Foldable electronic device

Abstract

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

Description

[0001] This application claims priority to Chinese Patent Application No. 202311871918.9, filed on December 29, 2023, entitled "A Foldable Electronic Device", the entire contents of which are incorporated herein by reference.

[0002] This application is a divisional application. The original application has the application number 202411651410.2 and the original application date is November 18, 2024. The entire contents of the original application are incorporated herein by reference. Technical Field

[0003] This application relates to the field of wireless communication, and more particularly to a foldable electronic device. Background Technology

[0004] Currently, existing terminal electronic devices utilize the frame as an antenna radiator. For example, in satellite communication systems, the frame radiator is mainly used to form a linearly polarized antenna. When users conduct satellite communication, they need to point the electronic device at the sky in a specific orientation to establish a communication connection with the satellite.

[0005] However, for foldable electronic devices, the antenna's radiation direction may deflect when unfolded, increasing the difficulty of establishing a communication connection with satellites and greatly affecting the user's communication experience. Summary of the Invention

[0006] This application provides a foldable electronic device including an antenna. The antenna consists of a conductive portion of the frame of the foldable electronic device as the main radiator and parasitic branches, which can improve the user's experience when conducting satellite communications.

[0007] In a first aspect, a foldable electronic device is provided, comprising: a first housing, a second housing, and a floor, wherein the first housing includes a first frame, the second housing includes a second frame, the first frame is at least partially spaced from the floor, and the second frame is at least partially spaced from the floor; the first frame includes a first position and a second position, the first position and the second position being located on a first side of the first frame; the second frame includes a third position and a fourth position, the third position being located on a second side of the second frame, wherein, based on the foldable electronic device being in an unfolded state, the first side and the second side are either the top edge or the bottom edge of the foldable electronic device; and a first pivot is located between the first housing and the second housing, and the first pivot is respectively connected to the first housing and the second housing. The device comprises: a rotating connection; and an antenna, the antenna including: a first radiator and a second radiator, the first radiator being a conductive portion of a first frame between the first position and the second position, the second radiator being a conductive portion of a second frame between the third position and the fourth position; a feed circuit, the first radiator including a feed point, the feed circuit being coupled to the feed point; a first tuning circuit, the second radiator including a first connection point, the first tuning circuit being coupled between the first connection point and the floor; wherein, based on the foldable electronic device being in an unfolded state, the first radiator is used to generate a first resonance, the resonant frequency band of the first resonance including a satellite communication frequency band, and wherein, the first radiator, the second radiator, and the first tuning circuit are used to generate the radiation pattern of the antenna.

[0008] According to an embodiment of this application, when the foldable electronic device is in its unfolded state, an electrical signal is fed into the power supply circuit, causing the first radiator to generate a first resonance. The second radiator and the first tuning circuit can be used to reduce the influence of the current on the ground plane on the radiation pattern generated by the antenna. Because the influence of the current on the ground plane on the maximum radiation direction of the antenna's radiation pattern is reduced, the angle between the maximum radiation direction of the antenna's radiation pattern in the unfolded state and the length direction of the electronic device is smaller, facilitating the establishment of a communication connection with a satellite. Therefore, during satellite communication, the foldable electronic device exhibits good communication quality in its unfolded state, effectively improving the user experience. Furthermore, because the influence of the current on the ground plane on the maximum radiation direction of the antenna's radiation pattern is reduced, the antenna's radiation direction does not deflect significantly, thus providing users with better communication quality during satellite communication and effectively improving the user experience.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the first border has a first gap and a second gap at the first position and the second position.

[0010] According to an embodiment of this application, the current corresponding to the first resonance is mainly generated by the first radiator, and the current is mainly concentrated on the first radiator. Multiple current modes are not generated on the ground, making it easy to determine the maximum radiation direction of the antenna's pattern. In one embodiment, this resonance can be understood as being generated by a line DM mode.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the first frame has a first gap at the first position, and the first frame is coupled to the floor at the second position.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, based on the foldable electronic device being in an unfolded state, the maximum radiation direction of the antenna pattern is related to the second radiator and the first tuning circuit.

[0013] According to an embodiment of this application, the first tuning circuit can be used to switch the maximum radiation direction of the antenna-generated pattern. This can be understood as the first tuning circuit reducing the influence of the current on the maximum radiation direction of the antenna-generated pattern by switching the equivalent electrical parameters (e.g., equivalent capacitance, equivalent inductance, or equivalent resistance) between the first connection point and the ground plane, thus bringing the parasitic resonance generated by the second radiator closer to the first resonance. In one embodiment, because the influence of the current on the ground plane on the maximum radiation direction of the antenna-generated pattern is reduced, the maximum radiation direction of the antenna-generated pattern in the unfolded state of the foldable electronic device undergoes a significant deflection. In another embodiment, because the influence of the current on the ground plane on the maximum radiation direction of the antenna-generated pattern is reduced, the angle between the maximum radiation direction of the antenna-generated pattern in the unfolded state of the foldable electronic device and the length direction of the electronic device is smaller, facilitating the establishment of a communication connection with a satellite. Therefore, during satellite communication, the foldable electronic device exhibits good communication quality in the unfolded state, effectively improving the user experience.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, based on the antenna operating in the satellite communication frequency band, when the foldable electronic device is in an unfolded state, the maximum radiation direction of the radiation pattern generated by the antenna is a first direction, and when the foldable electronic device is in a folded state, the maximum radiation direction of the radiation pattern generated by the antenna is a second direction, and the angle between the first direction and the second direction is less than or equal to 30°.

[0015] According to the embodiments of this application, the first direction and the second direction are substantially the same. When the foldable electronic device is conducting satellite communication, changing the state of the foldable electronic device (folded state or unfolded state) will result in good communication quality for the foldable electronic device, effectively improving the user experience.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the first tuning circuit and the second radiator are used to generate a parasitic resonance, wherein the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 200 MHz.

[0017] According to an embodiment of this application, when the foldable electronic device is in the unfolded state, an electrical signal is fed into the power supply circuit. A first radiator is used to generate a first resonance (the resonant frequency band of the first resonance includes the satellite communication frequency band), and a second radiator is used to generate a parasitic resonance. The parasitic resonance is close to the first resonance (the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 200MHz). The antenna can improve the radiation characteristics of the first resonance through the parasitic resonance, thereby providing users with better communication quality when conducting satellite communication and effectively improving the user experience.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the antenna generates an efficiency dip at a first frequency point, and the frequency difference between the resonant frequency of the first resonance and the first frequency point frequency is less than or equal to 200MHz.

[0019] According to an embodiment of this application, the coupling between the second radiator and the first radiator is weak, and it cannot effectively excite parasitic resonances. Therefore, a pit corresponding to the parasitic resonance does not appear clearly in the S-parameter plot. However, since the parasitic resonance is partially excited by current, a noticeable pit will appear in the efficiency curve (e.g., radiation efficiency or system efficiency). For example, if an efficiency pit appears at the first frequency point, then the first frequency point can be considered to correspond to the resonance point of the aforementioned parasitic resonance. In one embodiment, the efficiency (e.g., radiation efficiency or system efficiency) reduction caused by the pit does not exceed 1.5 dB. In another embodiment, the efficiency (e.g., radiation efficiency or system efficiency) reduction caused by the pit does not exceed 1 dB.

[0020] In conjunction with the first aspect, in some implementations of the first aspect, based on the foldable electronic device being in an unfolded state, the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 50MHz.

[0021] According to an embodiment of this application, when the resonant point of the parasitic resonance is close to the resonant point of the first resonance (frequency difference less than 50MHz), the coupling between the first radiator and the second radiator is strong. When the first radiator generates the first resonance, there is a strong current on the second radiator. In one embodiment, at the resonant point of the first resonance, the current generated on the first radiator and the current generated on the second radiator are in the same direction. The current generated on the first radiator and the current generated on the second radiator can form an effect similar to a current array, giving the antenna strong linear polarization characteristics and a higher directivity coefficient. Since gain is related to the directivity coefficient, the antenna gain can be improved due to the higher directivity coefficient, enabling the foldable electronic device to have better satellite communication performance.

[0022] When the resonant point of the parasitic resonance is far from the resonant point of the first resonance (frequency difference greater than or equal to 50MHz and less than or equal to 200MHz), the coupling between the first radiator and the second radiator weakens. When the first radiator generates the first resonance, the current on the second radiator becomes relatively weaker, which can excite a partial longitudinal current on the ground, giving the antenna circular polarization characteristics. In one embodiment, the resonant frequency of the first resonance is higher than the resonant frequency of the parasitic resonance, and the antenna has left-hand circular polarization characteristics. In another embodiment, the resonant frequency of the first resonance is lower than the resonant frequency of the parasitic resonance, and the antenna has right-hand circular polarization characteristics.

[0023] In conjunction with the first aspect, in some implementations of the first aspect, the antenna generates an efficiency dip at a first frequency point, and the frequency difference between the resonant frequency of the first resonance and the first frequency point frequency is less than or equal to 50MHz.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the first radiator is used to generate a primary resonance, the first tuning circuit and the second radiator are used to generate a parasitic resonance, the resonance point of the parasitic resonance is located within the resonant frequency band of the primary resonance, and the primary resonance and the parasitic resonance together form the first resonance.

[0025] According to an embodiment of this application, when the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than 50MHz, it can be understood that the resonant point of the parasitic resonance is located within the resonant frequency band of the first resonance. The first radiator is used to generate the main resonance, and the second radiator and the first tuning circuit are used to generate the parasitic resonance. The main resonance and the parasitic resonance together form the aforementioned first resonance.

[0026] In conjunction with the first aspect, in some implementations of the first aspect, the second border has a third gap and a fourth gap at the third position and the fourth position.

[0027] According to an embodiment of this application, both ends of the second radiator are open, which can form a structure similar to a dipole antenna. In one embodiment, the second radiator can operate in a half-wavelength mode.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, the antenna further includes a second tuning circuit, the second radiator includes a second connection point, and the second tuning circuit is coupled between the second connection point and the floor.

[0029] In conjunction with the first aspect, in some implementations of the first aspect, the second frame has a third gap at the third position, and the second frame is coupled to the floor at the fourth position.

[0030] According to an embodiment of this application, one end of the second radiator is a grounded end and the other end is an open end, which can form a structure similar to an IFA. In one embodiment, the second radiator can operate in a quarter-wavelength mode.

[0031] In conjunction with the first aspect, in some implementations of the first aspect, the second radiator includes a second connection point and a third connection point, the second radiator has a fourth gap between the second connection point and the third connection point, and the second tuning circuit is coupled between the second connection point and the third connection point.

[0032] According to an embodiment of this application, a fourth slot is formed on the second radiator. This fourth slot can be considered as an equivalent capacitance (e.g., a distributed capacitance) on the second radiator, which allows the second radiator to form a metamaterial structure. The second radiator with this metamaterial structure can increase the radiation aperture. After the fourth slot is formed, the electric field is more dispersed, and the dielectric loss near the conductor is reduced, thus effectively improving the antenna's system efficiency and radiation efficiency. By using a second tuning circuit coupled between the second connection point and the third connection point, the equivalent capacitance value of the fourth slot can be adjusted, thereby adjusting the antenna's radiation characteristics (e.g., the resonant frequency).

[0033] Simultaneously, the parasitic resonance of the second radiator can correspond to a quarter-wavelength mode (the second radiator can operate in quarter-wavelength mode). Through the first resonant circuit and the fourth slot, the electrical length of the second radiator can be made greater than three-eighths of the first wavelength. The current on the second radiator is in the same direction (e.g., no reversal), and the electric field between the second radiator and ground does not reverse. The electrical length of the second radiator increases from one-quarter of the first wavelength to more than three-eighths of the first wavelength, but it still operates in quarter-wavelength mode. In this case, the current density on the second radiator is dispersed, and the electric field density between the second radiator and the ground is weakened, thereby reducing conductor loss and dielectric loss caused by the conductors and dielectrics placed around the second radiator, thus improving the antenna's radiation characteristics. The increased radiating aperture of the second radiator effectively improves the antenna's system efficiency and radiation efficiency.

[0034] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the second connection point and the fourth gap is less than or equal to 5 mm, and / or the distance between the third connection point and the fourth gap is less than or equal to 5 mm.

[0035] In conjunction with the first aspect, in some implementations of the first aspect, the second connection point is located between the third position and the fourth gap, and the third connection point is located between the fourth position and the fourth gap; the first connection point is located between the third position and the second connection point, and the distance between the second connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm; or, the first connection point is located between the fourth position and the third connection point, and the distance between the third connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm.

[0036] According to an embodiment of this application, the radiation aperture of the second radiator is adjusted simultaneously by the first tuning circuit and the second tuning circuit to achieve parasitic resonance in the desired frequency band.

[0037] It should be understood that the first connection point can be located at any position on the second radiator, and the embodiments of this application do not impose any restrictions on this. When the length of the second radiator between the first connection point and the second / third connection point is less than or equal to 5mm, the radiating aperture of the second radiator can be better adjusted, thereby improving the radiation characteristics of the antenna.

[0038] In conjunction with the first aspect, in some implementations of the first aspect, the fourth position is located between the second position and the third position, based on the foldable electronic device being in an unfolded state.

[0039] According to an embodiment of this application, the ground end (one end at the fourth position) of the second radiator can be close to the first radiator, and the open end (one end at the third position) can be far away from the first radiator.

[0040] In conjunction with the first aspect, in some implementations of the first aspect, the foldable electronic device may further include a third housing and a second pivot; wherein the second pivot is located between the second housing and the third housing, and the second pivot is rotatably connected to both the second housing and the third housing; or, the second pivot is located between the first housing and the third housing, and the second pivot is rotatably connected to both the first housing and the third housing.

[0041] According to the embodiments of this application, the technical solutions described in the above embodiments can also be applied to foldable electronic devices including three housings.

[0042] In conjunction with the first aspect, in some implementations of the first aspect, the third housing includes a third frame, the third frame being at least partially spaced from the floor, the third frame having a fifth position and a sixth position, the fifth position being located on the third side of the third frame, and based on the foldable electronic device being in an unfolded state, the first side, the second side, and the third side being the same side of the foldable electronic device; the antenna further includes a third radiator and a third tuning circuit, the third radiator being a conductive portion of the third frame between the fifth position and the sixth position, the third radiator including a fourth connection point, and the third tuning circuit being coupled between the fourth connection point and the floor.

[0043] In conjunction with the first aspect, in some implementations of the first aspect, based on the second pivot being located between the second housing and the third housing, the first radiator is used to generate a first resonance; based on the foldable electronic device being in an unfolded state, at the resonance point of the first resonance, the current on the first radiator and the current on the second radiator are in the same direction, and the current on the first radiator and the current on the third radiator are in opposite directions.

[0044] According to an embodiment of this application, at the resonant point where the first radiator generates the first resonance, the current generated on the first radiator and the current generated on the second radiator are in the same direction, while the current generated on the first radiator and the current generated on the third radiator are in opposite directions (the fifth tuning circuit can be used to generate the current in this direction). When the foldable electronic device is in the unfolded state, the reverse current generated on the third radiator can weaken the effect of the current generated on the first radiator and the current generated on the second radiator forming a current array-like effect, thereby reducing the directivity coefficient of the antenna and giving the antenna a wider radiation beam (e.g., a beam with a gain difference of less than 3 dB from the direction of maximum radiation).

[0045] In conjunction with the first aspect, in some implementations of the first aspect, based on the second pivot being located between the first housing and the third housing, the first radiator is used to generate a first resonance; based on the foldable electronic device being in an unfolded state, at the resonance point of the first resonance, the currents on the first radiator, the second radiator, and the third radiator are in the same direction.

[0046] According to an embodiment of this application, at the resonant point where the first radiator generates the first resonance, the currents generated on the first radiator, the second radiator, and the third radiator are in the same direction. The currents generated on the first radiator, the second radiator, and the third radiator can form an effect similar to a current array, giving the antenna strong linear polarization characteristics and a higher directivity coefficient. Since gain is related to directivity coefficient, a higher directivity coefficient can improve the antenna gain, enabling the foldable electronic device to have better satellite communication performance.

[0047] In conjunction with the first aspect, in some implementations of the first aspect, based on the foldable electronic device being in a folded state, the first radiator and the second radiator at least partially overlap in a third direction, wherein the third direction is the thickness direction of the foldable electronic device.

[0048] According to an embodiment of this application, the foldable electronic device is in a folded state, and the first radiator and the second radiator overlap at least partially in a third direction. When the power supply circuit feeds in an electrical signal, the second radiator can couple in more energy, thereby improving the radiation characteristics of the parasitic resonance generated by the second radiator.

[0049] In conjunction with the first aspect, in some implementations of the first aspect, the ratio of the dimension of the floor in the extended direction along the first side when the foldable electronic device is in the unfolded state to that in the folded state is greater than or equal to 1.8 and less than or equal to 2.2.

[0050] In conjunction with the first aspect, in certain implementations of the first aspect, the foldable electronic device performs at least one of the following services in the satellite communication frequency band: receiving and / or sending short messages via satellite, making and / or answering phone calls via satellite, and receiving satellite data. Attached Figure Description

[0051] Figure 1 This is a schematic structural diagram of the foldable electronic device 100 provided in the embodiments of this application.

[0052] Figure 2 This is a schematic structural diagram of the foldable electronic device 100 in its outward-folded state.

