Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first antenna and a circuit board. The first antenna comprises a first radiator, an adjusting circuit assembly and a first feed source. The first radiator comprises a first end, a second end and a first feeding point, and the first feeding point is located at the first end. The adjusting circuit assembly comprises a first matching circuit and a change-over switch circuit which are connected in series. The first feed source electrically connects the adjusting circuit assembly to the first feed point and is used for exciting the first radiator to support a first target frequency band, and the change-over switch circuit is used for adjusting different working frequency bands of the first target frequency band supported by the first radiator. Wherein the quarter-wavelength mode from the first end to the second end of the first radiator is used for supporting the first target frequency band, and the change-over switch circuit, the first matching circuit and the first feed source are all located on the circuit board.

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 their functions are becoming more and more powerful. Electronic devices usually include antenna components to realize the communication function of electronic devices. However, the antenna components in electronic devices in the related art require more circuit boards to set the components in the antenna components when working, which makes the assembly of the antenna components more complicated and costly. Summary of the invention

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

[0004] A first radiator, the first radiator comprising a first end, a second end and a first feeding point, the first feeding point being located at the first end;

[0005] A regulating circuit component, wherein the regulating circuit component includes a first matching circuit and a switching circuit connected in series; and

[0006] A first feed source, the first feed source electrically connecting the adjustment circuit component to the first feeding point, used to excite the first radiator to support a first target frequency band, the switching circuit is used to adjust different operating frequency bands of the first target frequency band supported by the first radiator;

[0007] The quarter-wavelength mode from the first end to the second end of the first radiator is used to support the first target frequency band, and the switching circuit, the first matching circuit and the first feed source are all located on the circuit board.

[0008] In a second aspect, the present application provides an electronic device, comprising the antenna assembly as described in the first aspect.

[0009] In summary, the antenna assembly provided in the embodiment of the present application designs the position of the first feeding point so that the first feeding point is located at the first end, and the first feed source excites the quarter-wavelength mode from the first end to the second end of the first radiator through the regulating circuit component including the first matching circuit and the switching circuit, so that the first radiator can support the first target frequency band, and the switching circuit, the first matching circuit and the first feed source are all located on the circuit board. Therefore, when the antenna assembly is assembled with other components of the electronic device to which the antenna assembly is applied, the assembly is simple, and the assembly cost and the total cost are reduced. 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 schematic diagram of an antenna assembly provided for a first embodiment of the related art;

[0012] Figure 2 A schematic diagram of an antenna assembly provided in one embodiment of the present application;

[0013] Figure 3 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0014] Figure 4 A schematic diagram of an antenna assembly provided in yet another embodiment of the present application;

[0015] Figures 5 to 12 Schematic diagrams of matching subcircuits provided in various embodiments;

[0016] Fig.13 An antenna assembly provided for a second embodiment of the related art;

[0017] Fig.14 A schematic diagram of an antenna assembly provided in yet another embodiment of the present application;

[0018] Fig.15 for Fig.14 A schematic diagram of the dimensions of a portion of a second radiator of the antenna assembly shown in ;

[0019] Fig.16 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0020] Fig.17 for Figure 2 A schematic diagram of S-parameter simulation of the first antenna in the antenna assembly shown;

[0021] Fig.18 for Fig.14 A schematic diagram of S-parameter simulation of the second antenna of the antenna assembly shown;

[0022] Fig.19 for Fig.16 A schematic diagram of S-parameter simulation of the second antenna of the antenna assembly shown;

[0023] Fig. 20A three-dimensional schematic diagram of an electronic device provided in one embodiment.

[0024] Description of main component numbers:

[0025] Electronic device 1, antenna assembly 10, first antenna 110, first radiator 111, first end 1111, second end 1112, first feeding point P1, adjustment circuit assembly 112, first endpoint 112c, second endpoint 112d, first matching circuit M1, matching subcircuit 113a, switching switch circuit SW0, switch 1121, common end 1123, connection end 1125, lumped element circuit 1126;

[0026] Circuit board 130, first circuit board 140, second circuit board 150, second antenna 120, second radiator 121, first ground terminal 1211, first free terminal 1212, second feeding point P2, second matching circuit M2, second feed source S2, third radiator 122, second ground terminal 1221, second free terminal 1222, third free terminal 1223, connection point P3, coupling gap 122a,;

[0027] Inductor L0, first inductor L1, second inductor L2, capacitor C0, first capacitor C1, second capacitor C2, first unit 113b, second unit 113c;

[0028] Middle frame 50 , frame 520 , shell 90 , display screen 70 . DETAILED DESCRIPTION

[0029] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0030] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0031] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device including one or more parts is not limited to the one or more parts listed, but optionally includes one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described function.

[0032] In order to reflect the beneficial effects of the embodiments of the present application compared to the antenna components in the related technologies (not the prior art) before improvement, before introducing the antenna components provided by the embodiments of the present application, the antenna components in the related technologies (not the prior art) before improvement of each embodiment of the present application are introduced.

[0033] See also Figure 1 , Figure 1A schematic diagram of an antenna assembly provided for a first embodiment of the related art. In the first embodiment of the related art, the antenna assembly 10 includes a first antenna 110. The first antenna 110 includes a first radiator 111, a first matching circuit M1, a first switching switch SW1, and a first feed source S1. The first radiator 111 includes a first end 1111, a second end 1112, a first connection point P0, and a first feeding point P1. The first connection point P0 is located at the first end 1111, the first feeding point P1 is located between the first end 1111 and the second end 1112, and the first feeding point P1 is spaced apart from the first connection point P0. The first switching switch SW1 is electrically connected to the first connection point P0. The first feed source S1 is electrically connected to the first matching circuit M1 to the first feeding point P1 to excite the first radiator 111 to support the first target frequency band. Among them, when the first feed source S1 excites the first radiator 111 to support the first target frequency band, the quarter-wavelength mode of the portion between the first feeding point P1 and the first connection point P0 of the first radiator 111 supports the first target frequency band. The first switching switch SW1 includes a switch and a plurality of lumped element circuits (also called antenna matching), and the first radiator 111 supports part or all of the frequency bands in the first target frequency band by controlling the switch 1121 to connect different lumped element circuits to the ground. Since the quarter-wavelength mode of the portion between the first feeding point P1 and the first connection point P0 of the first radiator 111 supports the first target frequency band, in order to better support lower frequency bands (for example, low frequency bands), the first feeding point P1 is far away from the first connection point P0. However, there are many components in the electronic device 1. In order to arrange the other components in the electronic device 1 except the antenna assembly 10, in the first embodiment of the related art, the first switching switch SW1 is located on a first circuit board 140 (referred to as A1 board), and the first matching circuit M1 and the first feed source S1 are located on a second circuit board 150 (referred to as A2 board), and the A1 board and the A2 board are arranged with a gap between them, so that other components in the electronic device 1 (such as microphones and other components) can be arranged in the gap. However, in the first embodiment of the related art, the two circuit boards A1 board and A2 board are independent of each other, and the two circuit boards need to be prepared separately. When the two circuit boards A1 board and A2 board are assembled with other components in the electronic device 1 to which the antenna assembly 10 is applied to form the electronic device 1, the A1 board and the A2 board need to be assembled separately, which is more complicated and has a higher assembly cost.

