Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiator, a first feed source and a second feed source; the first radiating body is of an integrated structure, the first radiating body comprises a first radiating part, a decoupling part and a second radiating part which are connected in sequence, and the first radiating part is provided with a first feeding point; the first feed source is electrically connected to the first feeding point so as to excite at least the first radiation part to support a first frequency band; the second feed source is used for exciting the second radiation part to support the first frequency band; the decoupling part comprises one or more decoupling units connected in series, each decoupling unit comprises a grounding part and a concave part connected to the grounding part, and the decoupling unit is used for isolating a signal of the first frequency band excited by the first feed source and a signal of the first frequency band excited by the second feed source. According to the antenna assembly provided by the embodiment of the invention, the decoupling structure isolates the signals of the first frequency band excited by the first feed source and the second feed source, and the isolation degree is relatively good.

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. Background Art

[0002] With the development of technology, electronic devices with communication functions such as mobile phones are becoming more and more popular and more powerful. Electronic devices usually include antenna components to realize the communication function of electronic devices. However, the antenna performance of the antenna components in electronic devices in the related art is poor. Summary of the invention

[0003] In a first aspect, the present application provides an antenna assembly, the antenna assembly comprising:

[0004] A first radiator, wherein the first radiator is an integrated structure and comprises a first radiating portion, a decoupling portion and a second radiating portion connected in sequence, and the first radiating portion has a first feeding point;

[0005] a first feed source electrically connected to the first feed point to excite at least the first radiating portion to support a first frequency band; and

[0006] A second feed source, the second feed source is used to excite the second radiating part to support the first frequency band;

[0007] Wherein, the decoupling part includes one or more decoupling units connected in series, each of the decoupling units includes a grounding part and a recessed part connected to the grounding part, and the decoupling part is used to isolate the signal of the first frequency band excited by the first feed source and the signal of the first frequency band excited by the second feed source.

[0008] In summary, the antenna assembly provided by the embodiment of the present application, the first frequency band supported by the first radiating part and the first frequency band supported by the second radiating part share the same radiating branch, however, the first radiator in the antenna assembly includes a decoupling part located between the first radiating part and the second radiating part and connected to the first radiating part and the second radiating part at both ends, thereby isolating the first radiating part and the second radiating part, thereby isolating the signal of the first frequency band excited by the first excitation signal and the signal of the first frequency band excited by the second feed source, reducing or even avoiding the coupling current generated by the second feed source from entering the first feed source, thereby improving the isolation between the first frequency band supported by the first radiating part and the first frequency band supported by the second radiating part, and improving the antenna performance of the antenna assembly in the first frequency band. In addition, the decoupling part includes one or more decoupling units connected in series, each of which includes a grounding part and a recessed part connected to the grounding part, therefore, the isolation between the first frequency band supported by the first radiating part and the first frequency band supported by the second radiating part can be further improved.

[0009] In a second aspect, the present application provides an electronic device, comprising the antenna assembly as described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 A top view of the antenna assembly provided in the first embodiment of the related art;

[0012] Figure 2 for Figure 1 A schematic diagram of current distribution when the first antenna in the antenna assembly shown in supports the first frequency band;

[0013] Figure 3 for Figure 1 A schematic diagram of current distribution when the second antenna in the antenna assembly shown in supports the first frequency band;

[0014] Figure 4 for Figure 1 The S-parameter diagram of the antenna assembly shown;

[0015] Figure 5 for Figure 1 A schematic diagram of current distribution when the second antenna in the antenna assembly shown in supports the first frequency band;

[0016] Figure 6 for Figure 1 An equivalent circuit diagram of the first antenna in the antenna assembly shown;

[0017] Figure 7 A schematic diagram of an antenna assembly provided in one embodiment of the present application;

[0018] Figure 8 for Figure 7 A schematic diagram of current distribution when the first feed source excites the first radiating part to support the first frequency band;

[0019] Fig. 9 A schematic diagram of current distribution when the second feed source excites the first frequency band;

[0020] Fig.10 for Figure 7 A schematic diagram of current distribution when the antenna assembly supports the third resonance mode;

[0021] Fig.11 for Figure 7 A schematic diagram of the dimensions of some components of the antenna assembly shown;

[0022] Fig.12 for Figure 7 A schematic diagram of current distribution when the antenna assembly supports the fourth resonance mode;

[0023] Fig.13 for Figure 7 A schematic diagram of current distribution when the antenna assembly supports the fifth resonance mode;

[0024] Fig.14 for Figure 7 The S-parameter diagram of the antenna assembly shown;

[0025] Fig.15 for Figure 7 A schematic diagram of the numbering of another dimension of the antenna assembly shown;

[0026] Fig.16 for Fig.15 An equivalent circuit diagram of the first antenna in the antenna assembly shown;

[0027] Fig.17 A schematic diagram of an antenna assembly provided in one embodiment of the present application;

[0028] Fig.18 for Fig.17 Schematic diagram of the equivalent circuit of the first antenna in the antenna assembly;

[0029] Fig.19 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0030] Fig. 20 for Fig.19 Schematic diagram of the equivalent circuit of the first antenna in the antenna assembly;

[0031] Fig.21 A schematic diagram of an antenna assembly provided in a second embodiment of the related art;

[0032] Fig. 22 for Fig.21 A schematic diagram of current distribution when the first antenna in the antenna assembly shown in supports the first frequency band;

[0033] Fig.23 for Fig.21 A schematic diagram of current distribution when the second antenna in the antenna assembly shown in supports the first frequency band;

[0034] Fig.24 A schematic diagram of an antenna assembly provided in one embodiment of the present application;

[0035] Fig.25 for Fig.24 A schematic diagram of current distribution when the first feed source excites the first radiating part to support the first frequency band;

[0036] Fig.26 A schematic diagram of current distribution when the second feed source excites the first frequency band;

[0037] Fig. 27 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0038] Fig.28 A schematic diagram of an antenna assembly provided in yet another embodiment of the present application;

[0039] Fig.29 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0040] Fig.30 for Fig.29 A schematic diagram showing the identification of some components of the antenna assembly shown in ;

[0041] Fig.31 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0042] Fig.32 for Figure 7 A schematic diagram of the identification of some components of the provided antenna assembly;

[0043] Fig.33 A three-dimensional schematic diagram of an electronic device provided in one embodiment.

[0044] Main component numbers

[0045] Electronic device 1, antenna assembly 10, ground 20, display screen 30, middle frame 50, battery cover 70;

[0046] A first antenna 11, a second antenna 12, a first radiator 110, a first feed source S1, a second feed source S2, and a second radiator 120;

[0047] A first radiating portion 111, a first feeding point P1, a decoupling portion 112, a decoupling unit 112a, a recessed portion 1121, and a grounding portion 1122;

[0048] The second radiation portion 113, the first ground end 114, the second ground end 115, the first free end 10a, the second free end 10b, the third free end 10c, the fourth free end 10d, the second radiator 120, and the second feeding point P2. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In addition, the reference to "embodiment" or "implementation method" in this article means that the specific features, structures or characteristics described in conjunction with the embodiments or implementation methods may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or state relationships based on the positions or state relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific position, or to be constructed and operated in a specific position.

[0051] In addition, some of the above terms may be used to express other meanings in addition to indicating a position or state relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0052] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different, and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more. The following will be described in detail with reference to the accompanying drawings.

[0054] Before introducing the antenna assembly 10 provided in the embodiment of the present application, the antenna assembly 10 in the related art of the antenna assembly 10 provided in the embodiment of the present application is first introduced. It can be understood that the antenna assembly 10 in the related art is the antenna assembly 10 before the improvement of the embodiment of the present application, and is not the antenna assembly 10 in the prior art. In other words, Figure 1 The antenna assembly 10 shown in FIG should not be understood as an antenna assembly 10 in the prior art. Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 A top view of the antenna assembly provided in the first embodiment of the related art;

[0055] Figure 2 for Figure 1 A schematic diagram of current distribution when the first antenna in the antenna assembly shown in supports the first frequency band; Figure 3 for Figure 1 Schematic diagram of current distribution when the second antenna in the antenna assembly shown in supports the first frequency band; Figure 4 for Figure 1The S parameter diagram of the antenna assembly shown. The antenna assembly 10 includes a first antenna 11 and a second antenna 12, wherein the first antenna 11 includes a first radiator 110 and a first feed source S1. The second antenna 12 includes a second radiator 120 and a second feed source S2. The first radiator 110 has a first free end 10a, a first grounding end 114, a third free end 10c and a first feeding point P1. The second radiator 120 has a second free end 10b, a second feeding point P2 and a second grounding end 115. The first grounding end 114 is grounded, and the first feeding point P1 is electrically connected to the first feed source S1. The second free end 10b is arranged with a coupling slot 10e spaced from the first free end 10a, and the second radiator 120 is coupled to the first radiator 110 through the coupling slot 10e. The second feeding point P2 is electrically connected to the second feed source S2. The second grounding end 115 is grounded.

[0056] When the antenna assembly 10 is applied to an electronic device, the ground can be a middle frame in the electronic device, or a shielding member of a display screen, or a conductive battery cover, or a ground of a circuit board, etc. This is not limited in this embodiment. In the embodiment of the present application, the ground is marked as 20. The first ground terminal 114 is electrically connected to the ground 20, and the first ground terminal 114 is electrically connected to the ground 20 is marked as GND1. The second ground terminal 115 is electrically connected to the ground 20, and the second ground terminal 115 is electrically connected to the ground 20 is marked as GND2.

