Electronic device

Abstract

The invention provides electronic equipment. The electronic equipment comprises a frame, a first radiator and a first feed source, the first radiator is formed by a part of the frame, or the first radiator is fixed on the inner side of the frame, and the first radiator is used for supporting satellite frequency band communication and cellular medium-high frequency band communication. The satellite frequency band comprises one or more of a Beidou short message frequency band, a satellite communication frequency band and a star network frequency band. The first radiator comprises a first end portion, the first radiator is not provided with a grounding point, the first radiator is provided with a first feeding point, the distance between the first feeding point and the first end portion is smaller than or equal to one fourth of the length of the first radiator, and the first feed source is electrically connected with the first feeding point. The first radiator can be used for supporting satellite frequency band communication and cellular medium-high frequency band communication, and the antenna performance is good.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and in particular to an electronic device. Background Technology

[0002] With the continuous development of mobile phones, more and more phones are equipped with satellite communication technology to meet user needs. Because mobile phones need their satellite antenna's radiation pattern to align with the satellite for satellite communication, the satellite antenna is usually located at the top of the phone to meet these requirements. However, the top of current mobile phones has limited space, and placing the satellite antenna also encroaches on the space for other antennas, such as cellular antennas, resulting in smaller sizes for both satellite and cellular antennas, thus affecting antenna performance. Summary of the Invention

[0003] This application provides an electronic device that offers good performance for both satellite and cellular antennas.

[0004] This application provides an electronic device. The electronic device includes a frame, a first radiator, and a first feed source. The first radiator is formed from a portion of the frame, or the first radiator is fixed to the inner side of the frame. The first radiator supports satellite frequency band communication and cellular mid-to-high frequency band communication. The satellite frequency band includes one or more of the BeiDou short message frequency band, satellite communication frequency band, and StarNet frequency band. The first radiator includes a first end portion, has no grounding point, and has a first feed point. The distance between the first feed point and the first end portion is less than or equal to one-quarter of the length of the first radiator. The first feed source is electrically connected to the first feed point.

[0005] Understandably, satellite antennas are typically placed on the top of electronic devices for satellite alignment. However, the limited space at the top of electronic devices means that the satellite antenna encroaches on the layout space of the cellular antenna, resulting in smaller sizes for both and impacting antenna performance. Furthermore, spatial coupling between the satellite and cellular antennas also affects performance. In this embodiment, the first radiator can simultaneously support both satellite and cellular communication. This means the satellite and cellular antennas can share the same radiator for communication, achieving a unified satellite and cellular antenna system. This effectively saves top space, meets other layout requirements, improves performance, and enhances the user experience.

[0006] Secondly, unlike conventional satellite antennas which have a grounding point, satellite antennas require additional adjustment circuitry to meet their high efficiency requirements and thus improve antenna efficiency for satellite frequency band communication. In this embodiment, however, the first radiator is configured as a suspended radiator without a grounding point, resulting in higher antenna efficiency. This allows for both meeting satellite communication requirements and miniaturization of the antenna device, saving internal space in electronic equipment.

[0007] Furthermore, unlike conventional satellite antennas which require symmetrical placement at the top of the electronic device to meet performance requirements (such as high antenna efficiency and wide beamwidth), grounding at the middle, and adjusting the antenna aperture with a first circuit near the feed point and a second circuit at the end of the antenna facing away from the feed point to improve efficiency, this traditional antenna design necessitates a circuit board layout with adjustment circuits and feed sources at corresponding antenna locations. This results in a dispersed circuit board size and increased internal space usage. In contrast, this embodiment uses a suspended antenna radiator, and the first feed source can be located at the end of the radiator (the first end in this embodiment). This design achieves high antenna efficiency and circular polarization gain, along with a wide beamwidth, meeting the performance requirements of a satellite antenna. Additionally, the first feed source, first adjustment circuit, and second adjustment circuit can all be positioned close to the same end of the first radiator, allowing for a centralized layout on the circuit board. This effectively reduces the circuit board size and saves internal space.

[0008] In one possible implementation, the electronic device further includes a first matching circuit and a first adjustment circuit. The first matching circuit is electrically connected between the first feed source and the first feed point. The electronic device also includes a first connection point and a second connection point. The first connection point is electrically connected between the first matching circuit and the first feed point, and the second connection point is electrically connected between the first matching circuit and the first feed source. The first adjustment circuit includes a first switching assembly and at least one first selection branch. One end of the first selection branch is electrically connected to the first connection point via the first switching assembly, and the other end is electrically connected to the second connection point. The first adjustment circuit is configured to selectively connect any one or more first selection branches in parallel with the first matching circuit via the first switching assembly, or to disconnect all first selection branches from the first connection point via the first switching assembly, thereby switching the operating frequency band of the first radiator.

[0009] Understandably, compared to conventional antenna devices that adjust the radiator's aperture to regulate its operating frequency band by electrically connecting a matching circuit near the feed point of the radiator and grounding the matching circuit, frequency band switching via antenna aperture adjustment can only switch between adjacent frequency bands, i.e., only small-span frequency band switching. This allows for fine-tuning of the radiator's resonant frequency, preventing the radiator from simultaneously covering both the cellular communication MHB main band and satellite bands. Even if adjusting the antenna aperture allows the radiator to operate in both the cellular communication MHB main band and satellite bands, the large span of frequency band switching would cause a sharp drop in antenna efficiency, failing to meet the performance requirements of satellite antennas.

[0010] The antenna device in this embodiment may further include a first matching circuit and a first adjustment circuit. The first matching circuit may be connected in series between the first feed point and the first feed source of the first radiator. The first adjustment circuit may be connected in parallel with the first matching circuit. The first adjustment circuit can control a first switching component to form a parallel matching between one or more first selection branches and the first matching circuit, thereby adjusting the resident matching impedance of the first radiator. This allows the first radiator to switch operating frequency bands with both small and large spans, enabling it to simultaneously cover the cellular communication MHB main band and satellite bands. Furthermore, by switching the resident matching impedance to switch operating frequency bands, even with large-span switching, the first radiator maintains high antenna efficiency, thus meeting the performance requirements of satellite antennas and providing a better user experience.

[0011] In one possible implementation, the first regulating circuit includes n first selection branches and n second matching circuits. The first switching assembly includes n first switches. The n second matching circuits are correspondingly located on the n first selection branches. One end of each of the n first selection branches is electrically connected to a first connection point via the n first switches, and the other end of each branch is electrically connected to a second connection point. The impedance values ​​of the n second matching circuits are not identical. Here, n is an integer greater than or equal to. In this way, the electronic device can switch the first radiator to different operating frequency bands by connecting / disconnecting different first switches, meeting different user needs.

[0012] In one possible implementation, the first regulating circuit further includes a second switching assembly and at least one second selection branch. One end of the second selection branch is electrically connected to the first connection point via the second switching assembly, and the other end is grounded. The first regulating circuit is also configured to selectively connect any one or more second selection branches to the first connection point via the second switching assembly, or to disconnect all second selection branches from the first connection point via the second switching assembly, thereby switching the operating frequency band of the first radiator. In this way, by cooperating with the first and second switching assemblies, the first radiator can be switched to multiple different operating frequency bands to meet different user needs.

[0013] In one possible implementation, the electronic device further includes a second regulation circuit, which includes a third switching assembly and at least one third selection branch. The electronic device also includes a third connection point located at the first radiator. One end of the third selection branch is electrically connected to the third connection point, and the other end is grounded via the third switching assembly. The second regulation circuit is configured to selectively ground any one or more third selection branches via the third switching assembly, or to disconnect all third selection branches from the grounding point via the third switching assembly, thereby switching the operating frequency band of the first radiator.

[0014] It is understood that the antenna device in this embodiment uses a first adjustment circuit and a second adjustment circuit to switch the operating frequency band of the first radiator. This allows the first radiator to operate in multiple frequency bands while having fewer first selection branches in the first adjustment circuit and fewer third selection branches in the second adjustment circuit. This avoids coupling caused by a large number of selection branches in the same adjustment circuit being too close to each other, which would affect the antenna performance of the first radiator.

[0015] In one possible implementation, the distance between the third connection point and the first feed point is less than or equal to half the length of the first radiator. This allows the second adjustment circuit to adjust the antenna aperture of the first radiator, thereby fine-tuning the operating frequency band of the first radiator.

[0016] In one possible implementation, the frame includes a first long side and a first short side arranged adjacent to each other. The first short side is located at the top of the electronic device, and the first radiator is formed on the first short side, or the first radiator is fixed to the inside of the first short side. In this way, the first radiator can be located at the top of the electronic device, which facilitates satellite alignment and improves the user experience of satellite frequency band communication when the first radiator is used to support satellite frequency band communication.