[0034] In this embodiment, the first radiator 111 of the antenna assembly 10 is taken as an example to be formed on the frame 520 of the middle frame 50 of the electronic device to which the antenna assembly 10 is applied. It can be understood that in other embodiments, the first radiator 111 can also be a radiator formed by other means, such as a printed circuit board radiator, a laser direct forming radiator, etc.

[0035] Next, the antenna assembly 10 provided in the embodiment of the present application is introduced.

[0036] See also Figure 2 , Figure 2 A schematic diagram of an antenna assembly provided in one embodiment of the present application. The antenna assembly 10 includes a first antenna 110 and a circuit board 130. The first antenna 110 includes a first radiator 111, an adjustment circuit assembly 112, and a first feed source S1. The first radiator 111 includes a first end 1111, a second end 1112, and a first feeding point P1. The first feeding point P1 is located at the first end 1111. The adjustment circuit assembly 112 includes a first matching circuit M1 and a switching circuit SW0 connected in series. The first feed source S1 electrically connects the adjustment circuit assembly 112 to the first feeding point P1, and is used to excite the first radiator 111 to support the first target frequency band. The switching circuit SW0 is used to adjust the different operating frequency bands of the first target frequency band supported by the first radiator 111. Among them, the quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111 is used to support the first target frequency band, and the switching circuit SW0, the first matching circuit M1, and the first feed source S1 are all located on the circuit board 130.

[0037] In this embodiment, the first radiator 111 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. 20), the first radiator 111 may be a mechanical design antenna (MDA) radiator designed using the metal insert of the electronic device 1 itself. For example, the first radiator 111 may be an antenna radiator designed using the middle frame formed of plastic and metal of the electronic device 1. In addition, the first radiator 111 may also be a metal frame antenna radiator designed using the metal middle frame 50. In the schematic diagram of this embodiment, the first radiator 111 is illustrated as an example of a metal frame antenna radiator designed using the metal middle frame 50 of the electronic device.

[0038] It is understandable that the present application does not specifically limit the shape, structure and material of the first radiator 111. The shapes of the first radiator 111 include but are not limited to bent, straight, L-shaped, sheet-shaped, rod-shaped, coated, thin film, etc. When the first radiator 111 is in a strip shape, the present application does not limit the extension track of the first radiator 111, so the first radiator 111 can be extended in a straight line, a curve, a multi-stage bend, etc. The first radiator 111 can be a line with uniform width on the extension track, or it can be an irregular shape with different widths such as a gradual width and a widened area.

[0039] The first radiator 111 has two ends, both of which are not grounded. In other words, the first radiator 111 is in an open circuit state at both ends, so the two ends are respectively named as the first end 1111 and the second end 1112. In the schematic diagram of this embodiment, the end on the right side of the first radiator 111 is the first end 1111, and the end on the left side of the first radiator 111 is the second end 1112. The first feeding point P1 is located at the first end 1111.

[0040] The quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111 is used to support the first target frequency band, so the entire branch of the first radiator 111 is used to support the first target frequency band.

[0041] The regulating circuit component 112 includes two terminals, namely a first terminal 112c and a second terminal 112d. The first terminal 112c of the regulating circuit component 112 is electrically connected to the first feed source S1, and the second terminal 112d of the regulating circuit component 112 is electrically connected to the first feeding point P1. The second terminal 112d of the regulating circuit component 112 can be electrically connected to the first feeding point P1 through an electrical connector (such as a conductive spring, a conductive screw, a conductive cable, or a conductive adhesive, etc.).

[0042] The regulating circuit component 112 includes a first matching circuit M1 and a switching circuit SW0 connected in series. In this embodiment, one end of the first matching circuit M1 serves as the first terminal 112c of the regulating circuit, and the other end of the first matching circuit M1 is electrically connected to one end of the switching circuit SW0, and the other end of the switching circuit SW0 serves as the second terminal 112d of the regulating circuit component 112. In the schematic diagram of this embodiment, one end of the first matching circuit M1 serves as the first terminal 112c of the regulating circuit component 112, and the other end of the switching circuit SW0 serves as the second terminal 112d of the regulating circuit component 112. It can be understood that what is shown in the schematic diagram of this embodiment should not be understood as a limitation on the embodiment of the present application.

[0043] In other embodiments, one end of the first matching circuit M1 serves as the second endpoint 112d of the regulating circuit component 112, the other end of the first matching circuit M1 is electrically connected to one end of the switching circuit SW0, and the other end of the switching circuit SW0 serves as the first endpoint 112c of the regulating circuit component 112.

[0044] The first feed source S1 is used to generate a first excitation signal, which is fed into the first radiator 111 via the first matching circuit M1, the switching circuit SW0, and the first feeding point P1, and excites the quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111 to support the first target frequency band. In other words, the quarter-wavelength mode of the entire branch of the first radiator 111 supports the first target frequency band.

[0045] The first matching circuit M1 is used to adjust a standing wave of a resonant mode (also called a resonant mode or mode) supporting the first target frequency band (i.e., to excite a resonant mode supporting the first target frequency band). In this embodiment, it can be understood that the first matching circuit M1 adjusts a standing wave of a quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111. The first matching circuit may include one or more of a capacitor, an inductor, a capacitor and an inductor in parallel, a capacitor and an inductor in series, and the like.

[0046] The switching circuit SW0 is used to adjust different operating frequency bands in the first target frequency band supported by the first radiator 111. When the switching circuit SW0 has different matching parameters, the operating frequency bands supported by the first radiator 111 are different.

[0047] In this embodiment, the first feeding point P1 is located at the first end 1111, and the first feed source S1 electrically connects the adjustment circuit component 112 to the first feeding point P1, and excites a quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111, so that the first radiator 111 supports the first target frequency band. That is, the antenna component 10 provided in the embodiment of the present application sets the position of the first feeding point P1, and creatively designs a quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111 excited by the first feed source S1, so that the first feed source S1 and the first matching circuit M1 can be set on the same circuit board 130 as the switching circuit SW0. That is, the switching circuit SW0, the first matching circuit M1 and the first feed source S1 are all located on the circuit board 130.

[0048] In summary, the antenna assembly 10 provided in the embodiment of the present application designs the position of the first feeding point P1 so that the first feeding point P1 is located at the first end 1111, and the first feed source S1 excites the quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111 through the adjustment circuit assembly 112 including the first matching circuit M1 and the switching circuit SW0, so that the first radiator 111 can support the first target frequency band, and the switching circuit SW0, the first matching circuit M1 and the first feed source S1 are all located on the circuit board 130. Therefore, when the antenna assembly 10 is assembled with other components of the electronic device 1 to which the antenna assembly 10 is applied, the assembly is simple, and the assembly cost and the total cost are reduced.

