Foldable electronic equipment

Abstract

The invention provides a foldable electronic device. The foldable electronic device comprises an antenna. The working frequency band of the antenna comprises a satellite communication frequency band. The antenna comprises a radiator and a parasitic branch. A part of the conductive frame of the housing is used as a radiator and a parasitic branch. When the foldable electronic device is in an unfolded state, the radiator and the parasitic branch can generate radiation beams facing the two 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 the posture of holding the foldable electronic device during satellite communication, and the experience of the user during satellite communication can be improved.

Description

[0001] This application claims the priority of a Chinese patent application with the application number 202311868099.2 and the application title "A Foldable Electronic Device" submitted to the Chinese Patent Office on December 29, 2023, the entire content of which is incorporated herein by reference. Technical Field

[0002] This application relates to the field of wireless communication, and particularly to a foldable electronic device. Background Art

[0003] Currently, in existing terminal electronic devices, the frame is used as an antenna radiator. For example, in a satellite communication system, the frame radiator is mainly used to form a linearly polarized antenna. When a user conducts satellite communication, the electronic device needs to be pointed at the sky in a specific orientation to complete the communication connection with the satellite.

[0004] However, for a foldable electronic device, in the unfolded state, the radiation direction of the antenna may deflect, increasing the difficulty of establishing a communication connection with the satellite and greatly affecting the user's communication experience. Summary of the Invention

[0005] This application provides a foldable electronic device, which includes an antenna. The antenna uses the conductive part of the frame of the foldable electronic device as the main radiator and parasitic branches, which can improve 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, including: a first housing and a floor. The first housing includes a first frame, and 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, and 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. 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 respectively rotatably connected to the first housing and the second housing; and a first antenna. The first antenna includes: a first radiator and a first parasitic stub. The first radiator is a conductive part of the first frame between the first position and the second position, and the first parasitic stub is a 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, and 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 an unfolded state, the first radiator is used to generate a first resonance, and the resonance frequency band of the first resonance includes a 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.

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

[0008] In combination with the first aspect, in certain implementations of the first aspect, 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.

[0009] According to the embodiments of the present application, there is a strong current on the floor towards the side of the first parasitic stub, which can better excite the first parasitic stub 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 towards the side of the first parasitic stub).

[0010] In combination with the first aspect, in certain implementations of the first aspect, 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.

[0011] According to the embodiments of the present application, the first radiator and the first parasitic stub can respectively generate strong radiation beams on both sides of the top (first direction) of the foldable electronic device 100. When the two beams approach, they can be combined into one radiation beam. Or, when the two beams are offset on both sides of the first direction, the bandwidth of the radiation beam can be broadened.

[0012] In combination with the first aspect, in certain implementations of the first aspect, based on the first feeding point being located on the first side of the virtual axis, the first connection point being located on the second side of the virtual axis, and the first electronic component having 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 resonance 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 resonance 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.

[0013] In combination with the first aspect, in some implementations of the first aspect, 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, and the first electronic component having a short - circuit characteristic, or, based on the resonance point frequency of the first resonance being greater than or equal to 3 GHz, the equivalent capacitance value of the first electronic component being greater than or equal to 0.5 pF, based on the resonance 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 being greater than or equal to 2 pF, based on the resonance 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 being greater than or equal to 3 pF.

[0014] According to the embodiments of the present application, the first electronic component can be determined according to the positions of the first feeding point and the first connection point, so that there is a strong current on the ground plane facing the first parasitic stub, which can better excite the first parasitic stub 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 on the left side of the first direction (the first direction faces the side of the first parasitic stub).

[0015] In combination with the first aspect, in some 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 embodiments of the present application, as the first feeding point moves towards one end of the first radiator, it is beneficial to realize the miniaturization of the first radiator.

[0017] In combination with the first aspect, in some implementations of the first aspect, the first radiator is used to generate the main resonance, the first parasitic stub is used to generate the first parasitic resonance, the first parasitic resonance is located within the resonance frequency band of the main resonance, and the main resonance and the first parasitic resonance together form the first resonance.

[0018] According to the embodiments of the present application, as the first connection point moves towards one end of the first radiator, it is beneficial to adjust the current distribution on the ground plane and can have a larger current adjustment range.

[0019] In combination with the first aspect, in some implementations of the first aspect, the antenna generates an efficiency pit at the first frequency point, and the frequency difference between the resonance point frequency of the first resonance and the first frequency point frequency is less than or equal to 50 MHz.

[0020] According to the embodiments of the present application, the coupling between the first radiator and the first parasitic stub is weak and cannot effectively excite the first parasitic resonance. Therefore, in the S-parameter graph, there is no obvious pit corresponding to the first parasitic resonance. However, due to partial current excitation of the first parasitic resonance, there will be an obvious pit in the efficiency curve (e.g., radiation efficiency or system efficiency). For example, if there is an efficiency pit 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 reduction in efficiency (e.g., radiation efficiency or system efficiency) caused by this pit does not exceed 1.5 dB. In one embodiment, the reduction in efficiency (e.g., radiation efficiency or system efficiency) caused by this pit does not exceed 1 dB.

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

[0022] According to the embodiments of the present application, the antenna has a wide beam width, enabling the foldable electronic device to have good communication characteristics within a range of a first angle (e.g., 60°) with respect to the first direction. For example, when the user conducts satellite communication, due to the wide-beam characteristic of the antenna, the radiation 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, and the user does not need to frequently change the holding posture of the foldable electronic device, effectively improving the user experience.

[0023] Combined with the first aspect, in some implementations of the first aspect, the first antenna further includes a second parasitic stub, and the second parasitic stub is a 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 floor.

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

[0025] Combined with the first aspect, in some implementations of the first aspect, the first end of the second parasitic stub and the first end of the first radiator are opposite and non-contact through the second insulating gap; the first antenna further includes a second electronic component, and the first end of the second parasitic stub includes a second connection point, and the second electronic component 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 stub and the first radiator, adjust the current flowing to the first parasitic stub, and thus adjust the intensity of the radiation generated by the first parasitic stub biased to the left side of the first direction (the first direction faces the side of the first parasitic stub).

[0027] In combination with the first aspect, in some implementation manners of the first aspect, the first frame further 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 further includes a third parasitic stub, the third parasitic stub is a conductive part of the first frame between the first position and the fifth position, at least part of the third parasitic stub is spaced apart from the floor, and the third parasitic stub 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 part of the first frame between the first position and the fifth position serves as the third parasitic stub. The third parasitic stub 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 some implementation manners of the first aspect, 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 floor at the sixth position, and the second frame opens a fourth insulating gap at the seventh position; the first antenna further includes a fourth parasitic stub, the fourth parasitic stub is a conductive part of the second frame between the sixth position and the seventh position, at least part of the fourth parasitic stub is spaced apart from the floor; 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.

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

[0031] In combination with the first aspect, in some implementation manners 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 stub includes a third connection point and a fourth connection point, the fourth parasitic stub opens a fifth insulating gap between the third connection point and the fourth connection point, and the third electronic component is coupled between the third connection point and the fourth connection point.

[0032] According to the embodiments of the present application, a fifth insulating gap is formed on the fourth parasitic stub. The fifth insulating gap can be regarded as an equivalent capacitor (e.g., distributed capacitor) provided on the fourth parasitic stub, and this equivalent capacitor can cause the fourth parasitic stub to form a metamaterial structure. The fourth parasitic stub with this metamaterial structure can increase the radiation aperture. After forming the fifth insulating gap, the electric field is more dispersed, and the dielectric loss near the conductor is reduced. Therefore, the system efficiency and radiation efficiency of the antenna can be effectively improved. By means of a second tuning circuit coupled 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 (e.g., the resonant frequency).

[0033] Combined with the first aspect, in some implementation manners 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 the embodiments 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 through a connecting member (e.g., a metal shrapnel), the distance from the fifth insulating gap can be understood as the minimum distance between the center of the part where the connecting member contacts the connection point and the conductors on both sides of the fifth insulating gap.

[0035] Combined with the first aspect, in some implementation manners of the first aspect, 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 forms a fourth insulating gap and a fifth insulating gap at the sixth position and the seventh position; the first antenna further includes a fourth parasitic stub, and the fourth parasitic stub is the conductive part of the second frame between the sixth position and the seventh position. At least a part 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.

[0036] According to the embodiments of the present application, both ends of the fourth parasitic stub are open ends, and a structure similar to a dipole antenna can be formed. In one embodiment, the fourth parasitic stub can operate in a half-wavelength mode.

[0037] Combined with the first aspect, in some implementation manners of the first aspect, based on the foldable electronic device being in the unfolded state, the sixth position is located between the first position and the seventh position.

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

[0039] Combined with the first aspect, in some implementation manners of the first aspect, 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 a conductive part of the second frame between the sixth position and the seventh position, the fifth parasitic stub is a 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 used to generate a second resonance, and the resonance frequency band of the second resonance includes the satellite communication frequency band.

[0040] According to an embodiment of the present application, the first antenna and the second antenna may both operate in the satellite communication frequency band. According to the above embodiment, both the first antenna and the second antenna have a wide beam characteristic. Therefore, the radiation 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] Combined with the first aspect, in some implementation manners of the first aspect, based on the foldable electronic device being in the folded state, the first radiator and the second radiator at least partially overlap in the 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.

[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 the radiator / parasitic stub, and the alignment of the gaps can improve the aesthetic degree of the foldable electronic device.

[0044] In combination with the first aspect, in some implementations of the first aspect, the ratio of the size of the floor along the extension direction of the first side when the foldable electronic device is in an unfolded state to that in a 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 some implementations of the first aspect, the foldable electronic device performs at least one of the following services in the satellite communication band: satellite short message receiving and / or sending, satellite call and / or answering, satellite data. Description of the Drawings

[0046] Figure 1 is a schematic structural diagram of the foldable electronic device 100 provided by the embodiments of the present application.

[0047] Figure 2 is a schematic structural diagram of the foldable electronic device 100 in an outer-fold state.

[0048] Figure 3 is a schematic structural diagram of the foldable electronic device 100 in a possible unfolded state.

[0049] Figure 4 is a schematic structural diagram of the foldable electronic device 100 in a possible folded state.

[0050] Figure 5 is a schematic structural diagram of the foldable electronic device 100 in a possible partially unfolded state.

[0051] Figure 6 is a schematic diagram of the structure of the common mode of an antenna provided by the present application and the corresponding current and electric field distributions.

[0052] Figure 7 is a schematic diagram of the structure of another antenna's differential mode provided by the present application and the corresponding current and electric field distributions.

[0053] Figure 8 is a schematic diagram of the maximum radiation direction of the radiation pattern generated by the antenna 200 in the foldable electronic device 100 provided by the embodiments of the present application.

[0054] Figure 9 It is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0055] Figure 10 It is a schematic diagram of the current distribution of the antenna 200 provided by an embodiment of the present application.

[0056] Figure 11 It is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0057] Figure 12 It is Figure 9 The S-parameter simulation result of the antenna 200 in the foldable electronic device 100 shown.

[0058] Figure 13 It is Figure 9 The system efficiency simulation result of the antenna 200 in the foldable electronic device 100 shown.

[0059] Figure 14 It is the radiation pattern of the antenna 200 when the first parasitic stub is not set and the foldable electronic device 100 is in the unfolded state.

[0060] Figure 15 It is the radiation pattern of the antenna 200 when the first parasitic stub is set and the foldable electronic device 100 is in the unfolded state.

[0061] Figure 16 It is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0062] Figure 17 It is Figure 16 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz.

[0063] Figure 18 It is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

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

[0065] Figure 20 It is Figure 18 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz.

[0066] Figure 21 It is Figure 18 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2.1 GHz.

[0067] Figure 22 Is Figure 18 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2.2 GHz.

[0068] Figure 23 Is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0069] Figure 24 Is Figure 23 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz.

[0070] Figure 25 Is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0071] Figure 26 Is Figure 25 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz.

[0072] Figure 27 Is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0073] Figure 28 Is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0074] Figure 29 Is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0075] Figure 30 Is Figure 29 The schematic diagram of the current distribution of the antenna 200 in the electronic device 100 shown.

[0076] Figure 31 Is Figure 29 The schematic diagram of the current distribution of the antenna 200 in the electronic device 100 shown.

[0077] Figure 32 Is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0078] Figure 33 Is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0079] Figure 34 Is Figure 32 The schematic diagram of the current distribution of the antenna 200 in the electronic device 100 shown.

[0080] Figure 35 Is Figure 32 The schematic diagram of the current distribution of the antenna 200 in the electronic device 100 shown. Detailed implementation manners

[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" used herein is merely a description of the same field of related objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally indicates that the related objects before and after are in an "or" relationship.

[0083] For the use of "within... range" in this application, unless it is separately stated that the end values are not included, it is default to include the two end values of this range. For example, within the range of 1 to 5, the two values of 1 and 5 are included.

[0084] Coupling: It can be understood as direct coupling and / or indirect coupling. "Coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as physical contact and electrical conduction of components; it can also be understood as a form of connection between different components in a circuit structure through physical lines such as copper foils or wires of a printed circuit board (PCB) that can transmit electrical signals; "indirect coupling" can be understood as electrical conduction of two conductors in a non-contact manner through space. In one embodiment, indirect coupling can also be called capacitive coupling. For example, signal transmission is achieved through the coupling between the gaps of two conductive parts to form an equivalent capacitance.

[0085] Element / device: Includes at least one of lumped elements / devices and distributed elements / devices.

[0086] Lumped element / device: Refers to the general term for all elements when the size of the element is much smaller than the wavelength corresponding to the operating frequency of the circuit. For a signal, at any moment, the characteristics of the element always remain fixed and are independent of frequency.

[0087] Distributed element / device: Different from lumped elements, when the size of the element is about the same as or larger than the wavelength corresponding to the operating frequency of the circuit, when a signal passes through the element, the characteristics of each point of the element itself will vary with the change of the signal. At this time, the element as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed element.

[0088] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to components with capacitive properties, such as capacitor elements; distributed capacitance (or distributed capacitor) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0089] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts.

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

[0091] The radiator may include a conductor with a specific shape and size, such as linear or sheet-like, etc. The present application does not limit the specific shape. In one embodiment, the linear radiator may be simply referred to as a wire antenna. In one embodiment, the linear radiator may be implemented by a conductive frame and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a support conductor and may also be referred to as a support antenna. In one embodiment, the wire diameter (e.g., including thickness and width) of the linear radiator, or the radiator of the wire antenna, is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of wire antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, inverted-F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding part from the feeding end of the radiating branch. For example, an inverted-F antenna (Inverted-F Antenna, IFA) can be regarded as obtained by adding a grounding path to a monopole antenna. The IFA antenna has a feeding point and a grounding point and is called an inverted-F antenna because its side view is in the shape of an inverted F. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted-F antenna (also known as PIFA, Planar Inverted 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 silver paste, etc. The shapes of the sheet radiator include circular, rectangular, annular, etc. 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 ground plane, where the dielectric substrate is disposed between the radiator and the ground plane.

