Electronic equipment

Abstract

The embodiment of the invention provides electronic equipment. The electronic equipment comprises an antenna. According to the antenna, adjacent conductor parts on a frame serve as two radiators. The antenna further comprises a coupling connecting piece which is connected with one short radiating body and extends towards the other long radiating body. The antenna has good radiation efficiency in a working frequency band.

Description

TECHNICAL FIELD

[0001] The application relates to the field of wireless communication, in particular to an electronic device. BACKGROUND

[0002] With the increasing demand for high-speed data transmission, the development trend of the industrial design (ID) of electronic devices is large screen ratio and multiple cameras. This results in a significant reduction in antenna clearance and increasingly limited layout space.

[0003] Under the current situation, the communication frequency bands of electronic devices will coexist with 3th generation wireless systems (3G), 4th generation wireless systems (4G) and 5th generation wireless systems (5G) frequency bands for a long time, and the number of required antennas is increasing. Based on these changes, the efficiency improvement of the antennas on the electronic device has become a top priority. SUMMARY

[0004] The application provides an electronic device comprising an antenna. The antenna has two radiators which are adjacent conductor parts on the frame. The antenna further comprises a coupling connector connected to one of the shorter radiators and extending to the other longer radiator. The antenna has good radiation efficiency in the working frequency band.

[0005] In a first aspect, an electronic device is provided, comprising: a first housing comprising a first bezel, a second housing comprising a second bezel; the first bezel comprising a first position and a second position, the first bezel being coupled with or having an insulating gap with the floor at the first position, the first bezel being coupled with or having an insulating gap with the floor at the second position; the second bezel comprising a third position, a fourth position and a fifth position arranged in sequence, the second bezel being coupled with the floor at the third position, the second bezel having a first insulating gap at the fourth position, the second bezel having a second insulating gap at the fifth position; a first hinge located between the first housing and the second housing, and the first hinge being rotatably connected with the first housing and the second housing, respectively; and an antenna comprising: a first radiator comprising a conductive part of the first bezel between the first position and the second position, at least part of the first radiator being spaced apart from the floor, a second radiator comprising a conductive part of the second bezel between the third position and the fourth position, at least part of the second radiator being spaced apart from the floor, a third radiator comprising a conductive part of the second bezel between the fourth position and the fifth position, at least part of the third radiator being spaced apart from the floor, a length L1 of the second radiator and a length L2 of the third radiator satisfying: L1 < L2, a coupling connector, a first end of the coupling connector extending towards the third radiator and being spaced apart from the third radiator, a second end of the coupling connector being connected with a first end of the second radiator, the first end of the second radiator and the first end of the third radiator being opposite and not in contact with each other through the first insulating gap, and a feeding circuit, the first radiator comprising a feeding point, the feeding circuit being coupled with the feeding point, the feeding circuit being configured to transmit a radio frequency signal of a first frequency band, wherein, based on the electronic device being in a folded state, the first radiator at least partially overlaps with the second radiator and / or the third radiator in a first direction, the first direction being a thickness direction of the electronic device.

[0006] According to embodiments of the present application, the second radiator and the third radiator can jointly form a parasitic branch of a metamaterial structure, and the medium loss near the parasitic branch of the metamaterial structure is reduced, so that the radiation characteristics (e.g., system efficiency and radiation efficiency) of the antenna can be effectively improved.

[0007] A distributed capacitance can be formed between the coupling connector and the third radiator, and the equivalent capacitance value of the first insulating gap can be adjusted, so that the radiation characteristics (e.g., the resonance point frequency of the parasitic resonance generated by the parasitic branch) of the antenna can be adjusted.

[0008] Due to the distributed capacitance formed between the coupling connector and the third radiator, the electric field at the first insulating gap is dispersed to the space between the coupling connector and the third radiator, and is not concentrated at the first insulating gap, so that the dielectric loss can be further reduced, and the radiation characteristics (for example, radiation efficiency) of the antenna can be improved.

[0009] In addition, since the second end of the second radiator is a ground end, the second radiator has stronger current than the third radiator, and the length of the second radiator is smaller than the length of the third radiator (it is difficult to excite the third radiator when the coupling connector is not arranged), the third radiator can be coupled to more energy through the coupling connector, so as to better excite the third radiator, and the radiation characteristics (for example, radiation efficiency) of the antenna can be improved.

[0010] With reference to the first aspect, in some implementations of the first aspect, the length L1 of the second radiator and the length L2 of the third radiator satisfy: L1≤(2 / 3)×L2.

[0011] According to the embodiments of the present application, the length of the third radiator can be much larger than the length of the second radiator.

[0012] With reference to the first aspect, in some implementations of the first aspect, the electronic device further includes a component opposite to the second bezel and not in contact with the second bezel, the distance between the component and the second bezel is less than or equal to 1 mm; and the coupling connector is located between the component and the second bezel.

[0013] According to the embodiments of the present application, when the layout in the electronic device includes a component close to the second radiator and the third radiator, the gap between the component and the second bezel is small, and therefore, in this case, it is difficult to arrange a sub-board for placing an element coupled between the second radiator and the third radiator. However, the coupling connector provided in the embodiments of the present application occupies a small space, and is convenient to arrange between the component and the second bezel, and does not need to additionally arrange a sub-board.

[0014] With reference to the first aspect, in some implementations of the first aspect, the electronic device further includes a battery, and the battery is located in the space enclosed by the component.

[0015] With reference to the first aspect, in some implementations of the first aspect, the length of the coupling connector along the second direction is greater than or equal to 40 mm and less than or equal to 150 mm, and the second direction is the extension direction of the third radiator.

[0016] With reference to the first aspect, in some implementations of the first aspect, the second radiator and the third radiator are configured to generate a first parasitic resonance; and the coupling connector has an electrical length along a second direction that is less than or equal to one quarter of a first wavelength, the first wavelength being a wavelength corresponding to the first parasitic resonance, the second direction being a direction in which the third radiator extends.

[0017] With reference to the first aspect, in some implementations of the first aspect, a width of the coupling connector at the second end and at the position where the second radiator is connected is greater than or equal to 1 mm and less than or equal to 3 mm.

[0018] With reference to the first aspect, in some implementations of the first aspect, a dimension of the coupling connector along the first direction is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0019] According to embodiments of the present application, an equivalent capacitance is formed between the coupling connector and the third radiator. In one embodiment, the equivalent capacitance formed between the coupling connector and the third radiator has a capacitance value greater than or equal to 1 pF. In one embodiment, the equivalent capacitance formed between the coupling connector and the third radiator has a capacitance value less than or equal to 3 pF. By adjusting the capacitance value of the equivalent capacitance formed between the coupling connector and the third radiator, the amount of coupling between the second radiator and the third radiator can be determined, thereby the current on the second radiator when the third radiator generates resonance can be changed, so that the antenna has different radiation characteristics (e.g., resonance point frequency of parasitic resonance, radiation efficiency, etc.).

[0020] With reference to the first aspect, in some implementations of the first aspect, the third end of the coupling connector is coupled to the ground plane.

[0021] According to embodiments of the present application, since the second end of the coupling connector is connected to the first end of the second radiator and the third end of the coupling connector is coupled to the ground plane, a distributed inductance can be formed between the second end and the third end of the coupling connector.

[0022] The first end of the second radiator is coupled with the ground plate through the coupling connector (distributed inductance), so that when the second radiator generates a parasitic resonance, the current on the second radiator is shunted in the area near the first end of the second radiator. Due to the shunting in the area near the first end of the second radiator, the current density on the parasitic branch (the second radiator and the third radiator) can be dispersed. In an embodiment, the current distribution on the parasitic branch (the second radiator and the third radiator) is relatively more dispersed, thereby reducing the conductor loss of the parasitic branch (the second radiator and the third radiator). In an embodiment, the current distribution on the parasitic branch (the second radiator and the third radiator) is relatively more dispersed, which can increase the radiation aperture of the parasitic branch (the second radiator and the third radiator). Due to the reduced conductor loss of the parasitic branch (the second radiator and the third radiator) and the increased radiation aperture, the radiation characteristics (for example, system efficiency and radiation efficiency) of the antenna can be improved.

[0023] With reference to the first aspect, in some implementations of the first aspect, the first radiator is configured to generate a first resonance, a resonance frequency band of the first resonance includes the first frequency band; the second radiator and the third radiator are configured to generate a first parasitic resonance, a resonance point frequency of the first parasitic resonance is higher than a resonance point frequency of the first resonance, and the first parasitic resonance is configured to improve the radiation efficiency of the antenna in the first frequency band.

[0024] With reference to the first aspect, in some implementations of the first aspect, the coupling connector and the second bezel are integrally formed.

[0025] According to the embodiments of the present application, the coupling connector and the second bezel can be milled from the same metal piece, thereby reducing the error during assembly, and thereby improving the radiation characteristics (for example, bandwidth) of the antenna.

[0026] With reference to the first aspect, in some implementations of the first aspect, the coupling connector and the ground plate do not overlap in the first direction.

[0027] With reference to the first aspect, in some implementations of the first aspect, the first bezel is coupled with the ground plate at the first position, and the first bezel has a third insulating gap at the second position; the antenna further includes an element, the first radiator includes a first connection point and a second connection point, and the element is coupled between the first connection point and the second connection point, and the first radiator has a third insulating gap at the first connection point and the second connection point.

[0028] According to the embodiment of the present application, the first radiator is a structure with one end being a ground end and the other end being an open end. Moreover, the fourth insulating gap opened by the first radiator can be regarded as an equivalent capacitor (for example, a distributed capacitor) arranged on the first radiator, and similarly, the first radiator can also form a metamaterial structure

[0029] In a second aspect, an electronic device is provided, including: a ground plate; a first frame including a first position, a second position and a third position arranged in sequence, the first frame being coupled with the ground plate at the first position, the first frame having a first insulating gap at the second position, and the first frame being coupled with the ground plate or having an insulating gap at the third position; an antenna including: a first radiator including a conductive part of the first frame between the first position and the second position, and a second radiator including a conductive part of the first frame between the second position and the third position, a length D1 of the first radiator and a length D2 of the second radiator satisfying: D1 < D2, and the first radiator and the second radiator being arranged spaced apart from the ground plate; a coupling connector, a first end of the coupling connector extending to the second radiator and being arranged spaced apart from the second radiator, and a second end of the coupling connector being connected with a first end of the first radiator, the first end of the first radiator and the first end of the second radiator being opposite and not in contact with each other through the first insulating gap; a feeding circuit, the first radiator including a feeding point, and the feeding circuit being coupled with the feeding point, the feeding circuit transmitting radio frequency signals of a first frequency band and a second frequency band, a frequency of the first frequency band being lower than a frequency of the second frequency band.

[0030] With reference to the second aspect, in some implementations of the second aspect, the length D1 of the first radiator and the length D2 of the second radiator satisfy: D1 ≤ (2 / 3) × D2.

[0031] With reference to the second aspect, in some implementations of the second aspect, the electronic device further includes a component, the component being opposite and not in contact with the first frame, and a distance between the component and the first frame being less than or equal to 1 mm.

[0032] With reference to the second aspect, in some implementations of the second aspect, the electronic device further includes a battery, the battery being located in a space enclosed by the component.

[0033] With reference to the second aspect, in some implementations of the second aspect, a length of the coupling connector along a first direction is greater than or equal to 2 mm and less than or equal to 10 mm, the first direction being an extension direction of the second radiator.

[0034] With reference to the second aspect, in some implementations of the second aspect, the second radiator is configured to generate a first parasitic resonance and the second parasitic resonance, a resonance point frequency of the first parasitic resonance is lower than a resonance point frequency of the second parasitic resonance; and the coupling connector has an electrical length in a first direction that is less than or equal to one quarter of a first wavelength, the first wavelength being a wavelength corresponding to the first parasitic resonance, the first direction being an extension direction of the second radiator.

[0035] With reference to the second aspect, in some implementations of the second aspect, a width of the second end of the coupling connector and the first-radiator-connection position is greater than or equal to 1 mm and less than or equal to 3 mm.

[0036] With reference to the second aspect, in some implementations of the second aspect, a dimension of the coupling connector in a second direction is greater than or equal to 0.5 mm and less than or equal to 2 mm, the second direction being a thickness direction of the electronic device.

[0037] With reference to the second aspect, in some implementations of the second aspect, the third end of the coupling connector is coupled to the ground plate.

[0038] With reference to the second aspect, in some implementations of the second aspect, the first radiator is configured to generate a first resonance and a second resonance, a resonance frequency band of the first resonance includes the first frequency band, a resonance frequency band of the second resonance includes the second frequency band; and the second radiator is configured to generate a first parasitic resonance and the second parasitic resonance, a resonance point frequency of the first parasitic resonance is higher than a resonance point frequency of the first resonance, a resonance point frequency of the second parasitic resonance is within the resonance frequency band of the second resonance, the first parasitic resonance is configured to improve a radiation efficiency of the antenna in the first frequency band, and the second parasitic resonance is configured to improve a radiation efficiency of the antenna in the second frequency band.

