Foldable electronic device

Abstract

The application provides a foldable electronic device comprising an antenna. The working frequency band of the antenna comprises a satellite communication frequency band. The antenna comprises a radiator and a parasitic branch. A partially conductive frame of a housing serves as the radiator and the parasitic branch. When the foldable electronic device is in an unfolded state, the radiator and the parasitic branch can generate radiation beams towards both sides of the top of the foldable electronic device, so that the antenna has a wide beam characteristic. When the foldable electronic device is in the unfolded state, a user does not need to change a holding posture of the foldable electronic device when performing satellite communication, and the experience of the user when performing satellite communication can be improved.

Description

A foldable electronic device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202311868099.2 and application name “A Foldable Electronic Device”, and the Chinese patent application filed with the China Patent Office on November 18, 2024, with application number 202411648910.0 and application name “A Foldable Electronic Device”, the entire contents of which are incorporated by reference into 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, existing terminal electronic devices use the frame as an antenna radiator. For example, in satellite communication systems, the frame radiator is mainly used to form a linearly polarized antenna. When users use satellite communication, they need to point the electronic device at a specific direction to the sky 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, increasing the difficulty of establishing a communication connection with the satellite and greatly affecting the user's communication experience. Summary of the Invention

[0005] The present application provides a foldable electronic device including an antenna. The antenna uses a conductive portion of the frame of the foldable electronic device as a primary radiator and parasitic branches, which can enhance the user's satellite communication experience when the foldable electronic device is in the unfolded state.

[0006] In a first aspect, a foldable electronic device is provided, comprising: a first shell and a floor, wherein the first shell comprises a first frame, the first frame comprises a first side and a second side intersecting at an angle, the first frame comprises a first position, a second position, a third position and a fourth position arranged in sequence, the first position and the second position are located on the first side, the third position and the fourth position are located on the second side, the first frame has a first insulating gap, a second insulating gap and a third insulating gap at the first position, the second position and the fourth position respectively, and the first frame is coupled to the floor at the third position; a second shell and a first rotating shaft, the first rotating shaft is located between the first shell and the second shell, and the first rotating shaft is rotatably connected to the first shell and the second shell respectively; and a first antenna, the first antenna comprising: a first radiator and a first parasitic branch, the first radiator is between the first position and the second position The conductive part of the first frame, the first parasitic branch is the conductive part of the first frame between the third position and the fourth position, at least part of the first radiator is spaced apart from the floor, and at least part of the first parasitic branch is spaced apart from the floor; and a first feeding circuit and a first electronic component, the first radiator includes a first feeding point and a first connection point, the first feeding circuit is coupled to the first feeding point, the first electronic component is coupled and connected between the floor and the first connection point, the first feeding point and the first connection point are respectively located on both sides of the virtual axis of the first radiator, and the lengths of the first radiators on both sides of the virtual axis are the same; 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 first parasitic branch and the first electronic component are used to generate the radiation pattern of the antenna.

[0007] According to an embodiment of the present application, when the foldable electronic device is in an unfolded state, since the first parasitic branch is arranged on the second side, the direction of the radiation generated by the first parasitic branch is biased to the left of the first direction (the first direction is toward the side of the first parasitic branch). Among them, the first electronic component can enhance the radiation generated by the first parasitic branch. The first direction is the direction from the bottom of the foldable electronic device to the top of the foldable electronic device, for example, the z direction. And when the foldable electronic device is in an unfolded state, the radiation direction generated by the first radiator is biased to the right of the first direction (the first direction is toward the side of the rotating shaft). The first radiator and the first parasitic branch can respectively generate strong radiation on both sides of the top (first direction) of the foldable electronic device, which can make the antenna have a wide beam characteristic.

[0008] In combination with the first aspect, in certain implementations of the first aspect, based on the fact that the foldable electronic device is in an unfolded state and the first antenna operates in the satellite communication frequency band, the current on the floor on the first side of the virtual axis is greater than the current on the floor on the second side of the virtual axis, the first parasitic branch is located on the first side, and the first rotating shaft is located on the second side.

[0009] According to an embodiment of the present application, there is a strong current on the floor toward the side of the first parasitic branch, which can better excite the first parasitic branch to generate a first parasitic resonance, thereby improving the radiation characteristics of the radiation generated by the first parasitic resonance, and enhancing the radiation characteristics of the antenna on the left side of the first direction (the first direction toward the side of the first parasitic branch).

[0010] 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 beam width of the first antenna is related to the first parasitic branch.

[0011] According to an embodiment of the present application, the first radiator and the first parasitic branch can generate strong radiation beams on both sides of the top (first direction) of the foldable electronic device 100. When the two beams are close to each other, they can be combined into a radiation beam. Alternatively, when the two beams are offset on both sides of the first direction, the bandwidth of the radiation beam can be widened.

[0012] In combination with the first aspect, in certain implementations of the first aspect, based on the fact that the first feeding point is located on the first side of the virtual axis, the first connection point is located on the second side of the virtual axis, and the first electronic component has an open circuit characteristic, or based on the fact that the resonance point frequency of the first resonance is greater than or equal to 3 GHz, the equivalent inductance value of the first electronic component is greater than or equal to 20 nH, based on the fact that the resonance point frequency of the first resonance is greater than or equal to 2 GHz and less than 3 GHz, the equivalent inductance value of the first electronic component is greater than or equal to 10 nH, and based on the fact that the resonance point frequency of the first resonance is greater than or equal to 1 GHz and less than 2 GHz, the equivalent inductance value of the first electronic component is greater than or equal to 5 nH.

[0013] In combination with the first aspect, in certain implementations of the first aspect, based on the fact that the first connection point is located on the first side of the virtual axis, the first feeding point is located on the second side of the virtual axis, and the first electronic component has a short-circuit characteristic, or based on the fact that the resonance point frequency of the first resonance is greater than or equal to 3 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 0.5 pF, based on the fact that the resonance point frequency of the first resonance is greater than or equal to 2 GHz and less than 3 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 2 pF, and based on the fact that the resonance point frequency of the first resonance is greater than or equal to 1 GHz and less than 2 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 3 pF.

[0014] According to an embodiment of the present application, the first electronic component can be determined based on the positions of the first feeding point and the first connection point, so that there is a strong current on the floor toward the side of the first parasitic branch, which can better stimulate the first parasitic branch to generate a first parasitic resonance, thereby improving the radiation characteristics of the radiation generated by the first parasitic resonance, and enhancing the radiation characteristics of the antenna on the left side of the first direction (the first direction is toward the side of the first parasitic branch).

[0015] In combination with the first aspect, in certain implementations of the first aspect, the distance between the first feeding point and the first position or the second position is less than or equal to one third of the length of the first radiator, and / or the distance between the first connection point and the first position or the second position is less than or equal to one third of the length of the first radiator.

[0016] According to the embodiment of the present application, as the first feeding point moves toward one end of the first radiator, it is beneficial to miniaturize the first radiator.

[0017] 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 parasitic branch is used to generate a first parasitic resonance, the first parasitic resonance is located within the resonant frequency band of the main resonance, and the main resonance and the first parasitic resonance together form the first resonance.

[0018] According to the embodiment of the present application, as the first connection point moves toward one end of the first radiator, it is beneficial to adjust the current distribution on the floor, and a larger current adjustment range can be achieved.

[0019] 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 resonant point frequency of the first resonance and a frequency of the first frequency point is less than or equal to 50 MHz.

[0020] According to an embodiment of the present application, the coupling between the first radiator and the first parasitic branch is weak, and the first parasitic resonance cannot be well excited. Therefore, the pit corresponding to the first parasitic resonance does not appear clearly in the S-parameter diagram. However, since the first 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 first 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.

[0021] In combination with the first aspect, in certain implementations of the first aspect, based on the foldable electronic device performing satellite communication through the first antenna, the gain of the radiation pattern generated by the first antenna is greater than or equal to -6dBic within an angle range of 60° with a first direction, and the first direction is a direction from the bottom of the foldable electronic device to the top of the foldable electronic device.

[0022] According to an embodiment of the present application, the antenna has a wide beam width, enabling the foldable electronic device to have good communication characteristics within a first angle (e.g., 60°) relative to the first direction. For example, when a user is performing satellite communication, the antenna has a wide beam characteristic, and the directional pattern generated by the antenna has good characteristics within the first angle. The communication satellite can move within the first angle without affecting the quality of satellite communication. The user does not need to frequently change the posture of holding the foldable electronic device, effectively improving the user experience.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the first antenna further includes a second parasitic branch, which is a conductive portion of the first frame between the second position and the third position, and at least a portion of the second parasitic branch is spaced apart from the floor.

[0024] According to an embodiment of the present application, when the foldable electronic device is in an unfolded state, the second parasitic branch can be used to draw current flowing to the first parasitic branch, enhance the radiation characteristics of the first parasitic branch, and adjust the intensity of the radiation generated by the first parasitic branch to the left of the first direction, thereby adjusting the wide beam characteristics of the antenna.

[0025] In combination with the first aspect, in certain implementations of the first aspect, the first end of the second parasitic branch and the first end of the first radiator are opposite to each other through the second insulating gap and do not contact each other; the first antenna also includes a second electronic element, the first end of the second parasitic branch includes a second connection point, and the second electronic element is coupled and connected between the floor and the second connection point.

[0026] According to an embodiment of the present application, the second electronic component can be used to adjust the coupling amount between the second parasitic branch and the first radiator, adjust the current flowing to the first parasitic branch, and thus adjust the intensity of the radiation generated by the first parasitic branch to the left side of the first direction (the first direction is toward the side of the first parasitic branch).

[0027] In combination with the first aspect, in certain implementations of the first aspect, the first frame also includes a fifth position, the first position is located between the fifth position and the second position, and the first frame is coupled to the floor at the fifth position; the first antenna also includes a third parasitic branch, the third parasitic branch is a conductive part of the first frame between the first position and the fifth position, at least a part of the third parasitic branch is spaced apart from the floor, and the third parasitic branch is used to generate a second parasitic resonance, and the first resonance and the second parasitic resonance jointly support the satellite communication frequency band.

[0028] According to an embodiment of the present application, the conductive portion of the first frame between the first position and the fifth position serves as a third parasitic branch, which can be used to generate a third parasitic resonance to expand the operating frequency band of the antenna.

[0029] In combination with the first aspect, in certain implementations of the first aspect, the second shell includes a second frame, the third side of the second frame includes a sixth position and a seventh position, the second frame is coupled to the floor at the sixth position, and the second frame has a fourth insulating gap at the seventh position; the first antenna also includes a fourth parasitic branch, the fourth parasitic branch is a conductive part of the second frame between the sixth position and the seventh position, and at least part of the fourth parasitic branch is spaced apart from the floor; based on the foldable electronic device being in an unfolded state, the first side and the third side are the top side or bottom side of the foldable electronic device.

[0030] According to an embodiment of the present application, one end of the fourth parasitic branch is grounded and the other end is open, forming a structure similar to an IFA. In one embodiment, the fourth parasitic branch can operate in a quarter-wavelength mode.

[0031] In combination with the first aspect, in certain implementations of the first aspect, the antenna further includes a second tuning circuit, and the first antenna further includes a third electronic component; the fourth parasitic branch includes a third connection point and a fourth connection point, the fourth parasitic branch opens a fifth insulating gap between the third connection point and the fourth connection point, and the third electronic component is coupled and connected between the third connection point and the fourth connection point.

[0032] According to an embodiment of the present application, a fifth insulating gap is opened on the fourth parasitic branch node, and the fifth insulating gap can be regarded as an equivalent capacitance (for example, a distributed capacitance) set on the fourth parasitic branch node, and the equivalent capacitance can enable the fourth parasitic branch node to form a metamaterial structure. The fourth parasitic branch node with the metamaterial structure can increase the radiation aperture. After the fifth insulating gap is opened, 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 third connection point and the fourth connection point, the equivalent capacitance value of the fifth insulating gap can be adjusted, thereby adjusting the radiation characteristics of the antenna (for example, the resonant point frequency).

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

[0034] According to an embodiment of the present application, the distance between the third connection point and / or the fourth connection point and the fifth insulating gap can be understood as the minimum distance between the third connection point and / or the fourth connection point and the conductors on both sides of the fifth insulating gap (the length of the fourth parasitic stub between the third connection point and / or the fourth connection point and the fifth insulating gap). When the third electronic component is electrically connected to the third connection point and / or the fourth connection point via a connector (e.g., a metal spring), the distance between the third electronic component and the fifth insulating 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 fifth insulating gap.

[0035] In combination with the first aspect, in certain implementations of the first aspect, the second shell includes a second frame, the third side of the second frame includes a sixth position and a seventh position, and the second frame has a fourth insulating gap and a fifth insulating gap at the sixth position and the seventh position; the first antenna also includes a fourth parasitic branch, which is a conductive part of the second frame between the sixth position and the seventh position, and at least part of the fourth parasitic branch is spaced apart from the floor; based on the foldable electronic device being in an unfolded state, the first side and the third side are the top side or bottom side of the foldable electronic device.

[0036] According to an embodiment of the present application, both ends of the fourth parasitic branch are open ends, which can form a structure similar to a dipole antenna. In one embodiment, the fourth parasitic branch can operate in a half-wavelength mode.

[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 sixth position is located between the first position and the seventh position.

[0038] According to the embodiment of the present application, the grounding end of the fourth parasitic branch is close to the rotating shaft, which is convenient for implementation in actual production.

[0039] In combination with the first aspect, in certain implementations of the first aspect, the second shell includes a second frame, the second frame includes a third side and a fourth side intersecting at an angle, the second frame includes a sixth position, a seventh position, an eighth position and a ninth position arranged in sequence, the sixth position and the seventh position are located on the third side, the eighth position and the ninth position are located on the fourth side, the second frame has a fourth insulating gap, a fifth insulating gap and a sixth insulating gap at the sixth position, the seventh position and the ninth position respectively, and the second frame is coupled to the floor at the eighth position; the foldable electronic device may further include a second antenna, the second antenna includes: a second radiator and a fifth parasitic branch, the second radiator is the conductive part of the second frame between the sixth position and the seventh position. , the fifth parasitic branch is the conductive part of the second frame between the eighth position and the ninth position, at least part of the second radiator is spaced apart from the floor, and at least part of the fifth parasitic branch is spaced apart from the floor; and a second feeding circuit and a fourth electronic component, the second radiator includes a second feeding point and a fifth connection point, the second feeding circuit is coupled to the second feeding point, and the fourth electronic component is coupled and connected between the floor and the fifth connection point; wherein, based on the foldable electronic device being in an unfolded state, the first side and the third side are the top side or the bottom side of the foldable electronic device; based on the foldable electronic device being in an unfolded state, the second radiator and the fourth parasitic branch are used to generate a second resonance, and the resonant frequency band of the second resonance includes a satellite communication frequency band.

[0040] According to an embodiment of the present application, the first antenna and the second antenna can both operate in the satellite communication frequency band. According to the above embodiment, the first antenna and the second antenna both have wide beam characteristics. Therefore, the directional patterns generated by the first antenna and the second antenna can be superimposed, so that the foldable electronic device has better satellite communication performance.

[0041] In combination with the first aspect, in certain 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 second direction, and / or the first parasitic branch and the fifth parasitic branch at least partially overlap in the second direction, and the second direction is the thickness direction of the foldable electronic device.

[0042] 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 insulating gap is aligned with the fourth insulating gap, and / or the second insulating gap is aligned with the fifth gap, and / or the third insulating gap is aligned with the sixth insulating gap.

[0043] According to the embodiments of the present application, the overlap of radiators / parasitic branches and the alignment of gaps can improve the aesthetics of foldable electronic devices.

[0044] In combination with the first aspect, in certain implementations of the first aspect, the ratio of the dimensions of the floor along the extension direction of the first side when the foldable electronic device is in the unfolded state to that when the foldable electronic device is in the folded state is greater than or equal to 1.8 and less than or equal to 2.2.

[0045] 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 calling and / or answering calls, and satellite data. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] FIG1 is a schematic structural diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0047] FIG2 is a schematic structural diagram of the foldable electronic device 100 in an outwardly folded state.

[0048] FIG3 is a schematic structural diagram of the foldable electronic device 100 in a possible unfolded state.

[0049] FIG4 is a schematic structural diagram of the foldable electronic device 100 in a possible folded state.

[0050] FIG5 is a schematic structural diagram of the foldable electronic device 100 in a possible partially unfolded state.

[0051] FIG6 is a schematic diagram showing the structure of the common mode of an antenna provided in the present application and the corresponding distribution of current and electric field.

[0052] FIG7 is a schematic diagram showing the structure of the differential mode of another antenna provided in the present application and the corresponding current and electric field distribution.

[0053] FIG8 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.

[0054] FIG9 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0055] FIG10 is a schematic diagram of current distribution of the antenna 200 provided in an embodiment of the present application.

[0056] FIG11 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0057] FIG12 is an S-parameter simulation result of the antenna 200 in the foldable electronic device 100 shown in FIG9 .

[0058] FIG13 is a simulation result of the system efficiency of the antenna 200 in the foldable electronic device 100 shown in FIG9 .

[0059] FIG14 is a directional diagram of the antenna 200 when the first parasitic branch is not provided and the foldable electronic device 100 is in the unfolded state.

[0060] FIG15 is a directional diagram of the antenna 200 when the first parasitic branch is provided and the foldable electronic device 100 is in the unfolded state.

