WO2023134337A1 - Appareil d'antenne et dispositif électronique - Google Patents

Appareil d'antenne et dispositif électronique Download PDF

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Publication number
WO2023134337A1
WO2023134337A1 PCT/CN2022/137228 CN2022137228W WO2023134337A1 WO 2023134337 A1 WO2023134337 A1 WO 2023134337A1 CN 2022137228 W CN2022137228 W CN 2022137228W WO 2023134337 A1 WO2023134337 A1 WO 2023134337A1
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WO
WIPO (PCT)
Prior art keywords
antenna
coil
excitation signal
magnetic field
conductor structure
Prior art date
Application number
PCT/CN2022/137228
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English (en)
Chinese (zh)
Inventor
万小勇
Original Assignee
Oppo广东移动通信有限公司
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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 WO2023134337A1 publication Critical patent/WO2023134337A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • 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

Definitions

  • the present application relates to the technical field of communications, and in particular to an antenna device and electronic equipment.
  • NFC Near Field Communication
  • Embodiments of the present application provide an antenna device and electronic equipment, which can reduce the number of radiators in the antenna device, thereby reducing the layout space occupied by the radiator, and can increase the strength of the antenna device to radiate NFC signals to the outside, thereby improving NFC communication. stability.
  • an antenna device including:
  • An antenna coil including a first coil part and a second coil part located on both sides of the antenna coil axis;
  • an antenna radiator electrically connected to the second coil part, and the antenna radiator is used to transmit a first excitation signal
  • the antenna coil, the conductor structure, and the antenna radiator are jointly used to transmit the second excitation signal, and when the second excitation signal is transmitted, the direction of the first magnetic field generated by the conductor structure is the same as that of the The direction of the second magnetic field generated by the first coil part is opposite, so that the first magnetic field and the second magnetic field at least partially cancel each other.
  • the embodiment of the present application further provides an electronic device, including an antenna device, and the antenna device includes:
  • An antenna coil including a first coil part and a second coil part located on both sides of the antenna coil axis;
  • an antenna radiator electrically connected to the second coil part, and the antenna radiator is used to transmit a first excitation signal
  • the antenna coil, the conductor structure, and the antenna radiator are jointly used to transmit the second excitation signal, and when the second excitation signal is transmitted, the direction of the first magnetic field generated by the conductor structure is the same as that of the The direction of the second magnetic field generated by the first coil part is opposite, so that the first magnetic field and the second magnetic field at least partially cancel each other.
  • FIG. 1 is a schematic diagram of a first structure of an electronic device provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a first type of antenna device provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of an antenna coil of an antenna device provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of currents when the antenna device according to the embodiment of the present application transmits a second excitation signal.
  • FIG. 5 is a schematic structural diagram of an antenna coil and a conductor structure of an antenna device provided by an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of the first flexible circuit board in the antenna device provided by the embodiment of the present application.
  • FIG. 7 is a cross-sectional view of the first flexible circuit board shown in FIG. 6 along the direction Q1-Q2.
  • FIG. 8 is a schematic diagram of the laminated structure of the first flexible circuit board and the magnetic field enhancer in the antenna device provided by the embodiment of the present application.
  • FIG. 9 is a schematic diagram of a second structure of an antenna device provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a second structure of an electronic device provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a third structure of an electronic device provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a fourth structure of an electronic device provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a third structure of an antenna device provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of the principles of the common feeding structure of the near-field communication chip and the cellular communication chip in the antenna device provided by the embodiment of the present application.
  • FIG. 15 is a schematic diagram of a fourth structure of an antenna device provided by an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a casing of an electronic device provided by an embodiment of the present application.
  • FIG. 17 is a schematic diagram of a fifth structure of an electronic device provided by an embodiment of the present application.
  • An embodiment of the present application provides an electronic device.
  • the electronic device can be a smart phone, a tablet computer, etc., and can also be a game device, AR (Augmented Reality, augmented reality) device, a car device, a data storage device, an audio playback device, a video playback device, a notebook computer, or a desktop computing device. wait.
  • AR Augmented Reality, augmented reality
  • FIG. 1 is a schematic diagram of a first structure of an electronic device 20 provided in an embodiment of the present application.
