sg1' of the first resonant mode and the second resonant mode of the reference antenna component 1' working in the first frequency band, as mentioned above, at the resonant frequency (for example Figure 8 At the 3.5 GHz frequency shown in FIG, the isolation value between the first resonant mode and the second resonant mode of the reference antenna assembly 1' reaches -6 dB. Fig.10 As shown, from the isolation curve Sg1 when the antenna component 1 operates in the first resonant mode and the second resonant mode of the first frequency band, at the resonant frequency, the isolation value between the first resonant mode and the second resonant mode of the antenna component 1 is approximately -11dB, which is reduced by 5dB.

[0088] It can be seen that in the present application, by making the main radiation current i11 of the antenna component 1 when operating in the first resonance mode of the first frequency band located in the first branch part Z1 of the third radiation branch 131, and the main radiation current i21 of the antenna component 1 when operating in the second resonance mode of the first frequency band located in the second branch part Z2 of the first radiation branch 111, compared with the reference antenna component 1 in which the main radiation current is all in the radiation branch 111', the isolation between the two antenna units 11 can be effectively improved, and the interference can be effectively reduced.

[0089] See also Fig.11 , is a schematic diagram of the total system efficiency curve and the radiation efficiency curve of the antenna assembly 1 in some embodiments of the present application. Among them, Fig.11 Can be Figure 5 The antenna assembly 1 shown is obtained by simulation test, and a total system efficiency curve and a radiation efficiency curve are obtained when the antenna assembly 1 operates in the first resonance mode and the second resonance mode of the first frequency band.

[0090] in, Fig.11 Schematically illustrates a system total efficiency curve St1 and a radiation efficiency curve Sr1 of the antenna assembly 1 operating in a first resonance mode in the first frequency band, and a system total efficiency curve St2 and a radiation efficiency curve Sr2 of the antenna assembly 1 operating in a second resonance mode in the first frequency band.

[0091] Generally speaking, the trough of the return loss curve is the peak of the system total efficiency curve and the radiation efficiency curve, and the corresponding frequency is the resonant frequency of the working frequency band.

[0092] like Fig.11 As shown, at the resonant frequency of the first frequency band, the total system efficiency of the antenna component 1 operating in the first resonant mode of the first frequency band is approximately -2dB, and the radiation efficiency is also approximately -2dB. The total system efficiency of the antenna component 1 operating in the second resonant mode of the first frequency band is approximately -3.5dB, and the radiation efficiency is also approximately -3.5dB.

[0093] In general, the total system efficiency and radiation efficiency are generally acceptable, and are basically the same as the total system efficiency and radiation efficiency of the aforementioned reference antenna assembly 1' operating in the first resonance mode and the second resonance mode of the first frequency band, and the total system efficiency and radiation efficiency are not significantly reduced.

[0094] Thus, according to Figure 9-11It can be seen from the correlation diagram that in the present application, by making the main radiation current i11 of the antenna component 1 when operating in the first resonance mode of the first frequency band be located in the first branch part Z1 of the third radiation branch 131, and the main radiation current i21 of the antenna component 1 when operating in the second resonance mode of the first frequency band be located in the second branch part Z2 of the first radiation branch 111, compared with the reference antenna component 1' operating in the first resonance mode and the second resonance mode of the first frequency band, in which the main radiation currents are both in the radiation branch 111', the return loss, the total system efficiency and the radiation efficiency are similar, and the isolation between the two resonance modes can be effectively improved, and the interference can be effectively reduced, thereby effectively improving the antenna performance.

[0095] Wherein, in some embodiments, Figure 9-11 As shown, the first frequency band in the present application may be the N78 frequency band (3.4-3.6 GHz), and the resonant frequency is approximately located near the 3.5 GHz range.

[0096] Obviously, similarly, Figure 9-11 This is just an example taking the N78 frequency band as an example, and the first frequency band can be any other frequency band.

[0097] See also Fig.12 , is another simple structure and current distribution diagram of the antenna component 1 in some embodiments of the present application.

[0098] In some embodiments, the electrical length of the fourth branch portion Z4 between the second feeding point F2 of the second radiating branch 121 and the third end P3 under the matching of the second matching unit M2 is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, and the second feed source 122 excites the fourth branch portion Z4 of the second radiating branch 121 to operate in the first frequency band, and the main radiation current of the antenna assembly 1 when operating in the second resonant mode of the first frequency band is located in the fourth branch portion Z4.

[0099] That is, in some embodiments, by designing the electrical length of the fourth branch portion Z4 between the second feeding point F2 of the second radiating branch 121 and the third end P3 to be λ1 / 4 under the matching of the second matching unit M2, the fourth branch portion Z4 can support the reception and transmission of electromagnetic wave signals in the first frequency band under the excitation of the second feed source 122, and serve as the main radiating branch segment, so that the main radiation current of the antenna assembly 1 when operating in the second resonant mode of the first frequency band is located in the fourth branch portion Z4.

[0100] Among them, in some embodiments, the position of the first grounding point G1 can also be moved relative to the reference antenna component 1', for example, the first grounding point G1 is moved to a position farther away from the first end P1, thereby destroying the resonance condition of the second branch portion Z2 between the first grounding point G1 and the first end P1, that is, making the electrical length of the second branch portion Z2 between the first grounding point G1 and the first end P1 no longer λ1 / 4. Therefore, the second branch portion Z2 between the first grounding point G1 and the first end P1 is no longer a main radiation branch, and the fourth branch portion Z4 between the second feeding point F2 of the second radiation branch 121 and the third end P3 is used as the main radiation branch to receive and transmit electromagnetic wave signals in the first frequency band, so that the main radiation current i21 of the second antenna unit 12 when operating in the first frequency band is located in the fourth branch portion Z4.

