CN211605406U - Antenna device and electronic apparatus - Google Patents

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

Antenna devices and electronic equipment

technical field

The present application relates to the field of electronic technologies, and in particular, to an antenna device and electronic equipment.

Background technique

In electronic devices, data exchange is performed through Near Field Communication (NFC) technology to realize functions such as mobile payment, electronic ticketing, access control, mobile identity recognition, and anti-counterfeiting.

However, the space in the electronic device is limited, and the NFC antenna needs to meet the requirement of miniaturization. The structure of the miniaturized NFC antenna is limited by the space in the electronic device, which causes the magnetic field generated by the miniaturized NFC antenna to cancel in the area where the spatial magnetic field overlaps, which reduces the communication performance of the electronic device and reduces the communication distance.

Utility model content

The present application provides an antenna device and electronic equipment with better communication performance.

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 provided on the dielectric substrate, the antenna coil includes a winding center portion and is provided on the winding center portion at least one first conductor segment and at least one second conductor segment on opposite sides, the first conductor segment and the second conductor segment are connected in series; 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 the first conductor segment, and the magnetic field generated by the conductive member is used to cancel the magnetic field generated by the first conductor segment.

On the other hand, 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 is connected to the antenna device. The relative settings of the camera module.

By arranging a conductive member in the antenna device, the conductive member can generate a magnetic field, which can be used to cancel the magnetic field generated by the first conductor segment. When at least part of the magnetic field generated by the first conductor segment is cancelled, the first conductor segment is in the center of the winding. Therefore, the magnetic field generated by the first conductor segment and the second conductor segment is reduced in the area where the two magnetic fields overlap, and the magnetic field strength around the second conductor segment is enhanced, and the second conductor segment is used as the main radiation. It can extend the communication distance and improve the communication performance of electronic equipment.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the accompanying drawings required in the embodiments will be briefly introduced below.

1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

2 is a schematic structural diagram of an electronic device provided in Embodiment 2 of the present application;

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 according to 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 one embodiment;

FIG. 6 is a cross-sectional view of the wireless device shown in FIG. 4 along the line A-A in another embodiment;

FIG. 7 is a schematic structural diagram of a wireless device according to Embodiment 2 of the present application;

FIG. 8 is a schematic structural diagram of a wireless device provided in Embodiment 3 of the present application;

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 according to Embodiment 5 of the present application;

FIG. 11 is a cross-sectional view of the wireless device shown in FIG. 10 along the line B-B in one embodiment;

FIG. 12 is a cross-sectional view of the wireless device shown in FIG. 10 in another embodiment along the line B-B;

FIG. 13 is a schematic structural diagram of a wireless device according to Embodiment 6 of the present application.

FIG. 14 is a schematic cross-sectional view of a shielding member provided in a wireless device provided in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

As shown in FIG. 1 , an embodiment of the present application provides an electronic device 100 with a near field communication function. For example, 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 a mobile communication function, such as a media player, a watch, a necklace, and glasses. In the embodiments of the present application, a mobile phone is used as an example for description.

As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of an electronic device 100 according to an 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 realizes the communication function by transmitting data information between the antenna device 10 and the external device. The antenna device 10 is substantially rectangular. In other embodiments, please refer to FIG. 1 to FIG. 3 , the antenna device 10 may also be surrounded by a U-shape, an L-shape, etc., so as to adapt to the internal stacking of the electronic device 100 due to the increase of the camera module 20 in different electronic devices 100 . In the case of insufficient area and irregular shape, 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 may 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.

The following embodiments are described by taking a substantially rectangular antenna device 10 as an example. No further description will be given later. Please refer to FIG. 4 and FIG. 5 . FIG. 4 is a schematic structural diagram of an antenna device 10 according to an embodiment of the present application. The antenna device 10 includes a dielectric substrate 105 , an antenna coil 102 and a conductive member 103 .

This 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. Among them, the direction pointed by the arrow is positive. Symbols "·" and "x" in the figure represent the flow of current. In the figure, C1 , C2 and C3 represent the magnetic field directions generated on the dielectric substrate 105 by the current on the first conductive wire 122 and the current on the second conductive wire 124 . No further description will be given later.

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 may refer to the X-axis, Y-axis, and Z-axis directions of the antenna device, respectively. In one embodiment, the dielectric substrate 105 may be a polyimide film (Polyimide Film, PI), which is used as a base material of a flexible printed circuit (Flexible Printed Circuit, FPC). Of course, in other embodiments, the dielectric substrate 105 may also be polyethylene terephthalate (Polyethylene Terephthalate, PET) or the like.

