WO2023109492A1 - Antenna apparatus, circuit board assembly, and electronic device - Google Patents

Abstract

The present application provides an antenna apparatus, a circuit board assembly, and an electronic device. The antenna apparatus comprises a functional antenna and an NFC antenna. The functional antenna comprises at least one functional chip and at least one functional radiator, the functional chip being electrically connected to the functional radiator, and used to excite the functional radiator to send and receive a target antenna signal. The NFC antenna comprises an NFC chip and an NFC radiator, the NFC chip comprising a first electrode end and a second electrode end. The first electrode end, the functional radiator, the NFC radiator, and the second electrode end are electrically connected in sequence to form a series circuit. The NFC chip is configured to excite the functional radiator and the NFC radiator to send and receive NFC signals. The antenna apparatus, the circuit board assembly, and the electronic device provided in the present application have relatively good NFC performance.

Description

Antenna assembly, circuit board assembly and electronic equipment

This application claims priority to a Chinese patent application with application number 202111538182.4 and titled "antenna device, circuit board assembly, and electronic equipment" filed with the China Patent Office on December 15, 2021, the entire contents of which are hereby incorporated by reference in In this application.

technical field

The present application relates to the technical field of communications, and in particular to an antenna device, a circuit board assembly and electronic equipment.

Background technique

Near Field Communication (NFC) is an emerging technology. Devices using NFC technology can exchange data when they are close to each other to realize mobile payment, electronic ticketing, access control, mobile identification, anti-counterfeiting, etc. Function. However, in related technologies, the NFC performance of the device is poor, which may easily lead to data exchange failure and affect user experience.

Contents of the invention

The present application provides an antenna device, a circuit board assembly and electronic equipment capable of improving NFC performance.

In one aspect, the present application provides an antenna device, including:

A functional antenna, wherein the functional antenna includes a functional chip and at least one functional radiator, the functional chip is electrically connected to the functional radiator, and is used to encourage the functional radiator to send and receive target antenna signals; and

NFC antenna, the NFC antenna includes an NFC chip and an NFC radiator, the NFC chip includes a first electrode terminal and a second electrode terminal, the first electrode terminal, the functional radiator, the NFC radiator and the NFC radiator The second electrode ends are electrically connected in turn to form a series loop, and the NFC chip is used to stimulate the functional radiator and the NFC radiator to send and receive NFC signals.

On the other hand, the present application also provides a circuit board assembly, including at least one circuit board and the antenna device, the functional antenna and the NFC antenna are both arranged on the circuit board.

In yet another aspect, the present application also provides an electronic device, including a casing and the circuit board assembly, and the circuit board assembly is arranged in the casing.

Since the antenna device provided by the application is connected in series with the NFC chip, the functional radiator and the NFC radiator, the NFC chip can not only stimulate the NFC radiator to send and receive NFC signals, but also can stimulate the functional radiator to send and receive NFC signals, so that the functional radiator can be sent and received without affecting the antenna device. The target antenna signal improves the reliability and efficiency of the NFC of the antenna device at the same time, and improves user experience. The circuit board assembly and electronic equipment provided by the present application have better NFC performance because they include the above-mentioned antenna device.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings that are used in the embodiments.

FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application; wherein, the electronic device includes a housing and a circuit board assembly;

Fig. 2 is an exploded schematic diagram of the electronic device shown in Fig. 1;

Fig. 3 is a schematic plan view of the electronic device shown in Fig. 2;

4 is a schematic plan view of a circuit board assembly in the electronic device shown in FIG. 3; wherein the circuit board assembly includes a first circuit board, a second circuit board, and an antenna device;

Fig. 5 is another schematic plan view of the circuit board assembly in the electronic device shown in Fig. 3; wherein, the circuit board assembly includes a main board, a first circuit board, a second circuit board and an antenna device;

6 is a schematic plan view of the antenna device in the circuit board assembly shown in FIG. 5; wherein the antenna device includes a functional antenna and an NFC antenna, the functional antenna includes a functional chip and a functional radiator, and the NFC antenna includes an NFC chip and an NFC radiator;

Fig. 7 is the plan view that the NFC radiator of antenna device shown in Fig. 6 comprises the first NFC radiation part and the second NFC radiation part;

8 is a schematic plan view of the antenna device shown in FIG. 7 further including a first conductive trace, a second conductive trace, and a third conductive trace;