[0057] In this embodiment, the first antenna 11 in the antenna assembly 10 further includes a matching circuit M1, and the first feed source S1 is electrically connected to the matching circuit M1 to the first feed point P1. The matching circuit M1 is used to adjust the electrical length of the first radiator 110. Correspondingly, the second antenna 12 in the antenna assembly 10 further includes a matching circuit M2, and the second feed source S2 is electrically connected to the matching circuit M2 to the second frequency band point P2. The matching circuit M2 is used to adjust the electrical length of the second radiator 120.

[0058] See also Figure 2 , when the first antenna 11 supports the first frequency band, it is a quarter-wavelength mode from the first feed source S1 to the third free end 10c. It can be understood that in the same resonance mode, the resonant current on each radiator will change in different half-wavelength periods. In the schematic diagram of this embodiment, in the current half-wavelength period, when the first antenna 11 supports the first frequency band, the current is from the first feed source S1 to the third free end 10c; in the next half-wavelength period, when the first antenna 11 supports the first frequency band, the current is from the third free end 10c to the first feed source S1.

[0059] When the second antenna 12 supports the first frequency band, it is a quarter-wavelength mode from the first ground end 114 to the coupling slot 10e. It can be understood that in the same resonance mode, the resonant current on each radiator will change in different half-wavelength periods. In the schematic diagram of this embodiment, in the current half-wavelength period, when the second antenna 12 supports the first frequency band, the current is from the first ground end 114 to the coupling slot 10e; in the next half-wavelength period, when the second antenna 12 supports the first frequency band, the current is from the coupling slot 10e to the first ground end 114.

[0060] Accordingly, see Figure 4 ,exist Figure 4 In , the horizontal axis is frequency (Frequency), the unit is GHz; the vertical axis is S parameters (S-Parameters), the unit is dB. Among them, curve ① is a schematic diagram of the S1,1 curve of the first antenna 11 in the antenna assembly 10; curve ② is a schematic diagram of the S2,2 curve of the second antenna 12 in the antenna assembly 10; curve ③ is a schematic diagram of the isolation S1,2 curve of the first antenna 11 and the second antenna 12 in the antenna assembly 10. It can be seen from curve ① that the first antenna 11 has two resonant modes (also called working modes), namely the first resonant mode and the third resonant mode. In , the resonant frequency point of the first resonant mode is point 6, and the corresponding first frequency band is the N78 frequency band; the resonant frequency point of the third resonant mode is point 1, and the corresponding third frequency band is the GPS frequency band.

[0061] As can be seen from curve ②, the second antenna has three resonance modes (also called working modes), namely the second resonance mode, the fourth resonance mode and the fifth resonance mode. Among them, the resonance frequency of the second resonance mode is point 3, and the corresponding first frequency band is the N78 frequency band; the resonance frequency of the fourth resonance mode is point 1, and the resonance frequency of the fifth resonance mode is point 2, and the third frequency band corresponding to the fourth resonance mode and the fifth resonance mode is the middle and high frequency (Middle High Band, MHB) frequency band.

[0062] In the antenna assembly 10 provided by the related art described here, the first antenna 11 also has a third resonance mode, and the second antenna 12 also has a fourth resonance mode and a fifth resonance mode. It can be understood that the present application does not limit whether the antenna assembly 10 provided in the related art includes the third resonance mode, the fourth resonance mode and the fifth resonance mode. The above examples should not be understood as limiting the antenna assembly 10 described in the embodiments of the present application and related embodiments.

[0063] Depend on Figure 2 and Figure 3It can be seen that the first antenna 11 and the second antenna 12 both support the same frequency band, that is, both support the first frequency band, and share the first radiator 110. Therefore, the isolation between the first antenna 11 supporting the first frequency band and the second antenna 12 supporting the first frequency band is poor. For details, please refer to Figure 4 , the isolation is point 4, which is only -8.7653dB.

[0064] The specific principle is explained as follows, see Figure 5 , Figure 5 for Figure 1 Schematic diagram of current distribution when the second antenna in the antenna assembly supports the first frequency band. When the second antenna 12 supports the first frequency band, in addition to the current located from the first ground terminal 114 to the coupling slot 10e, there is also a coupling current from the first ground terminal 114 to the first radiator 110, the first feeding point P1 to the first feed source S1 (illustrated by a dotted line with an arrow in the figure). In other words, the coupling current reaches the first feed source S1, and the existence of the coupling current makes the isolation between the first antenna 11 and the second antenna 12 poor when both support the first frequency band.

[0065] The second feed source S2 generates a high voltage in the coupling slot 10e, and excites the first antenna 11 through the coupling slot 10e. For the equivalent circuit of the first antenna 11, please refer to Figure 6 . Figure 6 for Figure 1 Schematic diagram of equivalent circuit of the first antenna in the antenna assembly shown. The portion of the first radiator 110 located at the connection between the coupling slot 10e and the first ground terminal 114 connecting the first radiator 110 is equivalent to an inductor L1, the first ground terminal 114 is equivalent to a capacitor C1, the connection between the first ground terminal 114 and the first radiator 110 to the first feeding point P1 is equivalent to an inductor L2, the portion from the first feeding point P1 to the third free end 10c is equivalent to a third inductor L3, and the portion between the first feed source S1 and the first feeding point P1 is equivalent to a capacitor C2. It can be seen from the resonance mode of the second antenna 12 supporting the first frequency band that the frequency band where the equivalent resonance frequency of the inductor L1 and the capacitor C1 is located is the first frequency band. It can be seen from the resonance mode of the first antenna 11 supporting the first frequency band that the frequency band where the equivalent resonance frequency of the inductor L3 and the capacitor C3 is located is the first frequency band. And by Figure 5 and Figure 6It can be known that when the coupling current flows to the first feed source S1, it will pass through the inductor L2 (that is, it will pass through the portion between the connection point C between the first ground terminal 114 in the first radiator 110 and the first radiator 110 to the first feeding point P1). Therefore, the portion between the connection point between the first ground terminal 114 in the first radiator 110 and the first radiator 110 to the first feeding point P1 can be improved to enhance the isolation between the first antenna 11 supporting the first frequency band and the second antenna 12 supporting the first frequency band.

[0066] To sum up, when the first antenna 11 and the second antenna 12 in the antenna assembly 10 in the related technology both support the same frequency band (here the first frequency band), they will share the same radiation branch (here the first radiator 110), which will result in poor isolation between the first frequency band supported by the first antenna 11 and the first frequency band supported by the second antenna 12, thereby causing the antenna performance of the antenna assembly 10 to be poor.

[0067] Next, the antenna assembly 10 provided in the embodiment of the present application is introduced and described in detail.

[0068] The present application embodiment provides an antenna assembly 10. The antenna assembly 10 provided by the present application embodiment is described below in conjunction with the accompanying drawings. Figure 7 , Figure 8 ,and Fig. 9 , Figure 7 A schematic diagram of an antenna assembly provided in one embodiment of the present application; Figure 8 for Figure 7 A schematic diagram of current distribution when the first feed source excites the first radiating part to support the first frequency band; Fig. 9 Schematic diagram of current distribution when the second feed source excites the first frequency band. The antenna assembly 10 includes a first radiator 110, a first feed source S1 and a second feed source S2. The first radiator 110 is an integral structure, and the first radiator 110 includes a first radiating portion 111, a decoupling portion 112 and a second radiating portion 113 connected in sequence. The first radiating portion 111 has a first feeding point P1. The first feed source S1 is electrically connected to the first feeding point P1 to excite at least the first radiating portion 111 to support the first frequency band. The second feed source S2 is used to excite the second radiating portion 113 to support the first frequency band. The decoupling portion 112 is used to isolate the signal of the first frequency band excited by the first feed source S1 and the signal of the first frequency band excited by the second feed source S2.

[0069] The first radiator 110 may be a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. Fig.31 ), the first radiator 110 may be a mechanical design antenna (MDA) radiator designed using the metal of the electronic device 1 itself. For example, the first radiator 110 may be an antenna radiator designed using the middle frame 50 formed of plastic and metal of the electronic device 1. In addition, the first radiator 110 may also be a radiator of a metal frame antenna designed using a metal middle frame 50.

[0070] The first feed source S1 is electrically connected to the first feed point P1 to excite the first radiating portion 111 to support the first frequency band. Therefore, it can be seen that the excitation of the first radiating portion 111 by the first feed source S1 is direct excitation.

[0071] In this embodiment, the second feed source S2 excites the second radiating portion 113 to support the first frequency band, and the excitation method may be that the second feed source S2 indirectly excites the second radiating portion 113. In other embodiments, the second feed source S2 directly excites the second radiating portion 113, which will be described in detail later in conjunction with the embodiments.

[0072] See also Figure 8 , the first radiating portion 111 of the first radiator 110 is excited by the first feed source S1 to support the first frequency band. Fig. 9 , the second radiating portion 113 of the first radiator 110 is excited by the second feed source S2 to support the first frequency band. It can be seen that the first frequency band supported by the first radiating portion 111 and the first frequency band supported by the second radiating portion 113 share the same radiating branch (i.e., the first radiator 110). In this embodiment, a decoupling portion 112 is provided between the first radiating portion 111 and the second radiating portion 113, and the decoupling portion 112 separates the first radiating portion 111 excited by the first feed source S1 and the second radiating portion 113 excited by the second feed source S2, thereby isolating the signal of the first frequency band excited by the first excitation signal and the signal of the first frequency band excited by the second feed source S2.