[0053] Figure 3 This is a schematic structural diagram of the foldable electronic device 100 in one possible unfolded state.

[0054] Figure 4 This is a schematic structural diagram of a foldable electronic device 100 in one possible folded state.

[0055] Figure 5 This is a schematic structural diagram of a foldable electronic device 100 in one possible partially unfolded state.

[0056] Figure 6 This is a schematic diagram of the common-mode structure of an antenna provided in this application and the corresponding current and electric field distribution.

[0057] Figure 7 This is a schematic diagram of the differential mode structure of another antenna provided in this application and the corresponding current and electric field distribution.

[0058] Figure 8 This 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 this application embodiment.

[0059] Figure 9 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0060] Figure 10 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0061] Figure 11 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0062] Figure 12 This is a schematic diagram of the second radiator 240 provided in the embodiments of this application.

[0063] Figure 13 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0064] Figure 14 These are the S-parameter simulation results of the antenna 200 in the foldable electronic device 100.

[0065] Figure 15 The results are simulation results of the system efficiency of antenna 200 in foldable electronic device 100.

[0066] Figure 16 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided.

[0067] Figure 17The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is less than the resonant frequency of the first resonance.

[0068] Figure 18 It is the radiation pattern of the foldable electronic device 100 in its unfolded state when the resonant frequency of the parasitic resonance is close to the resonant frequency of the first resonance.

[0069] Figure 19 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is greater than the resonant frequency of the first resonance.

[0070] Figure 20 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0071] Figure 21 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided.

[0072] Figure 22 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is less than the resonant frequency of the first resonance.

[0073] Figure 23 It is the radiation pattern of the foldable electronic device 100 in its unfolded state when the resonant frequency of the parasitic resonance is close to the resonant frequency of the first resonance.

[0074] Figure 24 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is greater than the resonant frequency of the first resonance.

[0075] Figure 25 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0076] Figure 26 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0077] Figure 27 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided.

[0078] Figure 28 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is less than the resonant frequency of the first resonance.

[0079] Figure 29 It is the radiation pattern of the foldable electronic device 100 in its unfolded state when the resonant frequency of the parasitic resonance is close to the resonant frequency of the first resonance.

[0080] Figure 30 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is greater than the resonant frequency of the first resonance.

[0081] Figure 31 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0082] Figure 32 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0083] Figure 33 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0084] Figure 34 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided.

[0085] Figure 35 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when the second radiator is installed.

[0086] Figure 36 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0087] Figure 37 yes Figure 36 The radiation pattern of the foldable electronic device 100 in its unfolded state at 2.2 GHz is shown.

[0088] Figure 38 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0089] Figure 39 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0090] Figure 40 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0091] Figure 41 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0092] Figure 42 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0093] Figure 43 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0094] Figure 44This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0095] Figure 45 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application. Detailed Implementation

[0096] The following explains the terminology that may appear in the embodiments of this application.

[0097] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0098] The phrase "within the range" used in this application, unless otherwise specified, includes both endpoints of the range by default. For example, in the range of 1 to 5, it includes the values ​​1 and 5.

[0099] Coupling can be understood as direct coupling and / or indirect coupling. "Coupled connection" can be understood as a direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection," which can be understood as physical contact and electrical conduction between components; it can also be understood as the form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Indirect coupling" can be understood as electrical conduction between two conductors through a gap / non-contact method. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gaps between two conductive components.

[0100] Components / devices: including at least one of lumped components / devices and distributed components / devices.

[0101] Lumped element / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For signals, the characteristics of the components remain constant at all times, regardless of frequency.

[0102] Distributed elements / devices: Unlike lumped elements, if the size of an element is similar to or larger than the wavelength of the circuit's operating frequency, then when a signal passes through the element, the characteristics of each point on the element will vary due to the signal change. In this case, the element as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed element.

[0103] Capacitor: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitor elements; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive components separated by a certain gap.

[0104] Inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductor elements; distributed inductance (or distributed inductance) refers to the equivalent inductance formed through a conductive element of a certain length.

[0105] Radiator: In an antenna, this is the device used to receive / transmit electromagnetic wave radiation. In some cases, the term "antenna" is narrowly defined as a radiator, which converts guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, for radiating and receiving radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via a feed line, where it is converted into electromagnetic wave energy of a specific polarization and radiated in the desired direction. The receiving radiator converts electromagnetic wave energy of a specific polarization from a specific direction in space back into modulated high-frequency current energy, which is then transmitted to the receiver input via a feed line.

[0106] Radiators may include conductors with specific shapes and sizes, such as wires or sheets, and this application does not limit the specific shape. In one embodiment, a wire radiator may be simply referred to as a wire antenna. In one embodiment, a wire radiator may be implemented by a conductive frame, and may also be called a frame antenna. In one embodiment, a wire radiator may be implemented by a support conductor, and may also be called a support antenna. In one embodiment, the wire diameter (e.g., including thickness and width) of the wire radiator, or the radiator of the wire antenna, is much smaller than the wavelength (e.g., the wavelength of the medium) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the wavelength of the medium) (e.g., a length of approximately 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, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, in a dipole antenna, each dipole antenna typically includes two radiating stubs, each fed from the feed end of the radiating stub by a feed section. For example, an inverted-FAntenna (IFA) can be considered as a monopole antenna with an added ground path. An IFA antenna has one feed point and one ground point, and is called an inverted-F antenna because its side view is inverted-F shaped. In one embodiment, the sheet radiator may include a microstrip antenna or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA). In one embodiment, the sheet radiator may be implemented using a planar conductor (e.g., a conductive sheet or conductive coating). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet. In one embodiment, the sheet radiator may include a conductive coating, such as silver paste. The shape of the sheet radiator includes circular, rectangular, and annular shapes, and this 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, wherein the dielectric substrate is disposed between the radiator and the ground plane.

[0107] Radiators may also include slots or gaps formed on a conductor, for example, closed or semi-closed slots or gaps formed on a grounded conductor surface. In one embodiment, a slotted or slit radiator may be simply referred to as a slot antenna or a gap antenna. In one embodiment, the radial dimension (e.g., including width) of the slot or gap of the slot antenna / gap antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), while the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., a length of approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or gap may be simply referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or gap (e.g., an opening added to a closed slot or gap) may be simply referred to as an open slot antenna. In some embodiments, the gap shape is elongated. In some embodiments, the length of the gap is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the gap is approximately an integer multiple of a wavelength (e.g., one dielectric wavelength). In some embodiments, the slot can be fed by transmission lines connected across one or both sides, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a conductive frame grounded at both ends, also known as a frame antenna; in this embodiment, the slot antenna or gap antenna can be viewed as including a linear radiator, the linear radiator being spaced apart from the ground and grounded at both ends, thereby forming a closed or semi-closed slot or gap. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a support conductor grounded at both ends, also known as a support antenna.

[0108] A feed circuit is a combination of all circuits used for receiving and transmitting radio frequency (RF) signals. A feed circuit can include a transceiver and an RF front-end. In some cases, the term "feed circuit" is narrowly interpreted as an RF IC (Radio Frequency Integrated Circuit), which can be considered to include both the RF front-end chip and the transceiver. The feed circuit has the function of converting radio waves (e.g., RF signals) into electrical signals (e.g., digital signals). It is generally considered part of the RF component.

[0109] In some embodiments, the electronic device may also include a test socket (or, RF socket, or RF test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the RF front-end circuitry or the radiator of the antenna. The RF front-end circuitry can be considered as the circuitry coupled between the test socket and the transceiver.

[0110] 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 an electronic device.

[0111] It should be understood that any two feed circuits in the first / second / ...Nth feed circuit of this application can share the same transceiver, for example, by transmitting signals 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, by processing signals through a tuning circuit or amplifier in a radio frequency front-end.

[0112] It should also be understood that the two feed circuits in the first / second / ...Nth feed circuit of this application typically correspond to two RF test sockets in an electronic device.

[0113] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In another embodiment, the matching circuit is coupled between the test mount and the radiator. Typically, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit may include a tuning circuit and / or electronic components, which may be electronic components for switching the coupling connection of the radiator. The matching circuit has impedance matching and / or frequency tuning functions. It is typically considered part of the antenna.

[0114] The grounding / feeding structure may include connectors, such as metal springs, and the radiator is coupled to the ground / feeding circuit via the grounding structure. In some embodiments, the feeding structure may include a transmission line / feeding wire, and the grounding structure may include a grounding wire.

[0115] End / Point: The term "end / point" in the context of an antenna radiator's first end / second end / feed end / ground end / feed point / grounding point / connection point should not be narrowly interpreted as necessarily being a point or end physically disconnected from other radiators. It can also be considered a point or segment on a continuous radiator. In one embodiment, an "end / point" can include a connection / coupling region on the antenna radiator that couples to other conductive structures. For example, a feed end / feed point can be a coupling region on the antenna radiator that couples to a feed structure or feed circuit (e.g., a region facing a portion of the feed circuit). Similarly, a ground end / grounding point can be a connection / coupling region on the antenna radiator that couples to a ground structure or grounding circuit. Open End / Closed End: In some embodiments, open end and closed end are relative to whether or not they are grounded; a closed end is grounded, and an open end is not grounded. In some embodiments, open end and closed end are relative to other conductors; a closed end is electrically connected to other conductors, and an open end is not electrically connected to other conductors. In one embodiment, an open end can also be called a floating end, free end, open end, or open circuit end. In one embodiment, the closed end may also be referred to as the ground end or the short-circuit end. It should be understood that in some embodiments, other conductors can be coupled through the open end to transfer coupled energy (which can be understood as transferring current).

[0116] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution. A closed end or ground end can be understood as a point of high current or low electric field on a radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through a closed end can maintain the current distribution characteristics of the point of high current / low electric field. In one embodiment, opening a slit at or near the closed end (e.g., filling the slit with insulating material) can maintain the current distribution characteristics of the point of high current / low electric field.

[0117] In some embodiments, the understanding of "open terminal" can also be from the perspective of current distribution. An open terminal or a floating terminal can be understood as a point with a small current or a point with a large electric field on the radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through an open terminal can maintain the current distribution characteristics of the point with a small current or a large electric field.

[0118] It should be understood that when an electronic device (e.g., capacitor, inductor, etc.) is coupled at the radiator end of a gap (which, from the perspective of the radiator's structure, is similar to the radiator at the opening of an open or floating end), the radiator end can be a point with a large current / small electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0119] The "floating radiator" mentioned in the embodiments of this application refers to a radiator that is not directly connected to the feed line / feed branch and / or ground line / ground branch, but is fed and / or grounded through indirect coupling.

[0120] It should be understood that "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator may be, for example, a radiator disposed on the inner surface of an insulating back cover.

[0121] The current in the same direction / opposite direction mentioned in the embodiments of this application should be understood as the main current on the same side of the conductor being in the same direction / opposite direction. For example, when a current distributed in the same direction is excited on a conductor that is bent or looped (e.g., the current path is also bent or looped), it should be understood that, for example, the main current excited on the conductors on both sides of a looped conductor (e.g., on the conductors on both sides of a gap), although appearing to be in opposite directions, still falls under the definition of current distributed in the same direction in the embodiments of this application. In one embodiment, current in the same direction on a conductor can mean that the current on that conductor has no reversal point. In one embodiment, current in opposite direction on a conductor can mean that the current on that conductor has at least one reversal point. In one embodiment, current in the same direction on two conductors can mean that the currents on both conductors have no reversal points and flow in the same direction. In one embodiment, current in opposite direction on two conductors can mean that the currents on both conductors have no reversal points and flow in opposite directions. Current in the same direction / opposite direction on multiple conductors can be understood accordingly.

[0122] 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. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, when the antenna / radiator mentioned in this application generates "first / second...resonance," the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to a specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0123] Resonant frequency band: The range of resonant frequencies is the resonant frequency band. The return loss characteristics at any frequency point within the resonant frequency band can be less than -6dB or -5dB.

[0124] Communication band / operating band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna supporting the B40 band operates within the frequency range of 2300MHz to 2400MHz, or in other words, the antenna's operating band includes the B40 band. The frequency range that meets the specifications can be considered the antenna's operating band.

[0125] 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.

[0126] Electrical length: can be the ratio of physical length (i.e., mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. Electrical length can satisfy the following formula: ; Where L is the physical length. The wavelength of the electromagnetic wave.

[0127] Wavelength: or operating wavelength, 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 band (resonant frequency from 1920 MHz to 1980 MHz) is 1955 MHz, then the operating wavelength can be the wavelength calculated using this frequency. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the resonant frequency or a non-center frequency of the operating frequency band.

[0128] It should be understood that the wavelength of a radiation 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 radiation signal (MHz), and the speed of light can be taken as 3 × 10⁸ m / s. The wavelength of a radiation signal in a medium can be calculated as follows: Medium wavelength = (speed of light / ... ) / frequency, where, The wavelength is the relative permittivity of the medium. In the embodiments of this application, the wavelength typically refers to the medium wavelength, which can be the medium wavelength corresponding to the center frequency of the resonant frequency, or the medium wavelength corresponding to the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink band (resonant frequency of 1920 MHz to 1980 MHz) is 1955 MHz, the wavelength can be the medium wavelength calculated using this frequency. Not limited to the center frequency, the "medium wavelength" can also refer to the medium wavelength corresponding to the resonant frequency or a non-center frequency of the operating frequency band. For ease of understanding, the medium wavelength mentioned in the embodiments of this application can be simply calculated using the relative permittivity of the medium filling one or more sides of the radiator.

[0129] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0130] Antenna radiation efficiency refers to the ratio of the power radiated into space by an antenna (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. The active power input to the antenna equals the antenna's input power minus the power loss. Power loss primarily includes return loss power, ohmic loss power of the metal, and / or dielectric loss power. Radiation efficiency measures an antenna's radiation capability; metal loss and dielectric loss are both factors affecting radiation efficiency.

[0131] Those skilled in the art will 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 0dB, the better the efficiency of the antenna.

[0132] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port after passing through the antenna circuit to the transmit power at the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the higher the antenna's radiation efficiency. Conversely, the larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the antenna's radiation efficiency.

[0133] Antenna return loss can be represented by the S11 parameter, which is one of the S-parameters. S11 represents the reflection coefficient, and this parameter characterizes the antenna's transmission efficiency. The S11 parameter is usually negative. The smaller the S11 parameter, the smaller the antenna return loss, the less energy the antenna reflects back, which means more energy actually enters the antenna, and the higher the antenna's system efficiency. Conversely, the larger the S11 parameter, the greater the antenna return loss, and the lower the antenna's system efficiency.

[0134] It should be noted that in engineering, an S11 value of -6dB is generally used as the standard. When the S11 value of an antenna is less than -6dB, the antenna can be considered to be working normally, or the antenna can be considered to have good transmission efficiency.

[0135] Antenna pattern: also known as radiation pattern. It refers to the graph showing the relative field strength (normalized modulus) of the antenna's radiated field as a function of direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular planar patterns passing through the direction of maximum radiation of the antenna.

[0136] Antenna radiation patterns typically have multiple radiating beams. The beam with the highest radiating intensity is called the main lobe, and the remaining beams are called side lobes. Among the side lobes, the side lobe in the opposite direction to the main lobe is also called the back lobe.

[0137] Directivity: Also known as the antenna's directivity, it refers to the ratio of the maximum power density to the average power density on the antenna's radiation pattern at a certain distance from the antenna (far field). It is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of an antenna. The larger the directivity, the more energy the antenna radiates in a particular direction, and the more concentrated the energy radiation is.

[0138] Antenna gain: Characterizes the degree to which an antenna concentrates the radiated input power. Generally, the narrower the main lobe and the smaller the side lobes of the antenna pattern, the higher the antenna gain.

[0139] Antenna polarization: At a given point in space, the electric field intensity E (vector) is a function of time t. As time progresses, the endpoint of the vector periodically traces a trajectory in space. If this 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 elliptical or circular, and when viewed along the propagation direction, it rotates clockwise or right-handed with time, it is called right-hand circular polarization (RHCP); if it rotates counterclockwise or left-handed with time, it is called left-hand circular polarization (LHCP).

[0140] Ground (GND): Generally refers to at least a portion of any grounding layer, ground plane, or grounding metal layer within an electronic device (such as a mobile phone), or at least a portion of any combination of the aforementioned grounding layers, ground planes, or grounding components. "Ground" can be used for grounding components within an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board in an electronic device, or a grounding metal layer formed by a ground plane formed within the frame of the electronic device or a metal film formed beneath 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 or insulating layers such as fiberglass or polymers. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a trace layer, with the trace layer and grounding layer electrically connected via vias. In one embodiment, components such as displays, touchscreens, input buttons, transmitters, processors, memory, batteries, charging circuits, and system-on-chip (SoC) architectures can be mounted on or connected to a circuit board; or electrically connected to trace layers and / or ground layers in the circuit board. For example, a radio frequency source is disposed on a trace layer.

[0141] Any of the aforementioned grounding layers, ground planes, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material may be any of the following: 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, graphite-impregnated cloth, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. Those skilled in the art will understand that grounding layers / ground planes / grounding metal layers may also be made of other conductive materials.

[0142] Grounding: refers to coupling with the aforementioned ground / floor in any way. In one embodiment, grounding can be achieved through physical grounding, such as through a structural component of the mid-frame to achieve a physical ground at a specific location on the frame (or, physical ground). In another embodiment, grounding can be achieved through device grounding, such as through devices like capacitors / inductors / resistors connected in series or parallel (or, device ground).