Fig. 9 is a schematic plan view of the antenna device shown in Fig. 8 including a functional chip and two functional radiators;

Fig. 10 is a schematic plan view of the antenna device shown in Fig. 8 including two functional chips and two functional radiators;

Fig. 11 is another schematic plan view of the antenna device shown in Fig. 8 including two functional chips and two functional radiators;

Fig. 12 is a schematic plan view of the antenna device shown in Fig. 8 including three functional chips and three functional radiators;

Fig. 13 is a schematic plan view of the antenna device shown in Fig. 10 further including a first feeder and a second feeder;

Fig. 14 is a schematic plan view of the antenna device shown in Fig. 13 further including a first electrical connection unit;

15 is a schematic plan view of the first electrical connection unit of the antenna device shown in FIG. 14 including at least one inductor;

Fig. 16 is a schematic plan view of a first electrical connection unit of the antenna device shown in Fig. 14 including a first controller and at least one first switch;

Fig. 17 is a schematic plan view of the antenna device shown in Fig. 15 further including a second electrical connection unit;

Fig. 18 is a schematic plan view of the second electrical connection unit of the antenna device shown in Fig. 17 including at least one first capacitor;

Fig. 19 is a schematic plan view of a second electrical connection unit of the antenna device shown in Fig. 17 including a second controller and at least one second switch;

Fig. 20 is a schematic plan view of the antenna device shown in Fig. 18 further including a third electrical connection unit;

Fig. 21 is a schematic plan view of a third electrical connection unit of the antenna device shown in Fig. 20 including at least one second capacitor;

Fig. 22 is a schematic plan view of a third electrical connection unit of the antenna device shown in Fig. 20 including a third controller and at least one third switch;

Fig. 23 is the feeding end of the first functional radiator of the antenna device shown in Fig. 21, the grounding end of the first functional radiator, the electrical connection end of the first functional radiator, the electrical connection end of the second functional radiator, the second functional radiator A schematic plan view of the ground terminal of the second functional radiator and the feeding terminal of the second functional radiator arranged in sequence;

Fig. 24 is a schematic plan view of the antenna device shown in Fig. 23 further including a first matching circuit and a second matching circuit;

FIG. 25 is a schematic plan view of an electronic device corresponding to the antenna device shown in FIG. 24 .

Detailed ways

The present application provides an antenna device, including: a functional antenna, the functional antenna includes at least one functional chip and at least one functional radiator, the functional chip is electrically connected to the functional radiator, and is used to stimulate the functional radiator to send and receive Target antenna signal; and NFC antenna, described NFC antenna comprises NFC chip and NFC radiator, and described NFC chip comprises first electrode terminal and second electrode terminal, described first electrode terminal, described function radiator, described The NFC radiator and the second electrode terminal are electrically connected in turn to form a series loop, and the NFC chip is used to stimulate the functional radiator and the NFC radiator to send and receive NFC signals.

Wherein, the NFC radiator includes a connected first NFC radiator and a second NFC radiator, the first NFC radiator extends along a first direction, and the second NFC radiator extends along a second direction; wherein, The first direction intersects the second direction.

Wherein, the first end of the first NFC radiator faces the functional radiator and is electrically connected to the functional radiator, and the second end of the first NFC radiator is connected to the second NFC radiator. The first ends are connected and electrically connected, and the second end of the second NFC radiation part faces the NFC chip and is electrically connected to the second electrode end.

Wherein, at least one of the functional radiators includes a first functional radiator and a second functional radiator electrically connected, the first electrode terminal, the first functional radiator, the second functional radiator, the The NFC radiator and the second electrode terminal are electrically connected in turn to form a series loop.

Wherein, the feeding terminal of the first functional radiator is electrically connected to the first electrode terminal and the functional chip, and the feeding terminal of the second functional radiator is electrically connected to the functional chip and the NFC radiator .

Wherein, the antenna device further includes a first conductive wire and a second conductive wire, and the first conductive wire is electrically connected between the feeding end of the first functional radiator and the first electrode end , the second conductive wire is electrically connected between the feeding end of the second functional radiator and the NFC radiator.

