Electronic device and communication system

Abstract

The application provides an electronic device and a communication system. The electronic device comprises a functional conductor and an NFC antenna radiator. The functional conductor is annular, and an inner edge of the functional conductor surrounds to form a hollow area. The NFC antenna radiator is located on one side of the functional conductor and transmits and receives NFC signals at least towards the side of the functional conductor. At least part of the NFC antenna radiator is located in the hollow area in the orthographic projection of the side of the functional conductor. The NFC antenna radiator is electrically connected to a radio frequency signal source. Under the excitation of the radio frequency signal source, the NFC antenna radiator generates first and second electromagnetic fields with opposite directions in the hollow area, so that the functional conductor generates first and second induced currents with opposite directions. The communication system comprises an NFC device and the electronic device. The electronic device and the communication system provided by the application can improve the NFC communication performance and improve the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, in particular to an electronic device and a communication system. BACKGROUND

[0002] Near Field Communication (NFC) technology can realize mobile payment, electronic ticketing, access control, mobile identity recognition, anti-counterfeiting, etc. In related technologies, the NFC antenna of an electronic device is shielded by a metal decoration piece of a camera module, resulting in a communication blind area and affecting user experience. SUMMARY

[0003] The present application provides an electronic device and a communication system capable of improving NFC communication performance and improving user experience.

[0004] In one aspect, the present application provides an electronic device, comprising:

[0005] a functional conductor, the functional conductor being annular, and an inner edge of the functional conductor surrounding to form a hollow area; and

[0006] an NFC antenna radiator located on one side of the functional conductor and transmitting and receiving NFC signals at least towards the side where the functional conductor is located, at least part of the NFC antenna radiator being located in the projection of the functional conductor on the side where the functional conductor is located.

[0007] The NFC antenna radiator is electrically connected to a radio frequency signal source, and under the excitation of the radio frequency signal source, the NFC antenna radiator generates a first electromagnetic field and a second electromagnetic field in the hollow area, so that the functional conductor generates a first induced current and a second induced current, the direction of the first electromagnetic field is opposite to the direction of the second electromagnetic field, and the direction of the first induced current is opposite to the direction of the second induced current.

[0008] In another aspect, the present application also provides a communication system, comprising an NFC device and the electronic device, and the NFC device and the electronic device perform wireless communication.

[0009] The electronic device provided in the application comprises a functional conductor, the functional conductor is annular, an inner edge of the functional conductor surrounds to form a hollow area, an NFC antenna radiator is located on one side of the functional conductor, and a projection of at least part of the NFC antenna radiator on a plane of the functional conductor is located in the hollow area. Therefore, a radiation field generated by at least part of the NFC antenna radiator can cover the hollow area of the functional conductor, a communication blind area can be reduced, NFC communication performance of the electronic device can be improved, and user experience can be improved. In addition, under the excitation of a radio frequency signal source, the NFC antenna radiator generates a first electromagnetic field and a second electromagnetic field in opposite directions in the hollow area, the functional conductor generates a first induced current and a second induced current in opposite directions, the first induced current and the second induced current generated by the functional conductor offset each other, generation of annular eddy current can be inhibited, and therefore the problem that the radiation signal of the NFC antenna radiator is shielded by the functional conductor can be solved, and NFC communication performance can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments will be briefly introduced.

[0011] Figure 1 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0012] Figure 2 A structural schematic diagram of an electronic device provided in the application is shown in the figure. Figure 1 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0013] Figure 3 A structural schematic diagram of an electronic device provided in the application is shown in the figure. Figure 2 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0014] Figure 4 A structural schematic diagram of an electronic device provided in the application is shown in the figure. Figure 3 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0015] Figure 5 A structural schematic diagram of an electronic device provided in the application is shown in the figure. Figure 4 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0016] Figure 6 A structural schematic diagram of an electronic device provided in the application is shown in the figure. Figure 4 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0017] Figure 7 A structural schematic diagram of an electronic device provided in the application is shown in the figure. Figure 3 A structural schematic diagram of an electronic device provided in the application is shown in the figure.

[0018] Figure 8 for Figure 3 The diagram shows the planar structure of the NFC antenna radiator projected onto the surface of the functional conductor and extending along a straight line within the hollow area.

[0019] Figure 9 for Figure 3 A schematic diagram of a planar structure in which the orthographic projection of the NFC antenna radiator onto the plane containing the functional conductor covers at least part of the center line of the inner edge of the functional conductor.

[0020] Figure 10 for Figure 3 This is a schematic diagram of another planar structure of the NFC antenna radiator, where the orthographic projection of the radiator onto the plane of the functional conductor covers at least part of the center line of the inner edge of the functional conductor.

[0021] Figure 11 for Figure 3 The diagram shows another planar structure of the NFC antenna radiator, whose orthographic projection onto the plane of the functional conductor covers at least part of the center line of the inner edge of the functional conductor.

[0022] Figure 12 for Figure 10 The schematic diagram of the planar structure of the electronic device shown, in which the orthographic projections of one end of the NFC antenna radiator and the other end of the NFC antenna radiator on the plane where the functional conductor is located are both located in the hollow area.

[0023] Figure 13 for Figure 10 The diagram shows a planar structure in which the orthographic projection of one end of the NFC antenna radiator onto the surface of the functional conductor is located in the hollow area, and the orthographic projection of the other end of the NFC antenna radiator onto the surface of the functional conductor overlaps with the functional conductor.

[0024] Figure 14 for Figure 10 The diagram shows a planar structure of an electronic device in which the orthographic projection of one end of the NFC antenna radiator onto the surface of the functional conductor is located in the hollow area, and the orthographic projection of the other end of the NFC antenna radiator onto the surface of the functional conductor is located outside the functional conductor.

[0025] Figure 15 for Figure 10 The schematic diagram shows a planar structure in which the orthographic projections of one end of the NFC antenna radiator and the other end of the NFC antenna radiator onto the plane containing the functional conductor overlap with the functional conductor.

[0026] Figure 16 for Figure 10The diagram shows a planar structure in which the orthographic projection of one end of the NFC antenna radiator onto the plane of the functional conductor overlaps with the functional conductor, while the orthographic projection of the other end of the NFC antenna radiator onto the plane of the functional conductor is located outside the functional conductor.

[0027] Figure 17 for Figure 10 The schematic diagram of the planar structure of the electronic device shown, in which the orthographic projections of one end of the NFC antenna radiator and the other end of the NFC antenna radiator on the plane where the functional conductor is located are both located outside the functional conductor.

[0028] Figure 18 for Figure 15 The diagram shows a planar structure of the NFC antenna radiator in the electronic device, which divides the functional conductor into a first conductive part and a second conductive part.

