Electronic equipment and antenna switching method

Abstract

The invention provides electronic equipment and an antenna switching method. The electronic equipment comprises a first antenna, a second antenna and a controller. When the electronic equipment is in different communication states, the controller can set part of the radiator as a parasitic branch knot according to different communication states, so that the communication performance of the electronic equipment is improved.

Description

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on June 30, 2023, with application number 202310802738.9, and priority to the Chinese patent application with the invention name “An electronic device and a method for antenna switching”, all contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the field of wireless communications, and in particular to an electronic device and an antenna switching method. Background Art

[0003] As people's demand for high-speed data transmission increases, the development trend of industrial design (ID) of electronic devices is large screen ratio and multiple cameras. This has led to a significant reduction in antenna clearance and increasingly limited layout space.

[0004] At present, the communication frequency bands of electronic devices include the third generation wireless systems (3G), fourth generation wireless systems (4G), and fifth generation wireless systems (5G). In the existing antenna layout, how to improve the communication quality of electronic devices is an urgent problem to be solved. Summary of the invention

[0005] The embodiment of the present application provides an electronic device and an antenna switching method, wherein the electronic device includes a first antenna, a second antenna and a controller. When the electronic device is in different communication states, the controller can set some radiators as parasitic branches according to different communication states to improve the communication performance of the electronic device.

[0006] In a first aspect, an electronic device is provided, comprising: a floor; a frame, at least a portion of the frame is spaced apart from the floor, the frame comprising a first position, a second position, a third position and a fourth position arranged in sequence, the second position and the third position being located at a first side of the frame; a first antenna, the working frequency band of the first antenna comprising a first frequency band, the first antenna comprising: a first radiator, the first radiator comprising a conductive portion of the frame between the first position and the second position; a second antenna, the working frequency band of the second antenna comprising a second frequency band and a third frequency band, the second antenna comprising: a second radiator, the second radiator comprising a conductive portion of the frame between the third position and the fourth position; a first tuning circuit, the second radiator comprising a first connection point, the first tuning circuit being coupled and connected between the first connection point and the floor; wherein the first frequency band and the second frequency band are the same or adjacent; based on the first antenna operating in the first frequency band, the second antenna switches the working frequency band from the second frequency band to the third frequency band by the first tuning circuit.

[0007] According to the embodiment of the present application, when the first antenna works in the first frequency band, the second antenna works in the second frequency band. Since the first frequency band and the second frequency band are the same or adjacent, and the second position and the third position are located on the first side of the frame, the second antenna has a strong interference with the first antenna, which makes the radiation characteristics (for example, radiation efficiency) of the first antenna worse. When the first antenna works in the first frequency band, the second antenna works in the third frequency band, and the second antenna does not interfere with the first antenna, thereby improving the radiation characteristics of the first antenna.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the frame is coupled to the floor at the first position, the third position, and the fourth position, the frame has a first gap at the second position; and the second radiator has a second gap between the third position and the fourth position.

[0009] According to an embodiment of the present application, the first end of the first radiator is a ground end (an end at the first position), and the second end is an open end (an end at the second position). The first end and the second end of the second radiator are both ground ends. The structures of the first antenna and the second antenna can be determined according to actual production or design, and the present application does not limit this.

[0010] In combination with the first aspect, in some implementations of the first aspect, the length of the border between the second position and the third position is less than or equal to a first wavelength, and the first wavelength is a wavelength corresponding to the first frequency band.

[0011] In combination with the first aspect, in certain implementations of the first aspect, a length of the border between the second position and the third position is less than or equal to 90 mm.

[0012] According to an embodiment of the present application, when the second position and the third position are within the above range, the first antenna and the second antenna have strong interference in the same frequency or adjacent frequency band. In combination with the first aspect, in some implementations of the first aspect, the second position and the third position coincide with each other; the frame is coupled to the floor at the first position, and the frame has a first gap and a second gap at the second position and the fourth position; the first end of the first radiator and the first end of the second radiator are opposite to each other through the first gap and do not contact each other, the first end of the first radiator is an open end, and the first end of the second radiator is a grounded end.

[0013] In combination with the first aspect, in some implementations of the first aspect, the electronic device also includes a first modem, a second modem and a second tuning circuit; wherein the first radiator includes a second connection point, and the second tuning circuit is connected between the second connection point and the floor; the first modem is electrically connected to the first tuning circuit, and the first modem is used to control the first tuning circuit to switch the working frequency band of the second antenna; the second modem is electrically connected to the second tuning circuit, and the second modem is used to control the second tuning circuit to switch the working frequency band of the first antenna; the first frequency band includes part of the communication frequency band in a non-cellular network, and the second frequency band includes part of the communication frequency band in a cellular network.

[0014] According to an embodiment of the present application, the first frequency band and the second frequency band may be communication frequency bands in different communication systems.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the electronic device also includes an application processor AP and a first modem; the AP is electrically connected to the first modem; the first modem is electrically connected to the first tuning circuit; the second antenna switches the working frequency band from the second frequency band to the third frequency band by the first tuning circuit, including: the AP sends switching information to the first modem; the first modem controls the first tuning circuit to switch the working frequency band of the second antenna from the second frequency band to the third frequency band according to the switching information.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the first frequency band is the 2.4G frequency band in WiFi, the second frequency band is B40 or B41 in the cellular network, or the first frequency band is the L1 frequency band in GPS, and the second frequency band is B3 in the cellular network; based on the electronic device enabling the first frequency band, the operating frequency band of the second antenna is switched from the second frequency band to the third frequency band.

[0017] According to an embodiment of the present application, B3 (1.71-1.785 GHz) and L1 (1578.42±1.023 MHz) are adjacent frequency bands, and B40 (2.3-2.4 GHz) or B41 (2.496-2.69 GHz) and WiFi / BT band (2.4-2.485 GHz) are adjacent frequency bands.

[0018] In a second aspect, an electronic device is provided, comprising: a floor; a frame, at least a portion of the frame is spaced apart from the floor, the frame comprises a first position, a second position and a third position which are arranged in sequence, and the frame is coupled to the floor at the second position; a first antenna, the working frequency band of the first antenna comprises a first frequency band, the first antenna comprises: a first radiator, the first radiator comprises a conductive portion of the frame between the first position and the second position; a second antenna, the working frequency band of the second antenna comprises a second frequency band and a third frequency band, the second antenna comprises: a second radiator, the second radiator comprises a conductive portion of the frame between the second position and the third position; a tuning circuit, the second radiator comprises a connection point, the tuning circuit is coupled and connected between the connection point and the floor; wherein the first frequency band and the second frequency band are the same or adjacent; based on the first antenna operating in the first frequency band, the second antenna switches the working frequency band from the third frequency band to the second frequency band by the tuning circuit.

[0019] According to an embodiment of the present application, when the first antenna operates in a first frequency band, the second antenna operates in a second frequency band. Since the first frequency band and the second frequency band are the same or adjacent to each other, when the first radiator generates a main resonance, the second radiator can be stimulated to generate a parasitic resonance, and the parasitic resonance can be used to improve the radiation characteristics of the first antenna (for example, radiation efficiency, operating bandwidth).

[0020] In combination with the second aspect, in some implementations of the second aspect, the frame is coupled to the floor at the first position, the frame has a first gap at the third position; and the first radiator has a second gap between the first position and the second position.

[0021] In combination with the second aspect, in certain implementations of the second aspect, the first frequency band and the second frequency band are communication frequency bands within the range of 698 MHz-960 MHz, or within the range of 1710 MHz-2170 MHz, or within the range of 2300 MHz-2690 MHz.

[0022] In combination with the second aspect, in certain implementations of the second aspect, the electronic device also includes a modem, which is electrically connected to the tuning circuit; the second antenna switches the operating frequency band from the third frequency band to the second frequency band by the tuning circuit, including: the modem controls the tuning circuit to switch the operating frequency band of the second antenna from the third frequency band to the second frequency band.

[0023] In a third aspect, an electronic device is provided, comprising: a first antenna, comprising a first tuning circuit; a second antenna, comprising a second tuning circuit; a first switch, wherein a connection port of the first switch is electrically connected to the first tuning circuit; a first modem, wherein a first port of the first modem is electrically connected to a control port of the first switch, and a second port of the first modem is electrically connected to a first switching port of the first switch; and a second modem, wherein a first port of the second modem is electrically connected to a second switching port of the first switch, and a second port of the second modem is electrically connected to the second tuning circuit.

[0024] In combination with the third aspect, in certain implementations of the third aspect, the control port of the first switch is used to switch the electrical connection state between the connection port of the first switch and the first switching port of the first switch, or to control the electrical connection state between the connection port of the first switch and the second switching port of the first switch.

[0025] In combination with the third aspect, in some implementations of the third aspect, the electronic device also includes a second switch; wherein the connection port of the second switch is electrically connected to the second tuning circuit, the first switching port of the second switch is electrically connected to the third port of the first modem, the second switching port of the second switch is electrically connected to the second port of the second modem, and the third port of the second modem is electrically connected to the control port of the second switch.

[0026] In combination with the third aspect, in some implementations of the third aspect, the operating frequency band of the first antenna includes part of the communication frequency band in the non-cellular network, and the operating frequency band of the second antenna includes part of the communication frequency band in the cellular network.

[0027] In combination with the third aspect, in certain implementations of the third aspect, the electronic device also includes an application processor AP and a controller; wherein the first port of the AP is electrically connected to the first port of the controller, the second port of the AP is electrically connected to the fourth port of the first modem; and the second port of the controller is electrically connected to the fourth port of the second modem.

[0028] In combination with the third aspect, in certain implementations of the third aspect, the operating frequency band of the first antenna is the 2.4G frequency band of WiFi or the L1 frequency band in GPS, and the operating frequency band of the second antenna is a communication frequency band within the range of 1710MHz-2170MHz, or a communication frequency band within the range of 2300MHz-2690MHz.

[0029] In a fourth aspect, an electronic device is provided, comprising: a first antenna, comprising a first tuning circuit; a second antenna, comprising a second tuning circuit; a first modem and a second modem, wherein a first port of the first modem is electrically connected to a first port of the second modem, a second port of the second modem is electrically connected to the first tuning circuit, and a third port of the second modem is electrically connected to the second tuning circuit.

[0030] In combination with the fourth aspect, in some implementations of the fourth aspect, the operating frequency band of the first antenna includes part of the communication frequency band in the non-cellular network, and the operating frequency band of the second antenna includes part of the communication frequency band in the cellular network.

[0031] In combination with the fourth aspect, in certain implementations of the fourth aspect, the electronic device also includes an application processor AP and a controller; wherein the first port of the AP is electrically connected to the first port of the controller, the second port of the AP is electrically connected to the fourth port of the first modem; and the second port of the controller is electrically connected to the fourth port of the second modem.

[0032] In combination with the fourth aspect, in certain implementations of the fourth aspect, the operating frequency band of the first antenna is the 2.4G frequency band of WiFi or the L1 frequency band in GPS, and the operating frequency band of the second antenna is a communication frequency band within the range of 1710MHz-2170MHz, or a communication frequency band within the range of 2300MHz-2690MHz. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0034] Figure 2 It is a schematic structural diagram of the foldable electronic device 100 in the outward folded state.

[0035] Figure 3 is a schematic structural diagram of the foldable electronic device 100 in a possible unfolded state.

[0036] Figure 4 is a schematic structural diagram of the foldable electronic device 100 in a possible folded state.

[0037] Figure 5 is a schematic structural diagram of the foldable electronic device 100 in a possible partially unfolded state.

[0038] Figure 6 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0039] Figure 7 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0040] Figure 8 yes Figure 6 The S-parameter simulation results of the first antenna and the second antenna in the electronic device are shown.

[0041] Fig. 9 yes Figure 6 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown.

[0042] Fig.10 yes Figure 6 System efficiency and radiation efficiency of the second antenna in the electronic device shown.

[0043] Fig.11 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0044] Fig.12 yes Fig.11 The S-parameter simulation results of the first antenna and the second antenna in the electronic device are shown.

[0045] Fig.13 yes Fig.11 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown.

[0046] Fig.14 yes Fig.11 System efficiency and radiation efficiency of the second antenna in the electronic device shown.

[0047] Fig.15 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0048] Fig.16 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0049] Fig.17 yes Fig.11 The S-parameter simulation results of the second antenna and the third antenna when the first radiator in the electronic device is used as a parasitic branch are shown.

[0050] Fig.18 yes Fig.11System efficiency and radiation efficiency of the second antenna in the electronic device shown.

[0051] Fig.19 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0052] Fig. 20 yes Fig.19 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown.

[0053] Fig.21 yes Fig.19 The system efficiency and radiation efficiency of the second antenna in the electronic device shown are when the first radiator acts as a parasitic branch.

[0054] Fig. 22 yes Fig.19 The S-parameter simulation results of the first antenna when the second radiator in the electronic device is used as a parasitic branch are shown.

[0055] Fig.23 yes Fig.19 The system efficiency and radiation efficiency of the first antenna in the electronic device shown are when the second radiator acts as a parasitic branch.

[0056] Fig.24 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0057] Fig.25 yes Fig.24 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown.

[0058] Fig.26 yes Fig.24 The system efficiency and radiation efficiency of the second antenna in the electronic device shown are when the first radiator acts as a parasitic branch.

[0059] Fig. 27 yes Fig.24 The S-parameter simulation results of the first antenna when the second radiator in the electronic device is used as a parasitic branch are shown.

[0060] Fig.28 yes Fig.24 The system efficiency and radiation efficiency of the first antenna in the electronic device shown are when the second radiator acts as a parasitic branch.

[0061] Fig.29 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0062] Fig.30 yes Fig.29 System efficiency and radiation efficiency of the second antenna in the electronic device shown.

[0063] Fig.31 yes Fig.29 The system efficiency and radiation efficiency of the third antenna in the electronic device are shown.

[0064] Fig.32 It is a schematic diagram of an antenna switching method 400 provided in an embodiment of the present application.

[0065] Fig.33 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0066] Fig.34 yes Fig.33 S-parameter simulation results of the first antenna and the second antenna are shown.

[0067] Fig.35 yes Fig.33 The simulation results of the radiation efficiency of the first antenna are shown.

[0068] Fig.36 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0069] Fig.37 yes Fig.36 The simulation results of the radiation efficiency of the first antenna are shown.

[0070] Fig.38 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0071] Fig.39 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0072] Fig.40 yes Fig.38 The simulation results of the radiation efficiency of the first antenna are shown.

[0073] Fig.41 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0074] Fig.42 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0075] Fig.43 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0076] Fig.44 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0077] The following explains the terms that may appear in the embodiments of the present application.

[0078] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0079] When used in this application, “within the range of…”, unless it is separately specified that an end value is not included, it is assumed that both end values ​​of the range are included. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0080] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the connection between different components in the circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by coupling between the gaps between two conductive parts to form an equivalent capacitor.

[0081] Component / device: includes at least one of lumped component / device and distributed component / device.

[0082] Lumped component / device: refers to the collective name for all components when the size of the component is much smaller than the wavelength relative to the circuit operating frequency. For the signal, regardless of any time, the component characteristics always remain fixed and are independent of frequency.

