Electronic device

Abstract

Provided in the present application is an electronic device. The electronic device comprises a first radiator, a second radiator, a connection branch, a switching assembly and a feed source. The first radiator is provided with a first grounding point and a first connection point. The second radiator is provided with a second grounding point and a second connection point. The first connection point and the second connection point are located between the first grounding point and the second grounding point. One end of the connection branch is electrically connected to the first connection point, and the other end of the connection branch is electrically connected to the second connection point. The switching assembly is electrically connected to the connection branch. The feed source is electrically connected to one of the first radiator and the second radiator. The first radiator and the second radiator are used for at least generating a first resonance point and a second resonance point when the switching assembly is in a first state, and at least generating a third resonance point and a fourth resonance point when the switching assembly is in a second state. The frequency of the first resonance point and the frequency of the second resonance point are both less than the frequency of the third resonance point, and are also less than the frequency of the fourth resonance point.

Description

electronic devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on July 31, 2023, with application number 202310963669.X, and priority to the Chinese patent application with the invention name “Electronic Device”, all contents of which are incorporated by reference into this application. Technical Field

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

[0003] With the continuous development of mobile phones, larger screen-to-body ratios are becoming increasingly popular. However, as the screen-to-body ratio increases, the space available for antenna installation within the phone becomes increasingly smaller, resulting in poor antenna performance and an inability to meet user needs. Therefore, developing a compact and high-performance antenna has become a research topic in mobile phone antennas.

[0004] Summary of the Invention

[0005] An embodiment of the present application provides an electronic device, aiming to provide an electronic device with a small antenna device and good working performance.

[0006] The electronic device provided in the present application includes a first radiator, a second radiator, a connecting branch, a switching component, and a feed source. The first radiator and the second radiator are spaced apart. The radiator is provided with a first grounding point and a first connection point spaced apart. The second radiator is provided with a second grounding point and a second connection point spaced apart. The first connection point and the second connection point are located between the first grounding point and the second grounding point. One end of the connecting branch is electrically connected to the first connection point. The other end of the connecting branch is electrically connected to the second connection point. The switching component is electrically connected to the connecting branch. The feed source is electrically connected to one of the first radiator and the second radiator. The switching component includes a first state and a second state. When the switching component is in the first state, the first radiator and the second radiator are used to generate at least a first resonance point and a second resonance point. When the switching component is in the second state, the first radiator and the second radiator are used to generate at least a third resonance point and a fourth resonance point. The frequency of the first resonance point and the frequency of the second resonance point are both lower than the frequency of the third resonance point. The frequency of the first resonance point and the frequency of the second resonance point are also both lower than the frequency of the fourth resonance point.

[0007] It will be appreciated that, compared to an antenna device in which the two radiators are independent and non-contacting, and a switch is provided at the ground terminal of one of the radiators to control the electrical connection between the radiator and the floor, the frequency of the antenna device is adjusted by changing the electrical connection between the radiator and the floor. By switching the switch, the antenna device can generate three resonances. In contrast, the antenna device in this embodiment includes a connecting branch between the first and second radiators, and a switching component is provided to electrically connect the connecting branch. By controlling the switching component to switch between a first state and a second state, the current in the connecting branch switches between an off state and a on state, and the electrical connection between the first and second radiators is controlled, thereby changing the current flow path of the antenna device and adjusting the frequency of the antenna device. The first and second connecting points can be located between the first and second grounding points, that is, the first and second grounding points can be located remotely from each other and on different sides of the connecting branch. Thus, when the switching component switches from the first state to the second state, the operating frequency of the antenna device in both half-wavelength mode and double-wavelength mode increases. In other words, the first radiator and the second radiator in this embodiment can be electrically connected to the floor regardless of whether the switching component is in the first state or the second state, so that the antenna device can operate in two resonant frequency bands regardless of whether the switching component is in the first state or the second state, that is, the entire antenna device can generate four resonances, and the working performance is better.

[0008] Secondly, compared to some antenna devices in which the two ground ends of the two radiators are arranged close to each other to form an electrical coupling, and the two open ends of the two radiators are arranged close to each other to form a magnetic coupling, the first connection point of the first radiator and the second connection point of the second radiator of the antenna device in this embodiment can be located between the first ground point and the second ground point, and the first ground point of the first radiator and the second ground point of the second radiator can be far away from each other. In this way, the first ground point of the first radiator can be arranged close to the second end of the second radiator (i.e., the open end of the second radiator), and electromagnetic coupling can be formed between the two. The second ground point of the second radiator can be arranged close to the second end of the first radiator (i.e., the open end of the first radiator), and electromagnetic coupling can be formed between the two. This can effectively improve the radiation efficiency of the antenna device and help alleviate the problem of the minimum radiation efficiency of the antenna device.

[0009] In one possible implementation, when the switching component is in the first state, the frequency of the second resonance point is higher than the frequency of the first resonance point. When the switching component is in the second state, the frequency of the fourth resonance point is higher than the frequency of the third resonance point. The ratio between the frequency of the second resonance point and the frequency of the third resonance point is in a range of 1:1 to 1:1.1.

[0010] In this way, the frequencies of the multiple resonance points of the antenna device are different, so that the antenna device can operate in multiple frequency bands, and the performance of the antenna device is better. Secondly, there is a partial frequency overlap between the operating frequency band of the antenna device when the switching component is in the first state and the operating frequency band of the antenna device when the switching component is in the second state, so that the operating frequency band of the antenna device when the switching component is in the first state and the operating frequency band of the antenna device when the switching component is in the second state can be continuous, thereby forming a wider operating bandwidth. Under the condition of the same volume, the antenna device in this embodiment can form a wider operating bandwidth, and the working performance of the antenna device is higher. Under the condition of the same working bandwidth, compared with antenna devices that require more tuning circuits, the overall structural setting of the antenna device in this embodiment is simpler, which is conducive to the miniaturization of the antenna device, thereby freeing up more space inside the electronic device.

[0011] In one possible implementation, when the switching component is in a first state, the current of the first radiator flows into the floor of the electronic device via the first grounding point. The current of the second radiator flows into the floor of the electronic device via the second grounding point. When the switching component is in a second state, the current of the first radiator flows into the second radiator via the connecting branch. Thus, when the switching component is in the second state, the path of the current flowing from the second radiator through the connecting branch to the first radiator is shorter than the path of the current flowing from the second grounding point of the second radiator through the floor to the first grounding point of the first radiator when the switching component is in the first state. This allows the antenna device to operate in different resonant frequency bands when the switching component is in different states, which is beneficial to improving the performance of the antenna device.

[0012] In one possible implementation, when the switching component is in a first state, at the frequency of a first resonance point generated by the first and second radiators, the current in the first radiator and the current in the second radiator are in the same direction. When the switching component is in the first state, at the frequency of a second resonance point generated by the first and second radiators, the current in the first radiator and the current in the second radiator are in opposite directions. When the switching component is in a second state, at the frequency of a third resonance point generated by the first and second radiators, the current in the first radiator and the current in the second radiator are in the same direction. When the switching component is in the second state, at the frequency of a fourth resonance point generated by the first and second radiators, the current in the first radiator and the current in the second radiator are in opposite directions. Thus, when the switching component is in the first state, the antenna device can generate a first resonance point and a second resonance point based on a half-wavelength mode and a double-wavelength mode, respectively. When the switching component is in the second state, the antenna device can generate a third resonance point and a fourth resonance point based on a half-wavelength mode and a double-wavelength mode, respectively. In other words, the antenna device of the present application can generate at least four resonance points, i.e., it can operate in at least four resonance frequency bands, and the antenna device has excellent operating performance.

[0013] In one possible implementation, a first radiator includes a first end and a second end. A first grounding point is located at the first end of the first radiator. The second end of the first radiator is open. A first connection point is located between the first grounding point and the second end of the first radiator. A second radiator includes a first end and a second end. A second grounding point is located at the first end of the second radiator. The second end of the second radiator is open. A second connection point is located between the second grounding point and the second end of the second radiator. The electronic device further satisfies at least one of the following requirements: the distance from the first connection point to the first grounding point is less than the distance from the first connection point to the second end of the first radiator; and the distance from the second connection point to the second grounding point is less than the distance from the second connection point to the second end of the second radiator. In this way, the first connection point can be located close to the first grounding point of the first radiator. The second connection point can be located close to the second grounding point of the second radiator, resulting in improved performance of the antenna device and greater ease in providing broadband coverage.

[0014] In one possible implementation, the distance between the first ground point and the second end of the second radiator is a first distance. The distance between the first ground point and the second ground point is a second distance. The distance between the second ground point and the second end of the first radiator is a third distance. The electronic device further satisfies at least one of the following conditions: the first distance is less than the second distance; and the third distance is less than the second distance.

[0015] It can be understood that, compared to some antenna devices in which the two ground ends of the two radiators are arranged close to each other to form an electrical coupling, and the two open ends of the two radiators are arranged close to each other to form a magnetic coupling, in the antenna device of this embodiment, when the first distance is less than the second distance, the first grounding point is closer to the open end of the second radiator (i.e., the second end of the second radiator) relative to the second grounding point, so that the first grounding point can better form an electromagnetic coupling with the open end of the second radiator; when the third distance is less than the second distance, the second grounding point is closer to the open end of the first radiator (i.e., the second end of the first radiator) relative to the first grounding point, so that the second grounding point can better form an electromagnetic coupling with the open end of the first radiator. In this way, the first grounding point of the first radiator and the second grounding point of the second radiator can be located on different sides of the connecting branch, and the first grounding point of the first radiator and the second grounding point of the second radiator can be far away from each other. The first grounding point of the first radiator can be set closer to the second end of the second radiator (that is, the open end of the second radiator) relative to the second grounding point of the second radiator, and electromagnetic coupling can be formed between the two. The second grounding point of the second radiator can be set closer to the second end of the first radiator (that is, the open end of the first radiator) relative to the first grounding point of the first radiator, and electromagnetic coupling can be formed between the two, thereby effectively improving the radiation efficiency of the antenna device and helping to alleviate the problem of minimum radiation efficiency of the antenna device.

[0016] In one possible implementation, the distance between the second end of the second radiator and the second end of the first radiator is a fourth distance. The electronic device further satisfies at least one of the following requirements: the first distance is less than the fourth distance; and the third distance is less than the fourth distance. This allows the first and second radiators to be arranged side by side, improving coupling between them and facilitating enhanced performance of the antenna device.

[0017] In one possible implementation, the connecting branch includes a first segment and a second segment spaced apart. The first segment connects to a first connection point. The second segment connects to a second connection point. A switching component is connected in series between the first segment and the second segment. The ratio of the physical length of the first segment to the physical length of the second segment is in a range of 0.5 to 2.

[0018] It can be understood that in this embodiment, by setting the ratio of the physical length of the first segment to the physical length of the second segment within a range of 0.5 to 2, the switching component can be located in the middle of the connecting branch. Thus, when the antenna device is in single-wavelength mode, the current reaches its minimum at the middle of the connecting branch (in this embodiment, at the location of the switching component). At this time, switching the switching component between the first and second states has little impact on the current distribution, and the frequency change of the antenna device in single-wavelength mode is minimal, resulting in partial frequency overlap between the operating frequency bands in these two states. When the antenna device is in half-wavelength mode, the path of current flowing from the second radiator through the connecting branch to the first radiator is shorter than the path of current flowing from the second radiator's second grounding point through the floor to the first radiator's first grounding point. In this case, switching the switching component between the first and second states has a greater impact on the current path, resulting in a greater frequency change in the antenna device in half-wavelength mode. For example, when the switching component switches from the first state to the second state, the current between the first and second radiators primarily flows through the connecting branch, shortening the current path and increasing the frequency of the antenna device.

