Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a ground pole, a first antenna and a second antenna. The earth pole comprises a first edge, a second edge and a third edge which are sequentially connected in a bent mode, the third edge and the first edge are arranged in a back-to-back mode, and the length of the first edge and the length of the third edge are both larger than that of the second edge; the first antenna comprises a first radiating body and a first feed source, the first radiating body is provided with a first feeding point, the first radiating body is arranged corresponding to the first edge, and the first feed source is electrically connected to the first feeding point to excite the first radiating body to support a target frequency band; the second antenna comprises a second radiating body and a second feed source, the second radiating body is provided with a second feeding point, the second radiating body is arranged corresponding to the third side, and the second feed source is electrically connected to the second radiating body to excite the second radiating body to support the target frequency band. The antenna assembly provided by the invention is relatively high in antenna efficiency in the target frequency band.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna assembly and electronic device. Background Technology

[0002] With technological advancements, mobile phones and other electronic devices with communication capabilities are becoming increasingly widespread and powerful. These devices typically include antenna components to enable their communication functions. However, the functionality of antenna components in related technologies still has room for improvement. Summary of the Invention

[0003] In a first aspect, one embodiment of this application provides an antenna assembly, the antenna assembly including a ground electrode, a first antenna, and a second antenna;

[0004] The ground pole includes a first side, a second side, and a third side that are bent and connected in sequence, wherein the third side is arranged opposite to the first side, and the lengths of the first side and the third side are both greater than the length of the second side;

[0005] The first antenna includes a first radiator and a first feed source. The first radiator has a first feed point. The first radiator is disposed corresponding to the first side. The first feed source is electrically connected to the first feed point to excite the first radiator to support the target frequency band.

[0006] The second antenna includes a second radiator and a second feed source. The second radiator has a second feed point and is disposed on a third side. The second feed source is electrically connected to the second radiator to excite the second radiator to support the target frequency band.

[0007] In a second aspect, embodiments of this application provide an electronic device, the electronic device including the antenna assembly as described in the first aspect.

[0008] The antenna assembly provided in this application embodiment has a first radiator of the first antenna disposed corresponding to the first side, and a second radiator of the second antenna disposed corresponding to the second side. The second side is disposed opposite to the first side. It can be seen that the positions of the first radiator and the second radiator are relatively far apart. Therefore, the isolation between the first antenna and the second antenna is good, and the antenna efficiency of the first antenna and the second antenna when supporting the target frequency band is good.

[0009] Furthermore, the first radiator is positioned corresponding to the first side of the ground electrode, that is, the first radiator is positioned corresponding to the long side of the ground electrode. When the first antenna supports the target frequency band, it can excite the resonant current (also known as the transverse current) of the ground electrode along the extension direction of the second side. When the antenna assembly is applied in an electronic device, if the electronic device is in portrait mode, when the first radiator of the first antenna is blocked by the user's hand, it will better excite the equivalent electrical length of the resonant mode of the first radiator supporting the target frequency band, thereby achieving a human enhancement effect, and thus making the first antenna have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the first radiator of the first antenna, the user's hand is equivalent to lengthening the width of the ground electrode when supporting the target frequency band, which can better excite the eigenmode of the ground electrode (i.e., the transverse mode of the resonant current along the second direction), further making the antenna assembly have better antenna performance in the target frequency band.

[0010] Furthermore, the second radiator is positioned corresponding to the third side of the ground electrode, that is, the second radiator is positioned corresponding to the long side of the ground electrode. When the second antenna supports the target frequency band, it can excite a resonant current (also known as a lateral current) along the extension direction of the second side of the ground electrode. When the antenna assembly is applied in an electronic device, if the electronic device is in portrait mode, and the second radiator of the second antenna is blocked by the user's hand, the equivalent electrical length of the resonant mode supporting the target frequency band will be better excited, thereby achieving a human enhancement effect and making the second antenna have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the second radiator of the second antenna, the user's hand effectively lengthens the width of the ground electrode when supporting the target frequency band, further enhancing the antenna performance of the antenna assembly in the target frequency band. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of an electronic device in the related technology;

[0013] Figure 2 for Figure 1 A schematic diagram of the antenna assembly of the electronic device shown;

[0014] Figure 3 A schematic diagram of an antenna assembly provided according to one embodiment of this application;

[0015] Figure 4 for Figure 2 A schematic diagram of the first resonant current flow direction of the first radiator of the antenna assembly shown in the figure;

[0016] Figure 5 for Figure 2 A detailed diagram illustrating other components within the antenna assembly;

[0017] Figure 6 A schematic diagram of an antenna assembly provided for another embodiment of this application;

[0018] Figure 7 for Figure 6 The circuit diagram of the first matching circuit of the first antenna in the antenna assembly shown;

[0019] Figure 8 for Figure 3 Detailed diagram of the provided antenna assembly;

[0020] Figure 9 for Figure 8 A schematic diagram of the flow direction of the second resonant current in the second radiator of the antenna assembly shown in the figure;

[0021] Figure 10 for Figure 8 A schematic diagram showing partial details of the second radiator in the antenna assembly shown;

[0022] Figure 11 A schematic diagram of an antenna assembly provided in another embodiment of this application;

[0023] Figure 12 Standing wave diagram of the first antenna of the antenna assembly provided in one embodiment of this application in a free scene;

[0024] Figure 13 Antenna efficiency diagram of the first antenna of the antenna assembly provided in one embodiment of this application in a free scene;

[0025] Figure 14 This is a schematic diagram simulating an antenna assembly applied to an electronic device in one embodiment, with the electronic device being held by the right hand.

[0026] Figure 15 Efficiency curves of the first antenna provided in one embodiment of this application in both right-handed and free states;

[0027] Figure 16 A schematic diagram of the electronic device to which the antenna assembly of one embodiment of this application is used when the left head and hand are positioned.

[0028] Figure 17Efficiency curves of the first antenna of the antenna assembly provided in one embodiment of this application in the left-handed and free states;

[0029] Figure 18 A perspective view of an electronic device provided according to an embodiment of this application;

[0030] Figure 19 for Figure 18 A schematic diagram of the electronic device shown from another perspective;

[0031] Figure 20 for Figure 19 A partial schematic diagram of the electronic device shown;

[0032] Figure 21 A circuit diagram of an electronic device provided according to one embodiment of this application.

[0033] Explanation of main component designations

[0034] Electronic device 1, with first side 1a, bottom side 1b, second side 1c, long side 1d, and short side 1e;

[0035] Antenna assembly 10, ground pole 100, first side 100a, second side 100b, third side 100c;

[0036] First antenna 110, first radiator 111, first ground terminal 1111, first grounding point G1, first feed point P1, first free end 1112, first end face 112a;

[0037] First feed S1, first matching circuit M1, first capacitor C1, switching unit 1131, common terminal RFC, connection terminal 113a, first connection terminal RF1, second connection terminal RF2, third connection terminal RF3, fourth connection terminal RF4;

[0038] Matching branch 1132, first inductor L1, second capacitor C2, third capacitor C3, second inductor L2, third inductor L3;

[0039] Second antenna 120, second feed S2, second matching circuit M2, second radiator 121, second ground terminal 1211, second grounding point G2, second feed point P2, second free end 1212, second end face 121a.

[0040] Display screen 20, middle frame 30, frame body 310, bezel 320, battery cover 40;

[0041] First resonant current I1, second resonant current I2. Detailed Implementation

[0042] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without creative effort are within the protection scope of this application.

[0043] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0044] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device comprising one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0045] Before introducing the antenna assembly 10 provided in the embodiments of this application, the antenna assembly 10 provided in the related art will be described in detail.

[0046] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of an electronic device in the related technology; Figure 2 for Figure 1The diagram shows a schematic of an antenna assembly for an electronic device. In related art, antenna assembly 10 includes a ground electrode 100, a first antenna 110, and a second antenna 120. The ground electrode 100 includes a short side 1e and a long side 1d that are bent and connected. The first antenna 110 includes a first radiator 111 and a first feed source S1. The first radiator 111 has a first feed point P1. The first feed source S1 is electrically connected to the first feed point P1 to excite the first radiator 111 to support a target frequency band. The second antenna 120 includes a second radiator 121 and a second feed source S2. The second radiator 121 has a second feed point P2. The second feed source S2 is electrically connected to the second feed point P2 to excite the second radiator 121 to support the target frequency band. In related art, a portion of the first radiator 111 is configured corresponding to the long side 1d, and another portion of the first radiator 111 is configured corresponding to the short side 1e. The second radiator 121 is configured corresponding to the long side 1d. From the perspective shown in the figure, the first radiator 111 is positioned at the lower right corner of the ground pole 100, and the second radiator 121 is positioned at the right side of the ground pole 100.

[0047] When the antenna assembly 10 is applied in the electronic device 1, the short side 1e of the ground electrode 100 corresponds to the short side of the electronic device 1, and the long side 1d of the ground electrode 100 corresponds to the long side of the electronic device 1.