[0049] See also Figure 3 and Figure 4 , Figure 3 A schematic diagram of an antenna assembly provided in another embodiment of the present application; Figure 4A schematic diagram of an antenna assembly provided for another embodiment of the present application. The first matching circuit M1 has an input terminal 112a and an output terminal 112b. The input terminal 112a of the first matching circuit M1 is electrically connected to the first feed source S1. The switching switch circuit SW0 includes a switch 1121 and a plurality of lumped element circuits 1126. The switch 1121 includes a common terminal 1123 and a plurality of connection terminals 1125. The common terminal 1123 can be electrically connected to one of the plurality of connection terminals 1125, and the common terminal 1123 can be disconnected from the connection terminal 1125, and the common terminal 1123 is electrically connected to the output terminal 112b and one of the first feeding points P1. One end of the lumped element circuit 1126 is electrically connected to the connection terminal 1125, and different lumped element circuits 1126 are electrically connected to different connection terminals 1125, and the other end of the lumped element circuit 1126 is electrically connected to the output terminal 112b and another of the first feeding points P1. When the common end 1123 is electrically connected to different connection ends 1125 , the operating frequency bands in the first target frequency band supported by the first radiator 111 are different.

[0050] The input end 112a of the first matching circuit M1 is electrically connected to the first feed source S1 as the first terminal 112c of the regulating circuit component 112, or the input end 112a of the first matching circuit M1 is electrically connected to the first terminal 112c of the regulating circuit component 112 to the first feed source S1.

[0051] In this embodiment, the regulating circuit component 112 includes a switch 1121 and a plurality of lumped element circuits 1126 (four circuits are shown in the figure). Figure 3 In the embodiment, the switch 1121 is adjacent to the first matching circuit M1 compared to the plurality of lumped element circuits 1126. In this embodiment, the common terminal 1123 is electrically connected to the output terminal 112b. Accordingly, one end of the lumped element circuit 1126 is connected to the connection terminal 1125 of the switch 1121, and the other end of the lumped element circuit 1126 is electrically connected to the first feeding point P1.

[0052] In the schematic diagram Figure 4 In the embodiment, the plurality of lumped element circuits 1126 are taken as an example to be closer to the first matching circuit M1 than the switch 1121. In this embodiment, the common terminal 1123 is electrically connected to the first feeding point P1. Accordingly, one end of the lumped element circuit 1126 is electrically connected to the connection end 1125, and the other end of the lumped element circuit 1126 is electrically connected to the output end 112b.

[0053] In this embodiment, the matching parameters of the lumped element circuits 1126 are different. When the common end 1123 is electrically connected to different connection ends 1125 , the operating frequency bands in the first target frequency band supported by the first radiator 111 are different.

[0054] In this embodiment, the switching circuit SW0 includes a switch 1121 and a plurality of lumped element circuits 1126. When the common terminal 1123 is electrically connected to different connection terminals 1125, the first radiator 111 supports different operating frequency bands in the first target frequency band, so that when the first antenna 110 supports the first target frequency band, the different operating frequency bands of the first target frequency band supported by the first antenna 110 can be adjusted by the switching circuit SW0, so that the first antenna 110 has a better communication effect in the first target frequency band.

[0055] Please continue reading Figure 3 In the schematic diagram of this embodiment, the common terminal 1123 is electrically connected to the output terminal 112b of the first matching circuit M1. The number of the connection terminals 1125 is four, that is, the multiple connection terminals 1125 include a first connection terminal 1125 (a), a second connection terminal 1125 (b), a third connection terminal 1125 (c) and a fourth connection terminal 1125 (d). The multiple lumped element circuits 1126 include a first lumped element circuit 1126 (a), a second lumped element circuit 1126 (b), a third lumped element circuit 1126 (c) and a fourth lumped element circuit 1126 (d). One end of the first lumped element circuit 1126 (a) is electrically connected to the first connection terminal 1125 (a), and the other end is electrically connected to the first feeding point P1. One end of the second lumped element circuit 1126 (b) is electrically connected to the second connection terminal 1125 (b), and the other end is electrically connected to the first feeding point P1.

[0056] One end of the third lumped element circuit 1126 ( c ) is electrically connected to the third connection end 1125 ( c ), and the other end is electrically connected to the first feeding point P1 .

[0057] One end of the fourth lumped element circuit 1126 ( d ) is electrically connected to the fourth connection end 1125 ( d ), and the other end is electrically connected to the first feeding point P1 .

[0058] In this embodiment, the switch 1121 is a single-pole four-throw (SP4T) switch. The above specific form of the switching switch circuit SW0 of the antenna assembly 10 provided in the embodiment of the present application is simple and easy to implement, and when the first antenna 110 operates in the first target frequency band, it can achieve full coverage of each operating frequency band in the first target frequency band, so that the first antenna 110 has a better communication effect in the first target frequency band.

[0059] It is understandable that in other implementations, the switch 1121 may be selected as a single pole double throw switch (SPDT) according to the number of frequency bands actually required, and different operating frequency bands may be switched by switching different matching parameters (such as impedance) through the switch 1121. In other implementations, the switching switch circuit SW0 may not only be in the form of the existing switch 1121 and the lumped element circuit 1126, but the switching switch circuit SW0 may also use a variable capacitor according to actual needs.

[0060] Please also read Figures 5 to 12 , Figures 5 to 12 Schematic diagrams of matching sub-circuits provided for various embodiments. The first matching circuit M1 includes one or more matching sub-circuits 113a, and the matching sub-circuit 113a includes one or more of the following circuits.

[0061] exist Figure 5 In the embodiment, the matching sub-circuit 113a includes a band-pass circuit formed by connecting an inductor L0 and a capacitor C0 in series.

[0062] exist Figure 6 In the embodiment, the matching sub-circuit 113a includes a band-stop circuit formed by connecting an inductor L0 and a capacitor C0 in parallel.

[0063] exist Figure 7 In the embodiment, the matching sub-circuit 113a includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in parallel with the first capacitor C1, and the second capacitor C2 is electrically connected to a node where the inductor L0 and the first capacitor C1 are electrically connected.

[0064] exist Figure 8 In the embodiment, the matching subcircuit 113a includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in parallel with the first inductor L1, and the second inductor L2 is electrically connected to a node where the capacitor C0 and the first inductor L1 are electrically connected.

[0065] exist Fig. 9 In the embodiment, the matching subcircuit 113a includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in series with the first capacitor C1, and one end of the second capacitor C2 is electrically connected to the other end of the inductor L0 that is not connected to the first capacitor C1, and the other end of the second capacitor C2 is electrically connected to the end of the first capacitor C1 that is not connected to the inductor L0.

[0066] exist Fig.10In the embodiment, the matching subcircuit 113a includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in series with the first inductor L1, one end of the second inductor L2 is electrically connected to an end of the capacitor C0 that is not connected to the first inductor L1, and the other end of the second inductor L2 is electrically connected to an end of the first inductor L1 that is not connected to the capacitor C0.

