Electronic equipment

Abstract

The invention provides electronic equipment, the electronic equipment comprises an antenna, the antenna takes a conductive part of a frame of the electronic equipment as a radiator, and the experience of a user during satellite navigation or communication can be improved. The antenna further comprises a first feed circuit, a second feed circuit and a tuning circuit. The first feed circuit is used for transmitting an electric signal of a first frequency band, and the second feed circuit is used for transmitting an electric signal of a second frequency band. A controller of the electronic equipment is electrically connected with a tuning circuit of an antenna, and the controller is used for switching the circuit state of the tuning circuit to enable the antenna to work in a first frequency band or a second frequency band.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and particularly to an electronic device. Background Art

[0002] With the continuous evolution of mobile communication technology, satellite communication technology has gradually become a major feature in mobile terminal devices. However, the development trend of the industrial design (ID) of electronic devices is a large screen ratio and multiple cameras. This has caused a significant reduction in the antenna clearance, and the layout space is becoming more and more limited.

[0003] Moreover, satellite communication technology has high requirements for the radiation characteristics of antennas. How to implement satellite communication under the current architecture has become an urgent task. Summary of the Invention

[0004] This application provides an electronic device, which includes an antenna. The antenna uses the conductive part of the frame of the electronic device as a radiator, which can improve the user experience when performing satellite navigation or communication.

[0005] In a first aspect, a floor is provided; a frame, including a first side and a second side intersecting at an angle, the length of the first side being greater than the length of the second side, the second side including a first position and a second position, the frame opening a first slot and a second slot at the first position and the second position respectively; an antenna, including: a radiator, the radiator being the conductive part of the frame between the first position and the second position, a first feeding circuit and a second feeding circuit, the radiator including a feeding point, the first feeding circuit and the second feeding circuit being coupled to the feeding point, the first feeding circuit being used to transmit an electrical signal of a first frequency band, the second feeding circuit being used to transmit an electrical signal of a second frequency band; a tuning circuit, the radiator further including a connection point, the tuning circuit being coupled between the floor and the connection point; a controller, the controller being electrically connected to the tuning circuit, the controller being used to switch the circuit state of the tuning circuit to make the antenna operate in the first frequency band or the second frequency band; wherein, the first frequency band includes a satellite communication frequency band, and the second frequency band includes at least part of the frequency bands in short-range communication or at least part of the frequency bands in a cellular network.

[0006] According to the embodiments of this application, the controller can switch the circuit state of the tuning circuit to make the antenna operate in the first frequency band or the second frequency band, realizing the switching between different communication systems, thereby improving the radiation performance of the antenna in different communication systems.

[0007] The controller is used to switch the circuit state of the tuning circuit so that the antenna operates in the first frequency band or the second frequency band. It can be understood that the equivalent resistance value, equivalent capacitance value, or equivalent inductance value between the connection point and the ground plane is switched, so that the radiator generates the first resonance and the second resonance respectively. The resonance point frequencies of the first resonance and the second resonance are different. The resonance frequency band of the first resonance includes the first frequency band, and the resonance frequency band of the second resonance includes the second frequency band, so that the resonance frequency band of the resonance includes the first frequency band or the second frequency band.

[0008] Meanwhile, in the structure of the above antenna, the line DM mode of the radiator can be excited. It can be known from the above embodiments that when the radiator is arranged on the second side, the radiation efficiency and system efficiency of the resonance generated by the antenna in the line DM mode are relatively high. Since the gain of the antenna is related to the directivity and efficiency (radiation efficiency and system efficiency) of the antenna, when the efficiency (radiation efficiency and system efficiency) of the antenna is improved, the directivity remains unchanged, and the gain of the antenna can also be improved. Therefore, although when the electronic device communicates in the first frequency band (satellite frequency band), the polarization characteristic of the radiation generated by the antenna is similar to linear polarization, and there will be a loss of about when receiving circularly polarized electromagnetic waves, but due to the good efficiency (radiation efficiency and system efficiency) of the antenna.

[0009] Moreover, when the user performs satellite navigation or communication, it is necessary to point the maximum radiation direction of the antenna at the satellite to achieve satellite pointing (establish a communication connection with the satellite). In the technical solution provided by the embodiments of the present application, since the radiator is located on the second side, the maximum radiation direction of the antenna pattern generated by the antenna faces the top of the electronic device (for example, the y direction), so that when the user uses the electronic device to perform satellite navigation or communication in the first frequency band, there is no need to change the holding posture of the electronic device to obtain a good user experience.

[0010] Combined with the first aspect, in some implementation manners of the first aspect, the frame further includes a grounding point, the grounding point is located between the first position and the second position, and the frame is coupled to the ground plane at the grounding point.

[0011] According to the embodiments of the present application, the radiator includes a grounding point, and the radiator can generate additional resonance by the line CM mode. When the radiator can generate resonance by the line CM mode and the line DM mode at the same time, the proportion of the line DM mode in the first frequency band (the resonance frequency band of the first resonance) can be increased, so that the antenna mainly generates radiation by the line DM mode in the first frequency band (the resonance frequency band of the first resonance) to improve the radiation characteristics (such as radiation efficiency and system efficiency) of the antenna in the first frequency band.

[0012] Combined with the first aspect, in some implementation manners of the first aspect, the antenna further includes a grounding member, the first end of the grounding member is coupled to the grounding point, the second end of the grounding member is coupled to the ground plane, and the grounding member is integrally formed with the frame.

[0013] According to an embodiment of the present application, the grounding member, the frame, and the middle plate can be milled from the same metal part, thereby reducing the error during assembly and improving the radiation characteristics (e.g., bandwidth) of the antenna.

[0014] In combination with the first aspect, in some implementations of the first aspect, the feeding point and the connection point are located between the first position and the grounding point.

[0015] In combination with the first aspect, in some implementations of the first aspect, the antenna further includes a switch; wherein, the common port of the switch is coupled to the feeding point, the first port of the switch is coupled to the first feeding circuit, and the second port of the switch is coupled to the second feeding circuit.

[0016] In combination with the first aspect, in some implementations of the first aspect, the clearance of the antenna is less than or equal to 1.5 mm.

[0017] In combination with the first aspect, in some implementations of the first aspect, the clearance of the antenna is greater than or equal to 0.5 mm.

[0018] According to an embodiment of the present application, the clearance of the antenna can be understood as the minimum value of the distance between the radiator and the metal or electronic components close to the radiator. As the clearance of the antenna decreases, the radiation performance (e.g., bandwidth) of the antenna deteriorates.

[0019] In combination with the first aspect, in some implementations of the first aspect, the size of the radiator in the first direction is less than or equal to 3.5 mm and greater than or equal to 1.5 mm, and the first direction is the thickness direction of the electronic device.

[0020] According to an embodiment of the present application, when the thickness of the radiator (e.g., the size in the first direction) decreases, the radiation performance (e.g., bandwidth) of the antenna deteriorates.

[0021] In combination with the first aspect, in some implementations of the first aspect, the controller is configured to switch the antenna to operate in the first frequency band or the second frequency band, including: the controller switches the tuning circuit to be in a first circuit state or a second circuit state according to the operating state of the electronic device; based on the tuning circuit being in the first circuit state, the radiator is configured to generate a first resonance, and the resonance frequency band of the first resonance includes the first frequency band; based on the tuning circuit being in the second circuit state, the radiator is configured to generate a second resonance, and the resonance frequency band of the second resonance includes the second frequency band.

[0022] According to the embodiments of the present application, the circuit state of the tuning circuit can be understood as the equivalent resistance value, equivalent capacitance value, or equivalent inductance value between the connection point and the ground plane. The resonant point frequency of the resonance generated by the radiator can be adjusted through different circuit states.

[0023] In combination with the first aspect, in some implementation manners of the first aspect, the controller switches the tuning circuit to a first circuit state or a second circuit state according to the working state of the electronic device, including: when the first score is greater than or equal to the second score, the controller switches the tuning circuit to the first circuit state, where the first score is the score corresponding to the working state of the electronic device when the antenna operates in the first frequency band, and the second score is the score corresponding to the working state of the electronic device when the antenna operates in the second frequency band; when the first score is less than the second score, the controller switches the tuning circuit to the second circuit state.

[0024] According to the embodiments of the present application, the electronic device can simultaneously have multiple different working states. The first score and the second score can be the scores corresponding to different working states of the controller. Different working states can correspond to different priorities, and thus different scores, so that the electronic device can preferably be in the working state with a higher priority.

[0025] In combination with the first aspect, in some implementation manners of the first aspect, the working state includes at least one of the following: positioning off, continuous positioning - weak L1 signal outdoors, continuous positioning - strong L1 signal outdoors, continuous positioning - weak L5 signal outdoors, continuous positioning - strong L5 signal outdoors, continuous positioning - indoor positioning, continuous positioning - indoor / outdoor identification, single - point positioning - foreground, single - point positioning - background, satellite activation, satellite de - activation, satellite ready state, satellite transceiver state.

[0026] In combination with the first aspect, in some implementation manners of the first aspect, the electronic device includes a modem. The first port of the modem is electrically connected to the controller, and the second port of the modem is electrically connected to the tuning circuit.

[0027] In combination with the first aspect, in some implementation manners of the first aspect, the controller switches the tuning circuit to a first circuit state or a second circuit state according to the working state of the electronic device, including: the controller sends a first signal to the modem, and the first signal is used to indicate the circuit state of the tuning circuit; the modem switches the circuit state of the tuning circuit according to the first signal.

