Electronic device

Abstract

The application provides an electronic device. The electronic device comprises a first radiator, a second radiator, a connecting branch, a switching component and a feed source. The first radiator is provided with a first grounding point and a first connecting point. The second radiator is provided with a second grounding point and a second connecting point. The first connecting point and the second connecting 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 connecting point, and the other end of the connecting branch is electrically connected to the second connecting 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 first radiator and the second radiator are used to generate at least a first resonant point and a second resonant point when the switching component is in a first state, and generate at least a third resonant point and a fourth resonant point when the switching component is in a second state. The frequency of the first resonant point and the frequency of the second resonant point are both less than the frequency of the third resonant point and the frequency of the fourth resonant point.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, and particularly relates to an electronic device. BACKGROUND

[0002] With the continuous development of mobile phones, mobile phones with a large screen proportion are increasingly favored by users. However, as the screen proportion increases, the space available for setting an antenna in the mobile phone becomes smaller and smaller, resulting in poor working performance of the antenna and failing to meet the use requirements. How to obtain an antenna with a small size and good working performance has become the research direction of the current mobile phone antenna. SUMMARY

[0003] The embodiments of the present application provide an electronic device, aiming to provide an electronic device with a small size and good working performance of an antenna device.

[0004] The electronic device provided by the present application comprises a first radiator, a second radiator, a connecting branch, a switching assembly and a feed source. The first radiator and the second radiator are arranged at intervals. The radiator is provided with a first grounding point and a first connecting point arranged at intervals. The second radiator is provided with a second grounding point and a second connecting point arranged at intervals. The first connecting point and the second connecting 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 connecting point. The other end of the connecting branch is electrically connected to the second connecting point. The switching assembly 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 assembly comprises a first state and a second state. When the switching assembly 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 assembly 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 less 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 less than the frequency of the fourth resonance point.

[0005] It can be understood that, compared with the two radiators in the antenna device being independent of each other and not in contact with each other, and the switch being arranged at the ground end of one of the two radiators to control the electrical connection state of the one of the two radiators with the floor, the electrical connection state of the one of the two radiators with the floor is changed to adjust the frequency of the antenna device. By switching the switch, the antenna device can generate three resonances. In the embodiment, the connection branch is arranged between the first radiator and the second radiator, and the switching component is arranged to be electrically connected to the connection branch. By controlling the switching component to switch between the first state and the second state, the electrical current on the connection branch is switched between the open state and the closed state, and the electrical connection state between the first radiator and the second radiator is controlled, the current flow path of the antenna device is changed, and thus the frequency of the antenna device is adjusted. The first connection point and the second connection point can be located between the first ground point and the second ground point, that is, the first ground point and the second ground point can be arranged away from each other, and the two can be located on different sides of the connection branch. In this way, when the switching component is switched from the first state to the second state, the operating frequency of the antenna device in the half-wavelength mode and the operating frequency of the antenna device in the one-wavelength mode are both increased. In other words, in the embodiment, the first radiator and the second radiator 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 work in two resonance 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.

[0006] Secondly, compared with some antenna devices in which the two ground ends of the two radiators are arranged close to each other to form electrical coupling, and the two open ends of the two radiators are arranged close to each other to form magnetic coupling, in the embodiment, the first connection point of the first radiator and the second connection point of the second radiator 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 arranged away from each other. In this way, the first ground point of the first radiator can be arranged close to the second end portion (that is, the open end) of the second radiator, and electromagnetic coupling can be formed therebetween, and the second ground point of the second radiator can be arranged close to the second end portion (that is, the open end) of the first radiator, and electromagnetic coupling can be formed therebetween, so that the radiation efficiency of the antenna device can be effectively improved, and the problem of minimum radiation efficiency of the antenna device can be alleviated.

[0007] In a 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 the range of 1:1 to 1:1.1.

[0008] In this way, the frequencies of the multiple resonance points of the antenna device are different, so that the antenna device can work in multiple frequency bands, and the performance of the antenna device is better. In addition, the working frequency band of the antenna device when the switching component is in the first state partially overlaps with the working frequency band of the antenna device when the switching component is in the second state, so that the working frequency band of the antenna device when the switching component is in the first state and the working frequency band of the antenna device when the switching component is in the second state can be continuous, thereby forming a wider working bandwidth. In the case of the same volume, the antenna device in the embodiment can form a wider working bandwidth, and the working performance of the antenna device is higher. In the case of the same working bandwidth, compared with the antenna device which needs to be provided with more tuning circuits, the overall structure of the antenna device in the embodiment is simpler, which is conducive to the miniaturization of the antenna device, thereby releasing more space inside the electronic device.

[0009] In a possible implementation, when the switching component is in the first state, the current of the first radiator flows into the floor of the electronic device through the first grounding point. The current of the second radiator flows into the floor of the electronic device through the second grounding point. When the switching component is in the second state, the current of the first radiator flows into the second radiator through the connecting branch. In this way, when the switching component is in the second state, the path of the current from the second radiator to the first radiator through the connecting branch is shorter than the path of the current from the second radiator to the first radiator through the floor when the switching component is in the first state, so that the antenna device can work in different resonance frequency bands when the switching component is in different states, which is conducive to improving the performance of the antenna device.

[0010] In a possible implementation, when the switching component is in the first state, the currents on the first radiator and the second radiator are in the same direction at the frequency of the first resonance point generated by the first radiator and the second radiator. When the switching component is in the first state, the currents on the first radiator and the second radiator are in opposite directions at the frequency of the second resonance point generated by the first radiator and the second radiator. When the switching component is in the second state, the currents on the first radiator and the second radiator are in opposite directions at the frequency of the third resonance point generated by the first radiator and the second radiator. When the switching component is in the second state, the currents on the first radiator and the second radiator are in the same direction at the frequency of the fourth resonance point generated by the first radiator and the second radiator. In this way, when the switching component is in the first state, the antenna device can generate the first resonance point and the second resonance point based on the half-wave mode and the one-wave mode respectively. When the switching component is in the second state, the antenna device can generate the third resonance point and the fourth resonance point based on the half-wave mode and the one-wave mode respectively. In other words, the antenna device in the application can generate at least four resonance points, that is, can work in at least four resonance frequency bands, and the working performance of the antenna device is better.

[0011] In a possible implementation, the first radiator includes a first end and a second end. The first grounding point is located at the first end of the first radiator. The second end of the first radiator is an open end. The first connection point is located between the first grounding point and the second end of the first radiator. The second radiator includes a first end and a second end. The second grounding point is located at the first end of the second radiator. The second end of the second radiator is an open end. The 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 conditions: a distance from the first connection point to the first grounding point is less than a distance from the first connection point to the second end of the first radiator; a distance from the second connection point to the second grounding point is less than a distance from the second connection point to the second end of the second radiator. In this way, the first connection point can be arranged close to the first grounding point of the first radiator. The second connection point can be arranged close to the second grounding point of the second radiator, the performance of the antenna device is better, and the antenna device is more likely to form a wide frequency coverage.

[0012] In a possible implementation, a distance between the first grounding point and the second end of the second radiator is a first distance. A distance between the first grounding point and the second grounding point is a second distance. A distance between the second grounding 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; the third distance is less than the second distance.

[0013] It can be understood that, compared with some antenna devices in which two grounding ends of two radiators are arranged close to each other to form electrical coupling, and two open ends of the two radiators are arranged close to each other to form magnetic coupling. When the first distance is less than the second distance in the antenna device in this embodiment, the first grounding point is closer to the open end (that is, the second end) of the second radiator relative to the second grounding point, so that the first grounding point can better form 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 (that is, the second end) of the first radiator relative to the first grounding point, so that the second grounding point can better form 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 connection 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 arranged closer to the second end (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 first grounding point of the first radiator and the second grounding point of the second radiator. The second grounding point of the second radiator can be arranged closer to the second end (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 first grounding point of the first radiator and the second grounding point of the second radiator. Therefore, the radiation efficiency of the antenna device can be effectively improved, and the problem of minimum radiation efficiency of the antenna device can be alleviated.

[0014] In a possible implementation, a 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 definitions: the first distance is less than the fourth distance; and the third distance is less than the fourth distance. In this way, the first radiator and the second radiator can be relatively arranged side by side, and the coupling effect between the first radiator and the second radiator is better, which is beneficial to improve the performance of the antenna device.

[0015] In a possible implementation, the connecting branch includes a first segment and a second segment arranged at intervals. The first segment is connected to the first connecting point. The second segment is connected to the second connecting point. The switching component is connected in series between the first segment and the second segment. A ratio of a physical length of the first segment to a physical length of the second segment is in a range of 0.5 to 2.

[0016] It can be understood that, in the embodiment, by setting the ratio of the physical length of the first segment to the physical length of the second segment in the range of 0.5 to 2, the switching component can be located at a middle position of the connecting branch. In this way, when the antenna device is in the one-wavelength mode, the current reaches a minimum value at the middle position of the connecting branch (i.e., the position of the switching component in the embodiment), at this time, the switching component switching between the first state and the second state has less influence on the current distribution, the frequency of the antenna device in the one-wavelength mode changes less, and the working frequency bands in the two states have some frequency overlap. When the antenna device is in the half-wavelength mode, the path of the current flowing from the second radiator to the first radiator through the connecting branch is shorter than the path of the current flowing from the second connecting point of the second radiator to the first connecting point of the first radiator through the ground. At this time, the switching component switching between the first state and the second state has greater influence on the current path, and the frequency of the antenna device in the half-wavelength mode changes more. For example, when the switching component is switched from the first state to the second state, the current between the first radiator and the second radiator mainly flows through the connecting branch, the current path is shortened, and the frequency of the antenna device is increased.

[0017] In other words, the antenna device in the embodiment can change the length of the current flow path between the first radiator and the second radiator when the state of the switching component changes, so that the frequency change of the antenna device in the half-wavelength mode is large. Meanwhile, the switching component is located at the middle position of the connecting branch, so that the frequency change of the antenna device in the one-wavelength mode is small. In this way, 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 partially overlap, 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. In this way, under the condition of the same volume, the antenna device in the embodiment only needs to be provided with the connecting branch between the first radiator and the second radiator and the switching component at the middle position of the connecting branch, so as to form a wider operating bandwidth and have higher operating performance. Under the condition of the same operating bandwidth, compared with the antenna device that needs to be provided with more tuning circuits, the overall structure of the antenna device in the embodiment is simpler, which is conducive to the miniaturization of the antenna device and thus can release more space inside the electronic device.

[0018] In a possible implementation, a projection of the first radiator in the thickness direction of the floor of the electronic device is a first projection. A projection of the second radiator in the thickness direction of the floor is a second projection. At least one of the first projection and the second projection overlaps with a projection of the floor in the thickness direction of the floor. In this way, the first radiator, the second radiator, and the floor can be coupled together to generate at least four resonance points, and the antenna device has better operating performance.