[0101] Among them, further speaking, Fig.12 As shown, the second resonant mode of the antenna component 1 operating in the first frequency band can be a ring mode from the second feeding point F2 of the second radiation branch 112 to the first grounding point G1 and to the ground. At this time, since the electrical length of the fourth branch portion Z4 between the second feeding point F2 of the second radiation branch 121 and the third end P3 is λ1 / 4 under the matching of the second matching unit M2, the main mode is the quarter-wavelength mode of the fourth branch portion Z4 between the second feeding point F2 of the second radiation branch 121 and the third end P3, and there is a small amount of current i22 in the same direction between the second branch portion Z2 between the first grounding point G1 and the first end P1. Therefore, the main radiation current i21 of the second resonant mode of the antenna component 1 operating in the first frequency band is located in the fourth branch portion Z4.

[0102] In some embodiments, when the electrical length of the fourth branch portion Z4 between the second feeding point F2 and the third end P3 of the second radiating branch 121 is λ1 / 4 under the matching of the second matching unit M2, the second feed source 122 excites the fourth branch portion Z4 of the second radiating branch 121 to work at least in the first frequency band, and the main radiation current of the second antenna unit 12 when working in the first frequency band is located in the fourth branch portion Z4, the electrical length of the third branch portion Z3 between the first feeding point F1 and the second end P2 of the first radiating branch 111 under the matching of the first matching unit M1 is λ1 / 4, the first feed source 112 excites the third branch portion Z3 of the first radiating branch 111 to work in the first frequency band, and the main radiation current of the first resonant mode of the antenna assembly 1 working in the first frequency band is located in the third branch portion Z3.

[0103] That is, in some embodiments, when the main radiation current of the second resonance mode of the antenna component 1 operating in the first frequency band is located at the fourth branch portion Z4 of the second radiation branch 121, the manner in which the antenna component 1 operates in the first resonance mode of the first frequency band may be the same as the manner in which the aforementioned reference antenna component 1' operates in the first resonance mode of the first frequency band. That is, the first resonance mode of the antenna component 1 operating in the first frequency band is mainly resonated in the first frequency band through the third branch portion Z3 between the first feeding point F1 of the first radiation branch 111 and the second end P2, that is, at this time, the first resonance mode of the antenna component 1 operating in the first frequency band is mainly a quarter-wavelength mode between the first feeding point F1 of the first radiation branch 111 and the second end P2. At this time, Fig.12 As shown, the main radiation current i11 of the first resonance mode of the antenna assembly 1 operating in the first frequency band is mainly located in the third branch portion Z3 between the feeding point F1 of the first radiation branch 111 and the second end P2.

[0104] Thus, in some embodiments, when the main radiation current of the second resonance mode of the antenna component 1 operating in the first frequency band is located at the fourth branch portion Z4 of the second radiation branch 121, the main radiation current i11 of the first resonance mode of the antenna component 1 operating in the first frequency band is located at the third branch portion Z3 between the feeding point F1 of the first radiation branch 111 and the second end P2, so that they can still be located at two independent radiation branches respectively.

[0105] In some embodiments, when the main radiation current of the second resonance mode of the antenna component 1 operating in the first frequency band is located at the fourth branch portion Z4 of the second radiation branch 121, and the main radiation current i11 of the first resonance mode of the antenna component 1 operating in the first frequency band is located at the third branch portion Z3 between the feeding point F1 of the first radiation branch 111 and the second end P2, the third matching circuit M3 may also be omitted, and the preset connection point F3 may also not be grounded. For example, Fig.12 As shown, at this time, the third antenna unit 13 may include the fourth matching unit M4 and the third feed source 132, the preset connection point F3 may be connected to the third feed source 132 only through the fourth matching unit M4, and the antenna assembly 1 may operate in other frequency bands under the excitation of the third feed source 132.

[0106] In order to more clearly illustrate the current, Fig.12 Some component numbers are omitted. For more detailed diagrams, please refer to the previous Figure 1 or Figure 5 Waiting for pictures.

[0107] See also Fig.13, is another return loss curve diagram of the antenna assembly 1 in some embodiments of the present application. Among them, Fig.13 Can be Fig.12 The antenna assembly 1 shown is subjected to simulation testing and is obtained by obtaining return loss curves of the first resonant mode and the second resonant mode of the antenna assembly 1 operating in the first frequency band.

[0108] in, Fig.13 Schematically shows a return loss curve S11 - 3 of the first resonance mode of the antenna component 1 working in the first frequency band, and a return loss curve S11 - 4 of the second resonance mode of the antenna component 1 working in the first frequency band.

[0109] As mentioned above, generally speaking, the frequency corresponding to the trough of the return loss curve is the resonant frequency of the operating frequency band.

[0110] like Fig.13 As shown, at the resonant frequency of the first frequency band, the return loss of the first resonant mode of the antenna assembly 1 operating in the first frequency band is approximately -19dB, and the return loss of the second resonant mode of the antenna assembly 1 operating in the first frequency band is approximately -8dB. Compared with the return losses of the first resonant mode and the second resonant mode of the reference antenna assembly 1' operating in the first frequency band, there is no particularly significant increase.

