Antenna Apparatus and Electronic Device

An antenna apparatus and an electronic device are provided. The antenna apparatus includes a dielectric substrate, a conductive element, and an antenna coil disposed on a first surface of the dielectric substrate. The antenna coil includes a winding center part, at least one first conductor segment and at least one second conductor segment respectively disposed on two opposite sides of the winding center part, the first conductor segment and the second conductor segment are in series connection. The conductive element is disposed on a second surface of the dielectric substrate opposite to the first surface or disposed in an interior of the dielectric substrate, disposed opposite to the first conductor segment, and the conductive element is electrically connected to the first conductor segment. Orthographic projection of the conductive element on the dielectric substrate covers at least one part of orthographic projection of the first conductor segment on the dielectric substrate.

TECHNICAL FIELD

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

BACKGROUND

An electronic device exchanges data through a near field communication (NFC) technology to achieve functions such as mobile payment, electronic ticketing, access control, mobile identity recognition, anti-counterfeiting, etc.

However, space in the electronic device is limited, and an NFC antenna needs to meet the requirements of miniaturization. A structure of a miniaturized NFC antenna is limited by the space in the electronic device, resulting in cancellation of the magnetic field generated by coil in the area where spatial magnetic field of the miniaturized NFC antenna overlaps, which reduces communication performance of the electronic device and reduces communication distance.

SUMMARY

In a first aspect, an antenna apparatus is provided, and includes a dielectric substrate, a conductive element and an antenna coil disposed on a first surface of the dielectric substrate; the antenna coil includes a winding center part, at least one first conductor segment and at least one second conductor segment, the first conductor segment and the second conductor segment are respectively disposed on two opposite sides of the winding center par, the first conductor segment and the second conductor segment are in series connection; the conductive element is disposed on a second surface of the dielectric substrate opposite to the first surface or disposed in an interior of the dielectric substrate, disposed opposite to the first conductor segment, and the conductive element is electrically connected to the first conductor segment; orthographic projection of the conductive element on the dielectric substrate covers at least one part of orthographic projection of the first conductor segment on the dielectric substrate; a magnetic field generated by the conductive element is configured to cancel out a magnetic field generated by the first conductor segment.

In a second aspect, an electronic device is provided, and includes a camera module and the antenna apparatus mentioned above, the antenna apparatus is disposed around the camera module; or the antenna apparatus is disposed opposite to the camera module.

DETAILED DESCRIPTION

In the following, technical solutions in embodiments of the present disclosure will be described clearly and completely in combination with the drawings in the embodiments of the present disclosure. Obviously, the embodiments are only part of embodiments of the present disclosure, not all of them. The embodiments listed in the present disclosure can be properly combined with each other.

As shown inFIG.1, an electronic device100with a near field communication function is provided according to an embodiment of the present disclosure. For example, the electronic device100may be a device with mobile communication function such as a mobile phone, a tablet, laptops, a handheld computer, a laptop, a netbook, a media player, a watch, a necklace, a glass, or the like. Embodiments of the present disclosure take a mobile phone as examples.

As shown inFIG.1,FIG.1is structural schematic view of the electronic device100according to an embodiment of the present disclosure. An antenna apparatus10and a camera module20. The electronic device100and external devices may transmit data information with each other through the antenna apparatus10to achieve communication function. Shape of the antenna apparatus10may be substantially rectangular. In some embodiments, as shown inFIGS.2and3, the shape of the antenna apparatus10may be U-shaped or L-shaped to adapt to adding the camera module20, lacking stacking area, and irregular shape in the electronic device100, such that the electronic device100can have good performance in a situation of lacking internal space. In some embodiments, the special-shaped antenna apparatus10may be configured to avoid other antenna modules and electronic components in the electronic device100, such as a face recognition module, an ambient light sensor, a distance sensor, and an iris recognition module. It can be understood that the shape of the antenna apparatus10may include but not limit to the U shape, L shape and the rectangular.

Following embodiments take the rectangle antenna apparatus10as an example, which is not repeated.

As shown inFIGS.4and5,FIG.4is a structural schematic view of the antenna apparatus10according to an embodiment of the present disclosure. The antenna apparatus10may include a dielectric substrate105, an antenna coil102, and a conductive element103.

