Antenna assembly and foldable electronic equipment

Abstract

The utility model relates to an antenna assembly and foldable electronic equipment, the antenna assembly is used for the foldable electronic equipment, and the foldable electronic equipment is provided with a first frame body and a second frame body which are connected through a rotating shaft module; the antenna assembly comprises a first radiator which is located on a first frame body and is used for radiating a wireless signal of a first frequency band; the second radiating body is suspended on the second frame body, and the first radiating body and the second radiating body are symmetrical relative to the rotating shaft module; when the foldable electronic device is in a folded state, the second radiator is coupled with the first radiator and generates an electric field opposite to the first radiator.

Description

Technical Field

[0001] The present disclosure relates to the technical field of antennas, and particularly to an antenna assembly and a foldable electronic device. Background Art

[0002] In recent years, with the popularization and application of the fifth-generation mobile communication technology (5G), terminal devices have undergone significant changes and developments, and currently, the high data rate and low latency characteristics of the 5G network can be fully utilized for communication.

[0003] However, due to the presence of the rotating shaft module in the foldable electronic device, when the foldable electronic device is in the folded state, a reverse current is likely to be generated, resulting in damage to the radiation performance of the antenna. In the related art, a switch component (which can also be a switch tuning component) is used to eliminate the reverse current, making the coupling scheme in the foldable electronic device somewhat complex. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, the present disclosure provides an antenna assembly and a foldable electronic device.

[0005] In a first aspect of the present disclosure, an antenna assembly is provided. The antenna assembly is for a foldable electronic device, and the foldable electronic device has a first housing and a second housing connected by a rotating shaft module;

[0006] The antenna assembly includes:

[0007] A first radiator, located on the first housing, for radiating wireless signals in a first frequency band;

[0008] A second radiator, suspended on the second housing, and the first radiator and the second radiator are symmetric with respect to the rotating shaft module;

[0009] When the foldable electronic device is in the folded state, the second radiator is coupled to the first radiator and generates an electric field opposite to that of the first radiator.

[0010] Optionally, the antenna assembly includes:

[0011] A first feeder, for outputting a first feeding signal;

[0012] A first switch component, a first end of the first switch component is connected to the first feeder, and a second end of the first switch component is connected to the second radiator;

[0013] When the foldable electronic device is in the unfolded state, the first switch component connects the first feed source and the second radiator, and the second radiator radiates wireless signals in a second frequency band under the excitation of the first feeding signal; the second frequency band is at least partially different from the first frequency band;

[0014] When the foldable electronic device is in the folded state, the first switch component disconnects the first feed source and the second radiator, and the second radiator is coupled to the first radiator.

[0015] Optionally, the antenna assembly further includes:

[0016] A third radiator, which is suspended on the second housing; wherein, the installation position of the third radiator is different from that of the second radiator;

[0017] A second feed source, which is used to output a second feeding signal;

[0018] A second switch component, the first end of the second switch component is connected to the second feed source, and the second end of the second switch component is connected to the third radiator;

[0019] When the foldable electronic device is in the unfolded state, the second switch component connects the second feed source and the third radiator, and the third radiator radiates wireless signals in a third frequency band under the excitation of the second feeding signal; the third frequency band is at least partially different from the first frequency band and the second frequency band.

[0020] Optionally, the antenna assembly further includes:

[0021] A fourth radiator, which is arranged on the first housing, and the fourth radiator is symmetric with the third radiator with respect to the rotation axis module, and is used to radiate wireless signals in a fourth frequency band; the frequency of the fourth frequency band is higher than the frequency of any one of the first frequency band, the second frequency band and the third frequency band;

[0022] When the foldable electronic device is in the folded state, the third radiator is coupled to the fourth radiator and generates an electric field opposite to that of the fourth radiator.

[0023] Optionally, the antenna assembly further includes:

[0024] A fifth radiator, which is located on the first housing, and a slit is provided between the fifth radiator and the first radiator; and is used to radiate wireless signals in a fifth frequency band;

[0025] The fifth frequency band is at least partially different from the first frequency band, the second frequency band and the third frequency band.

[0026] Optionally, the antenna assembly further includes:

[0027] A sixth radiator, which is located on the second housing, a slit is provided between the sixth radiator and the second radiator and the sixth radiator is symmetric with the fifth radiator with respect to the rotation axis module;

[0028] When the foldable electronic device is in a folded state, the sixth radiator is coupled to the fifth radiator and generates an electric field opposite to that of the fifth radiator.

[0029] Optionally, the operating length of the second radiator is half of the wavelength of the first frequency corresponding to the first frequency band; the first frequency is the center frequency within the first frequency band.

[0030] Optionally, the operating length of the third radiator is half of the wavelength of the second frequency corresponding to the fourth frequency band; the second frequency is the center frequency within the fourth frequency band.

[0031] Optionally, the operating length of the sixth radiator is one-fourth of the wavelength of the third frequency corresponding to the fifth frequency band; the third frequency is the center frequency within the fifth frequency band.

[0032] In a second aspect of the present disclosure, there is provided a foldable electronic device, characterized in that it includes: a rotating shaft module, a first housing, a second housing, and an antenna assembly according to any one of the first aspect;

[0033] Wherein, the first housing and the second housing are connected through the rotating shaft module.

[0034] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0035] In the embodiments of the present disclosure, by suspending the second radiator symmetric to the first radiator, the equivalent electrical length of the second radiator as a coupling stub can be controlled, and then the operating mode of the second radiator can be controlled, so that when the foldable device is in a folded state, without other circuit arrangements, the second radiator can be coupled to the first radiator, and the second radiator can generate an electric field opposite to that of the first radiator. It can be seen that in the embodiments of the present disclosure, only by suspending the second radiator can the performance of the first radiator radiating wireless signals in the first frequency band be ensured, thereby effectively reducing the complexity of the coupling scheme in the foldable electronic device.

[0036] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0038] Figure 1 is a schematic structural diagram of an antenna assembly shown in the related art.

[0039] Figure 2It is a schematic diagram showing the coupling principle of an antenna assembly shown in the related art.