[0143] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings.

[0144] Figure 1 This is a schematic diagram of the structure of a foldable electronic device 100 provided in an embodiment of this application. The foldable electronic device 100 can be a mobile phone, tablet computer, e-reader, laptop computer, wearable device such as a watch, or other electronic device with folding function. Figure 1 The illustrated embodiment uses a foldable phone as an example.

[0145] refer to Figure 1 The foldable electronic device 100 may include a flexible display screen 110, a first frame 121, a first cover 122, a second frame 123, a second cover 124, and a hinge 125. In some embodiments, the first frame 121, the first cover 122, the second frame 123, and the second cover 124 may form a first housing 126 and a second housing 127 supporting the flexible display screen 110. In other embodiments, at least one of the first cover 122 and the second cover 124 may include a display screen.

[0146] Figure 1The dot matrix pattern in the center 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 its bendability. The display panel of the flexible display screen 110 can be any of the following: liquid crystal display (LCD), organic light-emitting diode (OLED), active-matrix organic light-emitting diode (AMOLED), flex light-emitting diode (FLED), quantum dot light-emitting diode (QLED), etc. This application embodiment does not limit this choice.

[0147] The flexible display screen 110 may include a first display section 111 corresponding to the first housing 126, a second display section 112 corresponding to the second housing 127, and a foldable display section 113 corresponding to the pivot 125. The foldable display section 113 may be connected between the first display section 111 and the second display section 112.

[0148] The first frame 121 may surround the outer periphery of the first cover 122, and at least a portion of the first frame 121 may also surround the outer periphery of the first display portion 111. The first display portion 111 may be arranged parallel to and spaced apart from the first cover 122, and the first display portion 111 and the first cover 122 may be located on opposite sides of the first frame 121. The space between the first display portion 111 and the first cover 122 may be used to house components of the foldable electronic device 100, such as antennas, circuit board assemblies, etc.

[0149] The second frame 123 may surround the outer periphery of the second cover 124, and at least a portion of the second frame 123 may also surround the outer periphery of the second display portion 112. The second display portion 112 may be arranged parallel to and spaced apart from the second cover 124, and the second display portion 112 and the second cover 124 may be located on opposite sides of the second frame 123. The space between the second display portion 112 and the second cover 124 may be used to house components of the foldable electronic device 100, such as antennas, circuit board assemblies, etc.

[0150] In one embodiment provided in this 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 connection method does not have to be an assembly method such as snap-fit, adhesive, welding, riveting, or clearance fit. The connection between the cover and the frame is usually difficult to separate. In another embodiment provided in this 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.

[0151] The frame can at least partially serve as an antenna radiator for transmitting / receiving radio frequency signals. This portion of the frame serving as the radiator can have gaps between it and the rest of the cover, thereby ensuring a good radiation environment for the antenna radiator. In one embodiment, the cover can have a slit at the portion of the frame serving as the radiator to facilitate antenna radiation.

[0152] The antenna of the electronic device 100 can also be disposed within 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 positioned along the frame. For example, the antenna radiator can be positioned close to the frame to minimize the volume occupied by the antenna radiator and to be closer to the outside of the electronic device 100, thereby achieving better signal transmission performance. It should be noted that "positioning the antenna radiator close to the frame" means that the antenna radiator can be placed flush against the frame or close to the frame; for example, there can be a small gap between the antenna radiator and the frame.

[0153] The antenna of electronic device 100 can also be housed within the casing, such as a bracket antenna, millimeter-wave antenna, etc. Figure 1 (Not shown in the image). The clearance of the antenna disposed within the housing can be obtained by a slit / opening on any of the cover, and / or frame, and / or display screen, or by a non-conductive gap / aperture formed between any of them. The clearance setting of the antenna can ensure the radiation performance of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive components within the electronic device 100, through which the antenna radiates signals to the external space. In one embodiment, the antenna can be a flexible printed circuit (FPC) based antenna, a laser-direct-structuring (LDS) based antenna, or a microstrip disk antenna (MDA), etc. In one embodiment, the antenna can also be a transparent structure embedded inside the display screen of the electronic device 100, making the antenna a transparent antenna unit embedded inside the display screen of the electronic device 100.

[0154] The foldable electronic device 100 may also include a printed circuit board (PCB) (not shown). The PCB is disposed within the cavity formed by the cover. The PCB may be made of a flame-retardant material (FR-4) dielectric substrate, a Rogers dielectric substrate, a hybrid dielectric substrate of Rogers and FR-4, etc. Here, FR-4 is a designation for a flame-retardant material grade, and Rogers dielectric substrate is a high-frequency board. Electronic components, such as radio frequency chips, are carried on the PCB. In one embodiment, a metal layer may be disposed on the PCB. This metal layer can be used to ground the electronic components carried on the PCB, or to ground other components, such as bracket antennas, frame antennas, etc. This metal layer may be referred to as a ground plane, grounding plane, or grounding layer. In one embodiment, the metal layer may be formed by etching metal onto the surface of any dielectric substrate in the PCB. In one embodiment, the grounding metal layer may be disposed on the side of the PCB near the flexible display screen 110. In one embodiment, the edge of the PCB may be considered as the edge of its grounding layer. The electronic device 100 may also have other ground planes / grounding planes, as previously described, and will not be repeated here.

[0155] A hinge 125 can connect the first housing 126 and the second housing 127. Under the action of the hinge 125, the first housing 126 and the second housing 127 can move closer to or further away from each other. Correspondingly, the first display portion 111 and the second display portion 112 of the flexible display screen 110 can move closer to or further away from each other, allowing the flexible display screen 110 to be folded or unfolded.

[0156] In one example, the pivot 125 may include a main shaft, a first connecting component, and a second connecting component. The first connecting component may be fixed to the first cover 122, and the second connecting component may be fixed to the second cover 124. The first and second connecting components are rotatable relative to the main shaft. Through the mutual movement of the first and second connecting components, 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.

[0157] Figure 1 The foldable electronic device 100 shown is currently in its unfolded state. In the unfolded state, the angle between the first housing 126 and the second housing 127 can be approximately 180°. The flexible display screen 110 can be positioned as follows: Figure 1 The unfolded state shown.

[0158] Figure 2 This illustrates one possible folded state of the foldable electronic device 100. Figure 2The outward folding state of the foldable electronic device 100 is shown (the outward folding state can be simply referred to as the outward folding state). Figure 2 The outward folding state shown can be, for example, a left-right outward folding state or a top-bottom outward folding state. (The following is in conjunction with...) Figure 1 and Figure 2 This describes one possible folding state of the foldable electronic device 100.

[0159] In this embodiment, the foldable electronic device 100 being in a folded state means that the foldable electronic device 100 is currently bent, and the degree of bending of the foldable electronic device 100 reaches its maximum. At this time, the first cover 122 and the second cover 124 can be arranged approximately parallel, spaced apart from each other, and facing each other, and the distance between the first cover 122 and the second cover 124 is minimal. At least a portion of the first housing 126 and the second housing 127 are housed within the space enclosed 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 sequentially. 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 122 and the second cover 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 considered to be located on different planes.

[0160] Combination Figure 1 and Figure 2 When the foldable electronic device 100 is in the outward-folded state, the first cover 122 and the second cover 124 can approach each other, and the first display unit 111 and the second display unit 112 can approach each other. The first display unit 111, the second display unit 112, and the foldable display unit 113 can form a housing area for accommodating the first cover 122, the second cover 124, and the hinge 125. That is, the first cover 122, the second cover 124, and the hinge 125 can be accommodated in the space between the first display unit 111 and the second display unit 112.

[0161] It should be understood that the foldable electronic device 100 can be folded inward (the inward folded state can be simply referred to as the inward folded state). When the foldable electronic device 100 is in the inward folded state, the first cover 122 and the second cover 124 can be brought close to each other, and the first display unit 111 and the second display unit 112 can be brought close to each other. The first cover 122, the second cover 124, and the hinge 125 can form a housing area for accommodating the first display unit 111, the second display unit 112, and the foldable display unit 113. That is, the first display unit 111, the second display unit 112, and the foldable display unit 113 can be accommodated in the space between the first cover 122 and the second cover 124.

[0162] 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, it occupies a relatively small space; when the foldable electronic device 100 is in the unfolded state, it can display a relatively large screen to increase the user's viewing range.

[0163] The foldable electronic device 100 may also include a third housing 128 and a hinge 129, such as Figure 3 As shown. The hinge 129 can be connected between the third housing 128 and the second housing 127. The third housing 128 and the second housing 127 can be close to or far from each other. As the number of foldable parts of the foldable electronic device 100 increases, while maintaining the same screen size in the unfolded state, the space occupied by the foldable electronic device 100 can be further reduced in the folded state.

[0164] And in Figure 3 The foldable electronic device 100 shown has three foldable parts (first housing 126, second housing 127 and third housing 128), and therefore has three states: 1. unfolded state; 2. folded state; 3. partially unfolded state.

[0165] 1. For example Figure 3 The diagram shows one 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 also be in the unfolded state.

[0166] 2. For example Figure 4 The diagram shows a possible folded state (tri-fold state) of the foldable electronic device 100. In the folded state, the first housing 126 and the second housing 127 rotate along the pivot 125, and the second housing 127 and the third housing 128 rotate along the pivot 129, maximizing the bending degree of the foldable electronic device 100. At this time, the first housing 126, the second housing 127, and the third housing 128 can be considered to be located on different planes.

[0167] It should be understood that, for the sake of a concise discussion, in Figure 4In the illustrated structure, the foldable electronic device 100 is folded in an S-shape (the sides of the foldable electronic device 100 are S-shaped, and the second housing 127 is located between the first housing 126 and the third housing 128). In one embodiment, the foldable electronic device 100 can also be folded in a G-shape (the sides of the foldable electronic device 100 are G-shaped, and the third housing 128 is located between the first housing 126 and the second housing 127). This application does not limit the folding state of the foldable electronic device 100.

[0168] 3. For example Figure 5 The diagram illustrates one 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 pivot 129, causing the third housing 128 to move closer to the second housing 127. At this time, the first housing 126 and the second housing 127 are considered to be on the same plane, while the second housing 127 and the third housing 128 can be considered to be on different planes. In another possible partially unfolded state, the angle between the third housing 128 and the second housing 127 can be approximately 180°. The first housing 126 and the second housing 127 rotate along the pivot 125, causing the first housing 126 to move closer to the second housing 127.

[0169] Figure 1 The electronic device 100 is shown only schematically, and the actual shape, size, and construction of these components are not subject to change. Figure 1 limited.

[0170] It should be understood that in the embodiments of this application, the side where the display screen of the electronic device is located can be considered as the front, the side where the back cover is located as the back, and the side where the frame is located as the side.

[0171] It should be understood that, in the embodiments of this application, when a user holds (typically vertically and facing the screen) an electronic device, the orientation of the electronic device includes a top, bottom, left side, and right side.

[0172] First, by Figure 6 and Figure 7 This application will involve two antenna modes. Among them, Figure 6 This is a schematic diagram of the common-mode structure of an antenna provided in this application and the corresponding current and electric field distribution. Figure 7 This is a schematic diagram of the differential mode structure of another antenna provided in this application and the corresponding current and electric field distribution. Figure 6 and Figure 7 The antenna radiator is open at both ends, and its common-mode and differential-mode modes can be referred to as line common-mode and line differential-mode, respectively.

[0173] It should be understood that the “common-differential mode” or “CM-DM mode” in this application refers to the linear common-mode mode and the linear differential-mode mode generated on the same radiator.

[0174] 1. Wire common mode (CM) mode Figure 6 Figure (a) shows that the radiator of antenna 40 is open at both ends and connected to a feed circuit (not shown) at the middle position 41. In one embodiment, the antenna 40 is fed in a symmetrical feed configuration. The feed circuit can be connected to the middle position 41 of antenna 40 via feed wire 42. It should be understood that symmetrical feed can be understood as one end of the feed circuit being connected to the radiator and the other end being coupled to the ground to achieve grounding, wherein the connection point between the feed circuit and the radiator (feed point) is located at the center of the radiator, which may be, for example, the midpoint of the geometry, or the midpoint of the electrical length (or a certain area within a certain range near the aforementioned midpoint).

[0175] The middle position 41 of the antenna 40 may be, for example, the geometric center of the antenna, or the midpoint of the electrical length of the radiator, such as the connection point between the feed line 42 and the antenna 40, which covers the middle position 41.

[0176] Figure 6 (b) shows the current and electric field distribution of antenna 40. Figure 6 As shown in (b), the current exhibits a reverse distribution on both sides of the middle position 41, for example, a symmetrical distribution; the electric field exhibits a unidirectional distribution on both sides of the middle position 41. Figure 6 As shown in (b), the current at feeder line 42 exhibits a unidirectional distribution. Based on the unidirectional current distribution at feeder line 42, Figure 6 The type of feed shown in (a) can be called a line CM feed. This is based on the fact that the current is distributed in opposite directions on both sides of the connection between the radiator and the feed line 42. Figure 6 The antenna mode shown in (b) can be called the line CM mode (or simply CM mode; for example, for a line antenna, CM mode refers to the line CM mode). Figure 6 The current and electric field shown in (b) can be referred to as the current and electric field of the line CM mode, respectively.

[0177] The current is stronger at the middle position 41 of antenna 40 (the current is strongest near the middle position 41 of antenna 40), and weaker at both ends of antenna 40. Figure 6As shown in (b) of the diagram. The electric field is weaker at the middle position 41 of the antenna 40 and stronger at both ends of the antenna 40.

[0178] 2. Differential mode (DM) like Figure 7 Image (a) shows that the two radiators of antenna 50 have open ends on both sides and are connected to a feed circuit at the middle position 51. In one embodiment, antenna 50 is fed using an anti-symmetrical feed. One end of the feed circuit is connected to one of the radiators via a feed wire 52, and the other end of the feed circuit is connected to the other radiator via a feed wire 52. The middle position 51 can be the geometric center of antenna 50, or the gap formed between the radiators.

[0179] It should be understood that the "center-antisymmetric feeding" mentioned in this application can be understood as the positive and negative poles of the feeding unit being connected to two connection points near the midpoint of the radiator. In one embodiment, the signal amplitudes output by the positive and negative poles of the feeding unit are the same, but the phases are opposite, for example, the phase difference is 180°±10°.

[0180] Figure 7 (b) shows the current and electric field distribution of antenna 50. Figure 7 As shown in (b), the current in the antenna 50 is distributed in the same direction on both sides of the middle position 51, for example, an antisymmetric distribution; the electric field is distributed in opposite directions on both sides of the middle position 51. Figure 7 As shown in (b), the current at feeder line 52 exhibits a reverse distribution. Based on the reverse current distribution at feeder line 52, Figure 7 The type of feed shown in (a) can be called a line DM feed. This is based on the fact that the current is distributed in the same direction on both sides of the connection between the radiator and the feed line 52. Figure 7 The antenna mode shown in (b) can be called line DM mode (or simply DM mode; for example, for a line antenna, DM mode refers to line DM mode). Figure 7 The current and electric field shown in (b) can be referred to as the current and electric field in the line DM mode, respectively. It should be understood that, based on the fact that the current is distributed in the same direction on both sides of the connection between the radiator and the feed line 52, Figure 7 The antenna mode shown in (b) can also be called the half-antenna mode, or the half-wavelength mode, or simply the half-mode.

[0181] In one embodiment, in online DM mode, or half-mode, the current is stronger at the middle position 51 of antenna 50 (the current peak is located near the middle position 51 of antenna 50), and weaker at both ends of antenna 50, such as... Figure 7As shown in (b) of the diagram. The electric field is weaker at the middle position 51 of the antenna 50 and stronger at both ends of the linear antenna 50.

[0182] It should be understood that an antenna radiator can be considered as a metal structural component that generates radiation, and its quantity can be one, such as... Figure 6 As shown, or, it can be two items, such as Figure 7 As shown, adjustments can be made according to actual design or production needs. For example, for the line CM mode, it can also be as follows: Figure 7 The diagram illustrates the use of two radiators, positioned opposite each other with a gap between them. Symmetrical feeding is employed at the two ends closest to each other; for example, feeding the same feed source signal into both ends of the two radiators can achieve the same result as... Figure 6 The antenna structure shown achieves a similar effect. Correspondingly, for line DM mode, it can also be done as follows... Figure 6 The diagram illustrates a radiator with two feed points positioned at its center, using an anti-symmetrical feeding method. For example, by feeding signals of the same amplitude but opposite phase to the two symmetrical feed points on the radiator, a signal similar to [the one described above] can be obtained. Figure 7 The antenna structure shown has a similar effect.

[0183] 3. Line CM-DM mode The above Figure 6 and Figure 7 The diagrams show how different feeding methods generate line CM mode and line DM mode when both ends of the radiator are open.

[0184] When the antenna is fed asymmetrically (the feed point is off-center from the radiator, including side-feed or offset feed), or when the grounding point of the radiator (coupled to the ground) is asymmetrical (off-center from the radiator), the antenna can simultaneously generate a first resonance and a 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, with current and electric field distributions as follows: Figure 6 As shown in (b) above. The second resonance corresponds to the line DM mode, and the current and electric field distribution is as follows. Figure 7 As shown in (b) of the diagram.