Wherein, the antenna device further includes a first feeding part and a second feeding part, the first feeding part is arranged at the feeding end of the first functional radiator, and the first feeding part One end is electrically connected to the feeding end of the first functional radiator, and the other end of the first feeding part is electrically connected to the first conductive trace and the functional chip; the second feeding part is arranged on the The feeding end of the second functional radiator, and one end of the second feeding part is electrically connected to the feeding end of the second functional radiator, and the other end of the second feeding part is electrically connected to the first Two conductive traces and the functional chip.

Wherein, the antenna device further includes a first electrical connection unit, the first electrical connection unit is electrically connected between the electrical connection end of the first functional radiator and the electrical connection end of the second functional radiator, The first electrical connection unit is used to make the first functional radiator and the second functional radiator in a conduction state when the NFC chip is in the working mode, and is used to make the functional chip work mode, make the first functional radiator and the second functional radiator in an off state.

Wherein, the antenna device further includes a second electrical connection unit, the second electrical connection unit is electrically connected between the ground terminal of the first functional radiator and the reference ground, and the second electrical connection unit is used for When the NFC chip is in the working mode, the ground terminal of the first functional radiator is disconnected from the reference ground, and is used to make the first functional radiator radiate when the functional chip is in the working mode. The ground terminal of the body and the reference ground are in a conduction state.

Wherein, the antenna device further includes a third electrical connection unit, the third electrical connection unit is electrically connected between the ground terminal of the second functional radiator and the reference ground, and the third electrical connection unit is used for When the NFC chip is in the working mode, the ground terminal of the second functional radiator is disconnected from the reference ground, and when the functional chip is in the working mode, the second The ground end of the functional radiator and the reference ground are in a conduction state.

Wherein, the first electrical connection unit includes at least one inductor, the second electrical connection unit includes at least one first capacitor, and the third electrical connection unit includes at least one second capacitor.

Wherein, the feed terminal of the first functional radiator, the ground terminal of the first functional radiator, the electrical connection terminal of the first functional radiator, the electrical connection terminal of the second functional radiator, the The ground terminal of the second functional radiator and the feed terminal of the second functional radiator are arranged in sequence.

Wherein, the antenna device further includes a first matching circuit and a second matching circuit, the first matching circuit is electrically connected between the feeding end of the first functional radiator and the first electrode end, the The second matching circuit is electrically connected between the feeding end of the second functional radiator and the NFC radiator.

Wherein, the target antenna signal includes one or more of GPS signals, WIFI signals, 2G mobile communication signals, 3G mobile communication signals, 4G mobile communication signals, and 5G mobile communication signals.

The present application also provides a circuit board assembly, including at least one circuit board and the antenna device, and the functional antenna and the NFC antenna are both arranged on the circuit board.

Wherein, at least one circuit board includes a first circuit board and a second circuit board, the functional radiator is arranged on the first circuit board, and the NFC radiator is arranged on the second circuit board.

Wherein, the functional chip and the NFC chip are arranged on the first circuit board.

Wherein, at least one circuit board also includes a main board, and the functional chip and the NFC chip are both arranged on the main board.

The present application also provides an electronic device, which includes a casing and the circuit board assembly, and the circuit board assembly is arranged in the casing.

Wherein, at least one side of the functional radiator faces the top of the casing, and the functional radiator is used for sending and receiving the target antenna signal toward the top of the casing.

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Reference in this application to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are mutually exclusive, independent, or alternative embodiments to other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

The terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, an assembly or device comprising one or more parts is not limited to the one or more listed parts, but may optionally also include one or more parts not listed but inherent to the illustrated product A component, or one or more components it should have based on its stated function.

As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of an electronic device 100 provided in an embodiment of the present application. The electronic device 100 provided in this application may be a mobile phone, a tablet computer, a computer, a watch, a bracelet, glasses, a speaker, a refrigerator, a camera, a customer premise equipment (Customer Premise Equipment, CPE) and the like. The electronic device 100 has an NFC function. The electronic device 100 includes a housing 2 and a circuit board assembly 1 disposed in the housing 2 .

In the embodiment of the present application, the electronic device 100 is taken as an example of a mobile phone. Referring to FIG. 1 and FIG. 2 , the housing 2 includes a middle frame 21 and a backplane 22 . The material of the middle frame 21 may be one of metal, alloy, carbon fiber, plastic, composite material and the like. The material of the back plate 22 may be one of metal, alloy, carbon fiber, plastic, glass, ceramic, and the like. The middle frame 21 and the back plate 22 can be integrally formed or connected to each other as a whole.