[0019] In other words, when the state of the switching component changes, the antenna device in this embodiment can change the length of the current path between the first and second radiators, resulting in a larger frequency change in the half-wavelength mode. Furthermore, the switching component is located in the middle of the connecting branch, resulting in a smaller frequency change in the single-wavelength mode. As a result, the operating frequency band of the antenna device when the switching component is in the first state partially overlaps with the operating frequency band of the antenna device when the switching component is in the second state, allowing the operating frequency bands of the antenna device in the first and second states to be continuous, thereby achieving a wider operating bandwidth. Thus, while maintaining the same volume, the antenna device in this embodiment only requires a connecting branch between the first and second radiators and a switching component in the middle of the connecting branch to achieve a wider operating bandwidth and higher performance. While maintaining the same operating bandwidth, the antenna device in this embodiment has a simpler overall structure than antenna devices that require more tuning circuits, facilitating miniaturization and freeing up more space within electronic devices.

[0020] In one possible implementation, the projection of the first radiator on the thickness direction of the floor of the electronic device is a first projection. The projection of the second radiator on the thickness direction of the floor is a second projection. At least one of the first projection and the second projection overlaps with the projection of the floor on the thickness direction. In this way, the first radiator, the second radiator, and the floor can be coupled to generate at least four resonance points, thereby improving the performance of the antenna device.

[0021] In one possible implementation, the angle between the lengthwise extension direction of the first projection and the lengthwise extension direction of the second projection is less than or equal to 45°. This allows the first and second radiators to better accommodate the spatial layout within the electronic device while meeting certain performance requirements. Specifically, by changing the angle between the first and second radiators, other components within the electronic device can be avoided, thereby conserving internal space within the electronic device.

[0022] In one possible implementation, the first radiator and the second radiator are arranged in parallel. This helps to increase the coupling strength between the first radiator and the second radiator, thereby improving the performance of the antenna device.

[0023] In one possible implementation, the ratio of the physical length of the first radiator to the physical length of the second radiator is in a range of 0.7 to 1.3. In this way, the coupling effect between the first radiator and the second radiator is better, which is conducive to improving the performance of the antenna device.

[0024] In a possible implementation, the width of the connecting branch is smaller than the width of the first radiator and smaller than the width of the second radiator. In this way, the performance of the antenna device is better.

[0025] In one possible implementation, the switching component includes an antenna switch. The antenna switch is used to switch the switching component between a first state and a second state. The antenna switch includes an on state and an off state. When the antenna switch is in the on state, the switching component is in the first state. When the antenna switch is in the off state, the switching component is in the second state. Thus, by providing the antenna switch within the switching component, the electrical connection between the first radiator and the second radiator is controlled by controlling the antenna switch to switch between the on state and the off state, thereby changing the current path between the first radiator and the second radiator, enabling the antenna device to generate at least four resonance points, thereby improving the performance of the antenna device.

[0026] In one possible implementation, the switching component further includes a tuning element, comprising at least one of a capacitor and an inductor. The antenna switch and the tuning element are connected in series. By connecting the tuning element in series with the antenna switch, the frequency of the antenna device can be better adjusted while controlling the electrical connection between the first radiator and the second radiator, thereby improving the operating performance of the antenna device.

[0027] In one possible implementation, the first radiator and the second radiator are located on the same side of the floor of the electronic device. The first radiator and the second radiator are mounted on a bracket. In this way, the first radiator and the second radiator can be mounted on the same bracket and located on the same plane, thereby improving coupling between the first radiator and the second radiator and enhancing the performance of the antenna device.

[0028] In one possible implementation, the electronic device further includes a frame. The frame is provided with a first slit. The frame is grounded at a first location. The first radiator includes a conductive portion of the frame located between the first location and the first slit. The first end of the first radiator is the first location of the frame. The second end of the first radiator is the end of the frame where the first slit is formed. The second radiator's projection overlaps with the floor of the electronic device in the thickness direction of the floor. In this way, the first radiator can be disposed in the space of the frame of the electronic device, thereby saving more internal space of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the implementation methods or background technologies of the present application, the drawings required for use in the implementation methods or background technologies of the present application will be described below.

[0030] FIG1a is a schematic diagram of current distribution of a dipole antenna provided in this embodiment in a half-wavelength mode;

[0031] FIG1b is a schematic diagram of current distribution of the dipole antenna shown in FIG1a in one-wavelength mode;

[0032] FIG1c is a schematic diagram of current distribution in a half-wavelength mode when the dipole antenna shown in FIG1a is bent and a floor is added;

[0033] FIG1d is a schematic diagram of current distribution in a double wavelength mode after the dipole antenna shown in FIG1a is bent and a floor is added;

[0034] FIG2a is a schematic structural diagram of an electronic device provided by the present application in some embodiments;

[0035] FIG2 b is a partially exploded schematic diagram of the electronic device shown in FIG2 a in some embodiments;

[0036] FIG3 is a schematic structural diagram of an antenna device and a floor in an electronic device;

[0037] FIG4 is a schematic diagram of an S11 curve of the antenna device shown in FIG3 ;

[0038] FIG5 a is a schematic structural diagram of an antenna device and a floor of the electronic device shown in FIG2 a in one embodiment;

[0039] FIG5b is a schematic structural diagram of the structure shown in FIG5a at another viewing angle;

[0040] FIG6 a is a schematic structural diagram of the structure shown in FIG5 a from another viewing angle;

[0041] FIG6b is a schematic structural diagram of the structure shown in FIG6a in another embodiment;

[0042] FIG7 a is a schematic diagram of the current direction of the antenna device shown in FIG5 a in a half-wavelength mode when the switching component is in the first state;

[0043] FIG7 b is a schematic diagram of the current direction of the floor shown in FIG5 a in a half-wavelength mode when the switching component is in the first state;

[0044] FIG8 a is a schematic diagram of the current direction of the antenna device shown in FIG5 a in the single wavelength mode when the switching component is in the first state;

[0045] FIG8b is a schematic diagram of the current direction of the floor shown in FIG5a in the double wavelength mode when the switching component is in the first state;

[0046] FIG9 a is a schematic diagram of the current direction of the antenna device shown in FIG5 a in a half-wavelength mode when the switching component is in the second state;

[0047] FIG9b is a schematic diagram of the current direction of the floor shown in FIG5a in the half-wavelength mode when the switching component is in the second state;

[0048] FIG10 a is a schematic diagram showing the current direction of the antenna device shown in FIG5 a in a double wavelength mode when the switching component is in the second state;

[0049] FIG10b is a schematic diagram of the current direction of the floor shown in FIG5a in the double wavelength mode when the switching component is in the second state;

[0050] FIG11 is a schematic diagram of an S11 curve of the antenna device shown in FIG5 a when the switching component is in the first state and the second state respectively;

[0051] FIG12 is a schematic structural diagram of the antenna device and the floor shown in FIG6a in another embodiment;

[0052] FIG13 is a schematic diagram of a partial structure of the antenna device shown in FIG6a in some embodiments;

[0053] FIG14 is a schematic structural diagram of the antenna device and the floor shown in FIG6a in another embodiment;

[0054] FIG15 is a schematic structural diagram of the antenna device and the floor shown in FIG6a in yet another embodiment;

[0055] FIG16 is a schematic structural diagram of the antenna device shown in FIG6a in another embodiment;

[0056] FIG17 is a schematic structural diagram of the antenna device shown in FIG6a in another embodiment;

[0057] FIG18 is a schematic structural diagram of the antenna device shown in FIG17 in another embodiment;

[0058] FIG19 is a schematic structural diagram of the antenna device shown in FIG6a in another embodiment;

[0059] FIG20 is a schematic structural diagram of a portion of the electronic device shown in FIG2a in some embodiments;

[0060] FIG21 is a schematic structural diagram of the structure shown in FIG20 from another perspective;

[0061] FIG22 is a schematic cross-sectional view of the structure shown in FIG20 taken along line AA in some embodiments;

[0062] FIG23 is a schematic structural diagram of the structure shown in FIG22 in other embodiments;

[0063] FIG24 is a schematic structural diagram of the structure shown in FIG22 in some further embodiments. DETAILED DESCRIPTION

[0064] The embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0065] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. 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. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0066] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," or "third" may explicitly or implicitly include one or more of the features.

[0067] In the embodiments of this application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0068] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in some other embodiments," and "in another embodiment" appearing in various places in 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 "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0069] Connection / connected: can refer to a mechanical connection relationship or a physical connection relationship, that is, A and B are connected or A and B are connected, which can mean that there is a fastening component (such as a screw, bolt, rivet, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0070] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be referred to as capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gap between two conductive parts.

[0071] Lumped component / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For a signal, the component's characteristics remain constant at all times, regardless of frequency.

[0072] Distributed components / devices: Unlike lumped components, if the size of the component is similar to or larger than the wavelength relative to the circuit operating frequency, then when the signal passes through the component, the characteristics of each point of the component itself will vary due to changes in the signal. At this time, the component as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed component.

[0073] Capacitance: This can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0074] Inductance: This can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive material, such as the equivalent inductance formed by the curling or rotation of the conductor.

[0075] Radiator, or antenna branch: is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, "antenna" is understood in a narrow sense as a radiator, which converts the guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted by the radiator into a certain polarized electromagnetic wave energy and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a certain polarization from a specific direction in space into modulated high-frequency current energy and transmits it to the receiver input via the feeder line.

[0076] The radiator (or antenna branch) may include a conductor with a specific shape and size, such as a linear or sheet-like shape, etc. The present application does not limit the specific shape. In one embodiment, the linear radiator can be simply referred to as a linear antenna. In one embodiment, the linear radiator can be implemented by a conductive frame, and can also be called a frame antenna. In one embodiment, the linear radiator can be implemented by a bracket conductor, and can also be called a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (for example, including thickness and width) much smaller than the wavelength (for example, the wavelength of the medium) (for example, less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (for example, the wavelength of the medium) (for example, the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave oscillator antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna typically includes two radiating branches, and each branch is fed by a feeding portion from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted-F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA, Planar Inverted F Antenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes circular, rectangular, annular, etc., and the present application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0077] The radiator (or antenna branch) may also include a slot or slot formed in a conductor, for example, a closed or semi-closed slot or slot formed in a grounded conductor surface. In one embodiment, a slotted or slotted radiator may be referred to as a slot antenna or slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slot of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slot may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slot (e.g., a closed slot or slot with an additional opening) may be referred to as an open slot antenna. In some embodiments, the slot is elongated. In some embodiments, the slot is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the slot is approximately an integer multiple of the wavelength (e.g., one wavelength). In some embodiments, the slot can be fed with a transmission line spanning one or both sides, thereby exciting a radio frequency electromagnetic field in the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a conductive frame with both ends grounded, also known as a frame antenna. In this embodiment, the slot antenna or slot antenna can be considered to include a linear radiator spaced from the floor and grounded at both ends, thereby forming a closed or semi-enclosed slot or slot. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a bracket conductor with both ends grounded, also known as a bracket antenna.

[0078] The feed circuit is a combination of all circuits used for receiving and transmitting radio frequency signals. The feed circuit can be called a feed source. The feed circuit can include a transceiver and an RF front end circuit. In some cases, the "feed circuit" is understood in a narrow sense as a radio frequency chip (RFIC, Radio Frequency Integrated Circuit), and the RFIC can be considered to include an RF front end chip and a transceiver. The feed circuit has the function of converting radio waves (for example, radio frequency signals) and electrical signals (for example, digital signals). Generally, it is considered to be part of the radio frequency.

[0079] 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 and test the characteristics of the RF front-end circuit or antenna radiator through the cable. The RF front-end circuit can be considered as the circuit portion coupled between the test socket and the transceiver.

[0080] In some embodiments, the RF front-end circuit may be integrated into a RF front-end chip in the electronic device, or the RF front-end circuit and the transceiver may be integrated into a RF chip in the electronic device.

[0081] The grounding structure / feeding structure may include a connector, such as a metal spring, through which the radiator is coupled to the floor / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure may include a transmission line / feeding line, and the grounding structure may include a grounding wire.

[0082] The feeder, also known as the transmission line, refers to the connection line between the antenna's transceiver and the radiator. Depending on the frequency and form, the transmission line can directly transmit current waves or electromagnetic waves. The connection point on the radiator to the transmission line is usually called the feed point. Transmission lines include wire transmission lines, coaxial transmission lines, waveguides, or microstrip lines. Depending on the implementation form, the transmission line can include a bracket antenna body or a glass antenna body. Depending on the carrier, the transmission line can be implemented by LCP (Liquid Crystal Polymer), FPC (Flexible Printed Circuit), or PCB (Printed Circuit Board).

