WO2022048512A1 - 天线结构和电子设备 - Google Patents

天线结构和电子设备 Download PDF

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Publication number
WO2022048512A1
WO2022048512A1 PCT/CN2021/115320 CN2021115320W WO2022048512A1 WO 2022048512 A1 WO2022048512 A1 WO 2022048512A1 CN 2021115320 W CN2021115320 W CN 2021115320W WO 2022048512 A1 WO2022048512 A1 WO 2022048512A1
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WIPO (PCT)
Prior art keywords
port
radiator
antenna
electronic device
gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/115320
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English (en)
French (fr)
Inventor
王珅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to EP21863577.9A priority Critical patent/EP4210169A4/en
Publication of WO2022048512A1 publication Critical patent/WO2022048512A1/zh
Anticipated expiration legal-status Critical
Priority to US18/118,117 priority patent/US12261374B2/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2682—Time delay steered arrays
    • H01Q3/2694—Time delay steered arrays using also variable phase-shifters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/35—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present application belongs to the field of communication technologies, and in particular relates to an antenna structure and an electronic device.
  • MIMO Multi-Input Multi-Output
  • the purpose of the embodiments of the present application is to provide an antenna structure and an electronic device, which can solve the problem of increasing the volume of the electronic device caused by the multi-antenna communication system.
  • an embodiment of the present application provides an antenna structure, including: a first antenna and a second antenna, wherein the first antenna includes a first radiator, a second radiator, a first port, and a second port, so the second antenna includes a third radiator and a third port;
  • the first radiator, the second radiator and the third radiator together form an annular structure, and there is a first gap between the first radiator and the second radiator, and the first radiator and the second radiator have a first gap.
  • a second gap is provided between a radiator and the third radiator, and a third gap is provided between the second radiator and the third radiator;
  • the first port is connected to the first end of the first radiator close to the first gap
  • the second port is connected to the first end of the second radiator close to the first gap
  • the feed signal transmitted through the first port is in reverse phase with the feed signal transmitted through the second port
  • the third port is connected to the middle area of the third radiator
  • the first radiator The second radiator and the second radiator are respectively located on opposite sides of a first axis of symmetry that intersects the intermediate region.
  • an embodiment of the present application provides an electronic device, including the antenna structure of the first aspect.
  • the radiators of the first antenna and the second antenna together form a ring structure, there is a gap between any two radiators, and the third radiator is symmetrical along the first axis of symmetry, and the first radiator The body and the second radiator are located on opposite sides of the first axis of symmetry, respectively.
  • two current modes with orthogonal polarizations can be fed and excited on the same ring structure, so as to improve the isolation between the port of the first antenna and the port of the second antenna, so that the first antenna and the
  • the radiators of the second antenna can be arranged on the same annular structure, thereby avoiding the need to arrange radiators at different positions for the first antenna and the second antenna, thereby reducing the space occupied by the first antenna and the second antenna , so that the space for installing the antenna on the electronic device can be reduced, and the effect of reducing the volume of the electronic device can be achieved.
  • FIG. 1 is a schematic diagram of an antenna structure provided by an embodiment of the present application.
  • FIG. 2 is one of feeding circuit diagrams in an antenna structure provided by an embodiment of the present application.
  • FIG. 3 is a second diagram of a feeding circuit in an antenna structure provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a current direction in an antenna structure provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of the isolation degree of an antenna structure provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another antenna structure provided by an embodiment of the present application.
  • FIG. 7 is a diagram of a feeding circuit in another antenna structure provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the radiation efficiency of another antenna structure provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another electronic device provided by an embodiment of the present application.
  • Fig. 11 is one of the structural schematic diagrams of the antenna structure and the non-metal housing in a kind of electronic device provided by the embodiment of the present application;
  • FIG. 12 is a second schematic structural diagram of an antenna structure and a non-metal casing in an electronic device provided by an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between “first”, “second”, etc.
  • the objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or more than one.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • the antenna structure provided by the embodiments of the present application can reduce the separation distance between the two antennas and at the same time improve the isolation between the two antennas, thereby avoiding mutual crosstalk between uncorrelated coded signals and reducing the two antennas.
  • the coupling strength between the two antennas can avoid the problem that the external data throughput of the multi-antenna system is reduced due to the strong coupling between the two antennas, and the transmission rate of the multi-antenna system is slowed down, so that the overall antenna of the multi-antenna system can be improved. performance.
  • the above-mentioned multi-antenna system can be a radio frequency antenna system, for example: a 2 x 2 multi-input multi-output (Multi-Input Multi-Output, MIMO) communication system, which can also be a short-range communication system such as Bluetooth, which is not specifically described here.
  • MIMO Multi-Input Multi-Output
  • the antenna structure provided by the embodiments of the present application can support the high-speed dual-Bluetooth antenna communication technology that requires extremely high isolation between the antennas.
  • FIG. 1 is a schematic diagram of an antenna structure provided by an embodiment of the present application
  • FIG. 2 is a feeding circuit diagram of an antenna structure provided by an embodiment of the present application.
  • the antenna structure includes a first antenna 10 and a second antenna 20, wherein the first antenna 10 includes a first radiator 101, a second radiator 102, a first port 103 and a second port 104, and the second
  • the antenna 20 includes a third radiator 201 and a third port 202 .
  • the first radiator 101 , the second radiator 102 and the third radiator 201 together form an annular structure, and there is a first gap 31 between the first radiator 101 and the second radiator 102 , and the first radiator 101 There is a second gap 32 between the third radiator 201 and the second radiator 103 and a third gap 33 between the second radiator 103 and the third radiator 201 .
  • the first port 103 is connected to the first end of the first radiator 101 close to the first gap 31
  • the second port 104 is connected to the first end of the second radiator 102 close to the first gap 31
  • the third port 202 is connected to the position on the first symmetry axis A of the third radiator 201.
  • the first radiator 101 and the second radiator 102 are distributed on opposite sides of the first axis of symmetry A.