[0061] FIG16 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0062] FIG17 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG16 at 2 GHz.

[0063] FIG18 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0064] FIG. 19 is an S-parameter simulation result of the antenna 200 of the foldable electronic device 100 shown in FIG. 18 in the unfolded state.

[0065] FIG20 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG18 at 2 GHz.

[0066] FIG21 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG18 at 2.1 GHz.

[0067] FIG22 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG18 at 2.2 GHz.

[0068] FIG23 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0069] FIG24 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG23 at 2 GHz.

[0070] FIG25 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0071] FIG26 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG25 at 2 GHz.

[0072] FIG27 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0073] FIG28 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0074] FIG29 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0075] FIG30 is a schematic diagram of current distribution of the antenna 200 in the electronic device 100 shown in FIG29 .

[0076] FIG31 is a schematic diagram of current distribution of the antenna 200 in the electronic device 100 shown in FIG29 .

[0077] FIG32 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0078] FIG33 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0079] FIG34 is a schematic diagram of current distribution of the antenna 200 in the electronic device 100 shown in FIG32 .

[0080] FIG35 is a schematic diagram of current distribution of the antenna 200 in the electronic device 100 shown in FIG32 . DETAILED DESCRIPTION

[0081] The following explains the terms that may appear in the embodiments of the present application.

[0082] It should be understood that the term "and / or" as used herein is simply a term used to describe the existence of three possible relationships between related objects. For example, "A and / or B" can represent the existence of A alone, the existence of both A and B, and the existence of B alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0083] When used in this application, "within the range of...", unless it is specifically stated that the 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.

[0084] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected 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 referred to as capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gap between two conductive parts.

[0085] Component / device: includes at least one of lumped component / device and distributed component / device.

[0086] Lumped component / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For a signal, the component's characteristics remain constant at all times, regardless of frequency.

[0087] 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.

[0088] Capacitance: This 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.

[0089] Inductance: This 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 material.

[0090] Radiator: A device in an antenna used to receive / send electromagnetic wave radiation. In some cases, the narrow meaning of "antenna" is the radiator, which converts the guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, used to radiate and receive radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, where it is converted into a certain polarized electromagnetic wave energy and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a certain polarization from a specific direction in space into modulated high-frequency current energy and transmits it to the receiver input via the feeder line.

[0091] 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 can be simply referred to as a linear antenna. In one embodiment, the linear radiator can be implemented by a conductive frame, and can also be called a frame antenna. In one embodiment, the linear radiator can be implemented by a bracket conductor, and can also be called a bracket antenna. In one embodiment, the wire diameter (for example, including thickness and width) of the linear radiator, or the radiator of the linear antenna is much smaller than the wavelength (for example, the wavelength of the medium) (for example, less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (for example, the wavelength of the medium) (for example, 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 oscillator 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 typically includes two radiating branches, and each branch is fed by a feeding portion 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 a PIFA, Planar Inverted F Antenna). 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 circular, rectangular, annular, etc., and the present application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0092] The radiator may also include a slot or slot formed in a conductor, for example, a closed or semi-closed slot or slot formed in a grounded conductor surface. In one embodiment, a slotted or slotted radiator may be referred to as a slot antenna or slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slot 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 approximately 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 slot may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slot (e.g., a closed slot or slot with an additional opening) may be referred to as an open slot antenna. In some embodiments, the slot is elongated. In some embodiments, the slot is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the slot is approximately an integer multiple of the wavelength (e.g., one wavelength). In some embodiments, the slot can be fed with a transmission line spanning one or both sides, thereby exciting a radio frequency electromagnetic field in the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a conductive frame with both ends grounded, also known as a frame antenna. In this embodiment, the slot antenna or slot antenna can be considered to include a linear radiator spaced from the floor and grounded at both ends, thereby forming a closed or semi-enclosed slot or slot. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a bracket conductor with both ends grounded, also known as a bracket antenna.

[0093] 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 the 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.

[0094] In some embodiments, the electronic device may also include a test socket (or RF socket or RF test socket). This test socket can be used to insert a coaxial cable and test the characteristics of the RF front-end circuit or antenna radiator through the cable. The RF front-end circuit can be considered as the circuit portion coupled between the test socket and the transceiver.

[0095] 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.

[0096] It should be understood that any two of the first / second / ...Nth feeding circuits in the present application can 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); they can also share a radio frequency front-end circuit, for example, processing signals through a tuning circuit or amplifier in a radio frequency front-end.

[0097] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuit in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0098] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In another embodiment, the matching circuit is coupled between the test socket and the radiator. Typically, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit may include a tuning circuit and / or electronic components, and the tuning circuit may be an electronic component used to switch the coupling connection of the radiator. The matching circuit performs impedance matching and / or frequency tuning functions. Generally, it is considered to be part of the antenna.

[0099] The grounding structure / feeding structure may include a connector, such as a metal spring, through which the radiator is coupled to the floor / 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 wire.

[0100] End / Point: The "end / point" in the terms "first end / second end / feeding end / grounding end / feeding point / grounding point / connection point" of an antenna radiator should not be narrowly understood as an endpoint or end physically disconnected from other radiators. It can also be considered as a point or segment on a continuous radiator. In one embodiment, an "end / point" may include a connection / coupling area on an antenna radiator that couples to other conductive structures. For example, a feeding end / feeding point may be a coupling area on an antenna radiator that couples to a feeding structure or feeding circuit (e.g., an area facing a portion of the feeding circuit). In another example, a grounding end / grounding point may be a connection / coupling area on an antenna radiator that couples to a grounding structure or grounding circuit. Open End, Closed End: In some embodiments, open end and closed end refer to, for example, whether or not the antenna is grounded. A closed end is grounded, while an open end is not. In some embodiments, open end and closed end refer to, for example, other conductive bodies. A closed end is electrically connected to other conductive bodies, while an open end is not electrically connected to other conductive bodies. In one embodiment, an 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 to each other through the open end to transfer coupling energy (which may be understood as transferring current).

[0101] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end 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 / smaller 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 / smaller electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0102] In some embodiments, the understanding of "open end" can also be viewed from the perspective of current distribution. The open end or floating end can be understood as a point with low current on the radiator, or as a point with high 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 low current point / high electric field point.

[0103] It should be understood that coupling the radiator end at a gap (from the perspective of the radiator structure, it is similar to the radiator at the opening of the open end or the 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.

[0104] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feed line / feed branch and / or the ground line / ground branch, but is fed and / or grounded through indirect coupling.

[0105] It should be understood that the "suspended" in "suspended end" and "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.

[0106] 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 unidirectional distributed current on a conductor that is bent or ring-shaped (for example, the current path is also bent or ring-shaped), it should be understood that, for example, the main currents stimulated on the conductors on both sides of the ring conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) are opposite in direction, which still falls within the definition of the unidirectional distributed current in the embodiments of the present application. In one embodiment, the current same direction on a conductor can refer to the current on the conductor having no reversal point. In one embodiment, the current reverse on a conductor can refer to the current on the conductor having at least one reversal point. In one embodiment, the current same direction on two conductors can refer to the current on both conductors having no reversal point and flowing in the same direction. In one embodiment, the current reverse on two conductors can refer to the current on both conductors having no reversal point and flowing in opposite directions. The current same direction / reversal on multiple conductors can be understood accordingly.

[0107] Resonance / resonance frequency: The resonant frequency is also called the resonance frequency. The resonant 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 generate a corresponding fundamental mode resonance.

[0108] 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.

[0109] Communication frequency band / operating frequency band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna that supports the B40 frequency band operates between 2300MHz and 2400MHz, or in other words, the antenna's operating frequency band includes the B40 frequency band. The frequency range that meets the required specifications can be considered the antenna's operating frequency band.

[0110] 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 overlap one or more operating frequency bands of the antenna.

[0111] Electrical length: It can refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0112] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0113] Wavelength: Or operating wavelength, this 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, if the center frequency of the B1 uplink frequency band (resonant frequency 1920MHz to 1980MHz) is 1955MHz, the operating wavelength can be the wavelength calculated using 1955MHz. "Operating wavelength" is not limited to the center frequency; it can also refer to the wavelength corresponding to a non-center frequency of the resonant frequency or operating frequency band.

[0114] It should be understood that the wavelength of the radiation signal in 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: Wherein, 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" can 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.

[0115] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0116] Antenna radiation efficiency refers to the ratio of the power radiated by an antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Active power input to the antenna = antenna input power minus power loss; power loss primarily includes return loss and metal ohmic loss and / or dielectric loss. Radiation efficiency measures the antenna's radiation capability, and both metal loss and dielectric loss contribute to it.

[0117] Those skilled in the art will understand that efficiency is generally expressed as a percentage, which has a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0118] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port by the antenna circuit to the antenna port's transmitted power. The smaller the reflected signal, the larger the signal radiated from the antenna into space, and the greater the antenna's radiation efficiency. The larger the reflected signal, the smaller the signal radiated from the antenna into space, and the lower the antenna's radiation efficiency.

[0119] Antenna return loss can be expressed using the S11 parameter, a type of S parameter. S11 represents the reflection coefficient and characterizes the antenna's transmission efficiency. The S11 parameter is typically negative. A smaller S11 parameter indicates lower antenna return loss and less energy reflected back from the antenna itself, meaning more energy actually enters the antenna and higher system efficiency. A larger S11 parameter indicates greater antenna return loss and lower system efficiency.

[0120] It should be noted that in engineering, an S11 value of -6dB is generally used as a standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or the antenna can be considered to have good transmission efficiency.

[0121] Antenna pattern: Also known as radiation pattern. It is a graph showing how the relative field strength (normalized modulus) of the antenna's radiation field changes with direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular plane patterns passing through the antenna's direction of maximum radiation.

[0122] Antenna patterns typically have multiple radiation beams. The beam with the strongest radiation intensity is called the main lobe, while the remaining beams are called side lobes. Among the side lobes, those in the opposite direction of the main lobe are also called back lobes.

[0123] Directivity: Also known as the directivity of an antenna, it refers to the ratio of the maximum power density to the average power density in the antenna pattern at a certain distance from the antenna (far field). It is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of an antenna. A larger directivity indicates that the antenna radiates more energy in a certain direction and the energy radiation is more concentrated.

[0124] Antenna Gain: This is used to measure how well an antenna radiates input power. Generally, the narrower the main lobe of an antenna pattern and the smaller the side lobes, the higher the antenna gain.

[0125] Polarization direction of an antenna: At a given point in space, the electric field strength E (vector) is a function of time t. As time passes, the endpoints of the vector periodically trace a trajectory in space. If this 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 this trajectory is elliptical or circular and rotates clockwise or to the right as viewed along the propagation direction, it is called right-hand circular polarization (RHCP). If it rotates counterclockwise or to the left as viewed along the propagation direction, it is called left-hand circular polarization (LHCP).

[0126] Ground (GND): can generally 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. "Ground" can be used for grounding components in an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board of an electronic device, or it can be the grounding plate formed by the middle frame of the electronic device, or the grounding metal layer formed by the metal film under the 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 fiberglass, 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, touch screen, input buttons, transmitter, processor, memory, battery, charging circuit, and system-on-chip (SoC) structures can be mounted on or connected to a circuit board, or electrically connected to a trace layer and / or ground layer in the circuit board. For example, a radio frequency source can be located on a trace layer.

[0127] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of a conductive material. In one embodiment, the conductive material can be any of the following: copper, aluminum, stainless steel, brass, and alloys thereof, 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, a graphite-coated substrate, a copper-plated substrate, a brass-plated substrate, and an aluminum-plated substrate. Those skilled in the art will appreciate that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0128] Grounding refers to coupling to the ground / floor in any manner. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding at a specific location on the frame using a portion of the midframe's structural components (or referred to as a physical ground). In one embodiment, grounding can be achieved through device grounding, such as through a series or parallel connection of a capacitor, inductor, or resistor (or referred to as a device ground).

[0129] The technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0130] Figure 1 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application. Foldable electronic device 100 can be a mobile phone, tablet computer, e-reader, laptop computer, wearable device such as a watch, or other electronic device with folding functionality. The embodiment shown in Figure 1 is described using a foldable mobile phone as an example.

[0131] 1 , a foldable electronic device 100 may include a flexible display 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 housing 126 and a second housing 127 that support the flexible display 110. In other embodiments, at least one of the first cover 122 and the second cover 124 may include a display.

[0132] FIG1 is filled with a dot matrix pattern to schematically represent a 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.

[0133] 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 .

[0134] The first frame 121 can surround the outer periphery of the first cover 122, and at least a portion of the first frame 121 can also surround the outer periphery of the first display portion 111. The first display portion 111 can be arranged parallel to the first cover 122 and spaced apart from the first frame 121. The first display portion 111 and the first cover 122 can be located on either side of the first frame 121. The space between the first display portion 111 and the first cover 122 can be used to accommodate components of the foldable electronic device 100, such as antennas and circuit board components.

[0135] The second frame 123 can surround the outer periphery of the second cover 124, and at least a portion of the second frame 123 can also surround the outer periphery of the second display portion 112. The second display portion 112 can be arranged parallel to the second cover 124 and spaced apart from the second frame 123. The second display portion 112 and the second cover 124 can be located on either side of the second frame 123. The space between the second display portion 112 and the second cover 124 can be used to accommodate components of the foldable electronic device 100, such as antennas and circuit board components.

[0136] In one embodiment provided herein, the cover and the frame may be two parts of the housing of the foldable electronic device 100. The cover and the frame may be connected, and the form of the connection may not be an assembly method such as snap-on, gluing, welding, riveting, or clearance fit. The connection between the cover and the frame is usually difficult to separate. In another embodiment provided herein, the cover and the frame may be two different components. By assembling the cover and the frame together, the housing of the foldable electronic device 100 can be formed.

[0137] The frame can at least partially serve as an antenna radiator to transmit and receive radio frequency signals. A gap can exist between this portion of the frame serving as the radiator and the rest of the cover to ensure a good radiation environment for the antenna radiator. In one embodiment, the cover can be provided with a slit in this portion of the frame serving as the radiator to facilitate antenna radiation.

[0138] The antenna of the electronic device 100 can also be set within the frame. When the frame of the electronic device 100 is a non-conductive material, the antenna radiator can be located within the electronic device 100 and arranged along the frame. For example, the antenna radiator is set close to the frame to minimize the volume occupied by the antenna radiator and be closer to the outside of the electronic device 100 to achieve better signal transmission effect. It should be noted that the antenna radiator is set close to the frame means that the antenna radiator can be set close to the frame, or it can be set close to the frame, for example, there can be a certain small gap between the antenna radiator and the frame.

[0139] The antenna of electronic device 100 may also be disposed within the housing, such as a bracket antenna or millimeter-wave antenna (not shown in FIG1 ). The clearance for the antenna disposed within the housing can be provided by a slot / opening in any of the cover, frame, and / or display, or by a non-conductive gap / aperture formed between any of these. The antenna clearance ensures the antenna's radiation performance. It should be understood that the antenna clearance can be a non-conductive area formed by any conductive component within electronic device 100, through which the antenna radiates signals to the outside world. In one embodiment, the antenna can be based on a flexible printed circuit (FPC), a laser-direct-structuring (LDS) antenna, or a microstrip disk antenna (MDA). In one embodiment, the antenna can also be a transparent structure embedded within the display screen of electronic device 100, such that the antenna is a transparent antenna unit embedded within the display screen of electronic device 100.

[0140] The foldable electronic device 100 may also include a printed circuit board (PCB) (not shown). The PCB is located within the cavity formed by the cover. The PCB can be made of a flame-resistant material (FR-4), a Rogers dielectric, or a mixture of Rogers and FR-4. FR-4 is a designation for a flame-resistant material grade, and Rogers dielectric refers to a high-frequency board. The PCB 17 carries electronic components, such as radio frequency chips. In one embodiment, a metal layer may be provided on the PCB. This metal layer can be used to ground the electronic components carried on the PCB, as well as other components such as a bracket antenna or a frame antenna. This metal layer may be referred to as a floor, ground plane, or grounding layer. In one embodiment, the metal layer can be formed by etching metal onto the surface of any dielectric layer in the PCB. In one embodiment, the metal layer used for grounding can be provided on the side of the PCB proximal to the flexible display 110. In one embodiment, the edge of the PCB can be considered the edge of its grounding layer. The electronic device 100 may also have other floor / ground planes / grounding layers, as previously described and not further described here.

[0141] The hinge 125 can be connected between the first housing 126 and the second housing 127. The hinge 125 can move the first housing 126 and the second housing 127 closer to or farther from each other. Accordingly, the first display portion 111 of the flexible display 110 and the second display portion 112 of the flexible display 110 can move closer to or farther from each other, allowing the flexible display 110 to be folded or unfolded.

[0142] In one example, the rotating shaft 125 may include 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 and second connecting components are rotatable relative to the main shaft. The mutual movement of the first and second connecting components can drive the mutual movement of the first and second housings 126 and 127, thereby realizing the opening and closing function of the foldable electronic device 100.

[0143] The foldable electronic device 100 shown in FIG1 is currently in an 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 110 can be in the unfolded state as shown in FIG1 .