[0028] In combination with the first aspect, in some implementation manners of the first aspect, at the resonant point of the first resonance, the currents on the radiator are in the same direction. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of an electronic device 10 provided by an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the structure of the common - mode of a wire antenna provided by the present application, and the corresponding current and electric - field distributions.

[0031] Figure 3 It is a schematic diagram of the structure of the differential - mode of another wire antenna provided by the present application, and the corresponding current and electric - field distributions.

[0032] Figure 4 It is a schematic diagram of yet another electronic device 10 provided by an embodiment of the present application.

[0033] Figure 5 is Figure 4 The S - parameter simulation result of the antenna 100 in the electronic device 10 shown.

[0034] Figure 6 is Figure 4 The system - efficiency and radiation - efficiency simulation results of the antenna 100 in the electronic device 10 shown.

[0035] Figure 7 It is a schematic diagram of an electronic device 10 provided by an embodiment of the present application.

[0036] Figure 8 It is a schematic diagram of an electronic device 10 provided by an embodiment of the present application.

[0037] Figure 9 It is a schematic diagram of an electronic device 10 provided by an embodiment of the present application.

[0038] Figure 10 It is a schematic diagram of a process in an electronic device 10 provided by an embodiment of the present application.

[0039] Figure 11 It is a schematic diagram of the antenna - switching method 400 provided by an embodiment of the present application. Detailed implementation manners

[0040] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0041] It should be understood that the term "and / or" used herein is merely a description of the same fields of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0042] As used in this application, the phrase "within... range" includes the two end values of the range by default, unless it is specifically stated that the end values are not included. For example, within the range of 1 to 5, both the values 1 and 5 are included.

[0043] Coupling: It can be understood as direct coupling and / or indirect coupling. "Coupled connection" can be understood as direct coupled connection and / or indirect coupled connection. Direct coupling can also be referred to as "electrical connection", which means that components are in physical contact and electrically conductive; it can also be understood as a form of connection between different components in a circuit structure through physical lines such as copper foils or wires of a printed circuit board (PCB) that can transmit electrical signals. "Indirect coupling" can be understood as the electrical conductivity of two conductors in a non-contact manner through air separation. In some embodiments, indirect coupling can also be referred to as capacitive coupling. For example, signal transmission is achieved by forming an equivalent capacitance through the coupling between the gaps separating two conductive members.

[0044] Element / device: Includes at least one of lumped elements / devices and distributed elements / devices.

[0045] Lumped element / device: Refers to the general term for all elements when the size of the element is much smaller than the wavelength corresponding to the operating frequency of the circuit. For a signal, regardless of the time, the characteristics of the element always remain fixed and are independent of frequency.

[0046] Distributed element / device: Different from lumped elements, when the size of the element is about the same as or larger than the wavelength corresponding to the operating frequency of the circuit, when a signal passes through the element, the characteristics of each point of the element itself will vary with the change of the signal. At this time, the element as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed element.

[0047] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to components with capacitive properties, such as capacitor elements; distributed capacitance (or distributed capacitor) refers to the equivalent capacitance formed by separating two conductive members by a certain gap.

[0048] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to components with inductive properties, such as inductor elements; distributed inductance (or distributed inductor) refers to the equivalent inductance formed by a conductive member of a certain length.

[0049] Radiator: It is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the "antenna" in a narrow sense is understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0050] 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 some embodiments, the linear radiator may be simply referred to as a linear antenna. In some embodiments, the linear radiator may be implemented by a conductive frame, which may also be referred to as a frame antenna. In some embodiments, the linear radiator may be implemented by a bracket conductor, which may also be referred to as a bracket antenna. In some embodiments, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted F antenna because its side view is an inverted F shape. In some embodiments, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted F Antenna). In some embodiments, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In some embodiments, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In some embodiments, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shapes of the sheet radiator include 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 disposed between the radiator and the floor.

[0051] The radiator may also include a groove or slit formed on a conductor. For example, a closed or semi-closed groove or slit is formed on a grounded conductor surface. In some embodiments, the slotted or slit radiator may be simply referred to as a slot antenna or a slotted antenna. In some embodiments, the radial dimension (e.g., including the width) of the slot or slit of the slot antenna / slotted antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In some embodiments, the radiator with a closed groove or slit may be simply referred to as a closed slot antenna. In some embodiments, the radiator with a semi-closed groove or slit (e.g., adding an opening to the closed groove or slit) may be simply referred to as an open slot antenna. In some embodiments, the shape of the slit is elongated. In some embodiments, the length of the slit is about half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the slit is about an integer multiple of the wavelength (e.g., one dielectric wavelength). In some embodiments, the slit can be fed by a transmission line bridging one or both sides of it. Thus, a radio frequency electromagnetic field is excited on the slit, and electromagnetic waves are radiated into space. In some embodiments, the radiator of the slot antenna or the slotted antenna can be implemented by a conductive frame grounded at both ends, and can also be referred to as a frame antenna; in this embodiment, it can be regarded that the slot antenna or the slotted antenna includes a linear radiator, the linear radiator is spaced from the floor and grounded at both ends of the radiator, so as to form a closed or semi-closed groove or slit. In some embodiments, the radiator of the slot antenna or the slotted antenna can be implemented by a support conductor grounded at both ends, and can also be referred to as a support antenna.

[0052] The feeding circuit is a combination of all circuits for receiving and transmitting radio frequency signals. The feeding circuit may include a transceiver and a radio frequency front-end circuit (RF front end). In some cases, "feeding circuit" is narrowly understood as a radio frequency integrated circuit (RFIC), and the RFIC can be considered to include a radio frequency front-end chip and a transceiver. The feeding circuit has the function of converting radio waves (e.g., radio frequency signals) and electrical signals (e.g., digital signals). Generally, it is considered to be part of the radio frequency.

[0053] In some embodiments, the electronic device may further include a test socket (or referred to as a radio frequency socket or a radio frequency test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the radio frequency front-end circuit or the radiator of the antenna through the cable. The radio frequency front-end circuit can be considered as the circuit part coupled between the test socket and the transceiver.

[0054] In some embodiments, the radio frequency front-end circuit can be integrated into a radio frequency front-end chip in an electronic device, or the radio frequency front-end circuit and the transceiver can be integrated into a radio frequency chip in the electronic device.

[0055] It should be understood that any two of the first / second / ... / Nth feeding circuits in the present application can share the same transceiver. For example, signals can be transmitted through a radio frequency channel (e.g., a port (pin) of a radio frequency chip) in a transceiver; they can also share a radio frequency front-end circuit. For example, signals can be processed by a switch or an amplifier in a radio frequency front-end.

[0056] It should also be understood that two of the first / second / ... / Nth feeding circuits in the present application generally correspond to two radio frequency test sockets in an electronic device.

[0057] The matching circuit is a circuit used to adjust the radiation characteristics of the antenna. In some embodiments, the matching circuit is coupled between the feeding circuit and the corresponding radiator. In some embodiments, the matching circuit is coupled between the test socket and the radiator. Generally, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In some embodiments, the matching circuit can include a switch and / or electronic components. The switch can be an electronic component for switching the coupled connection of the radiator. The matching circuit has the functions of impedance matching and / or frequency tuning. Generally, it is considered to be a part of the antenna.

[0058] The grounding structure / feeding structure can include a connecting member, such as a metal shrapnel. The radiator is coupled to the ground plane through the grounding structure / the feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure can include a transmission line / feeding wire, and the grounding structure can include a grounding wire.

[0059] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator should not be narrowly understood as an endpoint or end that is physically disconnected from other radiators. It can also be considered as a certain point or a certain section on a continuous radiator. In some embodiments, the "end / point" can include the connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feeding end / feeding point can be the coupling area on the antenna radiator that is coupled to the feeding structure (e.g., the area facing a part of the feeding structure), and for another example, the grounding end / grounding point can be the connection / coupling area on the antenna radiator that is coupled to the grounding structure.

[0060] Open end, closed end: In some embodiments, the open end and the closed end are, for example, defined relative to whether they are grounded. The closed end is grounded and the open end is not grounded. In some embodiments, the open end and the closed end are, for example, defined relative to other conductive bodies. The closed end is electrically connected to other conductive bodies and the open end is not electrically connected to other conductive bodies. In some embodiments, the open end can also be referred to as a floating end, a free end, an open end, or an open circuit end. In some embodiments, the closed end can also be referred to as a grounded end or a short circuit end. It should be understood that in some embodiments, other conductive bodies can be coupled to the open end to transfer coupled energy (which can be understood as transferring current).

[0061] In some embodiments, the understanding of the "closed end" can also be from the perspective of current distribution. The closed end or the grounded end, etc., can be understood as the current maximum point on the radiator, or can be understood as the electric field minimum point on the radiator. In some embodiments, coupling electronic devices (such as capacitors, inductors, etc.) through the closed end may not change the current distribution characteristics of its current maximum point / electric field minimum point. In some embodiments, opening a slit (such as a slit filled with an insulating material) at or near the closed end may not change the current distribution characteristics of its current maximum point / electric field minimum point.

[0062] In some embodiments, the understanding of the "open end" can also be from the perspective of current distribution. The open end or the floating end, etc., can be understood as the current minimum point on the radiator, or can be understood as the electric field maximum point on the radiator. In some embodiments, coupling electronic devices (such as capacitors, inductors, etc.) through the open end may not change the current distribution characteristics of its current minimum point / electric field maximum point.

[0063] It should be understood that coupling an electronic device (such as a capacitor, an inductor, etc.) to the radiator end at a slit (viewed from the structure of the radiator, similar to the opening of an open end or a floating end) can make the radiator end the current maximum point / electric field minimum point. In this case, it should be understood that the radiator end at this slit is actually the closed end or the grounded end, etc.

