Electronic equipment

Abstract

The invention provides electronic equipment, which comprises an antenna, and the antenna takes a conductive part of a frame of the electronic equipment as a radiator. The antenna comprises a first radiator and a second radiator. The first radiator includes a conductor portion of the bezel between the first position and the second position. The second radiator includes a conductor portion of the bezel between the second position and the third position. The frame is provided with gaps at the first position, the second position and the third position. Wherein the first position and the second position are located at the top of the electronic equipment.

Description

Technical Field

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

[0002] Currently, existing terminal electronic devices use frames as antenna radiators. For example, in satellite navigation or satellite communication systems, frame radiators are mainly used to form linear polarization antennas. When users perform satellite navigation or satellite communication, they need to point the maximum radiation direction of the antenna toward the satellite to achieve satellite alignment (establish a communication connection with the satellite). However, the maximum radiation direction of the linear polarization antenna formed by the frame radiator is perpendicular to the display screen of the electronic device. When users perform satellite navigation or communication, they need to point the screen toward the sky, which causes great inconvenience in use. Summary of the invention

[0003] The present application provides an electronic device, which includes an antenna, wherein the antenna uses a conductive part of a frame of the electronic device as a radiator.

[0004] In a first aspect, an electronic device is provided, comprising: a frame, comprising a first position, a second position and a third position arranged in sequence, the frame respectively having a first slit, a second slit and a third slit at the first position, the second position and the third position, the frame further comprising a first side and a second side intersecting at an angle, the length of the first side being greater than the length of the second side, the first position and the second position being located at the second side, and the third position being located at the first side; an antenna, comprising: a first radiator and a second radiator, the first radiator being a conductive part of the frame between the first position and the second position, the second radiator being a conductive part of the frame between the second position and the third position, a first feeding circuit, the first radiator or the second radiator comprising a first feeding point, the first feeding point being located at the second side, the first feeding circuit being coupled to the first feeding point, a first tuning circuit and a second tuning circuit, the first radiator comprising a first connection point, the second radiator comprising a second connection point, the first tuning circuit being coupled to the second connection point, and the second tuning circuit being coupled to the first connection point.

[0005] In combination with the first aspect, in certain implementations of the first aspect, the length of the first part is greater than or equal to one half of the length of the second part, and less than or equal to three halfs of the length of the second part, the first part is the part of the second radiator on the first side, and the second part is the part of the second radiator on the second side.

[0006] In combination with the first aspect, in certain implementations of the first aspect, the first tuning circuit is in a first circuit state, the first radiator is used to generate a first resonance, and the resonant frequency band of the first resonance includes a first frequency band; the second tuning circuit is in the first circuit state, the second radiator is used to generate a second resonance, and the resonant frequency band of the second resonance includes a second frequency band.

[0007] In combination with the first aspect, in some implementations of the first aspect, the first feeding circuit includes a first RF channel and a second RF channel, the first RF channel is used to feed signals in the first frequency band, and the second RF channel is used to feed signals in the second frequency band.

[0008] In combination with the first aspect, in some implementations of the first aspect, the antenna also includes a second feeding circuit; the first radiator includes the first feeding point, the second radiator includes a second feeding point, the second feeding point is located at the second side, and the second feeding circuit is coupled to the second feeding point.

[0009] In combination with the first aspect, in some implementations of the first aspect, at a resonance point of the first resonance, currents on the first radiator are in the same direction; and at a resonance point of the second resonance, currents on the second radiator are in the same direction.

[0010] In combination with the first aspect, in some implementations of the first aspect, the electronic device also includes a floor; the frame also includes a first grounding point and a second grounding point, the frame is coupled to the floor at the first grounding point and the second grounding point, the first grounding point is located between the first feeding point and the first connection point, and the second grounding point is located between the second feeding point and the second connection point.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the antenna also includes a third tuning circuit and a fourth tuning circuit; the first radiator includes a third connection point, the second radiator includes a fourth connection point, the first grounding point is located between the first connection point and the third connection point, the second grounding point is located between the second connection point and the fourth connection point, the third tuning circuit is coupled to the third connection point, and the fourth tuning circuit is coupled to the fourth connection point.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the first tuning circuit and the third tuning circuit are in a first circuit state, the first radiator is used to generate a first resonance and a third resonance, and the resonance point frequency of the third resonance is lower than the resonance point frequency of the first resonance; the second tuning circuit and the fourth tuning circuit are in the first circuit state, the second radiator is used to generate a second resonance and a fourth resonance, and the resonance point frequency of the fourth resonance is lower than the resonance point frequency of the second resonance.

[0013] In combination with the first aspect, in some implementations of the first aspect, the frequency difference between the resonance point of the first resonance and the resonance point of the third resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz, and / or the frequency difference between the resonance point of the second resonance and the resonance point of the fourth resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz.

[0014] In combination with the first aspect, in some implementations of the first aspect, a frequency difference between a resonance point of the third resonance and a resonance point of the second resonance is greater than or equal to 200 MHz and less than or equal to 500 MHz.

[0015] In combination with the first aspect, in some implementations of the first aspect, the electronic device also includes a first grounding piece, and the frame is coupled to the floor through the first grounding piece at the first grounding point; the width of the connection between the first grounding piece and the frame is greater than or equal to 2 mm and less than or equal to 8 mm.

[0016] In combination with the first aspect, in some implementations of the first aspect, the electronic device also includes a second grounding piece, and the frame is coupled to the floor through the second grounding piece at the second grounding point; the width of the connection between the second grounding piece and the frame is greater than or equal to 2 mm and less than or equal to 12 mm.

[0017] In a second aspect, an electronic device is provided, comprising: a frame, comprising a first position, a second position, a third position and a fourth position arranged in sequence, the frame respectively having a first slit, a second slit, a third slit and a fourth slit at the first position, the second position, the third position and the fourth position, the frame further comprising a first side, a second side and a third side, the first side and the third side intersecting the second side at an angle, the length of the first side being greater than the length of the second side, the length of the third side being greater than the length of the second side, the first position and the second position being located at the second side, the third position being located at the first side, and the fourth position being located at the third side; an antenna, comprising: a first radiator and a second radiator, the The first radiator is the conductive part of the frame between the first position and the fourth position, the second radiator is the conductive part of the frame between the second position and the third position, a first feeding circuit, a second feeding circuit, the first radiator includes a first feeding point, the second radiator includes a second feeding point, the first feeding point and the second feeding point are located on the second side, the first feeding circuit is coupled to the first feeding point, the second feeding circuit is coupled to the second feeding point, a first tuning circuit and a second tuning circuit, the first radiator includes a first connection point, the second radiator includes a second connection point, the first tuning circuit is coupled to the second connection point, and the second tuning circuit is coupled to the first connection point.

[0018] In combination with the second aspect, in some implementations of the second aspect, the length of the first part is greater than or equal to one half of the length of the second part, and less than or equal to two thirds of the length of the second part, the first part is the part of the first radiator on the first side, and the second part is the part of the first radiator on the second side, and / or the length of the third part is greater than or equal to one half of the length of the fourth part, and less than or equal to two thirds of the length of the fourth part, the third part is the part of the second radiator on the third side, and the fourth part is the part of the second radiator on the second side.

[0019] In combination with the second aspect, in certain implementations of the second aspect, the first tuning circuit is in a first circuit state, the first radiator is used to generate a first resonance, and the resonant frequency band of the first resonance includes a first frequency band; the second tuning circuit is in the first circuit state, the second radiator is used to generate a second resonance, and the resonant frequency band of the second resonance includes a second frequency band.

[0020] In combination with the second aspect, in some implementations of the second aspect, at a resonance point of the first resonance, currents on the first radiator are in the same direction; and at a resonance point of the second resonance, currents on the second radiator are in the same direction.

[0021] In combination with the second aspect, in some implementations of the second aspect, the electronic device also includes a floor; the frame also includes a first grounding point and a second grounding point, the frame is coupled to the floor at the first grounding point and the second grounding point, the first grounding point is located between the first feeding point and the first connection point, and the second grounding point is located between the second feeding point and the second connection point.

[0022] In combination with the second aspect, in certain implementations of the second aspect, the antenna also includes a third tuning circuit and a fourth tuning circuit; the first radiator includes a third connection point, the second radiator includes a fourth connection point, the first grounding point is located between the first connection point and the third connection point, the second grounding point is located between the second connection point and the fourth connection point, the third tuning circuit is coupled to the third connection point, and the fourth tuning circuit is coupled to the fourth connection point.

[0023] In combination with the second aspect, in certain implementations of the second aspect, the first tuning circuit and the third tuning circuit are in a first circuit state, the first radiator is used to generate a first resonance and a third resonance, and the resonance point frequency of the third resonance is lower than the resonance point frequency of the first resonance; the second tuning circuit and the fourth tuning circuit are in the first circuit state, the second radiator is used to generate a second resonance and a fourth resonance, and the resonance point frequency of the fourth resonance is lower than the resonance point frequency of the second resonance.

[0024] In combination with the second aspect, in some implementations of the second aspect, the frequency difference between the resonance point of the first resonance and the resonance point of the third resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz, and / or the frequency difference between the resonance point of the second resonance and the resonance point of the fourth resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz.

[0025] In combination with the second aspect, in some implementations of the second aspect, the electronic device also includes a first grounding piece, and the frame is coupled to the floor through the first grounding piece at the first grounding point; the width of the connection between the first grounding piece and the frame is greater than or equal to 2 mm and less than or equal to 12 mm.

[0026] In combination with the second aspect, in some implementations of the second aspect, the electronic device also includes a second grounding piece, and the frame is coupled to the floor through the second grounding piece at the second grounding point; the width of the connection between the second grounding piece and the frame is greater than or equal to 1 mm and less than or equal to 20 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0028] Figure 2 This is a schematic diagram of the common mode structure of a wire antenna provided by the present application and the corresponding current and electric field distribution.

[0029] Figure 3 This is a schematic diagram of the structure of the differential mode of another wire antenna provided in the present application and the corresponding current and electric field distribution.

[0030] Figure 4 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0031] Figure 5 yes Figure 4 The S-parameter simulation results of the antenna 100 in the electronic device 10 are shown.

[0032] Figure 6 yes Figure 4 The simulation results of system efficiency and radiation efficiency of the antenna 100 in the electronic device 10 are shown.

[0033] Figure 7 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0034] Figure 8 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0035] Fig. 9 yes Figure 8 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0036] Fig.10 yes Figure 8 The simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0037] Fig.11 yes Figure 8 The current distribution diagram corresponding to the antenna 200 in the electronic device 10 working at the first resonance (for example, 2.5 GHz) is shown.