[0039] With reference to the second aspect, in some implementations of the second aspect, the coupling connector and the first bezel are integrally formed.

[0040] With reference to the second aspect, in some implementations of the second aspect, the coupling connector and the ground plate do not overlap in a second direction, the second direction being a thickness direction of the electronic device.

[0041] With reference to the second aspect, in some implementations of the second aspect, the first bezel is coupled to the ground plate at the third position. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0043] Figure 2 is a schematic structural diagram of a foldable electronic device 100 provided by an embodiment of the present application.

[0044] Figure 3 is a schematic structural diagram of the foldable electronic device 100 in an outer folding state.

[0045] Figure 4 is a schematic structural diagram of the foldable electronic device 100 in a possible unfolded state.

[0046] Figure 5 is a schematic structural diagram of the foldable electronic device 100 in a possible folded state.

[0047] Figure 6 is a schematic structural diagram of the foldable electronic device 100 in a possible partially unfolded state.

[0048] Figure 7 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0049] Figure 8 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0050] Figure 9 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0051] Figure 10 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0052] Figure 11 is Figure 10 is a simulation result of an S parameter of an antenna 200 in the electronic device 100 shown in FIG. 11.

[0053] Figure 12 is Figure 10 is a simulation result of system efficiency and radiation efficiency of the antenna 200 in the electronic device 100 shown in FIG. 11, without the coupling connector.

[0054] Figure 13 is Figure 10 is a simulation result of system efficiency and radiation efficiency of the antenna 200 in the electronic device 100 shown in FIG. 11, with the coupling connector.

[0055] Figure 14 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0056] Figure 15 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0057] Figure 16FIG. 1 is a schematic diagram of an electronic device 100 according to an embodiment of the present application.

[0058] Figure 17 FIG. 2 is a schematic diagram of an antenna 200 according to an embodiment of the present application. Figure 14 FIG. 3 is a simulation result of the system efficiency and the radiation efficiency of the antenna 200 in the electronic device 100 shown in FIG. 1 in a first frequency band.

[0059] Figure 18 FIG. 4 is a simulation result of the system efficiency and the radiation efficiency of the antenna 200 in the electronic device 100 shown in FIG. 1 in a second frequency band. Figure 14 FIG. 5 is a simulation result of the system efficiency and the radiation efficiency of the antenna 200 in the electronic device 100 shown in FIG. 1 in a third frequency band. DETAILED DESCRIPTION

[0060] Hereinafter, the terms that can appear in the embodiments of the present application are explained.

[0061] It should be understood that the term "and / or" used herein is only to describe the same field of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0062] "Within the range" used in the present application, by default, includes both end values of the range, unless it is indicated separately that the end values are not included, for example, within the range of 1 to 5, including both 1 and 5.

[0063] Coupling: can be understood as direct coupling and / or indirect coupling. "Coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which means that the components are in physical contact and electrically conductive. It can also be understood as a form of connection between different components in the circuit structure through the signal-transmissible entity lines such as copper foil or wire of the printed circuit board (PCB). "Indirect coupling" can be understood as electrical conduction through space / non-contact between two conductors. In an embodiment, indirect coupling can also be referred to as capacitive coupling, for example, through the coupling between the gap between two conductive parts to form an equivalent capacitor to realize signal transmission.

[0064] Element / device: includes at least one of lumped element / device and distributed element / device.

[0065] Lumped element / device: refers to a general term for all elements when the size of the element is much smaller than the relative wavelength of the circuit operating frequency. For a signal, the characteristics of the element always remain fixed regardless of the frequency. Lumped element / device can include lumped capacitance, lumped inductance, etc.

[0066] distributed element / device: unlike lumped elements, when a signal passes through an element, the characteristics of the element at each point will vary with the signal, and the element as a whole cannot be considered a single body with fixed characteristics, and is therefore referred to as a distributed element. Distributed elements / devices can include distributed capacitance, distributed inductance, etc.

[0067] capacitance: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance includes components that exhibit capacitance, such as a capacitor element; distributed capacitance (or distributed capacitance) includes an equivalent capacitance formed by two conductive pieces separated by a gap.

[0068] inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance includes components that exhibit inductance, such as an inductor element; distributed inductance (or distributed inductance) includes an equivalent inductance formed by a length of conductive material, such as an equivalent inductance formed by a conductor being coiled or twisted.

[0069] radiating body: is a device in an antenna for receiving / transmitting electromagnetic wave radiation. In some cases, "antenna" is understood in a narrow sense as a radiating body, which converts guided wave energy from a 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 radiating body via a feed line, which is converted into electromagnetic wave energy of a certain polarization by the radiating body, and is radiated in a desired direction. The receiving radiating body converts electromagnetic wave energy of a certain polarization from a certain direction in space into modulated high-frequency current energy, which is delivered to the input of the receiver via a feed line.

[0070] The radiator can include a conductor with a specific shape and size, such as a line shape, or a patch shape, etc. The application does not limit the specific shape. In an embodiment, the line shape radiator can be referred to as a line antenna. In an embodiment, the line shape radiator can be implemented by a conductive frame, which can also be referred to as a frame antenna. In an embodiment, the line shape radiator can be implemented by a support conductor, which can also be referred to as a support antenna. In an embodiment, the line diameter (e.g., including thickness and width) of the line shape radiator, or the radiator of the line antenna, is much smaller (e.g., less than 1 / 16 of the wavelength) than the wavelength (e.g., the medium wavelength), and the length can be comparable to the wavelength (e.g., the medium wavelength) (e.g., the length is around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of the line antenna include a dipole antenna, a half-wave vibrator antenna, a monopole antenna, a loop antenna, and an inverted F antenna (also referred to as IFA). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feed from the feed end of the radiating branch. For example, the inverted F antenna (IFA) can be regarded as being obtained by adding a ground path to a monopole antenna. The IFA antenna has a feed point and a ground point, and is called an inverted F antenna because its side view is in the shape of an inverted F. In an embodiment, the patch shape radiator can include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also referred to as PIFA). In an embodiment, the patch shape radiator can be implemented by a planar conductor (e.g., a conductive sheet or a conductive coating, etc.). In an embodiment, the patch shape radiator can include a conductive sheet, such as a copper sheet, etc. In an embodiment, the patch shape radiator can include a conductive coating, such as silver paste, etc. The shape of the patch shape radiator includes a circular shape, a rectangular shape, a loop shape, etc. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator, and a ground plate, wherein the dielectric substrate is arranged between the radiator and the ground plate.

[0071] The radiators can also include slots or gaps formed on the conductors, such as closed or semi-closed slots or gaps on the grounded conductor plane. In one embodiment, the radiators with slots or gaps can be referred to as slot antennas or gap antennas. In one embodiment, the slots or gaps of the slot / gap antennas have a radial dimension (e.g., including width) much smaller than the wavelength (e.g., dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and a length dimension comparable to the wavelength (e.g., dielectric wavelength) (e.g., around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, the radiators with closed slots or gaps can be referred to as closed slot antennas. In one embodiment, the radiators with semi-closed slots or gaps (e.g., with openings added to the closed slots or gaps) can be referred to as open slot antennas. In some embodiments, the gap shape is long and thin. In some embodiments, the length of the gap is about half of the wavelength (e.g., dielectric wavelength). In some embodiments, the length of the gap is about an integer multiple of the wavelength (e.g., one dielectric wavelength). In some embodiments, the gap can be fed by a transmission line that is connected across one or both sides of the gap, whereby the gap is excited with a radio frequency electromagnetic field and radiates electromagnetic waves into space. In one embodiment, the radiators of the slot / gap antennas can be implemented by conductive frames that are grounded at both ends, which can also be referred to as frame antennas. In this embodiment, the slot / gap antennas can be considered to include linear radiators that are spaced apart from the ground plane and grounded at both ends, thereby forming closed or semi-closed slots or gaps. In one embodiment, the radiators of the slot / gap antennas can be implemented by bracket conductors that are grounded at both ends, which can also be referred to as bracket antennas.

[0072] The feed circuit is a circuit for receiving and / or transmitting radio frequency signals. The feed circuit can include a transceiver and a radio frequency front end circuit. In some cases, the term "feed circuit" is used in a narrow sense to refer to a radio frequency integrated circuit (RFIC), which can be considered to include a radio frequency front end circuit (or radio frequency front end chip) and a transceiver. The feed circuit has the function of converting radio waves (e.g., radio frequency signals) and signals (e.g., digital signals). In general, it is considered to be part of the radio frequency.

[0073] In some embodiments, the electronic device can also include a test seat (or referred to as a radio frequency seat or a radio frequency test seat). The test seat can be used to insert a coaxial cable to test the characteristics of the radio frequency front end circuit or the radiators of the antenna through the cable. The radio frequency front end circuit can be considered to be a circuit portion coupled between the test seat and the transceiver.

[0074] In some embodiments, the radio frequency front-end circuit can be integrated as a radio frequency front-end chip in the electronic device, or the radio frequency front-end circuit and the transceiver can be integrated as a radio frequency chip in the electronic device.

[0075] It should be understood that any two feeding circuits in the first / second / … / Nth feeding circuit in the present application can include the same transceiver, for example, one transmitting channel in one transceiver as the first feeding circuit and one receiving channel in the same transceiver as the second feeding circuit, or for example, the first receiving channel in one transceiver as the first feeding circuit and the second receiving channel in the same transceiver as the second feeding circuit; any two feeding circuits in the first / second / … / Nth feeding circuit in the present application can also include the same radio frequency front-end circuit, for example, signals are processed through the tuning circuit or the amplifier in one radio frequency front-end circuit.

[0076] It should also be understood that the two feeding circuits in the first / second / … / Nth feeding circuit in the present application generally correspond to two radio frequency test seats in the electronic device.

[0077] The matching circuit is a circuit for adjusting the radiation characteristics of the antenna. In one embodiment, the matching circuit is coupled between the feeding circuit and the corresponding radiator. In one embodiment, the matching circuit is coupled between the test seat and the radiator. Generally, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit can include tuning circuits and / or elements, and the tuning circuit can be an element for switching the coupling connection of the radiator. The matching circuit has the functions of impedance matching and / or frequency tuning. Generally, it is considered as part of the antenna.

[0078] The ground structure / feeding structure can include connectors, such as metal springs, and the radiator is coupled to the ground plane through the ground structure / the feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure can include a transmission line / feeding line, and the ground structure can include a ground line.

[0079] End / point: the "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator should not be understood as a point or end physically disconnected from other radiators, but can also be considered as a point or section on a continuous radiator. In one embodiment, the "end / point" can include the connection / coupling area on the antenna radiator that is coupled to other conductive structures, for example, the feeding end / feeding point can be the connection / coupling area (for example, the area facing a part of the feeding circuit) on the antenna radiator that is coupled to the feeding structure or the feeding circuit, and for example, the grounding end / grounding point can be the connection / coupling area (for example, the area facing a part of the grounding circuit) on the antenna radiator that is coupled to the grounding structure or the grounding circuit.

[0080] Open end, closed end: In some embodiments, open end and closed end are for example relative to ground, closed end is grounded, open end is not grounded. In some embodiments, open end and closed end are for example relative to other conductors, closed end is electrically connected to other conductors, open end is not electrically connected to other conductors. In one embodiment, open end can also be referred to as floating end, free end, open end, or open circuit end. In one embodiment, closed end can also be referred to as grounded end, or short circuit end. It should be appreciated that in some embodiments, other conductors can be coupled through open end to transfer coupling energy (which can be understood as transferring current).

[0081] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution, closed end or grounded end, etc. can be understood as a current large point on the radiator, or as a small point of electric field on the radiator; in one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the closed end can not change the current distribution characteristics of the current large point / small point of electric field; in one embodiment, opening a slot (for example, a gap filled with insulating material) at or near the closed end can not change the current distribution characteristics of the current large point / small point of electric field.

[0082] In some embodiments, the understanding of "open end" can also be from the perspective of current distribution, open end or floating end, etc. can be understood as a current small point on the radiator, or as a large point of electric field on the radiator; in one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can not change the current distribution characteristics of the current small point / large point of electric field.

[0083] It should be appreciated that the radiator end at a gap (from the structure of the radiator, similar to the radiator at the opening of the open end or floating end) coupled with electronic devices (for example, capacitors, inductors, etc.) can make the radiator end a current large point / small point of electric field, in which case it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0084] The "floating radiator" mentioned in the embodiments of the present application refers to a radiator that is not directly connected to a feed line / branch and / or a ground line / branch, but is fed and / or grounded by indirect coupling.

[0085] It should be appreciated that "floating" in "floating end" and "floating radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the floating radiator can be for example a radiator arranged on the inner surface of an insulating back cover.

