Antenna device and electronic equipment

Abstract

The present application provides an antenna device and an electronic device. The antenna device includes: a dielectric substrate, an antenna coil and a conductive member. The antenna coil is arranged on the dielectric substrate, and the antenna coil includes a winding center portion and at least one first conductor segment and at least one second conductor segment arranged on opposite sides of the winding center portion, and the first conductor segment and the second conductor segment are connected in series. The conductive member is arranged on the dielectric substrate, 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 first conductor segment, and the magnetic field generated by the conductive member is used to offset the magnetic field generated by the first conductor segment. In the antenna device provided in the present application, the second conductor segment as the main radiator has better communication performance.

Description

Technical Field

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

[0002] Near Field Communication (NFC) technology is used in electronic devices to exchange data to achieve functions such as mobile payment, electronic ticketing, access control, mobile identity recognition, and anti-counterfeiting.

[0003] However, the space inside electronic devices is limited, and NFC antennas need to meet the requirements of miniaturization. The structure of miniaturized NFC antennas is limited by the space inside electronic devices, resulting in the magnetic field generated by the coils of miniaturized NFC antennas in the area where the magnetic field overlaps in space, which reduces the communication performance of electronic devices and shortens the communication distance. Summary of the invention

[0004] The present application provides an antenna device and an electronic device with better communication performance.

[0005] On the one hand, an embodiment of the present application provides an antenna device, including a dielectric substrate; an antenna coil, the antenna coil is arranged on the dielectric substrate, the antenna coil includes a winding center portion and at least one first conductor segment and at least one second conductor segment arranged on opposite sides of the winding center portion, the first conductor segment and the second conductor segment are connected in series; and a conductive member, the conductive member is arranged on the dielectric substrate, 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 first conductor segment, and the magnetic field generated by the conductive member is used to offset the magnetic field generated by the first conductor segment.

[0006] On the other hand, an embodiment of the present application further provides an electronic device, which includes a camera module and the antenna device, wherein the antenna device is arranged around the camera module or the antenna device is arranged opposite to the camera module.

[0007] By arranging a conductive member in the antenna device, the conductive member can generate a magnetic field, and the magnetic field can be used to offset the magnetic field generated by the first conductor segment. When at least part of the magnetic field generated by the first conductor segment is offset, the magnetic field of the first conductor segment on one side of the winding center portion is weakened, thereby reducing the offset of the magnetic fields generated by the first conductor segment and the second conductor segment in the area where the two magnetic fields overlap, enhancing the magnetic field strength around the second conductor segment, and then using the second conductor segment as the main radiator, extending the communication distance and improving the communication performance of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0009] Figure 1 is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0010] Figure 2 It is a structural schematic diagram of an electronic device provided in Embodiment 2 of the present application;

[0011] Figure 3 It is a structural schematic diagram of an electronic device provided in Embodiment 3 of the present application;

[0012] Figure 4 is a schematic diagram of the structure of a wireless device provided in Embodiment 1 of the present application;

[0013] Figure 5 In one embodiment Figure 4 A cross-sectional view of the wireless device along line AA;

[0014] Figure 6 In another embodiment Figure 4 A cross-sectional view of the wireless device along line AA;

[0015] Figure 7 is a schematic diagram of the structure of a wireless device provided in Embodiment 2 of the present application;

[0016] Figure 8 is a schematic diagram of the structure of a wireless device provided in Embodiment 3 of the present application;

[0017] Fig. 9 is a schematic diagram of the structure of a wireless device provided in Embodiment 4 of the present application;

[0018] Fig.10 is a schematic diagram of the structure of a wireless device provided in Embodiment 5 of the present application;

[0019] Fig.11 In one embodiment Fig.10 A cross-sectional view of the wireless device shown along line BB;

[0020] Fig.12 In another embodiment Fig.10 A cross-sectional view of the wireless device shown along line BB;

[0021] Fig.13 It is a schematic diagram of the structure of the wireless device provided in Example 6 of the present application.