[0040] Figure 3 It is a schematic diagram of an antenna assembly shown according to an exemplary embodiment.

[0041] Figure 4 It is a schematic diagram showing the coupling principle of an antenna assembly shown according to an exemplary embodiment.

[0042] Figure 5 It is a schematic diagram showing the impedance change of a coupling stub shown according to an exemplary embodiment.

[0043] Figure 6 It is a multiplexing tuning topology diagram of a coupling stub shown according to an exemplary embodiment.

[0044] Figure 7 It is a schematic diagram showing the performance of a coupling stub without a switching component shown according to an exemplary embodiment.

[0045] Figure 8 It is a schematic of the performance of an antenna assembly shown according to an exemplary embodiment Figure 1 .

[0046] Figure 9 It is a schematic of the performance of an antenna assembly shown according to an exemplary embodiment Figure 2 .

[0047] Figure 10 It is a block diagram of a terminal device shown according to an exemplary embodiment.

[0048] In the above figures:

[0049] A, lower radiator; B, upper radiator; A1, lower coupling stub; B1, upper coupling stub; 11, ground plane; I, coupling current; V, coupling voltage; 31, rotating shaft module; 32, first housing; 33, second housing; 34, first radiator; 35, second radiator; 36, first feeder; 37, first switching component; 38, third radiator; 39, second feeder; 40, second switching component; 41, fifth radiator; 42, sixth radiator;

[0050] 1000, terminal device; 1002, processing component; 1004, memory; 1006, power supply component; 1008, multimedia component; 1010, audio component; 1012, input / output interface; 1014, sensor component; 1016, communication component; 1020, processor. Detailed implementation manners

[0051] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0052] In recent years, with the development of the fifth-generation mobile communication technology, base stations have been able to support 5G frequency bands. Currently, the mainly used millimeter-wave frequency bands and mid-low frequency bands include: N41 frequency band (2496 MHz - 2690 MHz), N77 frequency band (3300 MHz - 4200 MHz), N78 frequency band (3300 MHz - 3800 MHz), and N79 frequency band (4400 MHz - 5000 MHz). Due to the limitation of available frequencies and the excellent propagation distance of the low-frequency (LB) band, terminal devices are increasingly using low-frequency bands, such as the N28 frequency band (703 MHz - 748 MHz). Currently, terminal devices have started to support low-frequency MIMO (greater than 2*2 MIMO, where 2*2 represents dual input and dual output) antenna designs.

[0053] A foldable electronic device is a type of 5G terminal device. Due to the existence of the rotating shaft module in the foldable electronic device, reverse current is likely to be generated at a position symmetrical to the antenna radiator, resulting in impaired radiation performance of the antenna. In some embodiments, coupling stubs of the antenna radiator can be provided on the frame of the foldable electronic device, thereby eliminating the reverse current and ensuring the radiation performance of the antenna.

[0054] Figure 1 is a schematic structural diagram of an antenna assembly shown in the related art. As Figure 1 shown, a dual low-frequency antenna scheme can be adopted in the foldable electronic device. When the foldable electronic device is in the unfolded state, the radiators of the two low-frequency antennas can be respectively at the bottom corner position and the side position of the frame, as shown by the lower radiator A and the upper radiator B in Figure 1 . The remaining frame can be used as the installation position for a four-in-four-out antenna, a GPS antenna, and a WiFi antenna, which are combinations of a mid-high frequency (MHB) antenna and a SUB-6 antenna. At the same time, by using the symmetrical positions of the lower radiator A and the upper radiator B, lower coupling stubs A1 and upper coupling stubs B1 are set to eliminate the reverse current on the opposite side of the lower radiator A and the upper radiator B when the foldable electronic device is in the folded state, and ensure the radiation performance of the antenna.

[0055] In one embodiment, the upper coupling stub B1 can be connected to the middle frame in the form of an inverted-f antenna (IFA). The upper coupling stub B1 has a ground plane 11, such that the equivalent electrical length (which can be understood as the operating length) of the upper coupling stub B1 is equal to a quarter wavelength. The equivalent electrical length refers to the influence of a section of circuit or an electrical component on the propagation of an electrical signal, which is equivalent to the influence of an ideal wire of a certain length on the signal propagation. Here, specifically, it refers to the influence of the upper coupling stub B1 on the propagation of an electrical signal, which is equivalent to the influence of an ideal wire of a certain length on the signal propagation.

[0056] In one embodiment, the equivalent electrical length of the lower coupling stub A1 is equal to a quarter wavelength.

[0057] Figure 2 It is a schematic diagram showing the coupling principle of an antenna assembly shown in the related art. As shown in Figure 2, it shows that when the foldable electronic device is in the folded state, the radiation performance of the upper radiator B is improved by using the upper coupling stub B1. Since the equivalent electrical length of the upper coupling stub B1 is equal to a quarter wavelength, the coupling resonance is the quarter mode corresponding to the quarter wavelength. At this time, the coupling current I is strong, which is inversely proportional to the coupling voltage I. By adjusting the phase of the coupling current I on the upper coupling stub B1, the reverse current can be eliminated to a certain extent, and then the efficiency depression caused by the reverse current can be eliminated, realizing the improvement of the radiation performance.

[0058] However, the impedance corresponding to the quarter mode changes rapidly, and the bandwidth of the upper coupling stub B1 is narrow. At this time, it is necessary to switch multiple current states to cover the entire waveform of the upper radiator B. That is, when the foldable electronic device is in the folded state, the upper coupling stub B1 needs to be controlled by the switch component to cover the frequency band corresponding to the upper radiator B. It can be seen that in the prior art, a switch component needs to be set to control the coupling of the upper radiator B and the upper coupling stub B1, making the coupling scheme in the foldable electronic device have a certain complexity.

[0059] In addition to the above, since the upper coupling stub B1 is always under the control of the switch component, the upper coupling stub B1 is in an occupied state and cannot be used as both a coupling stub and a DM / PM antenna at the same time. Then, in the case of limited space and size in the foldable electronic device, it is difficult to multiplex the upper coupling stub B1 as the main radiator of the antenna, and it is difficult to implement the four-low-frequency antenna scheme.

