Foldable electronic equipment

Abstract

The invention provides a foldable electronic device. The foldable electronic device comprises an antenna. The working frequency band of the antenna comprises a satellite communication frequency band. The antenna comprises a first radiator and a second radiator. A part of the conductive frame of the first shell serves as a first radiator, and a part of the conductive frame of the second shell serves as a second radiator. When the foldable electronic device is in the unfolded state, the parasitic resonance generated by the second radiator is close to the first resonance generated by the first radiator, and the radiation characteristic of the antenna in the first resonance is improved through the parasitic resonance, so that a user has better communication quality during satellite communication, and the experience of the user during satellite communication can be improved.

Description

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on December 29, 2023, with application number 202311871918.9 and application name “A Foldable Electronic Device”, the entire contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the field of wireless communications, and in particular to a foldable electronic device. Background Art

[0003] Currently, the frame of the existing terminal electronic devices is used as an antenna radiator. For example, in a satellite communication system, the frame radiator is mainly used to form a linear polarization antenna. When a user performs satellite communication, the electronic device needs to be pointed to the sky in a specific direction to complete the communication connection with the satellite.

[0004] However, for foldable electronic devices, when unfolded, the radiation direction of the antenna may be deflected, which increases the difficulty of establishing a communication connection with the satellite and greatly affects the user's communication experience. Summary of the invention

[0005] The present application provides a foldable electronic device, which includes an antenna. The antenna uses a conductive part of a frame of the foldable electronic device as a main radiator and a parasitic branch, which can enhance the user's experience when performing satellite communications.

[0006] In a first aspect, a foldable electronic device is provided, comprising: a first shell, a second shell and a floor, wherein the first shell comprises a first frame, the second shell comprises a second frame, the first frame is at least partially spaced apart from the floor, and the second frame is at least partially spaced apart from the floor; the first frame comprises a first position and a second position, the first position and the second position are located at a first side of the first frame; the second frame comprises a third position and a fourth position, the third position is located at a second side of the second frame, and based on the foldable electronic device being in an unfolded state, the first side and the second side are the top side or the bottom side of the foldable electronic device; a first rotating shaft, the first rotating shaft is located between the first shell and the second shell, and the first rotating shaft is respectively connected to the first shell and the second shell body rotation connection; and an antenna, the antenna comprising: a first radiator and a second radiator, the first radiator being the conductive part of the first frame between the first position and the second position, and the second radiator being the conductive part of the second frame between the third position and the fourth position; and a feeding circuit, the first radiator comprising a feeding point, the feeding circuit being coupled to the feeding point; a first tuning circuit, the second radiator comprising a first connection point, the first tuning circuit being coupled and connected between the first connection point and the floor; wherein, based on the foldable electronic device being in an unfolded state, the first radiator is used to generate a first resonance, the resonance frequency band of the first resonance includes a satellite communication frequency band, and wherein the first radiator, the second radiator and the first tuning circuit are used to generate a directional pattern of the antenna.

[0007] According to an embodiment of the present application, when the foldable electronic device is in an unfolded state, the feed circuit feeds an electrical signal, the first radiator generates a first resonance, and the second radiator and the first tuning circuit can be used to reduce the influence of the current on the floor on the directional pattern generated by the antenna. Since the influence of the current on the floor on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the maximum radiation direction of the directional pattern generated by the antenna when the foldable electronic device is in an unfolded state has a smaller angle with the length direction of the electronic device, which facilitates the establishment of a communication connection with the satellite. Therefore, when performing satellite communication, the foldable electronic device has good communication quality in the unfolded state, which effectively improves the user experience. In addition, since the influence of the current on the floor on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the radiation direction of the antenna will not be significantly deflected, so that the user has better communication quality when performing satellite communication, which effectively improves the user experience.

[0008] In combination with the first aspect, in some implementations of the first aspect, the first frame defines a first gap and a second gap at the first position and the second position.

[0009] According to the embodiment of the present application, the current corresponding to the first resonance is mainly generated by the first radiator, and the current is mainly concentrated on the first radiator. Multiple current modes are not generated on the floor, and it is easy to determine the maximum radiation direction of the directional pattern generated by the antenna. In one embodiment, the resonance can be understood as being generated by a line DM mode.

[0010] In combination with the first aspect, in some implementations of the first aspect, the first frame defines a first gap at the first position, and the first frame is coupled to the floor at the second position.

[0011] In combination with the first aspect, in some implementations of the first aspect, based on the foldable electronic device being in an unfolded state, the maximum radiation direction of the antenna's directional pattern is related to the second radiator and the first tuning circuit.

[0012] According to an embodiment of the present application, the first tuning circuit can be used to switch the maximum radiation direction of the directional pattern generated by the antenna. It can be understood that the first tuning circuit can make the parasitic resonance generated by the second radiator close to the first resonance by switching the equivalent electrical parameters (for example, equivalent capacitance, equivalent inductance or equivalent resistance, etc.) between the first connection point and the floor, thereby reducing the influence of the current on the floor on the maximum radiation direction of the directional pattern generated by the antenna. In one embodiment, since the influence of the current on the floor on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the maximum radiation direction of the directional pattern generated by the antenna when the foldable electronic device is in the unfolded state is greatly deflected. In one embodiment, since the influence of the current on the floor on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the maximum radiation direction of the directional pattern generated by the antenna when the foldable electronic device is in the unfolded state has a smaller angle with the length direction of the electronic device, which facilitates the establishment of a communication connection with the satellite. Therefore, when performing satellite communication, the foldable electronic device has good communication quality in the unfolded state, which effectively improves the user experience.

[0013] In combination with the first aspect, in certain implementations of the first aspect, based on the antenna operating in a satellite communication frequency band, when the foldable electronic device is in an unfolded state, the maximum radiation direction of the directional pattern generated by the antenna is a first direction, and when the foldable electronic device is in a folded state, the maximum radiation direction of the directional pattern generated by the antenna is a second direction, and the angle between the first direction and the second direction is less than or equal to 30°.

[0014] According to the embodiment of the present application, the first direction and the second direction are substantially the same. When the foldable electronic device performs satellite communication, the state of the foldable electronic device is changed (folded state or unfolded state), and the foldable electronic device has good communication quality, thereby effectively improving the user experience.

[0015] In combination with the first aspect, in some implementations of the first aspect, the first tuning circuit and the second radiator are used to generate parasitic resonance, and the frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is less than or equal to 200 MHz.

[0016] According to an embodiment of the present application, when the foldable electronic device is in an unfolded state, the feeding circuit feeds an electrical signal, the first radiator is used to generate a first resonance (the resonance frequency band of the first resonance includes the satellite communication frequency band), and the second radiator is used to generate a parasitic resonance. The parasitic resonance is close to the first resonance (the difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is less than or equal to 200MHz), and the antenna can improve the radiation characteristics at the first resonance through the parasitic resonance, so that the user has better communication quality when performing satellite communication, which effectively improves the user experience.

[0017] In combination with the first aspect, in some implementations of the first aspect, the antenna generates an efficiency pit at a first frequency point, and a frequency difference between a resonance point frequency of the first resonance and a frequency of the first frequency point is less than or equal to 200 MHz.

[0018] According to an embodiment of the present application, the coupling between the second radiator and the first radiator is weak and cannot excite the parasitic resonance well. Therefore, the pit corresponding to the parasitic resonance does not appear clearly in the S parameter diagram. However, since the parasitic resonance is partially excited by current, an obvious pit will appear in the efficiency curve (for example, radiation efficiency or system efficiency). For example, if an efficiency pit appears at the first frequency point, the first frequency point can be considered to correspond to the resonance point of the above-mentioned parasitic resonance. In one embodiment, the efficiency (for example, radiation efficiency or system efficiency) caused by the pit does not exceed 1.5dB. In one embodiment, the efficiency (for example, radiation efficiency or system efficiency) caused by the pit does not exceed 1dB.

[0019] In combination with the first aspect, in some implementations of the first aspect, based on the foldable electronic device being in an unfolded state, a difference between a resonance point frequency of the first resonance and a resonance point frequency of the parasitic resonance is less than or equal to 50 MHz.

[0020] According to an embodiment of the present application, when the resonance point of the parasitic resonance is close to the resonance point of the first resonance (the frequency difference is less than 50MHz), the coupling between the first radiator and the second radiator is strong. When the first radiator generates the first resonance, a strong current is present on the second radiator. In one embodiment, at the resonance point of the first resonance, the current generated on the first radiator and the current generated on the second radiator are in the same direction. The current generated on the first radiator and the current generated on the second radiator can form an effect similar to a current array, so that the antenna has a strong linear polarization characteristic and the antenna has a higher directivity coefficient. Since the gain is related to the directivity coefficient, the gain of the antenna can be improved due to the higher directivity coefficient, so that the foldable electronic device has better satellite communication performance.

[0021] When the resonance point of the parasitic resonance is far away from the resonance point of the first resonance (the frequency difference is greater than or equal to 50MHz, and less than or equal to 200MHz), the coupling between the first radiator and the second radiator is weakened. When the first radiator generates the first resonance, the current on the second radiator becomes relatively weak, which can stimulate the generation of partial longitudinal current on the floor, so that the antenna has the characteristic of circular polarization. In one embodiment, the resonance point frequency of the first resonance is higher than the resonance point frequency of the parasitic resonance, and the antenna has the characteristic of left-hand circular polarization. In one embodiment, the resonance point frequency of the first resonance is lower than the resonance point frequency of the parasitic resonance, and the antenna has the characteristic of right-hand circular polarization.

[0022] In combination with the first aspect, in some implementations of the first aspect, the antenna generates an efficiency pit at a first frequency point, and a frequency difference between a resonance point frequency of the first resonance and a frequency of the first frequency point is less than or equal to 50 MHz.

[0023] In combination with the first aspect, in some implementations of the first aspect, the first radiator is used to generate a main resonance, the first tuning circuit and the second radiator are used to generate a parasitic resonance, the resonance point of the parasitic resonance is located within the resonance frequency band of the main resonance, and the main resonance and the parasitic resonance together form the first resonance.

[0024] According to an embodiment of the present application, when the difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is less than 50 MHz, it can be understood that the resonance point of the parasitic resonance is located within the resonance frequency band of the first resonance, the first radiator is used to generate the main resonance, the second radiator and the first tuning circuit are used to generate the parasitic resonance, and the main resonance and the parasitic resonance together form the above-mentioned first resonance.

[0025] In combination with the first aspect, in certain implementations of the first aspect, the second frame defines a third slit and a fourth slit at the third position and the fourth position.

[0026] According to an embodiment of the present application, both ends of the second radiator are open ends, and a structure similar to a dipole antenna can be formed. In one embodiment, the second radiator can operate in a half-wavelength mode.

[0027] In combination with the first aspect, in some implementations of the first aspect, the antenna further includes a second tuning circuit, the second radiator includes a second connection point, and the second tuning circuit is coupled between the second connection point and the floor.

[0028] In combination with the first aspect, in some implementations of the first aspect, the second frame defines a third gap at the third position, and the second frame is coupled to the floor at the fourth position.

[0029] According to an embodiment of the present application, one end of the second radiator is a ground end, and the other end is an open end, so as to form a structure similar to an IFA. In one embodiment, the second radiator can operate in a quarter-wavelength mode.

[0030] In combination with the first aspect, in certain implementations of the first aspect, the second radiator includes a second connection point and a third connection point, the second radiator has a fourth gap between the second connection point and the third connection point, and the second tuning circuit is coupled and connected between the second connection point and the third connection point.

[0031] According to an embodiment of the present application, a fourth slot is provided on the second radiator, and the fourth slot can be regarded as an equivalent capacitor (e.g., a distributed capacitor) provided on the second radiator, and the equivalent capacitor can enable the second radiator to form a metamaterial structure. The second radiator having the metamaterial structure can increase the radiation aperture, and after the fourth slot is provided, the electric field is more dispersed, and the dielectric loss near the conductor is reduced, thereby effectively improving the system efficiency and radiation efficiency of the antenna. By coupling the second tuning circuit connected between the second connection point and the third connection point, the equivalent capacitance value of the fourth slot can be adjusted, thereby adjusting the radiation characteristics of the antenna (e.g., the resonance point frequency).

[0032] At the same time, the parasitic resonance of the second radiator can correspond to the quarter-wavelength mode (the second radiator can operate in the quarter-wavelength mode). Through the first resonant circuit and the fourth gap, the electrical length of the second radiator can be greater than three-eighths of the first wavelength, the current on the second radiator is in the same direction (for example, no reverse direction occurs), and the electric field between the second radiator and the ground does not reverse. The electrical length of the second radiator increases from one-quarter of the first wavelength to more than three-eighths of the first wavelength, but it still operates in the quarter-wavelength mode. In this case, the current density on the second radiator is dispersed, and the electric field density between the second radiator and the floor is weakened, thereby reducing the conductor loss and dielectric loss caused by the second radiator and the conductor and dielectric arranged around the second radiator, thereby improving the radiation characteristics of the antenna. The second radiator increases the radiation aperture, effectively improving the system efficiency and radiation efficiency of the antenna.

[0033] In combination with the first aspect, in certain implementations of the first aspect, the distance between the second connection point and the fourth gap is less than or equal to 5 mm, and / or the distance between the third connection point and the fourth gap is less than or equal to 5 mm.

[0034] In combination with the first aspect, in certain implementations of the first aspect, the second connection point is located between the third position and the fourth gap, and the third connection point is located between the fourth position and the fourth gap; the first connection point is located between the third position and the second connection point, and the distance between the second connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm; or, the first connection point is located between the fourth position and the third connection point, and the distance between the third connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm.

[0035] According to the embodiment of the present application, the radiation aperture of the second radiator is adjusted simultaneously by the first tuning circuit and the second tuning circuit, so as to achieve the parasitic resonance in the desired frequency band.

[0036] It should be understood that the first connection point can be located at any position on the second radiator, and the embodiments of the present application do not limit this. When the length of the second radiator between the first connection point and the second connection point / third connection point is less than or equal to 5 mm, the radiation aperture of the second radiator can be better adjusted to improve the radiation characteristics of the antenna.

[0037] In combination with the first aspect, in some implementations of the first aspect, based on the foldable electronic device being in an unfolded state, the fourth position is located between the second position and the third position.

[0038] According to the embodiment of the present application, the ground end (the end at the fourth position) of the second radiator may be close to the first radiator, and the open end (the end at the third position) may be far away from the first radiator.

[0039] In combination with the first aspect, in some implementations of the first aspect, the foldable electronic device may further include a third shell and a second rotation axis; wherein the second rotation axis is located between the second shell and the third shell, and the second rotation axis is rotationally connected to the second shell and the third shell respectively; or, the second rotation axis is located between the first shell and the third shell, and the second rotation axis is rotationally connected to the first shell and the third shell respectively.

[0040] According to an embodiment of the present application, the technical solution described in the above embodiment can also be applied to a foldable electronic device including three shells.

[0041] In combination with the first aspect, in certain implementations of the first aspect, the third shell includes a third frame, the third frame is at least partially spaced apart from the floor, the third frame has a fifth position and a sixth position, the fifth position is located on a third side of the third frame, based on the foldable electronic device being in an unfolded state, the first side, the second side and the third side are the same side of the foldable electronic device; the antenna also includes a third radiator and a third tuning circuit, the third radiator is the conductive portion of the third frame between the fifth position and the sixth position, the third radiator includes a fourth connection point, and the third tuning circuit is coupled and connected between the fourth connection point and the floor.

[0042] In combination with the first aspect, in certain implementations of the first aspect, based on the second rotating shaft being located between the second shell and the third shell, the first radiator is used to generate a first resonance; based on the foldable electronic device being in an unfolded state, at the resonance point of the first resonance, the current on the first radiator and the current on the second radiator are in the same direction, and the current on the first radiator and the current on the third radiator are in opposite directions.

[0043] According to the embodiment of the present application, at the resonance point where the first resonance is generated on the first radiator, the current generated on the first radiator and the current generated on the second radiator are in the same direction, and the current generated on the first radiator and the current generated on the third radiator are in opposite directions (the fifth tuning circuit can be used to generate current in this direction). When the foldable electronic device is in the unfolded state, the reverse current generated on the third radiator can weaken the current generated on the first radiator and the current generated on the second radiator can form an effect similar to a current array, thereby reducing the directivity coefficient of the antenna and making the antenna have a wider radiation beam (for example, a beam with a gain difference of less than 3dB from the maximum radiation direction).

[0044] In combination with the first aspect, in certain implementations of the first aspect, based on the second rotating shaft being located between the first shell and the third shell, the first radiator is used to generate a first resonance; based on the foldable electronic device being in an unfolded state, at the resonance point of the first resonance, the current on the first radiator, the current on the second radiator, and the current on the third radiator are in the same direction.