  • first port 103, second port 104 and third port 202 are connection components between the antenna feeder line and the radiator, which may specifically be: elastic sheet, conductive foam, conductor line, electromagnetic coupling Contact or non-contact RF signal connection methods are not exhaustive here.
  • first port 103 , the second port 104 and the third port 202 can be connected to the corresponding radiators through wires, or can also be directly connected to the corresponding radiators through interfaces.
  • first end of the first radiator 101 that is close to the first gap 31 can be understood as the end of the two ends of the first radiator 101 with a smaller distance from the first gap 31 , for example, as shown in FIG. 1
  • the upper end of the first radiator 101 in the embodiment; the first end of the second radiator 102 close to the first gap 31 can be understood as the end with a smaller distance from the first gap 31 among the two ends of the second radiator 102 , is the upper end of the second radiator 102 in the embodiment shown in FIG. 1 .
  • the feed signal transmitted through the first port 103 and the feed signal transmitted through the second port 104 are out of phase, so that the flow direction of the feed current transmitted through the first port 103 into the first radiator 101 is the same as that of the feed signal transmitted through the second port 104.
  • the feeding currents transmitted into the second radiator 102 through the second port 104 flow in opposite directions. For example, when the feeding current in the first radiator 101 flows from the first end to the second end, the second radiator 102 The feed current in the inside flows from its second end to its first end.
  • the annular structure can be a ring-shaped metal sheet, and when the above-mentioned antenna structure is assembled on the electronic device, the annular metal sheet can be arranged in parallel with the panel of the electronic device, so as to reduce the amount of the ring-shaped structure in the electronic device. occupied space.
  • the above-mentioned annular metal sheet may specifically be a metal sheet, a laser direct structuring (LDS) wiring, a flexible printed circuit (FPC) wiring, etc., which are not specifically limited herein.
  • LDS laser direct structuring
  • FPC flexible printed circuit
  • the above-mentioned ring structure can be any ring structure connected end to end, such as: square, diamond, etc., and the ring structure is not limited to the one shown in FIGS. 1 and 2. ring.
  • the first gap 31, the second gap 32, and the third gap 33 are used to open the second end of the first radiator 101, open the second end of the second radiator 102, and open the third radiator Both ends of 201 are open-circuited, and the shape of the gap is not limited to a rectangle as shown in FIG. 1 , and it can also be a wave shape, a question shape, or the like.
  • first gap 31 , the second gap 32 and the third gap 33 may be filled with non-conductive material or air.
  • the second end of the first radiator 101 is open-circuited, the second end of the second radiator 102 is open-circuited, and both ends of the third radiator 201 are open-circuited.
  • the second end of the first radiator 101 is open-circuited, the second end of the second radiator 102 is open-circuited, and both ends of the third radiator 201 are open-circuited.
  • the second end of the first radiator 101 when the second end of the first radiator 101 is connected to components such as capacitors or inductors so as to transmit a current with a preset resonant frequency in the first radiator 101, the second end of the first radiator 101 is equivalent to an open circuit state , that is, the second end of the first radiator 101 , the second end of the second radiator 102 , and the two ends of the third radiator 201 are respectively in an equivalent open-circuit state with respect to the resonant frequency of the antenna structure.
  • the current in the first radiator 101 and the current in the second radiator 102 are polarized orthogonal current modes.
  • two polarized orthogonal current modes can be fed excited on the same low-profile structure.
  • the first antenna 10 and the second antenna 20 can be arranged on the same ring structure, thereby reducing the size of the first antenna 10 and the second antenna 20.
  • the volume of the second antenna 20, and the annular structure can be a plate-like or sheet-like structure, which can be arranged parallel to the panel or casing of the electronic device, so that only a small space is occupied, thereby reducing the volume of the electronic device .
  • the first radiator 101 and the second radiator 102 may have symmetrical structures along the first symmetry axis A, for example, the symmetrical structures shown in FIG. 1 .
  • the first radiator 101 and the second radiator 102 only need to have an electrically symmetrical structure, which is not limited to the structure shown in FIG. 1 .
  • the first port 103 and the second port 104 on the first antenna 10 are used to connect to the first antenna feed end 41 , and the first port 103 on the second antenna 20
  • the three ports 202 are used to connect to the second antenna feed end 42 , and the phase angle of the electrical signal transmitted to the first radiator 101 via the first port 103 and the electrical signal transmitted to the second radiator 102 via the second port 104 A difference of 180 degrees.
  • the third port 202 is connected to the position on the first symmetry axis A of the third radiator 201, and the first radiator 201 and the second radiator 202 are distributed on opposite sides of the first symmetry axis A, so that the The electrical signals output from the third port 202 to the third radiator 201 go to both ends of the third radiator 201 , namely from the third port 202 to the second gap 32 and from the third port 202 to the third gap 33 .
  • the third radiator 201 does not necessarily have an absolutely symmetrical structure with respect to the first symmetry axis A, and the third port 202 is connected to the first symmetry axis A of the third radiator 201
  • the position above can be understood as: the position where the third port 202 is connected to the third radiator 201 can be in the vicinity of the first symmetry axis A, that is, the third port 202 is connected to the middle area of the third radiator 201.
  • the first axis of symmetry A intersects this intermediate region.
  • the middle area may be a part of the third radiator 201, and the vertical distance between any point in the middle area and the first symmetry axis A is less than or equal to a preset distance value (for example: 0.5mm), then the
  • the third port 202 may be connected to the third radiator 201 through a connection point located in the middle area, and the connection point may be a solder pad or a connection interface or the like.
  • first port 103 and the second port 104 on the first antenna 10 are used to connect with the first antenna feed end 41, which can be understood as: the feed signal output by the first antenna feed end 41 is divided into After the two equal-amplitude and opposite-phase electrical signals are respectively transmitted to the corresponding radiators through the first port 103 and the second port 104 .