[0092] The radiator may also include a groove or slit formed on a conductor. For example, a closed or semi-closed groove or slit is formed on a grounded conductor surface. In one embodiment, the slotted or slit radiator may be simply referred to as a slot antenna or a slotted antenna. In one embodiment, the radial dimension (e.g., including the width) of the groove or slit of the slot antenna / slotted 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 around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, the radiator with a closed groove or slit may be simply referred to as a closed slot antenna. In one embodiment, the radiator with a semi-closed groove or slit (e.g., adding an opening to a closed groove or slit) may be simply referred to as an open slot antenna. In some embodiments, the shape of the slit is elongated. In some embodiments, the length of the slit is about half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the slit is about an integer multiple of the wavelength (e.g., one dielectric wavelength). In some embodiments, the slit can be fed by a transmission line bridging one or both of its sides. Thus, a radio frequency electromagnetic field is excited on the slit and radiates electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slotted antenna can be realized by a conductive frame grounded at both ends, and can also be referred to as a frame antenna; in this embodiment, it can be considered that the slot antenna or slotted antenna includes a linear radiator, which is spaced from the floor and grounded at both ends of the radiator, thus forming a closed or semi-closed groove or slit. In one embodiment, the radiator of the slot antenna or slotted antenna can be realized by a support conductor grounded at both ends, and can also be referred to as a support antenna.

[0093] The feeding circuit is a combination of all circuits for receiving and transmitting radio frequency signals. The feeding circuit may include a transceiver and a radio frequency front-end circuit (RF front end). In some cases, "feeding circuit" is narrowly understood as a radio frequency integrated circuit (RFIC), and an RFIC can be considered to include a radio frequency front-end chip and a transceiver. The feeding 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 further include a test socket (or referred to as a radio frequency socket or radio frequency test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the radio frequency front-end circuit or the radiator of the antenna through the cable. The radio frequency front-end circuit can be considered as the circuit part coupled between the test socket and the transceiver.

[0095] In some embodiments, the radio frequency front-end circuit can be integrated into a radio frequency front-end chip in an electronic device, or the radio frequency front-end circuit and the transceiver can be integrated into a radio frequency 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, signals can be transmitted through a radio frequency channel in a transceiver (e.g., a port (pin) of a radio frequency chip); they can also share a radio frequency front-end circuit. For example, signals can be processed by a tuning circuit or an amplifier in a radio frequency front-end.

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

[0098] The matching circuit is a circuit for adjusting the radiation characteristics of the antenna. In one embodiment, the matching circuit is coupled between the feeding circuit and the corresponding radiator. In one embodiment, the matching circuit is coupled between the test socket and the radiator. Generally, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit can include a tuning circuit and / or electronic components. The tuning circuit can be an electronic component for switching the coupled connection of the radiator. The matching circuit has the functions of impedance matching and / or frequency tuning. Generally, it is considered to be a part of the antenna.

[0099] The grounding structure / feeding structure. The grounding structure / feeding structure can include connectors, such as metal shrapnel. The radiator is coupled to the ground plane through the grounding structure / and the feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure can include a transmission line / feeding wire, and the grounding structure can include a grounding wire.

[0100] Term / Point: The "Term / Point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator should not be narrowly understood as necessarily being an end point or end part physically disconnected from other radiators. It can also be considered as a certain point or a certain section on a continuous radiator. In one embodiment, the "Term / Point" can include the connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feeding end / feeding point can be the coupling area on the antenna radiator that is coupled to the feeding structure or feeding circuit (e.g., the area facing a part of the feeding circuit), and for another example, the grounding end / grounding point can be the connection / coupling area on the antenna radiator that is coupled to the grounding structure or grounding circuit. Open end / Closed end: In some embodiments, the open end and the closed end are, for example, defined relative to whether it is grounded. The closed end is grounded and the open end is not grounded. In some embodiments, the open end and the closed end are, for example, defined relative to other conductive bodies. The closed end is electrically connected to other conductive bodies and the open end is not electrically connected to other conductive bodies. In one embodiment, the open end can also be called a floating end, a free end, an open end, or an open-circuit end. In one embodiment, the closed end can also be called a grounding end or a short-circuit end. It should be understood that in some embodiments, other conductive bodies can be coupled through the open end to transfer coupled energy (which can be understood as transferring current).

[0101] In some embodiments, the understanding of the "closed end" can also be from the perspective of current distribution. The closed end or the grounding end, etc., can be understood as the point of large current on the radiator, or can also be understood as the point of small electric field on the radiator. In one embodiment, coupling electronic devices (such as capacitors, inductors, etc.) through the closed end can not change the current distribution characteristics of its point of large current / point of small electric field. In one embodiment, opening a slit (such as a slit filled with insulating material) at or near the closed end can not change the current distribution characteristics of its point of large current / point of small electric field.

[0102] In some embodiments, the understanding of the "open end" can also be from the perspective of current distribution. The open end or the floating end, etc., can be understood as the point of small current on the radiator, or can also be understood as the point of large electric field on the radiator. In one embodiment, coupling electronic devices (such as capacitors, inductors, etc.) through the open end can not change the current distribution characteristics of its point of small current / point of large electric field.

[0103] It should be understood that coupling an electronic device (such as a capacitor, an inductor, etc.) to the radiator end at a slit (from the perspective of the radiator structure, similar to the opening of an open end or a floating end) can make the radiator end at this slit a point of large current / point of small electric field. In this case, it should be understood that the radiator end at this slit is actually a closed end or a grounding end, etc.

[0104] The "floating radiator" mentioned in the embodiments of the present application refers to a radiator that is not directly connected to the feeder / feeding stub and / or the ground wire / grounding stub, but is fed and / or grounded through an indirect coupling method.

[0105] It should be understood that the "floating" in "floating end" and "floating radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the floating radiator can be, for example, a radiator disposed on the inner surface of an insulating rear cover.

[0106] The same / different directions of current mentioned in the embodiments of the present application should be understood as the directions of the main currents on the conductors on the same side being the same / different. For example, when exciting a current with the same distribution (e.g., the current path is also bent or circular) on a bent or circular conductor, it should be understood that, for example, although the main currents excited on the two sides of a circular conductor (e.g., the conductors around a gap, on the two sides of the gap) are opposite in direction, they still belong to the definition of a current with the same distribution in the embodiments of the present application. In one embodiment, the same direction of current on a conductor can mean that there is no reverse point in the current on the conductor. In one embodiment, the different direction of current on a conductor can mean that there is at least one reverse point in the current on the conductor. In one embodiment, the same direction of current on two conductors can mean that there is no reverse point in the currents on both conductors and they flow in the same direction. In one embodiment, the different direction of current on two conductors can mean that there is no reverse point in the currents on both conductors and they flow in opposite directions. The same / different directions of current on multiple conductors can be understood accordingly.

[0107] Resonance / resonant 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. The return loss characteristic of the center frequency can be less than -20 dB. It should be understood that unless otherwise specified, when the antenna / radiator mentioned in the present application generates "the first / second... resonance", the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or rather, the resonance with the lowest frequency generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to specific designs, and each antenna mode can correspondingly generate a fundamental mode resonance.

[0108] Resonant frequency band: The range of the resonant frequency is the resonant frequency band, and the return loss characteristic at any frequency point within the resonant frequency band can be less than -6 dB or -5 dB.

[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 supporting Band B40 has an operating frequency band including frequencies in the range of 2300 MHz to 2400 MHz, or in other words, the operating frequency band of this antenna includes Band B40. The frequency range that meets the index requirements can be regarded as the operating frequency band of the antenna.

[0110] The resonant frequency band and the operating frequency band can be the same or can partially overlap. In one embodiment, one or more resonant frequency bands of the antenna can cover one or more operating frequency bands of the antenna.

[0111] Electrical length: It can refer to the ratio of the 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]

[0113] where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0114] Wavelength: Or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink frequency band (resonant frequency from 1920 MHz to 1980 MHz) is 1955 MHz, then the operating wavelength can be the wavelength calculated using this frequency of 1955 MHz. Not limited to the center frequency, the "operating wavelength" can also refer to the wavelength corresponding to a non-center frequency of the resonant frequency or the operating frequency band.

[0115] It should be understood that the wavelength of the radiated signal in air can be calculated as follows: (air wavelength, or vacuum wavelength) = speed of light / frequency, where the frequency is the frequency of the radiated signal (MHz), and the speed of light can be taken as 3×10^8 m / s. The wavelength of the radiated signal in a medium can be calculated as follows: where ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application usually refers to the medium wavelength, which can be the medium wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink frequency band (resonant frequency from 1920 MHz to 1980 MHz) is 1955 MHz, then the wavelength can be the medium wavelength calculated using this frequency of 1955 MHz. Not limited to the center frequency, the "medium wavelength" can also refer to the medium wavelength corresponding to a non-center frequency of the resonant frequency or the operating frequency band. For ease of understanding, the medium wavelength mentioned in the embodiments of the present application can be simply calculated through the relative dielectric constant of the medium filled on one side or multiple sides of the radiator.

[0116] Antenna system efficiency (total efficiency): It refers to the ratio of the input power to the output power at the port of the antenna.

[0117] Antenna radiation efficiency: It refers to the ratio of the power radiated by the antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power, the ohmic loss power of the metal, and / or the dielectric loss power. The radiation efficiency is a value that measures the radiation ability of the antenna, and both metal loss and dielectric loss are factors affecting the radiation efficiency.

[0118] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between it and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna is characterized.

[0119] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmitted power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the smaller the radiation efficiency of the antenna.

[0120] The antenna return loss can be represented by the S11 parameter. S11 belongs to one of the S parameters. S11 represents the reflection coefficient, and this parameter can characterize the quality of the antenna transmission efficiency. The S11 parameter is usually negative. The smaller the S11 parameter, the smaller the antenna return loss, the smaller the energy reflected back by the antenna itself, that is, it means that the more energy actually enters the antenna, and the higher the system efficiency of the antenna; the larger the S11 parameter, the larger the antenna return loss, and the lower the system efficiency of the antenna.

[0121] It should be noted that in engineering, generally, the S11 value of -6 dB is used as the standard. When the S11 value of the antenna is less than -6 dB, it can be considered that the antenna can work normally, or it can be considered that the transmission efficiency of the antenna is good.

[0122] Antenna pattern: Also known as the radiation pattern. It refers to the graph of the relative field strength (normalized modulus value) of the antenna radiation field changing with direction at a certain distance (far field) from the antenna. Usually, it is represented by two mutually perpendicular plane patterns passing through the maximum radiation direction of the antenna.

[0123] The antenna pattern usually has multiple radiation beams. Among them, the radiation beam with the largest radiation intensity is called the main lobe, and the remaining radiation beams are called side lobes or minor lobes. Among the side lobes, the side lobe in the opposite direction to the main lobe is also called the back lobe.

[0124] Directivity: Also known as the directivity of the antenna. It refers to the ratio of the maximum power density to the average value on the antenna pattern at a certain distance (far field) from the antenna, which is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of the antenna. When the directivity coefficient is larger, it means that the proportion of the energy radiated by the antenna in a certain direction is more, and the energy radiation is more concentrated.

[0125] Antenna gain: Used to characterize the degree to which the antenna concentrates and radiates the input power. Generally, the narrower the main lobe and the smaller the side lobes of the antenna pattern, the higher the antenna gain.

[0126] Polarization direction of the antenna: At a given point in space, the electric field strength E (vector) is a function of time t. As time goes by, the end point of the vector periodically depicts a trajectory in space. If the trajectory is a straight line and perpendicular to the ground, it is called vertical polarization; if it is horizontal to the ground, it is called horizontal polarization. If the trajectory is an ellipse or a circle and rotates in the right-hand or clockwise direction when observed along the propagation direction as time passes, it is called right-hand circular polarization (RHCP); if it rotates in the left-hand or counterclockwise direction as time passes, it is called left-hand circular polarization (LHCP).

[0127] Ground (GND): It can generally refer to at least a part of any ground layer, ground plane, or ground metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of the above ground layers, ground planes, or ground components. "Ground" can be used for grounding components in an electronic device. In one embodiment, "ground" can be the ground layer of the circuit board of the electronic device, or the ground plane formed by the middle frame of the electronic device or the ground 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 - 14-layer board with 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric layers or insulating layers such as fiberglass, polymers, etc. In one embodiment, the circuit board includes a dielectric substrate, a ground layer, and a trace layer, and the trace layer and the ground layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on the circuit board or connected to the circuit board; or electrically connected to the trace layer and / or the ground layer in the circuit board. For example, a radio frequency source is arranged on the trace layer.

[0128] Any of the above-mentioned ground layers, or ground plates, or ground metal layers is made of a conductive material. In one embodiment, the conductive material can be any one of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate, and tin-plated copper, cloth impregnated with graphite powder, graphite-coated substrate, copper-plated substrate, brass-plated substrate, and aluminum-plated substrate. Those skilled in the art can understand that the ground layer / ground plate / ground metal layer can also be made of other conductive materials.

[0129] Grounding: It refers to achieving coupling with the above-mentioned ground / floor in any way. In one embodiment, grounding can be through physical grounding, for example, through some structural components of the middle frame to achieve physical grounding at specific positions on the frame (or called, physical ground). In one embodiment, grounding can be through device grounding, for example, through devices such as capacitors / inductors / resistors connected in series or in parallel for grounding (or called, device ground).

[0130] Next, the technical solutions of the embodiments of the present application will be described with reference to the accompanying drawings.

[0131] Figure 1 It is a schematic structural diagram of a foldable electronic device 100 provided by an embodiment of the present application. The foldable electronic device 100 can be an electronic device with a folding function such as a mobile phone, a tablet computer, an e-reader, a laptop computer, a wearable device such as a watch, etc. Figure 1 The illustrated embodiment is described by taking a foldable mobile phone as an example.

[0132] Refer to Figure 1 , the foldable electronic device 100 can include a flexible display screen 110, a first frame 121, a first cover 122, a second frame 123, a second cover 124, and a rotating shaft 125. In some embodiments, the first frame 121, the first cover 122, the second frame 123, and the second cover 124 can form a first housing 126 and a second housing 127 that support the flexible display screen 110. In other embodiments, at least one of the first cover 122 and the second cover 124 can include a display screen.

[0133] Figure 1The filled dot matrix pattern can schematically represent the flexible display screen 110. The flexible display screen 110 can be highly flexible and bendable, providing 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 flexible display (LCD), an organic light-emitting diode (OLED), an active matrix organic light emitting diode (AMOLED), a flexible light-emitting diode (FLED), a quantum dot light-emitting diode (QLED), etc. The embodiments of the present application do not limit this.

[0134] The flexible display screen 110 can 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 rotating shaft 125. The foldable display portion 113 can be connected between the first display portion 111 and the second display portion 112.

[0135] The first frame 121 can surround the outer periphery of the first cover 122, and at least part 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 and spaced apart from the first cover 122, and the first display portion 111 and the first cover 122 can be located on both sides of the first frame 121. The spaced space between the first display portion 111 and the first cover 122 can be used to arrange the components of the foldable electronic device 100, such as antennas, circuit board assemblies, etc.

[0136] The second frame 123 can surround the outer periphery of the second cover 124, and at least part 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 and spaced apart from the second cover 124, and the second display portion 112 and the second cover 124 can be located on both sides of the second frame 123. The spaced space between the second display portion 112 and the second cover 124 can be used to arrange the components of the foldable electronic device 100, such as antennas, circuit board assemblies, etc.

[0137] In an embodiment provided by the present application, the cover and the frame can be two parts of the housing of the foldable electronic device 100. The cover and the frame can be connected, and the form of this connection may not belong to assembly methods such as snap connection, adhesion, welding, riveting, clearance fit, etc. The connection relationship between the cover and the frame is usually difficult to be separated. In another embodiment provided by the present application, the cover and the frame can be two different components. By assembling the cover and the frame together, the housing of the foldable electronic device 100 can be formed.

