CN116666966A

CN116666966A - Electronic apparatus and control method thereof

Info

Publication number: CN116666966A
Application number: CN202210159064.0A
Authority: CN
Inventors: 王泽东
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2023-08-29
Also published as: WO2023155596A1

Abstract

The application discloses an electronic device and a control method thereof. The antenna assembly comprises a first antenna unit and a second antenna unit which are arranged on the foldable main body, and the first antenna unit and the second antenna unit are respectively arranged on two opposite sides of the foldable main body when the foldable main body is in an unfolding state; the first antenna unit and the second antenna unit are disposed on the same side of the foldable body when the foldable body is in the folded state. The first antenna element and the second antenna element support at least the same frequency band when the foldable body is in the unfolded state and support different frequency bands when the foldable body is in the folded state. The electronic equipment provided by the application can effectively improve the antenna performance of the antenna assembly under different forms of the electronic equipment.

Description

Electronic apparatus and control method thereof

Technical Field

The present application relates to the field of communications technologies, and in particular, to an electronic device and a control method for the electronic device.

Background

With the development of large screens of electronic devices, foldable electronic devices have become a research and development hotspot. As an important part of communication on an electronic device, the isolation and the envelope correlation coefficient between a plurality of antennas are affected by the change of the folding state of the foldable electronic device, so how to improve the antenna performance of the antenna assembly on the foldable electronic device under different forms is an important point to be studied.

Disclosure of Invention

The embodiment of the application provides electronic equipment and a control method of the electronic equipment, which can effectively improve the antenna performance of an antenna assembly on foldable electronic equipment in different forms.

In a first aspect, an electronic device provided in an embodiment of the present application includes:

a foldable body; a kind of electronic device with high-pressure air-conditioning system

The antenna assembly comprises a first antenna unit and a second antenna unit which are arranged on the foldable main body, and the first antenna unit and the second antenna unit are respectively arranged on two opposite sides of the foldable main body when the foldable main body is in an unfolding state; the first antenna unit and the second antenna unit are arranged on the same side of the foldable main body when the foldable main body is in a folded state; the first antenna element and the second antenna element support at least the same frequency band when the foldable body is in the unfolded state and support different frequency bands when the foldable body is in the folded state.

In a second aspect, an embodiment of the present application further provides a control method of an electronic device, where the method is applied to the electronic device, and the method includes:

acquiring a target form of a foldable main body of the electronic equipment, wherein the target form comprises a folding state and an unfolding state;

Determining a first antenna unit of the electronic equipment and a second antenna unit of the electronic equipment as a first working mode according to the folding state, wherein the first working mode is that the first antenna unit and the second antenna unit support different frequency bands; wherein the first antenna unit and the second antenna unit are arranged on the same side of the foldable main body when the foldable main body is in a folded state;

determining that the first antenna unit and the second antenna unit are in a second working mode according to the unfolding state, wherein the second working mode is that the first antenna unit and the second antenna unit support at least the same frequency band; the first antenna unit and the second antenna unit are respectively arranged on two opposite sides of the foldable main body when the foldable main body is in an unfolding state.

According to the electronic equipment and the control method thereof, the working modes of the first antenna unit and the second antenna unit which are arranged on two sides of the foldable main body when the foldable main body is unfolded and are arranged on one side of the foldable main body when the foldable main body is folded are designed, specifically, the first antenna unit and the second antenna unit support at least the same frequency band in an unfolded state, the first antenna unit and the second antenna unit support different frequency bands in the folded state, the isolation degree of the first antenna unit and the second antenna unit in the folded state is improved by adjusting the size of the supporting different frequency bands, so that the antenna performance of the first antenna unit and the second antenna unit in the folded state of the electronic equipment is improved, the same frequency bands are supported by adjusting the first antenna unit and the second antenna unit in the unfolded state, a multi-input multi-output antenna system is formed, and the antenna performance of the antenna assembly in the unfolded state of the electronic equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is an exploded view of the electronic device provided in FIG. 1;

fig. 3 is a top view of the foldable body and the first antenna assembly of fig. 2 in an unfolded state;

fig. 4 is a top view of the foldable body and the first antenna assembly of fig. 3 in a folded condition;

fig. 5 is a schematic structural diagram of the antenna assembly in fig. 3 provided with a first switch circuit;

FIG. 6 is a schematic diagram of the first switch circuit in FIG. 5;

fig. 7 is a schematic diagram of a structure in which the antenna assembly in fig. 3 is provided with a second switch circuit;

FIG. 8 is a schematic diagram of the second switch circuit of FIG. 7;

fig. 9 is a schematic diagram of the antenna assembly in fig. 3 with a first switch circuit and a second switch circuit;

Fig. 10 is a current profile in the antenna assembly shown in fig. 9;

fig. 11 is a top view of the foldable body and the second antenna assembly of fig. 2 in an unfolded state;

fig. 12 is a current distribution diagram of a third antenna element of the second antenna assembly of fig. 11;

fig. 13 is a current distribution diagram of a second antenna element of the second antenna assembly of fig. 11;

fig. 14 is a far field pattern of the third antenna element shown in fig. 12;

fig. 15 is a far field pattern of the second antenna element shown in fig. 13;

FIG. 16 is an ECC graph of the second antenna element and the third antenna element shown in FIG. 11;

fig. 17 is a top view of the foldable body and the third antenna assembly of fig. 2 in an unfolded state;

fig. 18 is a current distribution diagram of a fourth antenna element of the third antenna assembly shown in fig. 17;

fig. 19 is a far field pattern of the fourth antenna element shown in fig. 17;

fig. 20 is an ECC graph of the third antenna element and the fourth antenna element shown in fig. 17;

FIG. 21 is a graph of ECC between the antenna elements of the antenna assembly of FIG. 17 in an expanded state;

fig. 22 is a schematic view of the antenna assembly of fig. 17 in a folded state;

fig. 23 is an ECC graph of the antenna assembly shown in fig. 17 in a folded state.

Fig. 24 is a top view of the foldable body and fourth antenna assembly of fig. 2 in an unfolded state;

fig. 25 is a flowchart of a control method of a first electronic device according to an embodiment of the present application;

fig. 26 is a flowchart of a control method of a second electronic device according to an embodiment of the present application;

fig. 27 is a flowchart of a control method of a third electronic device according to an embodiment of the present application.

Reference numerals illustrate:

an electronic device 1000; a foldable body 400; an antenna assembly 100; a first body 410; a rotation shaft 420; the second body 430 displays the screen 200; a housing 300; a bezel 310; a rear cover 320; a first antenna element 10; a second antenna unit 20; a first feed 12; a first matching circuit M1; a first radiator 11; a first feeding point A1; a second feed 22; a second matching circuit M2; a second radiator 21; a second feeding point A2; a first switch switching circuit K1; a first adjustment node B1; a first switching switch K11; a first regulating circuit T1; a second switch switching circuit K2; a second adjustment node B2; a second changeover switch K21; a second regulating circuit T2; a first free end 111; a first feeding point A1; a first ground 112; a second free end 211; a second feeding point A2; a second ground 212; a first edge 411; a second edge 412; a third side 413; fourth side 431; a fifth edge 432; a sixth edge 433; a first corner portion 414; a third corner 415; a second corner 434; a fourth corner 435; a third antenna element 30; a third radiator 31; a third matching circuit M3; a third feed 32; a third free end 311; a third feeding point A3; a third ground 312; a third switch switching circuit K3; a third adjustment node B3; a fourth antenna unit 40; a fourth radiator 41; a fourth matching circuit M4; a fourth feed 42; a fourth free end 411; a fourth feeding point A4; a fourth ground 412; a fourth switch switching circuit K4; fourth adjustment node B4.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. Furthermore, references to "an embodiment" or "an implementation" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the disclosure. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the application. The foldable electronic device in the embodiments of the present application may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an electronic reader, a handheld computer, an electronic display screen, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook, a cellular phone, a personal digital assistant (personal digital assistant, PDA), an augmented reality (augmented reality, AR) \virtual reality (VR) device, a media player, an intelligent wearable device, and other foldable devices. It will be appreciated that the foldable electronic device may be a foldable display device or a foldable non-display device. In the present application, the electronic device 1000 is taken as an example of a folding mobile phone, and other devices may refer to the specific description in the present application.

Referring to fig. 2, the electronic device 1000 includes a foldable main body 400 and an antenna assembly 100.

The foldable body 400 is a skeletal structure of the electronic device 1000. The body form of the foldable body 400 corresponds to the body form of the electronic device 1000. When the foldable body 400 is in the folded state, the electronic device 1000 is in the folded state; when the foldable body 400 is in the unfolded state, the electronic device 1000 is in the unfolded state. Specifically, the foldable body 400 includes, but is not limited to, a center of the electronic device 1000.

In the unfolded state, the foldable main body 400 may be in a flattened shape of 180 ° or may be in a bent shape with a certain bending angle, and the bending angle is not limited. In this embodiment, a flattened shape having an expanded state of 180 ° is taken as an example. When the electronic apparatus 1000 has a display screen, the display screen has a relatively large unfolded area in an unfolded state so that a user can enjoy the electronic apparatus 1000 of a large screen. The folded state refers to a state in which the foldable main body 400 is folded and stacked, and at this time, the electronic device 1000 has a small overall size and is convenient to carry.

Alternatively, the foldable body 400 includes, but is not limited to, a fold-over structure having one rotation axis, and may be a fold-over structure having two or more rotation axes. The present embodiment will be described taking the foldable body 400 as an example of a folded structure.

Referring to fig. 2, the foldable main body 400 includes a first main body 410, a rotating shaft 420, and a second main body 430, which are sequentially connected. At least one of the first body 410 and the second body 430 is rotatable about the rotation axis 420.

For convenience of description, the connection direction of the first body 410, the rotation shaft 420, and the second body 430 is defined as the X-axis direction, and the extension direction of the rotation shaft 420 is defined as the Y-axis direction. The thickness direction of the foldable body 400 in the unfolded state is the Z-axis direction. Wherein, X axis direction, Y axis direction, Z axis direction are two by two perpendicular. Wherein the direction indicated by the arrow is forward.

Optionally, referring to fig. 2, the electronic device 1000 further includes a display screen 200 and a housing 300. The display screen 200 is provided at a front side of the foldable body 400 (the front side refers to a direction toward the user when the user normally uses the display screen 200), and optionally, a portion of the display screen 200 corresponding to the rotation shaft 420 is a flexible display screen that is bendable. Alternatively, no display screen is disposed at the corresponding position of the rotation shaft 420, and two display screens 200 are disposed at the front sides of the first body 410 and the second body 430, respectively.

Referring to fig. 2, the housing 300 includes a frame 310 and a rear cover 320. When the electronic device 1000 is in the unfolded state, the display screen 200 and the rear cover 320 are respectively located at the front and rear sides of the foldable main body 400, wherein the frame 310 is connected between the display screen 200 and the rear cover 320 and surrounds the foldable main body 400, and the display screen 200, the frame 310 and the rear cover 320 form a relatively closed whole machine for the electronic device 1000. Of course, in other embodiments, the rear side of the electronic device 1000 may also be provided with the display screen 200.

The frame 310 and the rear cover 320 may be an integral structure or a split structure. When the frame 310 and the rear cover 320 are in a split structure, the inside of the frame 310 may be formed as an integral structure with the middle frame (foldable body 400). The middle frame is formed with a plurality of mounting grooves for mounting various electronic devices. After the display 200, the middle frame and the rear cover 320 are closed, a receiving space is formed on both sides of the middle frame. The electronic device 1000 further includes a circuit board (including a main board, an auxiliary board, a flexible circuit board, etc.), a battery, a camera module, a microphone, a receiver, a speaker, a face recognition module, a fingerprint recognition module, etc. disposed in the accommodating space, which are not described in detail in this embodiment. It should be understood that the above description of the electronic device 1000 is merely illustrative of one environment in which the antenna assembly 100 may be used, and the specific structure of the electronic device 1000 should not be construed as limiting the antenna assembly 100 provided by the present application.

The antenna assembly 100 may be disposed inside the housing 300 of the electronic device 1000, or partially integrated with the housing 300, or partially disposed outside the housing 300. The antenna assembly 100 is configured to transmit and receive radio frequency signals, where the radio frequency signals are transmitted as electromagnetic wave signals in an air medium, so as to implement a communication function of the electronic device 1000. The antenna assembly 100 is used for transceiving cellular mobile communications 3G, 4G, 5G bands, wi-Fi bands, GNSS bands, bluetooth bands, UWB bands, etc. The location of the antenna assembly 100 on the electronic device 1000 is not particularly limited in the present application, and the location of the antenna assembly 100 on the electronic device 1000 shown in fig. 1 is merely an example.