[0022] Fig.14 It is a cross-sectional schematic diagram of a wireless device provided in an embodiment of the present application having a shielding member. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0024] like Figure 1 As shown, the embodiment of the present application provides an electronic device 100 with a near field communication function. For example, the electronic device 100 can be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a notebook computer, a netbook, a media player, a watch, a necklace, glasses, and other devices with mobile communication functions. In the embodiment of the present application, a mobile phone is used as an example for description.

[0025] like Figure 1 As shown, Figure 1 The electronic device 100 is a schematic diagram of the structure of the electronic device 100 provided in the embodiment of the present 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 the external device to realize the communication function. The antenna device 10 is roughly rectangular. In other embodiments, please refer to Figures 1 to 3 The antenna device 10 can also be wrapped into a U shape, an L shape, etc., to adapt to the situation that the stacking area inside the electronic device 100 is insufficient and the shape is irregular due to the addition of the camera module 20 inside the electronic device 100, so that the antenna device 10 can still have better performance when the internal space of the electronic device 100 is limited. In other embodiments, the special-shaped antenna device 10 can also be used to avoid other antenna modules or electronic devices in the electronic device 100. For example: face recognition module, ambient light sensor, distance sensor, iris recognition module, etc.

[0026] The following embodiments are described by taking the substantially rectangular antenna device 10 as an example. Figure 4 and Figure 5 , Figure 4 The schematic diagram of the structure of the antenna device 10 provided in the embodiment of the present application is as follows. The antenna device 10 includes a dielectric substrate 105 , an antenna coil 102 and a conductive member 103 .

[0027] The embodiment of the present application defines the length direction of the antenna device 10 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 represent the direction of current flow. In the figure, C1, C2, and C3 represent the direction of the magnetic field generated by the current on the first conductive wire 122 and the current on the second conductive wire 124 on the dielectric substrate 105. No further details will be given later.

[0028] The dielectric substrate 105 is used to carry the antenna coil 102 and the conductive member 103. The length, width and thickness of the dielectric substrate 105 can refer to the X-axis, Y-axis and Z-axis directions of the antenna device, respectively. In one embodiment, the dielectric substrate 105 can be a polyimide film (PI) as a substrate of a flexible printed circuit (FPC). Of course, in other embodiments, the dielectric substrate 105 can also be polyethylene terephthalate (PET) and the like.

[0029] The antenna coil 102 refers to a winding of a wire. The antenna coil 102 is disposed on a 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 may be formed on the dielectric substrate 105 by any one of processes such as winding, printing or etching.

[0030] In one embodiment, please refer to Figure 4 and Figure 5 The antenna coil 102 formed on the dielectric substrate 105 includes a winding center portion 120 and a first conductor segment 122 and a second conductor segment 124 disposed on opposite sides of the winding center portion 120. The winding center portion 120 refers to a region between the first conductor segment 122 and the second conductor segment 124.

[0031] Specifically, the first conductor segment 122 represents a conductive wire located at the winding center portion 120 and facing the positive direction of the Y axis. The second conductor segment 124 represents a conductive wire located at the winding center portion 120 and facing the negative direction of the Y axis. The number of the first conductor segment 122 and the second conductor segment 124 can be one or more conductive wires respectively. The number of conductive wires included in the first conductor segment 122 and the second conductor segment 124 can be the same or different. It can be understood that the first conductor segment 122 and the second conductor segment 124 can be independent conductive wires or the first conductor segment 122 and the second conductor segment 124 can be different parts of the same conductive wire.