[0067] exist Fig.11 In the embodiment, the matching subcircuit 113a includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 is connected in parallel with the first inductor L1, the second capacitor C2 is connected in parallel with the second inductor L2, and one end of the whole formed by the second capacitor C2 and the second inductor L2 in parallel is electrically connected to one end of the whole formed by the first capacitor C1 and the first inductor L1 in parallel.

[0068] exist Fig.12 In the embodiment, the matching subcircuit 113a includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 and the first inductor L1 are connected in series to form a first unit 113b. The second capacitor C2 and the second inductor L2 are connected in series to form a second unit 113c. The first unit 113b and the second unit 113c are connected in parallel.

[0069] In order to reflect the beneficial effects of another embodiment of the present application compared to the antenna assembly 10 in the related technology (not the prior art) before improvement, before introducing the antenna assembly 10 provided by the embodiment of the present application, the antenna assembly 10 in the related technology (not the prior art) before improvement of each embodiment of the present application is introduced.

[0070] See also Fig.13 , Fig.13The antenna assembly provided for the second embodiment of the related art. In the second embodiment of the related art, the antenna assembly 10 includes a first antenna 110 and a second antenna 120. The first antenna 110 includes a first radiator 111, a first matching circuit M1, a first switch SW1 and a first feed source S1. For the specific situation of the first antenna 110, please refer to the antenna assembly 10 provided in the first embodiment of the related art, which will not be repeated here. In the antenna assembly 10 provided in the second embodiment of the related art, the second antenna 120 includes a second radiator 121, a third radiator 122, a second feed source S2, a second matching circuit M2 and a second switch circuit SW2. The second radiator 121 has a first ground terminal 1211, a first free terminal 1212 and a second feeding point P2. The second ground terminal 1221 is grounded, and the second feeding point P2 is located at the first free terminal 1212. The second feed source S2 electrically connects the second matching circuit M2 to the second feeding point P2, and the second switch circuit SW2 is electrically connected to the second feeding point P2. The third radiation has a second ground end 1221 and a second free end 1222, and the second free end 1222 is spaced apart from and coupled to the first free end 1212. The second ground end 1221 is disposed adjacent to the first end 1111 of the first radiator 111, and the second ground end 1221 is grounded. In a second embodiment of the related art, the second feed source S2 generates a second excitation signal, and enables the second radiator 121 and the third radiator 122 to support a second target frequency band. The second switching switch circuit SW2 is electrically connected to the second feeding point P2, and the second radiator 121 and the third radiator 122 support different operating frequency bands of the second target frequency band through switching of the second switching switch circuit SW2.

[0071] However, in the second radiator 121 of the second antenna 120 of the antenna assembly 10 provided in the second embodiment of the related technology, only the quarter-wavelength mode of the entire branch can cover a part of the second target frequency band. Taking the second target frequency band as the MHB band as an example, only the quarter-wavelength mode of the entire branch in the second radiator 121 can cover the MB band in the MHB band. The second switching switch circuit SW2 is needed to switch between different frequency bands of the second target frequency band. For example, when the second target frequency band is the MHB band, the second switching switch circuit SW2 is needed to switch between the B1 band, the B3 band, the B39 band, the B40 band, and the B41 band.

[0072] It can be seen that the second antenna 120 of the antenna assembly 10 provided in the second embodiment of the related technology has a smaller bandwidth when supporting the second target frequency band, and a second switching circuit SW2 needs to be set, which makes the antenna assembly 10 larger in size and higher in cost.

[0073] See also Fig.14 , Fig.14 A schematic diagram of an antenna assembly provided for another embodiment of the present application. The first feeding point P1 is located at the first end 1111, and the antenna assembly 10 also includes a second antenna 120. The second antenna 120 includes a second radiator 121, a second matching circuit M2, and a second feed source S2. The second radiator 121 has a first grounding end 1211, a first free end 1212, and a second feeding point P2, the first grounding end 1211 is grounded, and the second feeding point P2 is located between the first grounding end 1211 and the first free end 1212. The second feed source S2 electrically connects the second matching circuit M2 to the second feeding point P2, and the second feed source S2 is used to excite the second radiator 121 to support the first resonant mode and the second resonant mode of the second target frequency band, the first resonant mode supports the first frequency band of the second target frequency band, and the second resonant mode supports the second frequency band of the second target frequency band, and the second feed source S2 and the second matching circuit M2 are located on the circuit board 130.

[0074] In this embodiment, the second radiator 121 can be a laser direct structuring (LDS) radiator, or a flexible printed circuit 130 (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 121 can be a mechanical design antenna (MDA) radiator designed using the metal insert of the electronic device 1 itself. For example, the second radiator 121 can be an antenna radiator designed using the middle frame formed by the plastic and metal of the electronic device 1. In addition, the second radiator 121 can also be a metal frame antenna radiator designed with a metal middle frame.

[0075] It is understandable that the present application does not specifically limit the shape, structure and material of the second radiator 121, and the shapes of the second radiator 121 include but are not limited to bent, straight, L-shaped, sheet-shaped, rod-shaped, coated, thin film, etc. When the second radiator 121 is in a strip shape, the present application does not limit the extension track of the second radiator 121, so the second radiator 121 can be extended in a straight line, a curve, a multi-stage bend, etc. The second radiator 121 can be a line with uniform width on the extension track, or it can be an irregular shape with different widths such as a gradual width and a widened area.

[0076] In this embodiment, the type of the second radiator 121 may be the same as or different from that of the first radiator 111 , and the material of the second radiator 121 may be the same as or different from that of the first radiator 111 .

[0077] The second matching circuit M2 is used to adjust the standing wave of the first resonance mode and the standing wave of the second resonance mode (i.e., to excite the working mode of the second radiator 121). The second matching circuit may include one or more of a capacitor, an inductor, a capacitor and an inductor in parallel, a capacitor and an inductor in series, and the like.

[0078] In this embodiment, the second matching circuit M2 may include one or more matching sub-circuits, and the matching sub-circuit may include Figures 5 to 12 One or more circuits.

[0079] In this embodiment, the first matching circuit M1 includes appropriate capacitors and inductors to stimulate the working mode of the first radiator 111, and correspondingly, the second matching circuit M2 includes appropriate capacitors and inductors to stimulate the working mode of the second radiator 121. At the same time, the first matching circuit M1 and the second matching circuit M2 add a bandpass circuit and / or a bandstop circuit according to actual needs to play a role in frequency selection filtering, and play a role in improving the isolation between the two feeding ports of the first feeding point P1 and the second feeding point P2. Figure 5 The circuit shown is a bandpass circuit, which can be equivalent to a capacitor for the LB frequency band and can be equivalent to an inductor for the MHB frequency band. Figure 6 The circuit shown is a band-stop circuit, which is equivalent to an inductor for the LB frequency band and equivalent to a capacitor for the MHB frequency band. Figures 7 to 10 The matching subcircuit shown in the figure shows passband and stopband characteristics in different frequency bands. Figures 5 to 10 The matching subcircuits shown are only some examples and should not be understood as limitations on the implementation methods of the present application. The matching subcircuits can also be expanded to combinations of more devices, which are not listed one by one and will not be described in detail here.