[0185] Figure 8 This 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 this application embodiment.

[0186] It should be understood that, for the sake of brevity, the foldable device 100 is described using only the first housing 201 and the second housing 202 as an example. The first housing 201 and the second housing 202 can be rotatably connected to the rotating shaft 203.

[0187] like Figure 8As shown in (a), in the folded state, the maximum radiation direction of the radiation pattern generated by the antenna 200 is the top direction of the foldable electronic device 100 (e.g., the y direction).

[0188] like Figure 8 As shown in (b), in the deployed state, due to the increased 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 y direction) (e.g., deflected in the x direction).

[0189] When users conduct satellite communication, the electronic device needs to be pointed at the satellite in a specific orientation to achieve satellite alignment (establish a communication connection with the satellite). When the foldable electronic device 100 is in the unfolded state, the maximum radiation direction of the radiation pattern generated by the antenna 200 deviates from the top direction of the foldable electronic device 100 (e.g., the y-direction), requiring the user to adjust the posture of holding the foldable electronic device 100 to establish a communication connection with the satellite. Secondly, the maximum radiation direction of the radiation pattern generated by the antenna 200 differs between the folded and unfolded states of the foldable electronic device 100. Therefore, when users switch the state of the foldable electronic device 100 during satellite communication, if they do not change the posture of holding the foldable electronic device 100, the communication quality deteriorates. To improve communication quality, users need to adjust the posture of holding the foldable electronic device 100 so that the maximum radiation direction is pointed at the satellite, resulting in significant inconvenience in use.

[0190] When the foldable electronic device 100 is in its unfolded state, the maximum radiation direction of the radiation pattern generated by the antenna 200 is basically pointed towards the top of the electronic device 100 (e.g., the y-direction), for example, at an angle within a predetermined angle with the y-direction. This allows for convenient establishment of a communication connection with a satellite via the foldable electronic device 100 during satellite communication. Furthermore, if the maximum radiation direction of the radiation pattern generated by the antenna 200 is the same in both the folded and unfolded states (e.g., towards the top of the foldable electronic device 100 (e.g., the y-direction)), then when changing the state of the foldable electronic device 100 (folded or unfolded), the user does not need to change their posture while holding the foldable electronic device 100.

[0191] This application provides a foldable electronic device, which includes an antenna. The antenna consists of a conductive portion of the frame of the foldable electronic device as the main radiator and parasitic branches, which can improve the user's experience when conducting satellite communication.

[0192] Figure 9 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0193] like Figure 9 As shown, the foldable electronic device 100 may include a first housing 201, a second housing 202, and a floor 300.

[0194] It should be understood that the floor 300 described in this application embodiment has different dimensions 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. The width can be understood as the dimension of the floor 300 extending along the top edge (top edge) or bottom edge (bottom edge) of the foldable electronic device 100. In one embodiment, when the foldable electronic device 100 is in an unfolded state, the length of the foldable electronic device 100 remains unchanged while 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.

[0195] The width and length of floor 300 can be understood as the dimensions of the equivalent floor formed by all metal layers or metal parts that can be equivalent to floor (e.g., metal layers in the middle plate, metal layers in the PCB, metal layers in the display screen, etc.) in the length extension direction and the width extension direction.

[0196] The first housing 201 includes a first frame 210, at least a portion of which is spaced apart from the floor 300. The second housing 202 includes a second frame 220, at least a portion of which is spaced apart from the floor 300.

[0197] The first border 210 includes a first position 211 and a second position 212. The first border 210 has a first gap and a second gap respectively at the first position 211 and the second position 212.

[0198] In one embodiment, the width of the first gap / second gap is greater than or equal to 0.1 mm and less than or equal to 2 mm. It should be understood that the width of the gaps opened on the frame in this embodiment can all be within the above range.

[0199] The second frame 220 includes a third position 213 and a fourth position 214. The second frame 220 has a third slit at the third position 213. In one embodiment, the second frame 220 is coupled to the floor 300 at the fourth position 214. In one embodiment, the foldable electronic device 100 is in an unfolded state, and the fourth position 214 is located between the second position 212 and the third position 213.

[0200] It should be understood that in this embodiment, the coupling connection is only described using electrical connection as an example. In actual production or design, it can also be achieved through indirect coupling, which will not be elaborated upon for the sake of brevity. Similarly, for the sake of brevity, this embodiment only uses the example of the fourth position 214 being located between the second position 212 and the third position 213. In actual production or design, the third position 213 can also be located between the second position 212 and the fourth position 214.

[0201] The first position 211 and the second position 212 can be located on the first side of the first frame 210, and the third position 213 can be located on the second side of the second frame 220. In one embodiment, the fourth position 214 can be located on the second side of the second frame 220. When the foldable electronic device 100 is in the unfolded state, the first side and the second side can be the same side of the foldable electronic device 100, for example, the top side or the bottom side. In one embodiment, the ratio of the dimension of the floor 300 in the unfolded state to the dimension of the foldable electronic device 100 in the folded state along the extension direction of the first side (the width of the foldable electronic device 100) is greater than or equal to 1.8 and less than or equal to 2.2.

[0202] The foldable electronic device 100 may further include a hinge 203. The hinge 203 is located between the first housing 201 and the second housing 202, and is rotatably connected to both the first housing 201 and the second housing 202, allowing the first housing 201 and the second housing 202 to rotate relative to each other. In one embodiment, the floor 300 may include a first portion and a second portion, the first portion being located within the first housing 201 and the second portion being located within the second housing 202, and the first portion and the second portion being connected via the hinge 203.

[0203] It should be understandable that, Figure 9In the foldable electronic device 100 shown, a pivot 203 is directly connected to a first housing 201 and a second housing 202, allowing the first housing 201 and the second housing 202 to rotate relative to each other. Furthermore, "pivot 203 is rotatably connected to the first housing 201 and the second housing 202" includes the case where the pivot 203 can be rotatably connected to the first or second housing via one or more second pivots and one or more intermediate housings. For example, in one embodiment, the foldable electronic device 100 may further include a first pivot and a second pivot, and one or more intermediate housings located between the first pivot and the second pivot. The first pivot is located between the first housing 201 and the intermediate housings, and is rotatably connected to both the first housing 201 and the intermediate housings, allowing them to rotate relative to each other. The second pivot is located between the intermediate housings and the second housing 202, and is rotatably connected to both the intermediate housings and the second housing 202, allowing them to rotate relative to each other.

[0204] The foldable electronic device 100 may also include an antenna 200. The antenna 200 includes a first radiator 230, a second radiator 240, a feed circuit 250, and a first tuning circuit 261.

[0205] The first radiator 230 is the conductive portion of the first frame 210 between the first position 211 and the second position 212. The second radiator 240 is the conductive portion of the second frame 220 between the third position 213 and the fourth position 214.

[0206] The first radiator 230 includes a feed point 251, and the feed circuit 250 is coupled to the feed point 251.

[0207] The second radiator 240 includes a first connection point 221, and a first tuning circuit 261 is coupled between the first connection point 221 and the floor 300.

[0208] The operating frequency band of antenna 200 may include the satellite communication frequency band. When the foldable electronic device 100 is in its unfolded state, the first radiator 230 is used to generate a first resonance, the resonant frequency band of which includes the satellite communication frequency band. Satellite communication includes at least one of the following communication services: satellite receiving and / or sending short messages (also known as short messages), satellite calling and / or answering telephone calls, and satellite data (e.g., internet access).

[0209] In one embodiment, the satellite communication frequency band may include a portion of the frequency band in the Tiantong satellite system, specifically the transmitting frequency band (1980MHz-2010MHz) and receiving frequency band (2170MHz-2200MHz) within the Tiantong satellite system. In another embodiment, the satellite communication frequency band may include a portion of the frequency band in the BeiDou satellite system, specifically the transmitting frequency band (1610MHz-1626.5MHz) and receiving frequency band (2483.5MHz-2500MHz) within the BeiDou satellite system. In yet another embodiment, the satellite communication frequency band may include a portion of the frequency band in a low-Earth orbit (LEO) satellite system, specifically the transmitting frequency band (2500MHz-2520MHz) and receiving frequency band (2670MHz-2690MHz) within the LEO satellite system. Alternatively, it can be applied to other satellite communication systems, and this embodiment does not limit the scope of the application.

[0210] In one embodiment, when the antenna 200 operates in the Tiantong satellite system (the operating frequency band of the antenna 200 includes at least a portion of the frequency bands in the Tiantong satellite system), the foldable electronic device 100 can perform voice communication via 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 a portion of the frequency bands in the BeiDou satellite system), the foldable electronic device 100 can send or receive short messages and images via the antenna 200.

[0211] The first radiator 230, the second radiator 240, and the first tuning circuit 261 are used to generate the radiation pattern of the antenna. In one embodiment, the maximum radiation direction of the antenna 200's radiation pattern is related to the second radiator 240 and the first tuning circuit 261.

[0212] It should be understood that when the foldable electronic device 100 is in the unfolded state, the feeding circuit 250 feeds in an electrical signal, the first radiator 230 generates a first resonance, and the second radiator 240 and the first tuning circuit 261 can be used to reduce the influence of the current on the ground plane 300 on the radiation pattern generated by the antenna. Because the influence of the current on the ground plane 300 on the maximum radiation direction of the antenna radiation pattern is reduced, the angle between the maximum radiation direction of the radiation pattern generated by the antenna 200 when the foldable electronic device 100 is in the unfolded state and the length direction (e.g., the y-direction) of the foldable electronic device 100 is smaller, facilitating the establishment of a communication connection with a satellite. Therefore, during satellite communication, the foldable electronic device 100 has good communication quality in the unfolded state, effectively improving the user experience. Furthermore, because the influence of the current on the ground plane 300 on the maximum radiation direction of the antenna radiation pattern is reduced, the radiation direction of the antenna 200 does not deflect significantly, thus providing users with better communication quality during satellite communication and effectively improving the user experience.

[0213] Meanwhile, the first resonance is generated by the line DM mode described in the above embodiment. Since the current generated by the line DM mode is mainly generated by the first radiator 230, and the current is mainly concentrated on the first radiator 230, multiple current modes will not be generated on the ground 300, making it easy to determine the maximum radiation direction of the radiation pattern generated by the antenna 200.

[0214] Furthermore, in line CM mode, the transverse modes of the ground plane can be excited (accounting for more than the longitudinal modes), 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 line CM mode are relatively low. In contrast, in line DM mode, the antenna radiation is mainly generated by the radiator, and the system efficiency and radiation efficiency of line DM mode are better than those of line CM mode.

[0215] In one embodiment, the foldable electronic device 100 is in an unfolded state, and the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 200 MHz, so that the current on the floor 300 has less influence on the maximum radiation direction of the radiation pattern generated by the antenna 200.

[0216] It should be understood that the frequency difference described in the embodiments of this application can be interpreted as the absolute value of the frequency difference between the two. In one embodiment, the resonant frequency of the first resonance may be higher than the resonant frequency of the parasitic resonance. In another embodiment, the resonant frequency of the first resonance may be lower than the resonant frequency of the parasitic resonance.

[0217] It should be understood that when the foldable electronic device 100 is in the unfolded state, the power supply circuit 250 feeds in an electrical signal, the first radiator 230 generates a first resonance (the resonant frequency band of the first resonance includes the satellite communication frequency band), and the second radiator 240 generates a parasitic resonance. The parasitic resonance is close to the first resonance (the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 200MHz). The antenna 200 can enhance the radiation characteristics of the first resonance through the parasitic resonance, thereby providing users with better communication quality when conducting satellite communication and effectively improving the user experience.

[0218] In one embodiment, the maximum radiation direction of the radiation pattern generated by the antenna 200 when the foldable electronic device 100 is in the unfolded state is the first direction, and the maximum radiation direction of the radiation pattern generated by the antenna 200 when the foldable electronic device 100 is in the folded state is the second direction. The fact that the maximum radiation directions of the radiation patterns generated by the antenna 200 in both the folded and unfolded states are approximately the same can be understood as the angle between the first and second directions being less than or equal to 30°.

[0219] It should be understood that the first and second directions are roughly the same. When the foldable electronic device 100 is conducting satellite communication, changing the state of the foldable electronic device 100 (folded state or unfolded state) does not require the user to change the posture of holding the foldable electronic device 100, which effectively improves the user experience.

[0220] In one embodiment, when the foldable electronic device 100 is in the unfolded state, the first tuning circuit 261 can be used to switch the maximum radiation direction of the radiation pattern generated by the antenna 200.

[0221] It should be understood that the first tuning circuit 261 can be used to switch the maximum radiation direction of the radiation pattern generated by the antenna 200. This can be understood as the first tuning circuit 261 can switch the equivalent electrical parameters (e.g., equivalent capacitance, equivalent inductance, or equivalent resistance) between the first connection point 221 and the ground 300 to make the parasitic resonance generated by the second radiator 240 closer to the first resonance, thereby reducing the influence of the current on the ground 300 on the maximum radiation direction of the radiation pattern generated by the antenna 200. Because the influence of the current on the ground 300 on the maximum radiation direction of the radiation pattern generated by the antenna 200 is reduced, the angle between the maximum radiation direction of the radiation pattern generated by the antenna 200 when the foldable electronic device 100 is in the unfolded state and the length direction (e.g., the y-direction) of the foldable electronic device is smaller, facilitating the establishment of a communication connection with a satellite. Therefore, during satellite communication, the foldable electronic device 100 has good communication quality in the unfolded state, effectively improving the user experience. Furthermore, by reducing the impact of the current on the floor 300 on the maximum radiation direction of the antenna pattern, the maximum radiation direction of the antenna pattern generated by the antenna 200 is approximately the same whether the foldable electronic device 100 is in the folded or unfolded state. Therefore, when conducting satellite communication, changing the state of the foldable electronic device 100 (folded or unfolded) does not require the user to change their posture while holding the foldable electronic device 100, effectively improving the user experience.

[0222] In one embodiment, the foldable electronic device 100 is in an unfolded state, and the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than 50MHz.

[0223] It should be understood that when the resonant point of the parasitic resonance is close to the resonant point of the first resonance (frequency difference less than 50MHz), the coupling between the first radiator 230 and the second radiator 240 is strong. When the first radiator 230 generates the first resonance, there is a strong current on the second radiator 240. In one embodiment, at the resonant point of the first resonance, the current generated on the first radiator 230 and the current generated on the second radiator 240 are in the same direction. The current generated on the first radiator 230 and the current generated on the second radiator 240 can form an effect similar to a current array, giving the antenna 200 strong linear polarization characteristics and a higher directivity coefficient. Since gain is related to the directivity coefficient, the gain of the antenna 200 can be increased due to the higher directivity coefficient, giving the foldable electronic device 100 better satellite communication performance.

[0224] Meanwhile, when the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than 50MHz, it can be understood that the resonant point of the parasitic resonance is located within the resonant frequency band of the first resonance. The first radiator 230 is used to generate the main resonance, and the second radiator 240 and the first tuning circuit 261 are used to generate the parasitic resonance. The main resonance and the parasitic resonance together form the aforementioned first resonance.

[0225] In one embodiment, the foldable electronic device 100 is in an unfolded state, and the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is greater than or equal to 50MHz and less than or equal to 200MHz.

[0226] It should be understood that when the resonant point of the parasitic resonance is far from the resonant point of the first resonance (frequency difference greater than or equal to 50MHz and less than or equal to 200MHz), the coupling between the first radiator 230 and the second radiator 240 weakens. When the first radiator 230 generates the first resonance, the current on the second radiator 240 becomes relatively weaker, which can excite a partial longitudinal current on the ground 300, giving the antenna 200 circular polarization characteristics. In one embodiment, the resonant frequency of the first resonance is higher than the resonant frequency of the parasitic resonance, and the antenna 200 has left-hand circular polarization characteristics. In another embodiment, the resonant frequency of the first resonance is lower than the resonant frequency of the parasitic resonance, and the antenna 200 has right-hand circular polarization characteristics.

[0227] It should be understood that in this embodiment, the coupling between the second radiator 240 and the first radiator 230 is weak, and the parasitic resonance cannot be effectively excited. Therefore, a pit corresponding to the parasitic resonance does not appear clearly in the S-parameter plot. However, since the parasitic resonance is partially excited by current, a noticeable pit will appear in the efficiency curve (e.g., radiation efficiency or system efficiency). For example, if an efficiency pit appears at the first frequency point, then the first frequency point can be considered to correspond to the resonance point of the parasitic resonance described above. In one embodiment, the efficiency (e.g., radiation efficiency or system efficiency) reduction caused by the pit does not exceed 1.5 dB. In another embodiment, the efficiency (e.g., radiation efficiency or system efficiency) reduction caused by the pit does not exceed 1 dB.

[0228] In one embodiment, the foldable electronic device 100 is in a folded state, and the first radiator 230 and the second radiator 240 are arranged adjacent to each other in a third-direction upward direction (e.g., no other conductor is disposed between the first radiator 230 and the second radiator 240), such as Figure 10 As shown. In one embodiment, the first slit / second slit of the first frame 210 is aligned with the third slit of the second frame 220 to improve the aesthetics of the foldable electronic device 100.

[0229] Here, the third direction can be understood as the thickness direction of the foldable electronic device 100, or, in the unfolded state, the direction perpendicular to the display screen, such as the z-direction.

