Near field communication antenna and electronic equipment

Abstract

The utility model provides a near field communication antenna and electronic equipment. The near field communication antenna is applied to the electronic equipment, and the electronic equipment comprises a metal structural member and a communication circuit board. The near-field communication antenna comprises a first communication line and a second communication line, the first communication line uses the metal structural member as a first radiator, and the second communication line uses the near-field line of the communication circuit board as a second radiator. At least one of the first communication line and the second communication line is conducted to form near-field radiation. By controlling the on-off of the first communication line and the second communication line, three near-field antennas which independently use the near-field line, independently use the metal structural member and jointly use the near-field line and the metal structural member as radiators are realized, so that the space occupation of the near-field antennas is reduced, and the communication performance of the near-field antennas is improved.

Description

Technical Field

[0001] This disclosure relates to the field of electronic technology, and in particular to near-field communication antennas and electronic devices. Background Technology

[0002] Near Field Communication (NFC) antennas can transmit electromagnetic signals through near-field coupling and can be applied to near-field communication fields such as mobile payment and identity verification, so they are widely used in electronic devices.

[0003] However, current electronic devices need to achieve multiple functions within limited space, which significantly compresses the space available for NFC antennas. At certain angles, the limited signal coverage leads to poor communication performance of the NFC antenna, and may even result in communication interruptions or complete failure, affecting the usability and convenience of the NFC antenna. Utility Model Content

[0004] This disclosure provides a near-field communication antenna and electronic device to solve related technical problems.

[0005] According to embodiments of this disclosure, a near-field communication antenna is provided for use in an electronic device, the electronic device including a metal structural component and a communication circuit board;

[0006] The near-field communication antenna includes a first communication line and a second communication line; the first communication line uses the metal structural component as a first radiator, and the second communication line uses the near-field line of the communication circuit board as a second radiator; at least one of the first communication line and the second communication line is turned on to form near-field radiation.

[0007] Optionally, the near-field circuit includes a first portion, and the metal structural member includes a second portion; the first portion is close to a first side of the electronic device, and the second portion is close to a second side of the electronic device that is opposite to the first side.

[0008] Optionally, the electronic device includes a frame, and the near-field circuitry includes a first frame connection bit connected to the frame.

[0009] Optionally, the electronic device includes a frame, and the metal structural member includes a second frame connection position connected to the frame.

[0010] Optionally, the electronic device includes a camera module; the metal structural component includes a decorative reinforcing plate for the camera module.

[0011] Optionally, the first communication line includes a first power supply line and a first electronically controlled switch, wherein the first electronically controlled switch can be controlled to connect or disconnect the first power supply line; the second communication line includes a second power supply line and a second electronically controlled switch, wherein the second electronically controlled switch can be controlled to connect or disconnect the second power supply line.

[0012] Optionally, the near-field communication antenna further includes a third feed line and a first switching switch connected to the third feed line;

[0013] The first switching switch is connected to the second communication line in the first conducting state and disconnected from the first communication line;

[0014] In the second conducting state, the first switching switch is connected to the first communication line and disconnected from the second communication line;

[0015] In the third conducting state, the first switching switch is connected to the first communication line and the second communication line respectively.

[0016] Optionally, the near-field communication antenna further includes a connection structure; the metal structural component includes a second connection position, and the near-field line includes a first connection position; the connection structure connects the second connection position and the first connection position in a first usage state, so that the first communication line and the second communication line are connected.

[0017] Optionally, the connection structure includes a second switching switch to switch the first connected bit and the first connected bit between a first usage state in which they are connected to each other and a second usage state in which they are disconnected from each other.

[0018] Optionally, the circuit board includes a main body portion and a bent portion that bends relative to the main body portion and extends toward a metal structural member, wherein the first connecting position is disposed in the bent portion.

[0019] According to a second aspect of this disclosure, an electronic device is provided, the electronic device comprising a metal structural component, a communication circuit board, and any of the near-field communication antennas described in the first aspect.

[0020] The technical solution provided in this disclosure can achieve at least the following beneficial effects:

[0021] This disclosed near-field communication antenna includes a first communication line and a second communication line. The metal structural component of the device serves as the first radiator of the first communication line, and the near-field line serves as the second radiator of the second communication antenna. By controlling the on / off state of the first and second communication lines, three types of near-field antennas can be achieved: using the near-field line alone, using the metal structural component alone, and using both the near-field line and the metal structural component as radiators. This not only reduces the space occupied by the near-field antenna but also helps to improve the communication performance of the near-field antenna.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0024] Figure 1 This is a partial structural schematic diagram of an electronic device according to an exemplary embodiment of the present disclosure;

[0025] Figure 2 This is a partial structural schematic diagram of an electronic device according to another exemplary embodiment of the present disclosure;

[0026] Figure 3 This is a partial structural schematic diagram of an electronic device according to yet another exemplary embodiment of this disclosure;

[0027] Figure 4 This is a partial structural schematic diagram of an electronic device according to another exemplary embodiment of the present disclosure.

