Antenna assembly and wearable device

Abstract

The invention provides an antenna assembly and wearable equipment. The antenna assembly comprises a radiator, and the radiator comprises a first radiation branch knot and a second radiation branch knot. The first radiation branch knot comprises a first radiation part and a second radiation part which are connected in a bending manner, the first radiation part is provided with a feeding point, the feeding point is used for receiving an excitation signal so as to excite a first current in the first radiation branch knot, the first current comprises a first sub-current distributed in the first radiation part and a second sub-current distributed in the second radiation part, and the first sub-current comprises a second sub-current distributed in the second radiation part; the flow directions of the first sub-current and the second sub-current are vertical; the second radiation branch knot and the first radiation branch knot are arranged at an interval, the second radiation branch knot is provided with a grounding point, the grounding point is used for being electrically connected to the ground pole, the second radiation branch knot is excited by the excitation signal to generate a second current, the second current comprises a plurality of sub-currents with different flow directions, and the first current and the second current are matched to support a plurality of working frequency bands. The antenna assembly provided by the embodiment of the invention is good in communication performance.

Description

Technical Field

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

[0002] With the development of communication technology, wearable devices with communication functions such as virtual reality (VR) devices are becoming more and more popular and more powerful. Wearable devices usually include antenna components to realize the communication function of wearable devices. However, the communication performance of antenna components in wearable devices in related technologies is not good enough and there is still room for improvement. Summary of the invention

[0003] In a first aspect, the present application provides an antenna assembly, wherein the antenna assembly includes a radiator, and the radiator includes:

[0004] A first radiation branch, wherein the first radiation branch comprises a first radiation portion and a second radiation portion connected in a bent manner, wherein the first radiation portion has a feeding point, and the feeding point is used to receive an excitation signal to excite a first current in the first radiation branch, wherein the first current comprises a first sub-current distributed in the first radiation portion and a second sub-current distributed in the second radiation portion, and the flow directions of the first sub-current and the second sub-current are perpendicular;

[0005] A second radiation branch, the second radiation branch is spaced apart from the first radiation branch, the second radiation branch has a grounding point, the grounding point is used to be electrically connected to the ground electrode, the second radiation branch is excited by the excitation signal to generate a second current, wherein the second current includes a plurality of sub-currents flowing in different directions, wherein the first current cooperates with the second current to support a plurality of operating frequency bands.

[0006] In a second aspect, an embodiment of the present application provides a wearable device, wherein the wearable device includes the antenna assembly as described in the first aspect.

[0007] In summary, the first radiation branch excites the first sub-current and the second sub-current, the second radiation branch excites the second current and the second current includes multiple sub-currents, and the multiple sub-currents cooperate with the first sub-current and the second sub-current to support more working modes, thereby enabling the antenna assembly to support more working frequency bands. It can be seen that the communication performance of the antenna assembly is better. In addition, compared with using more or longer radiators to support more frequency bands, the radiator provided in the embodiment of the present application includes the first radiation branch and the second radiation branch to support more working frequency bands. Therefore, the radiator provided in the embodiment of the present application is smaller in size. In other words, the radiator of the antenna assembly provided in the embodiment of the present application is smaller in size and has better communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 A schematic diagram of the structure of an antenna assembly provided in one embodiment of the present application;

[0010] Figure 2 for Figure 1 A schematic diagram of current flow in the antenna assembly shown;

[0011] Figure 3 for Figure 1 A schematic diagram showing the identification of various parts of the antenna assembly;

[0012] Figure 4 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0013] Figure 5 A schematic diagram of an antenna assembly provided in yet another embodiment of the present application;

[0014] Figure 6 for Figure 5 A schematic diagram of current flow of the antenna assembly shown in ;

[0015] Figure 7 for Figure 5 A schematic diagram showing the identification of various parts of the antenna assembly;

[0016] Figure 8 for Figure 7 A schematic diagram of the dimensions of some components of the antenna assembly shown in ;

[0017] Fig. 9 for Figure 1 A cross-sectional schematic diagram of the radio frequency coaxial line provided in along line II;

[0018] Fig.10 A cross-sectional schematic diagram of a radio frequency coaxial line provided in another embodiment of the present application;

[0019] Fig.11 A schematic diagram of an antenna assembly provided in another embodiment of the present application;

[0020] Fig.12 for Figure 7 A schematic diagram of the dimensions of the radiator in the antenna assembly shown;

[0021] Fig.13 A three-dimensional schematic diagram of a wearable device provided in one embodiment of the present application;

[0022] Fig.14 In one embodiment Fig.13 A schematic diagram of a portion of the structure of the wearable device shown in ;

[0023] Fig.15 for Fig.14 The enlarged schematic diagram of II in the middle;

[0024] Fig.16 In another embodiment Fig.13 A schematic diagram of a portion of the structure of the wearable device shown in ;

[0025] Fig.17 for Fig.16 The enlarged schematic diagram of the III in the middle;

[0026] Fig.18 for Fig.14 A schematic diagram of another angle of the wearable device shown in ;

[0027] Fig.19 for Fig.18 Schematic diagram of the enlarged structure at IV in the middle;

[0028] Fig. 20 for Fig.16 A schematic diagram of the wearable device shown in another angle;

[0029] Fig.21 for Fig. 20 Schematic diagram of the enlarged structure at V in the middle;

[0030] Fig. 22 A performance chart of the antenna assembly provided in one embodiment of the present application in the WiFi 5G frequency band;

[0031] Fig.23 Performance table of the antenna assembly provided in one embodiment of the present application in the WiFi 2.4G frequency band;

[0032] Fig.24 This is a performance table of a MIMO antenna provided in one embodiment of the present application.

[0033] Description of main component numbers:

[0034] Wearable device 1, antenna assembly 10, housing 30, functional assembly 50;

[0035] Radiator 110, first radiation branch 111, second radiation branch 112, first radiation portion 1111, second radiation portion 1112, third radiation portion 1113, feeding point P1, grounding point P2, first end 111a, second end 111b, first side 111c, second side 111d, third side 111e, connecting side 111f, fourth side 112a, fifth side 112b;

[0036] RF coaxial line 130, inner core 131, first insulating layer 132, grounded outer core 133, second insulating layer 134;

[0037] Circuit board 150, feed source 151, conductive member 510;

[0038] First current I1, first sub-current I11, second sub-current I12, second current I2, fourth sub-current I21, fifth sub-current I22, sixth sub-current I23, third sub-current I13, first direction D1, second direction D2. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In addition, the reference to "embodiment" or "implementation method" in this article means that the specific features, structures or characteristics described in conjunction with the embodiments or implementation methods may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] Please also read Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of an antenna assembly provided in one embodiment of the present application; Figure 2 for Figure 1Schematic diagram of current flow of antenna assembly shown. The antenna assembly 10 includes a radiator 110. The radiator 110 includes a first radiating branch 111 and a second radiating branch 112. The first radiating branch 111 includes a first radiating portion 1111 and a second radiating portion 1112 connected in a bent manner, and the first radiating portion 1111 has a feeding point P1. In order to conveniently illustrate the first radiating portion 1111 and the second radiating portion 1112, the dividing line between the first radiating portion 1111 and the second radiating portion 1112 is illustrated in the figure with a dotted line (i.e., the dotted line next to 111a). In subsequent corresponding schematic diagrams, the dividing line between each radiating portion is also illustrated with a dotted line. The feeding point P1 is used to receive an excitation signal to excite a first current I1 in the first radiating branch 111, wherein the first current I1 includes a first sub-current I11 distributed in the first radiating portion 1111 and a second sub-current I12 distributed in the second radiating portion 1112, and the flow direction of the first sub-current I11 is perpendicular to that of the second sub-current I12. The second radiation branch 112 is spaced apart from the first radiation branch 111, and the second radiation branch 112 has a grounding point P2, and the grounding point P2 is used to be electrically connected to the ground. The second radiation branch 112 is excited by the excitation signal to generate a second current I2, wherein the second current I2 includes a plurality of sub-currents flowing in different directions, wherein the first current I1 cooperates with the second current I2 to support a plurality of operating frequency bands.