[0017] In one possible implementation, the frame includes a first long side and a first short side arranged adjacent to each other. The first short side is located at the top of the electronic device. A first radiator is formed on the first short side, or the first radiator is fixed to the inside of the first short side. The electronic device also includes a second radiator, which is formed from a portion of the first long side, or the first radiator is fixed to the inside of the first long side. The electronic device also includes a second adjustment circuit, which includes a third switching assembly and at least one third selection branch. The electronic device also includes a third connection point located on the second radiator. One end of the third selection branch is electrically connected to the third connection point, and the other end is grounded through the third switching assembly. The second adjustment circuit is configured to selectively ground any one or more third selection branches through the third switching assembly, or to disconnect all third selection branches from the grounding point through the third switching assembly, thereby switching the operating frequency band of the first radiator. In this way, the second radiator can also serve as a parasitic extension of the first radiator, improving the antenna performance of the antenna device.

[0018] In one possible implementation, the first short side includes a first gap and a second gap spaced apart. The portion of the first short side located between the first gap and the second gap constitutes a first radiator. The distance from the first gap to the midpoint of the first short side is not equal to the distance from the second gap to the midpoint of the first short side. Thus, the first gap and the second gap can be asymmetrically positioned about the midpoint of the first short side, allowing for flexible placement to accommodate different component layouts within the electronic device.

[0019] In one possible implementation, the first radiator further includes a second end, with the first end positioned closer to the first gap than the second end. The distance between the first gap and the midpoint of the first short side is greater than the distance between the second gap and the midpoint of the first short side. In this way, the first feed source, the first adjustment circuit, and the second adjustment circuit can all be positioned close to the same end of the first radiator, allowing the circuit board to centrally arrange these components, thereby effectively reducing the size of the circuit board and saving internal space in the electronic device.

[0020] In one possible implementation, the first short side further includes a third slot located on the side of the second slot facing away from the first slot. The portion of the first short side between the third slot and the second slot constitutes a third radiator. Thus, the first short side of the electronic device can also have a third radiator. By placing multiple radiators within the limited space at the top of the electronic device, the antenna performance of the electronic device can be effectively improved, meeting user needs.

[0021] In one possible implementation, the electronic device further includes a second feed source, and the first radiator further includes a second feed point, which is spaced apart from the first feed point. The second feed source is electrically connected to the second feed point. This allows for sharding of the first radiator to improve antenna performance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0023] Figure 1 This is a schematic diagram of the structure of the electronic device provided in some embodiments of this application;

[0024] Figure 2 yes Figure 1 The diagram shows a partially exploded view of the electronic device in some embodiments.

[0025] Figure 3 yes Figure 1 The diagram shows a partial structural schematic of the electronic device.

[0026] Figure 4 yes Figure 3 A partially enlarged structural diagram of the structure shown;

[0027] Figure 5 yes Figure 4 The circuit topology diagram of the first matching circuit shown in some embodiments;

[0028] Figure 6a yes Figure 4 The circuit topology diagram of the antenna device shown in some embodiments;

[0029] Figure 6b yes Figure 4 The circuit topology diagram of the antenna device shown in some embodiments;

[0030] Figure 7 yes Figure 4 The diagram shows the antenna efficiency of the first radiator operating in the cellular communication MHB master band.

[0031] Figure 8 yes Figure 4 The system efficiency and upper hemisphere percentage of the first radiator operating in the cellular communication MHB master band are shown.

[0032] Figure 9 yes Figure 4 The diagram shows the antenna efficiency of the first radiator operating in the BeiDou short message band.

[0033] Figure 10 yes Figure 4 The diagram shows the antenna efficiency of the first radiator operating in the satellite communication band.

[0034] Figure 11 yes Figure 4 The diagram shows the circular polarization gain pattern of the first radiator when it operates in the satellite communication band.

[0035] Figure 12 yes Figure 4 The diagram shows the circular polarization gain pattern of the first radiator operating in the StarNet band.

[0036] Figure 13 yes Figure 4 The diagram shown is a structural schematic of some embodiments of the structure.

[0037] Figure 14 yes Figure 13 The diagram shown is a structural schematic of some embodiments of the structure.

[0038] Figure 15 yes Figure 14 The diagram shown is a structural schematic of some embodiments of the structure.

[0039] Figure 16 yes Figure 4 The diagram shown is a structural schematic of some embodiments of the structure.

[0040] Figure 17 yes Figure 4 The diagram shown is a structural schematic of some embodiments of the structure.

[0041] Figure 18 yes Figure 4 The diagram shown is a structural schematic of some embodiments of the structure.

[0042] Figure 19 yes Figure 4 The circuit topology diagram of the antenna device shown in some embodiments is illustrated. Detailed Implementation

[0043] The embodiments of this application are described below with reference to the accompanying drawings.

[0044] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "inner," and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. "Multiple" refers to at least two.

[0045] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0046] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0047] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in another embodiment" appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0048] Connection / linking: can refer to a mechanical or physical connection, that is, A and B are connected or linked. It can mean that there are fastened components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0049] Coupling can be understood as direct coupling and / or indirect coupling. "Coupled connection" can be understood as a direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection," which can be understood as physical contact and electrical conduction between components; it can also be understood as the form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Indirect coupling" can be understood as electrical conduction between two conductors through a gap / non-contact method. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gaps between two conductive parts.

[0050] Lumped element / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For signals, the characteristics of the components remain constant at all times, regardless of frequency.

[0051] Distributed elements / devices: Unlike lumped elements, if the size of an element is similar to or larger than the wavelength of the circuit's operating frequency, then when a signal passes through the element, the characteristics of each point on the element will vary due to the signal change. In this case, the element as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed element.

[0052] Capacitor: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitor elements; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive components separated by a certain gap.

[0053] Inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductor elements; distributed inductance (or distributed inductance) refers to the equivalent inductance formed through a conductive element of a certain length, such as the equivalent inductance formed by a conductor due to bending or rotation.

[0054] A radiator, or antenna stub, is a device in an antenna used to receive / transmit electromagnetic wave radiation. In some cases, the term "antenna" is narrowly defined as a radiator, which converts guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, for radiating and receiving radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via a feed line, where it is converted into electromagnetic wave energy of a specific polarization and radiated in the desired direction. The receiving radiator converts electromagnetic wave energy of a specific polarization from a specific direction in space back into modulated high-frequency current energy, which is then transmitted to the receiver input via a feed line.

[0055] Radiators (or antenna stubs) may include conductors with specific shapes and sizes, such as wires or sheets, and this application does not limit the specific shape. In one embodiment, a wire radiator may be simply referred to as a wire antenna. In one embodiment, a wire radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, a wire radiator may be implemented by a support conductor, and may also be referred to as a support antenna. In one embodiment, the wire diameter (e.g., including thickness and width) of the wire radiator, or the radiator of the wire antenna, is much smaller than the wavelength (e.g., the wavelength of the medium) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the wavelength of the medium) (e.g., a length of approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of wire antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFAs). For example, in a dipole antenna, each dipole antenna typically includes two radiating stubs, each fed from the feed end of the radiating stub by a feed section. For example, an inverted-F antenna (IFA) can be considered as a monopole antenna with an added ground path. An IFA antenna has one feed point and one ground point, and is called an inverted-F antenna because its side view is inverted-F shaped. In one embodiment, the sheet radiator may include a microstrip antenna or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA). In one embodiment, the sheet radiator may be implemented using a planar conductor (e.g., a conductive sheet or conductive coating). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet. In one embodiment, the sheet radiator may include a conductive coating, such as silver paste. The shape of the sheet radiator includes circular, rectangular, and annular shapes, and this application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a ground plane, wherein the dielectric substrate is disposed between the radiator and the ground plane.

[0056] Radiators (or antenna stubs) may also include slots or gaps formed on a conductor, for example, closed or semi-closed slots or gaps formed on a grounded conductor surface. In one embodiment, a slotted or slit radiator may be simply referred to as a slot antenna or a gap antenna. In one embodiment, the radial dimension (e.g., including width) of the slot or gap of the slot antenna / gap antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), while the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., a length of approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or gap may be simply referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or gap (e.g., an opening added to a closed slot or gap) may be simply referred to as an open slot antenna. In some embodiments, the gap shape is elongated. In some embodiments, the length of the gap is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the gap is approximately an integer multiple of a wavelength (e.g., one dielectric wavelength). In some embodiments, the slot can be fed by transmission lines connected across one or both sides, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a conductive frame grounded at both ends, also known as a frame antenna; in this embodiment, the slot antenna or gap antenna can be viewed as including a linear radiator, the linear radiator being spaced apart from the ground and grounded at both ends, thereby forming a closed or semi-closed slot or gap. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a support conductor grounded at both ends, also known as a support antenna.

[0057] A feed circuit is a combination of all circuits used for receiving and transmitting radio frequency (RF) signals. A feed circuit can also be called a feed source. A feed circuit can include a transceiver and an RF front-end. In some narrower senses, "feed circuit" refers to an RF chip (RFIC), which can be considered to include both the RF front-end chip and the transceiver. The feed circuit has the function of converting radio waves (e.g., RF signals) into electrical signals (e.g., digital signals). It is generally considered part of the RF component.

[0058] In some embodiments, the electronic device may also include a test socket (or, RF socket or RF test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the RF front-end circuitry or the radiator of the antenna. The RF front-end circuitry can be considered as the circuitry coupled between the test socket and the transceiver.