[0032] In one embodiment, the current flowing through the antenna coil 102 flows as follows: Figure 4 shown. Figure 4Where I1 and I2 represent the current flow direction of the first conductor segment 122 and the second conductor segment 124, respectively. It can be understood that the first conductor segment 122 and the second conductor segment 124 located on opposite sides of the winding center portion 120 are connected in series, so that the current flow direction on the first conductor segment 122 is opposite to the current flow direction on the second conductor segment 124. 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 close. Therefore, the first conductor segment 122 and the second conductor segment 124 have overlapping areas in the magnetic field phase space. The magnetic field generated by the first conductor segment 122 is different in direction from the magnetic field generated by the second conductor segment 124, and they cancel each other out. Among them, the magnetic field generated by the first conductor segment 122 is different in direction from the magnetic field generated by the second conductor segment 124, which means that the magnetic fields generated by the first conductor segment 122 and the second conductor segment 124 are opposite in direction or have an angle.

[0033] The conductive member 103 is disposed on the dielectric substrate 105. Specifically, the conductive member 103 can also be formed on the dielectric substrate 105 by any one of processes such as winding, printing or etching. Among them, the conductive member 103 can be disposed on the surface of the dielectric substrate 105 or inside the dielectric substrate. For example, the antenna coil 102 and the conductive member 103 can be disposed on opposite surfaces of the dielectric substrate 105 respectively. 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 away from the second conductor segment 124. The conductive member 103 is disposed opposite to the antenna coil 102. In one embodiment, the conductive member 103 can be disposed 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 can be disposed opposite to the antenna coil 102 along the length direction or the width direction of the dielectric substrate 105. The embodiment of the present application is described by taking the conductive member 103 and the antenna coil 102 as being arranged relative to each other along the thickness direction of the dielectric substrate 105 as an example.

[0034] The conductive element 103 is electrically connected to the antenna coil 102. In one embodiment, the conductive element 103 is connected in series with the antenna coil 102. Figure 4 The current on the conductive member 103 flows in the opposite direction to the current on the first conductor segment 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 segment 122 at least partially cancel each other out. Figure 4 and Figure 5 , the current on the first conductor segment 122 flows in the opposite direction of I1 along the X axis. The current on the conductive element 103 flows in the positive direction of I1 along the X axis. The first conductor segment 122 will generate Figure 5 The conductive element 103 will generate a magnetic field in the YZ plane. Figure 5The second conductor segment 124 will generate a magnetic field in the YZ plane. Figure 5 The magnetic field generated by the conductive element 103 and the first conductor segment 122 is in opposite directions, so the magnetic field generated by the first conductor segment 122 can be offset, thereby reducing the influence of the magnetic field generated by the first conductor segment 122 on the magnetic field generated by the second conductor segment 124.

[0035] In another embodiment, the current flow direction of the conductive member 103 is the same as the current flow direction of the first conductor segment 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 segment 122 at least partially cancel each other out. Figure 4 and Figure 6 , the current on the first conductor segment 122 flows in the opposite direction of I1 along the X-axis. The current on the conductive member 103 flows in the opposite direction of the X-axis. The first conductor segment 122 will generate Figure 6 The conductive element 103 will generate a magnetic field along the direction of C1 on the dielectric substrate 105. Figure 6 The second conductor segment 124 will generate a magnetic field along the direction C3 on the dielectric substrate 105. Figure 6 The magnetic field generated by the conductive element 103 and the first conductor segment 122 is in opposite directions, so the magnetic field generated by the first conductor segment 122 can be offset, thereby reducing the influence of the magnetic field generated by the first conductor segment 122 on the magnetic field generated by the second conductor segment 124.

[0036] The conductive element 103 may be a conductive wire with conductive properties such as nano copper wire, nano silver wire, etc. In other embodiments, the conductive element 103 may also be a conductive substrate, such as a substrate made of metal, graphene, conductive polymer, etc.

[0037] By setting a conductive member 103 in the antenna device 10, the conductive member 103 can generate a magnetic field, which can be used to offset the magnetic field generated by the first conductor segment 122. When at least part of the magnetic field generated by the first conductor segment 122 is offset, the magnetic field of the first conductor segment 122 on the side of the winding center portion 120 is weakened, thereby reducing the offset of the magnetic fields generated by the first conductor segment 122 and the second conductor segment 124 in the overlapping area, enhancing the magnetic field strength around the second conductor segment 124, and then using the second conductor segment 124 as the main radiator, extending the communication distance, and improving the communication performance of the electronic device 100.