[0038] Fig.12 yes Figure 8 The current distribution diagram corresponding to the antenna 200 in the electronic device 10 working at the second resonance (eg, 1.62 GHz) is shown.

[0039] Fig.13 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 2.5 GHz).

[0040] Fig.14 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 1.62 GHz).

[0041] Fig.15 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 2.5 GHz).

[0042] Fig.16 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 1.62 GHz).

[0043] Fig.17 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0044] Fig.18 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 1.62 GHz).

[0045] Fig.19 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 2.5 GHz).

[0046] Fig. 20 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 1.62 GHz).

[0047] Fig.21 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 2.5 GHz).

[0048] Fig. 22 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0049] Fig.23 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0050] Fig.24 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0051] Fig.25 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0052] Fig.26 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0053] Fig. 27 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0054] Fig.28 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The following explains the terms that may appear in the embodiments of the present application.

[0056] 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.

[0057] As used in this application, “in the range of…” includes both end values ​​of the range by default. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0058] 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.

[0059] Component / device: includes at least one of lumped component / device and distributed component / device.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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 an RF 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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).

[0076] 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).

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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 currents stimulated 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) are opposite in direction, but they still belong to the definition of the distributed current in the same direction in 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 currents 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 currents 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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:

[0088]

[0089] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0090] 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.

[0091] 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.

[0092] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0093] 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.

[0094] 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.

[0095] 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. It is usually represented by two mutually perpendicular plane patterns passing through the antenna's maximum radiation direction.

[0096] 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.

[0097] 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.

[0098] Antenna gain: It is used to characterize the degree to which the antenna radiates the input power. Generally, the narrower the main lobe of the antenna pattern and the smaller the side lobe, the higher the antenna gain.

[0099] Polarization direction of the line: At a given point in space, the electric field strength E (vector) is a function of time t. As time goes by, the endpoints of the vector periodically draw a trajectory in space. If the trajectory is a straight line and perpendicular to the ground, it is called vertical polarization. If it is horizontal to the ground, it is called horizontal polarization. If the trajectory is an ellipse or a circle, when observed along the propagation direction, it rotates in the right hand or clockwise direction over time, which is called right-hand circular polarization (RHCP). If it rotates in the left hand or counterclockwise direction over time, it is called left-hand circular polarization (LHCP).

[0100] Axial ratio (AR) of the antenna: Under circular polarization, the electric field vector endpoints periodically draw a trajectory in space as an ellipse. The ratio of the major axis to the minor axis of the ellipse is called the axial ratio. The axial ratio is an important performance indicator of circularly polarized antennas. It represents the purity of circular polarization and is an important indicator for measuring the difference in signal gain of the whole device in different directions. The closer the circular polarization axial ratio of the antenna is to 1 (the electric field vector endpoints periodically draw a trajectory in space as a circle), the better its circular polarization performance.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] Grounding: refers to coupling with the above-mentioned ground / floor through a grounding structure and / or a grounding circuit. 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 members 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).

[0107] The technical solution of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0108] like Figure 1As 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] In one implementation, the frame 11 made of a conductive material can be directly used as a conductive frame of the electronic device 10, for example, forming the appearance of a metal frame, suitable for a metal industrial design (ID). In one implementation, the outer surface of the frame 11 can 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 can be used as an antenna radiator of the electronic device 10.

[0115] 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.

[0116] 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.

[0117] The frame 11 on the middle frame 19 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 serving 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 serving as the radiator to facilitate antenna radiation.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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 (not shown). The clearance of the antenna arranged in the shell 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 adopt a transparent structure embedded in the screen of the electronic device 10, so that the antenna is a transparent antenna embedded in the screen of the electronic device 10.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] An embodiment of the present application provides an electronic device, which includes an antenna. The antenna uses a conductive part of a frame of the electronic device as a main radiator and a parasitic branch, which can enhance the user experience when performing satellite navigation or communication.

[0127] First, by Figure 2 and Figure 3 To introduce this application, two antenna modes will be involved. Among them, Figure 2 This is a schematic diagram of the common mode structure of an antenna provided in the present application and the corresponding current and electric field distribution. Figure 3 This is a schematic diagram of the structure of the differential mode of another antenna provided in the present application and the corresponding current and electric field distribution. Figure 2 and Figure 3 The antenna radiator is open at both ends, and its common mode mode and differential mode can be called line common mode mode and line differential mode mode respectively.

[0128] It should be understood that the “common-differential mode” or “CM-DM mode” in the present application refers to a line common mode mode and a line differential mode mode generated on the same radiator.

[0129] Figure 2 (a) in the figure shows that the radiator of the antenna 40 is open at both ends, and is connected to a feeding circuit (not shown) at the middle position 41. In one embodiment, the feeding form of the antenna 40 adopts symmetrical feed. The feeding circuit can be connected to the middle position 41 of the antenna 40 through a feeding line 42. It should be understood that symmetrical feeding can be understood as one end of the feeding circuit is connected to the radiator, and the other end is coupled to the floor to achieve grounding, wherein the connection point between the feeding circuit and the radiator (feeding point) is located at the center of the radiator, and the center of the radiator can be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or an area within a certain range near the above midpoint).

[0130] The middle position 41 of the antenna 40 may be, for example, the geometric center of the antenna, or the midpoint of the electrical length of the radiator. For example, the connection between the feed line 42 and the antenna 40 covers the middle position 41 .

[0131] Figure 2 (b) in FIG. 4 shows the current and electric field distribution of the antenna 40. Figure 2 As shown in (b), the current is distributed in opposite directions on both sides of the middle position 41, for example, symmetrically; the electric field is distributed in the same direction on both sides of the middle position 41. Figure 2 As shown in (b) in FIG. 4 , the current at the feeder 42 is distributed in the same direction. Based on the current distribution in the feeder 42, Figure 2 The feeding shown in (a) in FIG. 4 is called line CM feeding. Based on the reverse distribution of the current on both sides of the connection between the radiator and the feeding line 42, Figure 2 The antenna mode shown in (b) in the figure can be called a linear CM mode (it can also be simply referred to as a CM mode. For example, for a linear antenna, the CM mode refers to a linear CM mode). Figure 2 The current and electric field shown in (b) can be called the current and electric field of the line CM mode, respectively.

[0132] The current is stronger at the middle position 41 of the antenna 40 (the current is stronger near the middle position 41 of the antenna 40), and weaker at both ends of the antenna 40, such as Figure 2 As shown in (b) in FIG. 4 , the electric field is weak at the middle position 41 of the antenna 40 and is strong at both ends of the antenna 40 .

[0133] 2. Line differential mode (DM) mode

[0134] like Figure 3 (a) in the figure shows that the left and right ends of the two radiators of the antenna 50 are open ends, and the feeding circuit is connected at the middle position 51. In one embodiment, the feeding form of the antenna 50 adopts anti-symmetrical feed. One end of the feeding circuit is connected to one of the radiators through the feeding line 52, and the other end of the feeding circuit is connected to the other radiator through the feeding line 52. The middle position 51 can be the geometric center of the antenna 50, or the gap formed between the radiators.

[0135] It should be understood that the "center antisymmetric feeding" mentioned in this application can be understood as that the positive and negative poles of the feeding unit are respectively connected to two connection points near the above-mentioned midpoint of the radiator. In one embodiment, the positive and negative poles of the feeding unit output signals with the same amplitude and opposite phases, for example, the phase difference is 180°±10°.

[0136] Figure 3 (b) in FIG. 5 shows the current and electric field distribution of the antenna 50. Figure 3As shown in (b) of FIG. 5 , the current is distributed in the same direction on both sides of the middle position 51 of the antenna 50, for example, in an anti-symmetrical distribution; and the electric field is distributed in opposite directions on both sides of the middle position 51. Figure 3 As shown in (b) in FIG. 5 , the current at the feeder 52 presents a reverse distribution. Based on the reverse distribution of the current at the feeder 52, Figure 3 The feeding shown in (a) in FIG. 5 is called line DM feeding. Based on the fact that the current is distributed in the same direction on both sides of the connection between the radiator and the feeding line 52, Figure 3 The antenna mode shown in (b) can be called a linear DM mode (can also be simply referred to as a DM mode. For example, for a linear antenna, the DM mode refers to a linear DM mode). Figure 3 The current and electric field shown in (b) can be called the current and electric field of the line DM mode, respectively.

[0137] The current is stronger at the middle position 51 of the antenna 50 (the current is stronger near the middle position 51 of the antenna 50), and weaker at both ends of the antenna 50, such as Figure 3 As shown in (b) in FIG. 5 , the electric field is weak at the middle position 51 of the antenna 50 and is strong at both ends of the linear antenna 50 .

[0138] It should be understood that the antenna radiator can be understood as a metal structure that generates radiation, and the number of the metal structure can be one, such as Figure 2 As shown, or, it can be two pieces, such as Figure 3 As shown, it can be adjusted according to actual design or production needs. For example, for the line CM mode, it can also be Figure 3 As shown, two radiators are used, and the two ends of the two radiators are arranged opposite to each other and separated by a gap. A symmetrical feeding method is adopted at the two ends close to each other. For example, the same feed source signal is fed to the two ends close to each other, and the same Figure 2 The antenna structure shown in FIG. 1 has a similar effect. Correspondingly, for the line DM mode, it can also be Figure 2 As shown in the figure, a radiator is used, two feeding points are set at the middle position of the radiator and an antisymmetric feeding method is adopted. For example, if two symmetrical feeding points on the radiator are fed with signals with the same amplitude and opposite phases respectively, the same power supply as in the embodiment of the present invention can be obtained. Figure 3 The antenna structure shown has a similar effect.

[0139] 3. Line CM-DM mode

[0140] Above Figure 2 and Figure 3 It is shown that when both ends of the radiator are open, a line CM mode and a line DM mode are generated by using different feeding methods.

[0141] When the antenna is fed in an asymmetric way (the feeding point is offset from the middle of the radiator, including side feeding or offset feeding), or the grounding point of the radiator (where it is coupled with the floor) is asymmetric (the grounding point is offset from the middle of the radiator), the antenna can simultaneously generate the first resonance and the second resonance, corresponding to the line CM mode and the line DM mode, respectively. For example, the first resonance corresponds to the line CM mode, and the current and electric field distribution are as follows: Figure 2 The second resonance corresponds to the line DM mode, and the current and electric field distribution are shown in (b). Figure 3 As shown in (b) in .

[0142] Figure 4 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0143] like Figure 4 As shown, the conductive frame 11 of the electronic device 10 may include a first side 131 and a second side 132 intersecting at an angle, and the length of the first side 131 is greater than the length of the second side 132 .

