WO2021212975A1 - 天线装置及电子设备 - Google Patents

天线装置及电子设备 Download PDF

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Publication number
WO2021212975A1
WO2021212975A1 PCT/CN2021/076016 CN2021076016W WO2021212975A1 WO 2021212975 A1 WO2021212975 A1 WO 2021212975A1 CN 2021076016 W CN2021076016 W CN 2021076016W WO 2021212975 A1 WO2021212975 A1 WO 2021212975A1
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WO
WIPO (PCT)
Prior art keywords
conductor
conductor segment
magnetic
conductive member
antenna device
Prior art date
Application number
PCT/CN2021/076016
Other languages
English (en)
French (fr)
Inventor
贾玉虎
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
Priority claimed from CN202020641216.7U external-priority patent/CN211605406U/zh
Priority claimed from CN202010335728.5A external-priority patent/CN111342228A/zh
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
Priority to EP21791747.5A priority Critical patent/EP4142049A4/en
Publication of WO2021212975A1 publication Critical patent/WO2021212975A1/zh
Priority to US17/972,066 priority patent/US20230040011A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H04B5/26—
    • H04B5/43—

Definitions

  • This application relates to the field of electronic technology, in particular to an antenna device and electronic equipment.
  • NFC Near Field Communication
  • the space in the electronic device is limited, and the NFC antenna needs to meet the demand for miniaturization.
  • the structure of the miniaturized NFC antenna is limited by the space in the electronic device, which causes the miniaturized NFC antenna to cancel out the magnetic field generated by the coil in the area where the spatial magnetic field overlaps, which reduces the communication performance of the electronic device and reduces the communication distance.
  • the present application provides an antenna device and electronic equipment with better communication performance.
  • an embodiment of the present application provides an antenna device, including a dielectric substrate; an antenna coil, the antenna coil is provided on the dielectric substrate, the antenna coil includes a winding center portion and a winding center portion. At least one first conductor section and at least one second conductor section on opposite sides, the first conductor section is connected in series with the second conductor section; and a conductive member, the conductive member is provided on the dielectric substrate, the The conductive member is arranged opposite to the antenna coil, and the orthographic projection of the conductive member on the dielectric substrate covers at least part of the orthographic projection of the first conductor segment on the dielectric substrate; the conductive member is electrically connected to the In the first conductor section, the magnetic field generated by the conductive element is used to offset the magnetic field generated by the first conductor section.
  • an embodiment of the present application also provides an electronic device, the electronic device includes a camera module and the antenna device, the antenna device is arranged around the camera module or the antenna device and the antenna device The camera module is set relative to each other.
  • the conductive element can generate a magnetic field, which can be used to cancel the magnetic field generated by the first conductor section.
  • the first conductor section is in the center of the winding.
  • the magnetic field on the side of the second conductor section is weakened, thereby reducing the cancellation of the magnetic field generated by the first conductor section and the second conductor section in the area where the two magnetic fields overlap, enhancing the magnetic field strength around the second conductor section, and then using the second conductor section as the main radiation It can extend the communication distance and improve the communication performance of electronic equipment.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an electronic device according to Embodiment 2 of the present application.
  • FIG. 3 is a schematic structural diagram of an electronic device provided in Embodiment 3 of the present application.
  • FIG. 4 is a schematic structural diagram of a wireless device provided in Embodiment 1 of the present application.
  • Fig. 5 is a cross-sectional view of the wireless device shown in Fig. 4 along the line A-A in an embodiment
  • FIG. 6 is a schematic structural diagram of a wireless device provided in Embodiment 2 of the present application.
  • FIG. 7 is a schematic structural diagram of a wireless device provided in Embodiment 3 of the present application.
  • Fig. 8 is a cross-sectional view of the wireless device shown in Fig. 4 along the line A-A in another embodiment
  • FIG. 9 is a schematic structural diagram of a wireless device provided in Embodiment 4 of the present application.
  • FIG. 10 is a schematic structural diagram of a wireless device provided in Embodiment 5 of the present application.
  • FIG. 11 is a schematic structural diagram of a wireless device provided by Embodiment 6 of the present application.
  • FIG. 12 is a schematic structural diagram of a wireless device provided in Embodiment 7 of the present application.
  • Fig. 13 is a cross-sectional view of the wireless device shown in Fig. 12 along the line B-B in an embodiment
  • FIG. 14 is a cross-sectional view of the wireless device shown in FIG. 12 along the line B-B in another embodiment
  • FIG. 15 is a schematic structural diagram of a wireless device provided by Embodiment 8 of the present application.
  • FIG. 16 is a schematic cross-sectional view of a wireless device provided with a shielding member according to an embodiment of the present application.
  • an embodiment of the present application provides an electronic device 100 with a near field communication function.
  • the electronic device 100 may be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a notebook computer, a netbook, and a device with mobile communication functions such as a media player, a watch, a necklace, and glasses.
  • a mobile phone is taken as an example for description.
  • FIG. 1 is a schematic structural diagram of an electronic device 100 provided by an embodiment of the application.
  • the electronic device 100 is provided with an antenna device 10 and a camera module 20.
  • the electronic device 100 transmits data information between the antenna device 10 and an external device to realize a communication function.
  • the antenna device 10 is substantially rectangular.
  • the antenna device 10 can also be surrounded into a U-shape, L-shape, etc., to adapt to the interior of different electronic devices 100. Due to the increase of the camera module 20, the electronic device 100 is stacked inside The insufficient area and irregular shape enable the antenna device 10 to still have better performance when the internal space of the electronic device 100 is limited.
  • the shaped antenna device 10 can also be used to avoid other antenna modules or electronic devices in the electronic device 100.
  • antenna modules or electronic devices for example: face recognition module, ambient light sensor, distance sensor, iris recognition module, etc.
  • shape of the antenna device 10 in the present application includes but is not limited to the rectangular, U-shaped, and L-shaped listed above.
  • FIG. 4 is a schematic structural diagram of an antenna device 10 provided by an embodiment of the application.
  • the antenna device 10 includes a dielectric substrate 105, an antenna coil 102 and a conductive member 103.
  • the length direction of the antenna device 10 is defined as the X-axis direction.
  • the width direction of the antenna device 10 is defined as the Y-axis direction.
  • the thickness direction of the antenna device 10 is defined as the Z-axis direction.
  • the direction indicated by the arrow is the positive direction.
  • the symbols " ⁇ " and " ⁇ " in the figure indicate the direction of current flow.
  • C1 indicates the direction of the magnetic field generated by the current on the first conductive wire 122
  • C2 indicates the direction of the magnetic field generated by the current on the second conductive wire 124
  • C3 indicates the direction of the magnetic field generated by the current on the conductive element 103. Go into details again.
  • the dielectric substrate 105 is used to carry the antenna coil 102 and the conductive member 103.
  • the length, width, and thickness directions of the dielectric substrate 105 can refer to the X-axis, Y-axis, and Z-axis directions of the antenna device 10, respectively.
  • the dielectric substrate 105 may be a polyimide film (Polyimide Film, PI), which serves as a base material of a flexible printed circuit (FPC).
  • FPC flexible printed circuit
  • the dielectric substrate 105 may also be polyethylene terephthalate (PET) or the like.
  • the dielectric substrate 105 is rectangular, and the antenna coil 102 is enclosed in a rectangular shape.
  • the antenna coil 102 can be understood as a surrounding rectangular wire winding.
  • the antenna coil 102 is provided on the dielectric substrate 105. Specifically, the antenna coil 102 may be located on the surface of the dielectric substrate 105 or inside the dielectric substrate 105.
