Electronic device and antenna switching method

Abstract

The present application provides an electronic device and an antenna switching method. The electronic device comprises a first antenna, a second antenna, and a controller. When the electronic device is in different communication states, the controller can configure some radiators as parasitic branches on the basis of the different communication states, improving the communication performance of the electronic device.

Description

Electronic device and antenna switching method

[0001] This application claims priority to the Chinese patent application with application number 202310802738.9 filed with the State Intellectual Property Office of China on June 30, 2023, the Chinese patent application with invention name “An electronic device and method for antenna switching”, and the Chinese patent application with application number 202311615641.3 filed with the China Patent Office on November 28, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] As demand for high-speed data transmission increases, the industrial design (ID) trend of electronic devices is toward larger screens and multiple cameras. This significantly reduces antenna clearance, limiting layout space.

[0004] Currently, electronic devices operate in frequency bands encompassing the third-generation wireless systems (3G), fourth-generation wireless systems (4G), and fifth-generation wireless systems (5G). Improving the communication quality of electronic devices within existing antenna layouts is a pressing issue.

[0005] Summary of the Invention

[0006] An 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 the different communication states to improve the communication performance of the electronic device.

[0007] In a first aspect, an electronic device is provided, comprising: a floor; a frame, at least a portion of the frame being 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 on a first side of the frame; a first antenna, wherein an operating frequency band of the first antenna comprises 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, wherein an operating frequency band of the second antenna comprises 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 its operating frequency band from the second frequency band to the third frequency band by the first tuning circuit.

[0008] According to an embodiment of the present application, when the first antenna operates in the first frequency band and the second antenna operates in the second frequency band, because the first and second frequency bands are the same or adjacent, and the second and third positions are located on the first side of the frame, the second antenna significantly interferes with the first antenna, deteriorating the radiation characteristics (e.g., radiation efficiency) of the first antenna. However, when the first antenna operates in the first frequency band and the second antenna operates in the third frequency band, the second antenna does not interfere with the first antenna, thereby improving the radiation characteristics of the first antenna.

[0009] 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, and the frame has a first gap at the second position; the second radiator has a second gap between the third position and the fourth position.

[0010] According to an embodiment of the present application, the first end of the first radiator is grounded (the end at the first position), and the second end is open (the end at the second position). The first and second ends of the second radiator are both grounded. The structures of the first and second antennas can be determined based on actual production or design, and this application does not impose any restrictions on this.

[0011] 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.

[0012] 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.

[0013] According to an embodiment of the present application, when the second position and the third position are within the above-mentioned range, the first antenna and the second antenna have strong interference in the same or adjacent frequency bands. In conjunction with the first aspect, in certain 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 defines 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.

[0014] 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 the non-cellular network, and the second frequency band includes part of the communication frequency band in the cellular network.

[0015] 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.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the electronic device further 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 operating 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 according to the switching information to switch the operating frequency band of the second antenna from the second frequency band to the third frequency band.

[0017] 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.

[0018] 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.

[0019] In a second aspect, an electronic device is provided, comprising: a floor; a frame, at least a portion of the frame being spaced apart from the floor, the frame comprising a first position, a second position, and a third position arranged in sequence, the frame being coupled to the floor at the second position; a first antenna, the operating 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 operating 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 second position and the third position; a tuning circuit, the second radiator comprising a connection point, the tuning circuit being 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.

[0020] 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).

[0021] In combination with the second aspect, in some implementations of the second aspect, 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 has a second gap between the first position and the second position.

[0022] 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 698MHz-960MHz, or, communication frequency bands within the range of 1710MHz-2170MHz, or, communication frequency bands within the range of 2300MHz-2690MHz.

[0023] In combination with the second aspect, in certain implementations of the second aspect, the electronic device further 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.

[0024] 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.

[0025] 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.

[0026] In combination with the third aspect, in certain implementations of the third aspect, the electronic device further 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.

[0027] 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.

[0028] In combination with the third aspect, in certain implementations of the third aspect, the electronic device further 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.

[0029] 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 in the range of 1710MHz-2170MHz, or a communication frequency band in the range of 2300MHz-2690MHz.

[0030] In a fourth aspect, an electronic device is provided, comprising: a first antenna including a first tuning circuit; a second antenna including a second tuning circuit; a first modem and a second modem, wherein the first port of the first modem is electrically connected to the first port of the second modem, the second port of the second modem is electrically connected to the first tuning circuit, and the third port of the second modem is electrically connected to the second tuning circuit.

[0031] 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.

[0032] In combination with the fourth aspect, in certain implementations of the fourth aspect, the electronic device further 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.

[0033] 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 in the range of 1710MHz-2170MHz, or a communication frequency band in the range of 2300MHz-2690MHz. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a schematic structural diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0035] FIG2 is a schematic structural diagram of the foldable electronic device 100 in an outwardly folded state.

[0036] FIG3 is a schematic structural diagram of the foldable electronic device 100 in a possible unfolded state.

[0037] FIG4 is a schematic structural diagram of the foldable electronic device 100 in a possible folded state.

[0038] FIG5 is a schematic structural diagram of the foldable electronic device 100 in a possible partially unfolded state.

[0039] FIG6 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0040] FIG7 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0041] FIG. 8 is an S-parameter simulation result of the first antenna and the second antenna in the electronic device shown in FIG. 6 .

[0042] FIG. 9 is an S-parameter simulation result of the second antenna in the electronic device shown in FIG. 6 when the first radiator serves as a parasitic stub.

[0043] FIG. 10 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in FIG. 6 .

[0044] FIG11 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0045] FIG. 12 is an S-parameter simulation result of the first antenna and the second antenna in the electronic device shown in FIG. 11 .

[0046] FIG. 13 is an S-parameter simulation result of the second antenna in the electronic device shown in FIG. 11 when the first radiator serves as a parasitic stub.

[0047] FIG. 14 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in FIG. 11 .

[0048] FIG15 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0049] FIG16 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0050] FIG17 shows S-parameter simulation results of the second antenna and the third antenna when the first radiator in the electronic device shown in FIG11 serves as a parasitic stub.

[0051] FIG. 18 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in FIG. 11 .

[0052] FIG19 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0053] FIG. 20 is an S-parameter simulation result of the second antenna when the first radiator in the electronic device shown in FIG. 19 serves as a parasitic stub.

[0054] FIG21 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in FIG19 when the first radiator serves as a parasitic stub.

[0055] FIG22 is an S-parameter simulation result of the first antenna in the electronic device shown in FIG19 when the second radiator acts as a parasitic stub.

[0056] FIG23 shows the system efficiency and radiation efficiency of the first antenna when the second radiator in the electronic device shown in FIG19 serves as a parasitic stub.

[0057] FIG24 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0058] FIG. 25 is an S-parameter simulation result of the second antenna in the electronic device shown in FIG. 24 when the first radiator serves as a parasitic stub.

[0059] FIG26 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in FIG24 when the first radiator serves as a parasitic stub.

[0060] FIG. 27 is an S-parameter simulation result of the first antenna when the second radiator in the electronic device shown in FIG. 24 serves as a parasitic stub.

[0061] FIG28 shows the system efficiency and radiation efficiency of the first antenna when the second radiator in the electronic device shown in FIG24 serves as a parasitic stub.

[0062] FIG29 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0063] FIG30 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in FIG29.

[0064] FIG31 shows the system efficiency and radiation efficiency of the third antenna in the electronic device shown in FIG29.

[0065] FIG32 is a schematic diagram of an antenna switching method 400 provided in an embodiment of the present application.

[0066] FIG33 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0067] FIG34 is an S-parameter simulation result of the first antenna and the second antenna shown in FIG33 .