[0144] FIG2 illustrates a possible folded state of the foldable electronic device 100. FIG2 shows the foldable electronic device 100 in an outwardly folded state (the outwardly folded state may be referred to as the outwardly folded state). The outwardly folded state illustrated in FIG2 may be, for example, a left-right outwardly folded state or a top-bottom outwardly folded state. The following describes a possible folded state of the foldable electronic device 100 in conjunction with FIG1 and FIG2 .

[0145] In the embodiments 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 degree of bending of the foldable electronic device 100 has reached its maximum. In this case, the first cover 122 and the second cover 124 may be approximately parallel, spaced apart from each other, and disposed face to face, with the spacing between the first cover 122 and the second cover 124 being minimized. At least portions of the first housing 126 and the second housing 127 are contained within the space enclosed by the flexible display 110. The first display portion 111, the first housing 126, the second housing 127, and the second display portion 112 are sequentially stacked. Similarly, the first display portion 111 and the second display portion 112 may be approximately parallel, spaced apart from each other, with the spacing between the first cover 122 and the second cover 124 being smaller than the spacing between the first display portion 111 and the second display portion 112. In this case, the first display portion 111 and the second display portion 112 may be considered to be located on different planes.

[0146] 1 and 2 , when the foldable electronic device 100 is in the outward folded state, the first cover 122 and the second cover 124 can be brought into close proximity, and the first display portion 111 and the second display portion 112 can be brought into close proximity. 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 hinge 125. In other words, the first cover 122, the second cover 124, and the hinge 125 can be accommodated in the space between the first display portion 111 and the second display portion 112.

[0147] It should be understood that the foldable electronic device 100 can be folded inward (the inward folded state can be simply referred to as the inward folded state). When the foldable electronic device 100 is in the inward 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 cover 122, the second cover 124 and the hinge 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 space between the first cover 122 and the second cover 124.

[0148] 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 space occupied by 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 user's viewing range.

[0149] The foldable electronic device 100 may further include a third housing 128 and a hinge 129, as shown in FIG3 . The hinge 129 may be connected between the third housing 128 and the second housing 127 . The third housing 128 and the second housing 127 may be moved closer to or further away from each other. As the number of foldable portions of the foldable electronic device 100 increases, the space occupied by the foldable electronic device 100 may be further reduced in the folded state while maintaining the same screen size in the unfolded state.

[0150] In the foldable electronic device 100 shown in Figure 3, since it has three foldable parts (first shell 126, second shell 127 and third shell 128), the foldable electronic device 100 has three forms: 1. unfolded state; 2. folded state; 3. partially unfolded state.

[0151] 1. As shown in FIG3 , a possible unfolded state of the foldable electronic device 100 is shown. 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 110 may be in the unfolded state.

[0152] 2. Figure 4 shows a possible folded state (tri-folded 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, thereby achieving the maximum degree of curvature of the foldable electronic device 100. In this state, the first housing 126, the second housing 127, and the third housing 128 can be considered to be located on different planes.

[0153] It should be understood that for the sake of simplicity, in the structure shown in FIG4 , the folded state of the foldable electronic device 100 is an S-fold (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 a G-fold (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 folding state of the foldable electronic device 100.

[0154] 3. As shown in FIG5 , a possible partially unfolded state (two-folded state) of the foldable electronic device 100 is shown. In the partially unfolded state, the angle between the first shell 126 and the second shell 127 can be approximately 180°, and the second shell 127 and the third shell 128 rotate along the rotation axis 129, so that the third shell 128 approaches the second shell 127. In this case, the first shell 126 and the second shell 127 are considered to be located on the same plane, and the second shell 127 and the third shell 128 can be considered to be located on different planes. In another possible partially unfolded state, the angle between the third shell 128 and the second shell 127 can be approximately 180°, and the first shell 126 and the second shell 127 rotate along the rotation axis 125, so that the first shell 126 approaches the second shell 127.

[0155] FIG. 1 only schematically illustrates some components of the electronic device 100 , and the actual shapes, sizes, and structures of these components are not limited by FIG. 1 .

[0156] 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 surface, the surface where the back cover is located can be considered as the back surface, and the surface where the frame is located can be considered as the side surface.

[0157] It should be understood that in the embodiments of the present application, when a user holds an 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 a user holds an 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.

[0158] First, Figures 6 and 7 will introduce the two antenna modes involved in this application. Figure 6 is a schematic diagram of the common-mode structure of an antenna provided in this application and the corresponding current and electric field distribution. Figure 7 is a schematic diagram of the differential-mode structure of another antenna provided in this application and the corresponding current and electric field distribution. The antenna radiators in Figures 6 and 7 are open at both ends, and their common-mode mode and differential-mode mode can be referred to as line common-mode mode and line differential-mode mode, respectively.

[0159] It should be understood that the “common-differential mode” or “CM-DM mode” in this application refers to a line common mode mode and a line differential mode mode generated on the same radiator.

[0160] 1. Wire common mode (CM) mode

[0161] (a) in Figure 6 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 being connected to the radiator and the other end being 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. 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).

[0162] 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 .

[0163] (b) in FIG6 shows the current and electric field distribution of the antenna 40. As shown in (b) in FIG6, 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. As shown in (b) in FIG6, the current at the feed line 42 is distributed in the same direction. Based on the same direction distribution of the current at the feed line 42, the feeding shown in (a) in FIG6 can be called line CM feeding. Based on the opposite distribution of the current on both sides of the connection between the radiator and the feed line 42, the antenna mode shown in (b) in FIG6 can be called a line CM mode (also referred to as a CM mode for short, for example, for a linear antenna, the CM mode refers to a line CM mode). The current and electric field shown in (b) in FIG6 can be respectively referred to as the current and electric field of the line CM mode.

[0164] The current is stronger at the center 41 of the antenna 40 (the highest current point is near the center 41 of the antenna 40) and weaker at both ends of the antenna 40, as shown in FIG6(b). The electric field is weaker at the center 41 of the antenna 40 and stronger at both ends of the antenna 40.

[0165] 2. Line differential mode (DM) mode

[0166] As shown in Figure 7(a), the left and right ends of the two radiators of antenna 50 are open, and a feed circuit is connected at a center position 51. In one embodiment, antenna 50 uses an anti-symmetrical feed. One end of the feed circuit is connected to one of the radiators via a feed line 52, and the other end of the feed circuit is connected to the other radiator via a feed line 52. Center position 51 can be the geometric center of antenna 50 or the gap formed between the radiators.

[0167] It should be understood that the "center-antisymmetric feeding" mentioned in this application can be understood as the positive and negative poles of the feed unit being connected to two connection points near the aforementioned midpoint of the radiator. In one embodiment, the signals output by the positive and negative poles of the feed unit have the same amplitude but opposite phases, for example, a phase difference of 180°±10°.

[0168] Figure 7(b) shows the current and electric field distribution of antenna 50. As shown in Figure 7(b), the current is distributed in the same direction on both sides of the center position 51 of antenna 50, for example, with an antisymmetric distribution; the electric field is distributed in opposite directions on both sides of the center position 51. As shown in Figure 7(b), the current at the feed line 52 is distributed in opposite directions. Based on the opposite current distribution at the feed line 52, the feeding shown in Figure 7(a) can be referred to as linear DM feeding. Based on the current being distributed in the same direction on both sides of the connection between the radiator and the feed line 52, the antenna mode shown in Figure 7(b) can be referred to as a linear DM mode (or simply a DM mode, for example, for a linear antenna, a DM mode refers to a linear DM mode). The current and electric field shown in Figure 7(b) can be referred to as the current and electric field of the linear DM mode, respectively. 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 feed line 52, the antenna mode shown in Figure 7(b) can also be referred to as a half-antenna mode, a half-wavelength mode, or simply a half-mode.

[0169] In one embodiment, in the wire DM mode, or half mode, the current is stronger at the center 51 of the antenna 50 (the highest current point is near the center 51 of the antenna 50) and weaker at both ends of the antenna 50, as shown in FIG7(b). The electric field is weaker at the center 51 of the antenna 50 and stronger at both ends of the wire antenna 50.

[0170] It should be understood that the antenna radiator can be understood as a metal structural member that generates radiation, and the number of the radiator can be one, as shown in FIG6 , or two, as shown in FIG7 , which can be adjusted according to actual design or production needs. For example, for the line CM mode, two radiators can be used as shown in FIG7 , with the two ends of the two radiators 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 an effect similar to the antenna structure shown in FIG6 can also be obtained. Correspondingly, for the line DM mode, one radiator can be used as shown in FIG6 , with two feeding points set in the middle of the radiator and an anti-symmetrical 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, an effect similar to the antenna structure shown in FIG7 can also be obtained.

[0171] 3. Line CM-DM mode

[0172] FIG6 and FIG7 above respectively show that when both ends of the radiator are open, a line CM mode and a line DM mode are generated by adopting different feeding methods.

[0173] When the antenna uses asymmetric feeding (the feeding point is offset from the center of the radiator, including side feeding or offset feeding), or the radiator's grounding point (where it couples with the floor) is asymmetric (the grounding point is offset from the center of the radiator), the antenna can simultaneously produce a first resonance and a second resonance, corresponding to the linear CM mode and the linear DM mode, respectively. For example, the first resonance corresponds to the linear CM mode, with the current and electric field distributions shown in Figure 6(b). The second resonance corresponds to the linear DM mode, with the current and electric field distributions shown in Figure 7(b).

[0174] FIG8 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.

[0175] 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 shaft 203.

[0176] As shown in FIG8 , in the unfolded state of the foldable electronic device 100, 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 z-direction) (e.g., deflect toward the x-direction).

[0177] When a user is performing satellite communications, the antenna's maximum radiation direction must be pointed toward the satellite to achieve alignment (establish a communication connection with the satellite). When the foldable electronic device 100 is unfolded, the maximum radiation direction of the directional pattern generated by the antenna 200 deviates from the top direction (e.g., the z-direction) of the foldable electronic device 100. Furthermore, the antenna 200 typically has a narrow beamform; for example, it can only achieve good communication performance within a 30° angle from the top direction (e.g., the z-direction).

[0178] Among them, the beam width can be understood as that the gain of the directional pattern generated by the antenna 200 is greater than or equal to the threshold within the range of a first angle with the top direction (for example, the z direction) pointing to the foldable electronic device 100, and the first angle is the beam width.

[0179] When the beam width of the antenna 200 is narrow, since 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 z direction), the user needs to frequently change the posture of holding the foldable electronic device 100 so that the maximum radiation direction of the directional pattern generated by the antenna 200 points to the top direction of the foldable electronic device 100 (for example, the z direction) to maintain the alignment with the satellite, otherwise the communication quality will deteriorate, which causes great inconvenience in use.

[0180] If the beam width of the antenna 200 is wider, the antenna 200 has a wide beam characteristic, and the antenna 200 has good communication performance within a larger angle with the top direction (for example, the z direction). Therefore, when conducting satellite communication, the user does not need to change the posture of holding the foldable electronic device 100, which helps to improve the user experience.

[0181] An embodiment of the present application provides a foldable electronic device, which includes an antenna. The antenna uses a conductive part of the frame of the foldable electronic device as a main radiator and a parasitic branch, which can improve the user's experience of satellite communication when the foldable electronic device is in an unfolded state.

[0182] FIG9 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0183] As shown in FIG. 9 , the foldable electronic device 100 may include a first housing 201 , a second housing 202 , a hinge 203 , and a floor 300 .

[0184] 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 the 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. Here, 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 the 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.

[0185] 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.

[0186] 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.

[0187] The rotating shaft 203 is located between the first shell 201 and the second shell 202 and is rotatably connected to the first shell 201 and the second shell 202, respectively, allowing the first shell 201 and the second shell 202 to rotate relative to each other. In one embodiment, the floor 300 may include a first portion and a second portion. The first portion may be located within the first shell 201, and the second portion may be located within the second shell 202. The first portion and the second portion may be connected by the rotating shaft 203.

[0188] It should be understood that in the foldable electronic device 100 shown in FIG9 , the hinge 203 is directly connected to the first housing 201 and the second housing 202, respectively, enabling relative rotation of the first and second housings 201 and 202. Furthermore, "the hinge 203 is rotatably connected to the first and second housings 201 and 202," including the case where the hinge 203 is rotatably connected to the first or second housing via one or more second hinges and one or more intermediate housings. For example, in one embodiment, the foldable electronic device 100 may further include a first hinge and a second hinge, and one or more intermediate housings located between the first and second hinges. The first hinge is located between the first housing 201 and the intermediate housing, and is rotatably connected to the first and intermediate housings, respectively, enabling relative rotation of the first and intermediate housings. The second hinge is located between the intermediate and second housings 202, and the hinge 203 is rotatably connected to the intermediate and intermediate housings, respectively, enabling relative rotation of the intermediate and intermediate housings 202.

[0189] The first frame 210 includes a first position 211, a second position 212, a third position 213, and a fourth position 214. The first frame 210 defines a first insulating gap in the first position 211, a second insulating gap in the second position 212, and a third insulating gap in the fourth position 214. The first frame 210 is coupled to the floor 300 at the third position 213.

[0190] The first position 211 and the second position 212 are located on the first side 301 of the first frame 210, and the third position 213 and the fourth position 214 are located on the second side 302. The first side 301 and the second side 302 intersect at an angle. In one embodiment, the length of the first side 301 is less than the length of the second side 302. In one embodiment, the first side 301 is the top or bottom side of the foldable electronic device 100. For simplicity, in this embodiment of the application, only the first side 301 is the top side of the foldable electronic device 100.

[0191] It should be understood that there may be an insulating gap on the frame, and the conductor part of the frame between the two insulating gaps or the insulating gap and the grounding point serves as a radiator, thereby forming a frame antenna. Among them, when the frame is formed of a conductive material such as metal, the insulating gap can be understood as a gap opened in the frame filled with non-metallic material (insulating material). Moreover, the gap is visible on the exterior surface. When the outer surface of the frame is a non-conductive material, the insulating gap can be understood as a gap between the conductor parts in the frame, and the gap can be filled with non-metallic material (insulating material), or it can be filled with air without filling non-metallic material. Moreover, the gap is not visible on the exterior surface.

[0192] In one embodiment, the width of the first insulating gap / the second insulating gap / the third insulating gap is greater than or equal to 0.2 mm and less than or equal to 2 mm. It should be understood that the width of the gaps opened on the frame in the embodiment of the present application can be within the above range.

[0193] In one embodiment, the ratio of the dimension of the floor 300 along the extension direction of the first side (the width of the foldable electronic device 100) when the foldable electronic device 100 is in the unfolded state to the dimension of the foldable electronic device 100 when the foldable electronic device 100 is in the folded state is greater than or equal to 1.8 and less than or equal to 2.2.

[0194] The foldable electronic device 100 may further include an antenna 200 . The antenna 200 includes a first radiator 231 , a first parasitic stub 241 , a first feeding circuit 230 , and a first electronic component 261 .

[0195] The first radiator 231 is a conductive portion of the first frame 210 between the first position 211 and the second position 212. The first parasitic stub 241 is a conductive portion of the first frame 210 between the third position 213 and the fourth position 214. In one embodiment, the first and second ends of the first radiator 231 are open. The first end of the first parasitic stub 241 is grounded, and the second end is open.

[0196] The first radiator 231 includes a first feeding point 251 and a first connection point 221. The first feeding circuit 230 is coupled to the first feeding point 251. The first electronic component 261 is coupled between the first connection point 221 and the floor 300. The first feeding point 251 and the first connection point 221 are located on either side of a virtual axis of the first radiator 231. The length of the first radiator 231 on both sides of the virtual axis is the same.

[0197] It should be understood that the two sides of the virtual axis described in the embodiments of the present application can be understood as the two sides of the plane formed by the virtual axis and the thickness direction (e.g., the direction perpendicular to the display screen in the unfolded state) (e.g., the y-direction) of the foldable electronic device 100. The first parasitic branch 241 is located on the first side of the virtual axis, and the rotating shaft 203 is located on the second side of the virtual axis.

[0198] At the same time, due to production design requirements, the edge of the first frame 210 facing the floor 300 (towards the inside of the foldable electronic device 100) is not flat. Therefore, in the application embodiment, the virtual axis of the first radiator 231 can be understood as a straight line perpendicular to the center of the first radiator 231.

[0199] The operating frequency band of antenna 200 may include a satellite communication frequency band. When the foldable electronic device 100 is in the unfolded state, the first radiator 231 is configured to generate a first resonance, and the resonant frequency band of the first resonance includes a satellite communication frequency band. Satellite communication includes at least one of satellite-based short message (SMS) reception and / or transmission, satellite-based calling and / or receiving, and satellite-based data (e.g., internet access).

[0200] In one embodiment, the satellite communication frequency band may include part of the frequency band 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 part of the frequency band 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 part of the frequency band 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 thereto.

[0201] In one embodiment, when the antenna 200 operates in the Tiantong satellite system (the operating frequency band of the antenna 200 includes at least part of the frequency band of the Tiantong satellite system), the foldable electronic device 100 can perform voice communication through the antenna 200. In one embodiment, when the antenna 200 operates in the Beidou satellite system (the operating frequency band of the antenna 200 includes at least part of the frequency band of the Beidou satellite system), the foldable electronic device 100 can send or receive short messages and pictures through the antenna 200.

[0202] The first radiator 231 , the first parasitic stub 241 , and the first electronic component 261 are used to generate a directivity pattern of the antenna. In one embodiment, when the foldable electronic device 100 is in the unfolded state, the beam width of the antenna 200 is related to the first parasitic stub 241 .