[0038] like Figure 7As shown, the first conductor segment 122 and the second conductor segment 124 may respectively include a plurality of conductive wires in the shape of a circular tube, a square, a rectangle, etc. In one embodiment, the first conductor segment 122 includes a plurality of first conductive wires 122a. The second conductor segment 124 includes a plurality of second conductive wires 124a. In the direction from the first conductor segment 122 to the second conductor segment 124, that is, in the Y-axis direction, the width of the first conductive wire 122a may be less than the width of the second conductive wire 124a. It can be understood that 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.

[0039] By setting the first conductor segment 122 and the second conductor segment 124 as conductive wires with different widths, the first conductor segment 122 is thinner, and the magnetic field intensity generated on the first conductor segment 122 is weaker, so that the first conductor segment 122 can reduce the cancellation of the magnetic field of the second conductor segment 124. The second conductor segment 124 is thicker, and the magnetic field intensity generated on the second conductor segment 124 is stronger, and can serve as the main radiator.

[0040] Further, such as Figure 8 As shown, the antenna device 10 further includes a magnetic substrate 101. In one embodiment, the magnetic substrate 101 and the dielectric substrate 105 (see Figure 5 ) are arranged opposite to each other along the thickness direction of the antenna device 10. The magnetic substrate 101 is located on the side of the dielectric substrate 105 opposite to the Z axis. The magnetic substrate 101 can be a ferrite core.

[0041] Specifically, the orthographic projection of the magnetic substrate 101 on the plane where the antenna coil 102 is located covers at least a portion of the second conductor segment 124 .

[0042] In one embodiment, if Figure 8 As shown, the magnetic substrate 101 is roughly 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 along 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 other end of the magnetic substrate 101.

[0043] By providing the magnetic substrate 101 , the magnetic substrate 101 can be used to support the first conductor segment 122 and the second conductor segment 124 . In addition, the magnetic substrate 101 has a low magnetic resistivity, and can enhance the magnetic field generated by the first conductor segment 122 and the second conductor segment 124 .

[0044] In another embodiment, if Fig. 9As shown, 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 part of the winding center portion 120. The orthographic projection of the second magnetic region 112 on the plane where the antenna coil 102 is located is located on the side of the second conductor segment 124 away from the winding center portion 120. The projection of the second conductor segment 124 along the Z axis is located between the first magnetic region 110 and the second magnetic region 112. The projection of the first conductor segment 122 along the Z axis is located outside the magnetic substrate 101.

[0045] By providing the second magnetic region 112, the magnetic field of the second conductor segment 124 away from the winding center portion 120 can pass more through the magnetic substrate 101, and based on the low magnetic reluctance of the magnetic substrate 101, the magnetic field strength generated by the second conductor segment 124 is enhanced. In addition, the first conductor segment 122 is away from the magnetic substrate 112, and the magnetic field generated by the first conductor segment 122 passes less through the magnetic substrate 101, thereby reducing the influence of the magnetic field generated by the first conductor segment 122 on the magnetic field generated by the second conductor segment 124.

[0046] Optional, such as Fig.10 As shown, 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 orthographic projection of the second magnetic region 112 on the plane where the antenna coil 102 is located is greater than or equal to the orthographic projection of the first magnetic region 110 on the plane where the antenna coil 102 is located, which means that the area of ​​the second magnetic region 112 on the XY plane is greater than or equal to the area of ​​the first magnetic region 110 on the XY plane.

[0047] By making the orthographic projection of the second magnetic region 112 on the plane where the antenna coil 102 is located 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 magnetic field of the second conductor segment 124 away from the winding center portion 120 can pass through the magnetic substrate 101. Based on the low magnetic resistivity of the magnetic substrate 101, the magnetic field strength generated by the second conductor segment 124 is enhanced.