[0080] In this embodiment, in this embodiment, the second feed source S2 generates a second excitation signal. The second excitation signal is loaded to the second radiator 121 through the second feed point P2 to excite the second radiator 121 to support the second target frequency band. It can be seen that the second feed source S2 can excite the second radiator 121 to support the second target frequency band, and therefore, the second antenna 120 can support the second target frequency band. It can be seen that the first antenna 110 of the antenna assembly 10 can support the first target frequency band, and the second antenna 120 of the antenna assembly 10 can support the second target frequency band. Therefore, the antenna assembly 10 can support more target frequency bands and has a better communication effect. In addition, compared with the second embodiment of the related art in which the second feeding point P2 is located at the first free end 1212 in the antenna assembly 10, in the antenna assembly 10 provided in the present embodiment, the second feeding point P2 is located between the first ground end 1211 and the first free end 1212, that is, farther away from the first free end 1212, so that the two resonant modes (i.e., the first resonant mode and the second resonant mode) of the second radiator 121 can be excited to cover the second target frequency band, so the antenna assembly 10 has a wider bandwidth in the second target frequency band. In other words, the second feeding point P2 is located between the first ground end 1211 and the first free end 1212, the second feed source S2 excites the second radiator 121 to support the first resonant mode and the second resonant mode of the second target frequency band, the first resonant mode supports the first frequency band of the second target frequency band, and the second resonant mode supports the second frequency band of the second target frequency band, so that the second antenna 120 can support more frequency bands in the second target frequency band and have a larger bandwidth in the second target frequency band. Furthermore, the antenna assembly 10 provided in the embodiment of the present application does not need to be provided with a second switching switch circuit SW2 as in the related art, that is, an antenna switch 1121 is saved, and it can be seen that the antenna assembly 10 provided in the embodiment of the present application is small in size and low in cost. Furthermore, the second feed source S2 and the second matching circuit M2 are located on the circuit board 130, so when the antenna assembly 10 is assembled with other components used by the antenna assembly 10, the assembly is simple and the assembly cost and the total cost are reduced.

[0081] Further, please refer again to Fig.14, the second antenna 120 further includes a third radiator 122. The third radiator includes a second grounding end 1221 and a second free end 1222. The second grounding end 1221 is grounded, and the second grounding end 1221 is spaced apart from the first end 1111, the second free end 1222 is away from the first end 1111 compared to the second grounding end 1221, and the second free end 1222 is opposite to the first free end 1212 and spaced apart to form a coupling gap 122a. The third radiator 122 is used to support the third resonant mode of the second target frequency band, and the third resonant mode supports the third frequency band of the second target frequency band.

[0082] In this embodiment, the third radiator 122 can be a laser direct structuring (LDS) radiator, or a flexible printed circuit 130 (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 third radiator 122 can be a mechanical design antenna (MDA) radiator designed using the metal insert of the electronic device 1 itself. For example, the third radiator 122 can be an antenna radiator designed using the middle frame formed by plastic and metal of the electronic device 1. In addition, the third radiator 122 can also be a metal frame antenna radiator designed with a metal middle frame.

[0083] It is understandable that the present application does not specifically limit the shape, structure and material of the third radiator 122. The shapes of the third radiator 122 include but are not limited to bent, straight, L-shaped, sheet-shaped, rod-shaped, coated, thin film, etc. When the third radiator 122 is in a strip shape, the present application does not limit the extension track of the third radiator 122, so the third radiator 122 can be extended in a straight line, a curve, a multi-stage bend, etc. The third radiator 122 can be a line with uniform width on the extension track, or it can be an irregular shape with different widths such as a gradual width and a widened area.

[0084] In this embodiment, the type of the third radiator 122 may be the same as or different from that of the first radiator 111, and the material of the third radiator 122 may be the same as or different from that of the first radiator 111. Accordingly, the type of the third radiator 122 may be the same as or different from that of the second radiator 121, and the material of the third radiator 122 may be the same as or different from that of the second radiator 121.

[0085] In this embodiment, the second feed source S2 generates a second excitation signal. The second excitation signal is loaded to the second radiator 121 through the second feeding point P2 to excite the second radiator 121 to support the second target frequency band. In this embodiment, the second radiator 121 serves as the main radiator (also called the main branch) of the second antenna 120, and the third radiator 122 serves as the parasitic radiator (also called the parasitic branch) of the second antenna 120. The second free end 1222 forms a coupling gap 122a with the first free end 1212, and the third radiator 122 couples the second excitation signal of the second radiator 121 through the coupling gap 122a, and supports the third resonant mode of the second target frequency band under the excitation of the second excitation signal. It can be seen that the second antenna 120 in the antenna assembly 10 provided in this embodiment also supports the third frequency band of the second target frequency band through the third resonant mode of the third radiator 122, so that the second antenna 120 supports more frequency bands in the second target frequency band and has a larger bandwidth in the second target frequency band.

[0086] Further, the first resonance mode is a quarter-wavelength mode from the second feeding point P2 to the first grounding end 1211. The second resonance mode is a quarter-wavelength mode from the second feeding point P2 to the coupling slot 122a. The third resonance mode is a quarter-wavelength mode from the second free end 1222 of the third radiator 122 to the second grounding end 1221.

[0087] It should be noted that the "wavelength" in the quarter-wavelength mode of the first resonant mode from the second feeding point P2 to the first ground terminal 1211 refers to the wavelength corresponding to the center frequency of the first frequency band corresponding to the first resonant mode. The quarter-wavelength mode is also called the fundamental mode. When the first resonant mode of the second radiator 121 supporting the first frequency band is the quarter-wavelength mode of the second feeding point P2 to the first ground terminal 1211, that is, when the second radiator 121 supports the first frequency band, it works in the fundamental mode from the second feeding point P2 to the first ground terminal 1211. When the second radiator 121 supports the first frequency band and works in the fundamental mode from the second feeding point P2 to the first ground terminal 1211, the second antenna 120 has good radiation efficiency in the first frequency band.

[0088] Correspondingly, the "wavelength" in the quarter-wavelength mode of the second resonant mode from the second feeding point P2 to the coupling slot 122a refers to the wavelength corresponding to the center frequency of the second frequency band corresponding to the second resonant mode. The quarter-wavelength mode is also called the fundamental mode. When the second resonant mode of the second radiator 121 supports the second frequency band is a quarter-wavelength from the second feeding point P2 to the coupling slot 122a, that is, when the second radiator 121 supports the second frequency band, it works in the fundamental mode from the second feeding point P2 to the coupling slot 122a. When the second radiator 121 supports the second frequency band and works in the fundamental mode from the second feeding point P2 to the coupling slot 122a, the second antenna 120 has good radiation efficiency in the second frequency band.