In embodiments of the present disclosure, length direction of the antenna apparatus10may be determined as X axis direction, width direction the antenna apparatus10may be determined as Y axis direction, thickness direction of the antenna apparatus10may be determined as Z axis direction, arrows may indicate forward direction “•” and “X” may indicate current direction, C1 may indicate direction of magnetic field generated by current in first conductor segment122, C2 may indicate direction of magnetic field generated by current in second conductor segment124, C3 may indicate direction of magnetic field generated by current in conductive element103, which is not repeated.

The dielectric substrate105may be used to support the antenna coil102and the conductive element103. Length direction, width direction, and thickness direction of the conductive element103may respectively be the X axis direction, Y axis direction, and the Z axis direction of the antenna apparatus10. In some embodiments, the dielectric substrate105may be made of polyimide film (PI) which may be base material of flexible printed circuit (FPC). In other embodiments, the dielectric substrate105may be made of polyethylene terephthalate (PET). In the embodiments of the present disclosure, the shape of the dielectric substrate105and the antenna coil102may be rectangular.

The antenna coil102may be understood as a rectangle wire winding. The antenna coil102may be disposed on the dielectric substrate105. Specifically, the antenna coil102may be disposed on a first surface of the dielectric substrate or in an interior of the dielectric substrate105. The antenna coil102may be disposed on the dielectric substrate105through any one process of winding, printing, and etching.

In some embodiments, as shown inFIGS.4and5, the antenna coil102disposed on/in the dielectric substrate105includes a winding center part120, a first conductor segment122, and a second conductor segment124, the first conductor segment122and the second conductor segment124is disposed on two opposite side of the winding center part120. The winding center part120is a region between the first conductor segment122and the second conductor segment124.

As shown inFIG.4, the first conductor segment122and the second conductor segment124may be two wire windings are disposed opposite to each other along the Y axis. In other embodiments, as shown inFIG.6, the first conductor segment122and the second conductor segment124may be two wire windings are disposed opposite to each other along the X axis. In some embodiments, as shown inFIG.7, the first conductor segment122may include a first conductor sub-segment1220and a second conductor sub-segment1221, and the second conductor segment124may include a third conductor sub-segment1240and a fourth conductor sub-segment1241. The first conductor sub-segment1220and the third conductor sub-segment1240may be respectively disposed on two opposite sides of the winding center part120along the Y axis, and the second conductor sub-segment1221and the fourth conductor sub-segment1241may be respectively disposed on two opposite sides of the winding center part120along the X axis.

Specially, the first conductor segment122may be a wire disposed on a side of the winding center part120toward to forward direction of the Y axis. The second conductor segment124may be a wire disposed on a side of the winding center part120toward to backward direction of the Y axis. The first conductor segment122and the second conductor segment124may be one or more wires. The number of the first conductor segment122and the second conductor segment124may be same or different. It should be understood that the first conductor segment122and the second conductor segment124may be whole wire respectively or different parts of a whole wire. In other words, the first conductor segment122and the second conductor segment124may be one-piece structure or connected to each other.

In some embodiments, direction of current in the antenna coil102is shown inFIG.4. I1 may be indicate direction of current in the first conductor segment122, and12may be indicate direction of current in the second conductor segment124. It should be understood that the first conductor segment122and the second conductor segment124that is disposed on two opposite side of the winding center part120are in series connection, such that the direction of current in the first conductor segment122is opposite to the direction of current in the second conductor segment124. Distance between the first conductor segment122and the second conductor segment124may be close to meet miniaturization requirement of the antenna apparatus. Therefore, the magnetic field generated by the first conductor segment122and the magnetic field generated by the second conductor segment124may have overlapping region. Since the direction of current in the first conductor segment122is opposite to the direction of current in the second conductor segment124, direction of the magnetic field generated by the first conductor segment122is different from direction of the magnetic field generated by the second conductor segment124, and the magnetic field generated by the first conductor segment122may be cancel out the magnetic field generated by the second conductor segment124. It should be noted that direction of the magnetic field generated by the first conductor segment122being different from direction of the magnetic field generated by the second conductor segment124indicate that the direction of the magnetic field generated by the first conductor segment122may be opposite to the direction of the magnetic field generated by the second conductor segment124. In some embodiments, there is an included angle between the direction of the magnetic field generated by the first conductor segment122and the direction of the magnetic field generated by the second conductor segment124.

