CN118249861A

CN118249861A - Foldable electronic equipment and antenna switching circuit

Info

Publication number: CN118249861A
Application number: CN202211666817.3A
Authority: CN
Inventors: 王磊; 查鹏; 庞东; 黄波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2024-06-25
Also published as: WO2024131606A1

Abstract

The embodiment of the application provides foldable electronic equipment and an antenna switching circuit, wherein the electronic equipment comprises three foldable parts, and partial frames of the three foldable parts are used as radiators of antenna units in a MIMO system, so that the MIMO system has good radiation characteristics under any form of the foldable electronic equipment. The foldable electronic device may have the first antenna unit and the second antenna unit located in the first housing, and the fifth antenna unit and the sixth antenna unit located in the third housing as antenna units in the MIMO system when in the unfolded state and the folded state. In the partially unfolded state, the foldable electronic device can be used as an antenna unit in the MIMO system by the first antenna unit and the second antenna unit which are positioned in the first shell, and the third antenna unit and the fourth antenna unit which are positioned in the second shell.

Description

Foldable electronic equipment and antenna switching circuit

Technical Field

Embodiments of the present application relate to the field of electronic devices, and more particularly, to a foldable electronic device and an antenna switching circuit.

Background

The foldable electronic device is switchable between a folded state and an unfolded state. When the foldable electronic device is in a folded state, the occupied space of the foldable electronic device is relatively small; when the foldable electronic device is in the unfolded state, the foldable electronic device may display a relatively large screen to increase the viewable range of the user. Foldable electronic devices are a great direction of current technical development, but the foldable electronic devices have a folding state and an unfolding state at the same time, so that electromagnetic environments in the electronic devices are more complex.

In the fifth generation (5th generation,5G) wireless communication system, multiple-input multiple-output (MIMO) technology plays a very important role, and MIMO refers to a technology for transmitting and receiving signals using multiple antennas in the wireless communication field. In a MIMO system, including a plurality of antenna units capable of operating simultaneously, transmitting and receiving data in the same time period can greatly increase data throughput (throughput), and provide better rate for data transmission.

In the complex environment of foldable electronic devices, how to arrange antenna units in a MIMO system is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides foldable electronic equipment and an antenna switching circuit, wherein the electronic equipment comprises three foldable parts, and partial frames of the three foldable parts are used as radiators of antenna units in a MIMO system, so that the MIMO system has good radiation characteristics under any form of the foldable electronic equipment.

In a first aspect, a foldable electronic device is provided, comprising: the device comprises a first shell, a second shell and a third shell, wherein the first shell comprises a first frame, the second shell comprises a second frame, and the third shell comprises a third frame; the first rotating shaft is positioned between the first shell and the second shell, the first rotating shaft is respectively in rotary connection with the first shell and the second shell, the second rotating shaft is positioned between the second shell and the third shell, and the second rotating shaft is respectively in rotary connection with the second shell and the third shell; a first antenna unit including a first radiator, a second antenna unit including a second radiator, the first and second radiators including a portion of the first bezel; a third antenna unit and a fourth antenna unit, wherein the third antenna unit comprises a third radiator, the fourth antenna unit comprises a fourth radiator, and the third radiator and the fourth radiator comprise part of the second frame; a fifth antenna unit, a sixth antenna unit, the fifth antenna unit including a fifth radiator, the sixth antenna unit including a sixth radiator, the fifth radiator and the sixth radiator including portions of the third bezel; the working frequency band of the first antenna unit, the working frequency band of the second antenna unit, the working frequency band of the third antenna unit, the working frequency band of the fourth antenna unit, the working frequency band of the fifth antenna unit and the working frequency band of the sixth antenna unit all comprise a first frequency band.

According to the technical scheme provided by the embodiment of the application, the antenna unit layout framework applied to the MIMO system of the electronic equipment comprising the three foldable parts is provided, and the frame of the first shell, the frame of the second shell and the frame of the third shell are respectively used as the radiators of the antenna units, so that the MIMO system has good radiation characteristics under any form of the foldable electronic equipment.

With reference to the first aspect, in certain implementations of the first aspect, the first frame has a first position, a second position, a third position, and a fourth position, the second position being located between the first position and the third position, the third position being located between the second position and the fourth position; the first radiator comprises a first frame between the first position and the second position; the second radiator includes a first border between the third location and the fourth location.

With reference to the first aspect, in certain implementations of the first aspect, the first frame includes first and second sides that intersect at an angle, and a third side that intersects at an angle with the second side; the second location and the third location are located at the second side.

With reference to the first aspect, in certain implementations of the first aspect, the first location is located at an intersection area of the first edge and the second edge; the fourth location is located at an intersection region of the second side and the third side.

According to the technical scheme provided by the embodiment of the application, when the main body parts (the parts with the lengths more than 50%) of the first radiator and the second radiator are positioned at the second side, the energy loss caused by coupling due to the fact that the frames of other shells are close to the first radiator and the second radiator when the foldable electronic equipment is in the partially unfolded state and the folded state can be reduced, and the radiation performance of the first antenna unit and the second antenna unit is improved.

With reference to the first aspect, in certain implementations of the first aspect, the second frame includes a fourth side and a fifth side; the second frame is provided with a fifth position, a sixth position, a seventh position and an eighth position, the fifth position and the sixth position are positioned on the fourth side, and the seventh position and the eighth position are positioned on the fifth side; the third radiator comprises a second frame between the fifth position and the sixth position; the fourth radiator includes a second border between the seventh location and the eighth location.

According to the technical scheme provided by the embodiment of the application, when the third radiator and the fourth radiator are respectively positioned on the fourth side and the fifth side, the coupling between the third antenna unit and the fourth antenna unit can be reduced and the isolation between the third antenna unit and the fourth antenna unit can be improved due to the fact that the distance between the fourth side and the fifth side is far.

With reference to the first aspect, in certain implementations of the first aspect, the third frame has a ninth position, a tenth position, an eleventh position, and a twelfth position, the tenth position being located between the ninth position and the eleventh position, the eleventh position being located between the tenth position and the twelfth position; the fifth radiator includes a third border between the ninth location and the tenth location; the sixth radiator includes a third border between the eleventh location and the twelfth location.

With reference to the first aspect, in certain implementations of the first aspect, the third frame includes a sixth side and a seventh side that intersect at an angle, and a eighth side that intersects at an angle with the seventh side; the tenth position and the eleventh position are located on the seventh side.

With reference to the first aspect, in certain implementations of the first aspect, the ninth location is located at an intersection area of the sixth side and the seventh side; the twelfth location is located at an intersection region of the seventh side and the eighth side.