  • the electronic device 20 includes a display screen 22 , a casing 24 , a circuit board 26 and a battery 28 .
  • the display screen 22 is disposed on the casing 24 to form a display surface of the electronic device 20 for displaying information such as images and texts.
  • the display screen 22 may be a liquid crystal display (Liquid Crystal Display, LCD) or an organic light-emitting diode display (Organic Light-Emitting Diode, OLED) or other type of display.
  • a cover plate may also be provided on the display screen 22 to protect the display screen 22 and prevent the display screen 22 from being scratched or damaged by water.
  • the cover plate may be a transparent glass cover plate, so that the user can observe the content displayed on the display screen 22 through the cover plate.
  • the cover plate may be a glass cover plate made of sapphire.
  • the casing 24 is used to form the outer contour of the electronic device 20 so as to accommodate the electronic devices and functional components of the electronic device 20 , and at the same time form a sealing and protection function for the electronic devices and functional components inside the electronic device.
  • the casing 24 and the display screen 22 can jointly form an accommodating space, and functional components such as a circuit board, a battery, a motor, and an acceleration sensor of the electronic device 20 can be arranged in the accommodating space.
  • the circuit board 26 is disposed in the accommodation space jointly formed by the casing 24 and the display screen 22 .
  • the circuit board 26 may be a main board of the electronic device 20 .
  • One or more functional components such as a processor, an earphone jack, an acceleration sensor, a gyroscope, and a motor may be integrated on the circuit board 26 .
  • the display screen 22 can be electrically connected to the circuit board 26 to control the display of the display screen 22 through the processor on the circuit board 26 .
  • the battery 28 is disposed in the accommodation space formed by the casing 24 and the display screen 22 . Meanwhile, the battery 28 is electrically connected to the circuit board 26 , so that the battery 28 supplies power to the electronic device 20 .
  • the circuit board 26 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 28 to the various electronic components of the electronic device 20 .
  • An antenna device is also provided in the electronic device 20 .
  • the antenna device is used to realize the wireless communication function of the electronic device 20, for example, it can be used to realize the near field communication (Near Field Communication, NFC) function.
  • some components of the antenna device may be integrated on the circuit board 26 , for example, a signal processing chip and a signal processing circuit in the antenna device may be integrated on the circuit board 26 .
  • some components of the antenna device may also be directly arranged inside the electronic device 20 , for example, a radiator or a conductor structure used by the antenna device for radiating signals may be directly arranged inside the electronic device 20 .
  • FIG. 2 is a schematic structural diagram of a first type of antenna device 40 provided in an embodiment of the present application.
  • the antenna device 40 includes an antenna coil 42 , a conductor structure 44 and an antenna radiator 46 .
  • the antenna coil 42 may be a coil formed by winding a metal material, such as a coil formed by winding a material such as copper or aluminum.
  • the number of turns of the antenna coil 42 is multi-turns, that is, multiple loops are formed.
  • the specific number of turns can be set according to actual needs, for example, it can be 10 turns, 20 turns, etc.
  • FIG. 3 is a schematic structural diagram of the antenna coil 42 of the antenna device provided by the embodiment of the present application.
  • the antenna coil 42 has an axis P, which can be understood as the center line of the antenna coil 42 .
  • the antenna coil 42 includes a first coil portion 422 and a second coil portion 424 located on both sides of the axis P. Wherein, one tap is reserved for the first coil part 422 , and one tap is reserved for the second coil part 424 .
  • the conductor structure 44 may be a structure formed of a metal material, for example, a structure formed of a material such as copper or aluminum. In some embodiments, the conductor structure 44 may be formed by a metal structure in the electronic device 20 or a metal line on the circuit board 26 . Wherein, the conductor structure 44 is electrically connected to the first coil part 422 , for example, is electrically connected to the first coil part 422 through a tap reserved by the first coil part 422 .
  • the antenna radiator 46 can also be a structure formed of metal materials, for example, a structure formed of materials such as copper and aluminum. In some embodiments, the antenna radiator 46 may also be formed by a metal structure in the electronic device 20 or a metal circuit on the circuit board 26 . Wherein, the antenna radiator 46 is electrically connected to the second coil part 424 , for example, is electrically connected to the second coil part 424 through a tap reserved for the second coil part 424 .