[0144] The second side 132 may have a first position 101 and a second position 102, and the frame 11 may have gaps at the first position 101 and the second position 102. The radiator 105 of the antenna 100 may include a conductive portion of the frame between the first position 101 and the second position 102.

[0145] In one embodiment, the first frame 105 is symmetrical along the virtual axis of the second side 132, and the lengths of the second sides 132 on both sides of the virtual axis are the same. Due to certain errors in engineering applications, when the ratio of the distances between the first position 101 and the second position 102 and the virtual axis is greater than or equal to 90% and less than or equal to 110%, it can be considered that the first frame 105 is symmetrical along the virtual axis of the second side 132.

[0146] It should be understood that, for an antenna, as the structure of the antenna becomes more symmetrical (for example, the radiator 105 is located at the center of the second side 132 ), the radiation characteristics of the antenna are improved (for example, bandwidth, radiation efficiency, etc.).

[0147] Figure 5 and Figure 6 yes Figure 4 The simulation result diagram of the antenna 100 in the electronic device 10 is shown. Figure 5 yes Figure 4 The S-parameter simulation results of the antenna 100 in the electronic device 10 are shown. Figure 6 yes Figure 4 The simulation results of system efficiency and radiation efficiency of the antenna 100 in the electronic device 10 are shown.

[0148] like Figure 5 As shown, when Figure 4The antennas shown are Figure 2 and Figure 3 The feeding method shown can generate a linear CM mode and a linear DM mode respectively. The antenna can resonate around 2 GHz in both the linear CM mode and the linear DM mode.

[0149] It should be understood that for the sake of simplicity of discussion, in this embodiment, only the line CM mode and the line DM mode are excited respectively as an example for explanation. Referring to the above embodiment, the line CM mode and the line DM mode can also be excited simultaneously by asymmetric feeding (the feeding point deviates from the middle position of the radiator, including side feeding or offset feeding), or the grounding point of the radiator (the coupling point with the floor) is asymmetric (the grounding point deviates from the middle position of the radiator).

[0150] like Figure 6 As shown, when the first frame (radiator) is symmetrical along the virtual axis of the second side (located at the center of the second side), at the resonance point (2GHz), the radiation efficiency of the CM mode is -4.42dB, the system efficiency is -4.47dB, and the radiation efficiency in the DM mode is -1.27dB, and the system efficiency is -1.39dB.

[0151] It should be understood that when the first frame is located at the center of the second side, the transverse mode can be excited (accounting for more than the longitudinal mode), but the currents corresponding to the transverse mode will cancel each other out, so the system efficiency and radiation efficiency of the CM mode are low.

[0152] As for the DM mode, in the DM mode, the radiation of the antenna is mainly generated by the radiator (the first frame), and when it is set at the center of the second side, the system efficiency and radiation efficiency are better than those in the CM mode.

[0153] Figure 7 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0154] like Figure 7 As shown, the electronic device 10 includes a frame 11 , an antenna 200 and a floor 300 .

[0155] The frame 11 may include a first side 131 and a second side 132 that intersect at an angle, and the length of the first side 131 is greater than the length of the second side 132 .

[0156] The frame 11 may include a first position 201, a second position 202, and a third position 203 which are sequentially arranged. The third position 203 is located at the first side 131. The first position 201 and the second position 202 are located at the second side 132. The frame 11 has a first gap, a second gap, and a third gap respectively at the first position 201, the second position 202, and the third position 203.

[0157] In one embodiment, the width of the gaps provided at the first position 201, the second position 202, and the third position 203 is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The gaps provided in the embodiment of the present application can be within the above range. It should be understood that the width of the gap can be understood as the distance between the ends of the frame on both sides of the gap.

[0158] The antenna 200 includes a first radiator 211 , a second radiator 212 , a first feeding circuit 221 , a second feeding circuit 222 , a first tuning circuit 251 , and a second tuning circuit 252 .

[0159] The first radiator 211 is a conductive part of the frame of the first position 201 and the second position 202. The first end (the end close to the second position 202) and the second end (the end close to the first position 201) of the first radiator 211 are open ends.

[0160] The second radiator 212 is a conductive part of the frame at the second position 202 and the third position 203. The first end (the end close to the third position 203) and the second end (the end close to the second position 202) of the second radiator 212 are open ends.

[0161] The first radiator 211 includes a first feeding point 231, and the second radiator 212 includes a second feeding point 232. The first feeding circuit 221 is coupled to the first feeding point 231. The second feeding circuit 222 is coupled to the second feeding point 232. In one embodiment, the first feeding point 231 and the second feeding point 232 are located at the second side 132.

[0162] It should be understood that, for the sake of simplicity, the present embodiment of the application only takes the electrical connection between the first feeding circuit 221 and the first feeding point 231 as an example for explanation. In actual applications, they can also be connected by indirect coupling, and the present embodiment of the application does not limit this. Moreover, in the present embodiment of the application, the coupling connection can be understood accordingly.

[0163] The first radiator 211 includes a first connection point 2111, and the second radiator 212 includes a second connection point 2121. The first tuning circuit 251 is coupled to the first connection point 2111, and the second tuning circuit 252 is coupled to the second connection point 2121. In one embodiment, the second connection point 2121 is located at the first side 131.

[0164] It should be understood that the first tuning circuit 251 and the second tuning circuit 252 can be used to adjust the resonance point frequencies of the resonances generated by the first radiator 211 and the second radiator 212 respectively, so that the antenna 200 operates in different operating frequency bands.

[0165] It should be understood that according to the technical solution provided in the embodiment of the present application, the first feeding circuit 221 and the second feeding circuit 222 can respectively excite the linear DM mode of the first radiator 211 and the second radiator 212. It can be seen from the above embodiment that when at least part of the first radiator 211 and the second radiator 212 are arranged on the second side 132, the radiation efficiency and system efficiency of the resonance generated by the linear DM mode of the antenna 200 are high. Since the gain of the antenna is related to the directivity and efficiency (radiation efficiency and system efficiency) of the antenna. When the efficiency (radiation efficiency and system efficiency) of the antenna is improved, the directivity remains unchanged and the gain of the antenna can also be improved. Therefore, although the polarization characteristic of the radiation generated by the antenna 200 is linear polarization when the electronic device 10 communicates in the first frequency band or the second frequency band, there will be a 3dB loss when receiving circularly polarized electromagnetic waves, but because the antenna 200 has good efficiency (radiation efficiency and system efficiency), it also has good directivity accordingly.

[0166] In one embodiment, a length D1 of a first portion of the second radiator 212 on the first side 131 and a length D2 of a second portion of the second radiator 212 on the second side 132 satisfy: D2×50%≤D1≤D2×150%.

[0167] It should be understood that Figure 7 In the antenna 200 shown, the connection area between the first part and the second part of the first radiator 211 is in a zigzag shape. Therefore, in this case, the length of the first part can be understood as the length of the conductor between the third position 203 and the connection area, and the length of the second part can be understood as the length between the second position 202 and the connection area. In one embodiment, the connection area between the first part and the second part of the second radiator 212 is in an arc shape. Therefore, in this case, the length of the first part can be understood as the length extending in the extension direction of the first side 131, and the length of the second part can be understood as the length extending in the extension direction of the second side 132.

[0168] It should be understood that when the second radiator 212 is bent and the length of the first portion on the first side 131 and the length of the second portion on the second side 132 are within the above range, the resonance generated by the line DM mode has better radiation efficiency and system efficiency.

[0169] In one embodiment, the first tuning circuit 251 and the second tuning circuit 252 are circuits including switches. The switches can be used to switch electronic components with different resistance values, capacitance values, or inductance values ​​coupled to the connection point in different circuit states. Alternatively, the switches can be in an open state so that the electronic components are not coupled to the connection point. Alternatively, the switches can directly couple the floor 300 to the connection point without an electronic component being disposed between the floor 300 and the connection point.

[0170] In one embodiment, the first tuning circuit 251 and the second tuning circuit 252 do not include switches and may be circuits formed by cascading multiple electronic components. The first tuning circuit 251 and the second tuning circuit 252 may have different equivalent capacitance values ​​or equivalent inductance values ​​at different frequencies.

[0171] It should be understood that the tuning circuits described in the embodiments of the present application can be understood accordingly with reference to the above embodiments, and the embodiments of the present application do not limit the specific structure of the tuning circuits.

[0172] In one embodiment, the first tuning circuit 251 and the second tuning circuit 252 are in a first circuit state, the first feeding circuit 221 and the first radiator 211 are used to generate a first resonance, and the second feeding circuit 222 and the second radiator 212 are used to generate a second resonance. The resonance frequency band of the first resonance includes the first frequency band, and the resonance frequency band of the second resonance includes the second frequency band.

[0173] In one embodiment, the first frequency band may correspond to a transmitting frequency band in satellite communication, and the second frequency band may correspond to a receiving frequency band in satellite communication. Alternatively, in one embodiment, the first frequency band may correspond to a receiving frequency band in satellite communication, and the second frequency band may correspond to a transmitting frequency band in satellite communication.

[0174] For example, in the Tiantong satellite system, the first frequency band may include 1980MHz-2010MHz, and the second frequency band may include 2170MHz-2200MHz. In the Beidou satellite system, the first frequency band may include 1610MHz-1626.5MHz, and the second frequency band may include 2483.5MHz-2500MHz. Alternatively, it may also be applied to other satellite communication systems, and the embodiments of the present application are not limited thereto.

[0175] In one embodiment, at the resonance point of the first resonance, the current on the first radiator 211 is in the same direction. At the resonance point of the second resonance, the current on the second radiator 212 is in the same direction.

[0176] In one embodiment, the length L2 of the frame between the second position 202 and the third position 203 (the length of the second radiator 212 ) and the length L1 of the frame between the first position 201 and the second position 202 (the length of the first radiator 211 ) satisfy: L1×80%≤L2≤L1.

[0177] In one embodiment, the length H1 of the frame between the first connection point 2111 and the second position 202 (or the first position 201) and the length L1 of the frame between the first position 201 and the second position 202 (the length of the first radiator 211) satisfy: H1≤L1×25%. In one embodiment, H1≤L1×15%. In one embodiment, H1 is less than or equal to 8 mm.

[0178] In one embodiment, the length H2 of the frame between the second connection point 2121 and the third position 203 and the length L2 of the frame between the second position 202 and the third position 203 (the length of the second radiator 212) satisfy: H2≤L2×25%. In one embodiment, H2≤L2×15%. In one embodiment, H2 is less than or equal to 5 mm.

