WO2024001075A1 - Nfc天线组件及系统、电子设备、终端设备组件 - Google Patents

Nfc天线组件及系统、电子设备、终端设备组件 Download PDF

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Publication number
WO2024001075A1
WO2024001075A1 PCT/CN2022/139743 CN2022139743W WO2024001075A1 WO 2024001075 A1 WO2024001075 A1 WO 2024001075A1 CN 2022139743 W CN2022139743 W CN 2022139743W WO 2024001075 A1 WO2024001075 A1 WO 2024001075A1
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WO
WIPO (PCT)
Prior art keywords
antenna radiator
nfc
relay
nfc antenna
radiator
Prior art date
Application number
PCT/CN2022/139743
Other languages
English (en)
French (fr)
Inventor
黄武鑫
万小勇
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2024001075A1 publication Critical patent/WO2024001075A1/zh

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises

Definitions

  • This application relates to the field of NFC technology, specifically to an NFC antenna component and system, electronic equipment, and terminal equipment components.
  • NFC Near Field Communication
  • RFID contactless radio frequency identification
  • interconnection technology Evolved, by integrating the functions of inductive card readers, inductive cards and point-to-point communication on a single chip, mobile terminals are used to realize mobile payment, electronic ticketing, access control, mobile identity recognition, anti-counterfeiting and other applications.
  • RFID radio frequency identification
  • This application provides an NFC antenna component and system, electronic equipment, and terminal equipment components that can improve NFC performance.
  • this application provides an NFC antenna assembly, including:
  • the first NFC antenna radiator is used to transmit NFC signals under the stimulation of the NFC radio frequency chip
  • the relay antenna radiator is spaced apart from the first NFC antenna radiator, and the orthographic projection of the relay antenna radiator on the surface of the first NFC antenna radiator covers at least Part of the first NFC antenna radiator, the relay antenna radiator is coupled with the first NFC antenna radiator, and the relay antenna radiator is used to amplify and forward the NFC signal.
  • this application also provides an NFC antenna system, including a second NFC antenna radiator and the NFC antenna assembly.
  • the second NFC antenna radiator is used to receive the amplified signal amplified by the relay antenna radiator. NFC signal.
  • this application also provides an electronic device, including a housing and the NFC antenna assembly, and the first NFC antenna radiator is provided in the housing.
  • this application also provides a terminal equipment assembly, including equipment accessories, a terminal equipment and the NFC antenna assembly.
  • the equipment accessories are installed outside the terminal equipment, and the first NFC antenna radiator
  • the relay antenna radiator is provided in the terminal equipment, and the relay antenna radiator is provided on the equipment accessory.
  • the NFC antenna assembly provided by this application is provided with a relay antenna radiator. Since the relay antenna radiator is coupled with the first NFC antenna radiator, the relay antenna radiator can receive the NFC signal emitted by the first NFC antenna radiator for amplification and Forwarding, the transmission path of the NFC signal can be increased, so that the relay antenna radiator forms a gain antenna radiator that transmits the NFC signal, thereby extending the transmission distance of the NFC signal and improving the NFC performance of the NFC antenna assembly.
  • the electronic equipment, terminal equipment components and NFC antenna system provided by this application include the NFC antenna component and therefore have better NFC performance.
  • Figure 1 is a schematic structural diagram of an NFC antenna system provided by an embodiment of the present application.
  • Figure 2 is a schematic structural diagram of the NFC antenna system shown in Figure 1 with the relay antenna radiator located on the side of the first NFC antenna radiator away from the second NFC antenna radiator;
  • FIG. 3 is a schematic structural diagram of an NFC antenna assembly provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a terminal equipment component provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • Figure 6 is an exploded schematic diagram of the electronic device shown in Figure 5;
  • Figure 7 is a schematic structural diagram of the NFC antenna assembly shown in Figure 3 including a first NFC antenna radiator, a relay antenna radiator and a matching circuit;
  • Figure 8 is a schematic structural diagram of the matching circuit of the NFC antenna assembly shown in Figure 7 with one end electrically connected to the relay antenna radiator and the other end grounded;
  • Figure 9 is a schematic structural diagram of the relay antenna radiator of the NFC antenna assembly shown in Figure 7 including an annular wire winding;
  • Figure 10 is a schematic structural diagram of the relay antenna radiator and the first NFC antenna radiator of the NFC antenna assembly shown in Figure 7 being partially offset;
  • FIG 11 is a schematic structural diagram of the NFC antenna assembly shown in Figure 7 including a relay antenna radiator;
  • Figure 12 is a schematic structural diagram of the NFC antenna assembly shown in Figure 7 including three relay antenna radiators;
  • Figure 13 is a schematic structural diagram of the three relay antenna radiators of the NFC antenna assembly shown in Figure 12 located on the side of the first NFC antenna radiator facing the second NFC antenna radiator;
  • Figure 14 is a schematic structural diagram of the three relay antenna radiators of the NFC antenna assembly shown in Figure 12 located on the side of the first NFC antenna radiator away from the second NFC antenna radiator;
  • Figure 15 shows that two of the three relay antenna radiators of the NFC antenna assembly shown in Figure 12 are located on the side of the first NFC antenna radiator facing the second NFC antenna radiator, and the other relay antenna radiates A schematic structural diagram of the body located on the side of the first NFC antenna radiator away from the second NFC antenna radiator;
  • Figure 16 shows that two of the three relay antenna radiators of the NFC antenna assembly shown in Figure 12 are located on the side of the first NFC antenna radiator away from the second NFC antenna radiator, and the other relay antenna radiates A schematic structural diagram of the body located on the side of the first NFC antenna radiator facing the second NFC antenna radiator;
  • Figure 17 is a schematic structural diagram of the NFC antenna assembly shown in Figure 11 which also includes an NFC radio frequency chip.
  • FIG. 1 is a schematic structural diagram of an NFC antenna system 200 provided by an embodiment of the present application.
  • the NFC antenna system 200 includes a second NFC antenna radiator 20 and an NFC antenna component 100 .
  • the NFC antenna assembly 100 includes a first NFC antenna radiator 10 and a relay antenna radiator 11 .
  • the first NFC antenna radiator 10 is used to transmit NFC signals.
  • the second NFC antenna radiator 20 is used to receive NFC signals.
  • the relay antenna radiator 11 is used to amplify and forward the NFC signal emitted by the first NFC antenna radiator 10 .
  • the first NFC antenna radiator 10 serves as the transmitting end of the NFC antenna system 200
  • the second NFC antenna radiator 20 serves as the receiving end of the NFC antenna system 200
  • the first NFC antenna radiator 10 may be a radiator that supports transmitting antenna signals or a radiator that supports transmitting and receiving antenna signals
  • the second NFC antenna radiator 20 may be a radiator that supports receiving antenna signals or a radiator that supports transmitting and receiving antenna signals.
  • the first NFC antenna radiator 10 is used to support the transmission of NFC signals
  • the relay antenna radiator 11 is used to receive the NFC signal transmitted by the first NFC antenna radiator 10 and transmit the received NFC signal forwarded to the second NFC antenna radiator 20 .
  • the first NFC antenna radiator 10 transmits NFC signals
  • the relay antenna radiator 11 receives part of the NFC signals transmitted by the first NFC antenna radiator 10 and forwards the received part of the NFC signals to the third NFC antenna radiator.
  • the second NFC antenna radiator 20 another part of the NFC signal emitted by the first NFC antenna radiator 10 can be directly transmitted to the second NFC antenna radiator 20 without being forwarded by the relay antenna radiator 11.
  • the first NFC antenna radiator 10 and the second NFC antenna radiator 20 are both transceiver antenna radiators
  • the first NFC antenna radiator 10 can be used as the receiving end of the NFC antenna system 200.
  • the two NFC antenna radiators 20 can serve as the transmitting end of the NFC antenna system 200 .
  • the second NFC antenna radiator 20 generates a feedback signal after receiving the NFC signal transmitted by the first NFC antenna radiator 10
  • the relay antenna radiator 11 can also receive the second NFC antenna radiator 20 The feedback signal is transmitted and the received feedback signal is forwarded to the first NFC antenna radiator 10 .
  • the second NFC antenna radiator 20 generates a feedback signal after receiving the NFC signal transmitted by the first NFC antenna radiator 10 , and the relay antenna radiator 11 can also receive the second NFC antenna radiator. 20 and forwards the received partial feedback signal to the first NFC antenna radiator 10.
  • the other part of the feedback signal transmitted by the second NFC antenna radiator 20 can be directly transmitted without being forwarded by the relay antenna radiator 11. transmitted to the first NFC antenna radiator 10 .
  • the second NFC antenna radiator 20 can be provided on an access control card swiping machine, a bus ticket vending machine, a ticket inspection machine, a mobile terminal device 30, etc. that can support NFC communication.
  • the first NFC antenna radiator 10 and the relay antenna radiator 11 of the NFC antenna assembly 100 can be jointly provided on mobile phones, tablets, watches, bracelets and other devices; or, the first NFC antenna radiator 10 of the NFC antenna assembly 100 It can be installed on mobile phones, tablet computers, watches, bracelets and other devices.
  • the relay antenna radiator 11 of the NFC antenna assembly 100 can be installed on corresponding accessories of mobile phones, tablet computers, watches, bracelets and other devices. In a possible embodiment, as shown in FIG.
  • the relay antenna radiator 11 is provided on the side of the first NFC antenna radiator 10 facing the second NFC antenna radiator 20 .
  • the relay antenna radiator 11 may be provided on the side of the first NFC antenna radiator 10 away from the second NFC antenna radiator 20 .
  • the first NFC antenna radiator 10, the relay antenna radiator 11, and the second NFC antenna radiator 20 are all conductors.
  • the first NFC antenna radiator 10, the relay antenna radiator 11, and the second NFC antenna radiator 20 may all include annular wire windings.
  • the first NFC antenna radiator 10, the relay antenna radiator 11, and the second NFC antenna radiator 20 can all be coil antenna radiators.
  • the shape of the first NFC antenna radiator 10, the shape of the relay antenna radiator 11, and the shape of the second NFC antenna radiator 20 can also be circular, square, rectangular, triangular, other polygons, and various special shapes. wait.
  • the materials of the first NFC antenna radiator 10 , the material of the relay antenna radiator 11 and the second NFC antenna radiator 20 may be the same or different.
  • the material of the first NFC antenna radiator 10 may be metal, alloy, composite metal, composite polymer conductive material, etc.
  • the material of the relay antenna radiator 11 may be metal, alloy, composite metal, composite polymer conductive material, etc.
  • the material of the second NFC antenna radiator 20 may be metal, alloy, composite metal, composite polymer conductive material, etc.
  • the material of the first NFC antenna radiator 10 may be copper, silver, copper alloy, aluminum alloy, carbon fiber, graphene, conductive plastic, etc.
  • the material of the relay antenna radiator 11 may be copper, silver, copper alloy, aluminum alloy, carbon fiber, graphene, conductive plastic, etc.
  • the material of the second NFC antenna radiator 20 may be copper, silver, copper alloy, aluminum alloy, carbon fiber, graphene, conductive plastic, etc.
  • the NFC antenna system 200 provided by this application transmits NFC signals through the first NFC antenna radiator 10, the second NFC antenna radiator 20 receives the NFC signal, and the relay antenna radiator 11 receives the NFC signal transmitted by the first NFC antenna radiator 10 and performs Forwarding, since the quality factor of the relay antenna radiator 11 is greater than 1, it has the effect of amplifying and enhancing the received NFC signal. Therefore, the transmission distance of the NFC signal can be extended, and the first NFC antenna radiator 10 and the second NFC antenna can be improved. NFC communication performance between radiators 20.
  • the relay antenna radiator 11 can also receive the feedback signal transmitted by the second NFC antenna radiator 20 and forward it.
  • the quality factor of 11 is greater than 1, which also has the effect of amplifying and enhancing the received feedback signal. Therefore, the transmission distance of the feedback signal can be extended and the NFC between the first NFC antenna radiator 10 and the second NFC antenna radiator 20 can be improved. Communication performance.
  • FIG. 3 is a schematic structural diagram of an NFC antenna assembly 100 provided by an embodiment of the present application.
  • the NFC antenna assembly 100 includes a first NFC antenna radiator 10 and a relay antenna radiator 11 .
  • the first NFC antenna radiator 10 is used to transmit NFC signals.