[0083] Distributed components / devices: Unlike lumped components, if the size of the component is similar to or larger than the wavelength relative to the circuit operating frequency, then when the signal passes through the component, the characteristics of each point of the component itself will vary due to changes in the signal. At this time, the component as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed component.

[0084] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0085] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts.

[0086] Radiator: It is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the "antenna" in a narrow sense is understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0087] The radiator may include a conductor with a specific shape and size, such as a linear or sheet shape, etc., and the present application does not limit the specific shape. In one embodiment, the linear radiator may be referred to as a linear antenna. In one embodiment, the linear radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a bracket conductor, and may also be referred to as a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted FAntenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes a circle, a rectangle, a ring, etc., and the present application does not limit the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0088] The radiator may also include a slot or a slit formed on the conductor, for example, a closed or semi-closed slot or slit formed on a grounded conductor surface. In one embodiment, a slotted or slitted radiator may be referred to as a slot antenna or a slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slit of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slit may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slit (e.g., an opening is added to a closed slot or slit) may be referred to as an open slot antenna. In some embodiments, the slot shape is a long strip. In some embodiments, the length of the slot is about half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the slot is about an integer multiple of the wavelength (e.g., one times the dielectric wavelength). In some embodiments, the slot can be fed by a transmission line connected across one or both sides thereof, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a conductive frame with both ends grounded, which can also be called a frame antenna; in this embodiment, it can be regarded as that the slot antenna or slot antenna includes a linear radiator, which is spaced apart from the floor and grounded at both ends of the radiator, thereby forming a closed or semi-closed slot or slot. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a bracket conductor with both ends grounded, which can also be called a bracket antenna.

[0089] The feed circuit / feed structure is a combination of all components of an antenna for the purpose of receiving and transmitting radio frequency waves. In some cases, the "feed circuit" is understood in a narrow sense as a radio frequency chip (RFIC, frequency integrated circuit), or a transmission path from a radio frequency chip to a feeding point on a radiator or transmission line. In one embodiment, the feed circuit may include a radio frequency front-end circuit for transmitting radio frequency signals (analog signals). In one embodiment, the feed circuit is electrically connected to a baseband circuit, and the baseband circuit is used to transmit a baseband signal (digital signal), which can be converted into a radio frequency signal by an electronic component (e.g., RF IC) in the feed circuit. In one embodiment, the baseband circuit may include a modem, which can be used to up-convert or down-convert a baseband signal. In one embodiment, part of the radio frequency front-end circuit and part of the baseband circuit may be arranged in one chip, or respectively arranged in a radio frequency front-end chip and a baseband chip.

[0090] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator cannot be narrowly understood as an end point or end portion that is physically disconnected from other radiators, but can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end / point" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feed end / feeding point may be a coupling area on the antenna radiator that is coupled to a feed structure or a feed circuit (for example, an area facing a portion of the feed circuit). For another example, the ground end / grounding point may be a connection / coupling area on the antenna radiator that is coupled to a ground structure or a ground circuit.

[0091] Open end, closed end: In some embodiments, the open end / grounded end is, for example, relative to whether it is grounded, the closed end is grounded, and the open end is not grounded. In some embodiments, the open end / closed end is, for example, relative to other conductors, the closed end is electrically connected to other conductors, and the open end is not electrically connected to other conductors. In one embodiment, the open end can also be referred to as a free end, an open end, or an open circuit end. In one embodiment, the closed end can also be referred to as a grounded end, or a short circuit end. It should be understood that in some embodiments, other conductors can be connected through open end coupling to transfer coupling energy (which can be understood as transferring current).

[0092] Resonance / resonance frequency: The resonance frequency is also called the resonance frequency. The resonance frequency may refer to the frequency at which the imaginary part of the antenna input impedance is zero. The resonance frequency may 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 may be less than -20dB. It should be understood that, unless otherwise specified, the first resonance mentioned in this application for the antenna / radiator "generating the first resonance" should be the fundamental mode resonance generated by the antenna / radiator, or the lowest frequency resonance generated by the antenna / radiator.

[0093] Resonance frequency band / communication frequency band / working frequency band: Regardless of the type of antenna, it always works within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has a working frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the working frequency band of the antenna includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna.

[0094] Electrical length: It can refer to the ratio of physical length (ie mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0095]

[0096] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0097] Wavelength: or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0098] It should be understood that the wavelength of the radiation signal in the air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×108 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Among them, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" may also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0099] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0100] Antenna radiation efficiency: refers to the ratio of the power radiated by the antenna into space (i.e. the power of the electromagnetic wave part that is effectively converted) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power and the ohmic loss power of the metal and / or the dielectric loss power. The radiation efficiency is a value that measures the radiation ability of the antenna. Metal loss and dielectric loss are both factors that affect the radiation efficiency.

[0101] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0102] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmit power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0103] Antenna return loss can be represented by the S11 parameter, which is one of the S parameters. S11 represents the reflection coefficient, which can characterize the antenna transmission efficiency. The S11 parameter is usually a negative number. The smaller the S11 parameter is, the smaller the antenna return loss is, and the less energy is reflected back by the antenna itself, which means that more energy actually enters the antenna, and the higher the antenna system efficiency is; the larger the S11 parameter is, the greater the antenna return loss is, and the lower the antenna system efficiency is.

[0104] It should be noted that in engineering, the S11 value is generally -6dB as the standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or that the antenna has good transmission efficiency.

[0105] It should be understood that the first frequency band and the second frequency band mentioned in the embodiments of the present application are the same (also referred to as co-frequency) and can be understood as any one of the following situations:

[0106] The first frequency band and the second frequency band include the same communication frequency band. In one embodiment, the first frequency band and the second frequency band can be applied to a MIMO antenna system. For example, the first frequency band and the second frequency band both include a sub-6G frequency band in 5G, and the first frequency band and the second frequency band can be considered to be the same frequency.

[0107] There is at least partial frequency overlap between the first frequency band and the second frequency band. For example, the first frequency band includes B35 (1.85-1.91 GHz) in LTE, and the second frequency band includes B39 (1.88-1.92 GHz) in LTE. The frequency of the first frequency band and the frequency of the second frequency band partially overlap, so it can be considered that the first frequency band and the second frequency band are the same frequency.

[0108] It should be understood that the first frequency band and the second frequency band mentioned in the embodiments of the present application are adjacent to each other, which can be understood as:

[0109] In the first frequency band and the second frequency band, the spacing between the starting frequency point of the higher frequency band and the ending frequency point of the lower frequency band is less than 10% of the center frequency of the higher frequency band (or, the spacing is less than or equal to 200MHz). For example, the first frequency band includes B3 (1.71-1.785GHz) in LTE, and the second frequency band includes L1 (1578.42±1.023MHz) in GPS. B3 (1.71-1.785GHz) and L1 (1578.42±1.023MHz) are adjacent frequency bands, so the first frequency band and the second frequency band can be considered to be adjacent. Or for example, the first frequency band includes B40 (2.3-2.4GHz) or B41 (2.496-2.69GHz) in LTE, and the second frequency band includes the WiFi / BT band (2.4-2.485GHz). B40 (2.3-2.4GHz) or B41 (2.496-2.69GHz) and the WiFi / BT band (2.4-2.485GHz) are adjacent frequency bands, then the first frequency band and the second frequency band can be considered to be adjacent.

[0110] Ground (GND): can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "GND" can be used for grounding components in electronic devices. In one embodiment, "ground" can be a grounding layer of a circuit board of an electronic device, or a grounding plate formed by a frame of an electronic device, or a grounding metal layer formed by a metal film under a screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0111] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. It will be appreciated by those skilled in the art that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0112] Grounding: refers to coupling with the above-mentioned ground / floor in any way. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding (or physical ground) at a specific position on the frame through some structural parts of the middle frame. In one embodiment, grounding can be achieved through device grounding, such as grounding through devices such as capacitors / inductors / resistors connected in series or in parallel (or device ground).

[0113] The technical solution of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0114] Figure 1 1 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application. The foldable electronic device 100 may be a mobile phone, a tablet computer, an e-reader, a laptop computer, a wearable device such as a watch, or other electronic device with a folding function. Figure 1 The illustrated embodiment is described by taking a foldable mobile phone as an example.

[0115] refer to Figure 1 The foldable electronic device 100 may include a flexible display screen 110, a first frame 121, a first cover 122, a second frame 123, a second cover 124, and a hinge 125. In some embodiments, the first frame 121, the first cover 122, the second frame 123, and the second cover 124 may form a first shell 126 and a second shell 127 that support the flexible display screen 110. In other embodiments, at least one of the first cover 122 and the second cover 124 may include a display screen.

[0116] Figure 1The dot matrix pattern filled in the figure can schematically represent the flexible display screen 110. The flexible display screen 110 can have the characteristics of strong flexibility and bendability, and can provide users with a new interaction method based on the bendable characteristics. The display panel of the flexible display screen 110 can, for example, adopt any one of a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a quantum dot light-emitting diode (QLED), etc., and the embodiments of the present application are not limited to this.

[0117] The flexible display screen 110 may include a first display portion 111 corresponding to the first housing 126, a second display portion 112 corresponding to the second housing 127, and a foldable display portion 113 corresponding to the hinge 125. The foldable display portion 113 may be connected between the first display portion 111 and the second display portion 112.

[0118] The first frame 121 may surround the outer periphery of the first cover 122, and at least a portion of the first frame 121 may also surround the outer periphery of the first display portion 111. The first display portion 111 may be arranged parallel to and spaced from the first cover 122, and the first display portion 111 and the first cover 122 may be located on both sides of the first frame 121. The space between the first display portion 111 and the first cover 122 may be used to place components of the foldable electronic device 100, such as an antenna, a circuit board assembly, and the like.

[0119] The second frame 123 may surround the outer periphery of the second cover 124, and at least a portion of the second frame 123 may also surround the outer periphery of the second display portion 112. The second display portion 112 may be arranged in parallel and spaced apart from the second cover 124, and the second display portion 112 and the second cover 124 may be located on both sides of the second frame 123. The space between the second display portion 112 and the second cover 124 may be used to place components of the foldable electronic device 100, such as an antenna, a circuit board assembly, etc.

[0120] In one embodiment provided in the present application, the cover body and the frame may be two parts of the shell of the foldable electronic device 100, and the cover body and the frame may be connected, and the form of the connection may not belong to assembly methods such as snap-on, gluing, welding, riveting, clearance fit, etc. The connection relationship between the cover body and the frame is usually difficult to separate. In another embodiment provided in the present application, the cover body and the frame may be two different components. By assembling the cover body and the frame together, the shell of the foldable electronic device 100 can be formed.

[0121] The frame can at least partially serve as an antenna radiator to receive / transmit radio frequency signals, and there can be a gap between this portion of the frame serving as the radiator and other portions of the cover, thereby ensuring that the antenna radiator has a good radiation environment. In one embodiment, the cover can be provided with a gap at this portion of the frame serving as the radiator to facilitate the radiation of the antenna.

[0122] The frame 11 can be formed of a conductive material such as metal. The frame 11 can be arranged between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 100. The frame 11 can have four sides surrounding the display module 15 to help fix the display module 15. In one implementation, the frame 11 made of a conductive material can be directly used as a conductive frame of the electronic device 100, for example, to form the appearance of a metal frame, suitable for metal industrial design (ID). In one implementation, the outer surface of the frame 11 can be a conductive material, such as a metal material, to form the appearance of a metal frame. In these implementations, the conductive portion of the frame 11 can be used as an antenna radiator of the electronic device 100.

[0123] In another implementation, the outer surface of the frame 11 can also be a non-conductive material, such as plastic, to form the appearance of a non-metallic frame, suitable for non-metallic ID. In one implementation, the inner surface of the frame 11 may include a conductive material, such as a metal material. In this implementation, the conductive portion of the frame 11 can be used as an antenna radiator of the electronic device 100. It should be understood that the radiator (or book, the conductive material on the inner surface) disposed on the inner surface of the frame 11 is arranged in contact with the non-conductive material of the frame 11 to facilitate antenna radiation, and the conductive material and the non-conductive material should be regarded as part of the frame 11.

[0124] The antenna of the electronic device 100 may also be disposed in the housing, such as a bracket antenna, a millimeter wave antenna, etc. ( Figure 1). The clearance of the antenna disposed in the housing can be obtained by a slit / opening on any one of the cover, and / or the frame, and / or the display screen, or by a non-conductive gap / aperture formed between any of them, and the clearance setting of the antenna can ensure the radiation performance of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive component in the electronic device 100, and the antenna radiates signals to the external space through the non-conductive area. In one embodiment, the antenna can be in the form of an antenna based on a flexible printed circuit (FPC), an antenna based on laser direct structuring (LDS), or a microstrip disk antenna (MDA). In one embodiment, the antenna can also be a transparent structure embedded in the display screen of the electronic device 100, so that the antenna is a transparent antenna unit embedded in the display screen of the electronic device 100.

[0125] The foldable electronic device 100 may also include a printed circuit board PCB (not shown in the figure). The PCB is arranged in the cavity formed by the cover body. Among them, the PCB can use a flame retardant material (FR-4) dielectric board, a Rogers dielectric board, a mixed dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a flame retardant material grade, and the Rogers dielectric board is a high-frequency board. Electronic components, such as radio frequency chips, etc., are carried on the PCB17. In one embodiment, a metal layer can be provided on the printed circuit board PCB. The metal layer can be used for grounding the electronic components carried on the printed circuit board PCB, and can also be used for grounding other components, such as a bracket antenna, a frame antenna, etc. The metal layer can be called a floor, a grounding plate, or a grounding layer. In one embodiment, the metal layer can be formed by etching metal on the surface of any layer of the dielectric board in the PCB. In one embodiment, the metal layer for grounding can be provided on the printed circuit board PCB on one side close to the flexible display screen 110. In one embodiment, the edge of the PCB can be regarded as the edge of its grounding layer. The electronic device 100 can also have other floors / grounding plates / grounding layers, as described above, which will not be repeated here.

[0126] The rotating shaft 125 can be connected between the first housing 126 and the second housing 127. Under the action of the rotating shaft 125, the first housing 126 and the second housing 127 can be moved closer to each other or farther away from each other. Accordingly, the first display portion 111 of the flexible display screen 110 and the second display portion 112 of the flexible display screen 110 can be moved closer to each other or farther away from each other, so that the flexible display screen 110 can be folded or unfolded.

[0127] In one example, the rotating shaft 125 may include, for example, a main shaft, a first connecting component, and a second connecting component. The first connecting component may be fixed to the first cover 122, and the second connecting component may be fixed to the second cover 124. The first connecting component and the second connecting component may rotate relative to the main shaft. The mutual movement of the first connecting component and the second connecting component may drive the mutual movement of the first shell 126 and the second shell 127, thereby realizing the opening and closing function of the foldable electronic device 100.

[0128] Figure 1 The foldable electronic device 100 is currently in the unfolded state. In the unfolded state, the angle between the first housing 126 and the second housing 127 can be approximately 180°. The flexible display screen 110 can be in the following state: Figure 1 Shown in expanded state.

