WO2023221489A1

WO2023221489A1 - Electronic device

Info

Publication number: WO2023221489A1
Application number: PCT/CN2022/139312
Authority: WO
Inventors: 王泽东
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-05-17
Filing date: 2022-12-15
Publication date: 2023-11-23
Also published as: CN117117458A

Abstract

Disclosed in the present application is an electronic device, comprising an antenna apparatus, and a foldable body having an unfolded state and a folded state. The antenna apparatus comprises a first antenna assembly and a second antenna assembly, which are arranged on the foldable body. The first antenna assembly comprises: a first antenna radiator, wherein a first ground end and a first free end are arranged in a first direction; a first switching circuit; and a first feed source. The second antenna assembly comprises a second antenna radiator, wherein a second ground end and a second free end are arranged in a second direction, the second direction being the same as the first direction. When the foldable body is in the unfolded state, the first antenna radiator and the second antenna radiator are respectively arranged at two opposite sides of the foldable body, and the first antenna assembly and the second antenna assembly support a first low frequency band; and when the foldable body is in the folded state, the first antenna radiator and the second antenna radiator are located at the same side of the foldable body, the first antenna assembly supports an intermediate frequency band and/or a high frequency band, or the first antenna radiator is disconnected from the first feed source by means of the first switching circuit.

Description

Electronic equipment

This application claims priority from an earlier application with application number 202210537013.7, titled "Electronic Equipment", submitted on May 17, 2022. The contents of the above-mentioned earlier application are incorporated into this text by reference.

Technical field

This application relates to the field of communication technology, and specifically to an electronic device.

Background technique

With the development of large screens in electronic devices, foldable electronic devices have become a research and development hotspot. Antennas are an important part of communication on electronic devices. The isolation and envelope correlation coefficients between multiple antennas are affected by changes in the folding state of foldable electronic devices. Therefore, how to improve the performance of foldable electronic devices? The antenna performance of the antenna device in different forms has become the focus of research.

Contents of the invention

In a first aspect, an embodiment of the present application provides an electronic device. The electronic device includes:

The foldable body has an unfolded state and a folded state; and

An antenna device includes a first antenna component and a second antenna component provided on the foldable body;

The first antenna assembly includes a first antenna radiator and a first feed source electrically connected to the first antenna radiator through a first switching circuit. The first antenna radiator has a first ground terminal and a first free end, the first antenna radiator is connected to the foldable body through the first ground end, and the direction from the first ground end to the first free end is the first direction;

The second antenna assembly includes a second antenna radiator, the second antenna radiator has a second ground end and a second free end, and the second antenna radiator is connected to the foldable end through the second ground end. The main body is connected, and the direction from the second ground end to the second free end is a second direction, and the second direction is the same as the first direction;

When the foldable body is in the unfolded state: the first antenna radiator and the second antenna radiator are located on opposite sides of the foldable body respectively, and the first antenna component and the second antenna component are To support the first low frequency band;

When the foldable body is in the folded state: the first antenna radiator and the second antenna radiator are located on the same side of the foldable body, and the first antenna component is used to support medium frequency bands and/or high frequency bands. frequency band, or the first antenna radiator is disconnected from the first feed source through the first switching circuit.

In a second aspect, embodiments of the present application further provide an electronic device, which includes:

The foldable body has an unfolded state and a folded state; and

An antenna device includes a first antenna component, a second antenna component, a third antenna component and a fourth antenna component provided on the foldable body;

The first antenna assembly includes a first antenna radiator, the first antenna radiator has a first ground end and a first free end, and the first antenna radiator is connected to the foldable body through the first ground end, The direction from the first ground end to the first free end is the first direction;

The first antenna radiator and the second antenna radiator are respectively located on opposite sides of the foldable body when the foldable body is in an unfolded state; the first antenna radiator and the second antenna radiator are located on the opposite sides of the foldable body. The foldable body is located on the same side of the foldable body when it is in a folded state;

The third antenna assembly includes a third antenna radiator, the third antenna radiator has a third ground end and a third free end, and the direction from the third ground end to the third free end is a third direction;

The fourth antenna assembly includes a fourth antenna radiator, the fourth antenna radiator has a fourth ground end and a fourth free end, and the direction from the fourth ground end to the fourth free end is a fourth direction, Wherein, the fourth direction is opposite to the third direction;

When the foldable body is in the unfolded state, the first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to support MIMO of the first low frequency band; When the foldable body is in a folded state, the second antenna component, the third antenna component and the fourth antenna component are used to support CA or ENDC of the first low frequency band and the second low frequency band.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

Figure 2 is a three-dimensional exploded schematic view of the electronic device provided in Figure 1;

Figure 3 is a top view of the foldable main body and antenna device in Figure 2 in an unfolded state;

Figure 4 is a top view of the foldable main body and antenna device in Figure 3 in a folded state;

Figure 5 is a schematic circuit structure diagram of a first switching circuit provided by an embodiment of the present application;

Figure 6 is a schematic circuit structure diagram of a first switching circuit provided by another embodiment of the present application;

Figure 7 is a top view of the foldable main body and the antenna device in the unfolded state of the electronic device provided by another embodiment of the present application;

Figure 8 is a top view of the foldable main body and the antenna device in the unfolded state of the electronic device provided by yet another embodiment of the present application;

Figure 9 is a circuit block diagram of an electronic device provided by an embodiment of the present application;

Figure 10 is a schematic diagram of current distribution when the foldable body is in the unfolded state and the first antenna component is working;

Figure 11 is a schematic diagram of the current distribution when the foldable body is in the unfolded state and the second antenna is working;

Figure 12 is a far-field pattern of the first antenna assembly when the foldable body is in the unfolded state;

Figure 13 is the far-field pattern of the second antenna assembly when the foldable body is in the unfolded state;

Figure 14 is a schematic diagram of the ECC curves of the first antenna assembly and the second antenna assembly when the foldable body is in the unfolded state;

Figure 15 is a schematic diagram of the current distribution when the foldable body is in the unfolded state and the third antenna component is working;

Figure 16 is a schematic diagram of the current distribution when the foldable body is in the unfolded state and the fourth antenna is working;

Figure 17 is the far-field pattern of the third antenna assembly when the foldable body is in the unfolded state;

Figure 18 is the far-field pattern of the fourth antenna assembly when the foldable body is in the unfolded state;

Figure 19 is a schematic diagram of the ECC curves of the third antenna assembly and the fourth antenna assembly when the foldable body is in the unfolded state;

Figure 20 is a schematic diagram of the ECC curves of each antenna assembly when the foldable body is in the unfolded state;

Figure 21 is a schematic diagram of the foldable main body of the electronic device provided by yet another embodiment of the present application in an unfolded state;

Figure 22 is a schematic diagram of the foldable main body in Figure 21 in a folded state;

Figure 23 is a schematic diagram of the foldable main body in the electronic device provided by another embodiment of the present application in an unfolded state;

FIG. 24 is a schematic diagram of the foldable main body of the electronic device in FIG. 23 in a folded state.

Label description:

Electronic equipment 1;

Antenna device 10;

The first antenna component 110, the first antenna radiator 111, the first ground terminal 111a, the first free terminal 111b, the first feed point A1, the first switching circuit SW1, the first feed source S1, and the first matching circuit M1;

Switching subcircuit 1121, filtering subcircuit 1122, low pass subcircuit 1123, first regulating subcircuit 1124, second regulating subcircuit 1125, regulating subcircuit 1126, grounding subcircuit 1127;

The second antenna component 120, the second antenna radiator 121, the second ground terminal 121a, the second free terminal 121b, the second switching circuits SW2, SW3, SW4, the second feed source S2, and the second matching circuit M2;

The third antenna component 130, the third antenna radiator 131, the third ground terminal 131a, the third free terminal 131b, the third feed source S3, and the third matching circuit M3;

The fourth antenna component 140, the fourth antenna radiator 141, the fourth ground terminal 141a, the fourth free terminal 141b, the fourth feed source S4, and the fourth matching circuit M4;

Foldable body 20;

The first body 210, the second body 220, the rotating shaft 230, and the axis L0;

The first side 211, the second side 212, the third side 213, the first corner portion 210a, the third corner portion 210b;

The fourth side 221, the fifth side 222, the sixth side 223, the second corner part 220a, the fourth corner part 220b;

The first longitudinal current I ₁₁ , the first transverse current I ₁₂ , the second longitudinal current I ₂₁ , the second transverse current I ₂₂ , the third longitudinal current I ₃₁ , the third transverse current I ₃₂ , the fourth longitudinal current I ₄₁ , Four transverse currents I ₄₂ ;

The first current I ₀₁ , the second current I ₀₂ , the first equivalent current I ₀₃ , and the second equivalent current I ₀₄ ;

Display 30, housing 40, detector 50, controller 60.

Detailed ways

The foldable body has an unfolded state and a folded state; and

Wherein, the antenna device further includes a third antenna component and a fourth antenna component provided on the foldable body;

When the foldable body is in the unfolded state, the first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to support MIMO of the first low frequency band;

When the foldable body is in a folded state, the second antenna component, the third antenna component and the fourth antenna component are used to support CA or ENDC of the first low frequency band and the second low frequency band.

Wherein, the foldable body includes a first corner part, a second corner part, a third corner part and a fourth corner part. When the foldable body is in an unfolded state, the first corner part and the second corner part The corner portion is arranged diagonally, the third corner portion and the fourth corner portion are arranged diagonally, and the first corner portion and the third corner portion are located on the same side of the axis of the foldable body, and the The second corner part and the fourth corner part are located on the same side of the axis of the foldable body; the first antenna radiator is located between the first corner part and the third corner part, and the first direction parallel to the axis; the second antenna radiator is located between the second corner part and the fourth corner part, and the second direction is parallel to the axis.

Wherein, the first free end is arranged adjacent to the third corner portion compared to the first ground end; and the second free end is arranged adjacent to the second corner portion compared to the second ground end.

Wherein, when the foldable body is in a folded state, the first antenna radiator is disconnected from the first feed source through the first switching circuit, and the first antenna radiator is connected to the second feed source. Antenna radiator coupling.

Wherein, the electronic equipment also includes:

A detector, the detector is used to detect the state of the foldable body to obtain a detection signal, wherein the state of the foldable body includes a folded state and an unfolded state; and

A controller, the controller is electrically connected to the detector and the first switching circuit, the controller is used to determine whether the foldable body is in a folded state according to the detection signal, and determines whether the foldable body is in a folded state. When the main body is in the folded state, the first antenna component is controlled to support the medium frequency band and/or the high frequency band, or the first switch is controlled to cause the first antenna radiator to be disconnected through the first switch circuit. connection to said first feed.

Wherein, when the foldable body is in a folded state, the first antenna radiator and the second antenna radiator are directly opposite or offset in the extension direction of the first antenna radiator. When the first antenna radiator When the radiator and the second antenna radiator are offset, the offset distance d ₁ between the first antenna radiator and the second antenna radiator: d ₁ ≤ _{λ 1} /12, λ ₁ is the second antenna radiator. The wavelength corresponding to the frequency band supported by the antenna component.

Wherein, when the foldable body is in an unfolded state, the first antenna component or the second antenna component is used to transmit the transmission signal of the first low frequency band, the first antenna component, the second antenna component The antenna component, the third antenna component and the fourth antenna component are used to receive the received signal of the first low frequency band and implement MIMO of the first low frequency band.

Wherein, when the foldable body is in an unfolded state, the first antenna component and the second antenna component are used to transmit the transmission signal of the first low frequency band, the first antenna component, the second antenna component The antenna component, the third antenna component and the fourth antenna component are used to receive the received signal of the first low frequency band and implement MIMO of the first low frequency band.

Wherein, when the foldable body is in an unfolded state, the first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to transmit the first low frequency band. Transmitting signals, the first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to receive the reception signal of the first low frequency band to achieve the first low frequency band MIMO.

Wherein, the third antenna component includes a third antenna radiator, the third antenna radiator and the first antenna radiator are located on the same side of the axis of the foldable body, and are different corresponding to the foldable body. The third antenna radiator has a third ground end and a third free end, and the direction from the third ground end to the third free end is a third direction; the fourth antenna includes a fourth Antenna radiator, the fourth antenna radiator and the second antenna radiator are located on the same side of the axis of the foldable body and are arranged corresponding to different sides of the foldable body, or the fourth radiation A part of the fourth antenna radiator and the second antenna radiator are arranged corresponding to the same side of the foldable body, and the other part of the fourth antenna radiator is arranged corresponding to different sides of the foldable body and the second antenna radiator, so The fourth antenna radiator has a fourth ground end and a fourth free end, and the direction from the fourth ground end to the fourth free end is a fourth direction, wherein the third direction is opposite to the fourth direction. .

Wherein, the third direction is perpendicular to the axis of the foldable body, and the third free end is adjacent to the axis compared to the third ground end; the fourth direction is perpendicular to the axis of the foldable body. axis, the fourth free end is closer to the axis than the fourth ground end.

Wherein, the foldable body includes a first corner part, a second corner part, a third corner part and a fourth corner part. When the foldable body is in an unfolded state, the first corner part and the second corner part The corner portion is arranged diagonally, the third corner portion and the fourth corner portion are arranged diagonally, and the first corner portion and the third corner portion are located on the same side of the axis of the foldable body, and the The second corner portion and the fourth corner portion are located on the same side of the axis of the foldable body; the fourth antenna is located at the fourth corner, and the first free end is adjacent to the first ground end. As for the first corner portion, the third free end is further away from the first corner portion than the third ground end.

Wherein, the main radiation directions of the third antenna component and the fourth antenna component are opposite when the foldable body is in the unfolded state.

Wherein, the third antenna component excites a first equivalent current on the foldable body, the fourth antenna component excites a second equivalent current on the foldable body, and the second equivalent current The current is opposite to the flow direction of the first equivalent current, and the flow direction of the first equivalent current is perpendicular to the axis of the foldable body, and the flow direction of the second equivalent current is perpendicular to the axis of the foldable body. axis.

Wherein, at least one of the second antenna component, the third antenna component and the fourth antenna component further includes a second switching circuit, the second switching circuit is used to adjust the position of the second switching circuit. The effective electrical length of the radiator of the antenna component is used to adjust the frequency band supported by the antenna component where the second switching circuit is located.

Wherein, when the foldable body is in the folded state, the second antenna component is used to transmit the transmission signal of the first low frequency band and receive the main set reception signal of the first low frequency band, and the third antenna One of the components and the fourth antenna component is used to transmit the transmission signal of the second low frequency band and receive the main set reception signal of the second low frequency band, and the other is used to receive the first low frequency band. The diversity reception signal and the diversity reception signal of the second low frequency band are used to implement CA or ENDC of the first low frequency band and the second low frequency band.

Wherein, when the foldable body is in the folded state, the second antenna component is used to transmit the transmission signal of the first low frequency band and receive the main set reception signal of the first low frequency band, and the fourth antenna The component is used to transmit the transmission signal of the second low frequency band and receive the main set reception signal of the second low frequency band. The third antenna component is used to receive the diversity reception signal of the first low frequency band and the second low frequency The diversity reception signal of the frequency band realizes CA or ENDC of the first low frequency band and the second low frequency band.

Wherein, the far-field polarization directions of the first antenna component and the second antenna component are intersecting or orthogonal when the foldable body is in the unfolded state.