[0179] It should be understood that in the embodiments of the present application, the length of the frame (or radiator) between A and B can be understood as the length of the conductor part between A and B. For example, when coupled with A or B through a metal component such as a metal spring, it can be understood as the distance between the center of the end of the metal component connected to A or B.

[0180] It should be understood that the first connection point 2111 and the second connection point 2121 can be set in an area close to the gap, and the first end and the second end of the second radiator 212 and the first radiator 211 are open ends. In the area near the open ends, there is generally a strong electric field, and the area with a strong electric field has better tuning performance.

[0181] In one embodiment, the first position 201 and the second position 202 are symmetrical along the virtual axis of the second side 132, and the lengths of the second sides on both sides of the virtual axis are the same. Due to certain errors in engineering applications, when the ratio of the virtual axis to the distance between the first position 201 and the second position 202 is greater than or equal to 90% and less than or equal to 110%, it can be considered that the second position 202 and the third position 203 are symmetrical along the virtual axis of the second side 132.

[0182] It should be understood that as the symmetry of the first radiator 211 increases, the radiation characteristics of the antenna 200 are improved (eg, bandwidth, radiation efficiency, etc.).

[0183] In one embodiment, the frame 11 further includes a first grounding point 241 and a second grounding point 242. Figure 8 The frame 11 is coupled to the floor 300 at a first grounding point 241 and a second grounding point 242. The first grounding point 241 is located between the first connection point 2111 and the first feeding point 231. The second grounding point 242 is located between the second connection point 2121 and the second feeding point 232.

[0184] It should be understood that when the first radiator 211 and the second radiator 212 include a ground point, the working mode of the first radiator 211 and the second radiator 212 may include a linear CM mode, and the antenna 200 may improve the radiation characteristics of the first frequency band and the second frequency band through the linear CM mode.

[0185] In one embodiment, the first grounding point 241 may be located in the central area of ​​the first radiator 211. The central area of ​​the first radiator 211 may be understood as an area within 5 mm from the center of the first radiator 211, and the central area described in the embodiments of the present application may be understood accordingly.

[0186] In one embodiment, the second ground point 242 may be located at a central area of ​​the second radiator 212 .

[0187] It should be understood that when the first radiator 211 generates the first resonance or the second radiator 212 generates the fourth resonance, it can correspond to the line DM mode. In the line DM mode, the central area includes a large current point, and setting the first grounding point 241 in the area near the large current point will not affect the first resonance or the second grounding point 242 will not affect the second resonance.

[0188] In one embodiment, the distance between the first feeding point 231 and the first position 201 is different from the distance between the first feeding point 231 and the second position 202 , so that the first radiator 211 generates the line CM mode and the line DM mode simultaneously.

[0189] It should be understood that the different distances between the first feeding point 231 and the first position 201 and the second position 202 can be understood as that the absolute value of the difference between the first distance between the first feeding circuit 221 and the first position 201 and the second distance between the first feeding point 231 and the second position 202 is greater than or equal to 5 mm. At the same time, for the sake of simplicity of discussion, the different distances in the embodiments of the present application can be understood accordingly.

[0190] In one embodiment, the distance between the second feeding point 232 and the third position 203 is different from the distance between the second feeding point 232 and the second position 202 , so that the second radiator 212 generates the line CM mode and the line DM mode simultaneously.

[0191] In one embodiment, the antenna 200 may further include a third tuning circuit 253 and a fourth tuning circuit 254. The first radiator 211 may further include a third connection point 2112. The second radiator 212 may further include a fourth connection point 2122. The first grounding point 241 is located between the first connection point 2111 and the third connection point 2112. The second grounding point 242 is located between the second connection point 2121 and the fourth connection point 2122. The third tuning circuit 253 is coupled to the third connection point 2112. The fourth tuning circuit 254 is coupled to the fourth connection point 2122.

[0192] In one embodiment, the length H3 of the frame between the third connection point 2112 and the first position 201 and the length L1 of the frame between the first position 201 and the second position 202 (the length of the first radiator 211) satisfy: H3≤L1×25%. In one embodiment, H3≤L1×15%. In one embodiment, H3 is less than or equal to 8 mm.

[0193] In one embodiment, the length H4 of the frame between the fourth connection point 2122 and the second position 202 and the length L2 of the frame between the second position 202 and the third position 203 (the length of the second radiator 212) satisfy: H4≤L2×25%. In one embodiment, H4≤L2×15%. In one embodiment, H4 is less than or equal to 5 mm.

[0194] In one embodiment, the first tuning circuit 251 and the third tuning circuit 253 are in a first circuit state, the first feeding circuit 221 and the first radiator 211 are used to generate a first resonance and a third resonance, and the resonance point frequency of the third resonance is lower than the resonance point frequency of the first resonance.

[0195] In one embodiment, the second tuning circuit 252 and the fourth tuning circuit 254 are in a first circuit state, the feeding circuit 222 and the second radiator 212 are used to generate a second resonance and a fourth resonance, and the resonance point frequency of the fourth resonance is lower than the resonance point frequency of the second resonance.

[0196] It should be understood that according to the technical solution provided in the embodiment of the present application, the line CM mode and the line DM mode of the radiator can be excited simultaneously by side feeding (for example, the distances between the first feeding point 231 and the first position 201 and the second position 202 are different). In the first circuit state, the first resonance is mainly generated by the line DM mode of the first radiator 211, the third resonance is mainly generated by the line CM mode of the first radiator 211, the second resonance is mainly generated by the line DM mode of the second radiator 212, and the fourth resonance is mainly generated by the line CM mode of the second radiator 212.

[0197] In one embodiment, the frequency difference between the resonance point of the first resonance and the resonance point of the third resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz. In one embodiment, the frequency difference between the resonance point of the second resonance and the resonance point of the fourth resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz.

[0198] It should be understood that the first radiator 211 resonates by the linear CM mode and the linear DM mode. When the frequency difference between the resonance point of the first resonance (second resonance) and the resonance point of the third resonance (fourth resonance) is greater than or equal to 100MHz and less than or equal to 300MHz, the proportion of the linear DM mode in the first resonance (second resonance) can be increased, so that the antenna 200 mainly radiates by the linear DM mode in the resonance frequency band of the first resonance (second resonance), so as to improve the radiation efficiency and system efficiency of the antenna 200 in the first frequency band (second frequency band). When the frequency difference between the resonance point of the first resonance (second resonance) and the resonance point of the third resonance (fourth resonance) is greater than 300MHz, the proportion of other working modes (for example, the linear CM mode) in the first resonance (second resonance) increases, which will cause the radiation efficiency and system efficiency of the antenna 200 in the first frequency band (second frequency band) to decrease.

[0199] In one embodiment, the frequency difference between the resonance point of the fourth resonance and the resonance point of the first resonance is greater than or equal to 200 MHz and less than or equal to 500 MHz (the resonance point frequency of the fourth resonance is higher than the resonance point frequency of the first resonance). Alternatively, in one embodiment, the frequency difference between the resonance point of the third resonance and the resonance point of the second resonance is greater than or equal to 200 MHz and less than or equal to 500 MHz (the resonance point frequency of the third resonance is higher than the resonance point frequency of the second resonance).

[0200] It should be understood that, since the ends of the radiators on both sides of the second position 202 are open ends, when the first feeding circuit 221 (or the second feeding circuit 222) feeds an electrical signal, the coupling between the first radiator 211 and the second radiator 212 is relatively strong. Therefore, the second radiator 212 can be stimulated to generate the fourth resonance (or the third resonance generated by the first radiator 211) by indirect coupling. When the frequency difference between the resonance point of the fourth resonance (third resonance) and the resonance point of the first resonance generated by the first radiator 211 (or the second resonance generated by the second radiator 212) is greater than or equal to 200 MHz and less than or equal to 500 MHz, the radiation efficiency and system efficiency of the antenna 200 in the first frequency band (second frequency band) are well improved.

[0201] In one embodiment, the first feeding point 231 may coincide with the third connection point 2112. In one embodiment, the second feeding point 232 may coincide with the fourth connection point 2122.

[0202] It should be understood that in the embodiment of the present application, the feeding circuit can be coupled to the feeding point through a feeding member (such as a metal spring). When the feeding point coincides with the connection point, both the tuning circuit and the feeding circuit can be coupled to the radiator (feeding point / connection point) through the feeding member, so as to reduce the connection positions on the radiator and facilitate engineering implementation.

[0203] Fig. 9 and Fig.10 yes Figure 8 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig. 9 yes Figure 8 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.10 yes Figure 8 The simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0204] For the sake of brevity, Figure 8 In the antenna 200 shown, an example is given in which the first frequency band is a receiving frequency band (2483.5 MHz-2500 MHz) in the Beidou satellite system and the second frequency band is a transmitting frequency band (1610 MHz-1626.5 MHz) in the Beidou satellite system.

[0205] like Fig. 9 As shown, compared with the quarter-wavelength mode, the second radiator can resonate at about 1.45 GHz (corresponding to the fourth resonance) and about 1.6 GHz (corresponding to the second resonance) through the line CM mode and the line DM mode, respectively.

[0206] It should be understood that the above quarter-wavelength mode can be understood as that the second connection point is directly electrically connected to the floor or electrically connected through a 0 ohm resistor, and radiation is generated only by the conductor portion between the second grounding point and the second position (the first end of the conductor portion is an open end, and the second end is a grounding end). In the quarter-wavelength mode, the current and the electric field are in the same direction on the radiator, and the larger current point is located near the grounding end, and the larger electric field point is located near the open end.

[0207] like Fig.10 As shown, compared with the quarter-wavelength mode, in the second frequency band, when the second radiator resonates through the line CM mode and the line DM mode, the system efficiency is improved by about 1.4 dB.

[0208] Fig.11 and Fig.12 yes Figure 8 The current distribution diagram of the antenna 200 in the electronic device 10 is shown. Fig.11 yes Figure 8 The current distribution diagram corresponding to the antenna 200 in the electronic device 10 working at the first resonance (for example, 2.5 GHz) is shown. Fig.12 yes Figure 8 The current distribution diagram corresponding to the antenna 200 in the electronic device 10 working at the second resonance (eg, 1.62 GHz) is shown.

[0209] like Fig.11As shown, when the antenna generates the first resonance, radiation is mainly generated by the frame (first radiator) between the first position 201 and the second position 202. At the resonance point of the first resonance, the current on the first radiator is in the same direction, which may correspond to the above-mentioned line DM mode.

[0210] like Fig.12 As shown, when the antenna generates the second resonance, radiation is mainly generated by the frame (second radiator) between the second position 202 and the third position 203. At the resonance point of the second resonance, the current on the second radiator is in the same direction, which may correspond to the above-mentioned line DM mode.