[0083] Ground / Floor: This generally refers to at least a portion of any grounding layer, grounding plate, or grounding metal layer within an electronic device (such as a mobile phone), or at least a portion of any combination of any of the above grounding layers, grounding plates, or grounding components. "Ground / Floor" can be used to ground components within the electronic device. In one embodiment, "ground / floor" can include any one or more of the following: the grounding layer of the electronic device's circuit board, the grounding plate formed by the electronic device's midframe, the grounding metal layer formed by the metal film below the screen, the conductive grounding layer of the battery, and conductive or metal parts electrically connected to the above grounding layer / grounding plate / metal layer. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-to-14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as fiberglass, polymer, or the like. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a trace layer, with the trace layer and the grounding layer being electrically connected via vias. In one embodiment, components such as the display 120, touch screen, input buttons, transmitter, processor, memory, battery 140, charging circuitry, and system-on-chip (SoC) structures may be mounted on or connected to a circuit board, or electrically connected to a trace layer and / or ground layer in the circuit board. For example, a radio frequency source may be located on a trace layer.

[0084] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of a conductive material. In one embodiment, the conductive material can be any of the following: copper, aluminum, stainless steel, brass, and alloys thereof, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, a graphite-coated substrate, a copper-plated substrate, a brass-plated substrate, and an aluminum-plated substrate. Those skilled in the art will appreciate that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0085] Grounding refers to coupling with the ground / floor via a grounding structure and / or grounding circuit. In one embodiment, grounding can be achieved through physical grounding, such as achieving physical grounding at a specific location on the frame through a portion of the middle frame's structural components (or referred to as a physical ground). In one embodiment, grounding can be achieved through device grounding, such as grounding through a capacitor, inductor, resistor, or other device connected in series or parallel (or referred to as a device ground).

[0086] 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 the frequency range in which the return loss characteristic is less than -6dB. The strongest resonance point can be called the resonance point, and the frequency corresponding to the resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can generate a corresponding fundamental mode resonance.

[0087] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0088] Communication frequency band / working frequency band: Regardless of the type of antenna, it always operates within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has an operating frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the antenna's operating frequency band includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as 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. The bandwidth can be considered as a frequency range on both sides of the center frequency (for example, the resonant frequency of a dipole), where the antenna characteristics are within the acceptable value range of the center frequency.

[0089] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may overlap one or more operating frequency bands of the antenna.

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

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

[0092] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / smaller electric field can be maintained by coupling electronic devices (for example, capacitors, inductors, etc.) through the closed end. In one embodiment, the current distribution characteristics of larger current / smaller electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0093] In some embodiments, the understanding of "open end" can also be viewed from the perspective of current distribution. The open end or floating end can be understood as a point with low current on the radiator, or as a point with high electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the low current point / high electric field point.

[0094] It should be understood that coupling the radiator end at a gap (from the perspective of the radiator structure, it is similar to the radiator at the opening of the open end or the suspended end) with electronic devices (for example, capacitors, inductors, etc.) can make the radiator end a point with larger current / smaller 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.

[0095] The following examples provide a detailed description of the half wavelength mode (HWM) and the one wavelength mode (OWM). It should be understood that the following example is only one of the antenna topology structures corresponding to the half wavelength mode and one of the antenna topology structures corresponding to the one wavelength mode. These structures are not intended to limit the antenna structure of the half wavelength mode or the one wavelength mode.

[0096] Figure 1a is a schematic diagram of current distribution of the dipole antenna 101 provided in this embodiment in half-wavelength mode. Figure 1b is a schematic diagram of current distribution of the dipole antenna 101 shown in Figure 1a in one-wavelength mode.

[0097] As shown in Figure 1a, a dipole antenna 101 having a first open end and a second open end has a half-wavelength mode. This mode is characterized by the current flowing in the same direction on the dipole antenna 101, with the current amplitude being the largest in the middle and the smallest at the two ends.

[0098] As shown in Figure 1b, a dipole antenna 101 having a first open end and a second open end exhibits a one-wavelength mode. This mode is characterized by currents flowing in opposite directions on the dipole antenna 101, with the current amplitude being minimum at both ends and at the center of the dipole antenna 101, and maximum at the midpoint between the ends and the center of the dipole antenna 101.

[0099] Figure 1c is a schematic diagram of current distribution in half-wavelength mode after the dipole antenna 101 shown in Figure 1a is bent and a ground plane 102 is added. Figure 1d is a schematic diagram of current distribution in one-wavelength mode after the dipole antenna 101 shown in Figure 1a is bent and a ground plane 102 is added.

[0100] As shown in Figures 1c and 1d, the two ends of the dipole antenna 101 can be bent inward, and the first open end and the second open end are spaced apart. The dipole antenna 101 can be electrically connected to the floor 102. The floor 102 can be a PCB, a middle frame, or other metal layer of an electronic device. In this case, the dipole antenna can be composed of two radiators 103 and a portion of the floor 102, and at the same time, the half-wavelength mode and the single-wavelength mode still exist. The current generated by the dipole antenna in the half-wavelength mode is shown in Figure 1c, and the current is distributed in the same direction around the middle gap 104. The current generated by the dipole antenna in the single-wavelength mode is shown in Figure 1d, and the current is distributed in opposite directions around the middle gap 104, that is, the floor 102 plays the role of carrying the mode current between the two radiators 103 between the ends of the two bent radiators 103 (that is, the connection point with the floor 102). It should be understood that the present application does not limit the width of the gap 104 between the first open end and the second open end. Because the floor 102 between the two radiators 103 carries the mode current between the two radiators 103, even if the gap 104 between the first open end and the second open end is very wide, for example, the width of the gap 104 is greater than the length of the radiator 103, it does not affect the mode current distribution shown in Figures 1c and 1d. It should be understood that as long as the current distribution roughly meets the current distribution shown in Figures 1c and 1d, the antenna device can be considered to correspond to the half-wavelength mode HWM shown in Figure 1c and the one-wavelength mode OWM shown in Figure 1d.

[0101] It is understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0102] FIG2 a is a schematic structural diagram of the electronic device 1000 provided in the present application in some embodiments.

[0103] As shown in FIG2a , the electronic device 1000 provided in the present application can be a mobile phone, a watch, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a smart home, a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, a VR helmet, etc. The electronic device 1000 can also be a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, an electronic device 1000 in a 5G network or an electronic device 1000 in a public land mobile network (PLMN) to be evolved in the future, etc., or other devices that can receive and radiate electromagnetic wave signals. The electronic device 1000 of the embodiment shown in FIG2a is described using a mobile phone as an example.

[0104] FIG. 2 b is a partially exploded schematic diagram of the electronic device 1000 shown in FIG. 2 a in some embodiments.

[0105] As shown in Figures 2a and 2b, the electronic device 1000 may include a screen 200 and a housing 300. It will be understood that Figures 2a and 2b only schematically illustrate some components included in the electronic device 1000, and the actual shape, actual size and actual structure of these components are not limited by Figures 2a and 2b. In other embodiments, when the electronic device 1000 is a device of other forms, the electronic device 1000 may also not include the screen 200. The screen 200 can be mounted on the housing 300. Figure 2a illustrates a structure in which the screen 200 and the housing 300 form a roughly rectangular parallelepiped. The screen 200 can be used to display images, text, etc.

[0106] Exemplarily, the screen 200 may include a cover 201 (cover) and a display screen 202 (display). The cover 201 is stacked on the display screen 202. The cover 201 may be arranged close to the display screen 202, and may be mainly used to protect the display screen 202 from dust. Exemplarily, the protective cover 201 may be a glass cover (cover glass), or may be replaced with a cover 201 made of other materials, such as an ultra-thin glass material cover, a PET (Polyethylene terephthalate, polyethylene terephthalate) material cover, etc. Exemplarily, the display screen 202 may be a liquid crystal display (LCD), a light emitting diode (LED) or an organic light-emitting semiconductor (OLED), etc., and this application does not impose any restrictions on this.

[0107] Exemplarily, 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 middle frame 310 (housing) and a rear cover 320 (rear cover). The rear cover 320 and the screen 200 may be installed on opposite sides of the middle frame 310. The rear cover 320 may be fixedly connected to the middle frame 310 by bonding, welding, or the like. In this case, the screen 200, the middle frame 310, and the rear cover 320 may together enclose the internal space of the electronic device 1000. The internal space of the electronic device 1000 may be used to place internal components of the electronic device 1000, such as a battery, a speaker, a microphone, or an earpiece. The rear cover 320 may be a rear cover 320 made of a metal material, or a rear cover 320 made of a non-conductive material, such as a glass rear cover, a plastic rear cover, or the like, or a rear cover 320 made of both conductive and non-conductive materials.

[0108] For example, the middle frame 310 may include a frame 311 and a middle plate 312. The frame 311 may be disposed around the middle plate 312 and connected 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 integrally formed.

[0109] Exemplarily, the electronic device 1000 may further include a circuit board (not shown). The circuit board may be a printed circuit board (PCB). The circuit board may be located between the middle frame 310 and the back cover 320. The circuit board may carry electronic components, such as radio frequency chips, etc. Among them, the circuit board may adopt a flame retardant material (FR-4) dielectric board, a Rogers dielectric board, or a mixed dielectric board of Rogers and FR-4, etc. It should be noted that FR-4 is a code for a grade of flame retardant material, and the Rogers dielectric board is a high-frequency board. In some embodiments, the circuit board may also be located between the screen 200 and the middle frame 310. This application does not limit the specific position of the circuit board.

[0110] In some embodiments, a metal layer may be provided on the circuit board. The metal layer may be used to ground electronic components carried on the circuit board, or may be used to ground other components within the electronic device 1000 (e.g., a bracket antenna, a frame antenna, etc.). In this case, the metal layer may be referred to as a floor, a ground plane, or a grounding layer. For example, the edge of the circuit board may be considered the edge of its floor.

[0111] In some embodiments, the conductive portion of the middle frame 310 and / or the back cover 320 can also serve as a reference ground for the electronic device 1000. Components such as circuit boards in the electronic device 1000 can be grounded by being electrically connected to the middle frame 310 and / or the back cover 320. In other embodiments, the electronic device 1000 may also have other ground planes, which will not be described in detail here.

[0112] In this embodiment, the electronic device 1000 may further include an antenna device. The electronic device 1000 may communicate with a network or other devices through the antenna device using one or more of the following communication technologies. The communication technologies include Bluetooth (BT) communication technology, global positioning system (GPS) communication technology, wireless fidelity (Wi-Fi) communication technology, global system for mobile communications (GSM) communication technology, wideband code division multiple access (WCDMA) communication technology, long term evolution (LTE) communication technology, 5G communication technology, SUB-6G communication technology, and other future communication technologies.

[0113] Fig. 3 is a schematic diagram of the structure of the antenna device 500 and the floor panel 600 in the electronic device. Fig. 4 is a schematic diagram of the S11 curve of the antenna device 500 shown in Fig. 3 .

[0114] As shown in Figure 3, an antenna device 500 of an electronic device may include a first radiator 501, a second radiator 502, a feed source 503, and a switch 504. The feed source 503 may be electrically connected to one of the radiators, for example, the first radiator 501. In this case, the second radiator 502 can couple energy from the first radiator 501, thereby generating a corresponding resonance. Both the first radiator 501 and the second radiator 502 may be electrically connected to a floor 600. The first radiator 501 may be directly electrically connected to the floor 600. The second radiator 502 may be electrically connected to the floor 600 via a switch 504. Thus, the antenna device 500 can switch between a second state and a first state by controlling the switch 504 to switch between the second radiator 502 and the floor 600, thereby adjusting the frequency of the antenna device 500.