Referring to fig. 3, the antenna assembly 100 includes a first antenna unit 10 and a second antenna unit 20 disposed on the foldable body 400. As shown in fig. 3, a portion (e.g., a radiator) of the first antenna unit 10 is disposed outside the foldable body 400 and along an edge of the foldable body 400. A portion (e.g., a radiator) of the second antenna unit 20 is disposed outside the foldable body 400 and along the other edge of the foldable body 400.

Referring to fig. 3, the first antenna unit 10 and the second antenna unit 20 are respectively disposed on opposite sides of the foldable body 400 when the foldable body 400 is in the unfolded state. Referring to the view of fig. 3, in the unfolded state of the foldable body 400, the foldable body 400 has a top edge (edge where the third edge 413 and the sixth edge 433 are located), a bottom edge (edge where the second edge 412 and the fifth edge 432 are located), a left edge (fourth edge 431), and a right edge (first edge 411), where the side where the top edge and the bottom edge are located are opposite sides of the foldable body 400, and the side where the left edge and the right edge are located are opposite sides of the foldable body 400. Wherein the side of the third side 413 and the sixth side 433 is a side of the foldable main body 400. The side on which the second side 412 and the fifth side 432 are located is the side of the foldable body 400. The first antenna unit 10 and the second antenna unit 20 shown in fig. 3 are located at the left and right sides of the foldable body 400, respectively. In other embodiments, the first antenna element 10 and the second antenna element 20 may also be located at the top and bottom edges of the foldable body 400.

Referring to fig. 4, the first antenna unit 10 and the second antenna unit 20 are disposed on the same side of the foldable body 400 when the foldable body 400 is in a folded state. In other words, the first antenna unit 10 and the second antenna unit 20 are provided on opposite sides of the folding axis of the foldable body 400, respectively.

Optionally, the first antenna unit 10 and the second antenna unit 20 are disposed on the first body 410 and the second body 430, respectively. Optionally, the first antenna unit 10 is disposed on a side of the first body 410 facing away from the second body 430. The second antenna unit 20 is disposed on a side of the second body 430 facing away from the first body 410. In other words, the first antenna unit 10, the first body 410, the rotation shaft 420, the second body 430, and the second antenna unit 20 are sequentially disposed along the X-axis in the forward direction. The first body 410 and the second body 430 are relatively flattened when the foldable body 400 is in the unfolded state. At this time, the interval between the first antenna unit 10 and the second antenna unit 20 is maximized. The first body 410 and the second body 430 are disposed to overlap when the foldable body 400 is in the folded state. The interval between the first antenna unit 10 and the second antenna unit 20 gradually decreases with the gradual folding of the first and second bodies 410 and 430.

For the first antenna unit 10 and the second antenna unit 20, when the foldable body 400 is in the unfolded state, the first antenna unit 10 is spaced apart from the second antenna unit 20 by a relatively large distance, and the physical distance between the first antenna unit 10 and the second antenna unit 20 is such that the isolation between the first antenna unit 10 and the second antenna unit 20 is relatively high, and the mutual interference between the first antenna unit 10 and the second antenna unit 20 is relatively small. However, when the foldable body 400 is in the folded state, the first antenna unit 10 and the second antenna unit 20 are disposed on the same side of the foldable body 400, at this time, the physical space between the first antenna unit 10 and the second antenna unit 20 is small, and particularly, when both the first antenna unit 10 and the second antenna unit 20 are low frequency antennas, the radiator of the first antenna unit 10 and the radiator of the second antenna unit 20 are long, and the radiator of the first antenna unit 10 and the radiator of the second antenna unit 20 are in a state of being parallel and having a very small space or even contact to some extent, which results in poor isolation between the first antenna unit 10 and the second antenna unit 20, affecting the antenna radiation efficiency of the first antenna unit 10 and the second antenna unit 20.

As the internet surfing speed requirements for electronic device 1000 increase, the throughput requirements for data transmission increase. A multiple-input multiple-output (Multiple Input Multiple Output, MIMO) system has great advantages in terms of improving data rate, and the system uses a plurality of transmitting antennas and a plurality of receiving antennas at a transmitting end and a receiving end of a wireless communication system, respectively, so that signals are transmitted and received through the plurality of antennas at the transmitting end and the receiving end, a plurality of parallel spatial channels are created, and multiple information streams or a plurality of channels are simultaneously transmitted in the same frequency band, thereby increasing system capacity. The MIMO system can fully utilize space resources, realize multiple transmission and multiple reception through a plurality of antennas, and can increase space dimension by using the plurality of antennas under the condition of not increasing frequency spectrum resources and antenna transmitting power, realize multidimensional signal processing, obtain space diversity gain or space multiplexing gain, and can doubly improve the system channel capacity.

Since the MIMO system increases signal capacity by transmitting parallel spatially independent data streams, the MIMO system requires low mutual coupling performance between antennas. An envelope correlation system (Envelope correlation coefficient, ECC) is a quantitative indicator reflecting the spatial correlation between antennas, and can be used to evaluate the independence between antennas in terms of radiation pattern and polarization in a MIMO system. 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.

In order to obtain better communication performance of the MIMO system, the MIMO system requires that the spacing between the antenna elements is above half a wavelength. When the MIMO system is applied to low frequency antennas, the MIMO system has a certain requirement for a space between the low frequency antennas. However, with the miniaturization development of the electronic device 1000, the space on the electronic device 1000 is extremely limited, and how to improve the correlation difference between the antenna units of the MIMO system on the foldable electronic device 1000 and improve the communication performance of the MIMO system is needed to be solved.

The electronic device 1000 provided by the application can solve the problem of reduced isolation between antenna units caused by reduced space between antenna units on the foldable electronic device 1000 in a folded state, can also improve poor correlation between antenna units of a MIMO system, and improves communication performance of the MIMO system, so that the antenna assembly 100 can support the MIMO system and can support a low-frequency MIMO system.

In this embodiment, the first antenna unit 10 and the second antenna unit 20 support at least the same frequency band when the foldable body 400 is in the unfolded state, and support different frequency bands when the foldable body 400 is in the folded state.

It will be appreciated that the electronic device 1000 also includes a controller (not shown). The controller is electrically connected to the first antenna unit 10 and the second antenna unit 20. The controller may control the first antenna unit 10 and the second antenna unit 20 to support at least the same frequency band when the foldable body 400 is in the unfolded state, and to support different frequency bands when the foldable body 400 is in the folded state.

The form of the controller is not specifically described in the present application, and the controller may alternatively be a separate chip or integrated into the cpu of the electronic device 1000.

The controller controlling the first antenna unit 10 and the second antenna unit 20 to support at least the same frequency band when the foldable body 400 is in the unfolded state means that the frequency bands supported by the first antenna unit 10 and the second antenna unit 20 are the same, and may also mean that the frequency bands supported by the first antenna unit 10 and the second antenna unit 20 are partially the same.

The frequency bands supported by the first antenna unit 10 and the second antenna unit 20 are not particularly limited in the present application, and the signal types of the frequency bands may be cellular mobile communication 4G signals or cellular mobile communication 5G signals, and the specific frequency bands may be LB frequency bands, MHB frequency bands, UHB frequency bands, and the like. The LB frequency band refers to a frequency band lower than 1000MHz (excluding 1000 MHz). The MHB band is a band of 1000MHz-3000MHz (including 1000MHz and excluding 3000 MHz). The UHB band refers to a band of 3000MHz-10000MHz (including 3000 MHz). The signal type of the frequency band can also be Wi-Fi signals, GNSS signals, bluetooth signals and the like. Wi-Fi frequency bands include, but are not limited to, at least one of Wi-Fi 2.4G, wi-Fi 5G, wi-Fi 6E, and the like. GNSS, which is collectively known as Global Navigation Satellite System and chinese name global navigation satellite system, includes global positioning system (Global Positioning System, GPS), beidou, global satellite navigation system (Global Navigation Satellite System, GLONASS), galileo satellite navigation system (Galileo satellite navigation system, galileo), regional navigation system, and the like.

For example, the same frequency band supported by the first antenna element 10 and the second antenna element 20 includes that both the first antenna element 10 and the second antenna element 20 support the N28 frequency band. The frequency band supported by the first antenna unit 10 and the second antenna unit 20 are partially identical, including the first antenna unit 10 supporting the N28 frequency band and the N5 frequency band, and the second antenna unit 20 supporting the N28 frequency band and the N8 frequency band.

When the foldable body 400 is in the unfolded state, the envelope correlation coefficient between the antenna elements of the first antenna element 10 and the second antenna element 20 is relatively small when forming a 2 x 2mimo antenna, so as to improve the throughput and data transmission rate of the antenna assembly 100.

The first antenna unit 10 and the second antenna unit 20 support different frequency bands when the foldable body 400 is in the folded state. For example, the first antenna element 10 supports the LB frequency band and the second antenna element 20 supports the MHB frequency band. In this way, the first antenna unit 10 and the second antenna unit 20 transmit and receive different frequency bands, so that the problem of low isolation caused by the small distance between the first antenna unit 10 and the second antenna unit 20 when the foldable main body 400 is in the folded state is reduced.

According to the electronic device 1000 provided by the application, the working modes of the first antenna unit 10 and the second antenna unit 20, which are arranged on two sides of the foldable main body 400 when the foldable main body 400 is unfolded and are positioned on one side of the foldable main body 400 when the foldable main body 400 is folded, are designed, specifically, the first antenna unit 10 and the second antenna unit 20 support at least the same frequency band in an unfolded state, the first antenna unit 10 and the second antenna unit 20 support different frequency bands in a folded state, and the isolation degree of the first antenna unit 10 and the second antenna unit 20 in the folded state is improved by adjusting the size of the frequency bands supported, so that the antenna performance of the first antenna unit 10 and the second antenna unit 20 in the folded state of the electronic device 1000 is improved, the same frequency bands are supported by adjusting the first antenna unit 10 and the second antenna unit 20 in the unfolded state, so that a multi-input multi-output antenna system is formed, and the antenna performance of the antenna assembly 100 in the unfolded state of the electronic device 1000 is improved. The electronic device 1000 provided by the application realizes that the first antenna unit 10 and the second antenna unit 20 have relatively good antenna performance in a foldable state or an unfolding state.

Optionally, the first antenna element 10 and the second antenna element 20 each comprise a radiator. The antenna assembly 100 further includes at least one switch switching circuit electrically connected to the controller. At least one of the switch switching circuits is electrically connected to the radiator of the first antenna element 10 and/or the radiator of the second antenna element 20. The switch switching circuit is configured to adjust the frequency band supported by the first antenna unit 10 and/or the second antenna unit 20 when the foldable main body 400 is in the folded state under the action of the controller, so that the first antenna unit 10 and the second antenna unit 20 support different frequency bands respectively.

For example, the first antenna unit 10 and the second antenna unit 20 support a low frequency when the foldable body 400 is in the folded state. The second antenna unit 20 is switched to a medium-high frequency by a switch switching circuit when the foldable body 400 is in an unfolded state. In addition, a filter circuit may be provided between the feed and the radiator in the second antenna element 20 to filter low frequency signals.

Referring to fig. 3, the first antenna unit 10 includes a first feed source 12, a first matching circuit M1, and a first radiator 11.

The first radiator 11 is a port for receiving and transmitting radio frequency signals of the antenna assembly 100, wherein the radio frequency signals are transmitted in the form of electromagnetic wave signals in an air medium. The shape of the first radiator 11 is not particularly limited in the present application. For example, the shape of the first radiator 11 includes, but is not limited to, a strip shape, a sheet shape, a rod shape, a coating shape, a film shape, and the like. The first radiator 11 shown in fig. 3 is only an example and does not limit the shape of the first radiator 11 provided by the present application. Alternatively, when the frame 310 is made of a conductive material, the first radiator 11 may be integrated with the frame 310, that is, the first radiator 11 is a frame antenna, and a portion of the frame 310 is the first radiator 11. Alternatively, the first radiator 11 may also be a part of the middle frame (i.e. the foldable body 400), so that the first radiator 11 and the middle frame are interconnected as a unitary structure. The first radiator 11 may be formed by cutting slits in the middle frame. In this embodiment, the portion of the frame 310 corresponding to the first radiator 11 may be made of a non-conductive material, so that the first radiator 11 can transmit and receive electromagnetic wave signals through the frame 310. Still alternatively, the antenna formed by the first radiator 11 is a bracket antenna. Among them, the bracket antenna includes, but is not limited to, a flexible circuit board antenna molded on a flexible circuit board (Flexible Printed Circuit board, FPC), a laser direct structuring antenna by laser direct structuring (Laser Direct Structuring, LDS), a printed direct structuring antenna by printing direct structuring (Print Direct Structuring, PDS), a conductive sheet antenna, and the like.