[0073] It should be noted that the decoupling unit 112 is used to isolate the signal of the first frequency band excited by the first feed source S1 and the signal of the first frequency band excited by the second feed source S2, which means that the decoupling unit 112 is used to isolate the overlapping frequency bands in the frequency band excited by the first feed source S1 and the frequency band excited by the second feed source S2. In other words, the first feed source S1 excites the first preset frequency band, the second feed source excites the second preset frequency band, and the overlapping frequency band in the first preset frequency band and the second preset frequency band is the first frequency band. Therefore, the decoupling unit 112 is used to isolate the first frequency band that overlaps in the first preset frequency band and the second preset frequency band. In one embodiment, the first frequency band is a partial frequency band of the first preset frequency band. In another embodiment, the first frequency band is all frequency bands in the first preset frequency band. In one embodiment, the first frequency band is a partial frequency band of the second preset frequency band. In another embodiment, the first frequency band is all frequency bands in the second preset frequency band.

[0074] In summary, in the antenna assembly 10 provided in the embodiment of the present application, the first frequency band supported by the first radiating portion 111 and the first frequency band supported by the second radiating portion 113 share the same radiating branch (i.e., the first radiator 110). However, the first radiator 110 in the antenna assembly 10 includes a decoupling portion 112 located between the first radiating portion 111 and the second radiating portion 113 and having two ends respectively connected to the first radiating portion 111 and the second radiating portion 113, thereby isolating the first radiating portion 111 and the second radiating portion 113, thereby isolating the signal of the first frequency band excited by the first excitation signal and the signal of the first frequency band excited by the second feed source S2, reducing or even avoiding the coupling current generated by the second feed source S2 from entering the first feed source S1, thereby improving the isolation between the first frequency band supported by the first radiating portion 111 and the first frequency band supported by the second radiating portion 113, and improving the antenna performance of the antenna assembly 10 in the first frequency band.

[0075] The specific structure of the antenna assembly 10 provided in the embodiment of the present application is described in detail below. Figure 7, the first radiator 110 also includes a first grounding terminal 114 and a first free end 10a. The first grounding terminal 114 is connected to one end of the second radiating portion 113 and is grounded, and the first free end 10a is located at the other end of the second radiating portion 113. The antenna assembly 10 also includes a second radiator 120. The second radiator 120 has a second grounding terminal 115, a second feeding point P2 and a second free end 10b. The second grounding terminal 115 is grounded, the second feeding point P2 is electrically connected to the second feed source S2, the second free end 10b is arranged and coupled with the first free end 10a with a coupling slot 10e, and the second feed source S2 excites the second radiating portion 113 and the first grounding terminal 114 through the coupling slot 10e to jointly support the first frequency band. One end of the decoupling portion 112 is connected to the connection between the first grounding terminal 114 and the second radiating portion 113.

[0076] The first grounding terminal 114 may be grounded in the following ways, but not limited to: The first grounding terminal 114 may be electrically connected to the ground electrode in a way, but not limited to, direct electrical connection (such as welding), or indirect electrical connection to the ground electrode through a coaxial line, a microstrip line, a conductive spring, a conductive adhesive, etc.

[0077] The first free end 10 a is located at the other end of the second radiating portion 113 . In this embodiment, the first free end 10 a is located at an end of the second radiating portion 113 away from the decoupling portion 112 .

[0078] The second radiator 120 can be a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. When the antenna assembly 10 is applied to an electronic device 1, the second radiator 120 can be a mechanical design antenna (MDA) radiator designed using the metal insert of the electronic device 1 itself. For example, the second radiator 120 can be an antenna radiator designed using the middle frame 50 formed of plastic and metal of the electronic device 1. In addition, the second radiator 120 can also be a radiator of a metal frame antenna designed with a metal middle frame 50. The type of the second radiator 120 can be the same as that of the first radiator 110, or it can be different, and is not limited here.

[0079] The second free end 10b is arranged and coupled with the first free end 10a with a coupling gap 10e therebetween, so the second radiator 120 and the first radiator 110 are capacitively coupled through the coupling gap 10e. The so-called "capacitive coupling" means that an electric field is generated between the second radiator 120 and the first radiator 110, and the signal of the second radiator 120 can be transmitted to the first radiator 110 through the electric field, and the signal of the first radiator 110 can be transmitted to the second radiator 120 through the electric field, so that the first radiator 110 and the second radiator 120 can achieve electrical signal conduction and transmission even when they are not in direct contact or direct connection.

[0080] The second feed source S2 excites the second radiating portion 113 and the first grounding end 114 through the coupling slot 10e to jointly support the first frequency band. Specifically, the second feed source S2 generates a high voltage at the coupling slot 10e, and the high voltage excites a current on the second radiating portion 113 through the coupling slot 10e, so that the second radiating portion 113 supports the first frequency band.

[0081] In this embodiment, the antenna assembly 10 includes a first antenna 11 and a second antenna 12 . The first antenna 11 includes the first feed source S1 and the first radiator 110 . The second antenna 12 includes a second feed source S2 and a second radiator 120 .

[0082] In this embodiment, the first radiator 110 and the second radiator 120 in the antenna assembly 10 are coupled via the coupling gap 10e to form a mouth-to-mouth antenna. When the second feed source S2 is working, the second radiating portion 113 of the first radiator 110 can be utilized, thereby helping to reduce the size of the second radiator 120 and facilitating the layout of the antenna assembly 10 when applied to the electronic device 1.

[0083] One end of the decoupling portion 112 is connected to the connection between the first ground terminal 114 and the second radiating portion 113, so that the second excitation signal can better utilize the second radiating portion 113 and can well isolate the current corresponding to the first frequency band supported by the second radiating portion 113 from the current corresponding to the first frequency band supported by the first radiating portion 111.

[0084] Please continue reading Figure 7The first radiating portion 111 includes a third free end 10c away from the decoupling portion 112. The antenna assembly 10 has a first resonant mode, which is a quarter-wavelength mode from the first feed source S1 to the third free end 10c. The antenna assembly 10 has a second resonant mode, which is a quarter-wavelength mode from the first ground end 114 to the coupling slot 10e.

[0085] It should be noted that the "wavelength" of the "quarter-wavelength mode" mentioned in "the first resonant mode is a quarter-wavelength mode from the first feed source S1 to the third free end 10c" refers to the wavelength corresponding to the center frequency of the first frequency band. Figure 8 The first resonant mode is a quarter-wavelength mode from the first feed source S1 to the third free end 10c, that is, the first resonant mode is the fundamental mode from the first feed source S1 to the third free end 10c. When the first radiating portion 111 in the antenna assembly 10 supports the first frequency band, it works in the fundamental mode and has a higher radiation efficiency.

[0086] Since the first radiating portion 111 is excited by the first excitation signal and supports the first frequency band, it can be regarded that the first antenna 11 of the antenna assembly 10 supports the first frequency band. It can be understood that under the same resonant mode, the resonant current on each radiator will change in different half-wavelength periods. In the schematic diagram of this embodiment, in the current half-wavelength period, the resonant current when the first antenna 11 of the antenna assembly 10 supports the first frequency band is from the first feed source S1 to the third free end 10c; in the next half-wavelength period, the current when the first radiating portion 111 supports the first frequency band is from the third free end 10c to the first feed source S1.

[0087] It should be noted that the "wavelength" of the "quarter-wavelength mode" mentioned in "the second resonant mode is a quarter-wavelength mode from the first ground end 114 to the coupling slot 10e" refers to the wavelength corresponding to the center frequency of the first frequency band. Fig. 9 , the second resonant mode is a quarter-wavelength mode from the first ground end 114 to the coupling slot 10e, that is, the second resonant mode is a fundamental mode from the first ground end 114 to the coupling slot 10e. When the second radiating portion 113 in the antenna assembly 10 supports the first frequency band, it works in the fundamental mode and has good radiation efficiency.

[0088] Since the second radiating portion 113 is excited by the second excitation signal to support the first frequency band, it can be considered that the second antenna 12 of the antenna assembly 10 supports the first frequency band. In the schematic diagram of this embodiment, in the current half-wavelength period, when the second antenna 12 of the antenna assembly 10 supports the first frequency band, the current flows from the first ground terminal 114 to the coupling slot 10e; in the next half-wavelength period, when the second antenna 12 supports the first frequency band, the current flows from the coupling slot 10e to the first ground terminal 114.

[0089] See also Fig.10 , Fig.10 for Figure 7 The current distribution diagram when the antenna assembly supports the third resonant mode is shown. The first radiator 110 also includes a first grounding terminal 114, the first grounding terminal 114 is connected to the second radiating portion 113 at the first connection point C and is grounded, the decoupling portion 112 has a first end 112b and a second end 112c, the first end 112b is connected to the first connection point C, and the second end 112c is connected to the first radiating portion 111 at the second connection point D. The antenna assembly 10 also has a third resonant mode. The third resonant mode is a quarter-wavelength mode from the second connection point D to the third free end 10c, wherein the third resonant mode is used to support the second frequency band.

[0090] It should be noted that the "wavelength" of the "quarter-wavelength mode" mentioned in "the third resonant mode is a quarter-wavelength mode from the second connection point D to the third free end 10c" refers to the wavelength corresponding to the center frequency of the second frequency band. The third resonant mode is a quarter-wavelength mode from the second connection point D to the third free end 10c, that is, the third resonant mode is the fundamental mode from the second connection point D to the third free end 10c. The third resonant mode is excited by the first feed source S1, and therefore, it can also be said that the first antenna 11 of the antenna assembly 10 supports the third resonant mode. When the first antenna 11 of the antenna assembly 10 supports the second frequency band, it operates in the fundamental mode and has a higher radiation efficiency.

[0091] In the schematic diagram of this embodiment, in the current half-wavelength period, the current when the first antenna 11 of the antenna assembly 10 supports the second frequency band is from the second connection point D to the third free end 10c; in the next half-wavelength period, the current when the first antenna 11 supports the second frequency band is from the third free end 10c to the second connection point D.