[0060] To solve the above technical problems, an embodiment of the present disclosure provides an antenna assembly.

[0061] In some embodiments, Figure 3 It is a schematic diagram of an antenna assembly shown according to an exemplary embodiment. Refer to Figure 3As shown, the antenna assembly can be used in a foldable electronic device. The foldable electronic device may have a first housing 32 and a second housing 33 connected by a rotating shaft module 31.

[0062] The antenna assembly includes:

[0063] A first radiator 34 located on the first housing 32 for radiating wireless signals in a first frequency band;

[0064] A second radiator 35 suspended on the second housing 33, and the first radiator 34 and the second radiator 35 are symmetric with respect to the rotating shaft module 31;

[0065] When the foldable electronic device is in a folded state, the second radiator 35 is coupled to the first radiator 34 and generates an electric field opposite to that of the first radiator 34.

[0066] In an embodiment of the present disclosure, the antenna assembly may include a first radiator and a second radiator.

[0067] The first radiator may be located on the first housing of the foldable electronic device for radiating wireless signals in a first frequency band. The second radiator may be located on the second housing of the foldable electronic device, and the second radiator and the first radiator may be symmetrically arranged on both sides of the rotating shaft module.

[0068] In an embodiment, the first radiator may be located at any position on the first housing, and the embodiments of the present disclosure do not limit this. In an example, the first radiator is located on the side of the first housing away from the rotating shaft assembly.

[0069] The foldable electronic device may include a first housing, a second housing, and a rotating shaft module. The first housing is connected to the second housing through the rotating shaft module. The first housing and the second housing may be metal frames surrounding the middle frame of the foldable electronic device.

[0070] In an embodiment, the foldable electronic device may be an inward-foldable electronic device; in an embodiment, the foldable electronic device may also be an outward-foldable electronic device.

[0071] In an embodiment, the first radiator may be connected to the middle frame in the form of an inverted F antenna. At this time, the equivalent electrical length of the first radiator is approximately equal to a quarter wavelength, and the first radiator radiates signals in the first frequency band in the quarter-wave mode.

[0072] In an embodiment, the first frequency band may be a low-frequency band, and the low-frequency band may be from 30 KHz to 300 KHz.

[0073] In one embodiment, the second radiator may be suspended on the second housing, and the second radiator is an antenna with a suspended arrangement. It can be understood that for an antenna with a suspended arrangement, it means that there is no direct short-circuit connection relationship formed by, for example, connection ribs between the radiator of the antenna and the antenna ground, but grounding through methods such as a matching circuit, a filtering circuit, or a tuning circuit is not excluded.

[0074] In one example, when the inverted-F antenna is changed to an antenna with a suspended arrangement, the ground plane in the inverted-F antenna can be removed.

[0075] It can be understood that after the second radiator is suspended, by controlling the length of the second radiator, the equivalent electrical length of the second radiator as a coupling stub can be controlled, and thus the operating mode of the second radiator can be controlled.

[0076] In some embodiments, a suspended second radiator can be formed by processing a metal plate.

[0077] In one example, when the second radiator is an inverted-F antenna, the equivalent electrical length of the second radiator as a coupling stub can be approximately equal to a quarter wavelength; when the second radiator is changed from an inverted-F antenna to a suspended arrangement, the equivalent electrical length of the second radiator as a coupling stub can be approximately equal to a half wavelength.

[0078] When the foldable electronic device is in a folded state, the suspended second radiator has an operating mode corresponding to the equivalent electrical length, so that it can be coupled with the first radiator and generate an electric field opposite to that of the first radiator.

[0079] In one embodiment, the equivalent electrical length of the second radiator as a coupling stub can be approximately equal to a half wavelength, and the second radiator is coupled with the first radiator in the half-mode. At this time, although the impedance of the second radiator is large, the impedance change is small, so that the bandwidth corresponding to the second radiator becomes wider, realizing bandwidth coverage of the first frequency band. Therefore, compared with the related art, the embodiment of the present disclosure reduces the setting of the switch component, thereby eliminating the need to adjust the coupling frequency of the second radiator and realizing the reduction of the complexity of the coupling scheme.

[0080] In the embodiments of the present disclosure, the first radiator is disposed on the first frame of the foldable electronic device, and the second radiator is disposed on the second frame of the foldable electronic device. By suspending the second radiator symmetric to the first radiator, the equivalent electrical length of the second radiator as a coupling stub can be controlled, and then the operating mode of the second radiator can be controlled, so that when the foldable device is in a folded state, without other circuit arrangements, the second radiator can be coupled with the first radiator, and an electric field opposite to that of the first radiator can be generated on the second radiator. It can be seen that in the embodiments of the present disclosure, only by suspending the second radiator, the performance of the first radiator when radiating the first-band wireless signal can be ensured, thereby effectively reducing the complexity of the coupling scheme in the foldable electronic device.

[0081] Optionally, as Figure 3 shown, the antenna assembly further includes:

[0082] A first feeder 36 for outputting a first feeding signal;

[0083] A first switch assembly 37, a first end of the first switch assembly 37 is connected to the first feeder 36, and a second end of the first switch assembly 37 is connected to the second radiator 35;

[0084] When the foldable electronic device is in an unfolded state, the first switch assembly 37 connects the first feeder 36 and the second radiator 35, and the second radiator 35 radiates a wireless signal in the second band under the excitation of the first feeding signal; the second band is at least partially different from the first band;

[0085] When the foldable electronic device is in a folded state, the first switch assembly 37 disconnects the first feeder 36 and the second radiator 35, and the second radiator 35 is coupled to the first radiator 34.

[0086] In the embodiments of the present disclosure, the antenna assembly further includes: a first feeder and a first switch assembly.

[0087] The first end of the first switch can be connected to the first feeder, and the second end of the first switch can be connected to the second radiator. The first feeder is used to output a first feeding signal.