[0138] The frame can at least partially serve as an antenna radiator to receive / transmit radio frequency signals. There can be a gap between this part of the frame serving as the radiator and other parts of the cover, so as to ensure that the antenna radiator has a good radiation environment. In one embodiment, the cover can be provided with a slit at this part of the frame serving as the radiator to facilitate the radiation of the antenna.

[0139] The antenna of the electronic device 100 can also be arranged inside the frame. When the frame of the electronic device 100 is made of a non-conductive material, the antenna radiator can be located inside the electronic device 100 and extend along the frame. For example, the antenna radiator is arranged 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 a better signal transmission effect. It should be noted that the antenna radiator being arranged close to the frame means that the antenna radiator can be arranged closely against the frame or close to the frame. For example, there can be a certain small gap between the antenna radiator and the frame.

[0140] The antenna of the electronic device 100 can also be arranged inside the housing, such as a stent antenna, a millimeter-wave antenna, etc. ( Figure 1 not shown in the figure). The clearance of the antenna arranged inside the housing can be obtained by a slit / hole on any one of the cover, and / or the frame, and / or the display screen, or by a non-conductive gap / aperture formed between any several of them. The setting of the clearance of the antenna can ensure the radiation performance of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive component in the electronic device 100, and the antenna radiates signals to the external space through this non-conductive area. In one embodiment, the form of the antenna can be an antenna form based on a flexible printed circuit (FPC), an antenna form based on laser-direct-structuring (LDS), or a microstrip disk antenna (MDA), etc. In one embodiment, the antenna can also adopt a transparent structure embedded inside the display screen of the electronic device 100, so that the antenna is a transparent antenna unit embedded inside the display screen of the electronic device 100.

[0141] The foldable electronic device 100 may also include a printed circuit board (PCB) (not shown in the figure). The PCB is disposed in a cavity formed by the cover body. Among them, the PCB can use a flame-retardant material (FR-4) dielectric board, or a Rogers dielectric board, or a hybrid dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code name for a flame-retardant material grade, and the Rogers dielectric board is a high-frequency board. Electronic components are carried on the PCB17, such as radio frequency chips, etc. In one embodiment, a metal layer may be provided on the printed circuit board PCB. This metal layer can be used for grounding the electronic components carried on the printed circuit board PCB, and can also be used for grounding other components, such as a bracket antenna, a frame antenna, etc. This metal layer can be called a floor, or a ground plane, or a ground layer. In one embodiment, this metal layer can be formed by etching metal on the surface of any layer of dielectric board in the PCB. In one embodiment, the metal layer for grounding can be provided on one side of the printed circuit board PCB close to the flexible display screen 110. In one embodiment, the edge of the PCB can be regarded as the edge of its ground layer. The electronic device 100 may also have other floors / ground planes / ground layers, as described above, and will not be elaborated here.

[0142] The rotating shaft 125 can be connected between the first housing 126 and the second housing 127. Under the action of the rotating shaft 125, the first housing 126 and the second housing 127 can approach or move away from each other. Correspondingly, the first display part 111 and the second display part 112 of the flexible display screen 110 can approach or move away from each other, so that the flexible display screen 110 can be folded or unfolded.

[0143] In one example, the rotating shaft 125 may include, for example, a main shaft, a first connection component, and a second connection component. The first connection component can be fixed to the first cover body 122, the second connection component can be fixed to the second cover body 124, and the first connection component and the second connection component can rotate relative to the main shaft. Through the mutual movement of the first connection component and the second connection component, the mutual movement of the first housing 126 and the second housing 127 can be driven, realizing the opening and closing function of the foldable electronic device 100.

[0144] Figure 1 The foldable electronic device 100 shown is currently in the unfolded state. In the unfolded state, the angle between the first housing 126 and the second housing 127 can be about 180°. The flexible display screen 110 can be in the unfolded state as shown in Figure 1 shown.

[0145] Figure 2 A possible folded state of the foldable electronic device 100 is shown. Among them, Figure 2Shows the outward folding state of the foldable electronic device 100 (the outward folding state can be simply referred to as the outward folding state). Figure 2 The shown outward folding state can be, for example, a left - right outward folding state or an up - down outward folding state. The following combines Figure 1 and Figure 2 to elaborate on a possible folding state of the foldable electronic device 100.

[0146] 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 reaches the maximum. At this time, the first cover body 122 and the second cover body 124 can be approximately parallel, spaced apart from each other, and arranged face - to - face, and the distance between the first cover body 122 and the second cover body 124 is the smallest. At least part of the first housing 126 and the second housing 127 is received in the space surrounded by the flexible display screen 110; the first display portion 111, the first housing 126, the second housing 127, and the second display portion 112 are stacked in sequence. Similarly, the first display portion 111 and the second display portion 112 can be approximately parallel and spaced apart from each other, and the distance between the first cover body 122 and the second cover body 124 is less than the distance between the first display portion 111 and the second display portion 112. At this time, the first display portion 111 and the second display portion 112 can be regarded as being on different planes.

[0147] Combining Figure 1 and Figure 2 When the foldable electronic device 100 is in the outward folding state, the first cover body 122 and the second cover body 124 can approach each other, and the first display portion 111 and the second display portion 112 can approach each other. The first display portion 111, the second display portion 112, and the foldable display portion 113 can form a housing area for accommodating the first cover body 122, the second cover body 124, and the rotating shaft 125. That is to say, the first cover body 122, the second cover body 124, and the rotating shaft 125 can be received in the spaced - apart space between the first display portion 111 and the second display portion 112.

[0148] It should be understood that the foldable electronic device 100 can be folded inward (the inward folding state can be simply referred to as the inward folding state). When the foldable electronic device 100 is in the inward folding state, the first cover body 122 and the second cover body 124 can approach each other, and the first display portion 111 and the second display portion 112 can approach each other. The first cover body 122, the second cover body 124, and the rotating shaft 125 can form a housing area for accommodating the first display portion 111, the second display portion 112, and the foldable display portion 113. That is to say, the first display portion 111, the second display portion 112, and the foldable display portion 113 can be received in the spaced - apart space between the first cover body 122 and the second cover body 124.

[0149] The foldable electronic device 100 can switch between a folded state and an unfolded state. When the foldable electronic device 100 is in the folded state, the occupied space of the foldable electronic device 100 is relatively small; when the foldable electronic device 100 is in the unfolded state, the foldable electronic device 100 can display a relatively large screen to increase the user's viewing range.

[0150] The foldable electronic device 100 may further include a third housing 128 and a rotating shaft 129, as Figure 3 shown. The rotating shaft 129 can be connected between the third housing 128 and the second housing 127. The third housing 128 and the second housing 127 can approach or move away from each other. As the number of foldable parts of the foldable electronic device 100 increases, with the screen size remaining the same in the unfolded state, the occupied space of the foldable electronic device 100 can be further reduced in the folded state.

[0151] In Figure 3 the foldable electronic device 100 shown, since it has three foldable parts (the first housing 126, the second housing 127, and the third housing 128), the foldable electronic device 100 has three forms: 1. Unfolded state; 2. Folded state; 3. Partially unfolded state.

[0152] 1. As Figure 3 shown, it is a possible unfolded state of the foldable electronic device 100. In the unfolded state, the angle between the first housing 126, the second housing 127, and the third housing 128 can be approximately 180°. The flexible display screen 110 can be in the unfolded state.

[0153] 2. As Figure 4 shown, it is a possible folded state (tri-fold state) of the foldable electronic device 100. In the folded state, the first housing 126 rotates along the rotating shaft 125 with the second housing 127, and the second housing 127 rotates along the rotating shaft 129 with the third housing 128, so that the bending degree of the foldable electronic device 100 reaches the maximum. At this time, the first housing 126, the second housing 127, and the third housing 128 can be regarded as being in different planes.

[0154] It should be understood that for the sake of brevity of discussion, in Figure 4In the structure shown, 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 housing 127 is located between the first housing 126 and the third housing 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 housing 128 is located between the first housing 126 and the second housing 127). The embodiments of the present application do not limit the folded state of the foldable electronic device 100.

[0155] 3. As Figure 5 shown, it is a possible partially unfolded state (two-fold state) of the foldable electronic device 100. In the partially unfolded state, the angle between the first housing 126 and the second housing 127 can be approximately 180°. The second housing 127 and the third housing 128 rotate along the rotation axis 129, so that the third housing 128 approaches the second housing 127. At this time, the first housing 126 and the second housing 127 are regarded as being in the same plane, and the second housing 127 and the third housing 128 can be regarded as being in different planes. In another possible partially unfolded state, the angle between the third housing 128 and the second housing 127 can be approximately 180°, and the first housing 126 and the second housing 127 rotate along the rotation axis 125, so that the first housing 126 approaches the second housing 127.

[0156] Figure 1 Only some components included in the electronic device 100 are schematically shown, and the actual shape, actual size, and actual structure of these components are not limited by Figure 1 limitation.

[0157] 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 regarded as the front surface, the surface where the back cover is located can be regarded as the back surface, and the surface where the frame is located can be regarded as the side surface.

[0158] It should be understood that in the embodiments of the present application, when it is considered that the user holds the electronic device (usually vertically and facing the screen), the orientation of the electronic device has a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when it is considered that the user holds the electronic device (usually vertically and facing the screen), the orientation of the electronic device has a top, a bottom, a left side, and a right side.

[0159] First, Figure 6 and Figure 7 are used to introduce two antenna modes involved in the present application. Among them, Figure 6 is a schematic diagram of the structure of a common mode of an antenna provided by the present application and the corresponding current and electric field distributions. Figure 7 is a schematic diagram of the structure of a differential mode of another antenna provided by the present application and the corresponding current and electric field distributions. Figure 6 andFigure 7 The two ends of the antenna radiator in are open, and its common-mode and differential-mode can be respectively referred to as line common-mode and line differential-mode.

[0160] It should be understood that the "common-differential mode" or "CM-DM mode" in this application refers to the line common-mode and line differential-mode generated on the same radiator.

[0161] 1. Line (Wire) Common Mode (CM)

[0162] Figure 6 In (a), it shows that the two ends of the radiator of antenna 40 are open, and a feeding circuit (not shown in the figure) is connected at the middle position 41. In one embodiment, the feeding form of antenna 40 adopts symmetrical feed. The feeding circuit can be connected to the middle position 41 of antenna 40 through the feeding wire 42. It should be understood that symmetrical feed can be understood as one end of the feeding circuit is connected to the radiator, and the other end is coupled to the ground through the floor. Among them, the connection point (feeding point) of the feeding circuit and the radiator 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 a region within a certain range near the above midpoint).

[0163] The middle position 41 of antenna 40 can be, for example, the geometric center of the antenna, or the midpoint of the electrical length of the radiator. For example, the connection point of the feeding wire 42 and antenna 40 covers the middle position 41.

[0164] Figure 6 In (b), it shows the current and electric field distributions of antenna 40. As Figure 6 shown in (b), the current shows a reverse distribution on both sides of the middle position 41, for example, a symmetrical distribution; the electric field shows a same-direction distribution on both sides of the middle position 41. As Figure 6 shown in (b), the current at the feeding wire 42 shows a same-direction distribution. Based on the same-direction distribution of the current at the feeding wire 42, Figure 6 the feeding shown in (a) can be called line CM feeding. Based on the reverse distribution of the current on both sides of the connection point of the radiator and the feeding wire 42, Figure 6 the antenna mode shown in (b) can be called line CM mode (also simply referred to as CM mode. For example, for a line antenna, the CM mode refers to the line CM mode). Figure 6 The current and electric field shown in (b) can be respectively called the current and electric field of the line CM mode.

[0165] The current is stronger at the middle position 41 of antenna 40 (the current maximum point is near the middle position 41 of antenna 40), and weaker at both ends of antenna 40. As Figure 6As shown in (b) thereof. The electric field is weaker at the middle position 41 of the antenna 40 and stronger at both ends of the antenna 40.

[0166] 2. Differential mode (DM)

[0167] As Figure 7 In (a) thereof, the left and right ends of the two radiators of the antenna 50 are open ends, and a feeding circuit is connected at the middle position 51. In one embodiment, the feeding form of the antenna 50 adopts anti-symmetrical feeding. One end of the feeding circuit is connected to one of the radiators through a feeding wire 52, and the other end of the feeding circuit is connected to the other radiator through the feeding wire 52. The middle position 51 can be the geometric center of the antenna 50, or the gap formed between the radiators.

[0168] It should be understood that the "central anti-symmetrical feeding" mentioned in this application can be understood as that the positive and negative poles of the feeding unit are respectively connected to two connection points near the above-mentioned midpoints of the radiators. In one embodiment, the signal amplitudes output by the positive and negative poles of the feeding unit are the same and the phases are opposite, for example, the phase difference is 180°±10°.

[0169] Figure 7 In (b) thereof, the current and electric field distributions of the antenna 50 are shown. As Figure 7 As shown in (b) thereof, the current shows a co-directional distribution on both sides of the middle position 51 of the antenna 50, for example, an anti-symmetrical distribution; the electric field shows an anti-directional distribution on both sides of the middle position 51. As Figure 7 As shown in (b) thereof, the current at the feeding wire 52 shows an anti-directional distribution. Based on the anti-directional current distribution at the feeding wire 52, Figure 7 The feeding shown in (a) thereof can be called line DM feeding. Based on the co-directional current distribution on both sides of the connection between the radiator and the feeding wire 52, Figure 7 The antenna mode shown in (b) thereof can be called the line DM mode (which can also be simply called the DM mode. For example, for a wire antenna, the DM mode refers to the line DM mode). Figure 7 The current and electric field shown in (b) thereof can be respectively called the current and electric field of the line DM mode. It should be understood that based on the co-directional current distribution on both sides of the connection between the radiator and the feeding wire 52, Figure 7 The antenna mode shown in (b) thereof can also be called the half-antenna mode, or the half-wavelength mode, or simply called the half mode.

[0170] In one embodiment, in the line DM mode, or the half mode, the current is stronger at the middle position 51 of the antenna 50 (the current maximum point is near the middle position 51 of the antenna 50) and weaker at both ends of the antenna 50. AsFigure 7 As shown in (b) of . The electric field is weaker at the middle position 51 of the antenna 50 and stronger at both ends of the linear antenna 50.

[0171] It should be understood that for the antenna radiator, it can be understood as a metal structural member that generates radiation, and the number thereof can be one piece, as Figure 6 shown, or it can also be two pieces, as Figure 7 shown, and can be adjusted according to actual design or production needs. For example, for the line CM mode, two radiators can also be used as Figure 7 shown. The two ends of the two radiators are arranged opposite to each other with a gap therebetween, and a symmetric 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 of the two radiators, and an effect similar to that of the antenna structure shown in Figure 6 can also be obtained. Correspondingly, for the line DM mode, one radiator can also be used as Figure 6 shown. Two feeding points are arranged at the middle position of the radiator and an anti-symmetric feeding method is adopted. For example, signals with the same amplitude and opposite phases are respectively fed into the two symmetric feeding points on the radiator, and an effect similar to that of the antenna structure shown in Figure 7 can also be obtained.

[0172] 3. Line CM - DM mode

[0173] The above Figure 6 and Figure 7 respectively show that when both ends of the radiator are open, different feeding methods are used to generate the line CM mode and the line DM mode respectively.