According to the technical scheme provided by the embodiment of the application, when the main body parts (more than 50 percent of parts) of the fifth radiator and the sixth radiator are positioned on the seventh side, the energy loss caused by coupling due to the fact that the frames of other shells are close to the fifth radiator and the sixth radiator in the partially unfolded state and the folded state of the foldable electronic equipment can be reduced, and the radiation performance of the fifth antenna unit and the sixth antenna unit is improved.

With reference to the first aspect, in certain implementations of the first aspect, the foldable electronic device further includes a radio frequency chip and a switch; the radio frequency chip comprises a first radio frequency port, a second radio frequency port, a third radio frequency port and a fourth radio frequency port; the first radio frequency port is electrically connected with the first antenna unit, and the second radio frequency port is electrically connected with the second antenna unit; the third radio frequency port is electrically connected with the first common port of the switch, and the fourth radio frequency port is electrically connected with the second common port of the switch; the first port of the switch is electrically connected with the third antenna unit, the second port of the switch is electrically connected with the fifth antenna unit, the third port of the switch is electrically connected with the fourth antenna unit, and the fourth port of the switch is electrically connected with the sixth antenna unit.

With reference to the first aspect, in certain implementation manners of the first aspect, when the foldable electronic device is in an unfolded state, the first common port is electrically connected with the second port, and the second common port is electrically connected with the fourth port; when the foldable electronic device is in a partially unfolded state, the first common port is electrically connected with the first port, and the second common port is electrically connected with the third port; when the foldable electronic device is in a folded state, the first common port is electrically connected with the second port, and the second common port is electrically connected with the fourth port.

According to the technical scheme provided by the embodiment of the application, the antenna switching circuit can enable the switch to be in different electric connection states according to the state of the foldable electronic equipment, so that the MIMO system has good radiation characteristics in any state of the foldable electronic equipment.

With reference to the first aspect, in certain implementations of the first aspect, the foldable electronic device further includes a sensor for determining a morphology of the foldable electronic device.

According to the technical scheme of the embodiment of the application, the sensor can be a Hall sensor (Hall sensor). The hall sensor is a magnetic field sensor, and can determine that the foldable electronic device is in an unfolded state, a partially unfolded state, or a folded state by a change in a surrounding magnetic field (e.g., a change in a magnetic field caused by approaching or moving away an adjacent housing).

With reference to the first aspect, in certain implementations of the first aspect, the first frequency band includes at least a portion of frequency bands from 698MHz to 960 MHz.

According to the technical scheme provided by the embodiment of the application, compared with Gao Pinpin sections, the bandwidth of the low-frequency band is narrower, and the radiation efficiency is better. Accordingly, the first, second, third, fourth, fifth and sixth antenna elements may have good radiation characteristics.

In a second aspect, an antenna switching circuit is provided and applied to a foldable electronic device, where the foldable electronic device includes a first housing, a second housing, a third housing, a first rotating shaft disposed between the first housing and the second housing, and a second rotating shaft disposed between the second housing and the third housing, and further includes a first antenna unit and a second antenna unit disposed in the first housing, a third antenna unit and a fourth antenna unit disposed in the second housing, and a fifth antenna unit and a sixth antenna unit disposed in the third housing, and an operating frequency band of the first antenna unit, an operating frequency band of the second antenna unit, an operating frequency band of the third antenna unit, an operating frequency band of the fourth antenna unit, an operating frequency band of the fifth antenna unit, and an operating frequency band of the sixth antenna unit all include a first frequency band; the antenna switching circuit includes: a radio frequency chip and a switch; the radio frequency chip comprises a first radio frequency port, a second radio frequency port, a third radio frequency port and a fourth radio frequency port; the first radio frequency port is electrically connected with the first antenna unit, and the second radio frequency port is electrically connected with the second antenna unit; the third radio frequency port is electrically connected with the first common port of the switch, and the fourth radio frequency port is electrically connected with the second common port of the switch; the first port of the switch is electrically connected with the third antenna unit, the second port of the switch is electrically connected with the fifth antenna unit, the third port of the switch is electrically connected with the fourth antenna unit, and the fourth port of the switch is electrically connected with the sixth antenna unit.

With reference to the second aspect, in certain implementations of the second aspect, when the foldable electronic device is in the unfolded state, the first common port is electrically connected with the second port, and the second common port is electrically connected with the fourth port; when the foldable electronic device is in a partially unfolded state, the first common port is electrically connected with the first port, and the second common port is electrically connected with the third port; when the foldable electronic device is in a folded state, the first common port is electrically connected with the second port, and the second common port is electrically connected with the fourth port.

With reference to the second aspect, in certain implementations of the second aspect, the first frame has a first position, a second position, a third position, and a fourth position, the second position being located between the first position and the third position, the third position being located between the second position and the fourth position; the first radiator comprises a first frame between the first position and the second position; the second radiator includes a first border between the third location and the fourth location.

With reference to the second aspect, in certain implementations of the second aspect, the first frame includes first and second sides that intersect at an angle, and a third side that intersects the second side at an angle; the second location and the third location are located at the second side.

With reference to the second aspect, in certain implementations of the second aspect, the second frame includes a fourth side and a fifth side; the second frame is provided with a fifth position, a sixth position, a seventh position and an eighth position, the fifth position and the sixth position are positioned on the fourth side, and the seventh position and the eighth position are positioned on the fifth side; the third radiator comprises a second frame between the fifth position and the sixth position; the fourth radiator includes a second border between the seventh location and the eighth location.

With reference to the second aspect, in certain implementations of the second aspect, the third frame has a ninth position, a tenth position, an eleventh position, and a twelfth position, the tenth position being located between the ninth position and the eleventh position, the eleventh position being located between the tenth position and the twelfth position; the fifth radiator includes a third border between the ninth location and the tenth location; the sixth radiator includes a third border between the eleventh location and the twelfth location.

With reference to the second aspect, in certain implementations of the second aspect, the third frame includes a sixth side and a seventh side that intersect at an angle, and a eighth side that intersects at an angle with the seventh side; the tenth position and the eleventh position are located on the seventh side.

With reference to the second aspect, in certain implementations of the second aspect, the first frequency band includes at least a portion of frequency bands from 698MHz to 960 MHz.

Drawings

Fig. 1 is a schematic block diagram of a foldable electronic device 100 provided in an embodiment of the present application.

Fig. 2 is a schematic structural view of the foldable electronic device 100 in an folded-out state.