[0088] In some embodiments, the first switch includes: a tuning device connected to the first switch.

[0089] In one embodiment, the first switch can be a single-pole multi-throw switch.

[0090] In one embodiment, the second end of the first switch can be connected to the first end of the second radiator, and the second end of the second radiator is suspended relative to the first end of the second radiator.

[0091] In one embodiment, the first end of the second radiator is close to the upper side in the second housing, and the second end of the second radiator is close to the lower side in the second housing.

[0092] When the foldable electronic device is in the unfolded state, the first switch component can connect the first feeder and the second radiator. After the first feeding signal generated by the first feeder passes through the first switch component, it reaches the second radiator. The second radiator can radiate wireless signals in the second frequency band under the excitation of the first feeding signal.

[0093] In some embodiments, the second frequency band may be a low-frequency band.

[0094] In one embodiment, the second frequency band may be at least partially different from the first frequency band.

[0095] It can be understood that when the foldable electronic device is in the unfolded state, the first radiator radiates signals in the first frequency band, and the second radiator radiates signals in the second frequency band. The second frequency band may be at least partially different from the first frequency band, which helps the foldable electronic device to cover more frequency bands, so as to more effectively utilize the frequency band resources to improve the communication quality and user experience.

[0096] When the foldable electronic device is in the folded state, the first switch component can disconnect the first feeder and the second radiator, and the second radiator is no longer excited by the first feeding signal. At this time, the second radiator suspended can be coupled with the first radiator and used as a coupling stub of the first radiator, so as to ensure the radiation performance of the first radiator when the foldable electronic device is in the folded state.

[0097] It can be understood that the first switch component disconnects the first feeder and the second radiator, and the second radiator is no longer used as the main radiator of the antenna corresponding to the first feeder. At this time, since the second radiator is suspended, the second radiator can be coupled with the first radiator, and the second radiator begins to be used as a coupling stub of the first radiator.

[0098] In the embodiments of the present disclosure, the first switch component can control the connection between the first feeder and the second radiator, so that when the foldable electronic device is in the unfolded state, the second radiator can be used as the main radiator of the antenna corresponding to the first feeder; when the foldable electronic device is in the folded state, the second radiator can be used as a coupling stub of the first radiator, realizing the reuse of the second radiator, which is beneficial to deploying antennas in more frequency bands in the foldable electronic device.

[0099] Optionally, as Figure 3 shown, the antenna assembly further includes:

[0100] The third radiator 38 is suspended on the second housing 33; wherein, the installation position of the third radiator 38 is different from that of the second radiator 35;

[0101] The second feeder 39 is used to output a second feeding signal;

[0102] The second switch component 40, the first end of the second switch component 40 is connected to the second feeder 39, and the second end of the second switch component 40 is connected to the third radiator 38;

[0103] When the foldable electronic device is in the unfolded state, the second switch component 40 connects the second feeder 39 and the third radiator 38, and the third radiator 38 radiates a wireless signal in the third frequency band under the excitation of the second feeding signal; the third frequency band is at least partially different from the first frequency band and the second frequency band.

[0104] In the embodiment of the present disclosure, the antenna assembly further includes: a third radiator, a second feeder, and a second switch component.

[0105] The third radiator is suspended on the second housing, and the installation position of the third radiator is different from that of the second radiator. The positions of the second radiator and the third radiator can be set according to actual requirements, and the embodiment of the present disclosure does not limit this.

[0106] In one embodiment, the second radiator can be arranged on the side of the second housing away from the rotating shaft assembly, and the third radiator can be arranged on the upper side of the second housing.

[0107] The first end of the second switch can be connected to the second feeder, and the second end of the second switch can be connected to the third radiator. The second feeder is used to output a second feeding signal.

[0108] In some embodiments, the second switch includes: a tuning device connected to the second switch.

[0109] In one embodiment, the tuning device is used to adjust the phase of the circuit of the radiator.

[0110] In one embodiment, the second switch can be a single-pole multi-throw switch.

[0111] In one embodiment, the second end of the second switch can be connected to the first end of the third radiator, and the second end of the third radiator is suspended relative to the first end of the third radiator.

[0112] In one embodiment, the first end of the third radiator is close to the rotating shaft module, and the second end of the third radiator is far from the rotating shaft module.

[0113] When the foldable electronic device is in the unfolded state, the second switch assembly can connect the second feeder and the third radiator. After the second feeding signal generated by the second feeder passes through the second switch assembly, it reaches the third radiator. The third radiator can radiate wireless signals in the third frequency band under the excitation of the second feeding signal.

[0114] In some embodiments, the third frequency band may be a low-frequency band.

[0115] In one embodiment, the third frequency band may be at least partially different from the first frequency band and the second frequency band.

[0116] It can be understood that when the foldable electronic device is in the unfolded state, the first radiator radiates signals in the first frequency band, the second radiator radiates signals in the second frequency band, and the third radiator radiates signals in the third frequency band. Any two of the first frequency band, the second frequency band, and the third frequency band are at least partially different, which helps the foldable electronic device to cover more frequency bands, so as to be able to more effectively utilize the frequency band resources to improve communication quality and user experience.

[0117] In the embodiments of the present disclosure, by the third radiator connected to the second feeder, a new antenna can be set at a position different from the second radiator, so that the foldable electronic device can cover more frequency bands.

[0118] Optionally, as Figure 3 shown, the antenna assembly further includes:

[0119] The fourth radiator is disposed on the first housing 32, and the fourth radiator and the third radiator 38 are symmetric with respect to the rotation axis module 31, and are used for radiating wireless signals in the fourth frequency band; the frequency of the fourth frequency band is higher than the frequency of any one of the first frequency band, the second frequency band, and the third frequency band;

[0120] When the foldable electronic device is in the folded state, the third radiator 38 is coupled to the fourth radiator and generates an electric field opposite to that of the fourth radiator.

[0121] In the embodiments of the present disclosure, the antenna assembly further includes: a fourth radiator.