[0115] As shown in Figures 3 and 4 , when switch 504 is in the second state (e.g., switch on), both radiators (i.e., first radiator 501 and second radiator 502) are electrically connected to floorboard 600. In this state, antenna device 500 can simultaneously generate two resonances corresponding to the half-wavelength mode (HWM) and the double-wavelength mode (OWM) within a target frequency range (e.g., the range of 2.5 GHz to 6 GHz shown in Figure 4 ). In the half-wavelength mode, the current flows in the same direction on the two radiators (i.e., first radiator 501 and second radiator 502 in this embodiment). In the double-wavelength mode, the current flows in opposite directions on the two radiators. Floorboard 600 carries a portion of the antenna device 500's mode current. Specifically, floorboard 600 carries the mode current between the two radiators between their ends (their connection points with floorboard 600). Antenna device 500 can operate in the frequency bands corresponding to the two resonances. When switch 504 is in the first state (e.g., the switch is off as shown in the figure), only first radiator 501 is electrically connected to the floor. In this state, antenna device 500 generates a resonance within the target frequency range. Antenna device 500 can operate in the frequency band corresponding to this resonance. It will be appreciated that antenna device 500 in an electronic device can achieve broadband coverage within the target frequency range (e.g., within the range of 2.5 GHz to 6 GHz) by switching the switch state.

[0116] The embodiment of the present application also provides an antenna device, which may include multiple grounded radiators. At the same time, a switching component is provided between two adjacent radiators to switch the electrical connection state between the two adjacent radiators, thereby adjusting the frequency of the antenna device. Wherein, regardless of whether the switching component is in the second state or the first state, the multiple radiators can be grounded, so that the antenna device can generate two resonances based on the half-wavelength mode and the double wavelength mode regardless of whether the switching component is in the second state or the first state. In one embodiment, the operating frequency band of the antenna device when the switching component is in the first state and the operating frequency band of the antenna device when the switching component is in the second state are continuous, so that a wider operating bandwidth can be obtained.

[0117] The antenna device of the present application will be described in detail below with reference to the relevant drawings.

[0118] Figure 5a is a schematic diagram of the structure of the antenna device 100 and the floor panel 400 of the electronic device 1000 shown in Figure 2a in one embodiment. Figure 5b is a schematic diagram of the structure shown in Figure 5a from another perspective. Figure 6a is a schematic diagram of the structure shown in Figure 5a from yet another perspective.

[0119] As shown in Figures 5a to 6a, the antenna device 100 may include a first radiator 10, a second radiator 20, a connecting branch 30, a switching component 40, and a feed source 50. The first radiator 10 and the second radiator 20 may each be a metal conductor. The first radiator 10 and the second radiator 20 may be spaced apart. The connecting branch 30 may be connected between the first radiator 10 and the second radiator 20. In this embodiment, the base plate 400 may be a circuit board in the electronic device 1000. The antenna device 100 and the base plate 400 may both be located between the back cover 320 and the middle frame 310 of the electronic device 1000 (see Figure 2b).

[0120] Exemplarily, the first radiator 10 may include a first end 11 and a second end 12. The first end 11 of the first radiator 10 may be the portion of the first radiator 10 where the first grounding point 10a is located, or in other words, the portion of the first radiator 10 electrically connected to the floor 400. The first radiator 10 may be electrically connected to the floor 400 at the first grounding point 10a. For example, the first radiator 10 may be electrically connected to the floor 400 via a metal grounding member at the first grounding point 10a. In this case, the first grounding point 10a may be considered to be the center of the contact surface between the first radiator 10 and the metal grounding member. The second end 12 of the first radiator 10 is not grounded. The first end 11 of the first radiator 10 may be a grounded end, and the second end 12 of the first radiator 10 may be an open end. Current from the first radiator 10 may flow into the floor 400 through the first grounding point 10a. The second end 12 of the first radiator 10 may be suspended relative to the floor 400.

[0121] Exemplarily, the second radiator 20 may include a first end 21 and a second end 22. The first end 21 of the second radiator 20 may be the portion of the second radiator 20 where the second grounding point 20a is located, or in other words, the portion of the second radiator 20 electrically connected to the floor 400. The second radiator 20 may be electrically connected to the floor 400 at the second grounding point 20a. For example, the second radiator 20 may be electrically connected to the floor 400 at the second grounding point 20a via a metal grounding member. In this case, the second grounding point 20a may be considered to be the center of the contact surface between the second radiator 20 and the metal grounding member. The second end 22 of the second radiator 20 is not grounded. The first end 21 of the second radiator 20 may be grounded, and the second end 22 of the second radiator 20 may be open. Current from the second radiator 20 may flow into the floor 400 via the second grounding point 20a. The second end 22 of the second radiator 20 may be suspended relative to the floor 400. It should be noted that, in one embodiment, the first end 11 of the first radiator 10 may be a segment or portion of the first radiator 10 from the endpoint / end face. That is, the distance between all points on the first end 11 of the first radiator 10 and the endpoint / end face may be less than a first threshold. The first end 11 of the first radiator 10 should not be narrowly understood as a single point. For example, the first threshold may be 10% of the physical length of the first radiator 10. The term "ends" of other components referred to in this application may also be understood as the above-mentioned concepts. In one embodiment, the first end 11 may not have any end face.

[0122] For example, the distance between the first grounding point 10a of the first radiator 10 and the open-circuit end of the second radiator 20 (i.e., the second end 22 of the second radiator 20) is a first distance. The distance between the first grounding point 10a of the first radiator 10 and the second grounding point 20a of the second radiator 20 is a second distance. The first distance may be smaller than the second distance. The distance between the second grounding point 20a of the second radiator 20 and the open-circuit end of the first radiator 10 (i.e., the second end 12 of the first radiator 10) is a third distance. The first distance may be smaller than the second distance, and the third distance may be smaller than the second distance. Thus, the first grounding point 10a of the first radiator 10 and the second grounding point 20a of the second radiator 20 may be spaced apart from each other. In one embodiment, the distance between the first grounding point 10a of the first radiator 10 and the open-circuit end of the second radiator 20 may be understood as the shortest straight-line distance between the first grounding point 10a of the first radiator 10 and the open-circuit end of the second radiator 20. Other "distances" in this application may refer to the above definition as appropriate. In one embodiment, both the first distance and the third distance can be smaller than the second distance. The first grounding point 10a of the first radiator 10 can be positioned closer to the second end 22 of the second radiator 20 (i.e., the open-circuited end of the second radiator 20) relative to the second grounding point 20a of the second radiator 20, thereby forming an electromagnetic coupling therebetween. The second grounding point 20a of the second radiator 20 can be positioned closer to the second end 12 of the first radiator 10 (i.e., the open-circuited end of the first radiator 10) relative to the first grounding point 10a of the first radiator 10, thereby forming an electromagnetic coupling therebetween.

[0123] In some embodiments, the distance between the open end of the second radiator 20 and the open end of the first radiator 10 is a fourth distance. The first distance may be smaller than the fourth distance, and the third distance may be smaller than the fourth distance. This improves the electromagnetic coupling between the first ground point 10a of the first radiator 10 and the second end 22 of the second radiator 20, and improves the electromagnetic coupling between the second ground point 20a of the second radiator 20 and the second end 12 of the first radiator 10.

[0124] As shown in Figures 5a to 6a, the connecting branch 30 may be a metal conductor. The connecting branch 30 may be connected between the first radiator 10 and the second radiator 20. The connecting branch 30 may be suspended relative to the floor 400. The width of the connecting branch 30 may be smaller than the width of the first radiator 10 and smaller than the width of the second radiator 20. The connecting branch 30 may be approximately Z-shaped, that is, it may have two bends. In other embodiments, the connecting branch 30 may be approximately linear, S-shaped, or other shapes, which are not specifically limited in this application. In other embodiments, the connecting branch 30 may be fixed to the floor 400 along with the first radiator 10 and the second radiator 20 via a bracket (not shown). The bracket may be an insulator for supporting the first radiator 10 and the second radiator 20. For example, the bracket may be a plastic bracket. The first radiator 10 and the second radiator 20 may be disposed (e.g., printed) on the upper or lower surface of the bracket. In this embodiment, the connecting branch 30, the first radiator 10, and the second radiator 20 may be an integrally formed pattern or structure. In other embodiments, the connecting branch 30 may also be a transmission line.

[0125] Exemplarily, the connecting branch 30 may include a first connecting end 31 and a second connecting end 32. The first connecting end 31 may be connected between the first grounding point 10a and the second end 12 of the first radiator 10. The second connecting end 32 may be connected between the second grounding point 20a and the second end 22 of the second radiator 20. The connecting point between the connecting branch 30 and the first radiator 10 is the first connecting point 10b. The connecting point between the connecting branch 30 and the second radiator 20 is the second connecting point 20b. The first connecting point 10b may be spaced apart from the first grounding point 10a. The second connecting point 20b may be spaced apart from the second grounding point 20a. In this case, both the first connecting point 10b and the second connecting point 20b may be located between the first grounding point 10a and the second grounding point 20a. In one embodiment, the first connection point 10b and the second connection point 20b can both be located between the first grounding point 10a and the second grounding point 20a, or can be located on the line connecting the first grounding point 10a and the second grounding point 20a, or can be located around the line connecting the first grounding point 10a and the second grounding point 20a. The first grounding point 10a of the first radiator 10 and the second grounding point 20a of the second radiator 20 can be located on different sides of the connecting branch 30. The first connection point 10b can be considered the center of the portion of the surface where the first radiator 10 and the connecting branch 30 contact each other. The second connection point 20b can be considered the center of the portion of the surface where the second radiator 20 and the connecting branch 30 contact each other.

[0126] For example, the distance between the first connection point 10b and the first grounding point 10a may be less than the distance between the first connection point 10b and the second end 12 of the first radiator 10. The distance between the second connection point 20b and the second grounding point 20a may be less than the distance between the second connection point 20b and the second end 22 of the second radiator 20. In other words, the first connection point 10b may be located near the first grounding point 10a of the first radiator 10. The second connection point 20b may be located near the second grounding point 20a of the second radiator 20. In other embodiments, the distance between the first connection point 10b and the first grounding point 10a may be greater than or equal to the distance between the first connection point 10b and the second end 12 of the first radiator 10. Alternatively, the distance between the second connection point 20b and the second grounding point 20a may be greater than or equal to the distance between the second connection point 20b and the second end 22 of the second radiator 20. This application does not limit the specific positional relationship between the first connection point 10b and the first radiator 10, or the specific positional relationship between the second connection point 20b and the second radiator 20.

[0127] As shown in Figures 5a and 6a, the connecting branch 30 can be disconnected at its midpoint to form a first segment 33 and a second segment 34 spaced apart. The switching assembly 40 can be located midway between the connecting branch 30 and connected in series between the first segment 33 and the second segment 34. Any position of the connecting branch 30 that is offset from its midpoint by one-sixth of its length can be considered the midpoint of the connecting branch 30. In this case, the ratio of the physical length of the first segment 33 to the physical length of the second segment 34 of the connecting branch 30 can be in the range of 0.5 to 2.

[0128] For example, the first connection end 31 of the connecting branch 30 can be located at the end of the first segment 33 away from the switching assembly 40. The second connection end 32 of the connecting branch 30 can be located at the end of the second segment 34 away from the switching assembly 40. That is, the first segment 33 of the connecting branch 30 can be connected to the first radiator 10. The second segment 34 of the connecting branch 30 can be connected to the second radiator 20. In this embodiment, the switching assembly 40 can be located at the midpoint of the connecting branch 30. In this case, the distance from the switching assembly 40 to the first connection end 31 can be equal to the distance from the switching assembly 40 to the second connection end 32. That is, the physical length of the first segment 33 can be equal to the physical length of the second segment 34. It should be understood that when the ratio of the physical length of the first segment 33 to the physical length of the second segment 34 is within the range of 0.95 to 1.05, the physical lengths of the first segment 33 and the second segment 34 can be considered equal. The subsequent definition of equal physical lengths can refer to the above description.

[0129] For example, the switching component 40 may include an antenna switch. The switching component 40 may control the electrical connection between the first segment 33 and the second segment 34 of the connecting branch 30 through the antenna switch. In one embodiment, the switching component 40 may be used to switch the current flowing through the connecting branch 30 between an on-state and an off-state.