  • phase angle of the electrical signal transmitted to the first radiator 101 via the first port 103 and the electrical signal transmitted to the second radiator 102 via the second port 104 is 180 degrees out of phase (ie out of phase)
  • any of the following can be used: a method:
  • the antenna structure further includes: a power divider 40 , a first phase-shifting element 50 and a second phase-shifting element 60 ;
  • the first port 103 is connected to the first end of the power divider 40 via the first phase shifting element 50
  • the second port 104 is connected to the power divider 40 via the second phase shifting element 60
  • the second end of the power divider 40 is connected to the second end, and the third end of the power divider 40 is used to connect with the first antenna feed end 41;
  • the phase angle between the electrical signal processed by the first phase shifting element 50 and the electrical signal processed by the second phase shifting element 50 differs by 180 degrees.
  • the power divider 40 is used to equally divide the feed signal of the first antenna feed end 41 into two sub-signals with the same amplitude and the same phase.
  • One of the sub-signals is passed through the first phase shifting element 50 and the first port.
  • 103 is transmitted to the first radiator 101
  • another sub-signal is transmitted to the second radiator 102 via the second phase shifting element 60 and the second port 104 .
  • the above-mentioned power divider may be a 3dB power divider, so as to reduce the loss caused by the power divider to the feed signal.
  • the above-mentioned power divider 40 can be replaced with: a combiner, or other radio frequency devices or radio frequency circuits with a power distribution function, and the feeding circuit of the first antenna is not specifically described here. limited.
  • first phase shift element may be the first phase shifter 50
  • second phase shift element may be the second phase shifter 60 .
  • phase shift angle of the first phase shifter 50 may be +90 degrees, and the phase shift angle of the second phase shifter 60 may be -90 degrees.
  • the phase shift angle of the first phase shifter 50 may be -90 degrees, and the phase shift angle of the second phase shifter 60 may be +90 degrees.
  • phase shift angles of the first phase shifter 50 and the second phase shifter 60 can also be other phase shift angles except +90 degrees and -90 degrees, and it is only necessary to ensure that the first phase shifter 50 and the first phase shifter
  • the phase shift angles of the two phase shifters 60 may differ by 180 degrees.
  • the antenna structure further includes: a power divider 40 and an inverter 70;
  • One of the first port 103 and the second port 104 ( FIG. 3 takes the connection between the second port 104 and the inverter 70 as an example), through the second port of the inverter 70 and the power divider 40 .
  • One end is electrically connected, and the other one of the first port 103 and the second port 104 is electrically connected to the second end of the power divider 40, and the third end of the power divider 40 is used for connecting with the second end of the power divider 40.
  • An antenna feed end 41 is connected.
  • the power divider 40 is used to equally divide the feed signal of the first antenna feed end 41 into two sub-signals with equal amplitude and the same phase, one of which is passed through the inverter 70 and the first port. 103 is transmitted to the first radiator 101, and the other sub-signal is transmitted to the second radiator 102 through the second port 104, or one of the sub-signals is processed by the inverter 70, and then transmitted to the second radiator through the second port 104. On the two radiators 102 , another sub-signal is transmitted to the first radiator 101 through the first port 103 .
  • the antenna structure further includes: a power divider, the first port is electrically connected to the first end of the power divider through a first signal transmission line, and the second port is connected to the power divider through a second signal transmission line The second end of the power divider is electrically connected, and the third end of the power divider is connected to the first antenna feed end.
  • the length or impedance of the first signal transmission line and the second signal transmission line are different, so that the electrical signal transmitted to the first radiator 101 via the first signal transmission line and the electrical signal transmitted to the second radiator 102 via the second signal transmission line
  • the phase angles differ by 180 degrees.
  • the current in the first radiator 101 and the current in the second radiator 102 can be in a polarized orthogonal current mode.
  • the current flow in the ring structure can be as shown in Figure 4, wherein the current in the first radiator 101 is transmitted in the B direction, the current in the second radiator 102 is transmitted in the C direction, the first The current in the three radiators 201 is divided into two parts, one part of the current is transmitted in the D direction, and the other part of the current is transmitted in the D' direction.
  • the current flow direction in the ring structure can be periodically changed following the radiation frequency, which is not limited to the current flow direction as shown in FIG. 4 .
  • the isolation between the first antenna and the second antenna can be increased, for example, as shown in Figure 5
  • the line X in the illustrated embodiment represents the transmission coefficient between the first antenna (specifically, the first port 103 and the second port 104) and the second antenna (specifically, the third port 202). The smaller the transmission coefficient, the greater the isolation.
  • the transmission coefficient between the first antenna and the second antenna can reach -45dB, which is usually -20dB to -30dB compared to the related art
  • the transmission coefficient is small, thereby improving the isolation between the first antenna and the second antenna in the embodiment of the present application, so that the mutual interference between the first antenna and the second antenna can be effectively reduced, and the first antenna and the second antenna can be improved.
  • RF performance of two antennas
  • the line Y shown in FIG. 5 represents the reflection coefficient of the first antenna
  • the line Z represents the reflection coefficient of the second antenna.
  • an orthogonal current mode may be implemented on the ring structure, and two current modes with orthogonal polarizations may be fed and excited on the ring structure, so as to improve the ports of the first antenna and the second antenna. Therefore, the radiators of the first antenna and the second antenna can be arranged on the same ring structure, thereby avoiding setting the radiators in different positions for the first antenna and the second antenna respectively. Therefore, the space occupied by the first antenna and the second antenna is reduced, so that the space for installing the antenna on the electronic device can be reduced, and the effect of reducing the volume of the electronic device can be achieved.
  • FIG. 6 is a schematic diagram of another antenna structure provided by an embodiment of the present application
  • FIG. 7 is a feeding circuit diagram of another antenna structure provided by an embodiment of the present application.
  • the annular structure and the feeding circuit in this embodiment are the same as the annular structure and the feeding circuit in FIG. 1 and FIG. 2 respectively, and will not be repeated here. The difference is: as shown in FIG. 6 and FIG. 7 .