[0064] The "floating radiator" mentioned in the embodiments of the present application refers to a radiator that is not directly connected to the feeder / feeding stub and / or the ground wire / grounding stub, but is fed and / or grounded through an indirect coupling method.

[0065] It should be understood that the "floating" in the "floating end" and the "floating radiator" does not mean that there is no structure around the radiator to support it. In some embodiments, the floating radiator can be, for example, a radiator disposed on the inner surface of an insulating rear cover.

[0066] In the embodiments of the present application, the same / different directions of the current should be understood as the directions of the main currents on the conductors on the same side being the same / different. For example, when exciting the same-direction distributed current on a bent or loop-shaped conductor (for example, the current path is also bent or loop-shaped), it should be understood that, for example, although the main currents excited on the conductors on both sides of the loop-shaped conductor (for example, the conductors around a gap, on the conductors on both sides of the gap) are in opposite directions when viewed from the direction, it still belongs to the definition of the same-direction distributed current in the embodiments of the present application. In some embodiments, the same direction of the current on a conductor may mean that there is no reverse point in the current on the conductor. In some embodiments, the reverse direction of the current on a conductor may mean that there is at least one reverse point in the current on the conductor. In some embodiments, the same direction of the currents on two conductors may mean that there is no reverse point in the currents on both conductors and they flow in the same direction. In some embodiments, the reverse direction of the currents on two conductors may mean that there is no reverse point in the currents on both conductors and they flow in opposite directions. The same / different directions of the currents on multiple conductors can be understood accordingly.

[0067] In the embodiments of the present application, the same / different directions of the electric field should be understood as the directions of the main electric fields generated by the conductors in space (for example, the electric field between the conductor and the floor) being the same / different. For example, when exciting the same-direction distributed electric field on a bent or loop-shaped conductor (for example, the gap formed between the floor and the conductor is also bent or loop-shaped), it should be understood that, for example, the directions of the electric fields in the gap are all from the floor to the conductor, or from the conductor to the floor. Although the main electric fields excited in the gaps on both sides of the loop-shaped conductor (for example, the conductors around a gap, in the gaps on both sides of the gap) are in opposite directions when viewed from the direction, it still belongs to the definition of the same-direction distributed electric field in the embodiments of the present application. In some embodiments, the same direction of the electric field between a conductor and the floor may mean that there is no reverse point in the electric field between the conductor and the floor. In some embodiments, the reverse direction of the electric field between a conductor and the floor may mean that there is at least one reverse point in the electric field between the conductor and the floor. In some embodiments, the same direction of the electric fields between two conductors and the floor may mean that there is no reverse point in the electric fields between both conductors and the floor and they radiate in the same direction (for example, the positive direction of the z-axis). In some embodiments, the reverse direction of the electric fields between two conductors and the floor may mean that there is no reverse point in the electric fields between both conductors and the floor and they flow in opposite directions. The same / different directions of the electric fields between multiple conductors and the floor can be understood accordingly.

[0068] Resonance / Resonant Frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency point. The return loss characteristic of the center frequency can be less than -20 dB. It should be understood that if there is no additional explanation, when the antenna / radiator mentioned in this application generates "the first / second... resonance", among them, the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or rather, the resonance with the lowest frequency generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to specific designs, and each antenna mode can correspondingly generate a fundamental mode resonance.

[0069] Resonant Frequency Band: The range of the resonant frequency is the resonant frequency band, and the return loss characteristic of any frequency point within the resonant frequency band can be less than -6 dB or -5 dB.

[0070] Communication Frequency Band / Operating Frequency Band: No matter what type of antenna, it always operates within a certain frequency range (frequency band width). For example, an antenna supporting Band B40 has an operating frequency band including frequencies within the range of 2300 MHz to 2400 MHz, or rather, the operating frequency band of this antenna includes Band B40. The frequency range that meets the index requirements can be regarded as the operating frequency band of the antenna.

[0071] The resonant frequency band and the operating frequency band can be the same or can partially overlap. In some embodiments, one or more resonant frequency bands of the antenna can cover one or more operating frequency bands of the antenna.

[0072] Electrical Length: It can refer to the ratio of the physical length (i.e., mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0073]

[0074] where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0075] Wavelength: Or the operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink frequency band (resonant frequency from 1920 MHz to 1980 MHz) is 1955 MHz, then the operating wavelength can be the wavelength calculated using this frequency of 1955 MHz. Not limited to the center frequency, the "operating wavelength" can also refer to the wavelength corresponding to a non - center frequency of the resonant frequency or the operating frequency band.

[0076] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (air wavelength, or vacuum wavelength) = speed of light / frequency, where the frequency is the frequency 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 a medium can be calculated as follows: medium where ε is the relative permittivity of the medium. The wavelength in the embodiments of the present application usually refers to the medium wavelength, which can be the medium wavelength corresponding to the center frequency of the resonant frequency, or the medium wavelength corresponding to the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920 MHz to 1980 MHz) is 1955 MHz, then the wavelength can be the medium wavelength calculated using this frequency of 1955 MHz. Not limited to the center frequency, the "medium wavelength" can also refer to the medium wavelength corresponding to a non-center frequency of the resonant frequency or the operating frequency band. For ease of understanding, the medium wavelength mentioned in the embodiments of the present application can be simply calculated by the relative permittivity of the medium filled on one side or multiple sides of the radiator.

[0077] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna is characterized.

[0078] Antenna system efficiency (total efficiency): It refers to the ratio of the input power to the output power at the port of the antenna.

[0079] Antenna radiation efficiency: It refers to the ratio of the power radiated by the antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power, the ohmic loss power of the metal, and / or the dielectric loss power. The radiation efficiency is a value measuring the radiation ability of the antenna, and both the metal loss and the dielectric loss are influencing factors of the radiation efficiency.

[0080] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna is characterized.

[0081] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the signal power transmitted from the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the larger the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the smaller the radiation efficiency of the antenna.

[0082] The antenna return loss can be represented by the S11 parameter, and S11 is one of the S parameters. S11 represents the reflection coefficient, and this parameter can characterize the quality of the antenna transmission efficiency. The S11 parameter is usually negative. The smaller the S11 parameter, the smaller the antenna return loss, the smaller the energy reflected by the antenna itself, which means that the more energy actually enters the antenna, and the higher the system efficiency of the antenna; the larger the S11 parameter, the larger the antenna return loss, and the lower the system efficiency of the antenna.

[0083] It should be noted that in engineering, the S11 value of -6 dB is generally used as the standard. When the S11 value of the antenna is less than -6 dB, it can be considered that the antenna can work normally, or it can be considered that the transmission efficiency of the antenna is good.

[0084] Antenna pattern: Also known as the radiation pattern. It refers to the graph of the relative field strength (normalized modulus value) of the antenna radiation field changing with direction at a certain distance from the antenna (far field). Usually, it is represented by two mutually perpendicular plane patterns passing through the maximum radiation direction of the antenna.

[0085] The antenna pattern usually has multiple radiation beams. Among them, the radiation beam with the largest radiation intensity is called the main lobe, and the remaining radiation beams are called side lobes or minor lobes. Among the side lobes, the side lobe in the opposite direction to the main lobe is also called the back lobe.

[0086] Directivity: Also known as the directivity of the antenna. It refers to the ratio of the maximum power density to the average value on the antenna pattern at a certain distance from the antenna (far field), which is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of the antenna. When the directivity is larger, it means that the proportion of the energy radiated by the antenna in a certain direction is more, and the energy radiation is more concentrated.

[0087] Antenna gain: Used to characterize the degree to which the antenna concentrates and radiates the input power. Usually, the narrower the main lobe of the antenna pattern and the smaller the side lobes, the higher the antenna gain.

[0088] The polarization direction of the antenna: At a given point in space, the electric field strength E (vector) is a function of time t. As time goes by, the end point of the vector periodically depicts a trajectory in space. If the trajectory is a straight line and perpendicular to the ground, it is called vertical polarization; if it is horizontal to the ground, it is called horizontal polarization. If the trajectory is an ellipse or a circle and rotates along the right hand or clockwise direction when observed along the propagation direction, it is called right-hand circular polarization (RHCP); if it rotates along the left hand or counterclockwise direction, it is called left-hand circular polarization (LHCP).

[0089] Clearance: Refers to the minimum distance between the radiator of the antenna and the metal or electronic components close to the radiator. For example, when a part of the metal frame of an electronic device serves as the radiator of the antenna, the clearance can refer to the distance between the radiator and the printed circuit board or electronic components (such as a camera).

[0090] Ground (floor) (GND): Generally refers to at least a part of any ground layer, ground plane, or ground metal layer within an electronic device (such as a mobile phone), or at least a part of any combination of the above ground layers, ground planes, or ground components. "Ground" can be used for grounding components within the electronic device. In one embodiment, "ground" can be the ground layer of the circuit board of the electronic device, or the ground plane formed by the middle frame of the electronic device, or the ground metal layer formed by the metal film under the screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 - 14-layer board with 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric layers or insulating layers such as fiberglass, polymers, etc. In one embodiment, the circuit board includes a dielectric substrate, a ground layer, and a trace layer, and the trace layer and the ground layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on the circuit board or connected to the circuit board; or electrically connected to the trace layer and / or the ground layer in the circuit board. For example, a radio frequency source is disposed on the trace layer.