[0211] Fig.13 and Fig.14 yes Figure 8 The directional diagram of the antenna 200 in the electronic device 10 in free space (FS) is shown. Fig.13 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 2.5 GHz). Fig.14 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 1.62 GHz).

[0212] It should be understood that for the sake of simplicity, in the present application embodiment, the top direction of the electronic device is taken as the y direction for example. In the directional diagram shown in the present application embodiment, only the directional diagram in the xoz plane is shown, where the horizontal axis is the angle with the x-axis. The ordinate is the angle θ (°) with the z-axis.

[0213] like Fig.13 As shown, when the antenna is fed with an electrical signal from the first feeding point, the maximum radiation direction of the directional pattern generated by the antenna at the first resonance is located at In the area of ​​120°≤θ≤150°. Within the range of ±15° of the maximum radiation direction, the directivity coefficient of right-hand circular polarization (in the Beidou satellite system, the polarization mode of the receiving frequency band (first frequency band) is right-hand circular polarization) is 0dBi.

[0214] like Fig.14 As shown, when the antenna is fed with an electrical signal from the second feeding point, the maximum radiation direction of the directional pattern generated by the antenna at the second resonance is located at In the area of ​​30°≤θ≤150°. Within the range of ±15° of the maximum radiation direction, the directivity coefficient of left-hand circular polarization (in the Beidou satellite system, the polarization mode of the transmission frequency band (the second frequency band) is left-hand circular polarization) is -0.9dBi.

[0215] like Fig.13 and Fig.14As shown, the maximum radiation direction of the antenna in the first resonance and the second resonance is roughly the same (located at θ=120°), which meets the requirement of angular alignment between the transmitting frequency band and the receiving frequency band in satellite communication, and can improve the accuracy of the antenna in transmitting electrical signals.

[0216] Fig.15 and Fig.16 yes Figure 8 The directional pattern of the antenna 200 in the electronic device 10 is shown when the user is holding the device in his left hand (hand left, HL).

[0217] in, Fig.15 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 2.5 GHz). Fig.16 yes Figure 8 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 1.62 GHz).

[0218] like Fig.15 and Fig.16 As shown, when the user holds the electronic device with his left hand, since part of the first radiator and the second radiator are located on the top of the electronic device, the user's holding of the electronic device has little impact on the antenna, and the maximum radiation direction of the directional pattern generated by the antenna at the resonance point of the first resonance and the resonance point of the second resonance is located in approximately the same area. When the user holds the electronic device with his left hand, the maximum radiation direction of the directional pattern generated by the antenna at the first resonance and the second resonance is approximately the same (located at θ=90°), which meets the requirement of angular alignment between the transmitting frequency band and the receiving frequency band in satellite communication, and can improve the accuracy of the antenna in transmitting electrical signals.

[0219] At the first resonance (eg, 2.5 GHz), within the range of ±15° of the maximum radiation direction, the directivity coefficient of right-hand circular polarization (in the BeiDou satellite system, the polarization mode of the receiving frequency band (first frequency band) is right-hand circular polarization) is 0.3 dBi.

[0220] At the second resonance (eg, 1.62 GHz), within the range of ±15° of the maximum radiation direction, the directivity coefficient of left-hand circular polarization (in the BeiDou satellite system, the polarization mode of the transmit frequency band (the second frequency band) is left-hand circular polarization) is -0.7 dBi.

[0221] Fig.17 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0222] like Fig.17As shown, the first connection point 2111 is located between the first connection point 241 and the first position 201, and the third connection point 2112 is located between the first grounding point 241 and the second position 202. The first feeding point 231 is located between the first grounding point 241 and the second position 202.

[0223] It should be understood that Figure 8 In the embodiment shown, the first connection point 2111 is set between the first grounding point 241 and the second position 202 (close to the second position 202) as an example for description. In actual applications, the first connection point 2111 can also be set between the first connection point 241 and the first position 201. Fig.15 Therefore, Fig.17 The antenna 200 is shown with Figure 8 The antenna 200 shown only differs in the positions of the first connection point 2111 , the third connection point 2112 and the first feeding point 231 .

[0224] Fig.18 and Fig.19 yes Fig.17 The directional diagram of the antenna 200 in the electronic device 10 shown in FIG. Fig.18 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 1.62 GHz). Fig.19 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 2.5 GHz).

[0225] It should be understood that for the sake of brevity, Fig.17 In the antenna 200 shown, an example is given in which the first frequency band is a transmitting frequency band (1610 MHz-1626.5 MHz) in the Beidou satellite system and the second frequency band is a receiving frequency band (2483.5 MHz-2500 MHz) in the Beidou satellite system.

[0226] like Fig.18 As shown, when the antenna is fed with an electrical signal from the first feeding point, the maximum radiation direction of the directional pattern generated by the antenna at the first resonance is located at In the area of ​​120°≤θ≤150°. Within the range of ±15° of the maximum radiation direction, the actual gain of left-hand circular polarization (in the Beidou satellite system, the polarization mode of the transmission frequency band (the first frequency band) is left-hand circular polarization) is -6.7dBi.

[0227] like Fig.19 As shown, when the antenna is fed with an electrical signal from the second feeding point, the maximum radiation direction of the directional pattern generated by the antenna at the second resonance is located at In the area of ​​30°≤θ≤150°. In the range of ±15° of the maximum radiation direction, the actual gain of right-hand circular polarization (in the Beidou satellite system, the polarization mode of the receiving frequency band (second frequency band) is right-hand circular polarization) is -5.4dBi.

[0228] like Fig.18 and Fig.19 As shown, the maximum radiation direction of the antenna in the first resonance and the second resonance is roughly the same (located at θ=150°), which meets the requirement of angular alignment between the transmitting frequency band and the receiving frequency band in satellite communication, and can improve the accuracy of the antenna in transmitting electrical signals.

[0229] Fig. 20 and Fig.21 yes Fig.17 The directional diagram of the antenna 200 in the electronic device 10 shown in the figure is held in the left hand of the user. Fig. 20 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to a first resonance (eg, 1.62 GHz). Fig.21 yes Fig.17 The antenna 200 in the electronic device 10 shown operates in a directional pattern corresponding to the second resonance (eg, 2.5 GHz).

[0230] like Fig. 20 and Fig.21 As shown, when the user holds the electronic device with his left hand, since part of the first radiator and the second radiator are located on the top of the electronic device, the user's holding of the electronic device has little impact on the antenna, and the maximum radiation direction of the directional pattern generated by the antenna at the resonance point of the first resonance and the resonance point of the second resonance is located in approximately the same area. When the user holds the electronic device with his left hand, the maximum radiation direction of the directional pattern generated by the antenna at the first resonance and the second resonance is approximately the same (located at θ=100°), which meets the requirement of angular alignment between the transmitting frequency band and the receiving frequency band in satellite communication, and can improve the accuracy of the antenna in transmitting electrical signals.

[0231] At the first resonance (eg, 1.62 GHz), within the range of ±15° of the maximum radiation direction, the actual gain of left-hand circular polarization (in the BeiDou satellite system, the polarization mode of the transmit frequency band (first frequency band) is left-hand circular polarization) is -6.6Bi.

[0232] At the second resonance (eg, 2.5 GHz), within the range of ±15° of the maximum radiation direction, the actual gain of right-hand circular polarization (in the BeiDou satellite system, the polarization mode of the receiving frequency band (the second frequency band) is right-hand circular polarization) is -5.5 dBi.

[0233] Fig. 22It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0234] like Fig. 22 As shown, the frame 11 may include a first position 201, a second position 202 and a third position 203 arranged in sequence. The frame 11 has a first gap, a second gap and a third gap respectively formed at the first position 201, the second position 202 and the third position 203.

[0235] The first radiator 211 is a conductive part of the frame at the first position 201 and the second position 202. The second radiator 212 is a conductive part of the frame at the second position 202 and the third position 203.

[0236] The first radiator 211 includes a first feeding point 231, and the first feeding circuit 221 is coupled to the first feeding point 231. The first radiator 211 includes a first connection point 2111, and the second radiator 212 includes a second connection point 2121. The first tuning circuit 251 is coupled to the second connection point 2121, and the second tuning circuit 252 is coupled to the first connection point 2111.

[0237] It should be understood that compared to Figure 7 The antenna 200 shown, Fig. 22 The antenna 200 shown may include only the first feed point 231. Figure 7 In the antenna 200 shown, the first resonance and the second resonance are generated by means of feeding (the first feeding point set by the first radiator 211 is fed with an electrical signal of the first frequency band to generate the first resonance, and the second feeding point set by the second radiator 212 is fed with an electrical signal of the second frequency band to generate the second resonance).

[0238] And in Fig. 22 In the antenna 200 shown, electrical signals of the first frequency band and the second frequency band are fed into through the first feeding point 231, the first radiator 211 serves as the main radiator, and the second radiator 212 serves as a parasitic branch. The first radiator 211 generates a first resonance, and the second radiator 212 generates a second resonance (parasitic resonance), so that the working frequency band of the antenna 200 includes the first frequency band and the second frequency band.

[0239] In one embodiment, the length of the first radiator 211 between the first feeding point 231 and the second position 202 is less than the length of the first radiator 211 between the first connection point 2111 and the second position 202. In one embodiment, the first feeding point 231 is located at the first end of the first radiator 211 (the end close to the second position 202) to better stimulate the second radiator 212 to generate.

[0240] In one embodiment, the length of the second radiator 212 between the second connection point 2121 and the third position 203 is less than the length of the second radiator 212 between the second connection point 2121 and the second position 202. In one embodiment, the second connection point 2121 is located at the second end of the second radiator 212 (the end close to the third position 203) to better adjust the resonance point frequency of the second resonance generated by the second radiator 212.

[0241] In one embodiment, the first feeding circuit 221 includes a first RF channel 2211 and a second RF channel 2212. The first RF channel 2211 (for feeding an electrical signal of a first frequency band) is used to generate a first resonance, and the second RF channel 2212 (for feeding an electrical signal of a second frequency band) is used to generate a second resonance. The first RF channel 2211 and the second RF channel 2212 can be understood as two different circuits for transmitting electrical signals, for example, they can be understood as two different RF channels in a radio frequency chip (RF IC).

[0242] It should be understood that the embodiment of the present application feeds the electrical signal to the antenna 200 by means of combined feeding, which can reduce the feeding points on the radiator and reduce the complexity of the system design.