[0174] When the feeding form of the antenna adopts asymmetric feeding (the feeding point deviates from the middle position of the radiator, including edge feeding or off - center feeding), or the grounding point of the radiator (the coupling point with the floor) is asymmetric (the grounding point deviates from the middle position of the radiator), the antenna can simultaneously generate the first resonance and the second resonance, corresponding to the line CM mode and the line DM mode respectively. For example, the first resonance corresponds to the line CM mode, and the current and electric field distributions are as shown in (b) of Figure 6 . The second resonance corresponds to the line DM mode, and the current and electric field distributions are as shown in (b) of Figure 7 .

[0175] Figure 8 is a schematic diagram of the maximum radiation direction of the radiation pattern generated by the antenna 200 in the foldable electronic device 100 provided in the embodiment of the present application.

[0176] It should be understood that for the sake of simplicity of discussion, only the example in which the foldable device 100 only includes the first housing 201 and the second housing 202 is used for illustration. The first housing 201 and the second housing 202 can be rotatably connected to the rotating shaft 203.

[0177] As Figure 8 shown, 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 radiation pattern generated by the antenna 200, causing it to deviate from the top direction (e.g., the z direction) (e.g., deflect in the x direction).

[0178] When the user performs satellite communication, it is necessary to direct the maximum radiation direction of the antenna towards the satellite to achieve satellite pointing (establish a communication connection with the satellite). When the foldable electronic device 100 is in the unfolded state, the maximum radiation direction of the radiation pattern generated by the antenna 200 deviates from the top direction (e.g., the z direction) of the foldable electronic device 100. And, generally, the beam of the antenna 200 is narrow. For example, it can only have good communication performance within a range of 30° with respect to the top direction (e.g., the z direction).

[0179] Among them, the beam width can be understood as that within the range of an angle with respect to the top direction (e.g., the z direction) of the foldable electronic device 100 at a first angle, the gain of the radiation pattern generated by the antenna 200 is greater than or equal to a threshold value, and the first angle is the beam width.

[0180] When the beam width of the antenna 200 is narrow, since the maximum radiation direction of the radiation pattern generated by the antenna 200 deviates from the top direction (e.g., the z direction) of the foldable electronic device 100, the user needs to frequently change the posture of holding the foldable electronic device 100 to direct the maximum radiation direction of the radiation pattern generated by the antenna 200 towards the top direction (e.g., the z direction) of the foldable electronic device 100 to maintain the satellite pointing state. Otherwise, the communication quality deteriorates, which causes great inconvenience in use.

[0181] If the beam width of the antenna 200 is wide, the antenna 200 has a wide-beam characteristic and has good communication performance within a relatively large angle with respect to the top direction (e.g., the z direction). Then, when performing 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.

[0182] The embodiment of the present application provides a foldable electronic device, which includes an antenna. The antenna uses the conductive part of the frame of the foldable electronic device as the main radiator and parasitic branches, which can improve the user experience of satellite communication when the foldable electronic device is in the unfolded state.

[0183] Figure 9 is a schematic diagram of a foldable electronic device 100 provided by the embodiment of the present application.

[0184] As Figure 9As shown, the foldable electronic device 100 may include a first housing 201, a second housing 202, a rotating shaft 203, and a floor 300.

[0185] It should be understood that the floor 300 described in the embodiments of the present application has different sizes in different states of the foldable electronic device 100. In one embodiment, when the foldable electronic device 100 is in a folded state, the ratio of the length to the width of the floor 300 is greater than or equal to 1.6 and less than or equal to 2.5. Wherein, the width can be understood as the size of the floor 300 in the extending direction of the top edge (top side) or the bottom edge (bottom side) of the foldable electronic device 100. In one embodiment, when the foldable electronic device 100 is in an unfolded state, the length of the foldable electronic device 100 remains unchanged and the width increases, and the ratio of the length to the width of the floor 300 is greater than or equal to 0.8 and less than or equal to 1.5.

[0186] Wherein, the width and length of the floor 300 can be understood as the sizes of the equivalent floor formed by all metal layers or metal parts (such as the middle plate, the metal layer in the PCB, the metal layer in the display screen, etc.) that can be equivalent to the floor in the extending direction of the length and the extending direction of the width.

[0187] Wherein, the first housing 201 includes a first frame 210, and at least a part of the first frame 210 is spaced apart from the floor 300. The second housing 202 includes a second frame 220, and at least a part of the second frame 220 is spaced apart from the floor 300.

[0188] The rotating shaft 203 is located between the first housing 201 and the second housing 202, and the rotating shaft 203 is respectively rotatably connected to the first housing 201 and the second housing 202, so that the first housing 201 and the second housing 202 can rotate relative to each other. In one embodiment, the floor 300 may include a first part and a second part. The first part may be located inside the first housing 201, the second part may be located inside the second housing 202, and the first part and the second part may be connected by the rotating shaft 203.

[0189] It should be understandable that in Figure 9In the foldable electronic device 100 shown, the rotating shaft 203 is directly connected to the first housing 201 and the second housing 202 respectively, enabling the first housing 201 and the second housing 202 to rotate relative to each other. In addition, "the rotating shaft 203 is rotatably connected to the first housing 201 and the second housing 202 respectively" includes the following situation: the rotating shaft 203 can be rotatably connected to the first or second housing through one or more second rotating shafts and one or more intermediate housings. For example, in one embodiment, the foldable electronic device 100 may further include a first rotating shaft and a second rotating shaft, and one or more intermediate housings located between the first rotating shaft and the second rotating shaft. The first rotating shaft is located between the first housing 201 and the intermediate housing, and the first rotating shaft is rotatably connected to the first housing 201 and the intermediate housing respectively, enabling the first housing 201 and the intermediate housing to rotate relative to each other. The second rotating shaft is located between the intermediate housing and the second housing 202, and the rotating shaft 203 is rotatably connected to the intermediate housing and the second housing 202 respectively, enabling the intermediate housing and the second housing 202 to rotate relative to each other.

[0190] The first frame 210 includes a first position 211, a second position 212, a third position 213, and a fourth position 214 arranged in sequence. The first frame 210 defines a first insulating gap, a second insulating gap, and a third insulating gap at the first position 211, the second position 212, and the fourth position 214 respectively. The first frame 210 is coupled to the floor 300 at the third position 213.

[0191] Among them, 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 side or the bottom side of the foldable electronic device 100. For the sake of simplicity of discussion, in the embodiments of the present application, only the case where the first side 301 is the top side of the foldable electronic device 100 is taken as an example for illustration.

[0192] It should be understood that insulating gaps may be provided on the frame, and the conductor portions of the frame between two insulating gaps or between an insulating gap and a grounding point serve as radiators, 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 a non-metallic material (insulating material). And this gap is visible on the appearance surface. When the outer surface of the frame is a non-conductive material, the insulating gap can be understood as a gap separating the conductor portions inside the frame, and this gap may be filled with a non-metallic material (insulating material), or alternatively, it may not be filled with a non-metallic material and be filled with air. And this gap is not visible on the appearance surface.

[0193] In one embodiment, the width of the first insulating gap / second insulating gap / 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 in the embodiments of the present application, the widths of the gaps opened on the frame can all be within the above range.

[0194] 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 that 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.

[0195] 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.

[0196] Wherein, the first radiator 231 is the conductive part of the first frame 210 between the first position 211 and the second position 212. The first parasitic stub 241 is the conductive part of the first frame 210 between the third position 213 and the fourth position 214. In one embodiment, the first end and the second end of the first radiator 231 are open ends. The first end of the first parasitic stub 241 is a grounded end and the second end is an open end.

[0197] 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. Wherein, the first feeding point 251 and the first connection point 221 are respectively located on both sides of the virtual axis of the first radiator 231, and the lengths of the first radiator 231 on both sides of the virtual axis are the same.

[0198] It should be understood that both sides of the virtual axis described in the embodiments of the present application can be understood as both sides of the plane formed by the virtual axis and the thickness direction of the foldable electronic device 100 (for example, the direction perpendicular to the display screen in the unfolded state) (for example, the y direction). The first parasitic stub 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.

[0199] At the same time, due to the requirements in the production design, the edge of the first frame 210 facing the floor 300 (facing the inside of the foldable electronic device 100) is not flat. Therefore, in the embodiments of the application, the virtual axis of the first radiator 231 can be understood as a straight line perpendicular to the center of the first radiator 231.

[0200] The operating frequency band of the antenna 200 may include the satellite communication frequency band. When the foldable electronic device 100 is in the unfolded state, the first radiator 231 is used to generate a first resonance, and the resonance frequency band of the first resonance includes the satellite communication frequency band. Satellite communication includes at least one of the following communication services: satellite sending and / or receiving short messages (also known as short text messages), satellite calling and / or answering calls, and satellite data (such as Internet access).

[0201] In one embodiment, the satellite communication frequency band may include some frequency bands in the Tiantong satellite system, and may include the transmitting frequency band (1980 MHz - 2010 MHz) and the receiving frequency band (2170 MHz - 2200 MHz) in the Tiantong satellite system. In one embodiment, the satellite communication frequency band may include some frequency bands in the Beidou satellite system, and may include the transmitting frequency band (1610 MHz - 1626.5 MHz) and the receiving frequency band (2483.5 MHz - 2500 MHz) in the Beidou satellite system. In one embodiment, the satellite communication frequency band may include some frequency bands in the low-earth orbit satellite system, and may include the transmitting frequency band (2500 MHz - 2520 MHz) and the receiving frequency band (2670 MHz - 2690 MHz) in the low-earth orbit satellite system. Alternatively, it may also be applied to other satellite communication systems, and the embodiments of the present application do not limit this.

[0202] In one embodiment, when the antenna 200 operates in the Tiantong satellite system (the operating frequency band of the antenna 200 includes at least some frequency bands in the Tiantong satellite system), the foldable electronic device 100 can perform voice communication through the antenna 200. In one embodiment, when the antenna 200 operates in the Beidou satellite system (the operating frequency band of the antenna 200 includes at least some frequency bands in the Beidou satellite system), the foldable electronic device 100 can send or receive short text messages and pictures through the antenna 200.

[0203] The first radiator 231, the first parasitic stub 241, and the first electronic component 261 are used to generate the radiation 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.

[0204] According to an embodiment of the present application, when the foldable electronic device 100 is in the unfolded state, since the first parasitic stub 241 is disposed on the second side 302, the direction of the radiation generated by the first parasitic stub 241 is biased to the left of the first direction (the first direction faces the side of the first parasitic stub 241). Among them, the first electronic component 261 can enhance the radiation generated by the first parasitic stub 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, it is the z direction. And when the foldable electronic device 100 is in the unfolded state, since the radiation direction generated by the first radiator 231 is biased to the right of the first direction (the first direction faces the side of the rotating shaft 203). The first radiator 231 and the first parasitic stub 241 can respectively generate strong radiation on both sides of the top (the first direction) of the foldable electronic device 100, which can make the antenna 200 have the characteristic of a wide beam.

[0205] 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 stub 241 is used to generate a first parasitic resonance. The main resonance and the first parasitic resonance together form the above-mentioned first resonance (since the resonance points of the first parasitic resonance and the main resonance have a small frequency difference, in the S-parameter diagram, the main resonance and the first parasitic resonance are fused 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.

[0206] At the same time, in the implementation of the present application, the coupling between the first radiator 231 and the first parasitic stub 241 is weak and cannot effectively excite the first parasitic resonance. Therefore, in the S-parameter diagram, there is no obvious pit corresponding to the first parasitic resonance. And because there is partial current excitation in the first parasitic resonance, there will be an obvious pit in the efficiency curve (for example, radiation efficiency or system efficiency). For example, if there is an efficiency pit 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) drop caused by this pit does not exceed 1.5 dB. In one embodiment, the efficiency (for example, radiation efficiency or system efficiency) drop caused by this pit does not exceed 1 dB.

[0207] Among them, when the foldable electronic device 100 is in the unfolded state, since the first parasitic stub 241 is disposed on the second side 302, the maximum radiation direction of the radiation pattern generated by the first parasitic resonance is biased towards the first side (the first side is the side where the virtual axis of the first radiator 231 is close to the first parasitic stub 241). When the foldable electronic device 100 is in the unfolded state, since the main resonance is affected by the current on the ground plane 300, the maximum radiation direction of the radiation pattern generated by the main resonance is biased towards the second side (the second side is the side where the virtual axis of the first radiator 231 is away from the first parasitic stub 241). Since the first parasitic resonance and the main resonance can generate radiation on both sides of the top of the foldable electronic device 100 respectively, the antenna 200 can have the characteristic of a wide beam. In one embodiment, when the first parasitic resonance and the main resonance can generate strong radiation beams on both sides of the top (the 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. Or, when the two beams are offset on both sides of the first direction, the bandwidth of the radiation beam can be broadened.

[0208] The wide beam characteristic can be understood as that the antenna 200 has a relatively wide beam width, so that the foldable electronic device 100 has good communication characteristics within a range of a first angle (for example, 50°) with respect to the first direction. For example, when the user performs satellite communication, the antenna 200 has the characteristic of a wide beam, and the radiation 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, and the user does not need to frequently change the holding posture of the foldable electronic device 100, effectively improving the user experience.

[0209] In one embodiment, within an angle range of 50° with respect to the first direction (for example, the z direction), the gain is greater than or equal to -6 dBic. In one embodiment, within an angle range of 60° with respect to the direction pointing to the top of the foldable electronic device 100 (for example, the z direction), the gain is greater than or equal to -6 dBic.

[0210] At the same time, the main resonance is generated by the line DM mode described in the above embodiment. Since the current generated by the line DM mode is mainly generated by the first radiator 231, the current is mainly concentrated on the first radiator 231, and multiple current modes will not be generated on the ground plane 300, and it is easy to determine the maximum radiation direction of the radiation pattern generated by the antenna 200.

[0211] Moreover, for the line CM mode, the transverse mode of the ground plane can be excited (the proportion exceeds the longitudinal mode), but the currents corresponding to the transverse modes on the ground plane will cancel each other out. Therefore, the system efficiency and radiation efficiency of the line CM mode are relatively low. For the line DM mode, the radiation of the antenna in the line DM mode is mainly generated by the radiator, and the system efficiency and radiation efficiency of the line DM mode are better than those of the line CM mode.

[0212] 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 on which 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 floor 300 (the side on which the virtual axis of the first radiator 231 is away from the first parasitic branch 241).

[0213] 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 on which 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 on which the virtual axis of the first radiator 231 is away from the first parasitic branch 241).

[0214] It should be understood that a stronger current is present on the floor on the side facing the first parasitic branch 241, which can better excite 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 facing the side of the first parasitic branch 241).

[0215] Meanwhile, the current on the floor 300 described in the embodiment of the present application may 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.

[0216] 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 is open circuit or the equivalent inductance is greater than or equal to 5 nH, the current on the first side of the floor 300 is greater than the current on the second side of the floor 300. Figure 10 As shown in (a) in .

[0217] In one embodiment, the equivalent inductance 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 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.

[0218] In one embodiment, the first feeding point 251 is located on the first side of the virtual axis of the first radiator 231, and the first connection point 221 is located on the second side of the virtual axis of the first radiator 231. When the first electronic component exhibits a short-circuit characteristic or an equivalent capacitance greater than or equal to 0.5 pF, the current on the first side of the ground plane 300 is less than that on the second side of the ground plane 300, as shown in (b) of Figure 10 as shown.

[0219] 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.

[0220] Wherein, the first electronic component exhibiting an open-circuit / short-circuit characteristic can be understood as an open-circuit / short-circuit between the first connection point 221 and the ground plane 300. For example, the first electronic component is a switch, the common port of the switch is coupled to the first connection point 221, and the connection port is coupled to the ground plane 300. When the common port and the connection port of the switch are not electrically connected, it exhibits an open-circuit characteristic. When the common port and the connection port of the switch are electrically connected, it exhibits a short-circuit characteristic.