Antenna coil 102 refers to a surrounding 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 one of processes such as winding, printing or etching.

In one embodiment, please refer to FIG. 4 and FIG. 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 disposed on opposite sides of the winding center portion 120 . segment 124. The winding center portion 120 refers to a region located between the first conductor segment 122 and the second conductor segment 124 .

Specifically, the first conductor segment 122 represents a conductive wire located at the winding center portion 120 toward the positive direction of the Y-axis. The second conductor segment 124 represents the conductive wire located at the winding center portion 120 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 can be understood that the first conductor segment 122 and the second conductor segment 124 may be independent conductive lines, or the first conductor segment 122 and the second conductor segment 124 may be different parts of the same conductive line.

In one embodiment, the current flowing in the antenna coil 102 flows as shown in FIG. 4 . In FIG. 4 , I1 and I2 represent the current flow directions 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 with each other, so that the current flow on the first conductor segment 122 is opposite to the current flow direction on the second conductor segment 124 . The antenna device 10 needs to be miniaturized, and the distance between the first conductor segment 122 and the second conductor segment 124 is relatively short. Therefore, the first conductor segment 122 and the second conductor segment 124 have overlapping regions in the magnetic field phase space. The magnetic field generated by the first conductor segment 122 and the magnetic field generated by the second conductor segment 124 have different directions and cancel each other. The different directions of the magnetic field generated by the first conductor segment 122 and the magnetic field generated by the second conductor segment 124 means that the magnetic fields generated by the first conductor segment 122 and the second conductor segment 124 have opposite directions or have an included angle.

The conductive member 103 is disposed 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. The conductive member 103 may 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 may be respectively disposed 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 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 may 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 may be disposed opposite to the antenna coil 102 along the length direction or the width direction of the dielectric substrate 105 . The embodiments of the present application are described by taking an example in which the conductive member 103 and the antenna coil 102 are disposed opposite to each other along the thickness direction of the dielectric substrate 105 .

The conductive member 103 is electrically connected to the antenna coil 102 . In one embodiment, the conductive member 103 is connected in series with the antenna coil 102 . The conductive member 103 has a current as shown by I3 in FIG. 4 . The current flow on the conductive member 103 is opposite to the current flow 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. Specifically, please refer to FIG. 4 and FIG. 5 , the current flow direction I1 on the first conductor segment 122 is reversed along the X-axis. The current on the conductive member 103 flows in the positive direction of the X-axis along the direction I1. The first conductor segment 122 generates a magnetic field along the C1 direction in FIG. 5 in the YZ plane. The conductive member 103 generates a magnetic field along the C3 direction in FIG. 5 in the YZ plane. The second conductor segment 124 generates a magnetic field along the C2 direction in FIG. 5 in the YZ plane. The direction of the magnetic field generated by the conductive member 103 and the first conductor segment 122 is opposite, so the magnetic field generated by the first conductor segment 122 can be canceled, thereby weakening the magnetic field generated by the first conductor segment 122 to the second conductor segment 124. Impact.

In another embodiment, the current on the conductive member 103 flows in the same direction as the current on the first conductor segment 122 , so that the magnetic field generated by the current on the conductive member 103 at least partially cancels the magnetic field generated by the current on the first conductor segment 122 . Specifically, referring to FIG. 4 and FIG. 6 , the current flow direction I1 on the first conductor segment 122 is reversed along the X-axis. The 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. 6 on the dielectric substrate 105 . The conductive member 103 generates a magnetic field along the C3 direction in FIG. 6 on the dielectric substrate 105 . The second conductor segment 124 generates a magnetic field along the C2 direction in FIG. 6 on the dielectric substrate 105 . The direction of the magnetic field generated by the conductive member 103 and the first conductor segment 122 is opposite, so the magnetic field generated by the first conductor segment 122 can be canceled, thereby weakening the magnetic field generated by the first conductor segment 122 to the second conductor segment 124. Impact.

Wherein, the conductive member 103 may be a conductive wire with conductive properties, such as nano-copper wire, nano-silver wire, or the like. In other embodiments, the conductive member 103 may also be a conductive substrate, such as a substrate made of materials such as metal, graphene, and conductive polymers.

By arranging the conductive member 103 in the antenna device 10, the conductive member 103 can generate a magnetic field, which can be used to cancel 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 cancelled, the first conductor The magnetic field of the segment 122 on the side of the winding center portion 120 is weakened, so that the magnetic field generated by the first conductor segment 122 and the second conductor segment 124 is reduced to cancel in the overlapping area, and the magnetic field strength around the second conductor segment 124 is enhanced. The second conductor segment 124 acts as a main radiator to extend the communication distance and improve the communication performance of the electronic device 100 .

