CN116666945A

CN116666945A - Antenna device, circuit board assembly and electronic equipment

Info

Publication number: CN116666945A
Application number: CN202210151962.1A
Authority: CN
Inventors: 文思超
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2023-08-29

Abstract

The application provides an antenna device, a circuit board assembly and electronic equipment. The antenna device comprises a radiator, wherein the radiator comprises a first radiation part, a second radiation part, a first feed point and a second feed point, the first radiation part and the second radiation part are oppositely arranged and are electrically connected, the first feed point is positioned at the first radiation part or the second radiation part, the first feed point is used for receiving excitation so that the first radiation part forms a first distributed current, the second radiation part forms a second distributed current, and the flow direction of the first distributed current is opposite to the flow direction of the second distributed current; the second feeding point is positioned at the first radiation part or the second radiation part and is used for receiving excitation to enable the first radiation part to form third distributed current and the second radiation part to form fourth distributed current, and the flow direction of the third distributed current is the same as that of the fourth distributed current. The antenna device, the circuit board assembly and the electronic equipment provided by the application can realize the common radiator, so that the number of the radiators is reduced, and the miniaturization of the radiators is facilitated.

Description

Antenna device, circuit board assembly and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to an antenna device, a circuit board assembly, and an electronic device.

Background

With further development of communication technology, more antennas are required to be provided inside the electronic device to satisfy the corresponding communication functions. The increase in the number of antennas corresponds to the increase in the number of radiators, and the plurality of radiators need to occupy a larger stacking space, which is unfavorable for miniaturization of electronic equipment, and therefore, how to reduce the number of radiators to save the stacking space becomes a technical problem to be solved.

Disclosure of Invention

The application provides an antenna device with a common radiator, a circuit board assembly and electronic equipment.

In one aspect, the present application provides an antenna apparatus comprising:

the radiator comprises a first radiation part, a second radiation part, a first feed point and a second feed point, wherein the first radiation part and the second radiation part are oppositely arranged and are electrically connected; the first feeding point is positioned at the first radiation part or the second radiation part and is used for receiving excitation so as to enable the radiator to generate a first resonance mode; the first resonant mode forms a first distributed current at the first radiation part and a second distributed current at the second radiation part, and the flow direction of the first distributed current is opposite to the flow direction of the second distributed current; the second feeding point is positioned at the first radiating part or the second radiating part and is used for receiving excitation so as to enable the radiator to generate a second resonance mode; the second resonant mode forms a third distributed current in the first radiating portion and a fourth distributed current in the second radiating portion, and the flow direction of the third distributed current is the same as the flow direction of the fourth distributed current.

On the other hand, the application also provides a circuit board assembly, which comprises a circuit board and the antenna device, wherein the antenna device is arranged on the circuit board, the circuit board comprises a reference ground, and the reference ground forms a grounding layer of the antenna device.

In still another aspect, the present application further provides an electronic device, including a housing assembly and the circuit board assembly, where the circuit board assembly is disposed in the housing assembly.

The antenna device, the circuit board assembly and the electronic equipment provided by the application comprise the radiator, because the first radiating part and the second radiating part of the radiator are oppositely arranged and electrically connected, the position of the first feeding point and the position of the second feeding point of the radiator are different, the first feeding point can receive excitation to enable the radiator to generate a first resonance mode, and the second feeding point can receive excitation to enable the radiator to generate a second resonance mode, so that the radiator can receive excitation through the first feeding point and the second feeding point at the same time, the radiator has two resonance modes, the current flow direction on the first radiating part and the current flow direction on the second radiating part in the first resonance mode are opposite, the current flow direction on the first radiating part and the current flow direction on the second radiating part in the second resonance mode are the same, and the current distribution in the two resonance modes is different, thereby being beneficial to realizing that the radiator receives and transmits electromagnetic wave signals carrying different information at the same time, namely realizing that two antennas share the same radiator, further reducing the number of the radiator, saving the stacking space and facilitating miniaturization of the antenna device, the circuit board assembly and the electronic equipment.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 2 is an exploded schematic view of the electronic device of FIG. 1, wherein the electronic device includes a housing assembly and a circuit board assembly;

FIG. 3 is a schematic structural view of a circuit board assembly in the electronic device shown in FIG. 2, wherein the circuit board assembly includes a circuit board and an antenna device;

fig. 4 is a schematic plan view of an antenna device in the circuit board assembly shown in fig. 3, wherein the antenna device includes a radiator and first and second feed assemblies;

fig. 5 is a schematic view of the antenna device shown in fig. 4, in which the first feeding assembly and the second feeding assembly are electrically connected to the radiator;

fig. 6 is another schematic diagram of the antenna device shown in fig. 4, in which the first feeding assembly and the second feeding assembly are electrically connected to a radiator;

fig. 7 is a schematic view of the antenna device shown in fig. 4, in which the first feeding assembly and the second feeding assembly are electrically connected to a radiator;

fig. 8 is a schematic view of the antenna device shown in fig. 4, in which the first feeding assembly and the second feeding assembly are electrically connected to a radiator;

Fig. 9 is a schematic diagram of a radiator of the antenna device shown in fig. 5 having a first distributed current and a second distributed current;

fig. 10 is a schematic diagram of a radiator of the antenna device shown in fig. 5 having a third distributed current and a fourth distributed current;

fig. 11 is a schematic view of a radiator of the antenna device of fig. 9 having a first electric field;

fig. 12 is a schematic view of a radiator of the antenna apparatus shown in fig. 10 having a second electric field;

fig. 13 is a schematic view of a radiator of the antenna device shown in fig. 4 including a first radiating portion and a second radiating portion;

fig. 14 is a schematic view of the radiator of the antenna device shown in fig. 13 further including a third radiating portion;

fig. 15 is another angular schematic view of a radiator in the antenna device of fig. 14;

fig. 16 is a schematic view of the radiator of the antenna device shown in fig. 15 further including a fourth radiating portion;

fig. 17 is another angular schematic view of a radiator in the antenna device of fig. 16;

fig. 18 is a schematic view of the radiator of the antenna device shown in fig. 16 further including a fifth radiating portion;

fig. 19 is another angular schematic view of the radiator in the antenna device of fig. 18;

fig. 20 is a schematic cross-sectional view of the antenna device of fig. 14 further including a dielectric substrate;

fig. 21 is a schematic diagram of a current flow of the antenna device of fig. 20 in a first resonant mode;

Fig. 22 is a schematic diagram of a current flow of the antenna device of fig. 20 in a second resonant mode;

fig. 23 is a schematic plan view of the antenna device of fig. 20 with a first feed element disposed near the center and a second feed element disposed near the edge;

fig. 24 is a schematic cross-sectional view of the antenna device of fig. 23 taken along line A-A;

fig. 25 is a schematic plan view of the antenna device shown in fig. 23, further including a ground layer and a ground member;

fig. 26 is a schematic cross-sectional view of the antenna device of fig. 25 taken along line B-B;

fig. 27 is a schematic view of the circuit board assembly of fig. 3 with reference to ground as a ground plane for the antenna assembly;

fig. 28 is a schematic diagram of a return loss curve and an isolation curve of an antenna device according to the present application;

fig. 29 is a schematic view of radiation efficiency of an antenna device provided by the present application;

fig. 30 is a schematic diagram of electric field distribution of the antenna device in the first resonant mode according to the present application;

fig. 31 is a schematic diagram of electric field distribution of the antenna device in the second resonant mode according to the present application;

fig. 32 is a schematic diagram of a current distribution of a first radiation portion of the antenna device provided by the present application in a first resonant mode;

fig. 33 is a schematic diagram of current distribution of the first radiating portion of the antenna device provided by the present application in the second resonant mode.