[0019] In a possible implementation, an included angle between the length extension direction of the first projection and the length extension direction of the second projection is less than or equal to 45°. In this way, the first radiator and the second radiator can be more adaptive to the space arrangement inside the electronic device while meeting certain performance requirements, that is, other components inside the electronic device can be avoided by changing the included angle between the first radiator and the second radiator, which is conducive to saving the internal space of the electronic device.

[0020] In a possible implementation, the first radiator and the second radiator are arranged in parallel. In this way, by arranging the first radiator and the second radiator in parallel, the coupling strength between the first radiator and the second radiator can be improved, and the performance of the antenna device can be improved.

[0021] In a possible implementation, a 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, and the performance of the antenna device can be improved.

[0022] 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.

[0023] In a possible implementation, the switching component includes an antenna switch. The antenna switch is configured to switch the switching component 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 is in the first state. When the antenna switch is in the disconnected state, the switching component is in the second state. In this way, the antenna switch is arranged in the switching component, and the electrical connection state between the first radiator and the second radiator is controlled by switching the antenna switch between the connected state and the disconnected state, so as to change the current path between the first radiator and the second radiator, so that the antenna device can generate at least four resonance points, and the performance of the antenna device is better.

[0024] In a possible implementation, the switching component further includes a tuning element, and the tuning element includes at least one of a capacitor and an inductor. The antenna switch is connected in series with the tuning element. In this way, by arranging the tuning element in series with the antenna switch, the frequency of the antenna device can be better adjusted while the electrical connection state between the first radiator and the second radiator is controlled, so as to improve the working performance of the antenna device.

[0025] In a 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 arranged on the support. In this way, the first radiator and the second radiator can be arranged on the same support, and the first radiator and the second radiator can be located in the same plane, so that the coupling effect between the first radiator and the second radiator is better, and the performance of the antenna device is improved.

[0026] In a possible implementation, the electronic device further includes a frame. The frame is provided with a first gap. The frame is grounded at a first position. The first radiator includes a conductive part between the first position of the frame and the first gap. The first end of the first radiator is the first position of the frame. The second end of the first radiator is the end of the frame where the first gap is formed. The second radiator overlaps the floor of the electronic device in the thickness direction of the floor. In this way, the first radiator can be arranged by using the space of the frame of the electronic device, so that more internal space of the electronic device can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0028] Figure 1ais a schematic diagram of current distribution of the dipole antenna in a half-wavelength mode according to an embodiment of the present application;

[0029] Figure 1b is Figure 1a a schematic diagram of current distribution of the dipole antenna in a one-wavelength mode according to an embodiment of the present application;

[0030] Figure 1c is Figure 1a a schematic diagram of current distribution of the dipole antenna in a half-wavelength mode according to an embodiment of the present application;

[0031] Figure 1d is Figure 1a a schematic diagram of current distribution of the dipole antenna in a one-wavelength mode according to an embodiment of the present application;

[0032] Figure 2a is a schematic diagram of the structure of an electronic device according to an embodiment of the present application;

[0033] Figure 2b is Figure 2a a schematic diagram of a partially exploded view of the electronic device according to an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of the structure of an antenna device and a ground plate in an electronic device according to an embodiment of the present application;

[0035] Figure 4 is Figure 3 a schematic diagram of an S11 curve of the antenna device according to an embodiment of the present application;

[0036] Figure 5a is Figure 2a a schematic diagram of the structure of an antenna device and a ground plate in an electronic device according to an embodiment of the present application;

[0037] Figure 5b is Figure 5a a schematic diagram of the structure of the structure according to an embodiment of the present application from another perspective;

[0038] Figure 6a is Figure 5a a schematic diagram of the structure of the structure according to an embodiment of the present application from yet another perspective;

[0039] Figure 6b is Figure 6a a schematic diagram of the structure of the structure according to an embodiment of the present application in other embodiments;

[0040] Figure 7a is Figure 5a a schematic diagram of the current direction of the antenna device in a half-wavelength mode when the switching assembly is in a first state according to an embodiment of the present application;

[0041] Figure 7b is Figure 5aA schematic diagram of the current direction of the floor in half-wavelength mode when the switching component is in the first state;

[0042] Figure 8a is Figure 5a A schematic diagram of the current direction of the antenna device in one-wavelength mode when the switching component is in the first state;

[0043] Figure 8b is Figure 5a A schematic diagram of the current direction of the floor in one-wavelength mode when the switching component is in the first state;

[0044] Figure 9a is Figure 5a A schematic diagram of the current direction of the antenna device in half-wavelength mode when the switching component is in the second state;

[0045] Figure 9b is Figure 5a A schematic diagram of the current direction of the floor in half-wavelength mode when the switching component is in the second state;

[0046] Figure 10a is Figure 5a A schematic diagram of the current direction of the antenna device in one-wavelength mode when the switching component is in the second state;

[0047] Figure 10b is Figure 5a A schematic diagram of the current direction of the floor in one-wavelength mode when the switching component is in the second state;

[0048] Figure 11 is Figure 5a A schematic diagram of the S11 curve of the antenna device when the switching component is in the first state and the second state respectively;

[0049] Figure 12 is Figure 13 A schematic diagram of the structure of the antenna device and the floor in another embodiment;

[0050] Figure 13 is Figure 14 A schematic diagram of the partial structure of the antenna device in some embodiments;

[0051] Figure 6a is Figure 14 A schematic diagram of the structure of the antenna device and the floor in another embodiment;

[0052] Figure 6a is Figure 15 A schematic diagram of the structure of the antenna device and the floor in another embodiment;

[0053] Figure 6a is Figure 15 a structural schematic view of the antenna device in other embodiments;

[0054] Figure 6a is Figure 16 a structural schematic view of the antenna device in other embodiments;

[0055] Figure 6a is Figure 16 a structural schematic view of the antenna device in other embodiments;

[0056] Figure 6a is Figure 6a a structural schematic view of the antenna device in other embodiments;

[0057] Figure 17 is Figure 6a a structural schematic view of the partial structure of the electronic device in some embodiments;

[0058] Figure 18 is Figure 17 a structural schematic view of the structure from another perspective;

[0059] Figure 17 is Figure 6a a cross-sectional structural schematic view of the structure along line A-A in some embodiments;

[0060] Figure 18 is Figure 19 a structural schematic view of the structure in other embodiments;

[0061] Figure 6a is Figure 19 a structural schematic view of the structure in yet other embodiments. DETAILED DESCRIPTION

[0062] The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0063] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connecting" should be interpreted broadly, for example, "connecting" can be detachable connection, or can be non-detachable connection, can be direct connection, or can be indirect connection through intermediate medium. Among them, "fixed connection" refers to the connection of each other and the relative position relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer" and the like, is only the direction of the drawing, therefore, the orientation language used is for better and clearer description and understanding of the embodiments of the present application, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0064] In the embodiments of the present application, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0065] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0066] In the description of the present application, the reference "one embodiment" or "some embodiments" means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in another embodiment" and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but not limited to", unless otherwise specifically emphasized.

[0067] Connection / connection: 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 means that there is a fastening member (such as a screw, a bolt, a rivet, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to be separated.

[0068] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupled connection and / or indirect coupled connection. Direct coupling can also be referred to as "electrical connection", which means that the components are in physical contact and electrically conductive; it can also be understood as a form of connection between different components in the circuit structure through the entity line such as copper foil or wire on the printed circuit board (PCB) that can transmit electrical signals; "indirect coupling" can be understood as electrical conduction between two conductors through space / non-contact. In an embodiment, indirect coupling can also be referred to as capacitive coupling, for example, through the coupling between the gap between two conductive parts to form an equivalent capacitor to achieve signal transmission.

[0069] Lumped element / device: refers to the collective name of elements whose size is much smaller than the wavelength relative to the operating frequency of the circuit. For signals, the characteristics of the elements remain fixed at all times, regardless of frequency.

[0070] Distributed element / device: unlike lumped elements, if the size of the element is similar to or larger than the wavelength relative to the operating frequency of the circuit, then when the signal passes through the element, the characteristics of each point in the element will be different due to the change of the signal, and at this time the element as a whole cannot be regarded as a single body with fixed characteristics, but should be called a distributed element.

[0071] Capacitance: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to components that exhibit capacitance, such as capacitive elements; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by the gap between two conductive parts.

[0072] Inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to components that exhibit inductance, such as inductive elements; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive part, such as the equivalent inductance formed by the curling or rotation of the conductor.

[0073] Radiator, or antenna element: is a device used to receive / send electromagnetic wave radiation in an antenna. In some cases, "antenna" is understood in a narrow sense as a radiator, which changes the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy for radiation and reception of radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator through the feeder, and is converted into electromagnetic wave energy of a certain polarization by the radiator and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a certain polarization from a certain direction in space into modulated high-frequency current energy, which is delivered to the input end of the receiver through the feeder.

[0074] The radiator (or antenna element) can include a conductor with a specific shape and size, such as a wire, or a patch, etc. The application does not limit the specific shape. In an embodiment, the wire radiator can be referred to as a wire antenna. In an embodiment, the wire radiator can be implemented by a conductive bezel, which can also be referred to as a bezel antenna. In an embodiment, the wire radiator can be implemented by a support conductor, which can also be referred to as a support antenna. In an embodiment, the wire diameter (e.g., including thickness and width) of the wire radiator, or the wire antenna, is much smaller (e.g., less than 1 / 16 of the wavelength) than the wavelength (e.g., the dielectric wavelength), and the length can be comparable to the wavelength (e.g., the length is around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of the wire antenna include a dipole antenna, a half-wave vibrator antenna, a monopole antenna, a loop antenna, and an inverted F antenna (also referred to as IFA). For example, for a dipole antenna, each dipole antenna generally includes two radiating elements, and each element is fed by a feed from the feed end of the radiating element. For example, the inverted F antenna (IFA) can be obtained by adding a ground path to a monopole antenna. The IFA antenna has a feed point and a ground point, and is called an inverted F antenna because its side view is in the shape of an inverted F. In an embodiment, the patch radiator can include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also referred to as PIFA). In an embodiment, the patch radiator can be implemented by a planar conductor (such as a conductive patch or a conductive coating, etc.). In an embodiment, the patch radiator can include a conductive patch, such as a copper patch, etc. In an embodiment, the patch radiator can include a conductive coating, such as silver paste, etc. The shape of the patch radiator includes a circle, a rectangle, a ring, etc. The structure of the microstrip antenna generally includes a dielectric substrate, a radiator, and a ground plate, wherein the dielectric substrate is arranged between the radiator and the ground plate.