Fig. 3 is a schematic block diagram of the foldable electronic device 100 in one possible unfolded state.

Fig. 4 is a schematic block diagram of the foldable electronic device 100 in one possible folded state.

Fig. 5 is a schematic block diagram of the foldable electronic device 100 in one possible partially unfolded state.

Fig. 6 is a schematic diagram of a foldable electronic device 200 according to an embodiment of the present application.

Fig. 7 is a schematic view of the antenna unit in an unfolded state of the foldable electronic device.

Fig. 8 is a schematic view of the antenna unit in a partially unfolded state of the foldable electronic device.

Fig. 9 is a schematic view of the antenna unit in a folded state of the foldable electronic device.

Fig. 10 is a schematic diagram of a foldable electronic device 200 according to an embodiment of the present application.

Fig. 11 is a schematic diagram of a foldable electronic device 200 according to an embodiment of the present application.

Fig. 12 is a schematic diagram of a foldable electronic device 200 according to an embodiment of the present application.

Fig. 13 is a schematic diagram of an antenna switching circuit 300 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a foldable electronic device 100 according to an embodiment of the present application. The foldable electronic device 100 may be an electronic device with a folding function such as a mobile phone, a tablet computer, a watch, an electronic reader, a notebook computer, a wearable device, etc. The embodiment shown in fig. 1 is illustrated by way of example as a foldable cellular phone.

Referring to fig. 1, the foldable electronic device 100 may include a flexible display 110, a first bezel 121, a first cover 122, a second bezel 123, a second cover 124, and a rotation shaft 125. In some embodiments, the first bezel 121, the first cover 122, the second bezel 123, and the second cover 124 may form a first housing 126 and a second housing 127 that support the flexible display 110. In other embodiments, at least one of the first cover 122 and the second cover 124 may be a display screen.

The filling of the dot matrix pattern in fig. 1 may schematically represent the flexible display 110. The flexible display 110 may have the characteristics of being flexible and bendable, and may provide a new way for the user to interact based on the bendable characteristics. The display panel of the flexible display 110 may be any one of, for example, a liquid crystal flexible display (LCD), an organic light-emitting diode (OLED), an active-matrix organic LIGHT EMITTING diode (AMOLED), a flexible light-emitting diode (flex), a quantum dot LIGHT EMITTING diodes (QLED), etc., which are not limited in the embodiments of the present application.

The flexible display 110 may include a first display portion 111 corresponding to the first housing 126, a second display portion 112 corresponding to the second housing 127, and a foldable display portion 113 corresponding to the rotation shaft 125. The foldable display portion 113 may be connected between the first display portion 111 and the second display portion 112.

The first frame 121 may surround the outer periphery of the first cover 122, and at least a portion of the first frame 121 may further surround the outer periphery of the first display portion 111. The first display portion 111 may be disposed parallel to the first cover 122 at a distance, and the first display portion 111 and the first cover 122 may be located at two sides of the first frame 121. The space between the first display part 111 and the first cover 122 may be used to provide devices of the foldable electronic device 100, such as an antenna, a circuit board assembly, and the like.

The second frame 123 may surround the outer periphery of the second cover 124, and at least a portion of the second frame 123 may further surround the outer periphery of the second display portion 112. The second display portion 112 may be disposed parallel to the second cover 124 at a distance, and the second display portion 112 and the second cover 124 may be located at two sides of the second frame 123. The space between the second display 112 and the second cover 124 may be used to provide devices of the foldable electronic device 100, such as an antenna, a circuit board assembly, and the like.

In an embodiment of the present application, the cover and the frame may be two parts of the housing of the foldable electronic device 100, and the cover and the frame may be connected, and the connection may not be in an assembly manner such as clamping, bonding, welding, riveting, clearance fit, or the like. The connection between the cover and the rim is often difficult to separate. In another embodiment provided by the application, the cover and the frame may be two different components. By fitting the cover body with the bezel, a housing of the foldable electronic device 100 can be formed.

The rotation shaft 125 may be connected between the first housing 126 and the second housing 127. The first housing 126 and the second housing 127 may be moved toward or away from each other by the rotation shaft 125. Accordingly, the first display portion 111 of the flexible display screen 110 and the second display portion 112 of the flexible display screen 110 may be close to or far from each other, so that the flexible display screen 110 may be folded or unfolded.

In one example, the shaft 125 may include, for example, a main shaft, a first connection assembly, a second connection assembly. The first connecting component can be fixed with the first cover 122, the second connecting component can be fixed with the second cover 124, and the first connecting component and the second connecting component can rotate relative to the main shaft. The first connecting component and the second connecting component can drive the first shell 126 and the second shell 127 to move mutually, so as to realize the opening and closing functions of the foldable electronic device 100.

The foldable electronic device 100 shown in fig. 1 is currently in an unfolded state. In the unfolded state, the angle between the first housing 126 and the second housing 127 may be about 180 °. The flexible display 110 may be in an expanded state as shown in fig. 1.

Fig. 2 shows one possible folded state of the foldable electronic device 100. Wherein fig. 2 shows an outwardly folded state of the foldable electronic device 100 (the outwardly folded state may be simply referred to as an outwardly folded state). The folded-out state shown in fig. 2 may be, for example, a left-right folded-out state or a top-bottom folded-out state. One possible folded state of the foldable electronic device 100 is described below in connection with fig. 1 and 2.

In an embodiment of the present application, when the foldable electronic device 100 is in a folded state, it may mean that the foldable electronic device 100 is currently bent, and the bending degree of the foldable electronic device 100 is maximized. At this time, the first cover 122 and the second cover 124 may be parallel to each other, spaced apart from each other, and face to face, and the spacing distance between the first cover 122 and the second cover 124 is the smallest, and at least part of the first casing 126 and the second casing 127 are accommodated in the space enclosed by the flexible display 110; the first display unit 111, the first housing 126, the second housing 127, and the second display unit 112 are stacked in this order. Similarly, the first display portion 111 and the second display portion 112 may be parallel to each other and spaced apart from each other, and the first cover 122 and the second cover 124 may be spaced apart by a distance smaller than the distance between the first display portion 111 and the second display portion 112. At this time, the first display portion 111 and the second display portion 112 may be regarded as being located on different planes.

Referring to fig. 1 and 2, when the foldable electronic device 100 is in the folded-out state, the first cover 122 and the second cover 124 may be close to each other, and the first display 111 and the second display 112 may be close to each other. The first display part 111, the second display part 112, and the foldable display part 123 may form a housing area for accommodating the first cover 122, the second cover 124, and the rotation shaft 125. That is, the first cover 122, the second cover 124, and the rotation shaft 125 may be accommodated in a space between the first display portion 111 and the second display portion 112.