  • the antenna coil 102 can be formed on the dielectric substrate 105 by any of processes such as winding, printing, or etching.
  • the antenna coil 102 formed on the dielectric substrate 105 includes a winding central portion 120 and a first conductor segment 122 and a second conductor disposed on opposite sides of the winding central portion 120 Paragraph 124.
  • the winding central portion 120 refers to the area between the first conductor segment 122 and the second conductor segment 124.
  • the first conductor segment 122 and the second conductor segment 124 are illustrated by taking wire windings opposite to each other along the Y-axis direction as an example.
  • the first conductor segment 122 and the second conductor segment 124 may also be wire windings opposite to each other along the X-axis direction, or, as shown in FIG. 7, the first conductor segment 122 It includes a first sub-conductor segment 1220 and a second sub-conductor segment 1221, and the second conductor segment 124 includes a third sub-conductor segment 1240 and a fourth sub-conductor segment 1241.
  • first sub-conductor section 1220 and the third sub-conductor section 1240 are respectively disposed on opposite sides of the winding center along the Y-axis direction
  • the second sub-conductor section 1221 and the fourth sub-conductor section 1241 are respectively disposed on the X-axis direction. Winding center on opposite sides.
  • the first conductor segment 122 represents a conductive wire located at the winding center portion 120 facing the positive direction of the Y-axis.
  • the second conductor segment 124 represents a conductive wire that is located at the winding center portion 120 and is opposite to the Y axis.
  • the number of the first conductor segment 122 and the second conductor segment 124 may be one or more conductive wires, respectively.
  • the number of conductive lines included in the first conductor segment 122 and the second conductor segment 124 may be the same or different. It is understandable that the first conductor section 122 and the second conductor section 124 may be independent conductive wires or the first conductor section 122 and the second conductor section 124 may be different parts of the same conductive wire. In other words, the first conductor segment 122 and the second conductor segment 124 may be integrally formed or connected as a whole.
  • the current flowing in the antenna coil 102 flows as shown in FIG. 4.
  • I1 and I2 in FIG. 4 indicate the current flow directions of the first conductor segment 122 and the second conductor segment 124, respectively.
  • the antenna device 10 has a demand for miniaturization, and the distance between the first conductor segment 122 and the second conductor segment 124 is relatively short. Therefore, the magnetic fields generated by the first conductor segment 122 and the second conductor segment 124 have overlapping regions in space.
  • the directions of currents of the first conductor segment 122 and the second conductor segment 124 are opposite, so the directions of the generated magnetic fields are different, and they cancel each other out.
  • the direction of the magnetic field generated by the first conductor segment 122 is different from the direction of the magnetic field generated by the second conductor segment 124 means that the directions of the magnetic field generated by the first conductor segment 122 and the second conductor segment 124 are opposite or have an angle.
  • the conductive member 103 is provided on the dielectric substrate 105. Specifically, the conductive member 103 may also be formed on the dielectric substrate 105 by any one of processes such as winding, printing, or etching. Wherein, the conductive member 103 may be provided on the surface of the dielectric substrate 105 or inside the dielectric substrate. For example, the antenna coil 102 and the conductive member 103 may be respectively provided on the opposite surfaces of the dielectric substrate 105. Alternatively, the antenna coil 102 and the conductive member 103 are disposed inside the dielectric substrate 105, and the antenna coil 102 and the conductive member 103 are spaced apart. In one embodiment, the conductive member 103 is relatively close to the first conductor segment 122 and far away from the second conductor segment 124.
  • the conductive member 103 is arranged opposite to the antenna coil 102. In an embodiment, the conductive member 103 may be arranged opposite to the antenna coil 102 along the thickness direction of the dielectric substrate 105. It can be understood that, in other embodiments, the conductive member 103 may be disposed opposite to the antenna coil 102 along the length direction or the width direction of the dielectric substrate 105. In the embodiment of the present application, the conductive member 103 and the antenna coil 102 are arranged opposite to each other along the thickness direction of the dielectric substrate 105 as an example for description.
  • the first conductor segment 122 extends along the X-axis direction
  • the second conductor segment 124 extends along the X-axis direction
  • the first conductor segment 122 and the second conductor segment 124 are opposite to each other along the Y-axis direction.
  • the conductive member 103 extends along the Y-axis direction and is arranged opposite to the first conductor segment 122 along the Z-axis direction.
  • the first conductor section 122 may extend in the Y-axis direction
  • the second conductor section 124 may extend in the Y-axis direction
  • the first conductor section 122 and the second conductor section 124 may extend along the Y-axis direction.
  • the X-axis direction is opposite to each other, and the conductive member 103 can extend along the Y-axis direction and is opposite to the first conductor segment 122 along the Z-axis direction. Or, as shown in FIG.
  • the first sub-conductor section 1220 of the first conductor section 122 extends in the X-axis direction
  • the second sub-conductor section 1221 of the first conductor section 122 extends in the Y-axis direction
  • the second conductor section 124 The third sub-conductor segment 1240 extends along the X-axis direction
  • the fourth sub-conductor segment 1241 of the second conductor segment 124 extends along the Y-axis direction
  • the first sub-conductor segment 1220 and the third sub-conductor segment 1240 are arranged opposite to each other along the Y-axis direction
  • the second sub-conductor segment 1221 and the fourth sub-conductor segment 1241 are arranged opposite to each other along the X-axis direction.
  • the conductive member 103 may include a first conductive portion 130 and a second conductive portion 131.
  • the first conductive portion 130 extends along the X-axis direction and is connected to the The first sub-conductor section 1220 of the first conductor section 122 is disposed oppositely along the Z-axis direction, and the second conductive portion 131 extends in the Y-axis direction and is disposed opposite to the second sub-conductor section 1221 of the first conductor section 122.
  • the first conductive portion 130 and the second conductive portion 131 may be integrally formed, connected as a whole, or arranged at intervals. In the antenna device 10 shown in FIG.
  • the first conductive portion 130 is used to offset the magnetic field generated by the first sub-conductor section 1220, so as to enhance the strength of the magnetic field around the third sub-conductor section 1240, extend the communication distance, and improve the electronic equipment. Communication performance.
  • the second conductive portion 131 is used to offset the magnetic field generated by the second sub-conductor segment 1221 to enhance the magnetic field strength around the fourth sub-conductor segment 1241, extend the communication distance, and improve the communication performance of the electronic device.
  • the conductive member 103 is electrically connected to the antenna coil 102.
  • the conductive element 103 is connected in series with the antenna coil 102.
  • the conductive member 103 has a current as shown by I3 in FIG. 5.
  • the current flowing on the conductive member 103 is opposite to the current flowing on the first conductor section 122, so that the magnetic field generated by the current on the conductive member 103 and the magnetic field generated by the current on the first conductor section 122 at least partially cancel out.
  • the current flow direction I1 on the first conductor segment 122 is reversed along the X axis.
  • the current flowing direction I1 on the conductive member 103 is along the positive direction of the X axis.
  • the first conductor segment 122 generates a magnetic field along the direction C1 in FIG. 5 on the side of the dielectric substrate 105 away from the antenna coil 102.
  • the conductive member 103 generates a magnetic field along the direction C3 in FIG. 5 on the side of the dielectric substrate 105 away from the antenna coil 102.
  • the second conductor segment 124 generates a magnetic field along the C2 direction in FIG. 5 on the side of the dielectric substrate 105 away from the antenna coil 102.
