Electronic equipment

Abstract

The invention provides electronic equipment. The electronic equipment comprises an antenna. According to the antenna, a conductive part of a frame of the electronic equipment is used as a first radiator, and a second radiator is arranged on one side of the first radiator at an interval. A novel antenna structure is formed through the first radiating body and the second radiating body which are arranged adjacently, the first radiating body and the second radiating body are used for generating a composite antenna mode, a low directivity coefficient is achieved, and therefore the electronic equipment has good communication performance in all directions.

Description

Technical Field

[0001] The present application relates to the field of wireless communications, and in particular to an electronic device. Background Art

[0002] As people's demand for high-speed data transmission increases, the development trend of industrial design (ID) of electronic devices is large screen ratio and multiple cameras, which makes the layout space of antennas more and more limited.

[0003] At present, in some usage scenarios of electronic devices (for example, when electronic devices communicate via WiFi), in traditional designs, the antenna directivity coefficient is high, the antenna coverage is uneven, and the communication experience in areas with weak coverage is poor. Therefore, how to design an antenna with a low directivity coefficient is an urgent problem to be solved. Summary of the invention

[0004] The present application provides an electronic device, comprising an antenna. The antenna uses a conductive part of a frame of the electronic device as a first radiator, and a second radiator is spaced apart on one side of the first radiator.

[0005] In a first aspect, an electronic device is provided, comprising a floor; a frame, at least a portion of the frame is spaced apart from the floor, the frame comprises a first position and a second position, and the frame is coupled to the floor at the first position and the second position; an antenna, the antenna comprising: a first radiator, the first radiator comprising a conductive portion of the frame between the first position and the second position; a second radiator, the second radiator is spaced apart from the first radiator and the floor, and a projection of the second radiator on the frame along a first direction at least partially overlaps with the first radiator, the first direction being a direction perpendicular to an extension direction of the first radiator; wherein the first radiator and the second radiator are used to generate a first resonance, a distance D1 between the first radiator and the second radiator is less than or equal to 10 mm or a quarter of a first wavelength, the first wavelength being a wavelength corresponding to the first resonance; a ratio between a dimension L2 of the second radiator along a second direction X and a dimension L3 of the second radiator along the first direction Y is greater than 1, and the second direction is an extension direction of the first radiator; a first end of the second radiator is an open end, a second end is a ground end, and a distance between the first end of the second radiator and the first radiator is less than a distance between the second end of the second radiator and the first radiator.

[0006] According to an embodiment of the present application, a new antenna structure is formed by adjacently arranging a first radiator and a second radiator (for example, a distance D1 is less than or equal to 10 mm or one quarter of the first wavelength), and the first radiator and the second radiator are used to generate a composite antenna pattern (generated by the first radiator and the second radiator together, not by a single radiator) having a lower directivity coefficient, thereby enabling the electronic device to have good communication performance in all directions.

[0007] It should be understood that the larger the directivity coefficient, the greater the proportion of energy radiated by the antenna in a certain direction, and the more concentrated the energy radiation. When the directivity coefficient of the antenna is high, the proportion of energy radiated by the antenna in the direction of maximum radiation is high, and therefore, the proportion of energy radiated by the antenna in other directions is low. When a user uses an electronic device that includes the antenna, the electronic device can only have good communication performance in the area near the maximum radiation direction of the antenna. When a user moves with the electronic device, and the device that transmits signals to the antenna (for example, a router) is not in the area near the maximum radiation direction of the antenna, the communication performance of the electronic device will deteriorate, affecting the user experience.

[0008] In combination with the first aspect, in some implementations of the first aspect, at a resonance point of the first resonance, an electric field between the first radiator and the second radiator is opposite to an electric field between the first radiator and the floor.

[0009] In combination with the first aspect, in some implementations of the first aspect, at a resonance point of the first resonance, a magnetic field between the first radiator and the second radiator and a magnetic field between the first radiator and the floor are parallel to the floor. In combination with the first aspect, in some implementations of the first aspect, at a resonance point of the first resonance, a zero point of a directional pattern generated by the antenna is not located in a circumferential direction of the electronic device.

[0010] According to an embodiment of the present application, at the resonance point of the first resonance, the electric field between the first radiator and the second radiator is opposite to the electric field between the first radiator and the floor. The electric field between the first radiator and the second radiator is directed from the first radiator to the second radiator, for example, the electric field is along the negative direction of the y-axis. The electric field between the first radiator and the floor is directed from the floor to the first radiator, for example, the electric field is along the positive direction of the y-axis.

[0011] Since the electric field between the first radiator and the second radiator and the electric field between the first radiator and the floor can both generate a magnetic field parallel to the floor (for example, parallel to the xoy plane), for example, the directions of the magnetic fields are the same, along the positive direction of the z-axis, thereby improving the radiation characteristics of the antenna in a direction parallel to the floor (for example, parallel to the xoy plane).

[0012] In one embodiment, since a magnetic field parallel to the floor (e.g., parallel to the xoy plane) can be generated, the zero point of the directional pattern is not located in the circumference of the electronic device, thereby improving the radiation characteristics of the antenna in the direction parallel to the floor (e.g., parallel to the xoy plane). The zero point of the directional pattern can be understood as the minimum point of the amplitude of the directional pattern.

[0013] In combination with the first aspect, in some implementations of the first aspect, the length L1 of the first radiator and the dimension L2 of the second radiator along the second direction satisfy: L1×50%≤L2≤L1×200%.

[0014] According to the embodiment of the present application, when the length L1 of the first radiator and the dimension L2 of the second radiator along the second direction are within the above range, it is beneficial to generate a composite mode of the first radiator and the second radiator, and the radiation characteristics of the antenna at the first resonance can be improved.

[0015] In combination with the first aspect, in some implementations of the first aspect, a ratio between a dimension L2 of the second radiator along the second direction X and a dimension L3 of the second radiator along the first direction Y is less than or equal to 3.

[0016] According to the embodiment of the present application, the dimension L2 of the second radiator along the second direction (for example, the x direction) is increased, which can improve the radiation efficiency and system efficiency of the antenna.

[0017] At the same time, the first radiator may have a structure similar to a slot antenna, and the second radiator may have a structure similar to a PIFA, which is beneficial to the generation of a composite mode of the first radiator and the second radiator.

[0018] In combination with the first aspect, in some implementations of the first aspect, the resonance point frequency of the first resonance is greater than or equal to 0.7 GHz and less than or equal to 6 GHz.

[0019] According to an embodiment of the present application, the working frequency band of the antenna may include the 5G frequency band of WiFi.

[0020] In combination with the first aspect, in some implementations of the first aspect, a size of the second radiator along the first direction is greater than or equal to 2 mm and less than or equal to 25 mm.

[0021] In combination with the first aspect, in some implementations of the first aspect, a size of the second radiator along the first direction is greater than or equal to one twenty-fifth of the first wavelength and less than or equal to one half of the first wavelength.

[0022] According to the embodiment of the present application, the size of the second radiator along the first direction can be used to adjust the coupling between the first radiator and the second radiator, thereby adjusting the resonance point frequency of the first resonance generated by the composite mode.

[0023] In combination with the first aspect, in some implementations of the first aspect, the antenna further includes an electronic component, and the electronic component is coupled between the first radiator and the second radiator.

[0024] According to the embodiment of the present application, the electronic component can be used to adjust the coupling between the first radiator and the second radiator, thereby adjusting the resonance point frequency of the first resonance generated by the composite mode.

[0025] In combination with the first aspect, in some implementations of the first aspect, a ratio of a length of an overlapping portion of a projection of the second radiator on the frame along the first direction and the first radiator to a length of the first radiator is greater than or equal to 30%.

[0026] According to an embodiment of the present application, when the above ratio is greater than or equal to 30%, the first radiator and the second radiator can have better coupling characteristics, and the antenna has better radiation characteristics. When the first radiator and the second radiator completely overlap along the first direction, the coupling characteristics between the first radiator and the second radiator are optimal.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the second radiator is in a sheet shape, and in the first direction, the first end of the second radiator is close to the first side of the first radiator, the second end of the second radiator is far away from the second side of the first radiator, the first side is suspended, and at least a portion of the second side is coupled to the floor.

[0028] According to the embodiment of the present application, the edge of the second radiator may be a straight line, a curve, or a broken line, and the embodiment of the present application does not limit this. For the sake of simplicity of discussion, only the example of the edge being a straight line is used for explanation.

[0029] In combination with the first aspect, in some implementations of the first aspect, the antenna further includes a feeding circuit, one of the first radiator and the second radiator includes a feeding point, and the feeding circuit is coupled to the feeding point.

[0030] In combination with the first aspect, in certain implementations of the first aspect, the antenna further includes a feeding circuit and a feeding branch; wherein the feeding branch is spaced apart from the first radiator, the second radiator, and the floor, the feeding branch includes a feeding point, and the feeding circuit is coupled to the feeding point.

[0031] According to the embodiment of the present application, the feeding form of the antenna is not limited and can be determined according to the actual layout in the electronic device. For example, the feeding point can be located on the first radiator, the second radiator or a separately arranged feeding branch.