[0203] According to an embodiment of the present application, when the foldable electronic device 100 is in the unfolded state, since the first parasitic branch 241 is arranged on the second side 302, the direction of the radiation generated by the first parasitic branch 241 is biased to the left of the first direction (the first direction is toward the side of the first parasitic branch 241). Among them, the first electronic component 261 can enhance the radiation generated by the first parasitic branch 241. The first direction is the direction from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100, for example, the z direction. When the foldable electronic device 100 is in the unfolded state, the radiation direction generated by the first radiator 231 is biased to the right of the first direction (the first direction is toward the side of the rotating shaft 203). The first radiator 231 and the first parasitic branch 241 can respectively generate strong radiation on both sides of the top (first direction) of the foldable electronic device 100, which can make the antenna 200 have a wide beam characteristic.

[0204] It should be understood that when the foldable electronic device 100 is in the unfolded state, the first feeding circuit 230 feeds an electrical signal, the first radiator 231 is used to generate a main resonance, and the first parasitic branch 241 is used to generate a first parasitic resonance. The main resonance and the first parasitic resonance together form the above-mentioned first resonance (because the frequency difference between the resonance point of the first parasitic resonance and the resonance point of the main resonance is small, in the S-parameter diagram, the main resonance and the first parasitic resonance are merged into one resonance). In one embodiment, the resonance point of the first parasitic resonance is located within the resonance frequency band of the main resonance. In one embodiment, the frequency difference between the resonance point frequency of the first parasitic resonance and the resonance point frequency of the main resonance is less than or equal to 100 MHz. In one embodiment, the frequency difference between the resonance point frequency of the first parasitic resonance and the resonance point frequency of the main resonance is less than or equal to 50 MHz. Among them, the resonance point frequency of the first parasitic resonance can be greater than, equal to, or less than the resonance point frequency of the main resonance.

[0205] At the same time, in the implementation of the present application, the coupling between the first radiator 231 and the first parasitic branch 241 is weak, and the first parasitic resonance cannot be well excited. Therefore, the pit corresponding to the first parasitic resonance does not appear clearly in the S parameter diagram. However, since the first 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 first 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.

[0206] When the foldable electronic device 100 is in the unfolded state, because the first parasitic branch 241 is located on the second side 302, the maximum radiation direction of the directional pattern generated by the first parasitic resonance is biased toward the first side (the first side is the side where the virtual axis of the first radiator 231 is close to the first parasitic branch 241). When the foldable electronic device 100 is in the unfolded state, because the main resonance is affected by the current on the floor 300, the maximum radiation direction of the directional pattern generated by the main resonance is biased toward the second side (the second side is the side where the virtual axis of the first radiator 231 is away from the first parasitic branch 241). Because the first parasitic resonance and the main resonance can generate radiation on both sides of the top of the foldable electronic device 100, the antenna 200 can have wide beam characteristics. In one embodiment, when the first parasitic resonance and the main resonance can generate strong radiation beams on both sides of the top (first direction) of the foldable electronic device 100, when the two beams are close, they can be combined into a single radiation beam. Alternatively, when the two beams are offset on both sides of the first direction, the bandwidth of the radiation beam can be widened.

[0207] The wide beam characteristic can be understood as the antenna 200 having a wide beam width, which enables the foldable electronic device 100 to have good communication characteristics within a first angle (e.g., 50°) relative to the first direction. For example, when a user is performing satellite communication, the antenna 200 has a wide beam characteristic, and the directional pattern generated by the antenna 200 has good characteristics within the first angle. The communication satellite can move within the first angle without affecting the quality of satellite communication. The user does not need to frequently change the posture of holding the foldable electronic device 100, which effectively improves the user experience.

[0208] In one embodiment, the gain is greater than or equal to -6 dBic within an angle range of 50° from the first direction (e.g., the z-direction). In one embodiment, the gain is greater than or equal to -6 dBic within an angle range of 60° from the direction pointing toward the top of the foldable electronic device 100 (e.g., the z-direction).

[0209] At the same time, the primary resonance is generated by the linear DM mode described in the above embodiment. Since the current generated by the linear DM mode is primarily generated by the first radiator 231 and is concentrated on the first radiator 231, multiple current modes are not generated on the floor 300, making it easy to determine the maximum radiation direction of the directional pattern generated by the antenna 200.

[0210] Furthermore, the linear CM mode can excite the transverse modes of the floor (which account for more than the longitudinal modes), but the currents corresponding to the transverse modes in the floor cancel each other out. Therefore, the system efficiency and radiation efficiency of the linear CM mode are low. In contrast, the linear DM mode, where the antenna radiation is primarily generated by the radiator, has better system efficiency and radiation efficiency than the linear CM mode.

[0211] In one embodiment, when the foldable electronic device 100 is in the unfolded state and the antenna 200 operates in the satellite communication frequency band, the current (for example, current intensity, current density) on the first side of the floor 300 (the side where the virtual axis of the first radiator 231 faces the first parasitic branch 241) is greater than the current on the second side of the floor 300 (the side where the virtual axis of the first radiator 231 faces away from the first parasitic branch 241).

[0212] When the foldable electronic device 100 is in the unfolded state and the antenna 200 operates in the satellite communication frequency band, the current (for example, current intensity, current density) on the first side of the first radiator 231 (the side where the virtual axis of the first radiator 231 is toward the first parasitic branch 241) is greater than the current on the second side of the first radiator 231 (the side where the virtual axis of the first radiator 231 is away from the first parasitic branch 241).

[0213] It should be understood that there is a stronger current on the floor toward the side of the first parasitic branch 241, which can better stimulate the first parasitic branch 241 to generate the first parasitic resonance, thereby improving the radiation characteristics of the radiation generated by the first parasitic resonance, and enhancing the radiation characteristics of the antenna 200 on the left side of the first direction (the first direction toward the side of the first parasitic branch 241).

[0214] Meanwhile, the current on the floor 300 described in the embodiment of the present application can be understood as the current near the edge of the floor 300 close to the radiator / parasitic branch, for example, the current within 30 mm from the edge.

[0215] In one embodiment, the first feeding point 251 is located on a first side of the virtual axis of the first radiator 231, and the first connection point 221 is located on a second side of the virtual axis of the first radiator 231. When the first electronic component exhibits an open-circuit characteristic or has an equivalent inductance greater than or equal to 5 nH, the current on the first side of the floorboard 300 is greater than that on the second side of the floorboard 300, as shown in FIG10(a).

[0216] In one embodiment, the equivalent inductance of the first electronic component can be determined based on the frequency of the first resonance. When the resonance point frequency of the first resonance is greater than or equal to 3 GHz, the equivalent inductance of the first electronic component is greater than or equal to 20 nH. When the resonance point frequency of the first resonance is greater than or equal to 2 GHz and less than 3 GHz, the equivalent inductance of the first electronic component is greater than or equal to 10 nH. When the resonance point frequency of the first resonance is greater than or equal to 1 GHz and less than 2 GHz, the equivalent inductance of the first electronic component is greater than or equal to 5 nH.

[0217] In one embodiment, the first feeding point 251 is located on a first side of the virtual axis of the first radiator 231, and the first connection point 221 is located on a second side of the virtual axis of the first radiator 231. When the first electronic component exhibits a short-circuit characteristic or has an equivalent capacitance greater than or equal to 0.5 pF, the current on the first side of the floorboard 300 is less than that on the second side of the floorboard 300, as shown in FIG10(b).

[0218] In one embodiment, the equivalent capacitance value of the first electronic component can be determined according to the frequency of the first resonance. When the resonance point frequency of the first resonance is greater than or equal to 3 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 0.5 pF. When the resonance point frequency of the first resonance is greater than or equal to 2 GHz and less than 3 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 2 pF. When the resonance point frequency of the first resonance is greater than or equal to 1 GHz and less than 2 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 3 pF.

[0219] The open / short circuit characteristic of the first electronic component can be understood as an open / short circuit between the first connection point 221 and the floor panel 300. For example, the first electronic component is a switch, with the common port of the switch coupled to the first connection point 221, and the connection port coupled to the floor panel 300. When the common port and the connection port of the switch are not electrically connected, the switch exhibits an open circuit characteristic. When the common port and the connection port of the switch are electrically connected, the switch exhibits a short circuit characteristic.

[0220] At the same time, the first electronic component may include a switch and multiple electronic components. The first electronic component can be electrically connected to different connection ports through the common port of the switch, so that the first electronic component has different capacitance / inductance characteristics. The embodiment of the present application does not limit this.

[0221] In one embodiment, when the first feeding point 251 is located on a first side of the virtual axis of the first radiator 231 and the first connection point 221 is located on a second side of the virtual axis of the first radiator 231, the first electronic component exhibits an open circuit characteristic or an equivalent inductance greater than or equal to 5 nH. In another embodiment, when the first connection point 221 is located on a first side of the virtual axis of the first radiator 231 and the first feeding point 251 is located on a second side of the virtual axis of the first radiator 231, the first electronic component exhibits a short circuit characteristic or an equivalent capacitance greater than or equal to 0.5 pF.

[0222] It should be understood that, with reference to the above-mentioned setting, when the antenna 200 generates the first resonance (the foldable electronic device 100 performs satellite communication), there will be a stronger current on the floor facing the side of the first parasitic branch 241, which can better stimulate the first parasitic branch 241 to generate the first parasitic resonance, thereby improving the radiation characteristics of the radiation generated by the first parasitic resonance and enhancing the radiation characteristics of the antenna 200 on the first side.

[0223] In one embodiment, the first frame 210 further includes a grounding point 204 between the first position 211 and the second position 212. The first frame 210 is coupled to the floor 300 at the grounding point 204, as shown in FIG11 . The grounding point 204 is located between the first feed point 251 and the first connection point 221. In one embodiment, the grounding point 204 is located in the central region of the first radiator 231. The central region includes the center of the first radiator 231, and the length of the first radiator 231 on both sides of the center is the same. The central region of the first radiator 231 can be understood as the area within 5 mm of the center of the first radiator 231.

[0224] It should be understood that the grounding point 204 can facilitate the reuse of the conductive portion of the first frame 210 between the first position 211 and the second position 212. For example, when the foldable electronic device 100 does not operate in the satellite communication frequency band, the conductive portion of the first frame 210 between the first position 211 and the grounding point 204, and the conductive portion of the first frame 210 between the second position 212 and the grounding point 204 can each serve as a radiator of a different antenna to expand the operating frequency band of the foldable electronic device 100.

[0225] In one embodiment, grounding can be achieved through a grounding member at the grounding point 204. The width of the connection between the grounding member and the first frame 210 is greater than or equal to 1 mm and less than or equal to 8 mm.

[0226] It should be understood that the grounding point and / or the connection point can be realized by a metal spring or a connecting rib structure between the metal spring and the middle plate of the middle frame, and the embodiment of the present application does not limit this.

[0227] In one embodiment, when a grounding point 204 is provided between the first position 211 and the second position 212, in order to achieve the same technical effect as in the above embodiment, it is necessary to adjust the characteristics of the first electronic component 261. In one embodiment, when the first feeding point 251 is located on the first side of the virtual axis of the first radiator 231 (between the second position 212 and the grounding point 204), and the first connection point 221 is located on the second side of the virtual axis of the first radiator 231 (between the first position 211 and the grounding point 204), the equivalent capacitance value of the first electronic component is greater than or equal to 0.5 pF and less than or equal to 1.2 pF, so that a stronger current is generated on the floor on the side facing the first parasitic branch 241, thereby better stimulating the first parasitic branch 241 to generate a first parasitic resonance, thereby improving the radiation characteristics of the radiation generated by the first parasitic resonance and enhancing the radiation characteristics of the antenna 200 on the first side.

[0228] In one embodiment, the distance between the first feeding point 251 and the adjacent end of the first radiator 231 (e.g., the second position 212) (the length of the first radiator 231) is less than or equal to one-third of the length of the first radiator 231. In one embodiment, the distance between the first feeding point 251 and the adjacent end of the first radiator 231 is less than or equal to 5 mm.

[0229] In one embodiment, the distance between the first connection point 221 and the adjacent end of the first radiator 231 (e.g., the first position 211) (the length of the first radiator 231) is less than or equal to one-third of the length of the first radiator 231. In one embodiment, the distance between the first connection point 221 and the adjacent end of the first radiator 231 is less than or equal to 5 mm.

[0230] It should be understood that moving the first feeding point 251 toward one end of the first radiator 231 facilitates miniaturization of the first radiator 231. Moving the first connection point 221 toward one end of the first radiator 231 facilitates adjustment of current distribution on the floor 300, thereby providing a wider current adjustment range.

[0231] In one embodiment, the distance between the first radiator 231 and the first parasitic branch 241 can be greater than and equal to two-tenths of the first wavelength and less than or equal to one-half of the first wavelength, where the first wavelength is the vacuum wavelength corresponding to the first resonance (e.g., the resonance point, or the center frequency of the resonance frequency band).

[0232] Correspondingly, the first radiator 231 can operate in a half-wavelength mode, and the distance between the first radiator 231 and the first parasitic branch 241 can be greater than and equal to four-tenths of the length of the first frame 210 between the first position 211 and the second position 212 and less than or equal to the length L1 of the first frame 210 between the first position 211 and the second position 212.

[0233] It should be understood that when the distance between the first radiator 231 and the first parasitic stub 241 is within the above range, the wide beam characteristics of the antenna 200 are better improved. The distance between the first radiator 231 and the first parasitic stub 241 can be understood as the distance between the center (geometric center) of the first radiator 231 and the center of the first parasitic stub 241.

[0234] In one embodiment, the length L2 of the first parasitic stub 241 (the length of the first frame 210 between the third position 213 and the fourth position 214 ) and the length L1 of the first radiator 231 (the length of the first frame 210 between the first position 211 and the second position 212 ) satisfy: L1×40%≤L2≤L1×90%.

[0235] Figures 12 and 13 show simulation results for the unfolded foldable electronic device 100 shown in Figure 9 . Figure 12 shows the S-parameter simulation results for the antenna 200 in the foldable electronic device 100 shown in Figure 9 . Figure 13 shows the system efficiency simulation results for the antenna 200 in the foldable electronic device 100 shown in Figure 9 .

[0236] As shown in FIG. 12 , the antenna may resonate around 2 GHz, which may correspond to the first resonance described in the above embodiment.

[0237] As shown in Figure 13, the antenna has good radiation efficiency and system efficiency near 2 GHz. In addition, a pit is generated near 2 GHz, which may correspond to the first parasitic resonance in the above embodiment.

[0238] It should be understood that if the antenna only produces the main resonance near 2 GHz by the first radiator, the radiation efficiency curve is a smooth curve, but the radiation efficiency curve shown in Figure 13 produces a pit near 2 GHz, which means that there is a first parasitic resonance near 2 GHz, which causes the pit in the radiation efficiency.

[0239] Figures 14 and 15 show the directional patterns of antenna 200 at 2 GHz in the foldable electronic device 100 shown in Figure 9. Figure 14 shows the directional pattern of antenna 200 when the foldable electronic device 100 is in the unfolded state and without the first parasitic stub. Figure 15 shows the directional pattern of antenna 200 when the foldable electronic device 100 is in the unfolded state and with the first parasitic stub installed.

[0240] It should be understood that in the directional diagram shown in the embodiment of the present application, the vertical axis is the angle Theta (θ) (the angle with the z-axis) with the z-direction (the direction pointing to the top of the foldable electronic device 100), and the horizontal axis is the angle Phi (φ) (the angle with the x-axis in the xoy plane) with the x-direction (the extension direction of the first side).

[0241] The z-direction (Theta = 0°, Phi = 180°) is a first direction from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100, and is oriented toward the satellite during satellite communications. When the antenna's directional pattern meets the gain requirement (e.g., -5.5 dBic), the larger the angle with the z-direction, the better the antenna's wide-beam characteristics. When the satellite moves within this angular range, the foldable electronic device 100 can still maintain good communication characteristics while remaining stationary.

[0242] As shown in Figure 14, without the first parasitic branch, when the foldable electronic device is unfolded, the current on the floor will affect the maximum radiation direction of the directional pattern generated by the antenna 200, causing the maximum radiation direction to deviate from the top direction. For example, the maximum radiation direction is offset to the right of the first direction (Phi ≤ 180°). The directional pattern generated by the antenna has a pit near Theta = 75° / 275°. With the gain greater than or equal to -5.5dBic as the limit, the antenna 200 only meets the communication requirements within 38° of Theta.

[0243] As shown in Figure 15, a first parasitic branch is provided. When the foldable electronic device is unfolded, the first parasitic resonance generated by the first parasitic branch 241 can generate radiation toward the left side of the first direction (Phi ≥ 180°). This can be combined with the radiation generated by the first radiator 231 toward the right side of the first direction (Phi ≤ 180°) influenced by the current on the floor, thereby eliminating the pit in the radiation pattern. With a gain greater than or equal to -5.5dBic as the limit, antenna 200 meets communication requirements within 60° of Theta, and antenna 200 has wide-beam characteristics.

[0244] FIG16 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0245] As shown in FIG16 , antenna 200 may further include a second parasitic stub 242. Second parasitic stub 242 is a conductive portion of first frame 210 between second position 212 and third position 213. At least a portion of second parasitic stub 242 is spaced apart from floor 300. In one embodiment, a first end of second parasitic stub 242 is open, and a second end is grounded.