[0045] According to an embodiment of the present application, at the resonance point where the first resonance is generated on the first radiator, the current generated on the first radiator, the current generated on the second radiator, and the current generated on the third radiator are in the same direction. The current generated on the first radiator, the current generated on the second radiator, and the current generated on the third radiator can form an effect similar to a current array, so that the antenna has a stronger linear polarization characteristic and the antenna has a higher directivity coefficient. Since the gain is related to the directivity coefficient, the gain of the antenna can be improved due to the higher directivity coefficient, so that the foldable electronic device has better satellite communication performance.

[0046] In combination with the first aspect, in some implementations of the first aspect, based on the foldable electronic device being in a folded state, the first radiator and the second radiator at least partially overlap in a third direction, and the third direction is a thickness direction of the foldable electronic device.

[0047] According to an embodiment of the present application, the foldable electronic device is in a folded state, the first radiator and the second radiator at least partially overlap in the third direction, and when the feeding circuit feeds an electrical signal, the second radiator can couple to more energy, thereby improving the radiation characteristics of the parasitic resonance generated by the second radiator.

[0048] In combination with the first aspect, in certain implementations of the first aspect, a ratio of a size of the floor along an extension direction of the first edge when the foldable electronic device is in an unfolded state to that when the foldable electronic device is in a folded state is greater than or equal to 1.8 and less than or equal to 2.2.

[0049] In combination with the first aspect, in certain implementations of the first aspect, the foldable electronic device performs at least one of the following services in the satellite communication frequency band: satellite receiving and / or sending short messages, satellite calls and / or answering calls, and satellite data. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic structural diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0051] Figure 2 It is a schematic structural diagram of the foldable electronic device 100 in the outward folded state.

[0052] Figure 3 is a schematic structural diagram of the foldable electronic device 100 in a possible unfolded state.

[0053] Figure 4 is a schematic structural diagram of the foldable electronic device 100 in a possible folded state.

[0054] Figure 5 is a schematic structural diagram of the foldable electronic device 100 in a possible partially unfolded state.

[0055] Figure 6 This is a schematic diagram of the common mode structure of an antenna provided in the present application and the corresponding current and electric field distribution.

[0056] Figure 7 This is a schematic diagram of the structure of the differential mode of another antenna provided in the present application and the corresponding current and electric field distribution.

[0057] Figure 8 It is a schematic diagram of the maximum radiation direction of the directional pattern generated by the antenna 200 in the foldable electronic device 100 provided in an embodiment of the present application.

[0058] Fig. 9 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0059] Fig.10 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0060] Fig.11 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0061] Fig.12 is a schematic diagram of a second radiator 240 provided in an embodiment of the present application.

[0062] Fig.13 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0063] Fig.14 is the S-parameter simulation result of the antenna 200 in the foldable electronic device 100.

[0064] Fig.15 1 is a simulation result of the system efficiency of the antenna 200 in the foldable electronic device 100 .

[0065] Fig.16 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided.

[0066] Fig.17It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is lower than the resonance point frequency of the first resonance.

[0067] Fig.18 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is close to the resonance point frequency of the first resonance.

[0068] Fig.19 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is greater than the resonance point frequency of the first resonance.

[0069] Fig. 20 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0070] Fig.21 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided.

[0071] Fig. 22 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is lower than the resonance point frequency of the first resonance.

[0072] Fig.23 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is close to the resonance point frequency of the first resonance.

[0073] Fig.24 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is greater than the resonance point frequency of the first resonance.

[0074] Fig.25 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0075] Fig.26 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0076] Fig. 27 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided.

[0077] Fig.28 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is lower than the resonance point frequency of the first resonance.

[0078] Fig.29 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is close to the resonance point frequency of the first resonance.

[0079] Fig.30 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is greater than the resonance point frequency of the first resonance.

[0080] Fig.31 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0081] Fig.32 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0082] Fig.33 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0083] Fig.34 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided.

[0084] Fig.35 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is provided.

[0085] Fig.36 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0086] Fig.37 yes Fig.36 The directional pattern of the foldable electronic device 100 in the unfolded state is shown at 2.2 GHz.

[0087] Fig.38 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0088] Fig.39 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0089] Fig.40 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0090] Fig.41 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0091] Fig.42 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0092] Fig.43 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0093] Fig.44is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0094] Fig.45 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0095] The following explains the terms that may appear in the embodiments of the present application.

[0096] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0097] When used in this application, “within the range of…”, unless it is separately specified that an end value is not included, it is assumed that both end values ​​of the range are included. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0098] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the connection between different components in the circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by coupling between the gaps between two conductive parts to form an equivalent capacitor.

[0099] Component / device: includes at least one of lumped component / device and distributed component / device.

[0100] Lumped component / device: refers to the collective name for all components when the size of the component is much smaller than the wavelength relative to the circuit operating frequency. For the signal, regardless of any time, the component characteristics always remain fixed and are independent of frequency.

[0101] Distributed components / devices: Unlike lumped components, if the size of the component is similar to or larger than the wavelength relative to the circuit operating frequency, then when the signal passes through the component, the characteristics of each point of the component itself will vary due to changes in the signal. At this time, the component as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed component.

[0102] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0103] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts.

[0104] Radiator: It is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the "antenna" in a narrow sense is understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0105] The radiator may include a conductor with a specific shape and size, such as a linear or sheet shape, etc., and the present application does not limit the specific shape. In one embodiment, the linear radiator may be referred to as a linear antenna. In one embodiment, the linear radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a bracket conductor, and may also be referred to as a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted FAntenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes a circle, a rectangle, a ring, etc., and the present application does not limit the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0106] The radiator may also include a slot or a slit formed on the conductor, for example, a closed or semi-closed slot or slit formed on a grounded conductor surface. In one embodiment, a slotted or slitted radiator may be referred to as a slot antenna or a slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slit of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slit may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slit (e.g., an opening is added to a closed slot or slit) may be referred to as an open slot antenna. In some embodiments, the slot shape is a long strip. In some embodiments, the length of the slot is about half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the slot is about an integer multiple of the wavelength (e.g., one times the dielectric wavelength). In some embodiments, the slot can be fed by a transmission line connected across one or both sides thereof, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a conductive frame with both ends grounded, which can also be called a frame antenna; in this embodiment, it can be regarded as that the slot antenna or slot antenna includes a linear radiator, which is spaced apart from the floor and grounded at both ends of the radiator, thereby forming a closed or semi-closed slot or slot. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a bracket conductor with both ends grounded, which can also be called a bracket antenna.

[0107] The feed circuit is a combination of all circuits used for receiving and transmitting radio frequency signals. The feed circuit may include a transceiver and an RF front end circuit. In some cases, the "feed circuit" is understood in a narrow sense as a radio frequency chip (RFIC, Radio Frequency Integrated Circuit), and RFIC can be considered to include an RF front end chip and a transceiver. The feed circuit has the function of converting radio waves (e.g., radio frequency signals) and electrical signals (e.g., digital signals). Generally, it is considered to be part of the radio frequency.

[0108] In some embodiments, the electronic device may further include a test socket (or referred to as a radio frequency socket or a radio frequency test socket). The test socket may be used to insert a coaxial cable to test the characteristics of the radio frequency front-end circuit or the radiator of the antenna through the cable. The radio frequency front-end circuit may be considered as a circuit portion coupled between the test socket and the transceiver.

[0109] In some embodiments, the RF front-end circuit may be integrated into a RF front-end chip in the electronic device, or the RF front-end circuit and the transceiver may be integrated into a RF chip in the electronic device.

[0110] It should be understood that any two of the first / second / ...Nth feeding circuits in the present application may share the same transceiver, for example, transmitting signals through a radio frequency channel in a transceiver (for example, a port (pin) of a radio frequency chip); and may also share a radio frequency front-end circuit, for example, processing signals through a tuning circuit or amplifier in a radio frequency front-end.

[0111] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuits in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0112] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between a feed circuit and a corresponding radiator. In one embodiment, the matching circuit is coupled between a test socket and a radiator. Typically, a matching circuit is a combination of circuits coupled between a radiator and a floor. In one embodiment, the matching circuit may include a tuning circuit and / or an electronic component, and the tuning circuit may be an electronic component used to switch the coupling connection of the radiator. The matching circuit has the functions of impedance matching and / or frequency tuning. Typically, it is considered to be a part of the antenna.

[0113] The grounding structure / feeding structure may include a connector, such as a metal spring, and the radiator is coupled to the floor through the grounding structure / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure may include a transmission line / feeding line, and the grounding structure may include a grounding line.

[0114] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator cannot be narrowly understood as an end point or end that is physically disconnected from other radiators, and can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end / point" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feeding end / feeding point may be a coupling area on the antenna radiator that is coupled to a feeding structure or a feeding circuit (for example, an area facing a part of the feeding circuit). For another example, the grounding end / grounding point may be a connection / coupling area on the antenna radiator that is coupled to a grounding structure or a grounding circuit. Open end, closed end: In some embodiments, the open end and the closed end are, for example, relative to whether they are grounded. The closed end is grounded and the open end is not grounded. In some embodiments, the open end and the closed end are, for example, relative to other conductors. The closed end is electrically connected to other conductors, and the open end is not electrically connected to other conductors. In one embodiment, the open end may also be referred to as a floating end, a free end, an open end, or an open circuit end. In one embodiment, the closed end may also be referred to as a ground end or a short circuit end. It should be understood that in some embodiments, other conductors may be coupled and connected through the open end to transfer coupling energy (which may be understood as transferring current).

[0115] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end, etc., can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by coupling electronic devices (for example, capacitors, inductors, etc.) through the closed end. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0116] In some embodiments, the "open end" can also be understood from the perspective of current distribution. The open end or suspended end, etc., can be understood as a point with smaller current on the radiator, or as a point with larger electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the smaller current point / larger electric field point.

[0117] It should be understood that coupling the radiator end at a gap (from the perspective of the structure of the radiator, it is similar to a radiator at an opening of an open end or a suspended end) with electronic devices (for example, capacitors, inductors, etc.) can make the radiator end a point with larger current / smaller electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0118] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feeder line / feeder branch and / or the grounding line / grounding branch, but is fed and / or grounded through indirect coupling.

[0119] It should be understood that the "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator can be, for example, a radiator disposed on the inner surface of the insulating back cover.

[0120] The current same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side is the same direction / reverse direction. For example, when stimulating a distributed current in the same direction on a conductor that is bent or annular (for example, the current path is also bent or annular), it should be understood that, for example, the main current stimulating on the conductors on both sides of the annular conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) is opposite in direction, but it still belongs to the definition of the distributed current in the same direction in the embodiments of the present application. In one embodiment, the current same direction on a conductor may refer to the current on the conductor having no reverse point. In one embodiment, the current reverse on a conductor may refer to the current on the conductor having at least one reverse point. In one embodiment, the current same direction on two conductors may refer to the current on both conductors having no reverse point and flowing in the same direction. In one embodiment, the current reverse on two conductors may refer to the current on both conductors having no reverse point and flowing in opposite directions. The current same direction / reverse direction on multiple conductors can be understood accordingly.

[0121] Resonance / resonance frequency: The resonance frequency is also called the resonance frequency. The resonance frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0122] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0123] Communication frequency band / working frequency band: Regardless of the type of antenna, it always works within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has a working frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the working frequency band of the antenna includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna.

[0124] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may cover one or more operating frequency bands of the antenna.

[0125] Electrical length: It can refer to the ratio of physical length (ie mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0126]

[0127] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0128] Wavelength: or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0129] It should be understood that the wavelength of the radiation signal in the air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×108 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Among them, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" may also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0130] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0131] Antenna radiation efficiency: refers to the ratio of the power radiated by the antenna into space (i.e. the power of the electromagnetic wave part that is effectively converted) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power and the ohmic loss power of the metal and / or the dielectric loss power. The radiation efficiency is a value that measures the radiation ability of the antenna. Metal loss and dielectric loss are both factors that affect the radiation efficiency.

[0132] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0133] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmit power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0134] Antenna return loss can be represented by the S11 parameter, which is one of the S parameters. S11 represents the reflection coefficient, which can characterize the antenna transmission efficiency. The S11 parameter is usually a negative number. The smaller the S11 parameter is, the smaller the antenna return loss is, and the less energy is reflected back by the antenna itself, which means that more energy actually enters the antenna, and the higher the antenna system efficiency is; the larger the S11 parameter is, the greater the antenna return loss is, and the lower the antenna system efficiency is.

[0135] It should be noted that in engineering, the S11 value is generally -6dB as the standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or that the antenna has good transmission efficiency.

[0136] Antenna pattern: also called radiation pattern. It refers to the graph of the relative field strength (normalized modulus) of the antenna radiation field changing with direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular plane patterns in the direction of maximum radiation of the antenna.

[0137] Antenna radiation patterns usually have multiple radiation beams. The radiation beam with the strongest radiation intensity is called the main lobe, and the remaining radiation beams are called side lobes or side lobes. Among the side lobes, the side lobe in the opposite direction of the main lobe is also called the back lobe.

[0138] Directivity: Also known as the directivity of an antenna. It refers to the ratio of the maximum power density to the average value on the antenna pattern at a certain distance from the antenna (far field), which is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of an antenna. The larger the directivity, the more energy the antenna radiates in a certain direction, and the more concentrated the energy radiation.

[0139] Antenna gain: It is used to characterize the degree to which the antenna radiates the input power. Generally, the narrower the main lobe of the antenna pattern and the smaller the side lobe, the higher the antenna gain.

[0140] Polarization direction of the antenna: At a given point in space, the electric field strength E (vector) is a function of time t. As time goes by, the endpoints of the vector periodically draw a trajectory in space. If the trajectory is straight and perpendicular to the ground, it is called vertical polarization. If it is horizontal to the ground, it is called horizontal polarization. If the trajectory is an ellipse or a circle, when observed along the propagation direction, it rotates in the right hand or clockwise direction over time, which is called right-hand circular polarization (RHCP). If it rotates in the left hand or counterclockwise direction over time, it is called left-hand circular polarization (LHCP).

[0141] Ground (GND): can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "GND" can be used for grounding components in electronic devices. In one embodiment, "ground" can be a grounding layer of a circuit board of an electronic device, or a grounding plate formed by a frame of an electronic device, or a grounding metal layer formed by a metal film under a screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0142] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. It will be appreciated by those skilled in the art that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0143] Grounding: refers to coupling with the above-mentioned ground / floor in any way. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding (or physical ground) at a specific position on the frame through some structural parts of the middle frame. In one embodiment, grounding can be achieved through device grounding, such as grounding through devices such as capacitors / inductors / resistors connected in series or in parallel (or device ground).

[0144] The technical solution of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0145] Figure 1 1 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application. The foldable electronic device 100 may be a mobile phone, a tablet computer, an e-reader, a laptop computer, a wearable device such as a watch, or other electronic device with a folding function. Figure 1 The illustrated embodiment is described by taking a foldable mobile phone as an example.

[0146] refer to Figure 1 The foldable electronic device 100 may include a flexible display screen 110, a first frame 121, a first cover 122, a second frame 123, a second cover 124, and a hinge 125. In some embodiments, the first frame 121, the first cover 122, the second frame 123, and the second cover 124 may form a first shell 126 and a second shell 127 that support the flexible display screen 110. In other embodiments, at least one of the first cover 122 and the second cover 124 may include a display screen.

[0147] Figure 1The dot matrix pattern filled in the figure can schematically represent the flexible display screen 110. The flexible display screen 110 can have the characteristics of strong flexibility and bendability, and can provide users with a new interaction method based on the bendable characteristics. The display panel of the flexible display screen 110 can, for example, adopt any one of a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a quantum dot light-emitting diode (QLED), etc., and the embodiments of the present application are not limited to this.

[0148] The flexible display screen 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 hinge 125. The foldable display portion 113 may be connected between the first display portion 111 and the second display portion 112.

[0149] 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 also surround the outer periphery of the first display portion 111. The first display portion 111 may be arranged parallel to and spaced from the first cover 122, and the first display portion 111 and the first cover 122 may be located on both sides of the first frame 121. The space between the first display portion 111 and the first cover 122 may be used to place components of the foldable electronic device 100, such as an antenna, a circuit board assembly, and the like.

[0150] 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 also surround the outer periphery of the second display portion 112. The second display portion 112 may be arranged in parallel and spaced apart from the second cover 124, and the second display portion 112 and the second cover 124 may be located on both sides of the second frame 123. The space between the second display portion 112 and the second cover 124 may be used to place components of the foldable electronic device 100, such as an antenna, a circuit board assembly, etc.

[0151] In one embodiment provided in the present application, the cover body and the frame may be two parts of the shell of the foldable electronic device 100, and the cover body and the frame may be connected, and the form of the connection may not belong to assembly methods such as snap-on, gluing, welding, riveting, clearance fit, etc. The connection relationship between the cover body and the frame is usually difficult to separate. In another embodiment provided in the present application, the cover body and the frame may be two different components. By assembling the cover body and the frame together, the shell of the foldable electronic device 100 can be formed.