  • the direction of the magnetic field generated by the conductive member 103 and the first conductor section 122 is opposite, so that it can cancel the magnetic field generated by the first conductor section 122, thereby weakening the magnetic field generated by the first conductor section 122 against the magnetic field generated by the second conductor section 124. Impact.
  • the current flowing on the conductive element 103 is the same as the current flowing on the first conductor segment 122, so that the magnetic field generated by the current on the conductive element 103 and the magnetic field generated by the current of the first conductor segment 122 at least partially cancel out.
  • the current flow direction I1 on the first conductor segment 122 is reversed along the X axis.
  • the direction of current flow on the conductive member 103 is reversed along the X axis.
  • the first conductor segment 122 generates a magnetic field along the C1 direction in FIG. 8 on the dielectric substrate 105.
  • the conductive member 103 generates a magnetic field along the C3 direction in FIG. 8 on the dielectric substrate 105.
  • the second conductor segment 124 generates a magnetic field along the C2 direction in FIG. 8 on the dielectric substrate 105.
  • the direction of the magnetic field generated by the conductive member 103 and the first conductor section 122 is opposite, so that it can cancel the magnetic field generated by the first conductor section 122, thereby weakening the magnetic field generated by the first conductor section 122 against the magnetic field generated by the second conductor section 124. Impact.
  • the conductive member 103 may be a conductive wire with conductive characteristics, such as a nano copper wire, a nano silver wire, and the like.
  • the conductive member 103 may also be a conductive substrate, such as a substrate made of metal, graphene, conductive polymer, and the like.
  • the conductive member 103 can generate a magnetic field, which can be used to cancel the magnetic field generated by the first conductor section 122.
  • the first conductor The magnetic field of the section 122 on the side of the winding center 120 is weakened, thereby reducing the magnetic field generated by the first conductor section 122 and the second conductor section 124 to cancel out in the overlapping area, enhancing the magnetic field strength around the second conductor section 124, and further improving the
  • the two conductor segments 124 serve as the main radiator to extend the communication distance and improve the communication performance of the electronic device 100.
  • the number of the first conductor segment 122 may be one or more.
  • the number of the second conductor segment 124 may be one or more.
  • the first conductor segment 122 is a conductive wire
  • the second conductor segment 124 is a conductive wire.
  • the antenna coil 102 includes a plurality of first conductive wires 122a.
  • the antenna coil 102 further includes a plurality of second conductive wires 124a. In the direction along the first conductor section 122 toward the second conductor section 124, that is, in the Y-axis direction, the width of the first conductive line 122a may be smaller than the width of the second conductive line 124a.
  • the first conductive wire 122a and the second conductive wire 124a are conductive wires with different diameters. Among them, the second conductive wire 124a is thicker, and the first conductive wire 122a is thinner.
  • the first conductor section 122 and the second conductor section 124 are conductive wires with different widths, so that the first conductor section can be reduced. 122 cancels the magnetic field of the second conductor segment 124.
  • the second conductor section 124 is relatively thick, and the magnetic field generated on the second conductor section 124 is strong, and can be used as a main radiator.
  • the antenna device 10 further includes a magnetic substrate 101.
  • the magnetic substrate 101 and the dielectric substrate 105 are arranged opposite to each other along the thickness direction of the antenna device 10.
  • the magnetic substrate 101 is located on the opposite side of the dielectric substrate 105 facing the Z axis.
  • the magnetic substrate 101 may be a ferrite core.
  • the orthographic projection of the magnetic substrate 101 on the plane where the antenna coil 102 is located covers at least a part of the second conductor segment 124.
  • the magnetic substrate 101 is substantially rectangular.
  • the orthographic projection of the magnetic substrate 101 on the plane where the antenna coil 102 is located extends to the first conductor segment 122 and the second conductor segment 124 in the Y-axis direction.
  • the plane where the antenna coil 102 is located is a plane parallel to the XY plane.
  • the projection of the first conductor segment 122 along the Z axis is close to one end of the magnetic substrate 101.
  • the projection of the second conductor segment 124 along the Z axis is close to the opposite end of the magnetic substrate 101.
  • the magnetic substrate 101 can be used to support the first conductor segment 122 and the second conductor segment 124.
  • the magnetic substrate 101 has a relatively low magnetoresistance, which can enhance the magnetic field generated by the first conductor segment 122 and the second conductor segment 124.
  • the magnetic substrate 101 includes a first magnetic region 110 and a second magnetic region 112.
  • the orthographic projection of the first magnetic region 110 on the plane where the antenna coil 102 is located covers a portion of the winding central portion 120.
  • the orthographic projection of the second magnetic region 112 on the plane where the antenna coil 102 is located is on the side of the second conductor segment 124 away from the winding center 120.
  • the projection of the second conductor segment 124 along the Z axis is located between the first magnetic area 110 and the second magnetic area 112.
  • the projection of the first conductor segment 122 along the Z axis is located outside the magnetic substrate 101.
  • the magnetic field on the side of the second conductor section 124 away from the winding center 120 can pass through the magnetic substrate 101.
  • the second conductor section can be strengthened. 124 the intensity of the magnetic field generated.
  • the first conductor segment 122 is far away from the magnetic substrate 112, and the magnetic field generated by the first conductor segment 122 passes through the magnetic substrate 101 less, thereby reducing the effect of the magnetic field generated by the first conductor segment 122 on the second conductor segment 124. The influence of the magnetic field.
  • the orthographic projection of the second magnetic area 112 on the plane where the antenna coil 102 is located may be greater than or equal to the orthographic projection of the first magnetic area 110 on the plane where the antenna coil 102 is located.
  • the orthographic projection of the second magnetic area 112 on the plane where the antenna coil 102 is located is greater than or equal to the orthographic projection of the first magnetic area 110 on the plane where the antenna coil 102 is located, which means that the area of the second magnetic area 112 on the XY plane is greater than or equal to the first magnetic area.
  • the orthographic projection of the second magnetic region 112 on the plane where the antenna coil 102 is located can be greater than or equal to the orthographic projection of the first magnetic region 110 on the plane where the antenna coil 102 is located, the second conductor segment 124 can be moved away from the side of the winding center 120 The magnetic field passing through the magnetic substrate 101 enhances the strength of the magnetic field generated by the second conductor segment 124 based on the low magnetic resistivity of the magnetic substrate 101.
  • the following embodiments illustrate the structure and position of the conductive member 103. It can be understood that the structure and position of the conductive member 103 of the present application include but are not limited to the following embodiments.
  • the conductive member 103 is close to the first conductor section 122 and is disposed opposite to the first conductor section 122 along the direction where the antenna coil 102 points to the magnetic substrate 101. In other words, the conductive member 103 is disposed opposite to the first conductor segment 122 in the Z-axis direction.
  • the direction of current flow on the conductive element 103 and the first conductive segment 122 is opposite, so that the direction of the magnetic field generated by the conductive element 103 on the magnetic substrate 101 is opposite to the direction of the magnetic field generated by the first conductive segment 122. Therefore, the magnetic field generated by the conductive member 103 on the magnetic substrate 101 cancels the magnetic field generated by the first conductor segment 122, and further weakens the magnetic permeability of the magnetic substrate 101 to the first conductor segment 122, thereby increasing the magnetic field of the second conductor segment 124 strength.
  • the conductive member 103 is located between the antenna coil 102 and the magnetic substrate 101.
  • the antenna coil 102, the conductive member 103, and the magnetic substrate 101 are sequentially along the Z-axis direction.
  • the direction of current flow on the first conductor segment 122 is reversed along the X axis.
  • the current flowing on the conductive member 103 is along the positive direction of the X-axis.