[0029] Figure 19 for Figure 16 The diagram shows a planar structure of the NFC antenna radiator in the electronic device, which divides the functional conductor into a first conductive part and a second conductive part.

[0030] Figure 20 for Figure 17 The diagram shows a planar structure of the NFC antenna radiator in the electronic device, which divides the functional conductor into a first conductive part and a second conductive part.

[0031] Figure 21 for Figure 9 The diagram shows a planar structure of the NFC antenna radiator in the electronic device, which divides the functional conductor into a first conductive part and a second conductive part.

[0032] Figure 22 for Figure 10 The NFC antenna radiator in the electronic device shown is a schematic diagram of a planar structure comprising multiple spaced wire segments.

[0033] Figure 23 for Figure 12 The diagram shows a first type of planar structure in which the NFC antenna radiator of the electronic device is in the form of a ring.

[0034] Figure 24 for Figure 13 The diagram shows a second type of planar structure in which the NFC antenna radiator of the electronic device is in the form of a ring.

[0035] Figure 25 for Figure 14 The diagram shows a third type of planar structure in which the NFC antenna radiator of the electronic device is in the shape of a ring.

[0036] Figure 26 for Figure 15The diagram shows a fourth type of planar structure in which the NFC antenna radiator of the electronic device is in the shape of a ring.

[0037] Figure 27 for Figure 16 The diagram shows a fifth type of planar structure in which the NFC antenna radiator of the electronic device is in the form of a ring.

[0038] Figure 28 for Figure 17 The diagram shows a sixth type of planar structure where the NFC antenna radiator of the electronic device is in the shape of a ring.

[0039] Figure 29 This is a schematic diagram of a planar structure of an NFC antenna radiator in an electronic device according to an embodiment of the present application, including a first radiating part and a second radiating part arranged opposite to each other.

[0040] Figure 30 This is a schematic diagram of another planar structure of the NFC antenna radiator in the electronic device according to an embodiment of the present application, including a first radiating part and a second radiating part arranged opposite to each other;

[0041] Figure 31 for Figure 28 The first radiating part of the NFC antenna radiator in the electronic device shown includes one or more first wire segments, and the second radiating part may include one or more second wire segments in a planar structure diagram.

[0042] Figure 32 for Figure 11 The electronic device shown also includes a schematic diagram of a planar structure of electrical connectors electrically connected to both ends of the NFC antenna radiator;

[0043] Figure 33 for Figure 11 The electronic device shown also includes another planar structure diagram of electrical connectors electrically connected to both ends of the NFC antenna radiator.

[0044] Figure 34 This is a schematic diagram of the structure of a communication system provided in an embodiment of this application.

[0045] Explanation of reference numerals in the attached drawings: Electronic device 1000; Display screen 200; Housing 300; Circuit board 400; Camera module 500; Mid-frame 301; Back cover 302; Circuit board 400; Camera module 500; Functional conductor 501; NFC antenna radiator 100; Radio frequency signal source 600; Inner edge 510; Outer edge 511; Hollowed-out area 512; First radiating part 101; First conductive part 513; Second conductive part 514; First sub-hollowed-out area 5120; Second sub-hollowed-out area 5121; First conductor segment 110; Second radiating part 102; Second conductor segment 120; Electrical connector 700; Communication system 2000; NFC device 3000. Detailed Implementation

[0046] The technical solutions provided in this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort are within the protection scope of this application.

[0047] In this application, the terms "embodiment" or "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment or implementation can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0048] The terms “first,” “second,” etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, rather than to describe a particular order; the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion.

[0049] like Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of this application. The electronic device 1000 can be a mobile phone, tablet computer, watch, bracelet, or other device with NFC communication function. This embodiment of the application takes a mobile phone as an example.

[0050] Please refer to Figure 1 and Figure 2 The electronic device 1000 includes a display screen 200, a housing 300, a circuit board 400, and a camera module 500.

[0051] Display screen 200 is used to display images, videos, etc. When classified by bending performance, display screen 200 can be a flexible display screen or a rigid display screen. When classified by light source, display screen 200 can be an organic light-emitting diode (OLED) display screen, a light-emitting diode (LED) display screen, a liquid crystal display (LCD) display screen, etc.

[0052] The housing 300 includes a mid-frame 301 and a rear cover 302. The rear cover 302 is positioned opposite the display screen 200, and the mid-frame 301 connects the display screen 200 and the rear cover 302. A receiving space is formed between the mid-frame 301, the rear cover 302, and the display screen 200. The material of the mid-frame 301 and the rear cover 302 can be the same or different. For example, the material of the mid-frame 301 may include metal, alloy, composite material, plastic, glass, etc. The material of the rear cover 302 may include plastic, glass, ceramic, metal, alloy, etc.

[0053] Circuit board 400 is housed within a housing space. When classified by the number of structural layers, circuit board 400 can be a single-sided circuit board, a double-sided circuit board, or a multilayer circuit board. When classified by bending characteristics, circuit board 400 can be a flexible circuit board, a rigid circuit board, or a rigid-flex board. When classified by molding process, circuit board 400 can be a printed circuit board (PCB), a flexible printed circuit board (FPC), or a laser-directed structuring (LDS) circuit board, etc.

[0054] Camera module 500 is a rear-facing camera module. Understandably, camera module 500 acquires light from the side opposite to display screen 200 to form an image. Camera module 500 may include one or more cameras; that is, camera module 500 may be a single-camera module, a dual-camera module, or a multi-camera module. Optionally, the camera module may include a main camera, and be paired with any one or more of a wide-angle camera, a telephoto camera, a macro camera, and a depth-sensing camera. Each camera may include an optical lens and an image sensor. The optical lens is used for light processing. The optical lens may be a fixed-focus lens, a telephoto lens, an auto-zoom lens, etc. The image sensor performs photoelectric conversion. The image sensor may be a solid-state image sensor, such as a charge-coupled device (CCD) sensor, a complementary metal-oxide-semiconductor (CMOS) sensor, etc.

[0055] like Figure 3 As shown, the electronic device 1000 also includes a functional conductor 501, an NFC antenna radiator 100, and a radio frequency signal source 600.

[0056] The functional conductor 501 can be a conductive object in the electronic device 1000 having one or more functions of decoration, support, connection, strength increase, etc. For example, the functional conductor 501 can be a decorative piece of the camera module 500, a decorative piece of the back cover 302, a support of the camera module 500, a reinforcing piece of the back cover 302, etc. The material of the functional conductor 501 can be metal, alloy, etc. The functional conductor 501 is annular. For example, the functional conductor 501 can be a circular ring conductor, an elliptical ring conductor, a rectangular ring conductor, a square ring conductor, other polygonal ring conductors, and various irregular ring conductors, etc. It can be understood that the functional conductor 501 can form a closed loop, i.e., the functional conductor 501 is closed. The annular functional conductor 501 includes an inner edge 510 and an outer edge 511. The inner edge 510 of the functional conductor 501 surrounds to form a hollow area 512. The shape of the hollow area 512 is not specifically limited in the present application. For example, the shape of the hollow area 512 can be circular, elliptical, rectangular, square, other polygonal, and various irregular shapes, etc. It can be understood that the shape of the hollow area 512 is the shape of the inner edge 510 of the functional conductor 501. The shape of the inner edge 510 of the functional conductor 501 can be the same as or different from the shape of the outer edge 511 of the functional conductor 501, and can be designed according to actual needs.