In a second aspect, an embodiment of the present application provides an electronic device, wherein the electronic device includes:

The foldable body has an unfolded state and a folded state; and

Wherein, the third antenna radiator and the first antenna radiator are located on the same side of the axis of the foldable body, and are arranged corresponding to different sides of the foldable body; the fourth antenna radiator is on the same side as the axis of the foldable body. The second antenna radiator is located on the same side of the axis of the foldable body and is provided corresponding to different sides of the foldable body, or the fourth radiating part corresponds to the second antenna radiator. The foldable main body is arranged on the same side, and the other parts of the fourth antenna radiator and the second antenna radiator are arranged corresponding to different sides of the foldable main body.

Wherein, when the foldable body is in the folded state, the second antenna component is used to transmit the transmission signal of the first low frequency band and receive the main set reception signal of the first low frequency band, and the third antenna One of the components and the fourth antenna component is used to transmit the transmission signal of the second low frequency band and receive the main set reception signal of the second low frequency band, and the other is used to receive the diversity of the first low frequency band. Receive the signal and the diversity reception signal of the second low-frequency band to implement CA or ENDC of the first low-frequency band and the second low-frequency band.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Furthermore, reference in this application to an "embodiment" or "implementation" means that a particular feature, structure or characteristic described in connection with the example or implementation may be included in at least one embodiment of the application. The appearances of this 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. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Please refer to Figures 1 to 4 together. Figure 1 is a schematic structural view of an electronic device provided by an embodiment of the present application; Figure 2 is a three-dimensional exploded schematic view of the electronic device provided in Figure 1; Figure 3 is a foldable main body in Figure 2 and the antenna device in the unfolded state; Figure 4 is a top view of the foldable main body and the antenna device in Figure 3 in the folded state. The present application provides a foldable electronic device 1. The electronic device 1 can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an e-reader, a handheld computer, an electronic display screen, a notebook computer, or a super mobile personal computer. Computers (ultra-mobile personal computer, UMPC), netbooks, and cellular phones, personal digital assistants (personal digital assistant, PDA), augmented reality (AR)\virtual reality (VR) devices, media players , smart wearable devices and other foldable devices. It can be understood that the foldable electronic device 1 may be a foldable display device or a foldable non-display device. In this application, the electronic device 1 is a foldable mobile phone as an example. For other devices, please refer to the specific description in this application.

Referring to FIG. 2 , the electronic device 1 includes a foldable main body 20 and an antenna device 10 . The foldable body 20 has an unfolded state and a folded state.

The foldable main body 20 is the skeleton structure of the electronic device 1 . The main body shape of the foldable main body 20 is consistent with the main body shape of the electronic device 1 . When the foldable body 20 is in the unfolded state, the electronic device 1 is in the unfolded state; when the foldable body 20 is in the folded state, the electronic device 1 is in the folded state. Specifically, the foldable body 20 includes, but is not limited to, the middle frame of the electronic device 1 .

Wherein, in the unfolded state, the foldable main body 20 can be in a flat shape of 180°, or a flat shape of approximately 180° (for example, 170°, or 175°, or 185°, etc.), or it can also be bent to a certain extent. The bending shape of the angle is not limited to the bending angle. In this embodiment, a flattened state of 180° is taken as an example. When the electronic device 1 has a display screen 30, the expanded area of the display screen 30 is relatively large when it is in the unfolded state, so that the user can enjoy the large-screen electronic device 1. The folded state refers to a state in which the foldable main body 20 is bent and stacked. At this time, the overall volume of the electronic device 1 is small and easy to carry.

Optionally, the foldable main body 20 includes, but is not limited to, a half-fold structure with one rotation axis L0, and may also be a three-fold, four-fold, etc. folding structure with two or more rotation axes L0. This embodiment is described by taking the foldable main body 20 as a foldable structure as an example.

Please refer to Figure 2. The foldable body 20 includes a first body 210 and a second body 220 that are rotationally connected. In this embodiment, at least one of the first body 210 and the second body 220 passes through a rotating shaft. 230 rotation connection. In other words, the foldable body 20 includes a first body 210 , a rotating shaft 230 and a second body 220 that are connected in sequence. In other embodiments, the first body 210 and the second body 220 are directly connected, and the connection between the first body 210 and the second body 220 is bendable. The embodiment of the present application does not limit the bending method of the foldable main body 20, as long as the foldable main body 20 can be bent.

It should be noted that at least part of the first body 210 of the foldable body 20 is made of conductive material, and at least part of the second body 220 of the foldable body 20 is made of conductive material, and the first body 210 and the first body 210 are made of conductive material. The second body 220 is electrically connected. When the foldable body 20 further includes a rotating shaft 230 , at least part of the rotating shaft 230 is made of conductive material, and the first body 210 is electrically connected to the second body 220 through the rotating shaft 230 . It can be seen that the foldable body 20 can serve as a reference ground (also called a ground pole) of the antenna device 10 .

For ease of explanation, the connection direction of the first body 210, the rotating shaft 230, and the second body 220 is defined as the negative direction of the The extension direction is the Y-axis direction. The thickness direction of the foldable body 20 in the unfolded state is the Z-axis direction. Among them, the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other. Among them, the direction indicated by the arrow is forward.

Optionally, please refer to FIG. 2 . The electronic device 1 also includes a display screen 30 . The display screen 30 is provided on one side of the foldable body 20. In this embodiment, the display screen 30 is provided on the front side of the foldable body 20 (the front side refers to the direction toward the user when the user normally uses the display screen 30). , optionally, in one embodiment, the part of the display screen 30 corresponding to the rotating shaft 230 is a bendable flexible display screen 30 . Optionally, in another embodiment, no display screen 30 is provided at the corresponding position of the rotating shaft 230 , but two display screens 30 are respectively provided on the front sides of the first body 210 and the second body 220 .

Optionally, please refer to FIG. 2 , the electronic device 1 further includes a housing 40 . The housing 40 includes a frame 410 and a back cover 420 . When the electronic device 1 is in a flattened state or a nearly flattened state, the display screen 30 and the back cover 420 are respectively located on opposite sides (front and rear sides) of the foldable body 20 , wherein the frame 410 is connected to the display screen 30 and the back cover 420 . Between the covers 420 and surrounding the foldable body 20 , the display screen 30 , the frame 410 and the back cover 420 form a relatively closed complete device of the electronic device 1 . Of course, in other implementations, the display screen 30 may also be provided on the rear side of the electronic device 1 .

The frame 410 and the back cover 420 may have an integrated structure or a separate structure. When the frame 410 and the back cover 420 are separate structures, the interior of the frame 410 can form an integrated structure with the middle frame (foldable body 20). A plurality of installation slots for installing various electronic devices are formed on the middle frame. When the display screen 30 , the middle frame and the back cover 420 are closed, a receiving space is formed on both sides of the middle frame. The electronic device 1 also includes a circuit board (including a main board, a sub-board, a flexible circuit board, etc.), a battery, a camera module, a microphone, a receiver, a speaker, a face recognition module, and a fingerprint recognition module located in the storage space. Devices that can realize the basic functions of the mobile phone, etc. will not be described again in this embodiment. It can be understood that the above introduction to the electronic device 1 is only an explanation of an environment in which the antenna device 10 is applied, and the specific structure of the electronic device 1 should not be understood as an explanation of the antenna device 10 provided in this application. limitations.

The antenna device 10 may be disposed inside the casing 40 of the electronic device 1 , or may be partially integrated with the casing 40 , or may be partially disposed outside the casing 40 . The antenna device 10 is used to receive and receive radio frequency signals, where the radio frequency signals are transmitted as electromagnetic wave signals in the air medium to realize the communication function of the electronic device 1 . This application does not specifically limit the position of the antenna device 10 on the electronic device 1. The position of the antenna device 10 on the electronic device 1 shown in FIG. 1 is just an example.

Please refer to FIG. 3 . The antenna device 10 includes a first antenna component 110 and a second antenna component 120 provided on the foldable body 20 . The first antenna component 110 includes a first antenna radiator 111 and a first feed source S1 electrically connected to the first antenna radiator 111 through a first switching circuit SW1. The first antenna radiator 111 has a first ground end 111a and a first free end 111b. The first antenna radiator 111 is connected to the foldable body 20 through the first ground end 111a. The direction from the ground end 111a to the first free end 111b is the first direction. The second antenna assembly 120 includes a second antenna radiator 121 . The second antenna radiator 121 has a second ground end 121a and a second free end 122b. The second antenna radiator 121 is connected to the foldable body 20 through the second ground end 121a, and the direction from the second ground end 121a to the second free end 122b is the second direction. The two directions are the same as the first direction. When the foldable body 20 is in the unfolded state: the first antenna radiator 111 and the second antenna radiator 121 are respectively located on opposite sides of the foldable body 20 , and the first antenna component 110 and the The second antenna component 120 is used to support the first low frequency band. When the foldable body 20 is in the folded state: the first antenna radiator 111 and the second antenna radiator 121 are located on the same side of the foldable body 20 , and the first antenna component 110 is used to support intermediate frequencies. band and/or high-frequency band, or the first antenna radiator 111 is disconnected from the first feed source S1 through the first switching circuit SW1.

The first antenna component 110 includes a first antenna radiator 111, a first switching circuit SW1 and a first feed source S1. The first feed source S1 is electrically connected to the first antenna radiator 111 through the first switching circuit SW1. The first antenna radiator 111 is a port for the first antenna component 110 to receive and receive radio frequency signals, where the radio frequency signals are transmitted in the form of electromagnetic wave signals in the air medium. This application does not specifically limit the shape of the first antenna radiator 111. For example, the shape of the first antenna radiator 111 includes but is not limited to strip shape, sheet shape, rod shape, coating shape, film shape, etc. The first antenna radiator 111 shown in the schematic diagram of this embodiment is only an example and does not limit the shape of the first antenna radiator 111 provided in this application. Optionally, when the frame is made of conductive material, the first antenna radiator 111 can be integrated with the frame, that is, the first antenna radiator 111 is a frame antenna, and a part of the frame serves as the first antenna radiator 111 . Alternatively, the first antenna radiator 111 can also be a part of the middle frame (that is, the foldable main body 20 ). In this way, the first antenna radiator 111 and the middle frame are interconnected to form an integrated structure. The first antenna radiator 111 may be formed by cutting a slit on the middle frame. In this embodiment, the frame portion corresponding to the first antenna radiator 111 can be made of non-conductive material, so that the first antenna radiator 111 can send and receive electromagnetic wave signals through the frame. Alternatively, the antenna formed by the first antenna radiator 111 is a bracket antenna. Among them, the bracket antenna includes but is not limited to a flexible circuit board antenna formed on a flexible circuit board (Flexible Printed Circuit board, FPC), a laser direct forming antenna through laser direct structuring (LDS), a direct forming through printing (Print Direct Structuring, PDS) printed direct forming antenna, conductive sheet antenna, etc. Divided in another dimension, the first antenna radiator 111 is a Planar Inverted F-shaped Antenna (PIFA).

Optionally, the material of the first antenna radiator 111 is a conductive material. Specific materials include but are not limited to metals such as copper, gold, and silver, or alloys of copper, gold, and silver, or copper, gold, and silver. Alloys formed with other materials; or other non-metal conductive materials, such as metal oxide conductive materials (such as indium tin oxide, indium tin gallium oxide) and other oxide conductive materials, or carbon nanotubes and polymers to form mixed conductive materials Materials etc.

The first antenna radiator 111 has a first feeding point A1. The first feed source S1 is electrically connected to the first feed point A1 through the first switching circuit SW1. In this embodiment, the first switching circuit SW1 is electrically connected to the first feeding point A1 of the first antenna radiator 111 . Wherein, the first feed source S1 includes but is not limited to a radio frequency transceiver chip and a radio frequency front-end circuit. Usually, the first feed source S1 is provided on the motherboard of the electronic device 1 .

The first antenna radiator 111 is electrically connected to the first feed source S1 through the first switching circuit SW1. Therefore, the first switching circuit SW1 can control the first feed source S1 to be electrically connected to the first feed source S1. The first switching circuit SW1 can also connect the first feed source S1 to the first antenna radiator 111 , and the first switching circuit SW1 can also disconnect the first feed source S1 and the first antenna radiator 111 . The connection between the first feed source S1 and the first antenna radiator 111.

Please refer to FIG. 5 , which is a schematic circuit structure diagram of a first switching circuit provided by an embodiment of the present application. In this embodiment, the first switching circuit SW1 includes a switching sub-circuit 1121 and an adjustment sub-circuit 1126. The switching sub-circuit 1121 conducts the connection between the first antenna radiator 111 and the first feed source S1, or disconnects the connection between the first antenna radiator 111 and the first feed source S1. One end of the adjustment subcircuit 1126 is grounded, and the other end is electrically connected to the switching subcircuit 1121. The adjustment subcircuit 1126 is used to when the first antenna radiator 111 is connected to the first feed source S1, The equivalent electrical length of the first antenna radiator 111 of the first antenna assembly 110 is adjusted so that the first antenna assembly 110 meets the requirements for supporting the first low frequency band when the folding body 20 is in the unfolded state. Required electrical length. The regulating subcircuit 1126 may be, but is not limited to, a capacitor, an inductor, or a combination of a capacitor and an inductor. When the foldable body 20 is in the unfolded state, the switching sub-circuit 1121 conducts the connection between the first antenna radiator 111 and the first feed source S1, and the first antenna component 110 supports the third A low frequency band. When the foldable body 20 is in the folded state, the switching sub-circuit 1121 disconnects the first antenna radiator 111 from the first feed source S1. It can be understood that when the electrical length of the first antenna radiator 111 meets the electrical length required to support the first low-frequency band, the adjustment sub-circuit 1126 may not be included in the first switching circuit SW1.

In another embodiment, please refer to FIG. 6 , which is a schematic circuit structure diagram of a first switching circuit provided in another embodiment of the present application. The first switching circuit SW1 includes a switching sub-circuit 1121, a filter sub-circuit 1122 and a low-pass sub-circuit 1123. The switching sub-circuit 1121 is used to electrically connect the filter sub-circuit 1122 or the low-pass sub-circuit 1123 to the first antenna radiator 111 . The switching subcircuit 1121 may be, but is not limited to, a single-pole double-throw switch, a double-pole double-throw switch, or other forms of switches.

In one implementation, the filter sub-circuit 1122 is configured to pass the intermediate frequency band and filter out the high frequency band and the low frequency band (including the first low frequency band) so that the first antenna component 110 supports the intermediate frequency band. When the filter sub-circuit 1122 filters out the high-frequency band and the low-frequency band through the intermediate frequency band, the filter sub-circuit 1122 is a band-pass filter circuit. In another embodiment, the filter sub-circuit 1122 is used to pass the high-frequency band and filter out the low-frequency band (including the first low-frequency band), so that the first antenna component 110 supports the high-frequency band. When the filter sub-circuit 1122 is used to pass a high-frequency band and filter out a low-frequency band, the filter sub-circuit 1122 is a high-pass filter circuit. In yet another embodiment, the filter sub-circuit 1122 is used to filter out the low-frequency band (including the first low-frequency band) through the mid-frequency band and the high-frequency band, so that the first antenna component 110 supports the mid-frequency band. and high-frequency bands. Therefore, when the switching subcircuit 1121 is used to electrically connect the filtering subcircuit 1122 to the first antenna radiator 111, the first antenna component 110 no longer supports the first low frequency band. When the foldable body 20 is in the folded state, the switching subcircuit 1121 is used to electrically connect the filtering subcircuit 1122 to the first antenna radiator 111 so that the first antenna component 110 Used to support mid-frequency bands and/or high-frequency bands.