  • the direction of current flowing on the first conductor segment 122 is opposite to the direction of current flowing on the conductive member 103.
  • the magnetic field generated by the first conductor segment 122 on the magnetic substrate 101 is in the positive direction of the Y axis.
  • the magnetic field generated by the conductive member 103 on the magnetic substrate 101 is reversed along the Y axis. Therefore, on the magnetic substrate 101, the magnetic field generated by the conductive element 103 can cancel the magnetic field generated by the current on the first conductor section 122, thereby reducing the current on the first conductor section 122 against the second conductor section 124. The cancellation effect of the magnetic field generated by the current.
  • the conductive member 103 can also increase the magnetic field strength in the same direction as the magnetic field of the second conductor segment 124.
  • the conductive member 103 may also be located on the side of the antenna coil 102 away from the magnetic substrate 101.
  • the conductive member 103, the antenna coil 102, and the magnetic substrate 101 may be sequentially arranged along the Z axis.
  • the direction of the current flowing on the conductive element 103 is opposite to the direction of current flowing on the first conductor segment 122 so that the direction of the magnetic field generated by the conductive element 103 and the first conductor segment 122 on the magnetic substrate 101 is opposite.
  • the orthographic projection of the conductive element 103 on the plane where the antenna coil 102 is located covers the first conductor segment 122.
  • the projection of the conductive element 103 on the magnetic substrate 112 and the projection of the first conductor segment 122 on the magnetic substrate 101 at least partially overlap.
  • the projection of the conductive element 103 on the magnetic substrate 112 cover the projection of the first conductor segment 122 on the magnetic substrate 112, it is possible to ensure that the magnetic field of the conductive element 103 offsets the magnetic field of the first conductor segment 122, and improves the performance of the antenna device 10. reliability.
  • the antenna coil 102 and the magnetic substrate 112 are arranged along the XY plane.
  • the conductive member 103 and the first conductor segment 122 are disposed opposite to each other along the Z axis.
  • the first conductor segment 122 includes a plurality of conductive lines arranged side by side in the XY plane.
  • the conductive member 103 is a conductive substrate with a larger width than the first conductor segment 122. It can be understood that, in the XY plane, the area of the conductive member 103 is greater than or equal to the area of the first conductor segment 122.
  • the area of the conductive member 103 may be smaller than the area of the first conductor segment 122.
  • the area of the first conductor segment 122 refers to the cross-sectional area of a conductive wire in the XY plane.
  • the area of the first conductor section 122 represents the sum of the cross-sectional areas of the plurality of conductive wires and the gap area between the plurality of conductive wires in the XY plane.
  • the magnetic fields generated by the conductive element 103 and the first conductor segment 122 cancel each other out on the magnetic substrate 112, so that the first conductor can be reduced on the magnetic substrate 101.
  • the magnetic field of the conductor segment 122 affects the magnetic field of the second conductor segment 124.
  • the orthographic projection of the conductive member 103 on the plane where the antenna coil 102 is located is at least partially located at the winding center 120.
  • the conductive member 103 extends in the opposite direction toward the Z axis.
  • the area of the conductive member 103 on the XY plane is greater than or equal to the area of the first conductor segment 122 on the XY plane.
  • the antenna device 10 may further include an electrical connector 106.
  • the electrical connector 106 is provided on the dielectric substrate 105.
  • the electrical connection member 106 is located between the antenna coil 102 and the conductive member 103.
  • the electrical connection member 106 is used to connect the antenna coil 102 and the conductive member 103 so that the antenna coil 102 and the conductive member 103 are connected in series in the same circuit.
  • the manner in which the electrical connection member 106 is provided on the dielectric substrate 105 includes, but is not limited to, coating, etching, and imprinting techniques.
  • the electrical connector 106 includes a first electrical connector 106a and a second electrical connector 106b.
  • the first electrical connection member 106a electrically connects the conductive member 103 and the feeding end of the antenna coil 102.
  • the second electrical connection member 106a is used to electrically connect the first conductor segment 122 and the conductive member 103.
  • the circuit in the antenna device 10 can be reduced.
  • the currents on the antenna coil 102 and the conductive member 103 can be made the same, so as to avoid the waste caused by the excessive current on the conductive member 103, or the current on the conductive member 103.
  • the cancellation effect on the magnetic field of the first conductor segment 122 is weak.
  • the antenna coil 102 further includes a first power feeder 121 and a second power feeder 123.
  • the first power feeding portion 121 and the second power feeding portion 123 and the first conductor segment 122 and the second conductor segment 124 are located in the same plane (that is, the XY plane).
  • the first power feeder 121, the conductive member 103, the antenna coil 102, and the second power feeder 123 are serially connected in sequence. Specifically, one end of the first power feeder 121 is electrically connected to the first electrical connector 106a, an end of the first electrical connector 106a away from the first power feeder 121 is connected to the conductive member 103, and the conductive member 103 is away from the first electrical connector 106a.
  • the antenna device 10 further includes a shield 104.
  • the shield 104 refers to a medium having a magnetic permeability different from that of air.
  • the shield 104 causes the magnitude and direction of the magnetic field of the first conductor segment 122 to change, thereby forming a magnetic shield.
  • the shield 104 is a metal shield 104.
  • the metal shield 104 cuts the magnetic lines of induction in the magnetic field, and generates an induced current and an induced magnetic field to offset the current on the first conductor section 122. The change in the magnetic field produced by the current.
  • the shielding member 104 is located between the conductive member 103 and the first conductor segment 122, or the shielding member 104 is located between the conductive member 103 and the magnetic substrate 101.
  • the shielding element 104 is located between the conductive element 103 and the first conductor segment 122. That is, the antenna device 10 includes the first conductor segment 122, the shielding member 104, the conductive member 103, and the magnetic substrate 101 in order along the Z axis.
  • the shielding member 104 and the conductive member 103 may also be located on the same layer of the dielectric substrate 105, and an insulating material may be filled between the shielding member 104 and the conductive member 103. In other words, in the direction along the Z axis, the shield 104 is flush with the conductive member 103.
  • the shield 104 By setting the shield 104 to shield the magnetic field of the first conductor section 122, the magnetic field strength of the first conductor section 122 on the magnetic substrate 101 is further reduced, and the influence of the first conductor section 122 on the magnetic field generated by the current on the second conductor section 124 is reduced. Cancellation, thereby enhancing the strength of the magnetic field around the second conductor segment 124.