[0075] The radiators (or antenna elements) can also include slots or gaps formed on the conductors, such as closed or semi-closed slots or gaps formed on the grounded conductor plane. In one embodiment, the radiators with slots or gaps can be referred to as slot antennas or gap antennas. In one embodiment, the slots or gaps of the slot antennas / gap antennas have a radial dimension (e.g., including width) much smaller than the wavelength (e.g., dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and a length dimension comparable to the wavelength (e.g., dielectric wavelength) (e.g., around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, the radiators with closed slots or gaps can be referred to as closed slot antennas. In one embodiment, the radiators with semi-closed slots or gaps (e.g., with openings added to the closed slots or gaps) can be referred to as open slot antennas. In some embodiments, the gap shape is long and thin. In some embodiments, the length of the gap is about half a wavelength (e.g., dielectric wavelength). In some embodiments, the length of the gap is about an integer number of wavelengths (e.g., one dielectric wavelength). In some embodiments, the gap can be fed by a transmission line that is connected across one or both sides of the gap, whereby the gap is excited with a radio frequency electromagnetic field and radiates electromagnetic waves into space. In one embodiment, the radiators of the slot antennas or gap antennas can be implemented by conductive frames that are grounded at both ends, which can also be referred to as frame antennas; in this embodiment, the slot antennas or gap antennas can be considered to include linear radiators that are spaced apart from the ground plane and grounded at both ends, thereby forming closed or semi-closed slots or gaps. In one embodiment, the radiators of the slot antennas or gap antennas can be implemented by support conductors that are grounded at both ends, which can also be referred to as support antennas.

[0076] The feed circuit is a combination of all circuits for reception and transmission of radio frequency signals. The feed circuit can be referred to as a feed source. The feed circuit can include a transceiver and a radio frequency front end circuit. In some cases, the term "feed circuit" is understood in a narrow sense as a radio frequency integrated circuit (RFIC), which can be considered to include a radio frequency front end chip and a transceiver. The feed circuit has the function of converting radio waves (e.g., radio frequency signals) and electrical signals (e.g., digital signals). In general, it is considered to be part of the radio frequency.

[0077] In some embodiments, the electronic device can also include a test seat (or referred to as a radio frequency seat or a radio frequency test seat). The test seat can be used to insert a coaxial cable to test the characteristics of the radio frequency front end circuit or the radiators of the antenna through the cable. The radio frequency front end circuit can be considered to be a circuit portion coupled between the test seat and the transceiver.

[0078] In some embodiments, the radio frequency front-end circuit can be integrated as a radio frequency front-end chip in the electronic device, or the radio frequency front-end circuit and the transceiver can be integrated as a radio frequency chip in the electronic device.

[0079] The ground structure / feeding structure can include a connector, such as a metal spring, and the radiator is coupled to the floor through the ground structure / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure can include a transmission line / feeding line, and the ground structure can include a ground line.

[0080] The feeding line, also known as the transmission line, refers to the connection line between the transceiver of the antenna and the radiator. The transmission line can directly transmit current waves or electromagnetic waves according to different frequencies and forms. The connection between the radiator and the transmission line is usually referred to as the feeding point. The transmission line includes a wire transmission line, a coaxial transmission line, a waveguide, or a microstrip line, etc. The transmission line can include a support antenna body or a glass antenna body according to the implementation form. The transmission line can be implemented by LCP (Liquid Crystal Polymer), FPC (Flexible Printed Circuit), or PCB (Printed Circuit Board) according to the carrier.

[0081] Ground / floor: can refer to at least a part of any ground layer, or ground plate, or ground metal layer, etc. in an electronic device (such as a mobile phone), or at least a part of any combination of the above ground layer, or ground plate, or ground component, etc. The ground / floor can be used for grounding of components in the electronic device. In one embodiment, the ground / floor can include any one or more of the following: a ground layer of a circuit board of the electronic device, a ground plate formed by a middle frame of the electronic device, a ground metal layer formed by a metal film under the screen, a conductive ground layer of the battery, and a conductive or metal component electrically connected to the above ground layer / ground plate / metal layer. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-14 layer board with 8, 10, 12, 13, or 14 layers of conductive material, or elements separated and electrically insulated by a dielectric or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a ground layer, and a wiring layer, and the wiring layer and the ground layer are electrically connected by a via. In one embodiment, components such as the display 120, the touch screen, the input button, the transmitter, the processor, the memory, the battery 140, the charging circuit, the system on chip (SoC) structure, etc. can be mounted on or connected to the circuit board; or electrically connected to the wiring layer and / or the ground layer in the circuit board. For example, the radio frequency source is arranged on the wiring layer.

[0082] Any of the above ground plane, or ground plate, or ground metal layer is made of conductive material. In one embodiment, the conductive material can be any of the following: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate, and tin-plated copper, graphite powder impregnated cloth, graphite coated substrate, copper plated substrate, brass plated substrate, and aluminum plated substrate. Those skilled in the art will understand that the ground plane / ground plate / ground metal layer can also be made of other conductive materials.

[0083] Ground: refers to coupling with the above-mentioned ground / ground plate through a grounding structure and / or a grounding circuit. In one embodiment, the ground can be a physical ground, such as a physical ground at a specific position on the bezel through a part of the structure of the middle frame (or referred to as a physical ground). In one embodiment, the ground can be a device ground, such as a device ground through capacitors / inductors / resistors in series or parallel (or referred to as a device ground).

[0084] Resonant frequency: resonant frequency is also called resonance frequency. The resonant frequency can have a frequency range, i.e., a frequency range in which resonance occurs. The resonant frequency can be a frequency range in which the return loss characteristic is less than -6dB. The strongest point of resonance can be referred to as a 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 "first / second… resonance", wherein the first resonance is the fundamental mode resonance produced by the antenna / radiator, or in other words, the lowest frequency resonance produced by the antenna / radiator. It should be understood that the antenna / radiator can produce one or more antenna modes according to the specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0085] Resonant frequency band: the range of resonant frequencies is the resonant frequency band, and the return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0086] Communication frequency band / working frequency band: no matter what type of antenna, it always works in a certain frequency range (bandwidth). For example, an antenna supporting B40 frequency band has a working frequency band including frequencies in the range of 2300MHz-2400MHz, or in other words, the working frequency band of the antenna includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna. The width of the working frequency band is called the working bandwidth. The working bandwidth of an omnidirectional antenna can reach 3-5% of the center frequency. The working bandwidth of a directional antenna can reach 5-10% of the center frequency. The bandwidth can be considered as a range of frequencies on both sides of the center frequency (e.g., the resonant frequency of a dipole), in which the antenna characteristics are within the acceptable value range of the center frequency.

[0087] The resonant frequency band and the operating frequency band can be the same or can partially overlap. In one embodiment, one or more resonant frequency bands of an antenna can cover one or more operating frequency bands of the antenna.

[0088] End / point: "end / point" in the first end / second end / feed end / ground end / feed point / ground point / connection point of an antenna radiator, cannot be understood as a point or end physically disconnected from other radiators, but can also be considered as a point or section on a continuous radiator. In one embodiment, the "end / point" can include a connection / coupling area on the antenna radiator that is coupled to other conductive structures, for example, the feed end / feed point can be a coupling area (for example, an area facing a part of the feed structure) on the antenna radiator that is coupled to the feed structure, and for another example, the ground end / ground point can be a connection / coupling area on the antenna radiator that is coupled to the ground structure.

[0089] 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 conductive bodies, the closed end is electrically connected to other conductive bodies, and the open end is not electrically connected to other conductive bodies. In one embodiment, the open end can also be referred to as a suspended 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 conductive bodies can be coupled to the open end to transfer coupled energy (which can be understood as transferring current).

[0090] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution, and the closed end or the grounded end, etc. can be understood as a current large point on the radiator, or as a small point of electric field on the radiator; in one embodiment, coupling electronic devices (such as capacitors, inductors, etc.) through the closed end can not change the current distribution characteristics of the current large point / small point of electric field; in one embodiment, opening a slit (such as a gap filled with insulating material) at or near the closed end can not change the current distribution characteristics of the current large point / small point of electric field.

[0091] In some embodiments, the understanding of "open end" can also be from the perspective of current distribution, and the open end or the suspended end, etc. can be understood as a current small point on the radiator, or as a large point of electric field on the radiator; in one embodiment, coupling electronic devices (such as capacitors, inductors, etc.) through the open end can not change the current distribution characteristics of the current small point / large point of electric field.

[0092] It should be appreciated that the radiating element at the gap (from the structure of the radiating element, it is similar to the radiating element at the open end or suspended end) coupled with electronic devices (e.g., capacitors, inductors, etc.) can make the radiating element at the gap a large current point / small electric field point, in which case it should be appreciated that the radiating element at the gap is actually a closed end or a grounded end, etc.

[0093] The following exemplary half wavelength mode (HWM) and one wavelength mode (OWM) are described in detail, it should be appreciated that the following examples are only one of the antenna topologies corresponding to the half wavelength mode and one of the antenna topologies corresponding to the one wavelength mode, and these structures are not used to limit the antenna structures of the half wavelength mode or the one wavelength mode.

[0094] Figure 6a is a schematic diagram of the current distribution of the dipole antenna 101 in the half wavelength mode provided by the embodiment. Figure 20 is Figure 2a a schematic diagram of the current distribution of the dipole antenna 101 in the one wavelength mode shown in the figure.

[0095] As Figure 21 shown, the dipole antenna 101 with the first open end and the second open end has the half wavelength mode. The characteristics of this mode are that the directions of the currents on the dipole antenna 101 are the same, the current amplitudes are maximum in the middle, and the current amplitudes are minimum at the two ends.

[0096] As Figure 20 shown, the dipole antenna 101 with the first open end and the second open end has the one wavelength mode. The characteristics of this mode are that the directions of the currents on the dipole antenna 101 are opposite, the current amplitudes are minimum at the two ends and the center point of the dipole antenna 101, and the current amplitudes are maximum at the midpoint between the two ends and the center point of the dipole antenna 101.

[0097] Figure 22 is Figure 20 a schematic diagram of the current distribution of the dipole antenna 101 after bending and adding the floor 102 in the half wavelength mode. Figure 20 to Figure 22 is Figure 5a a schematic diagram of the current distribution of the dipole antenna 101 after bending and adding the floor 102 in the one wavelength mode.

[0098] As Figure 23 and Figure 24As shown, the two ends of the dipole antenna 101 can be bent inwards, and the first open end and the second open end are spaced apart. The dipole antenna 101 can be electrically connected to the ground plane 102. The ground plane 102 can be a PCB, mid-frame, or other metal layer of an electronic device. In this case, the dipole antenna can consist of two radiators 103 and a portion of the ground plane 102, while both half-wavelength and double-wavelength modes remain. The current generated by the dipole antenna in half-wavelength mode is as follows... ​ As shown, the current is distributed in the same direction around the central slot 104. The current generated by the dipole antenna in one-wavelength mode is as follows... ​ As shown, the current is distributed in opposite directions around the central gap 104. That is, the floor 102, between the ends of the two bent radiators 103 (i.e., the connection points with the floor 102), serves to carry the mode current between the two radiators 103. It should be understood that this application does not limit the width of the gap 104 between the first and second open ends. Since the floor 102 serves to carry the mode current between the two radiators 103, even if the width of the gap 104 between the first and second open ends is very wide—for example, the width of the gap 104 is greater than the length of the radiator 103—it still does not affect the... ​ and ​ The current distribution shown is for the mode. It should be understood that as long as the current distribution approximately satisfies... ​ and ​ The current distribution shown can be considered as the antenna device corresponding to ​ The half-wavelength mode HWM and shown ​ The one-wavelength mode OWM is shown.