[0059] In some embodiments, the radio frequency front-end circuit can be integrated into a radio frequency front-end chip in an electronic device, or the radio frequency front-end circuit and the transceiver can be integrated into a radio frequency chip in an electronic device.

[0060] The grounding / feeding structure may include connectors, such as metal springs, and the radiator is coupled to the ground / feeding circuit via the grounding structure. In some embodiments, the feeding structure may include a transmission line / feeding wire, and the grounding structure may include a grounding wire.

[0061] A feed line, also called a transmission line, is the connection line between the antenna transceiver and the radiator. Transmission lines can transmit current waves or electromagnetic waves directly, depending on the frequency and type. The connection point on the radiator where the transmission line connects is usually called the feed point. Transmission lines include conductive transmission lines, coaxial transmission lines, waveguides, and microstrip lines. Depending on their implementation, transmission lines can be mounted on a support antenna or a glass antenna. Depending on the carrier, transmission lines can be made of LCP (Liquid Crystal Polymer), FPC (Flexible Printed Circuit), or PCB (Printed Circuit Board).

[0062] Ground / Plug: This can broadly refer to at least a portion of any grounding layer, ground plane, or grounding metal layer within an electronic device (such as a mobile phone), or at least a portion of any combination of the aforementioned grounding layers, ground planes, or grounding components. "Ground / Plug" can be used for grounding components within an electronic device. In one embodiment, "Ground / Plug" may include any one or more of the following: a grounding layer of a circuit board of an electronic device, a ground plane formed by the frame of the electronic device, a grounding metal layer formed by a thin metal film beneath the screen, a conductive grounding layer of a battery, and conductive or metallic components electrically connected to the aforementioned grounding layer / ground plane / metal layer. In one embodiment, the circuit board may be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric or insulating layers such as glass fiber or polymers. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a trace layer, with the trace layer and grounding layer electrically connected via vias. In one embodiment, components such as display 120, touch screen, input buttons, transmitter, processor, memory, battery 140, charging circuit, system-on-chip (SoC) architecture, etc., may be mounted on or connected to the circuit board; or electrically connected to the trace layers and / or ground layers in the circuit board. For example, an RF source is disposed on a trace layer.

[0063] Any of the aforementioned grounding layers, ground planes, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material may be any of the following: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate and tin-plated copper, graphite-impregnated cloth, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. Those skilled in the art will understand that grounding layers / ground planes / grounding metal layers may also be made of other conductive materials.

[0064] Grounding: refers to coupling with the aforementioned ground / floor via a grounding structure and / or grounding circuit. In one embodiment, grounding can be achieved through physical grounding, such as through a structural component of the mid-frame to achieve physical grounding at a specific location on the frame (or, physical ground). In another embodiment, grounding can be achieved through device grounding, such as through devices like capacitors / inductors / resistors connected in series or parallel (or, device ground).

[0065] 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 resonant frequency can be a frequency range where the return loss characteristic is less than -6dB. The point of strongest resonance can be called the resonant point, and the frequency corresponding to the resonant point is the center frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, when the antenna / radiator in this application generates "first / second...resonance," the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to a specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0066] Resonant frequency band: The range of resonant frequencies is the resonant frequency band. The return loss characteristics at any frequency point within the resonant frequency band can be less than -6dB or -5dB.

[0067] Communication / Operating Frequency Band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna supporting the B40 band operates within the frequency range of 2300MHz to 2400MHz, or in other words, its operating frequency band includes the B40 band. The frequency range that meets the specifications can be considered the antenna's operating frequency band. The width of the operating frequency band is called the operating bandwidth. The operating bandwidth of an omnidirectional antenna may reach 3-5% of the center frequency. The operating bandwidth of a directional antenna may reach 5-10% of the center frequency. Bandwidth can be considered as a frequency range on both sides of the center frequency (e.g., the resonant frequency of a dipole), where the antenna characteristics are within the acceptable range of the center frequency.

[0068] The resonant frequency band and the operating frequency band can be the same or can partially overlap. In one embodiment, one or more resonant frequency bands of the antenna can cover one or more operating frequency bands of the antenna.

[0069] End / Point: The term "end / point" in the context of the antenna radiator's first end / second end / feed end / ground end / feed point / ground point / connection point should not be narrowly interpreted as necessarily being a point or end physically disconnected from other radiators. It can also be considered as a point or segment on a continuous radiator. In one embodiment, "end / point" can include a connection / coupling region on the antenna radiator that is coupled to other conductive structures. For example, a feed end / feed point can be a coupling region on the antenna radiator that is coupled to a feed structure (e.g., a region facing a part of the feed structure). Similarly, a ground end / ground point can be a connection / coupling region on the antenna radiator that is coupled to a ground structure.

[0070] Open terminal, closed terminal: In some embodiments, open terminal and closed terminal are, for example, relative to whether or not they are grounded; the closed terminal is grounded, and the open terminal is not grounded. In some embodiments, open terminal and closed terminal are, for example, relative to other conductors; the closed terminal is electrically connected to other conductors, and the open terminal is not electrically connected to other conductors. In one embodiment, the open terminal may also be referred to as a floating terminal, free terminal, open terminal, or open-circuit terminal. In one embodiment, the closed terminal may also be referred to as a ground terminal or short-circuit terminal. It should be understood that in some embodiments, other conductors can be coupled through the open terminal to transfer coupled energy (which can be understood as transferring current).

[0071] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution. A closed end or ground end can be understood as a point of high current or low electric field on a radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through a closed end can maintain the current distribution characteristics of the point of high current / low electric field. In one embodiment, opening a slit at or near the closed end (e.g., filling the slit with insulating material) can maintain the current distribution characteristics of the point of high current / low electric field.

[0072] In some embodiments, the understanding of "open terminal" can also be from the perspective of current distribution. An open terminal or a floating terminal can be understood as a point with a small current or a point with a large electric field on the radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through an open terminal can maintain the current distribution characteristics of the point with a small current or a large electric field.

[0073] It should be understood that when an electronic device (e.g., capacitor, inductor, etc.) is coupled at the radiator end of a gap (which, from the perspective of the radiator's structure, is similar to the radiator at the opening of an open or floating end), the radiator end can be a point with a large current / small electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0074] It is understood that the specific embodiments described herein are merely for explaining the relevant invention and not for limiting the invention. It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0075] Figure 1 This is a schematic diagram of the structure of the electronic device 1000 provided in some embodiments of this application. Figure 2 yes Figure 1 The diagram shows a partially exploded view of the electronic device 1000 in some embodiments.

[0076] like Figure 1 and Figure 2 As shown, the electronic device 1000 provided in this application can be a mobile phone, watch, tablet personal computer, laptop computer, personal digital assistant (PDA), smart home device, personal computer, laptop computer, in-vehicle device, wearable device, augmented reality (AR) glasses, AR headset, virtual reality (VR) glasses, VR headset, etc. The electronic device 1000 can also be a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, an electronic device 1000 in a 5G network, or an electronic device 1000 in a future evolved public land mobile network (PLMN), or other devices capable of receiving and radiating electromagnetic wave signals. Figure 1 The electronic device 1000 of the illustrated embodiment is described using a mobile phone as an example. For ease of description, the thickness direction of the electronic device 1000 is defined as the Z-axis, the length direction as the Y-axis, and the width direction as the X-axis. It is understood that the coordinate system of the electronic device 1000 can be specifically set according to actual needs, and this application does not limit it in this regard.

[0077] For example, electronic device 1000 may include screen 200 and housing 300. It is understood that... Figure 1 and Figure 2The electronic device 1000 is shown only schematically, and the actual shape, size, and construction of these components are not subject to change. Figure 1 and Figure 2 Limitations. In other embodiments, when the electronic device 1000 is a different type of device, the electronic device 1000 may not include the screen 200. The screen 200 may be mounted on the housing 300. Appendix Figure 1 The diagram illustrates a roughly rectangular structure formed by the screen 200 and the housing 300. The screen 200 can be used to display images, text, etc. It should be understood that, in the embodiments of this application, when a user holds (typically vertically and facing the screen 200) the electronic device 1000, the electronic device 1000 is positioned with a top, bottom, left side, and right side. The top of the electronic device 1000 may face the sky. In this embodiment, the arrangement direction of the top and bottom may be parallel to the Y-axis direction. The arrangement direction of the left and right sides may be parallel to the X-axis direction.

[0078] For example, the housing 300 can be used to support the screen 200 and related components of the electronic device 1000. The housing 300 may include a mid-frame 310 and a rear cover 320. The rear cover 320 and the screen 200 can be mounted on opposite sides of the mid-frame 310. The arrangement direction of the rear cover 320 and the screen 200 can be parallel to the Z-axis direction. The rear cover 320 can be fixedly connected to the mid-frame 310 by means of adhesive bonding, welding, etc. At this time, the screen 200, the mid-frame 310, and the rear cover 320 can jointly enclose the internal space of the electronic device 1000. The internal space of the electronic device 1000 can be used to house the internal components of the electronic device 1000, such as batteries, speakers, microphones, or earpieces. The rear cover 320 can be made of a metal material, or it can be made of a non-conductive material, such as a glass back cover, a plastic back cover, or other non-metallic back cover, or it can be made of both conductive and non-conductive materials.