  • the frequency of the NFC signal transmitted by the first NFC antenna radiator 10 may include 13.56 MHz.
  • the shape of the first NFC antenna radiator 10 may be circular, square, rectangular, triangular, other polygons, various special shapes, etc.
  • the material of the first NFC antenna radiator 10 may be metal, alloy, composite metal, composite polymer conductive material, etc.
  • the first NFC antenna radiator 10 may include a ring-shaped wire winding. In other words, the first NFC antenna radiator 10 may be a coil antenna radiator.
  • the relay antenna radiator 11 is coupled with the first NFC antenna radiator 10 .
  • the shape of the relay antenna radiator 11 may be circular, square, rectangular, triangular, other polygonal, various special shapes, etc.
  • the material of the relay antenna radiator 11 may be metal, alloy, composite metal, composite polymer conductive material, etc.
  • the relay antenna radiator 11 may include a ring-shaped wire winding. In other words, the relay antenna radiator 11 may be a coil antenna radiator.
  • the shape of the relay antenna radiator 11 may be the same as the shape of the first NFC antenna radiator 10 , or may be different.
  • the material of the relay antenna radiator 11 may be the same as the material of the first NFC antenna radiator 10 , or may be different.
  • At least part of the relay antenna radiator 11 and the first NFC antenna radiator 10 may be arranged opposite and coupled along the thickness direction of the NFC antenna assembly 100 . In another possible embodiment, at least part of the relay antenna radiator 11 and the first NFC antenna radiator 10 may be arranged opposite and coupled along the length direction of the NFC antenna assembly 100 . In other possible embodiments, at least part of the relay antenna radiator 11 and the first NFC antenna radiator 10 may be arranged opposite and coupled along the width direction of the NFC antenna assembly 100 .
  • the relay antenna radiator 11 and the first NFC antenna radiator 10 are spaced apart, and the distance between the relay antenna radiator 11 and the first NFC antenna radiator 10 is such that the relay antenna radiator 11 and the first NFC antenna radiator are 10 Capable of electrical coupling or electromagnetic coupling.
  • the orthographic projection of the relay antenna radiator 11 on the surface of the first NFC antenna radiator 10 covers at least part of the first NFC antenna radiator 10 .
  • the quality factor of the relay antenna radiator 11 can be used to represent the electromagnetic quantity representing the ratio of the energy in the resonant circuit formed by the relay antenna radiator 11 to the energy lost in each cycle.
  • the quality factor of the relay antenna radiator 11 is Q 1 ,
  • L 1 is the inductance of the relay antenna radiator 11 ; ⁇ is the angular frequency of the relay antenna radiator 11 ; R 1 is the resistance of the relay antenna radiator 11 .
  • is the magnetic permeability of the relay antenna radiator 11
  • N is the number of coil turns of the relay antenna radiator 11
  • S is the area surrounded by the coil of the relay antenna radiator 11
  • d is the diameter of the relay antenna radiator 11
  • L 1 is related to the width of the relay antenna radiator 11 , the magnetic permeability of the relay antenna radiator 11 and the spacing of the relay antenna radiator 11 .
  • R 1 is related to the resistivity of the relay antenna radiator 11 , the length of the relay antenna radiator 11 , and the cross-sectional area of the relay antenna radiator 11 .
  • the width of the relay antenna radiator 11, the spacing between the relay antenna radiators 11, the length of the relay antenna radiator 11, and the cross-sectional area of the relay antenna radiator 11, the radiation of the relay antenna is selected.
  • the quality factor of the relay antenna radiator 11 can be controlled by the material of the body 11 .
  • the quality factor of the relay antenna radiator 11 is greater than 1. In a possible embodiment, the quality factor of the relay antenna radiator 11 is greater than or equal to 10.
  • the gain of the relay antenna radiator 11 is A 1 ,
  • the relay antenna radiator 11 has no detuning, that is, the relay antenna radiator 11 works at the resonant frequency, and the detuning coefficient x 1 is 1 at this time.
  • the absolute value of A 1 is equal to the quality factor Q 1 . Therefore, when the quality factor Q 1 is greater than 1, the absolute value of A 1 is also greater than 1, so that the NFC signal forwarded by the relay antenna radiator 11 is enhanced compared to the NFC signal received by the relay antenna radiator 11 .
  • NFC signals have leakage, loss, etc. during the transmission process, and the relay antenna radiator 11 cannot be guaranteed to be in an ideal state. Therefore, when Q 1 is less than or equal to 1, the relay antenna radiator 11 cannot guarantee the NFC signal. amplification effect.
  • the NFC antenna assembly 100 provided in this application is provided with a relay antenna radiator 11. Since the relay antenna radiator 11 is coupled with the first NFC antenna radiator 10, the relay antenna radiator 11 can receive the emission from the first NFC antenna radiator 10.
  • the NFC signal is forwarded and forwarded, so the transmission path of the NFC signal can be increased, and the quality factor of the relay antenna radiator 11 is greater than 1, so that the relay antenna radiator 11 has the effect of amplifying the NFC signal, that is, the relay antenna radiator 11 forms a gain antenna radiator for transmitting NFC signals, thereby extending the transmission distance of NFC signals and improving the NFC performance of the NFC antenna assembly 100 .
  • FIG 4 is a schematic structural diagram of a terminal equipment component 300 provided by an embodiment of the present application.
  • the terminal device component 300 includes a terminal device 30, a device accessory 31 and an NFC antenna component 100.
  • the terminal device 30 may include one of a mobile phone, a tablet computer, a watch, a bracelet, etc. In the embodiment of this application, the terminal device 30 takes a mobile phone as an example.
  • the equipment accessories 31 may include one of a protective case, a protective film, a decorative pendant, a functional pull ring, a functional bracket, etc.
  • the protective case can protect the terminal device 30 from being damaged by falling.
  • the protective film serves as a display screen protector of the terminal device 30 and can protect the display screen of the terminal device 30 .
  • the equipment accessories 31 are installed outside the terminal equipment 30 .
  • the equipment accessory 31 takes a protective case as an example.
  • the equipment accessory 31 can be installed outside the terminal device 30 .
  • the NFC antenna assembly 100 includes a first NFC antenna radiator 10 and a relay antenna radiator 11 .
  • the first NFC antenna radiator 10 is used to transmit NFC signals.
  • the relay antenna radiator 11 is used to amplify and forward the NFC signal emitted by the first NFC antenna radiator 10 .
  • the first NFC antenna radiator 10 is provided in the terminal device 30 .
  • the relay antenna radiator 11 is provided in the equipment accessory 31 .
  • the terminal device 30 includes a motherboard.
  • the first NFC antenna radiator 10 is provided on the motherboard.
  • the first NFC antenna radiator 10 may be provided on the inner surface of the housing of the terminal device 30 .
  • the relay antenna radiator 11 is provided in the equipment accessory 31 .
  • the relay antenna radiator 11 is formed on the inner surface of the equipment accessory 31; or the relay antenna radiator 11 is formed on the outer surface of the equipment accessory 31; or the relay antenna radiator 11 is provided on the equipment accessory 31. inside the mezzanine.
  • the inner surface of the equipment accessory 31 faces the terminal device 30
  • the outer surface of the equipment accessory 31 faces away from the terminal device 30 .
  • the methods by which the relay antenna radiator 11 is provided on the equipment accessory 31 include but are not limited to printing, mounting, evaporation, laser, laser engraving, injection molding, etc.
  • the terminal device component 300 provided by this application includes an NFC antenna component 100. Since the first NFC antenna radiator 10 is used to transmit NFC signals, the relay antenna radiator 11 is used to receive the NFC signals emitted by the first NFC antenna radiator 10 and conduct forwarding, and the quality factor of the relay antenna radiator 11 is greater than 1, which amplifies and enhances the received NFC signal, so the transmission distance of the NFC signal can be extended and the NFC communication performance of the terminal equipment component 300 can be improved.
  • the first NFC antenna radiator 10 is provided in the terminal device 30, and the relay antenna radiator 11 is provided in the equipment accessory 31, so that the relay antenna radiator 11 does not occupy the internal space of the terminal device 30, thereby solving the problem of the first NFC
  • the size of the antenna radiator 10 is small due to the limitation of the internal space of the terminal device 30, the problem of insufficient NFC communication performance of the terminal device 30 is caused.
  • FIG. 5 is a schematic structural diagram of an electronic device 400 provided by an embodiment of the present application.
  • the electronic device 400 may be a mobile terminal such as a mobile phone, a tablet computer, or a vehicle-mounted computer; or a wearable device such as a watch or bracelet.
  • the electronic device 400 takes a mobile phone as an example.
  • Electronic device 400 includes housing 41 and NFC antenna assembly 100 .
  • the NFC antenna assembly 100 includes a first NFC antenna radiator 10 and a relay antenna radiator 11 .
  • the first NFC antenna radiator 10 is used to transmit NFC signals.
  • the relay antenna radiator 11 is used to amplify and forward the NFC signal emitted by the first NFC antenna radiator 10 .
  • the first NFC antenna radiator 10 is provided in the housing 41 .
  • the electronic device 400 includes a display screen 410, a middle frame 411 and a back cover 412.
  • the middle frame 411 and the back cover 412 can be integrally formed or connected as one.
  • the display screen 410 is arranged opposite to the back cover 412 and is connected to the side of the middle frame 411 away from the back cover 412 .
  • the display screen 410, the middle frame 411 and the back cover 412 form the housing 41 of the electronic device 400.
  • the internal space of the electronic device 400 is formed between the display screen 410 , the middle frame 411 and the back cover 412 .
  • the first NFC antenna radiator 10 is provided in the internal space of the electronic device 400 .
  • the relay antenna radiator 11 is provided in the internal space of the electronic device 400 , or the relay antenna radiator 11 is provided on the housing 41 of the electronic device 400 .
  • the relay antenna radiator 11 is disposed in the internal space of the electronic device 400, the first NFC antenna radiator 10, the relay antenna radiator 11 and the housing 41 can be arranged in sequence.
  • the relay antenna radiator 11 is formed on the housing 41 .
  • the relay antenna radiator 11 can be formed on the inner surface of the back cover 412, or the relay antenna radiator 11 can be formed on the outer surface of the back cover 412, or the relay antenna radiator 11 can be formed on the inner surface of the back cover 412.
  • the inner surface of the middle frame 411, or the relay antenna radiator 11 may be formed on the outer surface of the middle frame 411.
  • the relay antenna radiator 11 can also be provided on the inner surface of the display screen 410 , the outer surface of the display screen 410 , or between the film layers of the display screen 410 .
  • the methods by which the relay antenna radiator 11 is formed on the housing 41 include but are not limited to printing, mounting, evaporation, laser, laser engraving, injection molding, etc.
  • the housing 41 can be used as a carrier for the relay antenna radiator 11. There is no need to provide an independent carrier to carry the relay antenna radiator 11, which can reduce the number of components of the electronic device 400.
  • molding the relay antenna radiator 11 on the housing 41 makes the overall structure of the electronic device 400 simple and easy to implement.
  • the relay antenna radiator 11 can be an independent FPC antenna radiator or an LDS antenna radiator, and is installed in the internal space of the electronic device 400; in this case, the relay antenna radiator 11 can be It is carried on the casing, motherboard or motherboard bracket of the electronic device 400 .
  • the housing 41 includes exterior decorative elements.
  • the rear cover 412 includes an appearance decorative part as an example.
  • the middle frame 411 may also include appearance decoration parts.
  • the appearance decoration parts may be trademarks, decorative patterns, etc. provided on the back cover 412 .
  • At least part of the exterior decorative component forms the relay antenna radiator 11 .
  • the relay antenna radiator 11 reuses the appearance decorative parts on the housing 41 of the electronic device 400 .
  • the material of the exterior decoration parts can be metal, alloy, carbon fiber, composite conductive material, etc.
  • the relay antenna radiator 11 not only forwards the NFC signal emitted by the first NFC antenna radiator 10 , but also has the effect of decorating the appearance, and the relay antenna radiator 11 does not occupy the internal space of the electronic device 400 , can overcome the problem of insufficient NFC communication performance of the electronic device 400 when the size of the first NFC antenna radiator 10 is limited by the internal space of the electronic device 400 .
  • the electronic device 400 further includes a camera decoration.
  • the camera decoration part penetrates the back cover 412 of the electronic device 400 and protrudes from the back cover 412 .