[0122] The fourth radiator is disposed on the first housing and is used for radiating wireless signals in the fourth frequency band. The fourth radiator and the third radiator can be symmetrically disposed on both sides of the rotation axis module.

[0123] In one embodiment, the third radiator may be disposed on the upper side edge in the second housing, and the fourth radiator may be disposed on the upper side edge in the first housing.

[0124] In one embodiment, the fourth radiator can be connected to the middle frame in the form of an inverted-F antenna. At this time, the equivalent electrical length of the fourth radiator is approximately equal to a quarter wavelength, and the fourth radiator radiates signals in the fourth frequency band in the quarter-wave mode.

[0125] In one embodiment, the frequency of the fourth frequency band is higher than the frequency of any one of the first frequency band, the second frequency band, and the third frequency band.

[0126] In one embodiment, the first frequency band, the second frequency band, and the third frequency band can be low-frequency bands, and the fourth frequency band can be a medium-high frequency band.

[0127] It can be understood that when the foldable electronic device is in the unfolded state, the first radiator radiates signals in the first frequency band, the second radiator radiates signals in the second frequency band, the third radiator radiates signals in the third frequency band, and the fourth radiator radiates signals in the fourth frequency band. The frequency of the fourth frequency band can be higher than the frequency of any one of the first frequency band, the second frequency band, and the third frequency band, which helps the foldable electronic device to cover medium-high frequency antennas and low-frequency antennas simultaneously, so as to be able to more effectively utilize frequency band resources to improve communication quality and user experience.

[0128] When the foldable electronic device is in the folded state, the third radiator arranged in suspension has a working mode corresponding to the equivalent electrical length, so that it can be coupled with the fourth radiator and generate an electric field opposite to that of the fourth radiator.

[0129] In some embodiments, when the foldable electronic device is in the folded state, the second switch component can disconnect the second feeder and the third radiator, and the third radiator is no longer excited by the second feeding signal. At this time, the third radiator arranged in suspension can be coupled with the fourth radiator and used as a coupling stub of the fourth radiator, so as to ensure the radiation performance of the fourth radiator when the foldable electronic device is in the folded state.

[0130] It can be understood that the second switch component disconnects the second feeder and the third radiator, and the third radiator is no longer used as the main radiator of the antenna corresponding to the second feeder. At this time, since the third radiator is arranged in suspension, the third radiator can be coupled with the fourth radiator, and the third radiator begins to be used as a coupling stub of the fourth radiator.

[0131] In some embodiments, since the fourth frequency band corresponding to the fourth radiator is different from the third frequency band corresponding to the third radiator, the second switch component can connect the second feeder and the third radiator, which will not affect the use of the third radiator as a coupling stub of the fourth radiator, thereby reducing the control of the fourth radiator over the second switch component and reducing the complexity of the coupling scheme.

[0132] In an embodiment of the present disclosure, when the foldable electronic device is in the unfolded state, the third radiator can be used as the main radiator of the antenna corresponding to the second feed; when the foldable electronic device is in the folded state, the third radiator can be used as the coupling stub of the fourth radiator, realizing the multiplexing of the third radiator, which is beneficial to deploying antennas of more frequency bands in the foldable electronic device.

[0133] Optionally, as Figure 3 shown, the antenna assembly further includes:

[0134] A fifth radiator 41, located on the first housing 32, and a slit is provided between the fifth radiator 41 and the first radiator 34; for radiating wireless signals of the fifth frequency band;

[0135] The fifth frequency band is at least partially different from the first frequency band, the second frequency band, and the third frequency band.

[0136] In an embodiment of the present disclosure, the antenna assembly further includes: a fifth radiator.

[0137] The fifth radiator is used for radiating wireless signals of the fifth frequency band. The fifth radiator may be located on the first housing at a position close to the first radiator. A slit is provided between the fifth radiator and the first radiator. The fifth radiator and the first radiator can enhance the signal strength of each other.

[0138] In some embodiments, the first radiator and the fifth radiator may be connected to the middle frame in the form of an inverted F antenna. The fifth radiator is located on one side of the ground plane close to the first radiator. The ground plane of the fifth radiator is located at one end of the fifth radiator away from the first radiator.

[0139] In some embodiments, due to the limitation of the frame size of the foldable electronic device, the fifth radiating antenna may be bent. The fifth radiating antenna may be located on the lower side and the side away from the rotation axis module of the first housing.

[0140] In some embodiments, the fifth frequency band may be a low-frequency band.

[0141] In one embodiment, the fifth frequency band may be at least partially different from the first frequency band, the second frequency band, and the third frequency band.

[0142] In one embodiment, the frequency corresponding to the fifth frequency band is lower than the frequency corresponding to the fourth frequency band.

[0143] It can be understood that when the foldable electronic device is in the unfolded state, the first radiator radiates signals in the first frequency band, the second radiator radiates signals in the second frequency band, the third radiator radiates signals in the third frequency band, and the fifth radiator radiates signals in the fifth frequency band. Any two of the first frequency band, the second frequency band, the third frequency band, and the fifth frequency band are at least partially different, which helps the foldable electronic device to cover more frequency bands, thereby being able to more effectively utilize frequency band resources to improve communication quality and user experience.

[0144] In the embodiments of the present disclosure, by providing the first radiator, the second radiator, the third radiator, and the fifth radiator in the foldable electronic device, a four-input four-output antenna can be formed in the foldable electronic device.

[0145] Optionally, as Figure 3 shown, the antenna assembly further includes:

[0146] A sixth radiator 42 is located on the second housing 33. A slit is provided between the sixth radiator 42 and the second radiator 35, and the sixth radiator 42 and the fifth radiator 41 are symmetric with respect to the rotation axis module 31;

[0147] When the foldable electronic device is in the folded state, the sixth radiator 42 is coupled to the fifth radiator 41 and generates an electric field opposite to that of the fifth radiator 41.

[0148] In the embodiments of the present disclosure, the antenna assembly further includes: a sixth radiator.