The low-pass sub-circuit 1123 is used to pass a low-frequency band. Therefore, when the switching sub-circuit 1121 electrically connects the low-pass sub-circuit 1123 to the first antenna radiator 111, the first antenna component 110 Supports the first low frequency band. The low-pass sub-circuit 1123 may include, but is not limited to, a 0-ohm component or a small inductor. When the foldable body 20 is in the unfolded state, the switching sub-circuit 1121 switches the low-pass sub-circuit 1123 to the first antenna radiator 111 .

In addition, the first switching circuit SW1 also includes a first regulating sub-circuit 1124. The first adjustment sub-circuit 1124 is electrically connected to the filter sub-circuit 1122 and is used to adjust the equivalent electrical length of the first antenna radiator 111 of the first antenna component 110 so that the first antenna component 110 When the folding body 20 is in the folded state, the electrical length required to support the mid-frequency band and/or the high-frequency band is met. The first switching circuit SW2 also includes a second regulating sub-circuit 1125. The second adjustment sub-circuit 1125 is electrically connected to the low-pass sub-circuit 1123 for adjusting the equivalent electrical length of the first antenna radiator 111 of the first antenna component 110 so that the first antenna component 110 meets the electrical length required to support the first low frequency band when the foldable body 20 is in the unfolded state. It should be noted that if the equivalent electrical length of the first antenna radiator 111 meets the requirements of the antenna assembly 110 to support the mid-frequency band and/or the high-frequency band when the foldable body 20 is in the folded state, has an electrical length, then the first switching circuit SW1 may not include the first regulating sub-circuit 1124. If the equivalent electrical length of the first antenna radiator 111 meets the electrical length required by the antenna assembly 110 to support the first low-frequency band when the foldable body 20 is in the unfolded state, then the first switching circuit SW1 may also not include the second regulator sub-circuit 1125 .

In addition, the first switching circuit SW1 also includes a ground sub-circuit 1127. One end of the ground sub-circuit 1127 is grounded, and the other end is electrically connected to the switching sub-circuit 1121. When the foldable body 20 is in the folded state and the first antenna radiator 111 is disconnected from the first feed source S1 through the first switching circuit SW1, the switching sub-circuit 1121 passes through the first switching circuit SW1. The ground subcircuit 1127 is grounded. The ground subcircuit 1127 may be, but is not limited to, a capacitor or an inductor. When the foldable body 20 is in the folded state, the switching sub-circuit 1121 is electrically connected to the ground sub-circuit 1127 so that the first antenna radiator 111 is disconnected from the first feed source S1.

The first antenna radiator 111 has a first ground end 111a and a first free end 111b. The first ground terminal 111a and the first free terminal 111b are located on both sides of the first feed point A1. In other words, the first antenna radiator 111 has a first free end 111b, a first feeding point A1 and a first free end 111b arranged in sequence. The first ground terminal 111a is electrically connected to the foldable body 20 to be grounded. The first ground terminal 111a can be electrically connected to the foldable body 20 through conductive connectors (such as connecting ribs, conductive glue, etc.). Specifically, in this embodiment, the first ground terminal 111a is electrically connected to the first body 210 of the foldable body 20 . In this embodiment, the first free end 111b is spaced apart from the first body 210 of the foldable body 20 .

The first antenna radiator 111 may be disposed along the extending direction of the axis L0 of the foldable body 20 . In this embodiment, at least part of the first antenna radiator 111 is disposed along the extending direction of the rotating shaft 230 . For example, part or all of the first antenna radiator 111 is disposed along the extending direction of the rotating shaft 230 . This application takes as an example that the entire first antenna radiator 111 is arranged along the extension direction of the rotation axis 230 (Y-axis direction).

The direction from the first ground end 111a to the first free end 111b is the first direction. In this embodiment, the first direction is the positive Y-axis direction. In other embodiments, the first direction may also be the negative Y-axis direction.

The second antenna component 120 includes a second antenna radiator 121 and a second feed source S2. The second feed source S2 is electrically connected to the second antenna radiator 121 . The second antenna radiator 121 is a port for the second antenna component 120 to receive and receive radio frequency signals, where the radio frequency signals are transmitted in the form of electromagnetic wave signals in the air medium. This application does not specifically limit the shape of the second antenna radiator 121. For example, the shape of the second antenna radiator 121 includes but is not limited to strip shape, sheet shape, rod shape, coating shape, film shape, etc. The second antenna radiator 121 shown in FIG. 3 is only an example and does not limit the shape of the second antenna radiator 121 provided in this application. Optionally, when the frame is made of conductive material, the second antenna radiator 121 can be integrated with the frame, that is, the second antenna radiator 121 is a frame antenna, and a part of the frame 410 serves as the second antenna radiator 121 . Alternatively, the second antenna radiator 121 can also be a part of the middle frame (ie, the foldable main body 20 ), so that the second antenna radiator 121 and the middle frame are interconnected to form an integrated structure. The second antenna radiator 121 may be formed by cutting a slit on the middle frame. In this embodiment, the portion of the frame 410 corresponding to the second antenna radiator 121 can be made of non-conductive material, so that the second antenna radiator 121 can send and receive electromagnetic wave signals through the frame. Optionally, the antenna formed by the second antenna radiator 121 is a bracket antenna. Among them, the bracket antenna includes but is not limited to a flexible circuit board antenna formed on a flexible circuit board (Flexible Printed Circuit board, FPC), a laser direct forming antenna through laser direct structuring (LDS), a direct forming through printing (Print Direct Structuring, PDS) printed direct forming antenna, conductive sheet antenna, etc. Divided in another dimension, the second antenna radiator 121 is a Planar Inverted F-shaped Antenna (PIFA).

Optionally, the material of the second antenna radiator 121 is a conductive material. Specific materials include but are not limited to metals such as copper, gold, and silver, or alloys of copper, gold, and silver, or copper, gold, and silver. Alloys formed with other materials; or other non-metal conductive materials, such as metal oxide conductive materials (such as indium tin oxide, indium tin gallium oxide) and other oxide conductive materials, or carbon nanotubes and polymers to form mixed conductive materials Materials etc.

The second antenna radiator 121 has a second feeding point A2. The second feed source S2 is electrically connected to the second feed point A2. The second feed source S2 includes but is not limited to a radio frequency transceiver chip and a radio frequency front-end circuit. Usually, the second feed source S2 is provided on the motherboard of the electronic device 1 .

The second antenna radiator 121 has a second ground end 121a and a second free end 122b. The second ground terminal 121a and the second free terminal 122b are located on both sides of the second feed point A2. In other words, the second antenna radiator 121 has a second free end 122b, a second feeding point A2 and a second free end 122b arranged in sequence. The second ground terminal 121a is electrically connected to the foldable body 20 to be grounded. The second ground terminal 121a can be electrically connected to the foldable main body 20 through conductive connectors (such as connecting ribs, conductive glue, etc.). Specifically, in this embodiment, the second ground terminal 121a is electrically connected to the second body 220 of the foldable body 20 . In this embodiment, the second free end 122b is spaced apart from the second main body 220 of the foldable main body 20 .

The second antenna radiator 121 may be disposed along the extending direction of the axis L0 of the foldable body 20 . In this embodiment, at least part of the second antenna radiator 121 is disposed along the extending direction of the rotating shaft 230 . For example, part or all of the second antenna radiator 121 is disposed along the extending direction of the rotating shaft 230 . This application takes as an example that the entire second antenna radiator 121 is arranged along the extension direction of the rotation axis 230 (Y-axis direction).

The direction from the second ground end 121a to the second free end 122b is the second direction. The second direction is the same as the first direction. In this embodiment, the first direction and the second direction are the positive Y-axis directions. In other embodiments, the first direction and the second direction may also be the negative Y-axis direction. It should be noted that, depending on the placement position of the electronic device 1, the first direction and the second direction may also be other directions besides the positive Y-axis direction and the negative Y-axis direction, as long as the The first direction and the second direction only need to be the same. It should be noted that the first direction and the second direction are the same, including that the first direction and the second direction are exactly the same (that is, the angle between the first direction and the second direction is 0 °), it may also include that the first direction and the second direction are approximately the same (for example, the angle between the first direction and the second direction ranges from -10° to +10°, or -5° to +5°).

When the first direction and the second direction are the same, the envelope correlation coefficient (ECC) between the first antenna component 110 and the second antenna component 120 is smaller, thus making the The antenna device 10 has good communication performance. The current distribution of the first antenna component 110 , the current distribution of the second antenna component 120 , and the ECC curve between the first antenna component 110 and the second antenna component 120 will be introduced later.

This application does not specifically limit the specific forms of the first antenna radiator 111 of the first antenna component 110 and the second antenna radiator 121 of the second antenna component 120 . The following is an example in which the first antenna radiator 111 of the first antenna component 110 is a planar inverted F antenna, and the second antenna radiator 121 of the second antenna component 120 is a planar inverted F antenna.

When the foldable body 20 is in the unfolded state, the first antenna radiator 111 and the second antenna radiator 121 are respectively located on opposite sides of the foldable body 20 . In this embodiment, the first antenna radiator 111 is located on the right side of the foldable body 20 , and the second antenna radiator 121 is located on the left side of the foldable body 20 . It can be understood that in other embodiments, the first antenna radiator 111 is located on the left side of the foldable body 20 , and the second antenna radiator 121 is located on the right side of the foldable body 20 .

When the foldable body 20 is in the unfolded state, the first antenna component 110 and the second antenna component 120 are used to support a first low frequency band. The so-called low frequency (Low Band, LB) frequency band refers to the frequency band below 1000MHz (excluding 1000MHz). The signal type of this frequency band may be a 4G cellular mobile communication signal or a 5G cellular mobile communication signal. For example, the first low-frequency band is, but is not limited to, the NR N28 (703-788MHz) band or the N5 band or the N8 band, but is not limited to this band. The first low-frequency band is such as the N28 (703-733MHz uplink, 758-788MHz downlink) frequency band. Low-frequency band communication has the advantages of long coverage distance and good stability. For 5G communication systems, it is very important to re-cultivate low-frequency band communications. of.

Of course, in other embodiments, it is not limited to when the foldable body 20 is in the unfolded state, the first antenna component 110 and the second antenna component 120 support the same frequency band, the first antenna component 110 and the The second antenna component 120 can also support different frequency bands respectively to increase the number of frequency bands or bandwidth covered by the antenna device 10 .

When the foldable body 20 is in the unfolded state, both the first antenna component 110 and the second antenna component 120 support the first low-frequency band. Therefore, the antenna device 10 has better communication effect.

It should be noted that the mid-frequency band (MB) refers to the frequency band ranging from 1700MHz to 2170MHz (ie, 1.7GHz to 2.17GHz), and the high-frequency band refers to 2300MHz to 2690MHz (ie, 2.3GHz to 2.69MHz). GHz) frequency band. When the first antenna component 110 supports the mid-frequency band and the high-frequency band, that is, the first antenna component 110 supports the mid-high frequency band (MHB)

For the first antenna component 110 and the second antenna component 120 , when the foldable body 20 is in the unfolded state, the first antenna component 110 and the second antenna component 120 are relatively far apart, and the first antenna component 110 is separated from the second antenna component 120 by a relatively long distance. The physical distance between the two antenna components 120 makes the isolation between the first antenna component 110 and the second antenna component 120 relatively high, and the mutual interference between the first antenna component 110 and the second antenna component 120 is relatively small. However, when the foldable body 20 is in the folded state, the first antenna radiator 111 of the first antenna assembly 110 and the second antenna radiator 121 of the second antenna assembly 120 are disposed on the same side of the foldable body 20. At this time, The physical distance between the first antenna radiator 111 of the first antenna component 110 and the second antenna radiator 121 of the second antenna component 120 is small, especially when both the first antenna component 110 and the second antenna component 120 are When supporting but not limited to supporting antennas including low frequency bands, the first antenna radiator 111 of the first antenna component 110 and the second antenna radiator 121 of the second antenna component 120 are both longer, then the first antenna component 110 The first antenna radiator 111 and the second antenna radiator 121 of the second antenna assembly 120 will be in a state of extremely small distance or even contact to a certain extent. This will lead to a gap between the first antenna assembly 110 and the second antenna assembly 120. The isolation is poor, which affects the antenna radiation efficiency of the first antenna component 110 and the second antenna component 120 .

When the foldable body 20 is in the folded state, the first antenna radiator 111 and the second antenna radiator 121 are located on the same side of the foldable body 20 , therefore, the first antenna radiator 111 The distance to the second antenna radiator 121 is relatively short. If the first antenna component 110 and the second antenna component 120 continue to support the same frequency band when the foldable body 20 is in the folded state, then the first antenna component 110 and the second antenna component The performance of the 120 antenna will decrease, resulting in poorer communication effects. In the electronic device 1 provided in the embodiment of the present application, when the foldable body 20 is in the folded state, the first antenna component 110 no longer supports the first low-frequency band like the second antenna component 120, but the first antenna The component 110 is used to support the medium frequency band and/or the high frequency band, or the first antenna radiator 111 is disconnected from the first feed source S1 through the first switching circuit SW1. When the foldable body 20 is in the folded state, the first antenna component 110 is used to support the mid-frequency band and/or the high-frequency band, that is, the first antenna component 110 and the second antenna component 120 support Different frequency bands, therefore, the first antenna component 110 is small and cannot even have a negative impact on the first low-frequency band where the second antenna component 120 operates, thereby reducing the frequency when the foldable body 20 is in the folded state. The small distance between the first antenna component 110 and the second antenna component 120 leads to a problem of low isolation. It can be seen that the electronic device 1 provided by the embodiment of the present application still has good communication performance when the foldable main body 20 is in the folded state.

Please refer to FIGS. 7 and 8 together. FIG. 7 is a top view of the foldable main body and the antenna device in an unfolded state in an electronic device according to another embodiment of the present application. FIG. 8 is an electronic device according to yet another embodiment of the present application. Top view of the foldable body and antenna device in the unfolded state. In this embodiment, the electronic device 1 includes a foldable main body 20 and an antenna device 10 . The foldable body 20 has an unfolded state and a folded state. The antenna device 10 further includes a first antenna component 110 and a second antenna component 120 provided on the foldable body 20 . Please refer to the previous descriptions of the foldable main body 20 , the first antenna component 110 and the second antenna component 120 and will not be described again here. The antenna device 10 further includes a third antenna component 130 and a fourth antenna component 140 provided on the foldable body 20 . When the foldable body 20 is in the unfolded state, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first Multiple input and output (Multiple Input Multiple Output, MIMO) in the low frequency band. When the foldable body 20 is in the folded state, the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first low frequency band and the second low frequency band. Carrier Aggregation (CA) or dual connection of 4G network and 5G network (LTE NR Double Connect, ENDC).

In this embodiment, the first antenna radiator 111 also has a first matching circuit M1. The first matching circuit M1 is electrically connected to the first feed source S1 and the first switching circuit SW1. The first matching circuit M1 is an impedance matching circuit. Specifically, the first matching circuit M1 is used to match the input impedance of the first feed source S1 and the output impedance of the first antenna radiator 111, so that the The input impedance of the first feed source S1 matches the output impedance of the first antenna radiator 111 . The first matching circuit M1 includes, but is not limited to, a capacitor, an inductor, a capacitor-inductor combination, a switching tuning device, and the like. Usually, the first matching circuit M1 is disposed on the motherboard of the electronic device 1 .