[0089] The third resonance mode is the "wavelength" in the quarter-wavelength mode from the second free end 1222 of the third radiator 122 to the second ground end 1221, which refers to the wavelength corresponding to the center frequency of the third frequency band corresponding to the third resonance mode. The quarter-wavelength mode is also called the fundamental mode. When the third resonance mode is the quarter-wavelength mode from the second free end 1222 of the third radiator 122 to the second ground end 1221, that is, when the third radiator 122 supports the third frequency band, it works in the fundamental mode from the second free end 1222 to the second ground end 1221. When the third radiator 122 supports the third frequency band and works in the fundamental mode from the second free end 1222 to the second ground end 1221, the second antenna 120 has good radiation efficiency in the third frequency band. It should be noted that the third resonance mode is a quarter-wavelength mode from the second free end 1222 of the third radiator 122 to the second ground end 1221, that is, the quarter-wavelength mode from the second free end 1222 of the third radiator 122 to the second ground end 1221 is the third resonance mode. It can be seen that the entire branch of the third radiator 122 supports the third resonance mode.

[0090] For further information, see Fig.15 , Fig.15 for Fig.14 Schematic diagram of the dimensions of a portion of the second radiator of the antenna assembly shown in . The distance d1 between the second feeding point P2 and the first ground terminal 1211 satisfies: d1 = λ1 / 4, where λ1 is the wavelength corresponding to the center frequency of the first frequency band. The distance d2 between the second feeding point P2 and the coupling slot 122a satisfies: d2 = λ2 / 4, where λ2 is the wavelength corresponding to the center frequency of the second frequency band.

[0091] In the antenna assembly 10 provided in this embodiment, the distance d1 between the second feeding point P2 and the first grounding end 1211 satisfies: d1=λ1 / 4, so that the quarter-wavelength mode from the second feeding point P2 to the first grounding end 1211 can better support the first frequency band. The distance d2 between the second feeding point P2 and the coupling slot 122a satisfies: d2=λ2 / 4, so that the quarter-wavelength mode from the second feeding point P2 to the coupling slot 122a can better support the second frequency band.

[0092] The center frequency point of the first frequency band is marked as a first frequency (or called a first frequency point) f1, and the center frequency point of the second frequency band is marked as a second frequency (or called a second frequency point) f2.

[0093] The relationship between the wavelength λ and frequency f of the electromagnetic wave signal can be expressed as Among them, c is the speed of light, and ε is the relative dielectric constant of the electromagnetic wave signal in the medium. Therefore, the wavelength corresponding to the first frequency is the first wavelength λ1, which satisfies: The wavelength corresponding to the second frequency f2 is the second wavelength λ2 which satisfies: Wherein, c is the speed of light, and ε is the relative dielectric constant of the electromagnetic wave signal in the medium. Ideally, ε=1. After the first frequency and the second frequency are determined, the first wavelength and the second wavelength can be calculated, and then the position of the second feeding point P2 can be determined according to the distance between the second feeding point P2 and the first ground terminal 1211, and the distance between the second feeding point P2 and the coupling slot 122a described above.

[0094] Furthermore, the first target frequency band is a low frequency (Low Band, LB) band, and the second target frequency band is a middle high frequency (Middle High Band, MHB) band. The antenna assembly 10 can realize carrier aggregation (Carrier Aggregation, CA) of the LB band + MHB band; or, the antenna assembly 10 can realize dual connection (LTE NR Double Connect, ENDC) of the 4G wireless access network and 5G-NR of the LB band + MHB band.

[0095] In this embodiment, the antenna assembly 10 can realize CA of LB band + MHB band, or ENDC of LB band + MHB band, so that the antenna assembly 10 has good communication performance and meets the communication requirements of the electronic device 1 to which the antenna assembly 10 is applied.

[0096] See also Fig.16 , Fig.16A schematic diagram of an antenna assembly provided for another embodiment of the present application. The antenna assembly 10 includes a first antenna 110 and a circuit board 130. The first antenna 110 includes a first radiator 111, an adjustment circuit assembly 112, and a first feed source S1. The first radiator 111 includes a first end 1111, a second end 1112, and a first feeding point P1. The first feeding point P1 is located at the first end 1111. The adjustment circuit assembly 112 includes a first matching circuit M1 and a switching circuit SW0 connected in series. The first feed source S1 electrically connects the adjustment circuit assembly 112 to the first feeding point P1, and is used to excite the first radiator 111 to support the first target frequency band. The switching circuit SW0 is used to adjust the different operating frequency bands of the first target frequency band supported by the first radiator 111. Among them, the quarter-wavelength mode from the first end 1111 to the second end 1112 of the first radiator 111 is used to support the first target frequency band, and the switching circuit SW0, the first matching circuit M1, and the first feed source S1 are all located on the circuit board 130. For details about the first antenna 110 , please refer to the previous description and will not be repeated here.

[0097] In addition, the antenna assembly 10 also includes a second antenna 120. The second antenna 120 includes a second radiator 121, a second matching circuit M2, a second feed S2 and a third radiator 122. The second radiator 121 has a first grounding end 1211, a first free end 1212 and a second feeding point P2. The first grounding end 1211 is grounded, and the second feeding point P2 is located between the first grounding end 1211 and the first free end 1212. The second feed S2 electrically connects the second matching circuit M2 to the second feeding point P2, and the second feed S2 is used to excite the second radiator 121 to support a first resonant mode and a second resonant mode of a second target frequency band, the first resonant mode supports a first frequency band of the second target frequency band, and the second resonant mode supports a second frequency band of the second target frequency band, and the second feed S2 and the second matching circuit M2 are located on the circuit board 130. The third radiator 122 includes a second free end 1222, a third free end 1223 and a connection point P3, the second free end 1222 is spaced apart from the first free end 1212 and forms a coupling gap 122a, the third free end 1223 is spaced apart from the first free end 1212, and the connection point P3 is located at the third free end 1223. The switching circuit SW0 is also electrically connected to the connection point P3 to excite the third radiator 122 to support the third target frequency band.

[0098] In this embodiment, in this embodiment, the second feed source S2 generates a second excitation signal. The second excitation signal is loaded to the second radiator 121 through the second feed point P2 to excite the second radiator 121 to support the second target frequency band. It can be seen that the second feed source S2 can excite the second radiator 121 to support the second target frequency band, and therefore, the second antenna 120 can support the second target frequency band. It can be seen that the first antenna 110 of the antenna assembly 10 can support the first target frequency band, and the second antenna 120 of the antenna assembly 10 can support the second target frequency band. Therefore, the antenna assembly 10 can support more target frequency bands and has a better communication effect. In addition, the second feeding point P2 is located between the first grounding end 1211 and the first free end 1212, and the second feed source S2 excites the second radiator 121 to support the first resonant mode and the second resonant mode of the second target frequency band. The first resonant mode supports the first frequency band of the second target frequency band, and the second resonant mode supports the second frequency band of the second target frequency band. Therefore, the second antenna 120 can support more frequency bands in the second target frequency band and have a larger bandwidth in the second target frequency band. Further, the antenna assembly 10 provided in the embodiment of the present application does not need to set the second switching switch circuit SW2 as in the related art. It can be seen that the antenna assembly 10 provided in the embodiment of the present application is small in size and low in cost. Further, the second feed source S2 and the second matching circuit M2 are located on the circuit board 130. Therefore, when the antenna assembly 10 is assembled with other components used by the antenna assembly 10, the assembly is simple and the assembly cost and total cost are reduced.