[0086] The current same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side is the same direction / reverse direction. For example, when stimulating a unidirectional distributed current on a conductor that is bent or ring-shaped (for example, the current path is also bent or ring-shaped), it should be understood that, for example, the main currents stimulated on the conductors on both sides of the ring conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) are opposite in direction, which still falls within the definition of the unidirectional distributed current in the embodiments of the present application. In one embodiment, the current same direction on a conductor can refer to the current on the conductor having no reversal point. In one embodiment, the current reverse on a conductor can refer to the current on the conductor having at least one reversal point. In one embodiment, the current same direction on two conductors can refer to the current on both conductors having no reversal point and flowing in the same direction. In one embodiment, the current reverse on two conductors can refer to the current on both conductors having no reversal point and flowing in opposite directions. The current same direction / reversal on multiple conductors can be understood accordingly.

[0087] Resonance / resonance frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can generate a corresponding fundamental mode resonance.

[0088] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0089] Communication frequency band / operating frequency band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna that supports the B40 frequency band operates between 2300MHz and 2400MHz, or in other words, the antenna's operating frequency band includes the B40 frequency band. The frequency range that meets the required specifications can be considered the antenna's operating frequency band.

[0090] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may overlap one or more operating frequency bands of the antenna.

[0091] Electrical length: It can refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0092]

[0093] where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0094] 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 frequency band (resonant frequency of 1920-1980 MHz) is 1955 MHz, the operating wavelength can be the wavelength calculated using the frequency of 1955 MHz. Not limited to the center frequency, the "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0095] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (air wavelength, or vacuum wavelength) = speed of light / frequency, where the frequency is the frequency (MHz) of the radiation signal, and the speed of light can be taken as 3 x 10 8 m / s. The wavelength of the radiation signal in a medium can be calculated as follows: where ε is the relative permittivity of the medium. The wavelength in the embodiments of the present application generally 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 frequency band (resonant frequency of 1920-1980 MHz) is 1955 MHz, the wavelength can be the medium wavelength calculated using the frequency of 1955 MHz. Not limited to the center frequency, the "medium wavelength" can also refer to the medium wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band. For ease of understanding, the medium wavelength mentioned in the embodiments of the present application can be simply calculated by the relative permittivity of the medium filled on one side or multiple sides of the radiator.

[0096] Antenna system efficiency (total efficiency): refers to the ratio of the input power to the output power at the port of the antenna.

[0097] Antenna radiation efficiency (radiation efficiency): refers to the ratio of the power radiated by the antenna into space (i.e., the power of the portion effectively converted into electromagnetic waves) to the active power input to the antenna. The active power input to the antenna = input power of the antenna - loss power; the loss power mainly includes the return loss power and the ohmic loss power of the metal and / or the dielectric loss power. The radiation efficiency is a value for measuring the radiation capability of the antenna, and the metal loss and the dielectric loss are both factors affecting the radiation efficiency.

[0098] The skilled in the art can understand that the efficiency is generally expressed in percentage, and there is a corresponding conversion relationship between the efficiency and dB, and the closer the efficiency is to 0dB, the better the efficiency of the antenna is.

[0099] Antenna return loss: can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the antenna port transmission power. The smaller the signal reflected back, the greater the signal radiated to the space through the antenna, and the greater the radiation efficiency of the antenna. The greater the signal reflected back, the smaller the signal radiated to the space through the antenna, and the smaller the radiation efficiency of the antenna.

[0100] The antenna return loss can be represented by the S11 parameter, and the S11 belongs to one of the S parameters. S11 represents the reflection coefficient, and this parameter can represent the advantages and disadvantages of the antenna transmission efficiency. S11 parameter is usually negative, and the smaller the S11 parameter, the smaller the antenna return loss, the smaller the energy reflected back by the antenna itself, that is, the more the actual energy into the antenna, and the higher the system efficiency of the antenna; the larger the S11 parameter, the larger the antenna return loss, and the lower the system efficiency of the antenna.

[0101] It should be noted that the S11 value is generally-6dB as a standard in engineering, and when the S11 value of the antenna is less than-6dB, it can be considered that the antenna can work normally, or it can be considered that the transmission efficiency of the antenna is better.

[0102] Ground (GND): can refer to at least a part of any ground layer, or ground plate, or ground metal layer, etc. in an electronic device (such as a mobile phone), or at least a part of any combination of the above ground layer, or ground plate, or ground component, etc. The ground / GND can be used for the grounding of components in the electronic device, or in other words, can be used as a reference ground for components in the electronic device. Generally, a large piece of metal (for example, a metal layer) in the electronic device can be used as the ground / GND. In one embodiment, the ground / GND can include any one or more of the following: a ground layer of a circuit board of the electronic device, a ground plate formed by a middle frame of the electronic device, a ground metal layer formed by a metal film under the screen, a conductive ground layer of a battery, a metal rotating shaft of a foldable electronic device, a metal back cover of the electronic device (for example, at least a part of the back cover is made of metal), and a conductive or metal component that is electrically connected to the above ground layer / ground plate / ground metal layer. In one embodiment, the circuit board can be a printed circuit board (PCB), for example, an 8-layer, 10-layer, or 12-14 layer board with 8, 10, 12, 13, or 14 layers of conductive material, or elements separated and electrically insulated by a dielectric or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a ground layer, and a wiring layer, and the wiring layer and the ground layer are electrically connected by a via. In one embodiment, components such as a display, a touch screen, an input button, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC), etc. can be mounted on or connected to the circuit board; or electrically connected to the wiring layer and / or the ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0103] Any ground layer, or ground plate, or ground metal layer described above is made of a conductive material. In one embodiment, the conductive material can be any one of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate, and tin-plated copper, graphite powder impregnated cloth, graphite coated substrate, copper plated substrate, brass plated substrate, and aluminum plated substrate. Those skilled in the art can understand that the ground layer / ground plate / ground metal layer can also be made of other conductive materials.

[0104] Grounding: refers to coupling with the above ground / GND through a grounding structure and / or a grounding circuit. In one embodiment, the grounding can be physical grounding, for example, physical grounding at a specific position on the frame through a part of the structure of the middle frame (or referred to as physical ground). In one embodiment, the grounding can be device grounding, for example, device grounding through capacitors / inductors / resistors in series or parallel (or referred to as device ground).

[0105] The technical solutions of the embodiments of the present application will be described below with reference to the drawings.

[0106] As shown in Figure 1 The electronic device 100 can include a cover 13, a display module 15, a printed circuit board (PCB) 17, a middle frame 19, and a rear cover 21. It should be understood that in some embodiments, the cover 13 can be a cover glass, and can also be replaced by a cover made of other materials, such as a PET (Polyethylene terephthalate) material cover, etc.

[0107] The cover 13 can be arranged close to the display module 15, and can mainly serve to protect and prevent dust from entering the display module 15.

[0108] In an embodiment, the display module 15 can include a liquid crystal display (LCD) panel, a light emitting diode (LED) display panel, or an organic light-emitting diode (OLED) display panel, etc., and the embodiments of the present application do not limit this.

[0109] The middle frame 19 mainly serves to support the entire machine. Figure 1PCB 17 is shown to be disposed between the middle frame 19 and the back cover 21. It should be appreciated that in an embodiment, the PCB 17 can also be disposed between the middle frame 19 and the display module 15, which is not limited in the embodiments of the present application. The printed circuit board PCB 17 can be made of a flame resistant material (FR-4) dielectric board, a Rogers dielectric board, a hybrid dielectric board of Rogers and FR-4, etc. Here, FR-4 is a code of a flame resistant material grade, and the Rogers dielectric board is a high frequency board. The PCB 17 carries components such as radio frequency chips, etc. In an embodiment, a metal layer can be disposed on the printed circuit board PCB 17. The metal layer can be used for grounding of the components carried on the PCB 17, and can also be used for grounding of other components such as a bracket antenna, a frame antenna, etc. The metal layer can be referred to as a ground plate, or a grounding plate, or a grounding layer. In an embodiment, the metal layer can be formed by etching metal on the surface of any one of the dielectric boards in the PCB 17. In an embodiment, the metal layer for grounding can be disposed on the printed circuit board PCB 17 close to one side of the middle frame 19. In an embodiment, the edge of the printed circuit board PCB 17 can be regarded as the edge of the grounding layer thereof. In an embodiment, the metal middle frame 19 can also be used for grounding of the components described above. The electronic device 100 can also have other ground plates / grounding plates / grounding layers, which are not described herein again.

[0110] Due to the compactness of the electronic device, the ground plates / grounding plates / grounding layers are usually disposed in the internal space of 0-2mm from the inner surface of the frame (for example, the printed circuit board, the middle frame, the screen metal layer, the battery, etc. can be regarded as part of the ground plate). In an embodiment, the filling medium is filled between the frame and the ground plate. The length and width of the rectangle surrounded by the profile of the inner surface of the filling medium can be regarded as the length and width of the ground plate; or the length and width of the rectangle surrounded by the profile of the superposition of all conductive parts inside the frame can be regarded as the length and width of the ground plate.

[0111] The electronic device 100 can further include a battery (not shown in the figure). The battery can be disposed between the middle frame 19 and the back cover 21, or can be disposed between the middle frame 19 and the display module 15, which is not limited in the embodiments of the present application. In some embodiments, the PCB 17 is divided into a main board and a sub-board, and the battery can be disposed between the main board and the sub-board. The main board can be disposed between the middle frame 19 and the upper edge of the battery, and the sub-board can be disposed between the middle frame 19 and the lower edge of the battery.

[0112] The electronic device 100 can further include a bezel 11, which can include a conductive material such as metal. The bezel 11 can be disposed between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 100. The bezel 11 can have four side edges that surround the display module 15, helping to secure the display module 15.

[0113] In an implementation, the bezel 11 mainly including a conductive material can be referred to as a conductive bezel or a metal bezel of the electronic device 100, which is suitable for an industrial design (ID) of a metal appearance. In an implementation, the outer surface of the bezel 11 is mainly of a conductive material such as a metal material, thereby forming an appearance of a metal bezel. In these implementations, the conductive portion of the bezel 11 including the outer surface can be used as an antenna radiator of the electronic device 100 and is generally referred to as a bezel antenna.

[0114] In another implementation, the outer surface of the bezel 11 is mainly of a non-conductive material such as plastic, forming an appearance of a non-metal bezel, which is suitable for a non-metal ID. In an implementation, the inner surface of the bezel 11 can include a conductive material such as a metal material. In this implementation, the conductive portion of the inner surface of the bezel 11 can be used as an antenna radiator of the electronic device 100. It should be understood that the radiator disposed on the inner surface of the bezel 11 (or the conductive material of the inner surface) can be disposed against the non-conductive material of the bezel 11 to minimize the volume occupied by the radiator and be closer to the outside of the electronic device 100 to achieve better signal transmission, and can also be referred to as a bezel antenna. It should be noted that the radiator disposed against the non-conductive material of the bezel 11 means that the radiator can be disposed against the inner surface of the non-conductive material, can be embedded in the non-conductive material, or can be disposed close to the inner surface of the non-conductive material, for example, the radiator and the inner surface of the non-conductive material can have a small gap therebetween. It should be understood that the conductive material and the non-conductive material can both be considered as part of the bezel 11.

[0115] It should be understood that the edge frame 11 can have insulating gaps, and the conductor portions of the edge frame between the insulating gaps and the insulating gaps and / or between the insulating gaps and the grounding points can serve as radiators, thereby forming an edge frame antenna (it should be understood that the radiators of the edge frame antenna can also include the conductor portions of the edge frame between the grounding points and the grounding points). In this case, when the edge frame 11 is formed of a conductive material such as metal, the insulating gap can be understood as a gap in the edge frame 11 that is filled with a non-metallic material (insulating material), and in this case, the gap is visible on the appearance surface. When the outer surface of the edge frame 11 is a non-conductive material, the insulating gap can be understood as the end portion of the inner surface of the edge frame 11 (for example, the end portion that is not electrically connected to other radiators or conductors), or as a gap formed between the radiators of the inner surface of the edge frame 11, which can be filled with a non-metallic material (insulating material), or can also not be filled with a non-metallic material, for example, filled with air, and in this case, the gap is not visible on the appearance surface.

[0116] In Figure 1 In the following embodiments, the edge frame 11 of the electronic device 100 is a metal edge frame (conductive edge frame), and the appearance surface visible gap (appearance surface visible insulating gap) is taken as an example for description. In this case, the metal edge frame serves as at least part of the antenna radiator. It should be understood that the same technical effects can also be achieved when the edge frame 11 of the electronic device 100 is a non-metal edge frame (appearance surface invisible gap), and for the sake of brevity of the discussion, it will not be repeated here.

[0117] The middle frame 19 can include the edge frame 11, and the middle frame 19 including the edge frame 11 can serve as a support for the electronic devices in the entire machine. The cover plate 13 and the back cover 21 are respectively attached along the upper and lower edges of the edge frame to form the outer shell or housing of the electronic device. In one embodiment, the cover plate 13, the back cover 21, the edge frame 11, and / or the middle frame 19 can be collectively referred to as the outer shell or housing of the electronic device 100. It should be understood that the "outer shell or housing" can be used to refer to part or all of any one of the cover plate 13, the back cover 21, the edge frame 11, or the middle frame 19, or part or all of any combination of the cover plate 13, the back cover 21, the edge frame 11, or the middle frame 19.