[0048] It can be understood that in the above embodiments, whether the orthographic projection of the magnetic substrate 101 on the plane where the antenna coil 102 is located covers the area of ​​the first conductor segment 122 and the second magnetic region 112 in the XY plane and the area of ​​the first magnetic region 110 in the XY plane can be combined or separated according to actual needs.

[0049] The following embodiments illustrate the structure and position of the conductive element 103 . It can be understood that the structure and position of the conductive element 103 in the present application include but are not limited to the following embodiments.

[0050] Optional, see Fig.10 and Fig.11 The conductive member 103 is close to the first conductor segment 122 and is disposed opposite to the first conductor segment 122 in a direction from the antenna coil 102 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.

[0051] The currents on the conductive member 103 and the first conductor segment 122 flow in opposite directions, so that the magnetic field generated by the conductive member 103 on the magnetic substrate 101 is in opposite directions to the magnetic field generated by the first conductor segment 122. Thus, the magnetic field generated by the conductive member 103 on the magnetic substrate 101 offsets the magnetic field generated by the first conductor segment 122, further weakening the magnetic conductivity of the magnetic substrate 101 on the first conductor segment 122, thereby increasing the magnetic field strength of the second conductor segment 124.

[0052] In one embodiment, please refer to Fig.10 and Fig.11 , the conductive member 103 is located between the antenna coil 102 and the magnetic substrate 101. In other words, along the Z-axis direction, the antenna coil 102, the conductive member 103, and the magnetic substrate 101 are arranged in sequence. The current flow direction on the first conductor segment 122 is in the opposite direction of the X-axis. The current flow direction on the conductive member 103 is in the positive direction of the X-axis. In other words, the current flow direction on the first conductor segment 122 is opposite to the current flow direction on the conductive member 103. Therefore, 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 in the opposite direction of the Y-axis. Therefore, on the magnetic substrate 101, the magnetic field generated by the conductive member 103 can offset the magnetic field generated by the current on the first conductor segment 122, thereby reducing the offsetting effect of the current on the first conductor segment 122 on the magnetic field generated by the current on the second conductor segment 124. In addition, on the magnetic substrate 101, the conductive member 103 can also enhance the magnetic field strength in the same direction as the magnetic field of the second conductor segment 124.

[0053] Of course, in other embodiments, the conductive member 103 may also be located on the side of the antenna coil 102 facing away from the magnetic substrate 101. In other words, along the Z-axis direction, the conductive member 103, the antenna coil 102, and the magnetic substrate 101 may be arranged in sequence. The current flow direction on the conductive member 103 is opposite to the current flow direction on the first conductor segment 122, so that the magnetic field generated by the conductive member 103 and the first conductor segment 122 on the magnetic substrate 101 is opposite in direction.

[0054] Optionally, the orthographic projection of the conductive member 103 on the plane where the antenna coil 102 is located covers the first conductor segment 122. In other words, the projection of the conductive member 103 on the magnetic substrate 112 at least partially overlaps with the projection of the first conductor segment 122 on the magnetic substrate 101.

[0055] By making the projection of the conductive member 103 on the magnetic substrate 112 cover the projection of the first conductor segment 122 on the magnetic substrate 112 , the magnetic field of the conductive member 103 can be offset against the magnetic field of the first conductor segment 122 , thereby improving the reliability of the antenna device 10 .

[0056] For details, please refer to Fig.10 and Fig.11 , 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 arranged opposite to each other along the Z axis. The first conductor segment 122 is a plurality of conductive wires arranged side by side in the XY plane. Along the Y axis, the conductive member 103 is a conductive substrate having 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. Of course, in other embodiments, the area of ​​the conductive member 103 may be smaller than the area of ​​the first conductor segment 122. Among them, when the first conductor segment 122 includes one conductive wire, the area of ​​the first conductor segment 122 refers to the cross-sectional area of ​​one conductive wire in the XY plane. When the first conductor segment 122 includes multiple conductive wires, the area of ​​the first conductor segment 122 represents the sum of the cross-sectional areas of the multiple conductive wires and the gap areas between the multiple conductive wires in the XY plane.