[0130] In one embodiment, the on-state and the off-state may be two relative states, wherein the on-state of the current on the connecting branch 30 means that, compared to the off-state, more current on the first segment 33 of the connecting branch 30 can flow through the switching component 40 into the second segment 34, and more current on the second segment 34 of the connecting branch 30 can flow through the switching component 40 into the first segment 33. The off-state of the current on the connecting branch 30 means that, compared to the on-state, less current on the first segment 33 of the connecting branch 30 can flow through the switching component 40 into the second segment 34, and less current on the second segment 34 of the connecting branch 30 can flow through the switching component 40 into the first segment 33. In other words, when the connecting branch 30 is in the on-state, the current on the connecting branch 30 is more concentrated and / or stronger than when the connecting branch 30 is in the off-state, and when the connecting branch 30 is in the off-state, the current on the connecting branch 30 is more dispersed and / or weaker than when the connecting branch 30 is in the on-state.

[0131] In one embodiment, the on-state and the off-state can be two relatively independent states. When the current on the connecting branch 30 is in the on-state, it means that substantially all of the current on the first section 33 of the connecting branch 30 can flow into the second section 34 through the switching component 40, and substantially all of the current on the second section 34 of the connecting branch 30 can flow into the first section 33 through the switching component 40. When the current on the connecting branch 30 is in the off-state, it means that substantially all of the current on the first section 33 of the connecting branch 30 cannot flow into the second section 34 through the switching component 40, and substantially all of the current on the second section 34 of the connecting branch 30 cannot flow into the first section 33 through the switching component 40.

[0132] Exemplarily, the switching component 40 can include a first state and a second state. When the switching component 40 is in the first state, the connecting branch 30 is in a disconnected state. In one embodiment, in the disconnected state of the connecting branch 30, a unidirectional current cannot flow from the first connection end 31 of the connecting branch 30 through the switching component 40 to the second connection end 32, or from the second connection end 32 to the first connection end 31 through the switching component 40. In other words, a unidirectional current cannot flow from the first section 33 of the connecting branch 30 through the switching component 40 to the second section 34, or from the second section 34 to the first section 33 through the switching component 40. At this time, the unidirectional current flowing from the first radiator 10 to the second radiator 20 through the connecting branch 30, or from the second radiator 20 to the first radiator 10 through the connecting branch 30, can be essentially in a disconnected state at the switching component 40. When the switching assembly 40 is in the second state, the first segment 33 of the connecting branch 30 is electrically connected to the second segment 34 via the switching assembly 40. A unidirectional current can flow from the first connection end 31 of the connecting branch 30 to the second connection end 32 via the switching assembly 40, or from the second connection end 32 to the first connection end 31 via the switching assembly 40. In other words, the unidirectional current can flow from the first segment 33 of the connecting branch 30 to the second segment 34 via the switching assembly 40, or from the second segment 34 to the first segment 33 via the switching assembly 40. The unidirectional current can flow between the first connection end 31 and the second connection end 32 of the connecting branch 30. At this point, the unidirectional current flowing from the first radiator 10 to the second radiator 20 via the connecting branch 30, or from the second radiator 20 to the first radiator 10 via the connecting branch 30, can be substantially connected at the switching assembly 40. It should be noted that, in this embodiment, unidirectional current on a conductor refers to the current having no reversal point on the conductor (e.g., the connecting branch 30).

[0133] For example, one of the first radiator 10 and the second radiator 20 may be provided with a feeding point. The feed source 50 may be electrically connected to the antenna device 100 at the feeding point. In this embodiment, the feeding point may be provided on the first radiator 10. The feed source 50 may be electrically connected to the first radiator 10 at the feeding point. In other embodiments, the location of the feeding point may be flexibly set based on actual design and production requirements, and this application does not impose specific limitations on this.

[0134] As shown in Figures 5a to 6a , the center plane of floor 400 is defined as the reference plane. The reference plane of floor 400 can also be understood as the plane on which floor 400 lies. For example, first radiator 10 can face the reference plane and be spaced apart from floor 400. In this case, first radiator 10 and floor 400 can be arranged in the thickness direction of floor 400.

[0135] For example, the first radiator 10 can be arranged parallel to the reference plane of the floor 400. In this case, the distance between the first radiator 10 and the floor 400 in their arrangement direction, i.e., the height of the first radiator 10 relative to the reference plane (hereinafter referred to as the height), can be less than or equal to 2 mm. In this embodiment, the height of the first radiator 10 can be 0.5 mm. For example, the relative positional relationship between the second radiator 20 and the floor 400 can refer to the relative positional relationship between the first radiator 10 and the floor 400, and will not be further described here. In some embodiments, the ratio between the height of the first radiator 10 and the height of the second radiator 20 can be in a range of 0.8 to 1.2. This allows the first radiator 10 and the second radiator 20 to be closer, resulting in better coupling between them. In other embodiments, both the first radiator 10 and the second radiator 20 can be arranged parallel to the reference plane of the floor 400. The first radiator 10 and the second radiator 20 can be arranged at the same height relative to the reference plane. In this way, the distance between the first radiator 10 and the second radiator 20 is relatively close, and the structures of the first radiator 10 and the second radiator 20 are relatively symmetrical, which improves the coupling effect between the two. It should be understood that when the ratio between the height of the first radiator 10 and the height of the second radiator 20 is within the range of 0.98 to 1.02, the first radiator 10 and the second radiator 20 can be considered to be arranged at the same height relative to the reference plane. In other embodiments, the first radiator 10 and the second radiator 20 can both be arranged parallel to the reference plane of the floor 400. The height of the first radiator 10 can also be different from the height of the second radiator 20, that is, the first radiator 10 and the second radiator 20 can be offset relative to the reference plane in the thickness direction of the floor 400. For example, the height of the first radiator 10 can be lower than the height of the second radiator 20.

[0136] For example, the projection of the first radiator 10 on the reference plane of the floor 400 is a first projection. The projection of the second radiator 20 on the reference plane of the floor 400 is a second projection. The first projection of the first radiator 10 and the second projection of the second radiator 20 can be arranged side by side. Arranged side by side means that the length extension direction of the first projection and the length extension direction of the second projection are not collinear. The length extension direction of the first projection refers to the length extension direction of the rectangle enclosing the first projection, defined by the outer contour of the first projection. For example, when the first radiator 10 is partially bent, the first projection of the first radiator 10 may also be partially bent. In this case, the rectangle enclosing the first projection, defined by the outer contour of the first projection, is indicated by a dashed line in FIG6B . The length extension direction of the second projection can refer to the definition of the length extension direction of the first projection.

[0137] For example, the first projection and the second projection may overlap in the width direction of the first projection. The first projection and the second projection may form an angle. The angle between the longitudinal extension direction of the first projection and the longitudinal extension direction of the second projection may be less than or equal to 45°. In this embodiment, the angle α (not shown) between the axis T1 of the first projection and the axis T2 of the second projection may be less than or equal to 45°. This allows for better coupling between the first radiator 10 and the second radiator 20 of the antenna device 100, resulting in improved performance. Furthermore, the arrangement of the first radiator 10 and the second radiator 20 may be more compact, facilitating a reduction in the overall size of the antenna device 100. When the antenna device 100 is used in an electronic device 1000, the antenna device 100 has a more compact structure, freeing up more internal space within the electronic device 1000. In this embodiment, the first projection of the first radiator 10 and the second projection of the second radiator 20 may be arranged side by side and parallel to each other, meaning that the angle α between the first axis T1 of the first projection and the second axis T2 of the second projection is 0°. At the same time, the first projection and the second projection can completely overlap in the width direction of the first projection. Thus, the distance from the first ground point 10a of the first radiator 10 to the second end 22 of the second radiator 20 can be equal to or approximately equal to the distance from the second ground point 20a of the second radiator 20 to the second end 12 of the first radiator 10. This improves the coupling effect between the first radiator 10 and the second radiator 20, resulting in a more symmetrical current distribution on the antenna device 100 and better performance of the antenna device 100.

[0138] Exemplarily, the projection of at least one of the first radiator 10 and the second radiator 20 on the reference plane of the floor 400 at least partially overlaps with the floor 400. That is, at least a portion of the first projection of the first radiator 10 and / or at least a portion of the second projection of the second radiator 20 are located on the floor 400. In this embodiment, the first radiator 10 and the second radiator 20 may be located on the same side of the floor 400. The first projection of the first radiator 10 may be located entirely on the floor 400. The second projection of the second radiator 20 may also be located entirely on the floor 400. In other embodiments, at least a portion of the first projection of the first radiator 10 may be located on the floor 400, while the second projection of the second radiator 20 may be located outside the floor 400. In this case, the second radiator 20 may be located on a peripheral side of the floor 400, facing the peripheral side of the floor 400. The first radiator 10 and the second radiator 20 may be located on different sides of the floor 400. In this way, the relative position setting between the first radiator 10 and the second radiator 20 in the antenna device 100 can be more flexible, thereby adapting to different device layouts in different electronic devices 1000 .

[0139] For example, both the first radiator 10 and the second radiator 20 can be in the shape of an elongated strip. It should be understood that the elongated strip means that the length of the component can be much greater than the width of the component. The first radiator 10 and / or the second radiator 20 can be in the shape of a completely straight strip, or the first radiator 10 and / or the second radiator 20 can be partially curved, while still extending generally in a straight strip to avoid other components / structures (e.g., screw holes) in the electronic device 1000.

[0140] For example, the ratio of the physical length of the first radiator 10 to the physical length of the second radiator 20 can be in the range of 0.7 to 1.3. For example, the ratio of the physical length of the first radiator 10 to the physical length (i.e., mechanical length or geometric length) of the second radiator 20 can be 0.8, 0.83, 0.92, 1, 1.05, 1.14, or 1.2. In this embodiment, the ratio of the physical length of the first radiator 10 to the physical length of the second radiator 20 can be 1. In this way, the physical lengths of the first radiator 10 and the second radiator 20 can be close, thereby improving coupling between the first radiator 10 and the second radiator 20, thereby improving the performance of the antenna device 100. In other embodiments, the first radiator 10 and / or the second radiator 20 can also have other shapes, and this application does not specifically limit the shapes of the first radiator 10 and / or the second radiator 20.

[0141] Figure 7a is a schematic diagram of the current direction of the antenna device 100 shown in Figure 5a in half-wavelength mode when the switching component 40 is in the first state. Figure 7b is a schematic diagram of the current direction of the floor panel 400 shown in Figure 5a in half-wavelength mode when the switching component 40 is in the first state. It should be noted that the current direction in the antenna device 100 and the floor panel 400 is not fixed, but changes periodically over time. In this embodiment, the current directions illustrated in Figures 7a, 7b, and subsequent figures are schematic diagrams of the current directions of the antenna device 100 and the floor panel 400 at a specific moment.

[0142] As shown in Figures 7a and 7b, when the switching component 40 is in the first state, the antenna device 100 can generate unidirectional currents on the first radiator 10 and the second radiator 20 based on a half-wavelength mode. A unidirectional current can also be generated on the connecting branch 30. The direction of the current on the first section 33 of the connecting branch 30 is the same as the direction of the current on the second section 34. The current can reach a maximum value at the middle position of the connecting branch 30 (in this embodiment, at the position of the switching component 40). The current of the first radiator 10 can flow into the floor 400 via the first grounding point 10a. The current of the second radiator 20 can flow into the floor 400 via the second grounding point 20a. The current between the first radiator 10 and the second radiator 20 can mainly flow through the floor 400. At this time, the first radiator 10 and the second radiator 20 can generate a first resonance point.

[0143] For example, in the first radiator 10, current may flow from the first grounding point 10a of the first radiator 10 to the second end 12 of the first radiator 10. In the second radiator 20, current may flow from the second end 22 of the second radiator 20 to the second grounding point 20a of the second radiator 20. On the floor 400, current may flow from the second grounding point 20a of the second radiator 20 to the first grounding point 10a of the first radiator 10. In other words, current may flow through the first radiator 10, the floor 400, and the second radiator 20.