[0048] In related technologies, the first radiator 111 and the second radiator 121 of the antenna assembly 10 are close to each other, resulting in poor isolation between the first antenna 110 and the second antenna 120, which affects the antenna efficiency when the first antenna 110 and the second antenna 120 support the target frequency band.

[0049] Furthermore, since a portion of the first radiator 111 is positioned corresponding to the long side 1d of the ground electrode 100, and the second radiator 121 is positioned corresponding to the long side 1d of the ground electrode 100, when the first antenna 110 and the second antenna 120 are operating, they will excite a current (also called longitudinal current) along the extension direction of the long side 1d of the ground electrode 100. When the antenna assembly 10 is applied to the electronic device 1, when the electronic device 1 is in portrait mode and is held by a user, at least a portion of the first radiator 111 and at least a portion of the second radiator 121 will be blocked by the user's hand, thereby weakening or interrupting the longitudinal current excited on the ground electrode 100, and thus reducing the efficiency of the first antenna 110 and the second antenna 120 in supporting the target frequency band.

[0050] For example, when the target frequency band is a low-frequency band (LB), the performance of the first antenna 110 and the second antenna 120 will decrease significantly when the electronic device 1 is in a user-held or head-and-hand scenario. For instance, the efficiency of the first antenna 110 in the target frequency band under the left-head-and-hand scenario will decrease by 5dB to 6dB, and the efficiency of the second antenna 120 in the target frequency band under the user-held and head-and-hand scenarios will decrease by 7dB to 8dB.

[0051] This application provides an antenna assembly 10 according to one embodiment, and the antenna assembly 10 provided by this application embodiment will be described in detail below.

[0052] Please see Figure 3 , Figure 3 This is a schematic diagram of an antenna assembly provided according to an embodiment of this application. The antenna assembly 10 includes a ground electrode 100, a first antenna 110, and a second antenna 120. The ground electrode 100 includes a first side 100a, a second side 100b, and a third side 100c that are bent and connected in sequence. The third side 100c is disposed opposite to the first side 100a, and the lengths of both the first side 100a and the third side 100c are greater than the length of the second side 100b. The first antenna 110 includes a first radiator 111 and a first feed source S1. The first radiator 111 has a first feed point P1, and the first radiator 111 is disposed corresponding to the first side 100a. The first feed source S1 is electrically connected to the first feed point P1 to excite the first radiator 111 to support the target frequency band. The second antenna 120 includes a second radiator 121 and a second feed source S2. The second radiator 121 has a second feed point P2, and the second radiator 121 is set corresponding to the third side 100c. The second feed source S2 is electrically connected to the second radiator 121 to excite the second radiator 121 to support the target frequency band.

[0053] When the antenna assembly 10 is applied to the electronic device 1, the ground electrode 100 can be, but is not limited to, ground communicating with the frame body of the electronic device 1, ground of the motherboard of the electronic device 1, ground of the shielding of the display screen of the electronic device 1, or ground of the housing of the electronic device 1. In this embodiment, the ground electrode 100 of the antenna assembly 10 is not limited.

[0054] The first side 100a and the third side 100c of the ground electrode 100 are both long sides of the ground electrode 100, and the second side 100b of the ground electrode 100 is the short side of the ground electrode 100. When the antenna assembly 10 is applied to the electronic device 1, the first side 100a and the third side 100c of the ground electrode 100 are both set to correspond to the long side of the electronic device 1, and the second side 100b is set to correspond to the short side of the electronic device 1. When the electronic device 1 is in portrait mode and is held by the user, one of the first side 100a and the third side 100c is easily held by the user. For example, when the electronic device 1 is in portrait mode and the user holds the electronic device 1 with their right hand, the first radiator 111 of the first antenna 110 is blocked by the user. When the electronic device 1 is in portrait mode and the user holds the electronic device 1 with their left hand, the second radiator 121 of the second antenna 120 is blocked by the user.

[0055] The first radiator 111 can be a laser-direct structuring (LDS) radiator, a flexible printed circuit (FPC) radiator, a printed direct structuring (PDS) radiator, or a metal dendrite radiator. When the antenna assembly 10 is applied to the electronic device 1, the first radiator 111 can be a device utilizing the electronic device 1 (see...). Figure 18 and Figure 19 Mechanical Design Antenna (MDA) radiators with their own embedded metal design. For example, the first radiator 111 can utilize the plastic and metal frame 30 of the electronic device 1 (see...). Figure 18 and Figure 19 The antenna radiator 111 is designed as follows. In addition, the first radiator 111 can also be a frame radiator designed for the metal frame 30.

[0056] The first feed source S1 can be electrically connected to the first feed point P1 in a manner that is not limited to, but can be, the feed source being electrically connected to the first feed point P1 through a feed component (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.).

[0057] The second radiator 121 can be a laser direct structuring (LDS) radiator, a flexible printed circuit (FPC) radiator, a printed direct structuring (PDS) radiator, or a metal dendrite radiator. When the antenna assembly 10 is applied to the electronic device 1, the second radiator 121 can be a device utilizing the electronic device 1 (see...). Figure 18 and Figure 19 Mechanical Design Antenna (MDA) radiators with their own embedded metal design. For example, the second radiator 121 can utilize the plastic and metal frame 30 of the electronic device 1 (see...). Figure 18 and Figure 19 The antenna radiator 121 is designed as follows. In addition, the second radiator 121 can also be a frame radiator designed for the metal frame 30.

[0058] The second feed source S2 can be electrically connected to the second feed point P2 in a manner that is not limited to, but can be, the feed source being electrically connected to the second feed point P2 through a feed component (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.).

[0059] The antenna assembly 10 provided in this application embodiment has a first radiator 111 of the first antenna 110 disposed corresponding to the first side 100a, and a second radiator 121 of the second antenna 120 disposed corresponding to the second side 100b. The second side 100b is disposed opposite to the first side 100a. It can be seen that the positions of the first radiator 111 and the second radiator 121 are relatively far apart. Therefore, the isolation between the first antenna 110 and the second antenna 120 is good, and the antenna efficiency of the first antenna 110 and the second antenna 120 when supporting the target frequency band is good.

[0060] Furthermore, the first radiator 111 is positioned corresponding to the first side 100a of the ground electrode 100, that is, the first radiator 111 is positioned corresponding to the long side of the ground electrode 100. When the first antenna 110 supports the target frequency band, it can excite the resonant current (also called lateral current) of the ground electrode 100 along the extension direction of the second side 100b. When the antenna assembly 10 is applied in the electronic device 1, if the electronic device 1 is in portrait mode, when the first radiator 111 of the first antenna 110 is blocked by the user's hand, it will better excite the equivalent electrical length of the resonant mode of the first radiator 111 supporting the target frequency band, thereby achieving a human body enhancement effect, and thus enabling the first antenna 110 to have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the first radiator 111 of the first antenna 110, the user's hand effectively lengthens the width of the ground electrode 100 when supporting the target frequency band, which can better excite the eigenmode of the ground electrode 100 (i.e., the transverse mode of the resonant current along the second direction), further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0061] Furthermore, the second radiator 121 is positioned corresponding to the third side 100c of the ground electrode 100, that is, the second radiator 121 is positioned corresponding to the long side of the ground electrode 100. When the second antenna 120 supports the target frequency band, it can excite the resonant current (also called lateral current) of the ground electrode 100 along the extension direction of the second side 100b. When the antenna assembly 10 is applied in the electronic device 1, if the electronic device 1 is in portrait mode, when the second radiator 121 of the second antenna 120 is blocked by the user's hand, it will better excite the equivalent electrical length of the resonant mode of the second radiator 121 supporting the target frequency band, thereby achieving a human body enhancement effect, and thus making the second antenna 120 have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the second radiator 121 of the second antenna 120, the user's hand is equivalent to lengthening the width of the ground electrode 100 when supporting the target frequency band, further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0062] Please see Figure 3 and Figure 4 , Figure 4 for Figure 2The diagram illustrates the flow of the first resonant current in the first radiator of the antenna assembly. In this embodiment, the first radiator 111 further includes a first ground terminal 1111 and a first free terminal 1112. The first ground terminal 1111 is electrically connected to the ground electrode 100 for grounding. The first feed point P1 is electrically connected to the first feed source S1. The first free terminal 1112 is located away from the second side 100b relative to the first ground terminal 1111. The quarter-wavelength mode from the first ground terminal 1111 to the first free terminal 1112 of the first radiator 111 supports the target frequency band.

[0063] The first grounding terminal 1111 can be grounded in a manner that is not limited to, but can be electrically connected to the ground electrode 100 of the electronic device 1 through a grounding component (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.) at the first grounding terminal 1111.

[0064] The first free end 1112 is further away from the second side 100b than the first ground end 1111. Therefore, when the antenna assembly 10 is applied to the electronic device 1, the first free end 1112 is further away from the bottom edge of the electronic device 1 than the first ground end 1111. In other words, when the electronic device 1 to which the antenna assembly 10 is applied is in a portrait mode, the opening of the first radiator 111 of the first antenna 110 faces upward.