[0092] In one embodiment, the first frequency band is the N78 frequency band, and the second frequency band is the GPS frequency band. In this case, the first antenna 11 is also called a GPS+N78 antenna.

[0093] In this implementation, the antenna assembly 10 further has a third resonance mode to support the second frequency band, so that the antenna assembly 10 can support more frequency bands and has better communication performance.

[0094] The second connection point D is located between the first feeding point P1 and the first connection point C, the second connection point D is located at the midpoint between the first feeding point P1 and the first connection point C, or the second connection point D is closer to the first connection point C.

[0095] The first grounding terminal 114 may be grounded in the following ways, but not limited to: The first grounding terminal 114 may be electrically connected to the ground electrode in a way, but not limited to, direct electrical connection (such as welding), or indirect electrical connection to the ground electrode through a coaxial line, a microstrip line, a conductive spring, a conductive adhesive, etc.

[0096] See also Fig.11 , Fig.11 for Figure 7 Schematic diagram of the dimensions of some components of the antenna assembly shown. For the convenience of description, the distance between the second connection point D and the first feeding point P1 is recorded as d1, and the distance between the second connection point D and the first connection point C is recorded as d2. The second connection point D is located at the midpoint between the feeding point and the first connection point C, or the second connection point D is closer to the first connection point C, that is, d1≤d2.

[0097] It can be seen from the previous description that the first resonant mode is a quarter-wavelength mode from the first feed source S1 to the third free end 10c; the third resonant mode is a quarter-wavelength mode from the first ground end 114 to the third free end 10c; it can be seen that when the antenna component 10 supports the first frequency band, the part from the first feeding point P1 on the first radiator 110 to the third free end 10c is used, and when the antenna component 10 supports the second frequency band, the part from the second connection point D on the first radiator 110 to the third free end 10c is used. When the distance between the first connection point C and the feeding point is constant, when d1≤d2, the larger the distance between the second connection point D and the feeding point, the more the first radiator 110 can support the first frequency band and the second frequency band with a larger frequency difference.

[0098] Please read further Fig.12 and Fig.13 , Fig.12 for Figure 7 A schematic diagram of current distribution when the antenna assembly supports the fourth resonance mode; Fig.13 for Figure 7The current distribution diagram when the antenna assembly supports the fifth resonant mode is shown. The antenna assembly 10 also has a fourth resonant mode and a fifth resonant mode. The fourth resonant mode is a quarter-wavelength mode from the second ground terminal 115 to the coupling slot 10e. The fifth resonant mode is a quarter-wavelength mode from the second feed source S2 to the coupling slot 10e, wherein the fourth resonant mode and the fifth resonant mode are used together to support the third frequency band.

[0099] It should be noted that the "wavelength" of the "quarter wavelength mode" in "the fourth resonant mode is a quarter wavelength mode from the second ground end 115 to the coupling slot 10e" refers to the wavelength corresponding to the center frequency of the third frequency band. The fourth resonant mode is a quarter wavelength mode from the second ground end 115 to the coupling slot 10e, that is, the fourth resonant mode is the fundamental mode from the second ground end 115 to the coupling slot 10e. It should be noted that the "wavelength" of the "quarter wavelength mode" in "the fifth resonant mode is a quarter wavelength mode from the second feed source S2 to the coupling slot 10e" refers to the wavelength corresponding to the center frequency of the third frequency band. The fifth resonant mode is a quarter wavelength mode from the second feed source S2 to the coupling slot 10e, that is, the fifth resonant mode is the fundamental mode from the second feed source S2 to the coupling slot 10e. The antenna assembly 10 supports the third frequency band by using the fundamental mode from the second ground terminal 115 to the coupling slot 10e and the fundamental mode from the second feed source S2 to the coupling slot 10e. Therefore, the antenna assembly 10 has an enhanced radiation efficiency in the third frequency band.

[0100] In this embodiment, the antenna assembly 10 further has a fourth resonance mode and a fifth resonance mode to support the third frequency band, so that the antenna assembly 10 can support more frequency bands and has better communication performance.

[0101] In an embodiment, the antenna component 10 has a fourth resonant mode and a fifth resonant mode to support the third frequency band, which can be regarded as the second antenna 12 supporting the third frequency band. In the schematic diagram of the embodiment, in the current half-wavelength period, when the antenna component 10 supports the fourth resonant mode, the current flows from the second grounding end 115 to the coupling slot 10e; in the next half-wavelength period, when the antenna component 10 supports the fourth resonant mode, the current flows from the coupling slot 10e to the second grounding end 115. Correspondingly, when the antenna component 10 supports the fifth resonant mode, the current flows from the second feed source S2 to the coupling slot 10e; in the next half-wavelength period, when the antenna component 10 supports the fifth resonance, the current flows from the coupling slot 10e to the second feed source S2.

[0102] In one implementation, the first frequency band is an N78 frequency band, the second frequency band is a GPS frequency band, and the third frequency band is an MHB frequency band.

[0103] See also Fig.14 , Fig.14 for Figure 7 The S parameter diagram of the antenna assembly is shown in Figure 1. Fig.14 In the figure, the horizontal axis is frequency (Frequency), the unit is GHz; the vertical axis is S parameters (S-Parameters), the unit is dB. Curve ① is a schematic diagram of the S1,1 curve of the first antenna 11 in the antenna assembly 10; curve ② is a schematic diagram of the S2,2 curve of the second antenna 12 in the antenna assembly 10; curve ③ is a schematic diagram of the isolation S1,2 curve of the first antenna 11 and the second antenna 12 in the antenna assembly 10. It can be seen from curve ① that the first antenna 11 has two resonant modes (also called working modes), namely the first resonant mode and the third resonant mode. The resonant frequency point of the first resonant mode is point 6, and the corresponding first frequency band is the N78 frequency band; the resonant frequency point of the third resonant mode is point 5, and the corresponding third frequency band is the GPS frequency band.

[0104] As can be seen from curve ②, the second antenna 12 has three resonance modes (also called working modes), namely the second resonance mode, the fourth resonance mode and the fifth resonance mode. Among them, the resonance frequency of the second resonance mode is point 3, and the corresponding first frequency band is the N78 frequency band; the resonance frequency of the fourth resonance mode is point 1, and the resonance frequency of the fifth resonance mode is point 2, and the third frequency band corresponding to the fourth resonance mode and the fifth resonance mode is the middle and high frequency (Middle High Band, MHB) frequency band.

[0105] It can be seen from curve ③ that the isolation between the first antenna 11 and the second antenna 12 in the first frequency band can be seen at point 4. The value of point 4 is (3.5, -13.172), that is, the isolation between the first antenna 11 and the second antenna 12 in the first frequency band is -13.172dB, which is relatively large.

[0106] Next, the decoupling part 112 in the antenna assembly 10 provided in each embodiment is introduced in detail. The decoupling part 112 includes one or more decoupling units 112a connected in series. In the schematic diagram of this embodiment, the decoupling part 112 includes one decoupling unit 112a as an example for illustration. In the subsequent embodiments, the decoupling part 112 includes multiple decoupling units 112a connected in series as an example for illustration. When the decoupling part 112 includes multiple decoupling units 112a connected in series, it can be equivalent to a cascade of multiple decoupling units 112a connected in series in the equivalent circuit, and multi-stage filtering can be achieved.

[0107] See also Fig.15 , Fig.15 for Figure 7 In one embodiment, the decoupling unit 112a includes a recessed portion 1121, one end of the recessed portion 1121 is electrically connected to the first radiating portion 111, and the other end of the recessed portion 1121 is electrically connected to the second radiating portion 113, and the recessed portion 1121 is used to filter the current corresponding to the first frequency band.

[0108] The recessed portion 1121 filters the current corresponding to the first frequency band, thereby reducing or even preventing the coupling current in the first frequency band supported by the second radiating portion 113 from being transmitted from the second radiating portion 113 to the first feed source S1. Therefore, the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111 is improved.

[0109] In one implementation, the recessed portion 1121 is equivalent to a filter inductor of the current corresponding to the first frequency band.

[0110] The recessed portion 1121 is equivalent to a filtering inductor for the current corresponding to the first frequency band, which can reduce or even prevent the coupling current in the first frequency band supported by the second radiating portion 113 from being transmitted from the second decoupling portion 112 to the first feed source S1. Thus, the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111 is improved.

[0111] The recessed portion 1121 satisfies at least one of the following conditions: a thickness of the recessed portion 1121 is smaller than a thickness of the first radiation portion 111 ; and a width of the recessed portion 1121 is smaller than a width of the first radiation portion 111 .

[0112] In the schematic diagram of this embodiment, the example in which the width of the recessed portion 1121 (i.e., the dimension in the direction D2 in the diagram) is smaller than the width of the first radiating portion 111 is used for illustration. It can be understood that this should not be construed as a limitation on the embodiment of the present application.

[0113] The width of the recessed portion 1121 is smaller than the width of the first radiating portion 111. In one embodiment, the recessed portion 1121 can be regarded as being thinner relative to the width of the first radiating portion 111. The recessed portion 1121 can be equivalent to an inductor, and the thinning of the width is equivalent to an increase in the inductance value (L-Loading) for the inductor. It can be seen that the width of the recessed portion 1121 is smaller than the width of the first radiating portion 111, so that the recessed portion 1121 has a larger inductance value. Therefore, the recessed portion 1121 can better reduce or even prevent the coupling current corresponding to the first frequency band supported by the second radiating portion 113 from being transmitted from the second radiating portion 113 to the first feed source S1, thereby improving the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111.