[0152] The frame can at least partially serve as an antenna radiator to receive / transmit radio frequency signals, and there can be a gap between this portion of the frame serving as the radiator and other portions of the cover, thereby ensuring that the antenna radiator has a good radiation environment. In one embodiment, the cover can be provided with a gap at this portion of the frame serving as the radiator to facilitate the radiation of the antenna.

[0153] The antenna of the electronic device 100 can also be arranged in the frame. When the frame of the electronic device 100 is a non-conductive material, the antenna radiator can be located in the electronic device 100 and arranged along the frame. For example, the antenna radiator is arranged close to the frame to minimize the volume occupied by the antenna radiator and is closer to the outside of the electronic device 100 to achieve better signal transmission effect. It should be noted that the antenna radiator is arranged close to the frame means that the antenna radiator can be arranged close to the frame, or it can be arranged close to the frame, for example, there can be a certain small gap between the antenna radiator and the frame.

[0154] The antenna of the electronic device 100 may also be disposed in the housing, such as a bracket antenna, a millimeter wave antenna, etc. ( Figure 1 ). The clearance of the antenna disposed in the housing can be obtained by a slit / opening on any one of the cover, and / or the frame, and / or the display screen, or by a non-conductive gap / aperture formed between any of them, and the clearance setting of the antenna can ensure the radiation performance of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive component in the electronic device 100, and the antenna radiates signals to the external space through the non-conductive area. In one embodiment, the antenna can be in the form of an antenna based on a flexible printed circuit (FPC), an antenna based on laser direct structuring (LDS), or a microstrip disk antenna (MDA). In one embodiment, the antenna can also be a transparent structure embedded in the display screen of the electronic device 100, so that the antenna is a transparent antenna unit embedded in the display screen of the electronic device 100.

[0155] The foldable electronic device 100 may also include a printed circuit board PCB (not shown in the figure). The PCB is arranged in the cavity formed by the cover body. Among them, the PCB can use a flame retardant material (FR-4) dielectric board, a Rogers dielectric board, a mixed dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a flame retardant material grade, and the Rogers dielectric board is a high-frequency board. Electronic components, such as radio frequency chips, etc., are carried on the PCB17. In one embodiment, a metal layer can be provided on the printed circuit board PCB. The metal layer can be used for grounding the electronic components carried on the printed circuit board PCB, and can also be used for grounding other components, such as a bracket antenna, a frame antenna, etc. The metal layer can be called a floor, a grounding plate, or a grounding layer. In one embodiment, the metal layer can be formed by etching metal on the surface of any layer of the dielectric board in the PCB. In one embodiment, the metal layer for grounding can be provided on the printed circuit board PCB on one side close to the flexible display screen 110. In one embodiment, the edge of the PCB can be regarded as the edge of its grounding layer. The electronic device 100 can also have other floors / grounding plates / grounding layers, as described above, which will not be repeated here.

[0156] The rotating shaft 125 can be connected between the first housing 126 and the second housing 127. Under the action of the rotating shaft 125, the first housing 126 and the second housing 127 can be moved closer to each other or farther away from each other. Accordingly, the first display portion 111 of the flexible display screen 110 and the second display portion 112 of the flexible display screen 110 can be moved closer to each other or farther away from each other, so that the flexible display screen 110 can be folded or unfolded.

[0157] In one example, the rotating shaft 125 may include, for example, a main shaft, a first connecting component, and a second connecting component. The first connecting component may be fixed to the first cover 122, and the second connecting component may be fixed to the second cover 124. The first connecting component and the second connecting component may rotate relative to the main shaft. The mutual movement of the first connecting component and the second connecting component may drive the mutual movement of the first shell 126 and the second shell 127, thereby realizing the opening and closing function of the foldable electronic device 100.

[0158] Figure 1 The foldable electronic device 100 is currently in the unfolded state. In the unfolded state, the angle between the first housing 126 and the second housing 127 can be approximately 180°. The flexible display screen 110 can be in the following state: Figure 1 Shown in expanded state.

[0159] Figure 2 A possible folding state of the foldable electronic device 100 is shown. Figure 2The foldable electronic device 100 is shown in an outward folded state (the outward folded state may be simply referred to as an external folded state). Figure 2 The folded outward state shown can be, for example, a left-right folded outward state or an up-down folded outward state. Figure 1 and Figure 2 , describing a possible folding state of the foldable electronic device 100.

[0160] In the embodiment of the present application, the foldable electronic device 100 being in a folded state may mean that the foldable electronic device 100 is currently bent, and the bending degree of the foldable electronic device 100 reaches the maximum. At this time, the first cover 122 and the second cover 124 may be approximately parallel, spaced from each other, and arranged 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 shell 126 and the second shell 127 are accommodated in the space surrounded by the flexible display screen 110; the first display portion 111, the first shell 126, the second shell 127, and the second display portion 112 are stacked in sequence. Similarly, the first display portion 111 and the second display portion 112 may be approximately parallel, spaced from each other, and the spacing distance between the first cover 122 and the second cover 124 is less than the spacing 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.

[0161] Combination Figure 1 and Figure 2 When the foldable electronic device 100 is in the outward folded state, the first cover 122 and the second cover 124 can be close to each other, and the first display portion 111 and the second display portion 112 can be close to each other. The first display portion 111, the second display portion 112 and the foldable display portion 113 can form a housing area for accommodating the first cover 122, the second cover 124, and the rotating shaft 125. In other words, the first cover 122, the second cover 124, and the rotating shaft 125 can be accommodated in the interval space between the first display portion 111 and the second display portion 112.

[0162] It should be understood that the foldable electronic device 100 can be folded inward (the inward folding state can be referred to as the inward folding state). When the foldable electronic device 100 is in the inward folding state, the first cover 122 and the second cover 124 can be close to each other, and the first display portion 111 and the second display portion 112 can be close to each other. The first cover 122, the second cover 124 and the rotating shaft 125 can form a housing area for accommodating the first display portion 111, the second display portion 112, and the foldable display portion 113. In other words, the first display portion 111, the second display portion 112, and the foldable display portion 113 can be accommodated in the interval space between the first cover 122 and the second cover 124.

[0163] The foldable electronic device 100 can switch 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 can display a relatively large screen to increase the viewing range of the user.

[0164] The foldable electronic device 100 may further include a third housing 128 and a rotating shaft 129. Figure 3 As shown. The hinge 129 can be connected between the third housing 128 and the second housing 127. The third housing 128 and the second housing 127 can be close to each other or away 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 while maintaining the same screen size in the unfolded state.

[0165] And in Figure 3 In the foldable electronic device 100 shown, since it has three foldable parts (a first shell 126, a second shell 127 and a third shell 128), the foldable electronic device 100 has three forms: 1. unfolded state; 2. folded state; 3. partially unfolded state.

[0166] 1. If Figure 3 , which is a possible unfolded state of the foldable electronic device 100. In the unfolded state, the angle between the first housing 126, the second housing 127 and the third housing 128 may be approximately 180°. The flexible display screen 110 may be in the unfolded state.

[0167] 2. If Figure 4 , which is a possible folding state (three-folding state) of the foldable electronic device 100. In the folded state, the first housing 126 and the second housing 127 rotate along the rotation axis 125, and the second housing 127 and the third housing 128 rotate along the rotation axis 129, so that the bending degree of the foldable electronic device 100 reaches the maximum. At this time, the first housing 126, the second housing 127 and the third housing 128 can be regarded as being located on different planes.

[0168] It should be understood that for the sake of simplicity, Figure 4In the structure shown, the folded state of the foldable electronic device 100 is S-folded (the side of the foldable electronic device 100 is S-shaped, and the second shell 127 is located between the first shell 126 and the third shell 128). In one embodiment, the folded state of the foldable electronic device 100 can also be G-folded (the side of the foldable electronic device 100 is G-shaped, and the third shell 128 is located between the first shell 126 and the second shell 127). The embodiment of the present application does not limit the folded state of the foldable electronic device 100.

[0169] 3. If Figure 5 , which is a possible partially unfolded state (two-folded state) of the foldable electronic device 100. In the partially unfolded state, the angle between the first shell 126 and the second shell 127 can be about 180°, and the second shell 127 and the third shell 128 rotate along the rotation axis 129, so that the third shell 128 is close to the second shell 127. At this time, the first shell 126 and the second shell 127 are regarded as being located on the same plane, and the second shell 127 and the third shell 128 can be regarded as being located on different planes. In another possible partially unfolded state, the angle between the third shell 128 and the second shell 127 can be about 180°, and the first shell 126 and the second shell 127 rotate along the rotation axis 125, so that the first shell 126 is close to the second shell 127.

[0170] Figure 1 Only some components of the electronic device 100 are schematically shown, and the actual shapes, sizes and structures of these components are not limited to the following. Figure 1 limited.

[0171] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be considered as the front side, the surface where the back cover is located can be considered as the back side, and the surface where the frame is located can be considered as the side side.

[0172] It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side.

[0173] First, by Figure 6 and Figure 7 To introduce this application, two antenna modes will be involved. Among them, Figure 6 This is a schematic diagram of the common mode structure of an antenna provided in the present application and the corresponding current and electric field distribution. Figure 7 This is a schematic diagram of the structure of the differential mode of another antenna provided in the present application and the corresponding current and electric field distribution. Figure 6 and Figure 7 The antenna radiator is open at both ends, and its common mode mode and differential mode can be called line common mode mode and line differential mode mode respectively.

[0174] It should be understood that the “common-differential mode” or “CM-DM mode” in the present application refers to a line common mode mode and a line differential mode mode generated on the same radiator.

[0175] 1. Wire common mode (CM) mode

[0176] Figure 6 (a) in the figure shows that the radiator of the antenna 40 is open at both ends, and is connected to a feeding circuit (not shown) at the middle position 41. In one embodiment, the feeding form of the antenna 40 adopts symmetrical feed. The feeding circuit can be connected to the middle position 41 of the antenna 40 through a feeding line 42. It should be understood that symmetrical feeding can be understood as one end of the feeding circuit is connected to the radiator, and the other end is coupled to the floor to achieve grounding, wherein the connection point between the feeding circuit and the radiator (feeding point) is located at the center of the radiator, and the center of the radiator can be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or an area within a certain range near the above midpoint).

[0177] The middle position 41 of the antenna 40 may be, for example, the geometric center of the antenna, or the midpoint of the electrical length of the radiator. For example, the connection between the feed line 42 and the antenna 40 covers the middle position 41 .

[0178] Figure 6 (b) in FIG. 4 shows the current and electric field distribution of the antenna 40. Figure 6 As shown in (b), the current is distributed in opposite directions on both sides of the middle position 41, for example, symmetrically; the electric field is distributed in the same direction on both sides of the middle position 41. Figure 6 As shown in (b) in FIG. 4 , the current at the feeder 42 is distributed in the same direction. Based on the current distribution in the feeder 42, Figure 6 The feeding shown in (a) in FIG. 4 is called line CM feeding. Based on the reverse distribution of the current on both sides of the connection between the radiator and the feeding line 42, Figure 6 The antenna mode shown in (b) in the figure can be called a linear CM mode (it can also be simply referred to as a CM mode. For example, for a linear antenna, the CM mode refers to a linear CM mode). Figure 6 The current and electric field shown in (b) can be called the current and electric field of the line CM mode, respectively.

[0179] The current is stronger at the middle position 41 of the antenna 40 (the current is stronger near the middle position 41 of the antenna 40), and weaker at both ends of the antenna 40, such as Figure 6As shown in (b) in FIG. 4 , the electric field is weak at the middle position 41 of the antenna 40 and is strong at both ends of the antenna 40 .

[0180] 2. Line differential mode (DM) mode

[0181] like Figure 7 (a) in the figure shows that the left and right ends of the two radiators of the antenna 50 are open ends, and the feeding circuit is connected at the middle position 51. In one embodiment, the feeding form of the antenna 50 adopts anti-symmetrical feed. One end of the feeding circuit is connected to one of the radiators through the feeding line 52, and the other end of the feeding circuit is connected to the other radiator through the feeding line 52. The middle position 51 can be the geometric center of the antenna 50, or the gap formed between the radiators.

[0182] It should be understood that the "center antisymmetric feeding" mentioned in this application can be understood as that the positive and negative poles of the feeding unit are respectively connected to two connection points near the above-mentioned midpoint of the radiator. In one embodiment, the positive and negative poles of the feeding unit output signals with the same amplitude and opposite phases, for example, the phase difference is 180°±10°.

[0183] Figure 7 (b) in FIG. 5 shows the current and electric field distribution of the antenna 50. Figure 7 As shown in (b) of FIG. 5 , the current is distributed in the same direction on both sides of the middle position 51 of the antenna 50, for example, in an anti-symmetrical distribution; and the electric field is distributed in opposite directions on both sides of the middle position 51. Figure 7 As shown in (b) in FIG. 5 , the current at the feeder 52 presents a reverse distribution. Based on the reverse distribution of the current at the feeder 52, Figure 7 The feeding shown in (a) in FIG. 5 is called line DM feeding. Based on the fact that the current is distributed in the same direction on both sides of the connection between the radiator and the feeding line 52, Figure 7 The antenna mode shown in (b) can be called a linear DM mode (can also be simply referred to as a DM mode. For example, for a linear antenna, the DM mode refers to a linear DM mode). Figure 7 The current and electric field shown in (b) can be respectively referred to as the current and electric field of the line DM mode. It should be understood that based on the current being distributed in the same direction on both sides of the connection between the radiator and the feeder line 52, Figure 7 The antenna mode shown in (b) may also be referred to as a half antenna mode, or a half wavelength mode, or simply a half mode.

[0184] In one embodiment, in the online DM mode, or the half mode, the current is stronger at the middle position 51 of the antenna 50 (the larger current point is located near the middle position 51 of the antenna 50), and weaker at both ends of the antenna 50, such as Figure 7 As shown in (b) in FIG. 5 , the electric field is weak at the middle position 51 of the antenna 50 and is strong at both ends of the linear antenna 50 .

[0185] It should be understood that the antenna radiator can be understood as a metal structure that generates radiation, and the number of the metal structure can be one, such as Figure 6 As shown, or, it can be two pieces, such as Figure 7 As shown, it can be adjusted according to actual design or production needs. For example, for the line CM mode, it can also be Figure 7 As shown in the figure, two radiators are used, and the two ends of the two radiators are arranged opposite to each other and separated by a gap. A symmetrical feeding method is adopted at the two ends close to each other. For example, the same feed source signal is fed into the two ends close to each other, and the same Figure 6 The antenna structure shown in FIG. 1 has a similar effect. Correspondingly, for the line DM mode, it can also be Figure 6 As shown in the figure, a radiator is used, two feeding points are set at the middle position of the radiator and an antisymmetric feeding method is adopted. For example, if two symmetrical feeding points on the radiator are fed with signals with the same amplitude and opposite phases respectively, the same power supply as in the embodiment of the present invention can be obtained. Figure 7 The antenna structure shown has a similar effect.

[0186] 3. Line CM-DM mode

[0187] Above Figure 6 and Figure 7 It is shown that when both ends of the radiator are open, a line CM mode and a line DM mode are generated by using different feeding methods.

[0188] When the antenna is fed in an asymmetric way (the feeding point is offset from the middle of the radiator, including side feeding or offset feeding), or the grounding point of the radiator (where it is coupled with the floor) is asymmetric (the grounding point is offset from the middle of the radiator), the antenna can simultaneously generate the first resonance and the second resonance, corresponding to the line CM mode and the line DM mode, respectively. For example, the first resonance corresponds to the line CM mode, and the current and electric field distribution are as follows: Figure 6 The second resonance corresponds to the line DM mode, and the current and electric field distribution are shown in (b). Figure 7 As shown in (b) in .

[0189] Figure 8 It is a schematic diagram of the maximum radiation direction of the directional pattern generated by the antenna 200 in the foldable electronic device 100 provided in an embodiment of the present application.

[0190] It should be understood that for the sake of simplicity, the foldable device 100 is described as including only the first housing 201 and the second housing 202. The first housing 201 and the second housing 202 can be rotatably connected to the rotating shaft 203.

[0191] like Figure 8 As shown in (a) in the figure, in the folded state, the maximum radiation direction of the directional pattern generated by the antenna 200 is the top direction of the foldable electronic device 100 (for example, the y direction).

[0192] like Figure 8 As shown in (b), in the unfolded state, due to the increase in the size of the floor 300 in the x-direction, the current on the floor 300 will affect the maximum radiation direction of the directional pattern generated by the antenna 200, causing it to deviate from the top direction (e.g., the y-direction) (e.g., deflect toward the x-direction).