[0246] It should be understood that the antenna 200 shown in FIG16 differs from the antenna 200 shown in FIG9 only in the second parasitic stub 242. In the antenna 200 shown in FIG9, both ends of the conductive portion between the second position 212 and the third position 213 are grounded, and thus cannot couple energy from the first radiator 231 to generate resonance. In contrast, in the antenna 200 shown in FIG16, the end of the conductive portion of the first frame 210 between the second position 212 and the third position 213, which is closest to the first radiator 231, is open and can serve as the second parasitic stub 242. When the foldable electronic device 100 is in the unfolded state, the second parasitic stub 242 can be used to draw current to the first parasitic stub 241, enhancing the radiation characteristics of the first parasitic stub 241 and adjusting the intensity of the radiation generated by the first parasitic stub 241 to the left of the first direction, thereby adjusting the wide-beam characteristics of the antenna 200.

[0247] In one embodiment, the first end of the second parasitic stub 242 and the first end of the first radiator 231 are opposite each other through a second insulating gap and do not contact each other. The first end of the second parasitic stub 242 may also include a second connection point 222. Antenna 200 may also include a second electronic component 262. Second electronic component 262 is coupled between the second connection point 222 and the floor 300.

[0248] It should be understood that the second electronic component 262 can be used to adjust the coupling amount between the second parasitic branch 242 and the first radiator 231, adjust the current flowing to the first parasitic branch 241, and thus adjust the intensity of the radiation generated by the first parasitic branch 241 to the left side of the first direction (the first direction is toward the side of the first parasitic branch 241).

[0249] In one embodiment, the second parasitic branch 242 can be used to generate a second parasitic resonance. The resonant frequency of the second parasitic resonance is greater than the resonant frequency of the first resonance. In one embodiment, the frequency difference between the resonant frequency of the second parasitic resonance and the resonant frequency of the first resonance is greater than or equal to 200 MHz.

[0250] It should be understood that when the resonance point of the second parasitic resonance is located in the resonance frequency band of the first resonance, the radiation efficiency in the resonance frequency band of the first resonance will be depressed, thereby reducing the radiation characteristics of the antenna 200 .

[0251] In one embodiment, the length L3 of the second parasitic stub 242 (the length of the first frame 210 between the second position 212 and the third position 213 ) and the length L1 of the first radiator 231 (the length of the first frame 210 between the first position 211 and the second position 212 ) satisfy: L1×40%≤L3≤L1×90%.

[0252] For the sake of simplicity, the parts of the antenna 200 shown in Figure 16 that are similar to the antenna 200 shown in Figure 9 are not repeated one by one. For example, the similar parts include: the position of the first radiator 231, the position of the first parasitic branch 241, and the relative position between the first radiator 231 and the first parasitic branch 241; the frequency band of satellite communication; the first resonance generated by the first radiator 231 and the first parasitic branch 241; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0253] FIG17 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG16 at 2 GHz.

[0254] The z direction (Theta=0°, Phi=180°) is a first direction from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100 .

[0255] As shown in Figure 17, compared with the simulation results shown in Figure 15 without setting the second parasitic branch, when the second parasitic branch is set, when the foldable electronic device is in the unfolded state, the second parasitic branch 242 enhances the radiation characteristics of the first parasitic branch 241, so that the radiation generated by the first parasitic branch 241 is biased toward the left side of the first direction (for example, the area of ​​180°≤Phi≤360° in the radiation pattern shown in Figure 17) and the intensity is increased.

[0256] It should be understood that the second electronic component can be used to adjust the coupling amount between the second parasitic branch and the first radiator, adjust the current flowing to the first parasitic branch, and change the intensity of the radiation generated by the first parasitic branch to the left of the first direction, thereby determining the wide beam characteristics of the antenna 200.

[0257] FIG18 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0258] 18 , the first frame 210 further includes a fifth position 215. The first position 211 is located between the second position 212 and the fifth position 215. The first frame 210 is coupled to the floor 300 at the fifth position 215.

[0259] Antenna 200 may also include a third parasitic stub 243. Third parasitic stub 243 is a conductive portion of first frame 210 between first position 211 and fifth position 215. At least a portion of third parasitic stub 243 is spaced apart from floor 300. In one embodiment, a first end of third parasitic stub 243 is grounded, and a second end is open.

[0260] The third parasitic branch 243 is used to generate a third parasitic resonance. The first resonance and the third parasitic resonance jointly support the satellite communication frequency band. In one embodiment, the resonant frequency band of the first resonance may include the transmit frequency band in satellite communication, and the resonant frequency band of the third parasitic resonance may include the receive frequency band in satellite communication.

[0261] It should be understood that the antenna 200 shown in FIG18 differs from the antenna 200 shown in FIG9 only in the third parasitic stub 243. In the antenna 200 shown in FIG9, the third parasitic stub 243 is not provided; the first resonance is generated solely by the first radiator 231 and the first parasitic stub. In contrast, in the antenna 200 shown in FIG18, the conductive portion of the first frame 210 between the first position 211 and the fifth position 215 serves as the third parasitic stub 243. The third parasitic stub 243 can be used to generate a third parasitic resonance, thereby expanding the operating frequency band of the antenna 200.

[0262] In one embodiment, the length L4 of the third parasitic stub 243 (the length of the first frame 210 between the first position 211 and the fifth position 215 ) and the length L1 of the first radiator 231 (the length of the first frame 210 between the first position 211 and the second position 212 ) satisfy: L1×40%≤L4≤L1×90%.

[0263] For the sake of simplicity, the parts of the antenna 200 shown in Figure 18 that are similar to the antenna 200 shown in Figures 9 and 16 are not repeated one by one. For example, the similar parts include: the position of the first radiator 231, the position of the first parasitic branch 241, and the relative position between the first radiator 231 and the first parasitic branch 241; the frequency band of satellite communication; the first resonance generated by the first radiator 231 and the first parasitic branch 241; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0264] FIG. 19 is an S-parameter simulation result of the antenna 200 of the foldable electronic device 100 shown in FIG. 18 in the unfolded state.

[0265] As shown in FIG19 , the antenna can resonate near 2 GHz and 2.4 GHz.

[0266] The resonance generated near 2 GHz may correspond to the first resonance described in the above embodiment, and the resonance generated near 2.4 GHz may correspond to the third parasitic resonance described in the above embodiment.

[0267] Figures 20 to 22 illustrate the directional patterns of antenna 200 when the foldable electronic device 100 shown in Figure 18 is in the unfolded state. Figure 20 illustrates the directional pattern of antenna 200 in the foldable electronic device 100 shown in Figure 18 at 2 GHz. Figure 21 illustrates the directional pattern of antenna 200 in the foldable electronic device 100 shown in Figure 18 at 2.1 GHz. Figure 22 illustrates the directional pattern of antenna 200 in the foldable electronic device 100 shown in Figure 18 at 2.2 GHz.

[0268] The z direction (Theta=0°, Phi=180°) is a first direction from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100 .

[0269] As shown in FIG. 20 to FIG. 22 , when the foldable electronic device is in the unfolded state, with the gain being greater than or equal to -6dBic as the limit, the antenna 200 meets the communication requirements within 60° of Theta, and the antenna 200 has a wide beam characteristic.

[0270] It should be understood that the first parasitic resonance generated by the first parasitic branch 241 is located near the first resonance (near 2 GHz), but radiation toward the left side of the first direction (Phi ≥ 180°) can also be generated at 2.1 GHz and 2.2 GHz, so that the radiation pattern no longer has pits, and the antenna 200 has wide beam characteristics in a wider frequency band.

[0271] FIG23 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0272] As shown in Figure 23, the third side 303 of the second frame 220 includes a sixth position 216 and a seventh position 217. The second frame 220 is coupled to the floor 300 at the sixth position 216. The second frame 220 defines a fourth insulating gap at the seventh position 217. When the foldable electronic device 100 is in the unfolded state, the first side 301 and the third side 303 serve as the top and bottom sides of the foldable electronic device 100.

[0273] It should be understood that for the sake of simplicity of discussion, in the embodiment of the present application, only the first side 301 and the third side 303 are taken as the top sides of the foldable electronic device 100 for illustration.

[0274] In one embodiment, the foldable electronic device 100 is in the unfolded state, and the sixth position 216 is located between the first position 211 and the seventh position 217 .

[0275] It should be understood that for the sake of simplicity of discussion, in the embodiment of the present application, only the sixth position 216 is located between the first position 211 and the seventh position 217 as an example for explanation. In actual production or design, the seventh position 217 is located between the first position 211 and the sixth position 216.

[0276] Antenna 200 may further include a fourth parasitic stub 244. Fourth parasitic stub 244 is a conductive portion of second frame 220 between sixth position 216 and seventh position 217. At least a portion of fourth parasitic stub 244 is spaced apart from floor 300. In one embodiment, a first end of fourth parasitic stub 244 is grounded, and a second end is open.

[0277] It should be understood that the difference between the antenna 200 shown in FIG23 and the antenna 200 shown in FIG9 is only the fourth parasitic branch 244. In the antenna 200 shown in FIG9, no parasitic branch is provided on the second frame 220 of the second shell 202. In the antenna 200 shown in FIG23, the conductive portion of the second frame 220 between the sixth position 216 and the seventh position 217 serves as the fourth parasitic branch 244. When the foldable electronic device 100 is in the unfolded state, the fourth parasitic branch 244 is used to reduce the influence of the current on the floor 300 on the main resonance of the first radiator 231, thereby adjusting the intensity of the radiation generated by the main resonance to the right of the first direction (the first direction is toward the side of the rotating shaft 203).

[0278] In one embodiment, the fourth parasitic stub 244 may be used to generate a fourth parasitic resonance.

[0279] It should be understood that when the fourth parasitic resonance approaches the first resonance, the intensity of the radiation generated by the main resonance toward the right side of the first direction (the side of the first direction toward the rotation axis 203) decreases. By adjusting the frequency difference between the fourth parasitic resonance and the first resonance, the radiation pattern generated by antenna 200 toward the right side of the first direction (the side of the first direction toward the rotation axis 203) can have different characteristics. This allows the intensity of the radiation pattern toward the right side of the first direction (the side of the first direction toward the rotation axis 203) to be flexibly adjusted, thereby achieving wide-beam characteristics for antenna 200.

[0280] For the sake of simplicity, the parts of the antenna 200 shown in Figure 23 that are similar to the antenna 200 shown in Figures 9, 16, and 18 are not repeated one by one. For example, the similar parts include: the position of the first radiator 231, the position of the first parasitic branch 241, and the relative position between the first radiator 231 and the first parasitic branch 241; the frequency band of satellite communication; the first resonance generated by the first radiator 231 and the first parasitic branch 241; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0281] FIG24 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG23 at 2 GHz.

[0282] The z direction (Theta=0°, Phi=180°) is a first direction from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100 .

[0283] As shown in FIG24 , a fourth parasitic branch 244 is provided. When the foldable electronic device is in the unfolded state, the fourth parasitic branch 244 can suppress the current (transverse traveling wave) on the floor on one side of the second shell, and reduce the influence of the current on the floor on the main resonance of the first radiator 231, so that the radiation generated by the main resonance will not be significantly offset to the right side of the first direction (for example, the area of ​​0°≤Phi≤180° in the directional diagram shown in FIG24 ).

[0284] Because the radiation generated by the main resonance does not significantly shift to the right in the first direction, when the foldable electronic device is unfolded, the radiation intensity of the antenna 200 on the right side of the first direction (for example, the region of 180° ≤ Phi ≤ 360° in the directional pattern shown in FIG24 ) is increased. Therefore, the fourth parasitic branch 244 can be used to adjust the radiation characteristics of the antenna 200 on the right side of the first direction (the side of the first direction facing the rotation axis 203), thereby providing the antenna 200 with a wide beam characteristic.

[0285] The second parasitic branch 242 enhances the radiation characteristics of the first parasitic branch 241 , so that the intensity of the radiation generated by the first parasitic branch 241 is increased toward the left side of the first direction (for example, the region of 180°≤Phi≤360° in the directional diagram shown in FIG. 24 ).

[0286] It should be understood that the second electronic component can be used to adjust the coupling amount between the second parasitic branch and the first radiator, adjust the current flowing to the first parasitic branch, and change the intensity of the radiation generated by the first parasitic branch to the left of the first direction, thereby determining the wide beam characteristics of the antenna 200.

[0287] FIG25 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0288] As shown in FIG25 , antenna 200 further includes a third electronic component 263. Fourth parasitic stub 244 includes a third connection point 223 and a fourth connection point 224. Third electronic component 263 is coupled between third connection point 223 and fourth connection point 224. Fourth parasitic stub 244 defines a fifth insulating gap between third connection point 223 and fourth connection point 224.

[0289] It should be understood that a fifth insulating gap is opened on the fourth parasitic branch 244, and the fifth insulating gap can be regarded as an equivalent capacitance (for example, a distributed capacitance) set on the fourth parasitic branch 244, and the equivalent capacitance can make the fourth parasitic branch 244 form a metamaterial structure. The fourth parasitic branch 244 with the metamaterial structure can increase the radiation aperture. After the fifth insulating gap is opened, 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 200. By coupling the third electronic component 263 connected between the third connection point 223 and the fourth connection point 224, the equivalent capacitance value of the fifth insulating gap can be adjusted, thereby adjusting the radiation characteristics of the antenna 200 (for example, the resonance point frequency of the fourth parasitic resonance generated by the fourth parasitic branch 244).

[0290] It should be understood that the antenna 200 shown in FIG25 differs from the antenna 200 shown in FIG23 only in the fifth insulating gap between the third connection point 223 and the fourth connection point 224, and the series connection of the third electronic component 263. In the antenna 200 shown in FIG23, the fourth parasitic stub 244 is a structure similar to an IFA, with one end grounded and the other open, and operates in a quarter-wavelength mode. In the antenna 200 shown in FIG25, however, the fourth parasitic stub 244 forms a metamaterial structure, and its length is greater than that of the fourth parasitic stub 244 shown in FIG23.

[0291] In one embodiment, the fourth parasitic stub 244 includes a fifth connection point. The antenna 200 further includes a fourth electronic component coupled between the fifth connection point and the ground plane 300 .

[0292] It should be understood that the fourth parasitic branch 244 is electrically connected to the floor 300 at the fifth connection point via the fourth electronic component, so that when the fourth parasitic branch 244 generates a fourth parasitic resonance, the current on the fourth parasitic branch 244 is shunted in the area near the fifth connection point. Due to the shunting in the area near the fifth connection point, the current density on the fourth parasitic branch 244 can be dispersed. In one embodiment, the current distribution of the fourth parasitic branch 244 is relatively more dispersed, thereby reducing the conductor loss of the fourth parasitic branch 244. In one embodiment, the current distribution of the fourth parasitic branch 244 is relatively more dispersed, which can increase the radiation aperture of the fourth parasitic branch 244. Due to the reduced conductor loss of the fourth parasitic branch 244 and the increase in the radiation aperture of the antenna 200, the system efficiency and radiation efficiency of the antenna can be improved.

[0293] In one embodiment, in the antenna 200 shown in FIG23 , the electrical length of the fourth parasitic stub 244 is one-quarter of the first wavelength, where the first wavelength may be the wavelength corresponding to the fourth parasitic resonance generated by the fourth parasitic stub 244. In one embodiment, in the antenna 200 shown in FIG25 , the electrical length of the fourth parasitic stub 244 is greater than three-eighths of the first wavelength. In the antenna 200 shown in FIG25 , the parasitic resonance of the fourth parasitic stub 244 may correspond to a quarter-wavelength mode. The fifth insulating gap may enable the electrical length of the fourth parasitic stub 244 to be greater than three-eighths of the first wavelength, the current on the fourth parasitic stub 244 to flow in the same direction (e.g., not in reverse direction), and the electric field between the fourth parasitic stub 244 and the ground does not flow in reverse direction. The electrical length of the fourth parasitic stub 244 increases from one-quarter of the first wavelength to more than three-eighths of the first wavelength, while still operating in the quarter-wavelength mode. In this case, the current density on the fourth parasitic branch 244 is dispersed, and the electric field density between the fourth parasitic branch 244 and the floor 300 is weakened. This reduces the conductor loss and dielectric loss caused by the fourth parasitic branch 244 and the conductors and dielectrics disposed around the fourth parasitic branch 244, thereby improving the radiation characteristics of the antenna 200. The fourth parasitic branch 244 increases the radiation aperture, effectively improving the system efficiency and radiation efficiency of the antenna 200.

[0294] The first wavelength can be understood as the vacuum wavelength corresponding to the resonance point of the parasitic resonance, or the vacuum wavelength corresponding to the center frequency of the resonant 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 elaborate on it one by one.

[0295] In one embodiment, the third electronic component 263 may include an inductor or an electronic component equivalent to a capacitor.

[0296] In one embodiment, the equivalent inductance of the third electronic component 263 may be less than or equal to 10 nH.

[0297] In one embodiment, the fourth electronic component may include a capacitor or an electronic component equivalent to a capacitor.

[0298] In one embodiment, the equivalent capacitance value of the fourth electronic component can be less than or equal to a first threshold value. The first threshold value can be designed based on the resonant frequency of the parasitic resonance generated by the fourth parasitic branch 244. When the resonant frequency of the parasitic resonance is less than or equal to 1 GHz, the first threshold value is 10 pF. When the resonant frequency of the parasitic resonance is greater than 1 GHz, the first threshold value is 2 pF.