[0129] Figure 2 A possible folding state of the foldable electronic device 100 is shown. Figure 2 The foldable electronic device 100 is shown in an outward folded state (the outward folded state may be simply referred to as an external folded state). Figure 2 The folded outward state shown can be, for example, a left-right folded outward state or an up-down folded outward state. Figure 1 and Figure 2 , describing a possible folding state of the foldable electronic device 100.

[0130] In the embodiment of the present application, the foldable electronic device 100 being in a folded state may mean that the foldable electronic device 100 is currently bent, and the bending degree of the foldable electronic device 100 reaches the maximum. At this time, the first cover 122 and the second cover 124 may be approximately parallel, spaced from each other, and arranged face to face, and the spacing distance between the first cover 122 and the second cover 124 is the smallest, and at least part of the first shell 126 and the second shell 127 are accommodated in the space surrounded by the flexible display screen 110; the first display portion 111, the first shell 126, the second shell 127, and the second display portion 112 are stacked in sequence. Similarly, the first display portion 111 and the second display portion 112 may be approximately parallel, spaced from each other, and the spacing distance between the first cover 122 and the second cover 124 is less than the spacing distance between the first display portion 111 and the second display portion 112. At this time, the first display portion 111 and the second display portion 112 may be regarded as being located on different planes.

[0131] Combination Figure 1 and Figure 2When the foldable electronic device 100 is in the outward folded state, the first cover 122 and the second cover 124 can be close to each other, and the first display portion 111 and the second display portion 112 can be close to each other. The first display portion 111, the second display portion 112 and the foldable display portion 113 can form a housing area for accommodating the first cover 122, the second cover 124, and the rotating shaft 125. In other words, the first cover 122, the second cover 124, and the rotating shaft 125 can be accommodated in the interval space between the first display portion 111 and the second display portion 112.

[0132] It should be understood that the foldable electronic device 100 can be folded inward (the inward folding state can be referred to as the inward folding state). When the foldable electronic device 100 is in the inward folding state, the first cover 122 and the second cover 124 can be close to each other, and the first display portion 111 and the second display portion 112 can be close to each other. The first cover 122, the second cover 124 and the rotating shaft 125 can form a housing area for accommodating the first display portion 111, the second display portion 112, and the foldable display portion 113. In other words, the first display portion 111, the second display portion 112, and the foldable display portion 113 can be accommodated in the interval space between the first cover 122 and the second cover 124.

[0133] The foldable electronic device 100 can switch between a folded state and an unfolded state. When the foldable electronic device 100 is in the folded state, the occupied space of the foldable electronic device 100 is relatively small; when the foldable electronic device 100 is in the unfolded state, the foldable electronic device 100 can display a relatively large screen to increase the viewing range of the user.

[0134] The foldable electronic device 100 may further include a third housing 128 and a rotating shaft 129. Figure 3 As shown. The hinge 129 can be connected between the third housing 128 and the second housing 127. The third housing 128 and the second housing 127 can be close to each other or away from each other. As the number of foldable parts of the foldable electronic device 100 increases, the occupied space of the foldable electronic device 100 can be further reduced in the folded state while maintaining the same screen size in the unfolded state.

[0135] And in Figure 3 In the foldable electronic device 100 shown, since it has three foldable parts (a first shell 126, a second shell 127 and a third shell 128), the foldable electronic device 100 has three forms: 1. unfolded state; 2. folded state; 3. partially unfolded state.

[0136] 1. If Figure 3, which is a possible unfolded state of the foldable electronic device 100. In the unfolded state, the angle between the first housing 126, the second housing 127 and the third housing 128 may be approximately 180°. The flexible display screen 110 may be in the unfolded state.

[0137] 2. If Figure 4 , which is a possible folding state (three-folding state) of the foldable electronic device 100. In the folded state, the first housing 126 and the second housing 127 rotate along the rotation axis 125, and the second housing 127 and the third housing 128 rotate along the rotation axis 129, so that the bending degree of the foldable electronic device 100 reaches the maximum. At this time, the first housing 126, the second housing 127 and the third housing 128 can be regarded as being located on different planes.

[0138] 3. If Figure 5 , which is a possible partially unfolded state (two-folded state) of the foldable electronic device 100. In the partially unfolded state, the angle between the first shell 126 and the second shell 127 can be about 180°, and the second shell 127 and the third shell 128 rotate along the rotation axis 129, so that the third shell 128 is close to the second shell 127. At this time, the first shell 126 and the second shell 127 are regarded as being located on the same plane, and the second shell 127 and the third shell 128 can be regarded as being located on different planes. In another possible partially unfolded state, the angle between the third shell 128 and the second shell 127 can be about 180°, and the first shell 126 and the second shell 127 rotate along the rotation axis 125, so that the first shell 126 is close to the second shell 127.

[0139] Figure 1 Only some components of the electronic device 100 are schematically shown, and the actual shapes, sizes and structures of these components are not limited to the following. Figure 1 limited.

[0140] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be considered as the front side, the surface where the back cover is located can be considered as the back side, and the surface where the frame is located can be considered as the side side.

[0141] It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side.

[0142] The embodiment of the present application provides an electronic device and an antenna switching method, wherein the electronic device includes a first antenna, a second antenna and a controller. When the electronic device is in different communication states, the controller can set some radiators as parasitic branches according to different communication states to improve the communication performance of the electronic device.

[0143] Figure 6 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0144] like Figure 6 As shown, the electronic device 100 includes a first antenna 201 and a second antenna 202. The working frequency band of the first antenna 201 is different from the working frequency band of the second antenna.

[0145] The first antenna 201 includes a first radiator 210 and a first feeding circuit 231 . The second antenna 202 includes a second radiator 220 and a second feeding circuit 232 .

[0146] The first radiator 210 includes a first feeding point 211. The first feeding circuit 231 is coupled to the first feeding point 211. The first feeding circuit 231 includes a first switch 241, and the first switch 241 can be used to switch the coupling connection state between the first feeding circuit 231 and the first feeding point 211. Figure 6 In the structure shown, the first port of the first switch 241 is coupled to the first feeding point 211, and no other electronic components are arranged between the first switch 241 and the first feeding point 211 (the second port of the first switch 241 is coupled to other electronic components in the first feeding circuit 231), and the first feeding circuit 231 and the first feeding point 211 can be turned on or off by the first switch 241.

[0147] It should be understood that in the embodiment of the present application, only the example of no other electronic components being arranged between the first switch 241 and the first feeding point 211 is used for illustration. In actual production or design, the first switch 241 may also be arranged at any position in the first feeding circuit 231. The embodiment of the present application does not limit this. The switches arranged in other feeding circuits in the embodiment of the present application may also be understood accordingly.

[0148] For the sake of simplicity, the coupling connection in the embodiments of the present application is explained by taking electrical connection as an example. In actual production or application, it can be achieved through electrical connection or indirect coupling, and will not be described in detail.

[0149] The second radiator 220 includes a second feeding point 221 , and the second feeding circuit 232 is coupled to the second feeding point 221 .

[0150] The electronic device 100 may further include a controller 230 . A first port of the controller 230 is electrically connected to a control port of the first switch 241 to control a switching state of the first switch 241 .

[0151] It should be understood that according to the technical solution provided in the embodiment of the present application, when the electronic device 100 is in different communication states, the controller 230 can control the first switch 241 to be in different switch states to improve the communication performance of the electronic device 100.

[0152] The electronic device 100 being in different communication states can be understood as the electronic device 100 transmitting and receiving electric signals through different antennas to achieve communication. Alternatively, it can also be understood as the electronic device 100 communicating in different communication frequency bands.

[0153] In one embodiment, the controller 230 receives a first signal, and the controller 230 determines the switch state of the first switch 241 according to the first signal, and the first signal is used to determine the working state of the second antenna. For example, when the first signal indicates that the second antenna 202 is working (the electronic device 100 communicates through the second antenna 202), the first radiator 210, as a parasitic branch of the second antenna 202, can be used to improve the radiation performance of the second antenna 202, so as to improve the communication quality of the electronic device 100.

[0154] It should be understood that the controller 230 determines the switch state of the first switch 241 according to the first signal, which can be understood as the controller 230 determines the on or off state of the first switch 241 according to the first signal, and then instructs other electronic components to switch the switch state of the first switch 241 to the on or off state. For example, after the controller 230 determines the switch state of the first switch 241, it can instruct the switch (for example, the RF IC in the feed circuit) to switch the first switch 241 to on or off. Alternatively, in one embodiment, the controller 230 determines the switch state of the first switch 241 according to the first signal, which can be understood as the controller 230 switches the first switch 241 to on or off according to the first signal, and does not switch the first switch 241 through other electronic components. In the embodiment of the present application, the switch states determined by the controller 230 can be understood accordingly.

[0155] In one embodiment, when the first radiator 210 serves as a parasitic branch of the second antenna 202 , the controller 230 switches the first switch 241 from the first switch state to the second switch state, and the first feeding circuit 231 is not electrically connected (disconnected) to the first feeding point 211 .

[0156] In one embodiment, the first switch 241 is a single pole single throw (SPST). It should be understood that in the embodiment of the present application, the switch can be selected according to actual production or design, and can also be a single pole double throw (SPDT) or a single pole multiple throw (SPXT). The embodiment of the present application does not limit this, and only needs to ensure that the number of the second port of the switch is greater than the number of electronic components or radio frequency channels that need to be connected.

[0157] In one embodiment, the first antenna 201 may further include a second switch 242. The first port of the second switch 242 is coupled to the floor, and the second port of the second switch 242 is coupled to the first feeding point 211. The second port of the controller 230 is electrically connected to the control port of the second switch 242 to control the switching state of the second switch 242. In one embodiment, at least one electronic component 251 is electrically connected between the second port of the second switch 242 and the first feeding point 211. In one embodiment, at least one electronic component 251 is electrically connected between the first port of the second switch 242 and the floor. In one embodiment, the second switch 242 is used to switch the coupling connection state of at least one electronic component 251 with the first feeding point 211 or with the floor.

[0158] For the sake of simplicity, in the embodiment of the present application, only an example is given in which at least one electronic component 251 is electrically connected between the second port of the second switch 242 and the first feeding point 211 for description.

[0159] In one embodiment, the controller 230 determines the switch state of the second switch 242 according to the first signal.

[0160] It should be understood that the second switch 242 can be used to match the radiation characteristics (e.g., the frequency of the resonance point) of the resonance generated by the first radiator 210. For example, when the first radiator 210 is used to generate the first resonance, the controller 230 instructs the first port of the second switch 242 to be electrically connected to the first second port, so that the electronic component 251 electrically connected between the first second port and the floor is coupled to the first feeding point 211. When the first radiator 210 acts as a parasitic branch of the second antenna 202 and generates the first parasitic resonance, the controller 230 instructs the first port of the second switch 242 to be electrically connected to the second second port, so that the electronic component 251 electrically connected between the second second port and the floor is coupled to the first feeding point 211.

[0161] Furthermore, the switch states of all switches described in the embodiments of the present application are determined by the controller 230. The controller 230 can switch the switch state by sending an electrical signal to the control port of the switch.

[0162] In one embodiment, the first port of the first switch 241 and the second port of the second switch 242 may be coupled to the first feeding point 211 through the same feeding connector (eg, a metal spring).

[0163] In one embodiment, for the sake of simplicity, in the above embodiments, the first switch 241 and the second switch 242 are coupled and connected to the first radiator 210 at the first feeding point 211 as an example for description. In one embodiment, the first radiator 210 includes a first connection point, the second port of the second switch 242 is coupled and connected to the first connection point, and the first connection point and the first feeding point 211 are different.

[0164] It should be understood that when the first switch 241 is a multi-pole multi-throw (x pole x throw, XPXT), the first switch 241 may include at least two first ports, and the functions of the first switch 241 and the second switch 242 may be simultaneously realized. One of the at least two first ports may be used to switch the coupling connection state with the first feeding circuit 231, and one of the at least two first ports may be used to switch the electronic components electrically connected to the floor, so as to match the different resonances generated by the first radiator 210.

[0165] In one embodiment, the controller 230 may be a microcontroller unit (MCU).

[0166] In one embodiment, the second feeding circuit 232 may include a third switch 243, and the third switch 243 may be used to switch the coupling connection state between the second feeding circuit 232 and the second feeding point 221. Figure 6 In the structure shown, the first port of the third switch 243 is coupled to the second feeding point 221, and the second port of the third switch 243 is coupled to other electronic components in the second feeding circuit 232. The third port of the controller 230 is electrically connected to the control port of the third switch 243 to control the switching state of the third switch 243.

[0167] It should be understood that the controller 230 receives the second signal, and the controller 230 determines the switch state of the third switch 243 according to the second signal, and the second signal is used to determine the working state of the first antenna. For example, when the first signal indicates that the first antenna 201 is working (the electronic device 100 communicates through the first antenna 201), the second radiator 220, as a parasitic branch of the first antenna 201, can be used to improve the radiation performance of the first antenna 201, so as to improve the communication quality of the electronic device 100.

[0168] In one embodiment, the controller 230 receives the first signal and the second signal, and determines the switch state of the switch according to the first signal and the second signal (the working states of the first antenna 201 and the second antenna) to improve the communication quality of the electronic device 100.

[0169] In one embodiment, the second antenna 202 may further include a fourth switch 244. A first port of the fourth switch 244 is coupled to the floor. A second port of the fourth switch 244 is coupled to the second feeding point 221. A fourth port of the controller 230 is electrically connected to a control port of the fourth switch 244 to control a switching state of the fourth switch 244. In one embodiment, at least one electronic component 252 is electrically connected between the second port of the fourth switch 244 and the second feeding point 221. In one embodiment, at least one electronic component 252 is electrically connected between the first port of the fourth switch 244 and the floor. In one embodiment, the fourth switch 244 is used to switch a coupling connection state between the at least one electronic component 252 and the second feeding point 221 or the floor.

[0170] It should be understood that the fourth switch 244 can be used to match the radiation characteristics (e.g., the frequency of the resonance point) of the resonance generated by the second radiator 220. For example, when the second radiator 220 is used to generate the second resonance, the controller 230 instructs the first port of the fourth switch 244 to be electrically connected to the first second port, so that the electronic component 252 electrically connected between the first second port and the floor is coupled to the second feeding point 221. When the second radiator 220 acts as a parasitic branch of the first antenna 201 and generates the second parasitic resonance, the controller 230 instructs the first port of the fourth switch 244 to be electrically connected to the second second port, so that the electronic component 252 electrically connected between the second second port and the floor is coupled to the second feeding point 221.

[0171] In one embodiment, the operating frequency band of the first antenna 201 may include at least part of the frequency bands in the cellular network, for example, B1 (1920MHz-1980MHz), B3 (1710MHz-1785MHz) and B7 (2500MHz-2570MHz) in LTE. In one embodiment, the operating frequency band of the first antenna 201 may also include a satellite communication frequency band. In one embodiment, the operating frequency band of the first antenna 201 may also include at least part of the frequency bands in the non-cellular network, for example, a WiFi frequency band, a BT frequency band, a GPS frequency band, or a satellite communication frequency band.

[0172] In one embodiment, the operating frequency band of the second antenna 202 may include at least part of the frequency band in the cellular network. In one embodiment, the operating frequency band of the second antenna 202 may also include a satellite communication frequency band. In one embodiment, the operating frequency band of the second antenna 202 may also include at least part of the frequency band in short-range communication, such as a WiFi frequency band, a BT frequency band, a GPS frequency band, or a satellite communication frequency band.