[0079] Exemplarily, the middle frame 310 may include a frame 311 and a middle plate 312. The frame 311 may surround and connect to the middle plate 312. The frame 311 may be formed of a conductive material such as metal. In this case, the frame 311 is a metal frame. In some embodiments, the middle frame 310 may also include only the frame 311. The back cover 320 may be integrally formed with the frame 311, that is, the back cover 320 and the frame 311 are a single unit.

[0080] Exemplarily, the electronic device 1000 may also include a circuit board 500. The circuit board 500 may be a printed circuit board (PCB). The circuit board 500 may be located between the mid-frame 310 and the back cover 320. Electronic components, such as radio frequency chips, may be mounted on the circuit board 500. The circuit board 500 may be made of flame-retardant material (FR-4) dielectric substrate, Rogers dielectric substrate, or a hybrid dielectric substrate of Rogers and FR-4, etc. It should be noted that FR-4 is a designation for a flame-retardant material grade, and Rogers dielectric substrate is a high-frequency board. In some embodiments, the circuit board 500 may also be located between the screen 200 and the mid-frame 310. This application does not limit the specific location of the circuit board 500.

[0081] In some embodiments, a metal layer may also be provided on the circuit board 500. The metal layer can be used to ground electronic components carried on the circuit board 500, or to ground other components within the electronic device 1000 (e.g., bracket antennas, frame antennas, etc.). In this case, the metal layer can be referred to as a ground plane, or a grounding layer. For example, the edge of the circuit board 500 can be considered as the edge of its ground plane.

[0082] In some embodiments, conductive portions in the mid-frame 310 and / or the rear cover 320 can also serve as a reference ground for the electronic device 1000. Devices such as the circuit board 500 in the electronic device 1000 can be grounded by electrical connection to the mid-frame 310 and / or the rear cover 320. In other embodiments, the electronic device 1000 may also have other grounding devices, which will not be described in detail here.

[0083] In this application, the electronic device 1000 may further include an antenna device (not shown). The antenna device may use the conductive portion of the frame 311 of the electronic device 1000 as the main radiator and / or parasitic branch. The antenna device can be used to support satellite frequency band communication and cellular communication. The satellite frequency band may include the BeiDou short message frequency band, satellite communication frequency band, StarNet frequency band, etc.

[0084] Figure 3 yes Figure 1 A partial structural schematic diagram of the electronic device 1000 shown.

[0085] like Figure 3As shown, the frame 311 of the electronic device 1000 can be a metal frame. The frame 311 may include a first short side 3111 and a second short side 3112 oppositely arranged, and a first long side 3113 and a second long side 3114 oppositely arranged. Both the first short side 3111 and the second short side 3112 can be connected between the first long side 3113 and the second long side 3114. An angle (e.g., a 90° angle) may be formed between the first long side 3113 and the first short side 3111. The length of the first long side 3113 may be greater than the length of the first short side 3111. It should be understood that the length of the first long side 3113 refers to its dimension in its extending direction. The length of the first short side 3111 refers to its dimension in its extending direction. In some embodiments, the first long side 3113, the second long side 3114, the first short side 3111, and the second short side 3112 may all be elongated. The frame 311 may also include multiple corners (not shown). Any two adjacent sides of the first long side 3113, the second long side 3114, the first short side 3111, and the second short side 3112 can be connected by a corner. In some other embodiments, any corner of the frame 311 can also be considered as part of the long side or short side adjacent to that corner.

[0086] In this embodiment, when the user holds the electronic device 1000 (see [link]), Figure 1 When the first short side 3111 is located at the top of the electronic device 1000, the second short side 3112 is located at the bottom of the electronic device 1000, the first long side 3113 is located at the right side of the electronic device 1000, and the second long side 3114 is located at the left side of the electronic device 1000.

[0087] It should be noted that, Figure 3 The border 311 shown is illustrated using a non-foldable electronic device 1000 as an example. When the electronic device 1000 is a foldable electronic device 1000 (e.g., a two-fold or three-fold device), the aforementioned first long side 3113, second long side 3114, first short side 3111, and second short side 3112 can be understood as the long and short sides of the frame corresponding to one of the folds in the multi-fold device.

[0088] Figure 4 yes Figure 3 A partially enlarged schematic diagram of the structure shown.

[0089] like Figure 4As shown, the antenna device 400 may include at least one radiator. In one implementation, the outer surface of the frame 311 may be a conductive material, such as a metal, thereby forming the appearance of a metal frame. In these implementations, the conductive portion of the frame 311 (e.g., including the outer surface of the frame 311) may be used as a radiator of the antenna device 400.

[0090] In one implementation, the outer surface of the frame 311 can be a non-conductive material, such as plastic, forming a non-metallic frame appearance, while the inner surface of the frame 311 can include a conductive material, such as a metallic material. In these implementations, the conductive portion of the frame 311 (e.g., including the inner surface of the frame 311) can be used as a radiator of the antenna device 400. It should be understood that the radiator (or the conductive material of the inner surface) disposed on the inner surface of the frame 311 is attached to the non-conductive material of the frame 311 to facilitate antenna radiation, and both the conductive and non-conductive materials should be considered as part of the frame 311.

[0091] Exemplarily, the first short side 3111 may have a first slit 311a and a second slit 311b spaced apart. The first slit 311a and the second slit 311b may divide the first short side 3111 into a metal segment, forming the first radiator 410 of the antenna device 400. The first slit 311a and the second slit 311b may be filled with an insulating material, such as a polymer, glass, ceramic, or a combination of these materials. In other embodiments, the material of the first short side 3111 may also be a non-conductive material. In this case, the first short side 3111 may not have the first slit 311a and the second slit 311b. The first radiator 410 may be a conductive element attached to the first short side 3111, such as an FPC antenna or an LDS antenna. In some other embodiments, the first radiator 410 may also be located on the first long side 3113.

[0092] For example, the first radiator 410 may include a first end 411 and a second end 412. The first end 411 may be positioned closer to the first slot 311a than the second end 412. The second end 412 may be positioned closer to the second slot 311b than the first end 411. Both the first end 411 and the second end 412 may be open ends. The first radiator 410 may not have a grounding point, that is, there is no directly grounded terminal on the first radiator 410. In this case, there is no direct current path to ground for the first radiator 410. The first radiator 410 can be regarded as a floating antenna stub.

[0093] For example, the first slit 311a and the second slit 311b can be asymmetrically arranged about the midpoint of the first short side 3111, that is, the distance between the first slit 311a and the midpoint of the first short side 3111 can be unequal to the distance between the second slit 311b and the midpoint of the first short side 3111. In this case, the first radiator 410 can also be asymmetrically arranged about the midpoint of the first short side 3111. The distance between the first end 411 of the first radiator 410 and the midpoint of the first short side 3111 can be unequal to the distance between the second end 412 and the midpoint of the first short side 3111. For example, the distance between the first slit 311a and the midpoint of the first short side 3111 can be greater than the distance between the second slit 311b and the midpoint of the first short side 3111.

[0094] Figure 5 yes Figure 4 The circuit topology of the first matching circuit M1 shown in some embodiments is illustrated.

[0095] like Figure 4 and Figure 5 As shown, the first radiator 410 may include a first feed point 413. The antenna device 400 may also include a first feed source 420 and a first matching circuit M1. Both the first feed source 420 and the first matching circuit M1 may be disposed on the circuit board 500. The first matching circuit M1 may be electrically connected between the first feed source 420 and the first feed point 413 of the first radiator 410. That is, the first feed source 420 may be electrically connected to the first feed point 413 through the first matching circuit M1. The first feed source 420 may input an electrical signal to the first feed point 413 to excite the first radiator 410 to generate a resonant current, forming a resonant mode to support the frequency band corresponding to the resonant current. For example, the first radiator 410 may be matched by the first matching circuit M1 to form a first resonant mode. The first resonant mode may be a half-wavelength mode.

[0096] The first matching circuit M1 may include one or more components. These components may be capacitors, inductors, etc. The components may be connected in series or in parallel. For example, the first matching circuit M1 may be as follows: Figure 5 Any one of the forms shown in (a) to (e), or any combination of (a) to (e). It should be noted that, unless otherwise specified, the specific forms of the matching circuits described below can also be referred to... Figure 5 The circuit configuration shown will not be described in detail further.

[0097] For example, the electronic device 1000 may also include a conductive spring (not shown). The first matching circuit M1 can be electrically connected to the first feed point 413 of the first radiator 410 via the conductive spring. In other embodiments, the electrical connection between the first matching circuit M1 and the first feed point 413 may also be achieved by means including but not limited to welding or by using electrical connectors such as microstrip lines or coaxial lines. This application does not specifically limit this.