  • At least part of the camera trim forms the relay antenna radiator 11 .
  • the relay antenna radiator 11 reuses the camera decoration of the electronic device 400 .
  • the material of the camera decoration part can be metal, alloy, carbon fiber, composite conductive material, etc.
  • the relay antenna radiator 11 reuses the camera decoration, so that the camera decoration not only forwards the NFC signal emitted by the first NFC antenna radiator 10, but also has the effect of decorating and protecting the camera.
  • the antenna radiator 11 does not occupy the internal space of the electronic device 400, which can overcome the problem of insufficient NFC communication performance of the electronic device 400 when the first NFC antenna radiator 10 is small due to the limitation of the internal space of the electronic device 400.
  • the electronic device 400 further includes a motherboard bracket.
  • the motherboard bracket is used to support and fix the motherboard.
  • the motherboard bracket is located in the internal space of the electronic device 400 .
  • the motherboard bracket can be made of metal, alloy, carbon fiber, composite conductive material, etc. At least part of the motherboard bracket forms the relay antenna radiator 11 . In other words, the relay antenna radiator 11 reuses the mainboard bracket of the electronic device 400 .
  • the relay antenna radiator 11 reuses the mainboard bracket, so that the mainboard bracket not only forwards the NFC signal emitted by the first NFC antenna radiator 10, but also supports and fixes the mainboard, and the relay antenna radiates
  • the body 11 reuses the motherboard bracket of the electronic device 400 without adding components of the electronic device 400, which can solve the problem of NFC failure of the electronic device 400 when the first NFC antenna radiator 10 is small in size due to the limitation of the internal space of the electronic device 400. The problem of insufficient communication performance.
  • the electronic device 400 provided by this application includes an NFC antenna assembly 100. Since the first NFC antenna radiator 10 is used to transmit NFC signals, the relay antenna radiator 11 is used to receive and forward the NFC signals emitted by the first NFC antenna radiator 10. , and the quality factor of the relay antenna radiator 11 is greater than 1, which amplifies and enhances the received NFC signal. Therefore, the transmission distance of the NFC signal can be extended and the NFC communication performance of the electronic device 400 can be improved.
  • the first NFC antenna radiator 10 is disposed in the electronic device 400, and the relay antenna radiator 11 is disposed on the housing 41 of the electronic device 400, so that the relay antenna radiator 11 occupies less internal space of the electronic device 400, or is complex.
  • the relay antenna radiator 11 is integrated with the exterior decoration parts, camera decoration parts, and motherboard bracket of the electronic device 400 without adding components of the electronic device 400, thereby solving the problem of the second problem.
  • the size of the NFC antenna radiator 10 is small due to the limitation of the internal space of the electronic device 400, the NFC communication performance of the electronic device 400 is insufficient.
  • the following embodiments describe in detail the NFC antenna assembly 100 provided by the present application.
  • the first NFC antenna radiator 10 and the relay antenna radiator 11 are both disposed in the internal space of the electronic device 400 .
  • the NFC antenna assembly 100 also includes a matching circuit 12 .
  • the matching circuit 12 may include one or more of a series capacitor, a series inductor, a parallel capacitor, a parallel inductor, and the like.
  • the matching circuit 12 is used to adjust the operating frequency of the relay antenna radiator 11 so that the relay antenna radiator 11 is in a preset resonance mode.
  • the detuning coefficient x 1 of the relay antenna radiator 11 can be equal to or close to 1, thus facilitating When the quality factor Q 1 of the relay antenna radiator 11 is constant, the gain of the relay antenna radiator 11 is increased.
  • the operating frequency of the relay antenna radiator 11 when in the preset resonance mode is 13.56 MHz or close to 13.56 MHz.
  • the NFC antenna assembly 100 includes at least two matching circuits 12 .
  • One end of at least one matching circuit 12 is electrically connected to one end of the relay antenna radiator 11, and the other end is grounded; one end of the at least one matching circuit 12 is electrically connected to the other end of the relay antenna radiator 11, and the other end is grounded.
  • the NFC antenna component 100 includes two matching circuits 12 as an example.
  • the two matching circuits 12 can be electrically connected between both ends of the relay antenna radiator 11 and the middle frame 411 of the electronic device 400, wherein the middle frame 411 of the electronic device 400 is grounded; or, two matching circuits 12
  • the circuit 12 may be electrically connected between two ends of the relay antenna radiator 11 and the reference ground of the mainboard of the electronic device 400 .
  • this embodiment only needs to design the matching circuit 12 between the relay antenna radiator 11 and the reference ground of the electronic device 400. That is, The NFC performance of the electronic device 400 can be improved and less internal space of the electronic device 400 is occupied.
  • the relay antenna radiator 11 includes an annular wire winding 110 .
  • the wire winding 110 includes a first free end 110a and a second free end 110b.
  • the “free end” can be understood as the end point of the relay antenna radiator 11 that is not physically connected to other components.
  • the first free end 110a and the second free end 110b are shown in FIG. 9 .
  • One of the first free end 110 a and the second free end 110 b is the starting end of the relay antenna radiator 11
  • the other one of the first free end 110 a and the second free end 110 b is the starting end of the relay antenna radiator 11 Termination end.
  • One end of the matching circuit 12 is electrically connected to the first free end 110a, and the other end of the matching circuit 12 is electrically connected to the second free end 110b.
  • the starting end of the wire winding 110 may form the first free end 110a
  • the terminal end of the wire winding 110 may form the second free end 110b
  • the matching circuit 12 may be electrically connected to the starting end of the wire winding 110 and the terminal end of the wire winding 110. between.
  • a notch can be provided on the appearance decoration part to form the first free end 110a and the second free end 110b
  • matching The circuit 12 may be electrically connected between the notch breakpoints of the exterior decorative component. This embodiment only needs to design the matching circuit 12 between the two ends of the relay antenna radiator 11 to improve the NFC performance of the electronic device 400 and also takes up less internal space of the electronic device 400 .
  • the relay antenna radiator 11 includes a first sub-antenna radiator, a second sub-antenna radiator and at least one parasitic capacitance.
  • the first sub-antenna radiator and the second sub-antenna radiator are arranged at intervals, and the parasitic capacitance is electrically connected between the first sub-antenna radiator and the second sub-antenna radiator.
  • the parasitic capacitance is used to make the first sub-antenna radiator and the second sub-antenna radiator be in a preset resonance mode. This application does not specifically limit the number of parasitic capacitances.
  • the first sub-antenna radiator and the second sub-antenna radiator can be understood as conductor segments arranged at intervals in the wire winding 110.
  • the relay antenna radiator 11 since the relay antenna radiator 11 includes parasitic capacitance, the first sub-antenna radiator and the second sub-antenna radiator can be in the preset resonance mode, so there is no need to set up other matching circuits to tune the relay antenna radiator. 11. While improving NFC performance, it can further reduce structural components and reduce costs.
  • some relay antenna radiators 11 are arranged opposite and coupled to the first NFC antenna radiator 10 , and another part of the relay antenna radiators 11 are offset from the first NFC antenna radiator 10 .
  • the orthographic projection of the relay antenna radiator 11 on the surface of the first NFC antenna radiator 10 partially overlaps with the first NFC antenna radiator 10 .
  • the partial relay antenna radiator 11 and the first NFC antenna radiator 10 are arranged oppositely along the thickness direction Z of the electronic device 400, and the spacing between the partial relay antenna radiator 11 and the first NFC antenna radiator 10 is So that part of the relay antenna radiator 11 and the first NFC antenna radiator 10 can be coupled, and another part of the relay antenna radiator 11 and the first NFC antenna radiator 10 are disposed offset along the thickness direction Z of the electronic device 400, that is, in another part
  • the relay antenna radiator 11 and the first NFC antenna radiator 10 are not coupled or have little coupling, and the impact on the overall performance of the NFC antenna assembly 100 is small and can be ignored; alternatively, part of the relay antenna radiator 11 and the first NFC antenna radiator 10 are relatively arranged along the length direction , another part of the relay antenna radiator 11 and the first NFC antenna radiator 10 are misaligned along the length direction less, the impact on the overall performance of the NFC antenna assembly 100 is small and can be ignored; alternatively, part of the relay antenna radiator 11 and the first NFC antenna radiator 10 are arranged oppositely along the width
  • the area of the relay antenna radiator 11 may be greater than or equal to the area of the first NFC antenna radiator 10 .
  • the number of pairs of relay antenna radiators 11 can be reduced.
  • the influence of the NFC signal emitted by the first NFC antenna radiator 10 reduces the degree of detuning between the operating frequency and the resonant frequency of the first NFC antenna radiator 10 so that the detuning coefficient of the first NFC antenna radiator 10 can be equal to or close to 1.
  • the detuning coefficient of the relay antenna radiator 11 is greater than or equal to 0.5 and less than or equal to 1.
  • the detuning coefficient of the relay antenna radiator 11 is x 1 ,
  • the detuning coefficient of the first NFC antenna radiator 10 may also be greater than or equal to 0.5 and less than or equal to 1.
  • the detuning coefficient of the first NFC antenna radiator 10 is x 2 ,
  • the detuning coefficient of the second NFC antenna radiator 20 may also be greater than or equal to 0.5 and less than or equal to 1.
  • the detuning coefficient of the second NFC antenna radiator 20 is x 3 ,
  • the number of relay antenna radiators 11 may be one or more. In a possible embodiment, as shown in Figure 11, the number of relay antenna radiators 11 is one.
  • the first NFC antenna radiator 10 , the relay antenna radiator 11 and the second NFC antenna radiator 20 form a three-level NFC antenna system 200 .
  • the coupling index of the NFC antenna system 200 is n,
  • k is the coupling coefficient; the coupling coefficient k is used to describe the tightness of the coupling between the two antenna radiators.
  • the ratio of the actual absolute value of mutual inductance between the two antenna radiators and its maximum limit value is defined as the coupling coefficient k.
  • the coupling coefficient k is related to the shape of the antenna radiator, distance, number of turns, line width and line spacing, etc.
  • a 1 relays the gain of the antenna radiator 11 ;
  • a 2 is the gain of the first NFC antenna radiator 10 ;
  • a 3 is the gain of the second NFC antenna radiator 20 .
  • k is the coupling coefficient
  • Q 1 is the quality factor of the relay antenna radiator 11
  • Q 2 is the quality factor of the first NFC antenna radiator 10
  • Q 3 is the quality factor of the second NFC antenna radiator 20
  • coupling index n is used to characterize the coupling coefficient of the three-level NFC antenna system 200 based on the coupling coefficient and combined with the tuning and impedance elements, which is also called the performance factor.
  • the quality factor of the first NFC antenna radiator is greater than 1.
  • the quality factor of the second NFC antenna radiator is greater than 1. It can be seen from the above formula that when the quality factor Q 1 of the relay antenna radiator 11 , the quality factor Q 2 of the first NFC antenna radiator 10 , and the quality factor Q 3 of the second NFC antenna radiator 20 are all greater than 1,
  • the coupling index n is greater than the coupling coefficient k, that is, the coupling effect between the relay antenna radiator 11 and the first NFC antenna radiator 10 is better, and the coupling effect between the relay antenna radiator 11 and the second NFC antenna radiator 20 is better.
  • the relay antenna radiator 11 can be used as a gain antenna of the three-level NFC antenna system 200, so that the performance of the first NFC antenna radiator 10 and the second NFC antenna radiator 20 in transmitting NFC signals and/or feedback signals is improved.
  • the relay antenna radiator 11 can also be seen that when the quality factor Q of the first NFC antenna radiator 10 2.
  • the quality factor Q 3 of the second NFC antenna radiator 20 is constant, the closer the detuning coefficient of the first NFC antenna radiator 10 is to 1, and the closer the detuning coefficient of the second NFC antenna radiator 20 is to 1, then the NFC antenna The better the overall gain of the component 100 and the NFC antenna system 200 is, the more obvious the improvement in NFC performance will be. Therefore, by arranging part of the relay antenna radiators 11 and the first NFC antenna radiator 10 to be oppositely arranged and coupled, and by disposing another part of the relay antenna radiators 11 and the first NFC antenna radiator 10 in a misaligned position, the number of relay antenna radiators can be reduced.