[0032] In combination with the first aspect, in some implementations of the first aspect, the first radiator and the second radiator are also used to generate a second resonance, the resonant frequency of the second resonance is lower than the resonant frequency of the first resonance, the resonant frequency band of the first resonance includes a first frequency band, and the resonant frequency band of the second resonance includes a second frequency band.

[0033] According to the embodiment of the present application, a novel antenna structure formed by a first radiator and a second radiator that are adjacently arranged may have multiple composite modes, thereby generating multiple resonances to expand the bandwidth of the antenna.

[0034] In combination with the first aspect, in some implementations of the first aspect, the first frequency band includes a 5G frequency band of WiFi, and the second frequency band includes a 2.4G frequency band of WiFi.

[0035] In combination with the first aspect, in certain implementations of the first aspect, the antenna also includes a parasitic branch, and the feeding branch is located between the parasitic branch and the second radiator; wherein the first end of the parasitic branch is a ground end, and the second end of the parasitic branch is an open end; and the ratio between the size of the parasitic branch along the first direction and the size of the parasitic branch along the second direction is greater than 1.

[0036] According to the embodiment of the present application, parasitic branches in the form of sheets can be used to generate parasitic resonance, thereby expanding the working bandwidth of the antenna.

[0037] In combination with the first aspect, in some implementations of the first aspect, the parasitic branch is used to generate a parasitic resonance, the resonant frequency of the parasitic resonance is lower than the resonant frequency of the first resonance, the resonant frequency band of the first resonance includes a first frequency band, and the resonant frequency band of the parasitic resonance includes a third frequency band.

[0038] According to an embodiment of the present application, when the feeding circuit feeds an electrical signal, the parasitic branch may generate a parasitic resonance. The resonant frequency band of the parasitic resonance may include a third frequency band. The efficiency (e.g., radiation efficiency and system efficiency) of the parasitic resonance generated by the parasitic branch is higher than the efficiency of the second resonance generated by the first radiator and the second radiator. Compared with the second resonance, using the resonant frequency band of the parasitic resonance as the communication frequency band can improve the radiation characteristics of the antenna in this frequency band.

[0039] In combination with the first aspect, in some implementations of the first aspect, the resonant frequency band of the first resonance includes a first frequency band, the first frequency band includes a 5G frequency band of WiFi, and the third frequency band includes a 2.4G frequency band of WiFi. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0041] Figure 2 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0042] Figure 3 yes Figure 2 The simulation results of the directivity coefficient of the antenna 200 in the electronic device 10 are shown.

[0043] Figure 4 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0044] Figure 5 yes Figure 4 The electronic device 10 is shown as a schematic cross-sectional view along line AA′.

[0045] Figure 6 yes Figure 4 The simulation results of the S parameters of the antenna 200 are shown.

[0046] Figure 7 yes Figure 4 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0047] Figure 8 yes Figure 4 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0048] Fig. 9 yes Figure 4 The diagram shows the electric field distribution of the antenna 200 at the first resonance point (eg, 5.2 GHz).

[0049] Fig.10 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0050] Fig.11 yes Fig.10 The simulation results of the S parameters of the antenna 200 are shown.

[0051] Fig.12 yes Fig.10 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0052] Fig.13 yes Fig.10 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0053] Fig.14 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0054] Fig.15 yes Fig.14 The simulation results of the S parameters of the antenna 200 are shown.

[0055] Fig.16 yes Fig.14 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0056] Fig.17 yes Fig.14 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0057] Fig.18 yes Fig.14 The simulation results of the S parameters of the antenna 200 are shown.

[0058] Fig.19 yes Fig.14 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0059] Fig. 20 yes Fig.14 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0060] Fig.21 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0061] Fig. 22 yes Fig.21 The simulation results of the S parameters of the antenna 200 are shown.

[0062] Fig.23 yes Fig.21 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0063] Fig.24 yes Fig.21 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0064] Fig.25 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0065] Fig.26 yes Fig.25The simulation results of the S parameters of the antenna 200 are shown.

[0066] Fig. 27 yes Fig.25 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0067] Fig.28 yes Fig.25 The directional pattern of the antenna 200 is shown at the resonance point of the parasitic resonance (eg, 2.4 GHz).

[0068] Fig.29 yes Fig.25 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0069] Fig.30 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0070] Fig.31 yes Fig.30 The simulation results of the S parameters of the antenna 200 are shown.

[0071] Fig.32 yes Fig.30 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0072] Fig.33 yes Fig.30 The radiation pattern of antenna 200 at 5.2 GHz is shown.

[0073] Fig.34 yes Fig.30 The radiation pattern of antenna 200 at 5.8 GHz is shown.

[0074] Fig.35 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0075] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0076] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0077] When used in this application, “within the range of…”, unless it is separately specified that an end value is not included, it is assumed that both end values ​​of the range are included. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0078] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the connection between different components in the circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by coupling between the gaps between two conductive parts to form an equivalent capacitor.

[0079] Component / device: includes at least one of lumped component / device and distributed component / device.

[0080] Lumped component / device: refers to the collective name for all components when the size of the component is much smaller than the wavelength relative to the circuit operating frequency. For the signal, regardless of any time, the component characteristics always remain fixed and are independent of frequency.

[0081] Distributed components / devices: Unlike lumped components, if the size of the component is similar to or larger than the wavelength relative to the circuit operating frequency, then when the signal passes through the component, the characteristics of each point of the component itself will vary due to changes in the signal. At this time, the component as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed component.

[0082] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0083] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts.

[0084] Radiator: It is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the "antenna" in a narrow sense is understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0085] The radiator may include a conductor with a specific shape and size, such as a linear or sheet shape, etc., and the present application does not limit the specific shape. In one embodiment, the linear radiator may be referred to as a linear antenna. In one embodiment, the linear radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a bracket conductor, and may also be referred to as a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted FAntenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes a circle, a rectangle, a ring, etc., and the present application does not limit the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0086] The radiator may also include a slot or a slit formed on the conductor, for example, a closed or semi-closed slot or slit formed on a grounded conductor surface. In one embodiment, a slotted or slitted radiator may be referred to as a slot antenna or a slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slit of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slit may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slit (e.g., an opening is added to a closed slot or slit) may be referred to as an open slot antenna. In some embodiments, the slot shape is a long strip. In some embodiments, the length of the slot is about half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the slot is about an integer multiple of the wavelength (e.g., one times the dielectric wavelength). In some embodiments, the slot can be fed by a transmission line connected across one or both sides thereof, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a conductive frame with both ends grounded, which can also be called a frame antenna; in this embodiment, it can be regarded as that the slot antenna or slot antenna includes a linear radiator, which is spaced apart from the floor and grounded at both ends of the radiator, thereby forming a closed or semi-closed slot or slot. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a bracket conductor with both ends grounded, which can also be called a bracket antenna.

[0087] The feed circuit is a combination of all circuits used for receiving and transmitting radio frequency signals. The feed circuit may include a transceiver and an RF front end circuit. In some cases, the "feed circuit" is understood in a narrow sense as a radio frequency chip (RFIC, radio frequency integrated circuit), and RFIC 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). Generally, it is considered to be part of the radio frequency.

[0088] In some embodiments, the electronic device may further include a test socket (or referred to as a radio frequency socket or a radio frequency test socket). The test socket may be used to insert a coaxial cable to test the characteristics of the radio frequency front-end circuit or the radiator of the antenna through the cable. The radio frequency front-end circuit may be considered as a circuit portion coupled between the test socket and the transceiver.

[0089] In some embodiments, the RF front-end circuit may be integrated into a RF front-end chip in the electronic device, or the RF front-end circuit and the transceiver may be integrated into a RF chip in the electronic device.

[0090] It should be understood that any two of the first / second / …Nth feeding circuits in the present application can share the same transceiver, for example, transmitting signals through a RF channel in a transceiver (for example, a port (pin) of a RF chip); they can also share a RF front-end circuit, for example, processing signals through a switch or amplifier in a RF front-end.

[0091] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuits in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0092] The matching circuit is a circuit used to adjust the radiation characteristics of the antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In one embodiment, the matching circuit is coupled between the test socket and the radiator. Generally, the matching circuit is a combination of circuits coupled between the radiator and the floor. In one embodiment, the matching circuit may include a switch and / or an electronic component, and the switch may be an electronic component for switching the coupling connection of the radiator. The matching circuit has the function of impedance matching and / or frequency tuning. Generally, it is considered to be a part of the antenna.

[0093] The grounding structure / feeding structure may include a connector, such as a metal spring, and the radiator is coupled to the floor through the grounding structure / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure may include a transmission line / feeding line, and the grounding structure may include a grounding line.

[0094] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator cannot be narrowly understood as an end point or end portion that is physically disconnected from other radiators, but can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end / point" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feed end / feeding point may be a coupling area on the antenna radiator that is coupled to the feed structure (for example, an area facing a portion of the feed structure). For another example, the ground end / grounding point may be a connection / coupling area on the antenna radiator that is coupled to the ground structure.