[0068] FIG. 35 is a simulation result of the radiation efficiency of the first antenna shown in FIG. 33 .

[0069] FIG36 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0070] FIG37 is a simulation result of the radiation efficiency of the first antenna shown in FIG36.

[0071] FIG38 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0072] FIG39 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0073] FIG40 is a simulation result of the radiation efficiency of the first antenna shown in FIG38.

[0074] FIG41 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0075] FIG42 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0076] FIG43 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0077] FIG44 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0078] The following explains the terms that may appear in the embodiments of the present application.

[0079] It should be understood that the term "and / or" as used herein is simply a term used to describe the existence of three possible relationships between related objects. For example, "A and / or B" can represent the existence of A alone, the existence of both A and B, and the existence of B alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0080] When used in this application, "within the range of...", unless it is specifically stated that the end value is not included, it is assumed that both end values ​​of the range are included. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0081] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be referred to as capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gap between two conductive parts.

[0082] Component / device: includes at least one of lumped component / device and distributed component / device.

[0083] Lumped component / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For a signal, the component's characteristics remain constant at all times, regardless of frequency.

[0084] 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.

[0085] Capacitance: This can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0086] Inductance: This can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive material.

[0087] Radiator: A device in an antenna used to receive / send electromagnetic wave radiation. In some cases, the narrow meaning of "antenna" is the radiator, which converts the guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, used to radiate and receive radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, where it is converted into a certain polarized electromagnetic wave energy and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a certain polarization from a specific direction in space into modulated high-frequency current energy and transmits it to the receiver input via the feeder line.

[0088] The radiator may include a conductor with a specific shape and size, such as a linear or sheet shape, etc., and the present application does not limit the specific shape. In one embodiment, the linear radiator can be simply referred to as a linear antenna. In one embodiment, the linear radiator can be implemented by a conductive frame, and can also be called a frame antenna. In one embodiment, the linear radiator can be implemented by a bracket conductor, and can also be called a bracket antenna. In one embodiment, the wire diameter (for example, including thickness and width) of the linear radiator, or the radiator of the linear antenna is much smaller than the wavelength (for example, the wavelength of the medium) (for example, less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (for example, the wavelength of the medium) (for example, the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave oscillator antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna typically includes two radiating branches, and each branch is fed by a feeding portion from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted-F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA, Planar Inverted F Antenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes circular, rectangular, annular, etc., and the present application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0089] The radiator may also include a slot or slot formed in a conductor, for example, a closed or semi-closed slot or slot formed in a grounded conductor surface. In one embodiment, a slotted or slotted radiator may be referred to as a slot antenna or slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slot of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slot may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slot (e.g., a closed slot or slot with an additional opening) may be referred to as an open slot antenna. In some embodiments, the slot is elongated. In some embodiments, the slot is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the slot is approximately an integer multiple of the wavelength (e.g., one wavelength). In some embodiments, the slot can be fed with a transmission line spanning one or both sides, thereby exciting a radio frequency electromagnetic field in the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a conductive frame with both ends grounded, also known as a frame antenna. In this embodiment, the slot antenna or slot antenna can be considered to include a linear radiator spaced from the floor and grounded at both ends, thereby forming a closed or semi-enclosed slot or slot. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a bracket conductor with both ends grounded, also known as a bracket antenna.

[0090] 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 the 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 the baseband circuit, and the baseband circuit is used to transmit baseband signals (digital signals), which can be converted into radio frequency signals by electronic components in the feed circuit (for example, RF IC). In one embodiment, the baseband circuit may include a modem, which can be used to up-convert or down-convert the baseband signal. In one embodiment, part of the radio frequency front-end circuit and part of the baseband circuit can be arranged in one chip, or respectively arranged in the radio frequency front-end chip and the baseband chip.

[0091] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of an antenna radiator should not be narrowly understood as an end point or end portion that is physically disconnected from other radiators. It can also be considered as a point or section on a continuous radiator. In one embodiment, an "end / point" may include a connection / coupling area on an antenna radiator that is coupled to other conductive structures. For example, a feeding end / feeding point may be a coupling area on an antenna radiator that is coupled to a feeding structure or feeding circuit (for example, an area facing a portion of the feeding circuit). For another example, a grounding end / grounding point may be a connection / coupling area on an antenna radiator that is coupled to a grounding structure or grounding circuit.

[0092] Open end, closed end: In some embodiments, the open end / grounded end refers to whether it is grounded, for example, with the closed end being grounded and the open end not being grounded. In some embodiments, the open end / closed end refers to other electrical conductors, for example, with the closed end being electrically connected to the other electrical conductors and the open end not being electrically connected to the other electrical conductors. In one embodiment, the open end may also be referred to as a free end, an open end, or an open-circuit end. In one embodiment, the closed end may also be referred to as a grounded end or a short-circuit end. It should be understood that in some embodiments, other electrical conductors may be coupled to each other via the open end to transfer coupling energy (which may be understood as transferring current).

[0093] Resonance / resonance frequency: The resonant frequency is also called the resonance frequency. The resonant frequency may refer to the frequency at which the imaginary part of the antenna input impedance is zero. The resonant 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 in the "first resonance generated by the antenna / radiator" mentioned in this application should be the fundamental mode resonance generated by the antenna / radiator, or the lowest frequency resonance generated by the antenna / radiator.

[0094] Resonance frequency band / communication frequency band / operating frequency band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna that supports the B40 frequency band operates between 2300MHz and 2400MHz, or in other words, the antenna's operating frequency band includes the B40 frequency band. The frequency range that meets the required specifications can be considered the antenna's operating frequency band.

[0095] Electrical length: It can refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

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

[0097] Wavelength: Or operating wavelength, this can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, if the center frequency of the B1 uplink frequency band (resonant frequency 1920MHz to 1980MHz) is 1955MHz, the operating wavelength can be the wavelength calculated using 1955MHz. "Operating wavelength" is not limited to the center frequency; it can also refer to the wavelength corresponding to a non-center frequency of the resonant frequency or operating frequency band.

[0098] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×10 8 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Wherein, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" can also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

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

[0101] Those skilled in the art will understand that efficiency is generally expressed as a percentage, which has a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0102] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port by the antenna circuit to the antenna port's transmitted power. The smaller the reflected signal, the larger the signal radiated from the antenna into space, and the greater the antenna's radiation efficiency. The larger the reflected signal, the smaller the signal radiated from the antenna into space, and the lower the antenna's radiation efficiency.

[0103] Antenna return loss can be expressed using the S11 parameter, a type of S parameter. S11 represents the reflection coefficient and characterizes the antenna's transmission efficiency. The S11 parameter is typically negative. A smaller S11 parameter indicates lower antenna return loss and less energy reflected back from the antenna itself, meaning more energy actually enters the antenna and higher system efficiency. A larger S11 parameter indicates greater antenna return loss and lower system efficiency.

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

[0105] It should be understood that, in the embodiments of the present application, the first frequency band and the second frequency band being the same (also referred to as co-frequency) can be understood as any 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 the sub-6GHz frequency band in 5G, and the first frequency band and the second frequency band can be considered to be the same frequency.

[0107] The first frequency band and the second frequency band have at least partial frequency overlap. 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, in the embodiments of the present application, the first frequency band and the second frequency band being adjacent can be understood as:

[0109] In the first and second frequency bands, the spacing between the starting frequency of the higher frequency band and the ending frequency 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 200 MHz). For example, if the first frequency band includes B3 (1.71-1.785 GHz) in LTE and the second frequency band includes L1 (1578.42±1.023 MHz) in GPS, and B3 (1.71-1.785 GHz) and L1 (1578.42±1.023 MHz) are adjacent frequency bands, then the first and second frequency bands can be considered 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 generally refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "Ground" can be used for grounding components in an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board of an electronic device, or it can be the grounding plate formed by the middle frame of the electronic device, or the grounding metal layer formed by the metal film under the screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as fiberglass, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, touch screen, input buttons, transmitter, processor, memory, battery, charging circuit, and system-on-chip (SoC) structures can be mounted on or connected to a circuit board, or electrically connected to a trace layer and / or ground layer in the circuit board. For example, a radio frequency source can be located on a trace layer.