  • the influence on the NFC signal emitted by the first NFC antenna radiator 10 is to reduce the detuning degree of the operating frequency and the resonant frequency of the first NFC antenna radiator 10 so that the detuning coefficient of the first NFC antenna radiator 10 can be equal to or close to 1. It can improve the overall gain of the NFC antenna assembly 100 and the NFC antenna system 200 and improve NFC performance.
  • part of the relay antenna radiator 11 and the second NFC antenna radiator 20 may be arranged oppositely and coupled, and another part of the relay antenna radiator 11 and the second NFC antenna radiator 20 may be arranged in a staggered position.
  • the influence of the relay antenna radiator 11 on the feedback signal transmitted by the second NFC antenna radiator 20 can be reduced, and the degree of detuning between the operating frequency and the resonant frequency of the second NFC antenna radiator 20 can be reduced, so that the second NFC antenna radiator can A detuning factor of 20 can be equal to or close to 1.
  • the quality factors of the relay antenna radiators 11 of the three-level NFC antenna system 200 are all greater than 1, the quality factors of the first NFC antenna radiators 10 are all greater than 1, and the quality factors of the second NFC antenna radiators 20 are all greater than 1. The factors are all greater than 1, and the relay antenna radiator 11, the first NFC antenna radiator 10 and the second NFC antenna radiator 20 are all in the preset resonance mode.
  • the number of relay antenna radiators 11 may be multiple.
  • the sum of the number of relay antenna radiators 11 , the number of first NFC antenna radiators 10 , and the number of second NFC antenna radiators 20 is taken as N as an example.
  • N is greater than 3 and is a positive integer.
  • the number of the first NFC antenna radiator 10 and the number of the second NFC antenna radiator 20 are both one.
  • the first NFC antenna radiator 10 , the relay antenna radiator 11 and the second NFC antenna radiator 20 form an N-level NFC antenna system 200 .
  • the coupling index of the NFC antenna system 200 is n,
  • k is the coupling coefficient
  • a 1 to A N-2 are the gains of the N-2 relay antenna radiators 11 respectively
  • a N-1 is the gain of the first NFC antenna radiator 10
  • a N is the second NFC The gain of the antenna radiator 20.
  • x 1 ,...x N-2 are detuning coefficients of N-2 relay antenna radiators 11 respectively; x N-1 is the detuning coefficient of the first NFC antenna radiator 10; x N is the second NFC Detuning coefficient of the antenna radiator 20.
  • k is the coupling coefficient
  • Q 1 to Q N-2 are the quality factors of the N-2 relay antenna radiators 11 respectively
  • Q N-1 is the quality factor of the first NFC antenna radiator 10
  • Q N is the quality factor of the first NFC antenna radiator 10.
  • the quality factor of the NFC antenna radiator 20; the coupling index n is used to characterize the coupling coefficient of the N-level NFC antenna system 200 based on the coupling coefficient, combined with tuning and impedance elements, also called the performance factor.
  • the coupling index n is greater than the coupling coefficient k, that is, the multiple relay antenna radiators 11 and the first NFC antenna radiator 10
  • the coupling effect between the multiple relay antenna radiators 11 and the second NFC antenna radiator 20 is also good.
  • the relay antenna radiator 11 can be used as a gain antenna for the N-level NFC antenna system 200 , so that the performance of the first NFC antenna radiator 10 and the second NFC antenna radiator 20 in transmitting NFC signals and/or feedback signals is improved.
  • the quality factors of the N-2 relay antenna radiators 11 of the N-level NFC antenna system 200 are all greater than 1, the quality factors of the first NFC antenna radiators 10 are all greater than 1, and the second NFC antenna radiation The quality factors of the body 20 are all greater than 1, and the relay antenna radiator 11, the first NFC antenna radiator 10 and the second NFC antenna radiator 20 are all in the preset resonance mode.
  • the NFC antenna assembly 100 further includes multiple matching circuits 12 corresponding to the multiple relay antenna radiators 11 .
  • the number of matching circuits 12 of the NFC antenna assembly 100 and the number of relay antenna radiators 11 may be the same.
  • one end of each matching circuit 12 is electrically connected to the corresponding relay antenna radiator 11, and the other end of each matching circuit 12 is grounded; or, each relay antenna radiator 11 includes a first free end 110a and a first free end 110a.
  • Two free ends 110b, one end of each matching circuit 12 is electrically connected to the first free end 110a of the corresponding relay antenna radiator 11, and the other end of each matching circuit 12 is electrically connected to the second free end 110a of the corresponding relay antenna radiator 11. Free end 110b.
  • the number of relay antenna radiators 11 is three, which are respectively designated as the first relay antenna radiator 112, the second relay antenna radiator 113 and the third relay antenna radiator 113.
  • the NFC antenna assembly 100 also includes three matching circuits 12 corresponding to the three relay antenna radiators 11, which are respectively designated as the first matching circuit 120, the second matching circuit 121 and the third matching circuit 122.
  • One end of the first matching circuit 120 is electrically connected to the first relay antenna radiator 112, and the other end of the first matching circuit 120 is grounded.
  • the first matching circuit 120 is used to adjust the operating frequency of the first relay antenna radiator 112 so that the first relay antenna radiator 112 is in a preset resonance mode.
  • the first matching circuit 120 is used to adjust the operating frequency of the first relay antenna radiator 112 to control the detuning coefficient of the first relay antenna radiator 112 to be greater than or equal to 0.5 and less than or equal to 1, or close to 1.
  • One end of the second matching circuit 121 is electrically connected to the second relay antenna radiator 113, and the other end of the second matching circuit 121 is grounded.
  • the second matching circuit 121 is used to adjust the operating frequency of the first relay antenna radiator 112 so that the second relay antenna radiator 113 is in a preset resonance mode.
  • the second matching circuit 121 is used to adjust the operating frequency of the second relay antenna radiator 113 to control the detuning coefficient of the second relay antenna radiator 113 to be greater than or equal to 0.5 and less than or equal to 1, or close to 1.
  • One end of the third matching circuit 122 is electrically connected to the third relay antenna radiator 114, and the other end of the third matching circuit 122 is grounded.
  • the third matching circuit 122 is used to adjust the operating frequency of the third relay antenna radiator 114 so that the third relay antenna radiator 114 is in a preset resonance mode.
  • the third matching circuit 122 is used to adjust the operating frequency of the third relay antenna radiator 114 to control the detuning coefficient of the third relay antenna radiator 114 to be greater than or equal to 0.5 and less than or equal to 1, or close to 1.
  • the relay antenna radiator 11 itself has a good gain effect on the NFC signal, there is no need to tune the relay antenna radiator 11 and there is no need to set up a matching circuit.
  • the number of relay antenna radiators 11 may be three, which are respectively noted as the fourth relay antenna radiator, the fifth relay antenna radiator and the sixth relay antenna radiator.
  • the NFC antenna assembly 100 also includes three matching circuits 12 corresponding to the three relay antenna radiators 11, which are respectively noted as a fourth matching circuit, a fifth matching circuit and a sixth matching circuit.
  • One end of the fourth matching circuit is electrically connected to the first free end 110a of the fourth relay antenna radiator, and the other end of the fourth matching circuit is electrically connected to the second free end 110b of the fourth relay antenna radiator.
  • the fourth matching circuit is used to adjust the operating frequency of the fourth relay antenna radiator so that the fourth relay antenna radiator is in a preset resonance mode.
  • the fourth matching circuit is used to adjust the operating frequency of the fourth relay antenna radiator to control the detuning coefficient of the fourth relay antenna radiator to be greater than or equal to 0.5 and less than or equal to 1, or close to 1.
  • One end of the fifth matching circuit is electrically connected to the first free end 110a of the fifth relay antenna radiator, and the other end of the fifth matching circuit is electrically connected to the second free end 110b of the fifth relay antenna radiator.
  • the fifth matching circuit is used to adjust the operating frequency of the fifth relay antenna radiator so that the fifth relay antenna radiator is in a preset resonance mode.
  • the fifth matching circuit is used to adjust the operating frequency of the fifth relay antenna radiator to control the detuning coefficient of the fifth relay antenna radiator to be greater than or equal to 0.5 and less than or equal to 1, or close to 1.
  • One end of the sixth matching circuit is electrically connected to the first free end 110a of the sixth relay antenna radiator, and the other end of the sixth matching circuit is electrically connected to the second free end 110b of the sixth relay antenna radiator.
  • the sixth matching circuit is used to adjust the operating frequency of the sixth relay antenna radiator so that the sixth relay antenna radiator is in a preset resonance mode.
  • the sixth matching circuit is used to adjust the operating frequency of the sixth relay antenna radiator to control the detuning coefficient of the sixth relay antenna radiator to be greater than or equal to 0.5 and less than or equal to 1, or close to 1.
  • the multiple relay antenna radiators 11 may be located on different sides of the first NFC antenna radiator 10; or, the multiple relay antenna radiators 11 may be located on the first NFC antenna radiator 10. the same side of the NFC antenna radiator 10 .
  • the number of relay antenna radiators 11 is three, and the three relay antenna radiators 11 are all located at the first NFC antenna radiator 10 facing the second NFC antenna radiator. 20, or, as shown in Figure 14, the number of relay antenna radiators 11 is three, and the three relay antenna radiators 11 are located on the first NFC antenna radiator 10 away from the second NFC antenna radiator 20. one side.
  • the number of relay antenna radiators 11 is three, and two of the three relay antenna radiators 11 are located at the first NFC antenna radiator.
  • the side of the body 10 faces the second NFC antenna radiator 20, and the other relay antenna radiator 11 is located on the side of the first NFC antenna radiator 10 facing away from the second NFC antenna radiator 20; or, as shown in Figure 16,
  • the number of relay antenna radiators 11 is three.
  • one relay antenna radiator 11 is located on the side of the first NFC antenna radiator 10 facing the second NFC antenna radiator 20, and the other two The relay antenna radiator 11 is located on the side of the first NFC antenna radiator 10 away from the second NFC antenna radiator 20 .
  • the NFC antenna assembly 100 also includes an NFC radio frequency chip 13.
  • the NFC radio frequency chip 13 is electrically connected to the first NFC antenna radiator 10.
  • the NFC radio frequency chip 13 is used to generate radio frequency signals and transmit them to the first NFC antenna.
  • Radiator 10, the first NFC antenna radiator 10 emits NFC signals according to radio frequency signals.
  • the NFC radio frequency chip 13 and the relay antenna radiator 11 are not connected.
  • the NFC antenna assembly 100 provided in this application is provided with a relay antenna radiator 11. Since the relay antenna radiator 11 is coupled with the first NFC antenna radiator 10, the relay antenna radiator 11 can receive the emissions from the first NFC antenna radiator 10.
  • the NFC signal is forwarded and forwarded, so the transmission path of the NFC signal can be increased, and the quality factor of the relay antenna radiator 11 is greater than 1, so that the relay antenna radiator 11 has the effect of amplifying the NFC signal, that is, the relay antenna radiator 11 forms a gain antenna radiator for transmitting NFC signals, thereby extending the transmission distance of NFC signals and improving the NFC performance of the NFC antenna assembly 100 .
  • the electronic device 400, terminal device assembly 300 and NFC antenna system 200 provided by this application include the NFC antenna assembly 100, and therefore have better NFC performance.