[0028] Figure label:

[0029] Electronic device 1;

[0030] Metal structural component 11; Second power supply connection 111; Second frame connection 112; Second part 113; Second communication part 114;

[0031] Circuit board 12; near-field line 121; first power supply connection 1211; first frame connection 1212; first connection point 1213; first part 122;

[0032] 13 for the first side; 14 for the second side; 15 for the border; 16 for the connecting structure. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this specification. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this specification as detailed in the appended claims.

[0034] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used in this specification should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of one. “A plurality” or “several” indicates two or more. Unless otherwise indicated, the terms “front,” “rear,” “lower,” and / or “upper,” and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising,” encompass the elements or objects listed following “comprising,” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0035] The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0036] Near Field Communication (NFC) antennas transmit electromagnetic signals via near-field coupling and are widely used in electronic devices for applications such as mobile payments and identity verification. However, current electronic devices require multifunctionality within limited space, significantly compressing the space available for NFC antennas. At certain angles, limited signal coverage leads to poor communication performance, even resulting in communication interruptions or complete failure, impacting the usability and convenience of NFC antennas.

[0037] This disclosure provides a near-field communication antenna for use in electronic device 1, such as... Figure 1 As shown, the electronic device 1 includes a metal structural component 11 and a communication circuit board 12. The near-field communication antenna includes a first communication line and a second communication line. The first communication line uses the metal structural component 11 as a first radiator, and the second communication line uses the near-field line 121 of the communication circuit board 12 as a second radiator. At least one of the first and second communication lines is activated to form near-field radiation.

[0038] The aforementioned near-field communication antenna includes a first communication line and a second communication line. The metal structure 11 of the device serves as the first radiator of the first communication line, and the near-field line 121 serves as the second radiator of the second communication antenna. By controlling the on / off state of the first and second communication lines, three types of near-field antennas can be achieved: using the near-field line 121 alone, using the metal structure 11 alone, and using both the near-field line 121 and the metal structure 11 as radiators. This not only reduces the space occupied by the near-field antenna but also helps to improve the communication performance of the near-field antenna.

[0039] In some embodiments, the first communication line includes a first feed line and a first electronically controlled switch, the first electronically controlled switch being controllably connected or disconnected from the first feed line. The second communication line includes a second feed line and a second electronically controlled switch, the second electronically controlled switch being controllably connected or disconnected from the second feed line. By controlling the on / off state of the first and second electronically controlled switches, three types of near-field antennas are obtained: one using the near-field line 121 alone, one using the metal structure 11 alone, and one using both the near-field line 121 and the metal structure 11 as radiators, thus improving control convenience.

[0040] In other embodiments, the near-field communication antenna further includes a third feed line and a first switching switch connected to the third feed line. The first switching switch is connected to and disconnected from the second communication line in a first on state. The first switching switch is connected to and disconnected from the second communication line in a second on state. In a third on state, the first switching switch is connected to both the first and second communication lines.

[0041] For example, the near-field line 121 has a first feed connection 1211, and the metal structure 11 has a second feed connection 111. The first switching switch includes a first conducting state, a second conducting state, and a third conducting state. In the first conducting state, the first switching switch is connected to the first feed connection 1211 and disconnected from the second feed connection 111, allowing the near-field line 121 to be used alone as a radiator of the near-field antenna. In the second conducting state, the first switching switch is connected to the second feed connection 111 and disconnected from the first feed connection 1211, allowing the metal structure 11 to be used alone as a radiator of the near-field antenna. In the third conducting state, the first switching switch is connected to both the first feed connection 1211 and the second feed connection 111, allowing the near-field line 121 and the metal structure 11 to be used as radiators of a dual near-field antenna.

[0042] The near-field antenna in the first and second conduction states can be adapted to specific signal radiation scenarios, improving its operational flexibility. The near-field antenna in the third conduction state increases the antenna signal coverage range, which helps to further improve antenna performance.

[0043] It should be noted that the communication circuit board 12 can be a conventional printed circuit board or a flexible communication circuit board 12, and this disclosure does not limit this. The near-field line 121 can be a functional line disposed on the aforementioned communication circuit board 12. The aforementioned metal structural component 11 can be the housing, middle plate, frame 15 of the electronic device 1, or a metal structure belonging to the functional module of the electronic device 1. For example, the metal structural component 11 can be a decorative component or a decorative component reinforcement plate of a camera module.