Detailed Description

The technical scheme of the present application will be clearly and completely described below with reference to the accompanying drawings. It should be apparent that the described embodiments of the application are only some embodiments, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present application are within the scope of protection of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will appreciate explicitly and implicitly that the described embodiments of the application may be combined with other embodiments.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example: an assembly or device incorporating one or more components is not limited to the listed one or more components, but may alternatively include one or more components not listed but inherent to the illustrated product, or one or more components that may be provided based on the illustrated functionality.

As shown in fig. 1, fig. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application. The electronic device 100 may be a mobile phone, a tablet computer, a watch, a bracelet, glasses, a speaker, a refrigerator, a router, a client front-end device, an unmanned aerial vehicle, a robot, or the like having a communication function. In the embodiment of the application, a mobile phone is taken as an example. The following embodiment is described for convenience in establishing a coordinate system as shown in fig. 1, wherein an X-axis direction may be understood as a length direction of the electronic device 100, a Y-axis direction may be understood as a width direction of the electronic device 100, a Z-axis direction may be understood as a thickness direction of the electronic device 100, and a direction indicated by an arrow is a forward direction. It should be noted that the electronic device 100 provided by the present application includes, but is not limited to, a cuboid or a near cuboid electronic device.

Referring to fig. 1 and 2, an electronic device 100 includes a housing assembly 2 and a circuit board assembly 1 disposed in the housing assembly 2. In the embodiment of the present application, the housing assembly 2 includes a display screen 21, a middle frame 22, and a rear cover 23. The display screen 21 is disposed opposite to the rear cover 23, and the middle frame 22 is connected between the display screen 21 and the rear cover 23. An accommodating space 24 is formed among the display screen 21, the middle frame 22 and the rear cover 23. The circuit board assembly 1 is accommodated in the accommodating space 24. In one embodiment, when the circuit board assembly 1 is mounted in the electronic device 100, the length direction of the circuit board assembly 1 is the length direction of the electronic device 100, the width direction of the circuit board assembly 1 is the width direction of the electronic device 100, and the thickness direction of the circuit board assembly 1 is the thickness direction of the electronic device 100. The following embodiments are described based on the structure of the circuit board assembly 1 and the installation manner of the circuit board assembly 1 in the electronic device 100. It is apparent that the structure of the circuit board assembly 1 provided by the present application and the installation manner of the circuit board assembly 1 in the electronic device 100 include, but are not limited to, the structure and the manner described in the above embodiments.

Referring to fig. 2 and 3, the circuit board assembly 1 includes a circuit board 20 and an antenna device 10 disposed on the circuit board 20. When the circuit board assembly 1 is disposed in the electronic device 100, the antenna device 10 may face the display screen 21, or the middle frame 22, or the rear cover 23. The embodiment of the present application takes the antenna device 10 facing the display screen 21 as an example. In one embodiment, the length direction of the circuit board 20 and the length direction of the antenna device 10 are consistent with the length direction of the circuit board assembly 1; the width direction of the circuit board 20, the width direction of the antenna device 10, and the width direction of the circuit board assembly 1 coincide; the thickness direction of the circuit board 20 and the thickness direction of the antenna device 10 coincide with the thickness direction of the circuit board assembly 1. In other words, the length direction of the circuit board 20 and the length direction of the antenna device 10 are both the X-axis direction; the width direction of the circuit board 20 and the width direction of the antenna device 10 are both the Y-axis direction; the thickness direction of the circuit board 20 and the thickness direction of the antenna device 10 are both Z-axis directions. The scheme described in the following embodiments is based on the structure of the circuit board 20, the structure of the antenna device 10, and the arrangement of the antenna device 10 on the circuit board 20 described above. It is apparent that the structure of the circuit board 20, the structure of the antenna device 10 and the arrangement of the antenna device 10 on the circuit board 20 provided by the present application include, but are not limited to, the structures and arrangements described in the above embodiments.

The circuit board 20 may be a main circuit board of the electronic device 100, or may be other sub-circuit boards of the electronic device 100. The circuit board 20 may be a single-sided circuit board, a double-sided circuit board, a multi-layer circuit board, or the like when divided by the number of layers of the circuit board 20, and the circuit board 20 may be a hard circuit board, a flexible-rigid board, or the like when divided by the characteristics of the circuit board 20. In the embodiment of the application, a printed circuit board (Printed circuit boards, PCB) is taken as an example. Of course, in other embodiments, the circuit board 20 may also be a flexible circuit board (Flexible Printed Circuit, FPC). The shape of the circuit board 20 may be one of a circle, a triangle, a rectangle, a square, and other polygons. In the embodiment of the present application, the rectangular circuit board 20 is taken as an example based on the above-established coordinate system. The circuit board 20 includes a reference ground 201. Of course, the circuit board 20 may also include one or more of pads, conductive vias, non-conductive vias, mounting holes, wires, components, connectors, electrical boundaries, and the like. The reference ground 201 may be a conductive component with zero reference potential, a conductive component connected to the housing, or a conductive component connected to zero reference potential, which may be a specific component on the surface layer of the circuit board 20, a specific component on the inner layer of the circuit board 20, or a whole layer component of the circuit board 20. In the embodiment of the present application, the reference ground 201 is exemplified by a whole layer of metal located on the surface layer. The material of the reference ground 201 may be copper, aluminum, or the like. Of course, in other embodiments, the reference ground 201 may also be a grid or other patterned metal, or the like.

Referring to fig. 4 and 5, the antenna device 10 includes a radiator 101, a first feeding component 102 and a second feeding component 103. The radiator 101 may be made of metal, alloy, conductive composite material, or the like. For example: the material of the radiator 101 may include one or more of silver, copper, aluminum, etc. The radiator 101 includes a first radiating portion 110, a second radiating portion 112, a first feeding point 113, and a second feeding point 114. The first radiating portion 110 is disposed opposite to and electrically connected to the second radiating portion 112. In the embodiment of the present application, the direction in which the first radiation portion 110 and the second radiation portion 112 are opposite is taken as an example in the thickness direction of the antenna device 10, i.e., the Z-axis direction in the drawing. It will be appreciated that the first radiating portion 110 is spaced from the second radiating portion 112 in the Z-axis direction. "electrically connected" may be used to indicate that the connection is direct, indirect, or electrically coupled, and will not be described in detail. The first feeding point 113 is a first position point on the radiator 101. The second feeding point 114 is a second position point on the radiator 101. The first feeding point 113 is located at the first radiating portion 110 or the second radiating portion 112. The second feeding point 114 is located at the first radiating portion 110 or the second radiating portion 112. The first feeding point 113 is located at a different position on the radiator 101 than the second feeding point 114 is located at the radiator 101. Alternatively, referring to fig. 5 to 8, the first feeding point 113 and the second feeding point 114 may be located at the first radiating portion 110 and the second radiating portion 112, respectively; alternatively, the first feeding point 113 and the second feeding point 114 are both located at the first radiating portion 110, but are located at different positions; alternatively, the first feeding point 113 and the second feeding point 114 are both located at the second radiating portion 112, but are located at different positions. The first feeding point 113 is for receiving excitation to cause the radiator 101 to generate a first resonance mode; the first resonant mode forms a first distributed current in the first radiating portion 110 and a second distributed current in the second radiating portion 112, and the flow direction of the first distributed current is opposite to the flow direction of the second distributed current. The second feeding point 114 is for receiving an excitation to cause the radiator 101 to generate a second resonance mode; the second resonant mode forms a third distributed current in the first radiating portion 110 and a fourth distributed current in the second radiating portion 112, and the third distributed current has the same flow direction as the fourth distributed current. Specifically, the first feeding assembly 102 is electrically connected to the first feeding point 113. The first feeding component 102 and the first feeding point 113 may be electrically connected directly; or indirectly electrically connected; or coupled. The first feed assembly 102 is for generating an excitation signal to excite the radiator 101 at a first feed point 113 to generate a first resonant mode. In other words, the radiator 101 may form a first electromagnetic field (including a first electric field and a first magnetic field) to transmit and receive a first electromagnetic wave signal under the excitation of the first feeding member 102. The first electromagnetic wave signal may be one of a 2G mobile communication signal, a 3G mobile communication signal, a 4G mobile communication signal, a 5G mobile communication signal, a WiFi communication signal, a GPS communication signal, and the like. The second feeding assembly 103 is electrically connected to the second feeding point 114. The second feeding component 103 may be electrically connected to the second feeding point 114 directly; or indirectly electrically connected; or coupled. The second feed assembly 103 is arranged to generate an excitation signal to excite the radiator 101 from the second feed point 114 to generate a second resonance mode. In other words, the radiator 101 may form a second electromagnetic field (including a second electric field and a second magnetic field) to transmit and receive a second electromagnetic wave signal under the excitation of the second feeding member 103. The second electromagnetic wave signal may be one of a 2G mobile communication signal, a 3G mobile communication signal, a 4G mobile communication signal, a 5G mobile communication signal, a WiFi communication signal, a GPS communication signal, and the like.