The conductive element103is disposed on the dielectric substrate105. Specifically, the conductive element103may be disposed on the dielectric substrate105through any one process of winding, printing, and etching. The conductive element103may be disposed on a second surface of the dielectric substrate105opposite to the first surface or disposed in the interior of the dielectric substrate105, For example, the antenna coil102and the conductive element103may be disposed on two opposite surfaces respectively. In some embodiments, the antenna coil102and the conductive element103may be disposed on the interior of the dielectric substrate105, and the antenna coil102and the conductive element103may be spaced apart. In some embodiments, the conductive element103may be disposed close to the first conductor segment122and far away from the second conductor segment124. The conductive element103and the antenna coil102may be oppositely disposed. In some embodiments, the conductive element103may be disposed opposite to the antenna coil102and along direction of thickness of the dielectric substrate105. It should be understood that, in other embodiments, the conductive element103may be disposed opposite to the antenna coil102and along direction of length or width of the dielectric substrate105. The embodiments of the present disclosure take the conductive element103being disposed opposite to the antenna coil102and along direction of thickness of the dielectric substrate105as examples.

In some embodiments, as shown inFIG.4, the first conductor segment122and the second conductor segment124may extend along the direction of the X axis, and the first conductor segment122and the second conductor segment124may be oppositely disposed along the direction of the Y axis. The conductive element103may extend along the direction of the X axis, and the conductive element103and the first conductor segment122may be oppositely disposed along the direction of the Z axis. In other embodiments, as shown inFIG.6, the first conductor segment122and the second conductor segment124may extend to the direction of the Y axis, and the first conductor segment122and the second conductor segment124may be oppositely disposed along the direction of the X axis. The conductive element103may extend along the direction of the Y axis, and the conductive element103and the first conductor segment122may be oppositely disposed along the direction of the Z axis. In some embodiments, as shown inFIG.7, the first conductor sub-segment1220of the first conductor segment122may extend along the direction of the X axis, and the second conductor sub-segment1221of the first conductor segment122may extend along the direction of the X axis. The third conductor sub-segment1240of the second conductor segment124may extend along the direction of the X axis, and the fourth conductor sub-segment1241of the second conductor segment124may extend along the direction of the Y axis. The first conductor sub-segment1220and the third conductor sub-segment1240may be oppositely disposed along the direction of the Y axis, and the second conductor sub-segment1221and the fourth conductor sub-segment1241may be oppositely disposed along the direction of the X axis. The conductive element103may include a first conductive part130and a second conductive part131. The first conductive part130may extend along the X axis, and first conductive part130and the first conductor sub-segment1220of the first conductor segment122may be oppositely disposed along the direction of the Z axis. The second conductive part131may extend along the Y axis, and the second conductive part131and the second conductor sub-segment1221of the first conductor segment122may be oppositely disposed along the forward of the Z axis. The first conductive part130and the second conductive part131may be one-piece structure, connected to each other, or spaced apart. In the antenna apparatus10inFIG.7, the first conductive part130is configured to cancel out the magnetic field generated by the first conductor sub-segment1220to enhance magnetic field strength around the third conductor sub-segment1240, increase communication distance, and improve communication performance of the electronic device100. the second conductive part131is configured to cancel out the magnetic field generated by the second conductor sub-segment1221to enhance magnetic field strength around the fourth conductor sub-segment1241, increase communication distance, and improve communication performance of the electronic device100.

The conductive element103may be electronically connected to the antenna coil102. In some embodiments, the conductive element103and the antenna coil102may be in series connection. As shown inFIG.5,13may indicate direction of current in the conductive element103. The direction of the current in the conductive element103is opposite to the direction of the current in the first conductor segment122, such that magnetic field generated by the current in the conductive element103may partly cancel out the magnetic field generated by the current in the first conductor segment122. Specifically, as shown inFIGS.4and5, the direction of the current in the first conductor segment122may be the same as the backward of the X axis, and the direction of the current in the conductive element103may be the same as the forward of the X axis. The first conductor segment122may generate the magnetic field along direction C1 on a side of the dielectric substrate105away from the antenna coil102. The conductive element103may generate the magnetic field along direction C3 on a side of the dielectric substrate105away from the antenna coil102. The direction of the magnetic field generated by the conductive element103may be opposite to the direction of the magnetic field generated by the first conductor segment122, such that the magnetic field generated by the conductive element103can cancel out the magnetic field generated by the first conductor segment122, and the magnetic field, generated by the conductive element103, in a side of the conductive element103away from the dielectric substrate105can cancel out the magnetic field, generated by the first conductor segment122, in the side of the conductive element103away from the dielectric substrate105, thereby reducing influence of the magnetic field generated by the first conductor segment122on the magnetic field generated by the second conductor segment124.