[0111] See also Fig.14 , is another comparative schematic diagram of the isolation curves of the antenna assembly 1 in some embodiments of the present application and the reference antenna assembly 1 ′.

[0112] in, Fig.14 Schematically illustrates the isolation curve Sg2 of the first resonance mode and the second resonance mode of the antenna component 1 in some embodiments of the present application operating in the first frequency band, and the isolation curve Sg1' of the first resonance mode and the second resonance mode of the reference antenna component 1' operating in the first frequency band.

[0113] Wherein, the isolation curve Sg2 can be Fig.12 The isolation curve Sg1′ is obtained by performing simulation test on the antenna assembly 1 shown in FIG. 1 , and is obtained by performing simulation test on the antenna assembly 1 .... Figure 2 The reference antenna assembly 1 ′ shown is a simulation test result, and the reference antenna assembly 1 ′ is obtained by performing a simulation test, and the reference antenna assembly 1 ′ is an isolation curve between a first resonance mode and a second resonance mode in a first frequency band.

[0114] As mentioned above, generally speaking, the higher the amplitude corresponding to the isolation curve, the lower the isolation between the two resonant modes and the greater the interference between the two. The lower the amplitude corresponding to the isolation curve, the higher the isolation between the two resonant modes and the smaller the interference between the two.

[0115] Among them, from the isolation curve Sg1' of the first resonant mode and the second resonant mode of the reference antenna component 1' working in the first frequency band, as mentioned above, at the resonant frequency (for example Fig.14 At the 3.5 GHz frequency shown in FIG, the isolation value between the first resonant mode and the second resonant mode of the reference antenna assembly 1' operating in the first frequency band reaches -6 dB. Fig.14 As shown, from the isolation curve Sg1 of the first resonant mode and the second resonant mode of the antenna component 1 operating in the first frequency band, at the resonant frequency, the isolation value between the first resonant mode and the second resonant mode of the antenna component 1 operating in the first frequency band is approximately -15dB, which is reduced by 9dB.

[0116] It can be seen that in the present application, by making the main radiation current i11 of the first resonance mode of the antenna component 1 operating in the first frequency band be located in the third branch portion Z3 between the feeding point F1 of the first radiation branch 111 and the second end P2, and making the second resonance mode of the antenna component 1 operating in the first frequency band and the main radiation current of the second resonance mode be located in the fourth branch portion Z4 of the second radiation branch 121, compared with the reference antenna component 1' in which the main radiation currents of the two resonance modes are both in the radiation branch 111', the isolation between the two resonance modes can be effectively improved and the interference can be effectively reduced.

[0117] See also Fig.15 , is a schematic diagram of the total system efficiency curve and the radiation efficiency curve of the antenna assembly 1 in some embodiments of the present application. Among them, Fig.15 Can be Fig.12 The antenna assembly 1 shown is obtained by simulation test, and the antenna assembly 1 operates in the first resonant mode and the second resonant mode of the first frequency band, and has a total system efficiency curve and a radiation efficiency curve.

[0118] in, Fig.15 Schematically illustrates a system total efficiency curve St3 and a radiation efficiency curve Sr3 of the antenna assembly 1 operating in the first resonance mode of the first frequency band, and a system total efficiency curve St4 and a radiation efficiency curve Sr4 of the antenna assembly 1 operating in the second resonance mode of the first frequency band.

[0119] Generally speaking, the trough of the return loss curve is the peak of the system total efficiency curve and the radiation efficiency curve, and the corresponding frequency is the resonant frequency of the working frequency band.

[0120] like Fig.15 As shown, at the resonant frequency of the first frequency band, the total system efficiency of the antenna component 1 operating in the first resonant mode of the first frequency band is approximately -2dB, and the radiation efficiency is also approximately -2dB. The total system efficiency of the antenna component 1 operating in the second resonant mode of the first frequency band is approximately -3.5dB, and the radiation efficiency is approximately -3dB.

[0121] In general, the total system efficiency and radiation efficiency are generally acceptable, and are basically the same as the total system efficiency and radiation efficiency of the aforementioned reference antenna assembly 1' operating in the first resonance mode and the second resonance mode of the first frequency band, and the total system efficiency and radiation efficiency are not significantly reduced.

[0122] Thus, according to Figure 13-Figure 15 It can be seen from the correlation diagram that in the present application, by making the main radiation current i11 of the first resonance mode of the antenna component 1 operating in the first frequency band located at the third branch portion Z3 between the feeding point F1 of the first radiation branch 111 and the second end P2, and making the main radiation current of the second resonance mode of the antenna component 1 operating in the first frequency band located at the fourth branch portion Z4 of the second radiation branch 121, compared with the reference antenna component 1 in which the main radiation current is all in the radiation branch 111', the return loss, the total system efficiency and the radiation efficiency are similar, and the isolation between the two resonance modes can be effectively improved, and the interference can be effectively reduced, thereby effectively improving the antenna performance.

[0123] Wherein, in some embodiments, Figure 11-13 As shown, the first frequency band in the present application may be the N78 frequency band (3.4-3.6 GHz), and the resonant frequency is approximately located near the 3.5 GHz range.

[0124] Obviously, similarly, Figure 13-Figure 15 This is just an example taking the N78 frequency band as an example, and the first frequency band can be any other frequency band.

[0125] See also Fig.16 , are other simple structures and current distribution diagrams of the antenna assembly 1 in some embodiments of the present application.