Optionally, the material of the first radiator 11 is a conductive material, and specific materials include, but are not limited to, metals such as copper, gold, silver, etc., or alloys formed by copper, gold, silver, etc.; graphene, or a conductive material formed by combining graphene with other materials; oxide conductive materials such as indium tin oxide; carbon nanotubes and polymers form hybrid materials, and the like.

Referring to fig. 3, the first radiator 11 has a first feeding point A1. The first feed 12 is electrically connected to the first feed point A1. The first feed 12 includes, but is not limited to, a radio frequency transceiver chip and a radio frequency front-end circuit. The first feed 12 is disposed on a motherboard of the electronic device 1000.

The first matching circuit M1 is disposed on a motherboard of the electronic device 1000, one end of the first matching circuit M1 is electrically connected to the first feed point A1, and the other end of the first matching circuit M1 is electrically connected to the first feed source 12. The first matching circuit M1 is configured to tune a frequency band supported by the first radiator 11. 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.

The first matching circuit M1 is electrically connected to the first feeding point A1 by, but not limited to, direct welding or indirect electrical connection by means of coaxial lines, microstrip lines, conductive clips, conductive adhesives, etc. In this embodiment, the first feeding point A1 is electrically connected to the first matching circuit M1 through a conductive member (e.g., a conductive spring).

The radio frequency signal emitted by the first feed source 12 is fed into the first radiator 11 through the first feed point A1, and the radio frequency signal can excite the first radiator 11 to generate resonance current to form resonance so as to support a frequency band corresponding to the resonance current. Of course, the first feed 12 may also receive radio frequency signals through the first radiator 11 via the first feed point A1. The first feed source 12 is used for exciting the first radiator 11 to transmit and receive at least one of LB band, MHB band, UHB band, wi-Fi band, GNSS band.

It can be appreciated that the first antenna unit 10 is disposed on the first body 410, specifically, the first matching circuit M1 and the first feed 12 are disposed on a circuit board disposed on the first body 410. The first radiator 11 is provided outside the first body 410.

Accordingly, referring to fig. 3, the second antenna unit 20 includes a second feed 22, a second matching circuit M2, and a second radiator 21. The structure, material and shape of the second radiator 21 can be referred to the first radiator 11 of the first antenna unit 10, and will not be described herein. The second radiator 21 has a second feeding point A2.

The second matching circuit M2 is disposed on the motherboard of the electronic device 1000, one end of the second matching circuit M2 is electrically connected to the second feeding point A2, and the other end of the second matching circuit M2 is electrically connected to the second feeding source 22. The second matching circuit M2 is configured to tune a frequency band supported by the second radiator 21. 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. The second feed 22 is electrically connected to said second feed point A2. The second feed 22 includes, but is not limited to, a radio frequency transceiver chip and a radio frequency front-end circuit. The second feed 22 is disposed on a motherboard of the electronic device 1000. The radio frequency signal emitted by the second feed source 22 is fed into the second radiator 21 through the second feed point A2, and the radio frequency signal can excite the second radiator 21 to generate resonance current, so as to form resonance, so as to support a frequency band corresponding to the resonance current. Of course, the second feed 22 may also receive radio frequency signals via the second feed point A2 via the second radiator 21. The second feed 22 is used for exciting the second radiator 21 to transmit and receive at least one of LB band, MHB band, UHB band, wi-Fi band, GNSS band.

It can be appreciated that the second antenna unit 20 is disposed on the second body 430, and specifically, the second matching circuit M2 and the second feed 22 are disposed on a circuit board disposed on the second body 430. The second radiator 21 is disposed outside the second body 430.

In the first embodiment of the first switching circuit configuration of the antenna assembly 100, referring to fig. 5 and 6, the number of switching circuits is one, which is defined as the first switching circuit K1. The first switch switching circuit K1 is electrically connected to the first radiator 11 of the first antenna unit 10. The position where the first switch switching circuit K1 is electrically connected to the first radiator 11 is not particularly limited in the present application. For example, the first radiator 11 is provided with a first adjustment node B1, and the first adjustment node B1 is located at one side of the first feeding point A1.

Optionally, referring to fig. 6, the first switch switching circuit K1 includes a first switch K11 and a plurality of first adjusting circuits T1. The first switching switch K11 may be a single pole, multi throw switch. The first switch K11 includes a control terminal, a connection terminal, and a selection terminal. The controller is electrically connected to the control end of the first switch K11, and the connection end of the first switch K11 is electrically connected to the first adjustment node B1, and the specific electrical connection mode may refer to the connection mode between the first matching circuit M1 and the first feeding point A1. The selection terminal of the first switching switch K11 is selectively electrically connectable to any one of the plurality of first adjusting circuits T1 under the control of the controller. The other end of each first adjusting circuit T1, which is not connected to the selection end of the first switching switch K11, is grounded.

Alternatively, the first adjusting circuit T1 may be a capacitor, or may be an inductor, or may be a device connected in series between a capacitor and an inductor, or may be a device connected in parallel between the above-mentioned serial device and a capacitor, or may be a device connected in parallel between the above-mentioned serial device and an inductor, or may be a device connected in parallel between two above-mentioned serial devices, or may be a device connected in series between two above-mentioned parallel devices, or the like. Of course, in other embodiments, the first switch switching circuit K1 may include an adjustable capacitance. The capacitance value of the adjustable capacitor is adjustable, so that the first switch switching circuit K1 is not required to be additionally arranged for switching and selecting different first adjusting circuits T1. Of course, in other embodiments, at least one first adjusting circuit T1 may be configured as an adjustable capacitor.

It can be appreciated that the impedance values of the different first adjusting circuits T1 are different, for example, a plurality of the first adjusting circuits T1 are a plurality of capacitive devices with different capacitance values, or a plurality of the first adjusting circuits T1 are a plurality of inductive devices with different inductance values. When the first switch K11 is switched to the first adjusting circuit T1 with different electrical connections under the action of the controller, the impedance value to ground of the first switch switching circuit K1 is different, so as to adjust the equivalent electrical length of the first switch switching circuit K1, further adjust the sum of the equivalent electrical length of the first switch switching circuit K1 and the electrical length of the first radiator 11, and further tune the frequency band supported by the first radiator 11.

The present application does not limit the size of the frequency band supported by the first radiator 11, so the present application does not limit the specific device and the device impedance value of the first adjusting circuit T1 specifically. For example, the frequency band supported by the first radiator 11 can be adjusted from the LB frequency band to the MHB frequency band by switching the first adjusting circuit T1 electrically connected to the first switch K11.

Further, the electronic device 1000 also includes a detector (not shown). The detector is used to detect whether the foldable body 400 is in the folded state or the unfolded state. Among them, the detector includes, but is not limited to, an angle sensor, a distance sensor, etc., which can detect an angle change or a distance change between the first body 410 and the second body 430.

The controller is electrically connected with the detector and the first switch switching circuit K1. The detector transmits the detected angle information between the first body 410 and the second body 430 to the controller, and the controller determines whether the state of the first body 410 and the second body 430 is a folded state or an unfolded state according to the angle information. For example, when the angle between the first body 410 and the second body 430 is about 180 °, the controller determines that the first body 410 and the second body 430 are in the unfolded state. When the angle between the first body 410 and the second body 430 is 0 ° or less than 10 ° (not limited to this angle), the controller determines that the first body 410 and the second body 430 are in a folded state.

When the foldable body 400 is in the unfolded state, the controller controls the first switch K11 to adjust the first adjusting circuit T1 electrically connected thereto, so that the first antenna unit 10 and the second antenna unit 20 support at least the same frequency band, for example, both support the first frequency band. Further, the first antenna unit 10 and the second antenna unit 20 may form a 2×2mimo antenna system to increase the transmission throughput and the data transmission rate for the first frequency band.

When the foldable body 400 is in the folded state, the controller controls the first switch K11 to change the first adjusting circuit T1 to which it is electrically connected, so that the first antenna unit 10 and the second antenna unit 20 support different frequency bands. For example, switching to the first adjusting circuit T1 with a reduced electrical connection impedance value corresponds to reducing the effective electrical length of the first radiator 11 and the first switching circuit K1 (the first adjusting circuit T1), thereby increasing the frequency band supported by the first antenna unit 10 to the second frequency band. The second antenna unit 20 still maintains the first frequency band, and thus, the frequency bands supported by the first antenna unit 10 and the second antenna unit 20 are different, and even if the distance between the first antenna unit 10 and the second antenna unit 20 is reduced, the transceiving of the second frequency band by the first antenna unit 10 and the transceiving of the first frequency band by the second antenna unit 20 are not affected.

The above can effectively avoid the problem of reduced antenna performance caused by reduced space between the antenna units on the foldable main body 400 in the folded state, and can ensure that the foldable main body 400 has better antenna performance in both the unfolded state and the folded state.

In the second embodiment of the antenna assembly 100, referring to fig. 7 and 8, the number of switching circuits is one, and is defined as the second switching circuit K2. The second switch switching circuit K2 is electrically connected to the second radiator 21 of the second antenna unit 20. The position where the second switch switching circuit K2 is electrically connected to the second radiator 21 is not particularly limited in the present application. For example, the second radiator 21 is provided with a second tuning point B2, and the second tuning point B2 is located at one side of the second feeding point A2.

The second switch switching circuit K2 includes a second switch K21 and a plurality of second adjusting circuits T2. The specific structure and control manner of the second switch K21 in this embodiment may refer to the specific structure and control manner of the second switch K21, which are not described herein. The specific structure and the electrical connection manner of the second adjusting circuit T2 may refer to the specific structure and the electrical connection manner of the first adjusting circuit T1, which are not described herein.

In the third embodiment of the antenna assembly 100, referring to fig. 9, the number of switch switching circuits is two, and at least one switch switching circuit includes a first switch switching circuit K1 and a second switch switching circuit K2. The first switch switching circuit K1 is electrically connected to the first radiator 11 of the first antenna unit 10. The second switch switching circuit K2 is electrically connected to the second radiator 21 of the second antenna unit 20.

Optionally, referring to fig. 6, the first switch switching circuit K1 includes a first switch K11 and a plurality of first adjusting circuits T1. Referring to fig. 8, the second switch switching circuit K2 includes a second switch K21 and a plurality of second adjusting circuits T2. The first switching circuit K1 is the same as the first switching circuit K1 in the embodiment of the first antenna switching circuit arrangement. The second switching circuit K2 may refer to the first switching circuit K1 in the embodiment of the first antenna switching circuit arrangement.

The controller is electrically connected with the detector, the first switch switching circuit K1 and the second switch switching circuit K2. The controller is configured to control the first switch switching circuit K1 and the second switch switching circuit K2 to be adjusted when the foldable main body 400 is in the folded state, so that the first antenna unit 10 and the second antenna unit 20 support different frequency bands. The controller is further configured to control the first switch switching circuit K1 and the second switch switching circuit K2 to be adjusted when the foldable main body 400 is in the unfolded state, so that the first antenna unit 10 and the second antenna unit 20 support at least the same frequency band.

For the electronic device 1000, when the foldable main body 400 is in the unfolded state, the controller controls the first switch K11 to adjust the first adjusting circuit T1 electrically connected thereto, and controls the second switch K21 to adjust the second adjusting circuit T2 electrically connected thereto, so that the first antenna unit 10 and the second antenna unit 20 both support the first frequency band. Further, the first antenna unit 10 and the second antenna unit 20 may form a 2×2mimo antenna system to increase the transmission throughput and the data transmission rate for the first frequency band.

Further, since the first radiator 11 and the second radiator 21 are electrically connected to the first switch switching circuit K1 and the second switch switching circuit K2 respectively, when the foldable main body 400 is in the unfolded state, the controller can control the first switch switching circuit K1 and the second switch switching circuit K2 to adjust the frequency band transmitted by the 2×2mimo antenna system, for example, adjust the frequency band transmitted by the 2×2mimo antenna system to be the first frequency band to be the second frequency band, so as to achieve a higher data transmission rate in a plurality of frequency bands.