[0041] The first radiation branch 111 may be, but is not limited to, a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. The first radiation branch 111 may be flexibly deformable or non-flexibly deformable, which is not limited in the antenna assembly 10 provided in the embodiment of the present application. When the first radiation branch 111 is flexibly deformable, it can be easily installed in the housing 30 and other parts of the device (e.g., wearable device 1) to which the antenna assembly 10 is applied, and can change with the shape of different parts of the housing 30. When the first radiation branch 111 is non-flexibly deformable, the first radiation branch 111 may also be set in the housing 30 and other parts of the device to which the antenna assembly 10 is applied.

[0042] The second radiation branch 112 may be, but is not limited to, a laser direct structuring (LDS) radiator, or a flexible printed circuit (FPC) radiator, or a print direct structuring (PDS) radiator, or a metal branch radiator. The material of the second radiation branch may be the same as or different from the type of the first radiation branch. When the second radiation branch 112 is flexible and deformable, it can be easily installed in the housing 30 and other parts of the device (for example, the wearable device 1) to which the antenna assembly 10 is applied, and can change with the shape of different parts of the housing 30. When the second radiation branch 112 is non-flexible and deformable, the second radiation branch 112 can also be set in the housing 30 and other parts of the device to which the antenna assembly 10 is applied.

[0043] In the schematic diagram of this embodiment, the first radiating portion 1111 is a radiating portion in the vertical direction, and the second radiating portion 1112 is a radiating portion in the horizontal direction. For the convenience of description, the first radiating portion 1111 extends along the first direction D1, and the second radiating portion 1112 extends along the second direction D2, wherein the first direction D1 is perpendicular to the second direction D2, or approximately perpendicular. In one embodiment, the angle between the first direction D1 and the second direction D2 is 85° to 95°. It should be noted that the ranges indicated in this application include two endpoints. The angle a between the first direction D1 and the second direction D2 is 85° to 95°, that is, 85°≤a≤95°. Among them, the angle a can be but is not limited to 85°, or 86°, or 87°, or 88°, or 89°, or 90°, or 91°, or 92°, or 93°, or 94°, or 95°.

[0044] The first sub-current I11 is distributed in the first radiation part 1111, and the second sub-current I12 is distributed in the second radiation part 1112. The flow direction of the first sub-current I11 is perpendicular to the flow direction of the second sub-current I12. Therefore, the first sub-current I11 can excite a working mode, and the second sub-current I12 can excite a working mode. In this embodiment, the first direction D1 is perpendicular to the second direction D2 as an example. The flow direction of the first sub-current I11 is along the first direction D1, and the flow direction of the second sub-current I12 is along the second direction D2. The flow direction of the first sub-current I11 is perpendicular to the flow direction of the second sub-current I12. In this embodiment, the length of the first radiation part 1111 is different from the length of the second radiation part 1112. Therefore, the working frequency band corresponding to the working mode excited by the first sub-current I11 is different from the working frequency band corresponding to the working mode excited by the second sub-current I12. In other words, the working frequency bands supported by the first radiation part 1111 and the second radiation part 1112 are different. In this embodiment, the length of the first radiating portion 1111 is greater than the length of the second radiating portion 1112, and therefore, the operating frequency supported by the first radiating portion 1111 is less than the operating frequency supported by the second radiating portion 1112. It can be understood that in other embodiments, the length of the first radiating portion 1111 may also be less than the length of the second radiating portion 1112, and accordingly, the operating frequency supported by the first radiating portion 1111 is greater than the operating frequency supported by the second radiating portion 1112.

[0045] It should be noted that the current on the radiator is related to the shape of the radiator, that is, the current distribution on the radiator depends on the shape of the radiator. In this embodiment, the first radiating branch 111 includes a first radiating portion 1111 and a second radiating portion 1112 connected in a bent manner. Therefore, the first radiating portion 1111 is excited to generate a first sub-current I11, and the second radiating portion 1112 is excited to generate a second sub-current I12. Normally, the direction of the first sub-current I11 excited by the first radiating portion 1111 is the same as the extension direction of the first radiating portion 1111; the direction of the second sub-current I12 excited on the second radiating portion 1112 is the same as the extension direction of the second radiating portion 1112. In this embodiment, both the first sub-current I11 and the second sub-current I12 exist, and it should not be understood that the first radiating branch 111 has a vector on which the first sub-current I11 and the second sub-current I12 are superimposed. Normally, the first radiating portion 1111 is excited to generate the first sub-current I11 to support the working frequency band a, and the second radiating portion 1112 is excited to generate the second sub-current I12 to support the working frequency band b. Then, the working mode in which the first radiating portion 1111 is excited to generate the first sub-current I11 to support the working frequency band a and the working mode in which the second radiating portion 1112 is excited to generate the second sub-current I12 to support the working frequency band b can be regarded as independent of each other, the working frequency band a and the working frequency band b are independent, and the directional pattern corresponding to the working frequency band a and the directional pattern corresponding to the working frequency band b can be synthesized.

[0046] The second radiation branch 112 is excited to generate the second current I2, and the flow direction of each sub-current in the second current I2 is related to the shape of the second radiation branch 112. In this embodiment, the shape of the second radiation branch 112 is a rectangle as an example for illustration. Therefore, three sub-currents are excited on the second radiation branch 112. It can be understood that in the antenna assembly 10 provided in other embodiments, as the shape of the second radiation branch 112 is different, the second radiation branch 112 excites sub-currents of other numbers and other directions.

[0047] Each sub-current on the second radiation branch 112 is used to stimulate a working mode, and each working mode supports an operating frequency. In addition, each sub-current on the second radiation branch 112 also cooperates with the first sub-current I11 of the first radiation part 1111 to support the corresponding working mode; accordingly, each sub-current on the second radiation branch 112 also cooperates with the second sub-current I12 of the second radiation part 1112 to support the dependent working mode.

[0048] In summary, the first radiation branch 111 excites the first sub-current I11 and the second sub-current I12, and the second radiation branch 112 excites the second current I2, and the second current I2 includes multiple sub-currents, and the multiple sub-currents cooperate with the first sub-current I11 and the second sub-current I12 to support more working modes, thereby enabling the antenna assembly 10 to support more working frequency bands. It can be seen that the communication performance of the antenna assembly 10 is better. In addition, compared with using more or longer radiators 110 to support more frequency bands, the radiator 110 provided in the embodiment of the present application includes the first radiation branch 111 and the second radiation branch 112 to support more working frequency bands. Therefore, the size of the radiator 110 provided in the embodiment of the present application is smaller. In other words, the radiator 110 of the antenna assembly 10 provided in the embodiment of the present application is smaller in size and has better communication performance.

[0049] Please continue reading Figure 1 The first radiating portion 1111 is perpendicular to the second radiating portion 1112 , and the feeding point P1 is located at the connection between the first radiating portion 1111 and the second radiating portion 1112 .

[0050] The first radiating portion 1111 is perpendicular to the second radiating portion 1112, and the feeding point P1 is located at the connection between the first radiating portion 1111 and the second radiating portion 1112, which is conducive to exciting the first sub-current I11 and the second sub-current I12 flowing perpendicularly. When the first sub-current I11 and the second sub-current I12 flowing perpendicularly are excited, the communication performance of the antenna assembly 10 is better.