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

[0112] Grounding refers to coupling to the ground / floor in any manner. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding at a specific location on the frame using a portion of the midframe's structural components (or referred to as a physical ground). In one embodiment, grounding can be achieved through device grounding, such as through a series or parallel connection of a capacitor, inductor, or resistor (or referred to as a device ground).

[0113] The technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings.

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

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

[0116] FIG1 is filled with a dot matrix pattern to schematically represent a flexible display screen 110. The flexible display screen 110 can have the characteristics of strong flexibility and bendability, and can provide users with a new interaction method based on the bendable characteristics. The display panel of the flexible display screen 110 can, for example, adopt any one of a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a quantum dot light-emitting diode (QLED), etc., and the embodiments of the present application are not limited to this.

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

[0119] The second frame 123 can surround the outer periphery of the second cover 124, and at least a portion of the second frame 123 can also surround the outer periphery of the second display portion 112. The second display portion 112 can be arranged parallel to the second cover 124 and spaced apart from the second frame 123. The second display portion 112 and the second cover 124 can be located on either side of the second frame 123. The space between the second display portion 112 and the second cover 124 can be used to accommodate components of the foldable electronic device 100, such as antennas and circuit board components.

[0120] In one embodiment provided herein, the cover and the frame may be two parts of the housing of the foldable electronic device 100. The cover and the frame may be connected, and the form of the connection may not be an assembly method such as snap-on, gluing, welding, riveting, or clearance fit. The connection between the cover and the frame is usually difficult to separate. In another embodiment provided herein, the cover and the frame may be two different components. By assembling the cover and the frame together, the housing of the foldable electronic device 100 can be formed.

[0121] The frame can at least partially serve as an antenna radiator to transmit and receive radio frequency signals. A gap can exist between this portion of the frame serving as the radiator and the rest of the cover to ensure a good radiation environment for the antenna radiator. In one embodiment, the cover can be provided with a slit in this portion of the frame serving as the radiator to facilitate antenna radiation.

[0122] The frame 11 can be formed of a conductive material such as metal. The frame 11 can be provided 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, which is 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 provided on the inner surface of the frame 11 (or the conductive material on the inner surface) is arranged in contact with the non-conductive material of the frame 11 to facilitate antenna radiation, and both the conductive material and the non-conductive material should be regarded as part of the frame 11.

[0124] The antenna of electronic device 100 may also be disposed within the housing, such as a bracket antenna or millimeter-wave antenna (not shown in FIG1 ). The clearance for the antenna disposed within the housing can be provided by a slot / opening in any of the cover, frame, and / or display, or by a non-conductive gap / aperture formed between any of these. The antenna clearance ensures the antenna's radiation performance. It should be understood that the antenna clearance can be a non-conductive area formed by any conductive component within electronic device 100, through which the antenna radiates signals to the outside world. In one embodiment, the antenna can be based on a flexible printed circuit (FPC), a laser-direct-structuring (LDS) antenna, or a microstrip disk antenna (MDA). In one embodiment, the antenna can also be a transparent structure embedded within the display screen of electronic device 100, such that the antenna is a transparent antenna unit embedded within the display screen of electronic device 100.

[0125] The foldable electronic device 100 may also include a printed circuit board (PCB) (not shown). The PCB is located within the cavity formed by the cover. The PCB can be made of a flame-resistant material (FR-4), a Rogers dielectric, or a mixture of Rogers and FR-4. FR-4 is a designation for a flame-resistant material grade, and Rogers dielectric refers to a high-frequency board. The PCB 17 carries electronic components, such as radio frequency chips. In one embodiment, a metal layer may be provided on the PCB. This metal layer can be used to ground the electronic components carried on the PCB, as well as other components such as a bracket antenna or a frame antenna. This metal layer may be referred to as a floor, ground plane, or grounding layer. In one embodiment, the metal layer can be formed by etching metal onto the surface of any dielectric layer in the PCB. In one embodiment, the metal layer used for grounding can be provided on the side of the PCB proximal to the flexible display 110. In one embodiment, the edge of the PCB can be considered the edge of its grounding layer. The electronic device 100 may also have other floor / ground planes / grounding layers, as previously described and not further described here.

[0126] The hinge 125 can be connected between the first housing 126 and the second housing 127. The hinge 125 can move the first housing 126 and the second housing 127 closer to or farther from each other. Accordingly, the first display portion 111 of the flexible display 110 and the second display portion 112 of the flexible display 110 can move closer to or farther from each other, allowing the flexible display 110 to be folded or unfolded.

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

[0128] The foldable electronic device 100 shown in FIG1 is currently in an unfolded state. In the unfolded state, the angle between the first housing 126 and the second housing 127 can be approximately 180°. The flexible display 110 can be in the unfolded state as shown in FIG1 .

[0129] FIG2 illustrates a possible folded state of the foldable electronic device 100. FIG2 shows the foldable electronic device 100 in an outwardly folded state (the outwardly folded state may be referred to as the outwardly folded state). The outwardly folded state illustrated in FIG2 may be, for example, a left-right outwardly folded state or a top-bottom outwardly folded state. The following describes a possible folded state of the foldable electronic device 100 in conjunction with FIG1 and FIG2 .

[0130] In the embodiments of the present application, the foldable electronic device 100 being in a folded state may mean that the foldable electronic device 100 is currently bent and the degree of bending of the foldable electronic device 100 has reached its maximum. In this case, the first cover 122 and the second cover 124 may be approximately parallel, spaced apart from each other, and disposed face to face, with the spacing between the first cover 122 and the second cover 124 being minimized. At least portions of the first housing 126 and the second housing 127 are contained within the space enclosed by the flexible display 110. The first display portion 111, the first housing 126, the second housing 127, and the second display portion 112 are sequentially stacked. Similarly, the first display portion 111 and the second display portion 112 may be approximately parallel, spaced apart from each other, with the spacing between the first cover 122 and the second cover 124 being smaller than the spacing between the first display portion 111 and the second display portion 112. In this case, the first display portion 111 and the second display portion 112 may be considered to be located on different planes.

[0131] 1 and 2 , when the foldable electronic device 100 is in the outward folded state, the first cover 122 and the second cover 124 can be brought into close proximity, and the first display portion 111 and the second display portion 112 can be brought into close proximity. The first display portion 111, the second display portion 112, and the foldable display portion 113 can form a housing area for accommodating the first cover 122, the second cover 124, and the hinge 125. In other words, the first cover 122, the second cover 124, and the hinge 125 can be accommodated in the space between the first display portion 111 and the second display portion 112.

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

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

[0134] The foldable electronic device 100 may further include a third housing 128 and a hinge 129, as shown in FIG3 . The hinge 129 may be connected between the third housing 128 and the second housing 127 . The third housing 128 and the second housing 127 may be moved closer to or further away from each other. As the number of foldable portions of the foldable electronic device 100 increases, the space occupied by the foldable electronic device 100 may be further reduced in the folded state while maintaining the same screen size in the unfolded state.

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

[0136] 1. As shown in FIG3 , a possible unfolded state of the foldable electronic device 100 is shown. In the unfolded state, the angle between the first housing 126 , the second housing 127 , and the third housing 128 may be approximately 180°. The flexible display 110 may be in the unfolded state.