Of course, in the present embodiment, the foldable main body 400 is not limited to support the same frequency band when in the unfolded state, and the first antenna unit 10 and the second antenna unit 20 may also support different frequency bands, so as to increase the number of frequency bands or the bandwidth covered by the antenna assembly 100.

When the foldable body 400 is in the folded state, since the first radiator 11 and the second radiator 21 are electrically connected to the switching circuit, the frequency band supported by the first antenna unit 10 and/or the frequency band supported by the second antenna unit 20 can be adjusted independently of each other as long as the frequency bands supported by the first antenna unit 10 and the second antenna unit 20 are different.

Optionally, the first antenna element 10 and the second antenna element 20 form at least part of a first MIMO antenna when the foldable body 400 is in the unfolded state. The first MIMO antenna is used for supporting a first frequency band. The first frequency band includes, but is not limited to, a cellular mobile communication 3G, 4G, 5G frequency band, wi-Fi frequency band, GNSS frequency band, bluetooth frequency band, UWB frequency band, and the like.

The specific forms of the first radiator 11 of the first antenna element 10 and the second radiator 21 of the second antenna element 20 are not particularly limited in the present application. The following description will take the example in which the first radiator 11 of the first antenna unit 10 is an inverted-F antenna, and the second radiator 21 of the second antenna unit 20 is an inverted-F antenna.

Optionally, referring to fig. 3, the first radiator 11 has a first free end 111, a first feeding point A1, and a first grounding end 112 sequentially disposed, where the first free end 111 is spaced from the first main body 410.

At least part of the first body 410 and the second body 430 of the foldable body 400 is made of conductive material. The first body 410 is electrically connected to the second body 430. Further optionally, at least a portion of the shaft 420 is made of a conductive material. The rotation shaft 420 is electrically connected between the first body 410 and the second body 430. The first body 410, the rotation shaft 420 and the second body 430 may serve as floors, i.e., references to the ground.

The first grounding end 112 of the first radiator 11 is electrically connected to the first body 410, i.e. grounded.

The first radiator 11 may be disposed along the extending direction of the rotation shaft 420, or the disposing direction of the first radiator 11 may be perpendicular to the extending direction of the rotation shaft 420.

Optionally, at least part of the first radiator 11 is disposed along the extension direction of the rotation shaft 420. For example, a part or all of the first radiator 11 is disposed along the extending direction of the rotation shaft 420. The present application is exemplified by the fact that all of the first radiator 11 is disposed along the extending direction (Y-axis direction) of the rotation shaft 420. Of course, in other embodiments, all of the first radiator 11 is disposed along the extending direction (X-axis direction) perpendicular to the rotation shaft 420. An embodiment in which a portion of the first radiator 11 is disposed along the extending direction of the rotation shaft 420 may be referred to the above example.

Referring to fig. 3, the second radiator 21 has a second free end 211, a second feeding point A2, and a second grounding end 212 sequentially disposed, the direction of the second grounding end 212 pointing to the second free end 211 is opposite to the direction of the first grounding end 112 pointing to the first free end 111, and the second free end 211 and the second main body 430 are spaced apart. The second grounding end 212 of the second radiator 21 is electrically connected to the second body 430, i.e., grounded.

The second radiator 21 may be disposed along the extending direction of the rotation shaft 420, or the second radiator 21 may be disposed in a direction perpendicular to the extending direction of the rotation shaft 420.

Optionally, at least part of the second radiator 21 is disposed along the extension direction of the rotation shaft 420. For example, a part or all of the second radiator 21 is disposed along the extending direction of the rotation shaft 420. The present application is exemplified by the fact that all of the second radiator 21 is disposed along the extending direction (Y-axis direction) of the rotation shaft 420. Of course, in other embodiments, all of the second radiator 21 is disposed along the extending direction (X-axis direction) perpendicular to the rotation shaft 420. An embodiment in which a portion of the second radiator 21 is disposed along the extending direction of the rotation shaft 420 may be referred to the above example.

Optionally, referring to fig. 3, the first body 410 has a first edge 411, and a second edge 412 and a third edge 413 connected to opposite sides of the first edge 411, wherein the second edge 412 and the third edge 413 are disposed opposite to each other and are connected to one side of the rotating shaft 420. The second body 430 has a fourth side 431 opposite to the first side 411, and a fifth side 432 and a sixth side 433 connected to opposite sides of the fourth side 431, wherein the fifth side 432 and the sixth side 433 are opposite to each other and are both connected to the other side of the rotating shaft 420. When the user uses the electronic device 1000, the third side 413 is closer to the top side than the second side 412, and the sixth side 433 is closer to the top side than the fifth side 432.

In the first embodiment of the first antenna element 10 and the second antenna element 20, referring to fig. 3, the first radiator 11 is disposed along the first edge 411, and the first ground end 112 may be closer to the second edge 412 than the first free end 111. The junction between the first edge 411 and the second edge 412 is defined as a first corner portion 414. The junction between the first edge 411 and the third edge 413 is defined as a third corner 415. The first grounding end 112 may be adjacent to the first corner portion 414, and the first free end 111 extends toward the side where the third side 413 is located along the Y-axis direction, that is, the first grounding end 112 to the first free end 111 of the first radiator 11 extends along the Y-axis positive direction.

Optionally, the first adjustment point B1 of the first radiator 11 is located between the first free end 111 and the first feeding point A1.

The second radiator 21 is disposed along the fourth edge 431, and the second ground end 212 may be closer to the sixth edge 433 than the second free end 211. The junction between fourth edge 431 and sixth edge 433 is defined as second corner 434. The junction between the fourth side 431 and the fifth side 432 is defined as a fourth corner 435. The second grounding end 212 may be adjacent to the second corner 434, and the second free end 211 extends along the Y-axis reversely toward the side of the fifth edge 432, i.e., the second grounding end 212 to the second free end 211 of the second radiator 21 extend along the Y-axis reversely.

Optionally, the second tuning point B2 of the second radiator 21 is located between the second free end 211 and the second feeding point A2.

Further, the first corner portion 414 and the second corner portion 434 are diagonally disposed when the foldable body 400 is in the unfolded state. The first ground terminal 112 is electrically connected to the first corner portion 414. The second ground terminal 212 is electrically connected to the second corner 434.

The envelope correlation coefficient reflects the cross correlation of the main antenna receiving complex pattern in the three-dimensional space. In reception diversity and MIMO reception, it is generally desirable that the radiation performance of the main and sub antennas can complement each other, and that the radiation patterns of the two antennas have a relatively large difference. The primary and secondary antenna patterns have no similarity, and the best effect can be achieved by receiving. The application obtains good ECC characteristics between the antenna units based on two factors of the polarization orthogonality principle of the far-field pattern of the antenna units and the difference of main radiation directions.

The main radiation directions of the receiving antennas of the MIMO antenna when the foldable body 400 is in the unfolded state are analyzed as follows:

in this embodiment, referring to fig. 10, when the first antenna unit 10 and the second antenna unit 20 are both used as receiving antennas, the current distribution on the first radiator 11 may be that the current on the first radiator 11 flows from the first free end 111 to the first ground end 112. Wherein the current on the first radiator 11 is indicated in fig. 10 by means of a dashed arrow. The first radiator 11 is coupled to the floor and excites on the floor a first longitudinal current along the first edge 411 and a first transverse current along the second edge 412 (wherein the transverse, longitudinal directions are referenced to the view in fig. 10). The direction of the first longitudinal current is opposite to the direction of the current on the first radiator 11, and the direction of the first transverse current is the direction along the second side 412 from the first ground 112. It will be appreciated that the above-described current flow has a periodicity, so the direction of the current flow is not limited to the above-described direction, but may be reversed.

It will be appreciated that the radiation pattern of the first antenna element 10 radiates primarily by the metal center (i.e., the first body 410, the shaft 420, the second body 430), the antenna far field pattern is formed by the effective radiation of current on the metal center, and the main radiation direction radiates in the direction of the current phase lag. As can be seen from fig. 10, the first antenna element 10 excites a first longitudinal current (the intensity of the first longitudinal current is larger than that of the first transverse current, so that the first longitudinal current is considered to be a current mainly affecting the main radiation direction) along the Y-axis forward direction on the metal center frame, and the phase of the first longitudinal current is lagged along the Y-axis forward direction, so that the main radiation direction of the first antenna element 10 is biased toward the Y-axis forward direction.

In this embodiment, referring to fig. 10, the current distribution on the second radiator 21 may be such that the current on the second radiator 21 flows from the second free end 211 to the second ground end 212. Wherein the current on the second radiator 21 is indicated in fig. 10 by means of a dashed arrow. The second radiator 21 is coupled to the floor and excites a second longitudinal current along the fourth side 431 and a second transverse current along the sixth side 433 (wherein the transverse, longitudinal directions are referenced to the view in the figure). The second longitudinal current is opposite to the current on the second radiator 21, and the second transverse current flows from the second ground 212 along the sixth edge 433. It will be appreciated that the above-described current flow has a periodicity, so the direction of the current flow is not limited to the above-described direction, but may be reversed.

It will be appreciated that the radiation pattern of the second antenna element 20 is mainly radiated by the metal center (i.e., the second body 430, the rotating shaft 420, the second body 430), the antenna far field pattern is formed by the effective radiation of the current on the metal center, and the main radiation direction is radiated in the direction of the current phase lag. As can be seen from fig. 10, the second antenna element 20 is excited on the metal center frame with a second longitudinal current (the intensity of the second longitudinal current is greater than that of the second transverse current, so the second longitudinal current is considered to be a current mainly affecting the main radiation direction), and the phase of the second longitudinal current is retarded along the Y-axis direction, so the main radiation direction of the second antenna element 20 is biased toward the Y-axis direction.

As can be seen from the above, the main radiation direction of the first antenna unit 10 is biased toward the Y-axis forward direction, and the main radiation direction of the second antenna unit 20 is biased toward the Y-axis reverse direction, so that when the foldable main body 400 is in the unfolded state, the main radiation direction of the first antenna unit 10 is opposite to the main radiation direction of the second antenna unit 20, and the low ECC characteristic is achieved by using the large difference between the main radiation directions of the two antenna units, so as to improve the performance of the MIMO antenna. Of course, in other embodiments, the main radiation direction of the first antenna unit 10 and the main radiation direction of the second antenna unit 20 may also intersect, for example, by a relatively large angle, so that the main radiation direction of the first antenna unit 10 and the main radiation direction of the second antenna unit 20 are greatly different to reduce the ECC coefficient.

The first antenna unit 10 and the second antenna unit 20 are designed from the angle of the main radiation direction difference design, so that the first antenna unit 10 and the second antenna unit 20 have relatively low ECC performance in an unfolding state, and the MIMO antenna is formed. Of course, in other embodiments, the structure and the positions of the first antenna unit 10 and the second antenna unit 20 may be adjusted so that the far-field polarization directions of the first antenna unit 10 and the second antenna unit 20 when the foldable main body 400 is in the unfolded state intersect or are orthogonal, so that the ECC characteristic may be reduced, and the performance of the MIMO antenna may be improved.

Optionally, referring to fig. 11, the antenna assembly 100 further includes a third antenna unit 30. The third antenna unit 30 is disposed on the first body 410, and the third antenna unit 30 and the first antenna unit 10 are respectively disposed on two adjacent sides of the foldable body 400. The third antenna element 30 forms at least part of the first MIMO antenna with the first antenna element 10 and the second antenna element 20 when the foldable body 400 is in the unfolded state; and/or, the third antenna unit 30 forms a second MIMO antenna with the first antenna unit 10 when the foldable body 400 is in the folded state, where the second MIMO antenna is used to support a second frequency band. In this way, the electronic device 1000 can form a MIMO system when in a folded state or an unfolded state, so that the frequency band for receiving and transmitting the MIMO system has a relatively high transmission rate.

Specifically, the third antenna element 30 is disposed on the third side 413 of the first body 410. When the foldable main body 400 is in the unfolded state, the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30 are respectively disposed on the right side, the left side and the top side of the foldable main body 400, and the polarization directions of far-field electric fields between the three antenna units intersect (e.g. are orthogonal), so that the ECC coefficients between the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30 are relatively low, and the first MIMO antenna with high communication efficiency is formed by the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30.

Optionally, referring to fig. 11, the third antenna unit 30 includes a third radiator 31, a third matching circuit M3, and a third feed source 32. The third radiator 31 is disposed in a direction perpendicular to the extending direction of the radiator of the first antenna element 10 (i.e., the first radiator 11). Alternatively, the first radiator 11 is disposed in the Y-axis direction, and the third radiator 31 is disposed in the X-axis direction.