[0051] Please read further Figure 1 , the first radiating portion 1111 includes a first end 111a and a second end 111b that are disposed opposite to each other. The first end 111a is disposed closer to the second radiating branch 112 than the second end 111b, and the first end 111a is connected to the second radiating portion 1112, the feeding point P1 is located at the first end 111a, and the second sub-current I12 is also distributed at the first end 111a. In other words, the first end 111a and the second radiating portion 1112 are excited to generate the second sub-current I12.

[0052] The feeding point P1 is located at the first end 111a, which can make the path of the first sub-current I11 excited on the first radiating portion 1111 longer. When the length of the first radiating portion 1111 is constant, the first radiating portion 1111 can support a lower operating frequency band; when the operating frequency band supported by the first radiating portion 1111 is constant, the length of the first radiating portion 1111 can be made smaller, which is conducive to the miniaturization of the size of the first radiating portion 1111. Correspondingly, the feeding point P1 is located at the first end 111a, which can also make the path of the second sub-current I12 excited on the second radiating portion 1112 and the first end 111a longer. When the length of the second radiating portion 1112 is constant, the second radiating portion 1112 can support a lower operating frequency band; when the operating frequency band supported by the second radiating portion 1112 is constant, the length of the second radiating portion 1112 can be made smaller, which is conducive to the miniaturization of the size of the second radiating portion 1112.

[0053] See also Figure 3 and Figure 4 , Figure 3 for Figure 1 A schematic diagram showing the identification of various parts of the antenna assembly; Figure 4 A schematic diagram of an antenna assembly provided in accordance with another embodiment of the present application. Figure 4 The antenna assembly 10 shown is compared to Figure 1 The antenna assembly 10 shown omits some structures. The first radiating portion 1111 includes a first side 111c, a second side 111d and a third side 111e. The second side 111d and the first side 111c are arranged back to back, and the third side 111e is connected to the first side 111c in a bent manner. The second radiating portion 1112 includes a fourth side 112a and a fifth side 112b arranged back to back. The fourth side 112a is colinear with the third side 111e, and the fifth side 112b is connected to the second side 111d in a bent manner. The feeding point P1 is located on the third side 111e and between the extension line of the first side 111c and the extension line of the second side 111d (see Figure 3 Alternatively, the feeding point P1 is located at the first side 111c and between the extension line of the fourth side 112a and the extension line of the fifth side 112b (see Figure 4 ).

[0054] In the antenna assembly 10 provided in this embodiment, the feeding point P1 is located at the first end 111a, and no matter the feeding point P1 is located at the first side 111c and between the extension line of the fourth side 112a and the extension line of the fifth side 112b; or the feeding point P1 is located at the third side 111e and between the extension line of the first side 111c and the extension line of the second side 111d, the path of the first sub-current I11 excited on the first radiation portion 1111 can be longer, and the path of the second sub-current I12 excited on the second radiation portion 1112 can be longer. The feeding point P1 is located at the first end 111a, the feeding point P1 is located at the first side 111c and between the extension line of the fourth side 112a and the extension line of the fifth side 112b, or the feeding point P1 is located at the third side 111e and between the extension line of the first side 111c and the extension line of the second side 111d, so that the path of the first sub-current I11 excited on the first radiating portion 1111 can be longer. When the length of the first radiating portion 1111 is constant, the first radiating portion 1111 can further support a lower operating frequency band; when the operating frequency band supported by the first radiating portion 1111 is constant, the length of the first radiating portion 1111 can be further reduced, which is further conducive to the miniaturization of the size of the first radiating portion 1111. Correspondingly, the path of the second sub-current I12 excited on the second radiation part 1112 can be further made longer, and when the length of the second radiation part 1112 is constant, the second radiation part 1112 can be further enabled to support a lower operating frequency band; when the operating frequency band supported by the second radiation part 1112 is constant, the length of the second radiation part 1112 can be further made smaller, which is further conducive to the miniaturization of the size of the second radiation part 1112.

[0055] Please also read Figure 5 and Figure 6 , Figure 5 A schematic diagram of an antenna assembly provided in yet another embodiment of the present application; Figure 6 for Figure 5Schematic diagram of current flow of the antenna component shown in . In this embodiment, the antenna component 10 includes a radiator 110. The radiator 110 includes a first radiating branch 111 and a second radiating branch 112. The first radiating branch 111 includes a first radiating portion 1111 and a second radiating portion 1112 connected by a bend, and the first radiating portion 1111 has a feeding point P1. The feeding point P1 is used to receive an excitation signal to excite a first current I1 in the first radiating branch 111, wherein the first current I1 includes a first sub-current I11 distributed in the first radiating portion 1111 and a second sub-current I12 distributed in the second radiating portion 1112, and the flow directions of the first sub-current I11 and the second sub-current I12 are perpendicular. The second radiation branch 112 is spaced apart from the first radiation branch 111, and the second radiation branch 112 has a grounding point P2, and the grounding point P2 is used to be electrically connected to the ground electrode, and is stimulated by the excitation signal to generate a second current I2, wherein the second current I2 includes a plurality of sub-currents flowing in different directions, wherein the first current I1 cooperates with the second current I2 to support a plurality of operating frequency bands.

[0056] In addition, the first radiation branch 111 further includes a third radiation portion 1113. The third radiation portion 1113 is connected to the first radiation portion 1111 by bending, and the third radiation portion 1113 and the second radiation portion 1112 are respectively arranged on two opposite sides of the first radiation portion 1111, and the excitation signal is also used to excite the third sub-current I13 in the third radiation portion 1113 in the opposite direction to the second sub-current I12.

[0057] In this embodiment, the first radiation branch 111 also includes a third radiation portion 1113, and the excitation signal also excites a third sub-current I13 on the third radiation portion 1113 that flows in the opposite direction to the second sub-current I12. Therefore, the third radiation portion 1113 can support another operating frequency band. It can be seen that the antenna assembly 10 provided in the embodiment of the present application can support more operating frequency bands and has better communication performance.

[0058] Specifically, in this embodiment, the second sub-current I12 is distributed in the second radiation portion 1112 and the end (i.e., the first end 111a) where the first radiation portion 1111 is connected to the second radiation portion 1112; in other words, the first end 111a and the second radiation portion 1112 are excited to generate the second sub-current I12. The third sub-current I13 is distributed in the third radiation portion 1113 and the end (i.e., the first end 111a) where the first radiation portion 1111 is connected to the second radiation portion 1112; in other words, the first end 111a and the third radiation portion 1113 are excited to generate the third sub-current I13.

[0059] See also Figure 7 , Figure 7 for Figure 5 Schematic diagram of the identification of various parts of the antenna component. The first radiating branch 111 includes a first edge 111c, a second edge 111d and a connecting edge 111f. The first edge 111c and the second edge 111d are arranged opposite to each other, the first edge 111c is connected to the third radiating portion 1113, the second edge 111d is connected to the second radiating portion 1112, the connecting edge 111f is located at the first end 111a, and is connected to the second radiating portion 1112 and the third radiating portion 1113, wherein the feeding point P1 is located at the connecting edge 111f, and is located between the extension line of the first edge 111c and the extension line of the second edge 111d.

[0060] In this embodiment, the feeding point P1 is located at the first end 111a, and the feeding point P1 is located at the connecting edge 111f, and is located between the extension line of the first edge 111c and the extension line of the second edge 111d, so that the path of the first sub-current I11 excited on the first radiation portion 1111 can be longer. When the length of the first radiation portion 1111 is constant, the first radiation portion 1111 can support a lower operating frequency band; when the operating frequency band supported by the first radiation portion 1111 is constant, the length of the first radiation portion 1111 can be smaller.