The foldable electronic device 100 may be switched between a folded state and an unfolded state. When the foldable electronic device 100 is in the folded state, the occupied space of the foldable electronic device 100 is relatively small; when the foldable electronic device 100 is in the unfolded state, the foldable electronic device 100 may display a relatively large screen to increase the viewable range of the user.

The foldable electronic device 100 may also include a third housing 128 and a hinge 129, as shown in fig. 3. The rotation shaft 129 may be connected between the third housing 128 and the second housing 127. The third housing 128 and the second housing 127 may be close to or far from each other. As the number of foldable parts of the foldable electronic device 100 increases, the occupied space of the foldable electronic device 100 can be further reduced in the folded state downward while maintaining the same screen size in the unfolded state.

In the foldable electronic device 100 shown in fig. 3, however, since there are three foldable parts (the first housing 126, the second housing 127, and the third housing 128), the foldable electronic device 100 has three forms: 1. a deployed state; 2. a folded state; 3. a partially deployed state.

1. As shown in fig. 3, is one possible unfolded state of the foldable electronic device 100. In the unfolded state, the angle between the first, second and third housings 126, 127 and 128 may be about 180 °. The flexible display 110 may be in an expanded state.

2. As shown in fig. 4, one possible folded state (tri-folded state) of the foldable electronic device 100. In the folded state, the first and second housings 126 and 127 rotate along the rotation axis 125, and the second and third housings 127 and 128 rotate along the rotation axis 129, so that the bending degree of the foldable electronic device 100 is maximized. At this time, the first, second and third housings 126, 127 and 128 may be regarded as being located on different planes.

3. As shown in fig. 5, is one possible partially unfolded state (two-folded state) of the foldable electronic device 100. In the partially deployed state, the angle between the first housing 126 and the second housing 127 may be about 180 °, and the second housing 127 and the third housing 128 may be rotated about the rotation axis 129 to bring the third housing 128 closer to the second housing 127. At this time, the first housing 126 and the second housing 127 are regarded as being located on the same plane, and the second housing 127 and the third housing 128 may be regarded as being located on different planes. In another possible partially deployed state, the angle between the third housing 128 and the second housing 127 may be about 180 ° and the first housing 126 and the second housing 127 are rotated about the axis of rotation 125 to bring the first housing 126 closer to the second housing 127.

In a 5G wireless communication system, the MIMO technology plays a very important role, and in the MIMO system, the MIMO system includes a plurality of antenna units capable of operating simultaneously, and data is transmitted and received in the same time period, so that the data throughput can be greatly increased, and a better rate is provided for data transmission. In the electronic device including a plurality of folded portions shown in fig. 3, the electromagnetic environment is more complex due to the plurality of different configurations (unfolded state, folded state, partially unfolded state), and how to install the antenna units in the MIMO system is a problem to be solved.

As shown in fig. 6, the foldable electronic device 200 may include a first housing 210, a second housing 220, a third housing 230, a first rotation axis 261, and a second rotation axis 262. The foldable electronic device 200 may further include a first antenna element 201, a second antenna element 202, a third antenna element 203, a fourth antenna element 204, a fifth antenna element 205, and a sixth antenna element 206.

The first rotating shaft 261 is located between the first housing 210 and the second housing 220, and the first rotating shaft 261 is rotatably connected with the first housing 210 and the second housing 220, so that the first housing 210 and the second housing 220 can relatively rotate along the first rotating shaft 261. The second rotating shaft 262 is located between the second housing 220 and the third housing 230, and the second rotating shaft 262 is rotatably connected with the second housing 220 and the third housing 230, respectively, such that the second housing 220 and the third housing 230 can relatively rotate along the second rotating shaft 262. In one embodiment, when the foldable electronic device 200 is in the unfolded state, the first rotation shaft 261 may be accommodated in a space formed between the first housing 210 and the second housing 220, and the second rotation shaft 262 may be accommodated in a space formed between the second housing 220 and the third housing, such that the first rotation shaft 261 and the second rotation shaft 262 are not visible to the outside of the user, to enhance the aesthetic appearance of the foldable electronic device 200.

The operating frequency band of the first antenna element 201, the operating frequency band of the second antenna element 202, the operating frequency band of the third antenna element 203, the operating frequency band of the fourth antenna element 204, the operating frequency band of the fifth antenna element 205, and the operating frequency band of the sixth antenna element 206 all comprise the first frequency band. The first antenna unit 201, the second antenna unit 202, the third antenna unit 203, the fourth antenna unit 204, the fifth antenna unit 205 and the sixth antenna unit 206 may be used as antenna sub-units in the MIMO system for transmitting and receiving data in the same time period, and increase data throughput.

The first housing 210 includes a first frame 211, the second housing 220 includes a second frame 221, and the third housing 230 includes a third frame 231.

The first antenna element 201 comprises a first radiator 241 and the second antenna element 202 comprises a second radiator 242, the first radiator 241 and the second radiator 242 comprising part of the first frame 211. The third antenna unit 203 includes a third radiator 243, the fourth antenna unit 204 includes a fourth radiator 244, and the third radiator 243 and the fourth radiator 244 include a part of the second bezel 221. The fifth antenna element 205 comprises a fifth radiator 245, the sixth antenna element 206 comprises a sixth radiator 246, the fifth radiator 245 and the sixth radiator 246 comprising part of the third border 231.

The technical solution provided in the embodiment of the present application provides an antenna unit layout architecture applied to a MIMO system of an electronic device including three foldable portions, where the frame of the first housing 210, the frame of the second housing 220, and the frame of the third housing 230 are respectively used as radiators of the antenna units, so that the MIMO system has good radiation characteristics in any form of the foldable electronic device 200.

In one embodiment, the first frequency band comprises at least a portion of the frequency bands from 698MHz to 960 MHz. In one embodiment, the first frequency band may include at least one of B5 (824 MHz-849 MHz), B8 (890 MHz-915 MHz), and B28 (704 MHz-747 MHz) in a long term evolution system.

It should be appreciated that the first antenna element 201, the second antenna element 202, the third antenna element 203, the fourth antenna element 204, the fifth antenna element 205, and the sixth antenna element 206 may operate in a low frequency band, which generally has better radiation efficiency due to a narrower bandwidth compared to the Gao Pinpin segments. Accordingly, the first antenna unit 201, the second antenna unit 202, the third antenna unit 203, the fourth antenna unit 204, the fifth antenna unit 205, and the sixth antenna unit 206 may have good radiation characteristics.