[0173] In one embodiment, the first antenna further includes a first modem 261, such as Figure 7 The first modem 261 is electrically connected to the first feeding circuit 231 . The first modem 261 can be used to process the electrical signal sent or received by the first antenna 201 .

[0174] In one embodiment, the second antenna further includes a second modem 262. The second modem 262 is electrically connected to the second feeding circuit 232. The second modem 262 can be used to process the electrical signal sent or received by the second antenna 202.

[0175] It should be understood that the modem used to process the electrical signal sent or received by the antenna can be understood as modulating the electrical signal transmitted by the feeding circuit, for example, up-converting, or modulating the electrical signal received by the antenna, for example, down-converting.

[0176] In one embodiment, the electronic device includes a first chip, and the first chip includes a controller 230 and a first modem 261. The controller 230 and the first modem 261 are integrated in the same chip.

[0177] It should be understood that the controller 230 and the first modem 261 are independently provided, and the controller 230 and the first modem 261 are connected through an interface, and the switching of the switch state by the controller 230 may cause the timing disorder of the transmitted electrical signal, which requires a complex processing process. When the controller 230 and the first modem 261 are integrated in the same chip (the first chip includes the controller 230 and the first modem 261), the controller 230 and the first modem 261 are hardware bound through a circuit, and the switching of the switch state by the controller 230 will not cause the timing disorder of the transmitted electrical signal.

[0178] In one embodiment, the electronic device 100 may further include an application processor (AP). The first port of the AP 260 is electrically connected to the controller 230 , and the second port of the AP 260 is electrically connected to the second modem 262 .

[0179] It should be understood that the AP 260 can be used to transmit a first signal to the controller 230, and the first signal can be used to determine the working state of the second antenna. For example, the working state of the second antenna can be understood as whether the electronic device communicates through the second antenna.

[0180] In one embodiment, the electronic device 100 may further include a system on chip (SoC). The SoC may include an AP 260, a controller 230, and a first modem 261, wherein the AP 260, the controller 230, and the first modem 261 are integrated into the SoC.

[0181] In one embodiment, the AP 260 may also receive a third signal sent by the second modem 262. The third signal may be used to determine the working state of the second antenna. In one embodiment, the third signal may include the working frequency band and service information of the second antenna.

[0182] In one embodiment, the first modem 261 sends a second signal to the controller 230, and the second signal can be used to determine the working state of the first antenna. In one embodiment, the third signal can include the working frequency band and service information of the first antenna.

[0183] Figures 8 to 10 yes Figure 6 The simulation results of the antenna in the electronic device shown in Figure 1 are as follows. Figure 8 yes Figure 6 The S-parameter simulation results of the first antenna and the second antenna in the electronic device are shown. Fig. 9 yes Figure 6 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown. Fig.10 yes Figure 6 System efficiency and radiation efficiency of the second antenna in the electronic device shown.

[0184] It should be understood that for the sake of brevity, Figure 6 In the electronic device shown, only an example is used to illustrate that the working frequency band of the first antenna includes the WiFi frequency band and the working frequency band of the second antenna includes the GPS.

[0185] like Figure 8 As shown, when the electronic device communicates through the first antenna (S11) and the second antenna (S22) at the same time (the first antenna and the second antenna are both working), the first antenna resonates near 2.4 GHz (first resonance), and its resonant frequency band may include the WiFi frequency band, and the second antenna resonates near 1.6 GHz (second resonance), and its resonant frequency band may include the GPS frequency band. And the isolation (S12) between the first antenna and the second antenna is less than -12 dB.

[0186] When the electronic device communicates only through the second antenna (the first antenna is not working and the second antenna is working), the controller makes the first port of the first switch not electrically connected to the first feeding circuit, and the first port of the second switch electrically connected to the electronic component corresponding to the first radiator as a parasitic branch of the second antenna, so that the first radiator serves as a parasitic branch of the second antenna.

[0187] like Fig. 9 As shown, the second antenna can generate resonance near 1.6 GHz and near 2 GHz. Among them, the resonance generated near 1.6 GHz is the second resonance generated by the second radiator. The resonance generated near 2 GHz is the first parasitic resonance generated by the first radiator, which can be used to improve the radiation characteristics of the second antenna, such as radiation efficiency and system efficiency.

[0188] like Fig.10 As shown, in the GPS frequency band, compared with the case where the first radiator does not act as a parasitic branch, the system efficiency of the second antenna is improved by about 0.5dB, and the radiation efficiency is improved by about 0.5dB.

[0189] Fig.11 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0190] like Fig.11 As shown, the electronic device includes a first frame 2710 .

[0191] The first frame 2710 includes a first position 281, a second position 282, a third position 283, and a fourth position 284 which are sequentially arranged along the extension direction thereof. In one embodiment, the second position 282 is located between the first position 281 and the third position 283, and the third position 283 is located between the second position 282 and the fourth position 284. The first frame 2710 is coupled to the floor at the first position 281 and the third position 283, and the first frame 2710 has a first gap at the second position 282 and a second gap at the fourth position 284.

[0192] The first radiator 210 is a conductive portion between the first position 281 and the second position 282 . The second radiator 220 is a conductive portion between the third position 283 and the fourth position 284 .

[0193] In one embodiment, the first frame 2710 further includes a first connection point 222. The first connection point 222 is located between the second position 282 and the third position 283. The electronic device 100 further includes a fifth switch 245. The first port of the fifth switch 245 is coupled to the floor, and the second port of the fifth switch 245 is coupled to the first connection point 222. The fifth port of the controller 230 is electrically connected to the control port of the fifth switch 245 to control the switching state of the fifth switch 245. In one embodiment, at least one electronic component 253 is electrically connected between the second port of the fifth switch 245 and the first connection point 222. In one embodiment, at least one electronic component 253 is electrically connected between the first port of the fifth switch 245 and the floor.

[0194] It should be understood that the fifth switch 245 can be used to switch the radiation aperture of the second antenna. When both the first antenna and the second antenna are working, the first port of the fifth switch 245 is directly electrically connected to the first connection point 222, or is electrically connected to the first connection point 222 through a 0 ohm resistor, and the second antenna radiates from the second frame 2720 between the third position 283 and the fourth position 284. When the first antenna is not working and the second antenna is working, the first port of the fifth switch 245 is electrically connected to the corresponding second port, the first connection point 222 is electrically connected to the floor through the corresponding electronic component 253, and the second antenna radiates from the second frame 2720 between the second position 282 and the fourth position 284. At the same time, the first switch 241 disconnects the first feeding circuit 231 from the first feeding point 211 (not electrically connected), and the first port of the second switch 242 is electrically connected to the first radiator 210 as the electronic component 251 corresponding to the parasitic branch of the second antenna, so that the first radiator 210 is used as a parasitic branch of the second antenna to improve the radiation characteristics of the second antenna.

[0195] In one embodiment, the electronic device 100 may further include a third antenna. The third antenna includes a third radiator 310. The second frame 2720 includes a fifth position 285, and the fourth position 284 is located between the third position 283 and the fifth position 285. The third radiator 310 is a conductive portion between the fifth position 285 and the fourth position 284.

[0196] Figure 12 to Figure 14 yes Fig.11 The simulation results of the antenna in the electronic device shown in Figure 1 are as follows. Fig.12 yes Fig.11 The S-parameter simulation results of the first antenna and the second antenna in the electronic device are shown. Fig.13 yes Fig.11 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown. Fig.14 yes Fig.11System efficiency and radiation efficiency of the second antenna in the electronic device shown.

[0197] It should be understood that for the sake of brevity, Figure 6 In the electronic device shown, only the first antenna is used as a subunit in the MIMO system, and the working frequency band includes at least the frequency band in sub6G, and the working frequency band of the second antenna includes the WiFi frequency band.

[0198] like Fig.12 As shown, when the electronic device communicates through the first antenna (S11) and the second antenna (S22) at the same time (the first antenna and the second antenna are both working), the first antenna resonates near 2.6GHz and 3.9GHz, and its resonant frequency band can include at least the frequency band in sub6G, and the second antenna resonates near 2.4GHz, and its resonant frequency band can include the WiFi frequency band. And the isolation (S12) between the first antenna and the second antenna is less than -18dB.

[0199] When the electronic device communicates only through the second antenna (the first antenna is not working and the second antenna is working), the second antenna can resonate near 2.4 GHz and 2.6 GHz, such as Fig.13 shown.

[0200] like Fig.14 As shown, in the WiFi frequency band, compared with the case where the first radiator does not act as a parasitic branch, the system efficiency of the second antenna is improved by about 0.8dB and the radiation efficiency is improved by about 1dB.

[0201] Fig.15 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0202] like Fig.15 As shown, the electronic device 100 may include a first housing 271 , a second housing 272 and a first rotating shaft 273 .

[0203] The first rotating shaft 273 is located between the first shell 271 and the second shell 272 , and the first rotating shaft 273 is rotatably connected to the first shell 271 and the second shell 272 respectively, so that the first shell 271 and the second shell 272 can rotate relative to each other.

[0204] The first shell 271 includes a first frame 2710 , and the second shell 272 includes a second frame 2720 .

[0205] The first frame 2710 includes a first position 281 and a second position 282. The second frame 2720 includes a third position 283 and a fourth position 284. The first radiator 210 is a conductive portion between the first position 281 and the second position 282. The second radiator 220 is a conductive portion between the third position 283 and the fourth position 284.

[0206] like Fig.16 As shown, when the electronic device 100 is in the folded state, the first radiator 210 and the second radiator 220 at least partially overlap along a first direction, where the first direction is the thickness direction of the electronic device 100, for example, the z direction.

[0207] In one embodiment, the first frame 2710 is coupled to the floor at the first position 281 and the first frame 2710 has a first gap at the second position 282. In one embodiment, the second frame 2720 has a second gap at the third position 283 and the second frame 2720 is coupled to the floor at the fourth position 284.

[0208] It should be understood that for the sake of simplicity of discussion, the embodiment of the present application only uses the example that one end of the radiator in the first antenna 201 and the second antenna 202 is an open end, the other end is a floor-coupled end, and operates in a quarter-wavelength mode. In actual applications, the first antenna 201 and the second antenna 202 can also operate in other modes.

[0209] In one embodiment, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) and the length L2 of the second radiator (the second frame 2720 between the third position 283 and the fourth position 284) satisfy: 1.5×L2≤L1≤2×L2.

[0210] In one embodiment, when the electronic device 100 communicates through the second antenna 202, the controller can control the first switch 241 to disconnect the first feeding circuit 231 from the first feeding point 211 (not electrically connected), and control the first port of the second switch 242 to be electrically connected to the first radiator 210 as an electronic component 251 corresponding to the parasitic branch of the second antenna 202, so that the first radiator 210 serves as a parasitic branch of the second antenna 202, thereby improving the communication performance of the electronic device 100.

[0211] It should be understood that for the sake of simplicity of discussion, in the embodiments of the present application, only the first antenna 201 is not working and the second antenna is working as an example for explanation. In actual production or design, when the first antenna 201 is working and the second antenna 202 is not working, the second radiator 220 of the second antenna 202 can also serve as a parasitic branch of the first antenna 201 to enhance the radiation characteristics of the first antenna 201. The embodiments of the present application do not impose any restrictions on this.

[0212] In one embodiment, the electronic device 100 may further include a third antenna 301. The third antenna 301 includes a third radiator 310. The second frame 2720 includes a fifth position 285 and a sixth position 286, and the third position 283, the fourth position 284, the fifth position 285 and the sixth position 286 are sequentially arranged along the extension direction of the second frame. The fifth position 285 is located between the fourth position 284 and the sixth position 286, and the fourth position 284 is located between the third position 283 and the fifth position 285. The third radiator 310 is a conductive portion between the fifth position 285 and the sixth position 286.

[0213] In one embodiment, the second frame 2720 defines a third slit at the fifth position 285 , and the second frame 2720 is coupled to the floor at the sixth position 286 .

[0214] In one embodiment, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) and the length L3 of the third radiator (the second frame 2720 between the fifth position 285 and the sixth position 286) satisfy: 1.8×L3≤L1≤3×L3.

[0215] In one embodiment, the electronic device 100 may further include a fourth antenna 302. The fourth antenna 302 includes a fourth radiator 320. The second frame 2720 includes a seventh position 287, and the third position 283 is located between the fourth position 284 and the seventh position 287. The third radiator 310 is a conductive portion between the seventh position 287 and the third position 283.

[0216] In one embodiment, the second frame 2720 is coupled to the floor at the seventh position 287 .

[0217] Fig.17 and Fig.18 yes Fig.16 The simulation results of the antenna in the electronic device shown in Figure 1 are as follows. Fig.17 yes Fig.11 The S-parameter simulation results of the second antenna and the third antenna when the first radiator in the electronic device is used as a parasitic branch are shown. Fig.18 yes Fig.11 System efficiency and radiation efficiency of the second antenna in the electronic device shown.

[0218] It should be understood that for the sake of brevity, Fig.11In the electronic device shown, only the example that the working frequency band of the first antenna includes at least part of the low frequency band (low band, LB) (698MHz-960MHz), the working frequency band of the second antenna includes the L1 band of GPS, the working frequency band of the third antenna may include at least part of the middle frequency band (middle band, MB) (1710MHz-2170MHz), and the working frequency band of the fourth antenna includes the WiFi band is used for illustration.

[0219] like Fig.17 As shown, when the electronic device communicates only through the second antenna and the third antenna (the first antenna is not working, the second antenna and the third antenna are working), the first radiator acts as a parasitic branch of the second antenna to enhance the radiation characteristics of the second antenna. The second antenna (S22) resonates near 1 GHz and 1.6 GHz, and its resonant frequency band may include the L1 band of GPS. The third antenna (S33) resonates near 1.8 GHz and 1.1 GHs, and its resonant frequency band may include the B3 band in MB. When the first radiator acts as a parasitic branch, the isolation (S23) between the second antenna and the third antenna is less than -8 dB.

[0220] like Fig.18 As shown, in the L1 frequency band of GPS, when the electronic device is in the unfolded state, the radiation efficiency of the second antenna is -2.57dB; when the electronic device is in the folded state and the first antenna works in the B5 frequency band in the LB, the radiation efficiency of the second antenna is -4.61dB; when the electronic device is in the folded state and the first antenna works in the B5 frequency band in the LB, the radiation efficiency of the second antenna is -5.41dB; when the electronic device is in the folded state and the first radiator in the first antenna acts as a parasitic branch, the radiation efficiency of the second antenna is -3.37dB. When the electronic device is in the folded state, the radiation efficiency of the second antenna is significantly improved compared to when the first radiator does not act as a parasitic branch.

[0221] Fig.19 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0222] It should be understood that Fig.19 In the electronic device 100 shown, Fig.16 The electronic device 100 shown is different only in that the lengths of the first radiator 210 and the second radiator 220 are different. Fig.16 In the electronic device 100 shown, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) and the length L2 of the second radiator (the second frame 2720 between the third position 283 and the fourth position 284) satisfy: 1.5×L2≤L1≤2×L2. Fig.19In the electronic device 100 shown, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) is substantially the same as the length L2 of the second radiator (the second frame 2720 between the third position 283 and the fourth position 284), satisfying: 0.9×L2≤L1≤1.1×L2.