[0137] 2. Figure 4 shows a possible folded state (tri-folded state) of the foldable electronic device 100. In the folded state, the first housing 126 and the second housing 127 rotate along the rotation axis 125, and the second housing 127 and the third housing 128 rotate along the rotation axis 129, thereby achieving the maximum degree of curvature of the foldable electronic device 100. In this state, the first housing 126, the second housing 127, and the third housing 128 can be considered to be located on different planes.

[0138] 3. As shown in FIG5 , a possible partially unfolded state (two-folded state) of the foldable electronic device 100 is shown. In the partially unfolded state, the angle between the first shell 126 and the second shell 127 can be approximately 180°, and the second shell 127 and the third shell 128 rotate along the rotation axis 129, so that the third shell 128 approaches the second shell 127. In this case, the first shell 126 and the second shell 127 are considered to be located on the same plane, and the second shell 127 and the third shell 128 can be considered to be located on different planes. In another possible partially unfolded state, the angle between the third shell 128 and the second shell 127 can be approximately 180°, and the first shell 126 and the second shell 127 rotate along the rotation axis 125, so that the first shell 126 approaches the second shell 127.

[0139] FIG. 1 only schematically illustrates some components of the electronic device 100 , and the actual shapes, sizes, and structures of these components are not limited by FIG. 1 .

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

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

[0142] An 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 the different communication states to improve the communication performance of the electronic device.

[0143] FIG6 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

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

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

[0146] The first radiator 210 includes a first feed point 211. A first feed circuit 231 is coupled to the first feed point 211. The first feed circuit 231 includes a first switch 241, which can be used to switch the coupling state between the first feed circuit 231 and the first feed point 211. For example, in the structure shown in FIG6 , a first port of the first switch 241 is coupled to the first feed point 211, and no other electronic components are provided between the first switch 241 and the first feed point 211 (a second port of the first switch 241 is coupled to other electronic components in the first feed circuit 231). The first switch 241 can connect or disconnect the first feed circuit 231 from the first feed point 211.

[0147] It should be understood that in the embodiment of the present application, only the example of no other electronic components being provided 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 provided at any position in the first feeding circuit 231. The embodiment of the present application does not limit this. The switches provided 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 the switching state of the first switch 241 .

[0151] It should be understood that the technical solution provided in the embodiment of the present application is that 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, or 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 determines the switch state of the first switch 241 based on the first signal. The first signal is used to determine the operating state of the second antenna. For example, when the first signal indicates that the second antenna 202 is operating (the electronic device 100 communicates via the second antenna 202), the first radiator 210, acting as a parasitic branch of the second antenna 202, can be used to improve the radiation performance of the second antenna 202, thereby improving the communication quality of the electronic device 100.

[0154] It should be understood that the controller 230 determining the switching state of the first switch 241 according to the first signal can be understood as the controller 230 determining the on or off state of the first switch 241 according to the first signal and then instructing other electronic components to switch the switching state of the first switch 241 to the on or off state. For example, after determining the switching state of the first switch 241, the controller 230 can instruct a switcher (e.g., an RF IC in the feed circuit) to switch the first switch 241 to on or off. Alternatively, in one embodiment, the controller 230 determining the switching state of the first switch 241 according to the first signal can be understood as the controller 230 switching the first switch 241 to on or off according to the first signal without switching the first switch 241 through other electronic components. In the embodiments of the present application, the switching states determined by the controller 230 can be understood accordingly.

[0155] In one embodiment, when the first radiator 210 serves as a parasitic stub of the second antenna 202 , the controller 230 switches the first switch 241 from the first switching state to the second switching 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 a single-pole double throw (SPDT) or a single-pole multiple throw (SPXT) according to actual production or design selection. The embodiment of the present application does not limit this. It only needs to ensure that the number of second ports of the switch is greater than the number of electronic components or RF channels to be connected.

[0157] In one embodiment, the first antenna 201 may further include a second switch 242. A first port of the second switch 242 is coupled to the floor, and a second port of the second switch 242 is coupled to the first feed point 211. A second port of the controller 230 is electrically connected to a control port of the second switch 242 to control the on / off 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 feed 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 state of the at least one electronic component 251 with the first feed 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 .

[0159] In one embodiment, the controller 230 determines the switching 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 a 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 feed point 211. When the first radiator 210 acts as a parasitic stub of the second antenna 202 and generates a 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 feed point 211.

[0161] Furthermore, the switching states of all switches described in the embodiments of the present application are determined by the controller 230. The controller 230 can switch the switching state of the switch 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 simplicity of discussion, the above embodiments are described using the example of first switch 241 and second switch 242 being coupled to first radiator 210 at first feed point 211. In one embodiment, first radiator 210 includes a first connection point, and the second port of second switch 242 is coupled to the first connection point, where the first connection point and first feed 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) switch, the first switch 241 may include at least two first ports, which can simultaneously implement the functions of the first switch 241 and the second switch 242. One of the at least two first ports can be used to switch the coupling connection state with the first feeding circuit 231, and one of the at least two first ports can be used to switch the electronic component electrically connected to the floor, thereby matching 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 feed circuit 232 may include a third switch 243, which may be used to switch the coupling connection state between the second feed circuit 232 and the second feed point 221. For example, in the structure shown in FIG6 , a first port of the third switch 243 is coupled to the second feed point 221, and a second port of the third switch 243 is coupled to other electronic components in the second feed circuit 232. A third port of the controller 230 is electrically connected to a 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 determines the switch state of the third switch 243 based on the second signal. The second signal is used to determine the operating state of the first antenna. For example, when the first signal indicates that the first antenna 201 is operating (the electronic device 100 communicates via 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, thereby improving 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 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 feed point 221. A fourth port of the controller 230 is electrically connected to a control port of the fourth switch 244 to control the on / off 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 feed 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 the coupling state of the at least one electronic component 252 with the second feed point 221 or with 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, thereby coupling the electronic component 252 electrically connected between the first second port and the floor to the second feed 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, thereby coupling the electronic component 252 electrically connected between the second second port and the floor to the second feed point 221.

[0171] In one embodiment, the operating frequency band of the first antenna 201 may include at least some frequency bands in a cellular network, such as B1 (1920 MHz–1980 MHz), B3 (1710 MHz–1785 MHz), and B7 (2500 MHz–2570 MHz) 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 some frequency bands in a non-cellular network, such as 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 a portion of the frequency bands in a 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 a portion of the frequency bands in a 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, as shown in FIG7 . The first modem 261 is electrically connected to the first feeding circuit 231 . The first modem 261 can be used to process the electrical signals 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 signals 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 the frequency, or modulating the electrical signal received by the antenna, for example, down-converting the frequency.

[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 into the same chip.

[0177] It should be understood that the controller 230 and the first modem 261 are independently configured and connected via an interface. Switching of the switch by the controller 230 may cause timing disruptions in the transmitted electrical signals, requiring complex processing. However, when the controller 230 and the first modem 261 are integrated into 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 via circuitry, and switching of the switch by the controller 230 does not cause timing disruptions in the transmitted electrical signals.

[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 operating state of the second antenna. For example, the operating state of the second antenna can be understood as whether the electronic device is communicating through the second antenna.

[0180] In one embodiment, the electronic device 100 may further include a system on chip (SoC), which 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 operating status of the second antenna. In one embodiment, the third signal may include the operating 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. 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 of the first antenna and service information.

[0183] Figures 8 to 10 show simulation results for the antennas in the electronic device shown in Figure 6. Figure 8 shows the S-parameter simulation results for the first and second antennas in the electronic device shown in Figure 6. Figure 9 shows the S-parameter simulation results for the second antenna in the electronic device shown in Figure 6, when the first radiator acts as a parasitic stub. Figure 10 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in Figure 6.