The third antenna unit 30 is disposed on the first body 410. Specifically, the third matching circuit M3 and the third feed 32 are disposed on a circuit board disposed on the first body 410, and the third radiator 31 is disposed outside the third side 413 of the first body 410.

Referring to fig. 11, the third radiator 31 has a third free end 311, a third feeding point A3, and a third ground end 312, which are sequentially disposed. The third free end 311 is spaced apart from the third side 413 of the first body 410. The third feed source 32 is electrically connected to one end of the third matching circuit M3, and the other end of the third matching circuit M3 is electrically connected to the third feeding point A3. The third ground 312 is electrically connected to the first body 410.

Optionally, the third free end 311 is closer to the rotation shaft 420 than the third ground end 312. I.e. the direction in which the third free end 311 points to the third ground end 312 is the X-axis reversal.

Further, the foldable body 400 further includes a third corner 415, and the third ground 312 is electrically connected to the third corner 415.

The present embodiment analyzes the main radiation direction and the far-field electric field polarization direction of the receiving antenna as the first MIMO antenna when the first antenna unit 10, the second antenna unit 20, and the third antenna unit 30 are in the unfolded state of the foldable body 400 as follows:

in this embodiment, referring to fig. 12, when the foldable body 400 is in the unfolded state, the current distribution on the foldable body 400 and the third radiator 31 when the third radiator 31 is excited as a receiving antenna may be such that the current on the third radiator 31 flows from the third free end 311 to the third ground end 312. Wherein the current on the third radiator 31 is indicated by a dashed arrow. The third radiator 31 is coupled to the floor and excites on the floor a third longitudinal current along the first side 411 and a third transverse current along the third side 413 (wherein the transverse, longitudinal directions are referenced to the view in fig. 12). The direction of the third transverse current is opposite to the direction of the current on the third radiator 31, and the direction of the third longitudinal current is the direction flowing along the first edge 411 from the third ground 312. The solid arrow direction is the equivalent current direction. It will be appreciated that the above-described current flow has a periodicity, so the direction of the current flow is not limited to the above-described direction, but may be reversed.

When the foldable body 400 is in the unfolded state, the third antenna unit 30 is disposed adjacent to the first antenna unit 10, the third antenna unit 30 is disposed adjacent to the second antenna unit 20, and the two adjacent antenna units are designed with a low ECC coefficient based on the far field pattern polarization orthogonality principle by taking the third antenna unit 30 and the second antenna unit 20 as an illustration. Similarly, the fourth antenna element 40 and the first antenna element 10, the third antenna element 30 and the first antenna element 10, and the fourth antenna element 40 and the second antenna element 20 may also be designed according to this principle to achieve smaller ECC characteristics.

Referring to fig. 12 and 13, fig. 12 and 13 show current distribution excited on the metal center (foldable body 400) and the radiator when the third antenna unit 30 and the second antenna unit 20 are used as receiving antennas, respectively. Wherein the solid arrows indicate the direction of the equivalent current.

Referring to fig. 14 and 15, fig. 14 and 15 are far field patterns of the third antenna unit 30 and the second antenna unit 20, respectively. It can be seen from the far field pattern of the third antenna element 30 that the electric field null direction of the third antenna element 30 is located diagonally below left. It can be seen from the far field pattern of the second antenna element 20 that the electric field null direction of the second antenna element 20 is located diagonally right below. Wherein the electric field null direction may be indicative of a far field electric field polarization direction of the antenna element. The polarization direction of the far field electric field of the third antenna unit 30 is directed obliquely downward to the left, and the polarization direction of the far field electric field of the second antenna unit 20 is directed obliquely downward to the right. The electric field polarization direction of the far field of the second antenna element 20 and the electric field polarization direction of the far field of the third antenna element 30 are orthogonal, so as to realize that the envelope correlation coefficient of the second antenna element 20 and the third antenna element 30 is lower. Of course, in other embodiments, the electric field polarization direction of the far field of the second antenna element 20 and the electric field polarization direction of the far field of the third antenna element 30 may also be an intersection of non-orthogonal angles, so as to achieve a lower envelope correlation coefficient of the second antenna element 20 and the third antenna element 30.

Further, as can be seen from fig. 12, the third antenna element 30 excites a third lateral current in the X-axis forward direction (the intensity of the third lateral current is greater than that of the third longitudinal current, so the third lateral current is considered to be a current mainly affecting the main radiation direction) on the metal center frame, and the phase of the third lateral current is retarded in the X-axis forward direction, so the main radiation direction of the third antenna element 30 is biased toward the X-axis forward direction. Since the main radiation direction of the second antenna element 20 is biased to the Y-axis reverse direction. It can be seen that the relatively large angle at which the main radiation direction of the second antenna element 20 intersects the main radiation direction of the third antenna element 30, i.e. the main radiation direction of the second antenna element 20 differs from the main radiation direction of the third antenna element 30, also facilitates a relatively small ECC coefficient between the second antenna element 20 and the third antenna element 30.

Referring to fig. 16, fig. 16 is an ECC curve when the third antenna unit 30 and the antenna second antenna unit 20 are used as receiving antennas. The operating frequency band of the third antenna unit 30 and the second antenna unit 20 is selected from 0.7GHz-0.8GHz (but not limited to this frequency band). As can be seen from the ECC curves of the third antenna unit 30 and the antenna second antenna unit 20, since the third antenna unit 30 and the antenna second antenna unit 20 are different in the orthogonality of the far field electric field polarization and the main radiation direction, the ECC value is about 0.004 minimum, and the characteristics are extremely excellent.

Similarly, the far-field polarization direction of the first antenna element 10 is oriented obliquely upward left. The far field electric field polarization direction of the third antenna element 30 is directed obliquely downward to the left. The far-field polarization direction of the third antenna element 30 is orthogonal to the far-field polarization direction of the first antenna element 10 (of course, it may also intersect at a non-orthogonal angle), and thus the envelope correlation coefficients of the first antenna element 10 and the third antenna element 30 are low. Therefore, the envelope correlation coefficient between the antenna units of the antenna assembly 100 provided in the present embodiment in the unfolded state is low, which is beneficial to forming a MIMO system with good performance.

In addition, the main radiation direction of the first antenna element 10 is orthogonal to the main radiation direction of the third antenna element 30, having a relatively large angle can also promote a relatively small ECC coefficient between the first antenna element 10 and the third antenna element 30.

Therefore, by performing the position and structural design on the first antenna unit 10, the second antenna unit 20, and the third antenna unit 30, the far field electric field polarization direction of the third antenna unit 30 intersects (including is orthogonal to) the far field electric field polarization direction of the first antenna unit 10, and the far field electric field polarization direction of the third antenna unit 30 intersects (including is orthogonal to) the far field electric field polarization direction of the second antenna unit 20, so that the far field polarization directions of two adjacent antenna units intersect (including is orthogonal to) to achieve lower envelope correlation coefficients of the two adjacent antenna units, and further improve the communication performance of the MIMO system. The main radiation directions between two adjacent antenna units are different, so that the formation of lower envelope correlation coefficients is facilitated, and the communication performance of the MIMO system is improved.

Optionally, referring to fig. 13, the third antenna unit 30 further includes a third switch switching circuit K3. The third switch switching circuit K3 is electrically connected to the radiator of the third antenna unit 30.

Specifically, the radiator of the third antenna element 30 is a third radiator 31. The third radiator 31 is further provided with a third adjustment node B3. One end of the third switch switching circuit K3 is electrically connected to the third adjusting node B3, and the other end of the third switch switching circuit K3 is grounded. The specific structure of the third switch switching circuit K3 may refer to the specific structure of the first switch switching circuit K1.

The controller is configured to control the third switch switching circuit K3 to enable the first antenna unit 10 and the third antenna unit 30 to support the same frequency band and enable the first antenna unit 10 and the second antenna unit 20 to support different frequency bands when the foldable main body 400 is in the folded state, so that the electronic device 1000 forms a 2 x 2mimo antenna system with the first antenna unit 10 and the third antenna unit 30, and the transmission rate of the frequency bands supported by the first antenna unit 10 and the third antenna unit 30 is improved. Since the first antenna unit 10 and the second antenna unit 20 are located on the same side when the electronic device 1000 is in the folded state, the distance between the first antenna unit 10 and the second antenna unit 20 is small, and different frequency bands are supported by the first antenna unit 10 and the second antenna unit 20, so as to improve the isolation between the first antenna unit 10 and the second antenna unit 20, avoid the problem that the envelope correlation coefficient is relatively low when the first antenna unit 10 and the second antenna unit 20 support the same frequency band, and improve the antenna performance when the first antenna unit 10 and the second antenna unit 20 are in the folded state.

The controller is further configured to control the third switch switching circuit K3 to enable the first antenna unit 10, the second antenna unit 20, and the third antenna unit 30 to support at least the same frequency band when the foldable main body 400 is in the unfolded state. Specifically, when the electronic device 1000 is in the unfolded state, since the main radiation directions of the first antenna unit 10 and the second antenna unit 20 are opposite, the electric field polarization directions of the far fields of the first antenna unit 10 and the third antenna unit 30 are orthogonal, and the electric field polarization directions of the far fields of the second antenna unit 20 and the third antenna unit 30 are orthogonal, the envelope correlation coefficient between the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30 can be lower, which is beneficial to relatively higher communication performance of the three when forming the MIMO system. It will be appreciated that the first antenna element 10, the second antenna element 20, and the third antenna element 30 may be switchably configured to form a 2 x 2MIMO system when forming a MIMO system.

Optionally, referring to fig. 17, the antenna assembly 100 further includes a fourth antenna unit 40. The fourth antenna unit 40 is disposed on the second body 430. The fourth antenna element 40 and the first antenna element 10 are respectively located on two adjacent sides of the foldable body 400. The fourth antenna unit 40 and the third antenna unit 30 are respectively located at two opposite sides of the foldable main body 400.

Specifically, the fourth antenna element 40 is disposed on the fifth side 432 of the second body 430. When the foldable main body 400 is in the unfolded state, the first antenna unit 10, the second antenna unit 20, the third antenna unit 30 and the fourth antenna unit 40 are respectively disposed on the right side, the left side, the top side and the bottom side of the foldable main body 400, and the distances between the four antenna units are larger. Further, the method comprises the steps of. Four antenna elements are located at four corners of the foldable body 400, respectively.

Referring to fig. 17, the fourth antenna unit 40 includes a fourth radiator 41, a fourth matching circuit M4, and a fourth feed 42. The fourth radiator 41 is disposed in a direction perpendicular to the extending direction of the radiator of the first antenna element 10 (i.e., the first radiator 11). Alternatively, the first radiator 11 is disposed along the Y-axis direction. The fourth radiator 41 is disposed along the X-axis direction. The fourth antenna unit 40 is disposed on the second body 430. Specifically, the fourth matching circuit M4 and the fourth feed 42 are disposed on a circuit board disposed on the second body 430, and the fourth radiator 41 is disposed outside the fifth side 432 of the second body 430.

Referring to fig. 17, the fourth radiator 41 has a fourth free end 411, a fourth feeding point A4, and a fourth ground end 412, which are sequentially disposed. The fourth ground terminal 412 is directed in the direction opposite to the direction in which the third ground terminal 312 is directed in the third free terminal 311. The fourth free end 411 is spaced apart from the second body 430. The fourth feed 42 is electrically connected to one end of the fourth matching circuit M4, the other end of the fourth matching circuit M4 is electrically connected to the fourth feeding point A4, and the fourth ground terminal 412 is electrically connected to the second body 430.

Optionally, the fourth free end 411 is closer to the rotation axis 420 than the fourth free end 411. I.e. the direction in which the fourth free end 411 points to the fourth ground end 412 is the positive X-axis direction.

Further, the foldable body 400 further includes a fourth corner 435, and the fourth ground terminal 412 is electrically connected to the fourth corner 435.

The present embodiment analyzes the main radiation direction and the far field electric field polarization direction of the receiving antenna as the first MIMO antenna when the foldable body 400 is in the unfolded state, as follows:

in this embodiment, referring to fig. 18, when the fourth antenna unit 40 is used as the receiving antenna, the current distribution on the fourth radiator 41 and the metal middle frame (foldable main body 400) excited by the fourth antenna unit 40 may be such that the current on the fourth radiator 41 flows from the fourth free end 411 to the fourth ground end 412. The current on the fourth radiator 41 is indicated by a dashed arrow in fig. 18. The fourth radiator 41 is coupled to the floor and excites on the floor a fourth longitudinal current along a fourth side 431 and a fourth transverse current along a fifth side 432 (wherein the transverse, longitudinal directions are referenced to the view in fig. 18). The direction of the fourth transverse current is opposite to the direction of the current on the fourth radiator 41, and the direction of the fourth longitudinal current is the direction along the fourth edge 431 from the fourth ground 412. The solid arrow direction is the equivalent current direction. It will be appreciated that the above-described current flow has a periodicity, so the direction of the current flow is not limited to the above-described direction, but may be reversed.