[0057] The NFC antenna radiator 100 is a conductor capable of obtaining current of certain frequency and transforming into NFC electromagnetic wave signals radiated towards space, or vice versa. In other words, the NFC antenna radiator 100 is capable of transmitting and receiving NFC signals under the excitation of the radio frequency signal source 600. The NFC antenna radiator 100 can be a coil radiator, a plate-shaped radiator (for example, an FPC antenna radiator), etc. In a possible embodiment, the NFC antenna radiator 100 can be one of an FPC antenna radiator, an LDS antenna radiator, and a PCB antenna radiator. The material of the NFC antenna radiator 100 can be metal, alloy, etc. The NFC antenna radiator 100 is located on one side of the functional conductor 501. The NFC antenna radiator 100 transmits and receives NFC signals at least towards the side where the functional conductor 501 is located. In other words, the functional conductor 501 is located on the signal transmitting and receiving side of the NFC antenna radiator 100. In a possible embodiment, the NFC antenna radiator 100 is located in the accommodation space of the electronic device 1000. The NFC antenna radiator 100 can transmit and receive NFC signals towards the side where the back cover 302 of the electronic device 1000 is located. In the thickness direction of the electronic device 1000, the functional conductor 501 can be located between the NFC antenna radiator 100 and the back cover, or on the side of the back cover away from the NFC antenna radiator 100. The thickness direction of the electronic device 1000 can refer to the Z-axis direction of the accompanying drawings. At least part of the NFC antenna radiator 100 is located in the positive projection of the functional conductor 501 on the surface of the hollow area 512. It can be understood that part of the NFC antenna radiator 100 is located in the positive projection of the functional conductor 501 on the surface of the hollow area 512, or all of the NFC antenna radiator 100 is located in the positive projection of the functional conductor 501 on the surface of the hollow area 512.

[0058] The NFC antenna radiator 100 is electrically connected to the radio frequency signal source 600. The radio frequency signal source 600 can be a radio frequency chip, a radio frequency module, etc. for providing radio frequency current. The NFC antenna radiator 100 and the radio frequency signal source 600 can be directly electrically connected or indirectly electrically connected. For example, the NFC antenna radiator 100 and the radio frequency signal source 600 can be electrically connected through one or more of the electrically conductive spring, the electrically conductive wire, the electrically conductive column, the feeding probe, the circuit board, etc. Under the excitation of the radio frequency signal source 600, the NFC antenna radiator 100 generates electromagnetic fields in the hollow area 512 in opposite directions, so that the functional conductor 501 generates induced currents in opposite directions. In other words, under the excitation of the radio frequency signal source 600, the NFC antenna radiator 100 generates first and second electromagnetic fields in the hollow area 512, so that the functional conductor 501 generates first and second induced currents. The direction of the first electromagnetic field is opposite to the direction of the second electromagnetic field, and the direction of the first induced current is opposite to the direction of the second induced current.

[0059] For example, the first electromagnetic field generated by the NFC antenna radiator 100 in one part of the hollow area 512 is opposite to the second electromagnetic field generated by the NFC antenna radiator 100 in another part of the hollow area 512 under the excitation of the radio frequency signal source 600, and the first induced current generated by the functional conductor 501 close to the one part of the hollow area 512 is opposite to the second induced current generated by the functional conductor 501 close to the another part of the hollow area 512. In a possible embodiment, the first electromagnetic field and the second electromagnetic field generated by the NFC antenna radiator 100 in the hollow area 512 are distributed on both sides of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 along the extension direction of the projection. The extension direction of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 in the embodiment of the application can refer to the X-axis direction of FIG. 8. Figure 3 The extension direction of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 can also be understood as the length direction of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501.

[0060] In a possible application scenario, as shown in FIG. 9, the NFC antenna radiator 100 has an NFC current I1 under the excitation of the radio frequency signal source 600, and the flow direction of the NFC current I1 can refer to I1 shown in FIG. 10. Figure 4 At this time, the NFC antenna radiator 100 generates a first electromagnetic field (EMF) EMF1 in the hollow area 512 on one side of the extension direction of the NFC antenna radiator 100, and the direction of the first electromagnetic field EMF1 can refer to EMF1 shown in FIG. 11; the NFC antenna radiator 100 generates a second electromagnetic field EMF2 in the hollow area 512 on the other side of the extension direction of the NFC antenna radiator 100, and the direction of the second electromagnetic field EMF2 can refer to EMF2 shown in FIG. 12. The functional conductor 501 close to the first electromagnetic field EMF1 generates a first induced current I2, and the flow direction of the first induced current I2 can refer to I2 shown in FIG. 13; the functional conductor 501 close to the second electromagnetic field EMF2 generates a second induced current I3, and the flow direction of the second induced current I3 can refer to I3 shown in FIG. 14. Figure 4 Figure 4 Figure 4 Figure 4 Figure 4 Since the direction of the first electromagnetic field EMF1 is opposite to the direction of the second electromagnetic field EMF2, the direction of the first induced current I2 is opposite to the direction of the second induced current I3 (I2 clockwise and I3 counterclockwise), that is, the functional conductor 501 generates induced currents in opposite directions. The induced currents in opposite directions generated by the functional conductor 501 can inhibit the formation of annular eddy current, thereby reducing the shielding effect on the NFC antenna radiator 100 and improving the performance of the NFC antenna radiator 100 in transmitting and receiving NFC signals through the side where the functional conductor 501 is located.

[0061] Please refer to​​​​Figure 5 and Figure 6 , Figure 5 as shown in the electronic device 1000, Figure 4 the distribution of the first electromagnetic field and the second electromagnetic field of the NFC antenna radiator 100 on both sides of the electronic device 1000, Figure 6 as shown in the electronic device 1000, Figure 4 the distribution of the first induced current and the second induced current of the functional conductor 501. As can be seen from Figure 5 , the NFC antenna radiator 100 generates the first electromagnetic field EMF1 and the second electromagnetic field EMF2 in the opposite directions in the hollow area 512. As can be seen from Figure 6 , the inner edge of the functional conductor 501 generates the first induced current I2 and the second induced current I3 in the opposite directions.