[0243] In one embodiment, when the transmitting frequency band and the receiving frequency band in the satellite communication operate in time division duplexing (TDD), the first feeding circuit 221 may further include a switch. The first end of the switch is coupled to the first feeding point 231, the second end is coupled to the first RF channel 2211, and the third end is coupled to the second RF channel 2212. The switch can be used to switch the RF channel coupled to the first feeding point 231 (switch the frequency of the fed electrical signal).

[0244] It should be understood that when the transmitting frequency band and the receiving frequency band operate in TDD, the antenna can generate the first resonance and the second resonance in different time slots through the coupling connection state between the first end and the second end and the third end of the switch.

[0245] At the same time, the switch is connected in series between the first RF channel 2211 and the second RF channel 2212 and the first feeding point 211. The switch can be located at any position of the first feeding circuit 221, for example, close to the first feeding point 211 or away from the first feeding point 211. The embodiments of the present application are only used as illustrative examples and do not limit the specific position of the switch.

[0246] In one embodiment, when the transmitting frequency band and the receiving frequency band in satellite communication operate in frequency division duplexing (FDD), the first feeding circuit 221 may further include a combiner. The first end of the combiner is coupled to the first feeding point 211, the second end is coupled to the first RF channel 2211, and the third end is coupled to the second RF channel 2212.

[0247] It should be understood that when the transmitting frequency band and the receiving frequency band operate in FDD, the first RF channel 2211 and the second RF channel 2212 can be simultaneously fed into the electrical signal antenna 200 through the combiner to simultaneously generate the first resonance and the second resonance.

[0248] In one embodiment, the first feeding point 231 is located at the first radiator 211 , and the resonance point frequency of the first resonance is lower than the resonance point frequency of the second resonance (parasitic resonance).

[0249] In one embodiment, the first feeding point 231 is located at the second radiator 212. In one embodiment, the first feeding point 231 is located at the second side 132. Fig.23 When the first feeding point 231 is located at the second radiator 212, the second radiator serves as the main radiator, the first radiator 211 serves as the parasitic branch, and the first resonance generated by the first radiator 211 is a parasitic resonance.

[0250] In one embodiment, the first feeding point 231 is located at the second radiator 212. The resonance point frequency of the first resonance (parasitic resonance) is higher than the resonance point frequency of the second resonance.

[0251] Fig.24 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0252] like Fig.24 As shown, the frame 11 may include a first position 201, a second position 202, and a third position 203 that are sequentially arranged. The frame 11 has a first gap, a second gap, and a third gap respectively formed in the first position 201, the second position 202, and the third position 203. The frame 11 also includes a first grounding point 241 between the first position 201 and the second position 201. The frame 11 is coupled to the floor 300 at the first grounding point 241.

[0253] The first radiator 211 is a conductive portion of the frame 11 between the first ground point 241 and the second position 202. The second radiator 212 is a conductive portion of the frame 11 between the third position 203 and the second position 202. The first radiator 211 includes a first feeding point 231, and the first feeding circuit 221 is coupled to the first feeding point 231.

[0254] The second radiator 212 includes a second connection point 2121 . The second tuning circuit 252 is coupled to the first connection point 2111 .

[0255] In one embodiment, the first connection point 2111 is directly coupled to the floor 300 , and no electronic components are disposed between the floor 300 and the first connection point 2111 .

[0256] It should be understood that compared to Fig. 22 The antenna 200 shown, Fig.24 The first radiator 211 of the antenna 200 shown is different. Fig. 22 In the antenna 200 shown, the first radiator 211 is a conductive portion of the frame 11 between the first position 201 and the second position 202. The first end and the second end of the first radiator 211 are open ends, and the first end and the second end of the second radiator 212 are open ends. The first radiator 211 and the second radiator 212 can both operate in a half-wavelength mode of a linear DM mode. The current and electric field distribution thereof can be seen in FIG. Figure 3 shown.

[0257] And in Fig.24 In the antenna 200 shown, the first radiator 211 is a conductive portion of the frame 11 between the first ground point 241 and the second position 202. The first end of the first radiator 211 is a ground end, and the second end is an open end, and can work in a quarter-wavelength mode. The first end and the second end of the second radiator 212 are open ends, and can work in a half-wavelength mode of the line DM mode.

[0258] exist Fig.24 In the antenna 200 shown, electrical signals of the first frequency band and the second frequency band are fed into through the first feeding point 231, the first radiator 211 serves as the main radiator, and the second radiator 212 serves as a parasitic branch. The first radiator 211 generates a first resonance, and the second radiator 212 generates a second resonance (parasitic resonance), so that the working frequency band of the antenna 200 includes the first frequency band and the second frequency band.

[0259] In one embodiment, the length of the first radiator 211 between the first feeding point 231 and the second position 202 is greater than the length of the first radiator 211 between the first feeding point and the first ground point 241 .

[0260] It should be understood that the first radiator 211 may form a left-hand antenna structure, and the left-hand antenna may be, for example, an antenna conforming to a composite right and left hand (CRLH) transmission line structure.

[0261] In one embodiment, the first feeding point 231 is located at the first radiator 211 , and the resonance point frequency of the first resonance is lower than the resonance point frequency of the second resonance (parasitic resonance).

[0262] In one embodiment, the first feeding point 231 may also be located at the second radiator 212, and the first feeding circuit 221 is coupled to the first feeding point 231. Fig.25 The first radiator 211 is the conductive part of the frame at the first position 201 and the second position 202. The second radiator 212 is the conductive part of the frame 11 between the second ground point 242 and the second position 202.

[0263] In one embodiment, the second connection point 2121 is directly coupled to the floor 300 , and no electronic components are disposed between the floor 300 and the second connection point 2121 . In one embodiment, the first feeding point 231 is located at the second side 132 .

[0264] It should be understood that when the first feeding point 231 is located at the second radiator 212, the second radiator 212 acts as a main radiator and can operate in a quarter-wavelength mode, and the first radiator 211 acts as a parasitic branch. The first resonance generated by the first radiator 211 is a parasitic resonance and can operate in a half-wavelength mode of the linear DM mode.

[0265] In one embodiment, the first feeding point 231 is located at the second radiator 212. The resonance point frequency of the first resonance (parasitic resonance) is higher than the resonance point frequency of the second resonance.

[0266] Fig.26 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0267] like Fig.26 As shown, the frame 11 may include a first side 131, a second side 132 and a third side 133. The first side 131 and the third side 133 intersect the second side 132 at an angle. The length of the first side 131 is greater than the length of the second side 132. The length of the third side 133 is greater than the length of the second side 132.

[0268] The frame 11 can be at a first position 201, a second position 202, a third position 203 and a fourth position 204. The third position 203 is located at the first side 131, and the fourth position 204 is located at the third side 133. The first position 201 and the second position 202 are located at the second side 132, and the first position 201 is located between the second position 202 and the fourth position 203. The frame 11 has a first slit, a second slit, a third slit and a fourth slit respectively at the first position 201, the second position 202, the third position 203 and the fourth position 204.

[0269] The first radiator 211 is a conductive part of the frame at the first position 201 and the fourth position 204. The first end (the end close to the second position 202) and the second end (the end close to the fourth position 204) of the first radiator 211 are open ends.

[0270] The second radiator 212 is a conductive part of the frame at the second position 202 and the third position 203. The first end (the end close to the third position 203) and the second end (the end close to the second position 202) of the second radiator 212 are open ends.

[0271] The first radiator 211 includes a first feeding point 231, and the second radiator 212 includes a second feeding point 232. The first feeding circuit 221 is coupled to the first feeding point 231. The second feeding circuit 222 is coupled to the second feeding point 232. In one embodiment, the first feeding point 231 and the second feeding point 232 are located at the second side 132.

[0272] The first radiator 211 includes a fifth connection point 2113, and the second radiator 212 includes a second connection point 2121. The fifth tuning circuit 255 is coupled to the fifth connection point 2113, and the second tuning circuit 252 is coupled to the second connection point 2121. In one embodiment, the second connection point 2121 is located at the first side 131. In one embodiment, the fifth connection point 2113 is located at the third side 133.

[0273] It should be understood that the fifth tuning circuit 255 and the second tuning circuit 252 can be used to adjust the resonance point frequencies of the resonances generated by the first radiator 211 and the second radiator 212 respectively, so that the antenna 200 operates in different operating frequency bands.

[0274] It should be understood that compared to Figure 7 The antenna 200 shown, Fig.26 The difference of the antenna 200 shown is that the positions of the first radiator 211 and the second radiator 212 are different.

[0275] exist Figure 7 In the antenna 200 shown, the first radiator 211 and the second radiator 212 are arranged adjacent to each other, and the first end of the first radiator 211 (the end close to the second position 202) and the second end of the second radiator 212 (the end close to the second position 202) are opposite to each other and do not contact each other. Fig.26 In the antenna 200 shown, the first radiator 211 and the second radiator 212 are arranged at an interval.

[0276] In one embodiment, a length D1 of a first portion of the second radiator 212 on the first side 131 and a length D2 of a second portion of the second radiator 212 on the second side 132 satisfy: D2×50%≤D1≤D2×150%.

[0277] In one embodiment, a length D3 of the third portion of the first radiator 211 on the third side 133 and a length D4 of the fourth portion of the first radiator 211 on the second side 132 satisfy: D4×50%≤D3≤D4×150%.

[0278] In one embodiment, the fifth tuning circuit 255 and the second tuning circuit 252 are in a first circuit state, the first feeding circuit 221 and the first radiator 211 are used to generate a first resonance, and the second feeding circuit 222 and the second radiator 212 are used to generate a second resonance. The resonance frequency band of the first resonance includes the first frequency band, and the resonance frequency band of the second resonance includes the second frequency band.

[0279] In one embodiment, at the resonance point of the first resonance, the current on the first radiator 211 is in the same direction. At the resonance point of the second resonance, the current on the second radiator 212 is in the same direction.

[0280] In one embodiment, the length L2 of the frame between the second position 202 and the third position 203 (the length of the second radiator 212 ) and the length L3 of the frame between the first position 201 and the fourth position 204 (the length of the first radiator 211 ) satisfy: L3×70%≤L2≤L3.

[0281] In one embodiment, the length H5 of the frame between the fifth connection point 2115 and the fourth position 204 and the length L3 of the frame between the first position 201 and the fourth position 204 (the length of the first radiator 211) satisfy: H5≤L3×25%. In one embodiment, H5≤L3×15%. In one embodiment, H5 is less than or equal to 5 mm.

[0282] In one embodiment, the length H2 of the frame between the second connection point 2121 and the third position 203 and the length L2 of the frame between the second position 202 and the third position 203 (the length of the second radiator 212) satisfy: H2≤L2×25%. In one embodiment, H2≤L2×15%. In one embodiment, H2 is less than or equal to 5 mm.