[0061] In addition, in this embodiment, the feeding point P1 is located at the first end 111a, and the feeding point P1 is located at the connecting edge 111f, and is located between the extension line of the first edge 111c and the extension line of the second edge 111d, which can make the path of the second sub-current I12 excited on the second radiation portion 1112 longer. When the length of the second radiation portion 1112 is constant, the second radiation portion 1112 can support a lower operating frequency band; when the operating frequency band supported by the second radiation portion 1112 is constant, the length of the second radiation portion 1112 can be made smaller.

[0062] In addition, in this embodiment, the feeding point P1 is located at the first end 111a, and the feeding point P1 is located at the connecting edge 111f, and is located between the extension line of the first edge 111c and the extension line of the second edge 111d, which can make the path of the third sub-current I13 excited on the third radiation portion 1113 longer. When the length of the third radiation portion 1113 is constant, the third radiation portion 1113 can support a lower operating frequency band; when the operating frequency band supported by the third radiation portion 1113 is constant, the length of the third radiation portion 1113 can be made smaller.

[0063] In one embodiment, a side of the second radiating portion 1112 away from the second end 111 b of the first radiating portion 1111 and a side of the third radiating portion 1113 away from the second end 111 b of the first radiating portion 1111 are collinear.

[0064] In other words, in the schematic diagram of this embodiment, the bottom sides of the first radiating portion 1111, the second radiating portion 1112, and the third radiating portion 1113 are collinear. In this embodiment, the radiator 110 is relatively easy to manufacture, and the excitation signal received by the feeding point P1 excites a relatively uniform current on the first radiating portion 1111, the second radiating portion 1112, and the third radiating portion 1113, thereby improving the antenna performance of the antenna assembly 10.

[0065] Please continue reading Figure 8 , Figure 8 for Figure 7 The first radiating portion 1111 extends along a first direction D1, and the second radiating portion 1112 and the third radiating portion 1113 both extend along a second direction D2, wherein the size of the second radiating portion 1112 in the second direction D2 is L1, and the size of the third radiating portion 1113 in the second direction D2 is L2, wherein L1>L2.

[0066] In this embodiment, L1>L2, therefore, the size of the second radiating portion 1112 in the second direction D2 is greater than the size of the third radiating portion 1113 in the second direction D2, therefore, the path length of the second sub-current I12 excited by the excitation signal received by the feeding point P1 on the second radiating portion 1112 is greater than the path length of the third sub-current I13 excited by the excitation current on the third radiating portion 1113. Therefore, the operating frequency bands supported by the second radiating portion 1112 and the third radiating portion 1113 are different. L1>L2, therefore, the operating frequency band supported by the second radiating portion 1112 is smaller than the frequency band supported by the third radiating portion 1113. It can be seen that in the antenna assembly 10 provided in the embodiment of the present application, L1>L2, the operating frequency bands supported by the second radiating portion 1112 and the third radiating portion 1113 are different, so that the antenna assembly 10 has better communication performance.

[0067] Please also read Figure 3 and Figure 7 The grounding point P2 is located at the side of the second radiation branch 112 facing the first radiation branch 111 , and the grounding point P2 is located at the side of the extension line of the second side 111d away from the second radiation portion 1112 .

[0068] In the embodiment of the present application, the grounding point P2 is located at the side of the second radiation branch 112 facing the first radiation branch 111, so the grounding point P2 is set close to the first radiation branch 111, and when the grounding point P2 is grounded, the wire connecting the grounding point P2 to the ground electrode and the wire connecting the feeding point P1 to the feed source 151 are easy to assemble together (which will be described in detail later). In addition, the grounding point P2 is located on the side of the extension line of the second side 111d away from the second radiation part 1112, so the grounding point P2 is located at the corner of the second radiation part 1112, so that the path of the sub-current excited on the second radiation part 1112 is longer. When the path of the sub-current excited on the second radiation part 1112 is longer, when the size of the second radiation branch 112 is constant, the second radiation branch 112 can support a lower working frequency band; when the working frequency band supported by the second radiation branch 112 is constant, the size of the second radiation branch 112 can be made smaller, which is conducive to the miniaturization of the size of the second radiation branch 112.

[0069] In this embodiment, the first radiation branch 112 is square as an example for illustration. It can be understood that in other embodiments, the second radiation branch 112 may be rectangular or circular. As long as the excitation signal can excite multiple sub-currents on the second radiation branch 112. In addition, the second radiation branch 112 is square, rectangular, or circular in shape, which is convenient for preparation.

[0070] See also Figure 2 and Figure 6 The multiple sub-currents in the second current I2 include a fourth sub-current I21, a fifth sub-current I22 and a sixth sub-current I23, wherein the flow direction of the fourth sub-current I21 is the same as the flow direction of the first sub-current I11, the flow direction of the fifth sub-current I22 is opposite to the flow direction of the second sub-current I12, and the flow direction of the sixth sub-current I23 is set at an angle to the flow directions of the fourth sub-current I21 and the fifth sub-current I22, respectively.

[0071] The fourth sub-current I21 flows in the same direction as the first sub-current I11. In the schematic diagram of this embodiment, the fourth sub-current I21 flows vertically upward. The fifth sub-current I22 flows in the opposite direction to the second sub-current I12. In the schematic diagram of this embodiment, the second sub-current I12 flows to the left, and the fifth sub-current I22 flows to the right. It can be seen that the fourth sub-current I21 flows in the longitudinal direction, the fifth sub-current I22 flows in the transverse direction, and the sixth sub-current I23 flows in the oblique direction.

[0072] The antenna component 10 provided in the embodiment of the present application has the fourth sub-current I21, the fifth sub-current I22 and the sixth sub-current I23 in the second current I2 having different flow directions, so that the antenna component 10 can support more operating frequency bands and have better communication performance.

[0073] Please read further Figure 2 And see Fig. 9 , Fig. 9 for Figure 1 A cross-sectional schematic diagram of the radio frequency coaxial line provided in along line II; Fig.10 A cross-sectional schematic diagram of a radio frequency coaxial line provided in another embodiment of the present application.

[0074] In one embodiment, the antenna assembly 10 also includes a feed line (an inner core 131 in the schematic diagram of this embodiment), which is electrically connected to the feed point P1, and a portion of the feed line P1 is arranged in a gap between the second radiating branch 112 and the first radiating branch 111, and an extension direction of the feed line is perpendicular to an extension direction of the first radiating portion 1111, and the feed line is coplanar with the second radiating portion 1112.

[0075] Specifically, in the schematic diagram of this embodiment, the first radiating portion 1111 extends along a first direction D1, and the second radiating portion 1112 extends along a second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The extension direction of the feeder is perpendicular to the extension direction of the first radiating portion 1111, and the feeder is coplanar with the second radiating portion 1112, that is, the extension direction of the feeder is the second direction D2.

[0076] In the antenna assembly 10 provided in this embodiment, part of the feed line is disposed in the gap between the second radiation branch 112 and the first radiation branch 111 , which can facilitate electrical connection between the feed line and the feeding point P1 of the first radiation branch 111 .

[0077] In addition, in the antenna assembly 10 provided in the embodiment of the present application, the feeder line is perpendicular to the extension direction of the first radiating portion 1111, which can reduce or even avoid the influence of the feeder line itself on the working frequency band supported by the radiator 110. When the feeder line is perpendicular to the extension direction of the first radiating portion 1111, the feeder line has the least influence on the working frequency band supported by the radiator 110 of the antenna assembly 10. Generally, if the feeder line is not perpendicular to the extension direction of the first radiating portion 1111, the feeder line has a greater influence on the frequency band supported by the first radiating portion 1111. In the antenna assembly 10 provided in the embodiment of the present application, the above-mentioned setting of the feeder line, on the one hand, facilitates the electrical connection between the feeder line and the feeding point P1 of the first radiating branch 111, and on the other hand, can also reduce or even avoid the interference of the feeder line with the working frequency band supported by the antenna assembly 10.