[0057] By arranging the conductive member 103 and the first conductor segment 122 relative to each other along the Z axis, the magnetic fields generated by the conductive member 103 and the first conductor segment 122 cancel each other out on the magnetic substrate 112 , thereby reducing the influence of the magnetic field of the first conductor segment 122 on the magnetic field of the second conductor segment 124 on the magnetic substrate 101 .

[0058] In another embodiment, please refer to Fig.10 and Fig.11 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 portion 120. In other words, the conductive member 103 extends in the opposite direction of the Z axis. The area of ​​the conductive member 103 in the XY plane is greater than or equal to the area of ​​the first conductor segment 122 in the XY plane.

[0059] Among them, Fig.11 As shown, the antenna coil 102 and the conductive member 103 are disposed on the surface of the dielectric substrate 105. In one embodiment, the conductive member 103 is bonded to the surface of the dielectric substrate 105 facing the magnetic substrate 101 by gluing. The antenna coil 102 is bonded to the surface of the dielectric substrate 105 facing the magnetic substrate 101 by gluing. This embodiment is simple and is conducive to the processing of the antenna device 10.

[0060] In another embodiment, the conductive member 103 may be formed on the dielectric substrate 105. The conductive member 103 may be formed on the dielectric substrate 105 by a process including, but not limited to, coating, etching, and stamping techniques. In this embodiment, the size of the antenna device 10 in the thickness direction may be reduced. In addition, in this embodiment, the antenna coil 102 and the conductive member 103 may be manufactured by the same process flow, thereby improving the consistency of the antenna device 10 and reducing the process steps of the antenna device 10.

[0061] like Fig.12 As shown, when the conductive member 103 and the antenna coil 102 are arranged on the dielectric substrate 105, the dielectric substrate 105 may include an insulating layer 152. The antenna coil 102 and the conductive member 103 may be located on opposite sides of the insulating layer 152, respectively. In other words, the antenna coil 102, the insulating layer 152, and the conductive member 103 are sequentially arranged on the dielectric substrate 105 in the reverse direction of the Z axis. Alternatively, the conductive member 103, the insulating layer 152, and the antenna coil 102 are sequentially arranged on the dielectric substrate 105 in the reverse direction of the Z axis. By arranging the insulating layer 114 in the dielectric substrate 105, it is possible to prevent the antenna coil 102 and the conductive member 103 from interfering with each other.

[0062] For further information, please refer to Fig.12 and Fig.13 The antenna device 10 may further include an electrical connector 106. The electrical connector 106 is disposed on the dielectric substrate 105. The electrical connector 106 is located between the antenna coil 102 and the conductive member 103. The electrical connector 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 electrical connector 106 may be disposed on the dielectric substrate 105 by, but is not limited to, coating, etching, or stamping techniques.

[0063] For details, please refer to Fig.12 and Fig.13 The electrical connector 106 includes a first electrical connector 106a and a second electrical connector 106b. The first electrical connector 106a electrically connects the conductive member 103 and the feeding end of the antenna coil 102. The second electrical connector 106a is used to electrically connect the first conductor segment 122 and the conductive member 103.

[0064] By providing the electrical connector 106 and connecting the antenna coil 102 and the conductive member 103 in series, the circuits in the antenna device 10 can be reduced. In addition, when the antenna coil 102 and the conductive member 103 are connected in series, the magnitude of the current on the antenna coil 102 and the conductive member 103 can be made the same, thereby avoiding waste caused by excessive current on the conductive member 103, or when the current on the conductive member 103 is too small, the offset effect on the magnetic field of the first conductor segment 122 is weak.