  • the shown antenna structure further includes: a fourth port 61, a fifth port 62 and a sixth port 63;
  • the first port 103 and the fourth port 61 are connected to the first end of the first radiator 101
  • the second port 104 and the fifth port 62 are connected to the first end of the second radiator 102
  • the third port 202 and the sixth port 63 is connected to the position on the first symmetry axis A of the third radiator 201;
  • the first port 103, the second port 104 and the third port 202 are located outside the annular structure, and the fourth port 61, the fifth port 62 and the sixth port 63 are located inside the annular structure .
  • the fourth port 61, the fifth port 62 and the sixth port 63 are grounded, the first port 103 and the second port 104 are used to connect with the first antenna feed end 41, and the third port 202 is used to feed the second antenna
  • the terminal 42 is connected, or the first port 103, the second port 104 and the third port 202 are grounded, and the fourth port 61 and the fifth port 62 are used for connecting with the first antenna feeding terminal 41, and the sixth port 63 is used for Connected to the second antenna feed end 42 .
  • the above grounding can also be understood as: other equivalent grounding states for the resonant frequency of the antenna structure, the equivalent grounding state is the same as the equivalent open circuit in the embodiments shown in FIG. 1 and FIG. 2 . Status has a similar meaning and will not be repeated here.
  • first port 103, the second port 104 and the third port 202 may be located inside the annular structure, and the fourth port 61, the fifth port 62 and the sixth port 63 may be located at the inner side of the annular structure. outside of the ring structure.
  • the fourth port 61 , the fifth port 62 and the sixth port 63 are grounded, and the first port 103 and the second port 104 are used to connect with the first antenna feeding terminal 41 , and the third The port 202 is used to connect with the second antenna feed end 42 as an example.
  • the phase of the electrical signal between the first port 103 and the second port 104 can be realized in the same manner as in the antenna structure shown in FIG. 2 .
  • the angle differs by 180 degrees, which will not be repeated here.
  • the antenna structure provided by the embodiments of the present application has the same beneficial effects as the antenna structure shown in FIG. 1 , and also facilitates antenna matching by adding a short-circuit grounding port, thereby improving the performance of the antenna.
  • FIG. 8 the graph of the ratio between input power and radiated power, wherein the curve H is the ratio of the input power to the radiated power of the first antenna 10 in the antenna structure shown in FIG. 1 ; the curve I is The ratio of the input power to the radiated power of the second antenna 20 in the antenna structure shown in FIG. 1; the curve J is the ratio of the input power to the radiated power of the first antenna 10 in the antenna structure shown in FIG. 6; the curve K is The ratio of the input power to the radiated power of the second antenna 20 in the antenna structure shown in FIG. 6 .
  • an embodiment of the present application further provides an electronic device, and the electronic device includes the antenna structure provided in any of the foregoing embodiments.
  • the antenna structure can be leaked outside the housing of the electronic device or can be arranged in a receiving cavity in the housing of the electronic device, and the radiators in the antenna structure can be distributed and insulated from other metal parts on the electronic device.
  • the electronic device further includes a camera 91 , and the annular structure 92 in the antenna structure (ie the first radiator 101 , the second radiator 102 and the third radiator as shown in FIG. 1 ) 201 ) is arranged around the camera 91 .
  • the antenna structure can be matched with the installation area of the camera on the electronic device, so that the space surrounded by the annular structure can be utilized, which is beneficial to reduce the size of the electronic device.
  • the annular structure 92 can also be arranged at any position in the electronic device.
  • the annular structure 92 can be attached to the casing of the electronic device. Inside of 90.
  • the port 111 of each antenna can be connected between the circuit board 112 in the electronic device and the corresponding radiator 113 (for example, the first port 103 corresponds to the first radiator 101 ), and the port The connection point between 111 and the corresponding radiator 113 is located on the side of the radiator 113 facing away from the housing 90 .
  • the annular structure is a sheet-like structure located in the same plane, it is beneficial to realize the installation of the antenna structure in the electronic device with small thickness such as a mobile phone.
  • a through hole 94 may also be opened on the housing 90 of the electronic device, so that the radiator 113 is exposed to the surface of the electronic device through the through hole 94 .
  • the port 111 of each antenna can be connected between the circuit board 112 in the electronic device and the corresponding radiator 113 (for example, the first port 103 corresponds to the first radiator 101 ), and the port 111 corresponds to the corresponding radiator 113
  • the connection point of the radiator 113 is located on the side of the radiator 113 facing into the electronic device.
  • a through hole is formed on the metal casing, so that the annular structure in the antenna structure is arranged in the through hole to pass through the through hole Being exposed to the metal casing can achieve insulation between the antenna structure and the metal casing.
  • an insulating material may also be filled between the radiator of the antenna structure and the metal casing.
  • the thickness of the electronic device can be further reduced by opening a through hole on the electronic device, so that the annular structure is exposed to the outside of the casing of the electronic device through the through hole.