[0118] The edge frame 11 can at least partially serve as an antenna radiator to receive / transmit radio frequency signals, and there can be a gap between the portion of the edge frame that serves as the radiator and other portions of the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment. In one embodiment, the middle frame 19 can be provided with an aperture at the portion of the edge frame that serves as the radiator to facilitate the radiation of the antenna.

[0119] Alternatively, the frame 11 may not be considered as part of the middle frame 19. In one embodiment, the frame 11 may be connected to the middle frame 19 and formed integrally. In another embodiment, the frame 11 may include a protrusion extending inward to be connected to the middle frame 19, for example, by means of a shrapnel, screws, welding, etc. The protrusion of the frame 11 can also be used to receive feed signals, so that at least a portion of the frame 11 serves as a radiator of the antenna to receive / transmit radio frequency signals. There may be a gap between this part of the frame that serves as the radiator and the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment, so that the antenna has a good signal transmission function.

[0120] The back cover 21 can be made of metal, non-conductive materials such as glass or plastic, or a combination of conductive and non-conductive materials. In one embodiment, the conductive back cover 21 can replace the middle frame 19 and integrate with the frame 11 to support the electronic components within the device.

[0121] In one embodiment, the middle frame 19 and / or the conductive parts in the back cover 21 can serve as a reference ground for the electronic device 100, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the middle frame.

[0122] The antenna of the electronic device 100 can also be arranged in the housing, such as a bracket antenna, a millimeter wave antenna, etc. ( Figure 1 (not shown). The clearance of the antenna set in the shell can be obtained by the slits / openings on any one of the middle frame, and / or the frame, and / or the back cover, and / or the display screen, or by the non-conductive gaps / apertures formed between any of them. The clearance setting of the antenna can ensure the radiation characteristics of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive components in the electronic device 100, and the antenna radiates signals to the external space through the non-conductive area. In one embodiment, the antenna 40 can be in the form of an antenna based on a flexible printed circuit (FPC), an antenna based on laser direct structuring (LDS), or a microstrip disk antenna (MDA). In one embodiment, the antenna can also adopt a transparent structure embedded in the screen of the electronic device 100, so that the antenna is a transparent antenna unit embedded in the screen of the electronic device 100.

[0123] Figure 2FIG. 1 is a structural schematic diagram of a foldable electronic device 100 provided by an embodiment of the present application. The foldable electronic device 100 can be a mobile phone, a tablet computer, an e-reader, a notebook computer, a wearable device such as a watch, or the like electronic device having a folding function. Figure 2 The embodiment shown takes a foldable mobile phone as an example for illustration.

[0124] It should be understood that, in the Figure 1 , the electronic device 100 includes only one housing (for example, the middle frame 19 described above), in actual production or design, the electronic device 100 can also include multiple housings to form the foldable electronic device 100.

[0125] Referring to Figure 2 , the foldable electronic device 100 can include a flexible display screen 110 (which can correspond to the display module 15 in Figure 1 ), a first bezel 121 (which can correspond to the bezel 11 in Figure 1 ), a first cover 122, a second bezel 123 (which can correspond to the bezel 11 in Figure 1 ), a second cover 124, and a hinge 125. In some embodiments, the first bezel 121, the first cover 122, the second bezel 123, and the second cover 124 can form a first housing 126 (which can correspond to the middle frame 19 in Figure 1 ) and a second housing 127 (which can correspond to the middle frame 19 in Figure 1 ) supporting the flexible display screen 110. In other embodiments, at least one of the first cover 122 and the second cover 124 can include a display screen.

[0126] Figure 2 The filling of the dot matrix pattern in can schematically represent the flexible display screen 110. The flexible display screen 110 can have strong flexibility and bendability, and can provide a new interaction mode for users based on the bendable characteristics.

[0127] The flexible display screen 110 can include a first display portion 111 corresponding to the first housing 126, a second display portion 112 corresponding to the second housing 127, and a foldable display portion 113 corresponding to the hinge 125. The foldable display portion 113 can be connected between the first display portion 111 and the second display portion 112.

[0128] The first frame 121 can surround the outer periphery of the first cover 122, and at least part of the first frame 121 can also surround the outer periphery of the first display part 111. The first display part 111 can be arranged in parallel with the first cover 122 with a spacing, and the first display part 111 can be located on both sides of the first cover 122 with the first frame 121. The spacing between the first display part 111 and the first cover 122 can be used to arrange devices of the foldable electronic device 100, such as an antenna, a circuit board assembly, etc.

[0129] The second frame 123 can surround the outer periphery of the second cover 124, and at least part of the second frame 123 can also surround the outer periphery of the second display part 112. The second display part 112 can be arranged in parallel with the second cover 124 with a spacing, and the second display part 112 can be located on both sides of the second cover 124 with the second frame 123. The spacing between the second display part 112 and the second cover 124 can be used to arrange devices of the foldable electronic device 100, such as an antenna, a circuit board assembly, etc.

[0130] In an embodiment provided in the present application, the cover and the frame can be two parts of the shell of the foldable electronic device 100, and the cover and the frame can be connected, and the connection form can not belong to assembly methods such as clamping, sticking, welding, riveting, and clearance fit. The connection relationship between the cover and the frame is usually difficult to be divided. In another embodiment provided in the present application, the cover and the frame can be two different components. By assembling the cover and the frame together, the shell of the foldable electronic device 100 can be formed.

[0131] The rotating shaft 125 can be connected between the first shell 126 and the second shell 127. Under the action of the rotating shaft 125, the first shell 126 and the second shell 127 can approach or move away from each other. Correspondingly, the first display part 111 of the flexible display screen 110 and the second display part 112 of the flexible display screen 110 can approach or move away from each other, so that the flexible display screen 110 can be folded or unfolded.

[0132] In one example, the rotating shaft 125 can include a main shaft, a first connecting assembly, and a second connecting assembly, for example. The first connecting assembly can be fixed with the first cover 122, the second connecting assembly can be fixed with the second cover 124, and the first connecting assembly and the second connecting assembly can rotate relative to the main shaft. Through the mutual movement of the first connecting assembly and the second connecting assembly, the mutual movement of the first shell 126 and the second shell 127 can be driven, and the opening and closing function of the foldable electronic device 100 can be realized.

[0133] Figure 2The foldable electronic device 100 shown is currently in a possible unfolded state. In the unfolded state, the angle between the first housing 126 and the second housing 127 can be 180°, or can be referred to as a flat state. The flexible display 110 can be in a flat state as shown. Figure 2

[0134] In which the flexible display 110 is in a flat state can be understood as the angle between the first display part 111 corresponding to the first housing 126 and the second display part 112 corresponding to the second housing 127 is 180°. Due to possible errors in engineering implementation, when the angle between the first display part 111 and the second display part 112 is between 170° and 190°, the flexible display 110 can be considered to be in a flat state.

[0135] Figure 3 A possible folded state of the foldable electronic device 100 is shown. In which, Figure 3 A folded-out state of the foldable electronic device 100 is shown (the folded-out state can be referred to as an outer folded state). Figure 3 The folded-out state shown can be, for example, a left-right folded-out state or an up-down folded-out state. In the following, a possible folded state of the foldable electronic device 100 is described in conjunction with Figure 2 and Figure 3

[0136] In the embodiments of the present application, the foldable electronic device 100 in a folded state can mean that the foldable electronic device 100 is currently bent, and the degree of bending of the foldable electronic device 100 reaches the maximum. At this time, the first cover 122 and the second cover 124 can be approximately parallel, spaced apart from each other, and arranged face to face, and the spacing distance between the first cover 122 and the second cover 124 is the smallest, and at least part of the first housing 126 and the second housing 127 is accommodated in the space surrounded by the flexible display 110; the first display part 111, the first housing 126, the second housing 127, and the second display part 112 are sequentially stacked. Similarly, the first display part 111 and the second display part 112 can be approximately parallel and spaced apart from each other, and the spacing distance between the first cover 122 and the second cover 124 is smaller than the spacing distance between the first display part 111 and the second display part 112. At this time, the first display part 111 and the second display part 112 can be considered to be located on different planes.

[0137] In conjunction with Figure 2 and Figure 3 ​​When the foldable electronic device 100 is in the outward folded state, the first cover 122 and the second cover 124 can be close to each other, and the first display portion 111 and the second display portion 112 can be close to each other. The first display portion 111, the second display portion 112, and the foldable display portion 113 can form a housing area for accommodating the first cover 122, the second cover 124, and the hinge 125. In other words, the first cover 122, the second cover 124, and the hinge 125 can be accommodated in the space between the first display portion 111 and the second display portion 112.

[0138] It should be understood that the foldable electronic device 100 can be folded inward (the inward folded state can be simply referred to as the inward folded state). When the foldable electronic device 100 is in the inward folded state, the first cover 122 and the second cover 124 can be close to each other, and the first display portion 111 and the second display portion 112 can be close to each other. The first cover 122, the second cover 124 and the hinge 125 can form a housing area for accommodating the first display portion 111, the second display portion 112, and the foldable display portion 113. In other words, the first display portion 111, the second display portion 112, and the foldable display portion 113 can be accommodated in the space between the first cover 122 and the second cover 124.

[0139] The foldable electronic device 100 can switch between a folded state and an unfolded state. When the foldable electronic device 100 is in the folded state, the foldable electronic device 100 occupies a relatively small space. When the foldable electronic device 100 is in the unfolded state, the foldable electronic device 100 can display a relatively large screen to increase the user's viewing area. It should be understood that the folded state includes a closed state, in which the foldable electronic device 100 occupies the smallest space; the unfolded state includes a flattened state, in which the foldable electronic device 100 occupies the largest space.

[0140] The foldable electronic device 100 may further include a third housing 128 and a rotating shaft 129. Figure 4 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 move closer to or farther from each other. As the number of foldable parts of the foldable electronic device 100 increases, the space occupied by the foldable electronic device 100 can be further reduced in the folded state while maintaining the same screen size in the unfolded state.

[0141] And in Figure 4 In the foldable electronic device 100 shown, since it has three foldable parts (first shell 126, second shell 127 and third shell 128), the foldable electronic device 100 has at least three forms: 1. unfolded state; 2. folded state; 3. partially unfolded state.

[0142] 1. If Figure 4 FIG. 1 shows a possible unfolded state of the foldable electronic device 100. In the unfolded state, the angle between the first housing 126, the second housing 127, and the third housing 128 may be approximately 180°. The flexible display 110 may be in the unfolded state.

[0143] 2. If Figure 5 Figure 1 shows a possible folded state (tri-folded state) of the foldable electronic device 100. In the folded state, the first housing 126 and the second housing 127 rotate along the rotation axis 125, and the second housing 127 and the third housing 128 rotate along the rotation axis 129, thereby achieving the maximum degree of curvature of the foldable electronic device 100. In this state, the first housing 126, the second housing 127, and the third housing 128 can be considered to be located on different planes.

[0144] It should be understood that for the sake of simplicity, Figure 5 In the illustrated structure, the folded state of the foldable electronic device 100 is an S-fold (the side of the foldable electronic device 100 is S-shaped, and the second housing 127 is located between the first housing 126 and the third housing 128). In one embodiment, the folded state of the foldable electronic device 100 can also be a G-fold (the side of the foldable electronic device 100 is G-shaped, and the third housing 128 is located between the first housing 126 and the second housing 127). The embodiments of the present application do not limit the folding state of the foldable electronic device 100.

[0145] 3. If Figure 6 Figure 1 shows a possible partially unfolded state (two-folded state) of the foldable electronic device 100. In the partially unfolded state, the angle between the first shell 126 and the second shell 127 can be approximately 180°, and the second shell 127 and the third shell 128 rotate along the rotation axis 129, so that the third shell 128 approaches the second shell 127. In this case, the first shell 126 and the second shell 127 are considered to be located on the same plane, and the second shell 127 and the third shell 128 can be considered to be located on different planes. In another possible partially unfolded state, the angle between the third shell 128 and the second shell 127 can be approximately 180°, and the first shell 126 and the second shell 127 rotate along the rotation axis 125, so that the first shell 126 approaches the second shell 127.

[0146] Figure 1 and Figure 2 Only some components of the electronic device 100 and the foldable electronic device 100 are schematically shown, and the actual shapes, actual sizes and actual structures of these components are not limited by the above drawings.

[0147] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be considered as the front surface, the surface where the back cover is located can be considered as the back surface, and the surface where the frame is located can be considered as the side surface.

[0148] It should be understood that in the embodiments of the present application, when a user holds an electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when a user holds an electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side.