[0221] Meanwhile, 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 exhibits different capacitance / inductance characteristics. The embodiments of the present application do not limit this.

[0222] In one embodiment, when the first feeding point 251 is located on the first side of the virtual axis of the first radiator 231, the first connection point 221 is located on the second side of the virtual axis of the first radiator 231, and the first electronic component exhibits an open-circuit characteristic or an equivalent inductance greater than or equal to 5 nH. In one embodiment, when the first connection point 221 is located on the first side of the virtual axis of the first radiator 231, the first feeding point 251 is located on the second side of the virtual axis of the first radiator 231, and the first electronic component exhibits a short-circuit characteristic or an equivalent capacitance greater than or equal to 0.5 pF.

[0223] It should be understood that with reference to the above settings, when the antenna 200 generates the first resonance (for the foldable electronic device 100 to perform satellite communication), a stronger current can be generated on the ground plane facing the first parasitic stub 241, better exciting the first parasitic stub 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.

[0224] 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 Figure 11 shown. The grounding point 204 is located between the first feeding 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 lengths of the first radiator 231 on both sides of the center are the same. The central region of the first radiator 231 can be understood as the region within 5 mm from the center of the first radiator 231.

[0225] It should be understood that the grounding point 204 can facilitate the reuse of the conductive part 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 parts of the first frame 210 between the first position 211 and the grounding point 204, and the conductive parts of the first frame 210 between the second position 212 and the grounding point 204 can be used as radiators of different antennas respectively to expand the operating frequency band of the foldable electronic device 100.

[0226] In one embodiment, grounding can be achieved through a grounding member at the grounding point 204. The width of the grounding member connected to the first frame 210 is greater than or equal to 1 mm and less than or equal to 8 mm.

[0227] It should be understood that the grounding point and / or the connection point can be implemented through a metal shrapnel or a connecting rib structure between the middle plate of the middle frame. The embodiments of the present application do not limit this.

[0228] 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 in the above embodiment, the characteristics of the first electronic component 261 need to be adjusted. 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 there is a strong current on the floor facing the first parasitic stub 241, better exciting the first parasitic stub 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.

[0229] In one embodiment, the distance (the length of the first radiator 231) between the first feeding point 251 and the adjacent end of the first radiator 231 (e.g., the second position 212) 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.

[0230] In one embodiment, the distance (the length of the first radiator 231) between the first connection point 221 and the adjacent end of the first radiator 231 (e.g., the first position 211) 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.

[0231] It should be understood that as the first feeding point 251 moves towards one end of the first radiator 231, it is beneficial to realize the miniaturization of the first radiator 231. And as the first connection point 221 moves towards one end of the first radiator 231, it is beneficial to adjust the current distribution on the ground plane 300, and a larger current adjustment range can be achieved.

[0232] In one embodiment, the distance between the first radiator 231 and the first parasitic stub 241 can be greater than or 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 band).

[0233] Correspondingly, the first radiator 231 can operate in the half-wavelength mode, and the distance between the first radiator 231 and the first parasitic stub 241 can be greater than or 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.

[0234] 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 characteristic of the antenna 200 is improved better. 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.

[0235] 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%.

[0236] Figure 12 and Figure 13 is Figure 9 the simulation result of the foldable electronic device 100 shown in the unfolded state. Among them, Figure 12 is Figure 9 the S-parameter simulation result of the antenna 200 in the foldable electronic device 100 shown. Figure 13 is Figure 9 the system efficiency simulation result of the antenna 200 in the foldable electronic device 100 shown.

[0237] As Figure 12 shown, the antenna can generate resonance near 2 GHz, which can correspond to the first resonance described in the above embodiments.

[0238] As Figure 13 shown, the antenna has good radiation efficiency and system efficiency near 2 GHz. And, a pit is generated near 2 GHz, which can correspond to the first parasitic resonance in the above embodiments.

[0239] It should be understood that if the antenna only generates a main resonance near 2 GHz by the first radiator, the curve of the radiation efficiency is a smooth curve, while Figure 13 the curve of the radiation efficiency shown

[0240] Figure 14 and Figure 15 is Figure 9 the radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz. Among them, Figure 14 is the radiation pattern of the antenna 200 when the first parasitic stub is not set and the foldable electronic device 100 is in the unfolded state. Figure 15 is the radiation pattern of the antenna 200 when the first parasitic stub is set and the foldable electronic device 100 is in the unfolded state.

[0241] It should be understood that in the radiation pattern shown in the embodiments of the present application, the vertical axis is the angle Theta (θ) formed with the z direction (the direction pointing to the top of the foldable electronic device 100), and the horizontal axis is the angle formed with the x direction (the extending direction of the first side) (the angle formed with the x axis in the xoy plane).

[0242] Wherein, the z - direction (Theta = 0°, Phi = 180°) is the first direction pointing from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100, and is oriented towards the satellite during satellite communication. When the radiation pattern of the antenna meets the gain requirement (e.g., - 5.5 dBic), the larger the angle formed with the z - direction, the better the wide - beam characteristic of the antenna. When the satellite moves within this angular range, the foldable electronic device 100 can still have good communication characteristics without moving.

[0243] As Figure 14 shown, without the first parasitic stub being provided, when the foldable electronic device is in the unfolded state, the current on the ground plane will affect the maximum radiation direction of the radiation pattern generated by the antenna 200, causing the maximum radiation direction to deviate from the top direction. For example, the maximum radiation direction shifts to the right side of the first direction (Phi ≤ 180°). The radiation pattern generated by the antenna has pits near Theta = 75° / 275°. Taking the gain being greater than or equal to - 5.5 dBic as the boundary, the antenna 200 only meets the communication requirements within Theta ≤ 38°.

[0244] As Figure 15 shown, with the first parasitic stub being provided, when the foldable electronic device is in the unfolded state, the first parasitic resonance generated by the first parasitic stub 241 can generate radiation towards the left side of the first direction (Phi ≥ 180°), which can combine with the radiation towards the right side of the first direction (Phi ≤ 180°) generated by the first radiator 231 and affected by the current on the ground plane, making the radiation pattern no longer have pits. Taking the gain being greater than or equal to - 5.5 dBic as the boundary, the antenna 200 meets the communication requirements within Theta ≤ 60°, and the antenna 200 has the characteristic of a wide beam.

[0245] Figure 16 is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0246] As Figure 16 shown, the antenna 200 may further include a second parasitic stub 242. The second parasitic stub 242 is the conductive part of the first frame 210 between the second position 212 and the third position 213. At least part of the second parasitic stub 242 is spaced apart from the ground plane 300. In one embodiment, the first end of the second parasitic stub 242 is an open end and the second end is a grounded end.

[0247] It should be understood that Figure 16 the antenna 200 shown in Figure 9 differs from the antenna 200 shown in Figure 9In the antenna 200 shown, both ends of the conductive part between the second position 212 and the third position 213 are grounded ends, and resonance cannot be generated by the energy coupled by the first radiator 231. And in Figure 16 In the antenna 200 shown, one end of the conductive part of the first frame 210 between the second position 212 and the third position 213 close to the first radiator 231 is an open end and can be used 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 the current flowing to the first parasitic stub 241, enhance the radiation characteristics of the first parasitic stub 241, and adjust the intensity of the radiation generated by the first parasitic stub 241 biased to the left side of the first direction, thereby adjusting the wide-beam characteristics of the antenna 200.

[0248] In one embodiment, the first end of the second parasitic stub 242 and the first end of the first radiator 231 are opposite and non-contact through the second insulating gap. The first end of the second parasitic stub 242 may further include a second connection point 222. The antenna 200 may further include a second electronic component 262. The second electronic component 262 is coupled and connected between the second connection point 222 and the ground plane 300.

[0249] It should be understood that the second electronic component 262 can be used to adjust the coupling amount between the second parasitic stub 242 and the first radiator 231, adjust the current flowing to the first parasitic stub 241, and thus adjust the intensity of the radiation generated by the first parasitic stub 241 biased to the left side of the first direction (the first direction faces the side of the first parasitic stub 241).

[0250] In one embodiment, the second parasitic stub 242 can be used to generate a second parasitic resonance. The resonance point frequency of the second parasitic resonance is greater than the resonance point frequency of the first resonance. In one embodiment, the frequency difference between the resonance point frequency of the second parasitic resonance and the resonance point frequency of the first resonance is greater than or equal to 200 MHz.

[0251] 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, it will cause a depression in the radiation efficiency within the resonance frequency band of the first resonance and reduce the radiation characteristics of the antenna 200.

[0252] 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%.

[0253] For the sake of brevity of discussion, Figure 16 the antenna 200 shown and Figure 9Similar parts of the antenna 200 shown are not described one by one. For example, the similar parts include: the position of the first radiator 231, the position of the first parasitic stub 241, and the relative position between the first radiator 231 and the first parasitic stub 241; the frequency band of satellite communication; the first radiator 231 and the first parasitic stub 241 jointly generate a first resonance; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0254] Figure 17 is Figure 16 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz.

[0255] Among them, the z direction (Theta = 0°, Phi = 180°) is the first direction pointing from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100.

[0256] As Figure 17 shown, compared with Figure 15 the simulation result of the case where the second parasitic stub is not provided as shown, by setting the second parasitic stub, in the unfolded state of the foldable electronic device, the second parasitic stub 242 enhances the radiation characteristics of the first parasitic stub 241, making the radiation generated by the first parasitic stub 241 deviate to the left side of the first direction (for example, Figure 17 in the radiation pattern shown, the intensity in the region where 180° ≤ Phi ≤ 360°) increases.

[0257] It should be understood that the second electronic component can be used to adjust the coupling amount between the second parasitic stub and the first radiator, adjust the current flowing to the first parasitic stub, and change the intensity of the radiation generated by the first parasitic stub deviating to the left side of the first direction, so as to determine the wide beam characteristic of the antenna 200.

[0258] Figure 18 It is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0259] As Figure 18 shown, 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 and connected to the floor 300 at the fifth position 215.

[0260] The antenna 200 may further include a third parasitic stub 243. The third parasitic stub 243 is a conductive part of the first frame 210 between the first position 211 and the fifth position 215. At least part of the third parasitic stub 243 is spaced apart from the floor 300. In one embodiment, the first end of the third parasitic stub 243 is a grounded end and the second end is an open end.

[0261] The third parasitic stub 243 is used to generate a third parasitic resonance, and the first resonance and the third parasitic resonance jointly support the satellite communication frequency band. In one embodiment, the resonance frequency band of the first resonance may include the transmission frequency band in satellite communication, and the resonance frequency band of the third parasitic resonance may include the reception frequency band in satellite communication.

[0262] It should be understood that Figure 18 the shown antenna 200 and Figure 9 the shown antenna 200 only differ in the third parasitic stub 243. In Figure 9 the shown antenna 200, the third parasitic stub 243 is not provided, and the first resonance is only generated jointly by the first radiator 231 and the first parasitic stub. While in Figure 18 the shown antenna 200, the conductive part 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 to expand the operating frequency band of the antenna 200.

[0263] 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%.

[0264] For the sake of simplicity of discussion, Figure 18 the similar parts of the shown antenna 200 and Figure 9 , Figure 16 the shown antenna 200 will not be described in detail one by one. For example, the similar parts include: the position of the first radiator 231, the position of the first parasitic stub 241, and the relative position between the first radiator 231 and the first parasitic stub 241; the frequency band of satellite communication; the first resonance generated jointly by the first radiator 231 and the first parasitic stub 241; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0265] Figure 19 is Figure 18 the S-parameter simulation result of the antenna 200 of the foldable electronic device 100 in the unfolded state shown.

[0266] As Figure 19 shown, the antenna can generate resonances near 2 GHz and near 2.4 GHz.

[0267] Among them, the resonance generated near 2 GHz can correspond to the first resonance described in the above embodiment, and the resonance generated near 2.4 GHz can correspond to the third parasitic resonance described in the above embodiment.

[0268] Figures 20 to 22 is Figure 18 The radiation pattern of the antenna 200 when the foldable electronic device 100 shown is in the unfolded state. Among them, Figure 20 is Figure 18 The radiation pattern of the antenna 200 at 2 GHz in the foldable electronic device 100 shown. Figure 21 is Figure 18 The radiation pattern of the antenna 200 at 2.1 GHz in the foldable electronic device 100 shown. Figure 22 is Figure 18 The radiation pattern of the antenna 200 at 2.2 GHz in the foldable electronic device 100 shown.

[0269] Among them, the z - direction (Theta = 0°, Phi = 180°) is the first direction pointing from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100.

[0270] As Figures 20 to 22 shown, when the foldable electronic device is in the unfolded state, with the gain greater than or equal to - 6 dBic as the boundary, the antenna 200 meets the communication requirements within Theta within 60°, and the antenna 200 has the characteristic of a wide beam.

[0271] It should be understood that the first parasitic resonance generated by the first parasitic stub 241 is near the first resonance (near 2 GHz), but at 2.1 GHz and 2.2 GHz, it can also generate radiation towards the left side (Phi≥180°) of the first direction, making the radiation pattern no longer have a pit, so that the antenna 200 has the characteristic of a wide beam in a relatively wide frequency band.

[0272] Figure 23 is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0273] As Figure 23 shown, 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 and connected to the floor 300 at the sixth position 216. The second frame 220 opens 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 are the top side or the bottom side of the foldable electronic device 100.

[0274] It should be understood that for the sake of simplicity of discussion, in the embodiment of the present application, only the case where the first side 301 and the third side 303 are the top side of the foldable electronic device 100 is taken as an example for illustration.

[0275] In one embodiment, when the foldable electronic device 100 is in the unfolded state, the sixth position 216 is located between the first position 211 and the seventh position 217.

[0276] It should be understood that, for the sake of simplicity of discussion, in the embodiments of the present application, only the example where the sixth position 216 is located between the first position 211 and the seventh position 217 is taken for illustration. In actual production or design, the seventh position 217 is located between the first position 211 and the sixth position 216.

[0277] The antenna 200 may further include a fourth parasitic stub 244. The fourth parasitic stub 244 is a conductive part of the second frame 220 between the sixth position 216 and the seventh position 217. At least part of the fourth parasitic stub 244 is spaced apart from the ground plane 300. In one embodiment, the first end of the fourth parasitic stub 244 is a grounded end and the second end is an open end.

[0278] It should be understood, Figure 23 the shown antenna 200 and Figure 9 the shown antenna 200 of Figure 9 only differ in the fourth parasitic stub 244. In Figure 23 the shown antenna 200, no parasitic stub is provided on the second frame 220 of the second housing 202. While in Figure 23 the shown antenna 200, the conductive part of the second frame 220 between the sixth position 216 and the seventh position 217 serves as the fourth parasitic stub 244. When the foldable electronic device 100 is in the unfolded state, the fourth parasitic stub 244 is used to reduce the influence of the current on the ground plane 300 on the main resonance of the first radiator 231, thereby adjusting the intensity of the radiation generated by the main resonance biased towards the right side of the first direction (the first direction faces the side of the rotating shaft 203).

[0279] In one embodiment, the fourth parasitic stub 244 may be used to generate a fourth parasitic resonance.