In this embodiment, the second antenna radiator 121 also has a second matching circuit M2. One end of the second matching circuit M2 is electrically connected to the second feed point A2, and the other end of the second matching circuit M2 is electrically connected to the second feed source S2. The electrical connection method of the second matching circuit M2 to the second feed point A2 includes but is not limited to direct welding, or indirect electrical connection through coaxial lines, microstrip lines, conductive elastic sheets, conductive glue, etc. In this embodiment, the second matching circuit M2 is electrically connected to the second feed point A2 through a conductive member (such as a conductive elastic piece).

The second matching circuit M2 is an impedance matching circuit. Specifically, the second matching circuit M2 is used to match the input impedance of the second feed source S2 and the output impedance of the second antenna radiator 121, so that the The input impedance of the second feed source S2 matches the output impedance of the second antenna radiator 121 . The second matching circuit M2 includes, but is not limited to, a capacitor, an inductor, a capacitor-inductor combination, a switching tuning device, and the like. Usually, the second matching circuit M2 is disposed on the motherboard of the electronic device 1 .

It can be understood that in the schematic diagram of this embodiment, the second antenna component 120 further includes a second switching circuit SW2 as an example. It can be understood that if the second antenna component 120 supports the first low-frequency band but does not support other frequency bands, the second antenna component 120 may not include the second switching circuit SW2. When the second antenna component 120 supports the first low frequency band and can also support the second low frequency band, then the second antenna component 120 further includes the second switching circuit SW2.

The third antenna component 130 includes a third antenna radiator 131, a second switching circuit SW3 and a third feed source S3. The third feed source S3 is electrically connected to the third antenna radiator 131 through the second switching circuit SW3. The third antenna radiator 131 is a port through which the third antenna component 130 receives and receives radio frequency signals, where the radio frequency signals are transmitted in the form of electromagnetic wave signals in the air medium. This application does not specifically limit the shape of the third antenna radiator 131. For example, the shape of the third antenna radiator 131 includes but is not limited to strip shape, sheet shape, rod shape, coating shape, film shape, etc. The third antenna radiator 131 shown in the schematic diagram of this embodiment is only an example, and does not limit the shape of the third antenna radiator 131 provided in this application. Optionally, when the frame is made of conductive material, the third antenna radiator 131 can be integrated with the frame 410 , that is, the third antenna radiator 131 is a frame antenna, and a part of the frame serves as the third antenna radiator 131 . Alternatively, the third antenna radiator 131 can also be a part of the middle frame (that is, the foldable main body 20 ). In this way, the third antenna radiator 131 and the middle frame are interconnected to form an integrated structure. The third antenna radiator 131 may be formed by cutting a slit on the middle frame. In this embodiment, the frame portion corresponding to the third antenna radiator 131 can be made of non-conductive material, so that the third antenna radiator 131 can transmit and receive electromagnetic wave signals through the frame 410 . Optionally, the antenna formed by the third antenna radiator 131 is a bracket antenna. Among them, the bracket antenna includes but is not limited to a flexible circuit board antenna formed on a flexible circuit board (Flexible Printed Circuit board, FPC), a laser direct forming antenna through laser direct structuring (LDS), a direct forming through printing (Print Direct Structuring, PDS) printed direct forming antenna, conductive sheet antenna, etc. In another dimension, the third antenna radiator 131 is a Planar Inverted F-shaped Antenna (IPF) antenna.

Optionally, the material of the third antenna radiator 131 is a conductive material. Specific materials include but are not limited to metals such as copper, gold, and silver, or alloys of copper, gold, and silver, or copper, gold, and silver. Alloys formed with other materials; or other non-metal conductive materials, such as metal oxide conductive materials (such as indium tin oxide, indium tin gallium oxide) and other oxide conductive materials, or carbon nanotubes and polymers to form mixed conductive materials Materials etc.

The third antenna radiator 131 has a third feeding point A3. The third feed source S3 is electrically connected to the third feed point A3 through the second switching circuit SW3. In this embodiment, the second switching circuit SW3 is electrically connected to the third feeding point A3 of the third antenna radiator 131 . The third feed source S3 includes but is not limited to a radio frequency transceiver chip and a radio frequency front-end circuit. Usually, the third feed source S3 is provided on the motherboard of the electronic device 1 .

The third antenna radiator 131 is electrically connected to the third feed source S3 through the second switching circuit SW3. Therefore, the second switching circuit SW3 can control the third feed source S3 to be electrically connected to the third feed source S3. The antenna radiator 131 is provided, and the second switching circuit SW3 can also control the connection between the third feed source S3 and the third antenna radiator 131 .

The third antenna radiator 131 has a third ground end 131a and a third free end 131b. The third ground terminal 131a and the third free terminal 131b are located on both sides of the third feed point A3. In other words, the third antenna radiator 131 has a third free end 131b, a third feeding point A3 and a third free end 131b arranged in sequence. The third ground terminal 131a is electrically connected to the foldable body 20 to be grounded. The third ground terminal 131a can be electrically connected to the foldable body 20 through conductive connectors (such as connecting ribs, conductive glue, etc.). Specifically, in this embodiment, the third ground terminal 131a is electrically connected to the third body of the foldable body 20 . In this embodiment, the third free end 131b is spaced apart from the third body of the foldable body 20 .

The third antenna radiator 131 may be disposed in a direction perpendicular to the extension direction of the axis L0 of the foldable body 20 . This application takes as an example that the entire third antenna radiator 131 is arranged in a direction (X direction) perpendicular to the extension direction (Y-axis direction) of the rotation axis 230.

The direction from the third ground end 131a to the third free end 131b is the third direction. In this embodiment, the third direction is the negative direction of the X-axis. In other embodiments, the third direction may also be the positive direction of the X-axis.

In this embodiment, the third antenna radiator 131 also has a third matching circuit M3. One end of the third matching circuit M3 is electrically connected to the third feed point A3, and the other end of the third matching circuit M3 is electrically connected to the third feed source S3. The electrical connection method of the third matching circuit M3 to the third feed point A3 includes but is not limited to direct welding, or indirect electrical connection through coaxial lines, microstrip lines, conductive elastic sheets, conductive glue, etc. In this embodiment, the third matching circuit M3 is electrically connected to the third feed point A3 through a conductive member (such as a conductive spring piece).

The third matching circuit M3 is an impedance matching circuit. Specifically, the third matching circuit M3 is used to match the input impedance of the third feed source S3 and the output impedance of the third antenna radiator 131, so that the The input impedance of the third feed source S3 matches the output impedance of the third antenna radiator 131 . The third matching circuit M3 includes, but is not limited to, a capacitor, an inductor, a capacitor-inductor combination, a switching tuning device, and the like. Usually, the third matching circuit M3 is disposed on the motherboard of the electronic device 1 .

It can be understood that in the schematic diagram of this embodiment, the third antenna component 130 further includes the second switching circuit SW3 as an example. It can be understood that if the third antenna component 130 supports the first low frequency band but does not support other frequency bands, the third antenna component 130 may not include the second switching circuit SW3. When the third antenna component 130 supports the first low frequency band and can also support the second low frequency band, then the third antenna component 130 further includes the second switching circuit SW3.

Optionally, the material of the fourth antenna radiator 141 is a conductive material. Specific materials include but are not limited to metals such as copper, gold, and silver, or alloys of copper, gold, and silver, or copper, gold, and silver. Alloys formed with other materials; or other non-metal conductive materials, such as metal oxide conductive materials (such as indium tin oxide, indium tin gallium oxide) and other oxide conductive materials, or carbon nanotubes and polymers to form mixed conductive materials Materials etc.

The fourth antenna radiator 141 has a fourth feeding point A4. The fourth feed source S4 is electrically connected to the fourth feed point A4. Wherein, the fourth feed source S4 includes but is not limited to a radio frequency transceiver chip and a radio frequency front-end circuit. Usually, the fourth feed source S4 is provided on the motherboard of the electronic device 1 .

The fourth antenna radiator 141 has a fourth ground end 141a and a fourth free end 141b. The fourth ground terminal 141a and the fourth free terminal 141b are located on both sides of the fourth feed point A4. In other words, the fourth antenna radiator 141 has a fourth free end 141b, a fourth feeding point A4 and a fourth free end 141b arranged in sequence. The fourth ground terminal 141a is electrically connected to the foldable body 20 to be grounded. The fourth ground terminal 141a can be electrically connected to the foldable body 20 through conductive connectors (such as connecting ribs, conductive glue, etc.). Specifically, in this embodiment, the fourth ground terminal 141a is electrically connected to the second body 220 of the foldable body 20 . In this embodiment, the fourth free end 141b is spaced apart from the second body 220 of the foldable body 20 .

At least part of the fourth antenna radiator 141 may be disposed in a direction perpendicular to an extension direction of the axis L0 of the foldable body 20 . In this embodiment, at least part of the fourth antenna radiator 141 is disposed in a direction perpendicular to the extension direction of the rotating shaft 230 . For example, part or all of the fourth antenna radiator 141 is disposed in a direction perpendicular to the extension direction of the rotation axis 230 . In this application, part of the fourth antenna radiator 141 is arranged along the direction (X-axis direction) perpendicular to the extension direction (Y-axis direction) of the rotation axis 230, and other parts of the fourth antenna radiator 141 are arranged along the axis. The L0 extension direction (Y-axis direction) is taken as an example to illustrate.

In FIG. 8 , the entire fourth antenna radiator 141 is disposed along a direction perpendicular to the axis L0.

The direction from the fourth ground end 141a to the fourth free end 141b is the fourth direction. The fourth direction is opposite to the third direction. In this embodiment, the third direction is the negative direction of the X-axis, and correspondingly, the fourth direction is the positive direction of the X-axis. In other embodiments, the third direction may also be the positive direction of the X-axis, and correspondingly, the fourth direction may be the negative direction of the X-axis. It should be noted that the third direction being opposite to the fourth direction includes the third direction being completely opposite to the fourth direction (that is, the angle between the first direction and the fourth direction is 180°. ), may also include that the third direction is approximately opposite to the fourth direction (for example, the range of the angle between the third direction and the fourth direction is 180°±10°, or 180° ±5°).

When the third direction is opposite to the fourth direction, it can ensure that the ECC between the third antenna component 130 and the fourth antenna component 140 is small. The third antenna component 130 and the fourth antenna component will be combined later. The current diagram and ECC curve of the antenna component are analyzed.

In this embodiment, the fourth antenna radiator 141 further has a fourth matching circuit M4. One end of the fourth matching circuit M4 is electrically connected to the fourth feed point A4, and the other end of the fourth matching circuit M4 is electrically connected to the fourth feed source S4. The fourth matching circuit M4 is electrically connected to the fourth feed point A4 in an electrical connection manner including but not limited to direct welding, or indirect electrical connection through coaxial lines, microstrip lines, conductive elastic sheets, conductive glue, etc. In this embodiment, the fourth matching circuit M4 is electrically connected to the fourth feed point A4 through a conductive member (such as a conductive elastic piece).

The fourth matching circuit M4 is an impedance matching circuit. Specifically, the fourth matching circuit M4 is used to match the input impedance of the fourth feed source S4 and the output impedance of the fourth antenna radiator 141, so that the The input impedance of the fourth feed source S4 matches the output impedance of the fourth antenna radiator 141 . The fourth matching circuit M4 includes, but is not limited to, capacitors, inductors, capacitor-inductor combinations, switching tuning devices, and the like. Usually, the fourth matching circuit M4 is disposed on the motherboard of the electronic device 1 . This application does not specifically limit the specific forms of the third antenna radiator 131 of the third antenna component 130 and the fourth antenna radiator 141 of the fourth antenna component 140. The following is an example in which the third antenna radiator 131 of the third antenna component 130 is a planar inverted F antenna, and the fourth antenna radiator 141 of the fourth antenna component 140 is a planar inverted F antenna.

It can be understood that in the schematic diagram of this embodiment, the fourth antenna component 140 further includes a second switching circuit SW4 as an example. It can be understood that if the fourth antenna component 140 supports the first low frequency band but does not support other frequency bands, the fourth antenna component 140 may not include the second switching circuit SW4. When the fourth antenna component 140 supports the first low frequency band and can also support the second low frequency band, then the fourth antenna component 140 further includes the second switching circuit SW4.

As the Internet speed requirements for the electronic device 1 increase, the throughput requirements for data transmission increase. Multiple Input Multiple Output (MIMO) systems have great advantages in increasing data rates. This system uses one or more transmitting antennas and multiple receiving antennas at the transmitting end and receiving end of the wireless communication system, respectively. The signal is transmitted and received through multiple antennas at the transmitter and receiver, creating multiple parallel spatial channels. Multiple information flows through or multiple channels are transmitted simultaneously in the same frequency band, thereby increasing system capacity. The MIMO system can make full use of space resources and achieve multiple transmissions and multiple receptions through multiple antennas. Without increasing spectrum resources and antenna transmission power, the MIMO system can increase the spatial dimension by using multiple antennas to achieve multi-dimensional signal processing, and obtain spatial diversity gain or Spatial multiplexing gain can exponentially increase system channel capacity.

Since the MIMO system improves signal capacity by sending parallel spatially independent data streams, the MIMO system requires low mutual coupling performance between antennas. Envelope correlation coefficient (ECC) is a quantitative index that reflects the spatial correlation between antennas and can be used to evaluate the independence of antennas in radiation patterns and polarization in MIMO systems. The smaller the envelope correlation coefficient, the smaller the correlation between antennas, the higher the diversity gain of the MIMO system, and the better the communication performance of the MIMO system.

When the foldable body 20 is in the unfolded state, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first MIMO in the low-frequency band to increase the transmission throughput and data transmission rate of the first low-frequency band.

When the foldable body 20 is in the folded state, the distance between the first antenna component 110 and the second antenna component 120 is small, and the first antenna component 110 and the second antenna component 120 are not support the same first low frequency band; instead, when the foldable body 20 is in the folded state, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 are used to support all Carrier Aggregation (CA) of the first low-frequency band and the second low-frequency band or dual connection (LTE NR Double Connect, ENDC) of the 4G network and the 5G network, so that the antenna device 10 can still have better communication performance, and can meet the L+L application requirements of European operators.

When the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first low frequency band and the second low frequency band which are CA, the antenna device 10 may have a larger bandwidth, therefore, the antenna device 10 has better communication performance.

When the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first low frequency band and the second low frequency band ENDC, dual operation of the 4G network and the 5G network can be achieved. connection, therefore, the antenna device 10 has better performance.

When the foldable body 20 is in the folded state, the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first low frequency band and the second low frequency band. The specific situation of CA or ENDC is described in detail later.

In order to obtain better communication performance of the MIMO system, the MIMO system requires that the spacing between antenna components be above half a wavelength. When the MIMO system is applied to low-frequency antennas, the MIMO system has certain requirements for the spacing between low-frequency antennas. However, with the development of miniaturization of electronic device 1, the space on electronic device 1 is extremely limited. How to improve the poor correlation between the antenna components of the MIMO system on foldable electronic device 1 and improve the communication performance of the MIMO system is urgently needed. solve.

The electronic device 1 provided by the present application can improve the problem of the isolation between the antenna components being reduced due to the reduced spacing of the antenna components in the folded state on the foldable electronic device 1, and can also improve the MIMO system. The poor correlation between the antenna components improves the communication performance of the MIMO system and enables the antenna device 10 to support a low-frequency MIMO system. Later, description will be given in conjunction with each antenna component in the antenna device 10 of the electronic device 1 .