[0149] The trend in electronic devices is toward larger screen-to-body ratios and multiple cameras. This significantly reduces antenna clearance, further limiting layout space. Currently, 3G, 4G, and 5G frequency bands will coexist in electronic devices for a long time, requiring an increasing number of antennas. Improving antenna efficiency has become a pressing issue.

[0150] An embodiment of the present application provides an electronic device including an antenna. The antenna comprises two radiators formed of adjacent conductive portions on a frame. The antenna also includes a coupling member connected to one of the shorter radiators and extending to the other, longer radiator. The antenna has good radiation efficiency within its operating frequency band.

[0151] Figure 7 Schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0152] It should be understood that the electronic device 100 described in the embodiments of the present application is merely a schematic diagram, illustrating only the structure of the areas relevant to the embodiments of the present application. In actual production or design, other areas may be adjusted. For example, the frame (e.g., the first frame or the second frame) may have multiple insulating gaps or couple with the floor at multiple points to form radiators or parasitic branches of other antennas, but the embodiments of the present application do not limit this.

[0153] like Figure 7 As shown, the electronic device 100 may include a first housing 201 , a second housing 202 , a first rotation shaft 203 and a floor 300 .

[0154] 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.

[0155] The first rotating shaft 203 is located between the first housing 201 and the second housing 202 and is rotatably connected to the first housing 201 and the second housing 202, respectively, 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 may be located within the first housing 201, and the second portion may be located within the second housing 202. The first portion and the second portion may be connected by the first rotating shaft 203.

[0156] It should be understandable that Figure 7 In the illustrated electronic device 100, which is a foldable electronic device, a first hinge 203 is directly connected to the first housing 201 and the second housing 202, respectively, enabling relative rotation of the first and second housings 201 and 202. Furthermore, the phrase "the first hinge 203 is rotatably connected to the first and second housings 201 and 202" includes the case where the first hinge 203 is rotatably connected to the first or second housing via one or more second hinges and one or more intermediate housings. For example, in one embodiment, the electronic device 100 may further include a first hinge and a second hinge, and one or more intermediate housings located between the first and second hinges. The first hinge is located between the first housing 201 and the intermediate housing, and is rotatably connected to the first and intermediate housings, respectively, enabling relative rotation of the first and intermediate housings. The second hinge is located between the intermediate and second housings 202, and the first hinge 203 is rotatably connected to the intermediate and intermediate housings, respectively, enabling relative rotation of the intermediate and intermediate housings 202.

[0157] The first frame 210 includes a first position 211 and a second position 212. The first frame 210 is coupled to the floor 300 or has an insulating gap at the first position 211. The first frame 210 is coupled to the floor 300 or has an insulating gap at the second position 212.

[0158] The second frame 220 includes a third position 213, a fourth position 214, and a fifth position 215. The second frame 220 is coupled to the floor 300 at the third position 213. The second frame 220 has a first insulating gap at the fourth position 214. The second frame 220 has a second insulating gap at the fifth position 215.

[0159] In one embodiment, the width of the first insulating gap is greater than or equal to 0.2 mm and less than or equal to 2 mm. It should be understood that the width of the gaps on the frame in the embodiments of the present application can be within the above ranges, and for the sake of brevity, they will not be detailed here. The "width of the insulating gap" should be understood as the dimension in the direction extending between two sections of conductive material (e.g., two radiators).

[0160] The electronic device 100 includes an antenna 200. The antenna 200 includes a first radiator 310, a second radiator 320, and a third radiator 330.

[0161] The first radiator 310 includes a conductive part of the first bezel 210 between the first position 211 and the second position 212. At least part of the first radiator 310 is spaced apart from the floor 300.

[0162] The second radiator 320 includes a conductive part of the second bezel 220 between the third position 213 and the fourth position 214. At least part of the second radiator 320 is spaced apart from the floor 300.

[0163] The third radiator 330 includes a conductive part of the second bezel 220 between the fourth position 214 and the fifth position 215. At least part of the third radiator 330 is spaced apart from the floor 300. The length L1 of the second radiator 320 and the length L2 of the third radiator 330 satisfy: L1 < L2.

[0164] The antenna 200 further includes a coupling connector 340 and a feeding circuit 350.

[0165] The first end of the coupling connector 340 extends to the third radiator 330 and is spaced apart from the third radiator 330. The second end of the coupling connector 340 is connected to the first end of the second radiator 320. The first end of the second radiator 320 and the first end of the third radiator 330 are opposite and do not contact each other through a first insulating gap.

[0166] The first radiator 310 includes a feeding point 351. The feeding circuit 350 is coupled to the feeding point 351. The feeding circuit 350 is configured to transmit a radio frequency signal of a first frequency band.

[0167] When the electronic device 100 is in a folded state, the first radiator 310 at least partially overlaps the second radiator 320 and / or the third radiator 330 along a first direction. The first direction is a thickness direction of the electronic device 100, or, when the electronic device 100 is in an unfolded state, the first direction is a direction perpendicular to the display screen, for example, the x direction.

[0168] According to the embodiments of the present application, the second radiator 320 and the third radiator 330 can jointly form a parasitic branch, which is configured to improve the radiation characteristics (e.g., system efficiency and radiation efficiency) of the antenna 200 in the first frequency band.

[0169] The second radiator 320 is a structure with one end grounded and the other end open, and the third radiator 330 is a structure with both ends open. The second radiator 320 and the third radiator 330 can jointly form a parasitic branch with one end grounded and the other end open. Moreover, the first insulating gap between the second radiator 320 and the third radiator 330 can be regarded as an equivalent capacitor (for example, a distributed capacitor) provided on the parasitic branch, which can enable the parasitic branch to form a meta material structure. The parasitic branch with the meta material structure can increase the radiation aperture. Moreover, the electric field is more dispersed after the first insulating gap is provided. In an embodiment, the dielectric loss near the parasitic branch forming the meta material structure is reduced, and thus the radiation characteristics (for example, system efficiency and radiation efficiency) of the antenna 200 can be effectively improved.

[0170] In an embodiment, the electrical length of the parasitic branch (the sum of the electrical length of the second radiator 320 and the electrical length of the third radiator 330) is greater than three-eighths of the first wavelength.

[0171] It should be understood that the parasitic branch can be used to generate a parasitic resonance (which can be jointly generated by the second radiator 320 and the third radiator 330). The parasitic resonance generated by the parasitic branch can correspond to a quarter-wave mode, and through the first insulating gap, the electrical length of the parasitic branch can be greater than three-eighths of the first wavelength, and the current on the parasitic branch (the second radiator 320 and the third radiator 330) is in the same direction (for example, does not reverse). The electrical length of the parasitic branch is increased from one-quarter of the first wavelength to more than three-eighths of the first wavelength, but still works in the quarter-wave mode.

[0172] In the formula, the first wavelength can be understood as the dielectric wavelength corresponding to the resonance point frequency of the parasitic resonance generated by the parasitic branch, or can also be understood as the dielectric wavelength corresponding to the center frequency of the resonance frequency band formed by the parasitic resonance. Since there is a certain correspondence between the vacuum wavelength and the dielectric wavelength, the above ratio can be converted to the vacuum wavelength, and other wavelengths in the embodiments of the present application can also be understood accordingly, and will not be described one by one.

[0173] In this case, the current density on the parasitic branch is dispersed, and the electric field density between the parasitic branch and the ground plate 300 is weakened, thereby reducing the conductor loss and dielectric loss caused by the parasitic branch, the conductor and the dielectric provided around the parasitic branch, and further improving the radiation characteristics of the antenna 200. The parasitic branch increases the radiation aperture, and effectively improves the system efficiency and radiation efficiency of the antenna 200.

[0174] Meanwhile, since the first end of the coupling connector 340 extends to the third radiator 330 and is disposed apart from the third radiator 330, a distributed capacitance can be formed between the coupling connector 340 and the third radiator 330.

[0175] It is to be understood that, by the distributed capacitance formed between the coupling connector 340 and the third radiator 330, the equivalent capacitance value of the first insulating gap can be adjusted, thereby adjusting the radiation characteristics (e.g., the resonance point frequency of the parasitic resonance generated by the parasitic branch) of the antenna 200.

[0176] Since the distributed capacitance is formed between the coupling connector 340 and the third radiator 330, the electric field at the first insulating gap is dispersed to between the coupling connector 340 and the third radiator 330 and does not concentrate at the first insulating gap, which can further reduce dielectric loss and improve the radiation characteristics (e.g., radiation efficiency) of the antenna 200.

[0177] Also, since the second end of the second radiator 320 is a ground end, the second radiator 320 has stronger current than the third radiator 330, and the length of the second radiator 320 is smaller than the length of the third radiator 330, the third radiator 330 can be coupled to more energy (it is difficult to excite the third radiator 330 when the coupling connector 340 is not provided) through the coupling connector 340, so as to better excite the third radiator 330, thereby improving the radiation characteristics (e.g., radiation efficiency) of the antenna 200.

[0178] In one embodiment, the first radiator 310 is configured to generate a first resonance, and a resonance frequency band of the first resonance includes the first frequency band described above. In one embodiment, the second radiator 320 and the third radiator 330 can collectively generate a parasitic resonance, and a resonance point frequency of the parasitic resonance is higher than a resonance point frequency of the first resonance. In one embodiment, the parasitic resonance is configured to improve the radiation efficiency of the antenna 200 in the first frequency band.

[0179] In one embodiment, a frequency difference between the resonance point frequency of the parasitic resonance and the resonance point frequency of the first resonance is less than or equal to 600 MHz. In one embodiment, the frequency difference between the resonance point frequency of the parasitic resonance and the resonance point frequency of the first resonance is greater than or equal to 200 MHz.

[0180] It is to be understood that, when the frequency difference between the resonance point frequency of the parasitic resonance and the resonance point frequency of the first resonance is within the range described above, the antenna 200 can have good radiation characteristics (e.g., radiation efficiency) in the first frequency band.

[0181] In one embodiment, the first frequency band includes a communication frequency band in a low band (LB) (698-960 MHz) range of a cellular network.

[0182] In an embodiment, the first frequency band can also include a communication frequency band in a mid-frequency frequency band (1710 MHz-2170 MHz) range, a communication frequency band in a high-frequency frequency band (2300 MHz-2690 MHz) range, and a communication frequency band in a sub 6G range.

[0183] It should be understood that, in the embodiments of the present application, the communication frequency band in the range can be understood as any one communication frequency band in the frequency range, and for the sake of brevity of the description, will not be repeated. For example, when the first frequency band is a communication frequency band in the (698 MHz-960 MHz) range, the operating frequency band of the antenna 200 can include multiple communication frequency bands belonging to the frequency range, for example, B5, B8, etc., which can all be understood accordingly in the embodiments of the present application, and will not be repeated. In an embodiment, the antenna 200 can further include a tuning circuit. The tuning circuit is coupled with the first radiator 310, and is used to adjust the resonance point frequency of the first resonance generated by the first radiator 310, so that the resonance frequency band of the first resonance is different communication frequency bands in the first frequency band.

[0184] In an embodiment, the first bezel 210 includes a first side 131 and a second side 132 that are angularly intersected. The length of the first side 131 is less than the length of the second side 132. The first position 211 and the second position 212 are located on the second side 132.

[0185] The second bezel 220 includes a third side 133 and a fourth side 134 that are angularly intersected. The length of the third side 133 is less than the length of the fourth side 134. The third position 213, the fourth position 214, and the fifth position 215 are located on the fourth side 134.

[0186] In an embodiment, when the electronic device 100 is in the unfolded state, the first side 131 and the third side 133 are the same side of the electronic device 100. For the sake of brevity of the description, only the first side 131 and the third side 133 are taken as an example to illustrate the top side (or the bottom side) of the electronic device 100. Among them, the top / bottom side of the electronic device 100 can be understood as the side of the top / bottom in the unfolded state, for example, which can be understood as the side of the top / bottom in the desktop, graphical user interface (GUI) of the mobile phone.

[0187] It should be understood that, when the first frequency band includes a communication frequency band in a low-frequency frequency band range, the antenna 200 operates in the low-frequency frequency band, the size of the first radiator 310 and the parasitic branch (the sum of the length of the second radiator 320 and the length of the third radiator 330) is large, and it is more convenient to be arranged on the long side of the electronic device 100.

[0188] In one embodiment, the length L1 of the second radiator 320 and the length L2 of the third radiator 330 satisfy: L1≤(2 / 3)×L2.

[0189] In one embodiment, the length L1 of the second radiator 320 and the length L2 of the third radiator 330 satisfy: L1≤(3 / 5)×L2.

[0190] In one embodiment, the length L1 of the second radiator 320 and the length L2 of the third radiator 330 satisfy: L1≤(1 / 3)×L2.

[0191] It should be understood that the first insulating gap can be located in a region with a large current of the parasitic branch (the second radiator 320 and the third radiator 330). The region with a large current should be understood as, for the parasitic branch (the first end of the second radiator 320 and the first end of the third radiator 330 are connected) without the first insulating gap (for example, operating in a quarter-wave mode), when the first insulating gap is opened, the electric field intensity generated by the parasitic branch (the second radiator 320 and the third radiator 330) becomes weaker, achieving the effect of dispersing the electric field, thereby improving the radiation characteristics (for example, system efficiency and radiation efficiency) of the antenna 200.