[0280] It should be understood that when the fourth parasitic resonance is close to the first resonance, the intensity of the radiation generated by the main resonance biased towards the right side of the first direction (the first direction faces the side of the rotating shaft 203) decreases. By adjusting the frequency difference between the fourth parasitic resonance and the first resonance, the antenna 200 can have different characteristics in the radiation pattern generated on the right side of the first direction (the first direction faces the side of the rotating shaft 203), so as to flexibly adjust the intensity of the radiation pattern on the right side of the first direction (the first direction faces the side of the rotating shaft 203) and achieve the wide-beam characteristic of the antenna 200.

[0281] For the sake of simplicity of discussion, Figure 23 the shown antenna 200 and Figure 9 、 Figure 16 、 Figure 18Parts similar to the antenna 200 shown will not be elaborated one by one. For example, the similar parts include: the position of the first radiator 231, the position of the first parasitic stub 241, and the relative position between the first radiator 231 and the first parasitic stub 241; the frequency band of satellite communication; the first radiator 231 and the first parasitic stub 241 jointly generate the first resonance; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0282] Figure 24 is Figure 23 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz.

[0283] Wherein, the z-direction (Theta = 0°, Phi = 180°) is the first direction from the bottom of the foldable electronic device 100 to the top of the foldable electronic device 100.

[0284] As Figure 24 shown, a fourth parasitic stub 244 is provided. When the foldable electronic device is in the unfolded state, the fourth parasitic stub 244 can suppress the current (transverse traveling wave) on the floor on one side of the second housing, 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 shift significantly to the right side of the first direction (for example, Figure 24 the region of 0° ≤ Phi ≤ 180° in the radiation pattern shown).

[0285] Since the radiation generated by the main resonance will not shift significantly to the right side of the first direction, when the foldable electronic device is in the unfolded state, the radiation intensity of the antenna 200 on the right side of the first direction (for example, Figure 24 the region of 180° ≤ Phi ≤ 360° in the radiation pattern shown) increases. Therefore, the radiation characteristics of the antenna 200 on the right side of the first direction (the side of the first direction facing the rotating shaft 203) can be adjusted through the fourth parasitic stub 244, so that the antenna 200 has a wide beam characteristic.

[0286] The second parasitic stub 242 enhances the radiation characteristics of the first parasitic stub 241, so that the radiation generated by the first parasitic stub 241 is biased towards the left side of the first direction (for example, Figure 24 the intensity in the region of 180° ≤ Phi ≤ 360° in the radiation pattern shown) increases.

[0287] It should be understood that the second electronic component can be used to adjust the coupling amount between the second parasitic stub and the first radiator, adjust the current flowing to the first parasitic stub, and change the intensity of the radiation generated by the first parasitic stub biased towards the left side of the first direction, so as to determine the wide beam characteristic of the antenna 200.

[0288] Figure 25It is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0289] As Figure 25 shown, the antenna 200 further includes a third electronic component 263. The fourth parasitic stub 244 includes a third connection point 223 and a fourth connection point 224. The third electronic component 263 is coupled between the third connection point 223 and the fourth connection point 224. The fourth parasitic stub 244 has a fifth insulating gap between the third connection point 223 and the fourth connection point 224.

[0290] It should be understood that by opening the fifth insulating gap on the fourth parasitic stub 244, the fifth insulating gap can be regarded as an equivalent capacitance (e.g., distributed capacitance) provided on the fourth parasitic stub 244. This equivalent capacitance can enable the fourth parasitic stub 244 to form a metamaterial structure. The fourth parasitic stub 244 with this metamaterial structure can increase the radiation aperture. After opening the fifth insulating gap, the electric field is more dispersed, and the dielectric loss near the conductor is reduced. Therefore, the system efficiency and radiation efficiency of the antenna 200 can be effectively improved. By the third electronic component 263 coupled 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 (e.g., the resonant point frequency of the fourth parasitic resonance generated by the fourth parasitic stub 244).

[0291] It should be understood that Figure 25 the antenna 200 shown in Figure 23 differs from the antenna 200 shown in Figure 23 only in that a fifth insulating gap is opened between the third connection point 223 and the fourth connection point 224 and the third electronic component 263 is connected in series. In the antenna 200 shown in Figure 25 the fourth parasitic stub 244 is a structure similar to an IFA with one end being the ground end and the other end being the open end, and the fourth parasitic stub 244 all operates in the quarter-wavelength mode. While in the antenna 200 shown in Figure 23 the fourth parasitic stub 244 forms a metamaterial structure, and the length of the fourth parasitic stub 244 is greater than the length of the fourth parasitic stub 244 shown in

[0292] In one embodiment, the fourth parasitic stub 244 includes a fifth connection point. The antenna 200 further includes a fourth electronic component, and the fourth electronic component is coupled between the fifth connection point and the ground plane 300.

[0293] It should be understood that the fourth parasitic stub 244 is electrically connected to the ground plane 300 through a fourth electronic component at the fifth connection point. When the fourth parasitic stub 244 generates a fourth parasitic resonance, the current on the fourth parasitic stub 244 is shunted in the area near the fifth connection point. Since the shunting occurs in the area near the fifth connection point, the current density on the fourth parasitic stub 244 can be dispersed. In one embodiment, the current distribution of the fourth parasitic stub 244 is relatively more dispersed, thereby reducing the conductor loss of the fourth parasitic stub 244. In one embodiment, the current distribution of the fourth parasitic stub 244 is relatively more dispersed, which can increase the radiation aperture of the fourth parasitic stub 244. Since the conductor loss of the fourth parasitic stub 244 is reduced and the radiation aperture of the antenna 200 is increased, the system efficiency and radiation efficiency of the antenna can be improved.

[0294] In one embodiment, in Figure 23 In the antenna 200 shown, the electrical length of the fourth parasitic stub 244 is one-quarter of the first wavelength, and the first wavelength can be the wavelength corresponding to the fourth parasitic resonance generated by the fourth parasitic stub 244. In one embodiment, in Figure 25 In the antenna 200 shown, the electrical length of the fourth parasitic stub 244 is greater than three-eighths of the first wavelength. In Figure 25 In the antenna 200 shown, the parasitic resonance of the fourth parasitic stub 244 can correspond to the quarter-wavelength mode. Through the fifth insulating gap, the electrical length of the fourth parasitic stub 244 can be made greater than three-eighths of the first wavelength, the current on the fourth parasitic stub 244 is in the same direction (e.g., no reverse occurs), and the electric field between the fourth parasitic stub 244 and the ground does not reverse. The electrical length of the fourth parasitic stub 244 increases from one-quarter wavelength of the first wavelength to more than three-eighths of the first wavelength, but still operates in the quarter-wavelength mode. In this case, the current density on the fourth parasitic stub 244 is dispersed, and the electric field density between the fourth parasitic stub 244 and the ground plane 300 is weakened, thereby reducing the conductor loss and dielectric loss brought by the conductor and dielectric arranged around the fourth parasitic stub 244 and the fourth parasitic stub 244, and further improving the radiation characteristics of the antenna 200. The fourth parasitic stub 244 increases the radiation aperture, effectively improving the system efficiency and radiation efficiency of the antenna 200.

[0295] Wherein, the first wavelength can be understood as the vacuum wavelength corresponding to the resonance point of the parasitic resonance, or it can also be understood as the vacuum wavelength corresponding to the center frequency of the resonance frequency band formed by the parasitic resonance. Since there is a certain correspondence between the vacuum wavelength and the dielectric wavelength, the above ratio can be converted to the dielectric wavelength, which will not be elaborated one by one in this application.

[0296] In one embodiment, the third electronic component 263 can include an inductor or an electronic component equivalent to a capacitor.

[0297] In one embodiment, the equivalent inductance value of the third electronic component 263 may be less than or equal to 10 nH.

[0298] In one embodiment, the fourth electronic component may include a capacitor or an electronic component equivalent to a capacitor.

[0299] In one embodiment, the equivalent capacitance value of the fourth electronic component may be less than or equal to a first threshold value. The first threshold value may be designed according to the resonant point frequency of the parasitic resonance generated by the fourth parasitic stub 244. When the resonant point frequency of the parasitic resonance is less than or equal to 1 GHz, the first threshold value is 10 pF. When the resonant point frequency of the parasitic resonance is greater than 1 GHz, the first threshold value is 2 pF.

[0300] 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 frequencies of the resonant points of different parasitic resonances, the current distribution on the fourth parasitic stub 244 can be made more dispersed, reducing conductor losses and increasing the radiation aperture of the fourth parasitic stub 244, thereby improving the radiation characteristics of the antenna (e.g., radiation efficiency and system efficiency).

[0301] In one embodiment, the distance between the third connection point 223 and / or the fourth connection point 224 and the fifth insulating gap is less than or equal to 5 mm.

[0302] Wherein, 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 through a connecting member (e.g., a metal shrapnel), the distance from the fifth insulating gap can be understood as the minimum distance between the center of the part where the connecting member contacts the connection point and the conductors on both sides of the fifth insulating gap.

[0303] In one embodiment, the fifth connection point coincides with the third connection point 223 and / or the fourth connection point 224.

[0304] In one embodiment, when the length of the fourth parasitic stub 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 stub 244 can be better adjusted, improving the radiation characteristics of the antenna 200.

[0305] For the sake of brevity of discussion, Figure 25 the antenna 200 shown and Figure 23Parts similar to the antenna 200 shown will not be described one by one. For example, the similar parts include: the position of the fourth parasitic stub 244, the position of the first radiator 231, the position of the first parasitic stub 241, and the relative positions between the first radiator 231 and the first parasitic stub 241; the frequency band for satellite communication; the first radiator 231 and the first parasitic stub 241 jointly generate a first resonance; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0306] Figure 26 is Figure 25 The radiation pattern of the antenna 200 in the foldable electronic device 100 shown at 2 GHz.

[0307] As Figure 26 shown, the fourth parasitic stub 244 being a metamaterial structure can still suppress the current (transverse traveling wave) on the floor on one side of the second housing, 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 shift significantly to the right side of the first direction (for example, Figure 26 the region where 0° ≤ Phi ≤ 180° in the radiation pattern shown).

[0308] Since the radiation generated by the main resonance will not shift significantly to the right side of the first direction, when the foldable electronic device is in the unfolded state, the radiation intensity on the left side of the first direction of the antenna 200 (for example, Figure 24 the region where 180° ≤ Phi ≤ 360° in the radiation pattern shown) increases. Therefore, the radiation characteristics of the antenna 200 on the right side of the first direction can be adjusted through the fourth parasitic stub 244, so that the antenna 200 has a wide beam characteristic.

[0309] The second parasitic stub 242 enhances the radiation characteristics of the first parasitic stub 241, making the direction of the radiation generated by the first parasitic stub 241 deviate to the left side of the first direction (for example, Figure 24 the intensity in the region where 180° ≤ Phi ≤ 360° in the radiation pattern shown) increase.

[0310] It should be understood that the second electronic component can be used to adjust the coupling amount between the second parasitic stub and the first radiator, adjust the current flowing to the first parasitic stub, and change the intensity of the radiation generated by the first parasitic stub deviating to the left side of the first direction, thereby determining the wide beam characteristic of the antenna 200.

[0311] Figure 27 is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0312] As Figure 27As shown, the second border 220 has a fifth insulation gap and a fourth insulation 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 or bottom sides of the foldable electronic device 100.

[0313] The antenna 200 may further include a fourth parasitic stub 244. The fourth parasitic stub 244 is a conductive part of the second border 220 between the sixth position 216 and the seventh position 217. At least part of the fourth parasitic stub 244 is spaced apart from the floor 300. In one embodiment, the first end and the second end of the fourth parasitic stub 244 are open ends.

[0314] In one embodiment, the fourth parasitic stub 244 can be used to generate a fourth parasitic resonance.

[0315] It should be understood that when the fourth parasitic resonance is close to the first resonance, the intensity of the radiation generated by the main resonance towards the right side of the first direction (the first direction is towards the side of the rotating shaft 203) decreases. By adjusting the frequency difference between the fourth parasitic resonance and the first resonance, the antenna 200 can have different characteristics in the radiation pattern generated on the right side of the first direction (the first direction is towards the side of the rotating shaft 203), so as to flexibly adjust the intensity of the radiation pattern on the right side of the first direction (the first direction is towards the side of the rotating shaft 203), and achieve the wide beam characteristic of the antenna 200.

[0316] It should be understood, Figure 27 The shown antenna 200 and Figure 23 , Figure 25 The shown antenna 200 only differ in that the second border 220 has a fifth insulation gap at the sixth position 216. In Figure 23 , Figure 25 In the shown antenna 200, the fourth parasitic stub 244 has a structure with one end being a grounded end and the other end being an open end, and the fourth parasitic stub 244 all operates in the quarter-wavelength mode. While in Figure 27 In the shown antenna 200, the first end and the second end of the fourth parasitic stub 244 are open ends, which can form a structure similar to a dipole antenna, and the fourth parasitic stub 244 operates in the half-wavelength mode.

[0317] For the sake of simplicity of discussion, Figure 27 The shown antenna 200 and Figure 23 , Figure 25Similar parts of the antenna 200 shown are not described one by one. For example, the similar parts include: the position of the fourth parasitic stub 244, the position of the first radiator 231, the position of the first parasitic stub 241, and the relative positions between the first radiator 231 and the first parasitic stub 241; the frequency band of satellite communication; the first radiator 231 and the first parasitic stub 241 jointly generate a first resonance; the positions of the first feeding point 251 and the first connection point 221; and so on.

[0318] Figure 28 FIG. is a schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0319] As Figure 28 As shown, the second frame 220 includes a sixth position 216, a seventh position 217, an eighth position 218, and a ninth position 219 arranged in sequence. The second frame 220 respectively opens a fourth insulating gap, a fifth insulating gap, and a sixth insulating gap at the sixth position 216, the seventh position 217, and the ninth position 219. The second frame 220 is coupled and connected to the floor 300 at the eighth position 218.

[0320] Among them, 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.

[0321] In one embodiment, when the foldable electronic device 100 is in an 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.

[0322] It should be understood that for the sake of simplicity of discussion, in the embodiments of the present application, only the case where the first side 301 and the third side 303 are the top side of the foldable electronic device 100 is taken as an example for illustration.

[0323] 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.

[0324] Among them, the second radiator 232 is the conductive part of the second frame 220 between the sixth position 216 and the seventh position 217. The fifth parasitic stub 245 is the conductive part of the second frame 220 between the eighth position 218 and the ninth position 219. In one embodiment, the first end and the second end of the second radiator 232 are open ends. The first end of the fifth parasitic stub 245 is a grounded end, and the second end is an open end.

[0325] The second radiator 232 includes a second feeding point 252 and a sixth connection point 226. The second feeding circuit 240 is coupled to the second feeding point 252. A fifth electronic component 265 is coupled between the sixth connection point 226 and the ground plane 300. Among them, the second feeding point 252 and the sixth connection point 226 are respectively located on both sides of the virtual axis of the second radiator 232, and the lengths of the second radiator 232 on both sides of the virtual axis are the same.

[0326] The operating frequency band of the antenna 400 may include the satellite communication frequency band. When the foldable electronic device 100 is in the unfolded state, the second radiator 232 and the fifth parasitic stub 245 are used to jointly generate a second resonance, and the resonance frequency band of the second resonance includes the satellite communication frequency band.

[0327] It should be understood that Figure 28 the shown antenna 200 and Figure 9 、 Figure 16 、 Figure 18 The difference between the shown antenna 200 and Figure 28 in the shown foldable electronic device 100 is only the antenna 400. In Figure 9 、 Figure 16 、 Figure 18 the shown foldable electronic device 100, the antenna 400 can be any one of the shown antennas 200.