[0095] Open end, closed end: In some embodiments, the open end and the closed end are, for example, relative to whether they are grounded. The closed end is grounded, and the open end is not grounded. In some embodiments, the open end and the closed end are, for example, relative to other conductors. The closed end is electrically connected to other conductors, and the open end is not electrically connected to other conductors. In one embodiment, the open end can also be referred to as a 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 conductors can be coupled and connected through the open end to transfer coupling energy (which can be understood as transferring current).

[0096] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end, etc., can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by coupling electronic devices (for example, capacitors, inductors, etc.) through the closed end. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0097] In some embodiments, the "open end" can also be understood from the perspective of current distribution. The open end or suspended end, etc., can be understood as a point with smaller current on the radiator, or as a point with larger electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the smaller current point / larger electric field point.

[0098] It should be understood that coupling the radiator end at a gap (from the perspective of the structure of the radiator, it is similar to a radiator at an opening of an open end or a suspended end) with electronic devices (for example, capacitors, inductors, etc.) can make the radiator end a point with larger current / smaller electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0099] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feeder line / feeder branch and / or the grounding line / grounding branch, but is fed and / or grounded through indirect coupling.

[0100] It should be understood that the "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator can be, for example, a radiator disposed on the inner surface of the insulating back cover.

[0101] The current same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side is the same direction / reverse direction. For example, when stimulating a distributed current in the same direction on a conductor that is bent or annular (for example, the current path is also bent or annular), it should be understood that, for example, the main current stimulating on the conductors on both sides of the annular conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) is opposite in direction, but it still belongs to the definition of the distributed current in the same direction in the embodiments of the present application. In one embodiment, the current same direction on a conductor may refer to the current on the conductor having no reverse point. In one embodiment, the current reverse on a conductor may refer to the current on the conductor having at least one reverse point. In one embodiment, the current same direction on two conductors may refer to the current on both conductors having no reverse point and flowing in the same direction. In one embodiment, the current reverse on two conductors may refer to the current on both conductors having no reverse point and flowing in opposite directions. The current same direction / reverse direction on multiple conductors can be understood accordingly.

[0102] The electric field in the same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main electric field (for example, the electric field between the conductor and the floor) generated by the conductor in the space is in the same direction / reverse direction. For example, when a unidirectional distributed electric field is excited on a bent or ring-shaped conductor (for example, the gap formed between the floor and the conductor is also bent or ring-shaped), it should be understood that, for example, the direction of the electric field in the gap is from the floor to the conductor, or from the conductor to the floor. Although the main electric field excited in the gaps on both sides of the ring-shaped conductor (for example, a conductor surrounding a gap, in the gaps on both sides of the gap) is reversed in direction, it still belongs to the definition of the unidirectional distributed electric field in the embodiments of the present application. In one embodiment, the electric field in the same direction between a conductor and the floor can refer to the electric field between the conductor and the floor having no reverse point. In one embodiment, the electric field in the reverse direction between a conductor and the floor can refer to the electric field between the conductor and the floor having at least one reverse point. In one embodiment, the electric field in the same direction between two conductors and the floor can refer to the electric fields between the two conductors and the floor having no reverse point and radiating in the same direction (for example, the positive direction of the z-axis). In one embodiment, the electric field reversal between two conductors and the floor may mean that the electric fields between the two conductors and the floor have no reversal points and flow in opposite directions. The electric fields between multiple conductors and the floor may be understood to be in the same direction / opposite direction accordingly.

[0103] Resonance / resonance frequency: The resonance frequency is also called the resonance frequency. The resonance frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0104] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0105] Communication frequency band / working frequency band: Regardless of the type of antenna, it always works within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has a working frequency band that includes frequencies in the range of 2300MHz to 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.

[0106] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may cover one or more operating frequency bands of the antenna.

[0107] Electrical length: It can refer to the ratio of physical length (ie mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0108]

[0109] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0110] Wavelength: or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0111] It should be understood that the wavelength of the radiation signal in the air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×108 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Among them, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" may also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0112] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0113] Antenna pattern: also called radiation pattern. It refers to the graph of the relative field strength (normalized modulus) of the antenna radiation field changing with direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular plane patterns in the direction of maximum radiation of the antenna.

[0114] Antenna radiation patterns usually have multiple radiation beams. The radiation beam with the strongest radiation intensity is called the main lobe, and the remaining radiation beams are called side lobes or side lobes. Among the side lobes, the side lobe in the opposite direction of the main lobe is also called the back lobe.

[0115] Directivity: Also known as the directivity of an antenna. It refers to the ratio of the maximum power density to the average value on the antenna pattern at a certain distance from the antenna (far field), which is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of an antenna. The larger the directivity, the more energy the antenna radiates in a certain direction, and the more concentrated the energy radiation.

[0116] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0117] Antenna radiation efficiency: refers to the ratio of the power radiated by the antenna into space (i.e. the power of the electromagnetic wave part that is effectively converted) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power and the ohmic loss power of the metal and / or the dielectric loss power. The radiation efficiency is a value that measures the radiation ability of the antenna. Metal loss and dielectric loss are both factors that affect the radiation efficiency.

[0118] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0119] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmit power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0120] Antenna return loss can be represented by the S11 parameter, which is one of the S parameters. S11 represents the reflection coefficient, which can characterize the antenna transmission efficiency. The S11 parameter is usually a negative number. The smaller the S11 parameter is, the smaller the antenna return loss is, and the less energy is reflected back by the antenna itself, which means that more energy actually enters the antenna, and the higher the antenna system efficiency is; the larger the S11 parameter is, the greater the antenna return loss is, and the lower the antenna system efficiency is.

[0121] It should be noted that in engineering, the S11 value is generally -6dB as the standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or that the antenna has good transmission efficiency.

[0122] Ground (GND): can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "GND" can be used for grounding components in electronic devices. In one embodiment, "ground" can be a grounding layer of a circuit board of an electronic device, or a grounding plate formed by a frame of an electronic device, or a grounding metal layer formed by a metal film under a screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0123] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. It will be appreciated by those skilled in the art that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0124] Grounding: refers to coupling with the above-mentioned ground / floor in any way. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding (or physical ground) at a specific position on the frame through some structural parts of the middle frame. In one embodiment, grounding can be achieved through device grounding, such as grounding through devices such as capacitors / inductors / resistors connected in series or in parallel (or device ground).

[0125] The technical solution of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0126] like Figure 1 As shown, the electronic device 10 may include: a cover 13, a display screen / module (display) 15, a printed circuit board (PCB) 17, a middle frame (middle frame) 19 and a rear cover (rear cover) 21. It should be understood that in some embodiments, the cover 13 may be a glass cover, or may be replaced by a cover made of other materials, such as a PET (Polyethylene terephthalate) material cover.

[0127] The cover plate 13 may be disposed closely to the display module 15 , and may be mainly used to protect the display module 15 and prevent dust.

[0128] In one embodiment, the display module 15 may include a liquid crystal display panel (LCD), a light emitting diode (LED) display panel or an organic light emitting semiconductor (OLED) display panel, etc., but the embodiment of the present application does not limit this.

[0129] The middle frame 19 mainly supports the entire device. Figure 1It is shown that PCB17 is arranged between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, PCB17 can also be arranged between the middle frame 19 and the display module 15, and the embodiment of the present application does not limit this. Among them, the printed circuit board PCB17 can adopt a flame retardant material (FR-4) dielectric board, a Rogers dielectric board, a mixed dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a grade of flame retardant material, and the Rogers dielectric board is a high-frequency board. Electronic components, such as radio frequency chips, etc. are carried on PCB17. In one embodiment, a metal layer can be provided on the printed circuit board PCB17. The metal layer can be used for grounding the electronic components carried on the printed circuit board PCB17, and can also be used for grounding other components, such as bracket antennas, frame antennas, etc. The metal layer can be called a floor, a grounding plate, or a grounding layer. In one embodiment, the metal layer can be formed by etching metal on the surface of any layer of the dielectric board in PCB17. In one embodiment, the metal layer for grounding can be provided on the side of the printed circuit board PCB17 close to the middle frame 19. In one embodiment, the edge of the printed circuit board PCB17 can be regarded as the edge of its grounding layer. In one embodiment, the metal middle frame 19 can also be used for grounding the above components. The electronic device 10 can also have other floors / grounding plates / grounding layers, as described above, which will not be repeated here.

[0130] Due to the compactness of the interior of the electronic device, a floor / grounding plate / grounding layer is usually provided in the internal space 0-2 mm away from the inner surface of the frame (for example, a printed circuit board, a middle frame, a metal layer of a screen, a battery, etc. can all be regarded as part of the floor). In one embodiment, a medium is filled between the frame and the floor, and the inner surface contour of the filling medium and the length and width of the rectangle enclosed by the medium can be simply regarded as the length and width of the floor; the length and width of the rectangle enclosed by the contour formed by superimposing all the conductive parts inside the frame can also be regarded as the length and width of the floor.