As shown in FIG. 7 , the first conductor segment 122 and the second conductor segment 124 may respectively include a plurality of conductive lines in the shape of a round tube, a square, a rectangle, or the like. In one embodiment, the first conductor segment 122 includes a plurality of first conductive lines 122a. The second conductor segment 124 includes a plurality of second conductive lines 124a. In a direction along the first conductor segment 122 toward the second conductor segment 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. It can be understood that the first conductive wire 122a and the second conductive wire 124a are conductive wires with different diameters. The second conductive line 124a is thicker, and the first conductive line 122a is thinner.

By setting the first conductor segment 122 and the second conductor segment 124 as conductive lines with different widths, the first conductor segment 122 is made thinner, and the magnetic field intensity generated on the first conductor segment 122 is weaker, so that the number of the first conductor segment can be reduced. 122 cancels the magnetic field of the second conductor segment 124. The second conductor segment 124 is relatively thick, and the magnetic field intensity generated on the second conductor segment 124 is stronger, and can be used as a main radiator.

Further, as shown in FIG. 8 , the antenna device 10 further includes a magnetic substrate 101 . In one embodiment, the magnetic substrate 101 and the dielectric substrate 105 (refer to FIG. 5 ) are disposed 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 toward the Z-axis. The magnetic substrate 101 may be a ferrite core.

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

In one embodiment, as shown in FIG. 8 , 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 along the Y-axis direction to the first conductor segment 122 and the second conductor segment 124 . 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 .

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 magnetoresistance, which can enhance the magnetic field generated by the first conductor segment 122 and the second conductor segment 124 .

In another embodiment, as shown in FIG. 9 , the magnetic substrate 101 includes a first magnetic region 110 and a second magnetic region 112 . The first magnetic region 110 is wound around the center portion 120 on the orthographic projection covering portion of 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 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 .

By arranging the second magnetic region 112 , the magnetic field on the side of the second conductor segment 124 away from the winding center portion 120 can pass through the magnetic substrate 101 more. 124 generated magnetic field strength. In addition, since the first conductor segment 122 is far away from the magnetic substrate 112 , the magnetic field generated by the first conductor segment 122 is less likely to pass through the magnetic substrate 101 , thereby reducing the effect of the magnetic field generated by the first conductor segment 122 on the second conductor segment 124 . influence of magnetic fields.

Optionally, as shown in FIG. 10 , the orthographic projection of the second magnetic region 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 region 110 on the plane where the antenna coil 102 is located. Wherein, 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, indicating that the area of the second magnetic region 112 on the XY plane is greater than or equal to the first magnetic region 112 The area of region 110 in the XY plane.

By making the orthographic projection of the second magnetic region 112 on the plane where the antenna coil 102 is located 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 made away from the winding center 120 side The magnetic field passing through the magnetic substrate 101 enhances the magnetic field strength generated by the second conductor segment 124 based on the low magnetoresistance of the magnetic substrate 101 .

It can be understood that, in the above embodiment, 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 on the XY plane and the area of the first magnetic region 110 on the XY plane. It can be combined or split according to actual needs.

The following embodiments illustrate the structure and position of the conductive member 103. It is understood that the structure and position of the conductive member 103 in the present application include but are not limited to the following embodiments.

Optionally, please refer to FIG. 10 and FIG. 11 , the conductive member 103 is close to the first conductor segment 122 and is opposite to the first conductor segment 122 along the direction of the antenna coil 102 toward the magnetic substrate 101 . In other words, the conductive member 103 is disposed opposite to the first conductor segment 122 along the Z-axis direction.

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 opposite to the magnetic field generated by the first conductor 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 , further weakening 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.

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, the antenna coil 102 , the conductive member 103 , and the magnetic substrate 101 are in this order along the Z-axis direction. The current flow on the first conductor segment 122 is reversed along the X-axis. The current on the conductive member 103 flows in the positive direction of the X-axis. In other words, the current flow on the first conductor segment 122 is opposite to the current flow on the conductive member 103 . Therefore, the magnetic field generated by the first conductor segment 122 on the magnetic substrate 101 is along 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 member 103 can cancel the magnetic field generated by the current on the first conductor segment 122 , thereby reducing the effect of the current on the first conductor segment 122 on the second conductor segment 124 . The canceling effect of the magnetic field produced by the current. 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 .

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

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 the projection of the first conductor segment 122 on the magnetic substrate 101 .

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 guaranteed to cancel the magnetic field of the first conductor segment 122 , thereby improving the performance of the antenna device 10 . reliability.