[0091] Any of the above ground layers, ground planes, or ground metal layers is made of a conductive material. In one embodiment, the conductive material can be any one of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate, tin-plated copper, cloth impregnated with graphite powder, graphite-coated substrate, copper-plated substrate, brass-plated substrate, and aluminum-plated substrate. Those skilled in the art can understand that the ground layer / ground plane / ground metal layer can also be made of other conductive materials.

[0092] Grounding: Refers to achieving coupling with the above ground / floor in any way. In some embodiments, grounding can be through physical grounding, such as achieving physical grounding (or called, physical ground) at specific positions on the frame through some structural components of the middle frame. In some embodiments, grounding can be through device grounding, such as grounding through devices such as series or parallel capacitors / inductors / resistors (or called, device ground).

[0093] The technical solutions of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0094] As Figure 1 shown, the electronic device 10 may include: a cover 13, a display / display module 15, a printed circuit board (PCB) 17, a middle frame 19, and a rear cover 21. It should be understood that in some embodiments, the cover 13 may be a cover glass, or may be replaced with a cover made of other materials, such as a cover made of PET (Polyethylene terephthalate) material, etc.

[0095] Among them, the cover 13 may be disposed closely to the display module 15, and may mainly be used to protect the display module 15 and prevent dust.

[0096] In some embodiments, the display module 15 may include a liquid crystal display (LCD), a light emitting diode (LED) display panel, or an organic light-emitting diode (OLED) display panel, etc., and the embodiments of the present application do not limit this.

[0097] The middle frame 19 mainly plays a supporting role for the whole machine. Figure 1As shown, the PCB 17 is disposed between the middle frame 19 and the rear cover 21. It should be understood that in some embodiments, the PCB 17 may also be disposed between the middle frame 19 and the display module 15, and the embodiments of the present application do not limit this. Among them, the printed circuit board PCB 17 may adopt a flame-retardant material (FR-4) dielectric board, or a Rogers dielectric board, or a hybrid dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a flame-retardant material grade, and the Rogers dielectric board is a high-frequency board. Electronic components are carried on the PCB 17, for example, radio frequency chips, etc. In some embodiments, a metal layer may be provided on the printed circuit board PCB 17. This metal layer can be used for grounding the electronic components carried on the printed circuit board PCB 17, and can also be used for grounding other components, such as a bracket antenna, a frame antenna, etc. This metal layer can be called a floor, or a ground plane, or a ground layer. In some embodiments, this metal layer can be formed by etching metal on the surface of any layer of dielectric board in the PCB 17. In some embodiments, the metal layer for grounding can be disposed on the side of the printed circuit board PCB 17 close to the middle frame 19. In some embodiments, the edge of the printed circuit board PCB 17 can be regarded as the edge of its ground layer. In some embodiments, the metal middle frame 19 can also be used for grounding the above components. The electronic device 10 may also have other floors / ground planes / ground layers. As described above, details are not elaborated here.

[0098] Due to the compactness inside the electronic device, generally, floors / ground planes / ground layers are provided in the internal space within 0-2 mm from the inner surface of the frame (for example, the printed circuit board, the middle frame, the screen metal layer, the battery, etc. can all be regarded as part of the floor). In some embodiments, a dielectric is filled between the frame and the floor. The length and width of the rectangle formed by enclosing the inner surface contour of the filled dielectric can be simply regarded as the length and width of the floor; or the length and width of the rectangle formed by enclosing the contour formed by superimposing all the conductive parts inside the frame can be regarded as the length and width of the floor.

[0099] Among them, the electronic device 10 may further include a battery (not shown in the figure). The battery can be disposed between the middle frame 19 and the rear cover 21, or can be disposed between the middle frame 19 and the display module 15, and the embodiments of the present application do not limit this. In some embodiments, the PCB 17 is divided into a main board and a daughter board, and the battery can be disposed between the main board and the daughter board. Among them, the main board can be disposed between the middle frame 19 and the upper edge of the battery, and the daughter board can be disposed between the middle frame 19 and the lower edge of the battery.

[0100] The electronic device 10 may further include a frame 11, which may be formed of a conductive material such as metal. The frame 11 may be disposed between the display module 15 and the rear cover 21 and extend circumferentially around the periphery of the electronic device 10. The frame 11 may 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 may be directly used as the conductive frame of the electronic device 10, for example, to form the appearance of a metal frame, which is suitable for metal industrial design (ID). In one implementation, the outer surface of the frame 11 may be a conductive material, such as a metal material, so as to form the appearance of a metal frame. In these implementations, the conductive portion of the frame 11 may be used as the antenna radiator of the electronic device 10.

[0101] In another implementation, the outer surface of the frame 11 may also be a non-conductive material, such as plastic, to form the appearance of a non-metal frame, which is suitable for non-metal 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 may be used as the antenna radiator of the electronic device 10. It should be understood that the radiator disposed on the inner surface of the frame 11 (or the conductive material on the inner surface) is disposed in conformity 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.

[0102] The middle frame 19 may include the frame 11. The middle frame 19 including the frame 11, as an integral part, may support the electronic components in the whole machine. The cover plate 13 and the rear cover 21 are respectively covered along the upper and lower edges of the frame to form the outer shell or housing of the electronic device. In some embodiments, the cover plate 13, the rear cover 21, the frame 11, and / or the middle frame 19 may be collectively referred to as the outer shell or housing of the electronic device 10. It should be understood that the "outer shell or housing" may be used to refer to part or all of any one of the cover plate 13, the rear cover 21, the frame 11, or the middle frame 19, or refer to part or all of any combination of the cover plate 13, the rear cover 21, the frame 11, or the middle frame 19.

[0103] The frame 11 may at least partially serve as an antenna radiator to receive / transmit radio frequency signals. There may be a gap between this part of the frame serving as the radiator and the other parts of the middle frame 19, so as to ensure that the antenna radiator has a good radiation environment. In some embodiments, the middle frame 19 may be provided with apertures at this part of the frame serving as the radiator to facilitate the radiation of the antenna.

[0104] Alternatively, the frame 11 may not be regarded as part of the middle frame 19. In some embodiments, the frame 11 may be connected to and integrally formed with the middle frame 19. In another embodiment, the frame 11 may include a protruding member extending inward to be connected to the middle frame 19, for example, connected by a spring piece, a screw, welding, etc. The protruding member of the frame 11 can also be used to receive a feeding signal, so that at least a part of the frame 11 serves as a radiator of the antenna to receive / transmit radio frequency signals. There may be a gap between this part of the frame serving as the radiator and the middle frame 19, so as to ensure that the antenna radiator has a good radiation environment and enable the antenna to have a good signal transmission function.

[0105] Among them, the rear cover 21 may be a rear cover made of a metal material; it may also be a rear cover made of a non-conductive material, such as a non-metal rear cover such as a glass rear cover or a plastic rear cover; it may also be a rear cover made of both a conductive material and a non-conductive material. In some embodiments, the rear cover 21 including a conductive material can replace the middle frame 19 and, together with the frame 11, serve as an integral part to support the electronic devices in the whole machine.

[0106] In some embodiments, the middle frame 19 and / or the conductive part of the rear cover 21 can serve as the reference ground of the electronic device 10. Among them, the frame 11, the PCB 17, etc. of the electronic device can be grounded through electrical connection with the middle frame.

[0107] The antenna of the electronic device 10 can also be disposed within the frame 11. When the frame 11 of the electronic device 10 is made of a non-conductive material, the antenna radiator can be located inside the electronic device 10 and extend along the frame 11. For example, the antenna radiator is disposed close to the frame 11 to minimize the volume occupied by the antenna radiator and be closer to the outside of the electronic device 10 to achieve a better signal transmission effect. It should be noted that the antenna radiator being disposed close to the frame 11 means that the antenna radiator can be disposed closely against the frame 11 or be close to the frame 11. For example, there can be a certain small gap between the antenna radiator and the frame 11.

[0108] The antenna of the electronic device 10 can also be disposed within the housing, such as a bracket antenna, a millimeter-wave antenna, etc. Figure 1(not shown in the figure). The clearance of the antenna disposed within the housing can be obtained by a slit / aperture on any one of the middle frame, and / or the side frame, and / or the rear cover, and / or the display screen, or by a non-conductive gap / aperture formed between any several of them. The setting of the clearance of the antenna can ensure the radiation characteristics of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive component within the electronic device 10, and the antenna radiates signals to the external space through this non-conductive area. In some embodiments, the form of the antenna 40 can be an antenna form based on a flexible printed circuit (FPC), an antenna form based on laser-direct-structuring (LDS), or a microstrip disk antenna (MDA), etc. In some embodiments, the antenna can also adopt a transparent structure embedded inside the screen of the electronic device 10, such that the antenna is a transparent antenna unit embedded inside the screen of the electronic device 10.

[0109] Figure 1 Only some components included in the electronic device 10 are schematically shown, and the actual shape, actual size, and actual structure of these components are not limited by Figure 1 limitations.

[0110] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be regarded as the front surface, the surface where the rear cover is located can be regarded as the back surface, and the surface where the side frame is located can be regarded as the side surface.

[0111] It should be understood that in the embodiments of the present application, when it is considered that the user holds the electronic device (usually vertically and facing the screen), the orientation of the electronic device has a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when it is considered that the user holds the electronic device (usually vertically and facing the screen), the orientation of the electronic device has a top, a bottom, a left side, and a right side.

[0112] With the continuous evolution of mobile communication technologies, satellite communication technologies have gradually become a major feature function in mobile terminal devices. However, the development trend of the industrial design of electronic devices is a large screen ratio and multiple cameras. This has caused a significant reduction in the clearance of the antenna and the layout space is becoming more and more limited.