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Abstract

本申请公开了一种天线结构和电子设备，属于通信技术领域。其中，天线结构包括：第一天线和第二天线，第一天线包括第一辐射体、第二辐射体、第一端口以及第二端口，第二天线包括第三辐射体和第三端口；第一辐射体、第二辐射体以及第三辐射体共同构成环状结构，且第一辐射体与第二辐射体之间具有第一间隙，第一辐射体与第三辐射体之间具有第二间隙，第二辐射体与第三辐射体之间具有第三间隙；第一端口连接于第一辐射体的靠近第一间隙的第一端，第二端口连接于第二辐射体的靠近第一间隙的第一端，第三端口连接于第三辐射体的中间区域，第一辐射体和第二辐射体分别位于第一对称轴的相对两侧。

Description

天线结构和电子设备
相关申请的交叉引用
本申请主张在2020年9月4日在中国提交的中国专利申请号No.202010923239.1的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种天线结构和电子设备。
背景技术
随着通信技术的发展，可以在电子设备上设置多个天线，以提升电子设备在信号传输中的数据吞吐量和通信距离等，例如：多输入多输出(Multi-Input Multi-Output，MIMO)技术。但是，在多天线通信系统中，需要增加天线之间的隔离度，以减小天线间的相互干扰，这将会降低通信系统的数据吞吐量，进而使传输速率变慢。
在相关技术中，为了提高天线间的隔离度，往往通过增加天线之间的间隔距离实现，这样，便增大了电子设备上用于安装天线的安装空间，使得电子设备的体积增大。
发明内容
本申请实施例的目的是提供一种天线结构和电子设备，能够解决多天线通信系统造成电子设备的体积增大的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种天线结构，包括：第一天线和第二天线，所述第一天线包括第一辐射体、第二辐射体、第一端口以及第二端口，所述第二天线包括第三辐射体和第三端口；
所述第一辐射体、所述第二辐射体以及所述第三辐射体共同构成环状结构，且所述第一辐射体与所述第二辐射体之间具有第一间隙，所述第一辐射体与所述第三辐射体之间具有第二间隙，所述第二辐射体与所述第三辐射体 之间具有第三间隙；
所述第一端口连接于所述第一辐射体的靠近所述第一间隙的第一端，所述第二端口连接于所述第二辐射体的靠近所述第一间隙的第一端，且经所述第一端口传输的馈电信号与经所述第二端口传输的馈电信号反相，所述第三端口连接于所述第三辐射体的中间区域，所述第一辐射体和所述第二辐射体分别位于第一对称轴的相对两侧，所述第一对称轴与所述中间区域相交。
第二方面，本申请实施例提供了一种电子设备，包括第一方面的所述天线结构。
在本申请实施例中，使第一天线和第二天线的辐射体共同构成环状结构，任意两个辐射体之间具有间隙，且第三辐射体沿第一对称轴对称，且第一辐射体和第二辐射体分别位于该第一对称轴的相对两侧。这样，能够将两个极化正交的电流模式在同一个环状结构上实现馈电激励，以提高第一天线的端口和第二天线的端口之间的隔离度，从而使得第一天线和第二天线的辐射体能够设置于同一个环状结构上，进而避免了分别为第一天线和第二天线在不同的位置设置辐射体，从而减小了第一天线和第二天线的占用空间，从而能够减小电子设备上用于安装天线的空间，达到减小电子设备的体积的效果。
附图说明
图1是本申请实施例提供的一种天线结构的示意图；
图2是本申请实施例提供的一种天线结构中的馈电电路图之一；
图3是本申请实施例提供的一种天线结构中的馈电电路图之二；
图4是本申请实施例提供的一种天线结构中电流方向的示意图；
图5是本申请实施例提供的一种天线结构的隔离度的示意图；
图6是本申请实施例提供的另一种天线结构的示意图；
图7是本申请实施例提供的另一种天线结构中的馈电电路图；
图8是本申请实施例提供的另一种天线结构的辐射效率的示意图；
图9是本申请实施例提供的一种电子设备的示意图；
图10是本申请实施例提供的另一种电子设备的示意图；
图11是本申请实施例提供的一种电子设备中天线结构与非金属外壳的 结构示意图之一；
图12是本申请实施例提供的一种电子设备中天线结构与非金属外壳的结构示意图之二。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请实施例提供的天线结构能够在缩小两个天线之间的间隔距离的同时，还能够提升两个天线之间的隔离度，从而避免互不相关的编码信号相互串扰，且降低两个天线之间的耦合强度，以避免两个天线之间的耦合较强导致的多天线系统对外的数据吞吐量降低，造成多天线系统的传输速率变慢的缺陷，从而能够提升多天线系统的整体天线性能。
其中，上述多天线系统可以是射频天线系统，例如：2 x 2多输入多输出(Multi-Input Multi-Output，MIMO)通信系统，其还可以是蓝牙等近距离通信系统，，在此不作具体限定，且利用本申请实施例提供的天线结构，能够支持对天线间隔离度要求极高的高速双蓝牙天线通信技术。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的天线结构和电子设备进行详细地说明。
请参阅图1和图2，其中，图1是本申请实施例提供的一种天线结构的示意图；图2是本申请实施例提供的一种天线结构中的馈电电路图。如图1 所示，天线结构包括第一天线10和第二天线20，其中，第一天线10包括第一辐射体101、第二辐射体102、第一端口103以及第二端口104，第二天线20包括第三辐射体201和第三端口202。
其中，第一辐射体101、第二辐射体102以及第三辐射体201共同构成环状结构，且第一辐射体101与第二辐射体102之间具有第一间隙31，第一辐射体101与第三辐射体201之间具有第二间隙32，第二辐射体103与第三辐射体201之间具有第三间隙33。
另外，第一端口103连接于第一辐射体101的靠近第一间隙31的第一端，第二端口104连接于第二辐射体102的靠近第一间隙31的第一端，且经所述第一端口103传输的馈电信号与经所述第二端口104传输的馈电信号反相，第三端口202连接于第三辐射体201的第一对称轴A上的部位，第一辐射体101和第二辐射体102分布于第一对称轴A的相对两侧。