[0144] Figure 8a is a schematic diagram of the current direction of the antenna device 100 shown in Figure 5a in the single wavelength mode when the switch component 40 is in the first state. Figure 8b is a schematic diagram of the current direction of the floor panel 400 shown in Figure 5a in the single wavelength mode when the switch component 40 is in the first state.

[0145] As shown in Figures 8a and 8b, when the switching component 40 is in the first state, the antenna device 100 can generate reverse currents in the first radiator 10 and the second radiator 20 based on a double wavelength mode. A reverse current can be generated in the connecting branch 30. The direction of the current in the first section 33 of the connecting branch 30 is opposite to the direction of the current in the second section 34. The current can reach a minimum value at the middle position of the connecting branch 30. The current between the first radiator 10 and the second radiator 20 can mainly flow through the connecting branch 30. In other words, the current of the first radiator 10 can flow into the second radiator 20 via the connecting branch 30. At this time, the first radiator 10 and the second radiator 20 can generate a second resonance point.

[0146] For example, in the first radiator 10, current can flow from the first grounding point 10a of the first radiator 10 to the second end 12 of the first radiator 10. In the second radiator 20, current can flow from the second grounding point 20a of the second radiator 20 to the second end 22 of the second radiator 20. In the connecting branch 30, current can flow from the first connecting end 31 to the location of the switching component 40, reverse at the location of the switching component 40, and then flow from the location of the switching component 40 to the second connecting end 32. In other words, current can flow through the first radiator 10, the connecting branch 30, and the second radiator 20.

[0147] It should be noted that, in this embodiment, the generation of unidirectional currents in two conductors (e.g., the first radiator 10 and the second radiator 20) may mean that the currents in both conductors have no reversal points and the currents in both conductors flow in the same direction. The generation of reverse currents in one conductor may mean that the currents in that conductor have at least one reversal point. The generation of reverse currents in two conductors may mean that the currents in both conductors have no reversal points and the currents in the two conductors flow in opposite directions. In other embodiments, when the number of conductors is three or more, the generation of unidirectional currents or reverse currents in multiple conductors may be understood accordingly as described above.

[0148] Figure 9a is a schematic diagram of the current direction of the antenna device 100 shown in Figure 5a in the half-wavelength mode when the switch component 40 is in the second state. Figure 9b is a schematic diagram of the current direction of the floor panel 400 shown in Figure 5a in the half-wavelength mode when the switch component 40 is in the second state.

[0149] As shown in Figures 9a and 9b, when the switching component 40 is in the second state, the antenna device 100 can generate unidirectional currents in the first radiator 10 and the second radiator 20 based on a half-wavelength mode. A unidirectional current can also be generated in the connecting branch 30. The direction of the current in the first section 33 of the connecting branch 30 is the same as the direction of the current in the second section 34. The current can reach its maximum value at the center of the connecting branch 30. The path of the current flowing from the second radiator 20 through the connecting branch 30 to the first radiator 10 is shorter than the path of the current flowing from the second grounding point 20a of the second radiator 20 through the floor 400 to the first grounding point 10a of the first radiator 10. In this case, the current between the first radiator 10 and the second radiator 20 can flow primarily through the connecting branch 30. In other words, the current in the first radiator 10 can flow from the connecting branch 30 to the second radiator 20. The first radiator 10 and the second radiator 20 can generate a third resonance point. 7 b and 9 b respectively illustrate the current direction of the floor 400 when the switching component 40 is in the first state and the second state. The current on the floor 400 between the first radiator 10 and the second radiator 20 is significantly weakened.

[0150] For example, in the first radiator 10, current can flow from the first grounding point 10a of the first radiator 10 to the second end 12 of the first radiator 10. In the second radiator 20, current can flow from the second end 22 of the second radiator 20 to the second grounding point 20a of the second radiator 20. In the connecting branch 30, current can flow from the second connecting end 32 to the first connecting end 31 through the switching component 40. In other words, current can flow through the first radiator 10, the connecting branch 30, and the second radiator 20.

[0151] Figure 10a is a schematic diagram of the current direction of the antenna device 100 shown in Figure 5a in the single wavelength mode when the switch component 40 is in the second state. Figure 10b is a schematic diagram of the current direction of the floor panel 400 shown in Figure 5a in the single wavelength mode when the switch component 40 is in the second state.

[0152] As shown in Figures 10a and 10b, when the switching component 40 is in the second state, the antenna device 100 can generate reverse currents in the first radiator 10 and the second radiator 20 based on a double wavelength mode. A reverse current can be generated in the connecting branch 30. The direction of the current in the first section 33 of the connecting branch 30 is opposite to the direction of the current in the second section 34. The current can reach a minimum value at the middle position of the connecting branch 30. The current between the first radiator 10 and the second radiator 20 can mainly flow through the connecting branch 30. In other words, the current of the first radiator 10 can flow into the second radiator 20 via the connecting branch 30. The first radiator 10 and the second radiator 20 can generate a fourth resonance point.

[0153] For example, in the first radiator 10, current can flow from the first grounding point 10a of the first radiator 10 to the second end 12 of the first radiator 10. In the second radiator 20, current can flow from the second grounding point 20a of the second radiator 20 to the second end 22 of the second radiator 20. In the connecting branch 30, current can flow from the first connecting end 31 to the location of the switching component 40, reverse at the location of the switching component 40, and then flow from the location of the switching component 40 to the second connecting end 32. In other words, current can flow through the first radiator 10, the connecting branch 30, and the second radiator 20.

[0154] FIG. 11 is a schematic diagram of an S11 curve of the antenna device 100 shown in FIG. 5 a when the switching component 40 is in the first state and the second state respectively.

[0155] Curve 1 represents the S11 curve of the antenna device 100 when the switch component 40 is in the first state, and Curve 2 represents the S11 curve of the antenna device 100 when the switch component 40 is in the second state.

[0156] As shown in FIG11 , when the switching component 40 is in the first state, the antenna device 100 can simultaneously generate two corresponding resonances based on the half-wavelength mode and the double-wavelength mode, and has two resonance points (in this embodiment, the first resonance point H1 and the second resonance point H2). That is, the antenna device 100 can operate in two resonance frequency bands when the switching component 40 is in the first state, and the distance between the two resonance frequency bands is relatively close. In one embodiment, the two resonance frequency bands can be continuous to achieve broadband coverage. It should be understood that when the ratio between the two frequencies corresponding to the two resonance points is in the range of 1:1 to 1:1.2, the two resonance frequency bands in which the two resonance points are located can be considered to be continuous. Among them, the operating frequency band of the antenna device 100 in the half-wavelength mode is lower, and the operating frequency band of the antenna device 100 in the double-wavelength mode is higher. The frequency of the second resonance point H2 is higher than the frequency of the first resonance point H1. In this embodiment, the operating frequency of the antenna device 100 in the half-wavelength mode can be 3.92 GHz. The operating frequency of the antenna device 100 in the double-wavelength mode can be 4.04 GHz.

[0157] When the switching component 40 is in the second state, the antenna device 100 can simultaneously generate two corresponding resonances based on the half-wavelength mode and the single-wavelength mode, and has two resonance points (in this embodiment, the third resonance point H3 and the fourth resonance point H4), that is, the antenna device 100 can operate in two resonance frequency bands when the switching component 40 is in the second state, and the distance between the two resonance frequency bands is relatively close. In one embodiment, the two resonance frequency bands can be continuous, and broadband coverage can be achieved. Among them, the resonance frequency band of the antenna device 100 in the half-wavelength mode is higher, and the operating frequency band of the antenna device 100 in the single-wavelength mode is lower. The frequency of the fourth resonance point H4 is higher than the frequency of the third resonance point H3. The frequency of the third resonance point H3 is also higher than the frequency of the second resonance point H2. In this embodiment, the operating frequency of the antenna device 100 in the half-wavelength mode can be 4.18 GHz. The operating frequency of the antenna device 100 in the single-wavelength mode can be 4.09 GHz.

[0158] At this point, the operating frequency of the antenna device 100 in the double-wavelength mode when the switching component 40 is in the first state is higher, and the operating frequency of the antenna device 100 in the double-wavelength mode when the switching component 40 is in the second state is lower, and there is partial frequency overlap between the operating frequency bands in the two states. Specifically, when the ratio between the frequency of the second resonance point H2 corresponding to the operating frequency of the antenna device 100 in the double-wavelength mode when the switching component 40 is in the first state and the frequency of the third resonance point H3 corresponding to the operating frequency of the antenna device 100 in the double-wavelength mode when the switching component 40 is in the second state is within the range of 1:1 to 1:1.1, it can be considered that there is partial frequency overlap between the two operating frequency bands. The operating frequency of the antenna device 100 in the half-wavelength mode when the switching component 40 is in the first state is lower, and the operating frequency of the antenna device 100 in the half-wavelength mode when the switching component 40 is in the second state is higher. That is, when the switching component 40 switches from the first state to the second state, the frequency of the antenna device 100 in the double-wavelength mode is less affected, and the frequency in the half-wavelength mode is more affected.

[0159] In other words, the antenna device 100 in this embodiment can generate at least two resonances regardless of whether the switching component 40 is in the first state or the second state, that is, it can operate in at least two resonant frequency bands. The two resonant frequency bands can be continuous, so that broadband coverage can be formed respectively. At the same time, the working frequency band of the antenna device 100 when the switching component 40 is in the first state and the working frequency band of the antenna device 100 when the switching component 40 is in the second state have partial frequency overlap, so that the working frequency band of the antenna device 100 when the switching component 40 is in the first state and the working frequency band of the antenna device 100 when the switching component 40 is in the second state can be continuous, thereby forming a wider working bandwidth. It should be noted that in this embodiment, in the same S11 curve, when the S11 value of the connection point of two frequency bands is below -3db, the two frequency bands can be regarded as continuous.

[0160] In other embodiments, as shown in FIG12 , the distance between the first connection point 10b and the first grounding point 10a can also be greater than the distance between the first connection point 10b and the second end 12 of the first radiator 10. The distance between the second connection point 20b and the second grounding point 20a can also be greater than the distance between the second connection point 20b and the second end 22 of the second radiator 20. That is, the first connection point 10b can be disposed close to the second end 22 of the second radiator 20. The second connection point 20b can be disposed close to the second end 12 of the first radiator 10. When the switching component 40 is in the first state, the antenna device 100 can operate in two frequency bands, and the distance between the two frequency bands is relatively close, and the two frequency bands are continuous, thereby achieving broadband coverage. When the switching component 40 is in the second state, the antenna device 100 can operate in two frequency bands, and the distance between the two frequency bands is relatively far, thereby achieving dual-band coverage. Among them, the operating frequency of the antenna device 100 in the double wavelength mode when the switching component 40 is in the first state is higher, and the operating frequency of the antenna device 100 in the double wavelength mode when the switching component 40 is in the second state is lower, and there is partial frequency overlap in the operating frequency bands in the two states, so that the operating frequency band of the antenna device 100 when the switching component 40 is in the first state and the operating frequency band of the antenna device 100 when the switching component 40 is in the second state can be continuous, thereby forming a wider operating bandwidth.

[0161] It is understood that, compared to antenna device 500, in which the two radiators are independent and non-contacting, a switch 504 is provided at the ground terminal of one of the radiators to control the electrical connection between the radiator and the floor 600. By changing the electrical connection between the radiator and the floor 600, the frequency of antenna device 500 is adjusted. By switching switch 504, antenna device 500 can generate three resonances. In this embodiment, antenna device 100 includes a connecting branch 30 between the first radiator 10 and the second radiator 20, and a switching component 40 is provided to electrically connect the connecting branch 30. By controlling the switching component 40 to switch between a first state and a second state, the current in the connecting branch 30 is switched between an off state and a on state, and the electrical connection between the first radiator 10 and the second radiator 20 is controlled, thereby changing the current flow path of the antenna device 100 and adjusting the frequency of the antenna device 100. The first connection point 10b and the second connection point 20b can be located between the first grounding point 10a and the second grounding point 20a, that is, the first grounding point 10a and the second grounding point 20a can be located away from each other and can be located on different sides of the connection branch 30. In this way, when the switching component 40 switches from the first state to the second state, the operating frequency of the antenna device 100 in the half-wavelength mode and the operating frequency of the antenna device 100 in the double wavelength mode will both increase. In other words, in this embodiment, the first radiator 10 and the second radiator 20 can be electrically connected to the floor 400 regardless of whether the switching component 40 is in the first state or the second state, so that the antenna device 100 can operate in two resonant frequency bands regardless of whether the switching component 40 is in the first state or the second state. That is, the entire antenna device 100 can generate four resonances, and the operating performance is better.