[0113] Embodiments of the present application provide an electronic device, which includes an antenna. The conductive part of the side frame of the electronic device serves as a radiator for the antenna, which can improve the user experience during satellite navigation or communication.

[0114] First, Figure 2 and Figure 3 are used to introduce two antenna modes involved in the present application. Among them, Figure 2It is a schematic diagram of the structure of the common mode of an antenna provided by this application, as well as the corresponding current and electric field distributions. Figure 3 It is a schematic diagram of the structure of the differential mode of another antenna provided by this application, as well as the corresponding current and electric field distributions. Figure 2 and Figure 3 The two ends of the antenna radiator in Figure 3 are open, and its common mode and differential mode can be respectively referred to as the line common mode and the line differential mode.

[0115] It should be understood that the "common-differential mode" or "CM-DM mode" in this application refers to the line common mode and the line differential mode generated on the same radiator.

[0116] 1. Line (Wire) common mode (CM)

[0117] Figure 2 In (a) of Figure 2 , it shows that the two ends of the radiator of antenna 40 are open, and a feeding circuit (not shown in the figure) is connected at the middle position 41. In some embodiments, the feeding form of antenna 40 adopts symmetrical feed. The feeding circuit can be connected to the middle position 41 of antenna 40 through the feeding wire 42. It should be understood that symmetrical feed can be understood as one end of the feeding circuit is connected to the radiator, and the other end is coupled to the ground through the floor. Among them, the connection point (feeding point) of the feeding circuit and the radiator is located at the center of the radiator. The center of the radiator can be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or a region within a certain range near the above midpoint).

[0118] The middle position 41 of antenna 40 can be, for example, the geometric center of the antenna, or the midpoint of the electrical length of the radiator. For example, the connection part of the feeding wire 42 and antenna 40 covers the middle position 41.

[0119] Figure 2 In (b) of Figure 2 , it shows the current and electric field distributions of antenna 40. As shown in (b) of Figure 2 Figure 2 As shown in (b) of Figure 2 , the current shows a reverse distribution on both sides of the middle position 41, for example, a symmetrical distribution; the electric field shows a same-direction distribution on both sides of the middle position 41. As shown in (b) of Figure 2 Figure 2 As shown in (b) of Figure 2 , the current at the feeding wire 42 shows a same-direction distribution. Based on the same-direction distribution of the current at the feeding wire 42, Figure 2 The feeding shown in (a) of Figure 2 can be called line CM feeding. Based on the reverse distribution of the current on both sides of the connection part of the radiator and the feeding wire 42, Figure 2 The antenna mode shown in (b) of Figure 2 can be called the line CM mode (which can also be simply referred to as the CM mode. For example, for a line antenna, the CM mode refers to the line CM mode). Figure 2 The current and electric field shown in (b) of Figure 2 can be respectively called the current and electric field of the line CM mode.

[0120] The current is stronger at the middle position 41 of the antenna 40 (the current peak is near the middle position 41 of the antenna 40), and weaker at both ends of the antenna 40, as shown in Figure 2 (b) thereof. The electric field is weaker at the middle position 41 of the antenna 40 and stronger at both ends of the antenna 40.

[0121] 2. Differential mode (DM)

[0122] As shown in Figure 3 (a) thereof, the left and right ends of the two radiators of the antenna 50 are open ends, and a feeding circuit is connected at the middle position 51. In some embodiments, the feeding form of the antenna 50 adopts anti-symmetrical feeding. One end of the feeding circuit is connected to one of the radiators through a feeding wire 52, and the other end of the feeding circuit is connected to the other radiator through the feeding wire 52. The middle position 51 may be the geometric center of the antenna 50, or a gap formed between the radiators.

[0123] It should be understood that the "central anti-symmetrical feeding" mentioned in the present application can be understood as that the positive and negative poles of the feeding unit are respectively connected to two connection points near the above-mentioned midpoints of the radiators. In some embodiments, the signal amplitudes output by the positive and negative poles of the feeding unit are the same, and the phases are opposite, for example, the phase difference is 180° ± 10°.

[0124] Figure 3 (b) thereof shows the current and electric field distributions of the antenna 50. As shown in Figure 3 (b) thereof, the current shows a co-directional distribution on both sides of the middle position 51 of the antenna 50, for example, an anti-symmetrical distribution; the electric field shows an anti-directional distribution on both sides of the middle position 51. As shown in Figure 3 (b) thereof, the current at the feeding wire 52 shows an anti-directional distribution. Based on the anti-directional current distribution at the feeding wire 52, Figure 3 the feeding shown in (a) thereof can be called line DM feeding. Based on the co-directional current distribution on both sides of the connection between the radiator and the feeding wire 52, Figure 3 the antenna mode shown in (b) thereof can be called line DM mode (which can also be simply called DM mode. For example, for a line antenna, the DM mode refers to the line DM mode). Figure 3 The current and electric field shown in (b) thereof can be respectively called the current and electric field of the line DM mode. It should be understood that based on the co-directional current distribution on both sides of the connection between the radiator and the feeding wire 52, Figure 3 the antenna mode shown in (b) thereof can also be called a half-antenna mode, or a half-wavelength mode, or simply called a half mode.

[0125] In some embodiments, in the online DM mode, or the half mode, the current is stronger at the middle position 51 of the antenna 50 (the current maximum is near the middle position 51 of the antenna 50), and weaker at both ends of the antenna 50, as shown in (b) of Figure 3 The electric field is weaker at the middle position 51 of the antenna 50 and stronger at both ends of the online antenna 50.

[0126] It should be understood that for the antenna radiator, it can be understood as a metal structure that generates radiation, and the number thereof can be one, as shown in Figure 2 or, it can also be two, as shown in Figure 3 It can be adjusted according to actual design or production needs. For example, for the line CM mode, two radiators can also be used as shown in Figure 3 The two ends of the two radiators are arranged oppositely and spaced by a gap, and a symmetric feeding method is adopted at the mutually approaching ends. For example, the same feed source signal is fed into the mutually approaching ends of the two radiators respectively, and an effect similar to that of the antenna structure shown in Figure 2 can also be obtained. Correspondingly, for the line DM mode, one radiator can also be used as shown in Figure 2 Two feeding points are arranged at the middle position of the radiator and an anti-symmetric feeding method is adopted. For example, signals with the same amplitude and opposite phases are fed into the two symmetric feeding points on the radiator respectively, and an effect similar to that of the antenna structure shown in Figure 3 can also be obtained.

[0127] 3. Line CM-DM mode

[0128] The above Figure 2 and Figure 3 respectively show that when both ends of the radiator are open, different feeding methods are used to generate the line CM mode and the line DM mode respectively.

[0129] When the feeding form of the antenna adopts asymmetric feeding (the feeding point deviates from the middle position of the radiator, including edge feeding or offset feeding), or the grounding point of the radiator (the coupling point with the floor) is asymmetric (the grounding point deviates from the middle position of the radiator), the antenna can simultaneously generate the first resonance and the second resonance, corresponding to the line CM mode and the line DM mode respectively. For example, the first resonance corresponds to the line CM mode, and the current and electric field distributions are as shown in (b) of Figure 2 The second resonance corresponds to the line DM mode, and the current and electric field distributions are as shown in (b) of Figure 3

[0130] Figure 4 is a schematic diagram of another electronic device 10 provided by an embodiment of the present application.

[0131] As shown in Figure 4As shown, the conductive frame 11 of the electronic device 10 may include a first side 131 and a second side 132 that intersect at an angle, and the length of the first side 131 is greater than the length of the second side 132.

[0132] The second side 132 may have a first position 101 and a second position 102, and the frame 11 has slits at the first position 101 and the second position 102. The radiator 105 of the antenna 100 may include the conductive portion of the frame between the first position 101 and the second position 102.

[0133] In some embodiments, the first frame 105 is symmetric about the virtual axis of the second side 132, and the lengths of the second side 132 on both sides of the virtual axis are the same. Due to certain errors in engineering applications, when the ratio between the distances of the first position 101 and the second position 102 from the virtual axis is greater than or equal to 90% and less than or equal to 110%, it can be considered that the first frame 105 is symmetric about the virtual axis of the second side 132.

[0134] It should be understood that for an antenna, as the structure of the antenna is symmetric (for example, the radiator 105 is located at the center of the second side 132), the radiation characteristics of the antenna are improved (for example, bandwidth, radiation efficiency, etc.).

[0135] Figure 5 and Figure 6 is Figure 4 the simulation result diagram of the antenna 100 in the electronic device 10 shown. Among them, Figure 5 is Figure 4 the S-parameter simulation result of the antenna 100 in the electronic device 10 shown. Figure 6 is Figure 4 the simulation results of the system efficiency and radiation efficiency of the antenna 100 in the electronic device 10 shown.

[0136] As Figure 5 shown, when Figure 4 the antennas shown respectively adopt Figure 2 and Figure 3 the feeding methods shown, the line CM mode and the line DM mode can be generated respectively. When the antenna is in the line CM mode and the line DM mode, resonance can be generated near the target frequency band (for example, 2 GHz).

[0137] It should be understood that for the sake of simplicity of discussion, in this embodiment, only the cases of separately exciting the line CM mode and the line DM mode are taken as examples for illustration. Referring to the above embodiments, the line CM mode and the line DM mode can also be simultaneously excited by means of asymmetric feeding (the feeding point deviates from the middle position of the radiator, including edge feeding or offset feeding), and / or the grounding point of the radiator (the coupling point with the ground plane) is asymmetric (the grounding point deviates from the middle position of the radiator).