[0078] Furthermore, the antenna assembly also includes a grounding wire (a grounding outer core 133 in the schematic diagram of this embodiment), the grounding wire is electrically connected to the grounding point P2 to the ground electrode, and the grounding wire is partially arranged in the gap between the second radiation branch 112 and the first radiation branch 111, and the extension direction of the grounding wire is perpendicular to the extension direction of the first radiation portion 111, and the grounding wire is coplanar with the second radiation portion 1112.

[0079] In the antenna assembly 10 provided in this embodiment, part of the grounding wire is disposed in the gap between the second radiation branch 112 and the first radiation branch 111 , so that the grounding wire can be electrically connected to the grounding point P2 of the first radiation branch 111 .

[0080] In addition, in the antenna assembly 10 provided in the embodiment of the present application, the grounding wire is perpendicular to the extension direction of the first radiating portion 1111, which can reduce or even avoid the influence of the grounding wire itself on the working frequency band supported by the radiator 110. When the grounding wire is perpendicular to the extension direction of the first radiating portion 1111, the grounding wire has the least influence on the working frequency band supported by the radiator 110 of the antenna assembly 10. When the grounding wire is not perpendicular to the extension direction of the first radiating portion 1111, the electrical connection of the grounding wire to the grounding point P2 is equivalent to extending the length of the second radiating branch 112 in the antenna assembly 10, causing unnecessary radiation (dispersed energy), and the radiation of the grounding wire will interfere with the working frequency band supported by the antenna assembly 10, causing the working frequency band to be abnormal and inefficient, or the radiation constitutes the clutter of the working frequency band supported by the antenna assembly 10. Generally, if the grounding wire is not perpendicular to the extension direction of the first radiating portion 1111, the grounding wire has a greater influence on the frequency band supported by the first radiating portion 1111. The antenna assembly 10 provided in the embodiment of the present application, the above-mentioned setting method of the ground wire, on the one hand, facilitates the electrical connection between the ground wire and the grounding point P2 of the first radiation branch 111, and on the other hand, can also reduce or even avoid the interference of the ground wire on the working frequency band supported by the antenna assembly 10.

[0081] The antenna assembly 10 further includes a radio frequency coaxial line 130 (Cable), and the radio frequency coaxial line 130 includes an inner core 131, an insulating layer (named as a first insulating layer 132) and a grounded outer core 133. The inner core 131 is electrically connected to the feeding point P1. The insulating layer is coated on the outer periphery of the inner core 131. The grounded outer core 133 is arranged on the outer periphery side of the insulating layer away from the inner core 131, and the grounded outer core 133 is electrically connected to the grounding point P2.

[0082] In this embodiment, the inner core 131 is electrically connected to the feed point P1 to transmit the excitation signal to the feed point P1, the insulating layer is coated on the outer periphery of the inner core 131, and the grounded outer core 133 is arranged on the outer periphery of the insulating layer away from the inner core 131, so that the insulating layer insulates and separates the inner core 131 from the grounded outer core 133. The grounded outer core 133 is electrically connected to the ground point P2 to electrically connect the ground point P2 to the ground. In this embodiment, the conductor (also called the feeder line) connecting the feed point P1 is the inner core 131 of the RF coaxial line 130; in other words, the inner core 131 serves as the feeder line to electrically connect to the feed point P1. The conductor (also called the grounding line) connecting the ground point P2 is the grounded outer core 133 of the RF coaxial line 130; in other words, the grounded outer core 133 serves as the grounding line to electrically connect the ground point P2 to the ground. The inner core 131 and the grounded outer core 133 are integrated into the RF coaxial line 130, which can facilitate the integration of the wire (also called the feeder wire) connecting the feeding point P1 and the wire (also called the grounding wire) connecting the grounding point P2. In addition, the grounded outer core 133 is arranged on the outer peripheral side of the insulating layer away from the inner core 131, so the grounded outer core 133 can also constitute the shielding layer of the inner core 131, reducing or even avoiding the excitation signal transmitted by the inner core 131 from interfering with the components around the grounded outer core 133; in addition, the grounded outer core 133 can also reduce or even avoid the interference of the components around the grounded outer core 133 with the excitation signal transmitted by the inner core 131.

[0083] In addition, in one embodiment (see Fig.10 ), an insulating layer may also be provided on the outer peripheral side of the grounded outer core 133. For the convenience of description, the RF coaxial line 130 includes two insulating layers, which are named as the first insulating layer 132 and the second insulating layer 134. In other words, the RF coaxial line 130 includes an inner core 131, a first insulating layer 132, a grounded outer core 133 and a second insulating layer 134. The inner core 131 is electrically connected to the feeding point P1. The first insulating layer 132 is coated on the outer periphery of the inner core 131. The grounded outer core 133 is provided on the outer peripheral side of the first insulating layer 132 away from the inner core 131, and the grounded outer core 133 is electrically connected to the grounding point P2. The second insulating layer 134 is provided on the outer peripheral side of the grounded outer core 133. The second insulating layer 134 is used to protect the grounded outer core 133 and insulate the grounded outer core 133. It is understandable that in other embodiments, the RF coaxial line 130 may not include the second insulating layer 134 , and the antenna assembly 10 provided in the embodiment of the present application does not limit whether the RF coaxial line 130 includes the second insulating layer 134 .

[0084] It can be understood that in the schematic diagram of this embodiment, the feed line and the ground line are integrated into the RF coaxial line 130 as an example. It can be understood that in other embodiments, the feed line and the ground line may not be integrated into the RF coaxial line 130, and the feed line and the ground line may be two separate conductive wires.

[0085] See also Figure 1 and Figure 7 The portion of the RF coaxial line 130 is disposed in the gap between the second radiating branch 112 and the first radiating branch 111, and the extension direction of the inner core 131 in the RF coaxial line 130 is perpendicular to the extension direction of the first radiating portion 1111. The extension direction of the grounded outer core 133 in the RF coaxial line 130 is perpendicular to the extension direction of the first radiating portion 1111.

[0086] In the antenna assembly 10 provided in this embodiment, part of the RF coaxial line 130 is arranged in the gap between the second radiating branch 112 and the first radiating branch 111, which can facilitate the electrical connection between the inner core 131 of the RF coaxial line 130 and the feeding point P1 of the first radiating branch 111, and facilitate the electrical connection between the grounded outer core 133 of the RF coaxial line 130 and the grounding point P2 of the second radiating branch 112.

[0087] In addition, in the antenna assembly 10 provided in the embodiment of the present application, the inner core 131 of the RF coaxial line 130 is perpendicular to the extension direction of the first radiating portion 1111 as a feeder, and the inner core 131 is coplanar with the second radiating portion 1112 as a feeder, which can reduce or even avoid the influence of the RF coaxial line 130 itself on the working frequency band supported by the radiator 110. When the RF coaxial line 130 is perpendicular to the extension direction of the first radiating portion 1111, the influence of the RF coaxial line 130 on the working frequency band supported by the radiator 110 of the antenna assembly 10 is minimal. In addition, the extension direction of the grounded outer core 133 of the RF coaxial line 130 is perpendicular to the extension direction of the first radiating portion 1111, and the grounded outer core 133 is coplanar with the second radiating portion 1112 as a grounding line, which can reduce or even avoid interference with the working frequency band supported by the antenna assembly 10, especially the working frequency band supported by the first radiating portion 1111. Specifically, when the grounded outer core 133 of the RF coaxial line 130 is not perpendicular to the extension direction of the first radiating portion 1111, the grounded outer core 133 of the RF coaxial line 130 is electrically connected to the grounding point P2, which is equivalent to extending the length of the second radiating branch 112 in the antenna assembly 10, causing unnecessary radiation (dispersed energy). The radiation of the grounded outer core 133 of the RF coaxial line 130 may interfere with the working frequency band supported by the antenna assembly 10, especially the working frequency band supported by the first radiating portion 1111, causing the working frequency band to become abnormal and inefficient, or the radiation may constitute noise in the working frequency band supported by the antenna assembly 10. The antenna assembly 10 provided in the embodiment of the present application, the above-mentioned arrangement of the inner core 131 and the grounded outer core 133 of the RF coaxial line 130, on the one hand, facilitates the electrical connection between the inner core 131 of the RF coaxial line 130 and the feeding point P1 of the first radiating branch 111 and facilitates the electrical connection between the grounded outer core 133 of the RF coaxial line 130 and the grounding point P2 of the second radiating branch 112, and on the other hand, it can also reduce or even avoid the interference of the RF coaxial line 130 with the working frequency band supported by the antenna assembly 10.