[0062] In another possible application scenario, as shown in Figure 7 , the NFC antenna radiator 100 has an NFC current I4 under the excitation of the radio frequency signal source 600, the flow direction of which can be referred to I4 shown in the attached Figure 7 . At this time, the NFC antenna radiator 100 generates the first electromagnetic field EMF3 in the hollow area 512 on one side of the extension direction of the NFC antenna radiator 100, the direction of which can be referred to EMF3 shown in the attached Figure 7 ; the NFC antenna radiator 100 generates the second electromagnetic field EMF4 in the hollow area 512 on the other side of the extension direction of the NFC antenna radiator 100, the direction of which can be referred to EMF4 shown in the attached Figure 7 . The first induced current I5 generated by the functional conductor 501 close to the first electromagnetic field EMF3, the flow direction of which can be referred to I5 shown in the attached Figure 7 ; the second induced current I6 generated by the functional conductor 501 close to the second electromagnetic field EMF4, the flow direction of which can be referred to I6 shown in the attached Figure 7 . Since the direction of the first electromagnetic field EMF3 is opposite to the direction of the second electromagnetic field EMF4, the direction of the first induced current I5 is opposite to the direction of the second induced current I6 (I5 counterclockwise, I6 clockwise), that is, the functional conductor 501 generates the induced currents in the opposite directions. Similarly, the induced currents in the opposite directions generated by the functional conductor 501 can suppress the formation of the annular eddy current, thereby reducing the shielding effect on the NFC antenna radiator 100 and improving the performance of the NFC antenna radiator 100 in transmitting and receiving NFC signals through the side where the functional conductor 501 is located.

[0063] The electronic device 1000 provided in the application includes a functional conductor 501, the functional conductor 501 is annular, the inner edge 510 of the functional conductor 501 surrounds to form a hollow area 512, the NFC antenna radiator 100 is located on one side of the functional conductor 501, and the orthographic projection of at least part of the NFC antenna radiator 100 on the plane where the functional conductor 501 is located is located in the hollow area 512, so that the radiation field generated by at least part of the NFC antenna radiator 100 can cover the hollow area 512 of the functional conductor 501, the communication blind area can be reduced, the NFC communication performance of the electronic device 1000 is improved, and the user experience is improved. In addition, the orthographic projection of at least part of the NFC antenna radiator 100 on the plane where the functional conductor 501 is located is located in the hollow area 512, the NFC antenna radiator 100 generates a first electromagnetic field and a second electromagnetic field in the opposite directions in the hollow area 512 under the excitation of the radio frequency signal source 600, the functional conductor 501 can generate a first induced current and a second induced current in the opposite directions, the first induced current and the second induced current generated by the functional conductor 501 in the opposite directions can offset each other, the generation of annular eddy current can be suppressed, and thus the problem that the radiation signal of the NFC antenna radiator 100 is shielded by the functional conductor 501 is solved, and the NFC communication performance is improved.

[0064] Optionally, the functional conductor 501 is a decorative piece of the camera module 500. By making the functional conductor 501 a decorative piece of the camera module 500, the NFC antenna radiator 100 can perform NFC communication in the area where the camera module 500 is arranged, so that even if the number of cameras in the camera module 500 gradually increases and the area occupied by the camera module 500 gradually increases, better NFC communication can be ensured, that is, the electronic device 1000 can meet the requirements of multiple cameras and NFC communication.

[0065] In the related art, the technical solutions of staggering the NFC antenna and the metal decoration piece or arranging the NFC antenna around the metal decoration piece are adopted to make the communication direction of the NFC antenna avoid the metal decoration piece. However, the technical solution of staggering the NFC antenna and the metal decoration piece increases the size of the electronic device because the setting position of the NFC antenna needs to avoid the metal decoration piece, and the area where the metal decoration piece is located cannot be covered by the NFC antenna, a communication blind area appears, and the user experience is affected. When the area of the metal decoration piece is large, the technical solution of arranging the NFC antenna around the metal decoration piece also causes a communication blind area in the central area of the metal decoration piece, and the user experience is affected.

[0066] The technical solution of the present application designs the functional conductor 501 as a ring shape, the inner edge of the functional conductor 501 is surrounded to form a hollow area 512, so that the functional conductor 501 is located on the signal transceiving side of the NFC antenna radiator 100, and the orthographic projection of the NFC antenna radiator 100 on the plane where the functional conductor 501 is located is located in the hollow area 512, so that the NFC antenna radiator 100 can transceive NFC signals through the hollow area 512, and the technical problem that the arrangement area of the NFC antenna radiator 100 is squeezed and there is a blind area in NFC communication due to the increase of the camera module 500 in the existing mobile phone along with the progress of mobile phone photography technology and the gradual occupation of the space on the back of the mobile phone by the decorative parts of the camera module 500 due to the demand for the overall texture of the product appearance design can be solved. The following embodiments take the functional conductor 501 as the decorative part of the camera module 500 as an example in the case where it is not explicitly stated.

[0067] Please refer to Figures 8 to 11 The part of the functional conductor 501 located on one side of the orthographic projection of the NFC antenna radiator 100 on the plane where the functional conductor 501 is located generates a first induced current, and the part of the functional conductor 501 located on the other side of the orthographic projection of the NFC antenna radiator 100 on the plane where the functional conductor 501 is located generates a second induced current. In a possible embodiment, the orthographic projection of the NFC antenna radiator 100 on the plane where the functional conductor 501 is located divides the functional conductor 501 into a first conductive part 513 and a second conductive part 514. The first conductive part 513 generates a first induced current, and the second conductive part 514 generates a second induced current.

[0068] The difference between the size of the first induced current and the size of the second induced current is less than or equal to the size of the preset current. The size of the preset current can be zero or close to zero. In other words, the size of the first induced current generated by the functional conductor 501 and the size of the second induced current can be the same or close, that is, I2 can be equal to or approximately equal to I3, and I5 can be equal to or approximately equal to I6. By making the difference between the size of the first induced current generated by the functional conductor 501 and the size of the second induced current less than or equal to the size of the preset current, the size of the preset current can be designed according to actual needs, so as to control the shielding degree of the functional conductor 501 to the NFC antenna radiator 100. It can be understood that when the size of the preset current is zero or close to zero, it can be considered that the first induced current and the second induced current generated by the functional conductor 501 are completely offset, so as to achieve the effect of completely suppressing the ring-shaped eddy current generated by the functional conductor 501, and at this time the shielding degree of the functional conductor 501 to the NFC antenna radiator 100 is the smallest.