[0065] The first free end 1112 of the first radiator 111 is further away from the second side 100b than the first ground end 1111, which can better excite the first radiator 111 to support the intrinsic modes required by the target frequency band.

[0066] The resonant current when the first radiator 111 supports the target frequency band is named the first resonant current I1. (See also...) Figure 4 During the current half-wavelength period, the first resonant current I1 flows from the first ground terminal 1111 to the first free terminal 1112. Understandably, the first resonant current I1 is periodically changing. In the next half-wavelength period, the first resonant current I1 flows from the first free terminal 1112 to the first ground terminal 1111. The direction of the first resonant current I1 shown in the schematic diagram of this application should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0067] The quarter-wavelength mode from the first ground terminal 1111 to the first free terminal 1112 of the first radiator 111 supports the target frequency band. This quarter-wavelength mode, also known as the fundamental mode, has good antenna efficiency. The antenna assembly 10 provided in this application provides that the quarter-wavelength mode from the first ground terminal 1111 to the first free terminal 1112 of the first radiator 111 supports the target frequency band, thereby enabling the first antenna 110 to have good antenna efficiency in the target frequency band.

[0068] Please see Figure 5 , Figure 5 for Figure 2 The diagram shows detailed identification of other components in the antenna assembly. The first grounding terminal 1111 has a first grounding point G1, which is electrically connected to the ground electrode 100. The distance d11 from the first grounding point G1 to the second side 100b satisfies: 55mm ≤ d11 ≤ 70mm. The first free end 1112 has a first end face 112a facing away from the first grounding terminal 1111, and the distance d12 from the first end face 112a to the second side 100b satisfies: 105mm ≤ d12 ≤ 120mm.

[0069] The distance d11 from the first grounding point G1 to the second side 100b can be, but is not limited to, 55mm, 56mm, 57mm, 58mm, 59mm, 60mm, 61mm, 62mm, 63mm, 64mm, 65mm, 67mm, 68mm, 69mm, or 70mm.

[0070] The distance d12 from the first end face 112a to the second side 100b can be, but is not limited to, 105mm, 106mm, 107mm, 108mm, 109mm, 110mm, 111mm, 112mm, 113mm, 114mm, 115mm, 116mm, 117mm, 118mm, 119mm, or 120mm.

[0071] The distance d11 from the first grounding point G1 to the second side 100b satisfies: 55mm≤d11≤70mm; the first free end 1112 has a first end face 112a facing away from the first grounding end 1111, and the distance d12 from the first end face 112a to the second side 100b satisfies: 105mm≤d12≤120mm. On the one hand, this makes the first radiator 111 more compatible with the electrical length required by the target frequency band supported by the first radiator 111. On the other hand, when the antenna assembly 10 is applied to the electronic device 1, when the electronic device 1 is in a vertical screen state, the first radiator 111 of the first antenna 110 is more easily blocked by the user's hand, which will better excite the equivalent electrical length of the resonant mode of the first radiator 111 supporting the target frequency band, thereby achieving a human body enhancement effect, and thus making the first antenna 110 have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the first radiator 111 of the first antenna 110, the user's hand effectively lengthens the width of the ground electrode 100 when supporting the target frequency band, which can better excite the eigenmode of the ground electrode 100 (i.e., the transverse mode of the resonant current along the second direction), thereby further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0072] Please see Figure 6 , Figure 6 This is a schematic diagram of an antenna assembly provided in another embodiment of this application. The antenna assembly 10 includes a ground electrode 100, a first antenna 110, and a second antenna 120. The ground electrode 100 includes a first side 100a, a second side 100b, and a third side 100c that are sequentially bent and connected. The third side 100c is disposed opposite to the first side 100a, and the lengths of both the first side 100a and the third side 100c are greater than the length of the second side 100b. The first antenna 110 includes a first radiator 111 and a first feed source S1. The first radiator 111 has a first feed point P1, and the first radiator 111 is disposed corresponding to the first side 100a. The first feed source S1 is electrically connected to the first feed point P1 to excite the first radiator 111 to support the target frequency band. The second antenna 120 includes a second radiator 121 and a second feed source S2. The second radiator 121 has a second feed point P2, and the second radiator 121 is set corresponding to the third side 100c. The second feed source S2 is electrically connected to the second radiator 121 to excite the second radiator 121 to support the target frequency band.

[0073] Furthermore, in this embodiment, the antenna assembly 10 further includes a first matching circuit M1. The first feed source S1 is electrically connected to the first matching circuit M1 to the first feed point P1, and the first matching circuit M1 is used to adjust the sub-frequency band in the target frequency band supported by the first radiator 111.

[0074] In one embodiment, the target frequency band includes multiple sub-bands, each with a different frequency. For example, when the target frequency band includes a low-frequency band, the multiple sub-bands include the B28 band, the B5 band, and the B8 band.

[0075] The first matching circuit M1 is used to adjust the sub-bands in the target frequency band supported by the first radiator 111. For example, the first matching circuit M1 is used to enable the first radiator 111 to support the B28 band in the low-frequency band; or, the first matching circuit M1 is used to enable the first radiator 111 to support the B5 band in the low-frequency band; or, the first matching circuit M1 is used to enable the first radiator 111 to support the B8 band in the low-frequency band.

[0076] The antenna assembly 10 provided in this application embodiment further includes a first matching circuit M1, which is used to adjust the sub-bands of the target frequency band supported by the first radiator 111. Therefore, the first radiator 111 can support more sub-bands and realize the communication function of each sub-band.

[0077] Please see Figure 7 , Figure 7 for Figure 6 The diagram shows a circuit diagram of the first matching circuit of the first antenna in the antenna assembly shown. In this embodiment, the first matching circuit M1 includes a first capacitor C1. The first feed source S1 is electrically connected to the first capacitor C1 to the first feed point P1.

[0078] In this embodiment, the first matching circuit M1 includes a first capacitor C1, and the first feed source S1 is electrically connected to the first capacitor C1 to the first feed point P1. Therefore, the first feed source S1 is coupled to the first feed point P1 through the first capacitor C1. Since the first feed source S1 is electrically connected to the first capacitor C1 and the first feed point P1, it can effectively excite the quarter-wavelength mode from the first ground terminal 1111 to the first free terminal 1112 of the first radiator 111 to support the target frequency band, thereby enabling the first antenna 110 to have high antenna efficiency in the target frequency band.

[0079] Please continue reading. Figure 7In this embodiment, the first matching circuit M1 further includes a switching unit 1131 (Tunner) and multiple matching branches 1132. The switching unit 1131 includes a common terminal RFC and multiple connection terminals 113a. Each connection terminal 113a has a connected state electrically connected to the common terminal RFC and a disconnected state disconnected from the common terminal RFC. The multiple connection terminals 113a cooperate to enable the switching unit 1131 to have multiple states. One end of each matching branch 1132 is connected to the connection terminal 113a, and different matching branches 1132 are connected to different connection terminals 113a. The other end of each matching branch 1132 is grounded. When the switching unit 1131 is in different states, the first antenna 110 supports different sub-bands in the target frequency band.

[0080] In one embodiment, the switching unit 1131 can be, but is not limited to, a single-pole four-throw (SP4T) switch, a single-pole multi-throw (SPM) switch, or a multi-pole multi-throw (MPM) switch. Each connection terminal 113a can be electrically connected to the common terminal RFC, and each connection terminal 113a can be electrically disconnected from the common terminal RFC. The plurality of connection terminals 113a cooperate with each other, so that the switching unit 1131 has a variety of different states. When the switching unit 1131 is in different states, the first antenna 110 supports different sub-frequency bands in the target frequency band. Thus, it can be seen that the first matching circuit M1 of the antenna assembly 10 in this embodiment can support different sub-frequency bands in the target frequency band and realize the communication function of each sub-frequency band through the combination of the switching unit 1131 and the matching branch 1132.

[0081] In one embodiment, when the target frequency band is a low-frequency band, and when the common terminal RFC is disconnected from all connection terminals 113a, the first antenna 110 supports the B28 frequency band of the low-frequency band.

[0082] In this embodiment, when the target frequency band is a low frequency band, and when the common terminal RFC is disconnected from all connection terminals 113a, the first antenna 110 supports the B28 frequency band of the low frequency band. Therefore, the first antenna 110 of the antenna assembly 10 provided in this application embodiment can realize communication in the B28 frequency band of the low frequency band.

[0083] For further information, please refer to [link / reference]. Figure 7The plurality of connection terminals 113a includes a first connection terminal RF1. The plurality of matching branches 1132 includes a first inductor L1. One end of the first inductor L1 is electrically connected to the first connection terminal RF1, and the other end of the first inductor L1 is grounded. When the common terminal RFC is electrically connected to the first connection terminal RF1, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except the first connection terminal RF1, the first antenna 110 supports the B5 band of the low-frequency band.