Please continue to refer to FIG. 7 . The foldable main body 20 includes a first corner part 210a, a second corner part 220a, a third corner part 210b and a fourth corner part 220b. When the foldable body 20 is in a flattened state, the first corner portion 210a and the second corner portion 220a are disposed diagonally, and the third corner portion 210b and the fourth corner portion 220b are disposed diagonally. The first corner part 210a and the third corner part 210b are located on the same side of the axis L0 of the foldable body 20, and the second corner part 220a and the fourth corner part 220b are located on the foldable body 20 on the same side of the axis L0. The first antenna radiator 111 is located between the first corner portion 210a and the third corner portion 210b, and the first direction is parallel to the axis L0; the second antenna radiator 121 is located between the first corner portion 210a and the third corner portion 210b. Between the second corner portion 220a and the fourth corner portion 220b, the second direction is parallel to the axis L0.

In this embodiment, the first body 210 includes a first side 211, and a second side 212 and a third side 213 connected to opposite sides of the first side 211. The first side 211 is the side of the first body 210 that is away from the axis L0 of the foldable body 20 . In this embodiment, the first side 211 is parallel or approximately parallel to the axis L0 of the foldable body 20 . The second side 212 and the third side 213 are arranged opposite each other, and both are bent and connected to the first side 211. In this embodiment, the second side 212 is perpendicular or approximately perpendicular to the axis L0 of the foldable body 20 . In this embodiment, the third side 213 is perpendicular or approximately perpendicular to the foldable body 20 . The connection between the first side 211 and the second side 212 is defined as a first corner 210a, and the connection between the first side 211 and the third side 213 is defined as a third corner. 210b. The first antenna radiator 111 is disposed corresponding to the first side 211 and is spaced apart from the first side 211 .

The second body 220 includes a fourth side 221 , and a fifth side 222 and a sixth side 223 connected to opposite sides of the fourth side 221 . The fourth side 221 is the side of the second body 220 that is away from the axis L0 of the foldable body 20 . In this embodiment, the fourth side 221 is parallel or approximately parallel to the axis L0 of the foldable body 20 . The fifth side 222 and the sixth side 223 are arranged opposite each other, and both are bent and connected to the fourth side 221 . In this embodiment, the fifth side 222 is perpendicular or approximately perpendicular to the axis L0 of the foldable body 20 . In this embodiment, the sixth side 223 is perpendicular or approximately perpendicular to the axis L0 of the foldable body 20 . In this embodiment, the connection between the fourth side 221 and the fifth side 222 is defined as the second corner portion 220a, and the connection between the fourth side 221 and the sixth side 223 is defined as the fourth corner 220a. Corner portion 220b. The second antenna radiator 121 is disposed corresponding to the fourth side 221 and is spaced apart from the fourth side 221 .

In this embodiment, when the foldable body 20 is in the unfolded state, the first body 210 is located on the left side of the axis L0 of the foldable body 20 , and the second body 220 is located on the left side of the axis L0 of the foldable body 20 . 20, the first side 211 is the right side of the first body 210, the second side 212 is the bottom side of the foldable body 20, and the third side 213 is The top side of the foldable main body 20; the fourth side 221 is the left side of the second main body 220, the fifth side 222 is the top side of the second main body 220, and the sixth side 223 is The bottom edge of the second body 220 . Correspondingly, when the foldable body 20 is in the unfolded state, the first corner portion 210a is located at the lower right corner of the foldable body 20 and the second corner portion 220a is located at the upper left corner of the foldable body 20 , the third corner portion 210b is located at the upper right corner of the foldable body 20 , and the fourth corner portion 220b is located at the lower left corner of the foldable body 20 . It can be understood that as the foldable body 20 is placed in different positions, the first side 211 , the second side 212 , the third side 213 , the fourth side 221 , the fifth side The orientations of the side 222 and the sixth side 223 will also change accordingly. Correspondingly, the orientations of the first corner portion 210a, the second corner portion 220a, the third corner portion 210b and the fourth corner portion 220b will also change accordingly.

The first antenna radiator 111 is disposed corresponding to the first side 211, and the first antenna radiator 111 is located between the first corner portion 210a and the third corner portion 210b. The first direction is parallel to the axis L0, including but not limited to the first direction being completely parallel to the axis L0, or approximately parallel. When the first direction is completely parallel to the axis L0, the angle between the first direction and the axis L0 is 0°; when the first direction is approximately parallel to the axis L0, the angle between the first direction and the axis L0 is 0°. The angle range between the first direction and the axis L0 may be -10° to +10°, or -5° to +5°.

The second antenna radiator 121 is disposed corresponding to the second side 212, and the second antenna radiator 121 is located between the second corner portion 220a and the fourth corner portion 220b. The second direction is parallel to the axis L0, including but not limited to the second direction being completely parallel to the axis L0, or approximately parallel. When the second direction is completely parallel to the axis L0, the angle between the second direction and the axis L0 is 0°; when the second direction is approximately parallel to the axis L0, the angle between the second direction and the axis L0 is 0°. The angle range between the second direction and the axis L0 may be -10° to +10°, or -5° to +5°.

The first free end 111b is disposed adjacent to the third corner portion 210b compared to the first ground end 111a; the second free end 122b is adjacent to the second corner compared to the second ground end 121a. Part 220a is set.

In this embodiment, the first free end 111b is closer to the third corner portion 210b than the first ground end 111a. Therefore, the first ground end 111a is closer than the first free end 111b. Corresponding to the middle part of the first side 211 , the first ground terminal 111 a is connected to the ground point of the first main body 210 of the foldable main body 20 closer to the middle part of the first side 211 . The first free end 111b is disposed closer to the third corner portion 210b than the first ground end 111a. When the user uses the electronic device 1, the first free end 111b is closer to the electronic device. 1, it is not easy for the user to hold near the first free end 111b, thereby reducing or avoiding the degradation of the antenna performance of the first antenna assembly 110 caused by the user holding near the first free end 111b. . It can be seen that the first free end 111b is arranged closer to the third corner portion 210b than the first ground end 111a, which can ensure that the first antenna component 110 has better antenna performance.

In this embodiment, the second free end 122b is disposed closer to the second corner than the second ground end 121a. Therefore, the second ground end 121a is located closer to the second free end 122b than the second ground end 121a. The first ground terminal 111 a is connected to the ground point of the foldable body 20 closer to the middle of the fourth side 221 . The second free end 122b is closer to the fourth corner portion 220b than the second ground end 121a. When the user uses the electronic device 1, the second free end 122b is closer to the top of the electronic device 1. The user It is not easy to hold near the second free end 122b, thereby reducing or even avoiding the degradation of the second antenna performance caused by the user holding near the second free end 122b. It can be seen that the second free end 122b is arranged closer to the second corner portion 220a than the second ground end 121a, which can ensure that the second antenna assembly 120 has better antenna performance.

When the foldable body 20 is in the folded state, the first antenna radiator 111 is disconnected from the first feed source S1 through the first switching circuit SW1, and the first antenna radiator 111 is connected to the first feed source S1. The second antenna radiator 121 is coupled.

When the foldable body 20 is in the folded state, the first antenna radiator 111 is not only disconnected from the first feed source S1 through the first switching circuit SW1, but also the first antenna radiator 111 is disconnected from the first feed source S1 through the first switching circuit SW1. 111 is coupled with the second antenna radiator 121 . In other words, the first antenna radiator 111 and the second antenna radiator 121 are coupled as parasitic branches of the second antenna component 120 . When the first antenna radiator 111 and the second antenna radiator 121 are coupled and serve as parasitic branches of the second antenna component 120, the relationship between the first antenna radiator 111 and the second antenna radiator 121 is The sum of equivalent electrical lengths is different from the equivalent electrical length of the second antenna radiator 121. Therefore, the second antenna assembly 120 in this embodiment can support more frequency bands.

Please refer to FIG. 9 , which is a circuit block diagram of an electronic device according to an embodiment of the present application. The electronic device 1 also includes a detector 50 and a controller 60 . The detector 50 is used to detect the state of the foldable body 20 to obtain a detection signal, where the state of the foldable body 20 includes a folded state and an unfolded state. The controller 60 is electrically connected to the detector 50 and the first switching circuit SW1. The controller 60 is used to determine whether the foldable body 20 is in a folded state according to the detection signal, and determines whether the foldable body 20 is in a folded state. When the foldable body 20 is in the folded state, a control signal is generated, and the control signal is used for the first switching circuit SW1. Specifically, when it is determined that the foldable body 20 is in the folded state, the control signal controls the first antenna component 110 to support the mid-frequency band and/or the high-frequency band, or controls the first switching circuit SW1 to The first antenna radiator 111 is disconnected from the first feed source S1 through the first switching circuit SW1.

The detector 50 is used to detect the state of the foldable body 20 , where the detector 50 includes but is not limited to an angle sensor, a distance sensor, etc. and is capable of detecting the angle change or distance between the first body 210 and the second body 220 . Change sensor.

The controller 60 determines whether the state of the foldable body 20 is a folded state or an unfolded state according to the detection signal. For example, when the controller 60 determines based on the detection signal that the angle between the first body 210 and the second body 220 of the foldable body 20 is 180° or about 180° (for example, 180°±10°) , the controller 60 determines that the first body 210 and the second body 220 are in the unfolded state. When the angle between the first body 210 and the second body 220 is 0° or less than 10° (not limited to this angle), the controller 60 determines that the first body 210 and the second body 220 of the foldable body 20 are in a folded state. .

The envelope correlation coefficient reflects the cross-correlation of the main and secondary antenna reception patterns in the three-dimensional space. In receive diversity and MIMO reception, it is generally expected that the radiation performance of the main and secondary antennas can complement each other, and that the radiation patterns of the two antennas have a relatively large difference. There is no similarity between the main and auxiliary antenna patterns. At this time, the reception can achieve the ideal and best effect. This application is based on two factors: the orthogonal principle of the far-field pattern polarization of the antenna components and the different main radiation directions, to obtain good ECC characteristics (that is, the ECC is small) between each other.

This application analyzes the current distribution, far-field pattern and ECC curve of the first antenna component 110 and the second antenna component 120 when the foldable body 20 is in the unfolded state.

Please refer to Figures 10 and 11 together. Figure 10 is a schematic diagram of the current distribution when the foldable body is in the unfolded state and the first antenna component is working. Figure 11 is a schematic diagram of the current distribution when the foldable body is in the unfolded state and the second antenna is working. When the first antenna component 110 serves as a receiving antenna, the current distribution on the first antenna radiator 111 is: the current distribution on the first antenna radiator 111 flows from the first free end 111b to the first ground. End 111a. The current on the first antenna radiator 111 is represented by a dotted arrow in the schematic diagram. The first antenna radiator 111 is electrically connected to a reference ground (the foldable body 20 ), and excites a first longitudinal current I ₁₁ along the first side 211 and a third longitudinal current I 11 along the third side 213 on the reference ground. A transverse current I ₁₂ . In this embodiment, both the transverse direction and the longitudinal direction are based on the angle of view in this schematic diagram. The transverse direction is a direction perpendicular to the axis L0 or a direction approximately perpendicular to the axis L0. The longitudinal direction is parallel to the axis L0. The direction is or is approximately parallel to the axis L0. Wherein, the direction of the first longitudinal current is opposite to that of the current on the first antenna radiator 111, and the direction of the first transverse current _I12 is from the end connecting the third side 213 to the first side 211. The third side 213 is close to one end of the axis L0. The direction of the solid arrow is the direction of the equivalent current (first current I ₀₁ ). The direction of the first current I ₀₁ is from the third corner portion 210 b to the fourth corner portion 220 b. It can be understood that the above-mentioned current has periodicity, so the direction of the current is not limited to the above-mentioned direction, and can also be reversed.

Please continue to refer to FIG. 11. When the second antenna assembly 120 is used as a receiving antenna, the current on the second antenna radiator 121 may be, and the current on the second antenna radiator 121 flows from the second ground terminal 121a to The second free end 122b. The current on the second antenna radiator 121 is represented by a dotted arrow. The second antenna radiator 121 is electrically connected to a reference ground (foldable body 20), and excites a second longitudinal current I ₂₁ and a second transverse current I ₂₂ on the reference ground. In this embodiment, both the transverse direction and the longitudinal direction are based on the angle of view in this schematic diagram. The transverse direction is a direction perpendicular to the axis L0 or a direction approximately perpendicular to the axis L0. The longitudinal direction is parallel to the axis L0. The direction is or is approximately parallel to the axis L0. The second longitudinal current I ₂₁ is along the fourth side 221 and is opposite to the current on the second antenna radiator 121 . The second transverse current I ₂₂ flows along the fifth side 222 and the third side 213 , and along one end of the third side 213 away from the axis L0 to the fifth side 222 away from the axis L0 . One end of axis L0. The direction of the solid arrow is the direction of the equivalent current (second current I ₀₂ ). The direction of the second current _I02 is from the first corner portion 210a to the second corner portion 220a. It can be understood that the above-mentioned current has periodicity, so the direction of the current is not limited to the above-mentioned direction, and can also be the opposite direction. Towards. It can be seen that in this embodiment, the first current I ₀₁ and the second current I ₀₂ are orthogonal. In other embodiments, the first current I ₀₁ and the second current I ₀₂ may also intersect at non-orthogonal angles.

Please refer to Figure 12, Figure 13 and Figure 14. Figure 12 is the far-field pattern of the first antenna component when the foldable body is in the unfolded state; Figure 13 is the far-field pattern of the second antenna component when the foldable body is in the unfolded state. ; Figure 14 is a schematic diagram of the ECC curves of the first antenna assembly and the second antenna assembly when the foldable body is in the unfolded state. In the schematic diagram of this embodiment, the horizontal axis is frequency, the unit is GHz, and the vertical axis is ECC. The curve in the figure is the ECC curve of the first antenna component 110 and the second antenna component 120 . It can be seen from FIGS. 12 and 13 that the line connecting the two zero points of the first antenna component 110 in FIG. 12 is orthogonal to the line connecting the two zero points of the second antenna component 120 in FIG. 13 . Among them, the electric field zero point can indicate the far-field electric field polarization direction of the antenna assembly. Fixed, the far-field electric field polarization direction of the first antenna component 110 is diagonally downward to the right, and the far-field electric field polarization direction of the second antenna component 120 is diagonally downward left. The far-field electric field polarization direction of the first antenna component 110 and the far-field electric field polarization direction of the second antenna component 120 are orthogonal to realize the first antenna component 110 and the second antenna component The envelope correlation coefficient of 120 is low. Of course, in other embodiments, the far-field electric field polarization direction of the first antenna component 110 and the far-field electric field polarization direction of the second antenna component 120 may also intersect at non-orthogonal angles to realize the first antenna component 110 The envelope correlation coefficient with the second antenna component 120 is low. As can be seen from the ECC curve in Figure 14, the ECC index is extremely small, about 0.023, and the ECC characteristics are excellent.

In addition, the main radiation directions of the first antenna component 110 and the second antenna component 120 are different, which will also help to reduce the ECC characteristics. Since the main radiation direction of the antenna component is distributed in the direction of current lag, and since the current lag directions of the first antenna component 110 and the second antenna component 120 are different, the first antenna component 110 and the second antenna component 120 have different current lag directions. The main radiation directions of the antenna components 120 are different.