[0192] In one embodiment, an equivalent capacitor is formed between the coupling connector 340 and the third radiator 330. In one embodiment, the equivalent capacitor formed between the coupling connector 340 and the third radiator 330 has a capacitance value greater than or equal to 1 pF. In one embodiment, the equivalent capacitor formed between the coupling connector 340 and the third radiator 330 has a capacitance value less than or equal to 3 pF.

[0193] It should be understood that by adjusting the capacitance value of the equivalent capacitor formed between the coupling connector 340 and the third radiator 330, the amount of coupling between the second radiator 320 and the third radiator 330 can be determined, thereby changing the current on the second radiator 320 when the third radiator 330 resonates, so that the antenna 200 has different radiation characteristics (for example, the resonance point frequency of parasitic resonance, radiation efficiency, etc.).

[0194] At the same time, the formula for calculating the capacitance value of the equivalent capacitor is as follows:

[0195]

[0196] wherein ε is the dielectric constant of the medium between the two plates of the capacitor (the coupling connector 340 and the third radiator 330); δ is the absolute dielectric constant in vacuum; k is the electrostatic force constant; S is the opposite area of the two plates (the opposite area of the coupling connector 340 and the third radiator 330); d is the vertical distance between the two plates (the distance between the coupling connector 340 and the third radiator 330).

[0197] By adjusting the above electrical parameters (dielectric constant of medium between the coupling connection 340 and the third radiator 330, area or distance of facing), the capacitance value of the equivalent capacitance formed between the coupling connection 340 and the third radiator 330 can be adjusted, so that the antenna 200 has different radiation characteristics (e.g., resonance point frequency of parasitic resonance, radiation efficiency, etc.).

[0198] In one embodiment, the size of the coupling connection 340 along the first direction (e.g., the x direction) is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0199] In one embodiment, the size of the coupling connection 340 along the first direction (e.g., the x direction) can be used to adjust the capacitance value of the equivalent capacitance formed between the coupling connection 340 and the third radiator 330, determine the amount of coupling between the second radiator 320 and the third radiator 330, so that the antenna 200 has different radiation characteristics (e.g., resonance point frequency of parasitic resonance, radiation efficiency, etc.).

[0200] In one embodiment, the distance L0 between the third radiator 330 and the coupling connection 340 in the second direction is less than or equal to 1 mm. The second direction (e.g., the y direction) is perpendicular to the extension direction (e.g., the z direction) of the third radiator 330.

[0201] It should be understood that the distance between the third radiator 330 and the coupling connection 340 can be understood as the minimum value of the distance between a point on the third radiator 330 and a point on the coupling connection 340. The distance L0 between the third radiator 330 and the coupling connection 340 can be used to adjust the capacitance value of the equivalent capacitance formed between the coupling connection 340 and the third radiator 330, determine the amount of coupling between the second radiator 320 and the third radiator 330, so that the antenna 200 has different radiation characteristics (e.g., resonance point frequency of parasitic resonance, radiation efficiency, etc.).

[0202] In one embodiment, the size of the coupling connection 340 in the third direction is less than or equal to 150 mm, so as to be flexibly arranged in the electronic device 100. The third direction is the extension direction (e.g., the z direction) of the third radiator 330. In one embodiment, the size of the coupling connection 340 in the third direction is less than or equal to 120 mm.

[0203] In one embodiment, the electrical length of the coupling connection 340 in the third direction is less than or equal to one quarter of the first wavelength. In one embodiment, the electrical length of the coupling connection 340 in the third direction is less than or equal to one eighth of the first wavelength.

[0204] In an embodiment, the coupling connector 340 has a dimension in the third direction greater than or equal to 40 mm, so that the second radiator 320 and the third radiator 330 have a better coupling amount, and the third radiator 330 is better excited. In an embodiment, the coupling connector 340 has a dimension in the third direction greater than or equal to 80 mm.

[0205] In an embodiment, the coupling connector 340 has an electrical length in the third direction greater than or equal to one sixteenth of the first wavelength.

[0206] In an embodiment, the coupling connector 340 has different widths at different positions. In an embodiment, the width (dimension in the third direction) of the second end of the coupling connector 340 at the position connected to the second radiator 320 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0207] It should be understood that increasing the width of the second end of the coupling connector 340 at the position connected to the second radiator 320 can improve the structural strength between the coupling connector 340 and the second radiator 320.

[0208] In an embodiment, the coupling connector 340 does not overlap the floor 300 in the first direction (for example, the x direction). In an embodiment, the coupling connector 340 can be arranged in the gap formed between the floor 300 and the second frame 220.

[0209] In an embodiment, the electronic device 100 further includes a component 360, as shown in Figure 9 The component 360 is opposite to the second frame 220 and does not contact the second frame 220. The distance between the component 360 and the second frame 220 (the second radiator 320 and / or the third radiator 330) is less than or equal to 1 mm. The coupling connector 340 is located between the component 360 and the second frame 220 (the second radiator 320 and / or the third radiator 330).

[0210] It should be understood that when the layout in the electronic device 100 includes the component 360 close to the second radiator 320 and the third radiator 330, the gap between the component 360 and the second frame 220 is small, and therefore, it is difficult to arrange a sub-board for placing elements coupled between the second radiator 320 and the third radiator 330. However, the coupling connector 340 provided in the embodiments of the present application occupies a small space and is convenient to arrange between the component 360 and the second frame 220, and does not need to additionally arrange a sub-board.

[0211] In an embodiment, the second housing 202 includes the above-mentioned second frame 220 and a second middle plate 362, as shown in Figure 9In one embodiment, the second middle plate 362 is electrically connected to the floor 300 at multiple locations. In one embodiment, the second middle plate 362 can be considered as at least a portion of the floor 300. In one embodiment, the second frame 220 is electrically connected to the second middle plate 362 by a web structure (e.g., a ground connection). The web structure (e.g., a ground connection) is connected between and integrally formed with the second frame 220 and the second middle plate 362. For simplicity of discussion, the structures of the housing described in the embodiments of the present application can be understood accordingly.

[0212] In one embodiment, the component 360 is a battery compartment. The battery compartment 360 is located on the second middle plate 362. The electronic device 100 can further include a battery 361. The battery 361 is located on the second middle plate 362 within the space enclosed by the battery compartment 360.

[0213] In one embodiment, the component 360 can also be a camera module, etc. For simplicity of discussion, the camera module, etc. will not be described again.

[0214] In one embodiment, the coupling connection 340 and the second frame 220 are integrally formed. In one embodiment, the coupling connection 340, the second frame 220, and the second middle plate 362 are integrally formed.

[0215] It should be understood that the coupling connection 340, the second frame 220, and the second middle plate 362 can be milled from the same piece of metal, thereby reducing assembly errors and improving the radiation characteristics (e.g., bandwidth) of the antenna 200.

[0216] In one embodiment, the first frame 210 is coupled to the floor 300 at a first location 211 and has a third insulating gap at a second location 212, as shown. Figure 9

[0217] It should be understood that one end of the first radiator 310 is a grounded end and the other end is an open end, forming a structure similar to an inverted F-type antenna or similar to a left-handed antenna, which can be, for example, an antenna conforming to a composite right and left hand (CRLH) transmission line structure. In one embodiment, the first radiator 310 generates a first resonance corresponding to a quarter wavelength mode. The electrical length of the first radiator 310 can be one quarter of a second wavelength, which is the wavelength to which the first resonance corresponds.

[0218] In one embodiment, the first radiator 310 includes a first connection point 371 and a second connection point 372. The first radiator 310 has a fourth insulating gap between the first connection point 371 and the second connection point 372.

[0219] ​In an embodiment, the antenna 200 can further include a first element 370. The first element 370 is coupled between a first connection point 371 and a second connection point 372.

[0220] It should be understood that the first radiator 310 is a structure with one end grounded and the other end open. Also, the fourth insulating gap opened in the first radiator 310 can be regarded as an equivalent capacitor (e.g., a distributed capacitor) provided on the first radiator 310. Similarly, the first radiator 310 can also form a metamaterial structure, which will not be described in detail for the sake of brevity and can be understood in correspondence with the metamaterial structure in the above-described embodiments.

[0221] In an embodiment, the first bezel 210 has the fourth insulating gap and the third insulating gap at the first position 211 and the second position 212, respectively.

[0222] In an embodiment, the first radiator 310 has both ends open, forming a structure similar to a dipole antenna. The first radiator 310 generates a first resonance corresponding to a half-wavelength mode. The electrical length of the first radiator 310 is one half of the second wavelength.

[0223] It should be understood that the embodiments of the present application do not limit the boundary conditions of the first radiator 310 (e.g., the first bezel 210 is coupled to the floor 300 or has an insulating gap at the first position 211), and the first radiator 310 can form any kind of antenna structure. For the sake of brevity, only the first radiator 310 forming a metamaterial structure is described as an example.

[0224] In an embodiment, the insulating gap on the first bezel 210 and the insulating gap on the second bezel 220 are aligned to improve the aesthetic appearance of the electronic device 100.

[0225] It should be understood that, in the embodiments of the present application, alignment can be understood as that, when the electronic device 100 is in a folded state, the two insulating gaps at least partially overlap in the thickness direction of the electronic device 100.

[0226] In an embodiment, the third end of the coupling connector 340 is coupled to the floor 300, as shown in Figure 10 In an embodiment, the third end of the coupling connector 340 extends toward the second radiator 320 (e.g., extends toward the second end of the second radiator 320).

[0227] It should be understood that, since the second end of the coupling connector 340 is connected to the first end of the second radiator 320 and the third end of the coupling connector 340 is coupled to the floor 300, a distributed inductance can be formed between the second end and the third end of the coupling connector 340.

[0228] The first end of the second radiator 320 is coupled to the ground plane 300 through the coupling connection 340 (distributed inductance), which can cause the current on the second radiator 320 to be shunted in the area near the first end of the second radiator 320 when the second radiator 320 generates a parasitic resonance. As the current on the second radiator 320 is shunted in the area near the first end of the second radiator 320, the current density on the parasitic stub (the second radiator 320 and the third radiator 330) can be dispersed. In an embodiment, the current distribution on the parasitic stub (the second radiator 320 and the third radiator 330) is relatively more dispersed, thereby reducing the conductor loss of the parasitic stub (the second radiator 320 and the third radiator 330). In an embodiment, the current distribution on the parasitic stub (the second radiator 320 and the third radiator 330) is relatively more dispersed, which can increase the radiation aperture of the parasitic stub (the second radiator 320 and the third radiator 330). As the conductor loss of the parasitic stub (the second radiator 320 and the third radiator 330) is reduced and the radiation aperture is increased, the radiation characteristics (e.g., system efficiency and radiation efficiency) of the antenna 200 can be improved.

[0229] Figures 11 to 13 is Figure 10 the simulation results of the antenna 200 in the electronic device 100 shown in Figure 11 is Figure 10 the simulation results of the S parameters of the antenna 200 in the electronic device 100 shown in Figure 12 is Figure 10 the simulation results of the system efficiency and the radiation efficiency of the antenna 200 in the electronic device 100 shown in Figure 13 is Figure 10 the simulation results of the system efficiency and the radiation efficiency of the antenna 200 in the electronic device 100 shown in

[0230] As Figure 11 shown, the simulation results of the S parameters between the third radiator 330 and the coupling connection 340 in the second direction when the distance L0=0.4 mm and L0=0.8 mm are shown.

[0231] When L0=0.4 mm and L0=0.8 mm, the antenna can generate a resonance near 0.9 GHz, which can correspond to the first resonance generated by the first radiator in the above embodiment.

[0232] When L0=0.4 mm and L0=0.8 mm, the equivalent capacitance formed between the coupling connection and the third radiator has different capacitance values, thereby causing the antenna to generate a resonance near 1.15 GHz and 1.2 GHz, respectively, which can correspond to the parasitic resonance generated by the second radiator and the third radiator together in the above embodiment.

[0233] AsFigure 12 As shown, when the coupling connector is not arranged, the third radiator cannot be well excited, and at the resonance point of the first resonance, the radiation efficiency is about -6.5 dB, and the system efficiency is about -7.5 dB.

[0234] As shown, when the coupling connector is not arranged, the third radiator cannot be well excited, and at the resonance point of the first resonance, the radiation efficiency is about -6.5 dB, and the system efficiency is about -7.5 dB. Figure 13 As shown, when the coupling connector is arranged, the third radiator is well excited, and at the resonance point of the first resonance, the radiation efficiency is about -5 dB, and the system efficiency is about -6 dB.

[0235] Figure 14 FIG. 1 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.

[0236] As shown, the electronic device 100 can include a first frame 210. Figure 14 The first frame 210 includes a first position 211, a second position 212, and a third position 213 arranged in sequence. At least part of the first frame 210 is arranged spaced apart from a floor 300.