In one embodiment, the first frame 211 has a first position 2111, a second position 2112, a third position 2113, and a fourth position 2114. The second position 2112 is located between the first position 2111 and the third position 2113, and the third position 2113 is located between the second position 2112 and the fourth position 2114. The first radiator 241 includes a first rim 211 between a first location 2111 and a second location 2112. The second radiator 242 includes a first bezel 211 between a third position 2113 and a fourth position 2114.

In one embodiment, the first radiator 241 may include a portion between the first location 2111 and the second location 2112 of the first bezel 211 of the foldable electronic device 200, the portion of the first bezel 211 being a conductive bezel. In one embodiment, the first radiator 241 may further include an internal electrical conductor (e.g., liquid crystal polymer (liquid crystal polymer, LCP)) between the first location 2111 and the second location 2112 of the first bezel 211 of the foldable electronic device 200, the portion of the first bezel 211 being a non-conductive bezel. In the following examples, it will be understood accordingly.

In one embodiment, the first frame 211 includes first and second sides 212, 213 that intersect at an angle, and a third side 214 that intersects at an angle with the second side 213. The second location 2112 and the third location 2113 are located on the second side 213.

In one embodiment, first location 2111 is located at the intersection of first edge 212 and second edge 213. Fourth location 2114 is located at the intersection of second edge 213 and third edge 214. In one embodiment, first location 2111 may also be located on first side 212. Fourth location 2114 may also be located on third side 214.

It should be appreciated that the first edge 212 and the second edge 213 may have an overlap region, wherein the overlap region may be understood as an intersection region of the first edge 212 and the second edge 213. When the intersection of the first edge 212 and the second edge 213 is arcuate, the arcuate border may be understood as the overlapping/intersecting area of the first edge 131 and the second edge 132. When the intersection of the first edge 212 and the second edge 213 is at a right angle, the overlapping/intersecting area of the first edge 212 and the second edge 213 may be understood as an area within a first threshold (e.g., 5 mm) from the intersection.

It should be appreciated that when the main body portions (portions having lengths greater than 50%) of the first and second radiators 241 and 242 are located on the second side 213, it is possible to reduce energy loss due to coupling of the other housings when the foldable electronic device 200 is in the partially unfolded state, and in the folded state, due to the frames of the other housings being close to the first and second radiators 241 and 242, and to improve the radiation performance of the first and second antenna units 201 and 202.

Meanwhile, when the first antenna unit 201 and the second antenna unit 202 operate in the low frequency band, the first radiator 241 and the second radiator 242 have larger dimensions (generally, a center frequency of the low frequency band or a quarter or half of an operating wavelength corresponding to a resonance frequency point), and the second side 213 has a longer length, which is more convenient for layout of the first radiator 241 and the second radiator 242 than the first side 212 and the third side 214.

In one embodiment, the first frame 211 is provided with a break at the first position 2111, the second position 2112, the third position 2113 and the fourth position 2114, and the first antenna unit 201 and the second antenna unit 202 may be wire antennas. Or in an embodiment, the first frame 211 is provided with a break at the first position 2111 and the third position 2113, the first frame 211 may be electrically connected to the floor at the second position 2112 and the third position 2113, and the first antenna unit 201 and the second antenna unit 202 may be line antennas. Or in one embodiment, the first bezel 211 may be electrically connected to the floor at a first location 2111, a second location 2112, a third location 2113, and a fourth location 2114, and the first antenna element 201 and the second antenna element 202 may be slot (slot) antennas.

It should be appreciated that in one embodiment, the first antenna element 201, the second antenna element 202, the third antenna element 203, the fourth antenna element 204, the fifth antenna element 205, and the sixth antenna element 206 may be the same antenna form. Or the antenna forms of the first antenna element 201, the second antenna element 202, the third antenna element 203, the fourth antenna element 204, the fifth antenna element 205, and the sixth antenna element 206 are all different. The embodiment of the present application is not limited to the specific forms of the first antenna unit 201, the second antenna unit 202, the third antenna unit 203, the fourth antenna unit 204, the fifth antenna unit 205 and the sixth antenna unit 206, and the antenna forms of the antenna units may be changed by means of slotting or grounding on the frame of the housing.

In one embodiment, the first radiator 241 or the second radiator 242 may further include a parasitic stub through a flexible motherboard (flexible printed circuit, FPC) or a laser-direct-structuring (LDS) or the like, and the parasitic stub may be used to expand the operating bandwidth between the first antenna unit 201 or the second antenna unit 202. In the embodiments described below, the radiator of the antenna unit may include parasitic branches in this manner to extend the operating bandwidth.

In one embodiment, the second bezel 221 includes a fourth side 222 and a fifth side 223. The second frame 221 has a fifth position 2211, a sixth position 2212, a seventh position 2213 and an eighth position 2214, the fifth position 2211 and the sixth position 2212 are located on the fourth side 222, and the seventh position 2213 and the eighth position 2214 are located on the fifth side 223. The third radiator 243 includes a second bezel 221 between a fifth position 2211 and a sixth position 2212. The fourth radiator 244 includes a second bezel 211 between a seventh position 2213 and an eighth position 2214.

It should be appreciated that when the third and fourth radiators 243 and 244 are located at the fourth and fifth sides 222 and 223, respectively, since the distance between the fourth and fifth sides 222 and 223 is greater, the coupling between the third and fourth antenna units 203 and 204 may be reduced, and the isolation between the third and fourth antenna units 203 and 204 may be improved.

Meanwhile, when the third antenna unit 203 and the fourth antenna unit 204 operate in the low frequency band, the sizes of the third radiator 243 and the fourth radiator 244 are larger (generally, the third radiator 243 and the fourth radiator 244 are located on the fourth side 222 and the fifth side 223, respectively, which are more convenient for layout, and are one-fourth or one-half of the operating wavelength corresponding to the center frequency or the resonance frequency point of the low frequency band).

In one embodiment, the third frame 231 has a ninth position 2311, a tenth position 2312, an eleventh position 2313, and a twelfth position 2314. The tenth position 2312 is located between the ninth position 2311 and the eleventh position 2313, and the eleventh position 2313 is located between the tenth position 2312 and the twelfth position 2314. The fifth radiator 245 includes a third bezel 231 between the ninth location 2311 and the tenth location 2312. The sixth radiator 246 includes a third bezel 231 between the eleventh location 2313 and the twelfth location 2314.