In summary, the far-field polarization directions of the first antenna component 110 and the second antenna component 120 are intersecting or orthogonal when the foldable body 20 is in the unfolded state.

When the foldable body 20 is in the unfolded state, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the The details of MIMO in the first low-frequency band are introduced.

It should be noted that the MIMO provided in the embodiment of this application means that there are one or more channels of transmission and multiple channels of reception. For example, it is 1-channel transmitter and 4-channel receiver (1T4R), or 2-channel transmitter and 4-channel receiver (2T4R), or 4-channel transmitter and 4-channel receiver (4T4R), which are described in detail below.

In one embodiment, when the foldable body 20 is in the unfolded state, the first antenna component 110 or the second antenna component 120 is used to transmit the transmission signal of the first low frequency band. The first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to receive the reception signal of the first low frequency band to achieve the first low frequency frequency band MIMO.

In this embodiment, when the foldable body 20 is in the unfolded state, the first antenna component 110 or the second antenna component 120 is used to transmit the transmission signal of the first low-frequency signal. The first antenna The component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 are used to receive the received signal of the first low frequency band. Therefore, the antenna device 10 in the embodiment of the present application is 1T4R can achieve four receiving channels for the first low-frequency signal, thereby increasing system channel capacity without increasing spectrum resources and antenna power.

It can be understood that in another embodiment, when the foldable body 20 is in the unfolded state, the first antenna component 110 and the second antenna component 120 are used to transmit the transmission signal of the first low frequency band. , the first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 are used to receive the received signal of the first low-frequency band to achieve the first MIMO in the low frequency band.

When the foldable body 20 is in the unfolded state, the first antenna component 110 and the second antenna component 120 are used to transmit the transmission signal of the first low-frequency band. The second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to receive the reception signal of the first low-frequency band. Therefore, the antenna device 10 in the embodiment of the present application is 2T4R, which can achieve the above requirements. The received signal of the first low-frequency signal has two transmission channels and four receiving channels, which improves the system channel capacity without increasing spectrum resources and antenna power.

Furthermore, in other embodiments, when the foldable body 20 is in the unfolded state, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component Any two of 140 are used to transmit and receive transmission signals in the first low-frequency band, and the first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 are used to Receive the received signal of the first low frequency band. Therefore, the antenna device 10 can be made to be 2T4R, and the received signal of the first low-frequency signal can have two transmission channels and four receiving channels, thereby improving the system channel capacity without increasing spectrum resources and antenna power. .

In another embodiment, when the foldable body 20 is in the unfolded state, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 The first antenna component 110, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 are used to transmit the transmission signal of the first low frequency band. A received signal in a low-frequency band implements MIMO in the first low-frequency band.

The first antenna component 110 and the second antenna component 120 are used to transmit the transmission signal of the first low frequency band. The first antenna component 110, the second antenna component 120, and the third antenna component 130 and the fourth antenna component 140 are used to receive the reception signal of the first low-frequency band. Therefore, the antenna device 10 in the embodiment of the present application is 4T4R, which can realize four transmissions of the reception signal of the first low-frequency signal. Channels, four receiving channels, improve system channel capacity without increasing spectrum resources and antenna power.

The envelope correlation coefficient reflects the cross-correlation of the main and secondary antenna reception patterns in the three-dimensional space. In receive diversity and MIMO reception, it is generally expected that the radiation performance of the main and secondary antennas can complement each other, and that the radiation patterns of the two antennas have a relatively large difference. There is no similarity between the main and auxiliary antenna patterns. At this time, the reception can achieve the ideal and best effect. The embodiments of the present application are also based on the principle that the main radiation directions of antenna components are different to obtain good ECC characteristics between each other.

The third antenna component 130 includes a third antenna radiator 131 . The third antenna radiator 131 and the first antenna radiator 111 are located on the same side of the axis L0 of the foldable body 20 and are arranged corresponding to different sides of the foldable body 20 . The third antenna radiator 131 has a third ground end 131a and a third free end 131b. The direction from the third ground end 131a to the third free end 131b is the third direction. The fourth antenna includes a fourth antenna radiator 141 . The fourth antenna radiator 141 and the second antenna radiator 121 are located on the same side of the axis L0 of the foldable body 20 and are arranged corresponding to different sides of the foldable body 20 (see Figure 7 ). Or the part of the fourth antenna radiator 141 and the second antenna radiator 121 are arranged corresponding to the same side of the foldable body 20 , and the other part of the fourth antenna radiator 141 corresponds to the second antenna radiator 121 Different side settings of the foldable body 20 (see Figure 8). The fourth antenna radiator 141 has a fourth ground end 141a and a fourth free end 141b. The direction from the fourth ground end 141a to the fourth free end 141b is a fourth direction, wherein the third direction Opposite to the fourth direction.

The third antenna radiator 131 and the first antenna radiator 111 are located on the same side of the axis L0 of the foldable body 20. In this embodiment, the third antenna radiator 131 and the first antenna radiator 111 are located on the same side of the axis L0 of the foldable body 20. The antenna radiators 111 are located on the right side of the axis L0 of the foldable body 20 (viewing angle as shown in the figure), and the third antenna radiator 131 and the first antenna radiator 111 both correspond to the first body 210 set up. The third antenna radiator 131 and the first antenna radiator 111 are arranged corresponding to different sides of the foldable body 20. In this embodiment, the first antenna radiator 111 corresponds to the first side. 211 is provided, and the third antenna radiator 131 is provided corresponding to the third side 213 . The third ground terminal 131a is electrically connected to the foldable body 20 to be grounded. In this embodiment, the third ground terminal 131a is electrically connected to the first body 210 . The third antenna radiator 131 has a third ground end 131a and a third free end 131b. The direction from the third ground end 131a to the third free end 131b is the third direction. In this embodiment, the third direction is the negative direction of the X-axis (viewing angle as shown in this example).

The fourth antenna radiator 141 and the second antenna radiator 121 are located on the same side of the axis L0 of the foldable body 20 . In this embodiment, the fourth antenna radiator 141 and the second antenna radiator 121 are located on the same side of the axis L0 of the foldable body 20 . The antenna radiator 121 is located on the left side of the axis L0 of the foldable body 20 (viewing angle shown in the figure), and the fourth antenna radiator 141 and the second antenna radiator 121 are both arranged corresponding to the second body 220 . The fourth antenna radiator 141 and the second antenna radiator 121 are arranged corresponding to different sides of the foldable body 20 . In this embodiment, the second antenna radiator 121 corresponds to the fourth side. 221 is arranged, the fourth antenna radiator 141 is partially arranged corresponding to the fourth side 221 , and the fourth antenna radiator 141 is partially arranged corresponding to the sixth side 223 .

Referring to FIG. 7 , the fourth antenna radiator 141 is partially disposed corresponding to the second corner portion 220a formed by the fourth side 221 and the sixth side 223 , which can facilitate other components of the electronic device 1 (such as speakers). , headphone jack), etc. are set corresponding to the fourth side 221.

In other embodiments, the second antenna radiator 121 is disposed corresponding to the fourth side 221 , and the fourth antenna radiator 141 is disposed corresponding to the sixth side 223 (see FIG. 8 ). In this embodiment, the fourth direction is the positive direction of the X-axis (viewing angle as shown in the figure).

To sum up, in this embodiment, the third direction is the negative X-axis direction, and the fourth direction is the positive X-axis direction. That is, in this embodiment, the third direction is perpendicular to the axis L0 of the foldable body 20 , and the third free end 131b is closer to the axis L0 than the third ground end 131a; The fourth direction is perpendicular to the axis L0 of the foldable body 20 , and the fourth free end 141 b is adjacent to the axis L0 than the fourth ground end 141 a.

In other embodiments, the third direction is the positive direction of the X-axis, and the fourth direction is the negative direction of the X-axis. That is, the third direction is perpendicular to the axis L0 of the foldable body 20, and the third free end 131b is further away from the axis L0 than the third ground end 131a; the fourth direction is perpendicular to the axis L0 of the foldable body 20. Regarding the axis L0 of the foldable body 20, the fourth free end 141b is further away from the axis L0 than the fourth grounded end 141a. This application does not limit the orientation of the third direction and the fourth direction, as long as the third direction is opposite to the fourth direction. The beneficial effects of the embodiments of the present application will be described later in conjunction with current distribution and main radiation pattern.

Please continue to refer to FIG. 7 and FIG. 8 . The foldable main body 20 includes a first corner part 210a, a second corner part 220a, a third corner part 210b and a fourth corner part 220b. When the foldable body 20 is in the unfolded state, the first corner portion 210a and the second corner portion 220a are arranged diagonally, and the third corner portion 210b and the fourth corner portion 220b are arranged diagonally. is provided, and the first corner part 210a and the third corner part 210b are located on the same side of the axis L0 of the foldable body 20 , and the second corner part 220a and the fourth corner part 220b are located on the opposite side of the foldable body 20 Same side as axis L0. The fourth antenna is located at the fourth corner, the first free end 111b is adjacent to the first corner portion 210a compared to the first ground end 111a, and the third free end 131b is adjacent to the first ground end 111a. The third ground terminal 131a is away from the first corner portion 210a.

In the embodiment of the present application, the first free end 111b is closer to the first corner portion 210a than the first ground end 111a, and the third free end 131b is away from the third ground end 131a. The first corner portion 210a can prevent the opening of the first antenna radiator 111 and the opening of the third antenna radiator 131 from facing the same corner portion (the first corner portion 210a). When the opening of the first antenna radiator 111 and the opening of the third antenna radiator 131 face the same corner part (the first corner part 210a), it will cause the third antenna component 130 and the third The ECC between the four antenna assemblies 140 becomes worse (ie, the ECC is larger).

The current distribution, main radiation direction and ECC curve of the third antenna component 130 and the fourth antenna component 140 when the foldable body 20 is in the unfolded state will be introduced in detail below.

Please refer to Figures 15 and 16 together. Figure 15 is a schematic diagram of the current distribution when the foldable body is in the unfolded state and the third antenna component is working; Figure 16 is a schematic diagram of the current distribution when the foldable body is in the unfolded state and the fourth antenna is working. The current distribution on the third antenna radiator 131 on the third antenna component 130 is: the current distribution on the third antenna radiator 131 flows from the third free end 131b to the third ground end 131a. The current on the third antenna radiator 131 is represented by a dotted line in the schematic diagram. The third antenna radiator 131 is electrically connected to the reference ground (foldable body 20), and excites the third longitudinal current I ₃₁ along the first side 211 and the third longitudinal current I 31 along the third side 213 on the reference ground. The third transverse current I ₃₂ . In this embodiment, both the transverse direction and the longitudinal direction are based on the angle of view in this schematic diagram. The transverse direction is a direction perpendicular to the axis L0 or a direction approximately perpendicular to the axis L0. The longitudinal direction is parallel to the axis L0. The direction is or is approximately parallel to the axis L0. The direction of the third transverse current I ₃₂ is opposite to the direction of the current on the third antenna radiator 131 , and the direction of the third transverse current I ₃₂ is from the third side 213 to the first side 211 The connection point flows in the direction of the third side 213 away from the connection point of the first side 211 . The solid arrow indicates the direction of the equivalent current (the first equivalent current I ₀₃ ). In this embodiment, the direction of the first equivalent current is the negative direction of the X-axis.

The current distribution on the fourth antenna radiator 141 on the fourth antenna component 140 is: the current distribution on the third antenna radiator 131 flows from the fourth free end 141b to the fourth ground end 141a. The current on the fourth antenna radiator 141 is represented by a dotted line in the schematic diagram. The fourth antenna radiator 141 is electrically connected to the reference ground (foldable body 20 ), and the reference ground excites its fourth longitudinal current I ₄₁ along the fourth side 221 and along the fourth side 221 . The fourth transverse current I ₄₂ of the six sides 223 . In this embodiment, both the transverse direction and the longitudinal direction are based on the angle of view in this schematic diagram. The transverse direction is a direction perpendicular to the axis L0 or a direction approximately perpendicular to the axis L0. The longitudinal direction is parallel to the axis L0. The direction is or is approximately parallel to the axis L0. The direction of the fourth transverse current I ₄₂ is opposite to the direction of the transverse current on the fourth antenna radiator 141 .

In other words, the third antenna component 130 excites a first equivalent current I ₀₃ on the foldable body 20 , and the fourth antenna component 140 excites a second equivalent current I 03 on the foldable body 20 . The second equivalent current I ₀₄ has an opposite flow direction to the first equivalent current I ₀₃ , and the flow direction of _the first equivalent current I ₀₃ is perpendicular to the axis of the foldable body 20 L0, the flow direction of the second equivalent current I ₀₄ is perpendicular to the axis L0 of the foldable body 20 .

It can be understood that the radiation pattern of each antenna component is mainly radiated by the metal middle frame (that is, the foldable body 20). The far-field pattern of the antenna is formed by the effective radiation of the current on the metal middle frame, and the main radiation direction is along The current phase lags in the direction of radiation. As can be seen from FIG. 15 , the third lateral current I ₃₂ excited by the third antenna component 130 on the metal middle frame is stronger than the third longitudinal current I 31 , so the third lateral current I ₃₂ mainly affects the third lateral current I ₃₂ . Current in the main radiation direction of the three antenna components 130 . The third transverse current I ₃₂ is along the negative direction of the X-axis, and the phase of the third transverse current will lag in the opposite direction along the X-axis. Therefore, the main radiation direction of the third antenna component 130 is biased toward the negative direction of the X-axis. Correspondingly, it can be seen from FIG _. 16 that the fourth lateral current I 42 excited by the fourth antenna assembly 140 on the metal middle frame is stronger than the fourth longitudinal current I ₄₁ , so the fourth lateral current I ₄₂ is The current mainly affects the main radiation direction of the fourth antenna component 140 . The fourth transverse current I ₄₂ is along the positive direction of the X-axis, and the phase of the fourth transverse current I ₄₂ is delayed in the reverse direction along the X-axis.

Please refer to Figure 17, Figure 18 and Figure 19 together. Figure 17 is the far field pattern of the third antenna component when the foldable body is in the unfolded state; Figure 18 is the far field pattern of the fourth antenna component when the foldable body is in the unfolded state. Directional diagram; Figure 19 is a schematic diagram of the ECC curves of the third antenna assembly and the fourth antenna assembly when the foldable body is in the unfolded state. In the schematic diagram of this embodiment, the horizontal axis is frequency, the unit is GHz, and the vertical axis is ECC. The curve in the figure is the ECC curve of the third antenna component 130 and the fourth antenna component 140 . It can be seen from the above analysis that the main radiation direction of the third antenna component 130 is biased towards the negative direction of the X-axis, and the main radiation direction of the fourth antenna component 140 is biased towards the positive direction of the X-axis. Therefore, when the foldable body 20 When in the unfolded state, the main radiation direction of the third antenna component 130 is opposite to the main radiation direction of the fourth antenna component 140 . In other words, the main radiation directions of the third antenna component 130 and the fourth antenna component 140 are opposite when the foldable body 20 is in the unfolded state.

The electronic device 1 provided in the embodiment of the present application utilizes the large difference in the main radiation directions of the third antenna component 130 and the fourth antenna component 140 to achieve low ECC characteristics, thereby improving the antenna performance of the antenna device 10 . Of course, in other embodiments, the main radiation direction of the third antenna component 130 and the main radiation direction of the fourth antenna component 140 may also intersect, for example, at a relatively large angle (for example, 180°±20 ° range), so that the main radiation direction of the third antenna component 130 is significantly different from the main radiation direction of the fourth antenna component 140, so as to reduce the ECC coefficient.