[0044] In some embodiments, the electronic device 1 includes a camera module, and the metal structural component 11 can be a decorative reinforcement plate for the camera module. The decorative component can be a functional part that enhances the external aesthetics of the camera module. The decorative reinforcement plate is located inside the decorative component to reinforce both the decorative component and the camera module. Using the decorative reinforcement plate as the first radiator of the near-field antenna improves the ease of connection to the third feed line or near-field line 121. The aforementioned decorative reinforcement plate is located inside the electronic device, reducing the impact of wiring connections on the appearance of the electronic device 1 and avoiding the space occupation caused by additional first radiators.

[0045] The decorative reinforcement plate can be a steel sheet disposed on the inner side of the decorative part in the thickness direction. The steel sheet includes multiple branches distributed in the longitudinal and transverse directions, which facilitates flexible connection with the frame 15, the third feed line and the near-field line 121.

[0046] In some embodiments, the near-field line 121 includes a first portion 122, and the metal structure 11 includes a second portion 113. The first portion 122 is close to a first side 13 of the electronic device 1, and the second portion 113 is close to a second side 14 of the electronic device 1 opposite to the first side 13. Positioning the first portion 122 and the second portion 113 close to the two sides of the electronic device 1 can expand the signal coverage range of the near-field antenna on both sides of the electronic device 1, avoiding poor performance of the near-field antenna at certain angles and improving its performance. For example, the opposite sides of the electronic device 1 can refer to the electronic device 1 being positioned opposite each other in the width direction or in the length direction.

[0047] In the above embodiments, the first part 122 may be located in a first section of the communication circuit board 12 extending along the length of the electronic device 1, and the second part 113 may be located in a second section of the metal structure 11 extending along the length of the electronic device 1, so as to simplify the circuit setup.

[0048] In some embodiments, such as Figure 2As shown, the electronic device 1 includes a frame 15, and the near-field line 121 includes a first frame connection bit 1212 connected to the frame 15. The connection between the near-field line 121 and the frame 15 can utilize the frame 15 to increase the length and signal coverage of the near-field antenna, further improving the performance of the near-field antenna.

[0049] It should be noted that in the three cases mentioned above, namely, the first communication line is conducting alone, the second communication line is conducting alone, and the first and second communication lines are conducting together, the near-field line 121 can be connected to or disconnected from the frame 15 to form a near-field antenna that meets the expected requirements.

[0050] In some embodiments, such as Figure 3 As shown, the electronic device 1 includes a frame 15, and the metal structure 11 includes a second frame connection position 112 connected to the frame 15. The connection between the metal structure 11 and the frame 15 can increase the length and signal coverage of the near-field antenna by utilizing the frame 15, thereby further improving the performance of the near-field antenna.

[0051] like Figure 4 As shown, the electronic device 1 includes a frame 15, a near-field line 121 including a first frame connection position 1212 connected to the frame 15, and a metal structure 11 including a second frame connection position 112 connected to the frame 15. The near-field line 121 and the metal structure 11 are respectively connected to the frame 15, which allows the frame 15 to be used to increase the length and signal coverage of the near-field antenna, further improving the performance of the near-field antenna.

[0052] It should be noted that in the three cases of the first communication line being conducted alone, the second communication line being conducted alone, and the first and second communication lines being conducted together, the metal structural component 11 can be connected to or disconnected from the frame 15 to form a near-field antenna that meets the expected requirements.

[0053] The aforementioned metal structural component 11 and near-field circuit 121 can be connected to the frame 15 via connecting springs, control switches, etc. This disclosure does not limit the aforementioned connection method.

[0054] In the above embodiments, the third power supply line can be connected to the first or second communication line through switches, relays, transistors, field-effect transistors, thyristors, analog switches, etc.

[0055] Taking the connection of the third power supply line to the first or second communication line via the first switching switch as an example, in the first conducting state, the first switching switch is connected to the first power supply connection position 1211 and disconnected from the second power supply connection position 111. In the second conducting state, the first switching switch is connected to the second power supply connection position 111 and disconnected from the first power supply connection position 1211. In the third conducting state, the first switching switch is connected to both the first power supply connection position 1211 and the second power supply connection position 111. The first switching switch can be a single-pole double-throw switch, a double-pole double-throw switch, etc., and this disclosure does not limit it to this type.

[0056] In some embodiments, the near-field communication antenna may further include a connection structure 16, where the metal structure 11 includes a second connection position 114 and the near-field line 121 includes a first connection position 1213. The connection structure 16 connects the second connection position 114 and the first connection position 1213 in a first usage state, allowing the metal structure 11 and the near-field line 121 to be used as a single near-field antenna of the required length. When one of the first and second communication antennas is individually activated, the second connection position 114 and the first connection position 1213 are connected, and the metal structure 11 and the near-field line 121 can be used as a single antenna.