[0131] The electronic device 10 may further include a battery (not shown). The battery may be disposed between the middle frame 19 and the back cover 21, or between the middle frame 19 and the display module 15, and the embodiment of the present application does not limit this. In some embodiments, the PCB 17 is divided into a main board and a sub-board, and the battery may be disposed between the main board and the sub-board, wherein the main board may be disposed between the middle frame 19 and the upper edge of the battery, and the sub-board may be disposed between the middle frame 19 and the lower edge of the battery.

[0132] The electronic device 10 may further include a frame 11, which may be formed of a conductive material such as metal. The frame 11 may be disposed between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 10. The frame 11 may have four sides surrounding the display module 15 to help fix the display module 15. In one implementation, the frame 11 made of a conductive material may be directly used as a conductive frame of the electronic device 10, for example, to form the appearance of a metal frame, suitable for a metal industrial design (ID). In one implementation, the outer surface of the frame 11 may be a conductive material, such as a metal material, to form the appearance of a metal frame. In these implementations, the conductive portion of the frame 11 may be used as an antenna radiator of the electronic device 10.

[0133] In another implementation, the outer surface of the frame 11 can also be a non-conductive material, such as plastic, to form the appearance of a non-metallic frame, suitable for non-metallic ID. In one implementation, the inner surface of the frame 11 may include a conductive material, such as a metal material. In this implementation, the conductive portion of the frame 11 can be used as an antenna radiator of the electronic device 10. It should be understood that the radiator (or book, the conductive material on the inner surface) arranged on the inner surface of the frame 11 is arranged in contact with the non-conductive material of the frame 11 to facilitate antenna radiation, and the conductive material and the non-conductive material should be regarded as part of the frame 11.

[0134] The middle frame 19 may include a border 11. The middle frame 19 including the border 11 is an integral part, which can support the electronic devices in the whole machine. The cover plate 13 and the back cover 21 are respectively covered along the upper and lower edges of the border to form a shell or housing (housing) of the electronic device. In one embodiment, the cover plate 13, the back cover 21, the border 11 and / or the middle frame 19 can be collectively referred to as the shell or housing of the electronic device 10. It should be understood that "shell or housing" can be used to refer to part or all of any one of the cover plate 13, the back cover 21, the border 11 or the middle frame 19, or to refer to part or all of any combination of the cover plate 13, the back cover 21, the border 11 or the middle frame 19.

[0135] The frame 11 can at least partially serve as an antenna radiator to receive / transmit radio frequency signals. There can be a gap between this portion of the frame that serves as the radiator and other portions of the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment. In one embodiment, the middle frame 19 can be provided with an aperture at this portion of the frame that serves as the radiator to facilitate the radiation of the antenna.

[0136] Alternatively, the frame 11 may not be considered as a part of the middle frame 19. In one embodiment, the frame 11 may be connected to the middle frame 19 and formed integrally. In another embodiment, the frame 11 may include a protrusion extending inward to be connected to the middle frame 19, for example, by means of a shrapnel, a screw, welding, etc. The protrusion of the frame 11 may also be used to receive a feed signal, so that at least a portion of the frame 11 serves as a radiator of the antenna to receive / transmit radio frequency signals. There may be a gap 42 between this portion of the frame that serves as a radiator and the middle frame 30, thereby ensuring that the antenna radiator has a good radiation environment, so that the antenna has a good signal transmission function.

[0137] The back cover 21 may be a back cover made of metal material; or a back cover made of non-conductive material, such as a glass back cover, a plastic back cover, or a back cover made of both conductive and non-conductive materials. In one embodiment, the back cover 21 made of conductive material may replace the middle frame 19 and be integrated with the frame 11 to support the electronic components in the whole device.

[0138] In one embodiment, the middle frame 19 and / or the conductive parts in the back cover 21 can be used as the reference ground of the electronic device 10, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the middle frame.

[0139] The antenna of the electronic device 10 can also be arranged in the frame 11. When the frame 11 of the electronic device 10 is a non-conductive material, the antenna radiator can be located in the electronic device 10 and arranged along the frame 11. For example, the antenna radiator is arranged close to the frame 11 to minimize the volume occupied by the antenna radiator and to be closer to the outside of the electronic device 10 to achieve better signal transmission effect. It should be noted that the antenna radiator is arranged close to the frame 11 means that the antenna radiator can be arranged close to the frame 11, or it can be arranged close to the frame 11, for example, there can be a certain small gap between the antenna radiator and the frame 11.

[0140] The antenna of the electronic device 10 may also be disposed in the housing, such as a bracket antenna, a millimeter wave antenna, etc. ( Figure 1). The clearance of the antenna disposed in the housing can be obtained by the slits / openings on any one of the middle frame, and / or the frame, and / or the back cover, and / or the display screen, or by the non-conductive gap / aperture formed between any of them. The clearance setting of the antenna can ensure the radiation characteristics of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive components in the electronic device 10, and the antenna radiates signals to the external space through the non-conductive area. In one embodiment, the antenna 40 can be in the form of an antenna based on a flexible printed circuit (FPC), an antenna based on laser direct structuring (LDS), or a microstrip disk antenna (MDA). In one embodiment, the antenna can also be a transparent structure embedded in the screen of the electronic device 10, so that the antenna is a transparent antenna unit embedded in the screen of the electronic device 10.

[0141] Figure 1 Only some components of the electronic device 10 are schematically shown, and the actual shapes, sizes and structures of these components are not subject to the present invention. Figure 1 limited.

[0142] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be considered as the front side, the surface where the back cover is located can be considered as the back side, and the surface where the frame is located can be considered as the side side.

[0143] It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side.

[0144] Figure 2 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0145] like Figure 2 As shown, the electronic device 10 includes a frame 11 and an antenna 200 .

[0146] It should be understood that for the sake of simplicity of discussion, in the embodiment of the present application, only the conductive part of the frame is shown in the drawings, wherein the black part of the frame 11 serves as the radiator of the antenna in the embodiment of the present application.

[0147] The frame 11 has a first position 201 and a second position 202. The frame 11 is coupled to the floor at the first position 201 and the second position 202.

[0148] The antenna 200 includes a radiator and a feeding circuit. The radiator is a conductive portion between the first position 201 and the second position 202. The radiator includes a feeding point, and the feeding circuit is coupled to the feeding point to feed an electrical signal to the antenna 200.

[0149] Figure 3 yes Figure 2 The directional pattern of the antenna 200 in the electronic device 10 is shown.

[0150] like Figure 3 As shown, the maximum radiation direction of antenna 200 is in the z direction, and the radiation characteristics in the direction parallel to the xoy plane are weak. The directivity coefficient of antenna 200 is 8.8dBi, which is relatively high. The communication capability of the electronic device in the direction parallel to the xoy plane is poor, which affects the user experience.

[0151] Among them, the larger the directivity coefficient, the greater the proportion of energy radiated by the antenna in a certain direction, and the more concentrated the energy radiation. When the directivity coefficient of the antenna is high, the proportion of energy radiated by the antenna in the maximum radiation direction is high, so the proportion of energy radiated by the antenna in other directions is low. When a user uses an electronic device that includes the antenna, the electronic device has good communication performance in the area near the maximum radiation direction of the antenna. When a user moves with the electronic device, and the device that transmits signals to the antenna (for example, a router) is not in the area near the maximum radiation direction of the antenna, the communication performance of the electronic device will deteriorate, affecting the user experience.

[0152] The present application provides an electronic device, including an antenna. The antenna includes a first radiator formed by a portion of a frame of the electronic device and a second radiator disposed adjacent to the first radiator. The antenna can have a low directivity coefficient characteristic through the first radiator and the second radiator, so that the electronic device has better communication performance.

[0153] Figure 4 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0154] like Figure 4 As shown, the electronic device 10 includes a frame 11 , an antenna 200 and a floor 300 .

[0155] At least part of the frame 11 is spaced apart from the floor 300. The frame 11 includes a first position 201 and a second position 202, and the frame 11 is coupled to the floor 300 at the first position 201 and the second position 202.

[0156] For the sake of simplicity, the coupling connection in the embodiments of the present application is described by taking direct coupling (electrical connection) as an example. In actual production or design, it can also be achieved by indirect coupling.

[0157] In one embodiment, the first position 201 and the second position 202 are coupled with the floor 300 to realize the grounding of the radiator. The first position 201 and the second position 202 can be electrically connected to the floor 300 through a spring, or can be electrically connected to the floor 300 through an inductor, or can be electrically connected to the floor 300 through a connecting rib structure. Electrically connecting to the floor 300 through the connecting rib can be understood as at least part of the frame 11 and the floor 300 being an integrated structure.

[0158] In one embodiment, the electronic device includes the above-mentioned middle frame, and the middle frame includes the above-mentioned frame 11 and the middle plate. In one embodiment, the middle plate is electrically connected to the floor 300 through multiple locations. In one embodiment, the middle plate can be regarded as a part of the floor 300. In one embodiment, the frame 11 is electrically connected to the middle plate through a connecting rib structure (not shown in the figure). The connecting rib structure (not shown in the figure) is connected between the frame and the middle plate, and is integrally formed with the frame and the middle plate.