[0099] It is understood that the specific embodiments described herein are merely for explaining the relevant invention and not for limiting the invention. It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0100] ​ This is a schematic diagram of the structure of the electronic device 1000 provided in this application in some embodiments.

[0101] like ​As shown, the electronic device 1000 provided by 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 a wireless communication function, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, an electronic device 1000 in a 5G network, or an electronic device 1000 in a future evolved public land mobile network (PLMN), etc., or other forms of devices capable of receiving and radiating electromagnetic wave signals. ​ The electronic device 1000 of the illustrated embodiment is described by way of example with reference to a mobile phone.

[0102] ​ is ​ A partially exploded view of the electronic device 1000 in some embodiments is shown.

[0103] As ​ and ​ As shown, the electronic device 1000 can include a screen 200 and a housing 300. It can be understood that, ​ and ​ Only some components included in the electronic device 1000 are shown schematically, and the actual shape, actual size, and actual structure of these components are not limited by ​ and ​ In other embodiments, when the electronic device 1000 is a device in other forms, the electronic device 1000 can also not include the screen 200. Among them, the screen 200 can be installed on the housing 300. The ​ The screen 200 and the housing 300 form a structure substantially in the shape of a cuboid. The screen 200 can be used to display images, text, etc.

[0104] Exemplarily, the screen 200 can include a cover 201 and a display 202. The cover 201 is laminated to the display 202. The cover 201 can be arranged close to the display 202, and can be mainly used to protect the display 202 from dust. Exemplarily, the cover 201 can be a cover glass, and can be replaced by a cover 201 made of other materials, such as a cover made of ultra-thin glass material, a cover made of PET (Polyethylene terephthalate) material, and the like. Exemplarily, the display 202 can be a liquid crystal display (LCD), a light emitting diode (LED), an organic light-emitting diode (OLED), or the like, and the present application does not limit the display 202.

[0105] Exemplarily, the housing 300 can be used to support the screen 200 and related devices of the electronic device 1000. The housing 300 can include a middle frame 310 and a rear cover 320. The rear cover 320 and the screen 200 can be arranged on two sides of the middle frame 310. The rear cover 320 can be fixedly connected to the middle frame 310 by means of adhesion, welding, or the like. At this time, the screen 200, the middle frame 310, and the rear cover 320 can collectively enclose an internal space of the electronic device 1000. The internal space of the electronic device 1000 can be used to place internal devices of the electronic device 1000, such as a battery, a speaker, a microphone, or an earpiece, and the like. The rear cover 320 can be made of a metal material, or can be made of a non-conductive material, such as a glass rear cover, a plastic rear cover, or the like, or can be made of a rear cover 320 including both conductive and non-conductive materials.

[0106] Exemplarily, the middle frame 310 can include a frame 311 and a middle plate 312. The frame 311 can be arranged around the middle plate 312 and connected to the middle plate 312. The frame 311 can be formed of a conductive material, such as metal. At this time, the frame 311 is a metal frame. In some embodiments, the middle frame 310 can only include the frame 311. The rear cover 320 can be an integrally formed structure with the frame 311, that is, the rear cover 320 and the frame 311 are an integral whole.

[0107] Exemplarily, the electronic device 1000 can further include a circuit board (not shown in the figure). The circuit board can be a printed circuit board (PCB). The circuit board can be located between the middle frame 310 and the back cover 320. The circuit board can carry electronic components such as radio frequency chips and the like. The circuit board can be made of a flame-resistant material (FR-4) medium plate, a Rogers medium plate, a hybrid medium plate of Rogers and FR-4, or the like. It should be noted that FR-4 is a code of a flame-resistant material grade, and the Rogers medium plate is a high-frequency plate. In some embodiments, the circuit board can also be located between the screen 200 and the middle frame 310. The specific position of the circuit board is not limited in the present application.

[0108] In some embodiments, a metal layer can also be provided on the circuit board. The metal layer can be used for grounding the electronic components carried on the circuit board, and can also be used for grounding other components (such as support antennas, frame antennas, etc.) in the electronic device 1000. At this time, the metal layer can be referred to as a ground plate, or a grounding plate, or a grounding layer. Exemplarily, the edge of the circuit board can be regarded as the edge of the ground plate.

[0109] In some embodiments, the conductive part in the middle frame 310 and / or the back cover 320 can also serve as the reference ground of the electronic device 1000. The circuit board and other devices 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 can also have other ground plates, which are not described here.

[0110] In the present embodiment, the electronic device 1000 can further include an antenna device. The electronic device 1000 can communicate with a network or other devices by using one or more of the following communication technologies through the antenna device. 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.

[0111] ​This is a structural diagram of the antenna device 500 and the ground plane 600 in the electronic device. ​ yes ​ The diagram shows the S11 curve of the antenna device 500.

[0112] like ​ As shown, the antenna device 500 of the electronic device may include a first radiator 501, a second radiator 502, a feed 503, and a switch 504. The feed 503 may be electrically connected to one of the radiators, such as the first radiator 501. In this case, the second radiator 502 can generate a related resonance by coupling the energy of the first radiator 501. Both the first radiator 501 and the second radiator 502 may be electrically connected to a ground plane 600. Specifically, the first radiator 501 may be directly electrically connected to the ground plane 600. The second radiator 502 may be electrically connected to the ground plane 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, thereby switching the connection and disconnection between the second radiator 502 and the ground plane 600, and thus adjusting the frequency of the antenna device 500.

[0113] like ​ and ​ As shown, when switch 504 is in the second state (e.g., switch on as shown in the figure), both radiators (i.e., the first radiator 501 and the second radiator 502) are electrically connected to the ground 600. At this time, the antenna device 500 can operate in both half-wavelength mode (HWM) and double-wavelength mode (OWM) within the target frequency range (e.g., ...). ​ In the range of 2.5 GHz to 6 GHz shown, two resonances corresponding to HWM and OWM are generated simultaneously. In half-wavelength mode, the current flows in the same direction on both radiators (i.e., the first radiator 501 and the second radiator 502 in this embodiment). In one-wavelength mode, the current flows in opposite directions on the two radiators. The ground plane 600 carries a portion of the mode current of the antenna device 500; that is, the ground plane 600 acts as a carrier of the mode current between the ends of the two radiators (the connection point with the ground plane 600). The antenna device 500 can operate in the frequency bands corresponding to the two resonances. When the switch 504 is in the first state (e.g., switch off as shown in the figure), only the first radiator 501 is electrically connected to the ground plane. At this time, the antenna device 500 generates a resonance in the target frequency range. The antenna device 500 can operate in the frequency band corresponding to this resonance. It can be understood that the antenna device 500 in the electronic device can achieve broadband coverage within the target frequency range (e.g., the range of 2.5 GHz to 6 GHz) by switching the state of the switch.

[0114] The antenna device can include a plurality of grounded radiators. Meanwhile, a switching component is arranged between two adjacent radiators to switch the electrical connection state between the two adjacent radiators, so as to adjust the frequency of the antenna device. In the case that the switching component is in the second state or the first state, the plurality of radiators can be grounded, so that the antenna device can generate two resonances based on the half-wavelength mode and the one-wavelength mode in the case that the switching component is in the second state or the first state. In an embodiment, the operating frequency band of the antenna device in the case that the switching component is in the first state and the operating frequency band of the antenna device in the case that the switching component is in the second state are continuous, so that a wider operating bandwidth can be obtained.

[0115] The antenna device of the present application will be described in detail below with reference to the relevant drawings.

[0116] ​ is ​ The structure schematic diagram of the antenna device 100 and the floor 400 of the electronic device 1000 in an embodiment is shown. ​ is ​ The structure schematic diagram of the structure in another view is shown. ​ is ​ The structure schematic diagram of the structure in still another view is shown.

[0117] As ​ shown, the antenna device 100 can include a first radiator 10, a second radiator 20, a connecting branch 30, a switching component 40 and a feed 50. The first radiator 10 and the second radiator 20 can both be metal conductors. The first radiator 10 and the second radiator 20 can be arranged at intervals. The connecting branch 30 can be connected between the first radiator 10 and the second radiator 20. In the embodiment, the floor 400 can be a circuit board in the electronic device 1000. The antenna device 100 and the floor 400 can both be located between the back cover 320 and the middle frame 310 of the electronic device 1000 (please refer to ​ ).

[0118] Exemplarily, the first radiator 10 can include a first end portion 11 and a second end portion 12. The first end portion 11 of the first radiator 10 can be a portion of the first radiator 10 on which the first grounding point 10a is arranged, or a portion of the first radiator 10 on which the floor 400 is electrically connected. The first radiator 10 can be electrically connected to the floor 400 at the first grounding point 10a, for example, the first radiator 10 can be electrically connected to the floor 400 at the first grounding point 10a through a metal grounding member. At this time, the first grounding point 10a can be regarded as the center of the partial surface in contact with each other between the first radiator 10 and the metal grounding member. The second end portion 12 of the first radiator 10 is not grounded. The first end portion 11 of the first radiator 10 can be a grounded end, and the second end portion 12 of the first radiator 10 can be an open end. The current of the first radiator 10 can flow into the floor 400 through the first grounding point 10a. The second end portion 12 of the first radiator 10 can be suspended relative to the floor 400.

[0119] Exemplarily, the second radiator 20 can include a first end portion 21 and a second end portion 22. The first end portion 21 of the second radiator 20 can be a portion of the second radiator 20 on which the second grounding point 20a is arranged, or a portion of the second radiator 20 on which the floor 400 is electrically connected. The second radiator 20 can be electrically connected to the floor 400 at the second grounding point 20a, for example, the second radiator 20 can be electrically connected to the floor 400 at the second grounding point 20a through a metal grounding member. At this time, the second grounding point 20a can be regarded as the center of the partial surface in contact with each other between the second radiator 20 and the metal grounding member. The second end portion 22 of the second radiator 20 is not grounded. The first end portion 21 of the second radiator 20 can be a grounded end, and the second end portion 22 of the second radiator 20 can be an open end. The current of the second radiator 20 can flow into the floor 400 through the second grounding point 20a. The second end portion 22 of the second radiator 20 can be suspended relative to the floor 400. It should be noted that, in an embodiment, the first end portion 11 of the first radiator 10 can be a section or a portion of the first end portion 11 of the first radiator 10 away from the end point / end surface, that is, the distance between all points on the first end portion 11 of the first radiator 10 and the end point / end surface can be less than a first threshold value, and the first end portion 11 of the first radiator 10 cannot be understood as a point in a narrow sense. For example, the first threshold value can be 10% of the physical length of the first radiator 10. The end portions of other components referred to in the present application can also be understood accordingly. In an embodiment, the first end portion 11 can also not have any end surface.