Specifically, please refer to FIG. 10 and FIG. 11 , the antenna coil 102 and the magnetic substrate 112 are disposed 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 is a plurality of conductive lines arranged side by side in the XY plane. In the direction along the Y-axis, the conductive member 103 is a conductive substrate with a larger width than that of 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 . Wherein, when the first conductor segment 122 includes a conductive wire, the area of the first conductor segment 122 refers to the cross-sectional area of the conductive wire in the XY plane. When the first conductor segment 122 includes a plurality of conductive lines, the area of the first conductor segment 122 represents the sum of the cross-sectional areas of the plurality of conductive lines and the void area between the plurality of conductive lines in the XY plane.

By arranging the conductive member 103 and the first conductor segment 122 opposite 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 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 .

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 reversely extends 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.

Wherein, as shown in FIG. 11 , the antenna coil 102 and the conductive member 103 are provided on the surface of the dielectric substrate 105 . In one embodiment, the conductive member 103 is adhered to the surface of the dielectric substrate 105 facing the magnetic substrate 101 by sticking. The antenna coil 102 is adhered to the surface of the dielectric substrate 105 facing the magnetic substrate 101 by sticking. This embodiment is simple and facilitates the processing of the antenna device 10 .

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 imprinting techniques. In this embodiment, the size of the antenna device 10 in the thickness direction can be reduced. In addition, in this embodiment, the antenna coil 102 and the conductive member 103 can be manufactured through the same process flow, which improves the consistency of the antenna device 10 and reduces the process steps of the antenna device 10 .

As shown in FIG. 12 , when the conductive member 103 and the antenna coil 102 are disposed 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 disposed on the dielectric substrate 105 in the reverse direction along the Z-axis. Alternatively, the conductive member 103 , the insulating layer 152 , and the antenna coil 102 are disposed on the dielectric substrate 105 in reverse order along the Z-axis. By providing the insulating layer 114 in the dielectric substrate 105, the antenna coil 102 and the conductive member 103 can be prevented from interfering with each other.

Further, please refer to FIG. 12 and FIG. 13 , 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 connector 106 is disposed on the dielectric substrate 105 includes, but is not limited to, coating, etching, and imprinting techniques.

Specifically, 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 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 for electrically connecting the first conductor segment 122 and the conductive member 103 .

By providing the electrical connection member 106 and connecting the antenna coil 102 and the conductive member 103 in series, the circuit 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, so as to avoid waste caused when the current on the conductive member 103 is too large, or the current on the conductive member 103 When the current is too small, the cancellation effect on the magnetic field of the first conductor segment 122 is weak.

Optionally, please refer to FIG. 12 and FIG. 13 , the antenna coil 102 further includes a first power feeding part 121 and a second power feeding part 123 . The first power feeder 121 and the second power feeder 123 are located in the same plane as the first conductor segment 122 and the second conductor segment 124 . The first power feeder 121 , the conductive member 103 , the antenna coil 102 and the second power feeder 123 are connected in series in sequence. Specifically, one end of the first power feeder 121 is electrically connected to the first electrical connector 106a, and one end of the first electrical connector 106a that faces away from the first power feeder 121 is connected to the conductive member 103, and the conductive member 103 faces away from the first electrical connector 106a One end of the second electrical connector 106b is electrically connected to the second electrical connector 106b, the end of the second electrical connector 106b facing away from the conductive component 103 is electrically connected to the first conductor segment 122, and the end of the first conductor segment 122 facing away from the second electrical connector 106b is electrically connected to the second electrical connector 106b. power feeder 123 . Therefore, the first power feeding part 121 , the first electrical connecting member 106 a , the conductive member 103 , the second electrical connecting member 106 b , the antenna coil 102 , and the second power feeding part 123 form a conducting loop.

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 for receiving the first electrical connector 106a and the second electrical connector 106b.

Further, as shown in FIG. 14 , the antenna device 10 further includes a shielding member 104 . The shielding member 104 refers to a medium having a different magnetic permeability than air. When the magnetic field of the first conductor segment 122 passes through the air to the shield 104, the shield 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 field lines in the magnetic field to generate an induced current and an induced magnetic field to cancel the current on the first conductor segment 122. Changes in the magnetic field produced by the current.

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 .

In one embodiment, the shielding member 104 is located between the conductive member 103 and the magnetic substrate 101 . The shielding member 104 is disposed on the dielectric substrate 105 . The shielding member 104 can be disposed on the dielectric substrate 105 through coating, etching, and imprinting techniques, 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.