  • the antenna radiator 46 is used to transmit the first excitation signal, so as to radiate the wireless signal corresponding to the first excitation signal to the outside, so as to realize the wireless communication function corresponding to the first excitation signal.
  • the first excitation signal may include at least one of a cellular communication excitation signal, a GPS (Global Positioning System, Global Positioning System) communication excitation signal, and a Wi-Fi (Wireless Fidelity, Wireless Fidelity) communication excitation signal.
  • the antenna coil 42 , the conductor structure 44 and the antenna radiator 46 are jointly used to transmit the second excitation signal, so as to radiate the wireless signal corresponding to the second excitation signal to the outside, thereby realizing the wireless communication function corresponding to the second excitation signal.
  • the second activation signal may be a Near Field Communication (NFC) activation signal.
  • NFC Near Field Communication
  • the conductor structure 44 when the antenna coil 42, the conductor structure 44, and the antenna radiator 46 transmit the second excitation signal, the conductor structure 44 generates the first magnetic field, and the first coil part 422 generates the second magnetic field.
  • Both the first magnetic field and the second magnetic field can be understood is the radiation field of the wireless signal corresponding to the second excitation signal.
  • the direction of the current in the conductor structure 44 is opposite to the direction of the current in the first coil portion 422 , so that the direction of the first magnetic field is opposite to that of the second magnetic field, so that the first magnetic field and the second magnetic field at least partially cancel each other out.
  • the antenna radiator 46 can be used to transmit both the first excitation signal and the second excitation signal to achieve two different communication functions, so different communication functions can be realized for the antenna radiator 46.
  • the antenna radiator 46 In order to reduce the number of antenna radiators in the antenna device 40, simplify the structure of the antenna device 40, and reduce the layout space occupied by the antenna radiators.
  • the antenna coil 42 forms a plurality of loop loops, when the second excitation signal is transmitted, the direction of the second magnetic field generated by the first coil part 422 is different from the direction of the magnetic field generated by the second coil part 424.
  • the magnetic field generated by the second coil part 424 can be recorded as a third magnetic field, and the third magnetic field is an effective magnetic field. Therefore, the second magnetic field and the third magnetic field will weaken each other, resulting in weakening of the effective magnetic field formed by the antenna coil 42 and weakening of the wireless signal corresponding to the second excitation signal radiated from the antenna coil 42 to the outside.
  • the first magnetic field generated by the conductor structure 44 and the second magnetic field generated by the first coil part 422 at least partly cancel each other out that is, the first magnetic field can weaken the second magnetic field, thereby reducing the The weakening effect of the second magnetic field on the third magnetic field generated by the second coil part 424, that is, reducing the weakening effect on the effective magnetic field, can enhance the strength of the effective magnetic field formed by the antenna coil 42 and improve the external transmission of the antenna coil 42.
  • the intensity of the wireless signal corresponding to the radiated second excitation signal can enhance the strength of the effective magnetic field formed by the antenna coil 42 and improve the external transmission of the antenna coil 42.
  • the second excitation signal is an NFC excitation signal
  • the magnetic field strength when the antenna coil 42 radiates NFC signals to the outside world can be improved, that is, the radiation of the antenna device 40 to the outside world can be improved.
  • the strength of the NFC signal so the stability of NFC communication can be improved, and the stability of NFC card swiping can be improved.
  • the antenna radiator 46 when transmitting the second excitation signal, can also generate a magnetic field, such as a fourth magnetic field, and the antenna radiator 46 can radiate the wireless signal corresponding to the second excitation signal to the outside through the fourth magnetic field, such as NFC Signal. Therefore, in the embodiment of the present application, the NFC signal can be radiated to the outside world through the position of the antenna coil 42, and the NFC signal can be radiated to the outside world through the position of the antenna radiator 46, so the coverage of the NFC signal can be increased, and the NFC function can be increased. Card area. During the user's use of the electronic device 20 , the user can realize the NFC card swiping function through different parts of the electronic device 20 , so the convenience of the electronic device 20 can be improved.
  • a magnetic field such as a fourth magnetic field
  • FIG. 4 is a schematic diagram of the current when the antenna device 40 according to the embodiment of the present application transmits the second excitation signal.
  • the antenna device 40 includes a near field communication chip 62, and the near field communication chip 62 can provide the second excitation signal.