[0084] In this embodiment, the plurality of matching branches 1132 includes a first inductor L1, one end of which is electrically connected to the first connection terminal RF1, and the other end of which is grounded. When the common terminal RFC is electrically connected to the first connection terminal RF1, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except the first connection terminal RF1, the first antenna 110 supports the B5 band of the low-frequency band. Thus, the first antenna 110 of the antenna assembly 10 provided in this embodiment can realize communication in the B5 band of the low-frequency band.

[0085] Furthermore, the plurality of connection terminals 113a also includes a second connection terminal RF2. The plurality of matching branches 1132 also includes a second capacitor C2. One end of the second capacitor C2 is electrically connected to the second connection terminal RF2, and the other end of the second capacitor C2 is grounded. When the common terminal RFC is electrically connected to the second connection terminal RF2, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except for the second connection terminal RF2, the first antenna 110 supports the B8 band of the low-frequency band.

[0086] In this embodiment, the first antenna 110 of the antenna assembly 10 provided in this application embodiment can realize communication in the B8 band of the low frequency band.

[0087] Furthermore, the first matching circuit M1 can also switch the transmission and reception frequency bands of each sub-band of the low-frequency band. For details, please refer to [link / reference needed]. Figure 7In one embodiment, when the common terminal RFC is electrically disconnected from all connection terminals 113a, the first antenna 110 supports the transmission frequency band of the low-frequency B28 band. The plurality of connection terminals 113a also includes a third connection terminal RF3. The plurality of matching branches 1132 also include a third capacitor C3. One end of the third capacitor C3 is electrically connected to the third connection terminal RF3, and the other end of the third capacitor C3 is grounded. Specifically, when the common terminal RFC is electrically connected to the third connection terminal RF3, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except for the third connection terminal RF3, the first antenna 110 supports the reception frequency band of the B28 band.

[0088] In this embodiment, when the common terminal RFC is disconnected from all connection terminals 113a, the first antenna 110 supports the transmission frequency band of the B28 band in the low-frequency band; when the common terminal RFC is electrically connected to the third connection terminal RF3, and the common terminal RFC is disconnected from all connection terminals 113a except the third connection terminal RF3, the first antenna 110 supports the reception frequency band of the B28 band; thus, the first matching circuit M1 can realize the switching between the transmission frequency band and the reception frequency band of the B28 band in the low-frequency band. The first antenna 110 of the antenna assembly 10 provided in this application embodiment can support the transmission frequency band and the reception frequency band of the B28 band in the low-frequency band, satisfying the communication of the low-frequency band in the transmission frequency band and the reception frequency band of the B28 band.

[0089] Please continue reading. Figure 7 In one embodiment, when the common terminal RFC is electrically connected to the first connection terminal RF1, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except for the first connection terminal RF1, the first antenna 110 supports the transmission frequency band of the B5 band in the low-frequency band. The plurality of connection terminals 113a further includes a fourth connection terminal RF4. The plurality of matching branches 1132 further includes a second inductor L2. One end of the second inductor L2 is electrically connected to the fourth connection terminal RF4, and the other end of the second inductor L2 is grounded. Specifically, when the common terminal RFC is electrically connected to the fourth connection terminal RF4, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except for the fourth connection terminal RF4, the first antenna 110 supports the reception frequency band of the B5 band.

[0090] In this embodiment, when the common terminal RFC is electrically connected to the first connection terminal RF1, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except the first connection terminal RF1, the first antenna 110 supports the transmission frequency band of the B5 band in the low-frequency band; when the common terminal RFC is electrically disconnected from all other connection terminals 113a except the fourth connection terminal RF4, the first antenna 110 supports the reception frequency band of the B5 band. Therefore, the first matching circuit M1 can realize the switching between the transmission frequency band and the reception frequency band of the B5 band in the low-frequency band. The first antenna 110 of the antenna assembly 10 provided in this application embodiment can support the transmission frequency band and the reception frequency band of the B5 band in the low-frequency band, satisfying the communication of the low-frequency band in the transmission and reception frequency bands of the B5 band.

[0091] Please continue reading. Figure 7 In one embodiment, when the common terminal RFC is electrically connected to the second connection terminal RF2, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except for the second connection terminal RF2, the first antenna 110 supports the transmission frequency band of the B8 band in the low-frequency band. When both the third connection terminal RF3 and the fourth connection terminal RF4 are electrically connected to the common terminal RFC, the first antenna 110 supports the reception frequency band of the B8 band.

[0092] In this embodiment, when the common terminal RFC is electrically connected to the second connection terminal RF2, and the common terminal RFC is electrically disconnected from all other connection terminals 113a except for the second connection terminal RF2, the first antenna 110 supports the transmission frequency band of the B8 band in the low-frequency band. When the third connection terminal RF3 and the fourth connection terminal RF4 are both electrically connected to the common terminal RFC, the first antenna 110 supports the reception frequency band of the B8 band. Therefore, the first matching circuit M1 can realize the switching between the transmission frequency band and the reception frequency band of the B8 band in the low-frequency band. The first antenna 110 of the antenna assembly 10 provided in this application embodiment can support the transmission frequency band and the reception frequency band of the B8 band in the low-frequency band, satisfying the communication of the low-frequency band in the transmission and reception frequency bands of the B8 band.

[0093] For further information, please refer to [link / reference]. Figure 7 The first matching circuit M1 includes a third inductor L3. One end of the third inductor L3 is electrically connected to the first feed point P1, and the other end of the third inductor L3 is grounded.

[0094] One end of the third inductor L3 is electrically connected to the first feed point P1, and the other end of the third inductor L3 is grounded. The third inductor L3 is a tuning inductor, which makes the first radiator 111 of the first antenna 110 more compatible with the electrical length of the target frequency band to be supported, thereby making the target frequency band supported by the first antenna 110 of the antenna assembly 10 have better antenna performance.

[0095] In one embodiment, if the electrical length of the first radiator 111 matches the electrical length of the target frequency band to be supported, the first matching circuit M1 may not include the third inductor L3.

[0096] The second antenna 120 of the antenna assembly 10 provided in this application will now be described in detail. The second antenna 120 of the antenna assembly 10 provided in this application can be incorporated into any of the antenna assemblies 10 provided in the preceding embodiments. The schematic diagrams in this application illustrate the integration of the second antenna 120 into an antenna assembly 10 provided in a preceding embodiment; however, this should not be construed as a limitation on the antenna assembly 10 provided in this application. Please refer to... Figure 8 and Figure 9 , Figure 8 for Figure 3 Detailed diagram of the provided antenna assembly; Figure 9 for Figure 8 The diagram shows the flow of the second resonant current in the second radiator of the antenna assembly. The second radiator 121 has a second ground terminal 1211, a second feed point P2, and a second free end 1212 arranged sequentially. The second ground terminal 1211 is electrically connected to the ground electrode 100 for grounding. The second feed point P2 is electrically connected to the second feed source S2. The second free end 1212 is located away from the second side 100b relative to the second ground terminal 1211. The quarter-wavelength mode from the second ground terminal 1211 to the second free end 1212 of the second radiator 121 supports the target frequency band.

[0097] The second grounding terminal 1211 can be grounded in a manner that is not limited to, but can be electrically connected to the ground electrode 100 of the electronic device 1 through a grounding component (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.) at the second grounding terminal 1211.

[0098] The second free end 1212 is further away from the second side 100b than the second ground end 1211. Therefore, when the antenna assembly 10 is applied to the electronic device 1, the second free end 1212 is further away from the bottom edge of the electronic device 1 than the second ground end 1211. In other words, when the electronic device 1 to which the antenna assembly 10 is applied is in a portrait mode, the opening of the second radiator 121 of the second antenna 120 faces upward.

[0099] The second free end 1212 of the second radiator 121 is away from the second side 100b compared to the second ground end 1211, which can better excite the second radiator 121 to support the intrinsic modes required by the target frequency band.

[0100] The resonant current when the second radiator 121 supports the target frequency band is named the second resonant current I2. (See also...) Figure 9 During the current half-wavelength period, the second resonant current I2 flows from the second ground terminal 1211 to the second free terminal 1212. Understandably, the second resonant current I2 is periodically changing. In the next half-wavelength period, the second resonant current I2 flows from the second free terminal 1212 to the second ground terminal 1211. The direction of the second resonant current I2 shown in the schematic diagram of this application should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0101] The quarter-wavelength mode from the second ground terminal 1211 to the second free terminal 1212 of the second radiator 121 supports the target frequency band. This quarter-wavelength mode, also known as the fundamental mode, has good antenna efficiency. The antenna assembly 10 provided in this application provides that the quarter-wavelength mode from the second ground terminal 1211 to the second free terminal 1212 of the second radiator 121 supports the target frequency band, thereby enabling the second antenna 120 to have good antenna efficiency in the target frequency band.