[0126] In some embodiments, the antenna assembly 1 may include the third matching unit M3, which is used for matching and adjusting the first frequency band. The electrical length of the first branch portion Z1 between the preset connection point F3 of the third radiation branch 131 and the fifth end P5 under the matching of the third matching unit M3 is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band. The first feed source 112 excites the first radiation branch 111, and excites the first branch portion Z1 through coupling of the first radiation branch 111 to at least work in the first frequency band, such as Fig.16 As shown, the main radiation current i11 of the first resonance mode of the antenna component 1 operating in the first frequency band is located at the first branch part Z1.

[0127] That is, in some embodiments, the third matching unit M3 is also used for matching adjustment of the first frequency band, and the electrical length of the first branch section Z1 between the third feeding point F3 and the fifth end P5 of the third radiating branch section 131 under the matching of the third matching unit M3 is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, at this time, the first branch section Z1 can resonate well in the first frequency band, and the first radiating branch section 111 of the first antenna unit 11 will couple and excite the first branch section Z1 of the third radiating branch section 131 to resonate in the first frequency band under the excitation of the first feed source 112. The main radiation current of the first resonant mode of the antenna assembly 1 operating in the first frequency band is located in the first branch section Z1.

[0128] like Fig.16 As shown, further speaking, the first resonant mode of the antenna component 1 operating in the first frequency band can be a ring mode from the first feeding point F1 of the first radiating branch 111 to the preset connection point F3 of the third radiating branch 131 and through the third matching unit M3 to the ground. At this time, the first resonant mode of the antenna component 1 operating in the first frequency band is mainly a quarter-wavelength mode of the first branch portion Z1 between the preset connection point F3 of the third radiating branch 131 and the fifth end P5, and there is a small amount of unidirectional current i12 between the first feeding point F1 of the first radiating branch 111 and the second end P2. Therefore, the main radiation current i11 of the first resonant mode of the antenna component 1 operating in the first frequency band is located in the first branch portion Z1.

[0129] Among them, Fig.16As shown, in some embodiments, when the antenna component 1 operates in the first resonant mode of the first frequency band, the electrical length of the fourth branch portion Z4 between the second feeding point F2 and the third end P3 of the second radiating branch 121 under the matching of the second matching unit M2 is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, and the second feed source 122 excites the fourth branch portion Z4 of the second radiating branch 121 to operate at least in the first frequency band, and the main radiation current of the second resonant mode of the antenna component 1 operating in the first frequency band is located at the fourth branch portion Z4.

[0130] That is, in some embodiments, the main radiation current i11 of the first resonance mode of the antenna component 1 operating in the first frequency band is located in the first branch portion Z1 of the third radiation branch 131, and the main radiation current i21 of the second resonance mode of the antenna component 1 operating in the first frequency band is located in the fourth branch portion Z4 of the second radiation branch 121.

[0131] Further, Fig.16 In the antenna assembly 1 shown, relative to the reference antenna assembly 1', Figure 5 The improvements shown and Fig.12 Improvements shown.

[0132] The antenna assembly 1 operates in the first resonant mode in the first frequency band. Figure 5 For more specific information, the main radiation current of the second resonance mode of the antenna assembly 1 operating in the first frequency band is located at the fourth branch portion Z4 of the second radiation branch 121, please refer to the aforementioned Fig.12 Related content.

[0133] The antenna assembly 1 can also operate in the first resonant mode of the first frequency band in the aforementioned manner. Figure 7 In this way, that is, the preset connection point F3 is directly grounded without the third matching unit M3, the main radiation current i11 of the first resonance mode of the antenna component 1 operating in the first frequency band can be located in the first branch part Z1 of the third radiation branch 131.

[0134] In order to more clearly illustrate the current, Fig.16 Some component numbers are also omitted. For more detailed diagrams, please refer to the previous Figure 1 or Figure 5 .

[0135] See also Fig.17 , is another return loss curve diagram of the antenna assembly 1 in some embodiments of the present application. Among them, Fig.17 Can be Fig.16The antenna assembly 1 shown is subjected to simulation testing and is obtained by obtaining return loss curves of the first resonant mode and the second resonant mode of the antenna assembly 1 operating in the first frequency band.

[0136] in, Fig.17 Schematically shows a return loss curve S11 - 5 of the first resonance mode of the antenna component 1 operating in the first frequency band, and a return loss curve S11 - 6 of the second resonance mode of the antenna component 1 operating in the first frequency band.

[0137] As mentioned above, generally speaking, the frequency corresponding to the trough of the return loss curve is the resonant frequency of the operating frequency band.

[0138] like Fig.17 As shown, at the resonant frequency of the first frequency band, the return loss of the first resonant mode of the antenna assembly 1 operating in the first frequency band is approximately -9.5 dB, and the return loss of the second resonant mode of the antenna assembly 1 operating in the first frequency band is approximately -6 dB. Compared with the return losses of the first resonant mode and the second resonant mode of the reference antenna assembly 1' operating in the first frequency band, there is no particularly significant increase.

[0139] See also Fig.18 , is another schematic diagram comparing the isolation curve parameters of the antenna assembly 1 in various structures in some embodiments of the present application with the isolation curve of the reference antenna assembly 1 ′.

[0140] in, Fig.18 Schematic diagram of the isolation curves Sg1, Sg2 and Sg3 of the antenna component 1 in some embodiments of the present application in various structures when the antenna component 1 operates in the first resonant mode and the second resonant mode in the first frequency band, and the isolation curve Sg1' of the reference antenna component 1' operating in the first resonant mode and the second resonant mode in the first frequency band.