Abstract

本申请提供了一种NFC天线组件及系统、电子设备、终端设备组件。NFC天线组件包括NFC射频芯片、第一NFC天线辐射体和中继天线辐射体。第一NFC天线辐射体用于发射NFC信号。中继天线辐射体与第一NFC天线辐射体耦合。中继天线辐射体用于对NFC信号进行放大。NFC天线系统包括第二NFC天线辐射体及NFC天线组件。电子设备包括外壳及NFC天线组件。终端设备组件包括终端设备、设备配件及NFC天线组件,设备配件装设于终端设备外,第一NFC天线辐射体设于终端设备内,中继天线辐射体设于设备配件。本申请提供的NFC天线组件及系统、电子设备、终端设备组件的NFC性能较好。

Description

NFC天线组件及系统、电子设备、终端设备组件
本申请要求于2022年06月28日提交至中国专利局,申请号为202210745406.7,申请名称为“NFC天线组件及系统、电子设备、终端设备组件”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及NFC技术领域,具体涉及一种NFC天线组件及系统、电子设备、终端设备组件。
背景技术
近场通信(Near Field Communication,NFC)是一种新兴的技术,使用了NFC技术的设备可以在彼此靠近的情况下进行数据交换,是由非接触式射频识别(RFID)及互连互通技术整合演变而来的,通过在单一芯片上集成感应式读卡器、感应式卡片和点对点通信的功能,利用移动终端实现移动支付、电子票务、门禁、移动身份识别、防伪等应用。相关技术中,受到设备空间的限制,NFC天线的尺寸缩减,导致设备的NFC性能不足。
发明内容
本申请提供了一种能够提高NFC性能的NFC天线组件及系统、电子设备、终端设备组件。
第一方面,本申请提供了一种NFC天线组件,包括:
NFC射频芯片;
第一NFC天线辐射体,用于在所述NFC射频芯片的激励下发射NFC信号;
中继天线辐射体,所述中继天线辐射体与所述第一NFC天线辐射体间隔设置,且所述中继天线辐射体在所述第一NFC天线辐射体的所在面的正投影覆盖至少部分所述第一NFC天线辐射体,所述中继天线辐射体与所述第一NFC天线辐射体耦合,所述中继天线辐射体用于对所述NFC信号进行放大后转发。
第二方面,本申请还提供了一种NFC天线系统,包括第二NFC天线辐射体及所述的NFC天线组件,所述第二NFC天线辐射体用于接收所述中继天线辐射体放大的NFC信号。
第三方面,本申请还提供了一种电子设备,包括外壳及所述的NFC天线组件,所述第一NFC天线辐射体设于所述外壳内。
第四方面,本申请还提供了一种终端设备组件,包括设备配件、终端设备及所述的NFC天线组件,所述设备配件装设于所述终端设备外,所述第一NFC天线辐射体设于所述终端设备内,所述中继天线辐射体设于所述设备配件上。
本申请提供的NFC天线组件通过设置中继天线辐射体,由于中继天线辐射体与第一NFC天线辐射体耦合,中继天线辐射体能够接收第一NFC天线辐射体发射的NFC信号进行放大并转发,因此可增加NFC信号的传输路径,使得中继天线辐射体形成传输NFC信号的增益天线辐射体,从而可延长NFC信号的传输距离,提高NFC天线组件的NFC性能。本申请提供的电子设备、终端设备组件及NFC天线系统包括所述的NFC天线组件,因此具有较好的NFC性能。
附图说明
为了更清楚地说明本申请实施例的技术方案,下面将对实施例中所需要使用的附图作简单地介绍。
图1为本申请实施例提供的一种NFC天线系统的结构示意图;
图2为图1所示NFC天线系统的中继天线辐射体位于第一NFC天线辐射体背离第二NFC天线辐射体的一侧的结构示意图;
图3为本申请实施例提供的一种NFC天线组件的结构示意图;
图4为本申请实施例提供的一种终端设备组件的结构示意图;
图5为本申请实施例提供的一种电子设备的结构示意图;
图6为图5所示电子设备的分解示意图;
图7为图3所示NFC天线组件包括第一NFC天线辐射体、中继天线辐射体和匹配电路的结构示意图;
图8为图7所示NFC天线组件的匹配电路一端电连接中继天线辐射体,另一端接地的结构示意图;
图9为图7所示NFC天线组件的中继天线辐射体包括呈环形的导线绕组的结构示意图;
图10为图7所示NFC天线组件的中继天线辐射体与第一NFC天线辐射体部分错位设置的结构示意图;
图11为图7所示NFC天线组件包括一个中继天线辐射体的结构示意图;
图12为图7所示NFC天线组件包括三个中继天线辐射体的结构示意图;
图13为图12所示NFC天线组件的三个中继天线辐射体位于第一NFC天线辐射体朝向第二NFC天线辐射体的一侧的结构示意图;
图14为图12所示NFC天线组件的三个中继天线辐射体位于第一NFC天线辐射体背离第二NFC天线辐射体的一侧的结构示意图;
图15为图12所示NFC天线组件的三个中继天线辐射体中两个中继天线辐射体位于第一NFC天线辐射体朝向第二NFC天线辐射体的一侧,另一个中继天线辐射体位于第一NFC天线辐射体背离第二NFC天线辐射体的一侧的结构示意图;
图16为图12所示NFC天线组件的三个中继天线辐射体中两个中继天线辐射体位于第一NFC天线辐射体背离第二NFC天线辐射体的一侧,另一个中继天线辐射体位于第一NFC天线辐射体朝向第二NFC天线辐射体的一侧的结构示意图;
图17为图11所示NFC天线组件还包括NFC射频芯片的结构示意图。
具体实施方式
下面将结合附图,对本申请的技术方案进行清楚、完整地描述。显然,本申请所描述的实施例仅仅是一部分实施例,而不是全部的实施例。基于本申请提供的实施例,本领域普通技术人员在没有付出创造性劳动的前提下所获得的所有其他实施例,都属于本申请的保护范围。
在本申请中提及“实施例”或“实施方式”意味着,结合实施例或实施方式所描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的、独立的或备选的实施例。本领域技术人员可以显式地和隐式地理解的是,本申请所描述的实施例可以与其它实施例相结合。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如:包含了一个或多个零部件的组件或设备没有限定于已列出的一个或多个零部件,而是可选地还包括没有列出的但所示例的产品固有的一个或多个零部件,或者基于所说明的功能其应具有的一个或多个零部件。
如图1所示,图1为本申请实施例提供的一种NFC天线系统200的结构示意图。NFC天线系统200包括第二NFC天线辐射体20及NFC天线组件100。NFC天线组件100包括第一NFC天线辐射体10和中继天线辐射体11。第一NFC天线辐射体10用于发射NFC信号。第二NFC天线辐射体20用于接收NFC信号。中继天线辐射体11用于对第一NFC天线辐射体10发射的NFC信号进行放大并转发。
在一种可能的实施例中,第一NFC天线辐射体10作为NFC天线系统200的发射端,第二NFC天线辐射体20作为NFC天线系统200的接收端。可以理解的,第一NFC天线辐射体10可以是用于支持发射天线信号的辐射体或支持收发天线信号的辐射体。第二NFC天线辐射体20可以是用于支持接收天线信号的辐射体或支持收发天线信号的辐射体。在一种应用 场景中,第一NFC天线辐射体10用于支持NFC信号的发射,中继天线辐射体11用于接收第一NFC天线辐射体10发射的NFC信号,并将接收到的NFC信号转发至第二NFC天线辐射体20。在另一种应用场景中,第一NFC天线辐射体10发射NFC信号,中继天线辐射体11接收第一NFC天线辐射体10发射的部分NFC信号,并将接收到的部分NFC信号转发至第二NFC天线辐射体20,第一NFC天线辐射体10发射的另一部分NFC信号可不通过中继天线辐射体11的转发而直接传输至第二NFC天线辐射体20。
当然,在其他实施例中,当第一NFC天线辐射体10、第二NFC天线辐射体20皆为收发天线辐射体时,第一NFC天线辐射体10可以作为NFC天线系统200的接收端,第二NFC天线辐射体20可以作为NFC天线系统200的发射端。在一种应用场景中,第二NFC天线辐射体20接收到的第一NFC天线辐射体10发射的NFC信号之后,产生反馈信号,中继天线辐射体11还可以接收第二NFC天线辐射体20发射的反馈信号,并将接收到的反馈信号转发至第一NFC天线辐射体10。在另一种应用场景中,第二NFC天线辐射体20接收到的第一NFC天线辐射体10发射的NFC信号之后,产生反馈信号,中继天线辐射体11还可以接收第二NFC天线辐射体20发射的部分反馈信号,并将接收到的部分反馈信号转发至第一NFC天线辐射体10,第二NFC天线辐射体20发射的另一部分反馈信号可不通过中继天线辐射体11的转发而直接传输至第一NFC天线辐射体10。
其中,第二NFC天线辐射体20可以设于能够支持NFC通信的门禁刷卡机、公交售票机、检票机、移动终端设备30等上。NFC天线组件100的第一NFC天线辐射体10和中继天线辐射体11可以共同设于手机、平板电脑、手表、手环等设备上;或者,NFC天线组件100的第一NFC天线辐射体10可以设于手机、平板电脑、手表、手环等设备上,NFC天线组件100的中继天线辐射体11可以设于手机、平板电脑、手表、手环等设备的对应配件上。在一种可能的实施例中,如图1所示,中继天线辐射体11设于第一NFC天线辐射体10朝向第二NFC天线辐射体20的一侧。在另一种可能的实施例中,如图2所示,中继天线辐射体11可以设于第一NFC天线辐射体10背离第二NFC天线辐射体20的一侧。
第一NFC天线辐射体10、中继天线辐射体11、第二NFC天线辐射体20皆为导体。可选的,第一NFC天线辐射体10、中继天线辐射体11、第二NFC天线辐射体20皆可以包括呈环形的导线绕组。换言之,第一NFC天线辐射体10、中继天线辐射体11、第二NFC天线辐射体20皆可以为线圈天线辐射体。举例而言,第一NFC天线辐射体10的形状、中继天线辐射体11的形状、第二NFC天线辐射体20的形状也可以为圆形、方形、矩形、三角形、其他多边形及各种异形等。第一NFC天线辐射体10的材质、中继天线辐射体11的材质及第二NFC天线辐射体20的材质可以相同也可以不同。可选的,第一NFC天线辐射体10的材质可以是金属、合金、复合金属、复合型高分子导电材料等。中继天线辐射体11的材质可以是金属、合金、复合金属、复合型高分子导电材料等。第二NFC天线辐射体20的材质可以是金属、合金、复合金属、复合型高分子导电材料等。举例而言,第一NFC天线辐射体10的材质可以是铜、银、铜合金、铝合金、碳纤维、石墨烯、导电塑料等。中继天线辐射体11的材质可以是铜、银、铜合金、铝合金、碳纤维、石墨烯、导电塑料等。第二NFC天线辐射体20的材质可以是铜、银、铜合金、铝合金、碳纤维、石墨烯、导电塑料等。
本申请提供的NFC天线系统200通过第一NFC天线辐射体10发射NFC信号,第二NFC天线辐射体20接收NFC信号,中继天线辐射体11接收第一NFC天线辐射体10发射NFC信号并进行转发,由于中继天线辐射体11的品质因数大于1,对于所接收的NFC信号具有放大、增强的作用,因此可以延长NFC信号的传输距离,提升第一NFC天线辐射体10与第二NFC天线辐射体20之间的NFC通信性能。此外,第二NFC天线辐射体20根据接收到的NFC信号发射反馈信号时,中继天线辐射体11还可以接收第二NFC天线辐射体20发射的反馈信号并进行转发,由于中继天线辐射体11的品质因数大于1,对于所接收的反馈信号同样具有放大、增强的作用,因此可以延长反馈信号的传输距离,提升第一NFC天线辐射体10与第二NFC天线辐射体20之间的NFC通信性能。
如图3所示,图3为本申请实施例提供的一种NFC天线组件100的结构示意图。NFC 天线组件100包括第一NFC天线辐射体10和中继天线辐射体11。
第一NFC天线辐射体10用于发射NFC信号。第一NFC天线辐射体10发射的NFC信号的频率可以包括13.56MHz。第一NFC天线辐射体10的形状可以为圆形、方形、矩形、三角形、其他多边形及各种异形等。第一NFC天线辐射体10的材质可以是金属、合金、复合金属、复合型高分子导电材料等。第一NFC天线辐射体10可以包括呈环形的导线绕组。换言之,第一NFC天线辐射体10可以是线圈天线辐射体。