In some embodiments, the conductive element103may be wire with conductivity such as a nano copper wire or a nano silver wire. In other embodiments, the conductive element103may be a conductive substrate, and the conductive substrate may be made of metal, graphene, conductive polymer and other materials.

The conductive element103disposed in the antenna apparatus10may generate the magnetic field configured to cancel out the magnetic field generated by the first conductor segment122. In response to the magnetic field generated by the first conductor segment122being partly cancelled out, the magnetic field generated by the first conductor segment122on a side of the winding center part120weakens. Therefore, the magnetic field generated by the first conductor segment122may cancel out less magnetic field generated by the second conductor segment124in the overlapping region, and the magnetic field strength around the second conductor segment124may be enhanced, such that the second conductor segment124may be a main radiator to increase communication distance and improve communication performance of the electronic device100.

As shown inFIG.8, the number of the first conductor segment122and the second conductor segment124may be one or more. In the embodiments of the present disclosure, the number of the first conductor segment122and the second conductor segment124may be wire. In some embodiments, the antenna coil102may include a plurality of first wires122aand second wire124a. Along direction of the first conductor segment122toward to the second conductor segment124, i.e., along the direction of Y axis, a width of the first wires122amay be less than the second wire124a. It may be understood that the first wires122aand the second wire124amay be wires with different diameter, and the second wire124ais thicker than and the first wire122a.

The first conductor segment122and the second conductor segment124may be wire with different width, such that first conductor segment122is finer, and the magnetic field generated by the first conductor segment122has smaller magnetic field strength. Therefore, the magnetic field generated by the first conductor segment122may cancel out less magnetic field generated by the second conductor segment124. The second conductor segment124may be thicker, and the magnetic field generated by the second conductor segment124has larger magnetic field strength, such that the second conductor segment124may be the main radiator.

Further, as shown inFIG.9, the antenna apparatus10may include magnetic substrate101. In some embodiments, the magnetic substrate101and the dielectric substrate105(as shown inFIG.5) may oppositely disposed along the thickness of the antenna apparatus10. The magnetic substrate101may be disposed on a side of the dielectric substrate105toward to the backward of the Z axis. The magnetic substrate101may be ferrite core.

Specifically, orthographic projection of the magnetic substrate101on a plane where the antenna coil102is located may cover at least part of the second conductor segment124.

In some embodiments, as shown inFIG.9, shape of the magnetic substrate may be substantially rectangular. The orthographic projection of the magnetic substrate101on the plane where the antenna coil102is located may extend to the first conductor segment122and the second conductor segment124in the Y axis. The plane where the antenna coil102is located may be parallel to a plane where the X axis and the Y axis are located. Orthographic projection of the first conductor segment122on the Z axis may close to an end of the magnetic substrate101, and orthographic projection of the second conductor segment124on the Z axis may close to another end of the magnetic substrate101.

The magnetic substrate101may be configured to support the first conductor segment122and the second conductor segment124. In addition, the magnetic substrate101has lower magnetoresistivity, thereby enhancing the magnetic field generated by the first conductor segment122and the second conductor segment124.

In other embodiments, as shown inFIG.10, the magnetic substrate101may include a first magnetic region110and a second magnetic region112. Orthographic projection of the first magnetic region110on the plane where the antenna coil102is located may cover a part of the winding center part120. Orthographic projection of the second magnetic region112on the plane where the antenna coil102is located may be located on the side of the second conductor segment124away from the winding center part120. Orthographic projection of the second conductor segment124along the Z axis may be located between the first magnetic region110and the second magnetic region112. Orthographic projection of the first conductor segment122along the Z axis may be located out of the magnetic substrate101.