[0159] The antenna 200 includes a first radiator 210 and a second radiator 220 .

[0160] The first radiator 210 includes a conductive portion of the frame 11 between the first position 201 and the second position 202. The second radiator 220 is spaced apart from the first radiator 210 and the floor 300. The second radiator 220 and the first radiator 210 at least partially overlap along a first direction (a projection of the second radiator 220 on the frame 11 along the first direction at least partially overlaps with the first radiator 210), and the first direction is a direction perpendicular to the extension direction of the first radiator 210 (for example, the y direction).

[0161] It should be understood that the extension direction of the first radiator 210 can be understood as the extension direction of the frame where the first position 201 or the second position 202 is located. For example, the first position 201 and the second position 202 are both located at the first side of the frame, and the extension direction of the first radiator 210 is the extension direction of the first side (for example, the x direction). Alternatively, the first position 201 and the second position 202 are respectively located at the first side and the second side of the frame that intersect at an angle, and the extension direction of the first radiator 210 includes the extension direction of the first side (for example, the x direction) and the extension direction of the second side (for example, the y direction), and the second radiator 220 and the first radiator 210 at least partially overlap in the vertical direction of any direction of the extension direction of the first radiator 210.

[0162] At the same time, the second radiator 220 is spaced from the first radiator 210 and the floor 300, which can be understood as the second radiator 220 and the first radiator 210 or the second radiator 220 and the floor 300 are not directly connected and a gap is formed. In the embodiment of the present application, the spacing setting can be understood accordingly. The second radiator 220 and the first radiator 210 are coupled through the gap.

[0163] The ratio of the size L2 of the second radiator 220 along the second direction to the size L3 of the second radiator 220 along the first direction is greater than 1, and the second radiator 220 may be in a sheet shape. The second direction is perpendicular to the first direction and may be the extension direction of the first radiator 210 (for example, the second direction is the x direction).

[0164] The first end and the second end of the first radiator 210 are grounded ends, and a structure similar to a slot antenna can be formed.

[0165] The first end of the second radiator 220 is an open end, and the second end is a ground end, so as to form a structure similar to a planar inverted F antenna. Figure 5 The distance between the first end of the second radiator 220 and the first radiator 210 is smaller than the distance between the second end of the second radiator 220 and the first radiator 210 .

[0166] It should be understood that the second end of the second radiator 220 is a ground end, which can be understood as at least a portion of the second end of the second radiator 220 is coupled and connected to the floor 300, and the embodiment of the present application does not limit this. In one embodiment, the antenna 200 may also include a metal spring, the first end of the spring is coupled and connected to the floor 300, and the second end is coupled and connected to the second end of the second radiator 220 to achieve grounding. In one embodiment, part of the second end of the second radiator 220 can be coupled and connected to the floor 300, for example, the edge between the second end and the first end of the second radiator 220 can also be partially grounded. In one embodiment, the second end of the second radiator 220 can be fully coupled and connected to the floor 300.

[0167] In one embodiment, the second radiator 220 is in a sheet shape. In the first direction, the first end of the second radiator 220 is close to the first side of the first radiator 210, the second end of the second radiator 220 is far from the second side of the first radiator 210, the first side is suspended (open) and not coupled to the floor 300, and at least part of the second side is coupled to the floor 300.

[0168] The edge of the second radiator 220 may be a straight line, a curve, or a broken line, and the embodiment of the present application does not limit this. For the sake of simplicity, the example of the edge being a straight line is used for description.

[0169] The distance D1 between the first radiator 210 and the second radiator 220 is less than or equal to 10 mm, so that the first radiator 210 and the second radiator 220 have good coupling characteristics and can resonate at the same time. In one embodiment, the distance D1 between the first radiator 210 and the second radiator 220 is less than or equal to 5 mm.

[0170] It should be understood that the distance D1 between the first radiator 210 and the second radiator 220 may be understood as the minimum value of the distance between a point on the first radiator 210 and a point on the second radiator 220 .

[0171] In one embodiment, the first radiator 210 and the second radiator 220 can be used to generate a first resonance. A distance D1 between the first radiator 210 and the second radiator 220 is less than or equal to a quarter of a first wavelength, which is a wavelength corresponding to the first resonance.

[0172] It should be understood that since the coupling characteristics between the first radiator 210 and the second radiator 220 are related to the frequency, the distance between the first radiator 210 and the second radiator 220 can also be determined according to the actual working frequency band of the antenna 200. The higher the frequency of the working frequency band, the closer the distance, and the lower the frequency of the working frequency band, the farther the distance. At the same time, the first wavelength is the wavelength corresponding to the first resonance, which can be understood as the vacuum wavelength corresponding to the resonance point frequency of the first resonance, or the vacuum wavelength corresponding to the center frequency of the resonance frequency band. Since there is a certain correspondence between the vacuum wavelength and the medium wavelength (working wavelength), the medium wavelength (working wavelength) can be determined by the vacuum wavelength.

[0173] The technical solution provided in the embodiment of the present application forms a new antenna structure by adjacently setting a first radiator 210 and a second radiator 220 (for example, a distance D1 is less than or equal to 10 mm or one quarter of the first wavelength). The first radiator 210 and the second radiator 220 are used to generate a composite antenna pattern (generated by the first radiator and the second radiator together, not by a single radiator) with a lower directivity coefficient, so that the electronic device 10 has good communication performance in all directions.

[0174] In one embodiment, the resonance point frequency of the first resonance is greater than or equal to 0.7 GHz and less than or equal to 6 GHz.

[0175] In one embodiment, the first radiator 210 and the second radiator 220 may be used to generate a first resonance. At a resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300 .

[0176] It should be understood that since the first radiator 210 can form a structure similar to a slot antenna, the second radiator 220 can form a structure similar to a planar inverted F antenna. The maximum radiation direction of the slot antenna is opposite to the maximum radiation direction of the planar inverted F antenna (for example, the maximum radiation direction of the slot antenna is the screen direction (for example, the positive direction of the z direction (z>0)), and the maximum radiation direction of the planar inverted F antenna is the back cover direction (for example, the negative direction of the z direction (z<0)). Since the electric field between the first radiator 210 and the second radiator 220 and the electric field between the first radiator 210 and the floor 300 can generate a magnetic field parallel to the floor 300 (for example, parallel to the xoy plane), the radiation characteristics of the antenna in the direction parallel to the floor 300 (for example, parallel to the xoy plane) are improved. Therefore, the antenna 200 can have a lower directivity coefficient, so that the electronic device 10 has good communication performance in all directions.

[0177] In one embodiment, the resonant frequency band of the first resonance may include a first frequency band. In one embodiment, the first frequency band may include a 2.4G frequency band or a 5G frequency band of WiFi. In one embodiment, the 2.4G frequency band may include 2.4 GHz-2.4835 GHz. In one embodiment, the 5G frequency band may include 5.17 GHz-5.33 GHz.

[0178] In one embodiment, the ratio of the length of the overlapping portion of the first radiator 210 and the second radiator 220 along the first direction (the overlapping portion of the projection of the second radiator 220 along the first direction on the frame 11 and the first radiator 210) to the length of the first radiator 210 is greater than or equal to 30%. In one embodiment, the ratio of the length of the overlapping portion of the first radiator 210 and the second radiator 220 along the first direction (the overlapping portion of the projection of the second radiator 220 along the first direction on the frame 11 and the first radiator 210) to the length of the first radiator 210 is greater than or equal to 50%.

[0179] In one embodiment, the first radiator 210 and the second radiator 220 completely overlap along the first direction.

[0180] It should be understood that when the above ratio is greater than or equal to 30%, the first radiator 210 and the second radiator 220 can have better coupling characteristics, and the antenna 200 has better radiation characteristics. When the first radiator 210 and the second radiator 220 completely overlap along the first direction, the coupling characteristics between the first radiator 210 and the second radiator 220 are optimal.

[0181] When the first position 201 and the second position 202 are respectively located at the first side and the second side of the frame that intersect at an angle, the extension direction of the first radiator 210 includes the extension direction of the first side (for example, the x direction) and the extension direction of the second side (for example, the y direction). The length of the overlapping part can be understood as the sum of the length of the overlapping part in the extension direction of the first side (for example, the x direction) and the length of the overlapping part in the extension direction of the second side (for example, the y direction).

[0182] In one embodiment, the length L1 of the first radiator 210 and the dimension L2 of the second radiator along the second direction (eg, x direction) satisfy: L1×50%≤L2≤L1×200%.

[0183] It should be understood that when the length L1 of the first radiator 210 and the dimension L2 of the second radiator 220 along the second direction are within the above range, it is beneficial to generate a composite mode of the first radiator 210 and the second radiator 220, and the radiation characteristics of the antenna 200 at the first resonance can be improved.

[0184] In one embodiment, the first radiator 210 may operate in a half wavelength mode. The electrical length of the first radiator 210 may be half of the first wavelength.

[0185] In one embodiment, the second radiator 220 may operate in a half wavelength mode. The electrical length of the second radiator 220 along the first direction is one quarter of the first wavelength.