[0162] Secondly, in this embodiment, the switching component 40 is located in the middle of the connecting branch 30. Thus, when the antenna device 100 is in the single-wavelength mode, the current reaches its minimum value at the middle of the connecting branch 30 (in this embodiment, at the location of the switching component 40). At this time, switching between the first and second states of the switching component 40 has little effect on the current distribution, and the frequency change of the antenna device 100 in the single-wavelength mode is small, resulting in partial frequency overlap in the operating frequency bands of the two states. When the antenna device 100 is in the half-wavelength mode, the path of current flowing from the second radiator 20 through the connecting branch 30 to the first radiator 10 is shorter than the path of current flowing from the second grounding point 20a of the second radiator 20 through the floor 400 to the first grounding point 10a of the first radiator 10. In this case, switching between the first and second states of the switching component 40 has a greater impact on the current path, resulting in a greater frequency change in the half-wavelength mode of the antenna device 100. For example, when the switching element 40 switches from the first state to the second state, the current between the first radiator 10 and the second radiator 20 mainly flows through the connecting branch 30 , the current path becomes shorter, and the frequency of the antenna device 100 increases.

[0163] In other words, when the state of the switching component 40 changes, the antenna device 100 in this embodiment can change the length of the current path between the first radiator 10 and the second radiator 20, resulting in a larger frequency change in the half-wavelength mode. Furthermore, the switching component 40 is located in the middle of the connecting branch 30, resulting in a smaller frequency change in the single-wavelength mode. Thus, the operating frequency band of the antenna device 100 when the switching component 40 is in the first state partially overlaps with the operating frequency band when the switching component 40 is in the second state, allowing the operating frequency bands of the antenna device 100 when the switching component 40 is in the first state and the second state to be continuous, thereby achieving a wider operating bandwidth. Thus, while maintaining the same volume, the antenna device 100 in this embodiment only requires the connecting branch 30 between the first radiator 10 and the second radiator 20, and the switching component 40 in the middle of the connecting branch 30, to achieve a wider operating bandwidth and higher performance. Given the same operating bandwidth, compared to antenna devices that require more tuning circuits, the overall structure of the antenna device 100 in this embodiment is simpler, facilitating miniaturization of the antenna device 100, thereby freeing up more space within the electronic device 1000. Furthermore, when the switching component 40 is located in the middle of the connecting branch 30 but not at the midpoint of the connecting branch 30, that is, when the switching component 40 is slightly offset from the midpoint of the connecting branch 30, the switching component 40 can still provide a certain frequency adjustment for the antenna device 100.

[0164] Furthermore, compared to some antenna devices that place the two grounded ends of two radiators close to each other to form an electrical coupling, and place the two open-circuited ends of two radiators close to each other to form a magnetic coupling, in this embodiment, the first grounding point 10a of the first radiator 10 and the second grounding point 20a of the second radiator 20 of the antenna device 100 are located on different sides of the connecting branch 30. The first grounding point 10a of the first radiator 10 and the second grounding point 20a of the second radiator 20 can be located away from each other. In this way, the first grounding point 10a of the first radiator 10 can be located close to the second end 22 of the second radiator 20 (i.e., the open-circuited end of the second radiator 20), forming an electromagnetic coupling therebetween. The second grounding point 20a of the second radiator 20 can be located close to the second end 12 of the first radiator 10 (i.e., the open-circuited end of the first radiator 10), forming an electromagnetic coupling therebetween. This effectively improves the radiation efficiency of the antenna device 100 and helps alleviate the problem of the minimum radiation efficiency of the antenna device 100.

[0165] In some embodiments, as shown in FIG13 , the switching component 40 may further include a tuning element. The tuning element may include at least one of a capacitor and an inductor. Exemplarily, the tuning element may be connected in series between the connecting branch 30 and the antenna switch. The antenna switch and the tuning element may be used together to control the electrical connection state between the first section 33 and the second section 34 of the connecting branch 30. The switching component 40 may be electrically connected to the end face of the first section 33 close to the second section 34, or may be electrically connected at a certain distance from the end face of the first section 33 close to the second section 34, such as 1 mm, 2 mm, etc. from the above-mentioned end face. The setting of the switching component 40 electrically connected to the second section 34 is roughly the same as the setting of the switching component 40 electrically connected to the first section 33, and will not be repeated here.

[0166] In some other embodiments, the switching component 40 may also include multiple tuning elements. The antenna switch may have multiple gating circuits. In this embodiment, the number of gating circuits in the antenna switch may be equal to the number of tuning elements, for example, four each. Two of the four tuning elements may each include a capacitor, and the remaining two may each include an inductor. The two inductors may be L1 and L2, respectively. The two capacitors may be C1 and C2, respectively. In this case, the multiple capacitors and inductors may be connected in series in a one-to-one correspondence within the multiple gating circuits to form multiple switching circuits. The multiple switching circuits may be connected in parallel. It is understood that by connecting the tuning element in series between the connecting branch 30 and the antenna switch, the frequency of the antenna device 100 can be adjusted while controlling the electrical connection between the first section 33 and the second section 34 of the connecting branch 30, thereby improving the operating performance of the antenna device 100. Furthermore, in this embodiment, by providing multiple tuning elements in a one-to-one correspondence with the multiple gating circuits in the antenna switch to form multiple switching circuits, the entire antenna device 100 can operate in a wider range of frequency bands, thereby improving the performance of the antenna device 100. For ease of understanding, the switching component 40 is outlined by a dotted line in Figure 13. The present application does not limit the specific form of the switching component 40.

[0167] FIG14 is a schematic structural diagram of the antenna device 100 and the floor 400 shown in FIG6 a in another embodiment.

[0168] As shown in Figure 14 , the structure of the antenna device 100 in this embodiment is substantially the same as the structure of the antenna device 100 shown in Figure 6a , and the identical parts are not repeated here. The difference is that in this embodiment, the first radiator 10 and / or the second radiator 20 can be substantially flat. The first radiator 10 and / or the second radiator 20 can be relatively wide. For example, the first radiator 10 and the second radiator 20 can both be relatively wide, and both widths can be less than 0.5λ. In this way, by increasing the width of the first radiator 10 and / or the second radiator 20, the operating bandwidth of the antenna device 100 can be effectively expanded, thereby improving the operating performance of the antenna device 100.

[0169] FIG15 is a schematic structural diagram of the antenna device 100 and the floor panel 400 shown in FIG6 a in yet another embodiment.

[0170] As shown in FIG15 , the structure of the antenna device 100 in this embodiment is substantially the same as that of the antenna device 100 shown in FIG6 a , and the identical parts are not repeated here. The difference is that the antenna device 100 in this embodiment may further include a third radiator 60 . The number of connecting branches 30 may be two. The number of switching components 40 may be two. The two switching components 40 may be located in a one-to-one correspondence at the middle position of the two connecting branches 30 . For example, the third radiator 60 may be located on the side of the second radiator 20 away from the first radiator 10 . One of the connecting branches 30 may be connected between the first radiator 10 and the second radiator 20 . The other connecting branch 30 may be connected between the second radiator 20 and the third radiator 60 . In this case, the antenna device 100 can switch between four states through the cooperation of the two switching components 40 . The four states may be: both switching components 40 are in the first state; both switching components 40 are in the second state; the switching component 40 between the first radiator 10 and the second radiator 20 is in the first state, and the switching component 40 between the second radiator 20 and the third radiator 60 is in the second state; the switching component 40 between the first radiator 10 and the second radiator 20 is in the second state, and the switching component 40 between the second radiator 20 and the third radiator 60 is in the first state. In other embodiments, the antenna device 100 may further include a fourth radiator, a fifth radiator, and so on. The antenna device 100 may further include more connecting branches 30 and switching components 40. The number of connecting branches 30 may be the number of radiators minus one. The number of connecting branches 30 may be the same as the number of switching components 40.

[0171] It can be understood that the antenna device 100 in this embodiment is provided with more radiators and connecting branches 30 are provided in two adjacent radiators, and a switching component 40 is provided at the middle position of each connecting branch 30, so that the antenna device 100 can achieve switching of more states through the cooperation of multiple switching components 40, thereby forming a wider working bandwidth, which is beneficial to improving the working performance of the antenna device 100.

[0172] FIG16 is a schematic structural diagram of the antenna device 100 shown in FIG6 a in another embodiment.

[0173] As shown in FIG16 , the structure of the antenna device 100 in this embodiment is substantially the same as that of the antenna device 100 shown in FIG6 a , and the same parts are not repeated here. The difference is that the connecting branch 30 can also be in a straight line, that is, there is no bend in the connecting branch 30. Thus, compared with the connecting branch 30 of the antenna device 100 shown in FIG6 a , the length of the connecting branch 30 in this embodiment is shorter. When the switching component 40 is in the second state and the antenna device 100 is in the half-wavelength mode, the current flow path between the first radiator 10 and the second radiator 20 is shorter, thereby increasing the operating frequency of the antenna device 100 in this state, which is beneficial to improving the operating performance of the antenna device 100.

[0174] Fig. 17 is a schematic diagram of the structure of the antenna device 100 shown in Fig. 6a in another embodiment. Fig. 18 is a schematic diagram of the structure of the antenna device 100 shown in Fig. 17 in another embodiment.

[0175] As shown in Figure 17 , the structure of the antenna device 100 in this embodiment is substantially identical to that of the antenna device 100 shown in Figure 6a , and the common features are not further described. The difference is that the first projection of the first radiator 10 and the second projection of the second radiator 20 may only partially overlap in the width direction of the first projection. In this case, the first projection and the second projection may be partially offset, meaning that the first radiator 10 and the second radiator 20 may be partially offset in the length direction of the first radiator 10.

[0176] In other embodiments, as shown in FIG18 , the first projection of the first radiator 10 and the second projection of the second radiator 20 may not overlap in the width direction of the first projection. In this case, the first projection and the second projection may be completely staggered, that is, the first radiator 10 and the second radiator 20 may be completely staggered in the length direction of the first radiator 10. It will be appreciated that in this embodiment, by staggering the first radiator 10 and the second radiator 20 in the length direction of the first radiator 10, the arrangement of the first radiator 10 and the second radiator 20 can better adapt to the internal space of the electronic device 1000, and the arrangement of the first radiator 10 and the second radiator 20 is more flexible.

[0177] FIG19 is a schematic structural diagram of the antenna device 100 shown in FIG6 a in another embodiment.

[0178] As shown in FIG19 , the structure of the antenna device 100 in this embodiment is substantially the same as the structure of the antenna device 100 shown in FIG6 a , and the identical parts are not further described. The difference lies in that an angle is formed between the first projection of the first radiator 10 and the second projection of the second radiator 20. The angle α between the first axis T1 of the first projection and the axis T2 of the second projection can be 30°. Thus, by arranging the first radiator 10 and the second radiator 20 at an angle, the arrangement of the first radiator 10 and the second radiator 20 can better adapt to the internal space of the electronic device 1000, and the arrangement of the first radiator 10 and the second radiator 20 is more flexible. In other embodiments, the angle α between the first axis T1 of the first projection and the axis T2 of the second projection can be 10°, 12°, 23°, 45°, etc.

[0179] Figure 20 is a schematic diagram of a portion of the electronic device 1000 shown in Figure 2a in some embodiments. Figure 21 is a schematic diagram of the structure shown in Figure 20 from another perspective. Figure 22 is a schematic diagram of a cross-section of the structure shown in Figure 20 taken along line AA in some embodiments.