In one embodiment, the third frame 231 includes a sixth side 232 and a seventh side 233 that intersect at an angle, and a eighth side 234 that intersects at an angle with the seventh side 233. Tenth position 2312 and eleventh position 2313 are located on seventh side 233.

In one embodiment, ninth location 2311 is located at the intersection of sixth side 232 and seventh side 233. The twelfth location 2314 is located at the intersection of the seventh side 233 and the eighth side 234. In one embodiment, ninth location 2311 may also be located on sixth side 232. The twelfth location 2314 may also be located at the eighth location 234.

It should be appreciated that when the main body portions (greater than 50% of the portions) of the fifth radiator 245 and the sixth radiator 246 are located at the seventh side 233, the radiation performance of the fifth antenna element 205 and the sixth antenna element 206 can be improved due to the energy loss caused by coupling of the rims of the other cases near the fifth radiator 245 and the sixth radiator 246 in the partially unfolded state, as well as in the folded state of the foldable electronic device 200.

Meanwhile, when the fifth antenna unit 205 and the sixth antenna unit 206 operate in the low frequency band, the fifth radiator 245 and the sixth radiator 246 have larger sizes (generally, a center frequency of the low frequency band or a quarter or half of an operating wavelength corresponding to a resonance frequency point), and the length of the seventh side 233 is longer, which is more convenient for the layout of the larger sizes of the fifth radiator 245 and the sixth radiator 246 than the sixth side 232 and the eighth side 234.

In one embodiment, the foldable electronic device 200 may also include a flexible display screen 260, as shown in fig. 7. The flexible display 260 is connected to the first, second and third housings 210, 220 and 230, and the first, second and third housings 210, 220 and 230 serve to support the flexible display 260.

As shown in fig. 7, when the foldable electronic device 200 is in the unfolded state, the first antenna unit 201, the second antenna unit 202 are located on the left side, and the fifth antenna unit 205, the sixth antenna unit 206 are located on the right side. The left sides of the first antenna element 201 and the second antenna element 202 and the right sides of the fifth antenna element 205 and the sixth antenna element 206 are not shielded. Since the third antenna unit 203 and the fourth antenna unit 204 are located on the second housing 220, both the left and right sides (x-direction) of the third radiator of the third antenna unit 203 and the fourth radiator of the fourth antenna unit 204 are provided with metal (the first housing 220 and the third housing 230). The third antenna unit 203 and the fourth antenna unit 204 are in a worse electromagnetic environment than the first antenna unit 201, the second antenna unit 202, the fifth antenna unit 205, and the sixth antenna unit 206.

Accordingly, in the unfolded state, the foldable electronic device 200 may form a 4×4 MIMO system with the first antenna unit 201, the second antenna unit 202, the fifth antenna unit 205, and the sixth antenna unit 206 as antenna units in the MIMO system.

As shown in fig. 8, when the foldable electronic device 200 is in the partially unfolded state, the fifth antenna unit 205 and the sixth antenna unit 206 are close to the first housing 210. In one embodiment, electronic components, such as a printed circuit board (printed circuit board, PCB), camera module, battery, etc., may be disposed within the first housing 210. Accordingly, the thickness (length in the z-direction) of the first housing 210 is greater than the thickness of the second housing 220 and greater than the thickness of the third housing 230. Because the thickness of the first housing 210 is relatively thick, the distance D between the fifth radiator of the fifth antenna unit 205 or the sixth radiator of the sixth antenna unit 206 and the first housing 210 is too small, and the energy radiated outward by the fifth antenna unit 205 and the sixth antenna unit 206 may be coupled to the first housing 210, resulting in poor radiation performance of the fifth antenna unit 205 and the sixth antenna unit 206. In one embodiment, D may be less than or equal to 1mm.

Therefore, in the partially unfolded state, the foldable electronic device 200 may form a 4×4 MIMO system with the first antenna unit 201, the second antenna unit 202, and the third and fourth antenna units 203, 204 as antenna units in the MIMO system.

As shown in fig. 9, when the foldable electronic device 200 is in the folded state, the first antenna unit 201 and the second antenna unit 202 are located at the upper layer and toward the left side, and the fifth antenna unit 205 and the sixth antenna unit 206 are located at the bottom layer and toward the right side. The left sides of the first antenna unit 201 and the second antenna unit 202 and the right sides of the fifth antenna unit 205 and the sixth antenna unit 206 are not shielded, and the directions of the first antenna unit 201 and the second antenna unit 202 and the sixth antenna unit 206 are different, so that mutual influence is not generated. While since the third antenna unit 203 and the fourth antenna unit 204 are located on the second housing 220, located in the middle layer (located between the first housing 210 and the third housing 230 in the z-direction), both upper and lower sides (z-direction) of the third radiator of the third antenna unit 203 and the fourth radiator of the fourth antenna unit 204 are provided with metal (the first housing 220 and the third housing 230) and the flexible display screen 260. When the third antenna unit 203 and the fourth antenna unit 204 generate radiation, the outwardly radiated energy is coupled to the surrounding metal (the first housing 220 and the third housing 230) and the flexible display 260, so that the radiation performance of the third antenna unit 203 and the fourth antenna unit 204 is poor.

Accordingly, when the foldable electronic device 200 is in the folded state, a 4×4 MIMO system can be formed by using the first antenna unit 201, the second antenna unit 202, the fifth antenna unit 205, and the sixth antenna unit 206 as antenna units in the MIMO system.

In one embodiment, the foldable electronic device 200 may also include a sensor that may be used to determine the morphology of the foldable electronic device 200. In one embodiment, the sensor may be a Hall sensor (Hall sensor). The hall sensor is a magnetic field sensor, and can determine that the foldable electronic device is in an unfolded state, a partially unfolded state, or a folded state by a change in a surrounding magnetic field (e.g., a change in a magnetic field caused by approaching or moving away an adjacent housing).

In one embodiment, the first frame 211 may further include a first ground point 2115 and a second ground point 2116, as shown in fig. 10. The first bezel 211 is electrically connected to the floor at a first ground point 2115 and a second ground point 2116. The first ground point 2115 and the second ground point 2116 may be located between the second location 2112 and the third location 2113. The first ground point 2115 and the second ground point 2116 may be used to introduce energy coupled to each other into the floor when the first antenna unit 201 and the second antenna unit 202 generate radiation, reducing the amount of coupling between the first antenna unit 201 and the second antenna unit 202, thereby improving the isolation between the first antenna unit 201 and the second antenna unit 202.

It should be understood that at least one grounding point may be disposed between adjacent antenna units to enhance the isolation between the two antenna units, and the embodiment of the present application is only illustrated by using two grounding points disposed between the first antenna unit 201 and the second antenna unit 202 as an example, which is not limited in any way.