[0149] The sixth radiator may be located on the second housing near the fifth radiator. A slit is provided between the sixth radiator and the second radiator, and the sixth radiator and the fifth radiator are symmetric with respect to the rotation axis module. The sixth radiator and the second radiator can enhance the signal strength of each other.

[0150] In some embodiments, the sixth radiator may be connected to the middle frame in the form of an inverted F antenna. The sixth radiator is located on one side of the floating end close to the second radiator. The ground plane of the sixth radiator is located at one end of the sixth radiator far from the second radiator.

[0151] In some embodiments, the fifth radiation antenna may be located on the lower side and the side far from the rotation axis module of the first housing; the sixth radiation antenna may be located on the lower side and the side far from the rotation axis module of the second housing.

[0152] When the foldable electronic device is in the folded state, the sixth radiator is coupled to the fifth radiator, serves as a coupling stub of the fifth radiator, and generates an electric field opposite to that of the fifth radiator.

[0153] In some embodiments, the sixth radiator is connected to the third switching component, and the third switching component includes a tuning device. The sixth radiator is to be coupled to the fifth radiator under the action of the tuning device and generate an electric field opposite to that of the fifth radiator.

[0154] In the embodiments of the present disclosure, by providing the sixth radiator, the performance of the fifth radiator when radiating the fifth-band wireless signal can be ensured when the foldable electronic device is in a folded state.

[0155] Optionally, the operating length of the second radiator is half of the wavelength of the first frequency corresponding to the first band; the first frequency is the center frequency within the first band.

[0156] In the embodiments of the present disclosure, the operating length of the second radiator can be the equivalent electrical length when the second radiator is a coupling stub of the first radiator. The second radiator can be suspended, and the operating length of the second radiator can be half of the wavelength of the first frequency corresponding to the first band; the first frequency can be the center frequency within the first band.

[0157] In one embodiment, the metal length of the second radiator can be 50 mm - 70 mm; the metal length of the first radiator can be 30 mm - 50 mm.

[0158] Optionally, the operating length of the third radiator is half of the wavelength of the second frequency corresponding to the fourth band; the second frequency is the center frequency within the fourth band.

[0159] In the embodiments of the present disclosure, the operating length of the third radiator can be the equivalent electrical length when the third radiator is a coupling stub of the fourth radiator. The third radiator can be suspended, and the operating length of the third radiator can be half of the wavelength of the second frequency corresponding to the fourth band; the first frequency can be the center frequency within the first band.

[0160] In some embodiments, the signal of the fourth band radiated by the fourth radiator, and the fourth band is a medium-high frequency band. The operating length of the fourth radiator can be shorter than that of a low-frequency antenna for radiating low-frequency signals.

[0161] In one embodiment, the metal length of the third radiator can be about 30 mm, such as 20 mm - 40 mm.

[0162] Optionally, the operating length of the sixth radiator is one-fourth of the wavelength of the third frequency corresponding to the fifth band; the third frequency is the center frequency within the fifth band.

[0163] In an embodiment of the present disclosure, the operating length of the sixth radiator may be the equivalent electrical length when the sixth radiator serves as the coupled stub of the fifth radiator. The sixth radiator may be an inverted-F antenna, and the operating length of the sixth radiator may be one-quarter of the wavelength corresponding to the third frequency in the fifth frequency band. The third frequency may be the center frequency within the fifth frequency band.

[0164] In one embodiment, the metal length of the sixth radiator may be 60 mm - 80 mm, and the metal length of the fifth radiator may be 60 mm - 80 mm.

[0165] Next, the antenna assembly in the embodiment of the present disclosure will be described with a specific example.

[0166] The embodiment of the present disclosure provides a foldable electronic device including a four-input four-output low-frequency antenna. Combining Figure 3 with the antenna assembly shown, the antenna solution of the foldable electronic device consists of the following parts:

[0167] (1) The fifth radiator 41: The fifth radiator 41 may be the radiation metal frame body of the first low-frequency (LB1) antenna, and the metal length of the fifth radiator 41 may be about 60 mm - 80 mm.

[0168] (2) The sixth radiator 42: The sixth radiator 42 may be the coupled stub on the opposite side of the LB1 antenna, and the metal length of the sixth radiator 42 may be about 60 mm - 80 mm.

[0169] (3) The first radiator 34: The first radiator may be the radiation metal frame body of the second low-frequency (LB2) antenna, and the metal length of the first radiator 34 may be about 30 mm - 50 mm.

[0170] (4) The second radiator 35: The second radiator 35 may be the coupled stub on the opposite side of the LB2 antenna or the radiation metal frame body of the fourth low-frequency (LB4) antenna. The metal length of the second radiator 35 may be about 50 mm - 70 mm. The second radiator 35 includes a first feed source 36 and a first switch assembly 37, and the first switch assembly 37 includes a tuning and matching circuit.

[0171] (5) The third radiator 38: The third radiator 38 may be the radiation metal frame body of the third low-frequency (LB3) antenna or the coupled stub on the opposite side of the MHB antenna, and the metal length of the third radiator 38 may be about 30 mm.

[0172] As Figure 3As shown, in the embodiments of the present disclosure, while maintaining the performance improvement of the folded-state LB antenna by two low-frequency coupling stubs in the related art, the second radiator 35 is changed to a floating state. At this time, the coupling mode changes from the quarter-wavelength mode to the half-wavelength mode, achieving an extended radiation bandwidth. At the same time, by using the switch component, while multiplexing the coupling stub of the LB antenna as the antenna radiator, the complexity of the tuning device in the closed state is not increased.

[0173] Figure 4 is a schematic diagram showing the coupling principle of an antenna assembly according to an exemplary embodiment. As Figure 4 shown in (a) therein, when the coupling stub in the related art operates in the quarter-wavelength mode, the radiation performance when the foldable electronic device is in the folded state can be improved.

[0174] As Figure 4 shown in (b) and (c) therein, taking the second radiator 35 arranged in a floating manner as an example, the principle of multiplexing the coupling stub as the antenna radiator is illustrated. The equivalent electrical length of the second radiator 35 as the coupling stub is near or even lower than half of the wavelength at the center frequency of the LB2 antenna (the second low-frequency antenna corresponding to the first radiator 34). At this time, the coupling mode of the second radiator 35 is the half-wavelength mode, thereby achieving coverage of the frequency band of the LB2 antenna.