中继天线辐射体11与第一NFC天线辐射体10耦合。中继天线辐射体11的形状可以为圆形、方形、矩形、三角形、其他多边形及各种异形等。中继天线辐射体11的材质可以是金属、合金、复合金属、复合型高分子导电材料等。中继天线辐射体11可以包括呈环形的导线绕组。换言之,中继天线辐射体11可以是线圈天线辐射体。中继天线辐射体11的形状可以与第一NFC天线辐射体10的形状相同,也可以不同。中继天线辐射体11的材质可以与第一NFC天线辐射体10的材质相同,也可以不同。在一种可能的实施例中,至少部分中继天线辐射体11与第一NFC天线辐射体10可以沿NFC天线组件100的厚度方向相对设置并耦合。在另一种可能的实施例中,至少部分中继天线辐射体11与第一NFC天线辐射体10可以沿NFC天线组件100长度方向相对设置并耦合。在其他可能的实施例中,至少部分中继天线辐射体11与第一NFC天线辐射体10可以沿NFC天线组件100的宽度方向相对设置并耦合。中继天线辐射体11与第一NFC天线辐射体10间隔设置,且中继天线辐射体11与第一NFC天线辐射体10之间的间距使得中继天线辐射体11与第一NFC天线辐射体10能够电耦合或电磁耦合。中继天线辐射体11在第一NFC天线辐射体10的所在面的正投影覆盖至少部分第一NFC天线辐射体10。
中继天线辐射体11的品质因数可以用于表示中继天线辐射体11形成的谐振电路中的能量与每个周期损失的能量之比的电磁量。中继天线辐射体11的品质因数越大,则中继天线辐射体11对于NFC信号的转发性能越好,可以增加NFC信号的传输距离越长。中继天线辐射体11的品质因数为Q 1
Figure PCTCN2022139743-appb-000001
L 1=μN 2S/d
其中,L 1为中继天线辐射体11的电感;ω为中继天线辐射体11的角频率;R 1为中继天线辐射体11的电阻。μ为中继天线辐射体11的磁导率,N为中继天线辐射体11的线圈匝数,S为中继天线辐射体11的线圈所包围的面积,d为中继天线辐射体11的线圈的宽度。可以理解的,L 1与中继天线辐射体11的宽度、中继天线辐射体11的磁导率以及中继天线辐射体11的间距相关。R 1与中继天线辐射体11的电阻率、中继天线辐射体11的长度以及中继天线辐射体11的横截面积相关。可选的,通过设计中继天线辐射体11的宽度、中继天线辐射体11的间距、中继天线辐射体11的长度以及中继天线辐射体11的横截面积,通过选择中继天线辐射体11的材质等可以控制中继天线辐射体11的品质因数。中继天线辐射体11的品质因数大于1。在一种可能的实施例中,中继天线辐射体11的品质因数大于或等于10。
中继天线辐射体11的增益为A 1
Figure PCTCN2022139743-appb-000002
其中,x 1为中继天线辐射体11的失谐系数,用于表征中继天线辐射体11的工作频率与谐振频率失谐的程度;j为虚数,j 2=-1。在理想状态下,可以认为中继天线辐射体11无失谐,即中继天线辐射体11工作于谐振频率,此时失谐系数x 1为1。A 1的绝对值等于品质因数Q 1。因此,当品质因数Q 1大于1时,A 1的绝对值也大于1,使得中继天线辐射体11所转发的NFC信号相较于中继天线辐射体11所接收的NFC信号有所增强。而实际应用中,NFC信号在传输过程中存在泄漏、损耗等,无法保证中继天线辐射体11处于理想状态,因此当Q 1小于或等于1时,无法保证中继天线辐射体11对NFC信号的放大作用。
本申请提供的NFC天线组件100通过设置中继天线辐射体11,由于中继天线辐射体11与第一NFC天线辐射体10耦合,中继天线辐射体11能够接收第一NFC天线辐射体10发射的NFC信号并进行转发,因此可增加NFC信号的传输路径,而中继天线辐射体11的品质因数大于1,使得中继天线辐射体11对于NFC信号具有放大的功效,即中继天线辐射体11形成传输NFC信号的增益天线辐射体,从而可延长NFC信号的传输距离,提高NFC天线组件100的NFC性能。
如图4所示,图4为本申请实施例提供的一种终端设备组件300的结构示意图。终端设备组件300包括终端设备30、设备配件31及NFC天线组件100。其中,终端设备30可以包括手机、平板电脑、手表、手环等中的一种。本申请实施例中,终端设备30以手机为例。设备配件31可以包括保护壳、保护膜、装饰挂件、功能拉环、功能支架等中的一种。保护壳作为终端设备30的外部保护件,可保护终端设备30,避免跌落损坏等。保护膜作为终端设备30的显示屏保护件,可保护终端设备30的显示屏。装饰挂件、功能拉环、功能支架可分别用于提高终端设备30的装饰性、握持性、支撑性。设备配件31装设于终端设备30外。本申请实施例中,设备配件31以保护壳为例。设备配件31可以套设于终端设备30外。NFC天线组件100包括第一NFC天线辐射体10和中继天线辐射体11。第一NFC天线辐射体10用于发射NFC信号。中继天线辐射体11用于对第一NFC天线辐射体10发射的NFC信号进行放大并转发。第一NFC天线辐射体10设于终端设备30内。中继天线辐射体11设于设备配件31。
在一种可能的实施例中,终端设备30包括主板。第一NFC天线辐射体10设于主板。当然,在其他的实施例中,第一NFC天线辐射体10可以设于终端设备30的外壳内表面。中继天线辐射体11设于设备配件31。可选的,中继天线辐射体11成型于设备配件31的内表面;或者,中继天线辐射体11成型于设备配件31的外表面;又或者,中继天线辐射体11设于设备配件31的夹层内。其中,设备配件31的内表面朝向终端设备30,设备配件31的外表面背离终端设备30。中继天线辐射体11设于设备配件31的方式包括但不限于印刷、贴装、蒸镀、镭射、镭雕、注塑等。
本申请提供的终端设备组件300包括NFC天线组件100,由于第一NFC天线辐射体10用于发射NFC信号,中继天线辐射体11用于接收第一NFC天线辐射体10发射的NFC信号并进行转发,且中继天线辐射体11的品质因数大于1,对于所接收的NFC信号具有放大、增强的作用,因此可以延长NFC信号的传输距离,提升终端设备组件300的NFC通信性能。而第一NFC天线辐射体10设于终端设备30内,中继天线辐射体11设于设备配件31,使得中继天线辐射体11不会占用终端设备30的内部空间,从而可解决第一NFC天线辐射体10由于受到终端设备30的内部空间限制而尺寸较小时,导致终端设备30的NFC通信性能不足的问题。
如图5所示,图5为本申请实施例提供的一种电子设备400的结构示意图。电子设备400可以是手机、平板电脑、车载电脑等移动终端;或者,手表、手环等穿戴设备。本申请实施例中电子设备400以手机为例。电子设备400包括外壳41和NFC天线组件100。NFC天线组件100包括第一NFC天线辐射体10和中继天线辐射体11。第一NFC天线辐射体10用于发射NFC信号。中继天线辐射体11用于对第一NFC天线辐射体10发射的NFC信号进行放大并转发。
请参照图5和图6,第一NFC天线辐射体10设于外壳41内。在一种可能的实施例中,电子设备400包括显示屏410、中框411和后盖412。中框411与后盖412可以一体成型也可以连接为一体。显示屏410与后盖412相对设置,并连接于中框411背离后盖412的一侧。显示屏410、中框411和后盖412形成电子设备400的外壳41。显示屏410、中框411和后盖412之间形成电子设备400的内部空间。其中,第一NFC天线辐射体10设于电子设备400的内部空间中。
可选的,中继天线辐射体11设于电子设备400的内部空间中,或者,中继天线辐射体11设于电子设备400的外壳41上。当中继天线辐射体11设于电子设备400的内部空间时, 第一NFC天线辐射体10、中继天线辐射体11及外壳41可以依次排列。
一实施方式中,中继天线辐射体11成型于外壳41上。举例而言,中继天线辐射体11可以成型于后盖412的内表面,或者,中继天线辐射体11可以成型于后盖412的外表面,又或者,中继天线辐射体11可以成型于中框411的内表面,或者,中继天线辐射体11可以成型于中框411的外表面。当然,中继天线辐射体11还可以设于显示屏410的内表面,显示屏410的外表面,或者,显示屏410的膜层之间。其中,中继天线辐射体11成型于外壳41上的方式包括但不限于印刷、贴装、蒸镀、镭射、镭雕、注塑等。本实施方式中,外壳41可以作为中继天线辐射体11的承载件,无需设置独立的承载件承载中继天线辐射体11,可减少电子设备400的零部件。此外,将中继天线辐射体11成型于外壳41上使得电子设备400的整体结构简单,易于实现。当然,在其他实施方式中,中继天线辐射体11可以为独立的FPC天线辐射体或LDS天线辐射体,并装设于电子设备400的内部空间中;此时,中继天线辐射体11可承载于电子设备400的外壳、主板或主板支架等上。
另一实施方式中,外壳41包括外观装饰件。本实施方式中以后盖412包括外观装饰件为例。当然,在其他实施方式中,中框411也可以包括外观装饰件。外观装饰件可以是设于后盖412上的商标、装饰图案等。至少部分外观装饰件形成中继天线辐射体11。换言之,中继天线辐射体11复用了电子设备400外壳41上的外观装饰件。其中,外观装饰件的材质可以是金属、合金、碳纤维、复合导电材质等。本实施方式中,中继天线辐射体11既有转发第一NFC天线辐射体10发射的NFC信号的作用,又有装饰外观的效果,且中继天线辐射体11未占用电子设备400的内部空间,可以克服第一NFC天线辐射体10由于受到电子设备400的内部空间限制而尺寸较小时,导致电子设备400的NFC通信性能不足的问题。
再一实施方式中,电子设备400还包括摄像头装饰件。摄像头装饰件贯穿电子设备400的后盖412并凸出于后盖412外。至少部分摄像头装饰件形成中继天线辐射体11。换言之,中继天线辐射体11复用了电子设备400的摄像头装饰件。其中,摄像头装饰件的材质可以是金属、合金、碳纤维、复合导电材质等。本实施方式中,中继天线辐射体11复用摄像头装饰件,使得摄像头装饰件既有转发第一NFC天线辐射体10发射的NFC信号的作用,又有装饰、保护摄像头的效果,且中继天线辐射体11未占用电子设备400的内部空间,可以克服第一NFC天线辐射体10由于受到电子设备400的内部空间限制而尺寸较小时,导致电子设备400的NFC通信性能不足的问题。
又一实施方式中,电子设备400还包括主板支架。主板支架用于支撑、固定主板。主板支架位于电子设备400的内部空间。主板支架的材质可以是金属、合金、碳纤维、复合导电材质等。至少部分主板支架形成中继天线辐射体11。换言之,中继天线辐射体11复用了电子设备400的主板支架。本实施方式中,中继天线辐射体11复用主板支架,使得主板支架既有转发第一NFC天线辐射体10发射的NFC信号的作用,又有支撑、固定主板的效果,且中继天线辐射体11复用了电子设备400的主板支架,未增加电子设备400的零部件,可解决第一NFC天线辐射体10由于受到电子设备400的内部空间限制而尺寸较小时,导致电子设备400的NFC通信性能不足的问题。
本申请提供的电子设备400包括NFC天线组件100,由于第一NFC天线辐射体10用于发射NFC信号,中继天线辐射体11用于接收第一NFC天线辐射体10发射的NFC信号并进行转发,且中继天线辐射体11的品质因数大于1,对于所接收的NFC信号具有放大、增强的作用,因此可以延长NFC信号的传输距离,提升电子设备400的NFC通信性能。而第一NFC天线辐射体10设于电子设备400内,中继天线辐射体11设于电子设备400的外壳41上,使得中继天线辐射体11占用电子设备400的内部空间较少,或者复用电子设备400的外观装饰件、摄像头装饰件、主板支架,中继天线辐射体11与外观装饰件、摄像头装饰件、主板支架集成为一体,未增加电子设备400的零部件,从而可解决第一NFC天线辐射体10由于受到电子设备400的内部空间限制而尺寸较小时,导致电子设备400的NFC通信性能不足的问题。
以下实施例对本申请提供的NFC天线组件100进行详细的描述,以下实施例的描述中以第一NFC天线辐射体10、中继天线辐射体11皆设于电子设备400的内部空间为例。
进一步地,如图7所示,NFC天线组件100还包括匹配电路12。匹配电路12可以包括串联电容、串联电感、并联电容、并联电感等中的一种或多种。匹配电路12用于调节中继天线辐射体11的工作频率,以使中继天线辐射体11处于预设谐振模式。通过设计匹配电路12调节中继天线辐射体11的工作频率,以使中继天线辐射体11处于预设谐振模式,可以使中继天线辐射体11得失谐系数x 1等于或接近1,从而便于在中继天线辐射体11的品质因数Q 1一定的情况下提高中继天线辐射体11的增益。其中,中继天线辐射体11处于预设谐振模式时的工作频率为13.56MHz或者接近13.56MHz。