[0230] It should be understood that, in the embodiments of this application, alignment can be understood as the two gaps at least partially overlapping in a third direction. When the two gaps completely overlap in a third direction, the radiation characteristics of the parasitic resonance generated by the second radiator are optimal.

[0231] In one embodiment, the foldable electronic device 100 is in a folded state, and the parasitic resonance can also be used to improve the radiation characteristics of the first resonance (e.g., radiation efficiency and system efficiency).

[0232] In one embodiment, the foldable electronic device 100 is in a folded state, and the first radiator 230 and the second radiator 240 at least partially overlap in the third direction.

[0233] It should be understood that when the foldable electronic device 100 is in a folded state, the first / second slit of the first frame 210 is aligned with the third slit of the second frame 220. When the power supply circuit 250 feeds in an electrical signal, the third slit can couple more energy through the electric field at the slit of the first frame 210, thereby enhancing the radiation characteristics of the parasitic resonance generated by the second radiator 240.

[0234] In one embodiment, the foldable electronic device 100 is in a folded state, and the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 200 MHz, so that the antenna 200 has better radiation characteristics (e.g., radiation efficiency and system efficiency).

[0235] In one embodiment, the foldable electronic device 100 is in a folded state, and at the resonant point of the first resonance, the current on the first radiator 230 and the current on the second radiator 240 are in the same direction.

[0236] In one embodiment, the fourth position 214 may be located on the second side of the second frame 220. In one embodiment, the fourth position 214 may be located between the third position 213 and the pivot 203, with the third gap aligned with the second gap. In one embodiment, the third position 213 may be located between the fourth position 214 and the pivot 203, with the third gap aligned with the first gap.

[0237] In one embodiment, the fourth position 214 can be located on the third side of the second border 220, where the second and third sides intersect at an angle, such as... Figure 11 As shown. In one embodiment, the third gap is aligned with the first gap.

[0238] In one embodiment, the first tuning circuit 261 is a circuit that includes a switch, such as... Figure 12 As shown in (a) of the diagram. The switch can be used to switch electronic components coupled to the first connection point 221 with different resistance, capacitance, or inductance values ​​when different circuit states are being used. The switch can be electrically connected between the electronic component and the first connection point 221, or between the electronic component and the ground plane 300. Alternatively, the switch can be in an open state, preventing the electronic component from being coupled to the first connection point 221. Alternatively, the switch can directly couple the ground plane 300 to the first connection point 221, without any electronic component between the ground plane 300 and the first connection point 221.

[0239] In one embodiment, the first tuning circuit 261 does not include a switch and may be a circuit formed by cascading multiple electronic components, such as... Figure 12 As shown in (b) of the diagram. The first tuning circuit 261 can have different equivalent capacitance or equivalent inductance values ​​at different frequencies.

[0240] It should be understood that the tuning circuits in the embodiments of this application can all be understood with reference to the above description, and for the sake of brevity, they will not be described in detail.

[0241] In one embodiment, the length of the conductor portion of the second frame between the first connection point 221 and the third position 213 is less than or equal to 5 mm.

[0242] It should be understood that since the third position 213 has a third gap, there is a strong electric field at the third gap. When the first connection point 221 is close to the third gap, the first tuning circuit 261 has better tuning characteristics.

[0243] In one embodiment, the first frame 210 includes a fifth position 215. The first frame 210 is coupled to the floor 300 at the fifth position 215, as shown below. Figure 13 As shown. Antenna 200 may also include a third radiator 260. In one embodiment, the third radiator 260 may generate a second resonance to enhance the radiation characteristics (e.g., radiation efficiency) of the first resonance.

[0244] In one embodiment, the resonant frequency of the second resonance is higher than that of the first resonance.

[0245] In one embodiment, the third radiator 260 can also be used to generate a second resonance.

[0246] It should be understood that in the above embodiments, only the first radiator 230 is used as the main radiating branch (including the radiator with the feed point). In one embodiment, the third radiator 260 may also be fed to generate a second resonance. In one embodiment, the feed point of the first radiator 230 can be used to feed radio frequency signals in the transmit band of the satellite communication band. The feed point of the third radiator 260 can be used to feed radio frequency signals in the receive band of the satellite communication band.

[0247] Figure 14 and Figure 15 yes Figure 13 The simulation results of the foldable electronic device 100 in its unfolded state are shown. Figure 14 These are the S-parameter simulation results of the antenna 200 in the foldable electronic device 100. Figure 15 The results are simulation results of the system efficiency of antenna 200 in foldable electronic device 100.

[0248] It should be understood that, Figure 14 and Figure 15 The simulation results shown include those when the antenna 200 does not include the second radiator 240, and those when the antenna includes the second radiator 240 and the frequency of the parasitic resonance is less than the frequency of the first resonance, the frequency of the parasitic resonance is close to the frequency of the first resonance, and the frequency of the parasitic resonance is greater than the frequency of the first resonance.

[0249] like Figure 14As shown, antenna 200 resonates near 2.2 GHz and 2.6 GHz. The resonance near 2.2 GHz corresponds to the first resonance in the above embodiment, and the resonance near 2.6 GHz corresponds to the second resonance in the above embodiment.

[0250] It should be understood that since the first radiator and the third radiator are located in the first housing and the second radiator is located in the second housing, the coupling between the second radiator and the first radiator is relatively weak, and the parasitic resonance generated by the second radiator has a weak influence on the S-parameters of the first resonance (not shown in the S-parameter curve).

[0251] like Figure 15 As shown, the system efficiency curve did not show a dent when the second radiator 240 was not set.

[0252] After the second radiator 240 is set, adjusting the electrical parameters of the second radiator (e.g., the equivalent capacitance or equivalent inductance of the tuning circuit) can make the resonant frequency of the parasitic resonance (the pit of system efficiency) less than, closer to, or greater than the resonant frequency of the first resonance.

[0253] Figures 16 to 19 yes Figure 13 The radiation pattern of the foldable electronic device 100 in its unfolded state at 2.2 GHz is shown. Figure 16 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided. Figure 17 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is less than the resonant frequency of the first resonance. Figure 18 It is the radiation pattern of the foldable electronic device 100 in its unfolded state when the resonant frequency of the parasitic resonance is close to the resonant frequency of the first resonance. Figure 19 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is greater than the resonant frequency of the first resonance.

[0254] like Figure 16 As shown, without the second radiator, in the unfolded state of the foldable electronic device, the current on the floor affects the maximum radiation direction of the antenna pattern, causing the maximum radiation direction to deviate from the top direction (e.g., the y-direction). Without the second radiator, the antenna's directivity is 3.72 dBi.

[0255] After installing the second radiator, the foldable electronic device, in its unfolded state, reduces the influence of the current on the floor 300 on the maximum radiation direction of the antenna pattern, ensuring that the maximum radiation direction does not deviate from the top direction (e.g., the y-direction), and the radiated energy is more concentrated. Figures 17 to 19As shown.

[0256] When the resonant frequency of the parasitic resonance is lower than that of the first resonance, the antenna's directivity is 4.16 dBi. When the resonant frequency of the parasitic resonance is close to that of the first resonance, the antenna's directivity is 5.08 dBi. When the resonant frequency of the parasitic resonance is higher than that of the first resonance, the antenna's directivity is 4.64 dBi.

[0257] It should be understood that a higher directivity coefficient indicates that the antenna radiates a greater proportion of energy in a particular direction, and the energy radiation is more concentrated. When the antenna's directivity coefficient is high, the proportion of energy radiated by the antenna in the direction of maximum radiation is higher, and the antenna has higher gain in that direction, enabling electronic devices to have good communication performance.

[0258] Figure 20 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0259] like Figure 20 As shown, the second border 220 has a fourth gap at the fourth position 214.

[0260] It should be understood that Figure 20 The antenna 200 shown is Figure 9 The only difference in the antenna 200 shown is that a fourth slot is opened at the fourth position 214. Figure 9 In the antenna 200 shown, the second frame 220 is coupled to the ground plane 300 at the fourth position 214. One end of the second radiator 240 is grounded, and the other end is open, forming a structure similar to an IFA. The second radiator 240 can operate in quarter-wavelength mode. Figure 20 In the antenna 200 shown, the second frame 220 has a fourth slot at the fourth position 214, and both ends of the second radiator 240 are open, which can form a structure similar to a dipole. The second radiator 240 can operate in half-wavelength mode.

[0261] In one embodiment, the antenna 200 further includes a second tuning circuit 262. The second radiator 240 includes a second connection point 222, and the second tuning circuit 262 is coupled between the second connection point 222 and the floor 300.

[0262] It should be understood that the second radiator 240 is coupled to the first tuning circuit 261 and the second tuning circuit 262. In one embodiment, the length of the conductor portion of the second frame between the second connection point 222 and the fourth position 214 is less than or equal to 5 mm.

[0263] In one embodiment, when the foldable electronic device 100 is in a folded state, the third gap is aligned with the first gap, and the fourth gap is aligned with the second gap.

[0264] It should be understood that since the fourth position 214 has a fourth gap, there is a strong electric field at the fourth gap. When the second connection point 222 is close to the fourth gap, the second tuning circuit 262 has better tuning characteristics.

[0265] For the sake of brevity, Figure 20 The antenna 200 shown is Figure 9 The similar parts of the antenna 200 shown will not be described in detail, such as the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; and the relative positions of the first radiator 230 and the second radiator 240.

[0266] Figures 21 to 24 yes Figure 20 The radiation pattern of the foldable electronic device 100 in its unfolded state at 2.2 GHz is shown. Figure 21 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided. Figure 22 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is less than the resonant frequency of the first resonance. Figure 23 It is the radiation pattern of the foldable electronic device 100 in its unfolded state when the resonant frequency of the parasitic resonance is close to the resonant frequency of the first resonance. Figure 24 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is greater than the resonant frequency of the first resonance.

[0267] like Figure 21 As shown, without the second radiator, in the unfolded state of the foldable electronic device, the current on the floor affects the maximum radiation direction of the antenna's radiation pattern, causing the maximum radiation direction to deviate from the top direction (e.g., the y-direction). Without the second radiator, the antenna's directivity is 3.53 dBi.

[0268] After installing the second radiator, the foldable electronic device, in its unfolded state, reduces the influence of the current on the floor 300 on the maximum radiation direction of the antenna pattern, ensuring that the maximum radiation direction does not deviate from the top direction (e.g., the y-direction), and the radiated energy is more concentrated. Figures 22 to 24 As shown.

[0269] When the resonant frequency of the parasitic resonance is lower than that of the first resonance, the antenna's directivity is 4.83 dBi. When the resonant frequency of the parasitic resonance is close to that of the first resonance, the antenna's directivity is 4.73 dBi. When the resonant frequency of the parasitic resonance is higher than that of the first resonance, the antenna's directivity is 4.86 dBi.

[0270] Figure 25 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0271] like Figure 25 As shown, the second frame 220 has a third gap at the third position 213. The second frame 220 is coupled to the floor 300 at the fourth position 214. The second frame 220 has a fourth gap between the third position 213 and the fourth position 214.

[0272] It should be understood that the second radiator 240 is electrically connected to the ground 300 at the first connection point 221 via the first tuning circuit 261. This allows the current in the second radiator 240 to be shunt in the region near the first connection point 221 when the second radiator 240 exhibits parasitic resonance. This shunt in the region near the first connection point 221 disperses the current density in the second radiator 240. In one embodiment, the more dispersed current distribution in the second radiator 240 reduces conductor losses. In another embodiment, the more dispersed current distribution in the second radiator 240 increases the radiating aperture of the second radiator 240. The reduced conductor losses in the second radiator 240 and the increased radiating aperture of the antenna 200 improve the system efficiency and radiation efficiency of the antenna.

[0273] Simultaneously, a fourth slot is formed on the second radiator 240. This fourth slot can be considered as an equivalent capacitance (e.g., distributed capacitance) on the second radiator 240, which allows the second radiator 240 to form a metamaterial structure. The second radiator 240 with this metamaterial structure can increase the radiation aperture. After the fourth slot is formed, the electric field is more dispersed, and the dielectric loss near the conductor is reduced, thus effectively improving the system efficiency and radiation efficiency of the antenna 200. The equivalent capacitance value of the fourth slot can be adjusted by the second tuning circuit 262 coupled between the second connection point 222 and the third connection point 223, thereby adjusting the radiation characteristics (e.g., the resonant frequency) of the antenna 200.

[0274] It should be understood that Figure 25 The antenna 200 shown is Figure 9 The antenna 200 shown differs only in the location of the first connection point 221 and the fourth slot. Figure 9 and Figure 25 In the antenna 200 shown, the second radiators 240 are all IFA-like structures with one end grounded and the other end open, and all the second radiators 240 operate in quarter-wavelength mode. However, in Figure 25 In the antenna 200 shown, the second radiator 240 forms a metamaterial structure, and the length of the second radiator 240 is greater than... Figure 9 The length of the second radiator 240 shown.

[0275] In one embodiment, in Figure 9 In the antenna 200 shown, the electrical length of the second radiator 240 is one-quarter of the first wavelength, which can be the wavelength corresponding to the parasitic resonance. In one embodiment, in Figure 25 In the antenna 200 shown, the electrical length of the second radiator 240 is greater than three-eighths of the first wavelength. Figure 25 In the antenna 200 shown, the parasitic resonance of the second radiator 240 can correspond to a quarter-wavelength mode. Through the first resonant circuit 261 and the fourth slot, the electrical length of the second radiator 240 can be made greater than three-eighths of the first wavelength. The current on the second radiator 240 is in the same direction (e.g., no reversal), and the electric field between the second radiator 240 and ground does not reverse. The electrical length of the second radiator 240 increases from one-quarter of the first wavelength to more than three-eighths of the first wavelength, but it still operates in a quarter-wavelength mode. In this case, the current density on the second radiator 240 is dispersed, and the electric field density between the second radiator 240 and the ground 300 is weakened, thereby reducing conductor loss and dielectric loss caused by the conductor and dielectric placed around the second radiator 240, thus improving the radiation characteristics of the antenna 200. The increased radiating aperture of the second radiator 240 effectively improves the system efficiency and radiation efficiency of the antenna 200.

[0276] The first wavelength can be understood as the vacuum wavelength corresponding to the resonant point of the parasitic resonance, or it can be understood as the vacuum wavelength corresponding to the center frequency of the resonant frequency band formed by the parasitic resonance. Since there is a certain correspondence between the vacuum wavelength and the dielectric wavelength, the above ratio can be converted to the dielectric wavelength, which will not be elaborated further in this application.

[0277] In one embodiment, the antenna 200 further includes a second tuning circuit 262. The second radiator 240 includes a second connection point 222 and a third connection point 223, and the second tuning circuit 262 is coupled between the second connection point 222 and the third connection point 223. A fourth slot is located between the second connection point 222 and the third connection point 223.

[0278] It should be understood that the equivalent capacitance value of the fourth slot can be adjusted by the second tuning circuit 262 coupled between the second connection point 222 and the third connection point 223, thereby adjusting the radiation characteristics of the antenna 200 (e.g., the resonant frequency of the parasitic resonance generated by the second radiator 240).

[0279] For the sake of brevity, in Figure 25 In the antenna 200 shown, only the second tuning circuit 262 coupled to both sides of the fourth slot is used as an example for illustration. In actual production or design, the antenna 200 may not include the second tuning circuit 262, and the equivalent capacitance value of the fourth slot may be adjusted in other ways.

[0280] In one embodiment, the equivalent capacitance value of the fourth slit 234 is adjusted by regulating the parameters of the radiators on both sides of the fourth slit 234, such as... Figure 26 As shown in (a) of the diagram.

[0281] The formula for calculating capacitance is as follows: ; Wherein, ε is the dielectric constant of the medium between the two plates of the capacitor (radiators on both sides of the gap); δ is the absolute dielectric constant in vacuum; k is the electrostatic constant; S is the area of ​​the two plates facing each other, which is the area of ​​the side radiators on both sides of the gap in this embodiment; d is the vertical distance between the two plates, which is the width of the fourth gap 234 in this embodiment.

[0282] For the sake of brevity, in Figure 26 In the electronic device shown in (a), only the method of adjusting the equivalent capacitance value of the fourth slit 234 by changing the facing area of ​​the radiators on both sides of the fourth slit 234 and the medium filling the fourth slit 234 is shown. In actual production or design, the equivalent capacitance value of the fourth slit 234 can also be adjusted in other ways, and the embodiments of this application do not limit this.

[0283] The equivalent capacitance values ​​of the gaps described in the embodiments of this application can all be adjusted in the manner described above. For the sake of brevity, they will not be repeated here.

[0284] In one embodiment, the antenna 200 further includes a second tuning circuit 262 and a third tuning circuit 263, such as Figure 26 As shown in (b) of the diagram.

[0285] In one embodiment, the first tuning circuit 261 may include a capacitor or an electronic component equivalent to a capacitor.

[0286] In one embodiment, the equivalent capacitance of the first tuning circuit 261 can be less than or equal to a first threshold. The first threshold can be designed based on the resonant frequency of the parasitic resonance generated by the second radiator 240. When the resonant frequency of the parasitic resonance is less than or equal to 1 GHz, the first threshold is 10 pF. When the resonant frequency of the parasitic resonance is greater than 1 GHz, the first threshold is 2 pF.

[0287] In one embodiment, the second tuning circuit 262 may include an inductor or an electronic component equivalent to a capacitor.

[0288] In one embodiment, the equivalent inductance of the second tuning circuit 262 may be less than or equal to 10nH.