[0098] Please refer to it again. Figure 4 The distance between the first feed point 413 and the end face of the first end 411 facing the first slot 311a (i.e., the end face of the first end 411 facing away from the second end 412) can be a first distance. The ratio of the first distance to the length of the first radiator 410 can be less than or equal to one-quarter. In this case, the first feed point 413 can be regarded as being located at the first end 411 of the first radiator 410, that is, the first feed source 420 can feed the end of the first radiator 410 (i.e., the first end 411 in this embodiment). The first radiator 410 can generate an antenna mode of half a wavelength. It should be noted that the length of the first radiator 410 can be the distance from the first end 411 to the second end 412 in the length extension direction of the first radiator 410.

[0099] Figure 6a yes Figure 4 The circuit topology diagram of the antenna device 400 shown in some embodiments is illustrated.

[0100] like Figure 4 and Figure 6a As shown, the antenna device 400 may further include a first adjustment circuit 430. The first adjustment circuit 430 may be disposed on the circuit board 500. The first adjustment circuit 430 may be connected in parallel with the first matching circuit M1. The first adjustment circuit 430 may cooperate with the first matching circuit M1 to adjust the impedance of the first radiator 410, thereby adjusting the operating frequency band of the first radiator 410. The antenna device 400 may include a first connection point 401 and a second connection point 402. The first connection point 401 may be electrically connected between the first matching circuit M1 and the first feed point 413. The second connection point 402 may be electrically connected between the first matching circuit M1 and the first feed source 420. One end of the first adjustment circuit 430 may be electrically connected to the first connection point 401, and the other end may be electrically connected to the second connection point 402, thereby achieving parallel connection with the first matching circuit M1.

[0101] For example, the first regulating circuit 430 may include a first switching assembly 430a and n first selection branches 432, where n can be an integer greater than or equal to 1. The first switching assembly 430a may include n first switches 431. That is, the number of first switches 431 can be the same as the number of first selection branches 432. One end of the nth first selection branch 432 can be electrically connected to a first connection point 401 through the nth first switch 431, and the other end can be electrically connected to a second connection point 402.

[0102] Exemplarily, each first selection branch 432 may be provided with a second matching circuit 433. The impedance values ​​of the second matching circuits 433 on multiple first selection branches 432 may not be exactly the same. The nth first selection branch 432 may be in an open circuit state or form a parallel circuit with the first matching circuit M1 under the action of the nth first switch 431. Exemplarily, when n is an integer greater than or equal to 2, multiple first switches 431 may be integrated into the same single-pole n-throw switch. In other embodiments, each first switch 431 may also be a single-pole single-throw switch or an electronic switching transistor (e.g., MOSFET, transistor, etc.). This application does not limit the specific form of the first switch 431.

[0103] For example, when the antenna device 400 is operating, the electronic device 1000 can control any one or more of the n first switches 431 of the first adjustment circuit 430 to be in a connected state, so that the second matching circuit 433 on the first selection branch 432 corresponding to the one or more first switches 431 can form a parallel circuit with the first matching circuit M1, so that the second matching circuit 433 on the one or more first selection branch 432 can form a filter structure or be connected in parallel with the first matching circuit M1, thereby adjusting the impedance of the first matching circuit M1 to adjust the operating frequency band of the first radiator 410. In other words, the electronic device 1000 can control the connection of any one or more of the n first switches 431 of the first adjustment circuit 430 to switch the parallel connection of the second matching circuit 433 on the corresponding one or more first selection branch 432 with the first matching circuit M1, thereby switching the matching impedance of the first matching circuit M1 to switch the operating frequency band of the first radiator 410. In this way, by switching the second matching circuit 433 on different first selection branches 432 to be connected in parallel with the first matching circuit M1, the first radiator 410 can be switched to operate in different frequency bands, and the first radiator 410 can cover multiple different operating frequency bands. Furthermore, while the first radiator 410 can switch operating frequency bands over a large span, it also has good antenna efficiency, thus meeting the different usage requirements of the electronic device 1000.

[0104] For example, the first radiator 410 can cover at least a portion of the cellular communication MHB main band under the action of the first adjustment circuit 430. The cellular communication MHB main band may include bands b1, b3, b34, b39, b40, and b41. The first radiator 410 can also cover at least one satellite band (e.g., any one or more of the BeiDou short message communication band, satellite communication band, and StarNet communication band) under the action of the first adjustment circuit 430. For example, when the first radiator 410 needs to cover multiple different operating frequency bands, the number of first selection branches 432 can be increased, and different combinations of the first selection branches 432 can be used to enable the first radiator 410 to cover different operating frequency bands.

[0105] In this embodiment, n can be 2. The first adjustment circuit 430 may include a first first switch k11, a second first switch k12, a first first selection branch 4321, a second first selection branch 4322, a first second matching circuit M21, and a second second matching circuit M22. One end of the first first selection branch 4321 can be electrically connected to the first connection point 401 of the first radiator 410 via the first first switch k11, and the other end can be electrically connected between the first matching circuit M1 and the first feed source 420. One end of the second first selection branch 4322 can be electrically connected to the first connection point 401 of the first radiator 410 via the second first switch k12, and the other end can be electrically connected between the first matching circuit M1 and the first feed source 420. The first first selection branch 4321 and the second first selection branch 4322 can be controlled by the first first switch k11 and the second first switch k12, respectively. The impedance value of the first second matching circuit 433 may be different from the impedance value of the second second matching circuit 432.

[0106] For example, when the first switch k11 is in the connected state and the second switch k12 is in the open state, the first second matching circuit M21 of the first first selection branch 4321 can be connected in parallel with the first matching circuit M1, thereby switching the matching impedance of the first radiator 410 to switch the operating frequency band of the first radiator 410. When the first switch k11 is in the open state and the second switch k12 is in the connected state, the second second matching circuit M22 of the second first selection branch 4322 can be connected in parallel with the first matching circuit M1, thereby switching the matching impedance of the first radiator 410 to switch the operating frequency band of the first radiator 410. In some embodiments, the first switch k11 and the second switch k12 can also be in the connected state simultaneously. In this case, the first second matching circuit M21 and the second second matching circuit M22 can be connected in parallel with each other and form a parallel matching with the first matching circuit M1. In some embodiments, the first switch k11 and the second switch k12 can also be in the open state simultaneously.

[0107] Please refer to it again. Figure 4 and Figure 6a The first regulating circuit 430 may further include a second switching assembly 430b and w second selection branches 435, where w can be an integer greater than or equal to 1. The second switching assembly 430b may include w second switches 434. That is, the number of second switches 434 may be the same as the number of second selection branches 435. One end of the wth second selection branch 435 may be grounded, and the other end may be electrically connected to the first connection point 401 through the wth second switch 434. Each second selection branch 435 may be provided with a third matching circuit 436. The impedance values ​​of the third matching circuits 436 on multiple second selection branches 435 may not be exactly the same. The wth second selection branch 435 may be in an open circuit state under the action of the wth second switch 434, or the wth third matching circuit 436 may be connected to the loop of the first radiator 410, and the first radiator 410 may be grounded through the wth second selection branch 435. It should be noted that when the first radiator 410 is grounded through the second selection branch 435, it can be considered that the first radiator 410 is indirectly grounded through the second selection branch 435. In this case, the first radiator 410 can still be considered not directly grounded, and the first radiator 410 is a floating antenna radiator. Exemplarily, one or more second switches 434 can be integrated with one or more first switches 431 into the same single-pole n-throw switch. In other embodiments, each second switch 434 can also be a single-pole single-throw switch or an electronic switching transistor (e.g., a MOSFET, a transistor, etc.). This application does not limit the specific form of the second switch 434.

[0108] For example, when the antenna device 400 is working, the electronic device 1000 can control any one or more of the n first switches 431 and / or one or more of the w second switches 434 of the first adjustment circuit 430 to be in a connected state, so that one or more first selection branches 432 can be arbitrarily combined with one or more second selection branches 435 to form a variety of matching networks with different impedance values, so as to jointly adjust the resident matching impedance of the first radiator 410, so that the first radiator 410 can cover more operating frequency bands.

[0109] In this embodiment, w can be 2. The first adjustment circuit 430 may include a first second switch k21, a second second switch k22, a first second selection branch 4351, a second second selection branch 4352, a first third matching circuit M31, and a second third matching circuit M32. One end of the first second selection branch 4351 can be electrically connected to the first connection point 401 via the first second switch k21, and the other end can be grounded. One end of the second second selection branch 4352 can be electrically connected to the first connection point 401 via the second second switch k22, and the other end can be grounded. The first second selection branch 4351 and the second second selection branch 4352 can be controlled by the first second switch k21 and the second second switch k22, respectively. The impedance value of the first third matching circuit M31 may be different from the impedance value of the second third matching circuit M32.

[0110] In other embodiments, the first regulating circuit 430 may also exclude the second switch 434 and the second selection branch 435.

[0111] Figure 6b yes Figure 4 The circuit topology diagram of the antenna device 400 shown in some embodiments is illustrated.