In another embodiment, the shielding member 104 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 shielding member 104 , the conductive member 103 and the magnetic substrate 101 in sequence along the Z-axis direction.

Of course, in other embodiments, the shielding member 104 and the conductive member 103 may also 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 in the direction along the Z-axis.

By disposing 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 effect of the first conductor segment 122 on the magnetic field generated by the current on the second conductor segment 124 is reduced. This cancels out, thereby enhancing the magnetic field strength around the second conductor segment 124 .

The above are some embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also regarded as the present invention. The scope of protection applied for.

Claims (17)

1. An antenna device, characterized in that, comprising: dielectric substrate; an antenna coil, the antenna coil is provided 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, the first conductor segment is in series with the second conductor segment; 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 first conductor segment in the Orthographic projection 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 cancel the magnetic field generated by the first conductor segment. 2 . The antenna device according to claim 1 , wherein the antenna device further comprises a magnetic substrate, the magnetic substrate is disposed opposite to the medium substrate, and an orthographic projection of the magnetic substrate on a plane where the antenna coil is located. 3 . Covering at least part of the second conductor segment, the direction of the magnetic field generated by the conductive member 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 , wherein the magnetic substrate comprises a first magnetic region, a second magnetic region and a third magnetic region which are connected to each other, and the third magnetic region is located in the first magnetic region. 4 . Between the area and the second magnetic area, the orthographic projection of the third magnetic area on the plane where the antenna coil is located covers the second conductor segment; the first magnetic area is located on the positive side of the plane where the antenna coil is located. The projection covers at least part 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. 4 . The antenna device according to claim 3 , wherein the orthographic projection of the first magnetic region on the plane where the antenna coil is located also covers at least part of the first conductor segment. 5 . 5 . The antenna device according to claim 4 , wherein the area of the second magnetic region is greater than or equal to that of the first magnetic region. 6 . 6. The antenna device according to any one of claims 2 to 5, wherein the antenna coil further comprises a first power feeder and a second power feeder, the first power feeder and the first power feeder Two feeding parts are provided on the side of the first conductor segment away from the winding center part, the first feeding part, the conductive member, the first conductor segment, the second conductor segment and the The second power feeding parts are connected in series in sequence. 7 . The antenna device according to claim 6 , wherein the dielectric substrate comprises an insulating layer, the insulating layer is provided inside the dielectric substrate, and the antenna coil and the conductive member are respectively located on the insulating layer. 8 . opposite sides of the layer. 8 . The antenna device according to claim 7 , wherein the antenna device further comprises at least two electrical connectors, the dielectric substrate further comprises at least two conductive vias penetrating the insulating layer, the The electrical connector is located in the conductive via, at least one of the electrical connectors is used to electrically connect the conductive component and the first feeding portion, and at least one of the electrical connectors is used to electrically connect the conductive component to the first power feeder. the first conductor segment. 9 . The antenna device according to claim 6 , wherein the current flow on the first conductor segment is opposite to the current flow on the conductive member, so that on the magnetic substrate, the conductive The magnetic field produced by the current on the piece at least partially cancels the magnetic field produced by the current on the first conductor segment. 10 . The antenna device according to claim 2 , wherein the plane where the magnetic substrate is located is parallel to the plane where the antenna coil is located, and the conductive member is located on the antenna coil facing the magnetic substrate. 11 . side. 11 . The antenna device according to claim 1 , wherein the orthographic projection of the conductive member on the plane where the antenna coil is located covers the first conductor segment. 12 . 12 . The antenna device according to claim 11 , wherein the antenna coil comprises a plurality of the first conductor segments, and the orthographic projection of the conductive member on the plane where the antenna coil is located covers the plurality of the first conductor segments. 13 . a conductor segment. 13 . The antenna device according to claim 1 , wherein the orthographic projection of the conductive member on the plane where the antenna coil is located covers at least part of the winding center portion. 14 . 14. The antenna device according to any one of claims 1 to 5, wherein in a direction along the first conductor segment pointing to the second conductor segment, the width of the first conductor segment is smaller than that of the first conductor segment. the width of the second conductor segment. 15 . The antenna device according to claim 1 , wherein the antenna device further comprises a shielding member, the shielding member is provided on the dielectric substrate, and the shielding member is used to shield at least part of the shielding member. 16 . the magnetic field generated by the first conductor segment. 16. An electronic device, characterized in that the electronic device comprises a camera module and the antenna device according to any one of claims 1 to 15, wherein the antenna device is arranged around the camera module or the antenna The device is arranged opposite to the camera module. 17 . The electronic device according to claim 16 , wherein the antenna device surrounds at least two adjacent side surfaces of the camera module. 18 .

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