[0138] AsFigure 6 As shown, when the first border (radiator) is symmetric about the virtual axis of the second side (located at the center of the second side), at the resonance point (2 GHz), the radiation efficiency of the CM mode is -4.42 dB, the system efficiency is -4.47 dB, the radiation efficiency in the DM mode is -1.27 dB, and the system efficiency is -1.39 dB.

[0139] It should be understood that when the first border is located at the center of the second side, the transverse mode (with a proportion exceeding the longitudinal mode) can be excited, but the currents corresponding to the transverse mode will cancel each other out. Therefore, the system efficiency and radiation efficiency of the CM mode are relatively low.

[0140] For the DM mode, the radiation of the antenna in the DM mode is mainly generated by the radiator (the first border). When it is set at the center of the second side, the system efficiency and radiation efficiency are better than those of the CM mode.

[0141] Figure 7 It is a schematic diagram of an electronic device 10 provided by an embodiment of the present application.

[0142] As Figure 7 shown, the electronic device 10 includes a border 11, an antenna 200, a ground plane 300, and a controller 310.

[0143] Among them, the border 11 may include a first side 131 and a second side 132 that intersect at an angle, and the length of the first side 131 is greater than the length of the second side 132.

[0144] It should be understood that the technical solution provided by the embodiment of the present application can also be applied to foldable electronic devices. For the sake of simplicity of discussion, only an electronic device (non-foldable) including a single display screen is taken as an example for illustration. In a foldable electronic device, the above-mentioned first side 131 and second side 132 can be understood as the first side and the second side corresponding to the foldable electronic device in the folded state.

[0145] The second side 132 may have a first position 201 and a second position 202. The border 11 opens a first slot and a second slot at the first position 201 and the second position 202 respectively.

[0146] In some embodiments, the width of the slots opened at the first position 201 and the second position 202 is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The slots opened in the embodiment of the present application can all be within the above range. It should be understood that the width of the slot can be understood as the distance between the ends of the border on both sides of the slot.

[0147] The antenna 200 includes a radiator 210, a first feeding circuit 221, a second feeding circuit 222, and a tuning circuit 230.

[0148] The radiator 210 is the conductive part of the frame 11 at the first position 201 and the second position 202. The first end (the end close to the first position 201) and the second end (the end close to the second position 202) of the radiator 210 are open ends.

[0149] The radiator 210 includes a feeding point 220. A first feeding circuit 221 and a second feeding circuit 222 are coupled to the feeding point 220. The first feeding circuit 221 is used to transmit an electrical signal in a first frequency band. The second feeding circuit 222 is used to transmit an electrical signal in a second frequency band. The first frequency band is different from the second frequency band.

[0150] The first frequency band includes a satellite communication frequency band. In some embodiments, the first frequency band may include a transmission frequency band and / or a reception frequency band in satellite communication. For example, in the Tian Tong satellite system, the first frequency band may include 1980 MHz - 2010 MHz (transmission frequency band), 2170 MHz - 2200 MHz (reception frequency band). In the BeiDou satellite system, the first frequency band may include 1610 MHz - 1626.5 MHz (transmission frequency band), 2483.5 MHz - 2500 MHz (reception frequency band). Alternatively, it can also be applied to other satellite communication systems, and the embodiments of the present application do not limit this.

[0151] In some embodiments, when the antenna 200 operates in the Tian Tong satellite system (the operating frequency band of the antenna 200 includes at least part of the frequency bands in the Tian Tong satellite system), the electronic device 10 can perform voice communication through the antenna 200. In some embodiments, when the antenna 200 operates in the BeiDou satellite system (the operating frequency band of the antenna 200 includes at least part of the frequency bands in the BeiDou satellite system), the electronic device 10 can send or receive pictures or short messages through the antenna 200.

[0152] It should be understood that for the sake of brevity in the discussion, the satellite communication performed by the electronic device 10 described in the embodiments of the present application can be understood as that the electronic device 10 can use the antenna 200 to send pictures or short messages to or receive pictures or short messages from the satellite, or the electronic device 10 can use the antenna 200 to perform voice communication through the satellite.

[0153] In some embodiments, the second frequency band may include at least a portion of the frequency bands in near communication (NC), such as the WiFi band, the BT band, and the GPS band. Alternatively, the second frequency band may also include at least a portion of the frequency bands in a cellular network, such as at least a portion of the low band (LB) (698 MHz - 960 MHz), at least a portion of the mid-band (1710 MHz - 2170 MHz), at least a portion of the high band (2300 MHz - 2690 MHz), and at least a portion of sub 6G. Alternatively, the second frequency band may also be at least a portion of the frequency bands in ultra-wideband (UWB) technology.

[0154] For the sake of brevity of discussion, in the embodiments of the present application, only the example where the first frequency band includes the satellite communication band and the second frequency band includes the GPS band is used for illustration.

[0155] The radiator 210 may further include a connection point 231. The tuning circuit 230 is coupled between the ground plane 300 and the connection point 231.

[0156] In some embodiments, the tuning circuit 230 is a circuit including a switch. The switch can be used to switch different resistance values, capacitance values, or inductance values of electronic components coupled to the connection point 231 when switching different circuit states. Alternatively, the switch can also be in an open state, so that the electronic components are not coupled to the connection point 231. Alternatively, the switch can directly couple the ground plane 300 to the connection point, and no electronic components are provided between the ground plane 300 and the connection point.

[0157] The controller 310 is electrically connected to the tuning circuit 230. The controller 310 is used to switch the circuit state of the tuning circuit 230 to make the antenna 200 operate in the first frequency band or the second frequency band.

[0158] It should be understood that according to the technical solution provided by the embodiments of the present application, the controller 310 can switch the circuit state of the tuning circuit 230 to make the antenna 200 operate in the first frequency band or the second frequency band, realizing the switching between different communication systems, thereby improving the radiation performance of the antenna 200 in different communication systems.

[0159] Among them, the controller 310 is used to switch the circuit state of the tuning circuit 230, so that the antenna 200 operates in the first frequency band or the second frequency band. It can be understood that the equivalent resistance value, equivalent capacitance value or equivalent inductance value between the connection point 231 and the ground plane 300 is switched, so that the radiator 210 generates the first resonance and the second resonance respectively. The resonance point frequency of the first resonance is different from that of the second resonance. The resonance frequency band of the first resonance includes the first frequency band, and the resonance frequency band of the second resonance includes the second frequency band, so that the resonance frequency band of the resonance includes the first frequency band or the second frequency band.

[0160] Meanwhile, in the structure of the above antenna 200, the line DM mode of the radiator 210 can be excited. As can be seen from the above embodiments, when the radiator 210 is disposed on the second side 132, the radiation efficiency and system efficiency of the resonance generated by the antenna 200 in the line DM mode are relatively high. Since the gain of the antenna is related to the directivity and efficiency (radiation efficiency and system efficiency) of the antenna, when the efficiency (radiation efficiency and system efficiency) of the antenna is improved, the directivity remains unchanged, and the gain of the antenna can also be improved. Therefore, although when the electronic device 10 communicates in the first frequency band (satellite frequency band), the polarization characteristic of the radiation generated by the antenna 200 is similar to linear polarization, and there will be a loss of about 3 dB when receiving circularly polarized electromagnetic waves, but due to the good efficiency (radiation efficiency and system efficiency) of the antenna 200.

[0161] Moreover, when the user performs satellite navigation or communication, it is necessary to point the maximum radiation direction of the antenna to the satellite to achieve satellite pointing (establishing a communication connection with the satellite). In the technical solution provided by the embodiment of the present application, since the radiator 210 is located on the second side 132, the maximum radiation direction of the radiation pattern generated by the antenna 200 faces the top (for example, the y direction) of the electronic device 10, so that when the user uses the electronic device 10 to perform satellite navigation or communication in the first frequency band, there is no need to change the holding posture of the electronic device 10 to obtain a good user experience.

[0162] In some embodiments, when the resonance frequency bands of the first resonance and the second resonance generated by the radiator 210 both include the first frequency band and the second frequency band, the resonance point frequency of the first resonance is close to the first frequency band, and the resonance point frequency of the second resonance is close to the second resonance, so that the antenna 200 has better radiation characteristics (such as radiation efficiency) in both the first frequency band and the second frequency band.

[0163] In some embodiments, the frame 11 further includes a grounding point 241, and the grounding point 241 is located between the first position 201 and the second position 202. The frame 11 is coupled to the ground plane 300 at the grounding point 241.

[0164] In some embodiments, the ground point 241 may be located in the central region of the radiator 210. The central region includes the center of the radiator 210, and the lengths of the radiator 210 on both sides of the center are the same. The central region of the radiator 210 may be understood as the region within 5 mm from the center of the radiator 210.

[0165] It should be understood that the radiator 210 includes the ground point 241, and the radiator 210 can generate additional resonance by the line CM mode. When the radiator 210 can generate resonance by the line CM mode and the line DM mode simultaneously, the proportion of the line DM mode in the first frequency band (the resonance frequency band of the first resonance) can be increased, so that the antenna 200 mainly generates radiation by the line DM mode in the first frequency band (the resonance frequency band of the first resonance), so as to improve the radiation characteristics (such as radiation efficiency and system efficiency) of the antenna 200 in the first frequency band.

[0166] In some embodiments, the feeding point 220 and the connection point 231 are located between the first position 201 and the ground point 241.

[0167] In some embodiments, the length of the radiator 210 between the connection point 231 and the first position 201 is less than or equal to 5 mm.

[0168] It should be understood that the radiator 210 has a strong electric field at the open end (the first gap at the first position 201), and the tuning circuit 230 has a better tuning range in the region with a strong electric field.