In an application scenario, by making the resonant frequency corresponding to the first resonant mode and the resonant frequency corresponding to the second resonant mode different, it is possible to implement that the frequency band of the first electromagnetic wave signal transmitted and received by the radiator 101 under the action of the first feeding component 102 is different from the frequency band of the second electromagnetic wave signal transmitted and received by the radiator 101 under the action of the second feeding component 103. At this time, the antenna device 10 can realize that two antennas of different frequency bands share the same radiator 101. In another application scenario, the first resonant mode is different from the second resonant mode, so that the type of the first electromagnetic wave signal sent and received by the radiator 101 under the action of the first feeding component 102 is different from the type of the second electromagnetic wave signal sent and received by the radiator 101 under the action of the second feeding component 103. For example: the first electromagnetic wave signal is a honeycomb signal, and the second electromagnetic wave signal is one of a WiFi signal and a GPS signal; or one of the first electromagnetic wave signal WiFi signal and the GPS signal, and the second electromagnetic wave signal is a cellular signal.

Referring to fig. 9 and 10, the first resonant mode forms a first distributed current I1 at the first radiating portion 110 and a second distributed current I2 at the second radiating portion 112. The second resonance mode forms a third distributed current I3 at the first radiating portion 110 and a fourth distributed current I4 at the second radiating portion 112. It should be noted that, the first distributed current I1 in the present application may be understood as a main current generated by the first feeding assembly 102 exciting the radiator 101 at the first radiating portion 110. The second distributed current I2 can be understood as the main current that the first feeding assembly 102 excites the radiator 101 to be generated at the second radiating portion 112. The third distributed current I3 may be understood as the main current generated by the second feeding assembly 103 exciting the radiator 101 at the first radiating portion 110. The fourth distributed current I4 can be understood as the main current generated by the second feeding assembly 103 exciting the radiator 101 at the second radiating portion 112. It is understood that the first radiation portion 110 and the second radiation portion 112 may have other current flowing to be dispersed. In the present application, the first feeding component 102 and the second feeding component 103 can excite the radiator 101 at the same time, at this time, the first radiating portion 110 has a first distributed current I1 and a third distributed current I3, the second radiating portion 112 has a second distributed current I2 and a fourth distributed current I4, and the radiator 101 can transmit and receive the first electromagnetic wave signal and the second electromagnetic wave signal at the same time. The flow direction of the first distributed current I1 is opposite to the flow direction of the second distributed current I2. The third distributed current I3 flows in the same direction as the fourth distributed current I4. It will be appreciated that the distribution of the current excited by the first feeding member 102 on the radiator 101 is different from the distribution of the current excited by the second feeding member 103 on the radiator 101, i.e. the first electromagnetic field generated by the radiator 101 under excitation of the first feeding member 102 is different from the second electromagnetic field generated under excitation of the second feeding member 103. The third distributed current I3 may be the same as or different from the first distributed current I1 and the second distributed current I2. The fourth distributed current I4 may be the same as or different from the first distributed current I1 and the second distributed current I2. In the embodiment of the present application, the third distributed current I3 is different from the first distributed current I1 and the second distributed current I2, and the fourth distributed current I4 is different from the first distributed current I1 and the second distributed current I2.

Referring to fig. 11 and 12, the first radiating portion 110 and the second radiating portion 112 of the radiator 101 are disposed opposite to each other and electrically connected, and the first distribution current I1 of the first radiating portion 110 and the second distribution current I2 of the second radiating portion 112 flow in opposite directions in the first resonant mode, so that the first electric field formed by the radiator 101 under the excitation received from the first feeding point 113 is mainly concentrated between the first radiating portion 110 and the second radiating portion 112. The third distribution current I3 of the first radiating portion 110 flows in the same direction as the fourth distribution current I4 of the second radiating portion 112 in the second resonant mode, and the second electric field formed by the excitation received by the radiator 101 from the second feeding point 114 is dispersed on the side of the first radiating portion 110 facing away from the second radiating portion 112 and on the side of the second radiating portion 112 facing away from the first radiating portion 110.

The antenna device 10, the circuit board assembly 1 and the electronic device 100 provided by the application comprise the radiator 101, and because the first radiation part 110 and the second radiation part 112 of the radiator 101 are oppositely arranged and electrically connected, the position of the first feeding point 113 and the position of the second feeding point 114 of the radiator 101 are different, the first feeding point 113 can receive excitation to enable the radiator 101 to generate a first resonance mode, and the second feeding point 114 can receive excitation to enable the radiator 101 to generate a second resonance mode, so that the radiator 101 can simultaneously receive excitation through the first feeding point 113 and the second feeding point 114, the radiator 101 has two resonance modes, the current flow direction of the first radiation part 110 in the first resonance mode is opposite to the current flow direction of the second radiation part 112 in the second resonance mode, the current flow direction of the first radiation part 110 in the second resonance mode is identical to the current flow direction of the second radiation part 112, and the current distribution in the two resonance modes is different, thereby being beneficial to realizing that the radiator 101 simultaneously receives and transmits and receives electromagnetic wave signals carrying different information, namely realizing that two antennas share the same radiator 101, further reducing the number of the radiator 101, and saving space, and the antenna device 10 and the electronic device 100 are convenient for realizing the stack of the antenna assembly 100.