[0184] It should be understood that for simplicity of discussion, in the electronic device shown in FIG6 , only the example in which the working frequency band of the first antenna includes the WiFi band and the working frequency band of the second antenna includes the GPS is used for description.

[0185] As shown in Figure 8, when the electronic device communicates simultaneously through the first antenna (S11) and the second antenna (S22) (both the first and second antennas are in operation), the first antenna resonates (first resonance) around 2.4 GHz, which may include the WiFi band. The second antenna resonates (second resonance) around 1.6 GHz, which may include the GPS band. Furthermore, the isolation (S12) between the first and second antennas 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] As shown in Figure 9, the second antenna can resonate near 1.6 GHz and 2 GHz. The resonance near 1.6 GHz is a second resonance generated by the second radiator, while the resonance near 2 GHz is a 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] As shown in FIG10 , in the GPS frequency band, compared to when the first radiator does not act as a parasitic branch, the system efficiency of the second antenna is improved by about 0.5 dB, and the radiation efficiency is improved by about 0.5 dB.

[0189] FIG11 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0190] As shown in FIG. 11 , 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 its extension direction. 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. The first frame 2710 defines 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 and second antennas are operating, the first port of the fifth switch 245 is electrically connected to the first connection point 222 directly or 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 operating and the second antenna is operating, 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 via 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. Simultaneously, the first switch 241 disconnects (disconnects) the first feed circuit 231 from the first feed point 211, and the first port of the second switch 242 is electrically connected to the electronic component 251 corresponding to the first radiator 210, which acts as a parasitic branch of the second antenna, thereby enabling the first radiator 210 to function as a parasitic branch of the second antenna and improving the radiation characteristics of the second antenna.

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

[0196] Figures 12 to 14 show simulation results for the antennas in the electronic device shown in Figure 11. Figure 12 shows the S-parameter simulation results for the first and second antennas in the electronic device shown in Figure 11. Figure 13 shows the S-parameter simulation results for the second antenna in the electronic device shown in Figure 11, when the first radiator acts as a parasitic stub. Figure 14 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in Figure 11.

[0197] It should be understood that for the sake of simplicity of discussion, in the electronic device shown in Figure 6, 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] As shown in Figure 12, when an electronic device communicates simultaneously through a first antenna (S11) and a second antenna (S22) (both antennas are active), the first antenna resonates near 2.6 GHz and 3.9 GHz, where its resonant frequency band may include at least the sub-6 GHz band. The second antenna resonates near 2.4 GHz, where its resonant frequency band may include the WiFi band. Furthermore, the isolation (S12) between the first and second antennas is less than -18 dB.

[0199] When the electronic device communicates only through the second antenna (the first antenna is inactive and the second antenna is active), the second antenna may resonate near 2.4 GHz or 2.6 GHz, as shown in FIG13 .

[0200] As shown in FIG14 , in the WiFi frequency band, compared to when the first radiator does not serve as a parasitic branch, the system efficiency of the second antenna is improved by approximately 0.8 dB and the radiation efficiency is improved by approximately 1 dB.

[0201] FIG15 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0202] As shown in FIG. 15 , the electronic device 100 may include a first housing 271 , a second housing 272 , and a first rotation 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 housing 271 includes a first frame 2710 , and the second housing 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 the conductive portion between the first position 281 and the second position 282. The second radiator 220 is the conductive portion between the third position 283 and the fourth position 284.

[0206] As shown in FIG. 16 , 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 a first position 281 and defines a first gap at a second position 282. In one embodiment, the second frame 2720 defines a second gap at a third position 283 and defines a fourth position 284 and defines a floor.

[0208] It should be understood that for the sake of simplicity, the embodiment of the present application only uses the example of the radiator in the first antenna 201 and the second antenna 202 having one end as an open end and the other end as a floor-coupled end, and operating 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 the 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, the embodiments of the present application are only described by taking the first antenna 201 as not working and the second antenna as working as an example. 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 improve 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. 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 the 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, electronic device 100 may further include fourth antenna 302. Fourth antenna 302 includes fourth radiator 320. Second frame 2720 includes seventh position 287, and third position 283 is located between fourth position 284 and seventh position 287. Third radiator 310 is a conductive portion between seventh position 287 and third position 283.

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

[0217] Figures 17 and 18 show simulation results for the antennas in the electronic device shown in Figure 16. Figure 17 shows the S-parameter simulation results for the second and third antennas in the electronic device shown in Figure 11, when the first radiator acts as a parasitic stub. Figure 18 shows the system efficiency and radiation efficiency of the second antenna in the electronic device shown in Figure 11.

[0218] It should be understood that for the sake of simplicity of discussion, in the electronic device shown in Figure 11, only 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 can include at least part of the medium frequency band (middle band, MB) (1710MHz-2170MHz), and the working frequency band of the fourth antenna includes the WiFi band.

[0219] As shown in Figure 17, when the electronic device communicates only through the second and third antennas (the first antenna is inactive, and the second and third antennas are active), the first radiator acts as a parasitic branch of the second antenna, enhancing the radiation characteristics of the second antenna. The second antenna (S22) resonates around 1 GHz and 1.6 GHz, which includes the GPS L1 band. The third antenna (S33) resonates around 1.8 GHz and 1.1 GHz, which includes the MB B3 band. When the first radiator acts as a parasitic branch, the isolation (S23) between the second and third antennas is less than -8 dB.

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

[0221] FIG19 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0222] It should be understood that the electronic device 100 shown in FIG19 differs from the electronic device 100 shown in FIG16 only in the lengths of the first radiator 210 and the second radiator 220. In the electronic device 100 shown in FIG16, 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 the following relationship: 1.5×L2≤L1≤2×L2. In the electronic device 100 shown in FIG19, 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) are substantially the same, satisfying the following relationship: 0.9×L2≤L1≤1.1×L2.

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

[0224] It should be understood that for simplicity of discussion, in the electronic device shown in FIG19 , only the example in which 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 is used for illustration.

[0225] As shown in FIG20 , when the electronic device communicates only through the second antenna (the first antenna is inoperative and the second antenna is operative), the first radiator, as a parasitic branch of the second antenna, generates parasitic resonance near 2 GHz.

[0226] As shown in Figure 21, 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] As shown in FIG22 , when the electronic device communicates only through the first antenna (the second antenna is inoperative and the first antenna is operative), the second radiator, as a parasitic branch of the first antenna, generates parasitic resonance near 1.68 GHz.

[0228] As shown in Figure 23, 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] FIG24 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0230] It should be understood that the electronic device 100 shown in FIG24 differs from the electronic device 100 shown in FIG16 only in the relative positions of the first radiator 210 and the second radiator 220. In the electronic device 100 shown in FIG16, the first radiator 210 and the second radiator 220 at least partially overlap along the first direction. In the electronic device 100 shown in FIG24, the first radiator 210 and the second radiator 220 do not overlap along the first direction, and the first slot at the second position 282 and the second slot at the third position 283 at least partially overlap along the first direction. When the radiator acts as a parasitic stub, energy can be coupled through the electric field at the slot, thereby generating a parasitic resonance.

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

[0232] It should be understood that for simplicity of discussion, in the electronic device shown in FIG28 , only the example in which the operating frequency band of the first antenna includes at least part of the frequency band in the MB and the operating frequency band of the second antenna includes the satellite frequency band is used for illustration.

[0233] As shown in FIG. 25 , when the electronic device communicates only through the second antenna (the first antenna is inoperative and the second antenna is operative), the first radiator, as a parasitic branch of the second antenna, generates parasitic resonance near 2.3 GHz.