在一种可能的实施例中,如图8所示,NFC天线组件100包括至少两个匹配电路12。至少一个匹配电路12的一端电连接中继天线辐射体11的一端,另一端接地;至少一个匹配电路12的一端电连接中继天线辐射体11的另一端,另一端接地。以下实施例中,以NFC天线组件100包括两个匹配电路12为例。可选的,两个匹配电路12可以分别电连接于中继天线辐射体11的两端与电子设备400的中框411之间,其中,电子设备400的中框411接地;或者,两个匹配电路12可以分别电连接于中继天线辐射体11的两端与电子设备400的主板的参考地之间。当中继天线辐射体11复用电子设备400的外观装饰件、摄像头装饰件或主板支架时,本实施例仅需在中继天线辐射体11与电子设备400的参考地之间设计匹配电路12即可提高电子设备400的NFC性能,占用电子设备400的内部空间较少。
在另一种可能的实施例中,如图9所示,中继天线辐射体11包括呈环形的导线绕组110。导线绕组110包括第一自由端110a和第二自由端110b。“自由端”可以理解为中继天线辐射体11未与其他部件进行物理连接的端点。本实施例中,第一自由端110a、第二自由端110b可参照图9所示。第一自由端110a和第二自由端110b中的一者为中继天线辐射体11的起始端,第一自由端110a和第二自由端110b中的另一者为中继天线辐射体11的终止端。匹配电路12的一端电连接第一自由端110a,匹配电路12的另一端电连接第二自由端110b。换言之,导线绕组110的起始端可以形成第一自由端110a,导线绕组110的终止端可以形成第二自由端110b,匹配电路12可以电连接于导线绕组110的起始端与导线绕组110的终止端之间。在其他可能的实施例中,例如:当中继天线辐射体11复用电子设备400的外观装饰件时,可在外观装饰件上设置缺口以形成第一自由端110a和第二自由端110b,匹配电路12可以电连接于外观装饰件的缺口断点之间。本实施例仅需在中继天线辐射体11的两端之间设计匹配电路12即可提高电子设备400的NFC性能,同样占用电子设备400的内部空间较少。
在其他可能的实施例中,中继天线辐射体11包括第一子天线辐射体、第二子天线辐射体和至少一个寄生电容。第一子天线辐射体和第二子天线辐射体间隔设置,寄生电容电连接于第一子天线辐射体和第二子天线辐射体之间。寄生电容用于使第一子天线辐射体、第二子天线辐射体处于预设谐振模式。本申请对于寄生电容的数量不做具体的限定。当中继天线辐射体11包括呈环形的导线绕组110时,第一子天线辐射体、第二子天线辐射体可以理解为导线绕组110中间隔设置的导线段。本实施例中,由于中继天线辐射体11包括寄生电容,使得第一子天线辐射体和第二子天线辐射体可以处于预设谐振模式,因此无需设置其他的匹配电路调谐中继天线辐射体11,在提高NFC性能的同时,能够进一步减少结构部件,降低成本。
可选的,如图10所示,部分中继天线辐射体11与第一NFC天线辐射体10相对设置并耦合,另一部分中继天线辐射体11与第一NFC天线辐射体10错位设置。换言之,中继天线辐射体11在第一NFC天线辐射体10的所在面的正投影与第一NFC天线辐射体10部分重叠。可选的,部分中继天线辐射体11与第一NFC天线辐射体10沿电子设备400的厚度方向Z相对设置,且部分中继天线辐射体11与第一NFC天线辐射体10之间的间距使得部分中继天线辐射体11与第一NFC天线辐射体10能够耦合,另一部分中继天线辐射体11与第一NFC天线辐射体10沿电子设备400的厚度方向Z错位设置,即另一部分中继天线辐射体11与第一NFC天线辐射体10未耦合或耦合较少,对NFC天线组件100的整体性能影响较小可忽略;或者,部分中继天线辐射体11与第一NFC天线辐射体10沿电子设备400的长度方向X相对设置,且部分中继天线辐射体11与第一NFC天线辐射体10之间的间距使得部分中继天线辐射体11与第一NFC天线辐射体10能够耦合,另一部分中继天线辐射体11与第一NFC天线 辐射体10沿电子设备400的长度方向X错位设置,即另一部分中继天线辐射体11与第一NFC天线辐射体10未耦合或耦合较少,对NFC天线组件100的整体性能影响较小可忽略;又或者,部分中继天线辐射体11与第一NFC天线辐射体10沿电子设备400的宽度方向Y相对设置,且部分中继天线辐射体11与第一NFC天线辐射体10之间的间距使得部分中继天线辐射体11与第一NFC天线辐射体10能够耦合,另一部分中继天线辐射体11与第一NFC天线辐射体10沿电子设备400的宽度方向Y错位设置,即另一部分中继天线辐射体11与第一NFC天线辐射体10未耦合或耦合较少,对NFC天线组件100的整体性能影响较小可忽略。其中,中继天线辐射体11的面积可以大于或等于第一NFC天线辐射体10的面积。通过使部分中继天线辐射体11与第一NFC天线辐射体10相对设置并耦合,另一部分中继天线辐射体11与第一NFC天线辐射体10错位设置,可减少中继天线辐射体11对第一NFC天线辐射体10发射NFC信号的影响,降低第一NFC天线辐射体10的工作频率与谐振频率的失谐程度,使得第一NFC天线辐射体10的失谐系数可以等于或接近1。
可选的,中继天线辐射体11的失谐系数大于或等于0.5且小于或等于1。中继天线辐射体11的失谐系数为x 1
x 1=1/L 1C 1ω 2
其中,L 1为中继天线辐射体11的电感;ω为中继天线辐射体11的角频率;C 1为中继天线辐射体11的电容。
当然,第一NFC天线辐射体10的失谐系数也可以大于或等于0.5且小于或等于1。第一NFC天线辐射体10的失谐系数为x 2
x 2=1/L 2C 2ω 2
其中,L 2为第一NFC天线辐射体10的电感;ω为第一NFC天线辐射体10的角频率;C 2为第一NFC天线辐射体10的电容。
第二NFC天线辐射体20的失谐系数也可以大于或等于0.5且小于或等于1。第二NFC天线辐射体20的失谐系数为x 3
x 3=1/L 3C 3ω 2
其中,L 3为第一NFC天线辐射体10的电感;ω为第一NFC天线辐射体10的角频率;C 3为第一NFC天线辐射体10的电容。
中继天线辐射体11的数量可以为一个或多个。在一种可能的实施例中,如图11所示,中继天线辐射体11的数量为一个。第一NFC天线辐射体10、中继天线辐射体11及第二NFC天线辐射体20形成三级NFC天线系统200。NFC天线系统200的耦合指数为n,
Figure PCTCN2022139743-appb-000003
其中,k为耦合系数;耦合系数k用来描述两个天线辐射体之间耦合的松紧程度,两个天线辐射体之间实际的互感绝对值与其最大极限值之比定义为耦合系数k,当两个天线辐射体完全互感时耦合系数k为1。但这是不可能达到的理想状态,泄漏总是存在的。耦合系数k与天线辐射体的形状,距离、匝数、线宽线间距等相关。A 1中继天线辐射体11的增益;A 2为第一NFC天线辐射体10的增益;A 3为第二NFC天线辐射体20的增益。
Figure PCTCN2022139743-appb-000004
Figure PCTCN2022139743-appb-000005
Figure PCTCN2022139743-appb-000006
当中继天线辐射体11处于预设谐振模式时,A 1=Q 1;当第一NFC天线辐射体10处于预设谐振模式时,A 2=Q 2;当第二NFC天线辐射体20处于预设谐振模式时,A 3=Q 3;此时,
Figure PCTCN2022139743-appb-000007
其中,k为耦合系数;Q 1为中继天线辐射体11的品质因数;Q 2为第一NFC天线辐射体10的品质因数;Q 3为第二NFC天线辐射体20的品质因数;耦合指数n用于表征三级NFC天线系统200在耦合系数的基础上,结合调谐、阻抗元素后的耦合系数,也叫绩效因子。
一实施例中,第一NFC天线辐射体的品质因数大于1。第二NFC天线辐射体的品质因数大于1。从上述公式中可以看出,当中继天线辐射体11的品质因数Q 1、第一NFC天线辐射体10的品质因数Q 2、第二NFC天线辐射体20的品质因数Q 3皆大于1时,耦合指数n大于耦合系数k,即中继天线辐射体11与第一NFC天线辐射体10之间的耦合效果较好,中继天线辐射体11与第二NFC天线辐射体20之间的耦合效果也较好,中继天线辐射体11能够作为三级NFC天线系统200的增益天线,使得第一NFC天线辐射体10与第二NFC天线辐射体20传输NFC信号和/或反馈信号的性能提升。此外,结合上述耦合指数n、第一NFC天线辐射体10的增益A 2、第二NFC天线辐射体20的增益A 3的公式,也可以看出当第一NFC天线辐射体10的品质因数Q 2、第二NFC天线辐射体20的品质因数Q 3一定时,第一NFC天线辐射体10的失谐系数越接近1,第二NFC天线辐射体20的失谐系数越接近1,则NFC天线组件100、NFC天线系统200的整体增益越好,NFC性能的提升越明显。因此,通过使部分中继天线辐射体11与第一NFC天线辐射体10相对设置并耦合,另一部分中继天线辐射体11与第一NFC天线辐射体10错位设置,可减少中继天线辐射体11对第一NFC天线辐射体10发射NFC信号的影响,降低第一NFC天线辐射体10的工作频率与谐振频率的失谐程度,使得第一NFC天线辐射体10的失谐系数可以等于或接近1,可提高NFC天线组件100、NFC天线系统200的整体增益,提升NFC性能。当然,在其他实施例中,部分中继天线辐射体11与第二NFC天线辐射体20可以相对设置并耦合,另一部分中继天线辐射体11与第二NFC天线辐射体20可以错位设置,此时,可以减少中继天线辐射体11对第二NFC天线辐射体20发射反馈信号的影响,降低第二NFC天线辐射体20的工作频率与谐振频率的失谐程度,使得第二NFC天线辐射体20的失谐系数可以等于或接近1。
在一种实施方式中,三级NFC天线系统200的中继天线辐射体11的品质因数皆大于1,第一NFC天线辐射体10的品质因数皆大于1,第二NFC天线辐射体20的品质因数皆大于1,且中继天线辐射体11、第一NFC天线辐射体10及第二NFC天线辐射体20皆处于预设谐振模式。
在另一种可能的实施例中,中继天线辐射体11的数量可以为多个。本申请实施例中以中继天线辐射体11的数量、第一NFC天线辐射体10的数量、第二NFC天线辐射体20的数量之和为N为例。N大于3,且为正整数。第一NFC天线辐射体10的数量、第二NFC天线辐射体20的数量皆为一个。第一NFC天线辐射体10、中继天线辐射体11及第二NFC天线辐射体20形成N级NFC天线系统200。NFC天线系统200的耦合指数为n,
Figure PCTCN2022139743-appb-000008
其中,k为耦合系数;A 1至A N-2分别为N-2个中继天线辐射体11的增益;A N-1为第一NFC天线辐射体10的增益;A N为第二NFC天线辐射体20的增益。
Figure PCTCN2022139743-appb-000009
Figure PCTCN2022139743-appb-000010
Figure PCTCN2022139743-appb-000011
Figure PCTCN2022139743-appb-000012
其中,x 1、…x N-2分别为N-2个中继天线辐射体11的失谐系数;x N-1为第一NFC天线辐射体10的失谐系数;x N为第二NFC天线辐射体20的失谐系数。
当N-2个中继天线辐射体11皆处于预设谐振模式时,A 1=Q 1,A 2=Q 2,A 3=Q 3…A N-2=Q N-2;当第一NFC天线辐射体10处于预设谐振模式时,A N-1=Q N-1;当第二NFC天线辐射体20处于预设谐振模式时,A N=Q N;此时,
Figure PCTCN2022139743-appb-000013