[0186] In one embodiment, when the electronic components coupled to the first radiator 210 / the second radiator 220 can increase or decrease the physical length while the electrical length remains unchanged, the length L1 of the first radiator 210 and the dimension L3 of the second radiator along the first direction (e.g., the y direction) satisfy: L1×25%≤L3≤L1×75%.

[0187] In one embodiment, the size of the second radiator 220 along the first direction may be greater than or equal to 2 mm and less than or equal to 25 mm.

[0188] In one embodiment, the size of the second radiator 220 along the first direction may be greater than or equal to one twenty-fifth of the first wavelength and less than or equal to one half of the first wavelength.

[0189] It should be understood that the size of the second radiator 220 along the first direction can be used to adjust the coupling between the first radiator 210 and the second radiator 220 , thereby adjusting the resonance point frequency of the first resonance generated by the composite mode.

[0190] In one embodiment, a ratio between a dimension L2 of the second radiator 220 along the second direction and a dimension L3 of the second radiator 220 along the first direction is greater than 1 and less than or equal to 3.

[0191] It should be understood that the increase in the dimension L2 of the second radiator 220 along the second direction (eg, the x direction) can improve the radiation efficiency and system efficiency of the antenna 200 .

[0192] Meanwhile, the first radiator 210 may have a structure similar to a slot antenna, and the second radiator 220 may have a structure similar to a PIFA, which is beneficial to the generation of a composite mode of the first radiator 210 and the second radiator 220 .

[0193] In one embodiment, the antenna 200 may further include a bracket, and the second radiator 220 may be located on a surface of the bracket. In one embodiment, the second radiator 220 may be located on a surface of the electronic device 10, for example, on a surface facing the PCB.

[0194] In one embodiment, the antenna 200 may further include a feeding circuit 230. The second radiator 220 may include a feeding point 221, and the circuit 230 is coupled to the feeding point 221 to feed an electrical signal to the antenna 200.

[0195] In one embodiment, the electronic device 10 may be an electronic device with a large display screen, such as a tablet computer, a smart screen, a laptop computer, etc.

[0196] Figures 6 to 9 yes Figure 4 The simulation results of the antenna 200 in the electronic device 10 are shown. Figure 6 yes Figure 4 The simulation results of the S parameters of the antenna 200 are shown. Figure 7 yes Figure 4 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown. Figure 8 yes Figure 4 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz). Fig. 9 yes Figure 4 The diagram shows the electric field distribution of the antenna 200 at the first resonance point (eg, 5.2 GHz).

[0197] like Figure 6 As shown, the antenna can generate resonance near 2.8 GHz, near 5.2 GHz, and near 5.8 GHz. Among them, the resonance generated near 5.2 GHz is the first resonance in the above embodiment, and the resonance frequency band of the first resonance can include the 5G frequency band of WiFi.

[0198] like Figure 7As shown, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency.

[0199] like Figure 8 As shown, the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 3.7dBi, which can enable the electronic device to have good communication performance in all directions.

[0200] like Fig. 9 As shown, at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300. The electric field between the first radiator 210 and the second radiator 220 is directed from the first radiator 210 to the second radiator 220, for example, the electric field is along the negative direction of the y-axis. The electric field between the first radiator 210 and the floor 300 is directed from the floor 300 to the first radiator 210, for example, the electric field is along the positive direction of the y-axis.

[0201] Since the electric field between the first radiator 210 and the second radiator 220 and the electric field between the first radiator 210 and the floor 300 can both generate a magnetic field parallel to the floor 300 (for example, parallel to the xoy plane), for example, the directions of the magnetic fields are the same, along the positive direction of the z-axis, thereby improving the radiation characteristics of the antenna in a direction parallel to the floor 300 (for example, parallel to the xoy plane).

[0202] In one embodiment, since a magnetic field parallel to the floor 300 (e.g., parallel to the xoy plane) can be generated, the zero point of the directional pattern is not located in the circumference of the electronic device, thereby improving the radiation characteristics of the antenna in the direction parallel to the floor 300 (e.g., parallel to the xoy plane). The zero point of the directional pattern can be understood as the minimum point of the amplitude of the directional pattern.

[0203] Fig.10 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0204] like Fig.10 As shown, the first radiator 210 may include a feeding point 221 , and the feeding circuit 230 is coupled to the feeding point 221 .

[0205] It should be understood that Fig.10 The antenna 200 is shown with Figure 4 The antenna 200 shown differs only in the location of the feed point 221. Fig.10 In the antenna 200 shown, the feeding point 221 is located on the first radiator 210, and Figure 4 In the antenna 200 shown, the feeding point 221 is located on the second radiator 220, and two different feeding point 221 settings can have the same technical effect.

[0206] For the sake of brevity, Fig.10 The antenna 200 is shown with Figure 4 Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 are used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0207] Figures 11 to 13 yes Fig.10 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.11 yes Fig.10 The simulation results of the S parameters of the antenna 200 are shown. Fig.12 yes Fig.10 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown. Fig.13 yes Fig.10 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0208] like Fig.11 As shown, the antenna can generate resonance near 2.9 GHz, near 5.2 GHz, and near 5.8 GHz. Among them, the resonance generated near 5.2 GHz is the first resonance in the above embodiment, and the resonance frequency band of the first resonance can include the 5G frequency band of WiFi.

[0209] like Fig.12 As shown, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency.

[0210] like Fig.13 As shown, at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are substantially the same, and the directivity coefficient of the antenna is 2.04 dBi, which enables the electronic device to have good communication performance in all directions.

[0211] Fig.14 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0212] like Fig.14 As shown, the antenna 200 may further include a feeding branch 240. The feeding branch 240 is spaced apart from the first radiator 210, the second radiator 220, and the floor 300. The feeding branch 240 includes a feeding point 221, and the feeding circuit 230 is coupled to the feeding point 221.

[0213] In one embodiment, the distance between the first radiator 210 and the feeding branch 240 is less than or equal to 5 mm, and / or the distance between the feeding branch 240 and the second radiator 220 is less than or equal to 5 mm, so that the feeding branch 240 has a better coupling characteristic with the first radiator 210 and the second radiator 220, which can stimulate the first radiator 210 and the second radiator 220 to resonate.

[0214] It should be understood that the distance between the first radiator 210 or the second radiator 220 and the feeding branch 240 can be understood as the minimum value of the distance between a point on the radiator and a point on the feeding branch 240 .

[0215] In one embodiment, the first end and the second end of the feeding branch 240 may be open ends. In one embodiment, the first end and the second end of the feeding branch 240 may be grounded ends and the second end may be open ends. In one embodiment, the first end and the second end of the feeding branch 240 may be grounded ends.

[0216] It should be understood that in the embodiment of the present application, the feeding branch 240 is electrically connected to the feeding circuit 230, and the feeding branch 240 resonates with the first radiator 210 and the second radiator 220 through indirect coupling. The embodiment of the present application does not limit the boundary conditions of the feeding branch 240 (whether it is coupled with the floor 300), which can be determined according to actual production or design.

[0217] In one embodiment, the feeding branch 240 may be in a sheet shape, or a strip shape, or other shapes, which is not limited in the embodiment of the present application.

[0218] It should be understood that Fig.14 The antenna 200 is shown with Figure 4 The antenna 200 shown differs only in the location of the feed point 221. Fig.14 In the antenna 200 shown, the feeding point 221 is located on the feeding branch 240, and Figure 4 In the antenna 200 shown, the feeding point 221 is located on the second radiator 220, and two different feeding point 221 settings can have the same technical effect.

[0219] For the sake of brevity, Fig.14 The antenna 200 is shown with Figure 4Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 are used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0220] Figures 15 to 17 yes Fig.14 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.15 yes Fig.14 The simulation results of the S parameters of the antenna 200 are shown. Fig.16 yes Fig.14 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown. Fig.17 yes Fig.14 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0221] like Fig.15 As shown, the antenna can generate resonance near 3 GHz, near 5.2 GHz, and near 5.8 GHz. Among them, the resonance generated near 5.2 GHz is the first resonance in the above embodiment, and the resonance frequency band of the first resonance can include the 5G frequency band of WiFi.

[0222] like Fig.16 As shown, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency.

[0223] like Fig.17 As shown, at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are substantially the same, and the directivity coefficient of the antenna is 2.81 dBi, which enables the electronic device to have good communication performance in all directions.

[0224] It should be understood that Figure 4 , Fig.10 and Fig.14 In the electronic device 10 shown, the antenna 200 is fed by different feeding methods (in Figure 4 In the technical solution shown, the feeding circuit 230 is electrically connected to the second radiator 220; Fig.10 In the technical solution shown, the feeding circuit 230 is electrically connected to the first radiator 210; Fig.14 In the technical solution shown, the feeding circuit 230 is electrically connected to the feeding branch 240 , which can make the radiation characteristics of the antenna 200 in all directions roughly the same, and have the characteristics of a low directivity coefficient.