[0234] As shown in Figure 26, 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] As shown in FIG27 , when the electronic device communicates only through the first antenna (the second antenna is inoperative and the first antenna is operative), the second radiator, as a parasitic branch of the first antenna, generates parasitic resonance near 1.85 GHz.

[0236] As shown in Figure 28, 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] FIG29 is a schematic diagram of a foldable electronic device 100 provided in an embodiment of the present application.

[0238] 29 , 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 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 the conductive portion between the first position 281 and the second position 282. The second radiator 220 is the 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 for illustration. In actual production or design, the technical solutions provided in the embodiments of this application can also be applied to devices including multiple housings (multi-fold electronic devices). As shown in Figure 25, only the foldable electronic device 100 including three housings is used for illustration.

[0242] For the sake of simplicity, in the electronic device 100 shown in Figure 25, only the part of the first radiator 210 including the first frame 2710 and the part of the second radiator 220 including the second frame 2720 are used as an example for explanation. In actual production or design, the first radiator 210 and the second radiator 220 can also be set at other positions. For example, the first radiator 210 includes the part 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 a first position 281 and defines a first gap at a second position 282. In one embodiment, the second frame 2720 defines a second gap at a third position 283 and defines a fourth position 284 and defines a floor.

[0244] As shown in Figure 25, when the electronic device 100 is in a folded state, the first gap and the second gap partially overlap along the first direction, and the first radiator 210 and the second radiator 220 do not overlap along the first direction. 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, 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: 0.5×L2≤L1≤L2.

[0247] In one embodiment, when the first radiator 210 operates in 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, electronic device 100 may further include a third antenna 301. Third antenna 301 includes a third radiator 310. Second frame 2720 includes a fifth position 285, and third position 283 is located between fourth position 284 and fifth position 285. Third radiator 310 is a conductive portion between third position 283 and fifth position 285.

[0249] In one embodiment, the second bezel 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, electronic device 100 may further include a fourth antenna 302. Fourth antenna 302 includes a fourth radiator 320. Second frame 2720 includes a sixth position 286 and a seventh position 287. Sixth position 286 is located between fourth position 284 and seventh position 287. Fourth position 284 is located between third position 283 and sixth position 286. Fourth radiator 320 is a conductive portion between sixth position 286 and 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 may include 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 the 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 serve 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 present embodiment, only the third frame 2740 having a slit at the ninth position 332 is used as an example for illustration. In actual production or design, the third frame 2740 can also be coupled to the floor at the ninth position 332.

[0260] In one embodiment, the third frame 2740 further 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 further 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 operates via the first antenna 201, the fifth radiator 341 can be used to improve the radiation characteristics (e.g., operating bandwidth) of the first antenna 201. When the electronic device 100 does not operate via the first antenna 201, the fifth radiator 341 can be used to improve the radiation characteristics (e.g., operating 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 may include a sixth radiator 342 , which 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 serve as a parasitic branch of the first antenna 201 to improve the radiation performance of the first antenna 201. For simplicity of discussion, in the present embodiment, only the example of the first frame 2710 having a slit at the tenth position 333 is used for illustration. In actual production or design, the first frame 2710 can also be coupled to the floor at the tenth position 333.

[0264] In one embodiment, the third frame 2740 further 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 further 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 operates via the first antenna 201, the sixth radiator 342 can be used to improve the radiation characteristics (e.g., operating bandwidth) of the first antenna 201. When the electronic device 100 does not operate via the first antenna 201, the sixth radiator 342 can be used to improve the radiation characteristics (e.g., operating bandwidth) of the second antenna 202 or the third antenna 301.

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

[0267] It should be understood that for the sake of simplicity of discussion, in the electronic device shown in Figure 29, only the example of the working frequency band of the first antenna including at least part of the satellite frequency band, the working frequency band of the second antenna including the L1 frequency band of GPS, and the working frequency band of the third antenna including the WiFi frequency band is used for illustration.

[0268] As shown in Figure 30, 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 a parasitic branch and only the first radiator serving as a parasitic branch, the radiation efficiency of the second antenna is improved by about 0.7dB. 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] As shown in Figure 31, 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, the radiation efficiency of the third antenna is improved by about 0.7dB when the first radiator, the fifth radiator and the sixth radiator are used as parasitic branches.

[0270] FIG32 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 operating state of the second antenna. For example, the operating state of the second antenna can be understood as whether the electronic device is communicating via 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 the operating 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 is communicating via the second antenna based on the first signal, and can switch the switch states of the first switch and the second switch based on whether the second antenna is communicating. For example, when the first antenna operates in a cellular frequency band and the second antenna operates in a WiFi frequency band, when the electronic device is communicating via the second antenna, the controller can switch the switch states of the first switch and the second switch, causing the first radiator to act 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 states 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 being 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 is communicating 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] FIG33 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0283] As shown in FIG. 33 , 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 can be located at the second side 132, which intersects the first side 131 at an angle. In one embodiment, the fourth position 404 can be located at the third side 133, which intersects the first side 131 at an angle.

[0286] The operating frequency band of the first antenna 410 includes a 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] Second antenna 420 operates in a second frequency band and a third frequency band. Second antenna 420 includes a second radiator 421 and a first tuning circuit 431. Second radiator 421 comprises a conductive portion of frame 11 between third position 403 and fourth position 404. Second radiator 421 includes a first connection point 422. First tuning circuit 431 is coupled between first connection point 422 and floor 300. First tuning circuit 431 can be used to switch the operating frequency band of second antenna 420.

[0288] 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 embodiments of the present application, when the first antenna 410 operates in the first frequency band and the second antenna 420 operates in the second frequency band, because the first and second frequency bands are the same or adjacent, and the second position 402 and the third position 403 are located on the first side 131 of the frame 11, the second antenna 420 significantly interferes with the first antenna 410, thereby deteriorating the radiation characteristics (e.g., radiation efficiency) of the first antenna 410. However, when the first antenna 410 operates in the first frequency band and the second antenna 420 operates in the third frequency band, 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 operating 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 a first position 401, a third position 403, and a fourth position 404. The frame 11 defines a first slit at a second position 402. The first end of the first radiator 411 is grounded (the end at the first position 401), and the second end is open (the end at the second position 402). The first and second ends of the second radiator 421 are both grounded.

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

[0293] In one embodiment, the second radiator 421 has a second slit. In one embodiment, the second slit may be located in a central region of the second radiator 421. The central region may be understood as a region 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 can 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 can 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 can 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 border 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 border 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 border 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 border 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, first tuning circuit 431 comprises a circuit including a switch. The switch can be used to switch between electronic components with different resistance, capacitance, or inductance values ​​coupled to first connection point 422 in different circuit states. Alternatively, the switch can be in an open state, disconnecting the electronic component from first connection point 422. Alternatively, the switch can directly couple floorboard 300 to first connection point 422, without any electronic components interposed between them. For the sake of brevity, the tuning circuits described in the embodiments of this application can be understood accordingly and will not be detailed here.

[0300] In one embodiment, the first antenna 410 may include a second tuning circuit 432, which may be used to switch the operating 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 different from and not 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 according to the switching information to switch the operating frequency band of the second antenna 420 from the second frequency band to the third frequency band.

[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 according to the switching information to switch the operating frequency band of the first antenna 410 from the first frequency band to the fourth frequency band.

[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 the mid-frequency band (1710 MHz-2170 MHz) or part of the communication frequency band in the high-frequency band (2300 MHz-2690 MHz).