[0237] The first frame 210 is coupled to the floor 300 at the first position 211. The first frame 210 has a first insulating gap 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.

[0238] The electronic device 100 includes an antenna 200. The antenna 200 includes a first radiator 310 and a second radiator 320.

[0239] The first radiator 310 includes a conductive part of the first frame 210 between the first position 211 and the second position 212. At least part of the first radiator 310 is arranged spaced apart from the floor 300.

[0240] The second radiator 320 includes a conductive part of the first frame 210 between the third position 213 and a fourth position 214. At least part of the second radiator 320 is arranged spaced apart from the floor 300. The length D1 of the first radiator 310 and the length D2 of the second radiator 320 satisfy: D1 < D2.

[0241] The antenna 200 further includes a coupling connector 340 and a feeding circuit 350.

[0242] The first end of the coupling connector 340 extends toward the second radiator 320 and is arranged spaced apart from the second radiator 320. The second end of the coupling connector 340 is connected to the first end of the first radiator 310. The first end of the first radiator 310 and the first end of the second radiator 320 are opposite and do not contact each other through the first insulating gap.

[0243]

[0244] ​The first radiator 310 includes a feed point 351. A feed circuit 350 is coupled to the feed point 351. The feed circuit 350 is configured to transmit radio frequency signals of a first frequency band and radio frequency signals of a second frequency band. The first frequency band has a lower frequency than the second frequency band.

[0245] According to the technical scheme provided in the embodiments of the present application, the radio frequency signals of the first frequency band and the radio frequency signals of the second frequency band are fed in by a single feed point (the feed point 351), so that the antenna 200 can work in the first frequency band and the second frequency band and has good radiation characteristics (for example, radiation efficiency) in the first frequency band and the second frequency band, facilitating the layout in the increasingly cramped electronic device 100.

[0246] Meanwhile, since the feed point 351 is located on the first radiator 310, the first radiator 310 has stronger current than the second radiator 320, and the length of the first radiator 310 is smaller than the length of the second radiator 320. The coupling connector 340 can make the second radiator 320 coupled to more energy (it is difficult to excite the second radiator 320 when the coupling connector 340 is not arranged), so as to better excite the second radiator 320, thereby improving the radiation characteristics (for example, radiation efficiency) of the antenna 200.

[0247] Since a distributed capacitance is formed between the coupling connector 340 and the second radiator 320, the electric field at the first insulating gap is dispersed between the coupling connector 340 and the second radiator 320, and will not be concentrated at the first insulating gap, which can further reduce dielectric loss and improve the radiation characteristics (for example, radiation efficiency) of the antenna 200.

[0248] In one embodiment, the first radiator 310 is configured to generate a first resonance and a second resonance. The resonance frequency band of the first resonance includes the first frequency band. The resonance frequency band of the second resonance includes the second frequency band.

[0249] It should be understood that the first resonance can be understood as being generated by the whole first radiator 310, which can correspond to a quarter wavelength mode of the whole first radiator 310. The second resonance can be understood as being generated by the first radiator 310 between the feed point 351 and the second position 212, which can correspond to a quarter wavelength mode of the first radiator 310 between the feed point 351 and the second position 212.

[0250] In one embodiment, the first frame 210 is coupled to the floor 300 at the third position 213.

[0251] It should be understood that the first frame 210 can have an insulating gap at the third position 213 or be coupled to the floor 300. For the sake of brevity of the discussion, only the case that the first frame 210 is coupled to the floor 300 at the third position 213 is described, and the other cases will not be described herein.

[0252] In one embodiment, the second radiator 320 can serve as a parasitic branch (not including a feeding point) to improve the radiation characteristics of the antenna 200. In one embodiment, the second radiator 320 can be used to generate a first parasitic resonance and a second parasitic resonance.

[0253] wherein a resonance point frequency of the first parasitic resonance is lower than a resonance point frequency of the second parasitic resonance. The resonance point frequency of the first parasitic resonance is higher than a resonance point frequency of the first resonance, and the resonance point frequency of the second parasitic resonance is within a resonance frequency band of the second resonance. The first parasitic resonance is used to improve the radiation efficiency of the antenna 200 in the first frequency band, and the second parasitic resonance is used to improve the radiation efficiency of the antenna 200 in the second frequency band.

[0254] It should be understood that the resonance point frequency of the second parasitic resonance being within the resonance frequency band of the second resonance can be understood as the resonance point frequency of the second parasitic resonance being close to the resonance point frequency of the second resonance or the center frequency of the second frequency band, for example, the frequency difference between the resonance point frequency of the second parasitic resonance and the resonance point frequency of the second resonance or the center frequency of the second frequency band is less than or equal to 50 MHz.

[0255] Meanwhile, since the resonance point frequency of the second parasitic resonance is within the resonance frequency band of the second resonance, the second parasitic resonance and the second resonance can be easily merged into one resonance in the S parameter diagram, and only one dip appears in the S parameter diagram.

[0256] The first resonance is generated by the whole of the first radiator 310, and the corresponding radiation body size of the first resonance is large, and the radiation characteristics (e.g., radiation efficiency) of the antenna 200 in the resonance frequency band of the first resonance are good. Therefore, the radiation characteristics of the antenna 200 are mainly the radiation characteristics of the first radiator 310, and the resonance point frequency of the first parasitic resonance can be higher than the resonance point frequency of the first resonance, and in this way, the radiation characteristics (e.g., radiation efficiency) of the antenna 200 are further improved.

[0257] The second resonance is generated by the first radiator 310 between the feeding point 351 and the second position 212, and the corresponding radiation body size of the second resonance is small, and the radiation characteristics (e.g., radiation efficiency) of the antenna 200 in the resonance frequency band of the second resonance are poor. Therefore, the radiation characteristics of the antenna 200 are mainly the radiation characteristics of the second radiator 320 (parasitic branch), and the resonance point frequency of the second parasitic resonance can be within the resonance frequency band of the second resonance, and in this way, the radiation characteristics (e.g., radiation efficiency) of the antenna 200 are further improved.

[0258] It should be understood that the first parasitic resonance can correspond to a base mode (e.g., a quarter wavelength mode) of the second radiator 320, and the second parasitic resonance can correspond to a high-order mode (e.g., a three-quarter mode) of the second radiator 320.

[0259] In an embodiment, a frequency difference between the resonant point frequency of the first parasitic resonance and the resonant point frequency of the first resonance is less than or equal to 600 MHz. In an embodiment, a frequency difference between the resonant point frequency of the first parasitic resonance and the resonant point frequency of the first resonance is greater than or equal to 200 MHz. When the frequency difference between the resonant point frequency of the first parasitic resonance and the resonant point frequency of the first resonance is within the above range, the antenna 200 can have good radiation characteristics (e.g., radiation efficiency) in the first frequency band.

[0260] In an embodiment, the first frequency band includes an L5 band (1176.45 MHz ± 1.023 MHz) in a global positioning system (GPS). In an embodiment, the second frequency band includes a 2.4G band (2.4 GHz-2.4835 GHz) in a wireless network communication technology (Wi-Fi) and / or a Bluetooth (BT) (2.4 GHz-2.4835 GHz).

[0261] In an embodiment, the first frame 210 includes a first side 131 and a second side 132 that are angularly intersected. A length of the first side 131 is less than a length of the second side 132. The first position 211, the second position 212, and the third position 213 are located on the second side 132.

[0262] In an embodiment, a length D1 of the first radiator 310 and a length D2 of the second radiator 320 satisfy: D1 ≤ (2 / 3) × D2.

[0263] In an embodiment, a length D1 of the first radiator 310 and a length D2 of the second radiator 320 satisfy: D1 ≤ (3 / 5) × D2.

[0264] In an embodiment, a length D1 of the first radiator 310 and a length D2 of the second radiator 320 satisfy: D1 ≤ (1 / 3) × D2.

[0265] In an embodiment, an equivalent capacitance is formed between the coupling connector 340 and the second radiator 320. In an embodiment, a capacitance value of the equivalent capacitance formed between the coupling connector 340 and the second radiator 320 is greater than or equal to 1 pF. In an embodiment, the capacitance value of the equivalent capacitance formed between the coupling connector 340 and the second radiator 320 is less than or equal to 3 pF.

[0266] It should be understood that by adjusting the capacitance value of the equivalent capacitor formed between the coupling connector 340 and the second radiator 320, the coupling amount between the first radiator 310 and the second radiator 320 can be determined, so that the antenna 200 has different radiation characteristics (for example, the resonance point frequency of the parasitic resonance, the radiation efficiency, etc.). The adjustment mode of the equivalent capacitor formed between the coupling connector 340 and the second radiator 320 can refer to the corresponding description in the above embodiments, and will not be repeated here.

[0267] In one embodiment, the size of the coupling connector 340 in the first direction is greater than or equal to 0.5 mm and less than or equal to 2 mm. Wherein, the first direction is the thickness direction of the electronic device 100, or when the electronic device 100 is in an unfolded state, the first direction is the direction perpendicular to the display screen, for example, the x direction.

[0268] In one embodiment, the size of the coupling connector 340 in the first direction (for example, the x direction) can be used to adjust the capacitance value of the equivalent capacitor formed between the coupling connector 340 and the third radiator 330, determine the coupling amount between the second radiator 320 and the third radiator 330, and make the antenna 200 have different radiation characteristics (for example, the resonance point frequency of the parasitic resonance, the radiation efficiency, etc.).

[0269] In one embodiment, the distance D0 between the first radiator 310 and the coupling connector 340 in the second direction is less than or equal to 1 mm. The second direction (for example, the y direction) is perpendicular to the extension direction (for example, the z direction) of the second radiator 320.

[0270] In one embodiment, the size of the coupling connector 340 in the third direction is less than or equal to 10 mm, so as to be flexibly arranged in the electronic device 100. The third direction is the extension direction (for example, the z direction) of the second radiator 320. In one embodiment, the size of the coupling connector 340 in the third direction is less than or equal to 8 mm.

[0271] In one embodiment, the electrical length of the coupling connector 340 in the third direction is less than or equal to one quarter of the first wavelength. Wherein, the first wavelength is the wavelength corresponding to the first resonance.

[0272] In one embodiment, the size of the coupling connector 340 in the third direction is greater than or equal to 2 mm, so that the first radiator 310 and the second radiator 320 have a better coupling amount, and the second radiator 330 is better excited. In one embodiment, the size of the coupling connector 340 in the third direction is greater than or equal to 3 mm.

[0273] In one embodiment, the electrical length of the coupling connector 340 in the third direction is greater than or equal to one tenth of the first wavelength.

[0274] It is to be understood that, since the size of the radiator corresponding to the first resonance (the whole of the first radiator 310) is large, the radiator can generate resonance with good radiation characteristics, and the radiation characteristics of the antenna 200 are dominated by the radiation characteristics of the first radiator 310. Therefore, when the size of the coupling connector 340 in the third direction increases, the current coupled from the first radiator 310 to the second radiator 320 is enhanced in the first frequency band, the current on the first radiator 310 is weakened, and the radiation characteristics (e.g., radiation efficiency, etc.) of the antenna 200 in the first frequency band are weakened.

[0275] Since the size of the radiator corresponding to the second resonance (the first radiator 310 between the feed point 351 and the second position 212) is small, the radiation characteristics (e.g., radiation efficiency) of the resonance generated by the radiator are poor in the resonance frequency band of the second resonance, and the radiation characteristics of the antenna 200 are dominated by the radiation characteristics of the second radiator 320 (the parasitic branch). Therefore, when the size of the coupling connector 340 in the third direction increases, the current coupled from the first radiator 310 to the second radiator 320 is enhanced in the second frequency band, the current on the second radiator 320 is enhanced, and the radiation characteristics (e.g., radiation efficiency, etc.) of the antenna 200 in the second frequency band are enhanced.

[0276] Therefore, when the size of the coupling connector 340 in the third direction is within the above range (e.g., the size of the coupling connector 340 in the third direction is greater than or equal to 2 mm and less than or equal to 10 mm, or greater than or equal to 3 mm and less than or equal to 8 mm), the antenna 200 has good radiation characteristics in both the first frequency band and the second frequency band.

[0277] In one embodiment, the width (size in the third direction) of the coupling connector 340 at each position is different. In one embodiment, the width (size in the third direction) of the coupling connector 340 at the position where the second end of the coupling connector 340 is connected to the first radiator 310 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0278] It is to be understood that increasing the width of the coupling connector 340 at the position where the second end of the coupling connector 340 is connected to the first radiator 310 can improve the structural strength between the coupling connector 340 and the first radiator 310.

[0279] In one embodiment, the coupling connector 340 does not overlap the ground plate 300 in the first direction (e.g., the x direction). In one embodiment, the coupling connector 340 can be disposed in the gap formed between the ground plate 300 and the first bezel 210.