[0299] It should be understood that by designing the equivalent inductance value of the third electronic component 263 and the equivalent capacitance value of the fourth electronic component according to the frequency of the resonance point of different parasitic resonances, the current distribution on the fourth parasitic branch 244 can be made more dispersed, the conductor loss can be reduced, and the radiation aperture of the fourth parasitic branch 244 can be increased, thereby improving the radiation characteristics of the antenna (for example, radiation efficiency and system efficiency).

[0300] In one embodiment, the distance between the third connection point 223 and / or the fourth connection point 224 and the fifth insulation gap is less than or equal to 5 mm.

[0301] The distance between the third connection point 223 and / or the fourth connection point 224 and the fifth insulating gap can be understood as the minimum distance between the third connection point 223 and / or the fourth connection point 224 and the conductors on both sides of the fifth insulating gap (the length of the fourth parasitic stub 244 between the third connection point 223 and / or the fourth connection point 224 and the fifth insulating gap). When the third electronic component 263 is electrically connected to the third connection point 223 and / or the fourth connection point 224 via a connector (e.g., a metal spring), the distance between the third electronic component 263 and the fifth insulating 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 fifth insulating gap.

[0302] In one embodiment, the fifth connection point coincides with the third connection point 223 and / or the fourth connection point 224 .

[0303] In one embodiment, when the length of the fourth parasitic branch 244 between the fifth connection point and the third connection point 223 and / or the fourth connection point 224 is less than or equal to 5 mm, the radiation aperture of the fourth parasitic branch 244 can be better adjusted to improve the radiation characteristics of the antenna 200.

[0304] For the sake of simplicity, the parts of the antenna 200 shown in Figure 25 that are similar to the antenna 200 shown in Figure 23 are not repeated one by one. For example, the similar parts include: the position of the fourth parasitic branch 244, the position of the first radiator 231, the position of the first parasitic branch 241, and the relative position between the first radiator 231 and the first parasitic branch 241; the frequency band of satellite communication; the first resonance generated by the first radiator 231 and the first parasitic branch 241; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0305] FIG26 is a directional diagram of the antenna 200 in the foldable electronic device 100 shown in FIG25 at 2 GHz.

[0306] As shown in FIG26 , the fourth parasitic branch 244 is a metamaterial structure that can still suppress the current (transverse traveling wave) on the floor on one side of the second shell, reducing the influence of the current on the floor on the main resonance of the first radiator 231, so that the radiation generated by the main resonance will not be significantly offset to the right of the first direction (for example, the area of ​​0°≤Phi≤180° in the directional diagram shown in FIG26 ).

[0307] Because the radiation generated by the main resonance does not significantly shift to the right in the first direction, when the foldable electronic device is unfolded, the radiation intensity of the antenna 200 on the left side of the first direction (for example, the region of 180° ≤ Phi ≤ 360° in the directional pattern shown in FIG24 ) is increased. Therefore, the fourth parasitic branch 244 can be used to adjust the radiation characteristics of the antenna 200 on the right side of the first direction, thereby providing the antenna 200 with a wide beam characteristic.

[0308] The second parasitic branch 242 enhances the radiation characteristics of the first parasitic branch 241, so that the radiation generated by the first parasitic branch 241 is directed to the left side of the first direction (for example, the region of 180°≤Phi≤360° in the directional diagram shown in FIG24 ) and the intensity is increased.

[0309] It should be understood that the second electronic component can be used to adjust the coupling amount between the second parasitic branch and the first radiator, adjust the current flowing to the first parasitic branch, and change the intensity of the radiation generated by the first parasitic branch to the left of the first direction, thereby determining the wide beam characteristics of the antenna 200.

[0310] FIG27 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0311] 27 , the second frame 220 defines a fifth insulating gap and a fourth insulating gap at the sixth position 216 and the seventh position 217. When the foldable electronic device 100 is in the unfolded state, the first side 301 and the third side 303 are the top and bottom sides of the foldable electronic device 100.

[0312] Antenna 200 may further include a fourth parasitic stub 244. Fourth parasitic stub 244 is a conductive portion of second frame 220 between sixth position 216 and seventh position 217. At least a portion of fourth parasitic stub 244 is spaced apart from floor 300. In one embodiment, first and second ends of fourth parasitic stub 244 are open.

[0313] In one embodiment, the fourth parasitic stub 244 may be used to generate a fourth parasitic resonance.

[0314] It should be understood that when the fourth parasitic resonance approaches the first resonance, the intensity of the radiation generated by the main resonance toward the right side of the first direction (the side of the first direction toward the rotation axis 203) decreases. By adjusting the frequency difference between the fourth parasitic resonance and the first resonance, the radiation pattern generated by antenna 200 toward the right side of the first direction (the side of the first direction toward the rotation axis 203) can have different characteristics. This allows the intensity of the radiation pattern toward the right side of the first direction (the side of the first direction toward the rotation axis 203) to be flexibly adjusted, thereby achieving wide-beam characteristics for antenna 200.

[0315] It should be understood that the antenna 200 shown in FIG27 differs only from the antenna 200 shown in FIG23 and FIG25 in that the second frame 220 has a fifth insulating gap at the sixth position 216. In the antennas 200 shown in FIG23 and FIG25, the fourth parasitic branch 244 has a structure with one end grounded and the other end open, and the fourth parasitic branch 244 operates in a quarter-wavelength mode. In the antenna 200 shown in FIG27, the first and second ends of the fourth parasitic branch 244 are open, forming a structure similar to a dipole antenna, and the fourth parasitic branch 244 operates in a half-wavelength mode.

[0316] For the sake of simplicity, the parts of the antenna 200 shown in Figure 27 that are similar to the antenna 200 shown in Figures 23 and 25 are not repeated one by one. For example, the similar parts include: the position of the fourth parasitic branch 244, the position of the first radiator 231, the position of the first parasitic branch 241, and the relative position between the first radiator 231 and the first parasitic branch 241; the frequency band of satellite communication; the first resonance generated by the first radiator 231 and the first parasitic branch 241; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0317] FIG28 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0318] As shown in FIG28 , the second frame 220 includes a sixth position 216, a seventh position 217, an eighth position 218, and a ninth position 219, which are sequentially arranged. The second frame 220 defines a fourth insulating gap at the sixth position 216, a fifth insulating gap at the seventh position 217, and a sixth insulating gap at the ninth position 219, respectively. The second frame 220 is coupled to the floor 300 at the eighth position 218.

[0319] The sixth position 216 and the seventh position 217 are located on the third side 303 of the second frame 220, and the eighth position 218 and the ninth position 219 are located on the fourth side 304. The third side 303 and the fourth side 304 intersect at an angle. In one embodiment, the length of the third side 303 is less than the length of the fourth side 304.

[0320] In one embodiment, when the foldable electronic device 100 is in the unfolded state, the first side 301 and the third side 303 are the top side or the bottom side of the foldable electronic device 100 .

[0321] It should be understood that for the sake of simplicity of discussion, in the embodiment of the present application, only the first side 301 and the third side 303 are taken as the top sides of the foldable electronic device 100 for illustration.

[0322] The foldable electronic device 100 may further include an antenna 400 . The antenna 400 includes a second radiator 232 , a fifth parasitic stub 245 , a second feeding circuit 240 , and a fifth electronic component 265 .

[0323] The second radiator 232 is a conductive portion of the second frame 220 between the sixth position 216 and the seventh position 217. The fifth parasitic stub 245 is a conductive portion of the second frame 220 between the eighth position 218 and the ninth position 219. In one embodiment, the first and second ends of the second radiator 232 are open. The first end of the fifth parasitic stub 245 is grounded, and the second end is open.

[0324] Second radiator 232 includes a second feed point 252 and a sixth connection point 226. Second feed circuit 240 is coupled to second feed point 252. Fifth electronic component 265 is coupled between sixth connection point 226 and floor 300. Second feed point 252 and sixth connection point 226 are located on either side of a virtual axis of second radiator 232, and the length of second radiator 232 on both sides of the virtual axis is the same.

[0325] The operating frequency band of the antenna 400 may include a satellite communication frequency band. When the foldable electronic device 100 is in the unfolded state, the second radiator 232 and the fifth parasitic branch 245 are used to jointly generate a second resonance, and the resonant frequency band of the second resonance includes a satellite communication frequency band.

[0326] It should be understood that the antenna 200 shown in FIG28 differs from the antenna 200 shown in FIG9 , FIG16 , and FIG18 only in the antenna 400. In the foldable electronic device 100 shown in FIG28 , the antenna 400 may be any one of the antennas 200 shown in FIG9 , FIG16 , and FIG18 .

[0327] At the same time, the antenna 200 and the antenna 400 shown in Figure 28 can have the same antenna structure or different antenna structures. The embodiment of the present application does not limit this and can be determined according to actual production or design. For the sake of simplicity of discussion, in the foldable electronic device 100 shown in Figure 28, only the antenna 200 and the antenna 400 are taken as an example of the antenna 200 shown in Figure 9.

[0328] According to an embodiment of the present application, antenna 200 and antenna 400 can both operate in the satellite communication frequency band. According to the above embodiment, antenna 200 and antenna 400 both have wide beam characteristics. Therefore, the directional pattern generated by antenna 200 and the directional pattern generated by antenna 400 can be superimposed, so that the foldable electronic device 100 has better satellite communication performance.

[0329] In one embodiment, when the foldable electronic device 100 is in a folded state, the first insulating gap opened in the first frame 210 is aligned with the fourth insulating gap opened in the second frame 220, and / or the second insulating gap opened in the first frame 210 is aligned with the fifth gap opened in the second frame 220, and / or the third insulating gap opened in the first frame 210 is aligned with the sixth insulating gap opened in the second frame 220, so as to enhance the aesthetics of the foldable electronic device 100.

[0330] It should be understood that in the embodiment of the present application, alignment can be understood as the two gaps at least partially overlapping in the thickness direction of the foldable electronic device 100.

[0331] In one embodiment, the foldable electronic device 100 is in a folded state, the first radiator 231 and the second radiator 232 at least partially overlap in the thickness direction of the foldable electronic device, and / or the first parasitic branch 241 and the fifth parasitic branch 245 at least partially overlap in the thickness direction of the foldable electronic device, so as to enhance the aesthetics of the foldable electronic device 100.

[0332] FIG29 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0333] 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 solutions described in the embodiments of the present application can also be used for other types of electronic devices 100 including larger-sized floors. The difference between the electronic device 100 shown in Figure 29 and subsequent embodiments and the electronic device 100 shown in Figures 9 to 28 is only the difference in the form of the electronic device, and similar parts will not be repeated one by one. For example, similar parts include: relevant parameters of the insulating gap opened on the frame; satellite communication frequency band; efficiency pits caused by parasitic resonances generated by parasitic branches in the working frequency band; and so on.

[0334] As shown in FIG. 29 , the electronic device 100 may include a first frame 210 , and at least a portion of the first frame 210 is spaced apart from the floor 300 .

[0335] The first frame 210 includes a first side 301 and a second side 302 that intersect at an angle.

[0336] The first side 301 includes a first position 211 and a second position 212. The first frame 210 has a first insulating gap and a second insulating gap at the first position 211 and the second position 212, respectively.

[0337] The second side 302 includes a third position 213 and a fourth position 214. The first frame 210 is coupled to the floor 300 at the third position 213. The first frame 210 has a third insulating gap at the fourth position 214.

[0338] The electronic device 100 may further include an antenna 200. The antenna 200 includes a first radiator 231, a first parasitic stub 241, a second parasitic stub 242, a first feeding circuit 230, a first switch 271, a second switch 272, a first switch branch 281, a second switch branch 282, a third switch branch 283, and a fourth switch branch 284.

[0339] The first radiator 231 is a conductive portion of the first frame 210 between the first position 211 and the second position 212. In one embodiment, at least a portion of the first radiator 231 is spaced apart from the floor 300. In one embodiment, the first end and the second end of the first radiator 231 are open.

[0340] The first parasitic stub 241 is a conductive portion of the first frame 210 between the third position 213 and the fourth position 214. In one embodiment, at least a portion of the first parasitic stub 241 is spaced apart from the floor 300. In one embodiment, the first end of the first parasitic stub 241 is grounded, and the second end is open.

[0341] The antenna 200 further includes a first feeding circuit 230. The first radiator 231 includes a first feeding point 251. The first feeding circuit 230 is coupled to the first feeding point 251.

[0342] In one embodiment, the length L0 of the first side 301 and the length L1 of the first radiator 231 satisfy: 2×L1≤L0. In one embodiment, the length L0 of the first side 301 and the length L1 of the first radiator 231 satisfy: 2.5×L1≤L0. In one embodiment, the length L0 of the first side 301 and the length L1 of the first radiator 231 satisfy: 3×L1≤L0.

[0343] It should be understood that the length L0 of the first side 301 can be understood as the dimension of the electronic device 100 in the direction (e.g., the x-direction) along which the first side 301 extends. The proportional relationship between the length L0 of the first side 201 and the length L1 of the first radiator 231 can also be understood as the proportional relationship between the dimension L0' of the floor 300 in the direction (e.g., the x-direction) along which the first side 301 extends and the length L1 of the first radiator 231. For example, 2×L1≤L0', 2.5×L1≤L0', and 3×L1≤L0'.

[0344] In one embodiment, the distance L1 ′ between the second position 212 and the second side 302 and the length L1 of the first radiator 231 satisfy: L1 ′≤ L1×0.5.

[0345] It should be understood that the distance L1′ between the second position 212 and the second side 302 can be understood as the distance between the second position 212 and the second side 302 along the extension direction (e.g., the x-direction) of the first side 301. For simplicity of discussion, the distances between the sides described in the embodiments of the present application can be understood accordingly.

[0346] The first radiator 231 is used to generate a first resonance, wherein the resonance frequency band of the first resonance includes a satellite communication frequency band.

[0347] In one embodiment, the resonant frequency band of the first resonance may include a transmitting frequency band of a satellite communication frequency band. For example, the transmitting frequency band (1980MHz-2010MHz) in the Tiantong satellite system, the transmitting frequency band (1610MHz-1626.5MHz) in the Beidou satellite system, and the transmitting frequency band (2500MHz-2520MHz) in the low-orbit satellite system. In one embodiment, the resonant frequency band of the first resonance may include a receiving frequency band of a satellite communication frequency band. For example, the receiving frequency band (2170MHz-2200MHz) in the Tiantong satellite system, the receiving frequency band (2483.5MHz-2500MHz) in the Beidou satellite system, and the receiving frequency band (2670MHz-2690MHz) in the low-orbit satellite system.

[0348] The first radiator 231 and the first parasitic branch 241 are used to generate a directional pattern of the antenna 200 .

[0349] According to an embodiment of the present application, when the length of first side 301 is relatively long (2×L1≤L0) and first radiator 231 is positioned close to second side 302 (L1'≤L1×0.5), first parasitic branch 241 deflects the directional pattern generated by antenna 200 toward first parasitic branch 241, thereby preventing the directional pattern generated by antenna 200 from being affected by floor 300. Because the directional pattern generated by antenna 200 is unaffected by floor 300, the maximum radiation direction of the directional pattern generated by antenna 200 does not significantly differ (e.g., less than or equal to 30°) from the top direction of electronic device 100 (a direction perpendicular to the extension direction of first side 301, e.g., the z-direction). Therefore, the communication satellite can always be located in an area where antenna 200 exhibits good radiation characteristics (e.g., the maximum radiation direction of the directional pattern generated by the antenna at least partially overlaps with the target radiation direction), thereby maintaining alignment with the communication satellite and effectively improving the user experience.

[0350] In one embodiment, the second side 302 further includes a fifth position 215 and a sixth position 216. The first frame 210 is coupled to the floor 300 at the sixth position 216. The first frame 210 has a fourth insulating gap at the fifth position 215.

[0351] In one embodiment, the antenna 200 further includes a second parasitic stub 242. The first radiator 241, the first parasitic stub 241, and the second parasitic stub 242 can be used to generate a directional pattern of the antenna 200.

[0352] Second parasitic stub 241 is a conductive portion of first frame 210 between fifth position 215 and sixth position 216. At least a portion of second parasitic stub 242 is spaced apart from floor 300. In one embodiment, a first end of second parasitic stub 242 is grounded and a second end is open.

[0353] It should be understood that the first parasitic branch 241 and the second parasitic branch 242 can adjust the directional pattern generated by the antenna 200 so that the directional pattern of the antenna 200 has a more flexible adjustment range.

[0354] In one embodiment, the antenna 200 further includes a first switch 271 , a second switch 272 , a first switch branch 281 , a second switch branch 282 , a third switch branch 283 , and a fourth switch branch 284 .

[0355] The first parasitic stub 241 includes a first connection point 221 . The first switch branch 281 and the second switch branch 282 are coupled between the floor 300 and the first connection point 211 through the first switch 271 .

[0356] It should be understood that the coupling connection between the first switch branch 281 and the second switch branch 282 via the first switch 271 between the floor panel 300 and the first connection point 221 can be understood as the coupling connection between the first switch 271 and the first connection point 221, or the coupling connection between the first switch 271 and the floor panel 300. For the sake of simplicity, the switching branches described in the embodiments of the present application as being coupled between the connection point and the floor panel 300 via switches can be understood accordingly, and no further details are given.