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Abstract

本申请提供了一种天线装置及电子设备。天线装置包括：介质基板、天线线圈及导电件。其中，天线线圈设于介质基板，天线线圈包括卷绕中心部及设于卷绕中心部相对两侧的至少一个第一导体段和至少一个第二导体段，第一导体段与第二导体段串联。导电件设于介质基板，导电件与天线线圈相对设置，且导电件在介质基板上的正投影覆盖至少部分第一导体段在介质基板上的正投影。导电件电连接第一导体段，导电件产生的磁场用于抵消第一导体段产生的磁场。本申请提供的天线装置中第二导体段作为主要辐射体具有较佳的通信性能。

Description

天线装置及电子设备 技术领域
本申请涉及电子技术领域，具体涉及一种天线装置及电子设备。
背景技术
电子设备中通过近场通信技术(Near Field Communication，NFC)进行数据交换，以实现移动支付、电子票务、门禁、移动身份识别、防伪等功能。
然而，电子设备内空间有限，NFC天线需满足小型化的需求。小型化NFC天线的结构受到电子设备内空间限制，导致小型化NFC天线在空间磁场发生重叠的区域线圈所产生的磁场抵消，降低了电子设备的通信性能，减小了通信距离。
发明内容
本申请提供一种通信性能较佳的天线装置及电子设备。
一方面，本申请实施例提供了一种天线装置，包括介质基板；天线线圈，所述天线线圈设于所述介质基板，所述天线线圈包括卷绕中心部及设于所述卷绕中心部相对两侧的至少一个第一导体段和至少一个第二导体段，所述第一导体段与所述第二导体段串联；及导电件，所述导电件设于所述介质基板，所述导电件与所述天线线圈相对设置，且所述导电件在所述介质基板上的正投影覆盖至少部分所述第一导体段在所述介质基板上的正投影；所述导电件电连接所述第一导体段，所述导电件产生的磁场用于抵消所述第一导体段产生的磁场。
另一方面，本申请实施例还提供了一种电子设备，所述电子设备包括摄像头模组和所述的天线装置，所述天线装置围绕所述摄像头模组设置或者所述天线装置与所述摄像头模组相对设置。
通过在天线装置中设置导电件，导电件能够产生磁场，该磁场可用于抵消第一导体段产生的磁场，当第一导体段产生的至少部分磁场被抵消时，第一导体段在卷绕中心部一侧的磁场减弱，从而，减少第一导体段与第二导体段产生的磁场在两磁场重叠的区域的抵消，增强第二导体段周围的磁场强度，进而以 第二导体段作为主要辐射体，延长通信距离，提高电子设备的通信性能。
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是本申请实施例提供的一种电子设备的结构示意图；
图2是本申请实施例二提供的一种电子设备的结构示意图；
图3是本申请实施例三提供的一种电子设备的结构示意图；
图4是本申请实施例一提供的无线装置的结构示意图；
图5是一实施例中图4所示无线装置沿A-A线的截面的剖视图；
图6是本申请实施例二提供的无线装置的结构示意图；
图7是本申请实施例三提供的无线装置的结构示意图；
图8是另一实施例中图4所示无线装置沿A-A线的截面的剖视图；
图9是本申请实施例四提供的无线装置的结构示意图；
图10是本申请实施例五提供的无线装置的结构示意图；
图11是本申请实施例六提供的无线装置的结构示意图；
图12是本申请实施例七提供的无线装置的结构示意图；
图13是一实施例中图12所示的无线装置沿B-B线的截面的剖视图；
图14是另一实施例中图12所示的无线装置沿B-B线的截面的剖视图；
图15是本申请实施例八提供的无线装置的结构示意图；
图16是本申请实施例提供的无线装置中设有屏蔽件的截面示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。本申请所列举的实施例之间可以适当的相互结合。
如图1所示，本申请实施例提供一种具有近场通信功能的电子设备100。举例而言，电子设备100可以是手机、平板电脑、膝上型计算机、手持计算机、笔记本电脑、上网本，以及媒体播放器、手表、项链、眼镜等具有移动通信功 能的设备。本申请实施例中以手机为例进行说明。
如图1所示，图1为本申请实施例提供的电子设备100的结构示意图。电子设备100中设有天线装置10和摄像头模组20。电子设备100通过天线装置10与外部设备之间传输数据信息，实现通信功能。天线装置10大致为矩形。在其他实施例中，请参照图2和图3，天线装置10还可以是围绕成U形、L形等，以适应不同电子设备100的内部由于摄像头模组20的增加，电子设备100内部堆叠面积不足、形状不规则的情况，使得在电子设备100内部空间受限的情况下，天线装置10仍能具有较佳的性能。在其他实施例中，异形的天线装置10还可以用于避让电子设备100中的其他天线模组或电子器件等。例如：人脸识别模组、环境光传感器、距离传感器、虹膜识别模组等。可以理解的，本申请中天线装置10的形状包括但不限于上述所列举的矩形、U形、L形。
以下实施例以大致为矩形的天线装置10为例进行说明。后续不再赘述。请参照图4和图5，图4为本申请实施例提供的天线装置10的结构示意图。天线装置10包括介质基板105、天线线圈102及导电件103。
本申请实施例定义天线装置10的长度方向为X轴方向。定义天线装置10的宽度方向为Y轴方向。定义天线装置10的厚度方向为Z轴方向。其中，箭头所指方向为正向。图中符号“·”、“×”表示电流的流向。图中C1示意第一导电线122上的电流所产生的磁场方向，C2示意第二导电线124上的电流所产生的磁场方向，C3示意导电件103上的电流所产生的磁场方向，后续不再赘述。
其中，介质基板105用于承载天线线圈102和导电件103。介质基板105的长度、宽度及厚度方向可分别参照天线装置10的X轴、Y轴、Z轴方向。一实施例中，介质基板105可以为聚酰亚胺薄膜(PolyimideFilm，PI)，作为柔性电路板(Flexible Printed Circuit，FPC)的基材。当然，在其他实施例中，介质基板105还可以是聚对苯二甲酸乙二醇酯(Polyethylene Terephthalate，PET)等。本申请实施例中，介质基板105为矩形，天线线圈102围设成矩形。
天线线圈102可以理解为环绕的矩形导线绕组。天线线圈102设于介质基板105。具体的，天线线圈102可以位于介质基板105的表面或介质基板105 的内部。天线线圈102可通过绕线、印刷或蚀刻等工艺中的任意一种成形于介质基板105。
一实施例中，请参照图4和图5，成形于介质基板105上的天线线圈102包括卷绕中心部120及设于卷绕中心部120相对两侧的第一导体段122和第二导体段124。其中，卷绕中心部120是指位于第一导体段122和第二导体段124之间的区域。
本申请在附图4中第一导体段122与第二导体段124以沿Y轴方向相对的导线绕组为例进行说明。当然，在其他实施例中，如图6所示，第一导体段122与第二导体段124还可以是沿X轴方向相对的导线绕组，或者，如图7所示，第一导体段122包括第一子导体段1220和第二子导体段1221，第二导体段124包括第三子导体段1240和第四子导体段1241。其中，第一子导体段1220与第三子导体段1240沿Y轴方向分别设于卷绕中心部相对两侧，第二子导体段1221与第四子导体段1241沿X轴方向分别设于卷绕中心部相对两侧。
具体的，第一导体段122表示位于卷绕中心部120朝向Y轴正向的导电线。第二导体段124表示位于卷绕中心部120朝向Y轴反向的导电线。第一导体段122和第二导体段124的数量可以分别为一根或多根导电线。第一导体段122与第二导体段124包括的导电线的数量可以相同也可以不同。可以理解的，第一导体段122与第二导体段124可以为独立的导电线或者第一导体段122与第二导体段124为同一根导电线上的不同部分。换言之，第一导体段122与第二导体段124可一体成型或连接为一体。