[0225] Figures 18 to 20 yes Fig.14 Another simulation result of the antenna 200 in the electronic device 10 is shown. Fig.18 yes Fig.14 The simulation results of the S parameters of the antenna 200 are shown. Fig.19 yes Fig.14 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown. Fig. 20 yes Fig.14 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0226] It should be understood that Fig.14 In the antenna 200 shown, the first radiator 210 and the second radiator 220 can also be used to generate a second resonance (for example, in the above simulation results, the second resonance can be a resonance generated near 3 GHz), and the resonance frequency of the second resonance is lower than the resonance frequency of the first resonance. The resonance frequency band of the second resonance can include a second frequency band.

[0227] When the electrical parameters of the antenna 200 are changed (for example, the size of the second radiator 220 along the second direction, the distance between the first radiator 210 and the second radiator 220, etc.), the coupling amount between the first radiator 210 and the second radiator 220 can be controlled, thereby adjusting the resonant frequency of the resonance generated by the antenna 200. In one embodiment, the resonant point frequency of the second resonance can be adjusted by the above electrical parameters. In one embodiment, the first frequency band may include a 5G frequency band of WiFi, and the second frequency band may include a 2.4G frequency band of WiFi. The antenna 200 can work in different frequency bands of WiFi at the same time to improve the communication performance of the electronic device 10.

[0228] For the sake of brevity, only Fig.14 The antenna 200 in the electronic device 10 is used as an example for description, and can also be applied to other technical solutions provided in the embodiments of the present application, which will not be described in detail.

[0229] like Fig.18 As shown, the antenna can generate resonance near 2.4 GHz, near 5.2 GHz, and near 5.8 GHz. Among them, the resonance generated near 5.2 GHz is the first resonance in the above embodiment, and the resonance frequency band of the first resonance can include the 5G frequency band of WiFi. The resonance generated near 2.4 GHz is the second resonance in the above embodiment, and the resonance frequency band of the second resonance can include the 2.4G frequency band of WiFi.

[0230] like Fig.19As shown in the figure, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency. In the 2.4G frequency band of WiFi, the radiation efficiency and system efficiency of the antenna are slightly lower than those of the antenna in the 5G frequency band of WiFi.

[0231] like Fig. 20 As shown, at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are substantially the same, and the directivity coefficient of the antenna is 2.8 dBi, which enables the electronic device to have good communication performance in all directions.

[0232] Fig.21 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0233] like Fig.21 As shown, the antenna 200 may further include an electronic component 241. The electronic component 241 is coupled between the first radiator 210 and the second radiator 220.

[0234] It should be understood that the electronic component 241 can be used to control the coupling amount between the first radiator 210 and the second radiator 220, thereby adjusting the resonant frequency of the resonance generated by the antenna 200. In one embodiment, the electronic component 241 can adjust the resonant point frequency of the second resonance. In one embodiment, the first frequency band may include a 5G frequency band of WiFi, and the second frequency band may include a 2.4G frequency band of WiFi. The antenna 200 can work in different frequency bands of WiFi at the same time to improve the communication performance of the electronic device 10.

[0235] For the sake of brevity, only Fig.14 The antenna 200 shown is used as an example for explanation. Fig.21 The technical solution shown can also be applied to Figure 4 and Fig.10 The antenna 200 is shown.

[0236] at the same time, Fig.21 The antenna 200 is shown with Fig.14 The antenna 200 shown differs only in the electronic component 241, Fig.21 The antenna 200 is shown with Fig.14 Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 are used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0237] Figure 22 to Figure 24 yes Fig.21 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig. 22 yes Fig.21 The simulation results of the S parameters of the antenna 200 are shown. Fig.23 yes Fig.21 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown. Fig.24 yes Fig.21 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0238] like Fig. 22 As shown, the antenna can generate resonance near 2.4 GHz, near 5.2 GHz, near 6 GHz, and near 7 GHz. Among them, the resonance generated near 5.2 GHz is the first resonance in the above embodiment, and the resonance frequency band of the first resonance can include the 5G frequency band of WiFi. The resonance generated near 2.4 GHz is the second resonance in the above embodiment, and the resonance frequency band of the second resonance can include the 2.4G frequency band of WiFi.

[0239] like Fig.23 As shown in the figure, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency. In the 2.4G frequency band of WiFi, the radiation efficiency and system efficiency of the antenna are slightly lower than those of the antenna in the 5G frequency band of WiFi.

[0240] like Fig.24 As shown, at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are substantially the same, and the directivity coefficient of the antenna is 2.81 dBi, which enables the electronic device to have good communication performance in all directions.

[0241] Fig.25 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0242] like Fig.25 As shown, the antenna 200 may further include a parasitic branch 250. The feeding branch 240 is located between the second radiator 220 and the parasitic branch 250. The parasitic branch 250 is spaced apart from the feeding branch 240 and the floor 300.

[0243] The ratio of the size of the parasitic stub 250 along the second direction (eg, the x direction) to the size of the parasitic stub 250 along the first direction (eg, the y direction) is greater than 1, and the parasitic stub 250 may be in a sheet shape.

[0244] The first end of the parasitic branch 250 is an open end and the second end is a ground end, which can form a structure similar to a planar inverted F antenna. In one embodiment, the distance between the first end of the parasitic branch 250 and the frame 11 is smaller than the distance between the second end of the parasitic branch 250 and the frame 11. The end of the parasitic branch 250 close to the frame 11 can be an open end, and the end away from the frame 11 can be a ground end.

[0245] It should be understood that when the feeding circuit 230 feeds an electrical signal, the parasitic branch 250 may generate a parasitic resonance. The resonant frequency band of the parasitic resonance may include a third frequency band. The antenna 200 may use the parasitic resonance to expand the working bandwidth.

[0246] Moreover, the efficiency (for example, radiation efficiency and system efficiency) of the parasitic resonance generated by the parasitic branch 250 is higher than the efficiency of the second resonance generated by the first radiator 210 and the second radiator 220. Compared with the second resonance, using the resonant frequency band of the parasitic resonance as the communication frequency band can improve the radiation characteristics of the antenna in this frequency band.

[0247] In one embodiment, a ratio between a size of the parasitic stub 250 along the second direction and a size of the parasitic stub 250 along the first direction is greater than 1 and less than or equal to 3.

[0248] In one embodiment, the distance between the parasitic stub 250 and at least one of the feeding stub 240 , the first radiator 210 , and the second radiator 220 is less than or equal to 5 mm.

[0249] It should be understood that for the sake of brevity, only Fig.14 The antenna 200 shown is used as an example for explanation. Fig.25 The technical solution shown can also be applied to Figure 4 and Fig.10 The antenna 200 is shown.

[0250] at the same time, Fig.25 The antenna 200 is shown with Fig.14 The antenna 200 shown differs only in the parasitic stub 250. Fig.25 The antenna 200 is shown with Fig.14 Similar parts of the antenna 200 shown are not repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 are used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0251] Figure 26 to Figure 29 yes Fig.25The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.26 yes Fig.25 The simulation results of the S parameters of the antenna 200 are shown. Fig. 27 yes Fig.25 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown. Fig.28 yes Fig.25 The directional pattern of the antenna 200 is shown at the resonance point of the parasitic resonance (eg, 2.4 GHz). Fig.29 yes Fig.25 The directional pattern of the antenna 200 is shown at a first resonant resonance point (eg, 5.2 GHz).

[0252] like Fig.26 As shown, the antenna can generate resonance near 2.4 GHz, near 3 GHz, near 4 GHz, near 5.2 GHz, near 5.8 GHz, near 6.5 GHz, and near 7.2 GHz. Among them, the resonance generated near 5.2 GHz is the first resonance in the above embodiment, and the resonance frequency band of the first resonance may include the 5G frequency band of WiFi. The resonance generated near 3 GHz is the second resonance in the above embodiment. The resonance generated near 2.4 GHz is the parasitic resonance in the above embodiment, and the resonance frequency band of the parasitic resonance may include the 2.4G frequency band of WiFi.

[0253] like Fig. 27 As shown in the figure, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency. In the 2.4G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency.

[0254] like Fig.28 As shown, at the resonance point of the parasitic resonance (eg, 2.4 GHz), the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 4.21 dBi, which can enable the electronic device to have good communication performance in all directions.

[0255] like Fig.29 As shown, at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are substantially the same, and the directivity coefficient of the antenna is 3.89 dBi, which enables the electronic device to have good communication performance in all directions.

[0256] Fig.30 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0257] like Fig.30 As shown, the ratio of the size L2 of the second radiator 220 along the second direction to the size L3 of the second radiator 220 along the first direction is greater than 3.

[0258] In one embodiment, a ratio between a dimension L2 of the second radiator 220 along the second direction and a dimension L3 of the second radiator 220 along the first direction is greater than or equal to 6.

[0259] It should be understood that as the ratio between the dimension L2 of the second radiator 220 along the second direction and the dimension L3 of the second radiator 220 along the first direction increases (for example, reducing the dimension L2 of the second radiator 220 along the second direction, and / or increasing the dimension L3 of the second radiator 220 along the first direction), the bandwidth of the antenna 200 in the resonant frequency band of the first resonance (for example, with S11<-4dB as the limit) increases, and the electronic device 10 can operate in more frequency bands.