在具体实施中，上述第一端口103、第二端口104和第三端口202为天线馈电线路与辐射体之间的连接组件，其具体可以是：弹片、导电泡棉、导体线路、电磁耦合等接触或非接触式射频信号连接方式，在此并不穷举。且上述第一端口103、第二端口104和第三端口202可以通过导线与对应的辐射体连接，或者还可以通过接口直接连接于对应的辐射体上。
另外，上述第一辐射体101的靠近第一间隙31的第一端，可以理解为第一辐射体101的两端中与第一间隙31的距离较小的一端，例如：如图1所示实施例中第一辐射体101的上端；第二辐射体102的靠近第一间隙31的第一端，可以理解为第二辐射体102的两端中与第一间隙31的距离较小的一端，为如图1所示实施例中第二辐射体102的上端。
在应用中，经第一端口103传输的馈电信号与经第二端口104传输的馈电信号反相，可以使经第一端口103传输至第一辐射体101内的馈电电流的流向与经第二端口104传输至第二辐射体102内的馈电电流的流向相反，例如：在第一辐射体101内的馈电电流由其第一端流向第二端时，第二辐射体102内的馈电电流由其第二端流向第一端。
另外，环状结构可以是环状金属片，在将上述天线结构装配于电子设备上时，可以是该环状金属片与电子设备的面板平行设置，以减小该环状结构 在电子设备内的占用空间。
上述环状金属片具体可以是金属薄片、激光直接成型(Laser Direct Structuring，LDS)走线、柔性电路板(Flexible Printed Circuit，FPC)走线等，在此不作具体限定。
需要说明的是，在实际应用中，上述环状结构可以是任意首尾相连的环状结构，例如：方形、菱形等，在此并不限定该环状结构为如图1和2中所示的圆环。
而且，第一间隙31、第二间隙32和第三间隙33用于使第一辐射体101的第二端开路设置，使第二辐射体102的第二端开路设置，且使第三辐射体201的两端均开路设置，该间隙的形状并不限定为如图1中所示的矩形，其还可以是波浪形、题型等。
具体的，该第一间隙31、第二间隙32和第三间隙33内可以填充非导电材料或者空气。
另外，在实际应用中，第一辐射体101的第二端开路设置，使第二辐射体102的第二端开路设置，且使第三辐射体201的两端均开路设置还可以是指，在预设谐振频率下第一辐射体101的第二端开路设置，使第二辐射体102的第二端开路设置，且使第三辐射体201的两端均开路设置。例如：第一辐射体101的第二端与电容或者电感等元器件连接，以在第一辐射体101内传输预设谐振频率的电流时，第一辐射体101的第二端相当于开路状态，即第一辐射体101的第二端、第二辐射体102的第二端以及第三辐射体201的两端分别呈对所述天线结构的谐振频率而言的等效开路状态。
在工作中，第一辐射体101内的电流与第二辐射体102内的电流呈极化正交电流模式。另外，第三端口202与第三辐射体201的一端之间具有第一电流，第三端口202与第三辐射体201的另一端之间具有第二电流，且第一电流和第二电流呈极化正交电流模式。这样，可以将两个极化正交的电流模式在同一个低剖面结构上实现馈电激励。
本实施方式，能够在满足第一天线10和第二天线20之间的隔离度的同时，将第一天线10和第二天线20设置于同一环状结构上，从而缩小了第一天线10和第二天线20的体积，且该环状结构可以是板状或者片状结构，其 可以平行于电子设备的面板或者壳体设置，从而仅占用很小的空间，进而能够减小电子设备的体积。
作为一种可选的实施方式，第一辐射体101和第二辐射体102，可以沿第一对称轴A呈对称结构，例如：如图1中所示的对称结构。
当然，在具体实施中，第一辐射体101和第二辐射体102呈电气对称结构即可，其并不限定为如图1中所示结构。
这样，便于提升环状结构内特征电流模式的极化正交性能。
在一种可选的实施方式中，如图2所示，第一天线10上的第一端口103和第二端口104用于与第一天线馈电端41连接，第二天线20上的第三端口202用于与第二天线馈电端42连接，且经第一端口103传输至第一辐射体101的电信号与经第二端口104传输至第二辐射体102的电信号的相位角相差180度。
同时，第三端口202连接于第三辐射体201的第一对称轴A上的部位，且第一辐射体201和第二辐射体202分布于第一对称轴A的相对两侧，可以使经第三端口202输至第三辐射体201的电信号分别向第三辐射体201的两端，即由第三端口202流向第二间隙32和由第三端口202流向第三间隙33。
需要说明的是，在实际应用中，第三辐射体201并不一定关于第一对称轴A呈绝对对称的结构，且所述第三端口202连接于第三辐射体201的第一对称轴A上的部位可以理解为：第三端口202与第三辐射体201连接的位置可以在第一对称轴A的附近，即第三端口202连接于第三辐射体201的中间区域内即可，该第一对称轴A与该中间区域相交。具体的，所述中间区域可以是第三辐射体201的部分，且该中间区域内任意点与第一对称轴A的垂直距离小于或者等于预设距离值(例如：0.5mm)，则所述第三端口202可以通过位于该中间区域内的连接点与第三辐射体201连接，该连接点可以是焊垫或者连接接口等。
另外，所述第一天线10上的第一端口103和第二端口104用于与第一天线馈电端41连接，可以理解为：第一天线馈电端41输出的馈电信号被分割为两个等幅反相的电信号后，分别经第一端口103和第二端口104传输至对应的辐射体内。
为了实现：经第一端口103传输至第一辐射体101的电信号与经第二端口104传输至第二辐射体102的电信号的相位角相差180度(即反相)，可以采用以下任一种方式：
方式一
如图2所示，所述天线结构还包括：功分器40、第一移相元件50和第二移相元件60；
所述第一端口103经所述第一移相元件50与所述功分器40的第一端连接，所述第二端口104经所述第二移相元件60与所述功分器40的第二端连接，所述功分器40的第三端用于与第一天线馈电端41连接；
经所述第一移相元件50处理后的电信号和经所述第二移相元件50处理后的电信号之间的相位角相差180度。
其中，功分器40用于将第一天线馈电端41的馈电信号等分为两个振幅相等，且相位相同的子信号，其中一个子信号经第一移相元件50和第一端口103传输至第一辐射体101上，另一个子信号经第二移相元件60和第二端口104传输至第二辐射体102上。