[0065] Optional, see Fig.12 and Fig.13 , the antenna coil 102 further includes a first feeder 121 and a second feeder 123. The first feeder 121 and the second feeder 123 are located in the same plane as the first conductor segment 122 and the second conductor segment 124. The first feeder 121, the conductive member 103, the antenna coil 102 and the second feeder 123 are connected in series in sequence. Specifically, one end of the first feeder 121 is electrically connected to the first electrical connector 106a, one end of the first electrical connector 106a facing away from the first feeder 121 is connected to the conductive member 103, one end of the conductive member 103 facing away from the first electrical connector 106a is electrically connected to the second electrical connector 106b, one end of the second electrical connector 106b facing away from the conductive member 103 is electrically connected to the first conductor segment 122, and one end of the first conductor segment 122 facing away from the second electrical connector 106b is electrically connected to the second feeder 123. Thus, the first feeder 121 , the first electrical connector 106 a , the conductive member 103 , the second electrical connector 106 b , the antenna coil 102 , and the second feeder 123 form a conductive loop.

[0066] In one embodiment, please refer to Fig.12 and Fig.13 The dielectric substrate 105 is provided with a first connection hole (not shown) and a second connection hole (not shown). The first connection hole and the second connection hole are through holes on the insulating layer 152 of the dielectric substrate 105. The first connection hole and the second connection hole are used to receive the first electrical connector 106a and the second electrical connector 106b.

[0067] Further, such as Fig.14 As shown, the antenna device 10 also includes a shielding member 104. The shielding member 104 refers to a medium having a different magnetic permeability from the air. When the magnetic field of the first conductor segment 122 passes through the air to the shielding member 104, the shielding member 104 changes the magnitude and direction of the magnetic field of the first conductor segment 122, thereby forming a magnetic shield. Alternatively, the shielding member 104 is a metal shielding member 104. When the current on the first conductor segment 122 changes, the metal shielding member 104 cuts the magnetic flux lines in the magnetic field, generates an induced current and an induced magnetic field, so as to offset the change in the magnetic field generated by the current on the first conductor segment 122.

[0068] Specifically, 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 .

[0069] In one embodiment, the shielding member 104 is located between the conductive member 103 and the magnetic substrate 101. The shielding member 104 is provided on the dielectric substrate 105. The shielding member 104 can be provided on the dielectric substrate 105 by coating, etching, or stamping technology, and is located between the conductive member 103 and the first conductor segment 122. That is, the antenna device 10 includes the first conductor segment 122, the conductive member 103, the shielding member 104, and the magnetic substrate 101 in sequence along the Z-axis direction.

[0070] In another embodiment, 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 element 104, the conductive element 103 and the magnetic substrate 101 in sequence along the Z-axis direction.

[0071] Of course, in other embodiments, the shielding member 104 and the conductive member 103 may be located on the same layer of the dielectric substrate 105, and insulating material may be filled between the shielding member 104 and the conductive member 103. In other words, the shielding member 104 is flush with the conductive member 103 along the Z-axis direction.

[0072] By providing the shielding member 104 to shield the magnetic field of the first conductor segment 122 , the magnetic field strength of the first conductor segment 122 on the magnetic substrate 101 is further reduced, and the offset of the magnetic field generated by the first conductor segment 122 on the current on the second conductor segment 124 is reduced, thereby enhancing the magnetic field strength around the second conductor segment 124 .