[0088] For further information, please refer to Fig.11 , Fig.11 A schematic diagram of an antenna assembly provided in another embodiment of the present application. The antenna assembly 10 further includes a circuit board 150. The circuit board 150 includes a feed source 151, and the other end of the RF coaxial line 130 is electrically connected to the feed source 151 of the circuit board 150.

[0089] The feed source 151 is used to generate an excitation signal, and the other end of the RF coaxial line 130 is electrically connected to the circuit board 150 for receiving the excitation signal, and the excitation signal is transmitted to the feeding point P1 via the inner core 131 of the RF coaxial line 130. The other end of the RF coaxial line 130 is electrically connected to the feed source 151 of the circuit board 150 by means of, but not limited to, snaps, pads, etc., which are not limited in the embodiments of the present application.

[0090] In addition, in one embodiment, the circuit board 150 further includes a ground electrode, and the grounded outer core 133 of the RF coaxial line 130 is electrically connected to the ground electrode in the circuit board 150 for grounding.

[0091] In this implementation, the multiple operating frequency bands cover 2.3 GHz to 7 GHz.

[0092] The antenna assembly 10 provided in this embodiment has multiple operating frequency bands covering 2.3 GHz to 7 GHz, so that the antenna assembly 10 can support a wider frequency band. Therefore, it can be seen that the antenna assembly 10 can also be called a broadband antenna.

[0093] It should be noted that, in other embodiments, the operating frequency band supported by the antenna assembly 10 provided in the embodiments of the present application can also be extended to any other required frequency band besides 2.3 GHz to 7 GHz. When the antenna assembly 10 supports other frequency bands, it can be achieved by adjusting the sizes of the first radiation branch 111 and the second radiation branch 112.

[0094] In one embodiment, see Fig.12 , Fig.12 for Figure 7 In this embodiment, the antenna assembly 10 supports 2.4 GHz to 2.5 GHz and 5.0 GHz to 6.0 GHz. The length of the first radiating portion 1111 along the first direction D1 is L1=L 01 +L 02 =24.5mm or about 24.5mm, where L 01 is the size of the portion of the first radiating portion 1111 protruding from the second radiating portion 1112, L 01 =21mm, or about 21mm; L 02 is the size of the portion of the first radiating portion 1111 flush with the second radiating portion 1112, L 02 =3.5mm, or about 3.5mm. L 02It can also be regarded as the width of the second radiation portion 1112. In addition, the dimension L2 of the second radiation portion 1112 along the second direction D2 is 7 mm, or about 7 mm. The second radiation portion 1112 is a square, and the side length L3 is 15 mm, or about 15 mm.

[0095] It can be understood that the antenna assembly 10 provided in the embodiment of the present application, in one embodiment, the working frequency band supported by the antenna assembly 10 mainly includes WiFi 2.4G frequency band (2.4GHz~2.5GHz) and WiFi5G frequency band (5GHz~6GHz). In another embodiment, the working frequency band of the antenna assembly 10 provided in the embodiment of the present application can be extended to 2.3GHz~7GHz, which has a wider range of applicability.

[0096] In addition, since the first radiation branch 111 in the antenna assembly 10 provided in one embodiment of the present application includes the first radiation portion 1111 and the second radiation portion 1112 connected by bending, the shape of the first radiation branch 111 is similar to an L shape. The first radiation branch 111 in the antenna assembly 10 provided in another embodiment of the present application includes the first radiation portion 1111, the second radiation portion 1112 and the third radiation portion 1113, so the shape of the first radiation branch 111 is a double L shape back to back.

[0097] The radiator 110 includes the first radiating branch 111 and the second radiating branch 112. The first radiating branch 111 excites a first sub-current I11 and a second sub-current I12. The second radiating branch 112 excites a second current I2, and the second current I2 includes multiple sub-currents. The multiple sub-currents cooperate with the first sub-current I11 and the second sub-current I12 to support more working modes, thereby enabling the antenna component 10 to support more working frequency bands.

[0098] In addition, when the radiator 110 is a flexible radiator 110, such as an FPC radiator 110 or a flexible PDS radiator 110, the radiator 110 can be conformal to the inner surface of the housing 30 of the wearable device 1 to which the antenna assembly 10 is applied, that is, the antenna assembly 10 is a conformal antenna suitable for the inside of the housing 30 of the wearable device 1. The radiator 110 of the antenna assembly 10 can be optimized according to the size of the housing 30 of the wearable device 1 to achieve the required working frequency band.

[0099] Please also read Fig.13 , Fig.14 and Fig.15 , Fig.13 A three-dimensional schematic diagram of a wearable device provided in one embodiment of the present application; Fig.14 In one embodiment Fig.13 A schematic diagram of a portion of the structure of the wearable device shown in ; Fig.15 for Fig.14 The enlarged schematic diagram at II in the figure. The present application also provides a wearable device 1, which may be, but is not limited to, a virtual reality (Virtual Reality) device or an augmented reality (Augmented Reality, AR) device. For example, the wearable device 1 may be, but is not limited to, glasses, a helmet, a mask, etc. The VR device may also be referred to as a virtual reality head-mounted display device, referred to as a VR head-mounted display device or VR glasses. The VR device is a product that utilizes a combination of multiple technologies such as simulation technology, computer graphics human-computer interface technology, multimedia technology, sensing technology, and network technology. It is a new human-computer interaction product created with the help of computer technology and sensors. Generally speaking, VR head-mounted display devices can be divided into three categories: external head-mounted display devices, integrated head-mounted display devices, and mobile terminal head-mounted display devices. When the wearable device 1 provided in the embodiment of the present application is a VR device, it may be any one of the above three categories. In the embodiment of the present application, the wearable device 1 is an integrated head-mounted display device as an example for explanation. It can be understood that it should not be understood as a limitation on the embodiment of the present application.

[0100] The wearable device 1 includes the antenna assembly 10 provided in any of the above embodiments. The antenna assembly 10 in the wearable device 1 may be, but is not limited to, an external antenna assembly 10, or a built-in antenna assembly 10. In this embodiment, the antenna assembly 10 is described as a built-in antenna assembly 10.

[0101] It should be noted that the radiator 110 of the antenna assembly 10 in the wearable device 1 provided in this embodiment is slightly different in shape from the radiator 110 illustrated in the previous embodiments. It can be understood that this should not constitute a limitation on the embodiments of the present application.

[0102] Please read further Figures 13 to 15 The wearable device 1 includes a shell 30 , and the first radiation branch 111 and the second radiation branch 112 are both arranged on the inner surface of the shell 30 .

[0103] In the wearable device 1 provided in the embodiment of the present application, the first radiation branch 111 and the second radiation branch are both arranged on the inner surface of the shell 30 to facilitate the fixation and layout of the first radiation branch 111 and the second radiation branch 112.