[0057] Suitable positions can be selected on the metal structure 11 and the near-field line 121 as connection points. For example, if the second connection point 114 and the first connection point 1213 are connected, and the metal structure 11 and the near-field line 121 are used as a single antenna, the end of the metal structure 11 furthest from the first connection point 1213 can be used as the second feed connection point 111, and the end of the near-field line 121 furthest from the second connection point 114 can be used as the connection point.

[0058] In other embodiments, the connection structure 16 can also disconnect the second connection position 114 and the first connection position 1213 in a second use state, so that the metal structure 11 or the near-field line 121 can be used as an independent near-field antenna.

[0059] In some embodiments, the connection structure 16 may include a second switching switch. This second switching switch may be a single-pole double-throw (SPDT) switch, a double-pole double-throw (DPDT) switch, or similar switches; this disclosure does not limit the scope of the switch.

[0060] In some embodiments, the communication circuit board 12 includes a main body portion and a bent portion that bends relative to the main body portion and extends toward the metal structure 11. A first connection position 1213 is disposed in the bent portion to improve the ease of connection between the near-field line 121 and the metal structure 11.

[0061] This disclosure provides an electronic device. For example... Figures 1-4As shown, the electronic device 1 includes a metal structural component 11, a communication circuit board 12, and the aforementioned near-field communication antenna.

[0062] It should be noted that the aforementioned electronic device 1 may be one of mobile phones, tablets, computers, in-vehicle equipment, medical devices, wearable devices, or robots, and this disclosure does not limit it.

[0063] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure in any way. Although this disclosure has been disclosed above with reference to a preferred embodiment, it is not intended to limit this disclosure. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this disclosure. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this disclosure without departing from the content of the technical solution of this disclosure shall still fall within the scope of the technical solution of this disclosure.

Claims

1. A near-field communication antenna, characterized in that, Applied to electronic devices, the electronic devices including metal structural components and communication circuit boards; The near-field communication antenna includes a first communication line and a second communication line; the first communication line uses the metal structural component as a first radiator, and the second communication line uses the near-field line of the communication circuit board as a second radiator; At least one of the first communication line and the second communication line is turned on to generate near-field radiation.

2. The near-field communication antenna according to claim 1, characterized in that, The near-field circuit includes a first part, and the metal structural component includes a second part; the first part is close to a first side of the electronic device, and the second part is close to a second side of the electronic device that is opposite to the first side.

3. The near-field communication antenna according to claim 1, characterized in that, The electronic device includes a frame, and the near-field circuitry includes a first frame connection bit connected to the frame.

4. The near-field communication antenna according to claim 1, characterized in that, The electronic device includes a frame, and the metal structural component includes a second frame connection position connected to the frame.

5. The near-field communication antenna according to claim 1, characterized in that, The electronic device includes a camera module; the metal structural component includes a decorative reinforcing plate for the camera module.

6. The near-field communication antenna according to claim 1, characterized in that, The first communication line includes a first power supply line and a first electronically controlled switch, the first electronically controlled switch being controllably connected or disconnected from the first power supply line; the second communication line includes a second power supply line and a second electronically controlled switch, the second electronically controlled switch being controllably connected or disconnected from the second power supply line.

7. The near-field communication antenna according to claim 1, characterized in that, It also includes a third feeder line and a first switching switch connected to the third feeder line; The first switching switch is connected to the second communication line in the first conducting state and disconnected from the first communication line; In the second conducting state, the first switching switch is connected to the first communication line and disconnected from the second communication line; In the third conducting state, the first switching switch is connected to the first communication line and the second communication line respectively.

8. The near-field communication antenna according to claim 1, characterized in that, It also includes a connection structure; the metal structural component includes a second connection position, and the near-field line includes a first connection position; the connection structure connects the second connection position and the first connection position in a first use state, so that the first communication line and the second communication line are connected.

9. The near-field communication antenna according to claim 8, characterized in that, The connection structure includes a second switching switch to switch the first connected bit and the first connected bit between a first usage state in which they are connected to each other and a second usage state in which they are disconnected from each other.

10. The near-field communication antenna according to claim 8, characterized in that, The circuit board includes a main body and a bent portion that bends relative to the main body and extends toward a metal structural member, wherein the first connecting position is disposed in the bent portion.

11. An electronic device, characterized in that, It includes metal structural components, communication circuit boards, and near-field communication antennas as described in any one of claims 1-10.

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