另外，在具体实施中，上述功分器可以是3dB的功分器，以减小功分器对馈电信号产生的损耗。
需要说明的是，在实际应用中，可以将上述功分器40替换为：合路器，或其他具备功率分配功能的射频器件或射频电路，在此并不对第一天线的馈电电路作具体限定。
另外，上述第一移相元件可以是第一移相器50，第二移相元件可以是第二移相器60。
进一步的，第一移相器50的移相角可以是+90度，第二移相器60的移相角可以是-90度。或者，第一移相器50的移相角可以是-90度，第二移相器60的移相角可以是+90度。
当然，上述第一移相器50和第二移相器60的移相角还可以是除了+90度和-90度之外的其他移相角，仅需确保第一移相器50和第二移相器60的移相角相差180度即可。
方式二
如图3所示，所述天线结构还包括：功分器40和反相器70；
所述第一端口103和所述第二端口104中的一个(图3以第二端口104与反相器70连接为例)，经所述反相器70与所述功分器40的第一端电连接，所述第一端口103和所述第二端口104中的另一个与所述功分器40的第二端电连接，所述功分器40的第三端用于与第一天线馈电端41连接。
在工作中，功分器40用于将第一天线馈电端41的馈电信号等分为两个振幅相等，且相位相同的子信号，其中一个子信号经反相器70和第一端口103传输至第一辐射体101上，另一个子信号经第二端口104传输至第二辐射体102上，或者，其中一个子信号经反相器70处理后，经第二端口104传输至第二辐射体102上，另一个子信号经第一端口103传输至第一辐射体101上。
方式三
所述天线结构还包括：功分器，所述第一端口经第一信号传输线与所述功分器的第一端电连接，所述第二端口经第二信号传输线与所述功分器的第二端电连接，所述功分器的第三端与第一天线馈电端连接。
其中，第一信号传输线与第二信号传输线的长度或者阻抗不同，以使经第一信号传输线传输至第一辐射体101的电信号与经第二信号传输线传输至第二辐射体102的电信号的相位角相差180度。
需要说明的是，在实施方式一和实施方式二中，与第一端口103至第一天线馈电端之间的信号传输线与第二端口104至第一天线馈电端之间的信号传输线的长度相等，或者两者之间的长度差造成的相位差为0。
通过上述任一实施方式中的馈电电路后，可以使第一辐射体101内的电流与第二辐射体102内的电流呈极化正交电流模式。
例如：在某一时刻，环状结构内的电流流向可以如图4所示，其中，第一辐射体101内的电流沿B方向传输，第二辐射体102内的电流沿C方向传输，第三辐射体201内的电流分为两个部分，其中一部分电流沿D方向传输，另一部分电流沿D’方向传输。
需要说明的是，环状结构内的电流流向可以跟随辐射频率进行周期性的变化，其并不限定为如图4所示电流流向。
通过在同一环状结构上实现将两个极化正交的电流模式在环状结构上实现馈电激励，能够使第一天线与第二天线之间的隔离度增大，例如：如图5所示实施例中的线条X所示，该线条X表示第一天线(具体为第一端口103和第二端口104)和第二天线(具体为第三端口202)之间的传输系数，该传输系数越小，则表示隔离度越大，如图5所示，第一天线和第二天线之间的传输系数大可以达到-45dB，其相较于相关技术中通常为-20dB～-30dB的传输系数小，从而提升了本申请实施例中第一天线与第二天线的隔离度大，从而能够有效地降低第一天线与第二天线之间的相互干扰，能够提升第一天线与第二天线的射频性能。
另外，图5中所示线条Y表示第一天线的反射系数，线条Z表示第二天线的反射系数。
本申请实施例中，可以在环状结构上实现正交电流模式，并将两个极化正交的电流模式在环状结构上实现馈电激励，以提高第一天线的端口和第二天线的端口之间的隔离度，从而使得第一天线和第二天线的辐射体能够设置于同一个环状结构上，进而避免了分别为第一天线和第二天线在不同的位置设置辐射体，从而减小了第一天线和第二天线的占用空间，从而能够减小电子设备上用于安装天线的空间，达到减小电子设备的体积的效果。
请参阅图6和图7，其中，图6是本申请实施例提供的另一种天线结构的示意图；图7是本申请实施例提供的另一种天线结构中的馈电电路图。本实施方式中的环状结构和馈电电路分别与如图1和图2中的环状结构和馈电电路相同，在此不再赘述，不同之处在于：如图6和图7中所示天线结构还包括：第四端口61、第五端口62和第六端口63；
第一端口103和第四端口61连接于第一辐射体101的第一端，第二端口104和第五端口62连接于第二辐射体102的第一端，第三端口202和第六端口63连接于第三辐射体201的第一对称轴A上的部位；
一种实施方式，第一端口103、第二端口104和第三端口202位于所述环状结构的外侧，第四端口61、第五端口62和第六端口63位于所述环状结构的内侧。
第四端口61、第五端口62和第六端口63接地，且第一端口103和第二 端口104用于与第一天线馈电端41连接，第三端口202用于与第二天线馈电端42连接，或者，第一端口103、第二端口104和第三端口202接地，且第四端口61和第五端口62用于与第一天线馈电端41连接，第六端口63用于与第二天线馈电端42连接。
在具体实施中，上述接地还可以理解为：其他对所述天线结构的谐振频率而言的等效接地状态，该等效接地状态与如图1和图2所示实施例中的等效开路状态具有相似的含义，在此不再赘述。
另外，在其他实施方式中，还可以使第一端口103、第二端口104和第三端口202位于所述环状结构的内侧，第四端口61、第五端口62和第六端口63位于所述环状结构的外侧。
如图7所示实施例中，以第四端口61、第五端口62和第六端口63接地，且第一端口103和第二端口104用于与第一天线馈电端41连接，第三端口202用于与第二天线馈电端42连接为例，此时，可以利用与如图2所示天线结构中相同的方式实现第一端口103和第二端口104之间的电信号的相位角相差180度，在此不再赘述。
本申请实施例提供的天线结构，在具有如图1所示天线结构相同的有益效果的同时，还通过增加短路接地的端口，有利于天线匹配，进而能够提升天线的性能。例如：如图8所示，输入功率与辐射功率之间的比值曲线图，其中，曲线H为如图1所示天线结构中的第一天线10的输入功率与辐射功率的比值；曲线I为如图1所示天线结构中的第二天线20的输入功率与辐射功率的比值；曲线J为如图6所示天线结构中的第一天线10的输入功率与辐射功率的比值；曲线K为如图6所示天线结构中的第二天线20的输入功率与辐射功率的比值。