Referring to fig. 12 and 18, fig. 12 and 18 are current distribution diagrams of the third antenna unit 30 and the fourth antenna unit 40, respectively. It can be found that the directions of the equivalent currents of the third antenna element 30 and the fourth antenna element 40 are identical and the polarization directions of the far fields are substantially identical, and in this case, if the main radiation directions of the far fields of the third antenna element 30 and the fourth antenna element 40 are identical, the ECC values of the third antenna element 30 and the fourth antenna element 40 are very high, approaching 1, and the characteristics thereof are very poor. In order to avoid the excessively high ECC value, in this embodiment, the third radiator 31 of the third antenna unit 30 is arranged at the top, the fourth radiator 41 of the fourth antenna unit 40 is arranged at the bottom, the return points (grounding ends) of the third antenna unit 30 and the fourth antenna unit 40 are correspondingly arranged in pairs, and the openings of the third radiator 31 and the fourth radiator 41 are both corresponding to the direction of the rotating shaft 420. The above design achieves that the main radiation direction of the third antenna element 30 is biased towards the X-axis forward direction. As can be seen from fig. 18, the fourth antenna element 40 is excited on the metal center frame with a fourth transverse current in the opposite direction along the X-axis (the fourth transverse current has a higher intensity than the fourth longitudinal current, so the fourth transverse current is considered to be a current mainly affecting the main radiation direction), and the phase of the fourth transverse current is retarded in the opposite direction along the X-axis, so the main radiation direction of the fourth antenna element 40 is biased toward the opposite direction along the X-axis. The main radiation directions of the third antenna element 30 and the fourth antenna element 40 are opposite (complementary), and a low ECC coefficient is achieved.

Referring to fig. 14 and 19, fig. 14 and 19 are far field patterns of the third antenna element 30 and the fourth antenna element 40, respectively. As can be seen from fig. 19, the main radiation direction of the fourth antenna element 40 is biased to the X-axis reverse direction. As can be seen from fig. 14, the main radiation direction of the third antenna element 30 is biased towards the positive X-axis. Therefore, the main radiation directions of the third antenna unit 30 and the fourth antenna unit 40 are opposite (complementary), so that the ECC coefficient is smaller when the third antenna unit 30 and the fourth antenna unit 40 operate simultaneously.

Referring to fig. 20, fig. 20 is an ECC chart of the third antenna unit 30 and the fourth antenna unit 40 as receiving antennas. The third antenna unit 30 and the fourth antenna unit 40 are selected from 0.7GHz-0.8GHz (not limited to this frequency band). As can be seen from the ECC curves of the third antenna unit 30 and the fourth antenna unit 40, the ECC of the third antenna unit 30 and the fourth antenna unit 40 in the frequency band 0.758-0.8GHz floats in the range 0.25-0.38, and the ECC values in the frequency band 0.758-0.8GHz are all smaller than 0.4, so that the antenna is very suitable for four-low-frequency MIMO system application.

Optionally, referring to fig. 17, the fourth antenna unit 40 further includes a fourth switch switching circuit K4, and the fourth switch switching circuit K4 is electrically connected to the fourth radiator 41 of the fourth antenna unit 40.

Referring to fig. 17, a fourth adjusting node B4 is further disposed on the fourth radiator 41. One end of the fourth switch switching circuit K4 is electrically connected to the fourth adjusting node B4, and the other end of the fourth switch switching circuit K4 is grounded. The specific structure of the fourth switch switching circuit K4 may refer to the specific structure of the first switch switching circuit K1.

Referring to fig. 17, the controller is further configured to control the fourth switch switching circuit K4 to adjust the first antenna unit 10, the second antenna unit 20, the third antenna unit 30, and the fourth antenna unit 40 to support at least the same frequency band when the foldable main body 400 is in the unfolded state. Specifically, when the electronic device 1000 is in the unfolded state, the main radiation directions of the first antenna unit 10 and the second antenna unit 20 located at the diagonal positions are opposite, the electric field polarization directions of the far fields of the first antenna unit 10 and the third antenna unit 30 located at the adjacent positions are orthogonal, the electric field polarization directions of the far fields of the first antenna unit 10 and the fourth antenna unit 40 located at the adjacent positions are orthogonal, and the electric field polarization directions of the far fields of the first antenna unit 10 and the fourth antenna unit 40 located at the adjacent positions are orthogonal, so that the envelope correlation coefficients between the first antenna unit 10, the second antenna unit 20, the third antenna unit 30 and the fourth antenna unit 40 are low, and the communication performance of the four antenna units is relatively high when the 4×4mimo system is formed.

Since the first antenna unit 10 to the fourth antenna unit 40 are all provided with the switch switching circuits, a 4×4mimo system is formed from the first antenna unit 10 to the fourth antenna unit 40, and the operating frequency band of the 4×4mimo system can be tuned, for example, from one low frequency band to another low frequency band, by adjusting the switch switching circuits on the first antenna unit 10 to the fourth antenna unit 40, so as to increase the frequency band width supported by the 4×4mimo system.

The controller is configured to control the fourth switch switching circuit K4 to enable the first antenna unit 10 and the third antenna unit 30 to support the same frequency band, enable the first antenna unit 10 and the second antenna unit 20 to support different frequency bands, and enable the second antenna unit 20 and the fourth antenna unit 40 to support the same frequency band when the foldable main body 400 is in the folded state. So that the electronic device 1000 is in a folded state, the first antenna unit 10 and the third antenna unit 30 form a 2×2mimo antenna system, the second antenna unit 20 and the fourth antenna unit 40 form another 2×2mimo antenna system, so as to improve the transmission rate of the frequency band supported by the first antenna unit 10 and the third antenna unit 30, and improve the transmission rate of the frequency band supported by the second antenna unit 20 and the fourth antenna unit 40. Since the first antenna unit 10 and the second antenna unit 20 are located on the same side when the electronic device 1000 is in the folded state, and the correlation is poor when the same frequency band is supported, by setting that the first antenna unit 10 and the second antenna unit 20 support different frequency bands, the isolation between the first antenna unit 10 and the second antenna unit 20 is improved, the problem that the envelope correlation coefficient is relatively low when the first antenna unit 10 and the second antenna unit 20 support the same frequency band is avoided, and the antenna performance when the first antenna unit 10 and the second antenna unit 20 are in the folded state when the electronic device 1000 is improved.

In this way, the electronic device 1000 can form a MIMO system when in a folded state or an unfolded state, so that the frequency band for receiving and transmitting the MIMO system has a relatively high transmission rate.

Optionally, the first frequency band includes an LB frequency band. One of the second frequency band and the third frequency band includes an LB frequency band, and the other includes an MHB frequency band. Specifically, when the electronic device 1000 is in the unfolded state, the four antenna units form a 4×4mimo antenna system, and the frequency band supported by the 4×4mimo antenna system includes an LB frequency band, for example, NR N28 (703-788 MHz) \n5\n8, but is not limited to this frequency band and so on. Of course, the operating frequency band of the first feed 12 includes not only the low frequency band, but in other embodiments, the first frequency band may also cover a medium-high frequency band (1-6 GHz) LTE/NR system.

When the electronic device 1000 is in the folded state, the first antenna unit 10 and the third antenna unit 30 form a second MIMO antenna, and the second antenna unit 20 and the fourth antenna unit 40 form a third MIMO antenna, where the second MIMO antenna may support an LB frequency band and the third MIMO antenna may support an MHB frequency band; alternatively, the third MIMO antenna may support the LB frequency band and the second MIMO antenna may support the MHB frequency band.

The low frequency band, such as the N28 (703-733 MHz uplink and 758-788MHz downlink), has the advantages of long coverage distance, good stability and the like, and is very important for the 5G communication system to re-plough the low frequency band communication. Because the frequency band belongs to a lower frequency band, for the size of the mobile phone, the space occupied by the antenna is very large, especially when a 4 x 4MIMO antenna supporting the N28 frequency band is designed, the environment is very compact, the envelope correlation coefficient between antenna units is poor, and the communication performance of the MIMO system can be affected by about 0.7. The method and the device for improving the space correlation among the multiple antennas based on improving the performance of the MIMO system improve the rank of the MIMO channel matrix, so that the throughput rate of the communication system is optimized.

The antenna assembly 100 provided in this embodiment includes the first antenna unit 10 to the fourth antenna unit 40, and the first antenna unit 10, the second antenna unit 20, the third antenna unit 30, and the fourth antenna unit 40 form the first MIMO antenna when the foldable body 400 is in the unfolded state. The fourth antenna unit 40 is adjacent to the first antenna unit 10 and the second antenna unit 20, and is disposed diagonally to the third antenna unit 30. It can be seen from the electric field distribution of the fourth antenna element 40 on the floor that the far field electric field polarization direction of the fourth antenna element 40 intersects, in particular is orthogonal to, the far field electric field polarization direction of the first antenna element 10. It can be seen from the electric field distribution of the fourth antenna element 40 on the floor that the far field electric field polarization direction of the fourth antenna element 40 intersects, in particular is orthogonal to, the far field electric field polarization direction of the second antenna element 20. Thus, the envelope correlation coefficients between the fourth antenna element 40 and the first antenna element 10 and the second antenna element 20 are relatively small. The main radiation direction of the fourth antenna element 40 may be determined to be biased toward the X-axis direction according to the direction of the phase lag of the main intensity current of the fourth antenna element 40 in the metal middle frame, the main radiation direction of the third antenna element 30 may be determined to be biased toward the X-axis direction according to the direction of the phase lag of the main intensity current of the third antenna element 30 in the metal middle frame, and the main radiation directions of the third antenna element 30 and the fourth antenna element 40 are opposite or have relatively large angles, which is beneficial to the fact that the envelope correlation coefficients of the fourth antenna element 40 and the third antenna element 30 are relatively small, and is beneficial to improving the communication performance of the MIMO antenna system.

Referring to fig. 21, fig. 21 is an ECC chart between each antenna unit of the antenna assembly 100 shown in fig. 17 in an unfolded state. It can be seen that in the frequency band of 0.75-0.8GHz, the ECC coefficient between the antenna units is smaller than 0.4, and the method can be applied to a low-frequency 4 x 4mimo system.

Referring to fig. 22, when the foldable body 400 is in the folded state, since the first antenna unit 10 and the second antenna unit 20 are located at the same side of the foldable body 400. If the first antenna unit 10 and the second antenna unit 20 form a MIMO antenna and operate simultaneously, the isolation between the first antenna unit 10 and the second antenna unit 20 may be very poor, resulting in an extremely poor ECC value, so that the first antenna unit 10 and the second antenna unit 20 cannot operate simultaneously. At this time, the first antenna unit 10 or the second antenna unit 20 may be switched to a different frequency band by using the first switch switching circuit K1 and/or the second switch switching circuit K2, for example, the first antenna unit 10 operates at a low frequency (less than or equal to 1 GHz), and the second antenna unit 20 operates at a middle-high frequency band (greater than 1 GHz).

Further, the fourth antenna unit 40 and the second antenna unit 20 or the third antenna unit 30 are controlled to form a 2×2mimo antenna. For example, the second antenna element 20 and the fourth antenna element 40 form a 2×2mimo antenna, and the first antenna element 10 and the third antenna element 30 may form another 2×2mimo antenna. The second antenna element 20 is relatively far from the fourth antenna element 40, and the far field electric field polarization direction of the second antenna element 20 intersects the far field electric field polarization direction of the fourth antenna element 40, and has a relatively low ECC coefficient, which can form a 2 x 2mimo antenna. The far field electric field polarization direction of the first antenna element 10 intersects the far field electric field polarization direction of the third antenna element 30, and has a relatively low ECC coefficient, and the two 2 x 2mimo antennas support different frequency bands, for example, one 2 x 2mimo antenna supports a low frequency, and the other 2 x 2mimo antenna supports a medium-high frequency, so as to improve the correlation between the second antenna element 20 and the first antenna element 10.