As shown in fig. 13, the first radiation portion 110 may be a radiation column, a radiation bar, a radiation sheet, or the like. The second radiating portion 112 may radiate a column, a radiating strip, a radiating patch, or the like. The material of the first radiation portion 110 may be a metal, an alloy, a composite conductive material, or the like. The material of the second radiation portion 112 may be a metal, an alloy, a composite conductive material, or the like. In one embodiment, the first radiation portion 110 is a radiation patch, and the second radiation portion 112 is a radiation patch. In other words, the first and second radiation portions 110 and 112 have a relatively thin thickness. The materials of the first radiation portion 110 and the second radiation portion 112 are metal, for example: copper, silver, iron, etc. The shape of the first radiation portion 110 may be L-shaped, V-shaped, triangular, rectangular, square, other polygonal shapes, etc. The shape of the second radiation portion 112 may be L-shaped, V-shaped, triangular, rectangular, square, other polygonal shapes, etc. In the following embodiments, the shape of the first radiation portion 110 and the shape of the second radiation portion 112 are taken as examples. The rectangular radiating piece has a larger area, so that the second electromagnetic field can be increased, and the second electromagnetic field covers from one side of the first radiating part 110, which is away from the second radiating part 112, to one side of the second radiating part 112, which is away from the first radiating part 110, so that the coverage area is larger, and the omnidirectionality of the radiator 101 in the second resonance mode can be better. In this embodiment, the second resonant mode generated by the radiator 101 under the excitation of the second feeding element 103 can be understood as a patch resonant mode, and is suitable for receiving and transmitting the second electromagnetic wave signal of the intermediate frequency, the intermediate frequency and the high frequency and the close range. It will be appreciated that the first radiating portion 110 includes a first edge 110a, a second edge 110b, a third edge 110c, and a fourth edge 110d, which are connected end to end in sequence. The first edge 110a and the third edge 110c are disposed opposite to each other in the width direction of the first radiation portion 110. The second edge 110b and the fourth edge 110d are disposed opposite to each other along the longitudinal direction of the first radiation portion 110. The second radiating portion 112 includes a fifth edge 112a, a sixth edge 112b, a seventh edge 112c, and an eighth edge 112d, which are connected end to end in order. The fifth edge 112a and the seventh edge 112c are disposed opposite to each other in the width direction of the second radiation portion 112. The sixth edge 112b is disposed opposite to the eighth edge 112d along the length direction of the second radiation portion 112. The length direction of the first radiation portion 110 and the length direction of the second radiation portion 112 are the same, that is, the length direction of the radiator 101, which can refer to the X-axis direction in the drawings; the width direction of the first radiation portion 110 and the width direction of the second radiation portion 112 are the same, that is, the width direction of the radiator 101, which can be referred to the Y-axis direction in the drawing. In the embodiment of the present application, the length direction of the radiator 101 is defined as the length direction of the antenna device 10, and the width direction of the radiator 101 is defined as the width direction of the antenna device 10.

Alternatively, referring to fig. 14 and 15, a first end 1101 of the first radiating portion 110 is disposed opposite to a second end 1102 of the first radiating portion 110. The first end 1120 of the second radiating portion 112 is disposed opposite the second end 1121 of the second radiating portion 112. In the embodiment of the present application, the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110 are disposed opposite to each other in the width direction of the radiator 101 (i.e., in the Y-axis direction in the drawing), and the first end 1120 of the second radiating portion 112 and the second end 1121 of the second radiating portion 112 are disposed opposite to each other in the width direction of the radiator 101. Of course, in other embodiments, the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110 may be disposed opposite to each other along the length direction of the radiator 101 (i.e., along the X-axis direction in the drawing), and the first end 1120 of the second radiating portion 112 and the second end 1121 of the second radiating portion 112 may be disposed opposite to each other along the length direction of the radiator 101. The first end 1101 of the first radiating portion 110 may be understood as a first edge 110a of the first radiating portion 110 or a partial radiating area near the first edge 110a of the first radiating portion 110, and the second end 1102 of the first radiating portion 110 may be understood as a third edge 110c of the first radiating portion 110 or a partial radiating area near the third edge 110c of the first radiating portion 110. The first end 1101 of the first radiating portion 110 is electrically connected to the first end 1120 of the second radiating portion 112. The first end 1101 of the first radiating portion 110 and the first end 1120 of the second radiating portion 112 may be electrically connected directly or indirectly. Alternatively, when the first end 1101 of the first radiating portion 110 is indirectly electrically connected to the first end 1120 of the second radiating portion 112, the first end 1101 of the first radiating portion 110 and the first end 1120 of the second radiating portion 112 may be connected by a conductive post, a conductive sheet, a conductive strip, a conductive via, or the like. The second end 1102 of the first radiating portion 110 is disposed opposite the second end 1121 of the second radiating portion 112. In one embodiment, the opening 111 is formed between the second end 1102 of the first radiating portion 110 and the second end 1121 of the second radiating portion 112. In this embodiment, an opening 111 is formed between the second end 1102 of the first radiating portion 110 and the second end 1121 of the second radiating portion 112, the flow direction of the first distributed current I1 of the first radiating portion 110 is opposite to the flow direction of the second distributed current I2 of the second radiating portion 112 in the first resonant mode, the first electromagnetic field is concentrated between the first radiating portion 110 and the second radiating portion 112, a radiation caliber is formed at the opening 111, and the radiation caliber is suitable for transmitting and receiving the first electromagnetic wave signals of low frequency, medium frequency and long distance transmission, and better omnidirectionality can be realized, so that the capability of the radiator 101 for receiving the first electromagnetic wave signals of different angles is improved.

In an embodiment, referring to fig. 14 and 15, the radiator 101 further includes a third radiating portion 117. The third radiating portion 117 is connected between the first end 1101 of the first radiating portion 110 and the first end 1120 of the second radiating portion 112. The third radiation portion 117 may be a radiation column, a radiation bar, a radiation sheet, or the like. The material of the third radiation portion 117 may be a metal, an alloy, a composite conductive material, or the like. In the embodiment of the present application, the third radiation portion 117 is a metal sheet. The third radiating portion 117 is connected between the first end 1101 of the first radiating portion 110 and the first end 1120 of the second radiating portion 112, and seals the first end 1101 of the first radiating portion 110 from the first end 1120 of the second radiating portion 112. In this embodiment, the third radiating portion 117 is connected between the first end 1101 of the first radiating portion 110 and the first end 1120 of the second radiating portion 112, and the opening 111 is formed between the second end 1102 of the first radiating portion 110 and the second end 1121 of the second radiating portion 112, and the third radiating portion 117 is disposed opposite to the opening 111, so that the first radiating portion 110 and the second radiating portion 112 are parallel to each other when the dimensions of the third radiating portion 117 and the opening 111 are the same or similar, thereby facilitating the processing, manufacturing and integrally forming of the radiator 101 of the antenna device 10.

In another embodiment, referring to fig. 16 and 17, the third end 1103 of the first radiating portion 110 is connected between the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110. The third end 1123 of the second radiating portion 112 is connected between the first end 1120 of the second radiating portion 112 and the second end 1121 of the second radiating portion 112. The third end 1103 of the first radiating portion 110 may be understood as the second edge 110b of the first radiating portion 110 or a partial area near the second edge 110b of the first radiating portion 110. The third end 1123 of the second radiating portion 112 may be understood as the sixth edge 112b of the second radiating portion 112 or a partial region near the sixth edge 112b of the second radiating portion 112. The radiator 101 further comprises a fourth radiating portion 118. The fourth radiating portion 118 is connected between the third end 1103 of the first radiating portion 110 and the third end 1123 of the second radiating portion 112. The fourth radiating portion 118 may be a radiating column, a radiating strip, a radiating patch, or the like. The material of the fourth radiating portion 118 may be a metal, an alloy, a composite conductive material, or the like. In the embodiment of the present application, the fourth radiating portion 118 is a metal sheet. The fourth radiating portion 118 is connected between the third end 1103 of the first radiating portion 110 and the third end 1123 of the second radiating portion 112, and seals the third end 1103 of the first radiating portion 110 and the third end 1123 of the second radiating portion 112. In the first resonant mode of the present embodiment, the transmission manner of the first electromagnetic wave signal is substantially the same as that of the above embodiment, and the present embodiment is applicable to the transceiving of the first electromagnetic wave signal transmitted at low frequency, intermediate frequency and long distance, however, compared with the above embodiment, the opening 111 area between the first radiating portion 110 and the second radiating portion 112 is reduced, the closed area is increased, which is beneficial to improving the quality factor of the antenna device 10 and reducing the return loss.