[0289] It should be understood that by designing the equivalent capacitance value of the first tuning circuit 261 and the equivalent inductance value of the second tuning circuit 262 according to the frequency of the resonant point of different parasitic resonances, the current distribution on the second radiator 240 can be more dispersed, conductor loss can be reduced, and the radiation aperture of the second radiator 240 can be increased, thereby improving the radiation characteristics of the antenna (e.g., radiation efficiency and system efficiency).

[0290] In one embodiment, the distance between the second connection point 222 and / or the third connection point 223 and the fourth gap is less than or equal to 5 mm.

[0291] The distance between the second connection point 222 and / or the third connection point 223 and the fourth gap can be understood as the minimum distance between the second connection point 222 and / or the third connection point 223 and the conductors on both sides of the fourth gap (the length of the second radiator 240 between the second connection point 222 and / or the third connection point 223 and the fourth gap). When the second tuning circuit 262 is electrically connected to the second connection point 222 and the third connection point 223 through a connector (e.g., a metal spring), the distance to the fourth gap can be understood as the minimum distance between the center of the part of the connector that contacts the connection point and the conductors on both sides of the fourth gap.

[0292] In one embodiment, the second connection point 222 may be located between the fourth position 214 and the third connection point 223.

[0293] In one embodiment, the first connection point 221 is located between the fourth position 214 and the second connection point 222. In one embodiment, the distance between the first connection point 221 and the second connection point 222 (e.g., the length of the second radiator between the first connection point 221 and the second connection point 222) is greater than or equal to 0 mm and less than or equal to 5 mm.

[0294] It should be understood that when the distance between the first connection point 221 and the second connection point 222 is equal to 0 mm, the first connection point 221 and the second connection point 222 coincide. In one embodiment, one end of the first tuning circuit 261 and one end of the second tuning circuit 262 can be coupled to the second connection point 222 (first connection point 221) through the same connector.

[0295] In one embodiment, the first connection point 221 may be located between the third position 213 and the third connection point 223. In one embodiment, the distance between the first connection point 221 and the third connection point 223 (e.g., the length of the second radiator between the first connection point 221 and the third connection point 223) is greater than or equal to 0 mm and less than or equal to 5 mm.

[0296] It should be understood that when the distance between the first connection point 221 and the third connection point 223 is equal to 0 mm, the first connection point 221 and the third connection point 223 coincide. In one embodiment, one end of the first tuning circuit 261 and one end of the second tuning circuit 262 can be coupled to the third connection point 223 (first connection point 221) through the same connector.

[0297] By simultaneously adjusting the radiating aperture of the second radiator 240 through the first tuning circuit 261 and the second tuning circuit 262, parasitic resonance in the desired frequency band is achieved.

[0298] It should be understood that the first connection point 221 can be located at any position on the second radiator 240, and this embodiment of the application does not impose any limitation on this. When the length of the second radiator between the first connection point 221 and the second connection point 222 / third connection point 223 is less than or equal to 5mm, the radiating aperture of the second radiator 240 can be better adjusted, thereby improving the radiation characteristics of the antenna 200.

[0299] In one embodiment, the length of the second radiator 240 between the first end (ground end, fourth position 214) and the fourth gap is less than the length of the second radiator 240 between the second end (open end, third position 213) and the fourth gap.

[0300] It should be understood that the length of the radiator between one end of the radiator and the first gap can be understood as the length of the conductor portion between the end of that radiator and the fourth gap. For the sake of brevity, this can be understood accordingly in the embodiments of this application.

[0301] In one embodiment, the length of the second radiator 240 between the first end (ground end, fourth position 214) and the fourth gap is less than three-fifths of the length of the second radiator 240 between the second end (open end, third position 213) and the fourth gap.

[0302] In one embodiment, the length of the second radiator 240 between the first end (ground end, fourth position 214) and the fourth gap is less than one-third of the length of the second radiator 240 between the second end (open end, third position 213) and the fourth gap.

[0303] In one embodiment, the length of the second radiator 240 between the first end (ground end, fourth position 214) and the fourth gap is less than one-seventh of the length of the second radiator 240 between the second end (open end, third position 213) and the fourth gap.

[0304] It should be understood that the aforementioned fourth slot can be located in a region of high current in the second radiator 240. The region of high current should be understood as, relative to the unslotted second radiator 240 (e.g., operating in quarter-wavelength mode), when the fourth slot is opened, the electric field strength of the second radiator 240 weakens, achieving the effect of dispersing the electric field, thereby improving the system efficiency and radiation efficiency of the antenna 200.

[0305] For the sake of brevity, Figure 25 The antenna 200 shown is Figure 9 The similar parts of the antenna 200 shown will not be described in detail, such as the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; and the relative positions of the first radiator 230 and the second radiator 240.

[0306] Figures 27 to 30 yes Figure 25 The radiation pattern of the foldable electronic device 100 in its unfolded state at 2.2 GHz is shown. Figure 27 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided. Figure 28 The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is less than the resonant frequency of the first resonance. Figure 29 It is the radiation pattern of the foldable electronic device 100 in its unfolded state when the resonant frequency of the parasitic resonance is close to the resonant frequency of the first resonance. Figure 30The radiation pattern of the foldable electronic device 100 in its unfolded state is when the resonant frequency of the parasitic resonance is greater than the resonant frequency of the first resonance.

[0307] like Figure 27 As shown, without the second radiator, in the unfolded state of the foldable electronic device, the current on the floor affects the maximum radiation direction of the antenna's radiation pattern, causing the maximum radiation direction to deviate from the top direction (e.g., the y-direction). Without the second radiator, the antenna's directivity is 3.53 dBi.

[0308] After installing the second radiator, the foldable electronic device, in its unfolded state, reduces the influence of the current on the floor 300 on the maximum radiation direction of the antenna pattern, ensuring that the maximum radiation direction does not deviate from the top direction (e.g., the y-direction), and the radiated energy is more concentrated. Figures 28 to 30 As shown.

[0309] When the resonant frequency of the parasitic resonance is lower than that of the first resonance, the antenna's directivity is 5 dBi. When the resonant frequency of the parasitic resonance is close to that of the first resonance, the antenna's directivity is 5.02 dBi. When the resonant frequency of the parasitic resonance is higher than that of the first resonance, the antenna's directivity is 5.01 dBi.

[0310] Figure 31 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0311] like Figure 31 As shown, the first frame 210 is coupled to the floor 300 at the first position 211.

[0312] It should be understood that Figure 31 The antenna 200 shown is Figure 25 The antenna 200 shown differs only in the boundary conditions of the first radiator 230. In the above embodiment, the example is given only with both ends of the first radiator 230 being open and the first radiator 230 forming a dipole-like structure. In actual production or design, the first end of the first radiator 230 is grounded, and the second end is open, forming an IFA-like structure; this application does not impose any limitations on this.

[0313] In one embodiment, the antenna 200 may further include a third tuning circuit 263 and / or a fourth tuning circuit 264, such as Figure 32 As shown.

[0314] The first radiator 230 includes a fourth connection point 224, and a third tuning circuit 263 is coupled between the fourth connection point 224 and the floor 300.

[0315] The first radiator 230 includes a fifth connection point 225 and a sixth connection point 226, and a fourth tuning circuit 264 is coupled between the fifth connection point 225 and the sixth connection point 226. The first radiator 230 has a fifth gap between the fifth connection point 225 and the sixth connection point 226.

[0316] It should be understood that the first radiator 230 is electrically connected to the ground plane 300 at the fourth connection point 224 via the third tuning circuit 263. This allows the current in the first radiator 230 to be shunted in the region near the fourth connection point 224 when the first radiator 230 exhibits parasitic resonance. This shunt in the region near the fourth connection point 224 disperses the current density on the first radiator 230. In one embodiment, the more dispersed current distribution in the first radiator 230 reduces conductor losses. In another embodiment, the more dispersed current distribution in the first radiator 230 increases the radiating aperture of the first radiator 230. Due to the reduced conductor losses in the first radiator 230 and the increased radiating aperture of the antenna 200, the system efficiency and radiation efficiency of the antenna can be improved.

[0317] Simultaneously, a fifth slot is formed on the first radiator 230. This fifth slot can be considered as an equivalent capacitance (e.g., distributed capacitance) on the first radiator 230, which allows the first radiator 230 to form a metamaterial structure. The first radiator 230 with this metamaterial structure can increase the radiation aperture. After the fifth slot is formed, the electric field is more dispersed, and the dielectric loss near the conductor is reduced, thus effectively improving the system efficiency and radiation efficiency of the antenna 200. By using a fourth tuning circuit 264 coupled between the fifth connection point 225 and the sixth connection point 226, the equivalent capacitance value of the fifth slot can be adjusted, thereby adjusting the radiation characteristics (e.g., resonant frequency) of the antenna 200.

[0318] In one embodiment, the relative positional relationship between the fourth connection point 224, the fifth connection point 225, the sixth connection point 226, and the fifth gap can be understood by referring to the relative positional relationship between the first connection point 221, the second connection point 222, the third connection point 223, and the fourth gap in the above embodiment. For the sake of brevity, they will not be described in detail.

[0319] For the sake of brevity, Figure 32 and Figure 31 The antenna 200 shown is Figure 25 The similar parts of the antenna 200 shown will not be described in detail, such as the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; and the relative positions of the first radiator 230 and the second radiator 240.

[0320] Figure 33 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0321] It should be understood that the above embodiments are only illustrated by the example of a foldable electronic device 100 comprising only two housings (e.g., a bi-fold electronic device). In actual production or design, the technical solutions provided in the embodiments of this application can also be applied to devices comprising multiple housings (e.g., a multi-fold electronic device). Figure 33 As shown, the foldable electronic device 100, which includes three housings, is used as an example for illustration.

[0322] like Figure 33 As shown, the foldable electronic device 100 may further include a third housing 204 and a pivot 205. The pivot 205 is located between the second housing 202 and the third housing 204, and the pivot 205 is rotatably connected to both the second housing 202 and the third housing 204, allowing the second housing 202 and the third housing 204 to rotate relative to each other.

[0323] It should be understood that Figure 33 The antenna 200 shown is Figure 25 The only difference between the foldable electronic device 100 shown is the third housing 204 and the hinge 205. Figure 33 The antenna 200 shown is Figure 25 The similar parts of the antenna 200 shown will not be described in detail, such as the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; and the relative positions of the first radiator 230 and the second radiator 240.

[0324] Figure 34 and Figure 35 yes Figure 33 The radiation pattern of the foldable electronic device 100 in its unfolded state at 2.2 GHz is shown. Figure 34 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when no second radiator is provided. Figure 35 This is the radiation pattern of the foldable electronic device 100 in its unfolded state when the second radiator is installed.

[0325] like Figure 34 As shown, without the second radiator, compared to the above embodiment, Figure 33 The foldable electronic device shown has a larger floor dimension in its unfolded state. The current on the floor has a greater impact on the maximum radiation direction of the antenna pattern, and the maximum radiation direction of the antenna pattern deviates more from the top direction (e.g., the y-direction). Without a second radiator, the antenna's directivity is 3.77 dBi.

[0326] like Figure 35 As shown, after setting the second radiator, the foldable electronic device, in its unfolded state, reduces the influence of the current on the floor 300 on the maximum radiation direction of the antenna pattern, so that the maximum radiation direction does not deviate from the top direction (e.g., the y direction), and the radiated energy is more concentrated, with the antenna directivity coefficient being 5.56 dBi.

[0327] Figure 36 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0328] like Figure 36 As shown, the third housing 204 includes a third frame 310, at least a portion of which is spaced apart from the floor 300.

[0329] The third border 310 includes a seventh position 217 and an eighth position 218. The seventh position 217 may be located on the third side of the third border 310. In one embodiment, the eighth position 218 may be located on the third side of the third border 310. When the foldable electronic device 100 is in the unfolded state, the first side, the second side, and the third side may be the same side of the foldable electronic device 100, for example, the top side or the bottom side.

[0330] Antenna 200 also includes a third radiator 320 and a fifth tuning circuit 265. The third radiator 320 is the conductive portion of the third frame 310 between the seventh position 217 and the eighth position 218.

[0331] It should be understood that Figure 36 The antenna 200 shown is Figure 33 The only difference in the foldable electronic device 100 shown is the third radiator 320.

[0332] exist Figure 33 In the foldable electronic device 100 shown, a third radiator 320 is not provided (the third frame 310 does not include the seventh position 217 and the eighth position 218). The first radiator 230 generates a resonant point for the first resonance, and the current generated on the first radiator 230 and the current generated on the second radiator 240 are in the same direction. When the foldable electronic device 100 is in the unfolded state, the current generated on the first radiator 230 and the current generated on the second radiator 240 can form an effect similar to a current array, giving the antenna 200 strong linear polarization characteristics and a higher directivity coefficient.

[0333] And in Figure 36In the foldable electronic device 100 shown, a third radiator 320 is provided. At the resonant point where the first radiator 230 generates the first resonance, the current generated on the first radiator 230 and the current generated on the second radiator 240 are in the same direction, while the current generated on the first radiator 230 and the current generated on the third radiator 320 are in opposite directions (the fifth tuning circuit 265 can be used to generate the current in this direction). When the foldable electronic device 100 is in the unfolded state, the reverse current generated on the third radiator 320 can reduce the effect of the current generated on the first radiator 230 and the current generated on the second radiator 240 forming a current array-like effect, thereby reducing the directivity coefficient of the antenna 200 and giving the antenna 200 a wider radiation beam (e.g., a beam with a gain difference of less than 3 dB from the direction of maximum radiation).

[0334] In one embodiment, the structure formed by the third radiator 320 can be similar to the structure formed by any of the second radiators 240 in the above embodiments. In one embodiment, the third radiator 320 can be a structure with one end open and the other end grounded. The third frame 310 has a sixth slot at the seventh position 217 and is coupled to the ground plane 300 at the eighth position 218. Alternatively, the third frame 310 is coupled to the ground plane 300 at the seventh position 217 and has a sixth slot at the eighth position 218. In one embodiment, the third radiator 320 can be a metamaterial structure. The antenna 200 includes a sixth tuning circuit 266. The sixth tuning circuit 266 is coupled between the eighth and ninth connection points of the third radiator 320, and the third radiator 320 has a slot between the eighth and ninth connection points. In one embodiment, the third radiator 320 can be a structure with both ends open. The third frame 310 has a sixth slot and a seventh slot at the seventh position 217 and the eighth position 218.

[0335] It should be understood that the third radiator 320 and the second radiator 240 can have the same structure, for example, a structure with both ends being open, or a structure with one end being open and the other end being grounded. Alternatively, the third radiator 320 and the second radiator 240 can have different structures. This application embodiment does not limit this and the choice can be made according to actual production or design.

[0336] Figure 37 yes Figure 36 The radiation pattern of the foldable electronic device 100 in its unfolded state at 2.2 GHz is shown.

[0337] like Figure 37 As shown, after the second radiator is set, the foldable electronic device, in its unfolded state, reduces the influence of the current on the floor 300 on the maximum radiation direction of the antenna pattern, so that the maximum radiation direction does not deviate from the top direction (e.g., the y direction).

[0338] Meanwhile, after setting the third radiator, the reverse current generated on the third radiator can weaken the current generated on the first radiator and the current generated on the second radiator can form an effect similar to current array, and the directivity coefficient of the antenna is reduced to 2.1 dBi.

[0339] Figure 38 This is a schematic diagram of another foldable electronic device 100 provided in the embodiments of this application.

[0340] like Figure 38 As shown, the second frame 220 has a third gap 233 at the third position 213. The second frame 220 is coupled to the floor 300 at the fourth position 214. The second frame 220 has a fourth gap 234 between the third position 213 and the fourth position 214.

[0341] When the foldable electronic device 100 is in the unfolded state, the third position 213 is located between the second position 212 and the fourth position 214.

[0342] It should be understood that Figure 38 The antenna 200 in the foldable electronic device 100 shown is compared to Figure 25 , Figures 31 to 33 , Figure 36 The antenna 200 in the foldable electronic device 100 shown differs only in the relative position of the third position 213 and the fourth position 214 relative to the pivot 203.

[0343] exist Figure 25 , Figure 26 , Figures 31 to 33 , Figure 36 In the foldable electronic device 100 shown, when the foldable electronic device 100 is in the unfolded state, the fourth position 214 is located between the second position 212 and the third position 213. The fourth position 214 is closer to the pivot 203 than the third position 213 (the distance between the fourth position 214 and the pivot 203 along the second frame 220 is less than the distance between the third position 213 and the pivot 203 along the second frame 220). The first end of the second radiator 240 is an open end, and the second end is a grounded end. The grounded end of the second radiator 240 is close to the pivot 203.

[0344] And in Figure 38In the foldable electronic device 100 shown, when the foldable electronic device 100 is in the unfolded state, the third position 213 is located between the second position 212 and the fourth position 214. The fourth position 214 is farther away from the pivot 203 than the third position 213 (the distance between the fourth position 214 and the pivot 203 along the second frame 220 is greater than the distance between the third position 213 and the pivot 203 along the second frame 220). The first end of the second radiator 240 is an open end, and the second end is a grounded end. The open end of the second radiator 240 is close to the pivot 203.