[0193] When the user conducts satellite communication, the electronic device needs to point to the satellite in a specific orientation to achieve star alignment (establish a communication connection with the satellite). When the foldable electronic device 100 is in the unfolded state, the maximum radiation direction of the directional pattern generated by the antenna 200 deviates from the top direction of the foldable electronic device 100 (for example, the y direction), and the user needs to adjust the posture of holding the foldable electronic device 100 to communicate with the satellite. Secondly, the maximum radiation direction of the directional pattern generated by the antenna 200 when the foldable electronic device 100 is in the folded state and the unfolded state is different. Therefore, when the user switches the state of the foldable electronic device 100 during satellite communication, if the user does not change the posture of holding the foldable electronic device 100, the communication quality deteriorates. In order to improve the communication quality, the user needs to adjust the posture of holding the foldable electronic device 100 so that the maximum radiation direction points to the satellite, in order to obtain better communication quality, which causes great inconvenience in use.

[0194] If, when the foldable electronic device 100 is in the unfolded state, the maximum radiation direction of the directional pattern generated by the antenna 200 basically points to the top direction of the electronic device 100 (for example, the y direction), for example, has an angle with the y direction within a predetermined angle, when performing satellite communication, it is possible to easily establish a communication connection with the satellite through the foldable electronic device 100. Secondly, if the maximum radiation direction of the directional pattern generated by the antenna 200 is the same when the foldable electronic device 100 is in the folded state and the unfolded state (for example, both are the top direction of the foldable electronic device 100 (for example, the y direction), when performing satellite communication, the state of the foldable electronic device 100 (folded state or unfolded state) is changed, and the user does not need to change the posture of holding the foldable electronic device 100.

[0195] An embodiment of the present application provides a foldable electronic device, which includes an antenna. The antenna uses a conductive part of a frame of the foldable electronic device as a main radiator and a parasitic branch, which can enhance the user experience when performing satellite communications.

[0196] Fig. 9is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0197] like Fig. 9 As shown, the foldable electronic device 100 may include a first housing 201 , a second housing 202 , and a floor 300 .

[0198] It should be understood that the floor 300 described in the embodiment of the present application has different sizes in different states of the foldable electronic device 100. In one embodiment, when the foldable electronic device 100 is in a folded state, the ratio of the length to the width of the floor 300 is greater than or equal to 1.6, and less than or equal to 2.5. Among them, the width can be understood as the size of the floor 300 in the extension direction of the top edge (top edge) or the bottom edge (bottom edge) of the foldable electronic device 100. In one embodiment, when the foldable electronic device 100 is in an unfolded state, the length of the foldable electronic device 100 remains unchanged and the width increases, and the ratio of the length to the width of the floor 300 is greater than or equal to 0.8, and less than or equal to 1.5.

[0199] Among them, the width and length of the floor 300 can be understood as the dimensions of the equivalent floor formed by all metal layers or metal parts that can be equivalent to the floor (for example, the middle plate, the metal layer in the PCB, the metal layer in the display screen, etc.) in the length extension direction and the width extension direction.

[0200] The first housing 201 includes a first frame 210, at least a portion of which is spaced apart from the floor 300. The second housing 202 includes a second frame 220, at least a portion of which is spaced apart from the floor 300.

[0201] The first frame 210 includes a first position 211 and a second position 212. The first frame 210 defines a first gap and a second gap at the first position 211 and the second position 212, respectively.

[0202] In one embodiment, the width of the first gap / the second gap is greater than or equal to 0.1 mm and less than or equal to 2 mm. It should be understood that the width of the gaps provided on the frame in the embodiment of the present application can be within the above range.

[0203] The second frame 220 includes a third position 213 and a fourth position 214. The second frame 220 defines a third gap at the third position 213. In one embodiment, the second frame 220 is coupled to the floor 300 at the fourth position 214. In one embodiment, the foldable electronic device 100 is in an unfolded state, and the fourth position 214 is located between the second position 212 and the third position 213.

[0204] It should be understood that in the embodiment of the present application, the coupling connection is only described by taking electrical connection as an example. In actual production or practice, it can also be realized by indirect coupling. For the sake of brevity of discussion, it will not be described one by one. At the same time, for the sake of brevity of discussion, in the embodiment of the present application, only the fourth position 214 is located between the second position 212 and the third position 213 as an example. In actual production or design, the third position 213 can also be located between the second position 212 and the fourth position 214.

[0205] The first position 211 and the second position 212 may be located at the first side of the first frame 210, and the third position 213 may be located at the second side of the second frame 220. In one embodiment, the fourth position 214 may be located at the second side of the second frame 220. When the foldable electronic device 100 is in the unfolded state, the first side and the second side may be the same side of the foldable electronic device 100, for example, the top side or the bottom side. In one embodiment, the ratio of the dimension of the floor 300 along the extension direction of the first side when the foldable electronic device 100 is in the unfolded state to the dimension of the foldable electronic device 100 in the folded state (the width of the foldable electronic device 100) is greater than or equal to 1.8 and less than or equal to 2.2.

[0206] The foldable electronic device 100 may further include a rotating shaft 203. The rotating shaft 203 is located between the first housing 201 and the second housing 202, and the rotating shaft 203 is rotatably connected to the first housing 201 and the second housing 202, respectively, so that the first housing 201 and the second housing 202 can rotate relative to each other. In one embodiment, the floor 300 may include a first part and a second part, the first part may be located in the first housing 201, the second part may be located in the second housing 202, and the first part and the second part may be connected by the rotating shaft 203.

[0207] It should be understandable that Fig. 9In the foldable electronic device 100 shown, the rotating shaft 203 is directly connected to the first shell 201 and the second shell 202, respectively, so that the first shell 201 and the second shell 202 can rotate relative to each other. In addition, "the rotating shaft 203 is rotatably connected to the first shell 201 and the second shell 202, respectively" includes the situation that the rotating shaft 203 can be rotatably connected to the first or second shell through one or more second rotating shafts and one or more intermediate shells. For example, in one embodiment, the foldable electronic device 100 may also include a first rotating shaft and a second rotating shaft, and one or more intermediate shells located between the first rotating shaft and the second rotating shaft. The first rotating shaft is located between the first shell 201 and the intermediate shell, and the first rotating shaft is rotatably connected to the first shell 201 and the intermediate shell, respectively, so that the first shell 201 and the intermediate shell can rotate relative to each other. The second rotating shaft is located between the intermediate shell and the second shell 202, and the rotating shaft 203 is rotatably connected to the intermediate shell and the second shell 202, respectively, so that the intermediate shell and the second shell 202 can rotate relative to each other.

[0208] The foldable electronic device 100 may further include an antenna 200 . The antenna 200 includes a first radiator 230 , a second radiator 240 , a feeding circuit 250 , and a first tuning circuit 261 .

[0209] The first radiator 230 is a conductive portion of the first frame 210 between the first position 211 and the second position 212 . The second radiator 240 is a conductive portion of the second frame 220 between the third position 213 and the fourth position 214 .

[0210] The first radiator 230 includes a feeding point 251 , and the feeding circuit 250 is coupled to the feeding point 251 .

[0211] The second radiator 240 includes a first connection point 221 , and the first tuning circuit 261 is coupled between the first connection point 221 and the floor 300 .

[0212] The working frequency band of the antenna 200 may include a satellite communication frequency band. The foldable electronic device 100 is in the unfolded state, and the first radiator 230 is used to generate a first resonance, and the resonance frequency band of the first resonance includes a satellite communication frequency band. Satellite communication includes: satellite receiving and / or sending short messages (also known as short messages), satellite calling and / or answering calls, satellite data (such as surfing the Internet), and at least one communication service.

[0213] In one embodiment, the satellite communication frequency band may include some frequency bands in the Tiantong satellite system, and may include the transmit frequency band (1980MHz-2010MHz) and the receive frequency band (2170MHz-2200MHz) in the Tiantong satellite system. In one embodiment, the satellite communication frequency band may include some frequency bands in the Beidou satellite system, and may include the transmit frequency band (1610MHz-1626.5MHz) and the receive frequency band (2483.5MHz-2500MHz) in the Beidou satellite system. In one embodiment, the satellite communication frequency band may include some frequency bands in the low-orbit satellite system, and may include the transmit frequency band (2500MHz-2520MHz) and the receive frequency band (2670MHz-2690MHz) in the low-orbit satellite system. Alternatively, it may also be applied to other satellite communication systems, and the embodiments of the present application are not limited to this.

[0214] In one embodiment, when the antenna 200 works in the Tiantong satellite system (the working frequency band of the antenna 200 includes at least part of the frequency band in the Tiantong satellite system), the foldable electronic device 100 can perform voice communication through the antenna 200. In one embodiment, when the antenna 200 works in the Beidou satellite system (the working frequency band of the antenna 200 includes at least part of the frequency band in the Beidou satellite system), the foldable electronic device 100 can send or receive short messages and pictures through the antenna 200.

[0215] The first radiator 230 , the second radiator 240 and the first tuning circuit 261 are used to generate a directional pattern of the antenna. In one embodiment, the maximum radiation direction of the directional pattern of the antenna 200 is related to the second radiator 240 and the first tuning circuit 261 .

[0216] It should be understood that when the foldable electronic device 100 is in the unfolded state, the feed circuit 250 feeds an electrical signal, the first radiator 230 generates a first resonance, and the second radiator 240 and the first tuning circuit 261 can be used to reduce the influence of the current on the floor 300 on the directional pattern generated by the antenna. Since the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the maximum radiation direction of the directional pattern generated by the antenna 200 when the foldable electronic device 100 is in the unfolded state has a smaller angle with the length direction (for example, the y direction) of the foldable electronic device 100, which facilitates the establishment of a communication connection with the satellite. Therefore, when performing satellite communication, the foldable electronic device 100 has good communication quality in the unfolded state, which effectively improves the user experience. In addition, since the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the radiation direction of the antenna 200 will not be significantly deflected, so that the user has better communication quality when performing satellite communication, which effectively improves the user experience.

[0217] At the same time, the first resonance is generated by the line DM mode described in the above embodiment. Since the current generated by the line DM mode is mainly generated by the first radiator 230, the current is mainly concentrated on the first radiator 230, and multiple current modes are not generated on the floor 300, so it is easy to determine the maximum radiation direction of the directional pattern generated by the antenna 200.

[0218] Moreover, for the line CM mode, the transverse mode of the floor can be excited (accounting for more than the longitudinal mode), but the currents corresponding to the transverse modes on the floor will cancel each other out, so the system efficiency and radiation efficiency of the line CM mode are low. For the line DM mode, the radiation of the antenna in the line DM mode is mainly generated by the radiator, and the system efficiency and radiation efficiency of the line DM mode are better than those of the line CM mode.

[0219] In one embodiment, the foldable electronic device 100 is in the unfolded state, and the difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is less than or equal to 200 MHz, so that the current on the floor 300 has less influence on the maximum radiation direction of the directional pattern generated by the antenna 200.

[0220] It should be understood that the frequency difference described in the embodiments of the present application can be understood as the absolute value of the difference between the two frequencies. In one embodiment, the resonance point frequency of the first resonance can be higher than the resonance point frequency of the parasitic resonance. In one embodiment, the resonance point frequency of the first resonance can be lower than the resonance point frequency of the parasitic resonance.

[0221] It should be understood that when the foldable electronic device 100 is in the unfolded state, the feeding circuit 250 feeds an electrical signal, the first radiator 230 is used to generate a first resonance (the resonance frequency band of the first resonance includes the satellite communication frequency band), and the second radiator 240 is used to generate a parasitic resonance. The parasitic resonance is close to the first resonance (the difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is less than or equal to 200MHz), and the antenna 200 can improve the radiation characteristics at the first resonance through the parasitic resonance, so that the user has better communication quality when performing satellite communication, which effectively improves the user experience.

[0222] In one embodiment, the maximum radiation direction of the directional pattern generated by the antenna 200 when the foldable electronic device 100 is in the unfolded state is the first direction, and the maximum radiation direction of the directional pattern generated by the antenna 200 when the foldable electronic device 100 is in the folded state is the second direction. The maximum radiation directions of the directional patterns generated by the antenna 200 when the foldable electronic device 100 is in the folded state and the unfolded state are substantially the same, which can be understood as the angle between the first direction and the second direction being less than or equal to 30°.

[0223] It should be understood that the first direction and the second direction are roughly the same. When the foldable electronic device 100 performs satellite communication, the state of the foldable electronic device 100 is changed (folded state or unfolded state), and the user does not need to change the posture of holding the foldable electronic device 100, which effectively improves the user experience.

[0224] In one embodiment, when the foldable electronic device 100 is in the unfolded state, the first tuning circuit 261 can be used to switch the maximum radiation direction of the directional pattern generated by the antenna 200.

[0225] It should be understood that the first tuning circuit 261 can be used to switch the maximum radiation direction of the directional pattern generated by the antenna 200. It can be understood that the first tuning circuit 261 can make the parasitic resonance generated by the second radiator 240 close to the first resonance by switching the equivalent electrical parameters (for example, equivalent capacitance, equivalent inductance or equivalent resistance, etc.) between the first connection point 221 and the floor 300, thereby reducing the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200. Since the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200 is reduced, the maximum radiation direction of the directional pattern generated by the antenna 200 when the foldable electronic device 100 is in the unfolded state has a smaller angle with the length direction of the foldable electronic device (for example, the y direction), which facilitates the establishment of a communication connection with the satellite. Therefore, when performing satellite communication, the foldable electronic device 100 has good communication quality in the unfolded state, which effectively improves the user experience. Furthermore, since the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the maximum radiation direction of the directional pattern generated by the antenna 200 when the foldable electronic device 100 is in the folded state and the unfolded state is substantially the same. Therefore, when performing satellite communication, the user does not need to change the posture of holding the foldable electronic device 100 to change the state (folded state or unfolded state) of the foldable electronic device 100, which effectively improves the user experience.

[0226] In one embodiment, the foldable electronic device 100 is in an unfolded state, and a difference between a resonance point frequency of the first resonance and a resonance point frequency of the parasitic resonance is less than 50 MHz.

[0227] It should be understood that when the resonance point of the parasitic resonance is close to the resonance point of the first resonance (the frequency difference is less than 50 MHz), the coupling between the first radiator 230 and the second radiator 240 is strong. When the first radiator 230 generates the first resonance, the second radiator 240 has a strong current. In one embodiment, at the resonance point of the first resonance, the current generated on the first radiator 230 and the current generated on the second radiator 240 are in the same direction. The current generated on the first radiator 230 and the current generated on the second radiator 240 can form an effect similar to a current array, so that the antenna 200 has a strong linear polarization characteristic, and the antenna 200 has a higher directivity coefficient. Since the gain is related to the directivity coefficient, due to the higher directivity coefficient, the gain of the antenna 200 can be improved, so that the foldable electronic device 100 has better satellite communication performance.

[0228] At the same time, when the difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is less than 50MHz, it can be understood that the resonance point of the parasitic resonance is located within the resonance frequency band of the first resonance, the first radiator 230 is used to generate the main resonance, the second radiator 240 and the first tuning circuit 261 are used to generate the parasitic resonance, and the main resonance and the parasitic resonance together form the above-mentioned first resonance.

[0229] In one embodiment, the foldable electronic device 100 is in an unfolded state, and the difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is greater than or equal to 50 MHz and less than or equal to 200 MHz.

[0230] It should be understood that when the resonance point of the parasitic resonance is far away from the resonance point of the first resonance (the frequency difference is greater than or equal to 50 MHz and less than or equal to 200 MHz), the coupling between the first radiator 230 and the second radiator 240 is weakened. When the first radiator 230 generates the first resonance, the current on the second radiator 240 becomes relatively weak, which can stimulate the generation of part of the longitudinal current on the floor 300, so that the antenna 200 has the characteristic of circular polarization. In one embodiment, the resonance point frequency of the first resonance is higher than the resonance point frequency of the parasitic resonance, and the antenna 200 has the characteristic of left-hand circular polarization. In one embodiment, the resonance point frequency of the first resonance is lower than the resonance point frequency of the parasitic resonance, and the antenna 200 has the characteristic of right-hand circular polarization.

[0231] It should be understood that in the implementation of the present application, the coupling between the second radiator 240 and the first radiator 230 is weak and cannot excite the parasitic resonance well. Therefore, the pit corresponding to the parasitic resonance does not appear clearly in the S parameter diagram. However, since the parasitic resonance is partially excited by current, an obvious pit will appear in the efficiency curve (for example, radiation efficiency or system efficiency). For example, if an efficiency pit appears at the first frequency point, the first frequency point can be considered to correspond to the resonance point of the above-mentioned parasitic resonance. In one embodiment, the efficiency (for example, radiation efficiency or system efficiency) caused by the pit does not exceed 1.5dB. In one embodiment, the efficiency (for example, radiation efficiency or system efficiency) caused by the pit does not exceed 1dB.

[0232] In one embodiment, the foldable electronic device 100 is in a folded state, and the first radiator 230 and the second radiator 240 are adjacently arranged in a third direction (for example, no other conductor is arranged between the first radiator 230 and the second radiator 240). Fig.10 In one embodiment, the first slit / second slit of the first frame 210 is aligned with the third slit of the second frame 220 to enhance the aesthetics of the foldable electronic device 100.