[0223] Figure 20 to Figure 23 yes Fig.19 The simulation results of the antenna in the electronic device shown in Figure 1 are as follows. Fig. 20 yes Fig.19 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown. Fig.21 yes Fig.19 The system efficiency and radiation efficiency of the second antenna in the electronic device shown are when the first radiator acts as a parasitic branch. Fig. 22 yes Fig.19 The S-parameter simulation results of the first antenna when the second radiator in the electronic device is used as a parasitic branch are shown. Fig.23 yes Fig.19 The system efficiency and radiation efficiency of the first antenna in the electronic device shown are when the second radiator acts as a parasitic branch.

[0224] It should be understood that for the sake of brevity, Fig.19 In the electronic device shown, description is given by taking as an example that the working frequency band of the first antenna includes at least part of the frequency band in MB and the working frequency band of the second antenna includes the WiFi frequency band.

[0225] like Fig. 20 As shown, when the electronic device communicates only through the second antenna (the first antenna is not working and the second antenna is working), the first radiator as a parasitic branch of the second antenna will generate parasitic resonance near 2 GHz.

[0226] like Fig.21 As shown, in the WiFi frequency band, when the first radiator acts as a parasitic branch, the radiation efficiency and system efficiency of the second antenna are improved by about 2.7dB.

[0227] like Fig. 22 As shown, when the electronic device communicates only through the first antenna (the second antenna is not working and the first antenna is working), the second radiator as a parasitic branch of the first antenna will generate parasitic resonance near 1.68 GHz.

[0228] like Fig.23 As shown, in the MB band, when the second radiator acts as a parasitic branch, the radiation efficiency and system efficiency of the first antenna are improved by about 3dB.

[0229] Fig.24 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0230] It should be understood that Fig.24 In the electronic device 100 shown in FIG. Fig.16 The difference between the electronic device 100 shown is only the relative position of the first radiator 210 and the second radiator 220. Fig.16 In the electronic device 100 shown, the first radiator 210 and the second radiator 220 at least partially overlap along the first direction. Fig.24 In the electronic device 100 shown, the first radiator 210 and the second radiator 220 do not overlap along the first direction, the first gap at the second position 282 and the second gap at the third position 283 at least partially overlap along the first direction, and when the radiator acts as a parasitic branch, energy can be coupled through the electric field at the gap to generate parasitic resonance.

[0231] Figure 25 to Figure 28 yes Fig.24 The simulation results of the antenna in the electronic device shown in Figure 1 are as follows. Fig.25 yes Fig.24 The S-parameter simulation results of the second antenna when the first radiator in the electronic device is used as a parasitic stub are shown. Fig.26 yes Fig.24 The system efficiency and radiation efficiency of the second antenna in the electronic device shown are when the first radiator acts as a parasitic branch. Fig. 27 yes Fig.24 The S-parameter simulation results of the first antenna when the second radiator in the electronic device is used as a parasitic branch are shown. Fig.28 yes Fig.24 The system efficiency and radiation efficiency of the first antenna in the electronic device shown are when the second radiator acts as a parasitic branch.

[0232] It should be understood that for the sake of brevity, Fig.28 In the electronic device shown, description is given by taking as an example that the working frequency band of the first antenna includes at least part of the frequency band in the MB and the working frequency band of the second antenna includes the satellite frequency band.

[0233] like Fig.25 As shown, when the electronic device communicates only through the second antenna (the first antenna is not working and the second antenna is working), the first radiator as a parasitic branch of the second antenna will generate parasitic resonance near 2.3 GHz.

[0234] like Fig.26 As shown, in the satellite frequency band, when the first radiator acts as a parasitic branch, the radiation efficiency and system efficiency of the second antenna are improved by about 1.4dB.

[0235] like Fig. 27As shown, when the electronic device communicates only through the first antenna (the second antenna is not working and the first antenna is working), the second radiator as a parasitic branch of the first antenna will generate parasitic resonance near 1.85 GHz.

[0236] like Fig.28 As shown, in the MB band, when the second radiator acts as a parasitic branch, the radiation efficiency and system efficiency of the first antenna are improved by about 1.1 dB.

[0237] Fig.29 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0238] like Fig.29 As shown, the electronic device 100 may further include a third housing 274 and a second shaft 275. The second shaft 275 is located between the first housing 271 and the third housing 274, and the second shaft 275 is rotatably connected to the first housing 271 and the third housing 274, respectively, so that the first housing 271 and the third housing 274 can rotate relative to each other.

[0239] The first shell 271 includes a first frame 2710 , the second shell 272 includes a second frame 2720 , and the third shell 274 may include a third frame 2740 .

[0240] The first frame 2710 includes a first position 281 and a second position 282. The second frame 2720 includes a third position 283 and a fourth position 284. The first radiator 210 is a conductive portion between the first position 281 and the second position 282. The second radiator 220 is a conductive portion between the third position 283 and the fourth position 284.

[0241] It should be understood that in the above embodiments, only the foldable electronic device 100 including only two housings (two-fold electronic device) is used as an example for description. In actual production or design, the technical solution provided in the embodiment of the present application can also be applied to a device including multiple housings (multi-fold electronic device). Fig.25 As shown, the foldable electronic device 100 includes three shells for illustration.

[0242] For the sake of brevity, Fig.25 In the electronic device 100 shown, only the first radiator 210 includes a portion of the first frame 2710 and the second radiator 220 includes a portion of the second frame 2720 for illustration. In actual production or design, the first radiator 210 and the second radiator 220 may also be arranged at other positions, for example, the first radiator 210 includes a portion of the third frame 2740 and the second radiator 220 includes the second frame 2720. The embodiments of the present application do not limit this.

[0243] In one embodiment, the first frame 2710 is coupled to the floor at the first position 281 and the first frame 2710 has a first gap at the second position 282. In one embodiment, the second frame 2720 has a second gap at the third position 283 and the second frame 2720 is coupled to the floor at the fourth position 284.

[0244] like Fig.25 As shown, when the electronic device 100 is in a folded state, the first slit and the second slit partially overlap along a first direction, and the first radiator 210 and the second radiator 220 do not overlap along the first direction, and the first direction is the thickness direction of the electronic device 100, for example, the z direction.

[0245] It should be understood that for the sake of simplicity of discussion, the embodiments of the present application only illustrate the radiators in the first antenna 201 and the second antenna 202 operating in a quarter-wavelength mode. In actual applications, the first antenna 201 and the second antenna 202 may also operate in other modes. For example, the first frame 2710 has gaps at the first position and the second position 282, and the first end and the second end of the first radiator 210 are both open ends, operating in a half-wavelength mode.

[0246] In one embodiment, when the first radiator 210 operates in a quarter-wavelength mode, a length L1 of the first frame 2710 between the first position 281 and the second position 282 and a length L2 of the second frame 2720 between the third position 283 and the fourth position 284 satisfy: 0.5×L2≤L1≤L2.

[0247] In one embodiment, when the first radiator 210 operates in the half wavelength mode, the length L1 of the first frame 2710 between the first position 281 and the second position 282 and the length L2 of the second frame 2720 between the third position 283 and the fourth position 284 satisfy: L2≤L1≤1.5×L2.

[0248] In one embodiment, the electronic device 100 may further include a third antenna 301. The third antenna 301 includes a third radiator 310. The second frame 2720 includes a fifth position 285, and the third position 283 is located between the fourth position 284 and the fifth position 285. The third radiator 310 is a conductive portion between the third position 283 and the fifth position 285.

[0249] In one embodiment, the second frame 2720 is coupled to the floor at the fifth position 285 .

[0250] In one embodiment, when the electronic device 100 is in the folded state, the first radiator 210 and the third radiator 310 partially overlap along the first direction.

[0251] In one embodiment, when the first radiator 210 operates in a quarter-wavelength mode, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) and the length L3 of the third radiator (the second frame 2720 between the third position 283 and the fifth position 285) satisfy: L3≤L1≤2×L3.

[0252] In one embodiment, when the first radiator 210 operates in half wavelength mode, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) and the length L3 of the third radiator (the second frame 2720 between the third position 283 and the fifth position 285) satisfy: 2×L3≤L1≤3×L3.

[0253] In one embodiment, the electronic device 100 may further include a fourth antenna 302. The fourth antenna 302 includes a fourth radiator 320. The second frame 2720 includes a sixth position 286 and a seventh position 287, the sixth position 286 is located between the fourth position 284 and the seventh position 287, and the fourth position 284 is located between the third position 283 and the sixth position 286. The fourth radiator 320 is a conductive portion between the sixth position 286 and the seventh position 287.

[0254] In one embodiment, the second frame 2720 defines a third slit at the sixth position 286 , and the second frame 2720 is coupled to the floor at the seventh position 287 .

[0255] In one embodiment, when the first radiator 210 operates in a quarter-wavelength mode, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) and the length L4 of the fourth radiator (the second frame 2720 between the sixth position 286 and the seventh position 287) satisfy: 0.7×L4≤L1≤1.5×L4.

[0256] In one embodiment, when the first radiator 210 operates in half wavelength mode, the length L1 of the first radiator (the first frame 2710 between the first position 281 and the second position 282) and the length L4 of the fourth radiator (the second frame 2720 between the sixth position 286 and the seventh position 287) satisfy: L4≤L1≤3×L4.

[0257] In one embodiment, the third frame 2740 may further include an eighth position 331 and a ninth position 332. The first antenna 201 includes a fifth radiator 341. The fifth radiator 341 is a conductive portion between the eighth position 331 and the ninth position 332.

[0258] In one embodiment, the third frame 2740 defines a fourth slit at the eighth position 331. When the electronic device 100 is in a folded state, the first slit, the second slit, and the fourth slit at least partially overlap along the first direction.

[0259] It should be understood that the fifth radiator 341 can be used as a parasitic branch of the first antenna 201 to improve the radiation performance of the first antenna 201. For the sake of simplicity, in the embodiment of the present application, only the third frame 2740 is provided with a break at the ninth position 332 as an example for explanation. In actual production or design, the third frame 2740 can also be coupled with the floor at the ninth position 332.

[0260] In one embodiment, the third frame 2740 also includes a first connection point 212. The first connection point 212 is located between the eighth position 331 and the ninth position 332. The electronic device 100 also includes a fifth switch. The first port of the fifth switch is coupled to the floor, and the second port of the fifth switch is coupled to the first connection point 212. The fifth port of the controller is electrically connected to the control port of the fifth switch to control the switching state of the fifth switch. In one embodiment, at least one electronic component is electrically connected between the second port of the fifth switch and the first connection point 212. In one embodiment, at least one electronic component is electrically connected between the first port of the fifth switch and the floor.

[0261] It should be understood that the fifth switch can be used to adjust the radiation characteristics of the fifth radiator 341, for example, it can be used to adjust the frequency of the parasitic resonance generated by the fifth radiator 341. In one embodiment, when the electronic device 100 works through the first antenna 201, the fifth radiator 341 can be used to improve the radiation characteristics (for example, the working bandwidth) of the first antenna 201. When the electronic device 100 does not work through the first antenna 201, the fifth radiator 341 can be used to improve the radiation characteristics (for example, the working bandwidth) of the second antenna 202 or the third antenna 301.

[0262] In one embodiment, the first frame 2710 may further include a tenth position 333, and the second position 282 is located between the tenth position 333 and the first position 281. The first antenna 201 includes a sixth radiator 342. The sixth radiator 342 is a conductive portion between the second position 282 and the tenth position 333.

[0263] It should be understood that the sixth radiator 342 can be used as a parasitic branch of the first antenna 201 to improve the radiation performance of the first antenna 201. For the sake of simplicity, in the embodiment of the present application, only the first frame 2710 is provided with a break at the tenth position 333 as an example for explanation. In actual production or design, the first frame 2710 can also be coupled with the floor at the tenth position 333.

[0264] In one embodiment, the third frame 2740 also includes a second connection point 213. The second connection point 213 is located between the second position 282 and the tenth position 333. The electronic device 100 also includes a sixth switch. The first port of the sixth switch is coupled to the floor, and the second port of the sixth switch is coupled to the second connection point 213. The sixth port of the controller is electrically connected to the control port of the sixth switch to control the switching state of the sixth switch. In one embodiment, at least one electronic component is electrically connected between the second port of the sixth switch and the second connection point 213. In one embodiment, at least one electronic component is electrically connected between the first port of the sixth switch and the floor.

[0265] It should be understood that the sixth switch can be used to adjust the radiation characteristics of the sixth radiator 342, for example, it can be used to adjust the frequency of the parasitic resonance generated by the sixth radiator 342. In one embodiment, when the electronic device 100 works through the first antenna 201, the sixth radiator 342 can be used to improve the radiation characteristics (for example, the working bandwidth) of the first antenna 201. When the electronic device 100 does not work through the first antenna 201, the sixth radiator 342 can be used to improve the radiation characteristics (for example, the working bandwidth) of the second antenna 202 or the third antenna 301.

[0266] Fig.30 yes Fig.29 System efficiency and radiation efficiency of the second antenna in the electronic device shown. Fig.31 yes Fig.29 The system efficiency and radiation efficiency of the third antenna in the electronic device are shown.

[0267] It should be understood that for the sake of brevity, Fig.29 In the electronic device shown, it is described as follows that the working frequency band of the first antenna includes at least part of the satellite frequency band, the working frequency band of the second antenna includes the L1 frequency band of GPS, and the working frequency band of the third antenna includes the WiFi frequency band.

[0268] like Fig.30 As shown, when the electronic device only uses the second antenna (the first antenna is not working, the second antenna is working, and the third antenna part is working), compared with not setting up parasitic branches and only the first radiator serving as a parasitic branch, the radiation efficiency of the second antenna is improved by about 0.7dB, and when the first radiator, the fifth radiator and the sixth radiator serve as parasitic branches, the radiation efficiency of the second antenna is improved by about 1.4dB.

[0269] like Fig.31 As shown, when the electronic device communicates only through the second antenna and the third antenna (the first antenna is not working, the second antenna portion is working, and the third antenna is working), compared to when no parasitic branches are set, when the first radiator, the fifth radiator and the sixth radiator are used as parasitic branches, the radiation efficiency of the third antenna is improved by about 0.7dB.

[0270] Fig.32 It is a schematic diagram of an antenna switching method 400 provided in an embodiment of the present application, which can be applied to the electronic device shown in the above embodiment.

[0271] S410: The controller receives a first signal, where the first signal is used to indicate the working state of the second antenna. For example, the working state of the second antenna can be understood as whether the electronic device communicates through the second antenna.

[0272] In one embodiment, the AP sends a first signal to the controller. In one embodiment, the electronic device may further include a SoC. The SoC includes the AP, the controller, and the first modem.

[0273] In one embodiment, when the second modem is directly electrically connected to the controller through the port, the second modem sends a first signal to the controller.

[0274] In one embodiment, the second modem sends a second signal to the AP, where the second signal may include a working frequency band of the second antenna and service information.