[0345] Figure 38 The antenna 200 in the foldable electronic device 100 shown may also have the radiation characteristics of the antenna 200 in the above embodiments. For example, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the radiation characteristics of the antenna 200. In one embodiment, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the pattern generated by the antenna 200. The first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the pattern generated by the antenna 200, thereby adjusting the maximum radiation direction of the pattern generated by the antenna 200. When the foldable electronic device 100 is in the unfolded state, the first tuning circuit 261 may be used to adjust the maximum radiation direction of the pattern generated by the antenna 200, so that the maximum radiation direction of the pattern generated by the antenna 200 is oriented towards a target direction (e.g., towards a communication satellite).

[0346] In one embodiment, when the foldable electronic device 100 is in a folded state, the first gap 231 of the first frame 210 is aligned with the fourth gap 234 of the second frame 220, and / or the second gap 232 of the first frame 210 is aligned with the third gap 233 of the second frame 220, so as to improve the aesthetics of the foldable electronic device 100.

[0347] In one embodiment, the antenna 200 further includes a second tuning circuit 262, such as Figure 39 As shown. The second radiator 240 includes a second connection point 222 and a third connection point 223, and a second tuning circuit 262 is coupled between the second connection point 222 and the third connection point 223. The fourth gap is located between the second connection point 222 and the third connection point 223.

[0348] It should be understood that the first radiator 230, the second radiator 240, the first tuning circuit 261, and the second tuning circuit 262 are used to generate the radiation pattern of the antenna. In one embodiment, the equivalent capacitance value of the fourth slot can be adjusted by means of the second tuning circuit 262 coupled between the second connection point 222 and the third connection point 223, thereby adjusting the radiation characteristics (e.g., the resonant frequency) of the antenna 200.

[0349] For the sake of brevity, Figure 38 and Figure 39 The parts of the antenna 200 shown are similar to those in the above embodiments and will not be described in detail. For example, the position of the first radiator 230; the frequency band of satellite communication; the frequency difference between the first resonance generated by the first radiator 230 and the parasitic resonance generated by the second radiator 240; the relative positions of the first radiator 230 and the second radiator 240, etc.

[0350] Figure 40 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0351] like Figure 40 As shown, the second frame 220 is coupled to the floor 300 at the third position 213 and the fourth position 214. The second frame 220 has a third gap 233 between the third position 213 and the fourth position 214.

[0352] It should be understood that Figure 38 The antenna 200 in the foldable electronic device 100 shown differs from the antenna 200 in the foldable electronic device 100 shown in the above embodiment only in the boundary conditions of the second radiator 240 (both ends of the second radiator 240 are open ends or grounded ends).

[0353] In some of the above embodiments, the first end of the second radiator 240 is an open end and the second end is a grounded end (e.g., Figure 9 , Figure 25 In the foldable electronic device 100 shown, an IFA-like structure is formed. In some embodiments described above, the first and second ends of the second radiator 240 are open ends (e.g., Figure 20 In the foldable electronic device 100 shown, a dipole-like structure is formed.

[0354] And in Figure 40 In the foldable electronic device 100 shown, the first and second ends of the second radiator 240 are grounded, forming a structure similar to a slot antenna. The second radiator 240 can operate in a half-wavelength mode.

[0355] Figure 40The antenna 200 in the foldable electronic device 100 shown may also have the radiation characteristics of the antenna 200 in the above embodiments. For example, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the radiation characteristics of the antenna 200. In one embodiment, the first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the pattern generated by the antenna 200. The first tuning circuit 261 may be used to reduce the influence of the current on the floor 300 on the maximum radiation direction of the pattern generated by the antenna 200, thereby adjusting the maximum radiation direction of the pattern generated by the antenna 200. When the foldable electronic device 100 is in the unfolded state, the first tuning circuit 261 may be used to adjust the maximum radiation direction of the pattern generated by the antenna 200, so that the maximum radiation direction of the pattern generated by the antenna 200 is oriented towards a target direction (e.g., towards a communication satellite).

[0356] In one embodiment, the antenna 200 further includes a second tuning circuit 262, such as Figure 40 As shown. The second radiator 240 includes a second connection point 222, and a second tuning circuit 262 is coupled to the second connection point 222. In one embodiment, a third gap 233 is located between the second connection point 222 and the first connection point 221.

[0357] It should be understood that the first radiator 230, the second radiator 240, the first tuning circuit 261, and the second tuning circuit 262 are used to generate the radiation pattern of the antenna. In one embodiment, the first tuning circuit 261 and the second tuning circuit 262 can be used to jointly adjust the radiation characteristics of the antenna 200 (e.g., the resonant frequency of the parasitic resonance generated by the second radiator 240).

[0358] In one embodiment, when the foldable electronic device 100 is in a folded state, the second gap 232 opened by the first frame 210 is aligned with the third gap 233 opened by the second frame 220 to improve the aesthetics of the foldable electronic device 100.

[0359] In one embodiment, the third position 213 and the fourth position 214 are located on the second side of the second border 220.

[0360] In one embodiment, when the foldable electronic device 100 is in a folded state, the first gap 231 opened by the first frame 210 is aligned with the third gap 233 opened by the second frame 220 to improve the aesthetics of the foldable electronic device 100.

[0361] In one embodiment, the third position 213 is located on the second side of the second border 220. The fourth position 214 is located on the other sides of the second border 220.

[0362] In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is less than or equal to one-quarter of the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is less than or equal to one-eighth of the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is less than or equal to 10 mm. In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is less than or equal to 5 mm.

[0363] In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is greater than or equal to one-quarter of the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is greater than or equal to one-half the length of the second radiator 240. In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is greater than or equal to 20 mm. In one embodiment, the minimum distance between the second radiator 240 and the first rotating shaft 203 is greater than or equal to 40 mm.

[0364] It should be understood that the embodiments of this application do not limit the specific location of the second radiator 240, and adjustments may be made according to actual production or design. For the sake of brevity, these will not be elaborated on in detail.

[0365] In one embodiment, the second border 220 has a third gap 233 and a fourth gap 234 between the third position 213 and the fourth position 214, such as Figure 42 As shown.

[0366] In one embodiment, the third position 213, the third gap 233, the fourth gap 234, and the fourth position 214 are arranged sequentially. In one embodiment, the third position 213 is located on the second side of the second frame 220. The fourth position 214 is located on the other sides of the second frame 220.

[0367] In one embodiment, when the foldable electronic device 100 is in a folded state, the first gap 231 of the first frame 210 is aligned with the fourth gap 234 of the second frame 220, and / or the second gap 232 of the first frame 210 is aligned with the third gap 233 of the second frame 220, so as to improve the aesthetics of the foldable electronic device 100.

[0368] In one embodiment, where the second frame 220 has a third slot 233 and a fourth slot 234, the antenna 200 may include a plurality of tuning circuits.

[0369] It should be understood that the first radiator 230, the second radiator 240, and the plurality of tuning circuits are used to generate the radiation pattern of the antenna. In one embodiment, the plurality of tuning circuits are used to jointly adjust the radiation characteristics of the antenna 200 (e.g., the resonant frequency of the parasitic resonance generated by the second radiator 240).

[0370] It should be understood that, in the embodiments of this application, in Figure 42 This explanation uses antenna 200, including a first tuning circuit 261 and a second tuning circuit 262, as an example (the third slot 233 and the fourth slot 234 are located between the first connection point 221 and the second connection point 222). In actual production or design, the coupling positions of the tuning circuits with the second radiator 240 and the number of tuning circuits can be adjusted. For example, tuning circuits can be coupled between the radiators on both sides of the slot, or the radiator between the third and fourth slots can include a connection point coupled to the tuning circuit, and so on. For the sake of brevity, these will not be elaborated further.

[0371] Figure 43 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0372] like Figure 43 As shown, the foldable electronic device 100 may further include a third housing 204 and a pivot 205. The pivot 205 is located between the first housing 201 and the third housing 204, and the pivot 205 is rotatably connected to the first housing 201 and the third housing 204 respectively, so that the first housing 201 and the third housing 204 can rotate relative to each other.

[0373] It should be understood that Figure 43 The antenna 200 shown is Figure 33 The only difference between the foldable electronic device 100 shown is the position of the third housing 204 and the hinge 205. Figure 33 In the foldable electronic device 100 shown, the hinge 205 is located between the second housing 202 and the third housing 204. Figure 43 In the foldable electronic device 100 shown, the pivot 205 is located between the first housing 201 and the third housing 204.

[0374] In one embodiment, the third housing 204 includes a third frame 310, at least a portion of which is spaced apart from the floor 300. The third frame 310 includes a seventh position 217 and an eighth position 218. The seventh position 217 may be located on the third side of the third frame 310. In one embodiment, the eighth position 218 may be located on the third side of the third frame 310. When the foldable electronic device 100 is in the unfolded state, the first, second, and third sides may be the same side of the foldable electronic device 100, for example, the top or bottom side.

[0375] In one embodiment, the antenna 200 further includes a third radiator 320 and a fifth tuning circuit 265. The third radiator 320 is a conductive portion of a third frame 310 between a seventh position 217 and an eighth position 218.

[0376] The third radiator 320 includes a seventh connection point 227, and a fifth tuning circuit 265 is coupled between the seventh connection point 227 and the floor 300.

[0377] It should be understood that when the foldable electronic device 100 is in the unfolded state, the power supply circuit feeds in an electrical signal. The first radiator 230 is used to generate a first resonance, the second radiator 240 is used to generate a first parasitic resonance, and the third radiator 320 can be used to generate a second parasitic resonance. The first tuning circuit 261 and the fifth tuning circuit 265 can be used to switch the maximum radiation direction of the radiation pattern generated by the antenna 200. The first tuning circuit 261 can make the first parasitic resonance generated by the second radiator 240 closer to the first resonance by switching the equivalent electrical parameters (e.g., equivalent capacitance, equivalent inductance, or equivalent resistance) between the first connection point 221 and the ground 300. The fifth tuning circuit 265 can make the second parasitic resonance generated by the third radiator 320 closer to the first resonance by switching the equivalent electrical parameters (e.g., equivalent capacitance, equivalent inductance, or equivalent resistance) between the seventh connection point 227 and the ground 300. (The first parasitic resonance and the second parasitic resonance being closer to the first resonance can be similar to the parasitic resonance generated by the second radiator being closer to the first resonance in the above embodiments, and will not be described in detail again.) The first and second parasitic resonances together reduce the impact of the current on the ground plane 300 on the radiation characteristics of the antenna 200. The first and second parasitic resonances also reduce the impact of the current on the ground plane 300 on the maximum radiation direction of the pattern generated by the antenna 200. When the foldable electronic device 100 is in the unfolded state, the first and second parasitic resonances together reduce the impact of the current on the ground plane 300 on the maximum radiation direction of the pattern generated by the antenna 200, thereby adjusting the maximum radiation direction of the pattern generated by the antenna 200. The first and second parasitic resonances together adjust the maximum radiation direction of the pattern generated by the antenna 200, so that the maximum radiation direction of the pattern generated by the antenna 200 is oriented towards the target direction (e.g., towards a communication satellite). Because the impact of the current on the ground plane 300 on the maximum radiation direction of the pattern generated by the antenna 200 is reduced, the maximum radiation direction of the pattern generated by the antenna 200 is approximately the same in both the folded and unfolded states of the foldable electronic device 100. Therefore, when conducting satellite communication, changing the state of the foldable electronic device 100 (folded or unfolded) does not require the user to change their posture while holding the foldable electronic device 100, effectively improving the user experience.

[0378] Simultaneously, at the resonant point where the first radiator 230 generates the first resonance, the currents generated on the first radiator 230, the second radiator 240, and the third radiator 320 are in the same direction. These currents can form an effect similar to a current array, giving the antenna 200 strong linear polarization characteristics and a higher directivity coefficient. Since gain is related to directivity coefficient, the higher directivity coefficient allows for improved gain in the antenna 200, resulting in better satellite communication performance for the foldable electronic device 100.

[0379] In one embodiment, the structure formed by the third radiator 320 can be similar to the structure formed by any of the second radiators 240 in the above embodiments. For example, Figure 43 The structure formed by the third radiator 320 can be replaced by the structure formed by any of the second radiators 240 in the above embodiments. In one embodiment, the third radiator 320 can be a structure with one end open and the other end grounded. The third frame 310 has a sixth slot at the seventh position 217 and is coupled to the ground plane 300 at the eighth position 218. Alternatively, the third frame 310 is coupled to the ground plane 300 at the seventh position 217 and has a sixth slot at the eighth position 218. In one embodiment, the third radiator 320 can be a metamaterial structure. The antenna 200 includes a sixth tuning circuit 266. The sixth tuning circuit 266 is coupled between the eighth and ninth connection points of the third radiator 320, and the third radiator 320 has a slot between the eighth and ninth connection points. In one embodiment, the third radiator 320 can be a structure with both ends open. The third frame 310 has a sixth slot and a seventh slot at the seventh position 217 and the eighth position 218.

[0380] It should be understood that the third radiator 320 and the second radiator 240 can be any of the structures described in the above embodiments. For the sake of brevity, they will not be described in detail here. In one embodiment, the third radiator 320 and the second radiator 240 can be the same structure, for example, a structure with both ends being open, or a structure with one end being open and the other end being grounded. Alternatively, the third radiator 320 and the second radiator 240 can be different structures. This application does not limit this, and the choice can be made according to actual production or design.

[0381] Figure 44 This is a schematic diagram of a foldable electronic device 100 provided in an embodiment of this application.

[0382] It should be understood that Figure 44 The antenna 200 shown is Figure 43The only difference of the foldable electronic device 100 shown is that it does not include the third radiator 320.

[0383] exist Figure 43 In the foldable electronic device 100 shown, a third radiator 320 is provided. At the resonant point where the first radiator 230 generates a first resonance, the currents generated on the first radiator 230, the second radiator 240, and the third radiator 320 are in the same direction. The currents generated on the first radiator 230, the second radiator 240, and the third radiator 320 can form an effect similar to a current array, giving the antenna 200 strong linear polarization characteristics and a higher directivity coefficient.

[0384] And in Figure 44 The foldable electronic device 100 shown does not have a third radiator 320. For example, compared to Figure 43 The antenna 200 shown reduces the effect of current-induced current-like array formation, thereby reducing the directivity coefficient of the antenna 200 and giving the antenna 200 a wider radiation beam (e.g., a beamwidth within 3 dB of the gain in the direction of maximum radiation).

[0385] The absence of a third radiator 320 can be understood as meaning that all radiators (parasitic branches) on the third frame 310 will not have a significant impact on the radiation pattern of the antenna 200 (for example, the maximum radiation direction of the radiation pattern generated by the antenna 200 is shifted by more than 10°).

[0386] Figure 45 This is a schematic diagram of an electronic device 100 provided in an embodiment of this application.

[0387] It should be understood that in the above embodiments, the electronic device 100 is described as a foldable electronic device. In actual production or design, the technical solutions described in the embodiments of this application can also be used for other types of electronic devices 100, including those with larger floor sizes.

[0388] like Figure 45 As shown, the electronic device 100 and the sub-device 100 may include a first frame 210 and a floor 300. At least a portion of the first frame 210 is spaced apart from the floor 300.

[0389] The first frame 210 includes a first side 301. The first side 301 includes a first position 211, a second position 212, a third position 213, and a fourth position 214 arranged sequentially. The first frame 210 has an insulating gap or is coupled to the floor 300 at the first position 211. The first frame 210 has an insulating gap or is coupled to the floor 300 at the second position 212. The first frame 210 has an insulating gap or is coupled to the floor 300 at the third position 213. The first frame 210 has an insulating gap or is coupled to the floor 300 at the fourth position 214.

[0390] The electronic device 100 may also include an antenna 200. The operating frequency band of the antenna 200 may include the satellite communication frequency band.

[0391] The antenna 200 includes: a first radiator 230, a second radiator 240, a feeding circuit 250, and a first tuning circuit 261.

[0392] The first radiator 230 is the conductive portion of the first frame 210 between the first position 211 and the second position 212. The second radiator 240 is the conductive portion of the second frame 220 between the third position 213 and the fourth position 214.

[0393] The first radiator 230 includes a feed point 251, and the feed circuit 250 is coupled to the feed point 251.

[0394] The second radiator 240 includes a first connection point 221, and a first tuning circuit 261 is coupled between the first connection point 221 and the floor 300.

[0395] The first border 210 also includes a second side 302 and a third side 303 that intersect the first side 301 at an angle.

[0396] In one embodiment, the length L0 of the first side 301, the length L1 of the first radiator 230, and the length L2 of the second radiator 240 satisfy: 1.2 (L1+L2)≤L0. In one embodiment, the length L0 of the first side 301, the length L1 of the first radiator 230, and the length L2 of the second radiator 240 satisfy: 1.5 (L1+L2)≤L0. In one embodiment, the length L0 of the first side 301, the length L1 of the first radiator 231, and the length L2 of the second radiator 240 satisfy: 2 (L1+L2)≤L0.

[0397] 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 extension direction (e.g., the x-direction) of the first side 301. The proportional relationship between the length L0 of the first side 301 and the lengths L1 of the first radiator 230 and L2 of the second radiator 240 can also be understood as the proportional relationship between the dimension L0' of the floor 300 in the extension direction (e.g., the x-direction) of the first side 301 and the length L1 of the lengths L2 of the first radiator 230 and the second radiator 240. For example, 1.2 (L1+L2)≤L0', 1.5 (L1+L2)≤L0',2 (L1+L2)≤L0'.