Wherein, the electronic device 100 also includes a display screen 3 , a camera module 4 and a battery 5 . The display screen 3 can be a liquid crystal display (Liquid Crystal Display, LCD), a cathode ray tube (Cathode Ray Tube, CRT) display, a light emitting diode (Light Emitting Diode, LED) display, an organic light emitting diode (Organic Light Emitting Diode, One of the LED) display screens, etc. The display screen 3 is opposite to the backboard 22 and connected to the side of the middle frame 21 away from the backboard 22 . A receiving space 23 is formed between the display screen 3 , the middle frame 21 and the back plate 22 . The camera module 4 may include one or more cameras. A camera includes an optical lens and an image sensor. The optical lens may be one of a standard lens, a wide-angle lens, a telephoto lens, a macro lens, and the like. The image sensor may be one of a CCD image sensor, a CMOS image sensor, and the like. The camera module 4 is used to capture images. The battery 5 may be one of a lithium battery 5, a nickel-metal hydride battery 5, a nickel-chromium battery 5, and the like. The battery 5 is used to supply power to the display screen 3 , the camera module 4 and the circuit board assembly 1 . The circuit board assembly 1 , the camera module 4 and the battery 5 are all arranged in the receiving space 23 .

3 and 4, the circuit board assembly 1 includes at least one circuit board and an antenna device 10. The antenna device 10 includes a functional antenna 101 and an NFC antenna 102. Both the functional antenna 101 and the NFC antenna 102 are located on the circuit board.

Wherein, FIG. 4 is a schematic plan view of a circuit board assembly 1 provided in an embodiment of the present application. The circuit board assembly 1 includes a first circuit board 11 , a second circuit board 12 and an antenna device 10 . The antenna device 10 includes a functional antenna 101 and an NFC antenna 102 . The functional antenna 101 includes a functional chip 110 and a functional radiator 112 . The NFC antenna 102 includes an NFC chip 120 and an NFC radiator 121 . The functional chip 110 , the functional radiator 112 , the NFC chip 120 and the NFC radiator 121 are all disposed on the circuit board.

The first circuit board 11 may be one of a single-sided board, a double-sided board, or a multi-layer board. The base material of the first circuit board 11 can be a hard base material or a flexible base material. For example: the first circuit board 11 may be a printed circuit board (Printed Circuit Board, PCB) or a flexible circuit board (Flexible Printed Circuit, FPC). The functional radiator 112 is disposed on the first circuit board 11 . Optionally, the functional radiator 112 can be formed on the first circuit board 11 by one or more of printing, etching, electroplating, coating, laser direct structuring (Laser Direct Structuring, LDS), attachment, etc. superior. The second circuit board 12 may be one of a single-sided board, a double-sided board, or a multi-layer board. The base material of the second circuit board 12 can be a hard base material or a flexible base material. For example: the second circuit board 12 may be a printed circuit board (Printed Circuit Board, PCB) or a flexible circuit board (Flexible Printed Circuit, FPC). The NFC radiator 121 is disposed on the second circuit board 12 . Optionally, the NFC radiator 121 can be formed on the second circuit board 12 by one or more processes of printing, etching, electroplating, coating, laser direct structuring (Laser Direct Structuring, LDS), attachment, etc. superior.

In one embodiment, please refer to FIG. 2 and FIG. 4 , the first circuit board 11 is the main board of the electronic device 100 . The functional chip 110 , the functional radiator 112 , and the NFC chip 120 are arranged on the first circuit board 11 at intervals. Optionally, the functional chip 110 , the functional radiator 112 and the NFC chip 120 are all disposed on a side of the first circuit board 11 facing the backplane 22 . Wherein, the functional radiator 112 is disposed close to the top of the middle frame 21 . The functional radiator 112 can send and receive signals through the sides where the middle frame 21 and/or the backplane 22 are located. If the middle frame 21 and the back plate 22 are conductive materials such as metals and alloys, insulating materials can be filled at the relative positions of the middle frame 21 and the back plate 22 to facilitate signal transmission; if the middle frame 21 and the back plate 22 are made of glass or plastic and other insulating materials, so that the functional radiator 112 can be disposed in close contact with the inner surface of the middle frame 21 and/or the inner surface of the back plate 22 . In this embodiment, the functional radiator 112 is set close to the top of the middle frame 21. In most application scenarios, the functional radiator 112 faces the base station and satellite, and has less occlusion, which can improve the communication between the functional radiator 112 and the base station and satellite. performance. Certainly, in other embodiments, the functional chip 110, the functional radiator 112 and the NFC chip 120 can be arranged on the side of the first circuit board 11 facing the display screen 3, and the functional radiator 112 can send and receive signals through the side where the display screen 3 is located. .