In one embodiment, the foldable electronic device 200 may further include a seventh antenna unit 207, as shown in fig. 11. The seventh antenna unit 207 may include a seventh radiator. In one embodiment, the first frame 211 may have a thirteenth location 2117 and a fourteenth location 2118. The seventh radiator may include a first bezel 211 between a thirteenth location 2117 and a fourteenth location 2118. The operating frequency band of the seventh antenna element 207 may comprise the second frequency band.

It should be understood that in the above embodiment, the seventh antenna unit 207 is described taking as an example a radiator using a first frame different from the first antenna unit 201. In one embodiment, the seventh antenna unit 207 may multiplex the first radiator 241 of the first antenna unit 201 as a seventh radiator, as shown in fig. 12.

In one embodiment, the first frame 211 may include a third ground point 2119. The first bezel 211 may be electrically connected to the floor at a third ground point 2119 through the filter 215. The filter 215 may be configured to have a high impedance in the first frequency band equivalent to the first bezel 211 not being electrically connected to the floor at the third ground point 2119, and a low impedance in the second frequency band equivalent to the first bezel 211 being electrically connected to the floor at the third ground point 2119.

When the first antenna unit 201 is operated, the feeding unit feeds the electric signal in the first frequency band, the filter 215 presents high impedance, the first frame 211 is not electrically connected to the ground at the third grounding point 2119, and the first frame 211 between the first position 2111 and the second position 2112 is used as the first radiator to generate radiation. When the seventh antenna unit 207 is operated, the feeding unit feeds the electric signal in the second frequency band, the filter 215 presents low impedance, the first frame 211 is electrically connected to the floor at the third grounding point 2119, and the first frame 211 between the first position 2111 and the third grounding point 2119 is used as a seventh radiator to generate radiation.

It should be understood that the multiplexing of the seventh antenna unit 207 to the first radiator in the first antenna unit 201 is used only as an example, and in actual production or design, the multiplexing of the radiators of more antenna units may be implemented by the internal layout of the foldable electronic device 200, which is not described in detail herein.

Fig. 13 is a schematic diagram of an antenna switching circuit 300 according to an embodiment of the present application, which can be applied to the foldable electronic device 200 shown in fig. 6.

As shown in fig. 13, the antenna switching circuit 300 includes a radio frequency chip (RF IC) 310 and a switch 320.

The radio frequency chip can be used for modulating and demodulating the radio frequency signals, and can up-convert the radio frequency signals (increase the frequency of the radio frequency signals) and down-convert the radio frequency signals (decrease the frequency of the radio frequency signals).

The radio frequency chip 310 includes a first radio frequency port 311, a second radio frequency port 312, a third radio frequency port 313, and a fourth radio frequency port 314. The first rf port 311 is electrically connected to the first antenna unit 201, and the second rf port 312 is electrically connected to the second antenna unit 202. The third radio frequency port 313 is electrically connected to a first common port 321 of the switch 320 and the fourth radio frequency port 314 is electrically connected to a second common port 322 of the switch 320.

The first port 331 of the switch 320 is electrically connected to the third antenna element 203, the second port 332 of the switch 320 is electrically connected to the fifth antenna element 205, the third port 333 of the switch 320 is electrically connected to the fourth antenna element 204, and the fourth port 334 of the switch 320 is electrically connected to the sixth antenna element 206.

It should be appreciated that the switch 320 may be used to switch the electrical connection of the third rf port 313 to the third antenna element 203 and the fifth antenna element 205, and to switch the electrical connection of the fourth rf port 314 to the fourth antenna element 204 and the sixth antenna element 206.

According to the technical scheme provided by the embodiment of the application, the antenna switching circuit 300 can enable the switch 320 to be in different electric connection states according to the state of the foldable electronic device, so that the MIMO system has good radiation characteristics in any state of the foldable electronic device.

In one embodiment, when the foldable electronic device is in the unfolded state, the first common port 321 is electrically connected 332 with the second port, and the second common port 322 is electrically connected 334 with the fourth port. Correspondingly, the third rf port 313 is electrically connected to the fifth antenna element 205, and the fourth rf port 314 is electrically connected to the sixth antenna element 206. In the unfolded state, the foldable electronic device may be configured to transmit or receive data in the same time period by using the first antenna unit 201, the second antenna unit 202, the fifth antenna unit 205, and the sixth antenna unit 206 as antenna units in the MIMO system.

In one embodiment, the first common port 321 is electrically connected to the first port 331 and the second common port 322 is electrically connected to the third port 333 when the foldable electronic device is in the partially unfolded state. Correspondingly, the third rf port 313 is electrically connected to the third antenna unit 203, and the fourth rf port 314 is electrically connected to the fourth antenna unit 204. In the partially unfolded state, the foldable electronic device may be used as antenna units in the MIMO system by the first antenna unit 201, the second antenna unit 202, the third antenna unit 203, and the fourth antenna unit 204, and perform data transmission or reception in the same time period.

In one embodiment, when the foldable electronic device is in the folded state, the first common port 321 is electrically connected 332 with the second port, and the second common port 322 is electrically connected 334 with the fourth port. Correspondingly, the third rf port 313 is electrically connected to the fifth antenna element 205, and the fourth rf port 314 is electrically connected to the sixth antenna element 206. When the foldable electronic device is in a folded state, the first antenna unit 201, the second antenna unit 202, the fifth antenna unit 205, and the sixth antenna unit 206 may be used as antenna units in the MIMO system, and data may be transmitted or received in the same time period.

It should be appreciated that in the embodiment of the present application, the switch 320 is illustrated as a double pole four throw (double pole four throw, DPFT). In practical applications, the switch 320 may be replaced by two single pole double throw (single pole double throw, SPDT) switches, or the switch 320 may be replaced by two single pole multiple throw (single pole x throw, SPXT) switches. In one embodiment, switch 320 may also be double pole multiple throw (double pole x throw, DPXT), and multiple pole multiple throw (x pole x throw, XPXT), as well as for the above embodiments.

In an embodiment, a filter 341 may be further disposed between the rf port and the antenna unit, where the filter 341 may be configured to filter out an out-of-band spurious of the rf signal received or transmitted by the antenna unit, so as to improve the working efficiency of the antenna switching circuit 300.