[0114] In other embodiments, the thickness of the recessed portion 1121 is less than the thickness of the first radiating portion 111. In this embodiment, the thickness of the recessed portion 1121 is less than the thickness of the first radiating portion 111, which can be regarded as the thickness of the recessed portion 1121 being thinner relative to the first radiating portion 111. The recessed portion 1121 can be equivalent to an inductor, and the thinning thickness is equivalent to an increase in the inductance value (L-Loading) for the inductor. It can be seen that the thickness of the recessed portion 1121 is less than the width of the first radiating portion 111, which can make the recessed portion 1121 have a larger inductance value. Therefore, the recessed portion 1121 can better prevent the coupling current corresponding to the first frequency band supported by the second radiating portion 113 from being transmitted from the second radiating portion 113 to the first feed source S1, thereby improving the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111.

[0115] It can be understood that in other embodiments, the recessed portion 1121 can simultaneously satisfy the following two conditions: the thickness of the recessed portion 1121 is smaller than the thickness of the first radiating portion 111 ; and the width of the recessed portion 1121 is smaller than the width of the first radiating portion 111 .

[0116] When the recessed portion 1121 can simultaneously satisfy the following two conditions: the thickness of the recessed portion 1121 is less than the thickness of the first radiating portion 111; and the width of the recessed portion 1121 is less than the width of the first radiating portion 111, the inductance value of the recessed portion 1121 can be made larger. Therefore, the recessed portion 1121 can better prevent the coupling current corresponding to the first frequency band supported by the second radiating portion 113 from being transmitted from the second radiating portion 113 to the first feed source S1, thereby improving the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111.

[0117] Please continue reading Fig.15 The decoupling unit 112a further includes a grounding portion 1122, one end of the grounding portion 1122 is grounded, and the other end is electrically connected to the other end of the recessed portion 1121, and the grounding portion 1122 is used to filter the current corresponding to the first frequency band.

[0118] The grounding portion 1122 filters the current corresponding to the first frequency band, which can reduce or even prevent the coupling current corresponding to the first frequency band supported by the second radiating portion 113 from being transmitted from the second decoupling portion 112 to the first feed source S1. Therefore, the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111 is improved.

[0119] When the decoupling unit 112a includes a recessed portion 1121 and a grounding portion 1122, the recessed portion 1121 filters the current corresponding to the first frequency band, which is referred to as the first filtering for the convenience of description; the grounding portion 1122 filters the current corresponding to the first frequency band, which is referred to as the second filtering for the convenience of description. It can be seen that the decoupling unit 112a includes the recessed portion 1121 and the grounding portion 1122, so that the decoupling unit 112a filters the coupling current corresponding to the first frequency band twice, which can better prevent the coupling current corresponding to the first frequency band supported by the second radiating portion 113 from being transmitted from the second radiating portion 113 to the first feed source S1, thereby improving the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111.

[0120] In one implementation, the grounding portion 1122 is equivalent to a filter capacitor for current corresponding to the first frequency band.

[0121] Specifically, in one embodiment, the grounding portion 1122 may be a conductive branch, such as a metal branch, etc. The grounding portion 1122 may be an integral structure with the recessed portion 1121 .

[0122] The grounding portion 1122 is equivalent to a filtering capacitor for the current corresponding to the first frequency band, and therefore can reduce or even prevent the coupling current corresponding to the first frequency band supported by the second radiating portion 113 from being transmitted from the second radiating portion 113 to the first feed source S1, thereby improving the isolation between the first frequency band supported by the second radiating portion 113 and the first frequency band supported by the first feed source S1 and the first radiating portion 111.

[0123] See also Fig.15 and Fig.16 , Fig.16 for Fig.15 The equivalent circuit diagram of the first antenna in the antenna assembly is shown. The second radiating portion 113 is equivalent to the inductor L1, the first grounding end 114 is equivalent to the capacitor C1, the recessed portion 1121 is equivalent to the inductor L4, the grounding portion 1122 is equivalent to the capacitor C3, the portion between the second end 112c and the feeding point is equivalent to the inductor L5, the portion between the feeding point and the third free end 10c in the first radiating portion 111 is equivalent to the inductor L3, and the portion between the feeding point and the feed source is equivalent to the capacitor C2. It can be seen from the second resonance mode of the first frequency band supported by the second antenna 12 that the frequency band where the equivalent resonance points of the inductor L1 and the capacitor C1 are located is the first frequency band; in other words, the inductor L1 and the capacitor C1 support the second resonance mode. It can be known from the first resonance mode of the first frequency band supported by the first antenna 11 that the frequency band where the equivalent resonance point of the capacitor C2 and the inductor L3 is located is the first frequency band; in other words, the capacitor C2 and the inductor L3 support the first resonance mode. The inductor L4 filters the current of the first frequency band corresponding to the second resonance mode, which can reduce or even prevent the coupling current corresponding to the first frequency band supported by the second radiation part 113 from being transmitted from the second radiation part 113 to the first feed source S1, thereby improving the isolation between the first frequency band supported by the second radiation part 113 and the first frequency band supported by the first feed source S1 and the first radiation part 111. Furthermore, the capacitor C3 filters the coupling current of the first frequency band corresponding to the second resonance mode, which can further prevent the coupling current corresponding to the first frequency band supported by the second radiation part 113 from being transmitted from the second radiation part 113 to the first feed source S1, thereby further improving the isolation between the first frequency band supported by the second radiation part 113 and the first frequency band supported by the first feed source S1 and the first radiation part 111.

[0124] See also Fig.17 and Fig.18 , Fig.17 A schematic diagram of an antenna assembly provided in one embodiment of the present application; Fig.18 for Fig.17The decoupling unit 112a further includes a matching circuit M3, one end of the grounding portion 1122 is electrically connected to the matching circuit M3 and the grounding portion 1122 is equivalent to a bandpass circuit of the first frequency band.

[0125] In this embodiment, the matching circuit M3 is added, and the matching circuit M3 and the grounding part 1122 form a bandpass circuit to ground of the first frequency band, which will further improve the filtering effect of the coupling current corresponding to the first frequency band, and can further reduce or even prevent the coupling current corresponding to the first frequency band supported by the second radiating part 113 from being transmitted from the second radiating part 113 to the first feed source S1. Therefore, the isolation between the first frequency band supported by the second radiating part 113 and the first frequency band supported by the first feed source S1 and the first radiating part 111 can be further improved.

[0126] See also Fig.19 and Fig. 20 , Fig.19 A schematic diagram of an antenna assembly provided in another embodiment of the present application; Fig. 20 for Fig.19 Schematic diagram of the equivalent circuit of the first antenna in the antenna assembly. Fig.17 In the figure, the decoupling part 112 includes a decoupling unit 112a as an example for illustration; Fig.19 In the figure, the decoupling part 112 includes two decoupling units 112a as an example for illustration. It can be understood that in other embodiments, the number of decoupling units 112a included in the decoupling part 112 in the antenna component 10 is greater than 2. When the decoupling part 112 in the antenna component 10 includes two or more decoupling units 112a, the filtering effect on the first frequency band will be further improved, and the coupling current corresponding to the first frequency band supported by the second radiating part 113 can be further prevented from being transmitted from the second radiating part 113 to the first feed source S1. Therefore, the isolation between the first frequency band supported by the second radiating part 113 and the first frequency band supported by the first feed source S1 and the first radiating part 111 can be further improved.

[0127] The second radiating portion 113 is equivalent to an inductor L1, and the first grounding end 114 is equivalent to a capacitor C1. The recessed portion 1121 adjacent to the decoupling unit 112a in the second radiating portion 113 (i.e., the decoupling unit 112a on the right side of the figure) is equivalent to an inductor L4, and the grounding portion 1122 adjacent to the decoupling unit 112a in the second radiating portion 113 is equivalent to a capacitor C3. The recessed portion 1121 adjacent to the decoupling unit 112a in the first radiating portion 111 (i.e., the decoupling unit 112a on the left side of the figure) is equivalent to an inductor L6, and the grounding portion 1122 adjacent to the decoupling unit in the first radiating portion 111 (i.e., the decoupling unit 112a on the left side of the figure) is equivalent to a capacitor C4. In this embodiment, the inductor L4 is equal to the inductor L6; the capacitor C4 is equal to the capacitor C3; and the matching circuit M4 is equal to the matching circuit M3. In other embodiments, the inductor L4 is approximately equal to the inductor L6; the capacitor C4 is approximately equal to the capacitor C3; and the matching circuit M4 is approximately equal to the matching circuit M3. The functions of the decoupling units 112a are the same, please refer to the previous description for details. The functions of the recessed portions 1121 in the decoupling units 112a are the same, please refer to the previous description for details. The functions of the grounding portions 1122 in the decoupling units 112a are the same, please refer to the previous description for details. The functions of the matching circuits in the decoupling units 112a are the same, please refer to the previous description for details. It can be understood that in this embodiment, the components included in each decoupling unit 112a are the same as an example for illustration, that is, they all include the recessed portion 1121, the grounding portion 1122 and the matching circuit. It can be understood that when the decoupling portion 112 in the first radiator 110 includes a plurality of (that is, greater than or equal to 2) decoupling units 112a, the components included in each decoupling unit 112a may also be different. For example, one of the decoupling units 112a includes a recessed portion 1121, and another decoupling unit 112a includes a recessed portion 1121 and a grounding portion 1122, etc. It can be understood that in the schematic diagram of this embodiment, when the decoupling unit 112 in the first radiator 110 includes a plurality of (i.e., greater than or equal to 2) decoupling units 112a, each decoupling unit 112a includes a recessed portion 1121, a grounding portion 1122, and a matching circuit. In other embodiments, when the decoupling unit 112 in the first radiator 110 includes a plurality of (i.e., greater than or equal to 2) decoupling units 112a, each decoupling unit 112a may also include a recessed portion 1121 but not a grounding portion 1122 and not a matching circuit; or, each decoupling unit 112a includes a recessed portion 1121 and a grounding portion 1122 but not a matching circuit. The antenna assembly 10 shown in the schematic diagram of this embodiment should not be understood as limiting the embodiments of the present application.The portion between the second end 112c and the first feeding point P1 is equivalent to the inductor L5, the portion between the first feeding point P1 and the third free end 10c in the first radiating portion 111 is equivalent to the inductor L3, and the portion between the first feeding point P1 and the first feed source S1 is equivalent to the capacitor C2. It can be seen from the second resonance mode of the first frequency band supported by the second antenna 12 that the frequency band where the equivalent resonance points of the inductor L1 and the capacitor C1 are located is the first frequency band; in other words, the inductor L1 and the capacitor C1 support the second resonance mode. It can be seen from the first resonance mode of the first frequency band supported by the first antenna 11 that the frequency band where the equivalent resonance points of the capacitor C2 and the inductor L3 are located is the first frequency band; in other words, the capacitor C2 and the inductor L3 support the first resonance mode. The inductor L4 filters the current of the first frequency band corresponding to the second resonance mode, which can reduce or even prevent the coupling current corresponding to the first frequency band supported by the second radiation part 113 from being transmitted from the second radiation part 113 to the first feed source S1, thereby improving the isolation between the first frequency band supported by the second radiation part 113 and the first frequency band supported by the first feed source S1 and the first radiation part 111. Furthermore, the capacitor C3 filters the coupling current of the first frequency band corresponding to the second resonance mode, which can further prevent the coupling current corresponding to the first frequency band supported by the second radiation part 113 from being transmitted from the second radiation part 113 to the first feed source S1, thereby further improving the isolation between the first frequency band supported by the second radiation part 113 and the first frequency band supported by the first feed source S1 and the first radiation part 111.