[0069] The first electromagnetic field is generated in the part of the hollow area 512 on one side of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501, and the second electromagnetic field is generated in the part of the hollow area 512 on the other side of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501. In a possible embodiment, the functional conductor 501 and the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 form a first sub-hollow area 5120 and a second sub-hollow area 5121 of the hollow area 512. The first sub-hollow area 5120 generates the first electromagnetic field, and the second sub-hollow area 5121 generates the second electromagnetic field.

[0070] It can be understood that the first conductive part 513 and the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 form a first sub-hollow area 5120 of the hollow area 512, and the second conductive part 514 and the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 form a second sub-hollow area 5121 of the hollow area 512.

[0071] The difference between the magnetic flux of the first electromagnetic field passing through the functional conductor 501 and the magnetic flux of the second electromagnetic field passing through the functional conductor 501 is less than or equal to a preset magnetic flux. The preset magnetic flux can be zero or close to zero. In other words, the magnetic flux of the first electromagnetic field generated by the NFC antenna radiator 100 in the hollow area 512 passing through the functional conductor 501 and the magnetic flux of the second electromagnetic field passing through the functional conductor 501 can be the same or close. By making the difference between the magnetic flux of the first electromagnetic field generated by the NFC antenna radiator 100 in the hollow area 512 passing through the functional conductor 501 and the magnetic flux of the second electromagnetic field passing through the functional conductor 501 less than or equal to the preset magnetic flux, the preset magnetic flux can be designed according to actual needs, thereby controlling the difference between the size of the first induced current and the size of the second induced current generated by the functional conductor 501, so that the difference between the size of the first induced current and the size of the second induced current generated by the functional conductor 501 satisfies the size of the preset current, which is less than or equal to the preset current, and is beneficial to achieve the effect that the first induced current and the second induced current generated by the functional conductor 501 are completely offset.

[0072] Optionally, as Figure 8As shown, the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 extends along a straight line. Of course, in other embodiments, the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 can also extend along an arc, or the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 can also extend along a bend. By making the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 extend along a straight line, it is beneficial to generate one kind of electromagnetic field in the hollow area 512 on one side of the extension direction of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501, and generate another kind of electromagnetic field in the hollow area 512 on the other side of the extension direction of the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501, i.e. generate one kind of electromagnetic field in the first sub-hollow area 5120, and generate another kind of electromagnetic field in the second sub-hollow area 5121. Thus, it is beneficial to realize that the difference between the magnetic flux of the first electromagnetic field generated by the NFC antenna radiator 100 in the hollow area 512 and the magnetic flux of the second electromagnetic field generated by the NFC antenna radiator 100 in the hollow area 512 is less than or equal to a preset magnetic flux, and it is possible to make one side of the NFC antenna radiator 100 correspond to a part of the functional conductor 501 to generate one kind of induced current, and the other side of the NFC antenna radiator 100 correspond to another part of the functional conductor 501 to generate another kind of induced current, i.e. generate one kind of current in the first conductive part 513, and generate another kind of current in the second conductive part 514, so as to realize that the difference between the size of the first induced current generated by the functional conductor 501 and the size of the second induced current generated by the functional conductor 501 is less than or equal to a preset current size. In addition, making the projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 extend along a straight line is also beneficial to reduce the mutual cancellation between the electromagnetic fields generated by the NFC antenna radiator 100 itself, and improve the radiation ability of the NFC antenna radiator 100.

[0073] Optionally, please refer to Figures 9 to 11The central line of the inner edge 510 of the functional conductor 501 can be a regular shape or an irregular shape. In the case where the inner edge 510 of the functional conductor 501 is a regular shape, the central line of the inner edge 510 of the functional conductor 501 is easier to determine. In this case, the orthographic projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 covers at least part of the central line of the inner edge 510 of the functional conductor 501. For example, when the shape of the hollow area 512 is a circle, i.e., the inner edge 510 of the functional conductor 501 is a circle, the central line of the inner edge 510 of the functional conductor 501 is a line segment passing through the center of the circle. When the shape of the hollow area 512 is a rectangle, i.e., the inner edge 510 of the functional conductor 501 is a rectangle, the central line of the inner edge 510 of the functional conductor 501 is a line connecting the midpoints of the two long edges of the inner edge 510 of the functional conductor 501 or a line connecting the midpoints of the two short edges of the inner edge 510 of the functional conductor 501. In the case where the inner edge 510 of the functional conductor 501 is an irregular shape, the central line of the inner edge 510 of the functional conductor 501 is difficult to determine. In this case, the orthographic projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 covering at least part of the central line of the inner edge 510 of the functional conductor 501 can be understood as the orthographic projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 being located in the middle region of the hollow area 512.

[0074] By making the orthographic projection of the NFC antenna radiator 100 on the plane of the functional conductor 501 cover at least part of the center line of the inner edge 510 of the functional conductor 501, it is beneficial to make the size of the partial hollow area 512 on one side of the NFC antenna radiator 100 equal to or approximately equal to the size of another partial hollow area 512 on the other side of the NFC antenna radiator 100 in the extension direction of the NFC antenna radiator 100, so as to make the magnetic flux of the electromagnetic field in the partial hollow area 512 on one side of the NFC antenna radiator 100 through the functional conductor 501 equal to or approximately equal to the magnetic flux of the electromagnetic field in another partial hollow area 512 on the other side of the NFC antenna radiator 100 through the functional conductor 501, that is, it is beneficial to make the difference between the magnetic flux of the first electromagnetic field generated by the NFC antenna radiator 100 in the hollow area 512 through the functional conductor 501 and the magnetic flux of the second electromagnetic field through the functional conductor 501 less than or equal to a preset magnetic flux, and it is beneficial to make the extension size of the corresponding partial functional conductor 501 on one side of the NFC antenna radiator 100 equal to or approximately equal to the extension size of the corresponding another partial functional conductor 501 on the other side of the NFC antenna radiator 100, that is, it is beneficial to make the extension size of the first conductive part 513 equal to or approximately equal to the extension size of the second conductive part 514, so as to make the difference between the size of the first induced current generated by the functional conductor 501 and the size of the second induced current less than or equal to the size of a preset current.

[0075] In a possible embodiment, please refer to Figures 12 to 14 , the orthographic projection of one end of the NFC antenna radiator 100 on the plane of the functional conductor 501 is located in the hollow area 512, and the orthographic projection of the other end of the NFC antenna radiator 100 on the plane of the functional conductor 501 is located in the hollow area 512; or, the orthographic projection of one end of the NFC antenna radiator 100 on the plane of the functional conductor 501 is located in the hollow area 512, and the orthographic projection of the other end of the NFC antenna radiator 100 on the plane of the functional conductor 501 overlaps the functional conductor 501; or, the orthographic projection of one end of the NFC antenna radiator 100 on the plane of the functional conductor 501 is located in the hollow area 512, and the orthographic projection of the other end of the NFC antenna radiator 100 on the plane of the functional conductor 501 is located outside the functional conductor 501.