[0283] In one embodiment, the frame 11 further includes a third grounding point 243 and a second grounding point 242. The frame 11 is coupled to the floor 300 at the third grounding point 243 and the second grounding point 242. The third grounding point 243 is located between the first connection point 2111 and the first feeding point 231. The second grounding point 242 is located between the second connection point 2121 and the second feeding point 232.

[0284] It should be understood that when the first radiator 211 and the second radiator 212 include a ground point, the working mode of the first radiator 211 and the second radiator 212 may include a linear CM mode, and the antenna 200 may improve the radiation characteristics of the first frequency band and the second frequency band through the linear CM mode.

[0285] In one embodiment, the third grounding point 243 may be located in a central area of ​​the first radiator 211. In one embodiment, the second grounding point 242 may be located in a central area of ​​the second radiator 212.

[0286] It should be understood that when the first radiator 211 generates the first resonance or the second radiator 212 generates the fourth resonance, it can correspond to the line DM mode. In the line DM mode, the central area includes a large current point, and setting the first grounding point 241 in the area near the large current point will not affect the first resonance or the second grounding point 242 will not affect the second resonance.

[0287] In one embodiment, the distance between the first feeding point 231 and the first position 201 is different from the distance between the first feeding point 231 and the fourth position 204 , so that the first radiator 211 generates the line CM mode and the line DM mode simultaneously.

[0288] In one embodiment, the distance between the second feeding point 232 and the third position 203 is different from the distance between the second feeding point 232 and the second position 202 , so that the second radiator 212 generates the line CM mode and the line DM mode simultaneously.

[0289] In one embodiment, the antenna 200 may further include a sixth tuning circuit 256 and a fourth tuning circuit 254. The first radiator 211 may further include a sixth connection point 2114. The second radiator 212 may further include a fourth connection point 2122. The third grounding point 243 is located between the first connection point 2111 and the sixth connection point 2114. The second grounding point 242 is located between the second connection point 2121 and the fourth connection point 2122. The sixth tuning circuit 256 is coupled to the sixth connection point 2114. The fourth tuning circuit 254 is coupled to the fourth connection point 2122.

[0290] In one embodiment, the length H6 of the frame between the sixth connection point 2114 and the first position 204 and the length L3 of the frame between the first position 201 and the fourth position 204 (the length of the first radiator 211) satisfy: H6≤L3×25%. In one embodiment, H6≤L3×15%. In one embodiment, H6 is less than or equal to 5 mm.

[0291] In one embodiment, the length H4 of the frame between the fourth connection point 2122 and the second position 202 and the length L2 of the frame between the second position 202 and the third position 203 (the length of the second radiator 212) satisfy: H4≤L2×25%. In one embodiment, H4≤L2×15%. In one embodiment, H4 is less than or equal to 5 mm.

[0292] In one embodiment, the fifth tuning circuit 255 and the sixth tuning circuit 256 are in a first circuit state, the first radiator 211 is used to generate a first resonance and a third resonance, and the resonance point frequency of the third resonance is lower than the resonance point frequency of the first resonance.

[0293] In one embodiment, the second tuning circuit 252 and the fourth tuning circuit 254 are in a first circuit state, the second radiator 212 is used to generate a second resonance and a fourth resonance, and the resonance point frequency of the fourth resonance is lower than the resonance point frequency of the second resonance.

[0294] It should be understood that according to the technical solution provided in the embodiment of the present application, the line CM mode and the line DM mode of the radiator can be excited simultaneously by side feeding. In the first circuit state, the first resonance is mainly generated by the line DM mode of the first radiator 211, the third resonance is mainly generated by the line CM mode of the first radiator 211, the second resonance is mainly generated by the line DM mode of the second radiator 212, and the fourth resonance is mainly generated by the line CM mode of the second radiator 212.

[0295] In one embodiment, the frequency difference between the resonance point of the first resonance and the resonance point of the third resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz. In one embodiment, the frequency difference between the resonance point of the second resonance and the resonance point of the fourth resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz.

[0296] It should be understood that the first radiator 211 resonates by the linear CM mode and the linear DM mode. When the frequency difference between the resonance point of the first resonance (second resonance) and the resonance point of the third resonance (fourth resonance) is greater than or equal to 100MHz and less than or equal to 300MHz, the proportion of the linear DM mode in the first resonance (second resonance) can be increased, so that the antenna 200 mainly radiates by the linear DM mode in the resonance frequency band of the first resonance (second resonance), so as to improve the radiation efficiency and system efficiency of the antenna 200 in the first frequency band (second frequency band). When the frequency difference between the resonance point of the first resonance (second resonance) and the resonance point of the third resonance (fourth resonance) is greater than 300MHz, the proportion of other working modes (for example, the linear CM mode) in the first resonance (second resonance) increases, which will cause the radiation efficiency and system efficiency of the antenna 200 in the first frequency band (second frequency band) to decrease.

[0297] Fig. 27 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0298] It should be understood that since satellite communication and cellular communication (or short-range communication) are not performed simultaneously. In the above embodiment, it is shown that when the electronic device 10 performs satellite communication, the first radiator and the second radiator can generate the first resonance and the second resonance, so that the antenna can have good radiation characteristics in the first frequency band and the second frequency band. When the electronic device 10 does not perform satellite communication, the first radiator 211 and the second radiator 212 can be reused as radiators of the antenna for cellular communication (or short-range communication).

[0299] Under the same structure of the frame 11, in the above embodiment, the conductor part of the frame between the first position 201 and the second position 202 (or the first position 201 and the fourth position 204), and the conductor part of the frame between the second position 202 and the third position 203 are used as radiators. Fig. 27 In the antenna 200 shown, the conductor portion of the frame between the slot and the ground point is used as a radiator.

[0300] The structure of the same frame 11 can be understood as follows: the frame 11 can have gaps at the first position 201, the second position 202, the third position 203 and the fourth position 204, and is coupled to the floor 300 at the first grounding point 241, the second grounding point 242 and the third grounding point 243. The structure of the same frame 11 can also be understood as follows: the length ratios of the frames at the first position 201, the second position 202, the third position 203 and the fourth position 204 are the same.

[0301] like Fig. 27 As shown, the conductor portion of the frame between the first ground point 241 and the second position 202 can be used as a radiator 301. The radiator 301 and the feeding circuit 311 form a first antenna. In one embodiment, the feeding circuit 311 can be the first feeding circuit 221 in the above embodiment. In one embodiment, the third tuning circuit 253 in the above embodiment can be used to adjust the resonance point frequency of the resonance generated by the first antenna.

[0302] In one embodiment, the conductor portion of the frame between the second position 202 and the second ground point 242 can be used as a radiator 302. The radiator 302 and the feeding circuit 312 form a second antenna. In one embodiment, the feeding circuit 312 can be the second feeding circuit 222 in the above embodiment. In one embodiment, the fourth tuning circuit 254 in the above embodiment can be used to adjust the resonance point frequency of the resonance generated by the second antenna.

[0303] In one embodiment, the conductor portion of the frame between the third position 203 and the second ground point 242 can be used as a radiator 303. The radiator 303 and the feeding circuit 313 form a third antenna. In one embodiment, the second tuning circuit 252 in the above embodiment can be used to adjust the resonance point frequency of the resonance generated by the third antenna.

[0304] In one embodiment, the conductor portion of the frame between the first position 201 and the third ground point 243 can be used as a radiator 304. The radiator 304 and the feeding circuit 314 form a fourth antenna. In one embodiment, the sixth tuning circuit 256 in the above embodiment can be used to adjust the resonance point frequency of the resonance generated by the fourth antenna.

[0305] In one embodiment, the conductor portion of the frame between the fourth position 204 and the third ground point 243 can be used as a radiator 305. The radiator 305 and the feeding circuit 315 form a fifth antenna. In one embodiment, the fifth tuning circuit 255 in the above embodiment can be used to adjust the resonance point frequency of the resonance generated by the fifth antenna.

[0306] It should be understood that one end of the radiator 301, radiator 302, radiator 303, radiator 304 and radiator 305 described in the embodiment of the present application is a ground end and the other end is an open end, and the first antenna, the second antenna, the third antenna, the fourth antenna and the fifth antenna can all operate in a quarter-wavelength mode.

[0307] In one embodiment, the operating frequency band of the first antenna may include 2.4 GHz of WiFi, and / or at least part of the frequency band in sub 6G, for example, the n77 frequency band.

[0308] In one embodiment, the operating frequency band of the second antenna may include the L1 frequency band in GPS, and / or at least part of the frequency band in sub 6G, for example, the n79 frequency band.

[0309] In one embodiment, the operating frequency band of the third antenna may include at least part of the frequency band in the middle band (MB) (1710MHz-2170MHz), and / or, at least part of the frequency band in the high band (HB) (2300MHz-2690MHz), for example, B1 (1920MHz-1980MHz), B3 (1710MHz-1785MHz) and B7 (2500MHz-2570MHz) in LTE.

[0310] In one embodiment, the operating frequency band of the fourth antenna may include at least part of the frequency band in the intermediate frequency, and / or at least part of the frequency band in the high frequency, for example, B1 (1920MHz-1980MHz), B3 (1710MHz-1785MHz) and B7 (2500MHz-2570MHz) in LTE.

[0311] In one embodiment, the operating frequency band of the fifth antenna may include at least part of the frequency band in the intermediate frequency, and / or, at least part of the frequency band in the high frequency, for example, B1 (1920MHz-1980MHz), B3 (1710MHz-1785MHz) and B7 (2500MHz-2570MHz) in LTE.

[0312] It should be understood that in the above embodiment, only the allocation of the working frequency bands of some antennas is shown. In actual production or design, the working frequency bands of the above antennas can also be adjusted. In one embodiment, the working frequency band of the third antenna may include at least part of the low band (LB), for example, B5, B8 and B28 in LTE.

[0313] In one embodiment, grounding can be achieved at the first grounding point 241 through a first grounding member 321 (eg, a metal spring). Fig.28 The width of the connection between the first grounding piece 331 and the frame is greater than or equal to 2 mm and less than or equal to 8 mm.

[0314] It should be understood that providing a grounding structure at the first grounding point 241 can provide better isolation between the first antenna and the fourth antenna. As the width of the connection between the first grounding member 311 and the frame increases, the isolation between the first antenna and the fourth antenna increases.

[0315] In one embodiment, the frame 11 is directly electrically connected to the floor 300 at the first connection point 2111 or is electrically connected via a 0 ohm resistor, which can further improve the isolation between the first antenna and the fourth antenna.