In this embodiment, the ECC of the third antenna component 130 and the fourth antenna component 140 in the range of 0.758GHz-0.800GHz is about 0.42, which is still small.

In addition to the orthogonal principle of far-field pattern polarization between the first antenna component 110 and the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 have different main radiation directions. The principle of realizing low ECC characteristics is that the far-field electric fields between the third antenna component 130 and the first antenna component 110 also have certain polarization orthogonality (non-codirectional), and the original far-field pattern Also with a certain difference, therefore, the ECC value is also smaller. Correspondingly, there is a certain degree of polarization orthogonality (non-codirectional) between the third antenna component 130 and the second antenna component 120 due to their far-field electric fields, and the original far-field pattern also has a certain difference. properties, therefore, the ECC value is also smaller. The far-field electric fields between the fourth antenna and the first antenna assembly 110 also have a certain degree of polarization orthogonality (non-codirectional), and the original far-field patterns also have certain differences. Therefore, ECC The value is also smaller. The far-field electric fields between the fourth antenna and the second antenna assembly 120 also have certain polarization orthogonality (non-codirectional), and the original far-field patterns also have certain differences. Therefore, ECC The value is also smaller.

Please also refer to Figure 20, which is a schematic diagram of the ECC curves of each antenna assembly when the foldable body is in the unfolded state. In the schematic diagram of this embodiment, the horizontal axis is frequency, the unit is GHz, and the vertical axis is ECC. Curve ① is the ECC curve of the third antenna component 130 and the fourth antenna component 140 . Curve ② is the ECC curve of the third antenna component 130 and the first antenna component 110 . Curve ③ is the ECC curve of the third antenna component 130 and the second antenna component 120 . Curve ④ is the ECC curve of the fourth antenna component 140 and the first antenna component 110 . Curve ⑤ is the ECC curve of the fourth antenna component 140 and the second antenna component 120 . Curve ⑥ is the ECC curve of the first antenna component 110 and the second antenna component 120 . It can be seen that in the N28 frequency band (703MHz-788MHz), the ECC values of each curve are relatively small. Therefore, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are very suitable for four low-frequency MIMO system applications.

Please continue to refer to Figures 7 and 8. In this embodiment, at least one of the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 further includes a second switching circuit, The second switching circuit is used to adjust the effective electrical length of the radiator of the antenna component where the second switching circuit is located, so as to adjust the frequency band supported by the antenna component where the second switching circuit is located.

In the schematic diagram of this embodiment, it is taken as an example that the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 all include a second switching circuit. In the schematic diagram of this embodiment , the second switching circuit of the second antenna component 120 is represented by SW2, the second switching circuit of the third antenna component 130 is represented by SW3, and the second switching circuit of the fourth antenna component 140 is represented by SW4. . Understandably, this should not be understood as a limitation on the electronic device 1 provided in the embodiment of the present application. As long as at least one of the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 further includes a second switching circuit. The second switching circuit is used to adjust the effective electrical length of the radiator of the antenna component where the second switching circuit is located to adjust the frequency band supported by the antenna component where the second switching circuit is located, specifically: when the When the second antenna component 120 further includes a second switching circuit SW2, the second switching circuit SW2 is used to adjust the frequency band supported by the second antenna component 120; when the third antenna component 130 further includes a second switching circuit When SW3 is used, the second switching circuit SW3 is used to adjust the frequency band supported by the third antenna component 130; when the fourth antenna component 140 further includes a second switching circuit SW4, the second switching circuit SW4 is used to adjust the frequency band supported by the third antenna component 130. To adjust the frequency band supported by the fourth antenna component 140. It can be understood that the structures of the second switching circuits in different antenna assemblies may be the same or different, and are not limited here.

In this embodiment, in the second antenna assembly 120 , the second switching circuit SW2 is electrically connected to the connection point of the second antenna radiator 121 and the second feed of the second antenna radiator 121 . Electric point A2 is different. In other embodiments, in the second antenna assembly 120 , the second switching circuit SW2 is electrically connected to a connection point of the second antenna radiator 121 and a feed point of the second antenna radiator 121 Same as A2.

In this embodiment, the second switching circuit SW3 is electrically connected to the third feed point A3 of the third antenna radiator 131 as an example. In other embodiments, the second switching circuit SW3 is electrically connected to the third feeding point A3 of the third antenna radiator 131 . The connection point to the third antenna radiator 131 may also be in a different position from the third feeding point A3. In other implementations, the third antenna component 130 may not include the second switching circuit SW3.

In the fourth antenna assembly 140 , the connection point where the second switching circuit SW4 is electrically connected to the fourth antenna radiator 141 is different from the fourth feeding point A4 of the fourth antenna radiator 141 . Since the fourth feeding point A4 of the fourth antenna radiator 141 is disposed adjacent to the fourth ground terminal 141a, when the second switching circuit SW4 is electrically connected to the connection point of the fourth antenna radiator 141 and the When the fourth feed point A4 of the fourth antenna radiator 141 is the same, the performance of the fourth antenna component 140 will be reduced.

To sum up, the connection point of the second switching circuit in the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 is electrically connected to the radiator of the corresponding antenna component as far as possible from the ground end of the corresponding radiator. And adjacent to the free end of the corresponding radiator. For example, the connection point of the second switching circuit SW4 in the fourth antenna component 140 that is electrically connected to the fourth antenna radiator 141 is away from the fourth ground terminal 141a.

When the foldable body 20 is in the folded state, the second antenna component 120 is configured to transmit the transmit signal of the first low frequency band and receive the main set receive signal of the first low frequency band. One of the third antenna component 130 and the fourth antenna component 140 is used to transmit the transmission signal of the second low frequency band and receive the main set reception signal of the second low frequency band, and the other is used to Receive the diversity reception signal of the first low frequency band and the diversity reception signal of the second low frequency band, and implement CA or ENDC of the first low frequency band and the second low frequency band.

The first low frequency band is different from the second low frequency band. The first low frequency band may be the N28 frequency band, and the second low frequency band may be the B20 frequency band; or the first low frequency band may be the B20 frequency band, and the second low frequency band may be the N28 frequency band. Since the frequency ranges of the downlink signals of the B20 frequency band and the N28 frequency band are relatively close, the other one of the third antenna component 130 and the fourth antenna component 140 can receive the diversity reception signal of the first low frequency band. and the diversity reception signal of the second low-frequency band. This application does not limit the specific frequency bands of the first low frequency band and the second low frequency band, as long as the first low frequency band is located at low frequency, the second low frequency band is also located at low frequency, and the first low frequency band It just needs to be different from the second low frequency band.

One of the third antenna component 130 and the fourth antenna component 140 is used to transmit the transmission signal of the second low frequency band and receive the main set reception signal of the second low frequency band, and the other is used to Receive the diversity reception signal of the first low frequency band and the diversity reception signal of the second low frequency band, including: the third antenna component 130 is used to transmit the transmission signal of the second low frequency band and receive the second low frequency band. The fourth antenna component 140 is used to receive the diversity reception signal of the first low frequency band and the diversity reception signal of the second low frequency band; or, the fourth antenna component 140 uses In transmitting the transmission signal of the second low frequency band and receiving the main set reception signal of the second low frequency band, the third antenna component 130 is used to receive the diversity reception signal of the first low frequency band and the second low frequency band. Diversity reception of signals in low frequency bands.

In this embodiment, when the foldable body 20 is in the folded state, the second antenna component 120 is used to transmit the transmit signal of the first low frequency band and receive the main set receive signal of the first low frequency band. , the fourth antenna component 140 is used to transmit the transmission signal of the second low frequency band and receive the main set reception signal of the second low frequency band, and the third antenna component 130 is used to receive the diversity of the first low frequency band. Receive the signal and the diversity reception signal of the second low-frequency band to implement CA or ENDC of the first low-frequency band and the second low-frequency band.

In the embodiment of the present application, the location of other components (such as sound chambers and microphones) in the electronic device 1 results in a better environment for the fourth antenna component 140 than for the third antenna component 130 By using the fourth antenna component 140 to transmit the transmission signal of the second low-frequency band and receive the main set reception signal of the second low-frequency band, the antenna device 10 can have better transmission performance.

Please refer to FIGS. 21 and 22 . FIG. 21 is a schematic diagram of the foldable main body of the electronic device in an unfolded state according to yet another embodiment of the present application. FIG. 22 is a schematic diagram of the foldable main body in FIG. 21 in a folded state. The electronic device 1 includes a foldable main body 20 and an antenna device 10 . The foldable body 20 has an unfolded state and a folded state. The antenna device 10 includes a first antenna component 110 , a second antenna component 120 , a third antenna component 130 and a fourth antenna component 140 disposed on the foldable body 20 .

The first antenna assembly 110 includes a first antenna radiator 111. The first antenna radiator 111 has a first ground terminal 111a and a first free end 111b. The first antenna radiator 111 connects with the first ground terminal 111a through the first ground terminal 111a. The foldable body 20 is connected, and the direction from the first ground end 111a to the first free end 111b is the first direction.

The second antenna assembly 120 includes a second antenna radiator 121. The second antenna radiator 121 has a second ground end 121a and a second free end 122b. The second antenna radiator 121 passes through the second ground end. The end 121a is connected to the foldable body 20, and the direction from the second ground end 121a to the second free end 122b is a second direction, and the second direction is the same as the first direction.

The first antenna radiator 111 and the second antenna radiator 121 are respectively located on opposite sides of the foldable body 20 when the foldable body 20 is in the unfolded state; the first antenna radiator 111 and the second antenna radiator 121 The antenna radiator 121 is located on the same side of the foldable body 20 when the foldable body 20 is in a folded state.

The third antenna assembly 130 includes a third antenna radiator 131. The third antenna radiator 131 has a third ground end 131a and a third free end 131b. The third ground end 131a to the third free end The direction of 131b is the third direction.

The fourth antenna assembly 140 includes a fourth antenna radiator 141. The fourth antenna radiator 141 has a fourth ground end 141a and a fourth free end 141b. The fourth ground end 141a to the fourth free end The direction of 141b is a fourth direction, wherein the fourth direction is opposite to the third direction.

When the foldable body 20 is in the unfolded state, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first MIMO in the low frequency band. When the foldable body 20 is in the folded state, the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first low frequency band and the second low frequency band. CA or ENDC.

When the foldable body 20 is in the unfolded state, the first antenna component 110 , the second antenna component 120 , the third antenna component 130 and the fourth antenna component 140 are used to support the first MIMO in the low-frequency band; when the foldable body 20 is in the folded state, the second antenna component 120, the third antenna component 130 and the fourth antenna component 140 are used to support the first low-frequency band and For the specific situation of CA or ENDC in the second low-frequency band, please refer to the previous description and will not be repeated here.

To sum up, low-frequency band communication, such as the N28 (703-733MHz uplink, 758-788MHz downlink) frequency band, has the advantages of long coverage distance and good stability. For 5G communication systems, it is very important to re-cultivate low-frequency band communication. important. Since this frequency band is a lower frequency band, the antenna occupies a very large space for the size of a mobile phone. Especially when designing MIMO that supports low-frequency bands, the environment is very compact, and the envelope correlation coefficient between antenna components is large, which will Affects the communication performance of its MIMO system. This implementation is based on improving the performance of the MIMO system, improving the spatial correlation between multiple antenna components, thereby increasing the rank of the MIMO channel matrix, thereby optimizing the throughput rate of the communication system.

The electronic device 1 provided by this application designs a new antenna architecture on the foldable electronic device 1. Based on improving the performance of the MIMO system, it improves the spatial correlation between multiple antenna components, making the ECC smaller, thereby improving The rank of the MIMO channel matrix, thereby optimizing the throughput of the communication system.

The antenna device 10 in the foldable electronic device 1 of the present application utilizes the orthogonal principle of far-field electric field polarization directions and the principle of different main radiation directions to achieve extremely low ECC characteristics under orthogonal polarization and main radiation. The better ECC characteristics (i.e., smaller ECC) in the opposite direction pattern make the ECC coefficient between the first antenna component 110 and the second antenna component 120 relatively low when the foldable body 20 is deployed, and the foldable body 20 is deployed The ECC coefficients between the third antenna component 130 and the fourth antenna component 140 in this state are both low, and can be better suitable for MIMO systems. The four-antenna MIMO architecture of this application can be applied to the low-frequency golden band to realize the four-low-frequency antenna MIMO architecture. When in the folded state, switching by the first switching circuit SW1 enables the antenna device 10 to support CA or ENDC of the first low frequency band and the second low frequency band. Therefore, the electronic device 1 provided by the embodiment of the present application has good antenna performance and communication performance regardless of whether the foldable body 20 is in an unfolded state or in a folded state.

It should be noted that in the previous embodiment, when the foldable main body 20 is in the folded state, the first antenna radiator 111 and the second antenna radiator 121 are facing each other as an example. Please refer to FIG. 23 and FIG. 24 together. FIG. 23 is a schematic diagram of the foldable main body of the electronic device in an unfolded state according to another embodiment of the present application. FIG. 24 is a schematic diagram of the foldable main body of the electronic device in FIG. 23 in a folded state. Schematic diagram of the status. In the schematic diagram of this embodiment, only the first antenna radiator 111 and the second antenna radiator 121 are shown, but the third antenna radiator 131 and the fourth antenna radiator 141 are not shown. In this embodiment, the first antenna radiator 111 and the second antenna radiator 121 are not shown. The antenna radiator 111 and the second antenna radiator 121 can be combined into any of the previous embodiments regarding the third antenna radiator 131 and the fourth antenna radiator 141 . When the foldable main body 20 is in the folded state, the first antenna radiator 111 and the second antenna radiator 121 are directly opposite or disposed in an offset direction in the extension direction of the first antenna radiator 111. When the first antenna radiator 111 is in a folded state, When the antenna radiator 111 and the second antenna radiator 121 are dislocated, the first antenna radiator 111 and the second antenna radiator 121 are dislocated by a distance d ₁ : d ₁ ≤ λ ₁ /12, λ ₁ is the wavelength corresponding to the frequency band supported by the second antenna component 120 .

When the foldable main body 20 is in the folded state, the first antenna radiator 111 and the second antenna radiator 121 face each other. The distance between them is small, and the first antenna radiator 111 and the second antenna radiator 121 are coupled. When the foldable body 20 is in the folded state, the first antenna radiator 111 and the second antenna radiator 121 are disposed staggered in the extension direction of the first antenna radiator 111 , including the first antenna radiator 111 and the second antenna radiator 121 . The radiator 111 is closer to the top (third side 213 ) of the foldable body 20 than the second antenna radiator 121 ; or, the first antenna radiator 111 radiates closer to the second antenna than the second antenna radiator 121 . The body 121 is away from the top edge (third edge 213) of the foldable body 20. When the first antenna radiator 111 and the second antenna radiator 121 are offset, the offset distance d ₁ between the first antenna radiator 111 and the second antenna radiator 121 is: d ₁ ≤ λ ₁ /12, when λ ₁ is the wavelength corresponding to the frequency band supported by the second antenna component 120, there is a better coupling effect between the first antenna radiator 111 and the second antenna radiator 121, so that the The second antenna component 120 can support more frequency bands.