[0175] The coupling end of the second radiator 35 arranged in a floating manner does not require a switch component, thereby introducing the LB4 antenna. For the LB4 antenna, when a monopole-mode antenna covers the low-frequency band of 700M - 960M in the existing clearance environment, a switch component needs to be set. At this time, the RF path of the LB4 antenna is connected in series to the original switch component of the second radiator 35, realizing the single-switch multi-coupling fusion design of the LB4 antenna.

[0176] It should be noted that the multiplexing principle of the third radiator is the same as that of the second radiator 35. For the sake of simplicity of the specification, it will not be elaborated here.

[0177] Figure 5 is a schematic diagram showing the impedance change of a coupling stub according to an exemplary embodiment. As Figure 5 shown, when the coupling mode of the second radiator is the half-wavelength mode, the impedance of the coupling stub is large. In the case where the foldable electronic device is in the folded state, the energy coupled from the main radiator to the second radiator through the two middle-frame gaps can be reduced, effectively reducing the coupling coefficient. At this time, the intensity of the reverse current on the coupling stub is greatly reduced, effectively reducing the efficiency loss introduced by the reverse current, and achieving an improvement in the radiation performance when the foldable electronic device is in the folded state.

[0178] Figure 6It is a multiplexing tuning topology diagram of a coupled stub shown according to an exemplary embodiment. As Figure 6 shown, the RF paths of the LB4 antenna, including the first RF RF1, the second RF RF2, the third RF RF3, and the fourth RF RF4, are connected in series to the switch component T1 to implement the LB4 antenna. At the same time, the radiator of the LB4 antenna can be used as the coupled stub of the LB2 antenna to achieve a single-switch multi-coupling fusion design.

[0179] Figure 7 It is a schematic diagram of the performance of a coupled stub without a switch component shown according to an exemplary embodiment. As Figure 7 shown, the upper curve is the ideal coupling state of the coupled stub without a switch component; the left curve is the actual coupling state in the 700M low-frequency band; the right curve is the actual coupling state in the 900M low-frequency band. It can be seen that the coupling performance of the suspended coupled stub is good, and the setting without a switch component does not affect the coupling performance of the coupled stub.

[0180] Figure 8 It is a schematic diagram of the performance of an antenna assembly shown according to an exemplary embodiment Figure 1 . Figure 9 It is a schematic diagram of the performance of an antenna assembly shown according to an exemplary embodiment Figure 2 . As Figure 8 shown, the solid line is the performance of the LB2 antenna when the foldable electronic device is in the folded state, and the dotted line is the performance of the LB2 antenna when the foldable electronic device is in the unfolded state. It can be seen that the suspended coupled stub can improve the radiation performance of the LB2 antenna. As Figure 9 shown, it is the radiation performance of the LB4 antenna when the foldable electronic device is in the unfolded state. It can be seen that the LB4 antenna can be used normally.

[0181] As can be seen from the above, compared with the antenna scheme in the related art, in the scheme of suspending the coupled stub, the improvement of the radiation efficiency of the antenna caused by the coupled stub can cover the entire LB antenna bandwidth, and at the same time, the original switch component is used for the wave property switching of the LB3 antenna and the LB4 antenna. Compared with the radiator in the related art that only serves as a coupled stub, this scheme not only improves the radiation performance of the entire LB antenna, but also realizes the integration of the LB3 antenna and the LB4 antenna, and can simply and efficiently implement a 5G four-input four-output low-frequency antenna.

[0182] The embodiment of the present disclosure also provides a foldable electronic device. As Figure 3 shown, the foldable electronic device includes: a rotating shaft module 31, a first housing 32, a second housing 33, and the antenna assembly described in one or more of the above embodiments.

[0183] The first housing 32 and the second housing 33 of the foldable device are connected by a rotating shaft module 31.

[0184] The antenna assembly includes: a first radiator 34 located on the first housing 32 for radiating wireless signals in a first frequency band; a second radiator 35 suspended on the second housing 33, and the first radiator 34 and the second radiator 35 are symmetric with respect to the rotating shaft module 31; when the foldable electronic device is in a folded state, the second radiator 35 is coupled to the first radiator 34 and generates an electric field opposite to that of the first radiator 34.

[0185] It can be understood that when the foldable electronic device is in a folded state, the suspended second radiator has a working mode corresponding to the equivalent electrical length, so that it can be coupled to the first radiator and generate an electric field opposite to that of the first radiator.

[0186] In the embodiment of the present disclosure, the first radiator is disposed on the first housing of the foldable electronic device, and the second radiator is disposed on the second housing of the foldable electronic device. By suspending the second radiator symmetric to the first radiator, the equivalent electrical length of the second radiator as a coupling stub can be controlled, and then the working mode of the second radiator can be controlled, so that when the foldable device is in a folded state, without other circuit arrangements, the second radiator can be coupled to the first radiator, and the second radiator can generate an electric field opposite to that of the first radiator. It can be seen that in the embodiment of the present disclosure, only by suspending the second radiator can the performance of the first radiator radiating wireless signals in the first frequency band be ensured, thereby effectively reducing the complexity of the coupling scheme in the foldable electronic device.

[0187] Figure 10 It is a block diagram of a terminal device shown according to an exemplary embodiment. For example, the terminal device 1000 may be the foldable electronic device in one or more of the above embodiments. In one embodiment, the foldable electronic device may be a mobile phone, a mobile computer, etc.

[0188] Refer to Figure 10 and the terminal device 1000 may include one or more of the following components: a processing component 1002, a memory 1004, a power supply component 1006, a multimedia component 1008, an audio component 1010, an input / output (I / O) interface 1012, a sensor component 1014, and a communication component 1016.