[0328] Meanwhile, Figure 28 the shown antenna 200 and the antenna 400 may have the same antenna structure or different antenna structures. The embodiments of the present application do not limit this and can be determined according to actual production or design. For the sake of simplicity of discussion, in Figure 28 the shown foldable electronic device 100, only the case where the antenna 200 and the antenna 400 are Figure 9 the shown antenna 200 is taken as an example for illustration.

[0329] According to the embodiments of the present application, both the antenna 200 and the antenna 400 can operate in the satellite communication frequency band. According to the above embodiments, both the antenna 200 and the antenna 400 have wide beam characteristics. Therefore, the radiation patterns generated by the antenna 200 and the antenna 400 can be superimposed, so that the foldable electronic device 100 has better satellite communication performance.

[0330] In one embodiment, when the foldable electronic device 100 is in the 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 improve the aesthetic degree of the foldable electronic device 100.

[0331] It should be understood that in the embodiments of the present application, alignment can be understood as that two slits at least partially overlap in the thickness direction of the foldable electronic device 100.

[0332] In one embodiment, when 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 stub 241 and the fifth parasitic stub 245 at least partially overlap in the thickness direction of the foldable electronic device, so as to improve the aesthetic degree of the foldable electronic device 100.

[0333] Figure 29 It is a schematic diagram of an electronic device 100 provided by the embodiments of the present application.

[0334] It should be understood that in the above embodiments, the electronic device 100 is taken as an example of a foldable electronic device for illustration. 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. Figure 29 and the electronic device 100 shown in the subsequent embodiments Figures 9 to 28 The difference between the electronic device 100 shown in and the electronic device 100 shown in is only that the forms of the electronic devices are different, and the similar parts will not be described in detail one by one. For example, the similar parts include: relevant parameters of the insulating slits opened on the frame; satellite communication frequency bands; efficiency pits generated by parasitic resonances generated by parasitic stubs within the operating frequency band; and so on.

[0335] Such as Figure 29 As shown, the electronic device 100 may include a first frame 210, and at least a part of the first frame 210 is spaced apart from the floor 300.

[0336] The first frame 210 includes a first side 301 and a second side 302 that intersect at an angle.

[0337] The first side 301 includes a first position 211 and a second position 212. The first frame 210 has a first insulating slit and a second insulating slit at the first position 211 and the second position 212 respectively.

[0338] 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 slit at the fourth position 214.

[0339] 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.

[0340] Among them, the first radiator 231 is the conductive part of the first frame 210 between the first position 211 and the second position 212. In one embodiment, at least part of the first radiator 231 is spaced from the floor 300. In one embodiment, the first end and the second end of the first radiator 231 are open ends.

[0341] The first parasitic stub 241 is the conductive part of the first frame 210 between the third position 213 and the fourth position 214. In one embodiment, at least part of the first parasitic stub 241 is spaced from the floor 300. In one embodiment, the first end of the first parasitic stub 241 is a grounded end and the second end is an open end.

[0342] 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.

[0343] 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.

[0344] 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 extending direction of the first side 301 (for example, the x direction). 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 extending direction of the first side 301 (for example, the x direction) and the length L1 of the first radiator 231. For example, 2×L1≤L0', 2.5×L1≤L0', 3×L1≤L0'.

[0345] 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.

[0346] 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 extending direction of the first side 301 (for example, the x direction). For the sake of simplicity of discussion, the distances between the sides described in the embodiments of the present application can be understood accordingly.

[0347] The first radiator 231 is used to generate a first resonance. The resonance frequency band of the first resonance includes the satellite communication frequency band.

[0348] In one embodiment, the resonant frequency bands of the first resonance may all include the transmission frequency band of the satellite communication frequency band. For example, one of the frequency bands in the transmission frequency band (1980 MHz - 2010 MHz) of the Tian Tong satellite system, the transmission frequency band (1610 MHz - 1626.5 MHz) of the BeiDou satellite system, and the transmission frequency band (2500 MHz - 2520 MHz) of the low-earth orbit satellite system. In one embodiment, the resonant frequency bands of the first resonance may all include the reception frequency band of the satellite communication frequency band. For example, one of the frequency bands in the reception frequency band (2170 MHz - 2200 MHz) of the Tian Tong satellite system, the reception frequency band (2483.5 MHz - 2500 MHz) of the BeiDou satellite system, and the reception frequency band (2670 MHz - 2690 MHz) of the low-earth orbit satellite system.

[0349] The first radiator 231 and the first parasitic stub 241 are used to generate the radiation pattern of the antenna 200.

[0350] According to the embodiment of the present application, when the length of the first side 301 is relatively long (2×L1 ≤ L0), and the first radiator 231 is disposed close to the second side 302 (L1’ ≤ L1×0.5), the first parasitic stub 241 deflects the radiation pattern generated by the antenna 200 toward the side of the first parasitic stub 241, so that the radiation pattern generated by the antenna 200 is not affected by the floor 300. Since the radiation pattern generated by the antenna 200 is not affected by the floor 300, there is no large angular difference (for example, the angular difference is less than or equal to 30°) between the maximum radiation direction of the radiation pattern generated by the antenna 200 and the top direction of the electronic device 100 (the direction perpendicular to the extension direction of the first side 301, for example, the z direction). Therefore, the communication satellite can always be located in the area where the antenna 200 has good radiation characteristics (for example, at least part of the maximum radiation direction of the radiation pattern generated by the antenna overlaps with the target radiation direction), so as to maintain the satellite alignment state with the communication satellite, effectively improving the user experience.

[0351] 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.

[0352] 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 the radiation pattern of the antenna 200.

[0353] The second parasitic stub 241 is the conductive portion of the first border 210 between the fifth position 215 and the sixth position 216. At least a portion of the second parasitic stub 242 is spaced apart from the floor 300. In one embodiment, the first end of the second parasitic stub 242 is a ground end and the second end is an open end.

[0354] It should be understood that the first parasitic stub 241 and the second parasitic stub 242 can adjust the radiation pattern generated by the antenna 200, so that the radiation pattern of the antenna 200 has a more flexible adjustment range.

[0355] 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.

[0356] 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.

[0357] It should be understood that the first switch branch 281 and the second switch branch 282 being coupled between the floor 300 and the first connection point 221 through the first switch 271 can be understood as the first switch branch 281 and the second switch branch 282 being coupled between the first switch 271 and the first connection point 221, or the first switch branch 281 and the second switch branch 282 being coupled between the first switch 271 and the floor 300. For the sake of brevity in discussion, in the embodiments of the present application, the switch branches being coupled between the connection point and the floor 300 through the switch can be correspondingly understood as such, and will not be elaborated one by one.

[0358] The "switch" in the present application can all include one or more switching devices; the "first connection point", "second connection point", "third connection point", etc. in the present application can all include one or more connection points. In one embodiment, one of the switch branches can be coupled between the floor 300 and the parasitic stub through one switching device in the switch and one connection point in the connection points; the other switch branch can be coupled between the floor 300 and the parasitic stub through another switching device in the switch and another connection point in the connection points. In the embodiments of the present application, the switch is only used to switch to different switch branches coupled to the radiator, and does not limit its specific position and specific form.

[0359] In the embodiments of the present application, the switch branch can be understood as the circuit between the switch and the connection point (for example, the first connection point 211) or the floor 300, and can be switched by the switch to different switch branches, so that the equivalent capacitance, equivalent resistance, or equivalent inductance coupled to the connection point is different.

[0360] In one embodiment, the switching branch may include one or more electronic components. 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 switching branch may also include a switch, and the equivalent capacitance value and / or equivalent inductance value and / or equivalent resistance value in different states of the switching branch may be switched by the switch.

[0361] In one embodiment, the switching branch may not include electronic components. The switching branch may be used to determine the boundary conditions at the first connection point. For example, when the switching branch is in an open state and the switch common port is connected to the switching branch, the first connection point 221 is in an open state (not coupled to the floor 300 through a device). Or, when the switching branch is in a short-circuit state and the switch common port is connected to the switching branch, the first connection point 221 is in a short-circuit state (electrically connected to the floor 300 through a branch, without other electronic components provided). For the sake of brevity in the discussion, in Figure 29 the illustrated electronic device 100, only the case where the switching branch includes equivalent electronic components is taken as an example for illustration, and details will not be repeated one by one.

[0362] It should be understood that for the sake of brevity in the discussion, the switching branches described in the embodiments of the present application can be correspondingly understood, and details will not be repeated one by one.

[0363] The second parasitic branch 242 includes a second connection point 222. The third switching branch 283 and the fourth switching branch 284 are coupled and connected between the floor 300 and the second connection point 200 through the second switch 272.

[0364] The first radiator 231, the first parasitic branch 241, the second parasitic branch 242, the first switching branch 281 and the third switching branch 283 are used to generate a first resonance. The resonance frequency band of the first resonance includes the satellite communication frequency band.

[0365] The first radiator 231, the first parasitic branch 241, the second parasitic branch 242, the second switching branch 282 and the fourth switching branch 284 are used to generate a second resonance. The resonance frequency band of the second resonance includes the satellite communication frequency band.

[0366] In one embodiment, the resonant frequency bands of the first resonance and the second resonance may both include the transmission frequency band of the satellite communication frequency band. For example, one of the transmission frequency bands in the Tiantong satellite system (1980 MHz - 2010 MHz), the transmission frequency band in the Beidou satellite system (1610 MHz - 1626.5 MHz), and the transmission frequency band in the low-earth orbit satellite system (2500 MHz - 2520 MHz). In one embodiment, the resonant frequency bands of the first resonance and the second resonance may both include the reception frequency band of the satellite communication frequency band. For example, one of the reception frequency bands in the Tiantong satellite system (2170 MHz - 2200 MHz), the reception frequency band in the Beidou satellite system (2483.5 MHz - 2500 MHz), and the reception frequency band in the low-earth orbit satellite system (2670 MHz - 2690 MHz).

[0367] 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 used 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 used to generate a second radiation pattern. Among them, the first radiation pattern and the second radiation pattern are different.

[0368] Among them, the fact that the first radiation pattern and the second radiation pattern are different can be understood as that the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern are different.

[0369] It should be understood that, in the embodiments of the present application, the maximum radiation direction can be understood as the direction towards the maximum value of the gain in the radiation pattern generated by the antenna in one embodiment, and can also be understood as the direction towards the maximum value of the gain in the continuous radiation area (where the gain is greater than or equal to the threshold) in the radiation pattern generated by the antenna in another embodiment. In yet another embodiment, it can also be understood as the direction towards the maximum value of the gain in the preset radiation area (for example, the top area of the electronic device) in the radiation pattern generated by the antenna (for example, the antenna has multiple maximum radiation directions, one towards the top and one towards the back cover. Assuming that the top is the main radiation area, the back cover direction may have a single angle exceeding the maximum value of the gain in the main radiation area, but the maximum radiation direction described in the embodiments of the present application only considers the direction towards the maximum value of the gain in the main radiation area in the radiation pattern). In the relevant descriptions in the embodiments of the present application, they can be understood accordingly. For the sake of brevity of the discussion, they will not be elaborated one by one.

[0370] It should be understood that when the first radiator 231 is disposed close to the second side 302 (L1’≤L1×0.5), the first parasitic stub 241 and the second parasitic stub 242 coupling different switching branches can enable the antenna 200 to have different radiation patterns in the satellite communication frequency band. The electronic device 100 can switch the switching branch coupled to the parasitic stub according to the relative position between the communication satellite and the electronic device 100, so that the communication satellite is always located in the area where the antenna 200 has good radiation characteristics (for example, at least part of the maximum radiation direction of the radiation pattern generated by the antenna overlaps with the target radiation direction), so as to maintain the satellite alignment state with the communication satellite, effectively improving the user experience.

[0371] In one embodiment, when the first switching branch 281 is coupled to the first connection point 221 and the third switching branch 283 is coupled to the second connection point 222, the first feeding circuit 230 feeds an electrical signal. The first radiator 231 is used to generate a first main resonance, the first parasitic stub 241 is used to generate a first parasitic resonance, and the second parasitic stub 242 does not generate a parasitic resonance. The first main resonance and the first parasitic resonance together form the above-mentioned first resonance (since the resonance points of the first parasitic resonance and the first main resonance have a small frequency difference, in the S-parameter diagram, the first main resonance and the first parasitic resonance are fused into one resonance).

[0372] It should be understood that the second parasitic stub 242 not generating a parasitic resonance can be understood as that the third switching branch 283 is used to make the parasitic resonance generated by the second parasitic stub 242 outside the resonance frequency band of the first main resonance. For example, the resonance point frequency of the parasitic resonance generated by the second parasitic stub 242 and the resonance point frequency of the first main resonance are greater than or equal to 300 MHz. For the sake of brevity in discussion, in the embodiments of the present application, not generating a parasitic resonance can be correspondingly understood, and will not be elaborated one by one.

[0373] In one embodiment, when the second switching branch 282 is coupled to the first connection point 221 and the fourth switching branch 284 is coupled to the second connection point 222, the first feeding circuit 230 feeds an electrical signal. The first radiator 231 is used to generate a second main resonance, the first parasitic stub 241 does not generate a parasitic resonance, and the second parasitic stub 242 is used to generate a second parasitic resonance. The second main resonance and the second parasitic resonance together form the above-mentioned second resonance (since the resonance points of the second parasitic resonance and the second main resonance have a small frequency difference, in the S-parameter diagram, the second main resonance and the second parasitic resonance are fused into one resonance).

[0374] 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 are in the same direction, as Figure 30 shown.

[0375] 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 cause the radiation pattern generated by the antenna 200 to deflect towards the side close to the first parasitic stub 241.

[0376] 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 in opposite directions, as Figure 31 shown.

[0377] 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 cause the radiation pattern generated by the antenna 200 to deflect towards the side away from the second parasitic stub 242.

[0378] 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: 0 ≤ L2' ≤ L2 × 2.5.

[0379] 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 close 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: L3 ≤ L3' ≤ L3 × 5.

[0380] It should be understood that in the embodiments of the present application, only the case where the grounding end of the first parasitic stub 241 is close to the first side 301 and the open end of the second parasitic stub 242 is close to the first side 301 is taken as an example for illustration. In actual production or application, both the grounding end of the first parasitic stub 241 and the grounding end of the second parasitic stub 242 can be close to the first side 301, or both the open end of the first parasitic stub 241 and the open end of the second parasitic stub 242 can be close to the first side 301. In this case, the parasitic stubs with the grounding end or the open end close to the first side in the above embodiments can be understood accordingly. For the sake of simplicity of discussion, it will not be elaborated one by one.

[0381] 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.

[0382] It should be understood that the first end and the second end of the first radiator 231 are open ends. The first radiator 231 can operate in a half-wavelength mode. The first end of the first parasitic stub 241 is a grounded end and the second end is an open end. The first end of the second parasitic stub 242 is a grounded end and the second end is an open end. The first parasitic stub 241 and the second parasitic stub 242 can operate in a quarter-wavelength mode.

[0383] In one embodiment, the length L2 of the first parasitic stub 241 and the length L3 of the second parasitic stub 242 satisfy: 0.9×L2 ≤ L3 ≤ 1.1×L2.

[0384] It should be understood that when the length L2 of the first parasitic stub 241 and the length L3 of the second parasitic stub 242 are substantially the same, the antenna 200 has better symmetry and better radiation characteristics.