In other embodiments, when the foldable main body 20 is in the folded state, the first antenna radiator 111 and the second antenna radiator 121 can also be positioned perpendicular to the axis L0 of the foldable main body 20 . The offset arrangement is in the direction. For example, the offset distance d ₂ between the first antenna radiator 111 and the second antenna radiator 121 is: d ₂ ≤ λ ₁ /12, λ ₁ is supported by the second antenna component 120 The wavelength corresponding to the frequency band.

It should be noted that, in the above embodiment, the first ground terminal 111a is electrically connected to the foldable body 20 for grounding. When the first ground terminal 111a is electrically connected to the foldable body 20 for grounding, it may be directly or indirectly electrically connected to the reference ground (ground system) of the foldable body 20 . In other embodiments, the first ground terminal 111a may also be electrically connected to a separate reference ground (also called a ground system) other than the foldable body 20 for grounding. For example, the first ground terminal 111a is electrically connected to the ground of the circuit board or the ground of the screen.

It should be noted that, in the above embodiment, the second ground terminal 121a is electrically connected to the foldable body 20 for grounding. When the second ground terminal 121a is electrically connected to the foldable body 20 for grounding, it may be directly or indirectly electrically connected to the reference ground (ground system) of the foldable body 20 . In other embodiments, the second ground terminal 121a may also be electrically connected to a separate reference ground (also called a ground system) other than the foldable body 20 for grounding. For example, the second ground terminal 121a is electrically connected to the ground of the circuit board or the ground of the screen.

It should be noted that, in the above embodiment, the third ground terminal 131a is electrically connected to the foldable body 20 for grounding. When the third ground terminal 131a is electrically connected to the foldable body 20 for grounding, it may be directly or indirectly electrically connected to the reference ground (ground system) of the foldable body 20 . In other embodiments, the third ground terminal 131a may also be electrically connected to a separate reference ground (also called a ground system) other than the foldable body 20 for grounding. For example, the third ground terminal 131a is electrically connected to the ground of the circuit board or the ground of the screen.

It should be noted that, in the above embodiment, the fourth ground terminal 141a is electrically connected to the foldable body 20 for grounding. When the fourth ground terminal 141a is electrically connected to the foldable body 20 for grounding, it may be directly or indirectly electrically connected to the reference ground (ground system) of the foldable body 20 . In other embodiments, the fourth ground terminal 141a may also be electrically connected to a separate reference ground (also called a ground system) other than the foldable body 20 for grounding. For example, the fourth ground terminal 141a is electrically connected to the ground of the circuit board or the ground of the screen.

The above are some embodiments of the present application. It should be pointed out that for those of ordinary skill in the technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also regarded as This is the protection scope of this application.

Claims

An electronic device, wherein the electronic device includes:

The foldable body has an unfolded state and a folded state; and

An antenna device includes a first antenna component and a second antenna component provided on the foldable body;

The first antenna assembly includes a first antenna radiator and a first feed source electrically connected to the first antenna radiator through a first switching circuit. The first antenna radiator has a first ground terminal and a first free end, the first antenna radiator is connected to the foldable body through the first ground end, and the direction from the first ground end to the first free end is the first direction;

The second antenna assembly includes a second antenna radiator, the second antenna radiator has a second ground end and a second free end, and the second antenna radiator is connected to the foldable end through the second ground end. The main body is connected, and the direction from the second ground end to the second free end is a second direction, and the second direction is the same as the first direction;

When the foldable body is in the unfolded state: the first antenna radiator and the second antenna radiator are located on opposite sides of the foldable body respectively, and the first antenna component and the second antenna component are To support the first low frequency band;

When the foldable body is in the folded state: the first antenna radiator and the second antenna radiator are located on the same side of the foldable body, and the first antenna component is used to support medium frequency bands and/or high frequency bands. frequency band, or the first antenna radiator is disconnected from the first feed source through the first switching circuit.
The electronic device according to claim 1, wherein the antenna device further includes a third antenna component and a fourth antenna component provided on the foldable body;

When the foldable body is in the unfolded state, the first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to support MIMO of the first low frequency band;

When the foldable body is in a folded state, the second antenna component, the third antenna component and the fourth antenna component are used to support CA or ENDC of the first low frequency band and the second low frequency band.
The electronic device of claim 1, wherein the foldable body includes a first corner portion, a second corner portion, a third corner portion and a fourth corner portion, and when the foldable body is in an unfolded state, the The first corner part and the second corner part are arranged diagonally, the third corner part and the fourth corner part are arranged diagonally, and the first corner part and the third corner part are located at The second corner portion and the fourth corner portion are located on the same side of the axis of the foldable body; the first antenna radiator is located on the first corner portion and the third corner portion. between the corner parts, the first direction is parallel to the axis; the second antenna radiator is located between the second corner part and the fourth corner part, the second direction is parallel to the axis .
The electronic device of claim 3, wherein the first free end is disposed adjacent to the third corner portion compared to the first ground end; and the second free end is disposed adjacent to the second ground end. The end is disposed adjacent to the second corner portion.
The electronic device of claim 1, wherein when the foldable body is in a folded state, the first antenna radiator is disconnected from the first feed source through the first switching circuit, and the The first antenna radiator is coupled to the second antenna radiator.
The electronic device of claim 1, wherein the electronic device further includes:

A detector, the detector is used to detect the state of the foldable body to obtain a detection signal, wherein the state of the foldable body includes a folded state and an unfolded state; and

A controller, the controller is electrically connected to the detector and the first switching circuit, the controller is used to determine whether the foldable body is in a folded state according to the detection signal, and determines whether the foldable body is in a folded state. When the main body is in the folded state, the first antenna component is controlled to support the medium frequency band and/or the high frequency band, or the first switch is controlled to cause the first antenna radiator to be disconnected through the first switch circuit. connection to said first feed.
The electronic device of claim 5, wherein when the foldable body is in a folded state, the first antenna radiator and the second antenna radiator are facing or in the extending direction of the first antenna radiator. When the first antenna radiator and the second antenna radiator are offset, the offset distance d 1 between the first antenna radiator and the second antenna radiator is: d 1 ≤ λ 1 /12, λ 1 is the wavelength corresponding to the frequency band supported by the second antenna component.
The electronic device of claim 2, wherein when the foldable body is in an unfolded state, the first antenna component or the second antenna component is used to transmit a transmission signal of the first low frequency band, so The first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to receive the received signal of the first low frequency band and implement MIMO of the first low frequency band.
The electronic device according to claim 2, wherein when the foldable body is in an unfolded state, the first antenna component and the second antenna component are used to transmit the transmission signal of the first low frequency band, so The first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to receive the received signal of the first low frequency band and implement MIMO of the first low frequency band.
The electronic device of claim 2, wherein when the foldable body is in an unfolded state, the first antenna component, the second antenna component, the third antenna component and the fourth antenna component The first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to transmit the transmission signal of the first low frequency band. Receive signals to implement MIMO in the first low-frequency band.
The electronic device of claim 8, wherein the third antenna assembly includes a third antenna radiator, the third antenna radiator and the first antenna radiator are located on the same axis of the foldable body. side, and corresponding to different sides of the foldable body, the third antenna radiator has a third ground end and a third free end, and the direction from the third ground end to the third free end is a third direction; the fourth antenna includes a fourth antenna radiator, the fourth antenna radiator and the second antenna radiator are located on the same side of the axis of the foldable body, and correspond to different directions of the foldable body is arranged on the side of the foldable body, or the fourth radiating part and the second antenna radiator are arranged on the same side of the foldable body, and the other part of the fourth antenna radiating body corresponds to the second antenna radiator. Different sides of the foldable body are arranged, the fourth antenna radiator has a fourth ground end and a fourth free end, and the direction from the fourth ground end to the fourth free end is a fourth direction, wherein, the The third direction is opposite to the fourth direction.
The electronic device of claim 11, wherein the third direction is perpendicular to an axis of the foldable body, and the third free end is adjacent to the axis compared to the third ground end; Four directions are perpendicular to the axis of the foldable body, and the fourth free end is adjacent to the axis than the fourth ground end.
The electronic device of claim 12, wherein the foldable body includes a first corner portion, a second corner portion, a third corner portion and a fourth corner portion, and when the foldable body is in an unfolded state, the The first corner part and the second corner part are arranged diagonally, the third corner part and the fourth corner part are arranged diagonally, and the first corner part and the third corner part are located at The second corner portion and the fourth corner portion are located on the same side of the axis of the foldable body; the fourth antenna is located at the fourth corner, and the first free end is opposite to the axis of the foldable body. The third free end is closer to the first corner than the first ground end, and the third free end is further away from the first corner than the third ground end.
The electronic device of claim 11, wherein the main radiation directions of the third antenna component and the fourth antenna component are opposite when the foldable body is in the unfolded state.
The electronic device of claim 11 or 14, wherein the third antenna component excites a first equivalent current on the foldable body, and the fourth antenna component excites a first equivalent current on the foldable body. a second equivalent current, the flow direction of the second equivalent current is opposite to that of the first equivalent current, and the flow direction of the first equivalent current is perpendicular to the axis of the foldable body, and the second equivalent current flows in an opposite direction to the first equivalent current. The flow direction of the effective current is perpendicular to the axis of the foldable body.
The electronic device of claim 8, wherein at least one of the second antenna component, the third antenna component, and the fourth antenna component further includes a second switching circuit, the second switching circuit It is used to adjust the effective electrical length of the radiator of the antenna component where the second switching circuit is located, so as to adjust the frequency band supported by the antenna component where the second switching circuit is located.
The electronic device of claim 2, wherein when the foldable body is in a folded state, the second antenna component is configured to transmit a transmission signal of the first low frequency band and receive a transmission signal of the first low frequency band. The main set receives signals, and one of the third antenna component and the fourth antenna component is used to transmit the transmit signal of the second low frequency band and receive the main set receive signal of the second low frequency band, and the other The other is used to receive the diversity reception signal of the first low frequency band and the diversity reception signal of the second low frequency band, and implement CA or ENDC of the first low frequency band and the second low frequency band.
The electronic device of claim 17, wherein when the foldable body is in a folded state, the second antenna component is configured to transmit a transmission signal of the first low frequency band and receive a transmission signal of the first low frequency band. The main set receives signals, the fourth antenna component is used to transmit the transmit signal of the second low frequency band and receive the main set receive signal of the second low frequency band, and the third antenna component is used to receive the first low frequency band. The diversity reception signal and the diversity reception signal of the second low frequency band are used to implement CA or ENDC of the first low frequency band and the second low frequency band.
The electronic device of claim 1, wherein far-field polarization directions of the first antenna component and the second antenna component intersect or are orthogonal when the foldable body is in an unfolded state.
An electronic device, wherein the electronic device includes:

The foldable body has an unfolded state and a folded state; and

An antenna device includes a first antenna component, a second antenna component, a third antenna component and a fourth antenna component provided on the foldable body;

The first antenna assembly includes a first antenna radiator, the first antenna radiator has a first ground end and a first free end, and the first antenna radiator is connected to the foldable body through the first ground end, The direction from the first ground end to the first free end is the first direction;

The second antenna assembly includes a second antenna radiator, the second antenna radiator has a second ground end and a second free end, and the second antenna radiator is connected to the foldable end through the second ground end. The main body is connected, and the direction from the second ground end to the second free end is a second direction, and the second direction is the same as the first direction;

The first antenna radiator and the second antenna radiator are respectively located on opposite sides of the foldable body when the foldable body is in an unfolded state; the first antenna radiator and the second antenna radiator are located on the opposite sides of the foldable body. The foldable body is located on the same side of the foldable body when it is in a folded state;

The third antenna assembly includes a third antenna radiator, the third antenna radiator has a third ground end and a third free end, and the direction from the third ground end to the third free end is a third direction;

The fourth antenna assembly includes a fourth antenna radiator, the fourth antenna radiator has a fourth ground end and a fourth free end, and the direction from the fourth ground end to the fourth free end is a fourth direction, Wherein, the fourth direction is opposite to the third direction;

When the foldable body is in the unfolded state, the first antenna component, the second antenna component, the third antenna component and the fourth antenna component are used to support MIMO of the first low frequency band; When the foldable body is in a folded state, the second antenna component, the third antenna component and the fourth antenna component are used to support CA or ENDC of the first low frequency band and the second low frequency band.
The electronic device of claim 20, wherein the foldable body includes a first corner portion, a second corner portion, a third corner portion and a fourth corner portion, and when the foldable body is in an unfolded state, the The first corner part and the second corner part are arranged diagonally, the third corner part and the fourth corner part are arranged diagonally, and the first corner part and the third corner part are located at The second corner portion and the fourth corner portion are located on the same side of the axis of the foldable body; the first antenna radiator is located on the first corner portion and the third corner portion. between the corner parts, the first direction is parallel to the axis; the second antenna radiator is located between the second corner part and the fourth corner part, the second direction is parallel to the axis .
The electronic device of claim 21, wherein the first free end is disposed adjacent to the third corner portion compared to the first ground end; and the second free end is disposed adjacent to the second ground end. The end is disposed adjacent to the second corner portion.
The electronic device of claim 20, wherein when the foldable body is in a folded state, the first antenna radiator and the second antenna radiator are facing or in the extending direction of the first antenna radiator. When the first antenna radiator and the second antenna radiator are offset, the offset distance d 1 between the first antenna radiator and the second antenna radiator is: d 1 ≤ λ 1 /12, λ 1 is the wavelength corresponding to the frequency band supported by the second antenna component.
The electronic device of claim 20, wherein the third antenna radiator and the first antenna radiator are located on the same side of the axis of the foldable body and correspond to different sides of the foldable body. Setup; the fourth antenna radiator and the second antenna radiator are located on the same side of the axis of the foldable body, and are arranged corresponding to different sides of the foldable body, or the part of the fourth radiation is on the same side as the axis of the foldable body. The second antenna radiator is arranged corresponding to the same side of the foldable body, and the other part of the fourth antenna radiator and the second antenna radiator are arranged corresponding to different sides of the foldable body.
The electronic device of claim 24, wherein the third direction is perpendicular to an axis of the foldable body, and the third free end is adjacent to the axis compared to the third ground end; Four directions are perpendicular to the axis of the foldable body, and the fourth free end is adjacent to the axis than the fourth ground end.
The electronic device of claim 25, wherein the foldable body includes a first corner portion, a second corner portion, a third corner portion and a fourth corner portion, and when the foldable body is in an unfolded state, the The first corner part and the second corner part are arranged diagonally, the third corner part and the fourth corner part are arranged diagonally, and the first corner part and the third corner part are located at The second corner portion and the fourth corner portion are located on the same side of the axis of the foldable body; the fourth antenna is located at the fourth corner, and the first free end is opposite to the axis of the foldable body. The third free end is closer to the first corner than the first ground end, and the third free end is further away from the first corner than the third ground end.
The electronic device of claim 20, wherein when the foldable body is in a folded state, the second antenna component is configured to transmit a transmission signal of the first low frequency band and receive a transmission signal of the first low frequency band. The main set receives signals, and one of the third antenna component and the fourth antenna component is used to transmit the transmit signal of the second low frequency band and receive the main set receive signal of the second low frequency band, and the other is used to transmit the transmit signal of the second low frequency band and receive the main set receive signal of the second low frequency band. Upon receiving the diversity reception signal of the first low frequency band and the diversity reception signal of the second low frequency band, CA or ENDC of the first low frequency band and the second low frequency band is implemented.