[0112] Please refer to it again. Figure 4 , Figure 6a as well as Figure 6b The antenna device 400 may further include a third connection point 403. The third connection point 403 may be located on the first radiator 410. The third connection point 403 may be spaced apart from the first feed point 413. The antenna device 400 may further include a second adjustment circuit 440. The second adjustment circuit 440 may be disposed on the circuit board 500. The second adjustment circuit 440 may be electrically connected to the third connection point 403. For example, the third connection point 403 may be located close to the first feed point 413; for instance, the distance between the third connection point 403 and the first feed point 413 may be less than or equal to half the total length of the first radiator 410. In this case, the second adjustment circuit 440 may be used to adjust the antenna aperture of the first radiator 410 to adjust the operating frequency band of the first radiator 410.

[0113] For example, the second regulating circuit 440 may include a third switching component 440a and t third selection branches 442, where t can be an integer greater than or equal to 1. The third switching component 440a may include t third switches 441. That is, the number of third switches 441 can be the same as the number of third selection branches 442. One end of the t-th third selection branch 442 can be electrically connected to the third connection point 403 of the first radiator 410, and the other end can be grounded through the t-th third switch 441. Each third selection branch 442 may be provided with a fourth matching circuit 443. The impedance values ​​of the fourth matching circuits 443 on the multiple third selection branches 442 may be different. The t-th third selection branch 442 can be in an open circuit state or connected to the loop of the first radiator 410 under the action of the t-th third switch 441. For example, when t is an integer greater than or equal to 2, the multiple third switches 441 can be integrated into the same parallel switch. In other embodiments, each third switch 441 may also be a single-pole single-throw switch or an electronic switch (such as a MOSFET, transistor, etc.). This application does not limit the specific form of the first switch 431.

[0114] For example, when the antenna device 400 is operating, the electronic device 1000 can control any one or more of the t third switches 441 in the second adjustment circuit 440 to be in a connected state, so that the fourth matching circuit 443 on the third selection branch 442 corresponding to the one or more third switches 441 can be connected to the loop of the first radiator 410 to adjust the impedance of the loop, thereby adjusting the antenna aperture of the first radiator 410 and thus adjusting the operating frequency band of the first radiator 410. In other words, the electronic device 1000 can control the connection of any one or more of the t third switches 441 in the second adjustment circuit 440 to switch the connection of the fourth matching circuit 443 on the corresponding one or more third selection branches 442 to the loop of the first radiator 410. The first radiator 410 can be grounded through the corresponding third selection branch 442, thereby switching the antenna aperture of the first radiator 410 and thus switching the operating frequency band of the first radiator 410. In this way, by switching the fourth matching circuit 443 on different third selection branches 442 into the loop of the first radiator 410, the first radiator 410 can be switched to work in different frequency bands. The first radiator 410 can cover multiple different operating frequency bands, thereby meeting the different usage requirements of the electronic device 1000.

[0115] In this embodiment, t can be 4. In this case, the second adjustment circuit 440 may include a first third switch k31, a second third switch k32, a third third switch k33, a fourth third switch k34, a first third selection branch 4421, a second third selection branch 4422, a third third selection branch 4423, a fourth third selection branch 4424, a first third matching circuit M31, a second third matching circuit M32, a third third matching circuit M33, and a fourth third matching circuit M34. One end of the first third selection branch 4421 can be electrically connected to the third connection point 403 of the first radiator 410, and the other end can be grounded through the first first switch k11. The connection methods of the remaining multiple third switches 441 and multiple third selection branches 442 can refer to the connection methods of the first third switch k31 and the first third selection branch 4421, and will not be described again here. At this point, the first third selection branch 4421, the second third selection branch 4422, the third third selection branch 4423, and the fourth third selection branch 4424 can be controlled one-to-one by the first third switch k31, the second third switch k32, the third third switch k33, and the fourth third switch k34. The impedance values ​​of the first fourth matching circuit M31, the second fourth matching circuit M32, the third fourth matching circuit M33, and the fourth fourth matching circuit M34 may not be exactly the same.

[0116] For example, when the antenna device 400 is working, the electronic device 1000 can control the cooperation of the first adjustment circuit 430 and the second adjustment circuit 440 to jointly adjust the operating frequency band of the first radiator 410. By combining any one or more of the different first selection branches 432, different second selection branches 435 and different third selection branches 442, the first radiator 410 can cover more operating frequency bands. The first radiator 410 can cover a wider frequency range, which is conducive to the miniaturization of the antenna device 400 and saves internal space of the electronic device 1000.

[0117] In other embodiments, the antenna device 400 may also exclude the second adjustment circuit 440.

[0118] Please refer to it again. Figure 4 , Figure 6a as well as Figure 6bThe antenna device 400 may further include a fifth matching circuit M5. The fifth matching circuit M5 may be electrically connected between the first feed point 413 and the first matching circuit M1. In this case, the first connection point 401 may be electrically connected between the first matching circuit M1 and the fifth matching circuit M5. The first adjustment circuit 430 may be connected in parallel with the first matching circuit M1. The first feed source 420 may be electrically connected to the first feed point 413 via the first matching circuit M1 and the fifth matching circuit M5. The first feed source 420 may input an electrical signal to the first feed point 413 to excite the first radiator 410 to generate a resonant current, forming a resonant mode to support the frequency band corresponding to the resonant current. For example, the first radiator 410 may be matched by the first matching circuit M1 to form a first resonant mode. The first resonant mode may be a half-wavelength mode. The first radiator 410 may also form a second resonant mode via the fifth matching circuit M5. The second resonant mode may be a three-quarter wavelength mode.

[0119] Exemplarily, the antenna device 400 may further include a third adjustment circuit (not shown). The third adjustment circuit may be connected in parallel with the fifth matching circuit M5. The third adjustment circuit may include a plurality of fourth selection branches (not shown) and a fourth switching assembly (not shown). Each fourth selection branch may be provided with a sixth matching circuit (not shown). The impedance values ​​of the plurality of sixth matching circuits may not be exactly the same. The third adjustment circuit can control the fourth switching assembly to selectively connect any one or more fourth selection branches in parallel with the fifth matching circuit M5, or to disconnect all fourth selection branches from the fifth matching circuit M5, thereby adjusting the impedance to adjust the resonant frequency of the antenna.

[0120] In other embodiments, the antenna device 400 may also exclude the fifth matching circuit M5.

[0121] Figure 7 yes Figure 4 The diagram shows the antenna efficiency of the first radiator 410 operating in the cellular communication MHB master band. Figure 8 yes Figure 4 The system efficiency and upper hemisphere percentage of the first radiator 410 operating in the cellular communication MHB master band are shown.

[0122] like Figure 7 and Figure 8As shown, the first radiator 410, in cooperation with the first adjustment circuit 430 and the second adjustment circuit 440, can cover the main frequency band of cellular communication (MHB). When the first radiator 410 operates in the main frequency band, its S11 value at different frequency bands within the main frequency band is below -4dB. The average in-band system efficiency of the first radiator 410 at different frequency bands within the main frequency band is below -3.5dB. The first radiator 410 can cover more than 65% of the upper hemisphere of the electronic device 1000. It should be understood that the first radiator 410 in this embodiment has good antenna efficiency, good antenna performance, and a good user experience when used to support cellular communication.

[0123] Understandably, compared to conventional antenna devices that use multiple antennas to support different frequency bands within the cellular communication MHB main band, these devices are larger and suffer from mutual coupling, affecting antenna performance. In this embodiment, the antenna device 400, through the cooperation of the first adjustment circuit 430 and the second adjustment circuit 440, allows the first radiator 410 to cover the cellular communication MHB main band, effectively reducing the size of the antenna device 400 and saving internal space in the electronic device 1000. Simultaneously, it effectively avoids the problem of mutual coupling among multiple cellular antennas, resulting in better antenna performance, higher antenna efficiency, and a better upper hemisphere coverage when the first radiator 410 operates within the cellular communication MHB main band.

[0124] Figure 9 yes Figure 4 The diagram shows the antenna efficiency of the first radiator 410 operating in the BeiDou short message band. Figure 10 yes Figure 4 The diagram shows the antenna efficiency of the first radiator 410 operating in the satellite communication frequency band. Figure 11 yes Figure 4 The first radiator 410 shown is a circular polarization gain pattern when it operates in the satellite communication band. Figure 12 yes Figure 4 The first radiator 410 shown is a circular polarization gain pattern when it operates in the StarNet frequency band.

[0125] like Figure 9 and Figure 10 As shown, the first radiator 410, in cooperation with the first adjustment circuit 430 and the second adjustment circuit 440, can cover multiple satellite frequency bands, such as the BeiDou short message frequency band, satellite call frequency band, and StarNet frequency band. Specifically, when the first radiator 410 operates in the BeiDou short message frequency band, its receiving frequency band (see [link to relevant documentation]). Figure 9 (mid-curve RX) and transmission band (see [reference]) Figure 9The S11 value of the curve TX is below -4dB. When the first radiator 410 operates in the satellite communication band, its receiving band (see [reference]) is [missing information] Figure 10 The S11 value of the medium curve (RX) can be below -3.8dB, in the transmission band (see [link]). Figure 10 The S11 value of the curve (TX) can be below -2.4dB. The antenna efficiency of the first radiator 410 operating in both the BeiDou short message band and the satellite communication band is high, which can meet the requirements of satellite antenna communication.