  • the antenna device 40 transmits the second excitation signal, currents will be formed in the conductor structure 44 , the first coil part 422 , the second coil part 424 and the antenna radiator 46 , as shown by the dotted line in FIG. 4 .
  • the current in the conductor structure 44 can be marked as I1
  • the current in the first coil part 422 can be marked as I2
  • the current in the second coil part 424 can be marked as I3
  • the current in the antenna radiator 46 can be Denote as I 4 . It can be understood that the direction of the current I 2 is opposite to that of the current I 3 .
  • the positions of the conductor structure 44 and the antenna coil 42 can be set so that the conductor structure 44 is arranged opposite to the first coil part 422 of the antenna coil 42, and when the antenna device 40 transmits the second excitation signal, The direction of the current I 1 in the conductor structure 44 is opposite to the direction of the current I 2 in the first coil part 422 . At this time, the direction of the first magnetic field generated by the conductor structure 44 is opposite to the direction of the second magnetic field generated by the first coil part 422 . Moreover, since the conductor structure 44 is disposed opposite to the first coil part 422 , the first magnetic field and the second magnetic field are in the same area, so that the first magnetic field and the second magnetic field can at least partially cancel each other out.
  • the antenna coil 42 is a multi-turn coil
  • the first coil part 422 includes multiple lines, and each line can generate a magnetic field when transmitting the second excitation signal, and the overall magnetic field generated by the multiple lines is the above-mentioned first Two magnetic fields.
  • the width of the conductor structure 44 along the direction of current transmission is greater than or equal to the width of the first coil part 422 along the direction of current transmission, so that the magnetic field generated by the conductor structure 44 is consistent with that of the first coil part 422
  • the magnetic fields generated by each line are opposite and in opposite directions, so that the magnetic field generated by the conductor structure 44 can cancel the magnetic field generated by each line of the first coil part 422, so as to weaken the second magnetic field generated by the first coil part 422 to the greatest extent.
  • the magnetic field prevents the second magnetic field from weakening the third magnetic field generated by the second coil part 424 .
  • the strength of the effective magnetic field formed by the antenna coil 42 can be maximized, and the strength of the wireless signal corresponding to the second excitation signal radiated from the antenna coil 42 to the outside can be increased, for example, the strength of the NFC signal can be enhanced.
  • FIG. 5 is a schematic structural diagram of the antenna coil 42 and the conductor structure 44 of the antenna device provided in the embodiment of the present application.
  • the conductor structure 44 includes a first conductor segment 442 and a second conductor segment 444 connected to the first conductor segment 442 .
  • the first coil part 422 includes a first portion 4222 connected to the first portion 4222 and a second portion 4224 connected to the first conductor segment 442 . It should be noted that the connection between the second part 4224 and the first part 4222 can be understood as that multiple lines of the second part 4224 are sequentially connected with multiple lines of the first part 4222 .
  • the first conductor segment 442 is arranged opposite to the first part 4222, and the direction of the current in the first conductor segment 442 is opposite to the direction of the current in the first part 4222, so that the direction of the magnetic field generated by the first conductor segment 442 is the same as that generated by the first part 4222.
  • the directions of the magnetic fields are opposite, so that the two can at least partially cancel.
  • the second conductor segment 444 is arranged opposite to the second part 4224, and the direction of the current in the second conductor segment 444 is opposite to the direction of the current in the second part 4224, so that the direction of the magnetic field generated by the second conductor segment 444 is opposite to that of the second part 4224.
  • the directions of the generated magnetic fields are opposite so that the two can also at least partly cancel out.
  • the first conductor segment 442 and the second conductor segment 444 may form an "L" shape, and the first part 4222 and the second part 4224 may also form an "L” shape. Therefore, the conductor structure 44 and the first coil part 422 can form an "L" shape as a whole, which is beneficial to the structural stacking of the antenna device 40 in the electronic device 20, and is also convenient for avoiding other devices in the electronic device 20.
  • the rear camera of the device 20 is avoided, so that the positions of the rear camera and the antenna device 40 are easier to design.
  • the antenna device 40 further includes a first flexible printed circuit (FPC).
  • FPC first flexible printed circuit
  • the first FPC 50 includes an antenna coil 42 and a conductor structure 44.