[0099] In this embodiment, the input end 112a of the switching circuit SW0 is electrically connected to the first matching circuit M1, an output end 112b of the switching circuit SW0 is electrically connected to the first feeding point P1, and another output end 112b of the switching circuit SW0 is electrically connected to the connection point P3. Therefore, the switching circuit SW0 can be regarded as being simultaneously hung on the first radiator 111 and the third radiator 122. On the one hand, the switching circuit SW0 is used to adjust different operating frequency bands of the first target frequency band supported by the first radiator 111; on the other hand, the switching circuit SW0 is also used to adjust the frequency position of the third radiator 122 to stimulate the third radiator 122 to support the third target frequency band.

[0100] In one implementation, the first target frequency band is a low frequency (Lower Band, LB) frequency band, the second target frequency band is a middle high frequency (Middle High Band, MHB) frequency band, and the third target frequency band is an ultra high frequency (Ultra High Band, UHB) frequency band.

[0101] In this embodiment, the second target frequency band is the MHB frequency band, and the third radiator 122 generates a third resonance mode through the switching circuit SW0, so that the third radiator 122 supports the UHB frequency band. Therefore, the second of the antenna assembly 10 can support the MHB frequency band + UHB frequency band.

[0102] In one embodiment, the first resonance mode and the second resonance mode jointly support the B1 frequency band, the B3 frequency band, the B39 frequency band, the B40 frequency band, and the B41 frequency band of the MHB frequency band. The third resonance mode supports the N78 frequency band of the UHB frequency band.

[0103] Next, the antenna assembly 10 provided in each embodiment of the present application will be introduced in conjunction with various simulation diagrams.

[0104] See also Fig.17 , Fig.17 for Figure 2 The S parameter simulation diagram of the first antenna in the antenna assembly shown. In this simulation diagram, the horizontal axis is the frequency, the unit is GHz, and the vertical axis is the S parameter (S Parameters), the unit is dB. Among them, curve ①, curve ②, and curve ③ respectively represent the S parameter curves when the switching circuit SW0 has different matching parameters. Among them, it can be seen from any one of curve ①, curve ②, and curve ③ that the first antenna 110 of the antenna assembly 10 operates in a low frequency band (that is, in this embodiment, the first target frequency band is a low frequency band). It can be seen from curve ①, curve ②, and curve ③ that when the switching circuit SW0 has different matching parameters, the first radiator 111 of the first antenna 110 operates in different operating frequency bands in the first target frequency band (here, the low frequency band). By adjusting the different matching parameters of the switching circuit SW0, the first radiator 111 of the first antenna 110 can be switched in different operating frequency bands of the first target frequency band (here, the B28 band, the B5 band, and the B8 band). That is, the switching circuit SW0 is used to adjust different operating frequency bands of the first target frequency band supported by the first radiator 111. In this simulation diagram, curve ① is the B5 frequency band, curve ② is the B8 frequency band, and curve ③ is the B28 frequency band.

[0105] See also Fig.18 , Fig.18 for Fig.14Schematic diagram of S parameter simulation of the second antenna of the antenna assembly shown. In this simulation diagram, the horizontal axis is frequency, the unit is GHz, and the vertical axis is S parameters (S Parameters), the unit is dB. It can be seen from this simulation diagram that the S parameter curve has three depressions, and these three depressions correspond to the first resonant mode (marked as mode 1 in the figure), the second resonant mode (marked as mode 2 in the figure) and the third resonant mode (marked as mode 3 in the figure). It can be seen from this simulation diagram that the first resonant mode, the second resonant mode and the third resonant mode can support the MHB frequency band.

[0106] From the previous introduction and simulation of the antenna assembly 10 provided in the embodiment of the present application, it can be seen that the first radiator 111, the second radiator 121 and the third radiator 122 can cover the entire LB band + MHB band, and the LB band and the MHB band do not affect each other, and the CA of the LB band + MHB band and the ENDC of the LB band + MHB band can be realized.

[0107] See also Fig.19 , Fig.19 for Fig.16 Schematic diagram of S parameter simulation of the second antenna of the antenna assembly shown. In this simulation schematic diagram, the horizontal axis is frequency, the unit is GHz, and the vertical axis is S parameters (S Parameters), the unit is dB. It can be seen from the simulation diagram that the S parameter curve has three depressions, and these three depressions correspond to the first resonant mode (marked as mode 1 in the figure), the second resonant mode (marked as mode 2 in the figure) and the third resonant mode (marked as mode 3 in the figure). It can be seen in this simulation schematic diagram that the third resonant mode generated by the third radiator 122 is located in the UHB frequency band. Specifically, it can be seen in this simulation schematic diagram that the first resonant mode and the second resonant mode jointly support the B1 band, B3 band, B39 band, B40 band, and B41 band of the MHB band. The third resonant mode supports the N78 band of the UHB band.

[0108] 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. In this application, the electronic device 1 is taken as an example of a mobile phone, and other devices can refer to the specific description in this application.

[0109] 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. 20 , Fig. 20 Schematic diagram of a three-dimensional electronic device provided in one embodiment. The electronic device 1 further includes a display screen 70, a middle frame 50 and a housing 90 (also referred to as a battery cover). The display screen 70 and the housing 90 are respectively arranged on opposite sides of the middle frame 50. In one embodiment, the first radiator 111 is formed on the frame 520 of the middle frame 50.

[0110] When the antenna assembly 10 includes the second antenna 120 in addition to the first antenna 110 , and the second antenna 120 includes the second radiator 121 , the first radiator 111 and the second radiator 121 are formed on the frame 520 of the middle frame 50 .

[0111] When the antenna assembly 10 includes a second antenna 120 in addition to the first antenna 110 , and the second antenna 120 includes a second radiator 121 and a third radiator 122 , the first radiator 111 , the second radiator 121 , and the third radiator 122 are formed on the frame 520 of the middle frame 50 .

[0112] In one embodiment, the middle frame 50 and at least one of the housing 90 and the display screen 70 also form a receiving space. The electronic device 1 also includes a battery, functional devices (the functional devices may include one or more of a camera module, a microphone, a receiver, a speaker, a face recognition module, and a fingerprint recognition module) and other devices that can realize the basic functions of the mobile phone, which will not be described in detail in this embodiment. It can be understood that the above introduction to the electronic device 1 is only an explanation of an environment in which the antenna assembly 10 is applied, and the specific structure of the electronic device 1 should not be understood as a limitation on the antenna assembly 10 provided in this application.

[0113] 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 includes a first antenna and a circuit board, wherein the first antenna includes: A first radiator, the first radiator comprising a first end, a second end and a first feeding point, the first feeding point being located at the first end; A regulating circuit component, wherein the regulating circuit component includes a first matching circuit and a switching circuit connected in series; and A first feed source, the first feed source electrically connecting the adjustment circuit component to the first feeding point, used to excite the first radiator to support a first target frequency band, the switching circuit is used to adjust different operating frequency bands of the first target frequency band supported by the first radiator; The quarter-wavelength mode from the first end to the second end of the first radiator is used to support the first target frequency band, and the switching circuit, the first matching circuit and the first feed source are all located on the circuit board.