[0102] Please see Figure 10 , Figure 10 for Figure 8 The diagram shows partial details of the second radiator in the antenna assembly. The second grounding terminal 1211 has a second grounding point G2, which is electrically connected to the ground electrode 100. The distance d21 from the second grounding point G2 to the second side 100b satisfies: 55mm ≤ d21 ≤ 70mm. The second free end 1212 has a second end face 121a facing away from the second grounding terminal 1211. The distance d22 from the second end face 121a to the second side 100b satisfies: 105mm ≤ d22 ≤ 120mm.

[0103] The distance d21 from the second grounding point G2 to the second side 100b can be, but is not limited to, 55mm, 56mm, 57mm, 58mm, 59mm, 60mm, 61mm, 62mm, 63mm, 64mm, 65mm, 67mm, 68mm, 69mm, or 70mm.

[0104] The distance d22 from the second end face 121a to the second side 100b can be, but is not limited to, 105mm, 106mm, 107mm, 108mm, 109mm, 110mm, 111mm, 112mm, 113mm, 114mm, 115mm, 116mm, 117mm, 118mm, 119mm, or 120mm.

[0105] The distance d21 from the second grounding point G2 to the second side 100b satisfies: 55mm≤d21≤70mm; the second free end 1212 has a second end face 121a facing away from the second grounding end 1211, and the distance d22 from the second end face 121a to the second side 100b satisfies: 105mm≤d22≤120mm. On the one hand, this makes the electrical length required by the second radiator 121 to support the target frequency band more compatible. On the other hand, when the antenna assembly 10 is applied to the electronic device 1, when the electronic device 1 is in a vertical screen state, the second radiator 121 of the second antenna 120 is more easily blocked by the user's hand, which will better excite the equivalent electrical length of the resonant mode of the second radiator 121 to support the target frequency band, thereby achieving a human body enhancement effect, and thus making the second antenna 120 have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the second radiator 121 of the second antenna 120, the user's hand effectively lengthens the width of the ground electrode 100 when supporting the target frequency band, which can better excite the eigenmode of the ground electrode 100 (i.e., the transverse mode of the resonant current along the second direction), further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0106] Please see Figure 11 , Figure 11 This is a schematic diagram of an antenna assembly provided in another embodiment of the present application. In this embodiment, the antenna assembly 10 further includes a second matching circuit M2. The second feed source S2 is electrically connected to the second matching circuit M2 to the second feed point, and the second matching circuit M2 is used to adjust a sub-band in the target frequency band supported by the second radiator 121.

[0107] In one embodiment, the target frequency band includes multiple sub-bands, each with a different frequency. For example, when the target frequency band includes a low-frequency band, the multiple sub-bands include the B28 band, the B5 band, and the B8 band.

[0108] The second matching circuit M2 is used to adjust the sub-bands in the target frequency band supported by the second radiator 121. For example, the second matching circuit M2 is used to enable the second radiator 121 to support the B28 band in the low-frequency band; or, the second matching circuit M2 is used to enable the second radiator 121 to support the B5 band in the low-frequency band; or, the second matching circuit M2 is used to enable the second radiator 121 to support the B8 band in the low-frequency band.

[0109] The antenna assembly 10 provided in this application embodiment further includes a second matching circuit M2. The second matching circuit M2 is used to adjust the sub-bands of the target frequency band supported by the second radiator 121. Therefore, the second radiator 121 can support more sub-bands and realize the communication function of each sub-band.

[0110] The antenna assembly 10 further includes a second matching circuit M2 that can be incorporated into the antenna assembly 10 provided in any of the preceding embodiments. In the schematic diagram of this embodiment, the antenna assembly 10 further includes a second matching circuit M2 incorporated into the antenna assembly 10 provided in a preceding embodiment as an example. It should be understood that this should not be construed as a limitation on the embodiments of this application.

[0111] Furthermore, in one embodiment, the second matching circuit M2 is also used to adjust the transmission frequency band and the reception frequency band of the same sub-frequency band of the second radiator 121.

[0112] The antenna assembly 10 provided in this application embodiment further includes a second matching circuit M2. The second matching circuit M2 is also used to adjust the transmission frequency band and the reception frequency band of the same sub-frequency band of the second radiator 121. Therefore, the second radiator 121 can support communication of the transmission frequency band and the reception frequency band of the corresponding sub-frequency band.

[0113] For example, when the second radiator 121 of the second antenna 120 supports the B28 frequency band, the second matching circuit M2 is also used to adjust the transmission frequency band and the reception frequency band of the B28 frequency band of the second radiator 121; thereby, the communication function of the transmission frequency band and the reception frequency band of the B28 frequency band can be realized.

[0114] When the second radiator 121 of the second antenna 120 supports the B5 band, the second matching circuit M2 is also used to adjust the transmission frequency band and the reception frequency band of the B5 band of the second radiator 121; thereby, the communication function of the transmission frequency band and the reception frequency band of the B5 band can be realized.

[0115] When the second radiator 121 of the second antenna 120 supports the B8 band, the second matching circuit M2 is also used to adjust the transmission frequency band and the reception frequency band of the B8 band of the second radiator 121; thereby, the communication function of the transmission frequency band and the reception frequency band of the B8 band can be realized.

[0116] In one embodiment, the second matching circuit M2 is the same as the first matching circuit M1 described in the previous embodiments. The second matching circuit M2 is described with reference to the first matching circuit M1, and will not be repeated here.

[0117] Understandably, in another embodiment, the second matching circuit M2 is different from the first matching circuit M1. This application does not limit whether the second matching circuit M2 and the first matching circuit M1 are the same.

[0118] The function of the antenna assembly 10 provided in the embodiments of this application will be simulated next.

[0119] Please see Figure 12 , Figure 12 The image shows the standing wave diagram of the first antenna of the antenna assembly provided in one embodiment of this application in a free scene. The free scene is also called free space. In this embodiment, when the switching unit 1131 in the first matching circuit M1 switches, the first radiator 111 can correspond to different equivalent electrical lengths, allowing the first radiator 111 to support different sub-frequency bands. Specifically, when the first radiator 111 supports different sub-frequency bands, the resonant mode is a quarter-wavelength mode from the first free end 1112 to the first ground end 1111 of the first radiator 111. As can be seen from the previous description of the first radiator 111, the first radiator 111 is an inverted-F radiator (i.e., IFA). Therefore, the resonant mode when the first radiator 111 supports different sub-frequency bands is a quarter-wavelength IFA mode from the first free end 1112 to the first ground end 1111. In this embodiment, taking the target frequency band supported by the first antenna 110 of the antenna assembly 10 as an example of a low-frequency band, and illustrating the low-frequency band as including the B28, B5, and B8 bands, the following explanation is provided. In this embodiment, by switching the switching unit 1131 of the first matching circuit M1, the sub-frequency bands supported by the first antenna 110 are respectively the B28 band, the B5 band, and the B8 band. Among them, in Figure 12 In the graph, the horizontal axis represents frequency in GHz, and the vertical axis represents S-parameters in dB. Curve ① is the standing wave curve for the B28 band; curve ② is the standing wave curve for the B5 band; and curve ③ is the standing wave curve for the B8 band.

[0120] Understandably, the standing wave curve of the second antenna 120 in a free scene is the same as that of the first antenna 110 in a free scene, and will not be illustrated here.

[0121] Please see Figure 13 , Figure 13 This is an antenna efficiency diagram of the first antenna of the antenna assembly provided in one embodiment of the present application in a free scene. In this embodiment, the target frequency band supported by the first antenna 110 of the antenna assembly 10 is taken as a low-frequency band, and the low-frequency band includes the B28 band, B5 band, and B8 band as examples. Figure 13 In the diagram, the horizontal axis represents frequency in GHz; the vertical axis represents efficiency in dB. For ease of illustration, [the diagram is shown in the original text]. Figure 13 (a) in the image is in color. Figure 13 (b) in the middle is Figure 13 The grayscale image corresponding to (a) in the image. Figure 13 In (a): the red dashed line (curve ①) is the system radiation efficiency curve of the B5 band, the green dashed line (curve ②) is the system radiation efficiency curve of the B8 band, the blue dashed line (curve ③) is the system radiation efficiency curve of the B28 band; the orange solid line (curve ④) is the system total efficiency curve of the B5 band; the pink solid line (curve ⑤) is the system total efficiency curve of the B8 band; and the brown solid line (curve ⑥) is the system total efficiency curve of the B28 band.

[0122] Depend on Figure 13 It can be seen that the average total system efficiency of the first antenna 110 in the B28, B5 and B8 frequency bands is -7.5dB, which can well meet the requirements of the first antenna 110 as a low-frequency band transmitting antenna.

[0123] Understandably, the antenna curve of the second antenna 120 in a free scene is the same as that of the first antenna 110 in a free scene, and will not be illustrated here. The second antenna 120 can well meet the requirements of the second antenna 120 as a low-frequency band transmitting antenna.