  • the antenna coil 42 and the conductor structure 44 are respectively located on two opposite surfaces of the first FPC 50.
  • the first FPC 50 can be arranged on the main board support, and the main board support is a support formed of non-metallic material, such as a plastic support.
  • the conductor structure 44 can be located on the surface of the first FPC 50 close to the mainboard support, and the antenna coil 42 can be located on the surface of the first FPC 50 away from the mainboard support.
  • a flexible substrate 48 is disposed between the antenna coil 42 and the conductor structure 44 .
  • the flexible substrate 48 has two opposing surfaces 482,484.
  • the antenna coil 42 can be disposed on the surface 482
  • the conductor structure 44 can be disposed on the surface 484 .
  • a via hole 486 may be provided on the flexible substrate 48 , and the via hole 486 runs through the two surfaces 482 , 484 of the flexible substrate 48 .
  • a conductor may be disposed in the via hole 486 , for example, copper may be plated in the via hole 486 .
  • the conductor structure 44 is electrically connected to the first coil part 422 through the conductor in the via hole 486 .
  • the conductive structure 44 is a metal circuit disposed on the surface of the flexible substrate 48 , for example, a printed circuit, such as a copper printed circuit, may be formed on the surface 484 of the flexible substrate 48 , and the conductive structure 44 is formed by the printed circuit.
  • a printed circuit such as a copper printed circuit
  • the antenna coil 42 is a multi-turn metal circuit, such as a multi-turn ring metal circuit, disposed on the surface of the flexible substrate 48 .
  • a multi-turn metal circuit such as a multi-turn ring metal circuit
  • multiple turns of printed circuits such as multi-turned circular copper printed circuits, may be formed on the surface 482 of the flexible substrate 48 , and the antenna coil 42 is formed by the multi-turned printed circuits.
  • the antenna device 40 further includes a magnetic field enhancer 70 .
  • FIG. 8 is a schematic diagram of the laminated structure of the first flexible circuit board 50 and the magnetic field enhancer 70 in the antenna device provided by the embodiment of the present application.
  • the magnetic field enhancer 70 is stacked with the first flexible circuit board 50 .
  • the magnetic field enhancer 70 can be disposed between the first flexible circuit board 50 and the main board support.
  • the first flexible circuit board 50 can be pasted on the magnetic field enhancing body 70, and the magnetic field enhancing body 70 can be pasted on the main board bracket.
  • the magnetic field enhancer 70 is used to enhance the strength of the magnetic field generated when the antenna coil 42 and the conductor structure 44 transmit the second excitation signal, thereby enhancing the strength of the NFC signal radiated from the antenna device 40 to the outside and improving the stability of NFC communication.
  • the magnetic field enhancer 70 is made of ferrite.
  • the magnetic field enhancer 70 may be a thin layer formed of ferrite.
  • FIG. 9 is a second schematic structural diagram of an antenna device 40 provided in an embodiment of the present application.
  • the antenna radiator 46 includes a first radiation section 462 and a second radiation section 464 .
  • the second radiating section 464 is electrically connected to the first radiating section 462 .
  • the first radiating section 462 is electrically connected to the antenna coil 42 , for example, is electrically connected to the second coil part 424 .
  • the first radiation section 462 is used to transmit the first sub-stimulation signal, and the first sub-stimulation signal may include, for example, at least one of a cellular communication excitation signal, a GPS communication excitation signal, and a Wi-Fi communication excitation signal.
  • the second radiation section 464 is used to transmit the second sub-stimulation signal, and the second sub-stimulation signal may also include at least one of a cellular communication excitation signal, a GPS communication excitation signal, and a Wi-Fi communication excitation signal, for example.
  • the first sub-excitation signal and the second sub-excitation signal may be different types of excitation signals.
  • the first sub-stimulation signal may be a GPS communication excitation signal
  • the second sub-stimulation signal may be a cellular communication excitation signal.
  • the first sub-excitation signal and the second sub-excitation signal may also be excitation signals of the same type.
  • both the first sub-excitation signal and the second sub-excitation signal may be cellular communication excitation signals, but the frequencies of the two are different.
  • the first sub-excitation signal is a high-frequency cellular communication excitation signal
  • the second sub-excitation signal is a mid-low frequency Cellular communication stimulus signal.