[0104] In addition, when the first radiation branch 111 and the second radiation branch 112 are flexible radiators 110, such as FPC radiators 110 or soft PDS radiators 110, the first radiation branch 111 and the second radiation branch 112 can be conformal to the inner surface of the housing 30 of the wearable device 1, that is, the antenna assembly 10 is a conformal antenna suitable for the inside of the housing 30 of the wearable device 1. The radiator 110 of the antenna assembly 10 can be optimized according to the size of the housing 30 of the wearable device 1 to achieve the required working frequency band.

[0105] Please also read Fig.13 , Fig.16 , Fig.17 , Fig.16 In another embodiment Fig.13 A schematic diagram of a portion of the structure of the wearable device shown in ; Fig.17 for Fig.16 The enlarged schematic diagram at III in the figure. The wearable device 1 includes a large number of functional components 50, so it is difficult to layout the antenna component 10 with the functional components 50. The functional component 50 can be, but is not limited to, a microphone (MIC), a camera, a speaker, an earphone, a Universal Serial Bus (USB) interface, a lens adjustment mechanism, or a function button, etc. The first radiation branch 111 and the second radiation branch 112 of the radiator 110 in the antenna component 10 are arranged on the inner surface of the shell 30. Therefore, there is no need to set a bracket supporting the radiator 110 in the wearable device 1, which is conducive to the layout of the antenna component 10 in the wearable device 1, reducing or even avoiding the radiator 110 and the feeding method of the antenna component 10 being restricted and affected when the functional component 50 is included in the wearable device 1.

[0106] Please also read Fig.13 , Fig.14 and Fig.15 , and see Fig.18 and Fig.19 , Fig.18 for Fig.14 A schematic diagram of another angle of the wearable device shown in ; Fig.19 for Fig.18Schematic diagram of the enlarged structure at IV in FIG. It can be seen that, in this embodiment, the wearable device 1 includes two antenna components 10. The two antenna components 10 are arranged at intervals. It can be understood that in other embodiments, further, in one embodiment, the wearable device 1 includes N antenna components 10 arranged at intervals to form an N*N multiple-input multiple-output (MIMO) antenna, where N≥2, and N is an even number.

[0107] When the wearable device 1 includes N antenna assemblies 10 arranged at intervals to form an N*N MIMO antenna, it can also be regarded that the wearable device 1 includes a MIMO antenna system.

[0108] The wearable device 1 includes N antenna components 10 arranged at intervals to form an N*N MIMO antenna, thereby achieving higher data throughput and streaming, so that the wearable device 1 has better communication performance.

[0109] In the schematic diagram of this embodiment, one antenna component 10 and another antenna component 10 in the MIMO antenna are respectively arranged at two opposite ends of the housing 30. And / or, in other embodiments, one antenna component 10 and another antenna component 10 in the MIMO antenna have different polarization directions.

[0110] One antenna component 10 and another antenna component 10 in the MIMO antenna are respectively arranged at two opposite ends of the housing 30, for example, one antenna component 10 is arranged at the leftmost end of the housing 30, and the other antenna component 10 is arranged at the rightmost end of the housing 30. When one antenna component 10 and another antenna component 10 in the MIMO antenna are respectively arranged at two opposite ends of the housing 30, the distance between the one antenna component 10 and the other antenna component 10 is large, so that the correlation between the one antenna component 10 and the other antenna component 10 can be reduced.

[0111] In summary, when one antenna component 10 and another antenna component 10 in the MIMO antenna are respectively arranged at two ends of the shell 30 that are arranged opposite to each other, the correlation between the one antenna component 10 and the other antenna component 10 is low, thereby reducing or even avoiding the interference of the one antenna component 10 in the MIMO antenna with the other antenna component 10, and also reducing or even avoiding the interference of the other antenna component 10 in the MIMO antenna with the one antenna component 10.

[0112] The polarization direction of one antenna component 10 and another antenna component 10 in the MIMO antenna is different. For example, one antenna component 10 is transversely polarized and the other antenna component 10 is longitudinally polarized; or, one antenna component 10 is longitudinally polarized and the other antenna component 10 is transversely polarized.

[0113] When the polarization directions of one antenna component 10 and another antenna component 10 in the MIMO antenna are different, the correlation between the one antenna component 10 and the other antenna component 10 is low, thereby reducing or even avoiding the interference of the one antenna component 10 in the MIMO antenna with the other antenna component 10, and also reducing or even avoiding the interference of the other antenna component 10 in the MIMO antenna with the one antenna component 10.

[0114] In one embodiment, one antenna component 10 and another antenna component 10 in the MIMO antenna are respectively arranged at two opposite ends of the shell 30; and / or, one antenna component 10 and another antenna component 10 in the MIMO antenna have different polarization directions, so that the isolation between two adjacent antenna components 10 can be better, for example, about -40dB, which is better than -30dB in the related art.

[0115] To summarize, in the wearable device 1 provided in the embodiment of the present application, one antenna component 10 and another antenna component 10 in the MIMO antenna are respectively arranged at two ends of the shell 30 that are arranged opposite to each other; and / or, one antenna component 10 and another antenna component 10 in the MIMO antenna have different polarization directions, which can make the correlation between the one antenna component 10 and the other antenna component 10 lower, thereby reducing or even avoiding the interference of the one antenna component 10 in the MIMO antenna with the other antenna component 10, and also reducing or even avoiding the interference of the other antenna component 10 in the MIMO antenna with the one antenna component 10.

[0116] For further information, see Fig.13 , Fig. 20 and Fig.21 , Fig. 20 for Fig.16 A schematic diagram of the wearable device shown in another angle; Fig.21 for Fig. 20 The wearable device further includes a functional component 50, which includes a conductive member 510, the size of which is greater than or equal to λ / 8, where λ is the wavelength corresponding to the smallest operating frequency among the multiple operating frequency bands supported by the antenna component 10, and the distance between the antenna component 10 and the conductive member 510 is greater than or equal to 4 mm.

[0117] The functional component 50 may be, but is not limited to, a microphone (MIC), a camera, a speaker, an earphone, a Universal Serial Bus (USB) interface, a lens adjustment mechanism, a function key, etc. The conductive member 510 may be, but is not limited to, metal, etc.

[0118] The material of the conductive part 510 can be a metal conductive part. When the size of the conductive part 510 is greater than or equal to λ / 8, the conductive part 510 is considered to be a large-sized conductive part. When the size of the conductive part 510 is greater than or equal to λ / 8, if the distance between the antenna assembly 10 and the conductive part 510 is less than 4 mm, the conductive part 510 will have an adverse effect on the performance of the antenna 10. In the wearable device 1 provided in the embodiment of the present application, the distance between the antenna assembly 10 and the conductive part 510 is greater than or equal to 4 mm, which can reduce or even avoid the adverse effects of the conductive part 510 on the antenna assembly 10, so that the antenna assembly 10 still has good antenna performance.

[0119] It should be noted that, in the schematic diagram of the present embodiment, the outer shell of the functional component 50 is taken as an example as the conductive part 510, and the second radiation branch 112 is taken as the closest to the conductive part 510 for illustration. It can be understood that what is shown in the schematic diagram of the present embodiment should not be understood as a limitation on the implementation method of the present application.

[0120] The antenna performance of the antenna assembly 10 and the wearable device 1 provided in the embodiment of the present application is simulated and described below.

[0121] See also Fig. 22 , Fig. 22 This is a performance chart of the antenna assembly provided in one embodiment of the present application in the WiFi 5G frequency band. Fig. 22 In the embodiment, a wearable device 1 includes two antenna components 10 as an example for description, wherein one antenna component 10 of the two antenna components 10 is marked as antenna 1, and the other antenna component 10 is marked as antenna 2. Fig. 22 In this example, antenna 1 and antenna 2 both support the WiFi 5G frequency band. Fig. 22 The typical channels commonly used by antenna 1 and antenna 2 are described. Among them, TRP represents the average omnidirectional radiated power, and TRP-conducted power = antenna efficiency. It can be seen that antenna 1 has better antenna efficiency when supporting various typical channels of the WiFi 5G frequency band. Fig. 22 It can also be seen that the antenna efficiency of antenna 2 is better when it supports various typical channels of the WiFi 5G frequency band.