[0124] Please see Figure 14 , Figure 14This is a schematic diagram illustrating an antenna assembly applied to an electronic device in one embodiment, with the electronic device held in the right hand. In this embodiment... Figure 14 In the diagram, the part of the user's finger touching the phone serves as a support for the electronic device 1. The placement, length, and feed point of the first radiator 111 of the first antenna 110 all affect the antenna performance when the first antenna 110 supports the target frequency band. Through feature simulation, it can be concluded that when the opening of the first radiator 111 faces upward and the antenna slot corresponding to the first free end 1112 of the first radiator 111 is centered (i.e., located at the waist position; please refer to the previous description of the distance from the first end face 112a to the second side 100b of the first radiator 111), when the user covers the first radiator 111 with their hand, the equivalent electrical length of the eigenmode required by the first radiator 111 can be better excited, resulting in a human enhancement effect.

[0125] Understandably, for the second antenna 120, the placement, length, and feed point of the second radiator 121 can all affect the antenna performance when the second antenna 120 supports the target frequency band. Through feature simulation, it can be concluded that when the opening of the second radiator 121 faces upwards, and the antenna slot corresponding to the first free end 1112 of the second radiator 121 is centered (i.e., located at the waist position; please refer to the previous description of the distance from the second end face 121a to the second side 100b of the second radiator 121), when the user covers the second radiator 121 with their hand, the equivalent electrical length of the eigenmode required by the second radiator 121 can be better excited, achieving a human body enhancement effect.

[0126] Please see Figure 15 , Figure 15 The efficiency curves of the first antenna provided in one embodiment of this application are shown in both right-handed and free states. Among them, in Figure 15In the diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency in dB. Curve ① represents the system radiation efficiency (System Rad. Efficiency) of the first antenna 110 supporting the B8 band in the free state (FS); curve ② represents the system radiation efficiency of the first antenna 110 supporting the B8 band in the right-handed state; curve ③ represents the system total efficiency (System Rad. Efficiency) of the first antenna 110 supporting the B8 band in the free state; and curve ④ represents the system total efficiency of the first antenna 110 supporting the B8 band in the right-handed state. As shown in the simulation diagram, at the B8 band (0.92 GHz): the system radiation efficiency in the right-handed state is -6.8 dB, while the system radiation efficiency in the free state is -6 dB; the system radiation efficiency in the right-handed state is 0.8 dB higher than that in the free state; the system radiation efficiency in the right-handed state not only does not decrease but also enhances it, and the beamwidth in the right-handed state is wider than that in the free state.

[0127] In related technologies, when the first antenna 110 is placed at the bottom as a transmitting antenna, and when the first antenna 110 supports the B8 band, the system efficiency in the handheld state is reduced by 7dB to 8dB compared to the system efficiency in the free state.

[0128] Therefore, it can be seen that when the first antenna 110 of the antenna assembly 10 provided in this embodiment supports a sub-band of the target frequency band, the system radiation efficiency in the handheld state not only does not decrease, but also has an enhanced effect. Moreover, the wavelength in the right-handed handheld state is wider than in the free state. Therefore, it has better antenna efficiency and a wider bandwidth. Therefore, the first antenna 110 is also called the right-hand enhanced antenna.

[0129] Please refer to the following: Figure 16 and Figure 17 , Figure 16 A schematic diagram of the electronic device using the antenna assembly according to one embodiment of this application when the left head and hand are positioned. Figure 17 The efficiency curves of the first antenna of the antenna assembly provided in one embodiment of this application are shown in the left-handed and free states. Figure 16 (a) in the image is in color. Figure 16 (b) in the middle is Figure 16 The grayscale image of (a) in the image. Figure 16 In (a) of the diagram, the blue portion represents the support bracket for the electronic device 1. Wherein, in Figure 17In the graph, the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency in dB. Curve ① represents the system radiation efficiency of the first antenna 110 supporting the B8 band in the left head-and-hand (BHHL) state; curve ② represents the system radiation efficiency of the first antenna 110 supporting the B8 band in the free state (FS); curve ③ represents the overall system efficiency of the first antenna 110 supporting the B8 band in the left head-and-hand (BHHL) state; and curve ④ represents the overall system efficiency of the first antenna 110 supporting the B8 band in the free state.

[0130] As shown in the simulation diagram, at the B8 band (0.92GHz): the system radiation efficiency in the left-head-and-hand posture is -8.67dB, while the system radiation efficiency in the free state is -6.9dB, a decrease of only 1.77dB. In related technologies, when the first antenna 110 is placed at the bottom as a transmitting antenna, and when the first antenna 110 supports the B8 band, the system efficiency in the left-head-and-hand posture is 7dB to 8dB lower than that in the free state.

[0131] Based on the same principle, in a left-handed scenario, the second antenna 120, in a sub-band of the target frequency band (taking the B8 band as an example), exhibits a 0.8 dB higher system efficiency in the handheld state compared to the free state. The system efficiency in the handheld state not only does not decrease but also enhances it. Therefore, the second antenna 120 is also referred to as the left-handed enhanced antenna.

[0132] Correspondingly, based on the same principle, in the scenario of right-handed posture (also known as right-handed hand position), the second antenna 120 supports the sub-band of the target frequency band (taking the B8 band as an example). The system efficiency reduction of the sub-band is relatively low, for example, 2dB.

[0133] In summary, the antenna assembly 10 provided in this application embodiment can achieve dual enhancement of handheld signal in the target frequency band, and can achieve the technical effect of dual improvement of head and hand reduction in the target frequency band.

[0134] This application also provides an electronic device 1 according to one embodiment. Please refer to... Figure 18 , Figure 19 and Figure 20 , Figure 18 A perspective view of an electronic device provided according to an embodiment of this application; Figure 19 for Figure 18 A schematic diagram of the electronic device shown from another perspective; Figure 20 for Figure 19 A partial schematic diagram of the electronic device shown. Figure 18 This is a rear view of electronic device 1. Figure 19 This is a front view of electronic device 1. The electronic device 1 includes, but is not limited to, devices capable of transmitting and receiving electromagnetic wave signals such as mobile phones, telephones, televisions, tablets, personal computers, laptops (PCs), in-vehicle devices, headphones, watches, and wearable devices. In the schematic diagrams of this application's embodiments, a mobile phone is used as an example of electronic device 1 for illustration; it should be understood that this should not be construed as a limitation on the electronic device 1 provided in the embodiments of this application. This is in conjunction with the schematic diagrams of the antenna assembly 10 provided in any of the preceding embodiments and... Figure 18 The electronic device 1 includes the antenna assembly 10 described in any of the preceding embodiments. The antenna assembly 10 is described previously and will not be repeated here.

[0135] The electronic device 1 provided in this application includes an antenna assembly 10. The first radiator 111 of the first antenna 110 of the antenna assembly 10 is disposed corresponding to the first side 100a, and the second radiator 121 of the second antenna 120 is disposed corresponding to the second side 100b. The second side 100b is disposed opposite to the first side 100a. It can be seen that the positions of the first radiator 111 and the second radiator 121 are relatively far apart. Therefore, the isolation between the first antenna 110 and the second antenna 120 is good, and the antenna efficiency of the first antenna 110 and the second antenna 120 when supporting the target frequency band is good.

[0136] Furthermore, the first radiator 111 is positioned corresponding to the first side 100a of the ground electrode 100, that is, the first radiator 111 is positioned corresponding to the long side of the ground electrode 100. When the first antenna 110 supports the target frequency band, it can excite the resonant current (also called lateral current) of the ground electrode 100 along the extension direction of the second side 100b. When the antenna assembly 10 is applied in the electronic device 1, if the electronic device 1 is in portrait mode, when the first radiator 111 of the first antenna 110 is blocked by the user's hand, it will better excite the equivalent electrical length of the resonant mode of the first radiator 111 supporting the target frequency band, thereby achieving a human body enhancement effect, and thus enabling the first antenna 110 to have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the first radiator 111 of the first antenna 110, the user's hand effectively lengthens the width of the ground electrode 100 when supporting the target frequency band, which can better excite the eigenmode of the ground electrode 100 (i.e., the transverse mode of the resonant current along the second direction), further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0137] Furthermore, the second radiator 121 is positioned corresponding to the third side 100c of the ground electrode 100, that is, the second radiator 121 is positioned corresponding to the long side of the ground electrode 100. When the second antenna 120 supports the target frequency band, it can excite the resonant current (also called lateral current) of the ground electrode 100 along the extension direction of the second side 100b. When the antenna assembly 10 is applied in the electronic device 1, if the electronic device 1 is in portrait mode, when the second radiator 121 of the second antenna 120 is blocked by the user's hand, it will better excite the equivalent electrical length of the resonant mode of the second radiator 121 supporting the target frequency band, thereby achieving a human body enhancement effect, and thus making the second antenna 120 have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the second radiator 121 of the second antenna 120, the user's hand is equivalent to lengthening the width of the ground electrode 100 when supporting the target frequency band, further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0138] The electronic device 1 provided in this application embodiment further includes a display screen 20, a mid-frame 30, and a battery cover 40. The display screen 20 and the battery cover 40 are respectively disposed on opposite sides of the mid-frame 30. The display screen 20 is the component in the electronic device 1 that implements the display function. The display screen 20 may or may not have a touch function. The battery cover 40 may be a metal battery cover 40 or a non-metal battery cover 40. The non-metal battery cover 40 may be, but is not limited to, ceramic or glass. In other embodiments, part of the battery cover 40 is metal, and the other part is non-metallic (such as ceramic or glass). The battery cover 40 and the mid-frame 30 form a receiving space to receive the battery, circuit board, etc. It is understood that the description of the electronic device 1 in this application embodiment is only one embodiment of the electronic device 1 to which the antenna assembly 10 is applied, and should not be construed as a limitation on the antenna assembly 10 provided in this application embodiment.