[0260] Figure 31 to Figure 34 yes Fig.30 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.31 yes Fig.30 The simulation results of the S parameters of the antenna 200 are shown. Fig.32 yes Fig.30 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown. Fig.33 yes Fig.30 The radiation pattern of antenna 200 at 5.2 GHz is shown. Fig.34 yes Fig.30 The radiation pattern of antenna 200 at 5.8 GHz is shown.

[0261] like Fig.31 As shown, the antenna can generate resonance near 4 GHz, near 5.5 GHz, near 6.4 GHz, and near 7.2 GHz. Among them, the resonance generated near 5.5 GHz is the first resonance in the above embodiment, and the resonance frequency band of the first resonance can include the 5G frequency band of WiFi.

[0262] With S11<-2dB as the limit, the resonant frequency band of the antenna can include 5GHz-7.5GHz, which has a wider resonant frequency band.

[0263] like Fig.32 As shown, in the 5GHz-7.5GHz frequency band, the antenna has good radiation efficiency and system efficiency.

[0264] like Fig.33 and Fig.24 As shown, at 5.2 GHz and 5.8 GHz, the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficients of the antenna are 3.67 dBi and 4.11 dBi respectively, which can enable the electronic device to have good communication performance in all directions.

[0265] It should be understood that the technical solution provided in the embodiment of the present application can be applied to electronic devices under a full metal ID (metal is arranged around the antenna 200, for example, metal parts, display screens, frames, back covers, etc.). In one embodiment, the metal arranged around the antenna 200 at least partially overlaps with the first radiator or the second radiator along the first direction, the second direction or the third direction (the direction perpendicular to the second radiator). In a full metal ID, the antenna 200 radiates by utilizing the assembly gap between structural parts (or electronic parts) and structural parts (or electronic parts), or the insulating gap on the structural parts (or electronic parts), and can have good radiation characteristics, and is less affected by the metal arranged around it, thereby avoiding the opening of the conductive (for example, metal) appearance surface of the electronic device, which is beneficial to improving the appearance integrity and aesthetics of the electronic device.

[0266] Fig.35 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0267] like Fig.35 As shown in (a) of FIG. 1 , the electronic device 10 may be a personal computer (PC). The PC 10 may include a display screen portion 301 and a keyboard portion 302. It should be understood that the display screen portion 301 and the keyboard portion 302 are rotatably connected, and the display screen portion 301 and the keyboard portion 302 may be rotated along the connection portion so that the display screen portion 301 and the keyboard portion 302 are at different angles. In one embodiment, the display screen portion 301 and the keyboard portion 302 may be disassembled and assembled.

[0268] The display screen portion 301 may include a display module 3011 and a housing 3012. Fig.35 As shown in (b) in .

[0269] The display module 3011 may include a display area and a fixed area, the fixed area may be located in the circumference of the display area, and the fixed area may be used to connect with the housing 302. In one embodiment, the display module 3011 may include only the display area.

[0270] The housing 3012 may include the frame 11 in the above embodiment, and a back cover 21 connected to the frame 11. The frame 11 may be formed of a conductive material such as metal. The frame 11 may extend circumferentially around the periphery of the electronic device 10. The frame 11 may have four sides surrounding the display module 3011 to help fix the display module 3011.

[0271] In one embodiment, a gap is formed between the frame 11 and the four sides of the display module 3011, and a colloid may be filled in the gap so that the frame 11 is fixedly connected to the display module 3011. In addition, the gap may also be beneficial to improving the radiation performance of the antenna.

[0272] In one embodiment, the frame 11 and the back cover 21 may be an integrated structure, made of all metal. In one embodiment, the frame 11 may be made of metal, and the back cover 21 may be made of non-metal.

[0273] The antenna 200 provided in the embodiment of the present application may be located in the display screen portion 301, such as Fig.35 As shown in (a) in .

[0274] The first radiator 210 in the antenna 200 may be a part of the frame 11, and the second radiator 210 may be located between the back cover 21 and the display module 3011. Fig.35 In one embodiment, the first radiator 210 and the second radiator 220 may be located between the fixed area of ​​the display module 3011 and the back cover 21 .

[0275] It should be understood that in the above embodiments, for the sake of simplicity of discussion, the electronic device 10 is only taken as a mobile phone as an example. In actual production or design, the electronic device 10 may also be other types of electronic devices 10, such as a smart screen.

[0276] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: include: floor; a frame, at least a portion of which is spaced apart from the floor, the frame comprising a first position and a second position, the frame being coupled to the floor at the first position and the second position; An antenna, comprising: a first radiator, the first radiator comprising a conductive portion of the frame between the first position and the second position; a second radiator, the second radiator being spaced apart from the first radiator and the floor, and a projection of the second radiator on the frame along a first direction at least partially overlapping with the first radiator, wherein the first direction is a direction perpendicular to an extension direction of the first radiator; The first radiator and the second radiator are used to generate a first resonance, and a distance D1 between the first radiator and the second radiator is less than or equal to 10 mm or a quarter of a first wavelength, and the first wavelength is a wavelength corresponding to the first resonance; A ratio between a dimension L2 of the second radiator along a second direction X and a dimension L3 of the second radiator along the first direction Y is greater than 1, and the second direction is an extension direction of the first radiator; The first end of the second radiator is an open end, and the second end is a ground end. The distance between the first end of the second radiator and the first radiator is smaller than the distance between the second end of the second radiator and the first radiator.

2. The electronic device according to claim 1, characterized in that: The length L1 of the first radiator and the dimension L2 of the second radiator along the second direction satisfy: L1×50%≤L2≤L1×200%.

3. The electronic device according to claim 1 or 2, characterized in that: A ratio between a dimension L2 of the second radiator along the second direction X and a dimension L3 of the second radiator along the first direction Y is less than or equal to 3.

4. The electronic device according to any one of claims 1 to 3, characterized in that: A size of the second radiator along the first direction is greater than or equal to one twenty-fifth of the first wavelength and less than or equal to one half of the first wavelength.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The resonance point frequency of the first resonance is greater than or equal to 0.7 GHz and less than or equal to 6 GHz.

6. The electronic device according to claim 5, characterized in that: A size of the second radiator along the first direction is greater than or equal to 2 mm and less than or equal to 25 mm.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The antenna further includes an electronic component coupled between the first radiator and the second radiator.

8. The electronic device according to any one of claims 1 to 7, characterized in that: A ratio of a length of a projection of the second radiator on the frame along the first direction and an overlapping portion of the first radiator to a length of the first radiator is greater than or equal to 30%.

9. The electronic device according to any one of claims 1 to 8, characterized in that: The second radiator is in a sheet shape. In the first direction, the first end of the second radiator is close to the first side of the first radiator, the second end of the second radiator is far away from the second side of the first radiator, the first side is suspended, and at least part of the second side is coupled to the floor.

10. The electronic device according to any one of claims 1 to 9, characterized in that: The antenna further includes a feeding circuit, one of the first radiator and the second radiator includes a feeding point, and the feeding circuit is coupled to the feeding point.

11. The electronic device according to any one of claims 1 to 9, characterized in that: The antenna also includes a feeding circuit and a feeding branch; The feeding branch is spaced apart from the first radiator, the second radiator and the floor, the feeding branch includes a feeding point, and the feeding circuit is coupled to the feeding point.

12. The electronic device according to any one of claims 1 to 11, characterized in that: The first radiator and the second radiator are also used to generate a second resonance, the resonance frequency of the second resonance is lower than the resonance frequency of the first resonance, the resonance frequency range of the first resonance includes a first frequency range, and the resonance frequency range of the second resonance includes a second frequency range.

13. The electronic device according to claim 12, characterized in that: The first frequency band includes a 5G frequency band of WiFi, and the second frequency band includes a 2.4G frequency band of WiFi.

14. The electronic device according to claim 11, characterized in that: The antenna further comprises a parasitic branch, wherein the feeding branch is located between the parasitic branch and the second radiator; Wherein, the first end of the parasitic branch is a grounded end, and the second end of the parasitic branch is an open end; A ratio between a size of the parasitic branch along the first direction and a size of the parasitic branch along the second direction is greater than 1.

15. The electronic device according to claim 14, characterized in that: The parasitic branch is used to generate a parasitic resonance, the resonant frequency of the parasitic resonance is lower than the resonant frequency of the first resonance, the resonant frequency band of the first resonance includes a first frequency band, and the resonant frequency band of the parasitic resonance includes a third frequency band.

16. The electronic device according to claim 15, characterized in that: The resonant frequency band of the first resonance includes a first frequency band, the first frequency band includes a 5G frequency band of WiFi, and the third frequency band includes a 2.4G frequency band of WiFi.

17. The electronic device according to any one of claims 1 to 16, characterized in that: At the resonance point of the first resonance, the electric field between the first radiator and the second radiator is opposite to the electric field between the first radiator and the floor.

18. The electronic device according to any one of claims 1 to 17, characterized in that: At the resonance point of the first resonance, the magnetic field between the first radiator and the second radiator and the magnetic field between the first radiator and the floor are parallel to the floor.

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