[0141] Wherein, the isolation curve Sg1 can be Figure 5 The isolation curve between the first resonant mode and the second resonant mode of the antenna assembly 1 operating in the first frequency band is obtained by performing simulation tests on the antenna assembly 1 shown in FIG. Fig.12 The isolation curve between the first resonant mode and the second resonant mode of the antenna assembly 1 in the first frequency band obtained by simulation test is as follows: Fig.16 The isolation curve Sg1′ is obtained by performing simulation test on the antenna assembly 1 shown in FIG. 1 , and is obtained by performing simulation test on the antenna assembly 1 in FIG. 1 . The isolation curve Sg1′ can be: Figure 2The reference antenna assembly 1 ′ shown is obtained by simulation test and is an isolation curve between the first resonant mode and the second resonant mode of the reference antenna assembly 1 ′ when the reference antenna assembly 1 ′ operates in the first frequency band.

[0142] As mentioned above, generally speaking, the higher the amplitude corresponding to the isolation curve, the lower the isolation between the two resonant modes and the greater the interference between the two. The lower the amplitude corresponding to the isolation curve, the higher the isolation between the two resonant modes and the smaller the interference between the two.

[0143] Among them, from the isolation curve Sg1' of the first resonant mode and the second resonant mode of the reference antenna component 1' working in the first frequency band, as mentioned above, at the resonant frequency (for example Figure 8 At the 3.5 GHz frequency shown in FIG, the isolation value between the first resonant mode and the second resonant mode of the reference antenna assembly 1' reaches -6 dB. Fig.18 As shown, and as mentioned before, Figure 5 The isolation value between the first resonant mode and the second resonant mode of the antenna assembly 1 shown in the first frequency band is approximately -11 dB, which is reduced by 6 dB. Fig.12 The isolation value between the first resonant mode and the second resonant mode of the antenna assembly 1 shown in the first frequency band is approximately -15 dB, which is reduced by 9 dB. Fig.16 The isolation value between the first resonant mode and the second resonant mode of the antenna assembly 1 shown in the first frequency band is approximately -19.6 dB, which is reduced by 13.6 dB.

[0144] It can be seen that in the present application, by making the main radiation current i11 of the first resonance mode of the antenna component 1 working in the first frequency band located at the first branch portion Z1 of the third radiation branch 131, and the main radiation current of the second resonance mode of the antenna component 1 working in the first frequency band is located at the fourth branch portion Z4 of the second radiation branch 121, compared with the reference antenna component 1' in which the main radiation currents are all in the radiation branch 111', the isolation between the two resonance modes can be effectively improved, compared with the aforementioned Figure 5 and Fig.12 This method can also further improve the isolation between the two resonant modes and further effectively reduce interference.

[0145] Among them, Figure 5 , Fig.12 as well as Fig.16 As shown in the figure, the first radiation branch 111 further includes a second grounding point G2, and the second grounding point G2 is located between the first feeding point F1 and the first grounding point G1.

[0146] In some embodiments, the second grounding point G2 can be used as a grounding position for antennas of certain frequency bands. For example, in some embodiments, one of the other frequency bands supported by the third antenna unit 13 can be achieved by the third radiating branch 131 further coupling and exciting the branch portion between the second end P2 of the first radiating branch 111 and the second grounding point G2 under the excitation of the third feed source 132.

[0147] See also Fig.19 , is another simple structural diagram of the antenna assembly 1 in some embodiments of the present application. Fig.19 As shown, the first radiation branch 111 further includes a second grounding point G2, which is located between the first feeding point F1 and the first grounding point G1, and the portion of the first radiation branch 111 between the first grounding point G1 and the second grounding point G2 is grounded.

[0148] That is, in some embodiments, a portion of the first radiation branch 111 between the first grounding point G1 and the second grounding point G2 is grounded, which can more effectively improve the isolation between the first resonance mode and the second resonance mode.

[0149] In some embodiments, when the first radiation branch 111 is used as a NFC (Near Field Communication) antenna, only the first grounding point G1 and the second grounding point G2 of the first radiation branch 111 may be grounded, and the first grounding point G1 and the second grounding point G2 of the first radiation branch 111 are grounded through capacitors, and the capacitors are used to keep the device in a suspended state, thereby meeting the requirements of the NFC antenna. Since there are two grounding points G1 and G2 that are always located between the radiation branches where the main radiation currents of the first resonant mode and the second resonant mode are located in any of the aforementioned cases, the isolation between the first resonant mode and the second resonant mode can also be increased.

[0150] When the first radiation branch 111 is not used as a NFC (Near Field communication) antenna, a portion of the first radiation branch 111 between the first grounding point G1 and the second grounding point G2 may be grounded.

[0151] In some embodiments, a plurality of grounding points may be included between the first grounding point G1 and the second grounding point G2, and each grounding point is spaced apart and grounded via a capacitor. Thus, even if the first radiation branch 111 is shared as an NFC antenna, the requirements of the NFC antenna can be met. Since there are more grounding points, the isolation between the first resonant mode and the second resonant mode can be significantly increased.