Referring to fig. 23, fig. 23 is an ECC chart showing the operation of the first antenna unit 10 and the third antenna unit 30 in the middle-high band and the operation of the fourth antenna unit 40 and the second antenna unit 20 in the low band when the foldable main body 400 is in the folded state. It can be seen that, in the 0.758GHz band, the ECC value of the fourth antenna unit 40 and the second antenna unit 20 is about 0.25, and the good ECC performance is provided.

Similarly, the fourth antenna unit 40 and the second antenna unit 20 may be switched to the medium-high frequency operation by using a switching circuit, so as to achieve better ECC characteristics of the first antenna unit 10 and the third antenna unit 30 in the low frequency band.

In the above embodiments, the free end openings of the first antenna element 10, the third antenna element 30, the second antenna element 20, and the fourth antenna element 40 are all disposed in the counterclockwise direction.

In the second embodiment of the arrangement of the first radiator 11 and the second radiator 21, the present embodiment is mainly different from the previous embodiment in that: referring to fig. 24, the free end openings of the first antenna element 10, the third antenna element 30, the second antenna element 20, and the fourth antenna element 40 may also be disposed in a clockwise direction.

Alternatively, the first radiator 11 is disposed along the first edge 411 of the first body 410, and the first ground end 112 may be closer to the third edge 413 with respect to the first free end 111. Further, the first grounding end 112 may be disposed at the third corner 415, and the first grounding end 112 to the first free end 111 are disposed along the Y-axis opposite direction. The far-field polarization direction of the first antenna element 10 is the left diagonal down direction. The main radiation direction of the first antenna element 10 is biased towards the Y-axis positive direction.

Optionally, the second radiator 21 is disposed along the fourth edge 431 of the second body 430, and the second ground end 212 may be closer to the fifth edge 432 relative to the second free end 211. Further, the second grounding end 212 may be disposed at the fourth corner 435, and the second grounding end 212 to the second free end 211 are disposed reversely along the Y-axis. The far field polarization direction of the second antenna element 20 is a right oblique upward direction. The main radiation direction of the second antenna element 20 is biased in the opposite Y-axis direction.

Optionally, the third radiator 31 is disposed along the second edge 412 of the first body 410, and the third ground end 312 may be closer to the first edge 411 than the third free end 311. Further, the third grounding end 312 may be disposed at the first corner portion 414, and the third grounding end 312 to the third free end 311 are disposed along the positive X-axis direction. The far-field polarization direction of the third antenna element 30 is the upper left-hand oblique direction. The main radiation direction of the third antenna element 30 is biased in the opposite direction of the X-axis.

Optionally, the fourth radiator 41 is disposed along the sixth side 433 of the second body 430, and the fourth ground terminal 412 may be closer to the fourth side 431 than the fourth free terminal 411. Further, the fourth grounding end 412 may be disposed at the second corner 434, and the fourth grounding end 412 to the fourth free end 411 are disposed along the X-axis in opposite directions. The far-field polarization direction of the fourth antenna element 40 is diagonally right downward. The main radiation direction of the fourth antenna element 40 is biased to the positive X-axis direction.

As can be seen from the above, when the electronic device 1000 is in the unfolded state, the main radiation directions of the first antenna unit 10 and the second antenna unit 20 located at the diagonal positions are opposite, the electric field polarization directions of the far fields of the first antenna unit 10 and the third antenna unit 30 located at the adjacent positions are orthogonal, the electric field polarization directions of the far fields of the second antenna unit 20 and the third antenna unit 30 located at the adjacent positions are orthogonal, the electric field polarization directions of the far fields of the first antenna unit 10 and the fourth antenna unit 40 located at the adjacent positions are orthogonal, and the electric field polarization directions of the far fields of the second antenna unit 20 and the fourth antenna unit 40 located at the adjacent positions are orthogonal, so that the envelope correlation coefficients between the first antenna unit 10, the second antenna unit 20, the third antenna unit 30 and the fourth antenna unit 40 are both lower, which is beneficial to the communication performance of the four when forming the 2×2mimo system is relatively high.

According to the electronic equipment 1000 provided by the application, a new antenna architecture is designed on the foldable electronic equipment 1000, and based on the improvement of the performance of the MIMO system, the spatial correlation among multiple antenna units is improved, so that the rank of a MIMO channel matrix is improved, and the throughput rate of a communication system is optimized.

The four corner positions on the folding electronic equipment 1000 are respectively provided with four IFA antennas, the opening directions of the four antenna units are sequentially and reversely/clockwise arranged by utilizing the principle of orthogonal polarization directions of far-field electric fields and the principle of different main radiation directions, so that extremely low ECC characteristics under orthogonal polarization and the ECC characteristics with relatively good opposite main radiation patterns are realized, the ECC coefficients of the antenna units of the second antenna unit 20 in the unfolded state are relatively low, the antenna units can be better suitable for a 2 x 2MIMO communication system, and when in the folded state, the proper antenna unit pairs are switched by utilizing a switch switching circuit, so that the ECC value of a certain antenna unit pair is relatively low, and the antenna unit pair is suitable for application to the 2 x 2MIMO communication system. The four-antenna MIMO architecture can be applied to a low-frequency gold frequency band to realize the four-low-frequency antenna MIMO architecture.

The embodiment of the present application further provides a control method of the electronic device 1000, which is applied to the electronic device 1000 described in any one of the foregoing embodiments, referring to fig. 25, and the method at least includes the following steps:

110. The target form of the foldable body 400 of the electronic device 1000 is obtained. Wherein the target form comprises a folded state and an unfolded state.

The electronic device 1000 includes a processor and a detector, where the detector is configured to obtain an angle between the first body 410 and the second body 430 of the foldable body 400, so as to obtain a target shape of the electronic device 1000. For example, the detector detects that the angle between the first body 410 and the second body 430 of the foldable body 400 is 180 ° (not limited to this data, which is merely an example), and determines that the foldable body 400 of the electronic device 1000 is in the unfolded state; the detector detects that the angle between the first body 410 and the second body 430 of the foldable body 400 is less than or equal to 5 ° (not limited to this data, which is merely an example), and determines that the foldable body 400 of the electronic device 1000 is in the folded state. The detector may be an angle sensor, a position sensor, a distance sensor, etc.

120. The first antenna unit 10 of the electronic device 1000 and the second antenna unit 20 of the electronic device 1000 are determined to be in the first operation mode according to the folded state. The first operation mode is that the first antenna unit 10 and the second antenna unit 20 support different frequency bands. Wherein the first antenna unit 10 and the second antenna unit 20 are disposed on the same side of the foldable body 400 when the foldable body 400 is in a folded state.

The first antenna unit 10 and the second antenna unit 20 are two diagonally arranged antenna units, and the first antenna unit 10 and the second antenna unit 20 are disposed on the same side of the foldable main body 400 when the foldable main body 400 is in a folded state, so that the distance between the first antenna unit 10 and the second antenna unit 20 is relatively short, and if the first antenna unit 10 and the second antenna unit 20 form a 2×2mimo antenna, the envelope correlation coefficient between the antenna units is relatively large, which further results in poor communication performance of the 2×2mimo antenna system.

Based on this, in the present embodiment, the first antenna unit 10 and the second antenna unit 20 are determined to be in the first working mode in the folded state, that is, the first antenna unit 10 and the second antenna unit 20 support different frequency bands, on the one hand, the first antenna unit 10 and the second antenna unit 20 do not form a 2×2mimo antenna, and the communication performance of the 2×2mimo antenna system is not poor; on the other hand, the frequency bands supported by the first antenna unit 10 and the second antenna unit 20 are different, so that mutual interference is small in a situation that the distance between the first antenna unit and the second antenna unit is close in time.

130. And determining that the first antenna unit 10 and the second antenna unit 20 are in a second working mode according to the unfolding state. Wherein, the second operation mode is that the first antenna unit 10 and the second antenna unit 20 support at least the same frequency band. Wherein the first antenna unit 10 and the second antenna unit 20 are respectively disposed at both sides of the foldable body 400 when the foldable body 400 is in the unfolded state.

When the electronic device 1000 is in the unfolded state, the distance between the first antenna unit 10 and the second antenna unit 20 is relatively larger, and the main radiation directions of the first antenna unit 10 and the second antenna unit 20 are opposite or have relatively larger angles, so that a relatively smaller envelope correlation coefficient is beneficial to between the first antenna unit 10 and the second antenna unit 20, and a 2 x 2mimo antenna is beneficial to be formed by the first antenna unit 10 and the second antenna unit 20, so that the data transmission rate is increased.

It will be appreciated that the target configuration of the collapsible body 400 also includes a flipped state between an unfolded state and a folded state. Taking the folding angle of the foldable body 400 as 0 ° -180 °, the folding state is such that the angle between the first body 410 and the second body 430 is 0 ° (including 0 °) -5 ° (excluding 5 °); the unfolded state is such that the angle between the first body 410 and the second body 430 is 175 ° (including 175 °) -180 ° (including 180 °); the flipped state is such that the angle between the first body 410 and the second body 430 is 5 ° (including 5 °) -175 ° (excluding 175 °). When the foldable body 400 of the electronic device 1000 is in the flipped state, the first antenna unit 10 and the second antenna unit 20 may be in the first operation mode or the second operation mode.

Optionally, when the antenna assembly 100 of the electronic device 1000 further comprises a third antenna element 30, the third antenna element 30 is disposed adjacent to the first antenna element 10, and the third antenna element 30 is disposed adjacent to the second antenna element 20.

Referring to fig. 26, after step 120, the method further includes:

140. according to the folded state, it is determined that the first antenna unit 10 of the electronic device 1000 and the third antenna unit 30 of the electronic device 1000 are in a third working mode, where the third working mode is that the first antenna unit 10 and the third antenna unit 30 support at least the same frequency band, so as to facilitate forming a 2×2mimo antenna, and further increase the data transmission rate. The third antenna element 30 is disposed adjacent to the first antenna element 10, and the third antenna element 30 is disposed adjacent to the second antenna element 20.

The third antenna unit 30 and the second antenna unit 20 have a certain interval in the folded state, and the polarization directions of the far-field electric fields intersect, which is favorable for forming a small envelope correlation coefficient and favorable for the communication performance of the 2 x 2mimo antenna.

150. And determining that the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30 are in a fourth working mode according to the unfolding state, wherein the fourth working mode is to select any two of the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30 to support at least the same frequency band so as to be beneficial to forming a 2 x 2MIMO antenna and further increase the data transmission rate.

When the foldable body 400 of the electronic device 1000 is in the flipped state, the first antenna unit 10, the second antenna unit 20, and the third antenna unit 30 may be in the third operation mode or the fourth operation mode.

When the electronic device 1000 is in the unfolded state, the distances between the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30 are relatively larger, the main radiation directions of the first antenna unit 10 and the second antenna unit 20 are opposite or have relatively larger angles, the far-field electric field polarization directions between the first antenna unit 10 and the third antenna unit 30 are orthogonal, and the far-field electric field polarization directions between the second antenna unit 20 and the third antenna unit 30 are orthogonal, so that the first antenna unit 10 and the second antenna unit 20 have relatively smaller envelope correlation coefficients, and the first antenna unit 10, the second antenna unit 20 and the third antenna unit 30 can form a MIMO antenna, thereby increasing the data transmission rate.

Optionally, when the antenna assembly 100 of the electronic device 1000 further includes the fourth antenna element 40, the fourth antenna element 40 is disposed adjacent to the first antenna element 10, the fourth antenna element 40 is disposed adjacent to the second antenna element 20, and the fourth antenna element 40 is disposed diagonally to the third antenna element 30.

Referring to fig. 27, after step 140, the method further includes:

160. according to the folded state, it is determined that the second antenna unit 20 of the electronic device 1000 and the fourth antenna unit 40 of the electronic device 1000 are in a fifth working mode, where the fifth working mode is that the second antenna unit 20 and the fourth antenna unit 40 support at least the same frequency band. Wherein the fourth antenna unit 40 is disposed diagonally to the third antenna unit 30.

The first antenna unit 10 and the third antenna unit 30 support at least the same frequency band, so as to facilitate forming a first 2 x 2mimo antenna, thereby increasing the data transmission rate. The second antenna unit 20 and the fourth antenna unit 40 are beneficial to forming a second 2 x 2mimo antenna, thereby increasing the data transmission rate. Wherein the first 2 x 2mimo antenna is different from the frequency band supported by the second 2 x 2mimo antenna.