[0120] Exemplarily, the distance between the first grounding point 10a of the first radiator 10 and the open 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 can be less than the second distance. The distance between the second grounding point 20a of the second radiator 20 and the open end of the first radiator 10 (i.e. the second end 12 of the first radiator 10) is a third distance. The first distance can be less than the second distance, and the third distance can be less than the second distance. In this way, the first grounding point 10a of the first radiator 10 and the second grounding point 20a of the second radiator 20 can be away from each other. In an embodiment, the distance between the first grounding point 10a of the first radiator 10 and the open end of the second radiator 20 can be understood as the shortest straight-line distance between the first grounding point 10a of the first radiator 10 and the open end of the second radiator 20, and other distances in the present application can be adapted to the above definition. In an embodiment, the first distance and the third distance can both be less than the second distance. The first grounding point 10a of the first radiator 10 can be arranged closer to the second end 22 of the second radiator 20 (i.e. the open end of the second radiator 20) relative to the second grounding point 20a of the second radiator 20, and the two can form electromagnetic coupling. The second grounding point 20a of the second radiator 20 can be arranged closer to the second end 12 of the first radiator 10 (i.e. the open end of the first radiator 10) relative to the first grounding point 10a of the first radiator 10, and the two can form electromagnetic coupling.

[0121] 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 can also be less than the fourth distance, and the third distance can also be less than the fourth distance. In this way, the electromagnetic coupling between the first grounding point 10a of the first radiator 10 and the second end 22 of the second radiator 20 is better, and the electromagnetic coupling between the second grounding point 20a of the second radiator 20 and the second end 12 of the first radiator 10 is better.

[0122] As ​As shown, the connecting branch 30 can be a metal conductor. The connecting branch 30 can be connected between the first radiator 10 and the second radiator 20. The connecting branch 30 can be suspended relative to the floor 400. The width of the connecting branch 30 can be less than the width of the first radiator 10 and less than the width of the second radiator 20. The connecting branch 30 can be substantially in the shape of a "Z" letter, i.e., the connecting branch 30 can have two bending portions. In other embodiments, the connecting branch 30 can also be substantially in the shape of a straight line, an "S" letter, or other shapes, which are not limited in the present application. In other embodiments, the connecting branch 30 can be fixed on the floor 400 together with the first radiator 10 and the second radiator 20 by a support (not shown). The support can be an insulator for supporting the first radiator 10 and the second radiator 20. For example, the support can be a plastic support. The first radiator 10 and the second radiator 20 can be disposed (e.g., printed) on the upper surface or the lower surface of the support. In this embodiment, the connecting branch 30 and the first radiator 10 and the second radiator 20 can be an integrally formed pattern or structure. In some other embodiments, the connecting branch 30 can also be a transmission line.

[0123] For example, the connecting branch 30 can include a first connecting end 31 and a second connecting end 32. The first connecting end 31 can be connected between the first grounding point 10a of the first radiator 10 and the second end portion 12. The second connecting end 32 can be connected between the second grounding point 20a of the second radiator 20 and the second end portion 22. The connecting point between the connecting branch 30 and the first radiator 10 is a first connecting point 10b. The connecting point between the connecting branch 30 and the second radiator 20 is a second connecting point 20b. The first connecting point 10b can be spaced apart from the first grounding point 10a. The second connecting point 20b can be spaced apart from the second grounding point 20a. In this case, the first connecting point 10b and the second connecting point 20b can be located between the first grounding point 10a and the second grounding point 20a. In one embodiment, the first connecting point 10b and the second connecting point 20b can be located between the first grounding point 10a and the second grounding point 20a, 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 connecting point 10b can be regarded as the center of the part of the surface in contact with each other between the first radiator 10 and the connecting branch 30. The second connecting point 20b can be regarded as the center of the part of the surface in contact with each other between the second radiator 20 and the connecting branch 30.

[0124] For example, the distance from the first connection point 10b to the first ground point 10a can be less than the distance from the first connection point 10b to the second end 12 of the first radiator 10. The distance from the second connection point 20b to the second ground point 20a can be less than the distance from the second connection point 20b to the second end 22 of the second radiator 20. In other words, the first connection point 10b can be located close to the first ground point 10a of the first radiator 10. The second connection point 20b can be located close to the second ground point 20a of the second radiator 20. In other embodiments, the distance from the first connection point 10b to the first ground point 10a can also be greater than or equal to the distance from the first connection point 10b to the second end 12 of the first radiator 10. Alternatively, the distance from the second connection point 20b to the second ground point 20a can also be greater than or equal to the distance from the second connection point 20b to 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.

[0125] like ​ and ​ As shown, the connecting branch 30 can be broken at its intermediate position to form a first segment 33 and a second segment 34 spaced apart. The switching component 40 can be located at the intermediate position of the connecting branch 30 and connected in series between the first segment 33 and the second segment 34. The intermediate position of the connecting branch 30 can be considered any position offset by one-sixth of its length before or after its midpoint. 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.

[0126] For example, the first connecting end 31 of the connecting branch 30 can be located at the end of the first segment 33 away from the switching component 40. The second connecting end 32 of the connecting branch 30 can be located at the end of the second segment 34 away from the switching component 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 component 40 can be located at the midpoint of the connecting branch 30. In this case, the distance from the switching component 40 to the first connecting end 31 can be equal to the distance from the switching component 40 to the second connecting 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 in the range of 0.95 to 1.05, it can be regarded as the physical length of the first segment 33 being equal to the physical length of the second segment 34. The subsequent definition of equal physical length can be adapted to the above description.

[0127] Exemplarily, the switching component 40 can comprise an antenna switch. The switching component 40 can control the state of electrical connection between the first section 33 and the second section 34 of the connection branch 30 by the antenna switch. In one embodiment, the switching component 40 can be used to switch the on state and the off state of the current on the connection branch 30.

[0128] In one embodiment, the on state and the off state can be two opposite states, wherein the current on the connection branch 30 in the on state means that, in comparison with the off state, more current on the first section 33 of the connection branch 30 can flow into the second section 34 through the switching component 40, and more current on the second section 34 of the connection branch 30 can flow into the first section 33 through the switching component 40. The current on the connection branch 30 in the off state means that, in comparison with the on state, less current on the first section 33 of the connection branch 30 can flow into the second section 34 through the switching component 40, and less current on the second section 34 of the connection branch 30 can flow into the first section 33 through the switching component 40. In other words, the current on the connection branch 30 is more intensive and / or stronger when the connection branch 30 is in the on state than when the connection branch 30 is in the off state, and the current on the connection branch 30 is more sparse and / or weaker when the connection branch 30 is in the off state than when the connection branch 30 is in the on state.

[0129] In one embodiment, the on state and the off state can be two opposite states, wherein the current on the connection branch 30 in the on state means that, in comparison with the off state, more current on the first section 33 of the connection branch 30 can flow into the second section 34 through the switching component 40, and more current on the second section 34 of the connection branch 30 can flow into the first section 33 through the switching component 40. The current on the connection branch 30 in the off state means that, in comparison with the on state, less current on the first section 33 of the connection branch 30 can flow into the second section 34 through the switching component 40, and less current on the second section 34 of the connection branch 30 can flow into the first section 33 through the switching component 40. In other words, the current on the connection branch 30 is more intensive and / or stronger when the connection branch 30 is in the on state than when the connection branch 30 is in the off state, and the current on the connection branch 30 is more sparse and / or weaker when the connection branch 30 is in the off state than when the connection branch 30 is in the on state.

[0130] For example, the switching component 40 may 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 connecting branch 30, the same-direction 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 through the switching component 40 to the first connection end 31. That is, the same-direction current cannot flow from the first segment 33 of the connecting branch 30 through the switching component 40 to the second segment 34, or from the second segment 34 through the switching component 40 to the first segment 33. At this time, the same-direction current flowing from the first radiator 10 through the connecting branch 30 to the second radiator 20, or from the second radiator 20 through the connecting branch 30 to the first radiator 10, can be substantially disconnected at the switching component 40. When the switching component 40 is in the second state, the first segment 33 of the connecting branch 30 can be electrically connected to the second segment 34 through the switching component 40. Current in the same direction can flow from the first connection terminal 31 of the connecting branch 30 through the switching component 40 to the second connection terminal 32, or from the second connection terminal 32 through the switching component 40 to the first connection terminal 31. That is, current in the same direction can flow from the first segment 33 of the connecting branch 30 through the switching component 40 to the second segment 34, or from the second segment 34 through the switching component 40 to the first segment 33. Current in the same direction can flow between the first connection terminal 31 and the second connection terminal 32 of the connecting branch 30. At this time, the current in the same direction flowing from the first radiator 10 through the connecting branch 30 to the second radiator 20, or from the second radiator 20 through the connecting branch 30 to the first radiator 10, can be essentially continuous at the switching component 40. It should be noted that, in this embodiment, current in the same direction on a conductor can refer to current without a reverse point on that conductor (e.g., the connecting branch 30).

[0131] Exemplarily, one of the first radiator 10 and the second radiator 20 may have a feed point. The feed source 50 may be electrically connected to the antenna device 100 at the feed point. In this embodiment, the feed point may be located at the first radiator 10. The feed source 50 may be electrically connected to the first radiator 10 at the feed point. In other embodiments, the location of the feed point may be flexibly set according to actual design and production requirements, and this application does not impose specific limitations on this.

[0132] like ​ As shown, the center plane of the floor 400 is defined as the reference plane. The reference plane of the floor 400 can also be understood as the plane on which the floor 400 is located. For example, the first radiator 10 can face the reference plane and be spaced apart from the floor 400. In this case, the first radiator 10 can be arranged with the floor 400 in the thickness direction of the floor 400.

[0133] Exemplarily, the first radiator 10 can be arranged parallel to the reference plane of the floor 400. At this time, the distance between the first radiator 10 and the floor 400 in the arrangement direction of the two, i.e., the height of the first radiator 10 relative to the reference plane (hereinafter referred to as height for short) can be less than or equal to 2 mm. In the present embodiment, the height of the first radiator 10 can be 0.5 mm. Exemplarily, 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, which will not be described herein again. In some embodiments, the ratio between the height of the first radiator 10 and the height of the second radiator 20 can be in the range of 0.8 to 1.2. In this way, the first radiator 10 and the second radiator 20 are relatively close, and the coupling effect of the two is better. In other embodiments, 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 structure of the first radiator 10 and the second radiator 20 is relatively symmetrical, and the coupling effect of the two is better. 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 in the range of 0.98 to 1.02, it can be considered that the first radiator 10 and the second radiator 20 are arranged at the same height relative to the reference plane. In some other embodiments, the first radiator 10 and the second radiator 20 can 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, i.e., the first radiator 10 and the second radiator 20 can be arranged in a staggered manner 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.