[0073] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An antenna device, characterized in that: include: dielectric substrate; An antenna coil, the antenna coil is arranged on the dielectric substrate, the antenna coil comprises a winding center portion and at least one first conductor segment and at least one second conductor segment arranged on opposite sides of the winding center portion, the first conductor segment and the second conductor segment are connected in series, and the antenna coil further comprises a first feeding portion and a second feeding portion; a conductive member, the conductive member being disposed on the dielectric substrate, the conductive member being disposed opposite to the antenna coil, and the orthographic projection of the conductive member on the dielectric substrate covering at least a portion of the orthographic projection of the first conductor segment on the dielectric substrate, the conductive member and the antenna coil being manufactured on the dielectric substrate through the same process flow; the conductive member being electrically connected to the first conductor segment, and the first feeder, the conductive member, the first conductor segment, the second conductor segment and the second feeder being sequentially connected in series, and the magnetic field generated by the conductive member being used to offset the magnetic field generated by the first conductor segment; and A magnetic substrate comprises a first magnetic region and a second magnetic region, wherein the orthographic projection of the first magnetic region on the plane where the antenna coil is located covers at least a portion of the winding center portion, the orthographic projection of the second magnetic region on the plane where the antenna coil is located is located on the side of the second conductor segment away from the winding center portion, the area of ​​the second magnetic region is greater than or equal to the area of ​​the first magnetic region, the orthographic projection of the second conductor segment on the surface where the magnetic substrate is located is located between the first magnetic region and the second magnetic region, and the orthographic projection of the first conductor segment on the surface where the magnetic substrate is located is located outside the magnetic substrate.

2. The antenna device according to claim 1, characterized in that The magnetic substrate is arranged opposite to the dielectric substrate, and the direction of the magnetic field generated by the conductive element on the magnetic substrate is opposite to the direction of the magnetic field generated by the first conductor segment on the magnetic substrate.

3. The antenna device according to claim 2, characterized in that The first feeder and the second feeder are disposed on a side of the first conductor segment away from the winding center portion.

4. The antenna device according to claim 3, characterized in that: The dielectric substrate comprises an insulating layer, the insulating layer is arranged inside the dielectric substrate, and the antenna coil and the conductive member are respectively located at two opposite sides of the insulating layer.

5. The antenna device according to claim 4, characterized in that: The antenna device also includes at least two electrical connectors, and the dielectric substrate also includes at least two conductive vias penetrating the insulating layer. The electrical connectors are located in the conductive vias, at least one of the electrical connectors is used to electrically connect the conductive member to the first feeding part, and at least one of the electrical connectors is used to electrically connect the conductive member to the first conductor segment.

6. The antenna device according to claim 3, characterized in that: The current on the first conductor segment flows in a direction opposite to that on the conductive member, so that on the magnetic substrate, the magnetic field generated by the current on the conductive member and the magnetic field generated by the current on the first conductor segment at least partially cancel each other out.

7. The antenna device according to claim 2, characterized in that: The plane where the magnetic substrate is located is parallel to the plane where the antenna coil is located, and the conductive component is located on a side of the antenna coil facing the magnetic substrate.

8. The antenna device according to claim 1 or 2, characterized in that: The orthographic projection of the conductive member on the plane where the antenna coil is located covers the first conductor segment.

9. The antenna device according to claim 8, characterized in that: The antenna coil includes a plurality of first conductor segments, and the conductive member has an orthographic projection on a plane where the antenna coil is located that covers the plurality of first conductor segments.

10. The antenna device according to claim 1 or 2, characterized in that: The orthographic projection of the conductive member on the plane where the antenna coil is located covers at least a portion of the winding center portion.

11. The antenna device according to claim 1 or 2, characterized in that: In a direction along the first conductor segment toward the second conductor segment, a width of the first conductor segment is smaller than a width of the second conductor segment.

12. The antenna device according to claim 1 or 2, characterized in that: The antenna device further comprises a shielding component, which is disposed on the dielectric substrate and is used to shield at least a portion of the magnetic field generated by the first conductor segment.

13. An electronic device, characterized in that: The electronic device comprises a camera module and the antenna device as described in any one of claims 1 to 12, wherein the antenna device is arranged around the camera module or the antenna device is arranged opposite to the camera module.

14. The electronic device according to claim 13, characterized in that: The antenna device at least surrounds two adjacent side surfaces of the camera module.

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