[0128] Before introducing the antenna assembly 10 provided by another embodiment of the present application, the antenna assembly 10 in the related art of the antenna assembly 10 provided by the embodiment of the present application is first introduced. It can be understood that the antenna assembly 10 in the related art is the antenna assembly 10 before the improvement of the embodiment of the present application, and is not the antenna assembly 10 in the prior art. In other words, Figure 1 The antenna assembly 10 shown in FIG should not be understood as an antenna assembly 10 in the prior art. Fig.21 , Fig. 22 and Fig.23 , Fig.21 A schematic diagram of an antenna assembly provided in a second embodiment of the related art;

[0129] Fig. 22 for Fig.21 A schematic diagram of current distribution when the first antenna in the antenna assembly shown in supports the first frequency band; Fig.23 for Fig.21Schematic diagram of current distribution when the second antenna in the antenna assembly supports the first frequency band. The antenna assembly 10 includes a first antenna 11 and a second antenna 12, wherein the first antenna 11 includes a first radiating portion 111 of a first radiator 110, a second radiator 120 and a first feed source S1. The second antenna 12 includes a second radiating portion 113 of the first radiator 110 and a second feed source S2. The first radiator 110 includes the first radiating portion 111 and the second radiating portion 113 which are integrally structured and connected. The first radiating portion 111 has a first free end 10a, and the second radiating portion 113 has a second free end 10b. The first radiating portion 111 is coupled to the second radiator 120 through a coupling gap 10e. The first radiating portion 111 has a first feeding point P1, which is electrically connected to the first feed source S1. The second radiating portion 113 has a second feeding point P2, which is electrically connected to the second feed source S2. The first radiator 110 has a ground terminal (labeled GND1 in the figure), and the ground terminal GND1 is located between the first radiating portion 111 and the second radiating portion 113. In other words, the first antenna 11 and the second antenna 12 share the ground terminal, and the first radiating portion 111 and the second radiating portion 113 are an integral structure and connected, so the first radiator 110 and the second radiating portion 113 can be regarded as a common branch structure. Fig. 22 As shown, when the first antenna 11 supports the first frequency band, it is a co-phase current mode of a mouth-to-mouth antenna. Fig.23 As shown, when the second antenna 12 supports the first frequency band, it is a three-quarter wavelength mode from the ground end GND1 to the second free end 10b of the second radiating portion 113. It can be seen that when the first antenna 11 supports the first frequency band and the second antenna 12 supports the first frequency band, a same-frequency current is formed on the first radiator 110, that is, a common-branch same-frequency current is formed. Therefore, there is a serious isolation problem between the first frequency band supported by the first antenna 11 and the first frequency band supported by the second antenna 12. In other words, the isolation between the first frequency band supported by the first antenna 11 and the first frequency band supported by the second antenna 12 is poor.

[0130] The present application also provides an antenna assembly 10. The antenna assembly 10 provided in the present application is described in detail below in conjunction with the accompanying drawings. Fig.24 , Fig.25 ,and Fig.26 , Fig.24 A schematic diagram of an antenna assembly provided in one embodiment of the present application; Fig.25 for Fig.24 A schematic diagram of current distribution when the first feed source excites the first radiating part to support the first frequency band; Fig.26Schematic diagram of current distribution when the second feed source excites the first frequency band. The antenna assembly 10 includes a first radiator 110, a first feed source S1 and a second feed source S2. The first radiator 110 is an integral structure, and the first radiator 110 includes a first radiating portion 111, a decoupling portion 112 and a second radiating portion 113 connected in sequence. The first radiating portion 111 has a first feeding point P1. The first feed source S1 is electrically connected to the first feeding point P1 to excite at least the first radiating portion 111 to support the first frequency band. The second feed source S2 is used to excite the second radiating portion 113 to support the first frequency band. The decoupling portion 112 is used to isolate the signal of the first frequency band excited by the first feed source S1 and the signal of the first frequency band excited by the second feed source S2.

[0131] In this embodiment, the first feed source S1 is electrically connected to the first feeding point P1 to excite the first radiating portion 111 to support the first frequency band. Therefore, it can be seen that the excitation of the first radiating portion 111 by the first feed source S1 is direct excitation.

[0132] In this embodiment, the second feed source S2 also directly excites the second radiating portion 113. The specific description is as follows. The first radiator 110 also includes a first grounding terminal 114, a second grounding terminal 115, a first free end 10a and a second free end 10b, the first grounding terminal 114 is electrically connected to an end of the first radiating portion 111 close to the decoupling portion 112, and the first grounding terminal 114 is grounded. The second grounding terminal 115 is electrically connected to an end of the second radiating portion 113 close to the decoupling portion 112, and the second grounding terminal 115 is grounded. The second radiating portion 113 has a second feeding point P2, and the second feeding point P2 is electrically connected to the second feed source S2. The antenna assembly 10 also includes a second radiator 120, the second radiator 120 has a third free end 10c and a fourth free end 10d arranged in opposite directions, and the third free end 10c is arranged and coupled with the first free end 10a with a coupling gap 10e therebetween. The antenna assembly 10 has a first resonance mode supporting the first frequency band, the first resonance mode is a unidirectional current mode from the first ground terminal 114 to the fourth free terminal 10d. The antenna assembly 10 also has a second resonance mode supporting the first frequency band, the second resonance mode is a three-quarter wavelength mode from the second ground terminal 115 to the second free terminal 10b.

[0133] In the antenna assembly 10 provided in the embodiment of the present application, the first feed source S1 excites at least the first radiating part 111 to support the first frequency band, including the first feed source S1 introduced in the previous embodiment to excite the first radiating part 111 to support the first frequency band; and also includes the first feed source S1 introduced in this embodiment to excite the first radiating part 111 and the second radiator 120 to jointly support the first frequency band.

[0134] In this embodiment, the third free end 10c is arranged and coupled to the first free end 10a with a coupling gap 10e therebetween. In other words, the first radiator 110 and the second radiator 120 are coupled via the coupling gap 10e.

[0135] Please also read Fig.24 and Fig.25 In this embodiment, the antenna assembly 10 includes a first antenna 11 and a second antenna 12, and the first antenna 11 includes the first feed source S1, the first radiating portion 111 of the first radiator 110, and the second radiator 120. The second antenna 12 includes a second feed source S2 and a second radiating portion 113 of the first radiator 110. It can be understood that in the same resonant mode, the resonant current on each radiator will change in different half-wavelength periods. In the schematic diagram of this embodiment, in the current half-wavelength period, when the first antenna 11 supports the first frequency band, it resonates in the first resonant mode, and the corresponding current flows from the first ground terminal 114 to the fourth free end 10d; in the next half-wavelength period, when the first antenna 11 supports the first frequency band, the current flows from the fourth free end 10d to the first ground terminal 114.

[0136] See also Fig.24 and Fig.26 In the current half-wavelength period, when the second antenna 12 supports the first frequency band, it resonates in the second resonant mode, and the corresponding current flows from the second ground terminal 115 to the second free end 10b; in the next half-wavelength period, when the second antenna 12 supports the second frequency band, the current flows from the second free end 10b to the second ground terminal 115.

[0137] In the antenna assembly 10 provided in this embodiment, the first feed source S1 and the second feed source S2 both have currents supporting the same frequency band on the first radiator 110, forming a common branch (i.e., sharing the first radiator 110) of the same frequency current. Therefore, if the decoupling part 112 is not added to the antenna assembly 10, the first frequency band supported by the first radiating part 111 and the first frequency band supported by the second radiating part 113 have a relatively serious isolation problem. In the antenna assembly 10 provided in the embodiment of the present application, a decoupling part 112 is provided between the first radiating part 111 and the second radiating part 113, and the decoupling part 112 isolates the first radiating part 111 from the second radiating part 113, thereby isolating the signal of the first frequency band excited by the first excitation signal and the signal of the first frequency band excited by the second feed source S2, thereby improving the isolation between the first frequency band supported by the first radiating part 111 and the first frequency band supported by the second radiating part 113, and improving the antenna performance of the antenna assembly 10 in the first frequency band.