In one embodiment, a Power Amplifier (PA) and a low noise amplifier (low noise amplifier, LNA) may also be provided between the radio frequency port and the antenna element. Wherein the PA may be used to amplify the power of the radio frequency signal transmitted by the antenna element. The LNA may be used to amplify the power of the radio frequency signal received by the antenna element.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A foldable electronic device, comprising:

The device comprises a first shell, a second shell and a third shell, wherein the first shell comprises a first frame, the second shell comprises a second frame, and the third shell comprises a third frame;

The first rotating shaft is positioned between the first shell and the second shell, the first rotating shaft is respectively in rotary connection with the first shell and the second shell, the second rotating shaft is positioned between the second shell and the third shell, and the second rotating shaft is respectively in rotary connection with the second shell and the third shell;

a first antenna unit including a first radiator, a second antenna unit including a second radiator, the first and second radiators including a portion of the first bezel;

A third antenna unit and a fourth antenna unit, wherein the third antenna unit comprises a third radiator, the fourth antenna unit comprises a fourth radiator, and the third radiator and the fourth radiator comprise part of the second frame;

a fifth antenna unit, a sixth antenna unit, the fifth antenna unit including a fifth radiator, the sixth antenna unit including a sixth radiator, the fifth radiator and the sixth radiator including portions of the third bezel;

The working frequency band of the first antenna unit, the working frequency band of the second antenna unit, the working frequency band of the third antenna unit, the working frequency band of the fourth antenna unit, the working frequency band of the fifth antenna unit and the working frequency band of the sixth antenna unit all comprise a first frequency band.

2. The foldable electronic device of claim 1, wherein the foldable electronic device comprises,

The first frame has a first position, a second position, a third position, and a fourth position, the second position being located between the first position and the third position, the third position being located between the second position and the fourth position;

The first radiator comprises a first frame between the first position and the second position;

the second radiator includes a first border between the third location and the fourth location.

3. The foldable electronic device of claim 2, wherein the foldable electronic device comprises,

The first frame comprises a first edge and a second edge which are intersected at an angle, and a third edge which is intersected with the second edge at an angle;

the second location and the third location are located at the second side.

4. A foldable electronic device according to claim 3, wherein,

The first location is located at an intersection region of the first edge and the second edge;

The fourth location is located at an intersection region of the second side and the third side.

5. The foldable electronic device of any one of claims 1-4, wherein the foldable electronic device comprises a foldable electronic device,

The second frame comprises a fourth side and a fifth side;

The second frame is provided with a fifth position, a sixth position, a seventh position and an eighth position, the fifth position and the sixth position are positioned on the fourth side, and the seventh position and the eighth position are positioned on the fifth side;

The third radiator comprises a second frame between the fifth position and the sixth position;

The fourth radiator includes a second border between the seventh location and the eighth location.

6. The foldable electronic device of any one of claims 1-5, wherein the foldable electronic device comprises a foldable electronic device,

The third frame has a ninth position, a tenth position, an eleventh position, and a twelfth position, the tenth position being located between the ninth position and the eleventh position, the eleventh position being located between the tenth position and the twelfth position;

the fifth radiator includes a third border between the ninth location and the tenth location;

the sixth radiator includes a third border between the eleventh location and the twelfth location.

7. The foldable electronic device of claim 6, wherein the foldable electronic device comprises,

The third frame comprises a sixth side and a seventh side which are intersected at an angle, and a eighth side which is intersected with the seventh side at an angle;

The tenth position and the eleventh position are located on the seventh side.

8. A foldable electronic device according to claim 3, wherein,

The ninth location is located at an intersection region of the sixth side and the seventh side;

The twelfth location is located at an intersection region of the seventh side and the eighth side.

9. The foldable electronic device of any one of claims 1-8, wherein the foldable electronic device comprises a foldable electronic device,

The foldable electronic device further comprises a radio frequency chip and a switch;

the radio frequency chip comprises a first radio frequency port, a second radio frequency port, a third radio frequency port and a fourth radio frequency port;

The first radio frequency port is electrically connected with the first antenna unit, and the second radio frequency port is electrically connected with the second antenna unit;

the third radio frequency port is electrically connected with the first common port of the switch, and the fourth radio frequency port is electrically connected with the second common port of the switch;

The first port of the switch is electrically connected with the third antenna unit, the second port of the switch is electrically connected with the fifth antenna unit, the third port of the switch is electrically connected with the fourth antenna unit, and the fourth port of the switch is electrically connected with the sixth antenna unit.

10. The foldable electronic device of claim 9, wherein the foldable electronic device comprises a plurality of foldable electronic devices,

When the foldable electronic device is in an unfolded state, the first public port is electrically connected with the second port, and the second public port is electrically connected with the fourth port;

When the foldable electronic device is in a partially unfolded state, the first common port is electrically connected with the first port, and the second common port is electrically connected with the third port;

when the foldable electronic device is in a folded state, the first common port is electrically connected with the second port, and the second common port is electrically connected with the fourth port.

11. The foldable electronic device of claim 10, wherein the foldable electronic device comprises,

The foldable electronic device further includes a sensor for determining a morphology of the foldable electronic device.

12. The foldable electronic device of any one of claims 1-11, wherein the first frequency band comprises at least a portion of the frequency bands 698MHz to 960 MHz.

13. The antenna switching circuit is characterized by being applied to foldable electronic equipment, wherein the foldable electronic equipment comprises a first shell, a second shell, a third shell, a first rotating shaft arranged between the first shell and the second shell, a second rotating shaft arranged between the second shell and the third shell, a first antenna unit and a second antenna unit which are arranged on the first shell, a third antenna unit and a fourth antenna unit which are arranged on the second shell, and a fifth antenna unit and a sixth antenna unit which are arranged on the third shell, and the working frequency range of the first antenna unit, the working frequency range of the second antenna unit, the working frequency range of the third antenna unit, the working frequency range of the fourth antenna unit, the working frequency range of the fifth antenna unit and the working frequency range of the sixth antenna unit all comprise a first frequency range;

The antenna switching circuit includes: a radio frequency chip and a switch;

14. The antenna switching circuit of claim 13 wherein,

15. The antenna switching circuit according to claim 13 or 14, wherein,

16. The antenna switching circuit of claim 15 wherein,

the second location and the third location are located at the second side.

17. The antenna switching circuit according to any one of claims 13 to 16 wherein,

The second frame comprises a fourth side and a fifth side;

18. The antenna switching circuit according to any one of claims 13 to 17 wherein,

19. The antenna switching circuit of claim 18 wherein,

The tenth position and the eleventh position are located on the seventh side.

20. The antenna switching circuit of any one of claims 13 to 19 wherein the first frequency band comprises at least a portion of the frequency bands 698MHz to 960 MHz.