  • FIG. 10 is a second schematic structural diagram of an electronic device 20 provided in an embodiment of the present application.
  • the antenna device 40 includes IC1 642 and IC2 644.
  • IC1 642 is electrically connected with the first radiating section 462, and is used for feeding the first sub-excitation signal to the first radiating section 462.
  • IC2 644 is electrically connected to the second radiation section 464, and is used to feed the second sub-excitation signal to the second radiation section 464.
  • the antenna device 40 also includes a first isolation circuit 52 .
  • the first radiating section 462 is electrically connected to the second radiating section 464 through the first isolation circuit 52 .
  • the first isolation circuit 52 is used to isolate the first sub-stimulation signal transmitted by the first radiating section 462 from the second sub-stimulation signal transmitted by the second radiating section 464 to prevent the two from interfering with each other.
  • the first isolation circuit 52 may include elements such as capacitors and inductors, or a circuit composed of any series or parallel connections of capacitors and inductors.
  • the first isolation circuit 52 may include an inductor with a large inductance value, and its specific inductance value may be set according to actual conditions.
  • the electronic device 20 further includes a camera 80 .
  • FIG. 11 is a schematic diagram of a third structure of an electronic device 20 provided by an embodiment of the present application.
  • the camera 80 may be a rear camera of the electronic device 20 .
  • the camera 80 may be disposed outside the loop formed by the conductor structure 44 , the antenna coil 42 and the antenna radiator 46 .
  • the camera 80 can be kept away from the loop formed by the conductor structure 44 , the antenna coil 42 and the antenna radiator 46 , so as to avoid metal elements in the camera 80 from interfering with the antenna device 40 .
  • FIG. 12 is a fourth schematic structural diagram of an electronic device 20 provided in an embodiment of the present application.
  • the camera 80 may be disposed within the loop formed by the conductor structure 44 , the antenna coil 42 and the antenna radiator 46 . Therefore, it is possible to prevent the camera 80 and the antenna device 40 from occupying a relatively large layout space, which is beneficial to the internal structure layout of the electronic device 20 .
  • FIG. 13 is a schematic diagram of a third structure of an antenna device 40 provided in an embodiment of the present application.
  • the antenna device 40 includes a near field communication (NFC) chip 62 and a cellular communication chip 64 .
  • NFC near field communication
  • the near field communication chip 62 is used for providing near field communication (NFC) excitation signals.
  • the near field communication chip 62 includes a first differential signal terminal 622 and a second differential signal terminal 624, wherein the first differential signal terminal 622 can be a positive (+) port of the NFC chip 62, and the second differential signal terminal 624 can be an NFC chip 62 negative (-) port.
  • the polarities of the first differential signal terminal 622 and the second differential signal terminal 624 can also be interchanged, that is, the first differential signal terminal 622 can be the negative (-) port of the NFC chip 62, and the second differential signal terminal 624 may be the positive (+) port of the NFC chip 62 .
  • the first differential signal end 622 is electrically connected to the conductor structure 44
  • the second differential signal end 624 is electrically connected to the antenna radiator 46, so as to feed the NFC excitation signal to the conductive loop formed by the conductor structure 44, the antenna coil 42, and the antenna radiator 46. . Therefore, the conductor structure 44, the antenna coil 42, and the antenna radiator 46 can jointly transmit the NFC excitation signal to radiate the NFC signal to the outside to realize the NFC function.
  • the cellular communication chip 64 is used to provide cellular communication excitation signals.
  • the cellular communication chip 64 is electrically connected to the antenna radiator 46 to feed the cellular communication excitation signal to the antenna radiator 46 . Therefore, the antenna radiator 46 can transmit the cellular communication excitation signal, and radiate the cellular communication signal to the outside to realize cellular communication functions, such as 4G, 5G and other communication functions.
  • the second differential signal terminal 624 of the NFC chip 62 and the cellular communication chip 64 are electrically connected to the antenna radiator 46 through the same feeding structure 66, that is, the NFC chip 62 and the cellular communication chip 64 share a power feeding structure 66 , the NFC chip 62 , the cellular communication chip 64 , and the antenna radiator 46 are all connected to the feeding structure 66 .
  • the feed structure 66 may be a metal shrapnel, such as a copper shrapnel.