[0122] See also Fig.23 , Fig.23 The performance table of the antenna assembly provided in one embodiment of the present application in the WiFi 2.4G frequency band. Fig.23 In the embodiment, a wearable device 1 includes an antenna component 10 as an example for description, wherein the antenna component 10 is marked as antenna 1. Fig.23 In the example, antenna 1 supports the WiFi 2.4G frequency band. Fig.23 The typical channels commonly used by antenna 1 are described. TRP represents the average omnidirectional radiated power, and TRP-conducted power = antenna efficiency. It can be seen that antenna 1 has a good antenna efficiency when supporting various typical channels of the WiFi 2.4G frequency band.

[0123] See also Fig.24 , Fig.24 This is a performance table of the MIMO antenna provided in one embodiment of the present application. In this performance table, two antenna components 10 are used as an example to form a MIMO antenna for test recording. Fig.24 It can be seen that the antenna efficiency of the MIMO antenna is better in each typical channel of the WiFi 5G frequency band. In addition, the antenna efficiency of the MIMO antenna in each typical channel of the WiFi 5G frequency band is improved by about 2dB to 3dB compared with the effect of a single antenna composed of a single antenna assembly 10 supporting the WiFi 5G frequency band.

[0124] The above is part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly includes a radiator, and the radiator includes: a first radiation branch, wherein the first radiation branch comprises a first radiation portion and a second radiation portion connected in a bent manner, the first radiation portion having a feeding point, the feeding point being used to receive an excitation signal to excite a first current in the first radiation branch, wherein the first current comprises a first sub-current distributed in the first radiation portion and a second sub-current distributed in the second radiation portion, and the flow directions of the first sub-current and the second sub-current are perpendicular; and A second radiation branch, the second radiation branch is spaced apart from the first radiation branch, the second radiation branch has a grounding point, the grounding point is used to be electrically connected to the ground electrode, the second radiation branch is excited by the excitation signal to generate a second current, wherein the second current includes a plurality of sub-currents flowing in different directions, wherein the first current cooperates with the second current to support a plurality of operating frequency bands.

2. The antenna assembly according to claim 1, wherein: The first radiating portion is perpendicular to the second radiating portion, and the feeding point is located on the first radiating portion and is disposed adjacent to a connection between the first radiating portion and the second radiating portion.

3. The antenna assembly according to claim 2, wherein: The antenna assembly also includes a feed line, which is electrically connected to the feed point. The feed line is partially arranged in the gap between the second radiating branch and the first radiating branch, and the extension direction of the feed line is perpendicular to the extension direction of the first radiating portion, and the feed line is coplanar with the second radiating portion.

4. The antenna assembly according to claim 3, characterized in that The antenna assembly also includes a grounding wire, which is electrically connected from the grounding point to the ground electrode, and the grounding wire is partially arranged in the gap between the second radiation branch and the first radiation branch, and the extension direction of the grounding wire is perpendicular to the extension direction of the first radiation part, and the grounding wire is coplanar with the second radiation part.

5. The antenna assembly according to claim 4, characterized in that The antenna assembly further includes a radio frequency coaxial line, and the radio frequency coaxial line includes: an inner core, the inner core serving as the feeder line to be electrically connected to the feed point; an insulating layer, the insulating layer covering the outer periphery of the inner core; and A grounding outer core is disposed on the outer peripheral side of the insulating layer away from the inner core, and the grounding outer core serves as the grounding wire to electrically connect the grounding point to the ground electrode.

6. The antenna assembly according to claim 5, characterized in that The antenna assembly further includes a circuit board, the circuit board includes a feed source, and the other end of the radio frequency coaxial line is electrically connected to the feed source of the circuit board.

7. The antenna assembly according to claim 2, characterized in that: The first radiating portion includes a first end and a second end disposed opposite to each other, the first end is disposed closer to the second radiating branch than the second end, and the first end is connected to the second radiating portion, the feeding point is located at the first end, and the second sub-current is also distributed at the first end.

8. The antenna assembly according to claim 7, wherein: The first radiating portion includes a first side, a second side and a third side, the second side and the first side are arranged opposite to each other, and the third side is connected to the first side by a bend; The second radiating portion includes a fourth side and a fifth side that are disposed opposite to each other, the fourth side is collinear with the third side, and the fifth side is connected to the second side by a bend; The feeding point is located on the first side and between an extension line of the fourth side and an extension line of the fifth side; or the feeding point is located on the third side and between an extension line of the first side and an extension line of the second side.

9. The antenna assembly according to claim 7, wherein: The first radiation branch also includes: The third radiation part is connected to the first radiation part by bending, and the third radiation part and the second radiation part are respectively arranged on two opposite sides of the first radiation part, and the excitation signal is also used to excite a third sub-current in the third radiation part with a flow direction opposite to that of the second sub-current.

10. The antenna assembly according to claim 9, wherein: The first radiator includes a first edge, a second edge and a connecting edge, the first edge and the second edge are arranged opposite to each other, the first edge is connected to the third radiating part, the second edge is connected to the second radiating part, the connecting edge is located at the first end, and is connected to the second radiating part and the third radiating part, wherein the feeding point is located at the connecting edge and between the extension line of the first edge and the extension line of the second edge.

11. The antenna assembly according to claim 9, wherein: A side of the second radiating portion facing away from the second end of the first radiating portion and a side of the third radiating portion facing away from the second end of the first radiating portion are collinear.

12. The antenna assembly according to claim 9, wherein: The first radiating portion extends along a first direction, and the second radiating portion and the third radiating portion both extend along a second direction, wherein a size of the second radiating portion in the second direction is L1, and a size of the third radiating portion in the second direction is L2, wherein L1>L2.

13. The antenna assembly according to claim 8 or 10, characterized in that: The grounding point is located at a side of the second radiation branch facing the first radiation branch, and the grounding point is located at a side of an extension line of the second side away from the second radiation portion.

14. The antenna assembly according to claim 1, wherein: The second radiator branches are square, rectangular or circular.

15. The antenna assembly according to any one of claims 1 to 12, characterized in that: The multiple sub-currents in the second current include a fourth sub-current, a fifth sub-current and a sixth sub-current, wherein the flow direction of the fourth sub-current is the same as the flow direction of the first sub-current, the flow direction of the fifth sub-current is opposite to the flow direction of the second sub-current, and the flow direction of the sixth sub-current is set at an angle to the flow directions of the fourth sub-current and the fifth sub-current, respectively.

16. A wearable device, comprising the antenna assembly according to any one of claims 1 to 15.

17. The wearable device according to claim 16, wherein: The wearable device comprises a shell, and the first radiation branch and the second radiation branch are both arranged on the inner surface of the shell.

18. The wearable device according to claim 16, wherein: The wearable device includes N antenna components arranged at intervals to form an N*N MIMO antenna, wherein N≥2 and N is an even number.

19. The wearable device according to claim 18, wherein: The wearable device comprises a shell, and one antenna component and another antenna component in the MIMO antenna are respectively arranged at two opposite ends of the shell; and / or one antenna component and another antenna component in the MIMO antenna have different polarization directions.

20. The wearable device according to claim 16, wherein: The wearable device also includes a functional component, which includes a conductive part. The size of the conductive part is greater than or equal to λ / 8, where λ is the wavelength corresponding to the smallest operating frequency in the multiple operating frequency bands, and the distance between the antenna component and the conductive part is greater than or equal to 4 mm.

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