The second circuit board 12 is spaced apart from the first circuit board 11 . Optionally, the second circuit board 12 and the first circuit board 11 may be disposed opposite to each other along the thickness direction of the electronic device 100 . Certainly, in other embodiments, the second circuit board 12 and the first circuit board 11 may also be disposed opposite to each other along the length direction or the width direction of the electronic device 100 . Wherein, the thickness direction of the electronic device 100 may refer to the Z-axis direction in the drawings. The length direction of the electronic device 100 may refer to the X-axis direction in the drawings. The width direction of the electronic device 100 may refer to the Y-axis direction in the drawings, and details will not be described later. In one embodiment, the second circuit board 12 is disposed between the first circuit board 11 and the backplane 22 . For example: the second circuit board 12 is supported on the side of the first circuit board 11 facing the backplane 22 through a bracket, or the second circuit board 12 is attached to the inner surface of the backplane 22 . The NFC radiator 121 is disposed on the second circuit board 12 . The NFC radiator 121 can send and receive signals through the side where the backplane 22 is located. If the backplane 22 is made of metal, alloy and other conductive materials, insulating materials can be filled in the relative positions of the backplane 22 to facilitate signal transmission; if the backplane 22 is made of glass, plastic and other insulating materials, the NFC radiator 121 can be bonded The inner surface of the back plate 22 is provided. Certainly, in other implementation manners, the second circuit board 12 can be arranged between the first circuit board 11 and the display screen 3 , and at this time, the NFC radiator 121 can send and receive signals through the side where the display screen 3 is located.

In another embodiment, please refer to FIG. 2 and FIG. 5 , the circuit board assembly 1 further includes a main board 13 . Both the function chip 110 and the NFC chip 120 are disposed on the motherboard 13 . The first circuit board 11 is disposed between the main board 13 and the back board 22 . In one embodiment, the first circuit board 11 is arranged near the top of the middle frame 21 . The functional radiator 112 is disposed on the first circuit board 11 , and the functional radiator 112 can send and receive signals through the side where the middle frame 21 is located and/or the side where the backplane 22 is located. In this embodiment, the first circuit board 11 is close to the top of the middle frame 21, and the functional radiator 112 is arranged on the first circuit board 11. In most application scenarios, the functional radiator 112 faces the base station and the satellite, and the shielding is less, so The communication performance between the functional radiator 112 and base stations and satellites can be improved.

The second circuit board 12 is spaced apart from the first circuit board 11 . In one embodiment, the second circuit board 12 is disposed between the main board 13 and the backplane 22 . Optionally, the second circuit board 12 and the first circuit board 11 are arranged along the length direction of the electronic device 100 . The NFC radiator 121 is disposed on the second circuit board 12 . The NFC radiator 121 can send and receive signals through the side where the backplane 22 is located. Certainly, in other implementation manners, the second circuit board 12 can be arranged between the main board 13 and the display screen 3 , and at this time, the NFC radiator 121 can send and receive signals through the side where the display screen 3 is located.

By arranging the functional radiator 112 on the first circuit board 11 and the NFC radiator 121 on the second circuit board 12, it is beneficial to accommodate the antenna device 10 as a whole in the accommodation space 23, and to facilitate the antenna device 10 It is applied to an electronic device 100 in which the shell 2 is a non-conductive shell. In other words, the middle frame 21 and the back plate 22 of the electronic device 100 provided in the present application are not limited to be made of conductive materials such as metal, alloy, and carbon fiber, but may also be made of non-conductive materials such as plastic, glass, and ceramics. The application range of the antenna device 10 is wide.

The circuit board assembly 1 and the electronic device 100 provided in the present application have better NFC performance because they include the following antenna device 10 .