In still another embodiment, referring to fig. 18 and 19, the fourth end 1104 of the first radiating portion 110 is connected between the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110 and is disposed opposite to the third end 1103 of the first radiating portion 110. The fourth end 1124 of the second radiating portion 112 is connected between the first end 1120 of the second radiating portion 112 and the second end 1121 of the second radiating portion 112 and is disposed opposite the fourth end 1104 of the first radiating portion 110. The fourth end 1104 of the first radiation portion 110 may be understood as a fourth edge 110d of the first radiation portion 110 or a partial area near the fourth edge 110d of the first radiation portion 110. The third end 1123 of the second radiating portion 112 may be understood as the eighth edge 112d of the second radiating portion 112 or a partial region near the eighth edge 112d of the second radiating portion 112. The radiator 101 further comprises a fifth radiating portion 115. The fifth radiating portion 115 is connected between the fourth end 1104 of the first radiating portion 110 and the fourth end 1124 of the second radiating portion 112. The fifth radiating portion 115 may be a radiating column, a radiating strip, a radiating patch, or the like. The fifth radiation portion 115 may be made of metal, alloy, composite conductive material, or the like. In the embodiment of the present application, the fifth radiation portion 115 is a metal sheet. The fifth radiating portion 115 is connected between the fourth end 1104 of the first radiating portion 110 and the fourth end 1124 of the second radiating portion 112, and seals the fourth end 1104 of the first radiating portion 110 and the fourth end 1124 of the second radiating portion 112. In the first resonant mode of the present embodiment, the transmission mode of the first electromagnetic wave signal is substantially the same as that of the two embodiments, and the present embodiment is also applicable to the transmission and reception of the first electromagnetic wave signal transmitted at low frequency, medium frequency and long distance, however, compared with the two embodiments, the opening 111 area between the first radiating portion 110 and the second radiating portion 112 is further reduced, the enclosed area is further increased, and the quality factor of the antenna device 10 can be further improved, and the return loss is reduced.

Further, as shown in fig. 20, the antenna device 10 further includes a dielectric substrate 104, and the first radiation portion 110 and the second radiation portion 112 are respectively carried on opposite sides of the dielectric substrate 104. In other words, the first radiation portion 110, the dielectric substrate 104, and the second radiation portion 112 are stacked in this order. Alternatively, the first radiation portion 110 is a radiation patch, and the second radiation portion 112 is a radiation patch, and the first radiation portion 110 and the second radiation portion 112 are respectively attached to opposite sides of the dielectric substrate 104. In one embodiment, the first radiation portion 110 and the second radiation portion 112 may be adhered to opposite sides of the dielectric substrate 104. Of course, in other embodiments, the first radiation portion 110 and the second radiation portion 112 may be directly formed on opposite sides of the dielectric substrate 104. For example: the first radiation portion 110 and the second radiation portion 112 may be formed on the surface of the dielectric substrate 104 by printing, coating, etching, or the like. By providing the dielectric substrate 104, it is possible to support the first radiation portion 110 and the second radiation portion 112 and to electrically insulate the first radiation portion 110 from the second radiation portion 112.

The structure of the radiator 101 provided in the above embodiments, and the first resonant mode generated by the radiator 101 excited by the first feeding component 102 and the second resonant mode generated by the second feeding component 103 enable the antenna device 10 provided by the application to realize the co-radiator 101 of two antennas with larger frequency band differences, and simultaneously, the quality factor of the antenna device 10 can be improved, and the return loss can be reduced. In an application scenario, the radiator 101 can receive and transmit electromagnetic wave signals of the N78 (3.4 GHz-3.5 GHz) frequency band under the action of the first feeding component 102, and the radiator 101 can receive and transmit electromagnetic wave signals of the WIFI 5G (5.1 GHz-5.4 GHz) frequency band under the action of the second feeding component 103.

Optionally, the first resonant mode comprises a zero order resonant mode. The zero-order resonant mode is an antenna design technique based on composite left-and right-handed materials. The resonant wave number of the radiator 101 is zero in the zero-order resonant mode, the wavelength is infinite, and the current is uniformly distributed between the first radiation portion 110 and the second radiation portion 112. The resonant frequency of the radiator 101 in the zero-order resonant mode is independent of the length of the radiator 101 and is dependent only on the width and thickness of the radiator 101. At this time, miniaturization of the antenna device 10 can be achieved by shortening the length of the radiator 101 (i.e., the length of the first radiation portion 110 and the length of the second radiation portion 112).

As shown in fig. 21, the flow direction of the first distributed current I1 is directed in the direction of the first end 1101 of the first radiating portion 110 toward the second end 1102 of the first radiating portion 110, and the flow direction of the second distributed current I2 is directed in the direction of the second end 1102 of the first radiating portion 110 toward the first end 1101 of the first radiating portion 110; alternatively, the flow direction of the first distributed current I1 is directed in the direction of the first end 1101 of the first radiating portion 110 along the second end 1102 of the first radiating portion 110, and the flow direction of the second distributed current I2 is directed in the direction of the second end 1102 of the first radiating portion 110 along the first end 1101 of the first radiating portion 110. Based on the opposite directions of the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110 illustrated in the above embodiment, the flow direction of the first distributed current I1 is forward along the Y axis, and the second distributed current I2 is reverse along the Y axis in the embodiment of the present application; alternatively, the flow direction of the first distributed current I1 is reversed along the Y-axis, and the second distributed current I2 is forward along the Y-axis. The first distribution current I1 and the second distribution current I2 flow in a direction opposite to the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110, so that a loop current is formed between the first end 1101 of the first radiating portion 110, the second end 1102 of the first radiating portion 110, the opening 111 between the second end 1102 of the first radiating portion 110 and the second end 1121 of the second radiating portion 112, and the first end 1120 of the second radiating portion 112, and the first electromagnetic field is concentrated between the first radiating portion 110 and the second radiating portion 112.

Referring to fig. 21 and 22, the flow direction of the third distribution current I3 intersects the flow direction of the first distribution current I1, and the flow direction of the fourth distribution current I4 intersects the flow direction of the second distribution current I2. Alternatively, the angle between the flow direction of the third distribution current I3 and the flow direction of the first distribution current I1 may be 30 ° to 90 °. The angle between the flow direction of the fourth distribution current I4 and the flow direction of the second distribution current I2 may be 30 ° to 90 °. In one embodiment, the third distribution current I3 flows in a direction perpendicular to the first distribution current I1, and the fourth distribution current I4 flows in a direction perpendicular to the second distribution current I2. In the embodiment of the application, the flow direction of the third distributed current I3 and the flow direction of the fourth distributed current I4 can all be along the positive direction of the X axis; alternatively, the flow direction of the third distribution current I3 and the flow direction of the fourth distribution current I4 may be reversed along the X-axis. The flow direction of the third distributed current I3 is orthogonal to the flow direction of the first distributed current I1, so that the interference between the third distributed current I3 and the first distributed current I1 can be reduced, the flow direction of the fourth distributed current I4 is orthogonal to the flow direction of the second distributed current I2, and the interference between the fourth distributed current I4 and the second distributed current I2 can be reduced, so that the two antennas share the same radiator 101 and have higher isolation.