[0076] As Figure 12As shown, the orthographic projections of one end of the NFC antenna radiator 100 and the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 are both located in the cutout area 512. It can be understood that the orthographic projections of all NFC antenna radiators 100 onto the surface of the functional conductor 501 are located in the cutout area 512. Having the orthographic projections of one end of the NFC antenna radiator 100 and the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 located in the cutout area 512 is beneficial for improving NFC communication performance in solutions with smaller NFC antenna radiator 100 sizes. It also facilitates designing the position of the orthographic projection of the NFC antenna radiator 100 onto the surface of the functional conductor 501 according to communication location requirements. For example, the orthographic projection of the NFC antenna radiator 100 onto the surface of the functional conductor 501 can be located in the middle of the cutout area 512, thereby improving the NFC communication performance in the middle of the functional conductor 501.

[0077] like Figure 13 As shown, the orthographic projection of one end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 is located in the cutout area 512, and the orthographic projection of the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 overlaps with the functional conductor 501. It is understandable that a portion of the orthographic projection of the NFC antenna radiator 100 onto the surface of the functional conductor 501 is located in the cutout area 512. Having one end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 and the other end overlapping with the functional conductor 501 also helps improve NFC communication performance in a smaller NFC antenna radiator 100 design. Furthermore, it allows the orthographic projection of the NFC antenna radiator 100 onto the surface of the functional conductor 501 to be located on one edge of the cutout area 512, thus facilitating the avoidance of structures such as optical lenses in the camera module 500.

[0078] like Figure 14As shown, the orthographic projection of one end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 is located in the cutout area 512, while the orthographic projection of the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 is located outside the functional conductor 501. It is understandable that a portion of the orthographic projection of the NFC antenna radiator 100 onto the surface of the functional conductor 501 is located in the cutout area 512. Having one end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 and the other end outside the functional conductor 501 also allows the orthographic projection of the NFC antenna radiator 100 onto the surface of the functional conductor 501 to be located on one side of the cutout area 512, thus facilitating the avoidance of structures such as optical lenses in the camera module 500. Furthermore, the NFC antenna radiator 100 can also perform NFC communication through areas outside the functional conductor 501, increasing the NFC sensing area and improving NFC communication efficiency.

[0079] In another possible embodiment, please refer to Figures 15 to 17 The orthographic projections of one end of the NFC antenna radiator 100 and the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 overlap with the functional conductor 501; or, the orthographic projection of one end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 overlaps with the functional conductor 501, while the orthographic projection of the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 is located outside the functional conductor 501; or, the orthographic projections of one end of the NFC antenna radiator 100 and the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 are both located outside the functional conductor 501.

[0080] like Figure 15 As shown, the orthographic projection of one end of the NFC antenna radiator 100 onto the surface containing the functional conductor 501 overlaps with the functional conductor 501, and the orthographic projection of the other end of the NFC antenna radiator 100 onto the surface containing the functional conductor 501 also overlaps with the functional conductor 501. It is understood that a portion of the orthographic projection of the NFC antenna radiator 100 onto the surface containing the functional conductor 501 is located in the cutout area 512. The overlap of one end of the NFC antenna radiator 100 onto the surface containing the functional conductor 501, and the overlap of the other end of the NFC antenna radiator 100 onto the surface containing the functional conductor 501, allows the electromagnetic field generated by the NFC antenna radiator 100 to cover the entire cutout area 512. There are no NFC communication blind spots within the cutout area 512, and the size of the NFC antenna radiator 100 matches the size of the functional conductor 501, which is beneficial for designing a smaller NFC antenna radiator 100 and saving internal space in the electronic device 1000.

[0081] likeFigure 16 As shown, the orthographic projection of one end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 overlaps with the functional conductor 501, while the orthographic projection of the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 lies outside the functional conductor 501. It can be understood that the orthographic projection of a portion of the NFC antenna radiator 100 onto the surface of the functional conductor 501 lies within the cutout area 512. One end of the NFC antenna radiator 100 overlaps with the functional conductor 501 in its orthographic projection onto the surface of the functional conductor 501, while the other end of the NFC antenna radiator 100 is located outside the functional conductor 501 in its orthographic projection onto the surface of the functional conductor 501. This allows the electromagnetic field generated by the NFC antenna radiator 100 to cover the entire hollow area 512, eliminating NFC communication blind spots within the hollow area 512. Furthermore, since only one end of the NFC antenna radiator 100 has its orthographic projection outside the functional conductor 501, this design is well-suited for product designs where the camera module 500 is positioned at the edge of the electronic device 1000 (e.g., the upper left corner of the back of a mobile phone). The other end of the NFC antenna radiator 100 performs NFC communication through the area outside the functional conductor 501, increasing the NFC sensing area and improving NFC communication efficiency.

[0082] like Figure 17 As shown, the orthographic projections of one end of the NFC antenna radiator 100 and the other end of the NFC antenna radiator 100 onto the surface of the functional conductor 501 are both located outside the functional conductor 501. This also allows the electromagnetic field generated by the NFC antenna radiator 100 to cover the entire hollow area 512, eliminating NFC communication blind spots within the hollow area 512. Furthermore, the orthographic projections of both ends of the NFC antenna radiator 100 onto the surface of the functional conductor 501 are located outside the functional conductor 501. This design is well-suited for product designs where the camera module 500 is positioned in the middle of the electronic device 1000 (e.g., the middle area of ​​the back of a mobile phone). The two ends of the NFC antenna radiator 100 communicate via the area outside the functional conductor 501, while the middle portion communicates via the hollow area 512, increasing the NFC sensing area and improving NFC communication efficiency.

[0083] Please refer to Figure 18 and Figure 19The area size of the first sub-hollowed area 5120 is the same as the area size of the second sub-hollowed area 5121. The area size of the first sub-hollowed area 5120 is the same as the area size of the second sub-hollowed area 5121, which can make the magnetic flux of the first electromagnetic field generated by the NFC antenna radiator 100 in the first sub-hollowed area 5120 passing through the functional conductor 501 the same as the magnetic flux of the second electromagnetic field generated by the NFC antenna radiator 100 in the second sub-hollowed area 5121 passing through the functional conductor 501, thereby facilitating the functional conductor 501 to generate the first induced current and the second induced current which are the same size and opposite directions.

[0084] The first induced current generated by the first conductive part 513 has a direction opposite to the direction of the second induced current generated by the second conductive part 514. In the embodiment of the present application, the first conductive part 513 can be understood as the upper half of the functional conductor 501, and the second conductive part 514 can be understood as the lower half of the functional conductor 501. Because the direction of the first induced current generated by the first conductive part 513 in the hollowed area 512 is opposite to the direction of the second induced current generated by the second conductive part 514 in the hollowed area 512, the electromagnetic field interference of the functional conductor 501 to the NFC antenna radiator 100 can be reduced.