[0357] The term "switch" in this application may include one or more switching devices; the terms "first connection point," "second connection point," and "third connection point" in this application may include one or more connection points. In one embodiment, one switch branch can be coupled between the floor 300 and the parasitic branch via a switching device in the switch and a connection point in the connection point; another switch branch can be coupled between the floor 300 and the parasitic branch via another switching device in the switch and another connection point in the connection point. In this embodiment of the application, the switch is used only to switch between different switch branches coupled to the radiator, and its specific location and form are not limited.

[0358] In an embodiment of the present application, the switch branch can be understood as a circuit between the switch and the connection point (for example, the first connection point 211) or the floor 300, which can be switched to different switch branches by the switch, so that the equivalent capacitance, equivalent resistance or equivalent inductance coupled to the connection point is different.

[0359] In one embodiment, the switch branch may include one or more electronic components, and the multiple electronic components may be connected in series or in parallel to achieve different equivalent capacitance values ​​and / or equivalent inductance values ​​and / or equivalent resistance values. In one embodiment, the switch branch may also include a switch to switch the equivalent capacitance values ​​and / or equivalent inductance values ​​and / or equivalent resistance values ​​in different states of the switch branch.

[0360] In one embodiment, the switch branch may not include electronic components. The switch branch can be used to determine the boundary conditions at the first connection point. For example, the switch branch is in an open circuit state. When the switch common port is connected to the switch branch, the first connection point 221 is in an open circuit state (not coupled to the floor 300 through a device). Alternatively, the switch branch is in a short circuit state. When the switch common port is connected to the switch branch, the first connection point 221 is in a short circuit state (electrically connected to the floor 300 and no other electronic components are provided). For the sake of simplicity, in the electronic device 100 shown in Figure 29, only the example of the switch branch including equivalent electronic components is used for explanation, and no further details are given.

[0361] It should be understood that for the sake of simplicity of discussion, the switch branches described in the embodiments of the present application can be understood accordingly and will not be described one by one.

[0362] The second parasitic stub 242 includes a second connection point 222. The third switch branch 283 and the fourth switch branch 284 are coupled and connected between the floor 300 and the second connection point 200 via the second switch 272.

[0363] The first radiator 231, the first parasitic stub 241, the second parasitic stub 242, the first switch branch 281 and the third switch branch 283 are configured to generate a first resonance, wherein a resonant frequency band of the first resonance includes a satellite communication frequency band.

[0364] The first radiator 231, the first parasitic stub 241, the second parasitic stub 242, the second switch branch 282 and the fourth switch branch 284 are configured to generate a second resonance, wherein the resonant frequency band of the second resonance includes a satellite communication frequency band.

[0365] In one embodiment, the resonant frequency band of the first resonance and the resonant frequency band of the second resonance may both include a transmitting frequency band of a satellite communication frequency band. For example, a transmitting frequency band (1980MHz-2010MHz) in the Tiantong satellite system, a transmitting frequency band (1610MHz-1626.5MHz) in the Beidou satellite system, and a transmitting frequency band (2500MHz-2520MHz) in the low-orbit satellite system. In one embodiment, the resonant frequency band of the first resonance and the resonant frequency band of the second resonance may both include a receiving frequency band of a satellite communication frequency band. For example, a receiving frequency band (2170MHz-2200MHz) in the Tiantong satellite system, a receiving frequency band (2483.5MHz-2500MHz) in the Beidou satellite system, and a receiving frequency band (2670MHz-2690MHz) in the low-orbit satellite system.

[0366] In one embodiment, the first radiator 231, the first parasitic stub 241, the second parasitic stub 242, the first switch branch 281, and the third switch branch 283 are configured to generate a first radiation pattern. The first radiator 231, the first parasitic stub 241, the second parasitic stub 242, the second switch branch 282, and the fourth switch branch 284 are configured to generate a second radiation pattern. The first radiation pattern and the second radiation pattern are different.

[0367] The fact that the first directional pattern and the second directional pattern are different may be understood as that the maximum radiation direction of the first directional pattern and the maximum radiation direction of the second directional pattern are different.

[0368] It should be understood that the maximum radiation direction described in the embodiments of the present application can be understood as the direction of the maximum gain in the directional pattern generated by the antenna in one embodiment, and can also be understood as the direction of the maximum gain in a continuous radiation area (in which the gain is greater than or equal to a threshold) in the directional pattern generated by the antenna in another embodiment, and can also be understood as the direction of the maximum gain in a preset radiation area (for example, the top area of ​​an electronic device) in the directional pattern generated by the antenna in another embodiment (for example, the antenna has multiple maximum radiation directions, one toward the top and one toward the back cover. Assuming that the top is the main radiation area, the back cover direction can have a single angle that exceeds the maximum gain of the main radiation area, but the maximum radiation direction described in the embodiments of the present application only considers the direction of the maximum gain in the main radiation area in the directional pattern). The relevant descriptions in the embodiments of the present application can be understood accordingly, and for the sake of brevity, they will not be repeated one by one.

[0369] It should be understood that when the first radiator 231 is positioned near the second edge 302 (L1' ≤ L1 × 0.5), the first parasitic branch 241 and the second parasitic branch 242 can be coupled to different switch branches to enable the antenna 200 to have different directional patterns in the satellite communication frequency band. The electronic device 100 can switch the switch branch coupled to the parasitic branch based on the relative position of the communication satellite and the electronic device 100, so that the communication satellite is always located in an area where the antenna 200 has good radiation characteristics (for example, the maximum radiation direction of the directional pattern generated by the antenna at least partially overlaps with the target radiation direction), thereby maintaining the alignment with the communication satellite and effectively improving the user experience.

[0370] In one embodiment, when the first switch branch 281 is coupled to the first connection point 221 and the third switch branch 283 is coupled to the second connection point 222, an electrical signal is fed into the first feed circuit 230, the first radiator 231 is configured to generate a first main resonance, the first parasitic branch 241 is configured to generate a first parasitic resonance, and the second parasitic branch 242 does not generate a parasitic resonance. The first main resonance and the first parasitic resonance together form the aforementioned first resonance (because the frequency difference between the resonance point of the first parasitic resonance and the resonance point of the first main resonance is small, in the S-parameter diagram, the first main resonance and the first parasitic resonance are merged into a single resonance).

[0371] It should be understood that the absence of parasitic resonance in the second parasitic branch 242 can be understood as the third switch branch 283 being configured to cause the parasitic resonance generated by the second parasitic branch 242 to be located outside the resonant frequency band of the first main resonance. For example, the resonant frequency of the parasitic resonance generated by the second parasitic branch 242 is greater than or equal to 300 MHz relative to the resonant frequency of the first main resonance. For the sake of simplicity, in the embodiments of this application, the absence of parasitic resonance can be understood accordingly and will not be further elaborated.

[0372] In one embodiment, when the second switch branch 282 is coupled to the first connection point 221 and the fourth switch branch 284 is coupled to the second connection point 222, the first feed circuit 230 feeds an electrical signal, the first radiator 231 is configured to generate a second main resonance, the first parasitic branch 241 does not generate a parasitic resonance, and the second parasitic branch 242 is configured to generate a second parasitic resonance. The second main resonance and the second parasitic resonance together form the aforementioned second resonance (because the frequency difference between the resonance point of the second parasitic resonance and the resonance point of the second main resonance is small, in the S-parameter diagram, the second main resonance and the second parasitic resonance are merged into a single resonance).

[0373] In one embodiment, at the resonance point of the first resonance, the current on the first radiator 231 and the current on the first parasitic stub 241 have the same direction, as shown in FIG30 .

[0374] It should be understood that when the current on the first radiator 231 and the current on the first parasitic stub 241 are in the same direction, the first parasitic stub 241 can deflect the radiation pattern generated by the antenna 200 toward the side close to the first parasitic stub 241 .

[0375] In one embodiment, at the resonance point of the second resonance, the current on the first radiator 231 and the current on the second parasitic stub 242 are opposite to each other, as shown in FIG31 .

[0376] It should be understood that when the current on the first radiator 231 and the current on the second parasitic stub 242 are in opposite directions, the second parasitic stub 242 can deflect the radiation pattern generated by the antenna 200 toward a side away from the second parasitic stub 242 .

[0377] In one embodiment, the distance between the third position 213 and the first side 301 is less than the distance between the fourth position 214 and the first side 301. The grounding end of the first parasitic stub 241 is close to the first side 301. The distance L2' between the third position 213 and the first side 301 and the length L2 of the first parasitic stub 241 satisfy the following relationship: 0 ≤ L2' ≤ L2 × 2.5.

[0378] In one embodiment, the distance between the fifth position 215 and the first side 301 is less than the distance between the sixth position 216 and the first side 301. The open end of the second parasitic stub 242 is closer to the first side 301. The distance L3′ between the fifth position 215 and the first side 301 and the length L3 of the second parasitic stub 242 satisfy the following relationship: L3 ≤ L3′ ≤ L3×5.

[0379] It should be understood that in the embodiments of the present application, only the grounded end of the first parasitic branch 241 is close to the first edge 301, and the open end of the second parasitic branch 242 is close to the first edge 301. In actual production or application, the grounded end of the first parasitic branch 241 and the grounded end of the second parasitic branch 242 can both be close to the first edge 301, or the open end of the first parasitic branch 241 and the open end of the second parasitic branch 242 can both be close to the first edge 301. In this case, reference can be made to the parasitic branches with grounded ends or open ends close to the first edge in the above embodiments. For the sake of brevity, each of these will not be described in detail.

[0380] In one embodiment, the length L2 of the first parasitic stub 241 and the length L1 of the first radiator 231 satisfy: L1×0.3≤L2≤L1×0.6. In one embodiment, the length L3 of the second parasitic stub 242 and the length L1 of the first radiator 231 satisfy: L1×0.3≤L3≤L1×0.6.

[0381] It should be understood that the first and second ends of the first radiator 231 are open ends. The first radiator 231 can operate in half-wavelength mode. The first end of the first parasitic stub 241 is grounded, and the second end is open. The first end of the second parasitic stub 242 is grounded, and the second end is open. The first and second parasitic stubs 241, 242 can operate in quarter-wavelength mode.

[0382] In one embodiment, the length L2 of the first parasitic stub 241 and the length L3 of the second parasitic stub 242 satisfy: L2×0.9≤L3≤L2×1.1.

[0383] It should be understood that when the length L2 of the first parasitic branch 241 and the length L3 of the second parasitic branch 242 are substantially the same, the antenna 200 has better symmetry and better radiation characteristics.

[0384] In one embodiment, the first switch branch 281 , the second switch branch 282 , the third switch branch 283 and the fourth switch branch 284 may be capacitors or elements equivalent to capacitors.

[0385] In one embodiment, when the length L2 of the first parasitic stub 241 and the length L3 of the second parasitic stub 242 are substantially the same (L2×0.9≤L3≤L2×1.1), the equivalent capacitance of the first switch branch 281 is greater than the equivalent capacitance of the fourth switch branch 284 .

[0386] It should be understood that when the first switching branch 281 is coupled to the first connection point 221, the resonance point of the first parasitic resonance generated by the first parasitic stub 241 is higher than the resonance point of the first resonance, thereby causing the current in the first radiator 231 and the current in the first parasitic stub 241 to have the same direction. In one embodiment, the frequency difference between the resonance point frequency of the first parasitic resonance and the resonance point frequency of the first resonance is less than or equal to 100 MHz. Because the first parasitic resonance is weakly excited, the frequency difference between the resonance point frequency of the first parasitic resonance and the resonance point frequency of the first resonance can be understood in the same way as the radiation efficiency pit described in the above embodiment.

[0387] When the fourth switch branch 284 is coupled to the second connection point 222, the resonance point of the second parasitic resonance generated by the second parasitic branch 242 is lower than the resonance point of the second resonance, thereby exciting the floor 300 to generate a standing wave, thereby causing the current in the first radiator 231 and the current in the second parasitic branch 242 to flow in opposite directions. In one embodiment, the frequency difference between the resonance point frequency of the second parasitic resonance and the resonance point frequency of the second resonance is less than or equal to 200 MHz. Because the second parasitic resonance is weakly excited, the frequency difference between the resonance point frequency of the second parasitic resonance and the resonance point frequency of the second resonance can be understood in the same way as the radiation efficiency pit described in the above embodiment.

[0388] Correspondingly, to achieve the above technical effect, when the length L2 of the first parasitic branch 241 and the length L3 of the second parasitic branch 242 are substantially the same, the equivalent capacitance value of the first switch branch 281 is greater than the equivalent capacitance value of the fourth switch branch 284 .

[0389] In one embodiment, the length of the first parasitic stub 241 between the first connection point 221 and the fourth position 214 is less than or equal to one third of the length of the first parasitic stub 241. In one embodiment, the length of the first parasitic stub 241 between the first connection point 221 and the fourth position 214 is less than or equal to 5 mm.

[0390] In one embodiment, the length of the second parasitic stub 242 between the second connection point 222 and the fifth position 215 is less than or equal to one third of the length of the second parasitic stub 242. In one embodiment, the length of the second parasitic stub 242 between the second connection point 222 and the fifth position 215 is less than or equal to 5 mm.

[0391] It should be understood that the open end of the radiator (parasitic branch) has a stronger electric field. When the connection point is located in the vicinity of the open end, the radiation characteristics of the antenna 200 have a larger adjustment range.

[0392] In one embodiment, antenna 200 further includes a first electronic component. A first parasitic stub 241 includes a third connection point and a fourth connection point. The first parasitic stub 241 has a fifth insulating gap between the third connection point and the fourth connection point. The first electronic component is coupled and connected between the third connection point and the fourth connection point.

[0393] In one embodiment, antenna 200 further includes a second electronic component. A second parasitic stub 242 includes a fifth connection point and a sixth connection point. The second parasitic stub 242 has a sixth insulating gap between the fifth and sixth connection points. The second electronic component is coupled and connected between the fifth and sixth connection points.

[0394] It should be understood that the first parasitic branch 241 and / or the second parasitic branch 242 can form a metamaterial structure to expand the radiation aperture of the antenna 200, thereby improving the radiation characteristics of the antenna 200. Similarly, the metamaterial structure is similar to the metamaterial structure in the above embodiment, and for the sake of brevity, it will not be described in detail.

[0395] In one embodiment, electronic components are coupled between the first radiator 231 and the floor 300 , as shown in FIG. 32 and FIG. 33 .

[0396] It should be understood that the connection method of this electronic component is similar to the connection method of the first electronic component 261 in the electronic device 100 shown in Figures 9 to 28. For the sake of brevity, they will not be described in detail.

[0397] In one embodiment, the third position 213, the fourth position 214, the fifth position 215, and the sixth position 216 are sequentially arranged on the second side 302. In one embodiment, the open end of the first parasitic branch 241 and the open end of the second parasitic branch 242 are close to each other.

[0398] In one embodiment, fourth position 214 and fifth position 215 overlap, as shown in FIG32 . The third insulating gap overlaps the fourth insulating gap. One end of first parasitic stub 241 and one end of second parasitic stub 242 face each other and do not contact each other. First parasitic stub 241 and second parasitic stub 242 can together form a structure similar to a slot antenna.

[0399] In one embodiment, the fourth position 214, the third position 213, the sixth position 216, and the fifth position 215 are sequentially arranged on the second side 302, as shown in Figure 33. In one embodiment, the grounding end of the first parasitic stub 241 and the grounding end of the second parasitic stub 242 are close to each other.

[0400] In one embodiment, the third position 213 and the sixth position 215 overlap, as shown in Figure 33. The first parasitic stub 241 and the second parasitic stub 242 may together form a structure similar to a T-antenna.

[0401] It should be understood that in the embodiments of the present application, only the grounding end of the first parasitic branch 241 and the grounding end of the second parasitic branch 242 are close to each other, or the open end of the first parasitic branch 241 and the open end of the second parasitic branch 242 are close to each other are used as examples for illustration. In actual production or design, the open end of the first parasitic branch 241 can also be close to the grounding end of the second parasitic branch 242, and the embodiments of the present application do not limit this.

[0402] At the same time, in the embodiment of the present application, only the first parasitic branch 241 is closer to the first edge 301 than the second parasitic branch 242 is used as an example for illustration. In actual production or design, the first parasitic branch 241 can also be farther away from the first edge 301 than the second parasitic branch 242. The embodiment of the present application does not limit this.

[0403] It should be understood that in the above-described embodiment (electronic device 100 shown in Figures 29 to 33), when first radiator 231 resonates, one of first parasitic stub 241 and second parasitic stub 242 generates a parasitic resonance. Electronic device 100 switches the parasitic stub generating the parasitic resonance to cause antenna 200 to generate different directional patterns. In actual production or design, when first radiator 231 resonates, first parasitic stub 241 and second parasitic stub 242 can both generate a parasitic resonance. By switching the direction of the current in first parasitic stub 241 and second parasitic stub 242, antenna 200 can generate different directional patterns.

[0404] In one embodiment, when the first switch branch 281 is coupled to the first connection point 221 and the third switch branch 283 is coupled to the second connection point 222, the first feed circuit 230 feeds an electrical signal, the first radiator 231 is configured to generate a first main resonance, and the first parasitic branch 241 and the second parasitic branch 242 jointly generate a first parasitic resonance. The first main resonance and the first parasitic resonance jointly form the first resonance.