[0152] Wherein, in some embodiments, as mentioned above, the first frequency band is the N78 frequency band. In some embodiments, the first feed source 112 is used to excite the antenna assembly 1 to work in the first frequency band of the N78 frequency band, and is also used to excite the antenna assembly 1 to work in the WIFI 5G frequency band, and the second feed source 122 is used to excite the antenna assembly 1 to work in the N78 frequency band, and is also used to excite the antenna assembly 1 to work in the medium and high frequency band (MHB). Wherein, in some embodiments, when the third antenna unit 13 includes a fourth matching unit M4 and a third feed source 123, the third feed source 123 can be used to excite the antenna assembly 1 to work in the GPS L1 and WIFI-2.4G frequency bands.

[0153] Among them, Figure 1 , Figure 5 , Fig.12 as well as Fig.16 As shown in the figure, the second radiation branch 121 also includes a third grounding point G3, which is located at the fourth end P4 of the second radiation branch 121, or located near the fourth end P4 of the second radiation branch 121, for grounding. The third radiation branch 131 also includes a fourth grounding point G4, which is located at the fourth end P4 of the third radiation branch 131, or located near the fourth end P4 of the second radiation branch 12, for grounding.

[0154] In some embodiments, the second radiation branch 12 forms an inverted F antenna (IFA) through the third ground point G3 and the second feed point F2, wherein the third feed source 123 excites the antenna assembly 1 to work in the middle and high frequency band (MHB) and can be realized by the inverted F antenna. The third radiation branch 131 also forms an inverted F antenna through the fourth ground point G4 and the preset connection point F3, and the third feed source 123 excites the antenna assembly 1 to work in one of the GPS L1 and WIFI-2.4G frequency bands and can be realized by the overall inverted F antenna.

[0155] Obviously, in some embodiments, the first frequency band may also be a frequency band among low frequency, medium frequency, and medium-high frequency.

[0156] Thus, in the above-mentioned antenna assembly 1 of the present application, although the first radiating branch 111 of the first antenna unit 11 and the second radiating branch 121 of the second antenna unit 12 are adjacent to and spaced apart, and the first feed source 112 connected to the first radiating branch 111 and the second feed source 122 connected to the second radiating branch 121 both excite the antenna assembly 1 to operate in the first frequency band, the radiating branch where the main radiating current is located when the first feed source 112 excites the antenna assembly 1 to produce a first resonant mode operating in the first frequency band is different from the radiating branch where the main radiating current is located when the second feed source 122 excites the antenna assembly 1 to produce a second resonant mode operating in the first frequency band, thereby effectively increasing the isolation of the antenna assembly 1 when it operates in the first frequency band in the first resonant mode and the second resonant mode at the same time, and effectively reducing the interference between them.

[0157] See also Fig. 20 , is a schematic plan view of an electronic device 100 in some embodiments of the present application. The electronic device includes the antenna assembly 1 in any of the aforementioned embodiments.

[0158] like Fig. 20 As shown, the electronic device 100 includes a top end D11, a bottom end D12, and two side ends D13 and D14. Fig. 20 As shown, the first radiation branch 111 , the second radiation branch 121 and the third radiation branch 131 are disposed at a top D11 of the electronic device 100 .

[0159] like Figure 1 , Figure 5 , Fig.12 , Fig.16 as well as Fig. 20 As shown, the first radiating branch 111 and the second radiating branch 121 can be straight bars, and the third radiating branch 131 can be roughly L-shaped. Thus, by setting the third radiating branch 131 to be L-shaped, it can be set at the top angle position, and the three radiating branches, namely the first radiating branch 111, the second radiating branch 121 and the third radiating branch 131, can be set in the limited space of the top end D11 and be spaced apart from each other.

[0160] Obviously, in the present application, the shapes of the first radiating branch 111, the second radiating branch 121 and the third radiating branch 131 are not limited. In some embodiments, the first radiating branch 111 and the third radiating branch 131 may be long strips, and the second radiating branch may be roughly L-shaped and arranged at the vertex position.

[0161] Obviously, in some other embodiments, the first radiation branch 111 , the second radiation branch 121 and the third radiation branch 131 may also be simultaneously disposed on the bottom end D12 and any one of the two side ends D13 and D14 of the electronic device 100 .

[0162] The top end D11 and the bottom end D12 of the electronic device 100 are short side ends, and the two side ends D13 and D14 are long side ends. In some embodiments, when the first radiation branch 111, the second radiation branch 121 and the third radiation branch 131 are simultaneously arranged at one of the two side ends D13 and D14 of the electronic device 100, since the side ends D13 and D14 are long side ends and have sufficient space, the first radiation branch 111, the second radiation branch 121 and the third radiation branch 131 may also be straight strips.

[0163] Among them, the directional terms such as "top" and "bottom" used in the embodiments of the present application to describe the electronic device 100 are mainly explained based on the orientation of the electronic device 100 when the user holds it in hand. The position toward the top side of the electronic device 100 is the "top", and the position toward the bottom side of the electronic device 100 is the "bottom". It does not indicate or imply 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 orientation of the electronic device 100 in actual application scenarios. In some embodiments, the bottom end of the electronic device 100 is the end where the headphone jack and the USB port are provided, and the top of the electronic device 100 is the other end opposite to the end where the headphone jack and the USB port are provided, and may also refer to the end where a camera, a receiver, etc. are provided.

[0164] Among them, Fig. 20 As shown, the electronic device 100 includes a frame B1, and the first radiation branch node 111, the second radiation branch node 121, and the third radiation branch node 131 can be metal segments arranged on the frame B1. For example, when the first radiation branch node 111, the second radiation branch node 121, and the third radiation branch node 131 are arranged at the top D11 of the electronic device 100, the first radiation branch node 111, the second radiation branch node 121, and the third radiation branch node 131 can be arranged at the portion of the frame B1 located at the top D11 of the electronic device 100.