[0233] The third direction may be understood as the thickness direction of the foldable electronic device 100, or, in the unfolded state, a direction perpendicular to the display screen, for example, the z direction.

[0234] It should be understood that in the embodiment of the present application, alignment can be understood as two slots at least partially overlapping in the third direction. When the two slots completely overlap in the third direction, the radiation characteristics of the parasitic resonance generated by the second radiator are optimal.

[0235] In one embodiment, the foldable electronic device 100 is in a folded state, and the parasitic resonance can also be used to improve the radiation characteristics of the first resonance (for example, radiation efficiency and system efficiency).

[0236] In one embodiment, the foldable electronic device 100 is in a folded state, and the first radiator 230 and the second radiator 240 at least partially overlap in the third direction.

[0237] It should be understood that when the foldable electronic device 100 is in a folded state, the first slit / second slit opened in the first frame 210 is aligned with the third slit opened in the second frame 220. When the feeding circuit 250 feeds in an electrical signal, the third slit can couple to more energy through the electric field at the slit opened in the first frame 210, thereby enhancing the radiation characteristics of the parasitic resonance generated by the second radiator 240.

[0238] In one embodiment, the foldable electronic device 100 is in a folded state, and the difference between the resonance point frequency of the first resonance and the resonance point frequency of the parasitic resonance is less than or equal to 200 MHz, so that the antenna 200 has better radiation characteristics (for example, radiation efficiency and system efficiency).

[0239] In one embodiment, the foldable electronic device 100 is in a folded state, and at the resonance point of the first resonance, the current on the first radiator 230 and the current on the second radiator 240 are in the same direction.

[0240] In one embodiment, the fourth position 214 can be located at the second side of the second frame 220. In one embodiment, the fourth position 214 can be located between the third position 213 and the rotation shaft 203, and the third gap is aligned with the second gap. In one embodiment, the third position 213 can be located between the fourth position 214 and the rotation shaft 203, and the third gap is aligned with the first gap.

[0241] In one embodiment, the fourth position 214 may be located at a third side of the second frame 220, and the second side and the third side intersect at an angle, such as Fig.11 In one embodiment, the third gap is aligned with the first gap.

[0242] In one embodiment, the first tuning circuit 261 is a circuit including a switch, such as Fig.12 As shown in (a) in FIG. 1 . The switch can be used to switch electronic components with different resistance values, capacitance values ​​or inductance values ​​coupled to the first connection point 221 in different circuit states. The switch can be electrically connected between the electronic component and the first connection point 221, or between the electronic component and the floor 300. Alternatively, the switch can be in an open state so that the electronic component is not coupled to the first connection point 221. Alternatively, the switch can directly couple the floor 300 to the first connection point 221, and no electronic component is provided between the floor 300 and the first connection point 221.

[0243] In one embodiment, the first tuning circuit 261 does not include a switch, and may be a circuit formed by cascading multiple electronic components, such as Fig.12 As shown in (b) in FIG. 1 , the first tuning circuit 261 can have different equivalent capacitance values ​​or equivalent inductance values ​​at different frequencies.

[0244] It should be understood that the tuning circuits in the embodiments of the present application can be understood with reference to the above description, and for the sake of brevity of discussion, they will not be described one by one.

[0245] In one embodiment, the length of the conductor portion of the second frame between the first connection point 221 and the third position 213 is less than or equal to 5 mm.

[0246] It should be understood that, since the third position 213 is provided with a third gap, there is a stronger electric field at the third gap, and when the first connection point 221 is close to the third gap, the first tuning circuit 261 has better tuning characteristics.

[0247] In one embodiment, the first frame 210 includes a fifth position 215. The first frame 210 is coupled to the floor 300 at the fifth position 215. Fig.13 The antenna 200 may further include a third radiator 260. In one embodiment, the third radiator 260 may generate a second resonance to improve the radiation characteristics (eg, radiation efficiency) of the first resonance.

[0248] In one embodiment, the resonance point frequency of the second resonance is higher than the resonance point frequency of the first resonance.

[0249] In one embodiment, the third radiator 260 may also be used to generate a second resonance.

[0250] It should be understood that in the above embodiment, only the first radiator 230 is used as the main radiation branch (including the radiator of the feeding point). In one embodiment, the third radiator 260 can also be fed with a feeding point so that the third radiator 260 generates a second resonance. In one embodiment, the feeding point of the first radiator 230 can be used to feed a radio frequency signal of a transmitting frequency band in a satellite communication frequency band. The feeding point of the third radiator 260 can be used to feed a radio frequency signal of a receiving frequency band in a satellite communication frequency band.

[0251] Fig.14 and Fig.15 yes Fig.13 The simulation results of the foldable electronic device 100 in the unfolded state are shown. Fig.14 is the S-parameter simulation result of the antenna 200 in the foldable electronic device 100. Fig.15 1 is a simulation result of the system efficiency of the antenna 200 in the foldable electronic device 100 .

[0252] It should be understood that Fig.14 and Fig.15 The simulation results shown include the simulation results when the antenna 200 does not include the second radiator 240, and the simulation results when the antenna includes the second radiator 240 and the resonance point frequency of the parasitic resonance is less than the resonance point frequency of the first resonance, the resonance point frequency of the parasitic resonance is close to the resonance point frequency of the first resonance, and the resonance point frequency of the parasitic resonance is greater than the resonance point frequency of the first resonance.

[0253] like Fig.14As shown, the antenna 200 generates resonances near 2.2 GHz and near 2.6 GHz. The resonance generated near 2.2 GHz may correspond to the first resonance in the above embodiment, and the resonance generated near 2.6 GHz may correspond to the second resonance in the above embodiment.

[0254] It should be understood that since the first radiator and the third radiator are located in the first shell and the second radiator is located in the second shell, the coupling between the second radiator and the first radiator is relatively weak, and the parasitic resonance generated by the second radiator has a weak effect on the S parameter of the first resonance (not shown in the S parameter curve).

[0255] like Fig.15 As shown, when the second radiator 240 is not provided, the system efficiency curve does not have a pit.

[0256] After setting the second radiator 240, by adjusting the electrical parameters of the second radiator (for example, the equivalent capacitance value or the equivalent inductance value of the tuning circuit), the resonance point frequency of the parasitic resonance (the pit of system efficiency) can be made smaller than the resonance point frequency of the first resonance, closer to the resonance point frequency of the first resonance, or greater than the resonance point frequency of the first resonance.

[0257] Figures 16 to 19 yes Fig.13 The directional diagram of the foldable electronic device 100 in the unfolded state at 2.2 GHz is shown. Fig.16 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided. Fig.17 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is lower than the resonance point frequency of the first resonance. Fig.18 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is close to the resonance point frequency of the first resonance. Fig.19 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is greater than the resonance point frequency of the first resonance.

[0258] like Fig.16 As shown, when the second radiator is not provided, when the foldable electronic device is in the unfolded state, the current on the floor will affect the maximum radiation direction of the directional pattern generated by the antenna, causing the maximum radiation direction to deviate from the top direction (for example, the y direction). When the second radiator is not provided, the directivity coefficient of the antenna is 3.72dBi.

[0259] After the second radiator is provided, when the foldable electronic device is in the unfolded state, the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna is reduced, so that the maximum radiation direction does not deviate from the top direction (for example, the y direction), and the radiated energy is more concentrated, such as Figures 17 to 19shown.

[0260] When the resonant point frequency of the parasitic resonance is less than the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 4.16dBi. When the resonant point frequency of the parasitic resonance is close to the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 5.08dBi. When the resonant point frequency of the parasitic resonance is greater than the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 4.64dBi.

[0261] It should be understood that the larger the directivity coefficient, the greater the proportion of energy radiated by the antenna in a certain direction, and the more concentrated the energy radiation. When the directivity coefficient of the antenna is high, the proportion of energy radiated by the antenna in the maximum radiation direction is high, and the antenna has a higher gain in this direction, so that the electronic device can have good communication performance.

[0262] Fig. 20 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0263] like Fig. 20 As shown, the second frame 220 opens a fourth gap at the fourth position 214 .

[0264] It should be understood that Fig. 20 The antenna 200 is shown with Fig. 9 The difference between the antenna 200 shown in FIG. 2 and FIG. 3 is that the fourth slot is provided at the fourth position 214. Fig. 9 In the antenna 200 shown, the second frame 220 is coupled to the floor 300 at the fourth position 214, one end of the second radiator 240 is grounded, and the other end is open, so as to form a structure similar to an IFA, and the second radiator 240 can work in a quarter-wavelength mode. Fig. 20 In the antenna 200 shown, the second frame 220 opens a fourth slit at the fourth position 214 , and both ends of the second radiator 240 are open ends, forming a dipole-like structure, and the second radiator 240 can operate in a half-wavelength mode.

[0265] In one embodiment, the antenna 200 further includes a second tuning circuit 262. The second radiator 240 includes a second connection point 222, and the second tuning circuit 262 is coupled between the second connection point 222 and the ground plane 300.

[0266] It should be understood that the second radiator 240 is coupled to the first tuning circuit 261 and the second tuning circuit 262.

[0267] In one embodiment, the length of the conductor portion of the second frame between the second connection point 222 and the fourth position 214 is less than or equal to 5 mm.

[0268] In one embodiment, when the foldable electronic device 100 is in a folded state, the third gap is aligned with the first gap, and the fourth gap is aligned with the second gap.

[0269] It should be understood that, since the fourth position 214 is provided with a fourth slit, there is a stronger electric field at the fourth slit, and when the second connection point 222 is close to the fourth slit, the second tuning circuit 262 has better tuning characteristics.

[0270] For the sake of brevity, Fig. 20 The antenna 200 is shown with Fig. 9 Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; the relative position of the first radiator 230 and the second radiator 240, etc.

[0271] Figure 21 to Figure 24 yes Fig. 20 The directional diagram of the foldable electronic device 100 in the unfolded state at 2.2 GHz is shown. Fig.21 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided. Fig. 22 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is lower than the resonance point frequency of the first resonance. Fig.23 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is close to the resonance point frequency of the first resonance. Fig.24 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is greater than the resonance point frequency of the first resonance.

[0272] like Fig.21 As shown, when the second radiator is not provided, when the foldable electronic device is in the unfolded state, the current on the floor will affect the maximum radiation direction of the directional pattern generated by the antenna, causing the maximum radiation direction to deviate from the top direction (for example, the y direction). When the second radiator is not provided, the directivity coefficient of the antenna is 3.53dBi.

[0273] After the second radiator is provided, when the foldable electronic device is in the unfolded state, the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna is reduced, so that the maximum radiation direction does not deviate from the top direction (for example, the y direction), and the radiated energy is more concentrated, such as Figure 22 to Figure 24 shown.

[0274] When the resonant point frequency of the parasitic resonance is less than the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 4.83dBi. When the resonant point frequency of the parasitic resonance is close to the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 4.73dBi. When the resonant point frequency of the parasitic resonance is greater than the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 4.86dBi.

[0275] Fig.25 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0276] like Fig.25 As shown, the second frame 220 has a third gap at the third position 213. The second frame 220 is coupled to the floor 300 at the fourth position 214. The second frame 220 has a fourth gap between the third position 213 and the fourth position 214.

[0277] It should be understood that the second radiator 240 is electrically connected to the floor 300 at the first connection point 221 through the first tuning circuit 261, so that when the second radiator 240 generates parasitic resonance, the current on the second radiator 240 is shunted in the area near the first connection point 221. Since the current is shunted in the area near the first connection point 221, the current density on the second radiator 240 can be dispersed. In one embodiment, the current distribution of the second radiator 240 is relatively more dispersed, thereby reducing the conductor loss of the second radiator 240. In one embodiment, the current distribution of the second radiator 240 is relatively more dispersed, which can increase the radiation aperture of the second radiator 240. Since the conductor loss of the second radiator 240 is reduced and the radiation aperture of the antenna 200 is increased, the system efficiency and radiation efficiency of the antenna can be improved.

[0278] At the same time, a fourth slot is provided on the second radiator 240, and the fourth slot can be regarded as an equivalent capacitor (e.g., distributed capacitor) provided on the second radiator 240, and the equivalent capacitor can form a metamaterial structure on the second radiator 240. The second radiator 240 with the metamaterial structure can increase the radiation aperture, and after the fourth slot is provided, the electric field is more dispersed, and the dielectric loss near the conductor is reduced, so that the system efficiency and radiation efficiency of the antenna 200 can be effectively improved. By coupling the second tuning circuit 262 connected between the second connection point 222 and the third connection point 223, the equivalent capacitance value of the fourth slot can be adjusted, thereby adjusting the radiation characteristics (e.g., the resonance point frequency) of the antenna 200.

[0279] It should be understood that Fig.25 The antenna 200 is shown with Fig. 9 The antenna 200 shown in FIG. 1 is different only in the position of the first connection point 221 and the fourth slot. Fig. 9 and Fig.25 In the antenna 200 shown, the second radiator 240 has a structure similar to an IFA with one end being a grounded end and the other end being an open end, and the second radiator 240 operates in a quarter-wavelength mode. Fig.25 In the antenna 200 shown in the figure, the second radiator 240 forms a metamaterial structure, and the length of the second radiator 240 is greater than Fig. 9 The length of the second radiator 240 is shown.

[0280] In one embodiment, Fig. 9 In the antenna 200 shown, the electrical length of the second radiator 240 is one quarter of the first wavelength, and the first wavelength may be a wavelength corresponding to the parasitic resonance. Fig.25 In the antenna 200 shown, the electrical length of the second radiator 240 is greater than three eighths of the first wavelength. Fig.25 In the antenna 200 shown, the parasitic resonance of the second radiator 240 can correspond to the quarter-wavelength mode. Through the first resonant circuit 261 and the fourth slot, the electrical length of the second radiator 240 can be greater than three-eighths of the first wavelength, the current on the second radiator 240 is in the same direction (for example, not reversed), and the electric field between the second radiator 240 and the ground is not reversed. The electrical length of the second radiator 240 increases from a quarter of the first wavelength to more than three-eighths of the first wavelength, but still works in the quarter-wavelength mode. In this case, the current density on the second radiator 240 is dispersed, and the electric field density between the second radiator 240 and the floor 300 is weakened, thereby reducing the conductor loss and dielectric loss caused by the second radiator 240 and the conductor and dielectric disposed around the second radiator 240, thereby improving the radiation characteristics of the antenna 200. The second radiator 240 increases the radiation aperture, effectively improving the system efficiency and radiation efficiency of the antenna 200.

[0281] The first wavelength can be understood as the vacuum wavelength corresponding to the resonance point of the parasitic resonance, or can also be understood as the vacuum wavelength corresponding to the center frequency of the resonance frequency band formed by the parasitic resonance. Since there is a certain correspondence between the vacuum wavelength and the medium wavelength, the above ratio can be converted to the medium wavelength, and this application will not repeat them one by one.

[0282] In one embodiment, the antenna 200 further includes a second tuning circuit 262. The second radiator 240 includes a second connection point 222 and a third connection point 223, and the second tuning circuit 262 is coupled between the second connection point 222 and the third connection point 223. The fourth slot is located between the second connection point 222 and the third connection point 223.

[0283] It should be understood that by coupling the second tuning circuit 262 connected between the second connection point 222 and the third connection point 223, the equivalent capacitance value of the fourth slot can be adjusted, thereby adjusting the radiation characteristics of the antenna 200 (for example, the resonance point frequency of the parasitic resonance generated by the second radiator 240).

[0284] For the sake of brevity, Fig.25 In the antenna 200 shown, only the second tuning circuit 262 coupled on both sides of the fourth slot is used as an example for explanation. In actual production or design, the antenna 200 may also not include the second tuning circuit 262, and the equivalent capacitance value of the fourth slot may be adjusted by other means.

[0285] In one embodiment, the equivalent capacitance value of the fourth slot 234 is adjusted by adjusting the parameters of the radiators on both sides of the fourth slot 234, such as Fig.26 As shown in (a) in .

[0286] The capacitance value is calculated as follows:

[0287]

[0288] Among them, ε is the dielectric constant of the medium between the two plates of the capacitor (radiators on both sides of the gap); δ is the absolute dielectric constant in a vacuum; k is the electrostatic force constant; S is the area facing the two plates, which is the area facing the edge radiators on both sides of the gap in the embodiment of the present application; d is the vertical distance between the two plates, which is the width of the fourth gap 234 in the embodiment of the present application.

[0289] For the sake of brevity, Fig.26 In the electronic device shown in (a), only the method of adjusting the equivalent capacitance value of the fourth gap 234 by changing the facing area of ​​the radiators on both sides of the fourth gap 234 and the medium filled in the fourth gap 234 is shown. In actual production or design, the equivalent capacitance value of the fourth gap 234 can also be adjusted by other methods, and the embodiments of the present application do not limit this.