[0138] In one embodiment, the first frequency band is the B41 frequency band. In the antenna assembly 10 provided in the embodiment of the present application, the first frequency band may be the N78 frequency band, or the first frequency band may be other frequency bands, such as the B41 frequency band, so the application range of the antenna assembly 10 is relatively wide. In addition, using the antenna assembly 10 provided in the embodiment of the present application, the frequency band to be decoupled may also be any important frequency band, such as the low frequency band (LowBand, LB), WiFi2.4G frequency band, etc.

[0139] The antenna assembly 10 shown in this embodiment is a lower antenna solution, and each radiator (first radiator 110 and second radiator 120) in the antenna assembly 10 can be, but is not limited to, formed by a computer numerical control (CNC) process. Therefore, the antenna assembly 10 is also called a CNC lower antenna solution. In other words, the antenna assembly 10 provided in the embodiment of the present application can also be a CNC lower antenna supporting the B41 frequency band.

[0140] It should be noted that, in the antenna assembly 10 provided in the implementation mode of the present application, the decoupling part 112 is taken as one of the examples for illustration. It can be understood that the decoupling part 112 in the antenna assembly 10 provided in the implementation mode of the present application can be the decoupling part 112 introduced in any of the previous implementation modes. For details, please refer to the introduction of the decoupling part 112 in the previous implementation modes, which will not be repeated here.

[0141] It can be understood that the decoupling portion 112 includes a recessed portion 1121, one end of the recessed portion 1121 is electrically connected to the first radiating portion 111, and the other end is electrically connected to the second radiating portion 113. The recessed portion 1121 satisfies at least one of the following conditions: the thickness of the recessed portion 1121 is less than the thickness of the first radiating portion 111; the width of the recessed portion 1121 is less than the width of the first radiating portion 111. Therefore, a groove 112b is formed between the recessed portion 1121 and the first radiating portion 111. In one embodiment, when the antenna assembly 10 is applied to the electronic device 1, the groove 112b is arranged away from the appearance surface of the electronic device 1, so that the electronic device 1 to which the antenna assembly 10 is applied has a better appearance effect. In another embodiment, when the antenna assembly 10 is applied to the electronic device 1, the groove 112b can be arranged adjacent to the appearance surface of the electronic device 1.

[0142] See also Fig. 27 and Fig.28 , Fig. 27 A schematic diagram of an antenna assembly provided in another embodiment of the present application; Fig.28 This is a schematic diagram of an antenna assembly provided in another embodiment of the present application. Fig.28 When the antenna assembly 10 is applied to the electronic device 1, when the groove 112b is disposed adjacent to the exterior surface of the electronic device 1, an insulating medium portion 112c may be disposed in the groove 112b to make the electronic device 1 have a better appearance. In addition, in other embodiments, regardless of whether the groove 112b is disposed adjacent to the exterior surface of the electronic device 1, an insulating medium may be disposed in the groove 112b to enhance the structural strength of the first radiator 110. It should be noted that in Fig. 27 In the illustrated embodiment, the insulating medium portion 112c may not be provided in the groove 112b, as long as the structural strength of the first radiator 110 meets the requirements.

[0143] In one embodiment, the first radiator 110 may be formed by a metal insert process, that is, the first radiator 110 is a metal-designed structural antenna (Mechanical Design Antenna, MDA) radiator. When the first radiator 110 is an MDA radiator, part or all of the first radiator 110 is embedded in the insulating medium portion 112c. Therefore, the first radiator 110 has good structural strength, and the electronic device 1 to which the antenna assembly 10 is applied has a good appearance.

[0144] When part or all of the first radiator 110 is embedded in the insulating medium portion 112c, the isolation between the first frequency band excited by the first feed source S1 and the first frequency band excited by the second feed source S2 will also be improved, usually by more than 1 dB.

[0145] It should be noted that, in some embodiments, the antenna assembly 10 further includes other matching circuits, for example, the antenna assembly 10 further includes at least one of a matching circuit M1 and a matching circuit M2. When the antenna assembly 10 includes the matching circuit M1, the first feed source S1 electrically connects the matching circuit M1 to the first feeding point P1. When the antenna assembly 10 includes the matching circuit M2, the second feed source S2 electrically connects the matching circuit M2 to the second feeding point P2. In addition, in some embodiments, the antenna assembly 10 further includes other matching circuits, such as a matching circuit M3, a matching circuit M4, a matching circuit M5, etc.

[0146] In addition, in the lower antenna solution described above, the antenna assembly 10 may further include a fourth matching circuit M4, which is electrically connected to the fourth free end 10d. In addition, the antenna assembly 10 may further include a switch, which is electrically connected between the first ground terminal 114 and the first feeding point P1.

[0147] In addition, in the lower antenna solution described above, when the antenna assembly 10 is applied to the electronic device 1 , the second radiator 120 may be disposed adjacent to a Universal Serial Bus (USB) interface of the electronic device 1 .

[0148] In summary, the antenna assembly 10 provided in the embodiment of the present application, by analyzing the equivalent circuit of the antenna assembly 10, a decoupling portion 112 is added to the antenna assembly 10, and the decoupling portion 112 includes a recessed portion 1121, which is equivalent to adding an equivalent inductance to realize an equivalent filtering structure for the coupling current, and realizes the same-frequency decoupling of the first frequency band supported by both the first antenna 11 and the second antenna 12. In one embodiment, the decoupling portion 112 also includes a grounding portion 1122, which is equivalent to adding an equivalent capacitor, realizing an equivalent filtering structure for the coupling current, and further realizing the same-frequency decoupling of the first frequency band supported by both the first antenna 11 and the second antenna 12.

[0149] In addition, it can be seen from the antenna assembly 10 provided in the embodiment of the present application that other modes supported by the first antenna 11 and the second antenna 12 in each antenna assembly 10 have not changed, and therefore, there is basically no impact on other frequency bands supported by the first antenna 11 and the second antenna 12.

[0150] See also Fig.29 and Fig.30 , Fig.29 A schematic diagram of an antenna assembly provided in another embodiment of the present application; Fig.30 for Fig.29 The antenna assembly 10 provided in this embodiment is schematically illustrated with the identification of some components of the antenna assembly shown in FIG. Fig. 27 The antenna assembly 10 provided in the related embodiments is basically the same as that provided in Fig. 27 The antenna assembly 10 provided in this embodiment and the introduction thereof are described in detail, and the similarities are not repeated here. Fig. 27 The difference between the antenna assembly 10 provided in the embodiment and the related embodiments is that in the antenna assembly 10 provided in the embodiment, the decoupling unit 112a of the decoupling part 112 includes not only the recessed part 1121, but also the grounding part 1122, and the recessed part 1121 is connected to the grounding part 1122. Accordingly, the second grounding terminal 115 is grounded through the grounding part 1122. In the schematic diagram of the embodiment, the grounding part 1122 is electrically connected to the matching circuit M3 to the ground as an example. It can be understood that in other embodiments, the antenna assembly 10 may not include the matching circuit M3. It can be understood that in the schematic diagram of the embodiment, the decoupling part 112 includes one decoupling unit 112a as an example. In other embodiments, the decoupling part 112 may also include a plurality of decoupling units 112a connected in series.

[0151] In this embodiment, the width of the recessed portion 1121 is smaller than the width of the first radiating portion 111. Further, the first radiating portion 111 includes a first surface 111a and a second surface 111b disposed opposite to each other. The grounding portion 1122 is connected to the first surface 111a, and the recessed portion 1121 is recessed in the second surface 111b. In other words, the recessed portion 1121 is recessed in the outer surface of the first radiating portion 111.

[0152] See also Fig.31 , Fig.31 Schematic diagram of an antenna assembly provided in another embodiment of the present application. The antenna assembly 10 provided in this embodiment is Fig.29 and Fig.30 The antenna assembly 10 shown in FIG. 1 is substantially the same as that shown in FIG. 1 , except that, in this embodiment, the antenna assembly 10 further includes an insulating filling portion 112k, and the insulating filling portion 112k at least partially fills the groove of the recessed portion 1121. It can be understood that the insulating filling portion 112k can also be wrapped around other parts of the first radiator 110, and in this case, the first radiator 110 can be regarded as an MDA radiator.

[0153] It can be understood that the recessed portion 1121 described in the schematic diagram of this embodiment, which is recessed in the second surface 111 b , can also be applied to the antenna assembly 10 provided in other embodiments.

[0154] The following further describes some details of the antenna assembly 10 provided in other embodiments of the present application. Fig.32 , Fig.32 for Figure 7 A schematic diagram of the identification of some components of the antenna assembly is provided. In this embodiment, the width of the recessed portion 1121 is less than the width of the first radiating portion 111. Further, the first radiating portion 111 includes a first surface 111a and a second surface 111b disposed opposite to each other. The grounding portion 1122 is connected to the first surface 111a, the inner surface 112f of the recessed portion 1121 is recessed in the first surface 111a, and the outer surface 112d of the recessed portion 1121 is flush with the second surface 111b.

[0155] In this embodiment, the first surface 111a is the inner surface of the first radiating portion 111, and the second surface 111b is the outer surface of the first radiating portion 111. In this embodiment, the inner surface 111f of the recessed portion 1121 is recessed in the first surface 111a, and the outer surface 112d of the recessed portion 1121 is flush with the second surface 111b; in other words, the recessed portion 1121 is thinner from the inner surface than the first radiating portion 111; the outer surface 112d of the recessed portion 1121 is flush with the outer surface of the first radiating portion 111, so that when the antenna assembly 10 is applied to the electronic device 1, if the outer surface of the first radiator 110 is used as part of the appearance surface of the electronic device 1, the electronic device 1 has a better appearance effect.