[0139] Please see Figure 20 In one embodiment, the first radiator 111 of the first antenna 110 in the antenna assembly 10 is a frame radiator. Specifically, in one embodiment, the middle frame 30 includes a frame body 310 and a frame portion 320 surrounding the periphery of the frame body 310. The frame body 310 is a ground electrode. The first radiator 111 is a frame radiator formed on the frame portion 320.

[0140] The first radiator 111 is a frame radiator. Thus, when the electronic device 1 is held by a human hand or blocked by a human head, it is equivalent to loading a preset medium, which can improve the antenna performance of the antenna assembly 10.

[0141] When the antenna assembly 10 further includes a second antenna 120, the second radiator 121 of the second antenna 120 is a frame radiator. Specifically, in one embodiment, the middle frame 30 includes a frame body 310 and a frame portion 320 surrounding the periphery of the frame body 310. The second radiator 121 is a frame radiator formed on the frame portion 320. Thus, when the electronic device 1 is held by a human hand or blocked by a human head, it is equivalent to loading a preset medium, which can improve the antenna performance of the antenna assembly 10 in the target frequency band.

[0142] Referring to the preceding figures and please see... Figure 18 and Figure 19 The electronic device 1 is composed of a first side 1a, a bottom side 1b, and a second side 1c that are bent and connected in sequence. The second side 1c is disposed opposite to the first side 1a, and the lengths of the second side 1c and the first side 1a are both greater than the length of the bottom side 1b.

[0143] The first antenna 110 of the antenna assembly 10 is disposed corresponding to the first side 1a, and the second antenna 120 of the antenna assembly 10 is disposed corresponding to the second side 1c.

[0144] In this embodiment, the first antenna 110 of the antenna assembly 10 is disposed corresponding to the first side 1a, and the second antenna 120 of the antenna assembly 10 is disposed corresponding to the second side 1c. This makes the positions of the first radiator 111 and the second radiator 121 relatively far apart. Therefore, the isolation between the first antenna 110 and the second antenna 120 is good, and the antenna efficiency of the first antenna 110 and the second antenna 120 when supporting the target frequency band is good.

[0145] Furthermore, the first radiator 111 is positioned corresponding to the first side 100a of the ground electrode 100, that is, the first radiator 111 is positioned corresponding to the long side of the ground electrode 100, and the first antenna 110 of the antenna assembly 10 is positioned corresponding to the first side 1a. When the first antenna 110 supports the target frequency band, it can excite the resonant current (also called lateral current) of the ground electrode 100 along the extension direction of the second side 100b. When the antenna assembly 10 is applied in the electronic device 1, if the electronic device 1 is in portrait mode, when the first radiator 111 of the first antenna 110 is blocked by the user's hand, it will better excite the equivalent electrical length of the resonant mode of the first radiator 111 supporting the target frequency band, thereby achieving a human body enhancement effect, and thus making the first antenna 110 have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the first radiator 111 of the first antenna 110, the user's hand effectively lengthens the width of the ground electrode 100 when supporting the target frequency band, which can better excite the eigenmode of the ground electrode 100 (i.e., the transverse mode of the resonant current along the second direction), further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0146] Furthermore, the second radiator 121 is positioned corresponding to the third side 100c of the ground electrode 100, that is, the second radiator 121 is positioned corresponding to the long side of the ground electrode 100, and the second antenna 120 of the antenna assembly 10 is positioned corresponding to the second side 1c. When the second antenna 120 supports the target frequency band, it can excite the resonant current (also known as the lateral current) of the ground electrode 100 along the extension direction of the second side 100b. When the antenna assembly 10 is applied in the electronic device 1, if the electronic device 1 is in portrait mode, and the second radiator 121 of the second antenna 120 is blocked by the user's hand, it will better excite the equivalent electrical length of the resonant mode of the second radiator 121 supporting the target frequency band, thereby achieving a human body enhancement effect, and thus enabling the second antenna 120 to have better antenna efficiency in the target frequency band. Furthermore, when the user's hand blocks the second radiator 121 of the second antenna 120, the user's hand effectively lengthens the width of the ground pole 100 when supporting the target frequency band, thereby further enabling the antenna assembly 10 to have better antenna performance in the target frequency band.

[0147] Please see Figure 21 , Figure 21This is a circuit diagram of an electronic device provided according to an embodiment of this application. The electronic device 1 further includes a processor 50. The processor 50 controls one of the first antenna 110 and the second antenna 120 to be a working antenna. When the first antenna 110 is a working antenna, if the signal value of the second antenna 120 supporting the target frequency band minus the signal value of the first antenna 110 supporting the target frequency band is greater than or equal to a preset threshold, the processor 50 switches the current working antenna to the second antenna 120.

[0148] The preset threshold can be, but is not limited to, 2dB or 3dB. When the signal value of the second antenna 120 supporting the target frequency band minus the signal value of the first antenna 110 supporting the target frequency band is greater than or equal to the preset threshold, the processor 50 switches the current operating antenna to the second antenna 120. This indicates that the antenna performance of the second antenna 120 supporting the target frequency band is better than that of the first antenna 110 supporting the target frequency band. The processor 50 switches the current operating antenna to the second antenna 120, thereby enabling the antenna assembly 10 to have better communication performance in the target frequency band.

[0149] Furthermore, in another embodiment, the processor 50 controls one of the first antenna 110 and the second antenna 120 to be a working antenna based on the attitude of the electronic device 1, wherein the antenna performance of the first antenna 110 when supporting the target frequency band is greater than the antenna performance of the other of the first antenna 110 and the second antenna 120 when supporting the target frequency band.

[0150] As described above, the first antenna 110 is a right-hand enhanced antenna, and the second antenna 120 is a left-hand enhanced antenna. The processor 50 controls one of the first antenna 110 and the second antenna 120 to be the operating antenna based on whether the user holds the electronic device 1 with their right or left hand. The antenna performance of the first antenna 110 supporting the target frequency band is superior to that of the other antenna 120 supporting the target frequency band. This allows the antenna assembly 10 to have better communication performance in the target frequency band.

[0151] In one embodiment, when the user holds the electronic device 1 with their left hand, the processor 50 controls the antenna assembly 10 to operate with the second antenna 120 when supporting the target frequency band; when the user holds the electronic device 1 with their right hand, the processor 50 controls the antenna assembly 10 to operate with the first antenna 110 when supporting the target frequency band. This ensures that the antenna assembly 10 has good antenna performance in the target frequency band regardless of whether the user holds the electronic device 1 with their right or left hand.

[0152] For example, compared to the antenna assembly 10 in related technologies, the antenna assembly 10 provided in this embodiment, when the user holds the electronic device 1 with their right hand, allows the processor 50 to control the antenna assembly 10 to operate with the first antenna 110 when supporting the target frequency band, which can enhance the signal by at least 0.8 dB in the target frequency band (e.g., a low-frequency band). Compared to the antenna assembly 10 in related technologies, the antenna assembly 10 provided in this embodiment, when the user holds the electronic device 1 with their left hand, allows the processor 50 to control the antenna assembly 10 to operate with the second antenna 120 when supporting the target frequency band, which can enhance the signal by at least 0.8 dB in the target frequency band (e.g., a low-frequency band). Thus, a dual-enhancement technology effect for low-frequency band handheld use can be achieved, improving the user's communication experience under weak signal conditions when using the target frequency band for communication.

[0153] Furthermore, in another embodiment, as described above, in the left-head-and-hand posture (also known as the left-head-and-hand state), the performance of the first antenna 110 of the antenna assembly 10 of the electronic device 1 in supporting the target frequency band is better than that of the second antenna 120 of the antenna assembly 10 in supporting the target frequency band. Specifically, in the left-head-and-hand posture (also known as the left-head-and-hand state), the bandwidth reduction of the first antenna 110 of the antenna assembly 10 of the electronic device 1 in the target frequency band is about 2dB, which is an improvement of 3dB to 4dB compared to related technologies. Correspondingly, as described above, in the right-head-and-hand posture (also known as the right-head-and-hand state), the performance of the second antenna 120 of the antenna assembly 10 of the electronic device 1 in supporting the target frequency band is better than that of the first antenna 110 of the antenna assembly 10 in supporting the target frequency band. Specifically, in the right-head-and-hand posture (also known as the right-head-and-hand state), the bandwidth reduction of the second antenna 120 of the antenna assembly 10 of the electronic device 1 is about 2dB, which is an improvement compared to related technologies.