  • the cellular communication chip 64 may include the aforementioned IC1 642 and IC2 644. At this point, the NFC chip 62 can share power with the IC2 644.
  • both the NFC chip 62 and the cellular communication chip 64 can be set on the main board of the electronic device 20 .
  • the circuit used for electrical connection in the antenna device 40 may also be arranged on the main board of the electronic device 20 .
  • the antenna radiator 46 can be electrically connected to the circuit on the motherboard through the metal shrapnel, so as to realize the electrical connection with other electronic components.
  • the antenna radiator 46 includes a first radiating section 462 and a second radiating section 464
  • the first radiating section 462 and the second radiating section 464 can be electrically connected to the circuit on the main board through the metal shrapnel respectively, so as to be connected to the first radiating section 462 and the second radiating section 464 on the main board.
  • An isolation circuit 52 makes the electrical connection.
  • the metal shrapnel on the one hand, the electrical connection between the antenna radiator 46 and the electronic components on the motherboard can be realized, and on the other hand, the length of the antenna radiator 46 can be indirectly increased, so as to facilitate and flexibly adjust the antenna resonance.
  • FIG. 14 is a schematic diagram of the principle of the common feeding structure of the near field communication chip 62 and the cellular communication chip 64 in the antenna device provided by the embodiment of the present application.
  • the cellular communication chip 64 may include a feed provided on the motherboard.
  • the cellular communication chip 64 is electrically connected to the feed structure 66 through the inductor L1, the capacitor C4, and the capacitor C5 in sequence.
  • the connection between the cellular communication chip 64 and the inductor L1 is grounded through the capacitor C1, and the connection between the inductor L1 and the capacitor C4 is grounded in series through the capacitors C2 and C3.
  • the inductor L2 is connected in parallel with the capacitor C4 and the capacitor C5. Wherein, the inductor L1 , the inductor L2 , the capacitor C1 , the capacitor C2 , the capacitor C3 , the capacitor C4 and the capacitor C5 can be used to tune and match the cellular communication excitation signal provided by the cellular communication chip 64 .
  • the near field communication chip (NFC chip) 62 is electrically connected to the feeding structure 66 through the inductor L4 and the inductor L3 in sequence. Between the inductor L4 and the inductor L3 is grounded through the capacitor C6. Wherein, the inductor L3 and the capacitor C6 can be used to tune and match the NFC excitation signal provided by the NFC chip 62 .
  • the inductance L4 can be used to realize isolation between the cellular communication excitation signal and the NFC excitation signal. In practical applications, the inductance value of the inductor L4 can be set larger, for example, it can be set to 58N.
  • FIG. 15 is a schematic diagram of a fourth structure of an antenna device 40 provided in an embodiment of the present application.
  • the antenna device 40 also includes a second isolation circuit 54 and a third isolation circuit 56 .
  • the antenna radiator 46 is electrically connected to the antenna coil 42 through the second isolation circuit 54 , specifically to the second coil portion 424 of the antenna coil 42 .
  • the second differential signal terminal 624 is electrically connected to the antenna radiator 46 through the third isolation circuit 56 .
  • the second isolation circuit 54 and the third isolation circuit 56 are used to isolate the second excitation signal transmitted by the antenna coil 42, the conductor structure 44, and the antenna radiator 46 from the first excitation signal transmitted by the antenna radiator 46,
  • the NFC excitation signal is isolated from the cellular communication excitation signal to prevent the two from interfering with each other.
  • both the second isolation circuit 54 and the third isolation circuit 56 may include components such as capacitors and inductors, or may include circuits composed of any series or parallel connections of capacitors and inductors.
  • both the second isolation circuit 54 and the third isolation circuit 56 may include inductors with relatively large inductance values, and the specific inductance values thereof may be set according to actual conditions.
  • the antenna assembly 40 further includes a fourth isolation circuit 58 .
  • the cellular communication chip 64 is electrically connected to the antenna radiator 46 through the fourth isolation circuit 58 .
  • the fourth isolation circuit 58 is used to isolate the first excitation signal transmitted by the antenna radiator 46 from the second excitation signal transmitted by the antenna coil 42, the conductor structure 44, and the antenna radiator 46, so as to prevent the two from interfering with each other. .