[0126] like Figure 11 As shown, when the first radiator 410 operates in the satellite communication frequency band, the beam generated by the first radiator 410 can be above ±45°. The wide beam generated by the first radiator 410 allows it to have good transmission and reception capabilities in a wide range of directions. For example, the beam generated by the first radiator 410 can be within ±60°, and the circular polarization gain of the first radiator 410 can be below -7dB. The first radiator 410 exhibits high receiving sensitivity, good communication quality, and a good user experience when used to support satellite communication.

[0127] like Figure 12 As shown, when the first radiator 410 operates in the StarNet frequency band, the beam generated by the first radiator 410 can be above ±45°. The wide beam generated by the first radiator 410 allows it to have good transmission and reception capabilities in a wide range of directions. For example, the beam generated by the first radiator 410 can be within ±80°, and the circular polarization gain of the first radiator 410 can be below -7.5dB. The first radiator 410 exhibits high receiving sensitivity, good communication quality, and a good user experience when used to support StarNet.

[0128] In other words, the first radiator 410, through the cooperation of the first adjustment circuit 430 and the second adjustment circuit 440, can cover multiple satellite frequency bands and the cellular communication MHB main frequency band. Please refer again. Figure 6a and Figure 6bAs shown, for example, electronic device 1000 can enable antenna device 400 to operate in the satellite communication transmission frequency band and b1 band by connecting the first first switch k11 in the first adjustment circuit 430. Electronic device 1000 can also enable antenna device 400 to operate in the satellite communication reception frequency band by connecting the first first switch k11 of the first adjustment circuit 430 and the first third switch k31 of the second adjustment circuit 440. Electronic device 1000 can also enable antenna device 400 to operate in the BeiDou short message transmission frequency band or reception frequency band by disconnecting all first switches 431 of the first adjustment circuit 430 and connecting the second third switch k32 or the third third switch k33 of the second adjustment circuit 440. Electronic device 1000 can also enable antenna device 400 to operate in the b3 band by disconnecting all first switches 431 of the first adjustment circuit 430 and connecting the fourth third switch k34 of the second adjustment circuit 440. The electronic device 1000 can also enable the antenna device 400 to operate in the b41 frequency band by connecting the second first switch k12 of the first adjustment circuit 430 and the fourth third switch k34 of the second adjustment circuit 440.

[0129] Understandably, satellite antennas are typically placed on the top of electronic devices for satellite alignment. However, the limited space at the top of electronic devices means that the satellite antenna encroaches on the layout space of the cellular antenna, resulting in smaller sizes for both and impacting antenna performance. Furthermore, spatial coupling between the satellite and cellular antennas also affects performance. In this embodiment, the first radiator 410 can simultaneously support both satellite and cellular communication. This means the satellite and cellular antennas can share the same radiator for communication, achieving a unified satellite and cellular antenna system. This effectively saves top space on the electronic device 1000, meets other layout requirements, improves performance, and enhances the user experience.

[0130] Secondly, unlike conventional satellite antennas which have a grounding point, satellite antennas require additional adjustment circuitry to improve efficiency and meet satellite communication requirements. However, in this embodiment, the first radiator 410 is configured as a floating radiator without a grounding point, resulting in higher antenna efficiency. This allows for both meeting satellite communication requirements and miniaturizing the antenna device 400, saving internal space in the electronic device 1000.

[0131] Secondly, compared to conventional antenna devices that adjust the radiator's aperture to regulate its operating frequency by electrically connecting a matching circuit near the radiator's feed point and grounding the matching circuit, this method only allows switching between adjacent frequency bands, i.e., only small-span frequency band switching. This means the radiator cannot simultaneously cover both the cellular communication MHB main band and satellite bands. Even if adjusting the antenna aperture allows the radiator to operate in both the cellular communication MHB main band and satellite bands, the large frequency band switching range leads to a sharp drop in antenna efficiency, failing to meet the performance requirements of satellite antennas. In this embodiment, the antenna device 400 may further include a first matching circuit M1 and a first adjustment circuit 430. The first matching circuit M1 can be connected in series between the first feed point 413 and the first feed source 420 of the first radiator 410. The first adjustment circuit 430 can be connected in parallel with the first matching circuit M1. The first adjustment circuit 430 may include n first switches 431 and n first selection branches 432. Each first selection branch 432 may be equipped with a second matching circuit 433. By controlling one or more switches to be in a connected state, the second matching circuits 433 on one or more first selection branches 432 are connected in parallel with the first matching circuit M1 to adjust the resident matching impedance of the first radiator 410. This allows the first radiator 410 to switch operating frequency bands with both small and large spans, enabling it to simultaneously cover the cellular communication MHB main band and satellite bands. Furthermore, by switching the resident matching impedance to switch operating frequency bands, the first radiator 410 maintains high antenna efficiency even with large-span switching, thus meeting the performance requirements of satellite antennas and providing a better user experience.

[0132] Furthermore, compared to conventional satellite antennas, which require symmetrical placement at the top of the electronic device to meet performance requirements (such as high antenna efficiency and wide beamwidth), grounding at the middle of the antenna, and adjusting the antenna aperture with a first adjustment circuit near the feed point and a second adjustment circuit at the end of the antenna facing away from the feed point to improve antenna efficiency, the circuit board 500 needs to have adjustment circuits and feed sources placed at corresponding positions on the antenna to meet the circuit setup requirements of the satellite antenna. This results in a relatively dispersed placement of the adjustment circuits and feed sources, leading to a larger size of the circuit board 500 and occupying more internal space in the electronic device 1000. In contrast, the first radiator 410 in this embodiment is a floating antenna radiator, and the first feed source 420 can be fed at the end of the first radiator 410 (i.e., the first end in this embodiment). This results in higher antenna efficiency and circular polarization gain, as well as a wider beamwidth, which meets the antenna performance requirements of a satellite antenna. Meanwhile, the first feed source 420, the first adjustment circuit 430 and the second adjustment circuit 440 can all be set close to the same end of the first radiator 410, so that the circuit board 500 can centrally arrange the first feed source 420, the first adjustment circuit 430 and the second adjustment circuit 440, thereby effectively reducing the size of the circuit board 500 and saving internal space of the electronic device 1000.

[0133] Furthermore, in this embodiment, the antenna device 400, by setting the first adjustment circuit 430 and the second adjustment circuit 440 to cooperate with each other, switches the operating frequency band of the first radiator 410. This allows the first radiator 410 to meet multiple operating frequency band requirements while having fewer first selection branches 432 in the first adjustment circuit 430 and fewer third selection branches 442 in the second adjustment circuit 440. This avoids the problem of a large number of selection branches in the same adjustment circuit being too close to each other and causing coupling, which would affect the antenna performance of the first radiator 410.

[0134] In some implementations, please refer to Figure 13 , Figure 13 yes Figure 4 The diagram shown is a schematic representation of the structure in some embodiments. The first long side 3113 of the frame 311 may also have a gap (not shown), and the metal portion between this gap and the first gap 311a of the first short side 3111 can constitute the second radiator 450. Both ends of the second radiator 450 can be open. The second radiator 450 has a grounding point and can be grounded through the grounding point. The antenna device 400 may also include a third adjustment circuit 460. The third adjustment circuit 460 can be electrically connected to the second radiator 450. The third adjustment circuit 460 can be used to adjust the impedance of the second radiator 450. The second radiator 450 can serve as a parasitic branch of the first radiator 410, or as a main radiator to support communication in other frequency bands.

[0135] In some implementations, please refer to Figure 14 , Figure 14 yes Figure 13 The diagram shown is a schematic representation of the structure in some embodiments. The antenna device 400 may also exclude the third adjustment circuit. The second radiator 450 may serve as a parasitic stub of the first radiator 410. The second connection point 402 may also be located at the second radiator 450. The second adjustment circuit 440 may also be used to adjust the resonant frequency of the parasitic stub (i.e., the second radiator 450), thereby allowing for further fine-tuning of the resonant frequency of the first radiator 410.

[0136] In some implementations, please refer to Figure 15 , Figure 15 yes Figure 14 The diagram shown is a schematic representation of the structure in some embodiments. The first short side 3111 may also have a third slot 311c. The third slot 311c may be located on the side of the second slot 311b facing away from the first slot 311a. In this case, the second slot 311b and the third slot 311c can divide a metal segment on the first short side 3111 to form the third radiator 480 of the antenna device 400. The third slot 311c may be filled with insulating material. The two ends of the third radiator 480 may be open ends. The third radiator 480 may have a grounding point. The grounding point may be located between the two ends of the third radiator 480. The third radiator 480 may be grounded at the grounding point. When the antenna device 400 is working, the third radiator 480 may serve as a parasitic branch of the first radiator 410, thereby widening the bandwidth of the antenna device 400 and improving antenna performance. Exemplarily, the third radiator 480 may serve as a parasitic branch of the first radiator 410, widening the operating bandwidth of the first radiator 410.