[0290] The equivalent capacitance values ​​of the gaps described in the embodiments of the present application can all be adjusted in the above manner, and for the sake of brevity of discussion, they will not be described one by one.

[0291] In one embodiment, the antenna 200 further includes a second tuning circuit 262 and a third tuning circuit 263. Fig.26 As shown in (b) in .

[0292] In one embodiment, the first tuning circuit 261 may include a capacitor or an electronic component equivalent to a capacitor.

[0293] In one embodiment, the equivalent capacitance value of the first tuning circuit 261 may be less than or equal to the first threshold. The first threshold may be designed according to the resonance point frequency of the parasitic resonance generated by the second radiator 240. When the resonance point frequency of the parasitic resonance is less than or equal to 1 GHz, the first threshold is 10 pF. When the resonance point frequency of the parasitic resonance is greater than 1 GHz, the first threshold is 2 pF.

[0294] In one embodiment, the second tuning circuit 262 may include an inductor or an electronic component equivalent to a capacitor.

[0295] In one embodiment, the equivalent inductance of the second tuning circuit 262 may be less than or equal to 10 nH.

[0296] It should be understood that by designing the equivalent capacitance value of the first tuning circuit 261 and the equivalent inductance value of the second tuning circuit 262 according to the frequencies of the resonance points of different parasitic resonances, the current distribution on the second radiator 240 can be made more dispersed, the conductor loss can be reduced, and the radiation aperture of the second radiator 240 can be increased, thereby improving the radiation characteristics of the antenna (for example, radiation efficiency and system efficiency).

[0297] In one embodiment, the distance between the second connection point 222 and / or the third connection point 223 and the fourth gap is less than or equal to 5 mm.

[0298] The distance between the second connection point 222 and / or the third connection point 223 and the fourth gap can be understood as the minimum distance between the second connection point 222 and / or the third connection point 223 and the conductors on both sides of the fourth gap (the length of the second radiator 240 between the second connection point 222 and / or the third connection point 223 and the fourth gap). When the second tuning circuit 262 is electrically connected to the second connection point 222 and the third connection point 223 through a connector (e.g., a metal spring), the distance to the fourth gap can be understood as the minimum distance between the center of the portion of the connector in contact with the connection point and the conductors on both sides of the fourth gap.

[0299] In one embodiment, the second connection point 222 may be located between the fourth location 214 and the third connection point 223 .

[0300] In one embodiment, the first connection point 221 is located between the fourth position 214 and the second connection point 222. In one embodiment, the distance between the first connection point 221 and the second connection point 222 (e.g., the length of the second radiator between the first connection point 221 and the second connection point 222) is greater than or equal to 0 mm and less than or equal to 5 mm.

[0301] It should be understood that when the distance between the first connection point 221 and the second connection point 222 is equal to 0 mm, the first connection point 221 coincides with the second connection point 222. In one embodiment, one end of the first tuning circuit 261 and one end of the second tuning circuit 262 can be coupled to the second connection point 222 (first connection point 221) through the same connector.

[0302] In one embodiment, the first connection point 221 may be located between the third position 213 and the third connection point 223. In one embodiment, the distance between the first connection point 221 and the third connection point 223 (e.g., the length of the second radiator between the first connection point 221 and the third connection point 223) is greater than or equal to 0 mm and less than or equal to 5 mm.

[0303] It should be understood that when the distance between the first connection point 221 and the third connection point 223 is equal to 0 mm, the first connection point 221 coincides with the third connection point 223. In one embodiment, one end of the first tuning circuit 261 and one end of the second tuning circuit 262 can be coupled to the third connection point 223 (first connection point 221) through the same connector.

[0304] The radiation aperture of the second radiator 240 is adjusted simultaneously by the first tuning circuit 261 and the second tuning circuit 262 to achieve parasitic resonance in a desired frequency band.

[0305] It should be understood that the first connection point 221 can be located at any position on the second radiator 240, and the embodiment of the present application does not limit this. When the length of the second radiator between the first connection point 221 and the second connection point 222 / the third connection point 223 is less than or equal to 5 mm, the radiation aperture of the second radiator 240 can be better adjusted to improve the radiation characteristics of the antenna 200.

[0306] In one embodiment, the length of the second radiator 240 between the first end (the ground end, at the fourth position 214) and the fourth gap is smaller than the length of the second radiator 240 between the second end (the open end, at the third position 213) and the fourth gap.

[0307] It should be understood that the length of the radiator between one end of the radiator and the first slot can be understood as the length of the conductor portion between the end of the end and the fourth slot. For the sake of simplicity of discussion, this can be understood accordingly in the embodiments of the present application.

[0308] In one embodiment, the length of the second radiator 240 between the first end (the ground end, at the fourth position 214) of the second radiator 240 and the fourth gap is less than three-fifths of the length of the second radiator 240 between the second end (the open end, at the third position 213) of the second radiator 240 and the fourth gap.

[0309] In one embodiment, the length of the second radiator 240 between the first end (the ground end, at the fourth position 214) of the second radiator 240 and the fourth gap is less than one third of the length of the second radiator 240 between the second end (the open end, at the third position 213) of the second radiator 240 and the fourth gap.

[0310] In one embodiment, the length of the second radiator 240 between the first end (the ground end, at the fourth position 214) of the second radiator 240 and the fourth gap is less than one seventh of the length of the second radiator 240 between the second end (the open end, at the third position 213) of the second radiator 240 and the fourth gap.

[0311] It should be understood that the fourth slot can be located in a region with a larger current of the second radiator 240. The region with a larger current should be understood as the region corresponding to the second radiator 240 without a slot (for example, working in a quarter-wavelength mode). When the fourth slot is opened, the electric field strength of the second radiator 240 becomes weaker, achieving the effect of dispersing the electric field, thereby improving the system efficiency and radiation efficiency of the antenna 200.

[0312] For the sake of brevity, Fig.25 The antenna 200 is shown with Fig. 9 Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; the relative position of the first radiator 230 and the second radiator 240, etc.

[0313] Figures 27 to 30 yes Fig.25 The directional diagram of the foldable electronic device 100 in the unfolded state at 2.2 GHz is shown. Fig. 27 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided. Fig.28 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is lower than the resonance point frequency of the first resonance. Fig.29 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is close to the resonance point frequency of the first resonance. Fig.30It is a directional diagram of the foldable electronic device 100 in the unfolded state when the resonance point frequency of the parasitic resonance is greater than the resonance point frequency of the first resonance.

[0314] like Fig. 27 As shown, when the second radiator is not provided, when the foldable electronic device is in the unfolded state, the current on the floor will affect the maximum radiation direction of the directional pattern generated by the antenna, causing the maximum radiation direction to deviate from the top direction (for example, the y direction). When the second radiator is not provided, the directivity coefficient of the antenna is 3.53dBi.

[0315] After the second radiator is provided, when the foldable electronic device is in the unfolded state, the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna is reduced, so that the maximum radiation direction does not deviate from the top direction (for example, the y direction), and the radiated energy is more concentrated, such as Figures 28 to 30 shown.

[0316] When the resonant point frequency of the parasitic resonance is less than the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 5dBi. When the resonant point frequency of the parasitic resonance is close to the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 5.02dBi. When the resonant point frequency of the parasitic resonance is greater than the resonant point frequency of the first resonance, the directivity coefficient of the antenna is 5.01dBi.

[0317] Fig.31 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0318] like Fig.31 As shown, the first frame 210 is coupled to the floor 300 at the first position 211 .

[0319] It should be understood that Fig.31 The antenna 200 is shown with Fig.25 The difference between the antenna 200 shown in FIG. 2 and FIG. 3 is only the boundary condition of the first radiator 230. In the above embodiment, only an example is given in which both ends of the first radiator 230 are open ends and the first radiator 230 forms a dipole-like structure. In actual production or design, the first end of the first radiator 230 is a grounded end and the second end is an open end, forming a structure similar to an IFA, and the present application does not limit this.

[0320] In one embodiment, the antenna 200 may further include a third tuning circuit 263 and / or a fourth tuning circuit 264. Fig.32 shown.

[0321] The first radiator 230 includes a fourth connection point 224 , and the third tuning circuit 263 is coupled between the fourth connection point 224 and the floor 300 .

[0322] The first radiator 230 includes a fifth connection point 225 and a sixth connection point 226, and the fourth tuning circuit 264 is coupled and connected between the fifth connection point 225 and the sixth connection point 226. A fifth gap is formed between the fifth connection point 225 and the sixth connection point 226 in the first radiator 230.

[0323] It should be understood that the first radiator 230 is electrically connected to the floor 300 at the fourth connection point 224 through the third tuning circuit 263, so that when the first radiator 230 generates parasitic resonance, the current on the first radiator 230 is shunted in the area near the fourth connection point 224. Since the current is shunted in the area near the fourth connection point 224, the current density on the first radiator 230 can be dispersed. In one embodiment, the current distribution of the first radiator 230 is relatively more dispersed, thereby reducing the conductor loss of the first radiator 230. In one embodiment, the current distribution of the first radiator 230 is relatively more dispersed, which can increase the radiation aperture of the first radiator 230. Since the conductor loss of the first radiator 230 is reduced and the radiation aperture of the antenna 200 is increased, the system efficiency and radiation efficiency of the antenna can be improved.

[0324] At the same time, a fifth slot is provided on the first radiator 230, and the fifth slot can be regarded as an equivalent capacitor (e.g., distributed capacitor) provided on the first radiator 230, and the equivalent capacitor can form a metamaterial structure on the first radiator 230. The first radiator 230 having the metamaterial structure can increase the radiation aperture, and after the fifth slot is provided, the electric field is more dispersed, and the dielectric loss near the conductor is reduced, so that the system efficiency and radiation efficiency of the antenna 200 can be effectively improved. By coupling the fourth tuning circuit 264 connected between the fifth connection point 225 and the sixth connection point 226, the equivalent capacitance value of the fifth slot can be adjusted, thereby adjusting the radiation characteristics (e.g., the resonance point frequency) of the antenna 200.

[0325] In one embodiment, the relative position relationship among the fourth connection point 224, the fifth connection point 225, the sixth connection point 226, and the fifth gap can be understood by referring to the relative position relationship among the first connection point 221, the second connection point 222, the third connection point 223 and the fourth gap in the above embodiment. For the sake of simplicity, they will not be elaborated one by one.

[0326] For the sake of brevity, Fig.32 and Fig.31 The antenna 200 is shown with Fig.25 Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; the relative position of the first radiator 230 and the second radiator 240, etc.

[0327] Fig.33 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0328] It should be understood that in the above embodiments, only the foldable electronic device 100 including only two housings (for example, a two-fold electronic device) is used as an example for description. In actual production or design, the technical solution provided in the embodiments of the present application can also be applied to a device including multiple housings (for example, a multi-fold electronic device). Fig.33 As shown, the foldable electronic device 100 includes three shells for illustration.

[0329] like Fig.33 As shown, the foldable electronic device 100 may further include a third housing 204 and a shaft 205. The shaft 205 is located between the second housing 202 and the third housing 204, and the shaft 205 is rotatably connected to the second housing 202 and the third housing 204, respectively, so that the second housing 202 and the third housing 204 can rotate relative to each other.

[0330] It should be understood that Fig.33 The antenna 200 is shown with Fig.25 The only difference between the foldable electronic device 100 shown in the figure is the third housing 204 and the hinge 205 . Fig.33 The antenna 200 is shown with Fig.25 Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; the relative position of the first radiator 230 and the second radiator 240, etc.

[0331] Fig.34 and Fig.35 yes Fig.33 The directional diagram of the foldable electronic device 100 in the unfolded state at 2.2 GHz is shown. Fig.34 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is not provided. Fig.35 It is a directional diagram of the foldable electronic device 100 in the unfolded state when the second radiator is provided.

[0332] like Fig.34 As shown, when the second radiator is not provided, compared with the above embodiment, Fig.33 The floor size of the foldable electronic device shown in the unfolded state is larger, and the current on the floor has a greater impact on the maximum radiation direction of the directional pattern generated by the antenna, and the maximum radiation direction of the directional pattern generated by the antenna deviates from the top direction (for example, the y direction) at a greater angle. When the second radiator is not set, the directivity coefficient of the antenna is 3.77dBi.

[0333] like Fig.35 As shown, after the second radiator is set, the foldable electronic device, in the unfolded state, reduces the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna, so that the maximum radiation direction does not deviate from the top direction (for example, the y direction), the radiated energy is more concentrated, and the directivity coefficient of the antenna is 5.56dBi.

[0334] Fig.36 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0335] like Fig.36 As shown, the third shell 204 includes a third frame 310 , and at least a portion of the third frame 310 is spaced apart from the floor 300 .

[0336] The third frame 310 includes a seventh position 217 and an eighth position 218. The seventh position 217 may be located at a third side of the third frame 310. In one embodiment, the eighth position 218 may be located at a third side of the third frame 310. When the foldable electronic device 100 is in the unfolded state, the first side, the second side, and the third side may be the same side of the foldable electronic device 100, for example, the top side or the bottom side.

[0337] The antenna 200 further includes a third radiator 320 and a fifth tuning circuit 265. The third radiator 320 is a conductive portion of the third frame 310 between the seventh position 217 and the eighth position 218.

[0338] It should be understood that Fig.36 The antenna 200 is shown with Fig.33 The foldable electronic device 100 shown in FIG. 1 is different only in the third radiator 320 .

[0339] exist Fig.33 In the foldable electronic device 100 shown, the third radiator 320 is not provided (the third frame 310 does not include the seventh position 217 and the eighth position 218). The resonance point of the first resonance is generated on the first radiator 230, and the current generated on the first radiator 230 and the current generated on the second radiator 240 are in the same direction. When the foldable electronic device 100 is in the unfolded state, the current generated on the first radiator 230 and the current generated on the second radiator 240 can form an effect similar to a current array, so that the antenna 200 has a stronger linear polarization characteristic, and the antenna 200 has a higher directivity coefficient.

[0340] And in Fig.36In the foldable electronic device 100 shown, a third radiator 320 is provided. At the resonance point of the first resonance generated by the first radiator 230, the current generated on the first radiator 230 and the current generated on the second radiator 240 are in the same direction, and the current generated on the first radiator 230 and the current generated on the third radiator 320 are in opposite directions (the fifth tuning circuit 265 can be used to generate current in this direction). When the foldable electronic device 100 is in the unfolded state, the reverse current generated on the third radiator 320 can weaken the current generated on the first radiator 230 and the current generated on the second radiator 240 can form an effect similar to a current array, thereby reducing the directivity coefficient of the antenna 200, so that the antenna 200 has a wider radiation beam (for example, a beam with a gain difference of less than 3dB from the maximum radiation direction).

[0341] In one embodiment, the structure formed by the third radiator 320 may be similar to the structure formed by any one of the second radiators 240 in the above embodiments. In one embodiment, the third radiator 320 may be a structure with one end being an open end and one end being a ground end. The third frame 310 has a sixth slit at the seventh position 217 and is coupled to the floor 300 at the eighth position 218. Alternatively, the third frame 310 is coupled to the floor 300 at the seventh position 217 and has a sixth slit at the eighth position 218. In one embodiment, the third radiator 320 may be a metamaterial structure. The antenna 200 includes a sixth tuning circuit 266. The sixth tuning circuit 266 is coupled between the eighth connection point and the ninth connection point of the third radiator 320, and the third radiator 320 has a slit between the eighth connection point and the ninth connection point. In one embodiment, the third radiator 320 may be a structure with two open ends. The third frame 310 has a sixth slit and a seventh slit at the seventh position 217 and the eighth position 218.

[0342] It should be understood that the third radiator 320 and the second radiator 240 may have the same structure, for example, a structure with both ends being open ends, or a structure with one end being an open end and the other end being a ground end. Alternatively, the third radiator 320 and the second radiator 240 may have different structures, which is not limited in the embodiment of the present application and can be selected according to actual production or design.

[0343] Fig.37 yes Fig.36 The directional pattern of the foldable electronic device 100 in the unfolded state is shown at 2.2 GHz.

[0344] like Fig.37 As shown, after the second radiator is set, the foldable electronic device, in the unfolded state, reduces the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna, so that the maximum radiation direction does not deviate from the top direction (for example, the y direction).

[0345] At the same time, after the third radiator is set, the reverse current generated on the third radiator can weaken the current generated on the first radiator and the current generated on the second radiator can form an effect similar to a current array, and the directivity coefficient of the antenna is reduced to 2.1dBi.

[0346] Fig.38 It is a schematic diagram of another foldable electronic device 100 provided in an embodiment of the present application.

[0347] like Fig.38 As shown, the second frame 220 defines a third slit 233 at the third position 213. The second frame 220 is coupled to the floor 300 at the fourth position 214. The second frame 220 defines a fourth slit 234 between the third position 213 and the fourth position 214.

[0348] When the foldable electronic device 100 is in the unfolded state, the third position 213 is located between the second position 212 and the fourth position 214 .