The third antenna unit 30 and the second antenna unit 20 have a certain interval in the folded state, and the polarization directions of the far-field electric fields intersect, which is favorable for forming a small envelope correlation coefficient and favorable for the communication performance of the 2 x 2mimo antenna. The first antenna unit 10 and the fourth antenna unit 40 have a certain interval in the folded state, and the polarization directions of the far-field electric fields are intersected, so that a small envelope correlation coefficient is formed, and the communication performance of the 2 x 2mimo antenna is facilitated.

170. According to the unfolding state, the first antenna unit 10, the second antenna unit 20, the third antenna unit 30, and the fourth antenna unit 40 are determined to be in a sixth working mode, where the sixth working mode is to select the first antenna unit 10, the second antenna unit 20, the third antenna unit 30, and the fourth antenna unit 40 to support at least the same frequency band, so as to facilitate forming a 2×2mimo antenna, and further increase the data transmission rate.

When the electronic device 1000 is in the unfolded state, the distances between the first antenna unit 10, the second antenna unit 20, the third antenna unit 30 and the fourth antenna unit 40 are relatively larger, and the main radiation directions of the first antenna unit 10 and the second antenna unit 20 are opposite or have relatively larger angles, the main radiation directions of the third antenna unit 30 and the fourth antenna unit 40 are opposite or have relatively larger angles, the far field electric field polarization directions between the first antenna unit 10 and the third antenna unit 30 are orthogonal, the far field electric field polarization directions between the second antenna unit 20 and the third antenna unit 30 are orthogonal, the far field electric field polarization directions between the first antenna unit 10 and the fourth antenna unit 40 are orthogonal, and the far field electric field polarization directions between the second antenna unit 20 and the fourth antenna unit 40 are orthogonal, so that the two antenna units are beneficial to have relatively smaller envelope correlation coefficients, and the first antenna unit 10, the second antenna unit 20, the third antenna unit 30 and the fourth antenna unit 40 are beneficial to form 2 x 2mimo antennas, and further increase the data transmission rate.

When the foldable body 400 of the electronic device 1000 is in the flipped state, the first antenna unit 10, the second antenna unit 20, the third antenna unit 30, the fourth antenna unit 40 may be in the fifth operation mode, or the sixth operation mode.

While the foregoing is directed to embodiments of the present application, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the application, and such changes and modifications are intended to be included within the scope of the application.

Claims

1. An electronic device, comprising:

2. The electronic device of claim 1, wherein the foldable body comprises a first body, a rotating shaft, and a second body connected in sequence, the first antenna unit and the second antenna unit are respectively disposed on the first body and the second body, the first body and the second body are stacked when the foldable body is in the folded state, and the first body and the second body are relatively flattened when the foldable body is in the unfolded state.

3. The electronic device of claim 2, wherein the first antenna unit and the second antenna unit each comprise a radiator, the antenna assembly further comprises a controller, at least one switch switching circuit electrically connected to the controller, the at least one switch switching circuit electrically connected to the radiator of the first antenna unit and/or the radiator of the second antenna unit, the switch switching circuit configured to adjust the frequency band supported by the first antenna unit and/or the second antenna unit when the foldable body is in the folded state under the action of the controller, such that the first antenna unit and the second antenna unit support different frequency bands, respectively.

4. The electronic device of claim 3, wherein the switch switching circuit comprises a switch and a plurality of adjusting circuits, a control end of the switch is electrically connected to the controller, a connection end of the switch is electrically connected to the radiator of the first antenna unit and/or the radiator of the second antenna unit, a selection end of the switch is selectively electrically connected to one of the adjusting circuits, and another end of the adjusting circuits is grounded.

5. The electronic device of claim 3, wherein the at least one switch switching circuit comprises a first switch switching circuit and a second switch switching circuit, the first switch switching circuit electrically connected to the radiator of the first antenna element,

the second switch switching circuit is electrically connected with the radiator of the second antenna unit;

the electronic device further comprises a detector, wherein the detector is used for detecting that the foldable main body is in the folded state or the unfolded state, the controller is electrically connected with the detector, the first switch switching circuit and the second switch switching circuit, and the controller is used for controlling the first switch switching circuit and the second switch switching circuit to be adjusted when the foldable main body is in the folded state so that the first antenna unit and the second antenna unit support different frequency bands; the controller is further configured to control the foldable main body to adjust the first switch switching circuit and the second switch switching circuit when the foldable main body is in the unfolded state, so that the first antenna unit and the second antenna unit support at least the same frequency band.

6. The electronic device of any of claims 3-5, wherein the first antenna element and the second antenna element form at least part of a first MIMO antenna when the foldable body is in the unfolded state, the first MIMO antenna being configured to support a first frequency band.

7. The electronic device of claim 6, wherein the first antenna element and the second antenna element intersect or are opposite a main radiating direction when the foldable body is in the unfolded state; and/or the first antenna element and the second antenna element intersect or are orthogonal to a far field electric field polarization direction when the foldable body is in the unfolded state.

8. The electronic device of claim 7, wherein the electronic device comprises a memory device,

the first antenna unit comprises a first radiator, a first matching circuit and a first feed source, wherein the first radiator is provided with a first free end, a first feed point and a first grounding end which are sequentially arranged, the first free end and the first main body are arranged at intervals, the first feed source is electrically connected with one end of the first matching circuit, and the other end of the first matching circuit is electrically connected with the first feed point;

The second antenna unit comprises a second radiator, a second matching circuit and a second feed source, wherein the second radiator is provided with a second free end, a second feed point and a second grounding end which are sequentially arranged, the second grounding end points to the second free end in the direction opposite to the first grounding end in the direction opposite to the first free end, the second free end is arranged at intervals with the second main body, the second feed source is electrically connected with one end of the second matching circuit, and the other end of the second matching circuit is electrically connected with the second feed point.

9. The electronic device of claim 8, wherein the foldable body comprises a first corner portion and a second corner portion, the first corner portion and the second corner portion being diagonally disposed when the foldable body is in the unfolded state; the first grounding end is electrically connected with the first corner part; the second ground terminal is electrically connected to the second corner portion.

10. The electronic device of claim 8, wherein the first radiator and the second radiator are both disposed along an extending direction of the rotation shaft; or the setting directions of the first radiator and the second radiator are perpendicular to the extending direction of the rotating shaft.

11. The electronic device of claim 6, wherein the antenna assembly further comprises a third antenna element disposed on the first body, the third antenna element and the first antenna element being positioned on adjacent sides of the foldable body, respectively, the third antenna element and the first antenna element and the second antenna element forming at least part of the first MIMO antenna when the foldable body is in the unfolded state; and/or the third antenna unit and the first antenna unit form a second MIMO antenna when the foldable main body is in the folded state, wherein the second MIMO antenna is used for supporting a second frequency band.

12. The electronic device of claim 11, wherein a far field electric field polarization direction of the third antenna element intersects a far field electric field polarization direction of the first antenna element, the far field electric field polarization direction of the third antenna element intersecting a far field electric field polarization direction of the second antenna element.

13. The electronic device of claim 11, wherein the third antenna unit includes a third radiator, a third matching circuit, and a third feed source, the third radiator is disposed in a direction perpendicular to an extending direction of the radiator of the first antenna unit, the third radiator has a third free end, a third feed point, and a third ground end that are sequentially disposed, the third free end is disposed at a distance from the first main body, the third feed source is electrically connected to one end of the third matching circuit, the other end of the third matching circuit is electrically connected to the third feed point, and the third ground end is electrically connected to the first main body.

14. The electronic device of claim 13, wherein the foldable body further comprises a third corner portion, the third ground electrically connected to the third corner portion.

15. The electronic device of claim 11, wherein the third antenna element further comprises a third switch switching circuit electrically connected to a radiator of the third antenna element;

the controller is used for controlling the third switch switching circuit to be adjusted when the foldable main body is in the folded state, so that the first antenna unit and the third antenna unit support the same frequency band, and the first antenna unit and the second antenna unit support different frequency bands; the controller is further configured to control the foldable main body to adjust the third switch circuit when the foldable main body is in the unfolded state, so that the first antenna unit, the second antenna unit and the third antenna unit support at least the same frequency band.

16. The electronic device of claim 13, wherein the antenna assembly further comprises a fourth antenna element disposed on the second body, the fourth antenna element and the first antenna element being disposed on adjacent sides of the foldable body, the fourth antenna element and the third antenna element being disposed on opposite sides of the foldable body, the fourth antenna element and the first antenna element, the second antenna element, and the third antenna element forming the first MIMO antenna when the foldable body is in the unfolded state, the fourth antenna element and the second antenna element or the third antenna element forming a third MIMO antenna when the foldable body is in the folded state, wherein the third MIMO antenna is configured to support a third frequency band.

17. The electronic device of claim 16, wherein the first frequency band comprises an LB frequency band; one of the second frequency band and the third frequency band includes an LB frequency band, and the other includes an MHB frequency band.

18. The electronic device of claim 16, wherein a far field electric field polarization direction of the fourth antenna element intersects a far field electric field polarization direction of the first antenna element, the far field electric field polarization direction of the fourth antenna element intersecting a far field electric field polarization direction of the second antenna element.

19. The electronic device of claim 16, wherein the fourth antenna unit includes a fourth radiator, a fourth matching circuit, and a fourth feed source, the fourth radiator is disposed in a direction perpendicular to an extension direction of the radiator of the first antenna unit, the fourth radiator has a fourth free end, a fourth feed point, and a fourth ground end that are sequentially disposed, a direction of the fourth ground end pointing to the fourth free end is opposite to a direction of the third ground end pointing to the third free end, the fourth free end is disposed at an interval from the second body, the fourth feed source is electrically connected to one end of the fourth matching circuit, the other end of the fourth matching circuit is electrically connected to the fourth feed point, and the fourth ground end is electrically connected to the second body.

20. The electronic device of claim 19, wherein the foldable body further comprises a fourth corner portion, the fourth ground electrically connected to the fourth corner portion.

21. The electronic device of any one of claims 16-20, wherein the fourth antenna element further comprises a fourth switching circuit electrically connected to a radiator of the fourth antenna element;

the controller is configured to control the foldable main body to adjust the fourth switching circuit when in the folded state, so that the first antenna unit and the third antenna unit support the same frequency band, the first antenna unit and the second antenna unit support different frequency bands, and the second antenna unit and the fourth antenna unit support the same frequency band; the controller is further configured to control the foldable main body to adjust the fourth switch circuit when in the unfolded state, so that the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit support at least the same frequency band.

22. A control method of an electronic device, characterized by being applied to an electronic device, the method comprising:

determining a first antenna unit of the electronic equipment and a second antenna unit of the electronic equipment as a first working mode according to the folding state, wherein the first working mode is that the first antenna unit and the second antenna unit support different frequency bands; the first antenna unit and the second antenna unit are arranged on the same side of the foldable main body when the foldable main body is in a folded state, and the first antenna unit and the second antenna unit are respectively arranged on two opposite sides of the foldable main body when the foldable main body is in an unfolded state;

and determining the first antenna unit and the second antenna unit to be in a second working mode according to the unfolding state, wherein the second working mode is that the first antenna unit and the second antenna unit support at least the same frequency band.

23. The method of claim 22, wherein after determining that the first antenna unit of the electronic device and the second antenna unit of the electronic device are in the first operating mode according to the folded state, further comprising:

Determining a first antenna unit of the electronic equipment and a third antenna unit of the electronic equipment to be in a third working mode according to the folding state, wherein the third working mode is that the first antenna unit and the third antenna unit support the same frequency band, the third antenna unit is arranged adjacent to the first antenna unit, and the third antenna unit is arranged adjacent to the second antenna unit;

and determining the first antenna unit, the second antenna unit and the third antenna unit to be in a fourth working mode according to the unfolding state, wherein the fourth working mode is to select any two of the first antenna unit, the second antenna unit and the third antenna unit to support at least the same frequency band.

24. The method of claim 23, wherein after determining that the first antenna unit of the electronic device and the third antenna unit of the electronic device are in the third operating mode according to the folded state, further comprising:

determining a second antenna unit of the electronic equipment and a fourth antenna unit of the electronic equipment to be in a fifth working mode according to the folding state, wherein the fifth working mode is that the second antenna unit and the fourth antenna unit support the same frequency band; wherein the fourth antenna unit and the third antenna unit are diagonally arranged;

And determining that the first antenna unit, the second antenna unit, the third antenna unit and the fourth antenna unit are in a sixth working mode according to the unfolding state, wherein the sixth working mode is to select the first antenna unit, the second antenna unit, the third antenna unit and the fourth antenna unit to support at least the same frequency band.