其中,k为耦合系数;Q 1至Q N-2分别为N-2个中继天线辐射体11的品质因数;Q N-1为第一NFC天线辐射体10的品质因数;Q N为第二NFC天线辐射体20的品质因数;耦合指数n用于表征N级NFC天线系统200在耦合系数的基础上,结合调谐、阻抗元素后的耦合系数,也叫绩效因子。从上述公式中可以看出,当Q 1、Q 2、Q 3…Q N皆大于1时,耦合指数n大于耦合系数k,即多个中继天线辐射体11与第一NFC天线辐射体10之间的耦合效果较好,多个中继天线辐射体11与第二NFC天线辐射体20之间的耦合效果也较好,中继天线辐射体11能够作为N级NFC天线系统200的增益天线,使得第一NFC天线辐射体10与第二NFC天线辐射体20传输NFC信号和/或反馈信号的性能提升。
在一种实施方式中,N级NFC天线系统200的N-2个中继天线辐射体11的品质因数皆大于1,第一NFC天线辐射体10的品质因数皆大于1,第二NFC天线辐射体20的品质因数皆大于1,且中继天线辐射体11、第一NFC天线辐射体10及第二NFC天线辐射体20皆处于预设谐振模式。
可以理解的,当中继天线辐射体11的数量为多个时,NFC天线组件100还包括对应多个中继天线辐射体11的多个匹配电路12。换言之,NFC天线组件100的匹配电路12的数量与中继天线辐射体11的数量可以相同。可选的,每个匹配电路12的一端电连接相应的中继天线辐射体11,每个匹配电路12的另一端接地;或者,每个中继天线辐射体11包括第一自由端110a和第二自由端110b,每个匹配电路12的一端电连接相应的中继天线辐射体11的第一自由端110a,每个匹配电路12的另一端电连接相应的中继天线辐射体11的第二自由端110b。
在一种可能的实施例中,如图12所示,中继天线辐射体11的数量为三个,分别记为第一中继天线辐射体112、第二中继天线辐射体113及第三中继天线辐射体114。NFC天线组件100还包括对应三个中继天线辐射体11的三个匹配电路12,分别记为第一匹配电路120、第二匹配电路121及第三匹配电路122。第一匹配电路120的一端电连接第一中继天线辐射体112,第一匹配电路120的另一端接地。第一匹配电路120用于调节第一中继天线辐射体112的工作频率,以使第一中继天线辐射体112处于预设谐振模式。换言之,第一匹配电路120用于调节第一中继天线辐射体112的工作频率,以控制第一中继天线辐射体112的失谐系数大于或等于0.5且小于或等于1,或接近1。第二匹配电路121的一端电连接第二中继天线辐射体113,第二匹配电路121的另一端接地。第二匹配电路121用于调节第一中继天线辐射体112的工作频率,以使第二中继天线辐射体113处于预设谐振模式。换言之,第二匹配电路121用于调节第二中继天线辐射体113的工作频率,以控制第二中继天线辐射体113的失谐系数大于或等于0.5且小于或等于1,或接近1。第三匹配电路122的一端电连接第三中继天线辐射体114,第三匹配电路122的另一端接地。第三匹配电路122用于调节第三中继天线辐射体114的工作频率,以使第三中继天线辐射体114处于预设谐振模式。换言之,第三匹配电路122用于调节第三中继天线辐射体114的工作频率,以控制第三中继天线辐射体114的失谐系数大于或等于0.5且小于或等于1,或接近1。当然,在其他实施例中,若中继天线辐射体11自身对NFC信号具有较好的增益效果时,无需对中继天线辐射体11进行调谐,也无需设置匹配电路。
在另一种可能的实施例中,中继天线辐射体11的数量可以为三个,分别记为第四中继天线辐射体、第五中继天线辐射体及第六中继天线辐射体。NFC天线组件100还包括对应三个中继天线辐射体11的三个匹配电路12,分别记为第四匹配电路、第五匹配电路及第六匹配电路。第四匹配电路的一端电连接第四中继天线辐射体的第一自由端110a,第四匹配电路的另一端电连接第四中继天线辐射体的第二自由端110b。第四匹配电路用于调节第四中继天线辐射体的工作频率,以使第四中继天线辐射体处于预设谐振模式。换言之,第四匹配电路用于调节第四中继天线辐射体的工作频率,以控制第四中继天线辐射体的失谐系数大于或等于0.5且小于或等于1,或接近1。第五匹配电路的一端电连接第五中继天线辐射体的第一自由端110a,第五匹配电路的另一端电连接第五中继天线辐射体的第二自由端110b。第五匹配电路用于调节第五中继天线辐射体的工作频率,以使第五中继天线辐射体处于预设谐振模式。换言之,第五匹配电路用于调节第五中继天线辐射体的工作频率,以控制第五中继天线辐射体的失谐系数大于或等于0.5且小于或等于1,或接近1。第六匹配电路的一端电连接第六中继天线辐射体的第一自由端110a,第六匹配电路的另一端电连接第六中继天线辐射体的第二自由端110b。第六匹配电路用于调节第六中继天线辐射体的工作频率,以使第六中继天线辐射体处于预设谐振模式。换言之,第六匹配电路用于调节第六中继天线辐射体的工作频率,以控制第六中继天线辐射体的失谐系数大于或等于0.5且小于或等于1,或接近1。
其中,当中继天线辐射体11的数量为多个时,多个中继天线辐射体11可以位于第一NFC天线辐射体10的不同侧;或者,多个中继天线辐射体11可以位于第一NFC天线辐射体10的同一侧。在一种可能的实施例中,如图13所示,中继天线辐射体11的数量三个,三个中继天线辐射体11皆位于第一NFC天线辐射体10朝向第二NFC天线辐射体20的一侧,或者,如图14所示,中继天线辐射体11的数量三个,三个中继天线辐射体11皆位于第一NFC天线辐射体10背离第二NFC天线辐射体20的一侧。在另一种可能的实施例中,如图15所示,中继天线辐射体11的数量三个,三个中继天线辐射体11中两个中继天线辐射体11位于第一NFC天线辐射体10朝向第二NFC天线辐射体20的一侧,另外一个中继天线辐射体11位于第一NFC天线辐射体10背离第二NFC天线辐射体20的一侧;或者,如图16所示,中继天线辐射体11的数量三个,三个中继天线辐射体11中一个中继天线辐射体11位于第一NFC天线辐射体10朝向第二NFC天线辐射体20的一侧,另外两个中继天线辐射体11位于第一NFC天线辐射体10背离第二NFC天线辐射体20的一侧。
进一步地,如图17所示,NFC天线组件100还包括NFC射频芯片13,NFC射频芯片13电连接第一NFC天线辐射体10,NFC射频芯片13用于产生射频信号并传输至第一NFC天线辐射体10,第一NFC天线辐射体10根据射频信号发射NFC信号。NFC射频芯片13与中继天线辐射体11之间未连接。
本申请提供的NFC天线组件100通过设置中继天线辐射体11,由于中继天线辐射体11与第一NFC天线辐射体10耦合,中继天线辐射体11能够接收第一NFC天线辐射体10发射的NFC信号并进行转发,因此可增加NFC信号的传输路径,而中继天线辐射体11的品质因数大于1,使得中继天线辐射体11对于NFC信号具有放大的功效,即中继天线辐射体11形成传输NFC信号的增益天线辐射体,从而可延长NFC信号的传输距离,提高NFC天线组件100的NFC性能。本申请提供的电子设备400、终端设备组件300及NFC天线系统200包括所述的NFC天线组件100,因此具有较好的NFC性能。
上述在说明书、权利要求书以及附图中提及的特征,只要在本申请的范围内是有意义的,均可以任意相互组合。针对NFC天线组件100所说明的优点和特征以相应的方式适用于电子设备400、终端设备组件300及NFC天线系统200。
尽管上面已经示出和描述了本申请的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本申请的限制,本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型,这些改进和润饰也视为本申请的保护范围。

Claims (20)

  1. 一种NFC天线组件,包括:
    NFC射频芯片;
    第一NFC天线辐射体,用于在所述NFC射频芯片的激励下发射NFC信号;
    中继天线辐射体,所述中继天线辐射体与所述第一NFC天线辐射体间隔设置,且所述中继天线辐射体在所述第一NFC天线辐射体的所在面的正投影覆盖至少部分所述第一NFC天线辐射体,所述中继天线辐射体与所述第一NFC天线辐射体耦合,所述中继天线辐射体用于放大所述NFC信号。
  2. 根据权利要求1所述的NFC天线组件,所述中继天线辐射体的品质因数大于1。
  3. 根据权利要求1所述的NFC天线组件,所述NFC天线组件还包括匹配电路,所述匹配电路用于调节所述中继天线辐射体的工作频率,以使所述中继天线辐射体处于预设谐振模式。
  4. 根据权利要求3所述的NFC天线组件,所述匹配电路的数量为至少两个,至少一个所述匹配电路的一端电连接所述中继天线辐射体的一端,另一端接地;至少一个所述匹配电路的一端电连接所述中继天线辐射体的另一端,另一端接地。
  5. 根据权利要求3所述的NFC天线组件,所述中继天线辐射体包括第一自由端和第二自由端,所述匹配电路的一端电连接所述第一自由端,所述匹配电路的另一端电连接所述第二自由端。
  6. 根据权利要求1所述的NFC天线组件,所中继天线辐射体包括第一子天线辐射体、第二子天线辐射体和至少一个寄生电容,所述第一子天线辐射体和第二子天线辐射体间隔设置,所述寄生电容电连接于所述第一子天线辐射体和所述第二子天线辐射体之间,所述寄生电容用于使所述第一子天线辐射体、所述第二子天线辐射体处于预设谐振模式。
  7. 根据权利要求1所述的NFC天线组件,部分所述中继天线辐射体与所述第一NFC天线辐射体相对设置并耦合,另一部分所述中继天线辐射体与所述第一NFC天线辐射体错位设置。
  8. 根据权利要求1至7任意一项所述的NFC天线组件,所述中继天线辐射体的失谐系数为x 1
    x 1=1/L 1C 1ω 2
    其中,失谐系数x 1大于或等于0.5且小于或等于1;L 1为中继天线辐射体的电感;ω为中继天线辐射体的角频率;C 1为中继天线辐射体的电容。
  9. 根据权利要求8所述的NFC天线组件,所述中继天线辐射体的增益为A 1
    Figure PCTCN2022139743-appb-100001
    其中,中继天线辐射体的品质因数为Q 1,j为虚数,j 2=-1。
  10. 根据权利要求1至7任意一项所述的NFC天线组件,所述中继天线辐射体的数量为多个,多个所述中继天线辐射体位于所述第一NFC天线辐射体的不同侧;或者,多个所述中继天线辐射体位于所述第一NFC天线辐射体的同一侧。
  11. 根据权利要求1至7任意一项所述的NFC天线组件,所述中继天线辐射体包括呈环形的导线绕组。
  12. 一种NFC天线系统,包括第二NFC天线辐射体及如权利要求1至11任意一项所述的NFC天线组件,所述第二NFC天线辐射体用于接收所述中继天线辐射体放大的NFC信号。
  13. 根据权利要求12所述的NFC天线系统,所述第一NFC天线辐射体的品质因数大于1,所述第二NFC天线辐射体的品质因数大于1,所述NFC天线系统的耦合指数为n,
    Figure PCTCN2022139743-appb-100002
    其中,k为NFC天线系统的耦合系数;Q 1为中继天线辐射体的品质因数;Q 2为第一NFC 天线辐射体的品质因数;Q 3为第二NFC天线辐射体的品质因数。
  14. 一种电子设备,包括外壳及如权利要求1至11任意一项所述的NFC天线组件,所述第一NFC天线辐射体设于所述外壳内。
  15. 根据权利要求14所述的电子设备,所述第一NFC天线辐射体、所述中继天线辐射体及所述外壳依次排列。
  16. 根据权利要求14所述的电子设备,所述中继天线辐射体为FPC天线辐射体或LDS天线辐射体。
  17. 根据权利要求14所述的电子设备,
    所述电子设备还包括主板支架,所述中继天线辐射体形成至少部分所述主板支架;
    或者,所述电子设备还包括摄像头装饰件,所述中继天线辐射体形成至少部分所述摄像头装饰件。
  18. 根据权利要求14所述的电子设备,所述外壳包括外观装饰件,所述中继天线辐射体形成至少部分所述外观装饰件。
  19. 一种终端设备组件,包括终端设备、设备配件及如权利要求1至11任意一项所述的NFC天线组件,所述设备配件装设于所述终端设备外,所述第一NFC天线辐射体设于所述终端设备内,所述中继天线辐射体设于所述设备配件。
  20. 根据权利要求19所述的终端设备组件,所述设备配件包括保护壳、保护膜、装饰挂件、功能拉环、功能支架中的一种。
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