[0316] In one embodiment, grounding can be achieved at the second grounding point 242 through a second grounding member 322 (eg, a metal spring). The width of the second grounding member 332 connected to the frame is greater than or equal to 2 mm and less than or equal to 12 mm.

[0317] It should be understood that providing a grounding structure at the second grounding point 242 can provide better isolation between the second antenna and the third antenna. As the width of the second grounding member 332 connected to the frame increases, the isolation between the second antenna and the third antenna increases.

[0318] In one embodiment, grounding can be achieved at the third grounding point 243 through a third grounding member 323 (eg, a metal spring). The width of the third grounding member 333 connected to the frame is greater than or equal to 1 mm and less than or equal to 20 mm.

[0319] It should be understood that the grounding structure at the third grounding point 243 can provide better isolation between the fourth antenna and the fifth antenna. As the width of the connection between the third grounding member 333 and the frame increases, the isolation between the fourth antenna and the fifth antenna increases.

[0320] In one embodiment, the length R1 of the radiator 301 (the length of the frame between the second position 202 and the first ground point 241 ) and the length L1 of the frame between the first position 201 and the second position 202 satisfy: L1×35%≤R2≤L1×60%.

[0321] In one embodiment, the length R2 of the radiator 302 (the length of the frame between the second position 202 and the second ground point 242 ) and the length L1 of the frame between the first position 201 and the second position 202 satisfy: L1×35%≤R2≤L1×60%.

[0322] In one embodiment, the length R3 of the radiator 303 (the length of the frame between the third position 203 and the second ground point 242 ) and the length L1 of the frame between the first position 201 and the second position 202 satisfy: L1×30%≤R3≤L1×55%.

[0323] In one embodiment, the length R4 of the radiator 304 (the length of the frame between the first position 201 and the third ground point 243 ) and the length L1 of the frame between the first position 201 and the second position 202 satisfy: L1×40%≤R4≤L1×65%.

[0324] In one embodiment, the length R5 of the radiator 305 (the length of the frame between the fourth position 204 and the third ground point 243 ) and the length L1 of the frame between the first position 201 and the second position 202 satisfy: L1×40%≤R4≤L1×65%.

[0325] 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: The frame comprises a first position, a second position and a third position which are arranged in sequence, wherein the frame has a first gap, a second gap and a third gap respectively formed at the first position, the second position and the third position. The frame further includes a first side and a second side intersecting at an angle, the length of the first side is greater than the length of the second side, the first position and the second position are located on the second side, and the third position is located on the first side; Antenna, including: a first radiator and a second radiator, wherein the first radiator is a conductive portion of the frame between the first position and the second position, and the second radiator is a conductive portion of the frame between the second position and the third position, a first feeding circuit, the first radiator or the second radiator comprises a first feeding point, the first feeding point is located at the second side, the first feeding circuit is coupled to the first feeding point, A first tuning circuit and a second tuning circuit, the first radiator includes a first connection point, the second radiator includes a second connection point, the first tuning circuit is coupled to the second connection point, and the second tuning circuit is coupled to the first connection point.

2. The electronic device according to claim 1, characterized in that: The length of the first part is greater than or equal to one half of the length of the second part, and less than or equal to two thirds of the length of the second part. The first part is the part of the second radiator on the first side, and the second part is the part of the second radiator on the second side.

3. The electronic device according to claim 1 or 2, characterized in that: The first tuning circuit is in a first circuit state, the first radiator is used to generate a first resonance, and the resonance frequency band of the first resonance includes a first frequency band; The second tuning circuit is in the first circuit state, the second radiator is used to generate a second resonance, and the resonance frequency band of the second resonance includes a second frequency band.

4. The electronic device according to any one of claims 1 to 3, characterized in that: The first feeding circuit includes a first radio frequency channel and a second radio frequency channel. The first radio frequency channel is used to feed signals in the first frequency band, and the second radio frequency channel is used to feed signals in the second frequency band.

5. The electronic device according to any one of claims 1 to 3, characterized in that: The antenna further includes a second feeding circuit; The first radiator includes the first feeding point, the second radiator includes a second feeding point, the second feeding point is located at the second side, and the second feeding circuit is coupled to the second feeding point.

6. The electronic device according to any one of claims 1 to 5, characterized in that: At the resonance point of the first resonance, the currents on the first radiator are in the same direction; At the resonance point of the second resonance, the currents on the second radiator are in the same direction.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The electronic device also includes a floor; The frame also includes a first grounding point and a second grounding point, and the frame is coupled to the floor at the first grounding point and the second grounding point, the first grounding point is located between the first feeding point and the first connection point, and the second grounding point is located between the second feeding point and the second connection point.

8. The electronic device according to claim 7, characterized in that: The antenna also includes a third tuning circuit and a fourth tuning circuit; The first radiator includes a third connection point, the second radiator includes a fourth connection point, the first grounding point is located between the first connection point and the third connection point, the second grounding point is located between the second connection point and the fourth connection point, the third tuning circuit is coupled to the third connection point, and the fourth tuning circuit is coupled to the fourth connection point.

9. The electronic device according to claim 8, characterized in that: The first tuning circuit and the third tuning circuit are in a first circuit state, the first radiator is used to generate a first resonance and a third resonance, and a resonance point frequency of the third resonance is lower than a resonance point frequency of the first resonance; The second tuning circuit and the fourth tuning circuit are in the first circuit state, the second radiator is used to generate a second resonance and a fourth resonance, and the resonance point frequency of the fourth resonance is lower than the resonance point frequency of the second resonance.

10. The electronic device according to claim 9, characterized in that: The frequency difference between the resonance point of the first resonance and the resonance point of the third resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz, and / or, A frequency difference between a resonance point of the second resonance and a resonance point of the fourth resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz.

11. The electronic device according to claim 9, characterized in that: A frequency difference between a resonance point of the third resonance and a resonance point of the second resonance is greater than or equal to 200 MHz and less than or equal to 500 MHz.

12. The electronic device according to any one of claims 7 to 11, characterized in that: The electronic device further comprises a first grounding member, and the frame is coupled to the floor at the first grounding point through the first grounding member; The width of the connection between the first grounding piece and the frame is greater than or equal to 2 mm and less than or equal to 8 mm.

13. The electronic device according to any one of claims 7 to 12, characterized in that: The electronic device further comprises a second grounding member, and the frame is coupled to the floor at the second grounding point through the second grounding member; The width of the connection between the second grounding piece and the frame is greater than or equal to 2 mm and less than or equal to 12 mm.

14. An electronic device, characterized in that: include: A frame includes a first position, a second position, a third position and a fourth position which are arranged in sequence, wherein the frame has a first slit, a second slit, a third slit and a fourth slit respectively formed at the first position, the second position, the third position and the fourth position. The frame further includes a first side, a second side and a third side, wherein the first side, the third side and the second side intersect at an angle. The length of the first side is greater than the length of the second side, the length of the third side is greater than the length of the second side, the first position and the second position are located on the second side, the third position is located on the first side, and the fourth position is located on the third side; Antenna, including: a first radiator and a second radiator, wherein the first radiator is a conductive portion of the frame between the first position and the fourth position, and the second radiator is a conductive portion of the frame between the second position and the third position, a first feeding circuit and a second feeding circuit, the first radiator includes a first feeding point, the second radiator includes a second feeding point, the first feeding point and the second feeding point are located on the second side, the first feeding circuit is coupled to the first feeding point, and the second feeding circuit is coupled to the second feeding point, A first tuning circuit and a second tuning circuit, the first radiator includes a first connection point, the second radiator includes a second connection point, the first tuning circuit is coupled to the second connection point, and the second tuning circuit is coupled to the first connection point.

15. The electronic device according to claim 14, characterized in that: The length of the first portion is greater than or equal to one half of the length of the second portion, and less than or equal to three half of the length of the second portion, the first portion is the portion of the first radiator on the first side, the second portion is the portion of the first radiator on the second side, and / or, The length of the third part is greater than or equal to one half of the length of the fourth part, and less than or equal to three halfs of the length of the fourth part. The third part is the part of the second radiator on the third side, and the fourth part is the part of the second radiator on the second side.

16. The electronic device according to claim 14 or 15, characterized in that: The first tuning circuit is in a first circuit state, the first radiator is used to generate a first resonance, and the resonance frequency band of the first resonance includes a first frequency band; The second tuning circuit is in the first circuit state, the second radiator is used to generate a second resonance, and the resonance frequency band of the second resonance includes a second frequency band.

17. The electronic device according to claim 16, characterized in that: At the resonance point of the first resonance, the currents on the first radiator are in the same direction; At the resonance point of the second resonance, the currents on the second radiator are in the same direction.

18. The electronic device according to any one of claims 14 to 17, characterized in that: The electronic device also includes a floor; The frame also includes a first grounding point and a second grounding point, and the frame is coupled to the floor at the first grounding point and the second grounding point, the first grounding point is located between the first feeding point and the first connection point, and the second grounding point is located between the second feeding point and the second connection point.

19. The electronic device according to claim 18, characterized in that: The antenna also includes a third tuning circuit and a fourth tuning circuit; The first radiator includes a third connection point, the second radiator includes a fourth connection point, the first grounding point is located between the first connection point and the third connection point, the second grounding point is located between the second connection point and the fourth connection point, the third tuning circuit is coupled to the third connection point, and the fourth tuning circuit is coupled to the fourth connection point.

20. The electronic device according to claim 19, characterized in that The first tuning circuit and the third tuning circuit are in a first circuit state, the first radiator is used to generate a first resonance and a third resonance, and a resonance point frequency of the third resonance is lower than a resonance point frequency of the first resonance; The second tuning circuit and the fourth tuning circuit are in the first circuit state, the second radiator is used to generate a second resonance and a fourth resonance, and the resonance point frequency of the fourth resonance is lower than the resonance point frequency of the second resonance.

21. The electronic device according to claim 20, characterized in that: The frequency difference between the resonance point of the first resonance and the resonance point of the third resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz, and / or, A frequency difference between a resonance point of the second resonance and a resonance point of the fourth resonance is greater than or equal to 100 MHz and less than or equal to 300 MHz.

22. The electronic device according to any one of claims 19 to 21, characterized in that: The electronic device further comprises a first grounding member, and the frame is coupled to the floor at the first grounding point through the first grounding member; The width of the connection between the first grounding piece and the frame is greater than or equal to 2 mm and less than or equal to 12 mm.

23. The electronic device according to any one of claims 19 to 22, characterized in that: The electronic device further comprises a second grounding member, and the frame is coupled to the floor at the second grounding point through the second grounding member; The width of the connection between the second grounding piece and the frame is greater than or equal to 1 mm and less than or equal to 20 mm.

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