其中，输入功率与辐射功率之间的比值越大，则表示该天线的性能越好。有图8可知，增加了短路接地的端口后的第一天线10的性能和第二天线20的性能均有所提升。
请参阅图9和图10，本申请实施例还提供一种电子设备，该电子设备包括上述任一实施例提供的天线结构。
该天线结构可以外漏于电子设备的壳体或者设置于电子设备壳体内的收 容腔内均可，并使天线结构中的各个辐射体分布与电子设备上的其他金属部件绝缘。
例如：如图9所示，在电子设备还包括摄像头91，所述天线结构中的环状结构92(即如图1中所示第一辐射体101、第二辐射体102和第三辐射体201)环绕所述摄像头91设置。这样，可以使天线结构与电子设备上具有的摄像头的安装区域匹配，从而可以利用环状结构所围绕的空间，有利于减小电子设备的尺寸。
当然，该环状结构92还能够设置于电子设备内的任意位置，例如：如图10所示，在电子设备包括非金属外壳的情况下，该环状结构92贴设于电子设备的壳体90的内侧。
进一步的，如图11所示，各天线的端口111可以连接于电子设备内的电路板112和对应的辐射体113(例如：第一端口103与第一辐射体101对应)之间，且端口111与对应辐射体113的连接点位于该辐射体113的背向壳体90的一侧。
这样，鉴于环状结构呈位于同一平面内的片状结构，其有利于在手机等厚度较小的电子设备内实现天线结构的安装。
需要说明的是，在具体实施中，如图12所示，还可以在电子设备的壳体90上开设通孔94，以使辐射体113通过该通孔94外露于电子设备的表面。相同的，各天线的端口111可以连接于电子设备内的电路板112和对应的辐射体113(例如：第一端口103与第一辐射体101对应)之间，且端口111与对应辐射体113的连接点位于该辐射体113的朝向电子设备内的一侧。
尤其是，在所述电子设备具有金属外壳的情况下，所述金属外壳上开设有通孔，以使所述天线结构中的环状结构设置于所述通孔内，以通过所述通孔外露于所述金属外壳，能够实现使所述天线结构与所述金属外壳之间绝缘。
在具体实施中，为了实现：所述天线结构与所述金属外壳之间绝缘，还可以在天线结构的辐射体与金属外壳之间填充绝缘材料。
本实施方式中，通过在电子设备上开设通孔，以使环状结构通过所述通孔外露于电子设备的壳体外，能够进一步减小电子设备的厚度。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在 涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (8)

  1. 一种天线结构，包括：第一天线和第二天线，所述第一天线包括第一辐射体、第二辐射体、第一端口以及第二端口，所述第二天线包括第三辐射体和第三端口；
    所述第一辐射体、所述第二辐射体以及所述第三辐射体共同构成环状结构，且所述第一辐射体与所述第二辐射体之间具有第一间隙，所述第一辐射体与所述第三辐射体之间具有第二间隙，所述第二辐射体与所述第三辐射体之间具有第三间隙；
    所述第一端口连接于所述第一辐射体的靠近所述第一间隙的第一端，所述第二端口连接于所述第二辐射体的靠近所述第一间隙的第一端，且经所述第一端口传输的馈电信号与经所述第二端口传输的馈电信号反相，所述第三端口连接于所述第三辐射体的中间区域，所述第一辐射体和所述第二辐射体分别位于第一对称轴的相对两侧，所述第一对称轴与所述中间区域相交。
  2. 根据权利要求1所述的天线结构，其中，所述天线结构还包括：功分器、第一移相元件和第二移相元件；
    所述第一端口经所述第一移相元件与所述功分器的第一端连接，所述第二端口经所述第二移相元件与所述功分器的第二端连接，所述功分器的第三端用于与第一天线馈电端连接；
    经所述第一移相元件处理后的电信号和经所述第二移相元件处理后的电信号之间的相位角相差180度。
  3. 根据权利要求1所述的天线结构，其中，所述天线结构还包括：功分器和反相器；
    所述第一端口和所述第二端口中的一个，经所述反相器与所述功分器的第一端电连接，所述第一端口和所述第二端口中的另一个与所述功分器的第二端电连接，所述功分器的第三端用于与第一天线馈电端连接。
  4. 根据权利要求1所述的天线结构，其中，所述天线结构还包括：第四端口、第五端口和第六端口；
    所述第一端口和所述第四端口连接于所述第一辐射体的第一端，所述第 二端口和所述第五端口连接于所述第二辐射体的第一端，所述第三端口和所述第六端口连接于所述第三辐射体的所述第一对称轴上的部位；
    且所述第一端口、所述第二端口和所述第三端口分别位于所述环状结构的外侧和内侧中的一侧，所述第四端口、所述第五端口和所述第六端口分别位于所述环状结构的外侧和内侧中的另一侧；
    所述第四端口、所述第五端口和所述第六端口接地，且所述第一端口和所述第二端口用于与第一天线馈电端连接，所述第三端口用于与第二天线馈电端连接，或者，所述第一端口、所述第二端口和所述第三端口接地，且所述第四端口和所述第五端口用于与第一天线馈电端连接，所述第六端口用于与第二天线馈电端连接。
  5. 根据权利要求1至3中任一项所述的天线结构，其中，所述第一辐射体和所述第二辐射体沿所述第一对称轴对称分布。
  6. 一种电子设备，包括：如权利要求1至5中任一项所述的天线结构。
  7. 根据权利要求6所述的电子设备，其中，所述电子设备还包括摄像头，所述天线结构中的环状结构环绕所述摄像头设置。
  8. 根据权利要求6或7所述的电子设备，其中，在所述电子设备具有金属外壳的情况下，所述金属外壳上开设有通孔，所述天线结构中的环状结构设置于所述通孔内，且与所述金属外壳绝缘。
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CN111987431A (zh) 2020-11-24
US20230208027A1 (en) 2023-06-29
EP4210169A4 (en) 2024-02-28

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