[0165] In some embodiments, the frame B1 may be a metal frame, and the first radiation branch 111 , the second radiation branch 121 , and the third radiation branch 131 may be metal frame segments formed by opening gaps X1 in the metal frame.

[0166] In some embodiments, the frame B1 of the electronic device 100 may also be a non-metal frame, and the first radiation branch 111, the second radiation branch 121 and the third radiation branch 131 may be metal segments arranged in the frame B1 of the electronic device 100, and they are also spaced apart from each other with gaps X1.

[0167] That is, in some embodiments, the frame B1 of the electronic device 100 may also be a non-metal frame with low conductivity such as plastic, ceramic, etc. The first radiation branch 111, the second radiation branch 121 and the third radiation branch 131 are metal segments arranged in the frame B1 of the electronic device 100, for example, metal segments attached to the inner wall of the frame B1 of the electronic device 100.

[0168] That is, in some embodiments of the present application, the first radiation branch 111 , the second radiation branch 121 , and the third radiation branch 131 may be directly formed by the frame B1 , or supported and fixed on the frame B1 .

[0169] In some embodiments, the first radiation branch 111 , the second radiation branch 121 , and the third radiation branch 131 are fixedly disposed on the antenna bracket formed of an insulating material, and then fixed in the electronic device 100 through the antenna bracket.

[0170] In some embodiments, the antenna bracket may be made of LCP (Liquid Crystal Polymer). In other embodiments, the antenna bracket may be made of other insulating materials, such as plastic, resin, rubber and the like.

[0171] In some embodiments, the first radiation branch 111, the second radiation branch 121 and the third radiation branch 131 are fixedly disposed on the antenna bracket formed of insulating material, and then fixed to corresponding positions in the electronic device 100 through the antenna bracket, for example, a position close to the top D11 of the electronic device 100.

[0172] Among them, Fig. 20 As shown, the electronic device 100 further includes a middle frame 2 , and the middle frame 2 serves as the whole ground of the electronic device 100 and provides a ground potential.

[0173] The aforementioned first grounding point G1 and other grounding points are specifically located at the middle frame 2 and connected to the ground.

[0174] like Fig. 20As shown, the electronic device 100 also includes a mainboard 3 , wherein the aforementioned first feed source 112 , the first matching unit M1 , the second feed source 122 , the second matching unit M2 , the third feed source 132 and the third matching unit M3 etc. may be specifically arranged on the mainboard 3 .

[0175] in, Fig. 20 The electronic device 100 includes Figure 1 The antenna assembly 1 shown in FIG. 1 is used as an example for illustration. Obviously, the electronic device 100 may include the antenna assembly 1 in any of the above embodiments.

[0176] Therefore, the electronic device 100 of the present application, by including the antenna assembly 1 with the above structure, can effectively increase the isolation of the antenna assembly 1 when operating in the first resonant mode and the second resonant mode simultaneously in the first frequency band, and effectively reduce the interference between them.

[0177] The electronic device 100 also includes a memory, a battery, etc., which are irrelevant to the improvement of the present application and will not be described in detail.

[0178] The electronic device 100 of the present application may be any electronic device having an antenna, such as a mobile phone, a tablet computer, a laptop computer, etc.

[0179] The electronic device 100 and its antenna assembly 1 of the present application, although the first radiating branch 111 of the first antenna unit 11 and the second radiating branch 121 of the second antenna unit 12 are adjacent to and spaced apart, and the first feed source 112 connected to the first radiating branch 111 and the second feed source 122 connected to the second radiating branch 121 both excite the antenna assembly 1 to operate in the first frequency band, the radiating branch where the main radiating current is located when the first feed source 112 excites the antenna assembly 1 to produce a first resonant mode operating in the first frequency band is different from the radiating branch where the main radiating current is located when the second feed source 122 excites the antenna assembly 1 to produce a second resonant mode operating in the first frequency band, thereby effectively increasing the isolation of the antenna assembly 1 operating in the first frequency band in the first resonant mode and the second resonant mode, and effectively reducing the interference between them.

[0180] Among them, each embodiment of the present application has its own focus. In some embodiments, there is no structure that is described in detail. If there is no conflict, reference can be made to the contents of the corresponding structure in other embodiments.

[0181] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application; in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: A first antenna unit, comprising a first radiation branch, a first matching unit and a first feed source, wherein the first radiation branch comprises a first feeding point, and the first feeding point is connected to the first feed source through the first matching unit; a second antenna unit, comprising a second radiating branch, a second matching unit and a second feed source, wherein the second radiating branch is located on one side of the first radiating branch and is coupled with the first radiating branch, and the second radiating branch comprises a second feeding point, and the second feeding point is connected to the second feed source through the second matching unit; A third antenna unit, comprising a third radiation branch, wherein the third radiation branch is located on a side of the first radiation branch away from the second radiation branch and is mutually coupled with the first radiation branch; Among them, the first feed source is used to excite the antenna component to generate a first resonant mode operating in a first frequency band, and the second feed source is used to excite the antenna component to generate a second resonant mode operating in the first frequency band, and the radiation branch where the main radiation current of the first resonant mode is located is different from the radiation branch where the main radiation current of the second resonant mode is located.