[0398] In one embodiment, the distance between the first position 211 and the second side 302 is less than or equal to the distance between the second position 212 and the third side 303. The first radiator 230 is positioned close to the second side 302.

[0399] It should be understood that the distance between the first position 211 and the second side 302 can be interpreted as the distance between the first position 211 and the second side 302 along the extension direction of the first side 301 (e.g., the x-direction). For the sake of brevity, the distances between the first position 211 and the second side 302 described in the embodiments of this application can be understood accordingly.

[0400] It should be understood that in the above embodiments (e.g., Figures 9 to 43 The electronic device 100 shown is a foldable electronic device. A first radiator 230 and a second radiator 240 are located on a first housing 201 and a second housing 202 that can be folded together, respectively. When the electronic device 100 is in the unfolded state, both the first radiator 230 and the second radiator 240 are located on the same side of the electronic device 100. An electrical signal is fed into the power supply circuit 250, causing the first radiator 230 to generate a first resonance. The second radiator 240 and the first tuning circuit 261 can be used to reduce the influence of the current on the ground plane 300 on the antenna's radiation pattern.

[0401] And in Figure 45 The electronic device 100 shown is similar to the electronic device 100 shown in the above embodiment ( Figures 9 to 44 The only difference between the electronic device 100 shown is that the electronic device 100 is not foldable.

[0402] exist Figure 45 In the electronic device 100 shown, the first radiator 230 and the second radiator 240 can be any of the structures of the first radiator 230 and the second radiator 240 shown in the above embodiments.

[0403] When the first radiator 230 is positioned close to the second side 302, an electrical signal is fed into the feeding circuit 250, causing the first radiator 230 to resonate. The second radiator 240 and the first tuning circuit 261 can be used to reduce the influence of the current on the ground plane 300 on the radiation pattern generated by the antenna. Because the influence of the current on the ground plane 300 on the maximum radiation direction of the antenna's radiation pattern is reduced, the angle between the maximum radiation direction of the antenna 200's radiation pattern and the direction perpendicular to the extension direction of the first side 301 (e.g., the y-direction) is smaller. The maximum radiation direction of the antenna 200's radiation pattern can be directed towards a target direction (e.g., towards a communication satellite), facilitating the establishment of a communication connection with the satellite.

[0404] In one embodiment, the first radiator 230 and the second radiator 240 are located on either side of the midpoint of the first side 301. The lengths of the first side 301 on both sides of the midpoint are the same.

[0405] It should be understood that the first radiator 230 and the second radiator 240 are located on both sides of the midpoint of the first side 301, which can further reduce the influence of the current on the floor 300 on the side of the second radiator 240 on the maximum radiation direction of the antenna pattern, so that the maximum radiation direction of the antenna pattern generated by the antenna 200 does not deflect towards the side of the second radiator 240.

[0406] In one embodiment, the distance L1' between the first position 211 and the second side 302 and the length L1 of the first radiator 230 satisfy: L1' ≤ L1. 0.5.

[0407] In one embodiment, the distance L2' between the fourth position 214 and the third side 303 and the length L2 of the second radiator 240 satisfy: L2' ≤ L2. 0.5.

[0408] It should be understood that Figure 45 The electronic device 100 shown is Figures 9 to 44 Similar parts of the electronic device 100 shown will not be described in detail. For example, similar parts include: parameters related to the insulating gaps opened on the frame; satellite communication frequency band; efficiency dips caused by parasitic resonances generated by parasitic stubs in the operating frequency band; and so on.

[0409] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foldable electronic device, characterized by, include: The first shell, the second shell, and the floor, wherein... The first housing includes a first frame, and the second housing includes a second frame, wherein the first frame is at least partially spaced from the floor, and the second frame is at least partially spaced from the floor. The first frame includes a first position and a second position, the first position and the second position are located on a first side of the first frame, wherein the first frame has a first gap at the first position and a second gap at the second position; The second frame includes a third position and a fourth position. The third position is located on the second side of the second frame. The second frame has a third gap at the third position and a fourth gap at the fourth position. When the foldable electronic device is in the unfolded state, the first side and the second side are both the top or bottom edge of the foldable electronic device. When the foldable electronic device is in the folded state, the third gap is aligned with the first gap, and the fourth gap is aligned with the second gap. A first rotating shaft is located between the first housing and the second housing, and is rotatably connected to both the first housing and the second housing; and Antenna, the antenna comprising: A first radiator and a second radiator, wherein the first radiator is a conductive portion of a first border between the first position and the second position, and the second radiator is a conductive portion of the second border between the third position and the fourth position; and A feeding circuit, wherein the first radiator includes a feeding point, and the feeding circuit is coupled to the feeding point; A first tuning circuit, the second radiator including a first connection point, the first tuning circuit being coupled between the first connection point and the floor; Wherein, when the foldable electronic device is in the unfolded state, the first radiator is used to generate a first resonance, the resonant frequency band of the first resonance includes the satellite communication frequency band, and wherein the first radiator, the second radiator and the first tuning circuit are used to generate the radiation pattern of the antenna.

2. The foldable electronic device of claim 1, wherein, The antenna also includes: The second tuning circuit, the second radiator including a second connection point, the second tuning circuit being coupled between the second connection point and the floor.

3. The foldable electronic device according to claim 2, characterized in that, The length of the conductor portion of the second frame between the first connection point and the third position is less than or equal to 5 mm; or, The length of the conductor portion of the second frame between the second connection point and the fourth position is less than or equal to 5 mm.

4. A foldable electronic device, characterized by include: The system comprises a first housing, a second housing, a floor, and a first pivot, wherein the first pivot is located between the first housing and the second housing, and is rotatably connected to both the first housing and the second housing; wherein... The first housing includes a first frame, and the second housing includes a second frame, wherein the first frame is at least partially spaced from the floor, and the second frame is at least partially spaced from the floor. The first frame includes a first position and a second position, the first position and the second position are located on a first side of the first frame, wherein the second position is located between the first position and the pivot, the first frame has a first gap at the first position and a second gap at the second position; The second frame includes a third position and a fourth position, the third position and the fourth position are located on the second side of the second frame, wherein the fourth position is located between the third position and the pivot, the second frame has a third gap at the third position, and the second frame is coupled to the floor at the fourth position; When the foldable electronic device is in the unfolded state, the first side and the second side are both the top or bottom side of the foldable electronic device, and the fourth position is located between the second position and the third position; Antenna, the antenna comprising: A first radiator and a second radiator, wherein the first radiator is a conductive portion of a first border between the first position and the second position, and the second radiator is a conductive portion of the second border between the third position and the fourth position; and A feeding circuit, wherein the first radiator includes a feeding point, and the feeding circuit is coupled to the feeding point; A first tuning circuit, the second radiator including a first connection point, the first tuning circuit being coupled between the first connection point and the floor; The antenna further includes a third tuning circuit. The second radiator includes a fourth connection point and a fifth connection point. A fourth gap is formed between the fourth connection point and the fifth connection point in the second radiator. The third tuning circuit is coupled between the fourth connection point and the fifth connection point. When the foldable electronic device is in a folded state, the fourth slit is aligned with the second slit; wherein, when the foldable electronic device is in the unfolded state, the first radiator is used to generate a first resonance, the resonant frequency band of the first resonance includes a satellite communication frequency band, and wherein, the first radiator, the second radiator, the first tuning circuit and the third tuning circuit are used to generate the radiation pattern of the antenna.

5. The foldable electronic device according to claim 4, characterized in that, The distance between the fourth connection point and the fourth gap is less than or equal to 5 mm; or... The distance between the fifth connection point and the fourth gap is less than or equal to 5 mm.

6. The foldable electronic device according to claim 4 or 5, characterized in that, The fourth connection point is located between the third position and the fourth gap, and the fifth connection point is located between the fourth position and the fourth gap; The first connection point is located between the third position and the fourth connection point, and the distance between the fourth connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm; or, The first connection point is located between the fourth position and the fifth connection point, and the distance between the fifth connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm.

7. The foldable electronic device according to any one of claims 4 to 6, characterized in that, When the foldable electronic device is in a folded state, the third gap is aligned with the first gap.

8. The foldable electronic device according to any one of claims 4 to 7, characterized in that, The minimum distance between the second radiator and the first rotating shaft is less than or equal to one-quarter of the length of the second radiator.

9. A foldable electronic device, characterized by include: The first shell, the second shell, and the floor, wherein... The first housing includes a first frame, and the second housing includes a second frame, wherein the first frame is at least partially spaced from the floor, and the second frame is at least partially spaced from the floor. The first frame includes a first position and a second position, the first position and the second position are located on a first side of the first frame, the first frame has a first gap at the second position, and the first frame is coupled to the floor at the first position; The second frame includes a third position and a fourth position, which are located on the second side of the second frame. When the foldable electronic device is in the unfolded state, the first side and the second side are both the top or bottom side of the foldable electronic device. A first rotating shaft is located between the first housing and the second housing, and is rotatably connected to both the first housing and the second housing; and Antenna, the antenna comprising: A first radiator and a second radiator, wherein the first radiator is a conductive portion of a first border between the first position and the second position, and the second radiator is a conductive portion of the second border between the third position and the fourth position; and A feeding circuit, wherein the first radiator includes a feeding point, and the feeding circuit is coupled to the feeding point; A first tuning circuit, the second radiator including a first connection point, the first tuning circuit being coupled between the first connection point and the floor; The antenna further includes a second tuning circuit. The first radiator includes a second connection point and a third connection point. A second gap is formed between the second connection point and the third connection point in the first radiator. The second tuning circuit is coupled between the second connection point and the third connection point. When the foldable electronic device is in the unfolded state, the first radiator is used to generate a first resonance, the resonant frequency band of the first resonance includes the satellite communication frequency band, and the first radiator, the second radiator and the first tuning circuit are used to generate the radiation pattern of the antenna.

10. The foldable electronic device of claim 9, wherein, The second frame has a third gap and a fourth gap at the third and fourth positions; when the foldable electronic device is in a folded state, the third gap is aligned with the first gap, and the fourth gap is aligned with the second gap.

11. The foldable electronic device of claim 10, wherein, The antenna further includes a third tuning circuit, the second radiator includes a fourth connection point, and the third tuning circuit is coupled between the fourth connection point and the ground. The first radiator, the second radiator, the first tuning circuit, and the third tuning circuit are used to generate the radiation pattern of the antenna.

12. The foldable electronic device according to claim 9, characterized in that, Based on the fact that the foldable electronic device is in the unfolded state, the fourth position is located between the second position and the third position; The second frame has a third gap at the third position, and the second frame is coupled to the floor at the fourth position.

13. The foldable electronic device of claim 12, wherein, When the foldable electronic device is in a folded state, the third gap is aligned with the first gap.

14. The foldable electronic device according to claim 12, characterized in that, The antenna also includes a third tuning circuit; The second radiator includes a fourth connection point and a fifth connection point. A fourth gap is formed between the fourth connection point and the fifth connection point. The third tuning circuit is coupled between the fourth connection point and the fifth connection point. The first radiator, the second radiator, the first tuning circuit, and the third tuning circuit are used to generate the radiation pattern of the antenna.

15. The foldable electronic device of claim 14, wherein, When the foldable electronic device is in a folded state, the fourth gap is aligned with the first gap, and the third gap is aligned with the second gap.

16. The foldable electronic device according to claim 14 or 15, characterized in that, The distance between the fourth connection point and the fourth gap is less than or equal to 5 mm; or... The distance between the fifth connection point and the fourth gap is less than or equal to 5 mm.

17. The foldable electronic device according to any one of claims 14 to 16, characterized in that, The fourth connection point is located between the third position and the fourth gap, and the fifth connection point is located between the fourth position and the fourth gap; The first connection point is located between the third position and the fourth connection point, and the distance between the fourth connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm; or, The first connection point is located between the fourth position and the fifth connection point, and the distance between the fifth connection point and the first connection point is greater than or equal to 0 mm and less than or equal to 5 mm.

18. The foldable electronic device according to any one of claims 9 to 17, characterized in that, The minimum distance between the second radiator and the first rotating shaft is less than or equal to one-quarter of the length of the second radiator.

19. The foldable electronic device according to any one of claims 1 to 18, characterized in that, When the foldable electronic device is in the unfolded state, the maximum radiation direction of the antenna pattern is related to the second radiator and the first tuning circuit.

20. The foldable electronic device according to any one of claims 1 to 19, characterized in that, The antenna operates in the satellite communication frequency band. When the foldable electronic device is in the unfolded state, the maximum radiation direction of the radiation pattern generated by the antenna is the first direction. When the foldable electronic device is in the folded state, the maximum radiation direction of the radiation pattern generated by the antenna is the second direction, and the angle between the first direction and the second direction is less than or equal to 30°.

21. The foldable electronic device according to any one of claims 1 to 20, characterized in that, When the foldable electronic device is in the unfolded state, the first tuning circuit and the second radiator are used to generate parasitic resonance, and the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 200MHz.

22. The foldable electronic device according to any one of claims 1 to 21, characterized in that, When the foldable electronic device is in the unfolded state, the antenna generates an efficiency dip at a first frequency point, and the frequency difference between the resonant frequency of the first resonance and the first frequency point is less than or equal to 200MHz.

23. The foldable electronic device according to claim 21, characterized in that, When the foldable electronic device is in the unfolded state, the difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 50MHz.

24. The foldable electronic device according to any one of claims 1 to 23, characterized in that, When the foldable electronic device is in the unfolded state, the antenna generates an efficiency dip at a first frequency point, and the frequency difference between the resonant frequency of the first resonance and the first frequency point is less than or equal to 50MHz.

25. The foldable electronic device according to any one of claims 1 to 24, characterized in that, When the foldable electronic device is in the unfolded state, the first radiator is used to generate a main resonance, and the first tuning circuit and the second radiator are used to generate a parasitic resonance. The resonance point of the parasitic resonance is located within the resonance frequency band of the main resonance, and the main resonance and the parasitic resonance together form the first resonance.

26. The foldable electronic device of any of claims 21, 23, or 25, wherein, The resonant frequency of the first resonance is higher than the resonant frequency of the parasitic resonance.

27. The foldable electronic device of any of claims 21, 23, or 25, wherein, The resonant frequency of the first resonance is lower than the resonant frequency of the parasitic resonance.

28. The foldable electronic device of claim 22 or 24, wherein, The resonant frequency of the first resonance is higher than the first frequency.

29. The foldable electronic device of claim 22 or 24, wherein, The resonant frequency of the first resonance is lower than the first frequency.

30. The foldable electronic device of any of claims 1-29, wherein, When the foldable electronic device is in a folded state, the first radiator is used to generate the first resonance, and the first tuning circuit and the second radiator are used to generate a parasitic resonance of the first resonance.

31. The foldable electronic device according to claim 30, characterized in that, The difference between the resonant frequency of the first resonance and the resonant frequency of the parasitic resonance is less than or equal to 200MHz.

32. The foldable electronic device according to any one of claims 1 to 31, characterized in that, The ratio of the dimension of the floor in the unfolded state to that in the folded state along the extension direction of the first side is greater than or equal to 1.8 and less than or equal to 2.

2.

33. The foldable electronic device of any of claims 1-32, wherein, The first frame also includes a fifth position, which is located between the second position and the pivot, and the first frame is coupled to the floor at the fifth position; The antenna further includes a third radiator, which is a conductive portion of the first frame between the second position and the fifth position; When the foldable electronic device is in the unfolded state, the third radiator is used to generate a second resonance, the resonant frequency of the second resonance being higher than the resonant frequency of the first resonance.

34. The foldable electronic device according to any one of claims 1 to 33, characterized in that, The foldable electronic device also includes a third housing and a second pivot. Wherein, the second rotating shaft is located between the second housing and the third housing, and the second rotating shaft is rotatably connected to both the second housing and the third housing; or, The second rotating shaft is located between the first housing and the third housing, and the second rotating shaft is rotatably connected to both the first housing and the third housing.

35. The foldable electronic device according to claim 34, characterized in that, The third housing includes a third frame, which is at least partially spaced from the floor. The third frame has a fifth position and a sixth position, with the fifth position located on the third side of the third frame. When the foldable electronic device is in the unfolded state, the first side, the second side, and the third side are the same side of the foldable electronic device. The antenna further includes a third radiator and a fourth tuning circuit. The third radiator is a conductive portion of a third frame between the fifth position and the sixth position. The third radiator includes a sixth connection point. The fourth tuning circuit is coupled between the sixth connection point and the ground plane.

36. The foldable electronic device according to claim 35, characterized in that, The second rotating shaft is located between the second housing and the third housing, and the first radiator is used to generate the first resonance; When the foldable electronic device is in the unfolded state, at the resonance point of the first resonance, the current on the first radiator and the current on the second radiator are in the same direction, and the current on the first radiator and the current on the third radiator are in opposite directions.

37. The foldable electronic device according to claim 36, characterized in that, The second rotating shaft is located between the first housing and the third housing, and the first radiator is used to generate the first resonance; When the foldable electronic device is in the unfolded state, at the resonance point of the first resonance, the currents on the first radiator, the second radiator, and the third radiator are in the same direction.

38. The foldable electronic device according to any one of claims 1 to 37, characterized in that, The foldable electronic device performs at least one of the following services in the satellite communication frequency band: receiving and / or sending short messages via satellite, making and / or answering phone calls via satellite, and receiving satellite data.

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