[0275] S420: The controller determines the switch states of the first switch and the second switch according to the first signal.

[0276] In one embodiment, the controller can determine whether the electronic device communicates through the second antenna according to the first signal, and can switch the switch states of the first switch and the second switch according to whether the second antenna communicates. For example, when the first antenna operates in the cellular frequency band and the second antenna operates in the WiFi frequency band, when the electronic device communicates through the second antenna, the controller can switch the switch states of the first switch and the second switch, so that the first radiator acts as a parasitic branch of the second antenna, thereby improving the radiation characteristics of the second antenna.

[0277] In one embodiment, after the controller determines the switch state of the first switch and the second switch according to the first signal, the method may further include: the controller sends a third signal to the switch, the third signal is used to instruct the switch to switch the first switch and the second switch to the switch state.

[0278] In one embodiment, the switch is an RF IC.

[0279] S430, the first modem sends a fourth signal to the controller, where the fourth signal is used to indicate the working state of the first antenna. For example, the working state of the first antenna can be understood as whether the electronic device communicates through the first antenna.

[0280] In one embodiment, the controller determines the switch states of the first switch and the second switch according to the first signal and the fourth signal.

[0281] In one embodiment, the fourth signal may include the working frequency band of the first antenna and service information.

[0282] Fig.33 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0283] like Fig.33 As shown, the electronic device 100 includes a frame 11 , a first antenna 410 , a second antenna 420 and a floor 300 .

[0284] At least a portion of the frame 11 is spaced apart from the floor 300 .

[0285] The frame 11 includes a first position 401, a second position 402, a third position 403, and a fourth position 404, which are sequentially arranged. The second position 402 and the third position 403 are located at the first side 131 of the frame 11. In one embodiment, the first position 401 may be located at the second side 132, and the second side 132 intersects the first side 131 at an angle. In one embodiment, the fourth position 404 may be located at the third side 133, and the third side 133 intersects the first side 131 at an angle.

[0286] The working frequency band of the first antenna 410 includes the first frequency band. The first antenna 410 includes a first radiator 411. The first radiator 411 includes a conductive portion of the frame between the first position 401 and the second position 402.

[0287] The operating frequency band of the second antenna 420 includes a second frequency band and a third frequency band. The second antenna 420 includes a second radiator 421 and a first tuning circuit 431. The second radiator 421 includes a conductive portion of the frame 11 between the third position 403 and the fourth position 404. The second radiator 421 includes a first connection point 422, and the first tuning circuit 431 is coupled and connected between the first connection point 422 and the floor 300. The first tuning circuit 431 can be used to switch the operating frequency band of the second antenna 420.

[0288] The first frequency band is the same as or adjacent to the second frequency band, and the first frequency band is different from or adjacent to the third frequency band. When the first antenna 410 operates in the first frequency band, the first tuning circuit 431 switches the operating frequency band of the second antenna 420 from the second frequency band to the third frequency band.

[0289] It should be understood that according to the technical solution provided in the embodiment of the present application, when the first antenna 410 operates in the first frequency band, the second antenna 420 operates in the second frequency band. Since the first frequency band and the second frequency band are the same or adjacent, and the second position 402 and the third position 403 are located at the first side 131 of the frame 11, the second antenna 420 has a strong interference with the first antenna 410, which deteriorates the radiation characteristics (for example, radiation efficiency) of the first antenna 410. When the first antenna 410 operates in the first frequency band, the second antenna 420 operates in the third frequency band, and the second antenna 420 does not interfere with the first antenna 410, thereby improving the radiation characteristics of the first antenna 410.

[0290] At the same time, the first tuning circuit 431 described in the embodiment of the present application switches the working frequency band of the second antenna 420 from the second frequency band to the third frequency band. It can be understood that the second antenna can resonate in the third frequency band, and the electronic device 100 can communicate with external devices in the third frequency band.

[0291] In one embodiment, the frame 11 can be coupled to the floor at the first position 401, the third position 403, and the fourth position 404. The frame 11 has a first gap at the second position 402. The first end of the first radiator 411 is a ground end (one end at the first position 401), and the second end is an open end (one end at the second position 402). The first end and the second end of the second radiator 421 are both ground ends.

[0292] It should be understood that the structures of the first antenna 410 and the second antenna 420 may be determined according to actual production or design, and the present application does not impose any limitation thereto.

[0293] In one embodiment, the second radiator 421 is provided with a second slit. In one embodiment, the second slit may be located in a central area of ​​the second radiator 421. The central area may be understood as an area within 10 mm from the center of the second radiator 421.

[0294] In one embodiment, the length of the border 11 between the second position 402 and the third position 403 may be less than or equal to three-half of the first wavelength. In one embodiment, the length of the border 11 between the second position 402 and the third position 403 may be less than or equal to the first wavelength. In one embodiment, the length of the border 11 between the second position 402 and the third position 403 may be less than or equal to one-half of the first wavelength. The first wavelength is the wavelength corresponding to the first frequency band.

[0295] It should be understood that the wavelength corresponding to the first frequency band can be understood as the vacuum wavelength corresponding to the center frequency of the first frequency band. Since there is a certain correspondence between the vacuum wavelength and the medium wavelength, the vacuum wavelength can be converted to the medium wavelength, which will not be described in detail in the embodiments of the present application.

[0296] In one embodiment, the length of the frame 11 between the second position 402 and the third position 403 may be less than or equal to 160 mm. In one embodiment, the length of the frame 11 between the second position 402 and the third position 403 may be less than or equal to 120 mm. In one embodiment, the length of the frame 11 between the second position 402 and the third position 403 may be less than or equal to 90 mm. In one embodiment, the length of the frame 11 between the second position 402 and the third position 403 may be less than or equal to 75 mm.

[0297] In one embodiment, the first antenna 410 may include a first feeding circuit 441. The first radiator 411 includes a first feeding point, and the first feeding circuit 441 is coupled to the first feeding point to feed an electrical signal.

[0298] In one embodiment, the second antenna 420 may include a second feeding circuit 442. The second radiator 421 includes a second feeding point, and the second feeding circuit 442 is coupled to the second feeding point to feed an electrical signal.

[0299] In one embodiment, the first tuning circuit 431 is a circuit including a switch. The switch can be used to switch electronic components of different resistance values, capacitance values, or inductance values ​​coupled to the first connection point 422 in different circuit states. Alternatively, the switch can also be in an open state so that the electronic component is not coupled to the first connection point 422. Alternatively, the switch can directly couple the floor 300 to the first connection point 422, and no electronic component is provided between the floor 300 and the first connection point 422. For the sake of simplicity in discussion, the tuning circuits in the embodiments of the present application can be understood accordingly and will not be described one by one.

[0300] In one embodiment, the first antenna 410 may include a second tuning circuit 432, and the second tuning circuit 432 may be used to switch the working frequency band of the first antenna 410. The first radiator 411 includes a second connection point 412, and the second tuning circuit 432 is coupled between the second connection point 412 and the floor 300.

[0301] In one embodiment, the operating frequency band of the first antenna 410 also includes a fourth frequency band. The fourth frequency band is not the same as or adjacent to the second frequency band. When the second antenna 420 operates in the second frequency band, the second tuning circuit 432 switches the operating frequency band of the first antenna 410 from the first frequency band to the fourth frequency band.

[0302] It should be understood that when the second antenna 420 operates in the second frequency band, the second antenna 420 operates in the fourth frequency band, and the first antenna 410 does not interfere with the second antenna 420 , thereby improving the radiation characteristics of the second antenna 420 .

[0303] In one embodiment, the electronic device 100 may further include an AP and a first modem. The AP is electrically connected to the first modem, and the first modem is electrically connected to the first tuning circuit 431 .

[0304] When the first antenna 410 operates in the first frequency band, the second antenna 420 switches the operating frequency band from the second frequency band to the third frequency band by the first tuning circuit 431, including: the AP sends switching information to the first modem, the switching information is used to indicate that the operating frequency band of the second antenna 420 is the third frequency band, and the first modem controls the first tuning circuit 431 to switch the operating frequency band of the second antenna 420 from the second frequency band to the third frequency band according to the switching information.

[0305] In one embodiment, the electronic device 100 may further include a second modem. The AP is electrically connected to the second modem, and the second modem is electrically connected to the second tuning circuit 432 .

[0306] When the second antenna 420 operates in the second frequency band, the first antenna 410 switches the operating frequency band from the first frequency band to the fourth frequency band by the second tuning circuit 432, including: the AP sends switching information to the second modem, the switching information is used to indicate that the operating frequency band of the first antenna 410 is the fourth frequency band, and the second modem controls the second tuning circuit 432 to switch the operating frequency band of the first antenna 410 from the first frequency band to the fourth frequency band according to the switching information.

[0307] In one embodiment, the first frequency band and the second frequency band can both be part of the communication frequency bands in the cellular network, for example, part of the communication frequency band in the low frequency band (698MHz-960MHz), or part of the communication frequency band in the medium frequency band (1710MHz-2170MHz), or part of the communication frequency band in the high frequency band (2300MHz-2690MHz).

[0308] In one embodiment, the first frequency band and the second frequency band may be communication frequency bands in different communication systems. The first frequency band includes part of the communication frequency band in a non-cellular network. The second frequency band includes part of the communication frequency band in a cellular network, for example, part of the communication frequency band in a medium frequency band (1710 MHz-2170 MHz), or part of the communication frequency band in a high frequency band (2300 MHz-2690 MHz).

[0309] In one embodiment, the first frequency band is the 2.4G frequency band (2.4-2.485GHz) of WiFi, and the second frequency band is B40 (2.3-2.4GHz) or B41 (2.496-2.69GHz) in LTE. In one embodiment, the L1 frequency band (1578.42±1.023MHz) in GPS, and the second frequency band is B3 (1.71-1.785GHz) in LTE.

[0310] In one embodiment, the first modem may be used in a non-cellular network and the second modem may be used in a cellular network.

[0311] Fig.34 and Fig.35 yes Fig.33 The simulation results of the antenna in the electronic device 100 are shown. Fig.34 yes Fig.33 S-parameter simulation results of the first antenna and the second antenna are shown. Fig.35 yes Fig.33 The simulation results of the radiation efficiency of the first antenna are shown.

[0312] It should be understood that for the sake of simplicity of discussion, in the embodiments of the present application, only the example in which the first frequency band includes the WiFi frequency band (2.4-2.485 GHz) and the second frequency band includes B41 (2.496-2.69 GHz) in LTE is used for illustration.

[0313] like Fig.34 As shown, when the second antenna operates in the second frequency band, resonance can be generated near 2.7 GHz, and the corresponding resonance frequency band may include B41 (2.496-2.69 GHz) in LTE. At the same time, when the second antenna operates in the first frequency band or the second frequency band, the resonance generated by the first antenna near 2.4 GHz is less affected.

[0314] like Fig.35 As shown, when the first antenna works in the first frequency band, the second antenna works in the second frequency band, and the radiation efficiency of the first antenna is -5.8dB. When the first antenna works in the first frequency band, the second antenna works in the third frequency band, and the radiation efficiency of the first antenna is -4.2dB, which is an increase of about 1.6dB.

[0315] Fig.36 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0316] like Fig.36 As shown, the second position 402 and the third position 403 are the same (overlap), and the length of the border 11 between the second position 402 and the third position 403 is zero.

[0317] The frame 11 is coupled to the floor 300 at the first position 401. The frame 11 is provided with a first gap and a second gap at the second position 402 and the fourth position 404.

[0318] In one embodiment, the first position 401 , the second position 402 , the third position 403 , and the fourth position 404 are all located at the second side 132 of the frame 11 .

[0319] In one embodiment, the first end of the first radiator 411 is a ground end (an end at the first position 401), and the second end is an open end (an end at the second position 402). The first end of the second radiator 421 is a ground end (an end at the third position 403), and the second end is an open end (an end at the fourth position 404). In one embodiment, the second end of the first radiator 411 is opposite to and in complementary contact with the first end of the second radiator 421.

[0320] It should be understood that Fig.36 The electronic device 100 is shown with Fig.33 The difference between the electronic device 100 shown is only the difference in the structure of the second antenna 420 and the difference in the first position 401 , the second position 402 , the third position 403 and the fourth position 404 .

[0321] Fig.36 The electronic device 100 is shown with Fig.33 Similar parts of the electronic device 100 shown are not described one by one, for example, the relationship between the first frequency band and the second frequency band and the third frequency band; the relationship between the tuning circuit and the modem and the AP; the structure of the tuning circuit, etc.

[0322] Fig.37 yes Fig.36 The simulation results of the radiation efficiency of the first antenna are shown.

[0323] It should be understood that for the sake of simplicity of discussion, in the embodiments of the present application, only the example in which the first frequency band includes the WiFi frequency band (2.4-2.485 GHz) and the second frequency band includes B41 (2.496-2.69 GHz) in LTE is used for illustration.

[0324] like Fig.37 As shown, when the first antenna works in the first frequency band, the second antenna works in the second frequency band, and the radiation efficiency of the first antenna is -4.1dB. When the first antenna works in the first frequency band, the second antenna works in the third frequency band, and the radiation efficiency of the first antenna is -3.1dB, which is an increase of about 1dB.

[0325] Fig.38 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0326] like Fig.38 As shown, the electronic device 100 includes a frame 11 , a first antenna 410 , a second antenna 420 and a floor 300 .

[0327] At least a portion of the frame 11 is spaced apart from the floor 300 .

[0328] The frame 11 includes a first position 401, a second position 402 and a third position 403 which are arranged in sequence. The frame 11 is coupled to the floor 300 at the second position 402.

[0329] The working frequency band of the first antenna 410 includes the first frequency band. The first antenna 410 includes a first radiator 411. The first radiator 411 includes a conductive portion of the frame between the first position 401 and the second position 402.

[0330] The operating frequency band of the second antenna 420 includes a second frequency band and a third frequency band. The second antenna 420 includes a second radiator 421 and a first tuning circuit 431. The second radiator 421 includes a conductive portion of the frame 11 between the second position 402 and the third position 403. The second radiator 421 includes a first connection point 422, and the first tuning circuit 431 is coupled and connected between the first connection point 422 and the floor 300. The first tuning circuit 431 can be used to switch the operating frequency band of the second antenna 420.

[0331] The first frequency band is the same as or adjacent to the second frequency band, and the first frequency band is different from or adjacent to the third frequency band. When the first antenna 410 operates in the first frequency band, the first tuning circuit 431 switches the operating frequency band of the second antenna 420 from the third frequency band to the second frequency band.

[0332] It should be understood that according to the technical solution provided in the embodiment of the present application, when the first antenna 410 operates in a first frequency band, the second antenna 420 operates in a second frequency band. Since the first frequency band and the second frequency band are the same or adjacent to each other, when the first radiator 411 generates a main resonance, the second radiator 421 can be stimulated to generate a parasitic resonance, and the radiation characteristics (for example, radiation efficiency, operating bandwidth) of the first antenna 410 can be improved by utilizing the parasitic resonance.

[0333] In one embodiment, the length of the border 11 between the first position 401 and the second position 402 is smaller than the length of the border 11 between the second position 402 and the third position 403 .