[0349] It should be understood that Fig.38 The antenna 200 in the foldable electronic device 100 is shown as Fig.25 , Figure 31 to Figure 33 , Fig.36 The antenna 200 in the foldable electronic device 100 shown is different only in the relative position relationship between the third position 213 and the fourth position 214 with respect to the rotation axis 203 .

[0350] exist Fig.25 , Fig.26 , Figure 31 to Figure 33 , Fig.36 In the foldable electronic device 100 shown, when the foldable electronic device 100 is in the unfolded state, the fourth position 214 is located between the second position 212 and the third position 213. The fourth position 214 is closer to the rotation axis 203 than the third position 213 (the distance between the fourth position 214 and the rotation axis 203 along the second frame 220 is less than the distance between the third position 213 and the rotation axis 203 along the second frame 220). The first end of the second radiator 240 is an open end and the second end is a ground end, and the ground end of the second radiator 240 is close to the rotation axis 203.

[0351] And in Fig.38In the foldable electronic device 100 shown, when the foldable electronic device 100 is in the unfolded state, the third position 213 is located between the second position 212 and the fourth position 214. The fourth position 214 is farther from the rotation axis 203 than the third position 213 (the distance between the fourth position 214 and the rotation axis 203 along the second frame 220 is greater than the distance between the third position 213 and the rotation axis 203 along the second frame 220). The first end of the second radiator 240 is an open end and the second end is a ground end, and the open end of the second radiator 240 is close to the rotation axis 203.

[0352] Fig.38 The antenna 200 in the foldable electronic device 100 shown may also have the radiation characteristics of the antenna 200 in the above-mentioned embodiment. For example, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the radiation characteristics of the antenna 200. In one embodiment, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200. The first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200, thereby adjusting the maximum radiation direction of the directional pattern generated by the antenna 200. When the foldable electronic device 100 is in the unfolded state, the first tuning circuit 261 may be used to adjust the maximum radiation direction of the directional pattern generated by the antenna 200, so that the maximum radiation direction of the directional pattern generated by the antenna 200 is toward the target direction (for example, toward a communication satellite).

[0353] In one embodiment, when the foldable electronic device 100 is in a folded state, the first slit 231 opened in the first frame 210 is aligned with the fourth slit 234 opened in the second frame 220, and / or the second slit 232 opened in the first frame 210 is aligned with the third slit 233 opened in the second frame 220, so as to enhance the aesthetics of the foldable electronic device 100.

[0354] In one embodiment, the antenna 200 further includes a second tuning circuit 262, such as Fig.39 The second radiator 240 includes a second connection point 222 and a third connection point 223, and the second tuning circuit 262 is coupled and connected between the second connection point 222 and the third connection point 223. The fourth gap is located between the second connection point 222 and the third connection point 223.

[0355] It should be understood that the first radiator 230, the second radiator 240, the first tuning circuit 261 and the second tuning circuit 262 are used to generate the antenna pattern. In one embodiment, by coupling the second tuning circuit 262 connected between the second connection point 222 and the third connection point 223, the equivalent capacitance value of the fourth slot can be adjusted, thereby adjusting the radiation characteristics (e.g., the resonant point frequency) of the antenna 200.

[0356] For the sake of brevity, Fig.38 and Fig.39 Parts of the antenna 200 shown that are similar to the antenna 200 shown in the above embodiment are not repeated one by one, for example, the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; the relative positions of the first radiator 230 and the second radiator 240, etc.

[0357] Fig.40 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0358] like Fig.40 As shown, the second frame 220 is coupled to the floor 300 at the third position 213 and the fourth position 214. The second frame 220 defines a third gap 233 between the third position 213 and the fourth position 214.

[0359] It should be understood that Fig.38 The antenna 200 in the foldable electronic device 100 shown is different from the antenna 200 in the foldable electronic device 100 shown in the above embodiment only in the boundary conditions of the second radiator 240 (the two ends of the second radiator 240 are open ends or grounded ends).

[0360] In some of the above embodiments, the first end of the second radiator 240 is an open end, and the second end is a ground end (eg, Fig. 9 , Fig.25 In the foldable electronic device 100 shown in the figure), a structure similar to IFA is formed. In some of the above embodiments, the first end and the second end of the second radiator 240 are open ends (for example, Fig. 20 In the foldable electronic device 100 shown), a dipole-like structure is formed.

[0361] And in Fig.40 In the foldable electronic device 100 shown, the first end and the second end of the second radiator 240 are grounded, forming a structure similar to a slot antenna. The second radiator 240 can operate in a half-wavelength mode.

[0362] Fig.40The antenna 200 in the foldable electronic device 100 shown may also have the radiation characteristics of the antenna 200 in the above-mentioned embodiment. For example, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the radiation characteristics of the antenna 200. In one embodiment, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200. The first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200, thereby adjusting the maximum radiation direction of the directional pattern generated by the antenna 200. When the foldable electronic device 100 is in the unfolded state, the first tuning circuit 261 may be used to adjust the maximum radiation direction of the directional pattern generated by the antenna 200, so that the maximum radiation direction of the directional pattern generated by the antenna 200 is toward the target direction (for example, toward a communication satellite).

[0363] In one embodiment, the antenna 200 further includes a second tuning circuit 262, such as Fig.40 The second radiator 240 includes a second connection point 222 , and the second tuning circuit 262 is coupled to the second connection point 222 . In one embodiment, the third slot 233 is located between the second connection point 222 and the first connection point 221 .

[0364] It should be understood that the first radiator 230, the second radiator 240, the first tuning circuit 261 and the second tuning circuit 262 are used to generate the antenna's directional pattern. In one embodiment, the first tuning circuit 261 and the second tuning circuit 262 can be used to jointly adjust the radiation characteristics of the antenna 200 (for example, the resonance point frequency of the parasitic resonance generated by the second radiator 240).

[0365] In one embodiment, when the foldable electronic device 100 is in a folded state, the second slit 232 formed in the first frame 210 is aligned with the third slit 233 formed in the second frame 220 to enhance the aesthetics of the foldable electronic device 100 .

[0366] In one embodiment, the third position 213 and the fourth position 214 are located on the second side of the second frame 220 .

[0367] In one embodiment, when the foldable electronic device 100 is in a folded state, the first slit 231 formed in the first frame 210 is aligned with the third slit 233 formed in the second frame 220 to enhance the aesthetics of the foldable electronic device 100 .

[0368] In one embodiment, the third position 213 is located at the second side of the second frame 220 . The fourth position 214 is located at the other side of the second frame 220 .

[0369] In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is less than or equal to one quarter of the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is less than or equal to one eighth of the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is less than or equal to 10 mm. In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is less than or equal to 5 mm.

[0370] In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is greater than or equal to one quarter of the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is greater than or equal to one half of the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is greater than or equal to 20 mm. In one embodiment, the minimum distance between the second radiator 240 and the first rotation axis 203 is greater than or equal to 40 mm.

[0371] It should be understood that the embodiment of the present application does not limit the specific position of the second radiator 240, which is adjusted according to actual production or design. For the sake of brevity of discussion, it will not be described in detail.

[0372] In one embodiment, the second frame 220 defines a third gap 233 and a fourth gap 234 between the third position 213 and the fourth position 214. Fig.42 shown.

[0373] In one embodiment, the third position 213, the third slit 233, the fourth slit 234, and the fourth position 214 are arranged in sequence. In one embodiment, the third position 213 is located at the second side of the second frame 220. The fourth position 214 is located at the other side of the second frame 220.

[0374] In one embodiment, when the foldable electronic device 100 is in a folded state, the first slit 231 opened in the first frame 210 is aligned with the fourth slit 234 opened in the second frame 220, and / or the second slit 232 opened in the first frame 210 is aligned with the third slit 233 opened in the second frame 220, so as to enhance the aesthetics of the foldable electronic device 100.

[0375] In one embodiment, when the third slot 233 and the fourth slot 234 are formed in the second frame 220 , the antenna 200 may include a plurality of tuning circuits.

[0376] It should be understood that the first radiator 230, the second radiator 240, and the multiple tuning circuits are used to generate the antenna pattern. In one embodiment, the multiple tuning circuits are used to jointly adjust the radiation characteristics of the antenna 200 (for example, the resonance point frequency of the parasitic resonance generated by the second radiator 240).

[0377] It should be understood that in the embodiments of the present application, Fig.42 In the description, only the antenna 200 including the first tuning circuit 261 and the second tuning circuit 262 is used as an example (the third slot 233 and the fourth slot 234 are located between the first connection point 221 and the second connection point 222). In actual production or design, the position where the tuning circuit is coupled with the second radiator 240 and the number of tuning circuits can be adjusted. For example, the radiators on both sides of the slot are coupled with a tuning circuit, or the radiator between the third slot and the fourth slot includes a connection point coupled with the tuning circuit, etc. For the sake of brevity, they are not described one by one.

[0378] Fig.43 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0379] like Fig.43 As shown, the foldable electronic device 100 may further include a third housing 204 and a shaft 205. The shaft 205 is located between the first housing 201 and the third housing 204, and the shaft 205 is rotatably connected to the first housing 201 and the third housing 204, respectively, so that the first housing 201 and the third housing 204 can rotate relative to each other.

[0380] It should be understood that Fig.43 The antenna 200 is shown with Fig.33 The difference between the foldable electronic device 100 shown in FIG. 1 and FIG. 2 is that the positions of the third housing 204 and the hinge 205 are different. Fig.33 In the foldable electronic device 100 shown, the hinge 205 is located between the second housing 202 and the third housing 204. Fig.43 In the foldable electronic device 100 shown, the hinge 205 is located between the first shell 201 and the third shell 204 .

[0381] In one embodiment, the third housing 204 includes a third frame 310, at least a portion of which is spaced apart from the floor 300. The third frame 310 includes a seventh position 217 and an eighth position 218. The seventh position 217 may be located at a third side of the third frame 310. In one embodiment, the eighth position 218 may be located at a third side of the third frame 310. When the foldable electronic device 100 is in the unfolded state, the first side, the second side, and the third side may be the same side of the foldable electronic device 100, for example, a top side or a bottom side.

[0382] In one embodiment, the antenna 200 further includes a third radiator 320 and a fifth tuning circuit 265. The third radiator 320 is a conductive portion of the third frame 310 between the seventh position 217 and the eighth position 218.

[0383] The third radiator 320 includes a seventh connection point 227 , and the fifth tuning circuit 265 is coupled between the seventh connection point 227 and the floor 300 .

[0384] It should be understood that when the foldable electronic device 100 is in the unfolded state, the feeding circuit feeds an electrical signal, the first radiator 230 is used to generate a first resonance, the second radiator 240 is used to generate a first parasitic resonance, and the third radiator 320 can be used to generate a second parasitic resonance. The first tuning circuit 261 and the fifth tuning circuit 265 can be used to switch the maximum radiation direction of the directional pattern generated by the antenna 200. The first tuning circuit 261 can make the first parasitic resonance generated by the second radiator 240 close to the first resonance by switching the equivalent electrical parameters (for example, equivalent capacitance, equivalent inductance or equivalent resistance, etc.) between the first connection point 221 and the floor 300, and the fifth tuning circuit 265 can make the second parasitic resonance generated by the third radiator 320 close to the first resonance by switching the equivalent electrical parameters (for example, equivalent capacitance, equivalent inductance or equivalent resistance, etc.) between the seventh connection point 227 and the floor 300 (the first parasitic resonance and the second parasitic resonance close to the first resonance can be similar to the parasitic resonance generated by the second radiator close to the first resonance in the above embodiment, which will not be repeated one by one). The first parasitic resonance and the second parasitic resonance jointly reduce the influence of the current on the floor 300 on the radiation characteristics of the antenna 200. The first parasitic resonance and the second parasitic resonance jointly reduce the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200. When the foldable electronic device 100 is in the unfolded state, the first parasitic resonance and the second parasitic resonance jointly reduce the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200, thereby adjusting the maximum radiation direction of the directional pattern generated by the antenna 200. The first parasitic resonance and the second parasitic resonance jointly adjust the maximum radiation direction of the directional pattern generated by the antenna 200, so that the maximum radiation direction of the directional pattern generated by the antenna 200 is oriented toward the target direction (for example, toward a communication satellite). Since the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna 200 is reduced, the maximum radiation direction of the directional pattern generated by the antenna 200 when the foldable electronic device 100 is in the folded state and the unfolded state is approximately the same. Therefore, when performing satellite communication, the state of the foldable electronic device 100 (folded state or unfolded state) is changed, and the user does not need to change the posture of holding the foldable electronic device 100, which effectively improves the user experience.

[0385] At the same time, at the resonance point of the first resonance generated by the first radiator 230, the current generated by the first radiator 230, the current generated by the second radiator 240, and the current generated by the third radiator 320 are in the same direction. The current generated by the first radiator 230, the current generated by the second radiator 240, and the current generated by the third radiator 320 can form an effect similar to a current array, so that the antenna 200 has a stronger linear polarization characteristic, and the antenna 200 has a higher directivity coefficient. Since the gain is related to the directivity coefficient, due to the higher directivity coefficient, the gain of the antenna 200 can be improved, so that the foldable electronic device 100 has better satellite communication performance.

[0386] In one embodiment, the structure formed by the third radiator 320 may be similar to the structure formed by the second radiator 240 in any of the above embodiments. Fig.43 The structure formed by the third radiator 320 in the embodiment can be replaced by the structure formed by any one of the second radiators 240 in the above embodiments. In one embodiment, the third radiator 320 can be a structure with one end being an open end and the other end being a ground end. The third frame 310 has a sixth slit at the seventh position 217 and is coupled to the floor 300 at the eighth position 218. Alternatively, the third frame 310 is coupled to the floor 300 at the seventh position 217 and has a sixth slit at the eighth position 218. In one embodiment, the third radiator 320 can be a metamaterial structure. The antenna 200 includes a sixth tuning circuit 266. The sixth tuning circuit 266 is coupled between the eighth connection point and the ninth connection point of the third radiator 320, and the third radiator 320 has a slit between the eighth connection point and the ninth connection point. In one embodiment, the third radiator 320 can be a structure with two open ends. The third frame 310 has a sixth slit and a seventh slit at the seventh position 217 and the eighth position 218.

[0387] It should be understood that the third radiator 320 and the second radiator 240 can be any of the structures described in the above embodiments. For the sake of brevity, they will not be described one by one. In one embodiment, the third radiator 320 and the second radiator 240 can be the same structure, for example, a structure with open ends at both ends, or a structure with an open end and a ground end at one end. Alternatively, the third radiator 320 and the second radiator 240 can be different structures, which is not limited in the embodiment of the present application and can be selected according to actual production or design.

[0388] Fig.44 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0389] It should be understood that Fig.44 The antenna 200 is shown with Fig.43The foldable electronic device 100 shown in FIG. 1 is different only in that the third radiator 320 is not included.

[0390] exist Fig.43 In the foldable electronic device 100 shown, a third radiator 320 is provided. At the resonance point of the first resonance generated by the first radiator 230, the current generated by the first radiator 230, the current generated by the second radiator 240, and the current generated by the third radiator 320 are in the same direction. The current generated by the first radiator 230, the current generated by the second radiator 240, and the current generated by the third radiator 320 can form an effect similar to a current array, so that the antenna 200 has a stronger linear polarization characteristic, and the antenna 200 has a higher directivity coefficient.

[0391] And in Fig.44 In the foldable electronic device 100 shown, the third radiator 320 is not provided. Fig.43 The antenna 200 shown weakens the current array effect formed by the current, thereby reducing the directivity coefficient of the antenna 200, so that the antenna 200 has a wider radiation beam (for example, a beam width within 3 dB of the gain in the maximum radiation direction).

[0392] Among them, not setting the third radiator 320 can be understood as that all radiators (parasitic branches) on the third frame 310 will not have a significant impact on the directional pattern of the antenna 200 (for example, the maximum radiation direction of the directional pattern generated by the antenna 200 is offset by more than 10°).

[0393] Fig.45 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0394] It should be understood that in the above embodiments, the electronic device 100 is a foldable electronic device. In actual production or design, the technical solution described in the embodiments of the present application can also be used for other types of electronic devices 100 including larger-sized floors.

[0395] like Fig.45 As shown, the electronic device 100 sub-device 100 may include a first frame 210 and a floor 300. At least a portion of the first frame 210 is spaced apart from the floor 300.

[0396] The first frame 210 includes a first side 301. The first side 301 includes a first position 211, a second position 212, a third position 213, and a fourth position 214 arranged in sequence. The first frame 301 has an insulating gap at the first position 211 or is coupled with the floor 300. The first frame 301 has an insulating gap at the second position 212 or is coupled with the floor 300. The first frame 301 has an insulating gap at the third position 213 or is coupled with the floor 300. The first frame 301 has an insulating gap at the fourth position 214 or is coupled with the floor 300.

[0397] The electronic device 100 may further include an antenna 200. The operating frequency band of the antenna 200 may include a satellite communication frequency band.