2. The antenna assembly according to claim 1, characterized in that: The main radiation current of the first resonance mode is located at the third radiation branch node, and the main radiation current of the second resonance mode is located at the first radiation branch node; Alternatively, the main radiation current of the first resonance mode is located at the first radiation branch node, and the main radiation current of the second resonance mode is located at the second radiation branch node; Alternatively, a main radiation current of the first resonance mode is located at the third radiation branch, and a main radiation current of the second resonance mode is located at the second radiation branch.

3. The antenna assembly according to claim 2, characterized in that: The first radiation branch includes a first end and a second end relative to each other, the second radiation branch includes a third end and a fourth end relative to each other, the third radiation branch includes a fifth end and a sixth end relative to each other, the first end and the second end of the first radiation branch are respectively adjacent to and spaced apart from the third end of the second radiation branch and the fifth end of the third radiation branch, and the first end, the second end of the first radiation branch, the third end of the second radiation branch and the fifth end of the third radiation branch are all open ends, the first radiation branch also includes a first grounding point, the first grounding point is located between the first feeding point and the first end, and is used for grounding; the main radiation current of the first resonant mode is located in the first branch portion between the preset connection point of the third radiation branch and the fifth end, and the main radiation current of the second resonant mode is located in the second branch portion between the first grounding point and the first end of the first radiation branch; Alternatively, the main radiation current of the first resonance mode is located in the third branch portion between the first feeding point and the second end of the first radiation branch, and the main radiation current of the second resonance mode is located in the fourth branch portion between the second feeding point and the third end of the second radiation branch; or, the main radiation current of the first resonance mode is located in the first branch portion between the preset connection point of the third radiation branch and the fifth end, and the main radiation current of the second resonance mode is located in the fourth branch portion between the second feeding point and the third end of the second radiation branch.

4. The antenna assembly according to claim 3, characterized in that: The third antenna unit also includes a third matching unit, which is connected between a preset connection point of the third radiating branch and ground, and is used for matching and adjusting the first frequency band. The electrical length of the first branch portion between the preset connection point of the third radiating branch and the fifth end under the matching of the third matching unit is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band. The first feed source excites the first radiating branch, and excites the first branch portion through coupling of the first radiating branch to operate in the first frequency band, so that the main radiation current of the first resonant mode is located in the first branch portion.

5. The antenna assembly according to claim 4, characterized in that: The third antenna unit also includes a fourth matching unit and a third feed source. The fourth matching unit is connected between the third feed source and the preset connection point. The preset connection point is the feeding point of the third radiation branch. The fourth matching unit is used for matching adjustment of other frequency bands, and the third feed source is used to excite the antenna assembly to operate in other frequency bands.

6. The antenna assembly according to claim 3, characterized in that: The preset connection point of the third radiation branch is grounded, and the electrical length of the first branch portion between the preset connection point and the fifth end is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, and the first feed source excites the first radiation branch and excites the first branch portion through coupling of the first radiation branch to operate in the first frequency band, so that the main radiation current of the first resonant mode is located in the first branch portion.

7. The antenna assembly according to claim 4 or 6, characterized in that: The electrical length of the second branch portion between the first grounding point and the first end of the first radiation branch is λ1 / 4, and the second feed source excites the second radiation branch and excites the second branch portion through coupling of the second radiation branch to operate in the first frequency band, so that the main radiation current of the second resonant mode is located in the second branch portion.

8. The antenna assembly according to claim 4 or 6, characterized in that: The electrical length of the fourth branch portion between the second feeding point and the third end of the second radiating branch under the matching of the second matching unit is λ1 / 4, and the second feed source excites the fourth branch portion of the second radiating branch to operate in the first frequency band, so that the main radiation current of the second antenna unit when operating in the first frequency band is located in the fourth branch portion.

9. The antenna assembly according to claim 3, characterized in that: The electrical length of the fourth branch portion between the second feeding point and the third end of the second radiation branch under the matching of the second matching unit is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band, and the second feed source excites the fourth branch portion of the second radiation branch to operate in the first frequency band, so that the main radiation current of the second resonant mode is located in the fourth branch portion.

10. The antenna assembly according to claim 9, characterized in that: The electrical length of the third branch portion between the first feeding point and the second end of the first radiation branch under the matching of the first matching unit is λ1 / 4, and the first feed source excites the third branch portion of the first radiation branch to operate in the first frequency band, so that the main radiation current of the first resonant mode is located in the third branch portion.

11. The antenna assembly according to claim 3, characterized in that: The first radiation branch further includes a second grounding point, which is located between the first feeding point and the first grounding point, and a portion of the first radiation branch between the first grounding point and the second grounding point is grounded.

12. The antenna assembly according to any one of claims 1 to 11, characterized in that: The first frequency band is the N78 frequency band.

13. An electronic device, characterized in that: The electronic device comprises the antenna assembly according to any one of claims 1-12.

14. The electronic device according to claim 13, characterized in that: The electronic device includes a frame, and the first radiation branch, the second radiation branch, and the third radiation branch are metal segments arranged on the frame.

15. The electronic device according to claim 14, characterized in that: The frame is a metal frame, and the first radiation branch, the second radiation branch, and the third radiation branch are metal frame segments formed by gaps in the metal frame.

16. The electronic device according to claim 14, characterized in that: The frame is a non-metal frame, and the first radiation branch, the second radiation branch, and the third radiation branch are metal segments arranged in the frame.

17. The electronic device according to claim 13, characterized in that: The first radiation branch, the second radiation branch and the third radiation branch are arranged in the electronic device through an antenna bracket.

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