[0169] In some embodiments, the antenna 200 further includes a ground piece. The first end of the ground piece is coupled to the ground point 241, and the second end of the ground piece 240 is coupled to the floor 300.

[0170] In some embodiments, the electronic device 10 includes the above-mentioned middle frame, and the middle frame includes the above-mentioned frame 11 and the middle plate. In some embodiments, the middle plate is electrically connected to the floor 300 at multiple points. In some embodiments, the middle plate can be regarded as a part of the floor 300. In some embodiments, the frame 11 and the middle plate are electrically connected by a connecting rib structure (such as a ground piece, not shown in the figure). The connecting rib structure (such as a ground piece, not shown in the figure) is connected between the frame and the middle plate and is integrally formed with the frame and the middle plate. For the sake of simplicity of discussion, the ground pieces described in the embodiments of the present application can be understood accordingly.

[0171] It should be understood that the ground piece, the frame 11 and the middle plate can be milled from the same metal piece, so as to reduce the error during assembly, thereby improving the radiation characteristics (such as bandwidth) of the antenna 200.

[0172] In some embodiments, the clearance L1 of the antenna 200 may be less than or equal to 1.5 mm, as Figure 8As shown. In some embodiments, the clearance L1 of the antenna 200 may be greater than or equal to 0.5 mm.

[0173] It should be understood that the clearance of the antenna 200 can be understood as the minimum value of the distance between the radiator 210 and the metal or electronic components close to the radiator 210. As the clearance of the antenna 200 decreases, the radiation performance (e.g., bandwidth) of the antenna 200 deteriorates.

[0174] In the electronic device 10, the clearance of the antenna 200 can be the distance L1 between the radiator 210 and an electronic component (e.g., the camera 250), or it can also be the distance L1 between the radiator 210 and the metal layer in the display screen (display module) 15, or it can also be the distance L1 between the radiator and the metal layer (not shown) in the PCB, which can be determined according to the actual layout of the produced or designed electronic device 10.

[0175] In some embodiments, the dimension L2 of the radiator 210 in the first direction is less than or equal to 3.5 mm and greater than or equal to 1.5 mm, as Figure 8 shown. Wherein, the first direction is the thickness direction of the electronic device 10 (e.g., the z direction).

[0176] It should be understood that when the thickness of the radiator 210 (e.g., the dimension L2 in the first direction) decreases, the radiation performance (e.g., bandwidth) of the antenna 200 deteriorates.

[0177] The technical solution provided by the embodiments of the present application can improve the radiation performance of the antenna 200 in different communication systems by switching between different communication systems when the clearance of the antenna 200 is small and the thickness of the radiator 210 is small.

[0178] For the sake of simplicity of discussion, in the embodiments of the present application, only the case where the frame 11 includes a conductor part 251 (e.g., aluminum) and an insulating part 252 (e.g., plastic) is taken as an example for illustration. In actual production or design, the frame 11 can also be a full-metal design, and the embodiments of the present application do not limit this.

[0179] In some embodiments, the controller 310 switches the tuning circuit 230 to be in the first circuit state or the second circuit state according to the working state of the electronic device 10, so that the antenna 200 operates in the first frequency band or the second frequency band.

[0180] When the tuning circuit 230 is in the first circuit state, the radiator 210 is used to generate a first resonance, and the resonance frequency band of the first resonance includes the first frequency band. When the tuning circuit 230 is in the second circuit state, the radiator 210 is used to generate a second resonance, and the resonance frequency band of the second resonance includes the second frequency band.

[0181] It should be understood that the circuit state of the tuning circuit 230 can be understood as the equivalent resistance value, equivalent capacitance value, or equivalent inductance value between the connection point 231 and the ground 300. The resonant point frequency of the resonance generated by the radiator 210 can be adjusted through different circuit states.

[0182] In some embodiments, the antenna 200 may further include a switch 240. The common port of the switch 240 is coupled to the feeding point 220, the first port of the switch 240 is coupled to the first feeding circuit 221, and the second port of the switch 240 is coupled to the second feeding circuit 222.

[0183] It should be understood that the switch 240 can switch the electrical signal fed into the radiator 210. The switch 240 can prevent crosstalk between the feeding circuits (for example, the electrical signal transmitted in the first feeding circuit 221 is fed into the second feeding circuit 222). In some embodiments, when the tuning circuit 230 is in the first circuit state, the common port of the switch 240 is electrically connected to the first port, and the first feeding circuit 221 feeds an electrical signal of the first frequency. When the tuning circuit 230 is in the second circuit state, the common port of the switch 240 is electrically connected to the second port, and the second feeding circuit 222 feeds an electrical signal of the second frequency.

[0184] In some embodiments, taking the first frequency band including the satellite communication frequency band and the second frequency band including the GPS frequency band as an example, the working states of the electronic device 10 may include the working states of location based services (LBS) centered around geographical location data and satellite communication.

[0185] In some embodiments, the working states of LBS may include at least one of the following: positioning off, continuous positioning - weak outdoor L1 signal, continuous positioning - strong outdoor L1 signal, continuous positioning - weak outdoor L5 signal, continuous positioning - strong outdoor L5 signal, continuous positioning - indoor positioning, continuous positioning - indoor - outdoor identification, single - point positioning - foreground, single - point positioning - background.

[0186] In some embodiments, the working states of satellite communication may include at least one of the following: satellite activation, satellite de - activation, satellite ready state, satellite transceiver state.

[0187] In some embodiments, the controller 310 can switch the circuit state of the tuning circuit 230 according to the first score and the second score. Wherein, the first score is the score corresponding to the working state of the electronic device 10 when the antenna 200 operates in the first frequency band. The second score is the score corresponding to the working state of the electronic device 10 when the antenna 200 operates in the second frequency band.

[0188] In the embodiments of the present application, the electronic device 10 may simultaneously have multiple different working states, and the first score and the second score may be scores corresponding to different working states of the controller 310. Exemplarily, different working states may correspond to different scores. In some embodiments, different scores correspond to different priorities, and the higher the score, the higher the priority.

[0189] In some embodiments, the electronic device 10 may preferentially be in a working state with a higher priority. Exemplarily, when the antenna 200 operates in the second frequency band, when the first score is greater than or equal to the second score, the controller 310 may switch the circuit state of the tuning circuit 230 to the first circuit state to make the antenna 200 operate in the first frequency band; when the first score is less than the second score, the antenna 200 may remain operating in the second frequency band. When the antenna 200 operates in the first frequency band and the first score is less than the second score, the controller 310 may switch the circuit state of the tuning circuit 230 to the second circuit state to make the antenna 200 operate in the second frequency band; when the first score is greater than or equal to the second score, the antenna 200 may remain operating in the first frequency band.

[0190] In some embodiments, the satellite communication system of the electronic device 10 may be in one or more working states, and the controller 310 may determine the first score based on the scores corresponding to the one or more working states in which the satellite communication system is located. Exemplarily, the controller 310 may determine the highest score among the scores corresponding to the one or more working states as the first score; the LBS system of the electronic device 10 may also be in one or more working states, and the controller 310 may determine the second score based on the scores corresponding to the one or more working states in which the LBS system is located. Exemplarily, the controller 310 may determine the highest score among the scores corresponding to the one or more working states as the second score.

[0191] Among them, the working states of the electronic device 10 and the scores of the working states may be preset in the electronic device 10 or obtained by the electronic device 10 in real time from a server stored therein. The embodiments of the present application do not limit this.

[0192] In some embodiments, the electronic device 10 further includes a modem 320, as Figure 9 shown. The first port of the modem 320 is electrically connected to the controller 310, and the second port of the modem 320 is electrically connected to the tuning circuit 230.

[0193] It should be understood that the modem 320 is used to process the electrical signals transmitted or received by the antenna, which can be understood as modulating the electrical signals transmitted by the feeding circuit, for example, up-converting, or modulating the electrical signals received by the antenna, for example, down-converting.

[0194] In some embodiments, the controller 310 sends a first signal to the modem 320, and the first signal is used to indicate the circuit state of the tuning circuit 230. The modem 320 switches the circuit state of the tuning circuit 230 according to the first signal.

[0195] In some embodiments, the electronic device 10 may further include a first chip 311. A first port of the first chip 311 is electrically connected to the controller 310, and a second port of the first chip 311 is electrically connected to the first feeding circuit 221.

[0196] It should be understood that the first chip 311 may be a satellite communication related chip, which is used to process signals related to the first frequency band and can modulate signals of the first frequency band. In some embodiments, the first chip 311 may also send relevant information about the current satellite communication to the controller 310, such as satellite activation, satellite deactivation, satellite in a ready state, satellite in a transceiver state, satellite communication frequency band, etc.

[0197] In some embodiments, the electronic device 10 may further include a second chip 312. A first port of the second chip 312 is electrically connected to the controller 310, and a second port of the second chip 312 is electrically connected to the second feeding circuit 222.

[0198] It should be understood that the second chip 312 may be an NC related chip, which is used to process signals related to the second frequency band and can modulate signals of the second frequency band. In some embodiments, the second chip 312 may also send relevant information about the current NC to the controller 310, such as positioning off, continuous positioning - weak L1 signal outdoors, continuous positioning - strong L1 signal outdoors, continuous positioning - weak L5 signal outdoors, continuous positioning - strong L5 signal outdoors, continuous positioning - indoor positioning, continuous positioning - indoor / outdoor identification, single - point positioning - foreground, single - point positioning - background, etc.

[0199] In some embodiments, the controller 310 may be an application processor (AP).

[0200] It should be understood that the functions implemented by the controller 310 in the above embodiments can all be implemented by a module / process in the AP.