[0134] Exemplarily, 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. Wherein, 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. Wherein, the length extension direction of the first projection refers to the length extension direction of the rectangle enclosed by the outer contour of the first projection itself. For example, when the first radiator 10 is partially bent, the first projection of the first radiator 10 can also be partially bent. At this time, the rectangle enclosed by the outer contour of the first projection itself is schematically shown by a dashed line in the figure. ​ The length extension direction of the second projection can refer to the definition of the length extension direction of the first projection.

[0135] Exemplarily, the first projection and the second projection can have an overlapping portion in the width direction of the first projection. An included angle can be formed between the first projection and the second projection. An included angle between the length extension direction of the first projection and the length extension direction of the second projection can be less than or equal to 45°. In the embodiment, that is, an included angle α (not shown in the figure) between the axis T1 of the first projection and the axis T2 of the second projection can be less than or equal to 45°. In this way, the first radiator 10 and the second radiator 20 of the antenna device 100 can be better coupled, and the working performance of the antenna device 100 is better. At the same time, the arrangement between the first radiator 10 and the second radiator 20 can be more compact, which is beneficial to reducing the volume of the entire antenna device 100. When the antenna device 100 is applied to the electronic device 1000, the structure of the antenna device 100 is more compact, which is beneficial to releasing more internal space of the electronic device 1000. In the embodiment, the first projection of the first radiator 10 and the second projection of the second radiator 20 can be arranged side by side and parallel, that is, the included 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. In this way, the distance from the first grounding 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 grounding point 20a of the second radiator 20 to the second end 12 of the first radiator 10. The coupling effect between the first radiator 10 and the second radiator 20 is better, the current distribution on the antenna device 100 is more symmetrical, and the performance of the antenna device 100 is better.

[0136] Exemplarily, at least one of the first radiator 10 and the second radiator 20 has a projection on the reference surface of the floor 400 that at least partially overlaps the floor 400, that is, at least part of the first projection of the first radiator 10 and / or at least part of the second projection of the second radiator 20 is located on the floor 400. In the embodiment, the first radiator 10 and the second radiator 20 can be located on the same side of the floor 400. The first projection of the first radiator 10 can be entirely located on the floor 400. The second projection of the second radiator 20 can also be entirely located on the floor 400. In other embodiments, at least part of the first projection of the first radiator 10 can be located on the floor 400. The second projection of the second radiator 20 is located outside the floor 400. At this time, the second radiator 20 can be located on the circumferential side of the floor 400 and arranged facing the circumferential surface of the floor 400. The first radiator 10 and the second radiator 20 can be located on different sides of the floor 400. In this way, the relative position arrangement between the first radiator 10 and the second radiator 20 in the antenna device 100 can be more flexible, so as to adapt to different device layouts in different electronic devices 1000.

[0137] Exemplarily, the first radiator 10 and the second radiator 20 can each be in a strip shape. It should be understood that the strip shape 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 a completely straight strip shape, or the first radiator 10 and / or the second radiator 20 can also be partially in a bent shape, but the overall extension direction can still be substantially in a straight strip shape to avoid other components / structures (such as screw holes, etc.) in the electronic device 1000.

[0138] Exemplarily, 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 of the second radiator 20 (i.e. the mechanical length or the geometric length) can be 0.8, 0.83, 0.92, 1, 1.05, 1.14 or 1.2. In the present 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 length of the first radiator 10 can be close to the physical length of the second radiator 20, so that the first radiator 10 and the second radiator 20 can be better coupled, which is beneficial to improve the working performance of the antenna device 100. In other embodiments, the first radiator 10 and / or the second radiator 20 can also be in other shapes, and the shape of the first radiator 10 and / or the second radiator 20 is not specifically limited in the present application.

[0139] ​ is a schematic diagram of the current direction of the antenna device 100 in the half-wavelength mode when the switching assembly 40 is in the first state. ​ is a schematic diagram of the current direction of the antenna device 100 in the half-wavelength mode when the switching assembly 40 is in the first state. ​ is a schematic diagram of the current direction of the antenna device 100 in the half-wavelength mode when the switching assembly 40 is in the first state. ​ It should be noted that the current direction in the antenna device 100 and the floor 400 is not fixed, but periodically changes over time. In the present embodiment, ​ , ​ The current direction shown in the subsequent drawings is a schematic diagram of the current direction of the antenna device 100 and the floor 400 at a certain time.

[0140] As ​ and ​As shown, when the switching component 40 is in the first 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. Unidirectional currents can also be generated on the connecting stub 30. Specifically, the current direction on the first segment 33 of the connecting stub 30 is the same as the current direction on the second segment 34. The current can reach its maximum value at the middle position of the connecting stub 30 (which, in this embodiment, is also the position of the switching component 40). The current in the first radiator 10 can flow into the floor 400 through the first grounding point 10a. The current in the second radiator 20 can flow into the floor 400 through the second grounding point 20a. The current between the first radiator 10 and the second radiator 20 can primarily flow through the floor 400. At this time, the first radiator 10 and the second radiator 20 can generate a first resonant point.

[0141] 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. On the floor 400, current can flow from the second grounding point 20a of the second radiator 20 to the first grounding point 10a of the first radiator 10. That is, current can flow through the first radiator 10, the floor 400, and the second radiator 20.

[0142] ​ yes ​ A schematic diagram of the current direction of the antenna device 100 in a one-wavelength mode when the switching component 40 is in the first state. ​ yes ​ The diagram shows the current direction of the floor 400 in a one-wavelength mode when the switching component 40 is in the first state.

[0143] like ​ and ​ As shown, 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 one-wavelength mode. Reverse currents can be generated on the connecting stub 30. Specifically, the current direction on the first segment 33 of the connecting stub 30 is opposite to the current direction on the second segment 34. The current can reach its minimum value at the middle position of the connecting stub 30. The current between the first radiator 10 and the second radiator 20 can mainly flow through the connecting stub 30. That is, the current in the first radiator 10 can flow into the second radiator 20 through the connecting stub 30. At this time, the first radiator 10 and the second radiator 20 can generate a second resonant point.

[0144] For example, in the first radiator 10, current can flow from the first ground 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 ground point 20a of the second radiator 20 to the second end 22 of the second radiator 20. In the connecting stub 30, current can flow from the first connecting end 31 to the switching component 40, reverse at the switching component 40, and then flow from the switching component 40 to the second connecting end 32. That is, current can flow through the first radiator 10, the connecting stub 30, and the second radiator 20.

[0145] It should be noted that, in this embodiment, the generation of unidirectional currents on two conductors (e.g., the first radiator 10 and the second radiator 20) can mean that the currents on both conductors have no reversal points and flow in the same direction. The generation of reverse currents on one conductor can mean that the current has at least one reversal point on that conductor. The generation of reverse currents on two conductors can mean that the currents on both conductors have no reversal points and flow in opposite directions. In other embodiments, when there are three or more conductors, the generation of unidirectional or reverse currents on multiple conductors can be understood accordingly as the above concepts.

[0146] ​ yes ​ A schematic diagram of the current direction in half-wavelength mode of the antenna device 100 when the switching component 40 is in the second state. ​ yes ​ The diagram shows the current direction in half-wavelength mode of the floor 400 when the switching component 40 is in the second state.

[0147] like ​ and ​ As shown, when the switching component 40 is in the second 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. Unidirectional currents can also be generated on the connecting stub 30. Specifically, the current direction on the first segment 33 of the connecting stub 30 is the same as the current direction on the second segment 34. The current can reach its maximum value at the middle position of the connecting stub 30. The path of current flowing from the second radiator 20 through the connecting stub 30 to the first radiator 10 is shorter than the path of current flowing from the second ground point 20a of the second radiator 20 through the floor 400 to the first ground point 10a of the first radiator 10. At this time, the current between the first radiator 10 and the second radiator 20 can mainly flow through the connecting stub 30. That is, the current of the first radiator 10 can flow into the second radiator 20 from the connecting stub 30. The first radiator 10 and the second radiator 20 can generate a fourth resonant point. ​ and ​The current directions of the floor 400 are shown when the switching component 40 is in the first state and the second state, respectively. The current on the floor 400 between the first radiator 10 and the second radiator 20 is significantly weakened when the switching component 40 is in the second state.

[0148] Exemplarily, in the first radiator 10, the current can flow from the first ground point 10a of the first radiator 10 to the second end 12 of the first radiator 10. In the second radiator 20, the current can flow from the second end 22 of the second radiator 20 to the second ground point 20a of the second radiator 20. In the connecting branch 30, the current can flow from the second connecting end 32 to the first connecting end 31 via the switching component 40. That is, the current can flow through the first radiator 10, the connecting branch 30, and the second radiator 20.

[0149] ​ is a schematic diagram of the current directions of the antenna device 100 in the one-wavelength mode when the switching component 40 is in the second state. ​ is a schematic diagram of the current directions of the floor 400 in the one-wavelength mode when the switching component 40 is in the second state. ​ ​ As shown in FIGS. 10 and 11, 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 the one-wavelength mode. Reverse currents can be generated on the connecting branch 30. The current directions on the first section 33 and the second section 34 of the connecting branch 30 are opposite to each other. 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. That is, 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 third resonance point.

[0150] As shown in FIGS. 10 and 11, 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 the one-wavelength mode. Reverse currents can be generated on the connecting branch 30. The current directions on the first section 33 and the second section 34 of the connecting branch 30 are opposite to each other. 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. That is, 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 third resonance point. ​ ​ Exemplarily, in the first radiator 10, the current can flow from the first ground point 10a of the first radiator 10 to the second end 12 of the first radiator 10. In the second radiator 20, the current can flow from the second ground point 20a of the second radiator 20 to the second end 22 of the second radiator 20. In the connecting branch 30, the current can flow from the first connecting end 31 to the position of the switching component 40, reverse at the position of the switching component 40, and then flow from the position of the switching component 40 to the second connecting end 32. That is, the current can flow through the first radiator 10, the connecting branch 30, and the second radiator 20.

[0151]

[0152] is a schematic diagram of the current directions of the antenna device 100 in the one-wavelength mode when the switching component 40 is in the second state. ​ ​ ​​​The diagram shows the S11 curves of the antenna device 100 when the switching component 40 is in the first state and the second state, respectively.

[0153] Curve 1 represents the S11 curve of the antenna device 100 when the switching component 40 is in the first state. Curve 2 represents the S11 curve of the antenna device 100 when the switching component 40 is in the second state.

[0154] like ​ As shown, 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, having two resonance points (i.e., the first resonance point H1 and the second resonance point H2 in this embodiment). That is, when the switching component 40 is in the first state, the antenna device 100 can operate in two resonant frequency bands, and the distance between the two resonant frequency bands is relatively short. In one embodiment, the two resonant frequency bands can be continuous, achieving 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 resonant frequency bands can be considered continuous. Specifically, the antenna device 100 operates at a lower frequency in the half-wavelength mode and at a higher frequency in the double-wavelength mode. 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.