The second magnetic region112may enable more magnetic field on a side of the second conductor segment124away from the winding center part120to pass through the magnetic substrate101. Since the magnetic substrate101has lower magnetoresistivity, the magnetic field strength of the magnetic field generated by the second conductor segment124can be enhance. In addition, the first conductor segment122may be away from the magnetic substrate101, such that less magnetic field generated by the first conductor segment122pass through the magnetic substrate101, thereby reducing influence of the magnetic field generated by the first conductor segment122on the magnetic field generated by the second conductor segment124.

In some embodiments, as shown inFIG.11, the orthographic projection of the second magnetic region112on the plane where the antenna coil102is located may be larger than or equal to the orthographic projection of the first magnetic region110on the plane where the antenna coil102is located. That is, area of the second magnetic region112on plane of the X axis and the Y axis may larger than or equal to area of the first magnetic region110on plane of the X axis and the Y axis.

Since the orthographic projection of the second magnetic region112on the plane where the antenna coil102is located may be larger than or equal to the orthographic projection of the first magnetic region110on the plane where the antenna coil102is located, the magnetic field on the side of the second conductor segment124away from the winding center part120can pass through the magnetic substrate101. Since the magnetic substrate101has lower magnetoresistivity, the magnetic field strength of the magnetic field generated by the second conductor segment124can be enhanced.

It should be understood that, whether the orthographic projection of the magnetic substrate101on the plane where the antenna coil102is located cover the first conductor segment122, the area of the second magnetic region112on the plane of the X axis and the Y axis, and the area of the first magnetic region110on the plane of the X axis and the Y axis may be combined or split based on actual situation.

Structure and position of the conductive element103is taken as examples in following embodiments.

In some embodiments, as shown inFIGS.11and12, the conductive element103may be close to the first conductor segment122and disposed opposite to the first conductor segment122along direction of the antenna coil102toward to the magnetic substrate101. In other words, the conductive element103may be disposed opposite to the first conductor segment122along the Z axis.

The direction of the current in the conductive element103may be opposite to the direction of the current in the first conductor segment122, such that the direction of the magnetic field generated by the conductive element103disposed on the magnetic substrate101is opposite to the direction of the magnetic field generated by the first conductor segment122. Therefore, the magnetic field generated by the conductive element103disposed on the magnetic substrate101can cancel out the magnetic field generated by the first conductor segment122and further weaken magnetic conduction effect of the magnetic substrate101to the first conductor segment122, thereby enhancing the magnetic field strength around the second conductor segment124.

In some embodiments, as shown inFIGS.11and12, the conductive element103may be disposed between the antenna coil102and the conductive element103. In other words, the antenna coil102, the conductive element103, and the magnetic substrate101may be orderly disposed. The current in the first conductor segment122is opposite to the forward of the X axis, and the current in the conductive element103is the same as the forward of the X axis. In other words, the current in the first conductor segment122is opposite to the current in the conductive element103. In this way, direction of magnetic field generated by the first conductor segment122on the magnetic substrate101may be the same as the forward of the Y axis, and direction of magnetic field generated by the conductive element103on the magnetic substrate101may be opposite to the forward of the Y axis. Therefore, the magnetic field generated by the conductive element103on the magnetic substrate101can cancel out the magnetic field generated by the first conductor segment122on the magnetic substrate101. In addition, the conductive element103can enhance magnetic field strength of magnetic field generated by the second conductor segment124in the same direction as the magnetic field.

In other embodiments, the conductive element103may be also disposed on a side of the antenna coil102away from the magnetic substrate101. In other words, the conductive element103, the antenna coil102, and the magnetic substrate101may be orderly disposed along the backward of the Z axis. The direction of the current in the conductive element103is opposite to the direction of the current in the first conductor segment122, such that the direction of magnetic field generated by the conductive element103on the magnetic substrate101is opposite to direction of magnetic field generated by the first conductor segment122on the magnetic substrate101.

In some embodiments, orthographic projection of the conductive element103on the plane where the antenna coil102is located cover the first conductor segment122. In other words, the orthographic projection of the conductive element103on the plane where the magnetic substrate101is located and the orthographic projection of the conductive element103on the plane where the magnetic substrate101is located may partly overlap.

Orthographic projection of the conductive element103on the plane where the magnetic substrate101is located may cover orthographic projection of the first conductor segment122on the plane where the magnetic substrate101is located, such that the magnetic field generated by the conductive element103can cancel out the magnetic field generated by the first conductor segment122, thereby improving performance of the antenna apparatus10.