Referring to fig. 23 and 24, the first feeding point 113 is located at a middle line of the first end 1101 of the first radiating portion 110 or a middle line of the first end 1120 of the second radiating portion 112. In other words, the first feeding point 113 is located at a target midpoint of the first radiating portion 110 or a target midpoint of the second radiating portion 112, the target midpoint of the first radiating portion 110 being one of midpoints of the first radiating portion 110 in the X-axis direction, the target midpoint of the second radiating portion 112 being one of midpoints of the second radiating portion 112 in the X-axis direction. Note that, the middle line of the first feeding point 113 at the first end 1101 of the first radiating portion 110 may be the middle line of the first feeding point 113 at the first end 1101 of the first radiating portion 110, or a small deviation may be allowed. In an embodiment, a distance between the first feeding point 113 and a middle branching line of the first end 1101 of the first radiating portion 110 is greater than or equal to zero and less than or equal to a first preset value. The first feeding point 113 is located at a middle branching line of the first end 1120 of the second radiating portion 112, which may be that the first feeding point 113 coincides with the middle branching line of the first end 1120 of the second radiating portion 112, or a small deviation may be allowed, that is, a distance between the first feeding point 113 and the middle branching line of the first end 1120 of the second radiating portion 112 is greater than or equal to zero and less than or equal to a first preset value. Wherein the first preset value may be 1mm to 5mm. In the following embodiments, a middle line where the first feeding point 113 is located at the first end 1101 of the first radiating portion 110 is taken as an example.

In an embodiment, referring to fig. 23 and 24, the first feeding point 113 is located on a middle line of the first end 1101 of the first radiating portion 110, wherein the middle line of the first end 1101 of the first radiating portion 110 may refer to a line segment MN in fig. 23. It is understood that the first feeding point 113 is located at or near the midpoint of the first radiating portion 110 in the X-axis direction.

When the first feeding point 113 is located at the first radiating portion 110, a distance between the first feeding point 113 and the first end 1101 of the first radiating portion 110 is less than or equal to a distance between the first feeding point 113 and the second end 1102 of the first radiating portion 110. Wherein, when the distance between the first feeding point 113 and the first end 1101 of the first radiating portion 110 is equal to the distance between the first feeding point 113 and the second end 1102 of the first radiating portion 110, the first feeding point 113 is located at the geometric center point of the first radiating portion 110. When the distance between the first feeding point 113 and the first end 1101 of the first radiating portion 110 is smaller than the distance between the first feeding point 113 and the second end 1102 of the first radiating portion 110, the first feeding point 113 is close to the first end 1101 of the first radiating portion 110 and is far from the second end 1102 of the first radiating portion 110. When the first feeding point 113 is located at the second radiating portion 112, a distance between the first feeding point 113 and the first end 1120 of the second radiating portion 112 is less than or equal to a distance between the first feeding point 113 and the second end 1121 of the second radiating portion 112. Wherein, when the distance between the first feeding point 113 and the first end 1120 of the second radiating portion 112 is equal to the distance between the first feeding point 113 and the second end 1121 of the second radiating portion 112, the first feeding point 113 is located at the geometric center point of the second radiating portion 112. When the distance between the first feeding point 113 and the first end 1120 of the second radiating portion 112 is smaller than the distance between the first feeding point 113 and the second end 1121 of the second radiating portion 112, the first feeding point 113 is close to the first end 1120 of the second radiating portion 112 and is far from the second end 1121 of the second radiating portion 112. The embodiment can make the radiator 101 have better impedance matching, and improve the radiation efficiency of the radiator 101 in the first resonance mode.

The second feeding point 114 is located at a target edge of the first radiating portion 110 or at a target edge of the second radiating portion 112, the target edge being an edge end connecting the first end and the second end. Specifically, the target edge of the first radiating portion 110 is an edge of the first radiating portion 110 connected between the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110, and the target edge of the second radiating portion 112 is an edge of the second radiating portion 112 connected between the first end 1120 of the second radiating portion 112 and the second end 1121 (refer to fig. 21) of the second radiating portion 112. In the embodiment of the present application, the first radiating portion 110 is connected to an edge between the first end 1101 of the first radiating portion 110 and the second end 1102 of the first radiating portion 110, that is, the second edge 110b of the first radiating portion 110 or the fourth edge 110d of the first radiating portion 110. The second radiating portion 112 is connected to an edge between the first end 1120 of the second radiating portion 112 and the second end 1121 of the second radiating portion 112, i.e., a sixth edge 112b of the second radiating portion 112 or an eighth edge 112d of the second radiating portion 112. The second feeding point 114 may be located at the target edge of the first radiating portion 110, where the second feeding point 114 coincides with the target edge of the first radiating portion 110, or a small deviation may be allowed, that is, the distance between the second feeding point 114 and the target edge of the first radiating portion 110 is greater than or equal to zero and less than or equal to a second preset value. The second feeding point 114 may be located at the target edge of the second radiating portion 112, where the second feeding point 114 coincides with the target edge of the second radiating portion 112, or a small deviation may be allowed, that is, the distance between the second feeding point 114 and the target edge of the second radiating portion 112 is greater than or equal to zero and less than or equal to a second preset value. Wherein the second preset value may be 1mm to 5mm. In the following embodiments, the second feeding point 114 is located at the target edge of the second radiating portion 112.

In one embodiment, the second feeding point 114 is located on the second radiating portion 112, and the second radiating portion 112 has a first target edge and a second target edge disposed opposite to each other in a direction along the third end 1123 of the second radiating portion 112 and directed toward the fourth end 1124 of the second radiating portion 112. The direction in which the third end 1123 of the second radiating portion 112 points to the fourth end 1124 of the second radiating portion 112 may be understood as a direction in which the sixth edge 112b of the second radiating portion 112 is opposite to the eighth edge 112d of the second radiating portion 112, i.e., an X-axis direction in the drawing. In the present embodiment, the sixth edge 112b of the second radiating portion 112 and the eighth edge 112d of the second radiating portion 112 form a first target edge and a second target edge, respectively. The first target edge forms a target edge of the second radiating portion 112, or the second target edge forms a target edge of the second radiating portion 112. In other words, the distance between the second feeding point 114 and the sixth edge 112b of the second radiating portion 112 (i.e., the third end of the second radiating portion 112) is smaller than the second preset value, or the distance between the second feeding point 114 and the eighth edge 112d of the second radiating portion 112 (i.e., the fourth end of the second radiating portion 112) is smaller than the second preset value. It can be appreciated that the second feeding point 114 is close to an edge of the second radiating portion 112 along the X-axis direction, and the second feeding point 114 may be close to a sixth edge 112b of the second radiating portion 112 in this embodiment; alternatively, the second feeding point 114 is close to the eighth edge 112d of the second radiating portion 112. Optionally, the edge of the second feeding point 114 is located at the sixth edge 112b of the second radiating portion 112, or the edge of the second feeding point 114 is located at the eighth edge 112d of the second radiating portion 112, or, a distance between the edge of the second feeding point 114 and the sixth edge 112b of the second radiating portion 112 is greater than zero and less than 5mm, or, a distance between the edge of the second feeding point 114 and the eighth edge 112d of the second radiating portion 112 is greater than zero and less than 5mm.