[0154] Therefore, when the electronic device 1 is in a left-head-and-hand posture, the processor 50 controls the first antenna 110 to be the working antenna. Specifically, when the electronic device 1 is in a left-head-and-hand posture, if the current working antenna of the antenna assembly 10 is the first antenna 110, the processor 50 keeps the first antenna 110 as the working antenna. When the electronic device 1 is in a left-head-and-hand posture, if the current working antenna of the antenna assembly 10 is the second antenna 120, the processor 50 switches the first antenna 110 to be the working antenna.

[0155] When the electronic device 1 is in a right-head-and-hand position, the processor 50 controls the second antenna 120 to be the working antenna. Specifically, when the electronic device 1 is in a right-head-and-hand position, if the working antenna of the antenna assembly 10 for the day is the second antenna 120, then the processor 50 keeps the second antenna 120 as the working antenna. When the electronic device 1 is in a right-head-and-hand position, if the current working antenna of the antenna assembly 10 is the first antenna 110, then the processor 50 switches the second antenna 120 to be the working antenna.

[0156] Therefore, the electronic device 1 provided in this application embodiment has a processor 50 that can control one of the first antenna 110 and the second antenna 120 to operate according to the posture of the electronic device 1. The antenna performance of the first antenna 110 when supporting the target frequency band is improved compared to the antenna performance of the other antenna 120 when supporting the target frequency band. This achieves the technical effect of increasing the reduction of head and hand amplitude under the target frequency band, thereby improving the user's communication experience under weak signal conditions.

[0157] The above description represents some embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes a ground electrode, a first antenna, and a second antenna; The ground pole includes a first side, a second side, and a third side that are bent and connected in sequence, wherein the third side is arranged opposite to the first side, and the lengths of the first side and the third side are both greater than the length of the second side; The first antenna includes a first radiator and a first feed source. The first radiator has a first feed point. The first radiator is disposed corresponding to the first side. The first feed source is electrically connected to the first feed point to excite the first radiator to support the target frequency band. The second antenna includes a second radiator and a second feed source. The second radiator has a second feed point and is disposed on a third side. The second feed source is electrically connected to the second radiator to excite the second radiator to support the target frequency band.

2. The antenna assembly as claimed in claim 1, characterized in that, The first radiator also has a first ground terminal and a first free terminal, wherein the first ground terminal is electrically connected to the ground electrode to ground, the first feed point is electrically connected to the first feed source, the first free terminal is away from the second side relative to the first ground terminal, and the quarter-wavelength mode from the first ground terminal to the first free terminal of the first radiator supports the target frequency band.

3. The antenna assembly as described in claim 2, characterized in that, The first grounding terminal has a first grounding point, which is electrically connected to the ground electrode, wherein the distance d11 from the first grounding point to the second side satisfies: 55mm≤d11≤70mm; The first free end has a first end face away from the first ground end, and the distance d12 from the first end face to the second side satisfies: 105mm≤d12≤120mm.

4. The antenna assembly as described in claim 2, characterized in that, The antenna assembly also includes: The first matching circuit is connected to the first feed point P1 by the first feed source. The first matching circuit is used to adjust the sub-frequency band in the target frequency band supported by the first radiator.

5. The antenna assembly as described in claim 4, characterized in that, The first matching circuit includes: The first capacitor is connected to the first feed point by the first feed source.

6. The antenna assembly as claimed in claim 5, characterized in that, The first matching circuit further includes: A switching unit includes a common terminal and multiple connection terminals, wherein each connection terminal has a connected state electrically connected to the common terminal and a disconnected state disconnected from the common terminal, and the multiple connection terminals cooperate to enable the switching unit to have multiple states; and Multiple matching branches, one end of each matching branch is connected to the connection terminal, and different matching branches are connected to different connection terminals, with the other end of each matching branch grounded; When the switching unit is in different states, the first antenna supports different sub-bands in the target frequency band.

7. The antenna assembly as claimed in claim 6, characterized in that, When the target frequency band is a low-frequency band, and when the common terminal is disconnected from all connection terminals, the first antenna supports the B28 frequency band of the low-frequency band.

8. The antenna assembly as claimed in claim 7, characterized in that, The plurality of connection terminals include a first connection terminal, and the plurality of matching branches include: A first inductor, one end of which is electrically connected to the first connection terminal, and the other end of which is grounded; When the common terminal is electrically connected to the first connection terminal, and the common terminal is electrically disconnected from all other connection terminals except the first connection terminal, the first antenna supports the B5 band of the low-frequency band.

9. The antenna assembly as claimed in claim 8, characterized in that, The plurality of connection terminals further includes a second connection terminal; the plurality of matching branches further includes: The second capacitor has one end electrically connected to the second connection terminal and the other end grounded. When the common terminal is electrically connected to the second connection terminal, and the common terminal is electrically disconnected from all other connection terminals except the second connection terminal, the first antenna supports the B8 band of the low-frequency band.

10. The antenna assembly as claimed in claim 9, characterized in that, When the common terminal is disconnected from all connection terminals, the first antenna supports the B28 frequency band of the low-frequency band for transmission. The plurality of connection terminals further includes a third connection terminal; the plurality of matching branches further includes: A third capacitor, one end of which is electrically connected to the third connection terminal, and the other end of which is grounded; Specifically, when the common terminal is electrically connected to the third connection terminal, and the common terminal is electrically disconnected from all other connection terminals except the third connection terminal, the first antenna supports the receiving frequency band of the B28 band.

11. The antenna assembly as claimed in claim 10, characterized in that, When the common terminal is electrically connected to the first connection terminal, and the common terminal is electrically disconnected from all other connection terminals except the first connection terminal, the first antenna supports the B5 band transmission frequency band in the low-frequency band. The plurality of connection terminals further includes a fourth connection terminal; the plurality of matching branches further includes: The second inductor has one end electrically connected to the fourth connection terminal and the other end grounded. Specifically, when the common terminal is electrically connected to the fourth connection terminal, and the common terminal is electrically disconnected from all other connection terminals except the fourth connection terminal, the first antenna supports the receiving frequency band of the B5 band.

12. The antenna assembly as claimed in claim 11, characterized in that, When the common terminal is electrically connected to the second connection terminal, and the common terminal is electrically disconnected from all other connection terminals except the second connection terminal, the first antenna supports the transmission frequency band of the B8 band in the low-frequency band. When both the third connection terminal and the fourth connection terminal are electrically connected to the common terminal, the first antenna supports the receiving frequency band of the B8 band.

13. The antenna assembly as claimed in claim 5, characterized in that, The first matching circuit includes: The third inductor has one end electrically connected to the first feed point and the other end grounded.

14. The antenna assembly as described in any one of claims 1-13, characterized in that, The second radiator has a second ground terminal, a second feed point and a second free terminal arranged in sequence. The second ground terminal is electrically connected to the ground electrode to ground, the second feed point is electrically connected to the second feed source, and the second free terminal is away from the second side relative to the second ground terminal. The quarter-wavelength mode from the second ground terminal to the second free terminal of the second radiator supports the target frequency band.

15. The antenna assembly as claimed in claim 14, characterized in that, The second grounding terminal has a second grounding point, which is electrically connected to the ground electrode, wherein the distance d21 from the second grounding point to the second side satisfies: 55mm≤d21≤70mm; The second free end has a second end face away from the second ground end, and the distance d22 from the second end face to the second side satisfies: 105mm≤d22≤120mm.

16. The antenna assembly as claimed in claim 1, characterized in that, The antenna assembly also includes: The second matching circuit is electrically connected to the second feed point, and the second matching circuit is used to adjust the sub-band in the target frequency band supported by the second radiator.

17. The antenna assembly as claimed in claim 16, characterized in that, The second matching circuit is also used to adjust the transmission and reception frequency bands of the same sub-band of the second radiator.

18. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-17.

19. The electronic device as claimed in claim 18, characterized in that, The electronic device package has a first side, a bottom side, and a second side that are bent and connected in sequence. The second side is positioned opposite to the first side, and the lengths of both the second side and the first side are greater than the length of the bottom side. The first antenna of the antenna assembly is disposed on the first side, and the second antenna of the antenna assembly is disposed on the second side.

20. The electronic device as claimed in claim 19, characterized in that, The electronic device also includes: A processor that controls one of the first antenna and the second antenna to be a working antenna; When the first antenna is the working antenna, if the signal value of the second antenna supporting the target frequency band minus the signal value of the first antenna supporting the target frequency band is greater than or equal to a preset threshold, the processor switches the current working antenna to the second antenna.

21. The electronic device as claimed in claim 19, characterized in that, The electronic device also includes: The processor controls one of the first antenna and the second antenna to be a working antenna based on the attitude of the electronic device, wherein the antenna performance of the first antenna supporting the target frequency band is greater than the antenna performance of the other of the first antenna and the second antenna supporting the target frequency band.

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