2. The antenna assembly according to claim 1, wherein: The first matching circuit has an input end and an output end, and the input end of the first matching circuit is electrically connected to the first feed source; the switching circuit includes: a switch, the switch comprising a common terminal and a plurality of connection terminals, the common terminal being electrically connectable to one of the plurality of connection terminals and being electrically disconnectable from the connection terminal, the common terminal being electrically connected to one of the output terminal and the first feeding point; and a plurality of lumped element circuits, one end of each lumped element circuit being electrically connected to the connection end, and different lumped element circuits being electrically connected to different connection ends, and the other end of each lumped element circuit being electrically connected to the other of the output end and the first feeding point; When the common end is electrically connected to different connection ends, the operating frequency bands in the first target frequency band supported by the first radiator are different.

3. The antenna assembly according to claim 2, wherein: The common end is electrically connected to the output end of the first matching circuit; the plurality of connection ends include a first connection end, a second connection end, a third connection end and a fourth connection end, and the plurality of lumped element circuits include: a first lumped element circuit, wherein one end of the first lumped element is electrically connected to the first connection end, and the other end of the first lumped element is electrically connected to the first feeding point; a second lumped element circuit, wherein one end of the second lumped element circuit is electrically connected to the second connection end, and the other end of the second lumped element circuit is electrically connected to the first feeding point; a third lumped element circuit, one end of the third lumped element circuit being electrically connected to the third connection end, and the other end of the third lumped element circuit being electrically connected to the first feeding point; and A fourth lumped element circuit, one end of the fourth lumped element circuit is electrically connected to the fourth connection end, and the other end of the fourth lumped element circuit is electrically connected to the first feeding point.

4. The antenna assembly according to claim 1, wherein: The first matching circuit includes one or more matching sub-circuits, and the matching sub-circuits include one or more of the following: A bandpass circuit formed by connecting an inductor and a capacitor in series; A resistance circuit formed by connecting an inductor and a capacitor in parallel; an inductor, a first capacitor, and a second capacitor, wherein the inductor is connected in parallel with the first capacitor, and the second capacitor is electrically connected to a node where the inductor and the first capacitor are electrically connected; A capacitor, a first inductor, and a second inductor, wherein the capacitor is connected in parallel with the first inductor, and the second inductor is electrically connected to a node where the capacitor and the first inductor are electrically connected; an inductor, a first capacitor, and a second capacitor, wherein the inductor is connected in series with the first capacitor, one end of the second capacitor is electrically connected to the first end of the inductor that is not connected to the first capacitor, and the other end of the second capacitor is electrically connected to the end of the first capacitor that is not connected to the inductor; A capacitor, a first inductor, and a second inductor, wherein the capacitor is connected in series with the first inductor, one end of the second inductor is electrically connected to an end of the capacitor that is not connected to the first inductor, and the other end of the second inductor is electrically connected to an end of the first inductor that is not connected to the capacitor; A first capacitor, a second capacitor, a first inductor, and a second inductor, wherein the first capacitor is connected in parallel with the first inductor, the second capacitor is connected in parallel with the second inductor, and one end of a whole formed by the second capacitor and the second inductor in parallel is electrically connected to one end of a whole formed by the first capacitor and the first inductor in parallel; A first capacitor, a second capacitor, a first inductor, and a second inductor, the first capacitor and the first inductor are connected in series to form a first unit, the second capacitor and the second inductor are connected in series to form a second unit, and the first unit and the second unit are connected in parallel.

5. The antenna assembly according to any one of claims 1 to 4, characterized in that: The first feeding point is located at the first end, the antenna assembly further includes a second antenna, and the second antenna includes: a second radiator, the second radiator having a first grounding end, a first free end and a second feeding point, the first grounding end is grounded, and the second feeding point is located between the first grounding end and the first free end; a second matching circuit; and A second feed source, the second feed source electrically connects the second matching circuit to the second feeding point, the second feed source is used to excite the second radiator to support the first resonance mode and the second resonance mode of the second target frequency band, the first resonance mode supports the first frequency band of the second target frequency band, the second resonance mode supports the second frequency band of the second target frequency band, and the second feed source and the second matching circuit are located on the circuit board.

6. The antenna assembly according to claim 5, characterized in that The second antenna also includes: A third radiator, wherein the third radiator comprises a second ground end and a second free end, the second ground end is grounded, and the second ground end is spaced apart from the first end, the second free end is away from the first end compared to the second ground end, and the second free end is opposite to the first free end and spaced apart to form a coupling gap; The third radiator is used to support a third resonance mode of the second target frequency band, and the third resonance mode supports a third frequency band of the second target frequency band.

7. The antenna assembly according to claim 6, wherein: The first resonant mode is a quarter-wavelength mode from the second feeding point to the first ground end; The second resonant mode is a quarter-wavelength mode from the second feeding point to the coupling slot; The third resonance mode is a quarter-wavelength mode from the second free end of the third radiator to the second ground end.

8. The antenna assembly according to claim 7, wherein: The distance d1 between the second feeding point and the first ground terminal satisfies: d1=λ1 / 4, where λ1 is the wavelength corresponding to the center frequency of the first frequency band; The distance d2 between the second feeding point and the coupling slot satisfies: d2=λ2 / 4, where λ2 is the wavelength corresponding to the center frequency of the second frequency band.

9. The antenna assembly according to claim 6, wherein: The first target frequency band is the LB frequency band, and the second target frequency band is the MHB frequency band; The antenna assembly can realize CA of LB band + MHB band; or, The antenna assembly can realize ENDC of LB band + MHB band.

10. The antenna assembly according to any one of claims 1 to 4, characterized in that: The antenna assembly further includes a second antenna, the second antenna comprising: a second radiator, the second radiator having a first grounding end, a first free end and a second feeding point, the first grounding end is grounded, and the second feeding point is located between the first grounding end and the first free end; a second matching circuit; a second feed source, the second feed source electrically connecting the second matching circuit to the second feeding point, the second feed source being used to excite the second radiator to support a first resonance mode and a second resonance mode of a second target frequency band, the first resonance mode supporting a first frequency band of the second target frequency band, the second resonance mode supporting a second frequency band of the second target frequency band, and the second feed source and the second matching circuit being located on the circuit board; and A third radiator, the third radiator comprising a second free end, a third free end and a connection point, the second free end is spaced apart from the first free end and forms a coupling gap, the third free end is spaced apart from the first free end, and the connection point is located at the third free end; The switching circuit is also electrically connected to the connection point to stimulate the third radiator to support a third target frequency band.

11. The antenna assembly according to claim 10, wherein: The first target frequency band is the LB frequency band, the second target frequency band is the MHB frequency band, and the third target frequency band is the UHB frequency band.

12. An electronic device, characterized in that: The electronic device comprises the antenna assembly as described in any one of claims 1-11.

Images