Since the excitation current is mirror symmetrical on both sides of the feeding point, by making the first feeding point 113 close to the midpoint of the first radiating portion 110 along the X-axis direction, the first distributed current I1 and the second distributed current I2 can be respectively made to be forward along the Y-axis and backward along the Y-axis, and making the second feeding point 114 close to the sixth edge 112b or the eighth edge 112d of the second radiating portion 112 is beneficial to making the third distributed current I3 and the fourth distributed current I4 along the X-axis direction, i.e. beneficial to forming the first resonant mode and the second resonant mode in which the currents are orthogonal. Of course, in other embodiments, the first distributed current I1 and the second distributed current I2 may be forward along the X-axis and reverse along the X-axis, and the third distributed current I3 and the fourth distributed current I4 may be along the Y-axis.

As shown in fig. 24, the first feeding assembly 102 includes a first feeding member 121 and a first signal source 120. The second feeding assembly 103 includes a second feeding member 131 and a second signal source 130. The first power feeding member 121 may include one or more of a microstrip line, a coaxial line, a metal probe, and the like. The second feeding member 131 may include one or more of a microstrip line, a coaxial line, a conductive clip, a metal probe, and the like. The first signal source 120 may include a signal receiver, a signal transmitter, a circuit switch, a power amplifier, a low noise amplifier, etc., and the first signal source 120 has a first receiving channel and a first transmitting channel. The second signal source 130 may include a signal receiver, a signal transmitter, a circuit switch, a power amplifier, a low noise amplifier, etc., and the second signal source 130 has a second receiving channel and a second transmitting channel. The first signal source 120 and the second signal source 130 may be integrated into a radio frequency chip or may be disposed independently of each other.

The first feeding member 121 is disposed on a side of the first radiation portion 110 facing the second radiation portion 112, one end of the first feeding member 121 penetrates through the second radiation portion 112 and is electrically connected to the first feeding point 113, and the other end of the first feeding member 121 is electrically connected to the first signal source 120. In an embodiment, the first feeding point 113 is located at a side of the first radiating portion 110 facing the second radiating portion 112, the second radiating portion 112 is provided with a through hole 1125, and one end of the first feeding member 121 extends into the through hole 1125 through a side of the second radiating portion 112 facing away from the first radiating portion 110, and extends toward a side of the first radiating portion 110 through the second radiating portion 112 to be abutted against the first feeding point 113. The other end of the first power feeding member 121 and the first signal source 120 may be electrically connected by a conductive wire. The second feeding member 131 is disposed on a side of the second radiation portion 112 facing away from the first radiation portion 110, one end of the second feeding member 131 is electrically connected to the second feeding point 114, and the other end of the second feeding member 131 is electrically connected to the second signal source 130. In an embodiment, the second feeding point 114 is located at a side of the second radiating portion 112 away from the first radiating portion 110, the second feeding member 131 is disposed at a side of the second radiating portion 112 away from the first radiating portion 110, one end of the second feeding member 131 is abutted to the second feeding point 114, and the other end of the second feeding member 131 and the second signal source 130 can be electrically connected through a conductive wire.

Since the first radiation portion 110 and the second radiation portion 112 are disposed opposite to each other, the first feeding element 121 is disposed on a side of the first radiation portion 110 facing the second radiation portion 112, and the second feeding element 131 is disposed on a side of the second radiation portion 112 facing away from the first radiation portion 110, i.e., the first feeding element 121 and the second feeding element 131 are disposed on the same side of the first radiation portion 110, which is beneficial to reducing the size of the antenna device 10 in the thickness direction.

Further, referring to fig. 25 and 26, the antenna device 10 further includes a ground layer 105 and at least one ground member 106. The number of the grounding members 106 is not particularly limited in the present application. The number of the grounding members 106 may be one, two, three, or more. The first radiation portion 110, the second radiation portion 112, and the ground layer 105 are arranged in this order. In the embodiment of the present application, the first radiation portion 110, the second radiation portion 112, and the ground layer 105 are sequentially stacked along the Z-axis direction. The other end of the first feeding member 121 may penetrate through the ground layer 105 and be electrically connected to the first signal source 120, or may extend from between the second radiating portion 112 and the ground layer 105 to be electrically connected to the first signal source 120. The other end of the second feeding member 131 may penetrate through the ground layer 105 and be electrically connected to the second signal source 130, or may extend from between the second radiating portion 112 and the ground layer 105 to be electrically connected to the second signal source 130. The side of the second radiation portion 112 facing away from the first radiation portion 110 is provided with at least one grounding point 116. The number of ground points 116 is not particularly limited in the present application. The number of ground points 116 may be one, two, three, and more, etc. The number of ground points 116 is the same as the number of ground members 106. The grounding member 106 is disposed between the second radiation portion 112 and the grounding layer 105, and one end of the grounding member 106 is electrically connected to the grounding point 116, and the other end of the grounding member 106 is electrically connected to the grounding layer 105. By disposing the grounding member 106 between the second radiation portion 112 and the ground layer 105, the grounding member 106, the first feeding member 121 and the second feeding member 131 are all located on the same side of the first radiation portion 110, so that the size of the antenna device 10 in the thickness direction can be reduced, and the compactness of the antenna device 10 can be improved.

The orthographic projection of the grounding point 116 on the surface of the first radiation portion 110 is close to the first feeding point 113 and far from the orthographic projection of the second feeding point 114 on the surface of the first radiation portion 110. In one embodiment, the at least one ground point 116 includes a first ground point and a second ground point that are spaced apart. The first ground point and the second ground point are located at both sides of the through hole 1125. The at least one ground 106 includes a first ground and a second ground. The first grounding piece and the second grounding piece can be grounding posts, grounding rings and the like. The first grounding member is electrically connected between the first grounding point and the ground layer 105, and the second grounding member is electrically connected between the second grounding point and the ground layer 105. The distance between the first ground member and the first power feeding member 121 is smaller than the distance between the first ground member and the second power feeding member 131. The distance between the second ground member and the first power feeding member 121 is smaller than the distance between the second ground member and the second power feeding member 131. In another embodiment, the number of the grounding points 116 is one, the grounding points 116 surrounds the through hole 1125 for one circle, the number of the grounding pieces 106 is one, the grounding piece 106 surrounds the outer circumference side of the first power feeding piece 121, one end of the grounding piece 106 is electrically connected to the grounding point 116, and the other end of the grounding piece 106 is electrically connected to the grounding layer 105. The distance between the ground member 106 and the first feeding member 121 is smaller than the distance between the ground member 106 and the second feeding member 131. In the present embodiment, the grounding member 106 surrounds the outer periphery of the first feeding member 121, which is advantageous for integrating the grounding member 106 with the first feeding member 121, and simplifying the processing of the antenna device 10.

In this embodiment, the ground layer 105 and the ground member 106 are disposed, so that the ground member 106 is electrically connected between the second radiating portion 112 and the ground layer 105, and since one end of the first feeding member 121 penetrates the second radiating portion 112 and is electrically connected to the first feeding point 113, the second radiating portion 112 can be regarded as a ground in the first resonant mode, and at this time, the radiator 101 can be excited by the first feeding member 102 to form a first distributed current I1 and a second distributed current I2 with opposite flow directions on the first radiating portion 110 and the second radiating portion 112, respectively. Since the second feeding member 131 is close to the edge of the second radiating portion 112 along the target direction, the thickness of the radiator 101 is negligible in the second resonant mode, and the radiator 101, the ground member 106 and the second feeding member 131 form an inverted-F-like antenna, and at this time, the radiator 101 can be excited by the second feeding member 103 to generate the inverted-F-like second resonant mode, and the third distributed current I3 and the fourth distributed current I4 flowing in the same direction are formed on the first radiating portion 110 and the second radiating portion 112.