[0137] In some implementations, please refer to Figure 16 , Figure 16 yes Figure 4 The diagram shown is a schematic representation of the structure in some embodiments. The first slit 311a and the second slit 311b of the first short side 3111 can also be symmetrically arranged about the midpoint of the first short side 3111. In this case, the distance between the first end 411 of the first radiator 410 and the midpoint of the first short side 3111 can be equal to the distance between the second end 412 and the midpoint of the first short side 3111.

[0138] In some implementations, please refer to Figure 17 , Figure 17 yes Figure 4The diagram shown is a schematic representation of the structure in some embodiments. The first gap 311a and the second gap 311b can also be located on the first long side 3113, that is, the first radiator 410 can also be formed on the first long side 3113. In this way, by placing the first radiator 410 on the first long side 3113, different layout requirements within the electronic device 1000 can be met.

[0139] In some implementations, please refer to Figure 18 , Figure 18 yes Figure 4 The diagram shown is a schematic representation of the structure in some embodiments. The third connection point 403 of the first radiator 410 may also be positioned closer to the second end 412 than the first end 411. The second adjustment circuit 440 can be used to adjust the antenna efficiency of the first radiator 410 and fine-tune the resonant frequency of the antenna.

[0140] In some implementations, please refer to Figure 19 , Figure 19 yes Figure 4 The diagram shows the circuit topology of the antenna device 400 in some embodiments. The antenna device 400 may also exclude the second adjustment circuit 440. The first adjustment circuit 430 may also have multiple first selection branches 432 and / or multiple second selection branches 435, such that the first adjustment circuit 430 can expand the resident matching impedance adjustment range of the first radiator 410 by controlling different combinations of one or more first switches 431 and / or different combinations of one or more second switches 434. This allows the first radiator 410 to cover the cellular communication MHB main band and at least one satellite band to meet user needs. Exemplarily, the first adjustment circuit 430 may include three first switches 431, three first selection branches 432, three second matching circuits 432, three second switches 434, three second selection branches 435, and three third matching circuits 436.

[0141] In other embodiments, the antenna device 400 may further include a second feed source (not shown). The first radiator 410 may further include a second feed point (not shown). The second feed point may be spaced apart from the first feed point 413, the first connection point 401, and the third connection point 403. The second feed source can feed the first radiator 410 through the second feed point. In this way, by cooperating with the first feed source 420 and the second feed source to perform distributed feeding of the first radiator 410, common radiator split feeding can be achieved, thereby reducing the use of multi-band combiners in the RF front end, which is beneficial to reducing manufacturing costs, while also reducing losses and improving antenna performance.

[0142] It should be noted that, in the absence of conflict, the features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0143] It should be noted that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0144] The above are merely some embodiments of this application, and the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device (1000), characterized by, The first radiating body (410) is formed by a part of the frame (311) or is fixed to the inner side of the frame (311), and is used to support satellite frequency band communication and cellular medium-high frequency band communication, the satellite frequency band including one or more of Beidou short message frequency band, satellite communication frequency band and star network frequency band; The first radiating body (410) includes a first end (411), and the first radiating body (410) has no grounding point; the first radiating body (410) is provided with a first feeding point (413), and the distance between the first feeding point (413) and the first end (411) is less than or equal to one fourth of the length of the first radiating body (410); and the first feeding source (420) is electrically connected to the first feeding point (413).

2. The electronic device (1000) according to claim 1, characterized by, The electronic device (1000) further includes a first matching circuit (M1) and a first adjusting circuit (430), the first matching circuit (M1) is electrically connected between the first feeding source (420) and the first feeding point (413), and the electronic device (1000) further includes a first connection point (401) and a second connection point (402), the first connection point (401) is electrically connected between the first matching circuit (M1) and the first feeding point (413), and the second connection point (402) is electrically connected between the first matching circuit (M1) and the first feeding source (420). The first adjusting circuit (430) includes a first switch assembly (430a) and at least one first selection branch (432), one end of the first selection branch (432) is electrically connected to the first connection point (401) through the first switch assembly (430a), the other end is electrically connected to the second connection point (402), and the first adjusting circuit (430) is configured to selectively connect any one or more first selection branches (432) in parallel with the first matching circuit (M1) through the first switch assembly (430a), or disconnect all first selection branches (432) from the first connection point (401) through the first switch assembly (430a), so as to switch the working frequency band of the first radiating body (410).

3. The electronic device (1000) according to claim 2, characterized by, The first adjusting circuit (430) includes n first selection branches (432) and n second matching circuits (433), the first switch assembly (430a) includes n first switches, n second matching circuits (433) are arranged in one-to-one correspondence in n first selection branches (432), one end of n first selection branches (432) is electrically connected to the first connection point (401) in one-to-one correspondence through n first switches, the other end is electrically connected to the second connection point (402), and the impedance values of n second matching circuits (433) are not completely the same. Wherein, n is an integer greater than or equal to 1.

4. The electronic device (1000) according to claim 2 or 3, characterized by, The first adjusting circuit (430) further comprises a second switch assembly (430b) and at least one second selection branch (435), one end of the second selection branch (435) being electrically connected to the first connection point (401) through the second switch assembly (430b), and the other end being grounded; The first adjusting circuit (430) is further configured to selectively electrically connect any one or more of the second selection branches (435) to the first connection point (401) through the second switch assembly (430b), or disconnect all the second selection branches (435) from the first connection point (401) through the second switch assembly (430b), so as to switch the working frequency band of the first radiator (410).

5. The electronic device (1000) according to any one of claims 1 to 4, characterized in that, The electronic device (1000) further comprises a second adjusting circuit (440), the second adjusting circuit (440) comprising a third switch assembly (440a) and at least one third selection branch (442), and the electronic device (1000) further comprises a third connection point (403) located at the first radiator (410); One end of the third selection branch (442) is electrically connected to the third connection point (403), and the other end is grounded through the third switch assembly (440a), and the second adjusting circuit (440) is configured to selectively ground any one or more of the third selection branches (442) through the third switch assembly (440a), or disconnect all the third selection branches (442) from the grounding point through the third switch assembly (440a), so as to switch the working frequency band of the first radiator (410).

6. The electronic device (1000) according to claim 5, characterized by, The distance between the third connection point (403) and the first feeding point (413) is less than or equal to one half of the length of the first radiator (410).

7. The electronic device (1000) according to any one of claims 1 to 6, characterized by, The bezel (311) comprises a first long side (3113) and a first short side (3111) arranged adjacently, the first short side (3111) being located at the top of the electronic device (1000), the first radiator (410) being formed on the first short side (3111) or being fixed to the inner side of the first short side (3111).

8. The electronic device (1000) according to any one of claims 1 to 4, characterized by, The bezel (311) comprises a first long side (3113) and a first short side (3111) arranged adjacently, the first short side (3111) being located at the top of the electronic device (1000), the first radiator (410) being formed on the first short side (3111) or being fixed to the inner side of the first short side (3111), and the electronic device (1000) further comprises a second radiator (450) formed by a part of the first long side (3113) or fixed to the inner side of the first long side (3113); The electronic device (1000) further comprises a second adjusting circuit (440), the second adjusting circuit (440) comprises a third switch assembly (440a) and at least one third selection branch (442), and the electronic device (1000) further comprises a third connection point (403) located at the second radiator (450). One end of the third selection branch (442) is electrically connected to the third connection point (403), and the other end is grounded through the third switch assembly (440a), the second adjusting circuit (440) is configured to selectively ground any one or more third selection branches (442) through the third switch assembly (440a), or disconnect all the third selection branches (442) from the ground point through the third switch assembly (440a), so as to switch the working frequency band of the first radiator (410).

9. The electronic device (1000) according to claim 7 or 8, characterized by, The first short side (3111) comprises a first gap (311a) and a second gap (311b) arranged at intervals, and the part of the first short side (3111) between the first gap (311a) and the second gap (311b) constitutes the first radiator (410), and the distance between the first gap (311a) and the midpoint of the first short side (3111) is not equal to the distance between the second gap (311b) and the midpoint of the first short side (3111).

10. The electronic device of claim 9, wherein, The first radiator (410) further comprises a second end portion (412), and the first end portion (411) is arranged closer to the first gap (311a) than the second end portion (412), and the distance between the first gap (311a) and the midpoint of the first short side (3111) is greater than the distance between the second gap (311b) and the midpoint of the first short side (3111).

11. The electronic device (1000) according to claim 9 or 10, characterized by, The first short side (3111) further comprises a third gap (311c) located on the side of the second gap (311b) away from the first gap (311a), and the part of the first short side (3111) between the third gap (311c) and the second gap (311b) constitutes a third radiator (480).

12. The electronic device (1000) according to any one of claims 1 to 11, characterized by, The electronic device (1000) further comprises a second feed source, and the first radiator (410) further comprises a second feeding point arranged at intervals with the first feeding point (413), and the second feed source is electrically connected to the second feeding point.

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