[0201] In some embodiments, the electronic device 10 may further include a system on chip (SoC). The SoC may include at least two chips described in the above embodiments. For example, the SoC includes an AP and the first chip 311. The AP and the first chip 311 are integrated in the same chip, reducing the space required for layout.

[0202] It should be understood that in the embodiments of the present application, the chips integrated in the SoC are not limited and can be adjusted according to actual production or design.

[0203] In some embodiments, the controller may include a control module 401, as Figure 10 shown.

[0204] It should be understood that the control module 401 can be used to monitor the communication situation between the first chip 311 and the second chip 312.

[0205] In some embodiments, when the control module 401 monitors that the first chip 311 is started (in position / reset), the antenna 200 can still operate in the second frequency band, and the electronic device 10 can communicate in the second frequency band.

[0206] In some embodiments, when the control module 401 monitors that the first chip 311 is in the startup process, the control module 401 makes a decision and can determine the first score and the second score in the above embodiments. When the first score is greater than the second score, the control module 401 sends a first signal to the modem 320. The first signal is used to indicate that the tuning circuit is in the first circuit state, and the operating frequency band of the antenna 200 is switched to the first frequency band. The modem 320 controls the tuning circuit to be in the first circuit state according to the first signal, and the operating frequency band of the antenna 200 is switched to the first frequency band.

[0207] In some embodiments, when the call module 402 in the controller monitors that the first chip 311 is ready to transmit and receive signals, it sends a second signal to the modem 320. The second signal is used to indicate disconnecting the switch on the circuit related to the cellular network.

[0208] In some embodiments, when the second chip 312 monitors that the first chip 311 is ready to transmit and receive signals, it controls the second feeding circuit to be in a path isolation state (to prevent first - frequency - band signal crosstalk and damage electronic components on the circuit).

[0209] In some embodiments, when the call module 402 in the controller monitors that the first chip 311 has completed transmitting and receiving signals, it sends a third signal to the modem 320. The third signal is used to indicate starting the switch on the circuit related to the cellular network, and the electronic device can communicate through the cellular network.

[0210] In some embodiments, when the control module 401 monitors that the first chip 311 has completed transmitting and receiving signals, the control module 401 sends a fourth signal to the modem 320. The fourth signal is used to indicate that the tuning circuit is in the second circuit state, and the operating frequency band of the antenna 200 is switched to the second frequency band. The modem 320 controls the tuning circuit to be in the second circuit state according to the second signal, and the operating frequency band of the antenna 200 is switched to the second frequency band.

[0211] Figure 11 It is a schematic diagram of a switching method 400 for an antenna provided by an embodiment of the present application.

[0212] As Figure 11 shown, the switching method 400 includes the following steps:

[0213] S410, the AP receives the first information, and the first information is used to indicate the start (in-position / reset) of the first chip.

[0214] In some embodiments, the control module in the AP receives the first information sent by the first chip. In some embodiments, in this step, the antenna can still operate in the second frequency band, and the electronic device can communicate in the second frequency band.

[0215] In some embodiments, before the first chip starts, it can be default that the antenna operates in the second frequency band, and the electronic device communicates in the second frequency band.

[0216] S420, the AP sends the second information to the modem, and the second information is used to indicate the modem to switch the tuning circuit to the first circuit state.

[0217] In some embodiments, the control module in the AP makes a decision to determine the first score and the second score in the above embodiments. When the first score is greater than the second score, the AP sends the second information to the modem.

[0218] In some embodiments, the modem controls the tuning circuit to be in the first circuit state according to the second information, the operating frequency band of the antenna 200 is switched to the first frequency band, and the electronic device can communicate in the first frequency band.

[0219] S430, the AP receives the third information, and the third information is used to indicate that the first chip has completed signal transceiver.

[0220] In some embodiments, the control module in the AP receives the third information sent by the first chip.

[0221] In some embodiments, before the first chip performs signal transceiver, the switching method 400 further includes: the AP (for example, the call module) sends the fifth information to the modem, and the fifth signal is used to indicate the modem to disconnect the switch on the circuit related to the cellular network. The modem disconnects the switch on the circuit related to the cellular network according to the fifth information.

[0222] In some embodiments, before the first chip performs signal transceiver, the switching method 400 further includes: the second chip controls the second feeding circuit to be in a path isolation state (to prevent the signal in the first frequency band from crosstalking and damaging the electronic components on the circuit) (for example, disconnecting the active device in the second feeding circuit).

[0223] S440, the AP sends a fourth piece of information to the modem, and the fourth piece of information is used to instruct the modem to switch the tuning circuit to the second circuit state.

[0224] In some embodiments, the modem controls the tuning circuit to be in the second circuit state according to the fourth piece of information, the operating frequency band of the antenna is switched to the second frequency band, and the electronic device can communicate in the second frequency band.

[0225] In some embodiments, after the first chip finishes transceiver signals, the switching method 400 further includes: the AP (for example, the call module) sends a sixth piece of information to the modem, and the sixth signal is used to instruct the modem to turn on the switch on the circuit related to the cellular network. The modem turns on the switch on the circuit related to the cellular network according to the sixth piece of information, and the electronic device can communicate through the cellular network.

[0226] As described above, the above are only the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, and all should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device, characterized in that, comprising: a floor; a frame, including a first side and a second side intersecting at an angle, the length of the first side being greater than that of the second side, the second side including a first position and a second position, and the frame having a first gap and a second gap opened at the first position and the second position respectively; an antenna, including: a radiator, the radiator being the conductive part of the frame between the first position and the second position, a first feeding circuit and a second feeding circuit, the radiator including a feeding point, the first feeding circuit and the second feeding circuit being coupled to the feeding point, the first feeding circuit being used for transmitting an electrical signal of a first frequency band, and the second feeding circuit being used for transmitting an electrical signal of a second frequency band; a tuning circuit, the radiator further including a connection point, and the tuning circuit being coupled between the floor and the connection point; a controller, the controller being electrically connected to the tuning circuit, and the controller being used for switching the circuit state of the tuning circuit to make the antenna operate in the first frequency band or the second frequency band; wherein, the first frequency band includes a satellite communication frequency band, and the second frequency band includes at least part of the frequency bands in short-range communication or at least part of the frequency bands in a cellular network.

2. The electronic device according to claim 1, characterized in that, the frame further includes a grounding point, the grounding point being located between the first position and the second position, and the frame being coupled to the floor at the grounding point.

3. The electronic device according to claim 2, characterized in that, the antenna further includes a grounding member, a first end of the grounding member being coupled to the grounding point, a second end of the grounding member being coupled to the floor, and the grounding member being integrally formed with the frame.

4. The electronic device according to claim 2, characterized in that, the feeding point and the connection point are located between the first position and the grounding point.

5. The electronic device according to any one of claims 1 to 3, characterized in that, the antenna further includes a switch; wherein, a common port of the switch is coupled to the feeding point, a first port of the switch is coupled to the first feeding circuit, and a second port of the switch is coupled to the second feeding circuit.

6. The electronic device according to any one of claims 1 to 5, characterized in that, the clearance of the antenna is less than or equal to 1.5 mm.

7. The electronic device according to any one of claims 1 to 6, characterized in that, the clearance of the antenna is greater than or equal to 0.5 mm.

8. The electronic device according to any one of claims 1 to 7, characterized in that, the size of the radiator in a first direction is less than or equal to 3.5 mm and greater than or equal to 1.5 mm, and the first direction is the thickness direction of the electronic device.

9. The electronic device according to any one of claims 1 to 8, characterized in that, the controller for switching the antenna to operate in the first frequency band or the second frequency band includes: the controller switches the tuning circuit to a first circuit state or a second circuit state according to the working state of the electronic device; Based on the tuning circuit being in the first circuit state, the radiator is used to generate a first resonance, and the resonance frequency band of the first resonance includes the first frequency band; Based on the tuning circuit being in the second circuit state, the radiator is used to generate a second resonance, and the resonance frequency band of the second resonance includes the second frequency band.

10. The electronic device according to claim 9, wherein, the controller switches the tuning circuit to be in the first circuit state or the second circuit state according to the working state of the electronic device, including: when the first score is greater than or equal to the second score, the controller switches the tuning circuit to be in the first circuit state, the first score is the score corresponding to the working state of the electronic device when the antenna operates in the first frequency band, and the second score is the score corresponding to the working state of the electronic device when the antenna operates in the second frequency band; when the first score is less than the second score, the controller switches the tuning circuit to be in the second circuit state.

11. The electronic device according to claim 9 or 10, wherein, the working state includes at least one of the following: positioning off, continuous positioning - outdoor L1 weak signal, continuous positioning - outdoor L1 strong signal, continuous positioning - outdoor L5 weak signal, continuous positioning - outdoor L5 strong signal, continuous positioning - indoor positioning, continuous positioning - indoor / outdoor identification, single - point positioning - foreground, single - point positioning - background, satellite activation, satellite de - activation, satellite ready state, satellite transceiver state.

12. The electronic device according to any one of claims 9 to 11, wherein, the electronic device includes a modem, a first port of the modem is electrically connected to the controller, and a second port of the modem is electrically connected to the tuning circuit.

13. The electronic device according to claim 12, wherein, the controller switches the tuning circuit to be in the first circuit state or the second circuit state according to the working state of the electronic device, including: the controller sends a first signal to the modem, and the first signal is used to indicate the circuit state of the tuning circuit; the modem switches the circuit state of the tuning circuit according to the first signal.

14. The electronic device according to claim 13, wherein, at the resonance point of the first resonance, the currents on the radiator are in the same direction.

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