一实施例中，天线线圈102中通入的电流流向如图4所示。图4中I1、I2分别表示第一导体段122、第二导体段124的电流流向。可以理解的，位于卷绕中心部120相对两侧的第一导体段122和第二导体段124相互串联，使得第一导体段122上的电流流向与第二导体段124上的电流流向相反。天线装置10具有小型化的需求，第一导体段122与第二导体段124之间的距离较近。因此，第一导体段122与第二导体段124所产生的磁场在空间中具有重叠的区域。第一导体段122与第二导体段124的电流方向相反，因此产生的磁场方向不同，而相互抵消。其中，第一导体段122所产生的磁场与第二导体段124所产生的磁场方向不同是指第一导体段122与第二导体段124所产生的磁场方 向相反或具有夹角。
导电件103设于介质基板105。具体的，导电件103也可以通过绕线、印刷或蚀刻等工艺中的任意一种成形于介质基板105。其中，导电件103可以设于介质基板105的表面或介质基板的内部。举例而言，天线线圈102与导电件103可以分别设于介质基板105相对的表面。或者，天线线圈102与导电件103设于介质基板105内部，天线线圈102与导电件103相间隔。一实施例中，导电件103相对靠近第一导体段122，远离第二导体段124。导电件103与天线线圈102相对设置。一实施例中，导电件103可以沿介质基板105的厚度方向与天线线圈102相对设置。可以理解的，在其他实施例中，导电件103可以沿介质基板105的长度方向或宽度方向与天线线圈102相对设置。本申请实施例以导电件103与天线线圈102沿介质基板105的厚度方向相对设置为例进行说明。
本申请实施例中，如图4所示，第一导体段122沿X轴方向延伸，第二导体段124沿X轴方向延伸，第一导体段122与第二导体段124沿Y轴方向相对设置，导电件103沿Y轴方向延伸，并与第一导体段122沿Z轴方向相对设置。当然，在其他实施例中，如图6所示，第一导体段122可以沿Y轴方向延伸，第二导体段124可以沿Y轴方向延伸，第一导体段122与第二导体段124沿X轴方向相对设置，导电件103可沿Y轴方向延伸，并与第一导体段122沿Z轴方向相对设置。或者，如图7所示，第一导体段122的第一子导体段1220沿X轴方向延伸，第一导体段122的第二子导体段1221沿Y轴方向延伸，第二导体段124的第三子导体段1240沿X轴方向延伸，第二导体段124的第四子导体段1241沿Y轴方向延伸，第一子导体段1220与第三子导体段1240沿Y轴方向相对设置，第二子导体段1221与第四子导体段1241沿X轴方向相对设置，导电件103可包括第一导电部130与第二导电部131，第一导电部130沿X轴方向延伸，并与第一导体段122的第一子导体段1220沿Z轴方向相对设置，第二导电部131沿Y轴方向延伸，并与第一导体段122的第二子导体段1221相对设置。其中，第一导电部130与第二导电部131可一体成型、连接为一体、或相间隔设置。在图11所示的天线装置10中，第一导电部130用于抵消第一子导体段1220所产生的磁场，以增强第三子导体段 1240周围的磁场强度，延长通信距离，提高电子设备的通信性能。第二导电部131用于抵消第二子导体段1221所产生的磁场，以增强第四子导体段1241周围的磁场强度，延长通信距离，提高电子设备的通信性能。
导电件103与天线线圈102电连接。一实施例中，导电件103与天线线圈102串联。导电件103中具有如图5中I3所示的电流。导电件103上的电流流向与第一导体段122上的电流流向相反，使得导电件103上的电流产生的磁场与第一导体段122的电流产生的磁场至少部分抵消。具体的，请参照图4和图5，第一导体段122上电流流向I1沿X轴反向。导电件103上电流流向I1沿X轴正向。第一导体段122在介质基板105背离天线线圈102的一侧会产生图5中沿C1方向的磁场。导电件103在介质基板105背离天线线圈102的一侧会产生图5中沿C3方向的磁场。第二导体段124在介质基板105背离天线线圈102的一侧会产生图5中沿C2方向的磁场。导电件103与第一导体段122所产生的磁场方向相反，因此能够抵消第一导体段122所产生的磁场，进而减弱第一导体段122所产生的磁场对第二导体段124所产生的磁场的影响。
另一实施例中，导电件103上的电流流向与第一导体段122上的电流流向相同，使得导电件103上的电流产生的磁场与第一导体段122的电流产生的磁场至少部分抵消。具体的，请参照图4和图8，第一导体段122上电流流向I1沿X轴反向。导电件103上电流流向沿X轴反向。第一导体段122在介质基板105会产生图8中沿C1方向的磁场。导电件103在介质基板105会产生图8中沿C3方向的磁场。第二导体段124在介质基板105会产生图8中沿C2方向的磁场。导电件103与第一导体段122所产生的磁场方向相反，因此能够抵消第一导体段122所产生的磁场，进而减弱第一导体段122所产生的磁场对第二导体段124所产生的磁场的影响。
其中，导电件103可以是纳米铜线、纳米银线等具有导电特性的导电线。在其他实施例中，导电件103还可以是导电基板，如，金属、石墨烯、导电高分子等材料制成的基板等。
通过在天线装置10中设置导电件103，导电件103能够产生磁场，该磁场可用于抵消第一导体段122产生的磁场，当第一导体段122产生的至少部分磁场被抵消时，第一导体段122在卷绕中心部120一侧的磁场减弱，从而，减 少第一导体段122与第二导体段124产生的磁场在重叠区域抵消，增强第二导体段124周围的磁场强度，进而以第二导体段124作为主要辐射体，延长通信距离，提高电子设备100的通信性能。
如图9所示，其中，第一导体段122的数量可以为一个或多个。第二导体段124的数量可以为一个或多个。本申请实施例中，第一导体段122为导电线，第二导体段124为导电线一实施例中，天线线圈102包括多个第一导电线122a。天线线圈102还包括多个第二导电线124a。在沿第一导体段122指向第二导体段124的方向上，即Y轴方向上，第一导电线122a的宽度可以小于第二导电线124a的宽度。可以理解的，第一导电线122a和第二导电线124a为直径不同的导电线。其中，第二导电线124a较粗，第一导电线122a较细。
通过将第一导体段122与第二导体段124设置为宽度不同的导电线，使得第一导体段122较细，第一导体段122上产生的磁场强度较弱，从而可以减少第一导体段122对第二导体段124磁场的抵消。第二导体段124较粗，第二导体段124上产生的磁场强度较强，可以作为主要的辐射体。
进一步的，如图10所示，天线装置10还包括磁性基板101。一实施例中，磁性基板101与介质基板105(参照图5)沿天线装置10的厚度方向相对设置。磁性基板101位于介质基板105朝向Z轴反向的一侧。其中，磁性基板101可以为铁氧体磁芯。
具体的，磁性基板101在天线线圈102所在平面的正投影覆盖至少部分第二导体段124。
一实施例中，如图10所示，磁性基板101大致呈矩形。磁性基板101在天线线圈102所在平面的正投影在沿Y轴方向上延伸至第一导体段122和第二导体段124。其中，天线线圈102所在平面为与XY平面相互平行的平面。第一导体段122沿Z轴的投影靠近磁性基板101的一端。第二导体段124沿Z轴的投影靠近磁性基板101相对的另一端。
通过设置磁性基板101，磁性基板101可以用于支撑第一导体段122和第二导体段124。此外，磁性基板101具有较低的磁阻率，能够增强第一导体段122和第二导体段124所产生的磁场。