[0334] In one embodiment, two thirds of the length of the border 11 between the first position 401 and the second position 402 is less than or equal to the length of the border 11 between the second position 402 and the third position 403 .

[0335] In one embodiment, the first frequency band and the second frequency band may include at least part of the middle band (MB) (1710MHz-2170MHz) or at least part of the high band (HB) (2300MHz-2690MHz). The third frequency band may include at least part of the low band (LB) (698MHz-960MHz).

[0336] It should be understood that the third frequency band can be generated by the quarter wavelength mode (fundamental mode) of the second radiator 421, and the second frequency band can be generated by the three quarter wavelength mode (higher order mode) of the second radiator 421. When the first antenna 410 operates in the intermediate frequency band or the high frequency band, the higher order mode (for example, the three quarter wavelength mode) of the second antenna 420 can be excited by coupling to generate parasitic resonance, so as to improve the radiation characteristics (for example, radiation efficiency, working bandwidth) of the first antenna.

[0337] In one embodiment, the resonance point frequency of the parasitic resonance may be greater than the resonance point frequency of the main resonance, or may be less than the resonance point frequency of the main resonance, which may be determined according to production or design.

[0338] In one embodiment, the difference between the resonance point frequency of the parasitic resonance and the resonance point frequency of the main resonance is less than or equal to 200 MHz.

[0339] In one embodiment, the frame 11 can be coupled to the floor at the first position 401. The frame 11 has a first gap at the third position 403. The first end and the second end of the first radiator 411 are both grounded. The first end of the second radiator 421 is a grounded end (one end at the second position 402), and the second end is an open end (one end at the third position 403).

[0340] In one embodiment, the first radiator 411 is provided with a second slit. In one embodiment, the second slit may be located in a central area of ​​the first radiator 411. The central area may be understood as an area within 10 mm from the center of the first radiator 411.

[0341] In one embodiment, the first antenna 410 may include a first feeding circuit 441. The first radiator 11 includes a first feeding point, and the first feeding circuit 441 is coupled to the first feeding point to feed an electrical signal.

[0342] In one embodiment, the second antenna 420 may include a second feeding circuit 442. The second radiator 421 includes a second feeding point, and the second feeding circuit 442 is coupled to the second feeding point to feed an electrical signal.

[0343] In one embodiment, the first antenna 410 may include a second tuning circuit 432, which may be used to switch the resonance point frequency of the main resonance generated by the first antenna 410. The first radiator 411 includes a second connection point 412, and the second tuning circuit 432 is coupled between the second connection point 412 and the floor 300.

[0344] In one embodiment, the electronic device 100 may further include a modem. The modem is electrically connected to the first tuning circuit 431 .

[0345] When the first antenna 410 operates in the first frequency band, the first tuning circuit 431 of the second antenna 420 switches the operating frequency band from the third frequency band to the second frequency band, including: the modem controls the first tuning circuit 431 to switch the operating frequency band of the second antenna 420 from the third frequency band to the second frequency band.

[0346] It should be understood that the solutions provided in the embodiments of the present application can be applied to the electronic device 100 at the same time. Fig.39 As shown, the electronic device 100 may include Fig.33 , Fig.36 and Fig.38 The antenna shown is not limited in the embodiments of the present application and can be adjusted according to actual production or design.

[0347] Fig.40 yes Fig.38 The simulation results of the radiation efficiency of the first antenna are shown.

[0348] It should be understood that, for the sake of simplicity of discussion, in the embodiments of the present application, only the first frequency band including the high frequency band (2300 MHz-2690 MHz) is taken as an example for description.

[0349] like Fig.40 As shown, when the first antenna works in the first frequency band, the second antenna works in the second frequency band, and in the high frequency band, the radiation efficiency of the first antenna is improved by about 0.5 dB on average.

[0350] Fig.41 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0351] like Fig.41 As shown, the electronic device 100 may include a first antenna 510 and a second antenna 520 .

[0352] It should be understood that the embodiment of the present application does not limit the structure of the first antenna 510 and the second antenna 520. The first antenna 510 and the second antenna 520 may be similar to the first antenna and the second antenna shown in the embodiment of the present application. Figure 6 , Fig.11 , Fig.16 , Fig.19 , Fig.24 , Fig.29 , Fig.33 , Fig.36 or Fig.38 The first antenna and the second antenna shown in the figure are not described one by one for the sake of brevity of discussion.

[0353] Meanwhile, similar first and second antennas can be understood as having the same boundary conditions of the antenna radiators, as well as the relative position relationship between the first and second antennas, etc. The same boundary conditions can include whether the radiators include the same ground end / open end.

[0354] The first antenna 510 includes a first tuning circuit 511. In one embodiment, the first tuning circuit 511 can be coupled between the radiator of the first antenna 510 and the floor. The first tuning circuit 511 can be used to switch the resonance point frequency of the resonance generated by the first antenna 510, so that the first antenna 510 works in different communication frequency bands.

[0355] The second antenna 520 includes a second tuning circuit 521. The second tuning circuit 521 can be coupled between the radiator of the second antenna 520 and the floor. The second tuning circuit 521 can be used to switch the resonance point frequency of the resonance generated by the second antenna 520, so that the second antenna 520 works in different communication frequency bands.

[0356] The electronic device 100 may further include a switch 531, a first modem 541, and a second modem 542. In one embodiment, the first modem 541 may be used to process an electrical signal sent or received by the first antenna 510. In one embodiment, the second modem 542 may be used to process an electrical signal sent or received by the second antenna 520.

[0357] A connection port of the switch 531 is electrically connected to the first tuning circuit 511 .

[0358] The first port of the first modem 541 is electrically connected to the control port of the switch 531. The second port of the first modem 541 is electrically connected to the first switching port of the switch 531.

[0359] The first port of the second modem 542 is electrically connected to the second switch port of the switch 531 . The second port of the second modem 542 is electrically connected to the second tuning circuit 521 .

[0360] In one embodiment, the control port of the switch 531 can be used to switch the electrical connection state between the connection port of the switch 531 and the first switch port, or control the electrical connection state between the connection port of the switch 531 and the second switch port.

[0361] It should be understood that according to the technical solution provided in the embodiment of the present application, when the electronic device 100 is in different communication states, the antenna in the idle state (not working) of the first antenna 510 and the second antenna 520 can improve the radiation performance (for example, radiation efficiency) of the working antenna, thereby enabling the electronic device 100 to have better communication quality.

[0362] When the first antenna 510 and the second antenna 520 work at the same time, the first modem 541 controls the switch 531 through the first port to electrically connect the connection port to the first switching port. Since the connection port of the switch 531 is electrically connected to the first switching port, the first modem 541 can control the first tuning circuit 511 to make the first antenna 510 work in the corresponding working frequency band. The second modem 542 controls the second tuning circuit 521 to make the second antenna 520 work in the corresponding working frequency band.

[0363] When the first antenna 510 is not working and the second antenna 520 is working, the second modem 542 controls the second tuning circuit 521 so that the second antenna 520 works in the corresponding working frequency band. The first modem 541 controls the switch 531 through the first port to electrically connect the connection port with the second switching port. Since the connection port of the switch 531 is electrically connected to the second switching port, the second modem 542 can control the first tuning circuit 511 so that the radiator of the first antenna 510 serves as a parasitic branch of the second antenna 520, which can be used to improve the radiation performance (for example, radiation efficiency) of the second antenna 520.

[0364] At the same time, when the first antenna 510 is used as a parasitic branch of the second antenna 520, when the first antenna 510 needs to monitor, the first modem 541 controls the switch 531 through the first port to electrically connect the connection port with the first switching port, and the first modem 541 controls the first tuning circuit 511 to enable the first antenna 510 to monitor in the corresponding working frequency band. After the monitoring is completed, the first modem 541 controls the switch 531 through the first port to electrically connect the connection port with the second switching port, so that the radiator of the first antenna 510 is used as a parasitic branch of the second antenna 520.

[0365] When the first antenna 510 is working and the second antenna 520 is not working, the first modem 541 controls the switch 531 through the first port to electrically connect the connection port to the first switching port. Since the connection port of the switch 531 is electrically connected to the first switching port, the first modem 541 can control the first tuning circuit 511 to make the first antenna 510 work in the corresponding working frequency band. The second modem 542 controls the second tuning circuit 521 to make the radiator of the second antenna 520 act as a parasitic branch of the first antenna 510, which can be used to improve the radiation performance (for example, radiation efficiency) of the first antenna 510.

[0366] At the same time, when the second antenna 520 is used as a parasitic branch of the first antenna 510, when the second antenna 520 needs to perform monitoring, the second modem 542 controls the second tuning circuit 521 to make the second antenna 520 perform monitoring in the corresponding working frequency band. After the monitoring is completed, the second modem 542 controls the second tuning circuit 521 to make the radiator of the second antenna 520 act as a parasitic branch of the first antenna 510.

[0367] In one embodiment, the operating frequency band of the first antenna 510 may be at least part of the communication frequency band in the non-cellular network, for example, a WiFi frequency band, a BT frequency band, a GPS frequency band, or may also include a satellite communication frequency band. In one embodiment, the operating frequency band of the second antenna 520 may include at least part of the communication frequency band in the cellular network, for example, B1 (1920MHz-1980MHz), B3 (1710MHz-1785MHz) and B7 (2500MHz-2570MHz) in LTE.

[0368] In one embodiment, the working frequency band of the first antenna 510 is the 2.4G frequency band of WiFi or the L1 frequency band of GPS. The working frequency band of the second antenna 520 is the communication frequency band within the range of 1710MHz-2170MHz, or the communication frequency band within the range of 2300MHz-2690MHz.

[0369] In one embodiment, the electronic device 100 further includes an AP 540 and a controller 530. The first port of the AP 540 is electrically connected to the first port of the controller 530, and the second port of the AP 540 is electrically connected to the third port of the first modem 541. The second port of the controller 530 is electrically connected to the third port of the second modem 542.

[0370] In one embodiment, the controller 530 may be a microcontroller unit (MCU).

[0371] It should be understood that the AP 540 may be used to send the operating state of the first antenna 510 to the controller 530. For example, the operating state of the first antenna 510 may be understood as whether the electronic device 100 communicates through the first antenna 510. The second modem 542 may be used to send the operating state of the second antenna 520 to the controller 530. For example, the operating state of the second antenna may be understood as whether the electronic device 100 communicates through the second antenna 520.

[0372] When the electronic device 100 communicates only through one of the first antenna 510 and the second antenna 520, the controller 530 can control the idle (non-working) antenna according to the working status of the first antenna 510 and the second antenna 520 to improve the radiation performance (for example, radiation efficiency) of the working antenna, thereby enabling the electronic device 100 to have better communication quality.

[0373] In one embodiment, the AP 540 sends a first signal to the controller 530, and the controller 530 can determine whether the electronic device communicates through the first antenna 510 according to the first signal. The second modem 542 sends a second signal to the controller 530, and the controller 530 can determine whether the electronic device communicates through the second antenna 520 according to the second signal. The controller 530 determines the working state of the first tuning circuit 511 and the second tuning circuit 521 according to the first signal and the second signal, so that the antenna generates corresponding resonance.

[0374] In one embodiment, the first signal may include the operating frequency band and service information of the first antenna 510. The second signal may include the operating frequency band and service information of the second antenna 520.

[0375] In one embodiment, the controller 530 sends a third signal to the second modem 542. The second modem 542 determines the working status of the first tuning circuit 511 and the second tuning circuit 521 according to the third signal.

[0376] In one embodiment, the electronic device includes a first chip, and the first chip includes a controller 530 and a second modem 542. The controller 530 and the second modem 542 are integrated in the same chip.

[0377] It should be understood that the controller 530 and the second modem 542 are independently set, and the controller 530 and the second modem 542 are connected through an interface, which will cause the timing of the transmitted electrical signal to be disordered, requiring a complex processing process. When the controller 530 and the second modem 542 are integrated in the same chip (the first chip includes the controller 530 and the second modem 542), the controller 530 and the second modem 542 are hardware bound through a circuit, which will not cause the timing of the transmitted electrical signal to be disordered.

[0378] In one embodiment, the electronic device 100 may further include a system on chip (SoC). The SoC may include an AP 540, a controller 530, and a second modem 262, wherein the AP 540, the controller 530, and the second modem 262 are integrated into the SoC.

[0379] Fig.42is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0380] like Fig.42 As shown, the electronic device 100 further includes a switch 532 .

[0381] The connection port of the switch 532 is electrically connected to the second tuning circuit 521. The first switching port of the switch 532 is electrically connected to the fourth port of the first modem 541. The second switching port of the switch 532 is electrically connected to the second port of the second modem 542. The fourth port of the second modem 542 is electrically connected to the control port of the switch 532.

[0382] In one embodiment, the control port of the switch 532 can be used to switch the electrical connection state between the connection port of the switch 532 and the first switch port and the second switch port.

[0383] It should be understood that Fig.42 The electronic device 100 is shown with Fig.41 The electronic device 100 shown differs only in the switch 532 .

[0384] exist Fig.41 In the electronic device 100 shown, the first modem 541 can electrically connect the connection port of the switch 531 to the first switching port or the second switching port through the control port of the switch 531, so that the first modem 541 or the second modem 542 controls the first tuning circuit 511.

[0385] And in Fig.42 In the electronic device 100 shown, Fig.41 A switch 542 is provided on the basis of the electronic device 100 shown. The second modem 542 can electrically connect the connection port of the switch 532 to the first switching port or the second switching port through the control port of the switch 532, so that the first modem 541 or the second modem 542 controls the second tuning circuit 521.

[0386] Therefore, in Fig.42 In the electronic device 100 shown, the first modem 541 or the second modem 542 can control the first tuning circuit 511 and the second tuning circuit 521 simultaneously.

[0387] When the first antenna 510 and the second antenna 520 work at the same time, the first modem 541 controls the switch 531 through the first port so that the connection port of the switch 531 is electrically connected to the first switching port, and the second modem 542 controls the switch 532 through the fourth port so that the connection port of the switch 532 is electrically connected to the second switching port. The first modem 541 can control the first tuning circuit 511 to make the first antenna 510 work in the corresponding working frequency band. The second modem 542 can control the second tuning circuit 521 to make the second antenna 520 work in the corresponding working frequency band.

[0388] When the first antenna 510 is not working and the second antenna 520 is working, the first modem 541 controls the switch 531 through the first port to electrically connect the connection port of the switch 531 to the second switching port, and the second modem 542 controls the switch 532 through the fourth port to electrically connect the connection port of the switch 532 to the second switching port. The second modem 542 can simultaneously control the first tuning circuit 511 and the second tuning circuit 521, so that the radiator of the first antenna 510 acts as a parasitic branch of the second antenna 520, which can be used to improve the radiation performance (for example, radiation efficiency) of the second antenna 520.

[0389] At the same time, when the first antenna 510 is used as a parasitic branch of the second antenna 520, when the first antenna 510 needs to monitor, the first modem 541 controls the switch 531 through the first port so that the connection port of the switch 531 is electrically connected to the first switching port, and the first modem 541 controls the first tuning circuit 511 so that the first antenna 510 monitors in the corresponding working frequency band. After the monitoring is completed, the first modem 541 controls the switch 531 through the first port so that the connection port of the switch 531 is electrically connected to the second switching port, so that the radiator of the first antenna 510 is used as a parasitic branch of the second antenna 520.