[0180] As shown in Figures 20 to 22, the antenna device 100 in this embodiment has substantially the same structure as the antenna device 100 shown in Figure 5a, and the common parts are not repeated here. The differences between the two are described in detail below. In this embodiment, the middle plate 312 can be made of metal. The middle plate 312 can serve as the floor 400 of the antenna device 100. One of the first radiator 10 and the second radiator 20 can be a frame antenna, that is, one of the first radiator 10 and the second radiator 20 is part of the frame 311 of the electronic device 1000.

[0181] By way of example, the first radiator 10 may be a frame antenna. The width of the first radiator 10 may be perpendicular to the floor 400, that is, the width of the first radiator 10 may be the height direction of the frame 311. The frame 311 may have a first slit 311a. The frame 311 may be grounded at a first location 311b. In this case, the portion of the frame 311 between the first location 311b and the first slit 311a may constitute the first radiator 10, that is, the first radiator 10 may be a frame antenna. The end of the first radiator 10 near the first slit 311a is the open end of the first radiator 10 (that is, the second end 12 of the first radiator 10). The end of the first radiator 10 near the first location 311b is the first end 11 of the first radiator 10. The first grounding point 10a of the first radiator 10 may be located at the first location 311b, that is, at the first end 11. The first end 11 may have no end surface. The first radiator 10 may be electrically connected to the floor 400 at the first grounding point 10a.

[0182] For example, the second radiator 20 can be located on a side of the first radiator 10 that is close to the floor 400. The second radiator 20 can be mounted on the floor 400. The second radiator 20 and the floor 400 can overlap in their projections in the thickness direction of the floor 400. The first radiator 10 and the second radiator 20 can be arranged side by side. In this embodiment, the feeding point can be located on the second radiator 20. The feed source 50 can be located inside the frame 311 and can be electrically connected to the second radiator 20 at the feeding point. The switching assembly 40 can be fixed to the floor 400 via some fixings and electrically connected to the connecting branch 30. In other embodiments, the feeding point can also be located on the first radiator 10. In other embodiments, the metal portion of the back cover 320 can also serve as the floor 400. In this case, the second radiator 20 can also be mounted on the back cover 320.

[0183] For example, the frame 311 may further include a second gap 311b. The second gap 311b may communicate with the first gap 311a. The second gap 311b may separate the first radiator 10 from the floor 400 in the thickness direction of the floor 400. Both the first gap 311a and the second gap 311b may be filled with a non-metallic medium 70 (e.g., plastic). In this case, the distance between the projection of the first radiator 10 in the thickness direction of the floor 400 (i.e., the first projection) and the floor 400 is zero.

[0184] It is understood that, compared to multiple radiators being disposed on the frame 311, the first radiator 10 of the antenna device 100 in this embodiment is disposed on the frame 311, and the second radiator 20 is disposed on the floor 400. In this way, the second radiator 20 does not occupy the space of other frame antennas in the electronic device 1000, thereby freeing up more space in the frame 311 to meet the different configuration requirements of the electronic device 1000. For example, more antennas can be disposed on the frame 311 of the electronic device 1000, thereby improving the communication performance of the electronic device 1000 and enhancing the user experience.

[0185] Secondly, in this embodiment, a first slit 311a and a second slit 311b are provided in the frame 311 to respectively disconnect the first radiator 10 from the rest of the frame 311 and separate the first radiator 10 from the floor 400, thereby ensuring a good radiation environment for the first radiator 10. Furthermore, the second slit 311b separates the first radiator 10 from the floor 400 in the thickness direction of the floor 400, ensuring that the distance between the projection of the first radiator 10 on the plane of the floor 400 and the floor 400 is zero. This effectively reduces the distance between the frame 311 of the electronic device 1000 and the display screen 202, thereby effectively increasing the screen 200 ratio of the electronic device 1000 and improving the user experience.

[0186] In other embodiments, as shown in FIG23 , the frame 311 may not have the second gap 311b. The floor 400 may also have a third gap 401. The third gap 401 may separate the first radiator 10 from the floor 400 along the width direction of the second radiator 20. In this case, both the first gap 311a and the third gap 401 may be filled with a non-metallic medium 70.

[0187] In yet other embodiments, as shown in FIG24 , the frame 311 may be provided with a second gap 311b while the floor 400 may also be provided with a third gap 401. The second gap 311b may communicate with the third gap 401. In this case, the first gap 311a, the second gap 311b, and the third gap 401 may all be filled with a non-metallic medium 70.

[0188] 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 scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0189] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0190] The above are only some of the embodiments of this application, and the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device (1000), characterized in that: The invention comprises a first radiator (10), a second radiator (20), a connecting branch (30), a switching component (40) and a feed source (50), wherein the first radiator (10) and the second radiator (20) are arranged at intervals, the first radiator (10) is provided with a first grounding point (10a) and a first connecting point (10b) arranged at intervals, the second radiator (20) is provided with a second grounding point (20a) and a second connecting point (20b) arranged at intervals, the first connecting point (10b) and the second connecting point (20b) are located between the first grounding point (10a) and the second grounding point (20a), one end of the connecting branch (30) is electrically connected to the first connecting point (10b), the other end of the connecting branch (30) is electrically connected to the second connecting point (20b), the switching component (40) is electrically connected to the connecting branch (30), and the feed source (50) is electrically connected to one of the first radiator (10) and the second radiator (20); The switching component (40) includes a first state and a second state. When the switching component (40) is in the first state, the first radiator (10) and the second radiator (20) are used to generate at least a first resonance point (H1) and a second resonance point (H2); when the switching component (40) is in the second state, the first radiator (10) and the second radiator (20) are used to generate at least a third resonance point (H3) and a fourth resonance point (H4). The frequency of the first resonance point (H1) and the frequency of the second resonance point (H2) are both lower than the frequency of the third resonance point (H3), and the frequency of the first resonance point (H1) and the frequency of the second resonance point (H2) are also lower than the frequency of the fourth resonance point (H4).

2. The electronic device (1000) according to claim 1, characterized in that: The frequency of the second resonance point (H2) is higher than the frequency of the first resonance point (H1); The frequency of the fourth resonance point (H4) is higher than the frequency of the third resonance point (H3), and the ratio between the frequency of the second resonance point (H2) and the frequency of the third resonance point (H3) is in the range of 1:1 to 1:1.

1.

3. The electronic device (1000) according to any one of claims 1 to 2, characterized in that: When the switching component (40) is in the first state, the current of the first radiator (10) flows into the floor (400) of the electronic device (1000) via the first grounding point (10a), and the current of the second radiator (20) flows into the floor (400) of the electronic device (1000) via the second grounding point (20a); When the switching component (40) is in the second state, the current of the first radiator (10) flows into the second radiator (20) via the connecting branch (30).

4. The electronic device (1000) according to any one of claims 1 to 3, characterized in that: When the switching component (40) is in the first state, at the frequency of the first resonance point (H1) generated by the first radiator (10) and the second radiator (20), the current on the first radiator (10) and the current on the second radiator (20) are in the same direction; When the switching component (40) is in the first state, at the frequency of the second resonance point (H2) generated by the first radiator (10) and the second radiator (20), the current on the first radiator (10) and the current on the second radiator (20) are opposite.

5. The electronic device (1000) according to any one of claims 1 to 4, characterized in that: When the switching component (40) is in the second state, at the frequency of the third resonance point (H3) generated by the first radiator (10) and the second radiator (20), the current on the first radiator (10) and the current on the second radiator (20) are in the same direction; When the switching component (40) is in the second state, at the frequency of the fourth resonance point (H4) generated by the first radiator (10) and the second radiator (20), the current on the first radiator (10) and the current on the second radiator (20) are opposite.

6. The electronic device (1000) according to any one of claims 1 to 5, characterized in that: The first radiator (10) comprises a first end (11) and a second end (12), the first grounding point (10a) is located at the first end (11) of the first radiator (10), the second end (12) of the first radiator (10) is an open end, and the first connection point (10b) is located between the first grounding point (10a) and the second end (12) of the first radiator (10); The second radiator (20) comprises a first end (21) and a second end (22), the second grounding point (20a) is located at the first end (21) of the second radiator (20), the second end (22) of the second radiator (20) is an open end, and the second connection point (20b) is located between the second grounding point (20a) and the second end (22) of the second radiator (20); The electronic device (1000) further satisfies at least one of the following limitations: The distance from the first connection point (10b) to the first grounding point (10a) is smaller than the distance from the first connection point (10b) to the second end (12) of the first radiator (10); The distance between the second connection point (20b) and the second grounding point (20a) is smaller than the distance between the second connection point (20b) and the second radiation point (20a). The distance between the second end (22) of the projectile (20) and the second end (22) of the projectile (20).

7. The electronic device (1000) according to claim 6, characterized in that: The distance between the first grounding point (10a) and the second end (22) of the second radiator (20) is a first distance, the distance between the first grounding point (10a) and the second grounding point (20a) is a second distance, and the distance between the second grounding point (20a) and the second end (12) of the first radiator (10) is a third distance; The electronic device (1000) further satisfies at least one of the following limitations: The first distance is smaller than the second distance; The third distance is smaller than the second distance.

8. The electronic device (1000) according to claim 7, characterized in that: The distance between the second end (22) of the second radiator (20) and the second end (12) of the first radiator (10) is a fourth distance; The electronic device (1000) further satisfies at least one of the following limitations: The first distance is smaller than the fourth distance; The third distance is smaller than the fourth distance.

9. The electronic device (1000) according to any one of claims 1 to 8, characterized in that: The connecting branch (30) comprises a first section (33) and a second section (34) which are arranged at intervals, the first section (33) being connected to the first connection point (10b), the second section (34) being connected to the second connection point (20b), the switching component (40) being connected in series between the first section (33) and the second section (34), and the ratio of the physical length of the first section (33) to the physical length of the second section (34) being in the range of 0.5 to 2.

10. The electronic device (1000) according to any one of claims 1 to 9, characterized in that: The projection of the first radiator (10) on the thickness direction of the floor (400) of the electronic device (1000) is a first projection, the projection of the second radiator (20) on the thickness direction of the floor (400) is a second projection, and at least one of the first projection and the second projection overlaps with the projection of the floor (400) on the thickness direction of the floor (400).

11. The electronic device (1000) according to claim 10, characterized in that: An angle between a length extension direction of the first projection and a length extension direction of the second projection is less than or equal to 45°.

12. The electronic device (1000) according to any one of claims 1 to 11, characterized in that: The first radiator (10) and the second radiator (20) are arranged in parallel.

13. The electronic device (1000) according to any one of claims 1 to 12, characterized in that: The ratio of the physical length of the first radiator (10) to the physical length of the second radiator (20) is in the range of 0.7 to 1.

3.

14. The electronic device (1000) according to any one of claims 1 to 13, characterized in that: The width of the connecting branch (30) is smaller than the width of the first radiator (10), and smaller than the width of the second radiator (20).

15. The electronic device (1000) according to any one of claims 1 to 14, characterized in that: The switching component (40) comprises an antenna switch, and the antenna switch is used to realize the switching of the switching component (40) between the first state and the second state; The antenna switch includes a connected state and a disconnected state. When the antenna switch is in the connected state, the switching component (40) is in the first state. When the antenna switch is in the disconnected state, the switching component (40) is in the second state.

16. The electronic device (1000) according to claim 15, characterized in that: The switching component (40) further includes a tuning element, wherein the tuning element includes at least one of a capacitor and an inductor, and the antenna switch is connected in series with the tuning element.

17. The electronic device (1000) according to any one of claims 1 to 16, characterized in that: The first radiator (10) and the second radiator (20) are located on the same side of the floor (400) of the electronic device (1000), and the first radiator (10) and the second radiator (20) are arranged on a bracket.

18. The electronic device (1000) according to any one of claims 1 to 17, characterized in that: The electronic device (1000) further comprises a frame (311), the frame (311) being provided with a first slit (311a), the frame (311) being grounded at a first position (311b), the first radiator (10) comprising a conductive portion of the frame (311) located between the first position (311b) and the first slit (311a), the first end (11) of the first radiator (10) being the first position (311b) of the frame (311), and the second end (12) of the first radiator (10) being the end of the frame (311) where the first slit (311a) is formed; The second radiator (20) overlaps with the floor of the electronic device (1000) in projection in the thickness direction of the floor.

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