Specifically, as shown inFIGS.11and12, the antenna coil102and the magnetic substrate101may be disposed along the plane of the X axis and the Y axis. The conductive element103and the first conductor segment122may be oppositely disposed along the Z axis. The first conductor segment122may include a plurality of wires side by side on the plane of the X axis and the Y axis. Along the forward of the Y axis, the conductive element103may be a substrate wider than the first conductor segment122. It should be understood that, in the plane of the X axis and Y axis, area of the conductive element103may larger than or equal to area of the first conductor segment122. In other embodiments, the area of the conductive element103may smaller than the area of the first conductor segment122. When the first conductor segment122includes one wire, area of the first conductor segment122is cross-sectional area of the one wire on the plane of the X axis and the Y axis. When the first conductor segment122includes a plurality of wires, area of the first conductor segment122is sum of cross-sectional area of the plurality of wires and space between the plurality of wires on the plane of the X axis and the Y axis.

The conductive element103and the first conductor segment122may be oppositely disposed along the Z axis, such that the magnetic field generated by the conductive element103on the magnetic substrate101, thereby reducing the influence of the magnetic field on the magnetic substrate101generated by the first conductor segment122on the magnetic field on the magnetic substrate101generated by the second conductor segment124.

In other embodiments, as shown inFIGS.11and12, the orthographic projection of the conductive element103on the plane where the antenna coil102is located may be partly located on the winding center part120. In other words, the area of the conductive element103on the plane of the X axis and the Y axis may be larger than the area of the first conductor segment122on the plane of the X axis and the Y axis.

As shown inFIG.12, the antenna coil102and the conductive element103may be located on the two opposite surfaces of the dielectric substrate respectively105. In some embodiments, the conductive element103may be adhered to the second surface of the dielectric substrate105toward to the magnetic substrate101by adhering, and the antenna coil102may be adhered to the first surface of the dielectric substrate105away from the magnetic substrate101by adhering, which is easy to operate and conductive to machine the antenna apparatus10.

In other embodiments, the conductive element103may be disposed on the dielectric substrate105. Manner of the conductive element103disposed on the dielectric substrate105may include but not limit to coating, etching and imprinting. In this embodiment, size of the antenna apparatus10along the Z axis may be reduced. In addition, the antenna coil102and the conductive element103may be manufactured by the same process, thereby improving uniformity of the antenna apparatus10and reducing step of the process.

As shown inFIG.13, when the conductive element103and the antenna coil102is disposed on the dielectric substrate105, the dielectric substrate105may include an insulation layer152. The antenna coil102and the conductive element103may be respectively disposed on two opposite sides of the insulation layer152. In other words, the antenna coil102, the insulation layer152, and the conductive element103may be orderly disposed on the dielectric substrate105along the backward of the Z axis. In some embodiments, the conductive element103, the insulation layer152, and the antenna coil102may be orderly disposed on the dielectric substrate105along the forward of the Z axis. The insulation layer152may be disposed in the dielectric substrate105, thereby preventing the antenna coil102and the conductive element103from interfering with each other.

Further, as shown inFIGS.13and14, the antenna coil10may also include an electric connector106disposed on the dielectric substrate105. The electric connector106may be disposed between the antenna coil102and the conductive element103. The electric connector106may be configured to electrically connect to the antenna coil102and the conductive element103, such that the antenna coil102and the conductive element103may be connected in series in a same circuit. Manner of the conductive element103disposed on the electric connector106may include but not limit to coating, etching and imprinting.

Specifically, as shown inFIGS.13and14, the electric connector106may include a first electric connector106aand a second electric connector106b. The first electric connector106amay be configured to electrically connect to feed ends of the conductive element103and the antenna coil102. The second electric connector106bmay be configured to electrically connect to feed ends of the first conductor segment122and the conductive element103.

The antenna coil102and the conductive element103may be connected in series through the electric connector106, thereby reducing circuit in the antenna coil10. In addition, in response to the antenna coil102and the conductive element103being connected in series, value of the current in the antenna coil102and the conductive element103. Therefore, waste can be avoided when the value of the current in the conductive element103is too large. In some embodiments, situation of the magnetic field generated by the conductive element103cancelling out less magnetic field generated by the first conductor segment122when the value of the current in the conductive element103is too small can be avoided.