[0155] 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 double-wavelength mode, having two resonance points (i.e., the third resonance point H3 and the fourth resonance point H4 in this embodiment). That is, the antenna device 100 can operate in two resonant frequency bands when the switching component 40 is in the second state, and the distance between the two resonant frequency bands is relatively short. In one embodiment, the two resonant frequency bands can be continuous, achieving wideband coverage. Specifically, the resonant 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 double-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 double-wavelength mode can be 4.09 GHz.

[0156] At this time, the operating frequency of the antenna device 100 in the one-wavelength mode when the switching component 40 is in the first state is higher, the operating frequency of the antenna device 100 in the one-wavelength mode when the switching component 40 is in the second state is lower, and the operating frequency bands in the two states have partial frequency overlap. Among them, when the ratio between the frequency of the second resonance point H2 corresponding to the operating frequency of the antenna device 100 in the one-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 one-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 the two operating frequency bands have partial frequency overlap. 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 is switched from the first state to the second state, the frequency of the antenna device 100 in the one-wavelength mode is less affected, and the frequency in the half-wavelength mode is more affected.

[0157] In other words, the antenna device 100 in the embodiment can generate at least two resonances, that is, can operate in at least two resonance frequency bands, whether the switching component 40 is in the first state or the second state. The two resonance frequency bands can be continuous, so as to form wide frequency coverage respectively. At the same time, 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 have partial frequency overlap, 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. It should be noted that in the embodiment, in the same S11 curve, when the S11 value of the connection point of the two frequency bands is below -3db, it can be considered that the two frequency bands are continuous.

[0158] In other embodiments, as ​As shown, the distance from the first connecting point 10b to the first grounding point 10a can also be greater than the distance from the first connecting point 10b to the second end 12 of the first radiator 10. The distance from the second connecting point 20b to the second grounding point 20a can also be greater than the distance from the second connecting point 20b to the second end 22 of the second radiator 20. That is, the first connecting point 10b can be arranged close to the second end 22 of the second radiator 20. The second connecting point 20b can be arranged close to the second end 12 of the first radiator 10. When the switching assembly 40 is in the first state, the antenna device 100 can work in two frequency bands, and the distance between the two frequency bands is close, the two frequency bands are continuous, and wide frequency coverage can be achieved. When the switching assembly 40 is in the second state, the antenna device 100 can work in two frequency bands, and the distance between the two frequency bands is far, forming double frequency coverage. Among them, the working frequency of the antenna device 100 in the one-wavelength mode when the switching assembly 40 is in the first state is higher, the working frequency of the antenna device 100 in the one-wavelength mode when the switching assembly 40 is in the second state is lower, and there is a part of frequency overlap between the working frequency bands in the two states, so that the working frequency band of the antenna device 100 when the switching assembly 40 is in the first state and the working frequency band of the antenna device 100 when the switching assembly 40 is in the second state can be continuous, thereby a wider working bandwidth can be formed.

[0159] It can be understood that, compared with the two radiators in the antenna device 500 being independent of each other and not in contact with each other, and the switch 504 being arranged at the ground end of one of the two radiators to control the electrical connection state of the one of the two radiators with the floor 600. By changing the electrical connection state of the one of the two radiators with the floor 600, the frequency of the antenna device 500 is adjusted. By switching the switch 504, the antenna device 500 can generate three resonances. The antenna device 100 in the embodiment is provided with the connecting branch 30 between the first radiator 10 and the second radiator 20, and the switch assembly 40 is arranged to electrically connect the connecting branch 30. By controlling the switch assembly 40 to switch between the first state and the second state, the electrical current on the connecting branch 30 is switched between the open state and the closed state, and the electrical connection state between the first radiator 10 and the second radiator 20 is controlled, the current flow path of the antenna device 100 is changed, and thus the frequency of the antenna device 100 is adjusted. The first connecting point 10b and the second connecting point 20b can be located between the first ground point 10a and the second ground point 20a, that is, the first ground point 10a and the second ground point 20a can be arranged away from each other, and the two can be located on different sides of the connecting branch 30. In this way, when the switch assembly 40 is switched 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 one-wavelength mode are both increased. In other words, the first radiator 10 and the second radiator 20 in the embodiment can be electrically connected with the floor 400 regardless of whether the switch assembly 40 is in the first state or the second state, so that the antenna device 100 can work in two resonance frequency bands regardless of whether the switch assembly 40 is in the first state or the second state, that is, the entire antenna device 100 can generate four resonances, and the working performance is better.

[0160] Secondly, the switching component 40 in the embodiment is located at the middle position of the connecting branch 30. In this way, when the antenna device 100 is in the one-wavelength mode, the current reaches the minimum at the middle position of the connecting branch 30 (i.e. the position of the switching component 40 in the embodiment), at this time, the switching component 40 has less influence on the current distribution when switching between the first state and the second state, the frequency of the antenna device 100 in the one-wavelength mode changes less, and the working frequency bands in the two states partially overlap. When the antenna device 100 is in the half-wavelength mode, the current path from the second radiator 20 to the first radiator 10 through the connecting branch 30 is shorter than the current path from the second ground point 20a of the second radiator 20 to the first ground point 10a of the first radiator 10 through the ground plane 400. At this time, the switching component 40 has greater influence on the current path when switching between the first state and the second state, and the frequency of the antenna device 100 in the half-wavelength mode changes greatly. For example, when the switching component 40 is switched 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 is shortened, and the frequency of the antenna device 100 is increased.

[0161] In other words, the antenna device 100 in the embodiment can change the length of the current path between the first radiator 10 and the second radiator 20 when the state of the switching component 40 changes, so that the frequency of the antenna device 100 in the half-wavelength mode changes greatly. At the same time, the switching component 40 is located at the middle position of the connecting branch 30, so that the frequency of the antenna device 100 in the one-wavelength mode changes less. In this way, the working frequency band of the antenna device 100 when the switching component 40 is in the first state partially overlaps with the working frequency band of the antenna device 100 when the switching component 40 is in the second state, so that the working frequency band of the antenna device 100 when the switching component 40 is in the first state can be continuous with the working frequency band of the antenna device 100 when the switching component 40 is in the second state, thereby forming a wider working bandwidth. In this way, under the condition of the same volume, the antenna device 100 in the embodiment only needs to be provided with the connecting branch 30 between the first radiator 10 and the second radiator 20 and the switching component 40 at the middle position of the connecting branch 30, so as to form a wider working bandwidth and have higher working performance. Under the condition of the same working bandwidth, compared with the antenna device which needs to be provided with more tuning circuits, the overall structure of the antenna device 100 in the embodiment is simpler, which is conducive to the miniaturization of the antenna device 100, thereby releasing more space inside the electronic device 1000. At the same time, when the switching component 40 is located at the middle position of the connecting branch 30 but not at the midpoint of the connecting branch 30, i.e. the switching component 40 slightly deviates from the midpoint of the connecting branch 30, the switching component 40 can also play a role in frequency adjustment of the antenna device 100.

[0162] Furthermore, compared to some antenna devices where the two grounding points of two radiators are placed close together to form electrical coupling, and the two open-circuit points of two radiators are placed close together to form 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 are located on different sides of the connecting stub 30, and can be far apart. Thus, the first grounding point 10a of the first radiator 10 can be placed close to the second end 22 (i.e., the open-circuit end) of the second radiator 20, forming electromagnetic coupling between them, and the second grounding point 20a of the second radiator 20 can be placed close to the second end 12 (i.e., the open-circuit end) of the first radiator 10, also forming electromagnetic coupling between them. This effectively improves the radiation efficiency of the antenna device 100 and helps alleviate the problem of minimum radiation efficiency of the antenna device 100.

[0163] In some implementations, such as ​ As shown, 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 stub 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 segment 33 and the second segment 34 of the connecting stub 30. The switching component 40 may be electrically connected to the end face of the first segment 33 near the second segment 34, or it may be electrically connected at a certain distance from the end face of the first segment 33 near the second segment 34, for example, at a distance of 1 mm or 2 mm. The configuration of the switching component 40 electrically connecting to the second segment 34 is largely the same as the configuration of the switching component 40 electrically connecting to the first segment 33, and will not be described again here.

[0164] In some other embodiments, the switching component 40 may further include multiple tuning elements. The antenna switch may have multiple gating circuits. In this embodiment, the number of gating circuits of the antenna switch may be equal to the number of tuning elements, for example, four in each case. 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, multiple capacitors and multiple inductors may be connected in series in multiple gating circuits in a one-to-one correspondence, forming multiple switching lines. The multiple switching lines may be connected in parallel. It is understood that by connecting the tuning elements in series between the connecting stub 30 and the antenna switch, the frequency of the antenna device 100 can be better adjusted while controlling the electrical connection state between the first segment 33 and the second segment 34 of the connecting stub 30, thereby improving the operating performance of the antenna device 100. Furthermore, by setting multiple tuning elements to be connected in series in a one-to-one correspondence with multiple gating circuits in the antenna switch to form multiple switching lines, the entire antenna device 10 can operate in more different frequency bands, which is beneficial to improving the performance of the antenna device 100. For ease of understanding, ​ The switching component 40 is outlined with a dashed line. This application does not limit the specific form of the switching component 40.

[0165] ​ yes ​ The diagram shows the structure of the antenna device 100 and the floor 400 in another embodiment.

[0166] like ​ As shown, the structure of the antenna device 100 in this embodiment is similar to... ​ The antenna device 100 shown has a generally similar structure, and the identical parts will not be described again. The difference lies in that the first radiator 10 and / or the second radiator 20 in this embodiment can be generally flat. The width of the first radiator 10 and / or the second radiator 20 can be relatively wide. For example, both the first radiator 10 and the second radiator 20 are 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, and the operating performance of the antenna device 100 can be improved.

[0167] ​ yes ​ The diagram shows the structure of the antenna device 100 and the floor 400 in another embodiment.

[0168] like ​ As shown, the structure of the antenna device 100 in this embodiment is similar to... ​The antenna device 100 shown has a largely similar structure, and the identical parts will not be described again. The difference lies in that the antenna device 100 in this embodiment may further include a third radiator 60. The number of connecting stubs 30 can be two. The number of switching components 40 can be two. The two switching components 40 can be located one-to-one in the middle of the two connecting stubs 30. For example, the third radiator 60 can be located on the side of the second radiator 20 away from the first radiator 10. One connecting stub 30 can be connected between the first radiator 10 and the second radiator 20. The other connecting stub 30 can 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 can be: both switching components 40 are in the first state; both switching components 40 are in the second state; the switching component 40 located between the first radiator 10 and the second radiator 20 is in the first state, and the switching component 40 located between the second radiator 20 and the third radiator 60 is in the second state; the switching component 40 located between the first radiator 10 and the second radiator 20 is in the second state, and the switching component 40 located between the second radiator 20 and the third radiator 60 is in the first state. In other embodiments, the antenna device 100 may also include a fourth radiator, a fifth radiator, etc. The antenna device 100 may also include more connecting stubs 30 and switching components 40. The number of connecting stubs 30 may be one less than the number of radiators. The number of connecting stubs 30 may be the same as the number of switching components 40.