[0156] It can be understood that the inner surface 112f of the recessed portion 1121 introduced in the schematic diagram of this embodiment is recessed in the first surface 111a, and the outer surface 112d of the recessed portion 1121 is flush with the outer surface of the first radiating portion 111, which may also be applicable to the antenna assembly 10 provided in other embodiments.

[0157] The embodiment of the present application also provides an electronic device 1. The electronic device 1 includes but is not limited to a mobile phone, a telephone, a television, a tablet computer (Pad), a camera, a personal computer, a laptop computer (Personal Computer, PC), a vehicle-mounted device, a headset, a watch, a wearable device, a base station, a vehicle-mounted radar, a customer premise equipment (Customer Premise Equipment, CPE) and other devices capable of transmitting and receiving electromagnetic wave signals.

[0158] The electronic device 1 includes an antenna assembly 10 as provided in any of the above embodiments. Please refer to the above description of the antenna assembly 10, which will not be described in detail here. Fig.33 , Fig.33 1 is a three-dimensional schematic diagram of an electronic device provided in an embodiment. The electronic device 1 further includes a display screen 30, a middle frame 50 and a battery cover 70. The display screen 30 and the battery cover 70 are respectively arranged on opposite sides of the middle frame 50. The middle frame 50 and the battery cover 70 cooperate to form a receiving space. At least a portion of the antenna assembly 10 is received in the receiving space.

[0159] The electronic device 1 includes a conductive frame portion 510 , the first radiator 110 is formed on the frame portion 510 , and the electronic device 1 also includes an insulating medium portion 112 c , and the insulating medium portion 112 c covers at least a portion of the decoupling portion 112 .

[0160] In one embodiment, the conductive frame portion 510 is a part of the middle frame 50, and in other embodiments, the conductive frame portion 510 is a part of the battery cover 70. The electronic device 1 further includes an insulating medium portion 112c, and the insulating medium portion 112c covers at least a portion of the decoupling portion 112, which can make the first radiator 110 have a better structural strength, and the electronic device 1 to which the antenna assembly 10 is applied has a better appearance; on the other hand, the structural strength of the first radiator 110 can be improved; on the other hand, the isolation between the first frequency band excited by the first feed source S1 and the first frequency band excited by the second feed source S2 can also be improved.

[0161] The recessed portion 1121 in the decoupling portion 112 and at least one of the first radiating portion 111 and the second radiating portion 113 form a groove 112 b , and the insulating medium portion 112 c is filled in the groove 112 b .

[0162] In one embodiment, when the antenna assembly 10 is applied to the electronic device 1, the groove 112b is arranged away from the appearance surface of the electronic device 1, so that the electronic device 1 to which the antenna assembly 10 is applied has a better appearance. In another embodiment, when the antenna assembly 10 is applied to the electronic device 1, the groove 112b may be arranged adjacent to the appearance surface of the electronic device 1.

[0163] In addition, when the antenna assembly 10 is applied to the electronic device 1, when the groove 112b is disposed adjacent to the exterior surface of the electronic device 1, an insulating medium portion 112c may be disposed in the groove 112b, so that the electronic device 1 has a better appearance. In addition, in other embodiments, regardless of whether the groove 112b is disposed adjacent to the exterior surface of the electronic device 1, an insulating medium may be disposed in the groove 112b to enhance the structural strength of the first radiator 110. It should be noted that, in other embodiments, the insulating medium portion 112c may not be disposed in the groove 112b, as long as the structural strength of the first radiator 110 meets the requirements.

[0164] The above is part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: A first radiator, wherein the first radiator is an integrated structure and comprises a first radiating portion, a decoupling portion and a second radiating portion connected in sequence, and the first radiating portion has a first feeding point; a first feed source electrically connected to the first feed point to excite at least the first radiating portion to support a first frequency band; and A second feed source, the second feed source is used to excite the second radiating part to support the first frequency band; Wherein, the decoupling part includes one or more decoupling units connected in series, each of the decoupling units includes a grounding part and a recessed part connected to the grounding part, and the decoupling part is used to isolate the signal of the first frequency band excited by the first feed source and the signal of the first frequency band excited by the second feed source.

2. The antenna assembly according to claim 1, wherein: One end of the recessed portion is electrically connected to the first radiating portion, and the other end is electrically connected to the second radiating portion; one end of the grounding portion is grounded, and the other end is electrically connected to the other end of the recessed portion.

3. The antenna assembly according to claim 2, wherein: The recessed portion is equivalent to a filter inductor of the current corresponding to the first frequency band, and the grounded portion is equivalent to a filter capacitor of the current corresponding to the first frequency band.

4. The antenna assembly according to claim 3, characterized in that And the recessed portion satisfies at least one of the following conditions: The thickness of the recessed portion is smaller than the thickness of the first radiating portion; The width of the recessed portion is smaller than the width of the first radiating portion.

5. The antenna assembly according to claim 4, characterized in that When the width of the recessed portion is smaller than the width of the first radiating portion: the first radiating portion includes a first surface and a second surface disposed opposite to each other, the grounding portion is connected to the first surface, the inner surface of the recessed portion is recessed in the first surface, and the outer surface of the recessed portion is flush with the second surface.

6. The antenna assembly according to claim 4, wherein: When the width of the recessed portion is smaller than the width of the first radiating portion: the first radiating portion includes a first surface and a second surface arranged opposite to each other, the grounding portion is connected to the first surface, and the recessed portion is recessed in the second surface; the antenna assembly also includes an insulating filling portion, and the insulating filling portion is at least partially filled in the groove of the recessed portion.

7. The antenna assembly according to claim 3, characterized in that: The decoupling unit further includes a first matching circuit. The one end of the grounding portion is electrically connected to the first matching circuit and ground. The first matching circuit and the grounding portion are equivalent to a bandpass circuit of the first frequency band.

8. The antenna assembly according to any one of claims 1 to 7, characterized in that: The first radiator further includes a first grounding end and a first free end, the first grounding end is connected to one end of the second radiating portion and is grounded, and the first free end is located at the other end of the second radiating portion; The antenna assembly further includes a second radiator, the second radiator having a second grounding end, a second feeding point and a second free end, the second grounding end is grounded, the second feeding point is electrically connected to a second feed source, the second free end is spaced apart from the first free end by a coupling slot and coupled, and the second feed source excites the second radiating portion and the first grounding end through the coupling slot to jointly support the first frequency band; One end of the decoupling portion is connected to a connection point between the first ground end and the second radiation portion.

9. The antenna assembly according to claim 8, characterized in that: The first radiating portion includes a third free end facing away from the decoupling portion, and the antenna assembly has a first resonant mode, which is a quarter-wavelength mode from the first feed source to the third free end; The antenna assembly has a second resonance mode, and the second resonance mode is a quarter-wavelength mode from the first ground end to the coupling slot.

10. The antenna assembly according to claim 9, wherein: The first radiator also includes a first grounding end, which is connected to the second radiating portion at a first connection point and is grounded. The decoupling portion has a first end and a second end, the first end is connected to the first connection point, and the second end is connected to the first radiating portion at the second connection point. The antenna component also has a third resonant mode, which is a quarter-wavelength mode from the second connection point to the third free end, wherein the third resonant mode is used to support a second frequency band.

11. The antenna assembly according to claim 10, wherein: The second connection point is located between the first feeding point and the first connection point, the second connection point is located at a midpoint between the first feeding point and the first connection point, or the second connection point is closer to the first connection point.

12. The antenna assembly according to claim 11, wherein: The antenna assembly also has a fourth resonance mode and a fifth resonance mode, wherein the fourth resonance mode is a quarter-wavelength mode from the second ground end to the coupling slot; The fifth resonance mode is a quarter-wavelength mode from the second feed source to the coupling slot, wherein the fourth resonance mode and the fifth resonance mode are used together to support a third frequency band.

13. The antenna assembly according to claim 12, wherein: The first frequency band is the N78 frequency band, the second frequency band is the GPS frequency band, and the third frequency band is the MHB frequency band.

14. The antenna assembly according to any one of claims 1 to 7, characterized in that: The first radiator further includes a first grounding end, a second grounding end, a first free end and a second free end, the first grounding end is electrically connected to an end of the first radiating portion close to the decoupling portion, and the first grounding end is grounded; The second grounding end is electrically connected to an end of the second radiating portion close to the recessed portion, and the second grounding end is grounded; The second radiating portion has a second feeding point, and the second feeding point is electrically connected to the second feed source; The antenna assembly further includes a second radiator, the second radiator having a third free end and a fourth free end disposed opposite to each other, the third free end being spaced apart from the first free end by a coupling gap and coupled to each other; The antenna assembly has a first resonance mode supporting a first frequency band, and the first resonance mode is a unidirectional current mode from the first ground end to the fourth free end; The antenna assembly also has a second resonance mode supporting the first frequency band, and the second resonance mode is a three-quarter wavelength mode from the second ground end to the second free end.

15. The antenna assembly according to claim 14, wherein: The first frequency band is the B41 frequency band.

16. An electronic device, characterized in that: The electronic device comprises the antenna assembly as described in any one of claims 1-15.

17. The electronic device according to claim 16, characterized in that: The electronic device includes a conductive frame portion, the first radiator is formed in the frame portion, and the electronic device also includes an insulating medium portion, and the insulating medium portion covers at least a portion of the decoupling portion.

18. The electronic device according to claim 17, characterized in that: The recessed portion in the decoupling portion and at least one of the first radiation portion and the second radiation portion form a groove, and the insulating medium portion is filled in the groove.

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