[0405] In one embodiment, at the resonance point of the first resonance, the current on the first radiator 231 and the current on the first parasitic stub 241 and the current on the second parasitic stub 242 have the same direction, as shown in FIG34 .

[0406] It should be understood that when the current on the first radiator 231 and the current on the first parasitic branch 241 and the current on the second parasitic branch 242 are in the same direction, the first parasitic branch 241 and the second parasitic branch 242 can cause the radiation pattern generated by the antenna 200 to deflect toward the side close to the first parasitic branch 241 (the second parasitic branch 242).

[0407] In one embodiment, when the second switch branch 282 is coupled to the first connection point 221 and the fourth switch branch 284 is coupled to the second connection point 222, the first feed circuit 230 feeds an electrical signal, the first radiator 231 is configured to generate a second main resonance, and the first parasitic branch 241 and the second parasitic branch 242 jointly generate a second parasitic resonance. The second main resonance and the second parasitic resonance together form the aforementioned second resonance.

[0408] In one embodiment, at the resonance point of the second resonance, the current on the first radiator 231 and the current on the first parasitic stub 241 and the current on the second parasitic stub 242 are in opposite directions, as shown in FIG35 .

[0409] It should be understood that when the current on the first radiator 231 and the current on the first parasitic branch 241 and the current on the second parasitic branch 242 are opposite, the first parasitic branch 241 and the second parasitic branch 242 can cause the radiation pattern generated by the antenna 200 to deflect toward the side away from the first parasitic branch 241 (the second parasitic branch 242).

[0410] It should be understood that for the sake of simplicity of discussion, in the electronic device 100 shown in Figures 34 and 35, only the overlap of the fourth position 214 and the fifth position 215 is used as an example for explanation. In actual production or design, other conductor parts can also be provided between the first parasitic branch 241 and the second parasitic branch 242, which will not be described one by one.

[0411] At the same time, in the electronic device 100 shown in Figures 34 and 35, only the antenna 200 including the first parasitic branch 241 and the second parasitic branch 242 is used as an example for explanation. In actual production or design, the antenna 200 may include multiple parasitic branches, for example, also including a third parasitic branch. The parasitic resonance is jointly generated by the first parasitic branch 241, the second parasitic branch 242 and the third parasitic branch. For the sake of brevity, they will not be described one by one.

[0412] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A foldable electronic device, characterized in that, Comprising: A first housing and a floor, wherein, The first housing includes a first frame, the first frame includes a first side and a second side intersecting at an angle, the first frame includes a first position, a second position, a third position, and a fourth position arranged in sequence, the first position and the second position are located on the first side, the third position and the fourth position are located on the second side, the first frame has a first insulating gap, a second insulating gap, and a third insulating gap at the first position, the second position, and the fourth position respectively, and the first frame is coupled to the floor at the third position; A second housing and a first rotating shaft, the first rotating shaft is located between the first housing and the second housing, and the first rotating shaft is rotatably connected to the first housing and the second housing respectively; and A first antenna, the first antenna includes: A first radiator and a first parasitic stub, the first radiator is the conductive part of the first frame between the first position and the second position, the first parasitic stub is the conductive part of the first frame between the third position and the fourth position, at least part of the first radiator is spaced apart from the floor, and at least part of the first parasitic stub is spaced apart from the floor; and A first feeding circuit and a first electronic component, the first radiator includes a first feeding point and a first connection point, the first feeding circuit is coupled to the first feeding point, the first electronic component is coupled between the floor and the first connection point, the first feeding point and the first connection point are respectively located on both sides of the virtual axis of the first radiator, and the lengths of the first radiator on both sides of the virtual axis are the same; Wherein, based on the foldable electronic device being in the unfolded state, 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 wherein, the first radiator, the first parasitic stub, and the first electronic component are used to generate the radiation pattern of the antenna.

2. The foldable electronic device according to claim 1, wherein Based on the foldable electronic device being in the unfolded state and the first antenna operating in the satellite communication frequency band, the current on the floor on the first side of the virtual axis is greater than the current on the floor on the second side of the virtual axis, the first parasitic stub is located on the first side, and the first rotating shaft is located on the second side.

3. The foldable electronic device according to claim 1 or 2, characterized in that, Based on the foldable electronic device being in the unfolded state, the beam width of the first antenna is related to the first parasitic stub.

4. The foldable electronic device according to any one of claims 1 to 3, wherein Based on the first feeding point being located on the first side of the virtual axis and the first connection point being located on the second side of the virtual axis, the first electronic component has an open - circuit characteristic, or, Based on the resonance point frequency of the first resonance being greater than or equal to 3 GHz, the equivalent inductance value of the first electronic component is greater than or equal to 20 nH. Based on the resonant point frequency of the first resonance being greater than or equal to 2 GHz and less than 3 GHz, the equivalent inductance value of the first electronic component is greater than or equal to 10 nH. Based on the resonant point frequency of the first resonance being greater than or equal to 1 GHz and less than 2 GHz, the equivalent inductance value of the first electronic component is greater than or equal to 5 nH.

5. The foldable electronic device according to any one of claims 1 to 3, wherein Based on the first connection point being located on the first side of the virtual axis, the first feeding point being located on the second side of the virtual axis, the first electronic component exhibits a short-circuit characteristic, or Based on the resonant point frequency of the first resonance being greater than or equal to 3 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 0.5 pF. Based on the resonant point frequency of the first resonance being greater than or equal to 2 GHz and less than 3 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 2 pF. Based on the resonant point frequency of the first resonance being greater than or equal to 1 GHz and less than 2 GHz, the equivalent capacitance value of the first electronic component is greater than or equal to 3 pF.

6. The foldable electronic device according to any one of claims 1 to 5, wherein The distance between the first feeding point and the first position or the second position is less than or equal to one-third of the length of the first radiator, and / or The distance between the first connection point and the first position or the second position is less than or equal to one-third of the length of the first radiator.

7. The foldable electronic device according to any one of claims 1 to 6, wherein The first radiator is used to generate a main resonance, the first parasitic stub is used to generate a first parasitic resonance, the first parasitic resonance is located within the resonant frequency band of the main resonance, and the main resonance and the first parasitic resonance together form the first resonance.

8. The foldable electronic device according to any one of claims 1 to 7, wherein The antenna generates an efficiency pit at a first frequency point, and the frequency difference between the resonant point frequency of the first resonance and the first frequency point frequency is less than or equal to 50 MHz.

9. The foldable electronic device according to any one of claims 1 to 8, wherein Based on the foldable electronic device performing satellite communication through the first antenna, the gain of the radiation pattern generated by the first antenna within an angle range of 60° with respect to the first direction is greater than or equal to -6 dBic, and the first direction is the direction from the bottom of the foldable electronic device to the top of the foldable electronic device.

10. The foldable electronic device according to any one of claims 1 to 9, wherein The first antenna further includes a second parasitic stub, the second parasitic stub is the conductive part of the first frame between the second position and the third position, and at least a part of the second parasitic stub is spaced apart from the ground plane.

11. The foldable electronic device according to claim 10, wherein The first end of the second parasitic stub is opposite to the first end of the first radiator through the second insulating gap and they do not contact each other. The first antenna further includes a second electronic component. The first end of the second parasitic stub includes a second connection point. The second electronic component is coupled between the ground plane and the second connection point.

12. The foldable electronic device according to any one of claims 1 to 11, wherein The first frame further includes a fifth position. The first position is located between the fifth position and the second position. The first frame is coupled to the ground plane at the fifth position. The first antenna further includes a third parasitic stub. The third parasitic stub is a conductive portion of the first frame between the first position and the fifth position. At least a portion of the third parasitic stub is spaced apart from the ground plane.

13. The foldable electronic device according to any one of claims 1 to 12, wherein The second housing includes a second frame. The third side of the second frame includes a sixth position and a seventh position. The second frame is coupled to the ground plane at the sixth position. The second frame defines a fourth insulating gap at the seventh position. The first antenna further includes a fourth parasitic stub. The fourth parasitic stub is a conductive portion of the second frame between the sixth position and the seventh position. At least a portion of the fourth parasitic stub is spaced apart from the ground plane. Based on the foldable electronic device being in the unfolded state, the first side and the third side are the top side or the bottom side of the foldable electronic device.

14. The foldable electronic device according to claim 13, wherein The first antenna further includes a third electronic component. The fourth parasitic stub includes a third connection point and a fourth connection point. The fourth parasitic stub defines a fifth insulating gap between the third connection point and the fourth connection point. The third electronic component is coupled between the third connection point and the fourth connection point.

15. The foldable electronic device according to claim 14, wherein The distance between the third connection point and the fifth insulating gap is less than or equal to 5 mm, and / or The distance between the fourth connection point and the fifth insulating gap is less than or equal to 5 mm.

16. The foldable electronic device according to any one of claims 13 to 15, wherein Based on the foldable electronic device being in the unfolded state, the sixth position is located between the first position and the seventh position.

17. The electronic device according to any one of claims 1 to 12, wherein The second housing includes a second frame. The third side of the second frame includes a sixth position and a seventh position. The second frame defines a fourth insulating gap and a fifth insulating gap at the sixth position and the seventh position respectively. The first antenna further includes a fourth parasitic stub. The fourth parasitic stub is a conductive portion of the second frame between the sixth position and the seventh position. At least a portion of the fourth parasitic stub is spaced apart from the ground plane. Based on the foldable electronic device being in the unfolded state, the first side and the third side are the top side or the bottom side of the foldable electronic device.

18. The foldable electronic device according to any one of claims 1 to 12, wherein the second housing includes a second frame, the second frame includes a third side and a fourth side that intersect at an angle, the second frame includes a sixth position, a seventh position, an eighth position, and a ninth position arranged in sequence, the sixth position and the seventh position are located on the third side, the eighth position and the ninth position are located on the fourth side, the second frame has a fourth insulating gap, a fifth insulating gap, and a sixth insulating gap at the sixth position, the seventh position, and the ninth position respectively, and the second frame is coupled to the floor at the eighth position; the foldable electronic device may further include a second antenna, the second antenna includes: a second radiator and a fifth parasitic stub, the second radiator is the conductive part of the second frame between the sixth position and the seventh position, the fifth parasitic stub is the conductive part of the second frame between the eighth position and the ninth position, at least part of the second radiator is spaced apart from the floor, and at least part of the fifth parasitic stub is spaced apart from the floor; and a second feeding circuit and a fourth electronic component, the second radiator includes a second feeding point and a fifth connection point, the second feeding circuit is coupled to the second feeding point, and the fourth electronic component is coupled and connected between the floor and the fifth connection point; wherein, based on the foldable electronic device being in the unfolded state, the first side and the third side are the top side or the bottom side of the foldable electronic device; based on the foldable electronic device being in the unfolded state, the second radiator and the fourth parasitic stub are configured to generate a second resonance, and the resonance frequency band of the second resonance includes a satellite communication frequency band.

19. The foldable electronic device according to claim 18, wherein based on the foldable electronic device being in the folded state, the first radiator and the second radiator at least partially overlap in a second direction, and / or, the first parasitic stub and the fifth parasitic stub at least partially overlap in the second direction, and the second direction is the thickness direction of the foldable electronic device.

20. The foldable electronic device according to claim 18 or 19, wherein based on the foldable electronic device being in the folded state, the first insulating gap is aligned with the fourth insulating gap, and / or, the second insulating gap is aligned with the fifth gap, and / or, the third insulating gap is aligned with the sixth insulating gap.

21. The foldable electronic device according to any one of claims 1 to 20, wherein the ratio of the size of the floor in the extension direction of the first side when the foldable electronic device is in the unfolded state to that in the folded state is greater than or equal to 1.8 and less than or equal to 2.

2.

22. The foldable electronic device according to any one of claims 1 to 21, wherein The foldable electronic device performs at least one of the following services in the satellite communication frequency band: satellite short message receiving and / or sending, satellite call making and / or answering, and satellite data.

23. An electronic device, characterized in that, Comprising: A floor; A frame, the frame including a first side and a second side intersecting at an angle, The first side includes a first position and a second position, and the frame has a first insulating gap and a second insulating gap at the first position and the second position respectively, The second side includes a third position and a fourth position, the frame is coupled to the floor at the third position, and the frame has a third insulating gap at the fourth position; And An antenna, the antenna including: A radiator and a first parasitic branch, the radiator is the conductive part of the frame between the first position and the second position, the first parasitic branch is the conductive part of the frame between the third position and the fourth position, at least part of the radiator is spaced from the floor, and at least part of the first parasitic branch is spaced from the floor; and A feeding circuit, the radiator includes a feeding point, and the feeding circuit is coupled to the feeding point; Wherein, the length L0 of the first side and the length L1 of the radiator satisfy: 2×L1 ≤ L0; The distance L1' between the second position and the second side and the length L1 of the radiator satisfy: L1' ≤ L1×0.5; And wherein, the radiator is used to generate a first resonance, the resonance frequency band of the first resonance includes the satellite communication frequency band, and wherein, the radiator and the first parasitic branch are used to generate the radiation pattern of the antenna.

24. The electronic device according to claim 23, characterized in that, The electronic device further includes: An electronic component, the radiator includes a first connection point, the electronic component is coupled between the floor and the first connection point, the feeding point and the first connection point are respectively located on both sides of the virtual axis of the radiator, and the lengths of the radiator on both sides of the virtual axis are the same; Wherein, the radiator, the first parasitic branch and the electronic component are used to generate the radiation pattern of the antenna.

25. The electronic device according to claim 23 or 24, wherein The second side further includes a fifth position and a sixth position, the frame has a fourth insulating gap at the fifth position, and the frame is coupled to the floor at the sixth position; And The antenna further includes: A second parasitic branch, the second parasitic branch is the conductive part of the frame between the fifth position and the sixth position, and at least part of the second parasitic branch is spaced from the floor; Wherein, the radiator, the first parasitic branch and the second parasitic branch are used to generate the radiation pattern of the antenna.

26. The electronic device according to claim 25, wherein The antenna further includes: A first switch, a first switch branch and a second switch branch, the first parasitic branch includes a second connection point, and the first switch branch and the second switch branch are coupled between the floor and the second connection point through the first switch; and A second switch, a third switch branch, and a fourth switch branch, wherein the second parasitic stub includes a third connection point, and the third switch branch and the fourth switch branch are coupled between the ground plane and the third connection point through the second switch; The radiator, the first parasitic stub, the second parasitic stub, the first switch branch, and the third switch branch are configured to generate a first resonance, and a resonance frequency band of the first resonance includes a satellite communication frequency band; The radiator, the first parasitic stub, the second parasitic stub, the second switch branch, and the fourth switch branch are configured to generate a second resonance, and a resonance frequency band of the second resonance includes the satellite communication frequency band.

27. The electronic device according to claim 26, wherein The radiator, the first parasitic stub, the second parasitic stub, the first switch branch, and the third switch branch are configured to generate a first radiation pattern; The radiator, the first parasitic stub, the second parasitic stub, the second switch branch, and the fourth switch branch are configured to generate a second radiation pattern, and the first radiation pattern is different from the second radiation pattern.

28. The electronic device according to any one of claims 25 to 27, wherein A distance between the third position and the first side is less than a distance between the fourth position and the first side, and a distance L2' between the third position and the first side and a length L2 of the first parasitic stub satisfy: 0≤L2'≤L2×2.5, and / or, A distance between the fifth position and the first side is less than a distance between the sixth position and the first side, and a distance L3' between the fifth position and the first side and a length L3 of the second parasitic stub satisfy: L3≤L3'≤L3×5.

29. The electronic device according to any one of claims 25 to 28, wherein The length L2 of the first parasitic stub and the length L3 of the second parasitic stub satisfy: L2×0.9≤L3≤L2×1.

1.

30. The electronic device according to any one of claims 25 to 29, wherein The length L2 of the first parasitic stub and the length L1 of the radiator satisfy: L1×0.3≤L2≤L1×0.6, and / or, The length L3 of the second parasitic stub and the length L1 of the radiator satisfy: L1×0.3≤L3≤L1×0.

6.

31. The electronic device according to any one of claims 25 to 30, wherein The antenna further includes a first electronic component and / or a second electronic component; The first parasitic stub includes a fourth connection point and a fifth connection point, and the first parasitic stub has a fifth insulating gap between the fourth connection point and the fifth connection point, and the first electronic component is coupled between the fourth connection point and the fifth connection point, and / or, The second parasitic stub includes a sixth connection point and a seventh connection point. The second parasitic stub has a sixth insulating gap between the sixth connection point and the seventh connection point. The second electronic component is coupled between the sixth connection point and the seventh connection point.

32. The electronic device according to any one of claims 25 to 31, wherein the third position, the fourth position, the fifth position, and the sixth position are arranged in sequence on the second side.

33. The electronic device according to claim 32, wherein the fourth position and the fifth position coincide.

34. The electronic device according to any one of claims 25 to 31, wherein the fourth position, the third position, the sixth position, and the fifth position are arranged in sequence on the second side.

35. The electronic device according to claim 34, wherein the third position and the sixth position coincide.

36. The electronic device according to any one of claims 26 to 35, wherein at the resonance point of the first resonance, the current on the radiator and the current on the first parasitic stub are in the same direction, and / or at the resonance point of the second resonance, the current on the radiator and the current on the second parasitic stub are in opposite directions.

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