In some embodiments, as shown inFIGS.13and14, the antenna coil102may also include a first feed portion121and a second feed portion123. The first feed portion121, the second feed portion123, the first conductor segment122, and the second conductor segment124may be disposed on the same plane (the plane of the X axis and the Y axis). The first feed portion121, the conductive element103, the antenna coil102, and the second feed portion123may be orderly connected in series. Specifically, an end of the first feed portion121may be electrically connected to the first electric connector106a, an end of the first electric connector106aaway from the first feed portion121may be electrically connected to the conductive element103, an end of the conductive element103away from the first electric connector106amay be electrically connected to the second electric connector106b, an end of t the second electric connector106baway from the conductive element103may be electrically connected to the first conductor segment122, and an end of the first conductor segment122away from the second electric connector106bmay be electrically connected to the second feed portion123. Therefore, the first feed portion121, the first electric connector106a, the conductive element103, the second electric connector106b, the antenna coil102, and the second feed portion123may form conducting circuit.

In some embodiments, as shown inFIGS.13and14, a first connecting hole (not shown in the drawings) and a second connecting hole (not shown in the drawings) are defined in the dielectric substrate105. The first connecting hole and the second connecting hole may be through hole defined in the insulation layer152of the dielectric substrate105. The first connecting hole and the second connecting hole may be configured to receive the first electric connector106aand the second electric connector106b.

Further, as shown inFIG.15, antenna coil10may further include a shielding member104. The shielding member104may be a medium with a magnetic permeability different from a magnetic permeability of air. In response to the magnetic field generated by the first conductor segment122arriving the shielding member104through the air, the shielding member104enables the magnetic field strength and direction of the magnetic field generated by the first conductor segment122to change, thereby causing magnetic shield. In some embodiments, the shielding member104may be a metal shielding member104. In response to the current in the first conductor segment122changing, the metal shielding member104cuts magnetic induction wire and generates Induced current and induced magnetic field, thereby cancelling out the magnetic field generated by the current in the first conductor segment122.

Specifically, the shielding member104may be disposed between the conductive element103and the first conductor segment122. In some embodiments, the shielding member104may be disposed between the conductive element103and the magnetic substrate101.

In some embodiments, the shielding member104may be disposed between the conductive element103and the magnetic substrate101, and the shielding member104may be disposed on the dielectric substrate105. The shielding member104may be disposed on the dielectric substrate105through the process of coating, etching and imprinting, and disposed between the conductive element103and the magnetic substrate101. That is, the first conductor segment122, the shielding member104, the conductive element103, and the magnetic substrate101may be orderly disposed on the antenna apparatus10along the backward of the Z axis.

In other embodiments, the shielding member104may be disposed between the conductive element103and the first conductor segment122. That is, the first conductor segment122, the shielding member104, the conductive element103, and the magnetic substrate101may be orderly disposed on the antenna apparatus10along the backward of the Z axis.

In other embodiments, the shielding member104and the conductive element103may be disposed on same layer of the dielectric substrate105, and insulating material may be disposed between the shielding member104and the conductive element103. In other words, the shielding member104may be flush with the conductive element103along the Z axis.

The shielding member104may shield the magnetic field generated by the first conductor segment122, and then reduce the magnetic field strength of the magnetic field generated by the first conductor segment122on the magnetic substrate101, such that the magnetic field generated by the current in the first conductor segment122cancel out less magnetic field generated by the current in the second conductor segment124. Therefore, the magnetic field strength around the second conductor segment124can be enhanced.

An antenna apparatus is provided, and includes a dielectric substrate, a conductive element and an antenna coil disposed on a first surface of the dielectric substrate; the antenna coil includes a winding center part, at least one first conductor segment and at least one second conductor segment, the first conductor segment and the second conductor segment are respectively disposed on two opposite sides of the winding center par, the first conductor segment and the second conductor segment are in series connection; the conductive element is disposed on a second surface of the dielectric substrate opposite to the first surface or disposed in an interior of the dielectric substrate, disposed opposite to the first conductor segment, and the conductive element is electrically connected to the first conductor segment; orthographic projection of the conductive element on the dielectric substrate covers at least one part of orthographic projection of the first conductor segment on the dielectric substrate; a magnetic field generated by the conductive element is configured to cancel out a magnetic field generated by the first conductor segment.