[0085] Please refer to Figure 20 and Figure 21 The extension size of the first conductive part 513 is the same as the extension size of the second conductive part 514. For example, in the embodiment shown in Figure 20 , the extension size of the first conductive part 513, i.e. the side length of the upper half of the rectangle of the functional conductor 501, can refer to the sum of L1, L2 and L3 shown in Figure 20 ; the extension size of the second conductive part 514, i.e. the side length of the lower half of the rectangle of the functional conductor 501, can refer to the sum of L4, L5 and L6 shown in Figure 20 . In the embodiment shown in Figure 21 , the extension size of the first conductive part 513, i.e. the arc length of the upper half of the arc of the functional conductor 501, can refer to L7 shown in Figure 21 ; the extension size of the second conductive part 514, i.e. the arc length of the lower half of the arc of the functional conductor 501, can refer to L8 shown in Figure 21 .

[0086] The extension size of the first conductive part 513 is the same as the extension size of the second conductive part 514, which can make the size of the induced current generated by the first conductive part 513 the same as the size of the induced current generated by the second conductive part 514, thereby facilitating the induced current generated by the functional conductor 501 to be completely cancelled out.

[0087] In one possible embodiment, such as Figure 22 As shown, the NFC antenna radiator 100 includes multiple spaced-apart wire segments, which generate NFC currents in the same direction under the excitation of the radio frequency signal source 600. This application does not specifically limit the number of wire segments. For example, the NFC antenna radiator 100 may include two spaced-apart wire segments, three spaced-apart wire segments, four spaced-apart wire segments, five spaced-apart wire segments, etc. Of course, in other embodiments, the NFC antenna radiator 100 may include a single wire segment. The wire segment may be a cylindrical wire segment, a sheet-like wire segment, etc. The widths of the multiple wire segments may be the same or different. The lengths of the multiple wire segments may be the same or different. The material of the wire segments may include copper, aluminum, copper-aluminum alloy, etc.

[0088] In this configuration, the orthographic projections of multiple conductor segments onto the plane of the cutout area 512 are spaced apart along an extension direction perpendicular to the orthographic projection of the NFC antenna radiator 100 onto the plane of the functional conductor 501. The extension direction perpendicular to the orthographic projection of the NFC antenna radiator 100 onto the plane of the functional conductor 501 can be referenced to the Y-axis direction in the accompanying drawings. When the NFC antenna radiator 100 includes multiple conductor segments, and the NFC currents on these segments are in the same direction, the NFC currents generated by all conductor segments under the excitation of the radio frequency signal source 600 can generate first and second electromagnetic fields in opposite directions within the cutout areas 512 on both sides of the extension direction of the NFC antenna radiator 100, causing the functional conductor 501 to generate first and second induced currents in opposite directions.

[0089] By including multiple wire segments spaced apart along a direction perpendicular to the extension of the NFC antenna radiator 100 in the NFC antenna radiator 100, and having these multiple wire segments generate NFC currents in the same direction under the excitation of the radio frequency signal source 600, the electromagnetic fields generated by all the wire segments in the cutout area 512 (i.e., the first sub-cutout area 5120) on one side of the NFC antenna radiator 100 are in the same direction, and the electromagnetic fields generated by all the wire segments in the cutout area 512 (i.e., the first sub-cutout area 5121) on the other side of the NFC antenna radiator 100 are in the same direction. This facilitates the generation of only one type of current on the functional conductor 501 (i.e., the first conductive part 513) of the cutout area 512 near the NFC antenna radiator 100, and only one type of reverse current on the functional conductor 501 (i.e., the first conductive part 514) of the cutout area 512 near the NFC antenna radiator 100. This allows the induced current generated by the functional conductor 501 to be completely or largely canceled out, thus improving the effect of suppressing the generation of annular eddy currents.

[0090] In one possible embodiment, please refer to Figures 23 to 28, the NFC antenna radiator 100 is annular. By making the NFC antenna radiator 100 annular, the area of the NFC antenna radiator 100 can be increased, the electromagnetic field coverage area of the NFC antenna radiator 100 can be improved, and when the NFC antenna radiator 100 includes multiple spaced-apart wire segments 110, the multiple wire segments can be wound to produce NFC currents in the same direction under the excitation of the radio frequency signal source 600.

[0091] In one possible embodiment, referring to Figure 29 and Figure 30 , the NFC antenna radiator 100 includes oppositely arranged first and second radiation portions 101 and 102. The first radiation portion 101 is located in the hollow area 512 in the orthographic projection of the functional conductor 501. The second radiation portion 102 is located outside the functional conductor 501 in the orthographic projection of the functional conductor 501. By making the NFC antenna radiator 100 annular, the first radiation portion 101 is located in the hollow area 512 in the orthographic projection of the functional conductor 501, and the second radiation portion 102 is located outside the functional conductor 501 in the orthographic projection of the functional conductor 501, the communication performance of the NFC antenna radiator 100 in the area outside the functional conductor 501 can be achieved, and when the coil-type NFC antenna radiator 100 is formed in the form of winding, the currents in the multiple conductive segments in the first radiation portion 101 located in the hollow area 512 in the orthographic projection of the functional conductor 501 can be made to flow in the same direction.

[0092] As shown in Figure 31 , the first radiation portion 101 can include one or more first wire segments 110, and the second radiation portion 102 can include one or more second wire segments 120. The one or more first wire segments 110 and the one or more second wire segments 120 are sequentially connected end to end to form the coil-type NFC antenna radiator 100.

[0093] In another possible embodiment, referring to Figure 32 and Figure 33The two ends of the NFC antenna radiator 100 are spaced apart, and the electronic device 1000 further includes an electrical connector 700. The electrical connector 700 is electrically connected between the two ends of the NFC antenna radiator 100, and a normal projection of a surface where the functional conductor 512 is located is located outside the functional conductor 512. The electrical connector 700 can include a conductive wire and / or a conductive frame (metal frame), etc. When the electrical connector 700 includes a conductive wire, the electrical connector 700 can be located inside the electronic device 1000. When the electrical connector 700 includes a conductive frame, the electrical connector 700 can be part of the middle frame 301. In other words, the electronic device 1000 further includes a conductive frame, and at least part of the conductive frame forms the electrical connector 700. The embodiment connects the two ends of the NFC antenna radiator 100 through the electrical connector 700, which is conducive to forming a current loop and enables NFC communication through the electrical connector 700.

[0094] In addition, as shown in Figure 34 The application further provides a communication system 2000. The communication system 2000 includes the NFC device 3000 and the electronic device 1000 described above. The NFC device 3000 and the electronic device 1000 perform wireless communication. The NFC device 3000 can be a bus card reader, a subway card reader, an access control card reader, a mobile phone, a tablet computer, a watch, a bracelet, etc.