[0385] In one embodiment, the first switch branch 281, the second switch branch 282, the third switch branch 283, and the fourth switch branch 284 can be capacitors or elements equivalent to capacitors.

[0386] 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 (0.9×L2 ≤ L3 ≤ 1.1×L2), the equivalent capacitance value of the first switch branch 281 is greater than the equivalent capacitance value of the fourth switch branch 284.

[0387] It should be understood that when the first switch 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, so that the current on the first radiator 231 and the current on the first parasitic stub 241 are in 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. Since the excitation of the first parasitic resonance is weak, 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 with reference to the radiation efficiency pit in the above embodiment.

[0388] 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 stub 242 is lower than the resonance point of the second resonance to excite a standing wave on the ground plane 300, so that the current on the first radiator 231 and the current on the second parasitic stub 242 are in the opposite direction. 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. Since the excitation of the second parasitic resonance is weak, 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 with reference to the radiation efficiency pit in the above embodiment.

[0389] Correspondingly, to achieve the above technical effects, when the lengths L2 of the first parasitic stub 241 and L3 of the second parasitic stub 242 are substantially the same, the equivalent capacitance value of the first switching branch 281 is greater than the equivalent capacitance value of the fourth switching branch 284.

[0390] 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.

[0391] 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.

[0392] It should be understood that the open end of the radiator (parasitic stub) has a strong 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.

[0393] In one embodiment, the antenna 200 further includes a first electronic component. The first parasitic stub 241 includes a third connection point and a fourth connection point, and 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 between the third connection point and the fourth connection point.

[0394] In one embodiment, the antenna 200 further includes a second electronic component. The second parasitic stub 242 includes a fifth connection point and a sixth connection point, and the second parasitic stub 242 has a sixth insulating gap between the fifth connection point and the sixth connection point. The second electronic component is coupled between the fifth connection point and the sixth connection point.

[0395] It should be understood that the first parasitic stub 241 and / or the second parasitic stub 242 can form a metamaterial structure to expand the radiation aperture of the antenna 200 and enable the antenna 200 to have better radiation characteristics. Similarly, the metamaterial structure is similar to the metamaterial structure in the above embodiments. For the sake of brevity of discussion, it will not be elaborated one by one.

[0396] In one embodiment, an electronic component is coupled between the first radiator 231 and the ground plane 300, such as Figure 32 and Figure 33 as shown.

[0397] It should be understood that the connection manner of this electronic component is the same as that in Figures 9 to 28The connection manner of the first electronic component 261 in the electronic device 100 shown is similar. For the sake of brevity of discussion, it will not be elaborated one by one.

[0398] In one embodiment, the third position 213, the fourth position 214, the fifth position 215, and the sixth position 216 are arranged in sequence on the second side 302. In one embodiment, the open ends of the first parasitic stub 241 and the second parasitic stub 242 are close to each other.

[0399] In one embodiment, the fourth position 214 and the fifth position 215 coincide, as Figure 32 shown. The third insulating gap and the fourth insulating gap coincide. One end of the first parasitic stub 241 and one end of the second parasitic stub 242 are opposite and do not contact each other. The first parasitic stub 241 and the second parasitic stub 242 can jointly form a structure similar to a slot antenna.

[0400] In one embodiment, the fourth position 214, the third position 213, the sixth position 216, and the fifth position 215 are arranged in sequence on the second side 302, as Figure 33 shown. In one embodiment, the grounded ends of the first parasitic stub 241 and the second parasitic stub 242 are close to each other.

[0401] In one embodiment, the third position 213 and the sixth position 215 coincide, as Figure 33 shown. The first parasitic stub 241 and the second parasitic stub 242 can jointly form a structure similar to a T antenna.

[0402] It should be understood that in the embodiments of the present application, only the example where the grounded ends of the first parasitic stub 241 and the second parasitic stub 242 are close to each other, or the open ends of the first parasitic stub 241 and the second parasitic stub 242 are close to each other is used for illustration. In actual production or design, the open end of the first parasitic stub 241 can also be close to the grounded end of the second parasitic stub 242, and the embodiments of the present application do not limit this.

[0403] Meanwhile, in the embodiments of the present application, only the example where the first parasitic stub 241 is closer to the first side 301 than the second parasitic stub 242 is used for illustration. In actual production or design, the first parasitic stub 241 can also be farther from the first side 301 than the second parasitic stub 242, and the embodiments of the present application do not limit this.

[0404] It should be understood that in the above embodiments ( Figures 29 to 33In the electronic device 100 shown, when the first radiator 231 generates resonance, one of the first parasitic stub 241 and the second parasitic stub 242 generates parasitic resonance, and the electronic device 100 enables the antenna 200 to generate different radiation patterns by switching the parasitic stub that generates parasitic resonance. In actual production or design, when the first radiator 231 generates resonance, the first parasitic stub 241 and the second parasitic stub 242 can jointly generate parasitic resonance, and by switching the directions of the currents on the first parasitic stub 241 and the second parasitic stub 242, the antenna 200 can generate different radiation patterns.

[0405] 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 feeding circuit 230 feeds an electrical signal, the first radiator 231 is configured to generate a first main resonance, and the first parasitic stub 241 and the second parasitic stub 242 jointly generate a first parasitic resonance. The first main resonance and the first parasitic resonance jointly form the above-mentioned first resonance.

[0406] In one embodiment, at the resonance point of the first resonance, the currents on the first radiator 231, the first parasitic stub 241, and the second parasitic stub 242 are in the same direction, as Figure 34 shown.

[0407] It should be understood that when the currents on the first radiator 231, the first parasitic stub 241, and the second parasitic stub 242 are in the same direction, the first parasitic stub 241 and the second parasitic stub 242 can cause the radiation pattern generated by the antenna 200 to deflect towards the side close to the first parasitic stub 241 (the second parasitic stub 242).

[0408] 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 feeding circuit 230 feeds an electrical signal, the first radiator 231 is configured to generate a second main resonance, and the first parasitic stub 241 and the second parasitic stub 242 jointly generate a second parasitic resonance. The second main resonance and the second parasitic resonance jointly form the above-mentioned second resonance.

[0409] In one embodiment, at the resonance point of the second resonance, the currents on the first radiator 231, the first parasitic stub 241, and the second parasitic stub 242 are in opposite directions, as Figure 35 shown.

[0410] It should be understood that when the currents on the first radiator 231 and the first parasitic stub 241 and the current on the second parasitic stub 242 are in opposite directions, the first parasitic stub 241 and the second parasitic stub 242 can deflect the radiation pattern generated by the antenna 200 towards the side away from the first parasitic stub 241 (the second parasitic stub 242).

[0411] It should be understood that for the sake of brevity of discussion, in Figure 34 and Figure 35 in the illustrated electronic device 100, only the case where the fourth position 214 and the fifth position 215 coincide is taken as an example for illustration. In actual production or design, other conductor parts may be provided between the first parasitic stub 241 and the second parasitic stub 242, which will not be elaborated one by one.

[0412] Meanwhile, in Figure 34 and Figure 35 in the illustrated electronic device 100, only the case where the antenna 200 includes the first parasitic stub 241 and the second parasitic stub 242 is taken as an example for illustration. In actual production or design, the antenna 200 may include multiple parasitic stubs. For example, it may also include a third parasitic stub, and parasitic resonance is jointly generated by the first parasitic stub 241, the second parasitic stub 242, and the third parasitic stub. For the sake of brevity of discussion, it will not be elaborated one by one.

[0413] As mentioned above, the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A foldable electronic device, characterized in that: include: a first shell and a floor, wherein The first shell includes a first frame, the first frame includes a first side and a second side that intersect at an angle, the first frame includes a first position, a second position, a third position and a fourth position that are sequentially arranged, the first position and the second position are located at the first side, the third position and the fourth position are located at 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, wherein 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 comprising: a first radiator and a first parasitic branch, wherein the first radiator is a conductive portion of a first frame between the first position and the second position, the first parasitic branch is a conductive portion of the first frame between the third position and the fourth position, at least a portion of the first radiator is spaced apart from the floor, and at least a portion of the first parasitic branch is spaced apart from the floor; and a first feeding circuit and a first electronic component, the first radiator comprising 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 a virtual axis of the first radiator, and the first radiator on both sides of the virtual axis has the same length; 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.

2. The foldable electronic device according to claim 1, characterized in that: 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 node 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 an unfolded state, the beam width of the first antenna is related to the first parasitic branch.

4. The foldable electronic device according to any one of claims 1 to 3, characterized in that: Based on the first feeding point being located on the first side of the virtual axis, the first connection point being located on the second side of the virtual axis, and the first electronic component being open circuit, 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 being greater than or equal to 20 nH, Based on the resonance 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 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.

5. The foldable electronic device according to any one of claims 1 to 3, characterized in that: 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, and the first electronic component being short-circuited, or, Based on the resonance point frequency of the first resonance being greater than or equal to 3 GHz, the equivalent capacitance value of the first electronic component being greater than or equal to 0.5 pF, Based on the resonance 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 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.

6. The foldable electronic device according to any one of claims 1 to 5, characterized in that: 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, A distance between the first connection point and the first position or the second position is less than or equal to one third of a length of the first radiator.

7. The foldable electronic device according to any one of claims 1 to 6, characterized in that: 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 a resonance 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, characterized in that: The antenna generates an efficiency pit at a first frequency point, and a frequency difference between a resonance point frequency of the first resonance and a frequency of the first frequency point is less than or equal to 50 MHz.

9. The foldable electronic device according to any one of claims 1 to 8, characterized in that: Based on the fact that the foldable electronic device performs 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.

10. The foldable electronic device according to any one of claims 1 to 9, characterized in that: 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.

11. The foldable electronic device according to claim 10, characterized in that: 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 further includes a second electronic component, the first end of the second parasitic stub includes a second connection point, and the second electronic component is coupled and connected between the ground and the second connection point.

12. The foldable electronic device according to any one of claims 1 to 11, characterized in that: The first frame further 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 further includes a third parasitic branch, which is a conductive portion of the first frame between the first position and the fifth position, and at least a portion of the third parasitic branch is spaced apart from the floor.

13. The foldable electronic device according to any one of claims 1 to 12, characterized in that: 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 further includes a fourth parasitic branch, which is a conductive portion of the second frame between the sixth position and the seventh position, and at least a portion of the fourth parasitic branch is spaced apart from the floor; Based on the fact that the foldable electronic device is in an 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, characterized in that: 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 defines a fifth insulating gap between the third connection point and the fourth connection point. The third electronic component is coupled and connected between the third connection point and the fourth connection point.

15. The foldable electronic device according to claim 14, characterized in that: 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, characterized in that: Based on the foldable electronic device being in an 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, characterized in that: 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 is provided with a fourth insulating gap and a fifth insulating gap at the sixth position and the seventh position; The first antenna further includes a fourth parasitic branch, which is a conductive portion of the second frame between the sixth position and the seventh position, and at least a portion of the fourth parasitic branch is spaced apart from the floor; Based on the fact that the foldable electronic device is in an 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, characterized in that: The second shell 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 that are sequentially arranged, 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, wherein the second antenna includes: a second radiator and a fifth parasitic branch, wherein the second radiator is a conductive portion of the second frame between the sixth position and the seventh position, the fifth parasitic branch is a conductive portion of the second frame between the eighth position and the ninth position, at least a portion of the second radiator is spaced apart from the floor, and at least a portion of the fifth parasitic branch is spaced apart from the floor; and a second feeding circuit and a fourth electronic component, the second radiator comprises 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 a resonance frequency band of the second resonance includes a satellite communication frequency band.

19. The foldable electronic device according to claim 18, characterized in that: Based on the fact that the foldable electronic device is in a folded state, the first radiator and the second radiator at least partially overlap in a 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.

20. The foldable electronic device according to claim 18 or 19, characterized in that: 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.

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

2.

22. The foldable electronic device according to any one of claims 1 to 21, characterized in that: The foldable electronic device performs at least one of the following services in the satellite communication frequency band: satellite receiving and / or sending short messages, satellite calling and / or answering calls, and satellite data.

23. An electronic device, characterized in that: include: floor; a frame, the frame comprising 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; as well as An antenna, comprising: a radiator and a first parasitic branch, the radiator being a conductive portion of the frame between the first position and the second position, the first parasitic branch being a conductive portion of the frame between the third position and the fourth position, at least a portion of the radiator being spaced apart from the floor, and at least a portion of the first parasitic branch being spaced apart from the floor; and A feeding circuit, the radiator comprising a feeding point, the feeding circuit being 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 a satellite communication frequency band, and wherein the radiator and the first parasitic branch are used to generate a directional pattern of the antenna.

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

25. The electronic device according to claim 23 or 24, characterized in that: 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; as well as The antenna also includes: a second parasitic branch, wherein the second parasitic branch is a conductive portion of the frame between the fifth position and the sixth position, and at least a portion of the second parasitic branch is spaced apart from the floor; The radiator, the first parasitic branch and the second parasitic branch are used to generate a directional pattern of the antenna.

26. The electronic device according to claim 25, characterized in that: The antenna also includes: a first switch, a first switch branch, and a second switch branch, the first parasitic branch includes a second connection point, the first switch branch and the second switch branch are coupled and connected 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 branch comprises a third connection point, and the third switch branch and the fourth switch branch are coupled and connected between the floor and the third connection point through the second switch; The radiator, the first parasitic branch, the second parasitic branch, the first switch branch and the third switch branch are used 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 branch, the second parasitic branch, the second switch branch and the fourth switch branch are used 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, characterized in that: The radiator, the first parasitic branch, the second parasitic branch, the first switch branch and the third switch branch are used to generate a first directivity pattern; The radiator, the first parasitic stub, the second parasitic stub, the second switch branch and the fourth switch branch are used to generate a second directivity pattern, and the first directivity pattern is different from the second directivity pattern.

28. The electronic device according to any one of claims 25 to 27, characterized in that: The distance between the third position and the first side is smaller than the distance between the fourth position and the first side, and the distance L2' between the third position and the first side and the length L2 of the first parasitic branch satisfy: 0≤L2'≤L2×2.5, and / or, The distance between the fifth position and the first side is smaller than the distance between the sixth position and the first side, and the distance L3′ between the fifth position and the first side and the length L3 of the second parasitic branch satisfy: L3≤L3′≤L3×5.

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

1.

30. The electronic device according to any one of claims 25 to 29, characterized in that: The length L2 of the first parasitic branch and the length L1 of the radiator satisfy: L1×0.3≤L2≤L1×0.6, and / or, The length L3 of the second parasitic branch 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, characterized in that: The antenna further comprises a first electronic component and / or a second electronic component; The first parasitic branch includes a fourth connection point and a fifth connection point, the first parasitic branch has a fifth insulating gap between the fourth connection point and the fifth connection point, the first electronic component is coupled and connected between the fourth connection point and the fifth connection point, and / or, The second parasitic branch includes a sixth connection point and a seventh connection point, the second parasitic branch has a sixth insulating gap between the sixth connection point and the seventh connection point, and the second electronic component is coupled and connected between the sixth connection point and the seventh connection point.

32. The electronic device according to any one of claims 25 to 31, characterized in that: 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, characterized in that: The fourth position and the fifth position coincide with each other.

34. The electronic device according to any one of claims 25 to 31, characterized in that: 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, characterized in that The third position and the sixth position coincide with each other.

36. The electronic device according to any one of claims 26 to 35, characterized in that: At the resonance point of the first resonance, the current on the radiator and the current on the first parasitic branch 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 branch are in opposite directions.

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