In some embodiments, the first conductor segment includes a first conductor sub-segment and a second conductor sub-segment, the second conductor segment includes a third conductor sub-segment and a fourth conductor sub-segment; the first conductor sub-segment and the third conductor sub-segment are respectively disposed on two opposite sides of the winding center part along a first direction, and the second conductor sub-segment and the fourth conductor sub-segment are respectively disposed on two opposite sides of the winding center part along a second direction; the first direction intersects the second direction; the conductive element includes a first conductive part and a second conductive part intersecting the first conductive part, the first conductive part is configured to cancel out a magnetic field generated by the first conductor sub-segment, and the second conductive part is configured to cancel out a magnetic field generated by the second conductor sub-segment.

In some embodiments, the antenna apparatus further includes a magnetic substrate disposed opposite to the dielectric substrate; a magnetic field on the dielectric substrate generated by the conductive element is configured to cancel out at least one part of a magnetic field on the dielectric substrate generated by the first conductor segment.

In some embodiments, a plane where the magnetic substrate is located is parallel to a plane where the antenna coil is located; the conductive element is disposed on one side of the antenna coil toward to the magnetic substrate; or the conductive element is disposed on the one side of the antenna coil away from the magnetic substrate.

In some embodiments, orthographic projection of the magnetic substrate on a plane where the antenna coil is located covers at least part of the second conductor segment.

In some embodiments, the magnetic substrate includes a first magnetic region, a second magnetic region, and a third magnetic region which are connected; the third magnetic region is disposed between the first magnetic region and the second magnetic region; orthographic projection of the third magnetic region on the plane where the antenna coil is located covers the second conductor segment; orthographic projection of the first magnetic region on the plane where the antenna coil is located covers at least part of the winding center part; orthographic projection of the second magnetic region on the plane where the antenna coil is located is located on a side of the second conductor segment away from the winding center part.

In some embodiments, the orthographic projection of the first magnetic region on the plane where the antenna coil is located covers at least part of the first conductor segment.

In some embodiments, area of the second magnetic region is larger than or equal to area of the first magnetic region.

In some embodiments, direction of current in the first conductor segment is opposite to direction of current in the conductive element.

In some embodiments, orthographic projection of the conductive element on the plane where the antenna coil is located covers the first conductor segment.

In some embodiments, the antenna coil includes a plurality of first conductor segments spaced apart, the orthographic projection of the conductive element on the plane where the antenna coil is located covers the plurality of first conductor segments.

In some embodiments, the orthographic projection of the conductive element on the plane where the antenna coil is located covers at least part of the winding center part.

In some embodiments, in direction of the first conductor segment toward to the second conductor segment, a width of the first conductor segment is smaller than a width of the second conductor segment.

In some embodiments, the antenna apparatus further includes a shielding member disposed on the dielectric substrate; the shielding member is configured to shield at least part of magnetic field generated by the first conductor segment.

In some embodiments, the shielding member is disposed between the first conductor segment and the conductive element; or the antenna apparatus includes a magnetic substrate disposed opposite to the dielectric substrate, the shielding member is disposed between the conductive element the magnetic substrate.

In some embodiments, the antenna apparatus further includes a first feed portion and a second feed portion disposed on a side of the first conductor segment away from the winding center part; the first feed portion, conductive element, the first conductor segment, the second conductor segment, and the second feed portion are orderly connected in series.

In some embodiments, the dielectric substrate includes an insulation layer disposed in the dielectric substrate, and the conductive element and the antenna coil are respectively disposed two opposite sides of the insulation layer.

In some embodiments, the antenna apparatus further includes at least two electric connectors; the dielectric substrate further includes at least two connecting holes passing through the insulation layer, the electric connectors are disposed in the connecting holes, at least one of the electric connectors is configured to electrically connected to the conductive element and the first feed portion, at least one of the electric connectors is configured to electrically connected to the conductive element and the first conductor segment.

An electronic device is provided, and includes a camera module and any antenna apparatus mentioned above, the antenna apparatus is disposed around the camera module; or the antenna apparatus is disposed opposite to the camera module.

In some embodiments, the antenna apparatus rounds at least two adjacent sides of the camera module.

Above description are only specific embodiments of the present disclosure, but does not limit the protection scope of the present disclosure. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present disclosure, and these should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of claims.