另一实施例中，如图11所示，磁性基板101包括第一磁性区域110和第 二磁性区域112。第一磁性区域110在天线线圈102所在平面的正投影覆盖部分卷绕中心部120。第二磁性区域112在天线线圈102所在平面的正投影位于第二导体段124背离卷绕中心部120的一侧。第二导体段124沿Z轴的投影位于第一磁性区域110与第二磁性区域112之间。第一导体段122沿Z轴的投影位于磁性基板101外。
通过设置第二磁性区域112，可以使得第二导体段124远离卷绕中心部120一侧的磁场较多的通过磁性基板101，基于磁性基板101磁阻率较低的特点，增强第二导体段124产生的磁场强度。此外，第一导体段122远离磁性基板112，第一导体段122所产生的磁场较少的通过磁性基板101，进而减小第一导体段122所产生的磁场对第二导体段124所产生的磁场的影响。
可选的，如图12所示，第二磁性区域112在天线线圈102所在平面的正投影可以大于或等于第一磁性区域110在天线线圈102所在平面的正投影。其中，第二磁性区域112在天线线圈102所在平面的正投影大于或等于第一磁性区域110在天线线圈102所在平面的正投影表示第二磁性区域112在XY平面的面积大于或等于第一磁性区域110在XY平面的面积。
通过使第二磁性区域112在天线线圈102所在平面的正投影可以大于或等于第一磁性区域110在天线线圈102所在平面的正投影，可以使得第二导体段124远离卷绕中心部120一侧的磁场通过磁性基板101，基于磁性基板101磁阻率较低的特点，增强第二导体段124产生的磁场强度。
可以理解的，以上实施例中，磁性基板101在天线线圈102所在平面的正投影是否覆盖第一导体段122及第二磁性区域112在XY平面的面积与第一磁性区域110在XY平面的面积可以根据实际需求组合或拆分。
以下实施例对于导电件103的结构和位置进行举例说明，可以理解的，本申请导电件103的结构和位置包括但不限于以下的实施例。
可选的，请参照图12和图13，导电件103靠近第一导体段122，且在沿天线线圈102指向磁性基板101的方向上与第一导体段122相对设置。换言之，导电件103在沿Z轴方向上与第一导体段122相对设置。
导电件103与第一导体段122上的电流流向相反，使得在磁性基板101上导电件103所产生的磁场与第一导体段122所产生的磁场方向相反。从而， 在磁性基板101上导电件103所产生的磁场抵消第一导体段122所产生的磁场，进一步减弱磁性基板101对第一导体段122的导磁作用，从而提高第二导体段124的磁场强度。
一实施例中，请参照图12和图13，导电件103位于天线线圈102与磁性基板101之间。换言之，在沿Z轴方向上依次为天线线圈102、导电件103、磁性基板101。第一导体段122上的电流流向沿X轴反向。导电件103上的电流流向沿X轴正向。换言之，第一导体段122上的电流流向与导电件103上的电流流向相反。从而，第一导体段122在磁性基板101上产生的磁场沿Y轴正向。导电件103在磁性基板101上产生的磁场沿Y轴反向。因此，在磁性基板101上，可以使导电件103所产生的磁场能够抵消第一导体段122上的电流所产生的磁场，进而减小第一导体段122上的电流对第二导体段124上的电流产生的磁场的抵消作用。此外，在磁性基板101上，导电件103还可以增强与第二导体段124磁场方向相同的磁场强度。
当然，在其他实施例中，导电件103还可以位于天线线圈102背离磁性基板101的一侧。换言之，在沿Z轴方向上可以依次为导电件103、天线线圈102、磁性基板101。导电件103上的电流流向相反于第一导体段122上的电流流向可以使导电件103与第一导体段122在磁性基板101上产生的磁场方向相反。
可选的，导电件103在天线线圈102所在平面的正投影覆盖第一导体段122。换言之，导电件103在磁性基板112上的投影与第一导体段122在磁性基板101上的投影至少部分重叠。
通过使导电件103在磁性基板112上的投影覆盖第一导体段122在磁性基板112上的投影，能够保证导电件103的磁场对第一导体段122的磁场的抵消作用，提高天线装置10的可靠性。
具体的，请参照图12和图13，天线线圈102与磁性基板112沿XY平面设置。导电件103与第一导体段122沿Z轴相对设置。第一导体段122包括XY平面内多个并排设置的导电线。在沿Y轴方向上，导电件103为相较于第一导体段122宽度较大的导电基板。可以理解的，在XY平面内，导电件103的面积大于或等于第一导体段122的面积。当然，在其他实施例中，导电件103的面积可以小于第一导体段122的面积。其中，当第一导体段122包括一 根导电线时，第一导体段122的面积是指一根导电线在XY平面内的截面面积。当第一导体段122包括多根导电线时，第一导体段122的面积表示多根导电线及多根导电线之间空隙区域在XY平面内的截面面积之和。
通过将导电件103与第一导体段122沿Z轴相对设置，使得导电件103与第一导体段122产生的磁场在磁性基板112上相互抵消，从而，能够在磁性基板101上减小第一导体段122的磁场对第二导体段124的磁场影响。
另一实施例中，请参照图12和图13，导电件103在天线线圈102所在平面的正投影至少部分位于卷绕中心部120。换言之，导电件103朝向Z轴反向延伸。导电件103在XY平面的面积大于或等于第一导体段122在XY平面的面积。
其中，如图13所示，天线线圈102与导电件103设于介质基板105的表面。一实施方式中，导电件103通过粘贴的方式粘结于介质基板105朝向磁性基板101的表面。天线线圈102通过粘贴的方式粘结于介质基板105朝向磁性基板101的表面。该实施方式简单，有利于天线装置10的加工。
在另一实施方式中，导电件103可以成形于介质基板105。导电件103可以成形于介质基板105上的工艺方式包括但不限于涂布、蚀刻、压印技术。该实施方式中可以减少天线装置10在厚度方向上的尺寸。此外，该实施方式中天线线圈102与导电件103可以通过同一工艺流程制成，提高天线装置10的一致性，减少天线装置10的工艺步骤。
如图14所示，当导电件103与天线线圈102设于介质基板105上时，介质基板105可以包括绝缘层152。天线线圈102和导电件103可以分别位于绝缘层152的相对两侧。换言之，介质基板105上沿Z轴反向依次设置有天线线圈102、绝缘层152、导电件103。或者，介质基板105上沿Z轴反向依次设置有导电件103、绝缘层152、天线线圈102。通过在介质基板105中设置绝缘层114，可以避免天线线圈102和导电件103相互干渉。
进一步的，请参照图14和图15，天线装置10还可以包括电连接件106。电连接件106设于介质基板105。电连接件106位于天线线圈102与导电件103之间。电连接件106用于连接天线线圈102和导电件103，从而使得天线线圈102与导电件103串联于同一电路中。其中，电连接件106设于介质基板105 上的方式包括但不限于涂布、蚀刻、压印技术。
具体的，请参照图14和图15，电连接件106包括第一电连接件106a和第二电连接件106b。第一电连接件106a电连接导电件103和天线线圈102的馈电端。第二电连接件106a用于电连接第一导体段122和导电件103。
通过设置电连接件106，将天线线圈102与导电件103串联，可以减少天线装置10中的电路。此外，当天线线圈102与导电件103串联时，可以使得天线线圈102与导电件103上的电流的大小相同，避免导电件103上的电流过大时，造成的浪费，或者导电件103上的电流过小时，对第一导体段122磁场的抵消作用较弱。