[0189] The processing component 1002 generally controls the overall operation of the terminal device 1000, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 1002 may include one or more processors 1020 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 1002 may include one or more modules to facilitate the interaction between the processing component 1002 and other components. For example, the processing component 1002 may include a multimedia module to facilitate the interaction between the multimedia component 1008 and the processing component 1002.

[0190] The memory 1004 is configured to store various types of data to support the operation of the terminal device 1000. Examples of such data include instructions for any application or method operating on the terminal device 1000, contact data, phone book data, messages, pictures, videos, etc. The memory 1004 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disks, or optical disks.

[0191] The power component 1006 provides power to various components of the terminal device 1000. The power component 1006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal device 1000.

[0192] The multimedia component 1008 includes a screen that provides an output interface between the terminal device 1000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 1008 includes a front camera and / or a rear camera. When the terminal device 1000 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each of the front camera and the rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0193] The audio component 1010 is configured to output and / or input audio signals. For example, the audio component 1010 includes a microphone (MIC) that is configured to receive external audio signals when the terminal device 1000 is in an operating mode such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1004 or transmitted via the communication component 1016. In some embodiments, the audio component 1010 further includes a speaker for outputting audio signals.

[0194] The I / O interface 1012 provides an interface between the processing component 1002 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a power button, and a lock button.

[0195] The sensor component 1014 includes one or more sensors for providing status assessments of various aspects of the terminal device 1000. For example, the sensor component 1014 can detect the open / closed state of the terminal device 1000, the relative positioning of components, such as the display and keypad of the terminal device 1000. The sensor component 1014 can also detect a change in the position of the terminal device 1000 or a component of the terminal device 1000, the presence or absence of user contact with the terminal device 1000, the orientation or acceleration / deceleration of the terminal device 1000, and the temperature change of the terminal device 1000. The sensor component 1014 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 1014 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 1014 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0196] The communication component 1016 is configured to facilitate communication between the terminal device 1000 and other devices in a wired or wireless manner. The terminal device 1000 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1016 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0197] In an exemplary embodiment, the terminal device 1000 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above method.

[0198] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as the memory 1004 including instructions, may be provided. The above instructions may be executed by the processor 1020 of the terminal device 1000 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, magnetic tape, a floppy disk, and an optical data storage device, etc.

[0199] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed herein. The specification and embodiments are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0200] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. An antenna assembly, characterized in that, The antenna assembly is used for a foldable electronic device, which has a first housing and a second housing connected by a rotating shaft module; The antenna assembly includes: A first radiator, located on the first housing, for radiating wireless signals in a first frequency band; A second radiator, suspended on the second housing, and the first radiator and the second radiator are symmetric with respect to the rotating shaft module; When the foldable electronic device is in a folded state, the second radiator is coupled to the first radiator and generates an electric field opposite to that of the first radiator.

2. The antenna assembly according to claim 1, wherein The antenna assembly further includes: A first feeder, for outputting a first feeding signal; A first switch component, a first end of the first switch component is connected to the first feeder, and a second end of the first switch component is connected to the second radiator; When the foldable electronic device is in an unfolded state, the first switch component connects the first feeder and the second radiator, and the second radiator radiates wireless signals in a second frequency band under the excitation of the first feeding signal; the second frequency band is at least partially different from the first frequency band; When the foldable electronic device is in a folded state, the first switch component disconnects the first feeder and the second radiator, and the second radiator is coupled to the first radiator.

3. The antenna assembly according to claim 1 or 2, characterized in that, The antenna assembly further includes: A third radiator, suspended on the second housing; wherein, the setting position of the third radiator is different from the setting position of the second radiator; A second feeder, for outputting a second feeding signal; A second switch component, a first end of the second switch component is connected to the second feeder, and a second end of the second switch component is connected to the third radiator; When the foldable electronic device is in an unfolded state, the second switch component connects the second feeder and the third radiator, and the third radiator radiates wireless signals in a third frequency band under the excitation of the second feeding signal; the third frequency band is at least partially different from the first frequency band and the second frequency band; the second frequency band is the frequency band of the wireless signals radiated by the second radiator, and the second frequency band is at least partially different from the first frequency band.

4. The antenna assembly according to claim 3, wherein, The antenna assembly further includes: A fourth radiator, arranged on the first housing, and the fourth radiator and the third radiator are symmetric with respect to the rotating shaft module, for radiating wireless signals in a fourth frequency band; the frequency of the fourth frequency band is higher than the frequency of any one of the first frequency band, the second frequency band and the third frequency band; When the foldable electronic device is in a folded state, the third radiator is coupled to the fourth radiator and generates an electric field opposite to that of the fourth radiator.

5. The antenna assembly according to claim 3, wherein The antenna assembly further includes: A fifth radiator, located on the first housing, and there is a slit between the fifth radiator and the first radiator; for radiating wireless signals in a fifth frequency band; The fifth frequency band is at least partially different from the first frequency band, the second frequency band and the third frequency band.

6. The antenna assembly according to claim 5, characterized in that, The antenna assembly further includes: The sixth radiator is located on the second housing. A slit is provided between the sixth radiator and the second radiator, and the sixth radiator and the fifth radiator are symmetric with respect to the rotation axis module. When the foldable electronic device is in a folded state, the sixth radiator is coupled to the fifth radiator and generates an electric field opposite to that of the fifth radiator.

7. The antenna assembly according to claim 1, characterized in that The operating length of the second radiator is half of the wavelength of the first frequency corresponding to the first frequency band; the first frequency is the center frequency within the first frequency band.

8. The antenna assembly according to claim 4, wherein The operating length of the third radiator is half of the wavelength of the second frequency corresponding to the fourth frequency band; the second frequency is the center frequency within the fourth frequency band.

9. The antenna assembly according to claim 6, wherein The operating length of the sixth radiator is one-fourth of the wavelength of the third frequency corresponding to the fifth frequency band; the third frequency is the center frequency within the fifth frequency band.

10. A foldable electronic device, characterized in that, Comprising: A rotation axis module, a first housing, a second housing, and an antenna assembly according to any one of claims 1 to 9; Wherein, the first housing and the second housing are connected through the rotation axis module.

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