[0309] In one embodiment, the first frequency band is the 2.4 GHz band (2.4-2.485 GHz) of WiFi, and the second frequency band is B40 (2.3-2.4 GHz) or B41 (2.496-2.69 GHz) in LTE. In one embodiment, the L1 frequency band (1578.42±1.023 MHz) in GPS, and the second frequency band is B3 (1.71-1.785 GHz) 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] Figures 34 and 35 are simulation results of the antennas in the electronic device 100 shown in Figure 33. Figure 34 is the S-parameter simulation result of the first antenna and the second antenna shown in Figure 33. Figure 35 is the simulation result of the radiation efficiency of the first antenna shown in Figure 33.

[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] As shown in Figure 34, when the second antenna operates in the second frequency band, it can resonate around 2.7 GHz. The corresponding resonant frequency band may include B41 (2.496-2.69 GHz) in LTE. Meanwhile, when the second antenna operates in the first or second frequency band, it has little effect on the resonance of the first antenna around 2.4 GHz.

[0314] As shown in Figure 35, when the first antenna operates in the first frequency band and the second antenna operates in the second frequency band, the radiation efficiency of the first antenna is -5.8dB. However, when the first antenna operates in the first frequency band and the second antenna operates in the third frequency band, the radiation efficiency of the first antenna is -4.2dB, an improvement of approximately 1.6dB.

[0315] FIG36 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0316] As shown in FIG. 36 , 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 a first position 401. The frame 11 defines a first gap and a second gap at a second position 402 and a 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 on the second side 132 of the frame 11 .

[0319] In one embodiment, the first end of the first radiator 411 is grounded (the end at the first position 401), and the second end is open (the end at the second position 402). The first end of the second radiator 421 is grounded (the end at the third position 403), and the second end is open (the 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 the electronic device 100 shown in FIG36 differs from the electronic device 100 shown in FIG33 only in the structure of the second antenna 420 and the first position 401, the second position 402, the third position 403 and the fourth position 404.

[0321] The parts of the electronic device 100 shown in Figure 36 that are similar to those of the electronic device 100 shown in Figure 33 are not described in detail one by one, for example, the relationship between the first frequency band and the second frequency band, the third frequency band; the relationship between the tuning circuit and the modem and the AP; the structure of the tuning circuit, etc.

[0322] FIG37 is a simulation result of the radiation efficiency of the first antenna shown in FIG36.

[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] As shown in Figure 37, when the first antenna operates in the first frequency band and the second antenna operates in the second frequency band, the radiation efficiency of the first antenna is -4.1dB. However, when the first antenna operates in the first frequency band and the second antenna operates in the third frequency band, the radiation efficiency of the first antenna is -3.1dB, an improvement of approximately 1dB.

[0325] FIG38 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0326] As shown in FIG. 38 , 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. The frame 11 is coupled to the floor 300 at the second position 402.

[0329] The operating frequency band of the first antenna 410 includes a 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] Second antenna 420 operates in a second frequency band and a third frequency band. Second antenna 420 includes a second radiator 421 and a first tuning circuit 431. Second radiator 421 comprises a conductive portion of frame 11 between second position 402 and third position 403. Second radiator 421 includes a first connection point 422. First tuning circuit 431 is coupled between first connection point 422 and floor 300. First tuning circuit 431 can be used to switch the operating frequency band of second antenna 420.

[0331] 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 embodiments 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, when the first radiator 411 generates a main resonance, the second radiator 421 can be stimulated to generate a parasitic resonance, and the parasitic resonance can be used to improve the radiation characteristics of the first antenna 410 (for example, radiation efficiency, operating bandwidth).

[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 a portion of a middle band (MB) (1710 MHz-2170 MHz) or at least a portion of a high band (HB) (2300 MHz-2690 MHz), and the third frequency band may include at least a portion of a low band (LB) (698 MHz-960 MHz).

[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 (e.g., the three-quarter-wavelength mode) of the second antenna 420 can be excited by coupling to generate parasitic resonance, thereby improving the radiation characteristics of the first antenna (e.g., radiation efficiency, operating bandwidth).

[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 a first location 401. The frame 11 has a first slit at a third location 403. The first and second ends of the first radiator 411 are both grounded. The first end of the second radiator 421 is grounded (the end at the second location 402), and the second end is open (the end at the third location 403).

[0340] In one embodiment, a second slit is formed in the first radiator 411. In one embodiment, the second slit may be located in a central region of the first radiator 411. The central region may be understood as a region 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, which 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 switches the operating frequency band of the second antenna 420 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. In one embodiment, as shown in FIG39 , the electronic device 100 can include the antennas shown in FIG33 , FIG36 , and FIG38 at the same time. The embodiments of the present application do not limit this and can be adjusted according to actual production or design.

[0347] FIG40 is a simulation result of the radiation efficiency of the first antenna shown in FIG38.

[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 used as an example for description.

[0349] As shown in FIG40 , when the first antenna operates in the first frequency band and the second antenna operates in the second frequency band, the radiation efficiency of the first antenna is improved by an average of about 0.5 dB in the high frequency band.

[0350] FIG41 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

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

[0352] It should be understood that the embodiments of the present application do not limit the structures of the first antenna 510 and the second antenna 520. The first antenna 510 and the second antenna 520 can be similar to the first antenna and the second antenna shown in the embodiments of the present application. In one embodiment, the first antenna 510 and the second antenna 520 can be similar to the first antenna and the second antenna shown in Figures 6, 11, 16, 19, 24, 29, 33, 36, or 38. For the sake of brevity, they are not described in detail here.

[0353] Meanwhile, similar first and second antennas can be understood as having the same boundary conditions of the antenna radiators and the relative position relationship between the first and second antennas, etc. The same boundary conditions can include whether the radiators have 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 resonant frequency generated by the first antenna 510, thereby enabling the first antenna 510 to operate 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 resonant point frequency generated by the second antenna 520, thereby enabling the second antenna 520 to operate 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 electrical signals transmitted or received by the first antenna 510. In one embodiment, the second modem 542 may be used to process electrical signals transmitted 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] A first port of the second modem 542 is electrically connected to the second switching port of the switch 531 . A 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 to 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 embodiments 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 are operating simultaneously, the first modem 541 controls the switch 531 via 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 operate the first antenna 510 in the corresponding operating frequency band. The second modem 542 controls the second tuning circuit 521 to operate the second antenna 520 in the corresponding operating frequency band.

[0363] When first antenna 510 is inoperative and second antenna 520 is operative, second modem 542 controls second tuning circuit 521 to operate second antenna 520 within the corresponding operating frequency band. First modem 541 controls switch 531 via the first port to electrically connect the connection port to the second switching port. Because the connection port of switch 531 is electrically connected to the second switching port, second modem 542 can control first tuning circuit 511, causing the radiator of first antenna 510 to function as a parasitic stub of second antenna 520, thereby improving the radiation performance (e.g., radiation efficiency) of second antenna 520.

[0364] Meanwhile, when first antenna 510 functions as a parasitic branch of second antenna 520 and needs to perform monitoring, first modem 541 electrically connects the connection port to the first switching port via first port control switch 531. First modem 541 controls first tuning circuit 511 to enable first antenna 510 to perform monitoring within the corresponding operating frequency band. After monitoring is complete, first modem 541 electrically connects the connection port to the second switching port via first port control switch 531, causing the radiator of first antenna 510 to function as a parasitic branch of second antenna 520.

[0365] When first antenna 510 is operating and second antenna 520 is not operating, first modem 541 controls switch 531 via the first port to electrically connect the connection port to the first switching port. Since the connection port of switch 531 is electrically connected to the first switching port, first modem 541 can control first tuning circuit 511 to operate first antenna 510 within the corresponding operating frequency band. Second modem 542 controls second tuning circuit 521 to cause the radiator of second antenna 520 to act as a parasitic stub of first antenna 510, thereby improving the radiation performance (e.g., radiation efficiency) of first antenna 510.