可选的，请参照图14和图15，天线线圈102还包括第一馈电部121和第二馈电部123。第一馈电部121和第二馈电部123与第一导体段122及第二导体段124位于同一平面内(即XY平面)。第一馈电部121、导电件103、天线线圈102及第二馈电部123依次串联。具体的，第一馈电部121的一端电连接第一电连接件106a，第一电连接件106a背离第一馈电部121的一端连接导电件103，导电件103背离第一电连接件106a的一端电连接第二电连接件106b，第二电连接件106b背离导电件103的一端电连接第一导体段122，第一导体段122背离第二电连接件106b的一端电连接至第二馈电部123。从而，第一馈电部121、第一电连接件106a、导电件103、第二电连接件106b、天线线圈102、第二馈电部123形成导通回路。
一实施例中，请参照图14和图15，介质基板105上设有第一连接孔(未图示)和第二连接孔(未图示)。第一连接孔和第二连接孔为介质基板105的绝缘层152上的通孔。第一连接孔和第二连接孔用于收容第一电连接件106a和第二电连接件106b。
进一步的，如图16所示，天线装置10还包括屏蔽件104。其中，屏蔽件104是指与空气具有不同磁导率的介质。第一导体段122的磁场经空气至屏蔽件104时，屏蔽件104使得第一导体段122的磁场的大小和方向发生变化，从而形成磁屏蔽。或者，屏蔽件104为金属屏蔽件104，当第一导体段122上的电流变化时，金属屏蔽件104在磁场中切割磁感线，产生感应电流及感应磁场，以抵消第一导体段122上电流产生的磁场的变化。
具体的，屏蔽件104位于导电件103与第一导体段122之间，或者屏蔽件104位于导电件103与磁性基板101之间。
一实施例中，屏蔽件104位于导电件103与磁性基板101之间。屏蔽件104设于介质基板105。屏蔽件104可以通过涂布、蚀刻、压印技术设于介质基板105上，且位于导电件103与第一导体段122之间。即天线装置10在沿Z轴方向上，依次为第一导体段122、导电件103、屏蔽件104及磁性基板101。
另一实施例中，屏蔽件104位于导电件103与第一导体段122之间。即天线装置10在沿Z轴方向上，依次为第一导体段122、屏蔽件104、导电件103及磁性基板101。
当然，在其他实施例中，屏蔽件104还可以与导电件103位于介质基板105的同一层上，屏蔽件104与导电件103之间可以填充有绝缘材料。换言之，在沿Z轴方向上，屏蔽件104与导电件103平齐。
通过设置屏蔽件104屏蔽第一导体段122的磁场，进一步减小第一导体段122在磁性基板101上的磁场强度，减少第一导体段122对第二导体段124上的电流产生的磁场的抵消，从而，增强第二导体段124周围的磁场强度。
以上是本申请的部分实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。

Claims (20)

  1. 一种天线装置，其特征在于，包括：
    介质基板；
    天线线圈，所述天线线圈设于所述介质基板，所述天线线圈包括卷绕中心部及设于所述卷绕中心部相对两侧的至少一个第一导体段和至少一个第二导体段，所述第一导体段与所述第二导体段串联；及
    导电件，所述导电件设于所述介质基板，所述导电件与所述天线线圈相对设置，且所述导电件在所述介质基板上的正投影覆盖至少部分所述第一导体段在所述介质基板上的正投影；所述导电件与所述第一导体段电连接，所述导电件产生的磁场用于抵消所述第一导体段产生的磁场。
  2. 根据权利要求1所述的天线装置，其特征在于，所述第一导体段包括第一子导体段和第二子导体段，所述第二导体段包括第三子导体段和第四子导体段，所述第一子导体段与所述第三子导体段分别沿第一方向设于所述卷绕中心部的相对两侧，所述第二子导体段与所述第四子导体段分别沿第二方向设于所述卷绕中心部的相对两侧，所述第一方向与所述第二方向相交，所述导电件包括相交的第一导电部和第二导电部，所述第一导电部用于抵消所述第一子导体段产生的磁场，所述第二导电部用于抵消所述第二子导体段产生的磁场。
  3. 根据权利要求1所述的天线装置，其特征在于，所述天线装置还包括磁性基板，所述磁性基板与所述介质基板相对设置；所述导电件在所述磁性基板上产生的磁场与所述第一导体段在所述磁性基板上产生的磁场至少部分抵消。
  4. 根据权利要求3所述的天线装置，其特征在于，所述磁性基板所在平面与所述天线线圈所在平面平行，所述导电件位于所述天线线圈朝向所述磁性基板的一侧，或者，所述导电件位于所述天线线圈背离所述磁性基板的一侧。
  5. 根据权利要求3所述的天线装置，其特征在于，所述磁性基板在所述天线线圈所在平面的正投影覆盖至少部分所述第二导体段。
  6. 根据权利要求5所述的天线装置，其特征在于，所述磁性基板包括相 连的第一磁性区域、第二磁性区域及第三磁性区域，所述第三磁性区域位于所述第一磁性区域与所述第二磁性区域之间，所述第三磁性区域在所述天线线圈所在平面的正投影覆盖所述第二导体段；所述第一磁性区域在所述天线线圈所在平面的正投影覆盖至少部分所述卷绕中心部；所述第二磁性区域在所述天线线圈所在平面的正投影位于所述第二导体段背离所述卷绕中心部的一侧。
  7. 根据权利要求6所述的天线装置，其特征在于，所述第一磁性区域在所述天线线圈所在平面的正投影还覆盖至少部分所述第一导体段。
  8. 根据权利要求7所述的天线装置，其特征在于，所述第二磁性区域的面积大于或等于所述第一磁性区域的面积。
  9. 根据权利要求1至8任意一项所述的天线装置，其特征在于，所述第一导体段上的电流流向与所述导电件上的电流流向相反。
  10. 根据权利要求1至8任意一项所述的天线装置，其特征在于，所述导电件在所述天线线圈所在平面的正投影覆盖所述第一导体段。
  11. 根据权利要求10所述的天线装置，其特征在于，所述天线线圈包括多个所述第一导体段，多个所述第一导体段间隔设置，所述导电件在所述天线线圈所在平面的正投影覆盖多个所述第一导体段。
  12. 根据权利要求11所述的天线装置，其特征在于，所述导电件在所述天线线圈所在平面的正投影覆盖至少部分所述卷绕中心部。
  13. 根据权利要求1至8任意一项所述的天线装置，其特征在于，在沿所述第一导体段指向所述第二导体段的方向上，所述第一导体段的宽度小于所述第二导体段的宽度。
  14. 根据权利要求1至8任意一项所述的天线装置，其特征在于，所述天线装置还包括屏蔽件，所述屏蔽件设于所述介质基板，所述屏蔽件用于屏蔽至少部分所述第一导体段产生的磁场。
  15. 根据权利要求14所述的天线装置，其特征在于，所述屏蔽件设于所述导电件与所述第一导体段之间，或者，所述屏蔽件设于所述导电件与所述磁性基板之间。
  16. 根据权利要求1至8任意一项所述的天线装置，其特征在于，所述天线线圈还包括第一馈电部和第二馈电部，所述第一馈电部及所述第二馈电部设 于所述第一导体段背离所述卷绕中心部的一侧，所述第一馈电部、所述导电件、所述第一导体段、所述第二导体段及所述第二馈电部依次串联。
  17. 根据权利要求1至8任意一项所述的天线装置，其特征在于，所述介质基板包括绝缘层，所述绝缘层设于所述介质基板内部，所述天线线圈和所述导电件分别位于所述绝缘层的相对两侧。
  18. 根据权利要求17所述的天线装置，其特征在于，所述天线装置还包括至少两个电连接件，所述介质基板还包括贯穿所述绝缘层的至少两个连接孔，所述电连接件位于所述连接孔内，至少一个所述电连接件用于电连接所述导电件与所述第一馈电部，至少一个所述电连接件用于电连接所述导电件与所述第一导体段。
  19. 一种电子设备，其特征在于，所述电子设备包括摄像头模组和如权利要求1至18任意一项所述的天线装置，所述天线装置围绕所述摄像头模组设置或者所述天线装置与所述摄像头模组相对设置。
  20. 根据权利要求19所述的电子设备，其特征在于，所述天线装置至少围设所述摄像头模组相邻的两个侧面。
PCT/CN2021/076016 2020-04-24 2021-02-08 天线装置及电子设备 WO2021212975A1 (zh)

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