[0390] When the first antenna 510 is working and the second antenna 520 is not working, the first modem 541 controls the switch 531 through the first port to electrically connect the connection port of the switch 531 to the first switching port, and the second modem 542 controls the switch 532 through the fourth port to electrically connect the connection port of the switch 532 to the first switching port. The first modem 541 can simultaneously control the first tuning circuit 511 and the second tuning circuit 521, so that the radiator of the second antenna 520 acts as a parasitic branch of the first antenna 510, which can be used to improve the radiation performance (for example, radiation efficiency) of the first antenna 510.

[0391] At the same time, when the second antenna 520 is used as a parasitic branch of the first antenna 510, when the second antenna 520 needs to perform interception, the second modem 542 controls the switch 532 through the fourth port to electrically connect the connection port of the switch 532 with the second switching port, and the second modem 542 controls the second tuning circuit 521 to enable the second antenna 520 to perform interception in the corresponding working frequency band. After the interception is completed, the second modem 542 controls the switch 532 through the fourth port to electrically connect the connection port of the switch 532 with the first switching port, so that the radiator of the second antenna 520 serves as a parasitic branch of the first antenna 510.

[0392] Fig.42 The electronic device 100 is shown with Fig.41 Similar parts of the electronic device 100 shown are not described one by one. For example, when the electronic device 100 is in different communication states, the antenna in the idle state (not working) can improve the radiation performance of the antenna in work; the working frequency band of the first antenna 510; the working frequency band of the second antenna 520; the electronic device 100 includes AP540 and a controller 530, etc.

[0393] Fig.43 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0394] like Fig.43 As shown, the electronic device 100 may include a first antenna, a second antenna 520 , a first modem 541 , and a second modem 542 .

[0395] The first antenna 510 includes a first tuning circuit 511. In one embodiment, the first tuning circuit 511 can be coupled between the radiator of the first antenna 510 and the floor. The first tuning circuit 511 can be used to switch the resonance point frequency of the resonance generated by the first antenna 510, so that the first antenna 510 works in different communication frequency bands.

[0396] The second antenna 520 includes a second tuning circuit 521. The second tuning circuit 521 can be coupled between the radiator of the second antenna 520 and the floor. The second tuning circuit 521 can be used to switch the resonance point frequency of the resonance generated by the second antenna 520, so that the second antenna 520 works in different communication frequency bands.

[0397] In one embodiment, the first modem 541 may be used to process an electrical signal transmitted or received by the first antenna 510. In one embodiment, the second modem 542 may be used to process an electrical signal transmitted or received by the second antenna 520.

[0398] The first port of the first modem 541 is electrically connected to the first port of the second modem 542 .

[0399] The second port of the second modem 542 is electrically connected to the first tuning circuit 511 . The third port of the second modem 542 is electrically connected to the second tuning circuit 521 .

[0400] It should be understood that according to the technical solution provided in the embodiment of the present application, when the electronic device 100 is in different communication states, the antenna in the idle state (not working) of the first antenna 510 and the second antenna 520 can improve the radiation performance (for example, radiation efficiency) of the working antenna, thereby enabling the electronic device 100 to have better communication quality.

[0401] It should be understood that Fig.43 The electronic device 100 is shown with Fig.41 The electronic device 100 shown is different only in that the switch 531 is not provided.

[0402] exist Fig.41 In the electronic device 100 shown, the first modem 541 can electrically connect the connection port of the switch 531 to the first switching port or the second switching port through the control port of the switch 531, so that the first modem 541 or the second modem 542 controls the first tuning circuit 511.

[0403] And in Fig.43 In the electronic device 100 shown, the switch 531 is not provided, and the first tuning circuit 511 and the second tuning circuit 521 are controlled by the second modem 542 .

[0404] When the first antenna 510 and the second antenna 520 work simultaneously, the second modem 542 can control the first tuning circuit 511 and the second tuning circuit 521 to make the first antenna 510 and the second antenna 520 work in corresponding working frequency bands.

[0405] When the first antenna 510 is not working and the second antenna 520 is working, the second modem 542 can control the first tuning circuit 511 and the second tuning circuit 521 to make the second antenna 520 work in the corresponding working frequency band, and the radiator of the first antenna 510 serves as a parasitic branch of the second antenna 520, which can be used to improve the radiation performance (for example, radiation efficiency) of the second antenna 520.

[0406] At the same time, when the first antenna 510 is used as a parasitic branch of the second antenna 520, when the first antenna 510 needs to perform interception, the first modem 541 sends an electrical signal to the second modem 542. The electrical signal is used to instruct the first antenna 510 to perform interception and the first tuning circuit 511 needs to be switched. The second modem 542 controls the first tuning circuit 511 to make the first antenna 510 perform interception in the corresponding working frequency band. After the interception is completed, the second modem 542 controls the first tuning circuit 511 to make the radiator of the first antenna 510 serve as a parasitic branch of the second antenna 520.

[0407] When the first antenna 510 is working and the second antenna 520 is not working, the second modem 542 can control the first tuning circuit 511 and the second tuning circuit 521 to make the first antenna 510 work in the corresponding working frequency band, and the radiator of the second antenna 520 serves as a parasitic branch of the first antenna 510, which can be used to improve the radiation performance (for example, radiation efficiency) of the first antenna 510.

[0408] At the same time, when the second antenna 520 is used as a parasitic branch of the first antenna 510, when the second antenna 520 needs to perform monitoring, the second modem 542 controls the second tuning circuit 521 to make the second antenna 520 perform monitoring in the corresponding working frequency band. After the monitoring is completed, the second modem 542 controls the second tuning circuit 521 to make the radiator of the second antenna 520 act as a parasitic branch of the first antenna 510.

[0409] Fig.43 The electronic device 100 is shown with Fig.41 Similar parts of the electronic device 100 shown are not described one by one. For example, when the electronic device 100 is in different communication states, the antenna in the idle state (not working) can improve the radiation performance of the antenna in work; the working frequency band of the first antenna 510; the working frequency band of the second antenna 520; the electronic device 100 includes AP540 and a controller 530, etc.

[0410] Fig.44 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0411] For the sake of simplicity, in the above embodiments, only the tuning circuit is connected in series in the circuit (for example, Fig.43 As shown, the first tuning circuit 511 is connected in series with the first antenna 510 and the second modem 542 for illustration. In actual production or application, the tuning circuit can also be connected in parallel in the circuit. Fig.44 As shown, the first end of the first tuning circuit 511 is electrically connected between the first antenna 510 and the second modem 542, and the first end of the first tuning circuit 511 is electrically connected to the floor.

[0412] It should be understood that the embodiments of the present application do not limit the specific connection method of the tuning circuit, which can be selected based on factors such as the layout within the electronic device.

[0413] Meanwhile, in the above embodiments, the tuning circuit is described by taking a single pole double throw (SPDT) switch as an example. In actual production or application, a single pole x throw (SPXT) or multi-pole x throw (XPXT) switch may also be included. Alternatively, the tuning circuit may include multiple switches, which are formed by cascading multiple switches. Fig.44 As shown, the second tuning circuit may include two SPDT switches.

[0414] It should be understood that the embodiments of the present application do not limit the specific form of the tuning circuit, which can be selected based on factors such as the layout within the electronic device.

[0415] Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present application.

[0416] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0417] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical or other forms.

[0418] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: include: floor; a frame, at least a portion of which is spaced apart from the floor, the frame comprising a first position, a second position, a third position and a fourth position which are sequentially arranged, the second position and the third position being located at a first side of the frame; A first antenna, wherein the working frequency band of the first antenna includes a first frequency band, and the first antenna includes: a first radiator, the first radiator comprising a conductive portion of the frame between the first position and the second position; A second antenna, wherein the working frequency band of the second antenna includes a second frequency band and a third frequency band, and the second antenna includes: a second radiator, the second radiator comprising a conductive portion of the frame between the third position and the fourth position; a first tuning circuit, wherein the second radiator comprises a first connection point, and the first tuning circuit is coupled and connected between the first connection point and the floor; Wherein, the first frequency band and the second frequency band are the same or adjacent; Based on the first antenna operating in the first frequency band, the first tuning circuit switches the operating frequency band of the second antenna from the second frequency band to the third frequency band.

2. The electronic device according to claim 1, characterized in that: The frame is coupled to the floor at the first position, the third position and the fourth position, and the frame has a first gap at the second position; The second radiator defines a second gap between the third position and the fourth position.

3. The electronic device according to claim 2, characterized in that: The length of the border between the second position and the third position is less than or equal to a first wavelength, and the first wavelength is a wavelength corresponding to the first frequency band.

4. The electronic device according to claim 2 or 3, characterized in that: The length of the frame between the second position and the third position is less than or equal to 90 mm.

5. The electronic device according to claim 1, characterized in that: The second position and the third position coincide with each other; The frame is coupled to the floor at a first position, and the frame is provided with a first gap and a second gap at the second position and the fourth position; The first end of the first radiator and the first end of the second radiator are opposite to each other through the first gap and do not contact each other. The first end of the first radiator is an open end, and the first end of the second radiator is a ground end.

6. The electronic device according to any one of claims 1 to 5, characterized in that: The electronic device also includes a first modem, a second modem, and a second tuning circuit; Wherein, the first radiator comprises a second connection point, and the second tuning circuit is connected between the second connection point and the floor; The first modem is electrically connected to the first tuning circuit, and the first modem is used to control the first tuning circuit to switch the working frequency band of the second antenna; The second modem is electrically connected to the second tuning circuit, and the second modem is used to control the second tuning circuit to switch the working frequency band of the first antenna; The first frequency band includes part of the communication frequency band in a non-cellular network, and the second frequency band includes part of the communication frequency band in a cellular network.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The electronic device also includes an application processor AP and a first modem; The AP is electrically connected to the first modem; The first modem is electrically connected to the first tuning circuit; The second antenna switches the working frequency band from the second frequency band to the third frequency band by the first tuning circuit, comprising: The AP sends switching information to the first modem; The first modem controls the first tuning circuit to switch the working frequency band of the second antenna from the second frequency band to the third frequency band according to the switching information.

8. The electronic device according to claim 6, characterized in that: The first frequency band is a 2.4G frequency band in WiFi, and the second frequency band is B40 or B41 in the cellular network, or the first frequency band is an L1 frequency band in GPS, and the second frequency band is B3 in the cellular network; Based on the electronic device enabling the first frequency band, the working frequency band of the second antenna is switched from the second frequency band to the third frequency band.

9. An electronic device, characterized in that: include: floor; a frame, at least a portion of which is spaced apart from the floor, the frame comprising a first position, a second position and a third position which are sequentially arranged, and the frame is coupled to the floor at the second position; A first antenna, wherein the working frequency band of the first antenna includes a first frequency band, and the first antenna includes: a first radiator, the first radiator comprising a conductive portion of the frame between the first position and the second position; A second antenna, wherein the working frequency band of the second antenna includes a second frequency band and a third frequency band, and the second antenna includes: a second radiator, the second radiator comprising a conductive portion of the frame between the second position and the third position; A tuning circuit, wherein the second radiator comprises a connection point, and the tuning circuit is coupled and connected between the connection point and the floor; wherein the first frequency band and the second frequency band are the same or adjacent; Based on the first antenna operating in the first frequency band, the tuning circuit switches the operating frequency band of the second antenna from the third frequency band to the second frequency band.

10. The electronic device according to claim 9, characterized in that: The frame is coupled to the floor at the first position, and the frame has a first gap at the third position; The first radiator defines a second gap between the first position and the second position.

11. The electronic device according to claim 9 or 10, characterized in that: The first frequency band and the second frequency band are communication frequency bands within the range of 698 MHz-960 MHz, or within the range of 1710 MHz-2170 MHz, or within the range of 2300 MHz-2690 MHz.

12. The electronic device according to any one of claims 9 to 11, characterized in that: The electronic device further comprises a modem, the modem being electrically connected to the tuning circuit; The second antenna switches the working frequency band from the third frequency band to the second frequency band by the tuning circuit, comprising: The modem controls the tuning circuit to switch the working frequency band of the second antenna from the third frequency band to the second frequency band.

13. An electronic device, characterized in that: include: a first antenna including a first tuning circuit; a second antenna including a second tuning circuit; a first switch, wherein a connection port of the first switch is electrically connected to the first tuning circuit; a first modem, wherein a first port of the first modem is electrically connected to a control port of the first switch, and a second port of the first modem is electrically connected to a first switching port of the first switch; A second modem, wherein a first port of the second modem is electrically connected to the second switch port of the first switch, and a second port of the second modem is electrically connected to the second tuning circuit.

14. The electronic device according to claim 13, characterized in that: The control port of the first switch is used to switch the electrical connection state between the connection port of the first switch and the first switching port of the first switch, or to control the electrical connection state between the connection port of the first switch and the second switching port of the first switch.

15. The electronic device according to claim 12 or 13, characterized in that: The electronic device further comprises a second switch; The connection port of the second switch is electrically connected to the second tuning circuit, the first switching port of the second switch is electrically connected to the third port of the first modem, the second switching port of the second switch is electrically connected to the second port of the second modem, and the third port of the second modem is electrically connected to the control port of the second switch.

16. The electronic device according to any one of claims 13 to 15, characterized in that: The working frequency band of the first antenna includes part of the communication frequency band in the non-cellular network, and the working frequency band of the second antenna includes part of the communication frequency band in the cellular network.

17. The electronic device according to claim 16, characterized in that: The electronic device also includes an application processor AP and a controller; The first port of the AP is electrically connected to the first port of the controller, and the second port of the AP is electrically connected to the fourth port of the first modem; The second port of the controller is electrically connected to the fourth port of the second modem.

18. The electronic device according to any one of claims 13 to 17, characterized in that: The working frequency band of the first antenna is the 2.4G frequency band of WiFi or the L1 frequency band of GPS, and the working frequency band of the second antenna is a communication frequency band within the range of 1710MHz-2170MHz, or a communication frequency band within the range of 2300MHz-2690MHz.

19. An electronic device, characterized in that: include: a first antenna including a first tuning circuit; a second antenna including a second tuning circuit; A first modem and a second modem, wherein a first port of the first modem is electrically connected to a first port of the second modem, a second port of the second modem is electrically connected to the first tuning circuit, and a third port of the second modem is electrically connected to the second tuning circuit.

20. The electronic device according to claim 19, characterized in that The working frequency band of the first antenna includes part of the communication frequency band in the non-cellular network, and the working frequency band of the second antenna includes part of the communication frequency band in the cellular network.

21. The electronic device according to claim 20, characterized in that: The electronic device also includes an application processor AP and a controller; The first port of the AP is electrically connected to the first port of the controller, and the second port of the AP is electrically connected to the fourth port of the first modem; The second port of the controller is electrically connected to the fourth port of the second modem.

22. The electronic device according to any one of claims 19 to 21, characterized in that: The working frequency band of the first antenna is the 2.4G frequency band of WiFi or the L1 frequency band of GPS, and the working frequency band of the second antenna is a communication frequency band within the range of 1710MHz-2170MHz, or a communication frequency band within the range of 2300MHz-2690MHz.

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