  • the fourth isolation circuit 58 may also include components such as capacitors and inductors, or a circuit composed of any series or parallel connections of capacitors and inductors.
  • the fourth isolation circuit 58 may include an inductor with a relatively large inductance value, and its specific inductance value may be set according to actual conditions.
  • FIG. 16 is a schematic structural diagram of a housing 24 of an electronic device provided in an embodiment of the present application.
  • the casing 24 includes a metal frame 242 and a rear cover 244 , and the metal frame 242 and the rear cover 244 can be connected through a structure such as a middle frame.
  • the metal frame 242 forms the outer frame of the electronic device 20
  • the metal frame 242 may be a frame formed of materials such as magnesium and aluminum, or may be an alloy frame.
  • the back cover 244 is a non-metal back cover, such as a back cover made of non-metal material such as plastic or glass.
  • Metal branches 2422 are formed on the metal frame 242 .
  • broken seams 2424 and 2426 can be formed on the metal frame 242
  • metal branches 2422 can be formed through the broken seams 2424 and 2426 .
  • the above-mentioned antenna radiator 46 may be formed by the metal branch 2422 .
  • the antenna radiator 46 includes the first radiating section 462 and the second radiating section 464
  • two metal branches can be formed on the metal frame 242, wherein one metal branch forms the first radiating section 462, and the other metal branch forms the The second radiating section 464 .
  • FIG. 17 is a fifth structural schematic diagram of an electronic device 20 provided in an embodiment of the present application.
  • the electronic device 20 includes a second flexible printed circuit (second FPC) 32 .
  • the second FPC 32 can be, for example, an FPC of a display screen, an FPC of a camera, or an FPC of a motor, or the second FPC 32 can also be an independent FPC for radiating wireless signals.
  • the second FPC 32 is provided with metal lines, such as copper printed lines.
  • the metal lines provided on the second FPC 32 can form the antenna radiator 46.
  • the antenna radiator 46 includes the first radiating section 462 and the second radiating section 464
  • two second FPCs can be set in the electronic device 20, wherein one second FPC forms the first radiating section 462, and the other second FPC The two FPCs form the second radiating section 464 .

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Abstract

L'invention concerne un appareil d'antenne et un dispositif électronique. L'appareil d'antenne comprend : une bobine d'antenne, comprenant une première partie de bobine et une seconde partie de bobine, qui sont situées sur deux côtés de l'axe de la bobine d'antenne ; une structure conductrice ; et un élément rayonnant d'antenne destiné à transmettre un premier signal d'excitation, la bobine d'antenne, la structure conductrice et l'élément rayonnant d'antenne étant conjointement utilisés pour transmettre un second signal d'excitation, et lorsque le second signal d'excitation est transmis, la direction d'un premier champ magnétique généré par la structure conductrice est opposée à la direction d'un second champ magnétique généré par la première partie de bobine.
PCT/CN2022/137228 2022-01-17 2022-12-07 Appareil d'antenne et dispositif électronique WO2023134337A1 (fr)

Applications Claiming Priority (2)

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CN202210051193.8A CN114389013A (zh) 2022-01-17 2022-01-17 天线装置及电子设备
CN202210051193.8 2022-01-17

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WO2023134337A1 true WO2023134337A1 (fr) 2023-07-20

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CN114389013A (zh) * 2022-01-17 2022-04-22 Oppo广东移动通信有限公司 天线装置及电子设备
CN114530694B (zh) * 2022-04-24 2022-07-05 云谷（固安）科技有限公司 无线通信结构、显示面板和无线通信装置
CN117954830A (zh) * 2022-10-20 2024-04-30 Oppo广东移动通信有限公司 可折叠电子设备

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CN114389013A (zh) * 2022-01-17 2022-04-22 Oppo广东移动通信有限公司 天线装置及电子设备

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CN113054406A (zh) * 2019-12-26 2021-06-29 Oppo广东移动通信有限公司 天线装置及电子设备
CN212874746U (zh) * 2020-07-23 2021-04-02 Oppo广东移动通信有限公司 电子设备
CN212517503U (zh) * 2020-07-29 2021-02-09 Oppo广东移动通信有限公司 天线装置及电子设备
CN114389013A (zh) * 2022-01-17 2022-04-22 Oppo广东移动通信有限公司 天线装置及电子设备

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