[0169] It is understood that the antenna device 100 in this embodiment, by setting more radiators and setting connecting branches 30 in two adjacent radiators, and setting a switching component 40 at the middle position of each connecting branch 30, enables the antenna device 100 to switch more states through the cooperation of multiple switching components 40, thereby forming a wider working bandwidth and improving the working performance of the antenna device 100.

[0170] ​ yes ​ The antenna device 100 shown is a schematic diagram of its structure in other embodiments.

[0171] like ​ As shown, the structure of the antenna device 100 in this embodiment is similar to... ​ The antenna device 100 shown has a largely the same structure, and the identical parts will not be described again. The difference lies in that the connecting stub 30 can also be straight, meaning there are no bends in the connecting stub 30. Thus, compared to... ​The length of the connection branch 30 of the antenna device 100 shown in the embodiment is shorter. When the switching assembly 40 is in the second state, 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, so that the operating frequency of the antenna device 100 in this state can be improved, and the operating performance of the antenna device 100 is improved.

[0172] ​ is ​ The structural schematic diagram of the antenna device 100 in other embodiments is shown. ​ is ​ The structural schematic diagram of the antenna device 100 in other embodiments is shown.

[0173] As ​ shown, the structure of the antenna device 100 in the embodiment is substantially the same as that of the antenna device 100 shown in ​ The difference is that the first projection of the first radiator 10 and the second projection of the second radiator 20 can also only partially overlap in the width direction of the first projection. At this time, the first projection and the second projection can be partially staggered, that is, the first radiator 10 and the second radiator 20 can be partially staggered in the length direction of the first radiator 10.

[0174] In other embodiments, as ​ shown, the first projection of the first radiator 10 and the second projection of the second radiator 20 can also have no overlapping part in the width direction of the first projection. At this time, the first projection and the second projection can be completely staggered, that is, the first radiator 10 and the second radiator 20 can be completely staggered in the length direction of the first radiator 10. It can be understood that by arranging the first radiator 10 and the second radiator 20 to be staggered in the length direction of the first radiator 10 in the embodiment, the arrangement between 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.

[0175] ​ is ​ The structural schematic diagram of the antenna device 100 in other embodiments is shown.

[0176] As ​ shown, the structure of the antenna device 100 in the embodiment is substantially the same as that of the antenna device 100 shown in ​The antenna device 100 shown has a largely similar structure, and the identical parts will not be described again. The difference lies in the angle formed between the first projection of the first radiator 10 and the second projection of the second radiator 20. Specifically, the angle α between the first axis T1 of the first projection and the axis T2 of the second projection can be 30°. By setting 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 some 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.

[0177] ​ yes ​ The diagram shows a partial structure of the electronic device 1000 in some embodiments. ​ yes ​ The diagram shown is a structural schematic from another perspective. ​ yes ​ The diagram shows a cross-sectional view of the structure along line AA in some embodiments.

[0178] like ​ As shown, the antenna device 100 in this embodiment and ​ The antenna device 100 shown has a largely similar structure, and the similar parts will not be described again. The differences between the two will be 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.

[0179] Exemplarily, the first radiator 10 can be a bezel antenna. The width direction of the first radiator 10 can be perpendicular to the floor 400, i.e. the width direction of the first radiator 10 can be the height direction of the bezel 311. The bezel 311 can be provided with a first slot 311a. The bezel 311 can be grounded at a first position 311b. At this time, the part of the bezel 311 between the first position 311b and the first slot 311a can constitute the first radiator 10, i.e. the first radiator 10 can be a bezel antenna. The end of the first radiator 10 close to the first slot 311a is the open end of the first radiator 10 (i.e. the second end portion 12 of the first radiator 10). The end of the first radiator 10 close to the first position 311b is the first end portion 11 of the first radiator 10. The first grounding point 10a of the first radiator 10 can be located at the first position 311b, i.e. at the first end portion 11. The first end portion 11 can have no end face. The first radiator 10 can be electrically connected to the floor 400 at the first grounding point 10a.

[0180] Exemplarily, the second radiator 20 can be located on the side of the first radiator 10 close to the floor 400. The second radiator 20 can be arranged on the floor 400. The second radiator 20 and the floor 400 can overlap in the thickness direction of the floor 400. The first radiator 10 and the second radiator 20 can be arranged side by side. In the present embodiment, the feeding point can be provided on the second radiator 20. The feed source 50 can be located on the inner side of the bezel 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 by some fixing members and electrically connected to the connecting branch 30. In other embodiments, the feeding point can also be located on the first radiator 10. In some other embodiments, the metal part in the back cover 320 can also be used as the floor 400. At this time, the second radiator 20 can also be arranged on the back cover 320.

[0181] Exemplarily, the bezel 311 can also be provided with a second slot 311b. The second slot 311b can communicate with the first slot 311a. The second slot 311b can separate the first radiator 10 and the floor 400 in the thickness direction of the floor 400. Among them, the first slot 311a and the second slot 311b can be filled with non-metallic medium 70 (such as plastic, etc.). At this time, 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.

[0182] It can be understood that, compared with the multiple radiators arranged on the frame 311, the first radiator 10 of the antenna device 100 in the embodiment is arranged on the frame 311, and the second radiator 20 is arranged 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, so that more space of the frame 311 can be released to meet different setting requirements of the electronic device 1000, such as more antennas can be arranged on the frame 311 of the electronic device 1000, the communication performance of the electronic device 1000 is improved, and the user experience is improved.

[0183] Secondly, in the embodiment, the first slit 311a and the second slit 311b are arranged on 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, so that the first radiator 10 can have a good radiation environment. At the same time, the second slit 311b can separate the first radiator 10 from the floor 400 in the thickness direction of the floor 400, so that the projection of the first radiator 10 on the plane where the floor 400 is located has a distance of zero from the floor 400, effectively reducing the distance between the frame 311 of the electronic device 1000 and the display screen 202, thereby effectively improving the screen 200 ratio of the electronic device 1000 and improving the user experience.

[0184] In other embodiments, as shown in ​ The frame 311 can also not be provided with the second slit 311b. The floor 400 can also be provided with a third slit 401. The third slit 401 can separate the first radiator 10 from the floor 400 in the width direction of the second radiator 20. At this time, the first slit 311a and the third slit 401 can be filled with a non-metallic medium 70.

[0185] In yet other embodiments, as shown in ​ The second slit 311b can be provided on the frame 311, and the third slit 401 can also be provided on the floor 400. The second slit 311b can communicate with the third slit 401. At this time, the first slit 311a, the second slit 311b, and the third slit 401 can be filled with a non-metallic medium 70.

[0186] It should be noted that, in the case of no conflict, the features in the embodiments of the present application can be combined with each other, and any combination of the features in different embodiments is also within the protection scope of the present application, that is, the above-described multiple embodiments can also be combined as needed.

[0187] It should be noted that all the above-mentioned drawings are exemplary illustrations of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not limited to the actual product of the present application.

[0188] The above merely show some embodiments of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all of them should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device (1000), characterized in that, The system includes a first radiator (10), a second radiator (20), a connecting branch (30), a switching assembly (40), and a feed source (50). The first radiator (10) and the second radiator (20) are spaced apart. The first radiator (10) has a first grounding point (10a) and a first connection point (10b) spaced apart. The second radiator (20) has a second grounding point (20a) and a second connection point (20b) spaced apart. The first connection point (10b) and the second connection 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 connection point (10b), and the other end of the connecting branch (30) is electrically connected to the second connection point (20b). The switching assembly (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 resonant point (H1) and a second resonant 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 resonant point (H3) and a fourth resonant point (H4). The frequencies of the first resonant point (H1) and the second resonant point (H2) are both less than the frequency of the third resonant point (H3). The frequencies of the first resonant point (H1) and the second resonant point (H2) are also less than the frequency of the fourth resonant point (H4).

2. The electronic device (1000) according to claim 1, characterized in that, The frequency of the second resonant point (H2) is higher than the frequency of the first resonant point (H1); The frequency of the fourth resonant point (H4) is higher than the frequency of the third resonant point (H3), and the ratio between the frequency of the second resonant point (H2) and the frequency of the third resonant 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) through the first grounding point (10a), and the current of the second radiator (20) flows into the floor (400) of the electronic device (1000) through 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) through 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 resonant 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 resonant point (H2) generated by the first radiator (10) and the second radiator (20), the current on the first radiator (10) is opposite to the current on the second radiator (20).

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 resonant point (H3) generated by the first radiator (10) and the second radiator (20), the current on the first radiator (10) is opposite to the current on the second radiator (20); When the switching component (40) is in the second state, at the frequency of the fourth resonant 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 in the same direction.

6. The electronic device (1000) according to any one of claims 1 to 5, characterized in that, The first radiator (10) includes 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) includes 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) also satisfies at least one of the following limitations: The distance from the first connection point (10b) to the first grounding point (10a) is less than the distance from the first connection point (10b) to the second end (12) of the first radiator (10); The distance from the second connection point (20b) to the second grounding point (20a) is less than the distance from the second connection point (20b) to the second end (22) of the second radiator (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 the first distance, the distance between the first grounding point (10a) and the second grounding point (20a) is the second distance, and the distance between the second grounding point (20a) and the second end (12) of the first radiator (10) is the third distance; The electronic device (1000) also satisfies at least one of the following limitations: The first distance is less than the second distance; The third distance is less 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 the fourth distance; The electronic device (1000) also satisfies at least one of the following limitations: The first distance is less than the fourth distance; The third distance is less 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) includes a first segment (33) and a second segment (34) spaced apart. The first segment (33) connects to the first connection point (10b), and the second segment (34) connects to the second connection point (20b). The switching component (40) is connected in series between the first segment (33) and the second segment (34). The ratio of the physical length of the first segment (33) to the physical length of the second segment (34) is 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) in the thickness direction of the floor (400) of the electronic device (1000) is a first projection, and the projection of the second radiator (20) in the thickness direction of the floor (400) is a second projection. At least one of the first projection and the second projection overlaps with the projection of the floor (400) in the thickness direction of the floor (400).

11. The electronic device (1000) according to claim 10, characterized in that, The angle between the length extension direction of the first projection and the 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) includes an antenna switch, which is used to switch 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 assembly (40) further includes a tuning element, which 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 mounted on a bracket.

18. The electronic device (1000) according to any one of claims 1 to 16, characterized in that, The electronic device (1000) further includes a frame (311), the frame (311) having a first gap (311a), the frame (311) being grounded at a first position (311b), the first radiator (10) including a conductive portion of the frame (311) located between the first position (311b) and the first gap (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 on the frame (311) where the first gap (311a) is formed; The second radiator (20) overlaps with the floor of the electronic device (1000) in the thickness direction of the floor.

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