[0280] In one embodiment, the electronic device 100 further includes a component 360, such as Figure 15The component 360 is opposite to the first bezel 210 and does not contact the first bezel 210. The distance between the component 360 and the first bezel 210 (the first radiator 310 and / or the second radiator 320) is less than or equal to 1 mm. The coupling connector 340 is located between the component 360 and the first bezel 210 (the first radiator 310 and / or the second radiator 320).

[0281] It should be understood that when the layout in the electronic device 100 includes the component 360 close to the first radiator 310 and the second radiator 320, the gap between the component 360 and the first bezel 210 is small, and therefore, it is difficult to arrange a sub-board for placing an element coupled between the first radiator 310 and the second radiator 320. However, the coupling connector 340 provided in the embodiments of the present application occupies a small space and is convenient to arrange between the component 360 and the first bezel 210, and does not need to additionally arrange a sub-board.

[0282] In an embodiment, the shell of the electronic device 100 includes the first bezel and the middle plate 363. In an embodiment, the middle plate 363 is electrically connected to the ground plate 300 through multiple electrical connections. In an embodiment, the middle plate 363 can be regarded as at least part of the ground plate 300. In an embodiment, the first bezel 210 is electrically connected to the middle plate 363 through a web structure (for example, a grounding connector). The web structure (for example, the grounding connector) is connected between the first bezel 210 and the middle plate 363 and is integrally formed with the first bezel 210 and the middle plate 363. For the sake of brevity of the description, the structures of the shell described in the embodiments of the present application can be understood accordingly.

[0283] In an embodiment, the component 360 is a battery compartment. The battery compartment 360 is located on the middle plate 363. The electronic device 100 can further include a battery 361. The battery 361 is located on the middle plate 363 and is located in the space enclosed by the battery compartment 360.

[0284] In an embodiment, the component 360 can also be a camera module or the like, and for the sake of brevity of the description, will not be described one by one.

[0285] In an embodiment, the coupling connector 340 and the first bezel 210 are integrally formed. In an embodiment, the coupling connector 340, the first bezel 210, and the middle plate 363 are integrally formed.

[0286] It should be understood that the coupling connector 340, the first bezel 210, and the middle plate 363 can be milled from the same metal piece, thereby reducing the error during assembly, thereby improving the radiation characteristics (for example, the bandwidth) of the antenna 200.

[0287] In an embodiment, the third end of the coupling connector 340 is coupled to the ground plate 300, as shown in FIG. 3B. Figure 16In one embodiment, the third end of the coupling connector 340 extends toward the first radiator 310 (eg, toward the second end of the first radiator 310 ).

[0288] It should be understood that since the second end of the coupling connector 340 is connected to the first end of the first radiator 310 and the third end of the coupling connector 340 is coupled to the floor 300 , a distributed inductance may be formed between the second and third ends of the coupling connector 340 .

[0289] Figure 17 and Figure 18 yes Figure 14 The simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 100 are shown. Figure 17 yes Figure 14 The simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 100 in the first frequency band are shown. Figure 18 yes Figure 14 The simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 100 in the second frequency band are shown.

[0290] It should be understood that for the sake of brevity, Figure 17 and Figure 18 In the simulation results shown, only the first frequency band including the L5 frequency band (1176.45 MHz ± 1.023 MHz) in GPS and the second frequency band including the 2.4 GHz frequency band (2.4 GHz - 2.4835 GHz) in Wi-Fi are used as examples for illustration.

[0291] like Figure 17 As shown in the figure, in the first frequency band, the antenna has a system efficiency of -6.93dB and a radiation efficiency of -6.79dB. The antenna has good radiation characteristics in the first frequency band.

[0292] like Figure 18 As shown in the figure, in the second frequency band, the antenna has a system efficiency of -6.34dB and a radiation efficiency of -5.82dB. The antenna has good radiation characteristics in the second frequency band.

[0293] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device, comprising: The electronic device comprises: a first housing, a second housing and a floor, the first housing comprises a first frame, and the second housing comprises a second frame; the first frame comprises a first position and a second position, the floor is coupled to or has an insulating gap with the first frame at the first position, and the floor is coupled to or has an insulating gap with the first frame at the second position; the second frame comprises a third position, a fourth position and a fifth position arranged in sequence, the floor is coupled to the second frame at the third position, the second frame has a first insulating gap at the fourth position, and the second frame has a second insulating gap at the fifth position; a first rotating shaft, the first rotating shaft is located between the first housing and the second housing, and the first rotating shaft is rotationally connected to the first housing and the second housing, respectively; and an antenna, the antenna comprises: a first radiator, the first radiator comprises a conductive part of the first frame between the first position and the second position, at least part of the first radiator is spaced apart from the floor, a second radiator, the second radiator comprises a conductive part of the second frame between the third position and the fourth position, at least part of the second radiator is spaced apart from the floor, a third radiator, the second radiator comprises a conductive part of the second frame between the fourth position and the fifth position, at least part of the third radiator is spaced apart from the floor, a length L1 of the second radiator and a length L2 of the third radiator satisfy: L1 < L2, a coupling connector, a first end of the coupling connector extends to and is spaced apart from the third radiator, a second end of the coupling connector is connected to a first end of the second radiator, the first end of the second radiator and the first end of the third radiator are opposite and do not contact each other through the first insulating gap, and a feeding circuit, the first radiator comprises a feeding point, the feeding circuit is coupled to the feeding point, and the feeding circuit is used for transmitting radio frequency signals of a first frequency band. Based on the electronic device being in a folded state, the first radiator at least partially overlaps the second radiator and / or the third radiator in a first direction, and the first direction is a thickness direction of the electronic device. The length L1 of the second radiator and the length L2 of the third radiator satisfy: L1 ≤ (2 / 3) × L2.

2. The electronic device of claim 1, wherein, 3. The electronic device of claim 1 or 2, wherein: the electronic device further comprises a component, the component is opposite and does not contact the second frame, and a distance between the component and the second frame is less than or equal to 1 mm; the coupling connector is located between the component and the second frame.

4. The electronic device of claim 3, wherein: the electronic device further comprises a battery, and the battery is located in a space enclosed by the component. A length of the coupling connector in a second direction is greater than or equal to 40 mm and less than or equal to 150 mm, and the second direction is an extension direction of the third radiator.

5. The electronic device of any of claims 1-4, wherein, ​ 6. The electronic device of any one of claims 1-5, wherein the second radiator and the third radiator are configured to generate a first parasitic resonance; and wherein the coupling connector has an electrical length in a second direction that is less than or equal to one quarter of a first wavelength corresponding to the first parasitic resonance, the second direction being a direction of extension of the third radiator.

7. The electronic device of any one of claims 1-6, wherein the coupling connector has a width at the second end that is greater than or equal to 1 mm and less than or equal to 3 mm; and wherein the coupling connector has a dimension in the first direction that is greater than or equal to 0.5 mm and less than or equal to 2 mm.

7. The electronic device of any one of claims 1-6, wherein the coupling connector has a width at the second end that is greater than or equal to 1 mm and less than or equal to 3 mm; and wherein the coupling connector has a dimension in the first direction that is greater than or equal to 0.5 mm and less than or equal to 2 mm.

7. The electronic device of any one of claims 1-6, wherein the coupling connector has a width at the second end that is greater than or equal to 1 mm and less than or equal to 3 mm; and wherein the coupling connector has a dimension in the first direction that is greater than or equal to 0.5 mm and less than or equal to 2 mm.

10. The electronic device of any one of claims 1-9, wherein the first radiator is configured to generate a first resonance having a resonance frequency band that includes the first frequency band; wherein the second radiator and the third radiator are configured to generate a first parasitic resonance having a resonance point frequency that is higher than a resonance point frequency of the first resonance, the first parasitic resonance being configured to improve a radiation efficiency of the antenna at the first frequency band.

8. The electronic device of any of claims 1-7, wherein, 10. The electronic device of any one of claims 1-9, wherein the coupling connector and the second bezel are integrally formed.

9. The electronic device of any of claims 1-8, wherein, 10. The electronic device of any one of claims 1-9, wherein the coupling connector does not overlap the ground plane in the first direction.

13. The electronic device of any one of claims 1-12, wherein the first bezel is coupled to the ground plane at the first location and has a third insulating gap at the second location; and wherein the antenna further comprises an element, the first radiator comprises a first connection point and a second connection point, the element is coupled between the first connection point and the second connection point, and the first radiator has a third insulating gap at the first connection point and the second connection point.

13. The electronic device of any one of claims 1-12, wherein the first bezel is coupled to the ground plane at the first location and has a third insulating gap at the second location; and wherein the antenna further comprises an element, the first radiator comprises a first connection point and a second connection point, the element is coupled between the first connection point and the second connection point, and the first radiator has a third insulating gap at the first connection point and the second connection point.

13. The electronic device of any one of claims 1-12, wherein the first bezel is coupled to the ground plane at the first location and has a third insulating gap at the second location; and wherein the antenna further comprises an element, the first radiator comprises a first connection point and a second connection point, the element is coupled between the first connection point and the second connection point, and the first radiator has a third insulating gap at the first connection point and the second connection point.

11. The electronic device of any of claims 1-10, wherein, 13. The electronic device of any one of claims 1-12, wherein the first bezel is coupled to the ground plane at the first location and has a third insulating gap at the second location; and wherein the antenna further comprises an element, the first radiator comprises a first connection point and a second connection point, the element is coupled between the first connection point and the second connection point, and the first radiator has a third insulating gap at the first connection point and the second connection point.

12. The electronic device of any of claims 1-11, wherein, 13. The electronic device of any one of claims 1-12, wherein the first bezel is coupled to the ground plane at the first location and has a third insulating gap at the second location; and wherein the antenna further comprises an element, the first radiator comprises a first connection point and a second connection point, the element is coupled between the first connection point and the second connection point, and the first radiator has a third insulating gap at the first connection point and the second connection point. ​ ​ ​ 14. An electronic device, comprising: ​ ​ ​ ​ ​ ​ The first radiator comprises a feeding point, and a feeding circuit coupled with the feeding point, the feeding circuit being configured to transmit radio frequency signals in a first frequency band and a second frequency band, the first frequency band having a lower frequency than the second frequency band.

15. The electronic device of claim 14, wherein, The length D1 of the first radiator and the length D2 of the second radiator satisfy D1≤(2 / 3)×D2. 16.The electronic device of claim 14 or 15, wherein the first frame is located on a first side of the electronic device, and the second frame is located on a second side of the electronic device, the second side being opposite to the first side. The electronic device further comprises a component opposite to the first frame and not in contact with the first frame, and a distance between the component and the first frame is less than or equal to 1 mm. 17.The electronic device of claim 16, wherein the component is located on a first side of the electronic device, and the second frame is located on a second side of the electronic device, the second side being opposite to the first side. The electronic device further comprises a battery located in the space surrounded by the component. 18.The electronic device of any one of claims 14 to 17, wherein the coupling connector has a length in a first direction greater than or equal to 2 mm and less than or equal to 10 mm, the first direction being a direction in which the second radiator extends. 19.The electronic device of any one of claims 14 to 18, wherein the second radiator is configured to generate a first parasitic resonance and a second parasitic resonance, the first parasitic resonance having a resonance point frequency lower than a resonance point frequency of the second parasitic resonance; and an electrical length of the coupling connector in a first direction is less than or equal to a quarter of a first wavelength corresponding to the first parasitic resonance, the first direction being a direction in which the second radiator extends. 20.The electronic device of any one of claims 14 to 19, wherein a width of a second end of the coupling connector and a location where the first radiator is connected is greater than or equal to 1 mm and less than or equal to 3 mm. A dimension of the coupling connector in a second direction is greater than or equal to 0.5 mm and less than or equal to 2 mm, the second direction being a thickness direction of the electronic device. A third end of the coupling connector is coupled with the ground plate. 23.The electronic device of any one of claims 14 to 22, wherein the first radiator is configured to generate a first resonance and a second resonance, a resonance frequency band of the first resonance comprising the first frequency band, a resonance frequency band of the second resonance comprising the second frequency band; the second radiator is configured to generate a first parasitic resonance and a second parasitic resonance, the first parasitic resonance having a resonance point frequency higher than a resonance point frequency of the first resonance, the second parasitic resonance having a resonance point frequency within the resonance frequency band of the second resonance, the first parasitic resonance being configured to improve a radiation efficiency of the antenna in the first frequency band, and the second parasitic resonance being configured to improve a radiation efficiency of the antenna in the second frequency band. The coupling connector and the first frame are integrally formed.

21. The electronic device of any of claims 14-20, wherein, The coupling connector and the ground plate do not overlap in a second direction, the second direction being a thickness direction of the electronic device.

22. The electronic device of any of claims 14-21, wherein, The first frame is coupled with the ground plate at the third location. ​ ​ ​ 24. The electronic device of any of claims 14-23, wherein, ​ 25. The electronic device of any of claims 15-24, wherein, ​ 26. The electronic device of any of claims 16-25, wherein, ​

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