[0366] Meanwhile, when the second antenna 520 functions as a parasitic branch of the first antenna 510 and needs to perform sensing, the second modem 542 controls the second tuning circuit 521 to enable the second antenna 520 to perform sensing in the corresponding operating frequency band. After the sensing is completed, the second modem 542 controls the second tuning circuit 521 to enable the radiator of the second antenna 520 to function as a parasitic branch of the first antenna 510.

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

[0368] In one embodiment, the operating frequency band of the first antenna 510 is the 2.4G frequency band of WiFi or the L1 frequency band of GPS. The operating 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. A first port of the AP 540 is electrically connected to a first port of the controller 530, and a second port of the AP 540 is electrically connected to a third port of the first modem 541. A second port of the controller 530 is electrically connected to a 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 can be used to send the operating status of the first antenna 510 to the controller 530. For example, the operating status of the first antenna 510 can be understood as whether the electronic device 100 is communicating via the first antenna 510. The second modem 542 can be used to send the operating status of the second antenna 520 to the controller 530. For example, the operating status of the second antenna can be understood as whether the electronic device 100 is communicating via the second antenna 520.

[0372] When the electronic device 100 communicates through only 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, AP 540 sends a first signal to controller 530, and controller 530 can determine, based on the first signal, whether the electronic device is communicating via first antenna 510. Second modem 542 sends a second signal to controller 530, and controller 530 can determine, based on the second signal, whether the electronic device is communicating via second antenna 520. Controller 530 determines the operating states of first tuning circuit 511 and second tuning circuit 521 based on the first and second signals, thereby causing the antennas to generate corresponding resonances.

[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 operating 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 into the same chip.

[0377] It should be understood that if the controller 530 and the second modem 542 are independently provided and connected via an interface, the timing of the transmitted electrical signals may be disrupted, requiring a complex processing process. However, if the controller 530 and the second modem 542 are integrated into 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 via circuitry, which does not cause timing disruption of the transmitted electrical signals.

[0378] In one embodiment, the electronic device 100 may further include a system on chip (SoC), which 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] FIG42 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0380] As shown in FIG. 42 , 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 the only difference between the electronic device 100 shown in FIG. 42 and the electronic device 100 shown in FIG. 41 is the switch 532 .

[0384] In the electronic device 100 shown in Figure 41, 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] In the electronic device 100 shown in Figure 42, a switch 542 is set on the basis of the electronic device 100 shown in Figure 41. 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 the electronic device 100 shown in FIG. 42 , the first modem 541 or the second modem 542 can simultaneously control the first tuning circuit 511 and the second tuning circuit 521 .

[0387] When the first antenna 510 and the second antenna 520 are operating simultaneously, the first modem 541 controls the switch 531 via 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 via the fourth port to electrically connect the connection port of the switch 532 to the second switching port. The first modem 541 can control the first tuning circuit 511 to enable the first antenna 510 to operate in the corresponding operating frequency band. The second modem 542 can control the second tuning circuit 521 to enable the second antenna 520 to operate in the corresponding operating 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 so that the connection port of the switch 531 is electrically connected to the second 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 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 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.

[0389] Meanwhile, when first antenna 510 functions as a parasitic branch of second antenna 520 and needs to perform monitoring, first modem 541 controls switch 531 via the first port to electrically connect the connection port of switch 531 to the first switching port. First modem 541 then controls first tuning circuit 511 to enable first antenna 510 to perform monitoring within the corresponding operating frequency band. After monitoring is complete, first modem 541 controls switch 531 via the first port to electrically connect the connection port of switch 531 to the second switching port, thereby enabling the radiator of first antenna 510 to function as a parasitic branch of 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 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 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] Meanwhile, when second antenna 520 functions as a parasitic branch of first antenna 510 and needs to perform monitoring, second modem 542 controls switch 532 via its fourth port to electrically connect the connection port of switch 532 to the second switching port. Second modem 542 then controls second tuning circuit 521 to enable second antenna 520 to perform monitoring within the corresponding operating frequency band. After monitoring is complete, second modem 542 controls switch 532 via its fourth port to electrically connect the connection port of switch 532 to the first switching port, causing the radiator of second antenna 520 to function as a parasitic branch of first antenna 510.

[0392] The parts of the electronic device 100 shown in Figure 42 that are similar to those of the electronic device 100 shown in Figure 41 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 controller 530, etc.

[0393] FIG43 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0394] As shown in FIG. 43 , 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 resonant frequency generated by the first antenna 510, thereby enabling the first antenna 510 to operate 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 resonant point frequency generated by the second antenna 520, thereby enabling the second antenna 520 to operate in different communication frequency bands.

[0397] In one embodiment, the first modem 541 may be used to process electrical signals transmitted or received by the first antenna 510. In one embodiment, the second modem 542 may be used to process electrical signals 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 embodiments 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 the electronic device 100 shown in FIG. 43 differs from the electronic device 100 shown in FIG. 41 only in that the switch 531 is not provided.

[0402] In the electronic device 100 shown in Figure 41, 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] In the electronic device 100 shown in FIG. 43 , 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 operate simultaneously, the second modem 542 may control the first tuning circuit 511 and the second tuning circuit 521 to enable the first antenna 510 and the second antenna 520 to operate in corresponding operating 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] Meanwhile, when first antenna 510 is acting as a parasitic branch of second antenna 520 and needs to perform monitoring, first modem 541 sends an electrical signal to second modem 542. This electrical signal instructs first antenna 510 to perform monitoring and to switch first tuning circuit 511. Second modem 542 controls first tuning circuit 511 to enable first antenna 510 to perform monitoring within the corresponding operating frequency band. After monitoring is complete, second modem 542 controls first tuning circuit 511 to enable the radiator of first antenna 510 to function as a parasitic branch of 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] Meanwhile, when the second antenna 520 functions as a parasitic branch of the first antenna 510 and needs to perform sensing, the second modem 542 controls the second tuning circuit 521 to enable the second antenna 520 to perform sensing in the corresponding operating frequency band. After the sensing is completed, the second modem 542 controls the second tuning circuit 521 to enable the radiator of the second antenna 520 to function as a parasitic branch of the first antenna 510.

[0409] The parts of the electronic device 100 shown in Figure 43 that are similar to those of the electronic device 100 shown in Figure 41 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 controller 530, etc.

[0410] FIG44 is a schematic diagram of an electronic device 100 provided in an embodiment of the present application.

[0411] For simplicity, the above embodiment illustrates the tuning circuit as being connected in series within the circuit (for example, as shown in FIG43 , first tuning circuit 511 is connected in series with first antenna 510 and second modem 542). In actual production or application, the tuning circuit can also be connected in parallel within the circuit. As shown in FIG44 , the first end of first tuning circuit 511 is electrically connected between first antenna 510 and second modem 542, and the first end of 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, and it can be selected based on factors such as the layout within the electronic device.

[0413] Meanwhile, in the above embodiment, only a tuning circuit including a single-pole double throw (SPDT) switch is used as an example for description. In actual production or application, a single-pole multi-throw (SPXT) or multi-pole multi-throw (XPXT) switch may also be included. Alternatively, the tuning circuit may include multiple switches, formed by cascading multiple switches. As shown in FIG44 , 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, and it 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 this application.

[0416] Those skilled in the art will 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 this 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 merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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 devices or units can be electrical or other forms.

[0418] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device, 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 the 2.4G frequency band in WiFi, the second frequency band is B40 or B41 in the cellular network, or the first The frequency band is the L1 frequency band in the GPS, and the second frequency band is the B3 frequency band 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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