Alternatively, as shown in fig. 27, the ground 201 of the circuit board 20 forms the ground layer 105 of the antenna device 10. By forming the ground plane 201 of the circuit board 20 into the ground plane 105 of the antenna device 10, the components of the circuit board assembly 1 can be reduced, so that the overall thickness of the circuit board assembly 1 is smaller, which is beneficial to realizing the light and thin circuit board assembly 1.

As shown in fig. 28, curve 1 in the drawing is a reflection coefficient curve of the radiator 101 in the first resonant mode, and according to curve 1, it is possible to obtain an electromagnetic wave signal of the N78 frequency band that can be transmitted and received by the antenna device 10. In the figure, curve 2 is a reflection coefficient curve of the radiator 101 in the second resonance mode, and according to the curve 2, it is possible to obtain an electromagnetic wave signal that can be transmitted and received by the antenna device 10 in the WIFI 5G frequency band. In the figure, a curve 3 is an isolation curve of a first resonance mode and a second resonance mode, and according to the curve 3, the isolation of the first resonance mode and the second resonance mode is smaller than-12 dB, and the isolation in the two modes is good. As shown in fig. 29, curve 4 in the figure is a radiation efficiency curve of the radiator 101 in the first resonant mode, and according to curve 4, the total radiation efficiency of the radiator 101 is greater than-10 dB in the N78 frequency band, and the radiation efficiency is better. In the figure, curve 5 is a radiation efficiency curve of the radiator 101 in the second resonance mode, and according to curve 5, the total radiation efficiency of the radiator 101 is greater than-3 dB when the WIFI 5G frequency band can be obtained, and the radiation efficiency is better.

Referring to fig. 30 and 31, fig. 30 is a schematic diagram of electric field distribution of the antenna device 10 provided by the present application in the first resonant mode, fig. 31 is a schematic diagram of electric field distribution of the antenna device 10 provided by the present application in the second resonant mode, and it can be seen in combination with fig. 30 and 31 that the electric field of the antenna device 10 in the first resonant mode (3.6 GHz) is concentrated between the first radiation portion 110 and the second radiation portion 112, and the electric field in the second resonant mode (5.3 GHz) is concentrated between the second radiation portion 112 and the ground layer 105, and the electric field distribution in the two modes is different. Referring to fig. 32 and 33, fig. 32 is a schematic diagram of a current distribution of the first radiating portion 110 of the antenna device 10 provided by the present application in the first resonant mode, it can be seen that a first distribution current I1 of the first radiating portion 110 is along the Y-axis direction in the drawing, fig. 33 is a schematic diagram of a current distribution of the first radiating portion 110 of the antenna device 10 provided by the present application in the second resonant mode, it can be seen that a third distribution current I3 of the first radiating portion 110 is along the X-axis direction, the first distribution current I1 is orthogonal to the third distribution current I3, and the isolation of the antenna device 10 in the two modes is better.

The features mentioned in the description, the claims and the drawings may be combined with one another at will as far as they are relevant within the scope of the application. The advantages and features described for the antenna device 10 apply in a corresponding manner to the circuit board assembly 1 and the electronic apparatus 100. While embodiments of the present application have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and alternatives to the above embodiments may be made by those skilled in the art within the scope of the application, which is also to be regarded as being within the scope of the application.

Claims

1. An antenna device, comprising:

2. The antenna device according to claim 1, wherein a first end of a first radiating portion is disposed opposite a second end of the first radiating portion, a first end of a second radiating portion is disposed opposite a second end of the second radiating portion, the first end of the first radiating portion is electrically connected to the first end of the second radiating portion, and the second end of the first radiating portion is disposed opposite the second end of the second radiating portion; the first feeding point is located at a middle branching line of the first end of the first radiating portion or a middle branching line of the first end of the second radiating portion, the second feeding point is located at a target edge of the first radiating portion or a target edge of the second radiating portion, and the target edge is an edge end connecting the first end and the second end.

3. The antenna device according to claim 2, wherein a distance between the first feeding point and a first end of the first radiating portion is less than or equal to a distance between the first feeding point and a second end of the first radiating portion when the first feeding point is located at the first radiating portion; when the first feeding point is located at the second radiating portion, a distance between the first feeding point and a first end of the second radiating portion is smaller than or equal to a distance between the first feeding point and a second end of the second radiating portion.

4. The antenna device according to claim 2, wherein the radiator further comprises a third radiating portion connected between the first end of the first radiating portion and the first end of the second radiating portion.

5. The antenna device according to claim 2, wherein a third end of a first radiating portion is connected between a first end of the first radiating portion and a second end of the first radiating portion, a third end of a second radiating portion is connected between the first end of the second radiating portion and the second end of the second radiating portion, the radiator further comprising a fourth radiating portion connected between the third end of the first radiating portion and the third end of the second radiating portion.

6. The antenna device according to claim 5, wherein a fourth end of a first radiating portion is connected between a first end of the first radiating portion and a second end of the first radiating portion and is disposed opposite to a third end of the first radiating portion, a fourth end of a second radiating portion is connected between the first end of the second radiating portion and the second end of the second radiating portion and is disposed opposite to the third end of the second radiating portion, and the radiator further comprises a fifth radiating portion connected between the fourth end of the first radiating portion and the fourth end of the second radiating portion.

7. The antenna device according to any one of claims 1 to 6, wherein the first resonant mode comprises a zero order resonant mode.

8. The antenna device according to any one of claims 2 to 6, wherein a flow direction of the first distributed current is directed in a direction in which a first end of the first radiating portion is directed to a second end of the first radiating portion, and a flow direction of the second distributed current is directed in a direction in which the second end of the first radiating portion is directed to the first end of the first radiating portion; or, the flow direction of the first distributed current is directed along the direction of the second end of the first radiating portion, and the flow direction of the second distributed current is directed along the direction of the first end of the first radiating portion.

9. The antenna device according to any one of claims 1 to 6, wherein a flow direction of the third distribution current intersects a flow direction of the first distribution current, and a flow direction of the fourth distribution current intersects a flow direction of the second distribution current.

10. The antenna device according to any one of claims 1 to 6, wherein the first feeding point is located on the first radiating portion, the second feeding point is located on the second radiating portion, the antenna device further comprises a first feeding member and a second feeding member, the first feeding member is located on a side of the first radiating portion facing the second radiating portion, one end of the first feeding member penetrates through the second radiating portion and is electrically connected with the first feeding point, the other end of the first feeding member is electrically connected with the first signal source, the second feeding member comprises a second feeding member and a second signal source, the second feeding member is located on a side of the second radiating portion facing away from the first radiating portion, one end of the second feeding member is electrically connected with the second feeding point, and the other end of the second feeding member is electrically connected with the second signal source.

11. The antenna device according to any one of claims 1 to 6, further comprising a ground layer and at least one ground member, wherein the first radiating portion, the second radiating portion and the ground layer are sequentially arranged, at least one ground point is disposed on a side of the second radiating portion facing away from the first radiating portion, the ground member is disposed between the second radiating portion and the ground layer, one end of the ground member is electrically connected to the ground point, and the other end of the ground member is electrically connected to the ground layer.

12. The antenna device according to any one of claims 1 to 6, further comprising a dielectric substrate, wherein the first radiating portion and the second radiating portion are respectively carried on opposite sides of the dielectric substrate.

13. A circuit board assembly comprising a circuit board and an antenna device according to any one of claims 1 to 12, said antenna device being provided on said circuit board, said circuit board comprising a reference ground, said reference ground forming a ground plane for said antenna device.

14. An electronic device comprising a housing assembly and the circuit board assembly of claim 13, the circuit board assembly disposed within the housing assembly.