[0398] The antenna 200 includes a first radiator 230 , a second radiator 240 , a feeding circuit 250 and a first tuning circuit 261 .

[0399] The first radiator 230 is a conductive portion of the first frame 210 between the first position 211 and the second position 212 . The second radiator 240 is a conductive portion of the second frame 220 between the third position 213 and the fourth position 214 .

[0400] The first radiator 230 includes a feeding point 251 , and the feeding circuit 250 is coupled to the feeding point 251 .

[0401] The second radiator 240 includes a first connection point 221 , and the first tuning circuit 261 is coupled between the first connection point 221 and the floor 300 .

[0402] The first frame 210 further includes a second side 302 and a third side 303 that intersect the first side 301 at an angle.

[0403] In one embodiment, the length L0 of the first side 301 and the length L1 of the first radiator 230 and the length L2 of the second radiator 240 satisfy: 1.2×(L1+L2)≤L0. In one embodiment, the length L0 of the first side 301 and the length L1 of the first radiator 230 and the length L2 of the second radiator 240 satisfy: 1.5×(L1+L2)≤L0. In one embodiment, the length L0 of the first side 300 and the length L1 of the first radiator 231 and the length L2 of the second radiator 240 satisfy: 2×(L1+L2)≤L0.

[0404] It should be understood that the length L0 of the first side 301 can be understood as the size of the electronic device 100 in the extension direction (for example, the x direction) of the first side 301. The proportional relationship between the length L0 of the first side 301 and the length L1 of the first radiator 230 and the length L2 of the second radiator 240 can also be understood as the proportional relationship between the size L0' of the floor 300 in the extension direction (for example, the x direction) of the first side 301 and the length L1 of the length L2 of the first radiator 230 and the second radiator 240. For example, 1.2×(L1+L2)≤L0', 1.5×(L1+L2)≤L0', 2×(L1+L2)≤L0'.

[0405] In one embodiment, the distance between the first position 211 and the second side 302 is less than or equal to the distance between the second position 212 and the third side 303. The first radiator 230 is disposed close to the second side 302.

[0406] It should be understood that the distance between the first position 211 and the second edge 302 can be understood as the distance between the first position 211 and the second edge 302 along the extension direction (e.g., x direction) of the first edge 301. For the sake of simplicity, the distances between the edges described in the embodiments of the present application can be understood accordingly.

[0407] It should be understood that in the above embodiments (for example, Figures 9 to 43 The electronic device 100 shown in FIG. 1 is a foldable electronic device, and the first radiator 230 and the second radiator 240 are respectively located on the first shell 201 and the second shell 202 that can be folded with each other in the electronic device 100. When the electronic device 100 is in the unfolded state, the first radiator 230 and the second radiator 240 are both located on the same side of the electronic device 100. The feeding circuit 250 feeds an electrical signal, the first radiator 230 generates a first resonance, and the second radiator 240 and the first tuning circuit 261 can be used to reduce the influence of the current on the floor 300 on the directional pattern generated by the antenna.

[0408] And in Fig.45 The electronic device 100 shown in the embodiment is different from the electronic device 100 shown in the embodiment Figures 9 to 44 The only difference between the electronic device 100 shown in FIG. 1 and FIG. 1 is that the electronic device 100 is not foldable.

[0409] exist Fig.45 In the electronic device 100 shown, the first radiator 230 and the second radiator 240 may be any one of the structures of the first radiator 230 and the structure of the second radiator 240 shown in the above embodiments.

[0410] When the first radiator 230 is arranged close to the second side 302, the feed circuit 250 feeds an electrical signal, the first radiator 230 generates a first resonance, and the second radiator 240 and the first tuning circuit 261 can be used to reduce the influence of the current on the floor 300 on the directional pattern generated by the antenna. Since the influence of the current on the floor 300 on the maximum radiation direction of the directional pattern generated by the antenna is reduced, the angle between the maximum radiation direction of the directional pattern generated by the antenna 200 and the direction perpendicular to the extension direction of the first side 301 (for example, the y direction) is small. The maximum radiation direction of the directional pattern generated by the antenna 200 can be oriented toward the target direction (for example, toward a communication satellite), which facilitates the establishment of a communication connection with the satellite.

[0411] In one embodiment, the first radiator 230 and the second radiator 240 are respectively located on two sides of the midpoint of the first side 301. The lengths of the first side 301 on both sides of the midpoint are the same.

[0412] It should be understood that the first radiator 230 and the second radiator 240 are respectively located on both sides of the midpoint of the first side 301, which can further reduce the influence of the current on the floor 300 on the side of the second radiator 240 on the maximum radiation direction of the directional pattern generated by the antenna, so that the maximum radiation direction of the directional pattern generated by the antenna 200 is not deflected toward the side of the second radiator 240.

[0413] In one embodiment, the distance L1′ between the first position 211 and the second side 302 and the length L1 of the first radiator 230 satisfy: L1′≤L1. In one embodiment, the distance L1′ between the first position 211 and the second side 302 and the length L1 of the first radiator 230 satisfy: L1′≤L1×0.5.

[0414] In one embodiment, the distance L2′ between the fourth position 214 and the third side 303 and the length L2 of the second radiator 240 satisfy: L2′≤L2. In one embodiment, the distance L2′ between the fourth position 214 and the third side 303 and the length L2 of the second radiator 240 satisfy: L2′≤L2×0.5.

[0415] It should be understood that Fig.45 The electronic device 100 is shown with Figures 9 to 44 Similar parts of the electronic device 100 shown in FIG. 1 are not described one by one. For example, similar parts include: related parameters of the insulating gap opened on the frame; satellite communication frequency band; efficiency pits generated by parasitic resonances generated by parasitic branches in the working frequency band; and so on.

[0416] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A foldable electronic device, characterized in that: include: A first shell, a second shell and a floor, wherein The first shell includes a first frame, the second shell includes a second frame, the first frame is at least partially spaced from the floor, and the second frame is at least partially spaced from the floor; The first frame includes a first position and a second position, wherein the first position and the second position are located at a first side of the first frame; The second frame includes a third position and a fourth position, the third position is located at a second side of the second frame, and based on the foldable electronic device being in an unfolded state, the first side and the second side are top sides or bottom sides of the foldable electronic device; a first rotating shaft, the first rotating shaft being located between the first shell and the second shell, and the first rotating shaft being rotatably connected to the first shell and the second shell respectively; and An antenna, comprising: a first radiator and a second radiator, the first radiator being a conductive portion of the first frame between the first position and the second position, and the second radiator being a conductive portion of the second frame between the third position and the fourth position; and A feeding circuit, the first radiator includes a feeding point, and the feeding circuit is coupled to the feeding point; a first tuning circuit, wherein the second radiator comprises a first connection point, and the first tuning circuit is coupled and connected between the first connection point and the floor; Wherein, based on the foldable electronic device being in an unfolded state, the first radiator is used to generate a first resonance, the resonant frequency band of the first resonance includes a satellite communication frequency band, and wherein the first radiator, the second radiator and the first tuning circuit are used to generate the radiation pattern of the antenna.

2. The foldable electronic device according to claim 1, characterized in that: The first frame defines a first gap and a second gap at the first position and the second position.

3. The foldable electronic device according to claim 1, characterized in that: The first frame defines a first gap at the first position, and the first frame is coupled to the floor at the second position.

4. The foldable electronic device according to claim 1, characterized in that: The first frame has a first gap at the first position, and the first frame is coupled to the floor at the second position; The antenna also includes a second tuning circuit, the first radiator includes a second connection point and a third connection point, the first radiator has a second gap between the second connection point and the third connection point, and the second tuning circuit is coupled and connected between the second connection point and the third connection point.

5. The foldable electronic device according to any one of claims 1 to 4, characterized in that: Based on the fact that the foldable electronic device is in an unfolded state, the maximum radiation direction of the antenna's directional pattern is related to the second radiator and the first tuning circuit.

6. The foldable electronic device according to any one of claims 1 to 5, characterized in that: Based on the antenna operating in the satellite communication frequency band, When the foldable electronic device is in an unfolded state, the maximum radiation direction of the directional pattern generated by the antenna is a first direction, When the foldable electronic device is in a folded state, the maximum radiation direction of the directional pattern generated by the antenna is the second direction, and the angle between the first direction and the second direction is less than or equal to 30°.

7. The foldable electronic device according to any one of claims 1 to 6, characterized in that: The first tuning circuit and the second radiator are used to generate parasitic resonance, and a frequency difference between a resonance point frequency of the first resonance and a resonance point frequency of the parasitic resonance is less than or equal to 200 MHz.

8. The foldable electronic device according to any one of claims 1 to 7, characterized in that: The antenna generates an efficiency pit at a first frequency point, and a frequency difference between a resonance point frequency of the first resonance and a frequency of the first frequency point is less than or equal to 200 MHz.

9. The foldable electronic device according to any one of claims 1 to 8, characterized in that: Based on the foldable electronic device being in an unfolded state, a difference between a resonance point frequency of the first resonance and a resonance point frequency of the parasitic resonance is less than or equal to 50 MHz.

10. The foldable electronic device according to any one of claims 1 to 9, characterized in that: The antenna generates an efficiency pit at a first frequency point, and a frequency difference between a resonance point frequency of the first resonance and a frequency of the first frequency point is less than or equal to 50 MHz.

11. The foldable electronic device according to any one of claims 1 to 10, characterized in that: The first radiator is used to generate a main resonance, the first tuning circuit and the second radiator are used to generate a parasitic resonance, the resonance point of the parasitic resonance is located within the resonance frequency band of the main resonance, and the main resonance and the parasitic resonance together form the first resonance.

12. The foldable electronic device according to any one of claims 1 to 11, characterized in that: The second frame defines a third slit and a fourth slit at the third position and the fourth position.

13. The foldable electronic device according to claim 12, characterized in that: The antenna also includes a third tuning circuit, the second radiator includes a fourth connection point, the third tuning circuit is coupled and connected between the fourth connection point and the floor, and the first radiator, the second radiator, the first tuning circuit and the third tuning circuit are used to generate a radiation pattern of the antenna.

14. The foldable electronic device according to any one of claims 1 to 11, characterized in that: Based on the foldable electronic device being in an unfolded state, the fourth position is located between the second position and the third position; The second frame defines a third gap at the third position, and the second frame is coupled to the floor at the fourth position.

15. The foldable electronic device according to any one of claims 1 to 11, characterized in that: Based on the foldable electronic device being in an unfolded state, the fourth position is located between the second position and the third position; The second frame is coupled to the floor at the third position, and the second frame defines a third gap at the fourth position.

16. The foldable electronic device according to claim 14 or 15, characterized in that: The antenna also includes a third tuning circuit; The second radiator includes a fourth connection point and a fifth connection point, the second radiator has a fourth gap between the fourth connection point and the fifth connection point, the third tuning circuit is coupled and connected between the fourth connection point and the fifth connection point, and the first radiator, the second radiator, the first tuning circuit and the third tuning circuit are used to generate the radiation pattern of the antenna.

17. The foldable electronic device according to claim 16, characterized in that: The distance between the fourth connection point and the fourth gap is less than or equal to 5 mm, and / or, The distance between the fifth connection point and the fourth gap is less than or equal to 5 mm.

18. The foldable electronic device according to claim 16 or 17, characterized in that: The fourth connection point is located between the third position and the fourth gap, and the fifth connection point is located between the fourth position and the fourth gap; The first connection point is located between the third position and the fourth connection point, and the distance between the fourth connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm; or, The first connection point is located between the fourth position and the fifth connection point, and a distance between the fifth connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm.

19. The foldable electronic device according to any one of claims 1 to 11, characterized in that: The second frame is coupled to the floor at the third position and the fourth position.

20. The foldable electronic device according to claim 19, characterized in that: The second radiator defines a third gap and / or a fourth gap between the third position and the fourth position.

21. The foldable electronic device according to any one of claims 1 to 20, characterized in that: A minimum distance between the second radiator and the first rotation axis is less than or equal to one quarter of the length of the second radiator.

22. The foldable electronic device according to any one of claims 1 to 20, characterized in that: A minimum distance between the second radiator and the first rotation axis is greater than or equal to one quarter of the length of the second radiator.

23. The foldable electronic device according to any one of claims 1 to 22, characterized in that: The foldable electronic device may further include a third housing and a second rotating shaft; Wherein, the second rotating shaft is located between the second shell and the third shell, and the second rotating shaft is rotatably connected to the second shell and the third shell respectively; or, The second rotating shaft is located between the first shell and the third shell, and the second rotating shaft is rotatably connected to the first shell and the third shell respectively.

24. The foldable electronic device according to claim 23, characterized in that: The third housing includes a third frame, the third frame is at least partially spaced apart from the floor, the third frame has a fifth position and a sixth position, the fifth position is located at a third side of the third frame, and based on the foldable electronic device being in an unfolded state, the first side, the second side and the third side are the same side of the foldable electronic device; The antenna also includes a third radiator and a fourth tuning circuit, the third radiator is the conductive part of the third frame between the fifth position and the sixth position, the third radiator includes a sixth connection point, and the fourth tuning circuit is coupled and connected between the sixth connection point and the floor.

25. The foldable electronic device according to claim 24, characterized in that: Based on the second rotating shaft being located between the second shell and the third shell, the first radiator is used to generate a first resonance; Based on the foldable electronic device being in an unfolded state, at the resonance point of the first resonance, the current on the first radiator and the current on the second radiator are in the same direction, and the current on the first radiator and the current on the third radiator are in opposite directions.

26. The foldable electronic device according to claim 25, characterized in that: Based on the second rotating shaft being located between the first shell and the third shell, the first radiator is used to generate a first resonance; Based on the foldable electronic device being in an unfolded state, at the resonance point of the first resonance, the current on the first radiator, the current on the second radiator and the current on the third radiator are in the same direction.

27. The foldable electronic device according to any one of claims 1 to 26, characterized in that: Based on the fact that the foldable electronic device is in a folded state, the first radiator and the second radiator at least partially overlap in a third direction, and the third direction is a thickness direction of the foldable electronic device.

28. The foldable electronic device according to any one of claims 1 to 27, characterized in that: A ratio of a dimension of the floor along an extension direction of the first side when the foldable electronic device is in an unfolded state to that when the foldable electronic device is in a folded state is greater than or equal to 1.8 and less than or equal to 2.

2.

29. The foldable electronic device according to any one of claims 1 to 28, characterized in that: The foldable electronic device performs at least one of the following services in the satellite communication frequency band: satellite receiving and / or sending short messages, satellite calling and / or answering calls, and satellite data.

30. An electronic device, characterized in that: include: floor; a frame, wherein at least a portion of the frame is spaced apart from the floor, The frame includes a first side and a second side that intersect at an angle, and the first side includes a first position, a second position, a third position, and a fourth position that are sequentially arranged; An antenna, comprising: a first radiator and a second radiator, the first radiator being a conductive portion of the frame between the first position and the second position, and the second radiator being a conductive portion of the frame between the third position and the fourth position; and A feeding circuit, the first radiator includes a feeding point, and the feeding circuit is coupled to the feeding point; a first tuning circuit, wherein the second radiator comprises a first connection point, and the first tuning circuit is coupled and connected between the first connection point and the floor; The length L0 of the first side, the length L1 of the first radiator, and the length L2 of the second radiator satisfy: 1.2×(L1+L2)≤L0; The distance L1′ between the first position and the second side and the length L1 of the first radiator satisfy: L1′≤L1; The first radiator is used to generate a first resonance, a resonance frequency band of the first resonance includes a satellite communication frequency band, and wherein the first radiator, the second radiator and the first tuning circuit are used to generate a directional pattern of the antenna.

31. The electronic device according to claim 30, characterized in that: The first radiator and the second radiator are respectively located on two sides of a midpoint of the first side, and the lengths of the first side on two sides of the midpoint are the same.

32. The electronic device according to claim 30 or 31, characterized in that: The frame defines a first gap and a second gap at the first position and the second position.

33. The electronic device according to claim 30 or 31, characterized in that: The frame has a first gap at the first position, and the frame is coupled to the floor at the second position, or, The frame is coupled to the floor at the first position, and the frame has a first gap at the second position.

34. The electronic device according to any one of claims 30 to 33, characterized in that: The frame defines a third slit and a fourth slit at the third position and the fourth position.

35. The electronic device according to any one of claims 30 to 33, characterized in that: The frame is coupled to the floor at the third position, and the frame has a third gap at the fourth position, or, The frame defines a third gap at the third position, and the frame is coupled to the floor at the fourth position.

36. The electronic device according to claim 35, characterized in that: The antenna also includes a second tuning circuit; The second radiator includes a second connection point and a third connection point, the second radiator has a fourth gap between the second connection point and the third connection point, the second tuning circuit is coupled and connected between the second connection point and the third connection point, and the first radiator, the second radiator, the first tuning circuit and the second tuning circuit are used to generate the radiation pattern of the antenna.

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