[0095] In a possible embodiment, the NFC device 3000 can be a communication receiving end, and the electronic device 1000 can be a communication transmitting end, that is, the NFC antenna radiator 100 of the electronic device 1000 transmits an NFC signal, and the NFC device 3000 receives the NFC signal transmitted by the NFC antenna radiator 100 of the electronic device 1000, thereby realizing a near-field wireless communication function. In another possible embodiment, the NFC device 3000 can be a communication transmitting end, and the electronic device 1000 can be a communication receiving end, that is, the NFC device 3000 transmits an NFC signal, and the NFC antenna radiator 100 of the electronic device 1000 receives the NFC signal transmitted by the NFC device 3000, thereby realizing a near-field wireless communication function. In other possible embodiments, the NFC device 3000 can be a communication receiving end or a communication transmitting end in time division, and the electronic device 1000 can be a communication transmitting end or a communication receiving end in time division, that is, when the NFC device 3000 is a communication receiving end, the electronic device 1000 is a communication transmitting end, and when the NFC device 3000 is a communication transmitting end, the electronic device 1000 is a communication receiving end, that is, the NFC device 3000 and the electronic device 1000 can realize bidirectional communication.

[0096] The communication system 2000 provided by the present application comprises the electronic device 1000 described above, and therefore the performance of wireless communication between the electronic device 1000 and the NFC device 3000 is better, and the user experience is better.

[0097] The features mentioned in the description, the claims and the drawings can be combined with each other, as far as they are not mutually exclusive, within the scope of the present application. The advantages and features described for the electronic device 1000 apply in a corresponding manner to the communication system 2000.

[0098] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary, and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, and these improvements and refinements are also considered as the protection scope of the present application.

Claims

1. An electronic device, comprising: The application relates to an NFC antenna, comprising: a functional conductor in a ring shape, the inner edge of the functional conductor surrounding a hollowed-out area; and an NFC antenna radiator located on one side of the functional conductor and transmitting and receiving NFC signals at least towards the side where the functional conductor is located, at least part of the NFC antenna radiator being located in the projection of the functional conductor on the plane where the functional conductor is located, the projection of the NFC antenna radiator on the plane where the functional conductor is located dividing the functional conductor into a first conductive part and a second conductive part, the first conductive part and the projection of the NFC antenna radiator on the plane where the functional conductor is located forming a first sub-hollowed-out area, and the second conductive part and the projection of the NFC antenna radiator on the plane where the functional conductor is located forming a second sub-hollowed-out area; wherein the NFC antenna radiator is electrically connected to a radio frequency signal source, and under the excitation of the radio frequency signal source, the NFC antenna radiator generates a first electromagnetic field in the first sub-hollowed-out area of the hollowed-out area and a second electromagnetic field in the second sub-hollowed-out area of the hollowed-out area, so that the first conductive part of the functional conductor generates a first induced current and the second conductive part of the functional conductor generates a second induced current, the direction of the first electromagnetic field being opposite to the direction of the second electromagnetic field, and the direction of the first induced current being opposite to the direction of the second induced current.

2. The electronic device of claim 1, wherein, The difference between the magnitude of the first induced current and the magnitude of the second induced current is less than or equal to the magnitude of a preset current.

3. The electronic device of claim 1, wherein, The difference between the magnetic flux of the first electromagnetic field passing through the functional conductor and the magnetic flux of the second electromagnetic field passing through the functional conductor is less than or equal to a preset magnetic flux.

4. The electronic device of claim 1, wherein, The projection of the NFC antenna radiator on the plane where the functional conductor is located extends along a straight line.

5. The electronic device of claim 1, wherein, The projection of the NFC antenna radiator on the plane where the functional conductor is located covers at least part of the center line of the inner edge of the functional conductor.

6. The electronic device according to any one of claims 1 to 5, wherein The projection of one end of the NFC antenna radiator on the plane where the functional conductor is located is located in the hollowed-out area, the projection of the other end of the NFC antenna radiator on the plane where the functional conductor is located is located in the hollowed-out area, or the projection of one end of the NFC antenna radiator on the plane where the functional conductor is located is located in the hollowed-out area, and the projection of the other end of the NFC antenna radiator on the plane where the functional conductor is located overlaps the functional conductor, or the projection of one end of the NFC antenna radiator on the plane where the functional conductor is located is located in the hollowed-out area, and the projection of the other end of the NFC antenna radiator on the plane where the functional conductor is located is located outside the functional conductor.

7. The electronic device according to any one of claims 1 to 5, wherein The projection of one end of the NFC antenna radiator on the plane of the functional conductor overlaps the functional conductor, and the projection of the other end of the NFC antenna radiator on the plane of the functional conductor is outside the functional conductor.

8. The electronic device of claim 7, wherein, The first sub-hollowed area has the same area size as the second sub-hollowed area.

9. The electronic device of claim 7, wherein, The first induced current generates an induced electromagnetic field in the hollowed area, and the direction of the induced electromagnetic field is opposite to the direction of the induced electromagnetic field generated by the second induced current in the hollowed area.

10. The electronic device of claim 9, wherein, The first conductive part has the same extension size as the second conductive part.

11. The electronic device according to any one of claims 1 to 5, wherein The NFC antenna radiator comprises a plurality of spaced-apart wire segments, and the plurality of wire segments generate NFC currents with the same direction under the excitation of the radio frequency signal source.

12. The electronic device according to any one of claims 1 to 5, wherein The NFC antenna radiator has a ring shape.

13. The electronic device of claim 12, wherein, The NFC antenna radiator comprises oppositely arranged first and second radiating parts, and at least part of the first radiating part has a projection on the plane of the functional conductor located in the hollowed area, and the second radiating part has a projection on the plane of the functional conductor located outside the functional conductor.

14. The electronic device according to any one of claims 1 to 5, wherein The two ends of the NFC antenna radiator are spaced apart, and the electronic device further comprises an electrical connector electrically connected between the two ends of the NFC antenna radiator, and the projection of the electrical connector on the plane of the functional conductor is located outside the functional conductor.

15. The electronic device of claim 14, wherein, The NFC antenna radiator is one of an FPC antenna radiator, an LDS antenna radiator, and a PCB antenna radiator, and the electronic device further comprises a conductive frame, and at least part of the conductive frame forms the electrical connector.

16. The electronic device according to any one of claims 1 to 5, wherein The electronic device further comprises a camera module, and the functional conductor is a decorative part of the camera module.

17. A communication system comprising an NFC device and the electronic device according to any one of claims 1 to 16, and the NFC device and the electronic device perform wireless communication.

Images