As shown in FIG. 6 , FIG. 6 is a schematic plan view of an antenna device 10 provided in an embodiment of the present application. The antenna device 10 includes a functional antenna 101 and an NFC antenna 102 . The functional antenna 101 includes at least one functional chip 110 and at least one functional radiator 112 . The NFC antenna 102 includes an NFC chip 120 and an NFC radiator 121 .

Wherein, the functional chip 110 may include one or more of a GPS antenna chip, a WIFI antenna chip, a 2G mobile communication antenna chip, a 3G mobile communication antenna chip, a 4G mobile communication antenna chip, a 5G mobile communication antenna chip, etc. Various. The number of functional chips 110 may be one, two, or three. The present application does not specifically limit the number of functional chips 110 .

The number of functional radiators 112 may be one, two or three, and so on. The present application does not specifically limit the number of functional radiators 112 . Wherein, the number of functional radiators 112 and the number of functional chips 110 may be the same or different. Optionally, the functional radiators 112 correspond to the functional chips 110 one by one; or, multiple functional radiators 112 may correspond to one functional chip 110; or, one functional radiator 112 may correspond to multiple functional chips 110. The shape of the functional radiator 112 may be one of L-shape, F-shape, V-shape, rectangle, square, circle, strip, other special shapes, and the like. The present application does not specifically limit the shape of the functional radiator 112 . In the drawings of this application, the strip-shaped functional radiator 112 is taken as an example. The functional radiator 112 can be a radiator of a GPS antenna, a radiator of a WIFI antenna, a radiator of a 2G mobile communication antenna, a radiator of a 3G mobile communication antenna, a radiator of a 4G mobile communication antenna, a radiator of a 5G mobile communication antenna, etc. one or more of. The functional radiator 112 corresponds to the functional chip 110. It can be understood that when the functional radiator 112 is a radiator of a GPS antenna, the functional chip 110 is configured as a chip of a GPS antenna. When the functional radiator 112 is a radiator of a WIFI antenna, the functional chip 110 is configured as a chip of a WIFI antenna. When the functional radiator 112 is a radiator of a 2G mobile communication antenna, the functional chip 110 is configured as a chip of a 2G mobile communication antenna. When the functional radiator 112 is a radiator of a 3G mobile communication antenna, the functional chip 110 is configured as a chip of a 3G mobile communication antenna. When the functional radiator 112 is a radiator of a 4G mobile communication antenna, the functional chip 110 is configured as a chip of a 4G mobile communication antenna. When the functional radiator 112 is a radiator of a 5G mobile communication antenna, the functional chip 110 is configured as a chip of a 5G mobile communication antenna.

In one embodiment, there is one functional radiator 112 . The functional radiator 112 integrates the radiator of the GPS L1 antenna and the radiator of the WIFI 5G antenna; or, the functional radiator 112 integrates the radiator of the mid-high frequency band (1710MHZ～2690MHZ) antenna and the radiator of the N78 frequency band (3300MHZ～3800MHZ) antenna. Radiator; or, the functional radiator 112 is the radiator of the GPS L1 antenna, the radiator of the GPS L5 antenna, the radiator of the WIFI 2.4G antenna, the radiator of the WIFI 5G antenna, and the radiation of the low frequency band (617MHZ～960MHZ) antenna One of the radiators, the radiators of the medium and high frequency band antennas, and the radiators of the N78 frequency band antennas. It can be understood that the functional radiator 112 can send and receive corresponding target antenna signals under the excitation of the functional chip 110 . For example: when the functional radiator 112 is the radiator of the GPS L1 antenna, the functional radiator 112 can send and receive antenna signals in the 1575.42MHz±1.023MHz frequency band under the excitation of the functional chip 110. When the functional radiator 112 integrates the radiator of the mid-high frequency band (1710MHZ～2690MHZ) antenna and the radiator of the N78 frequency band (3300MHZ～3800MHZ) antenna, the functional radiator 112 can transmit and receive the 1710MHZ～2690MHZ frequency band under the excitation of the functional chip 110 The antenna signal and the antenna signal of the 3300MHZ ~ 3800MHZ frequency band.

In another embodiment, there are multiple functional radiators 112 . For example, the number of functional radiators 112 is two, three or more. Multiple functional radiators 112 include the radiator of GPS L1 antenna, the radiator of GPS L5 antenna, the radiator of WIFI2.4G antenna, the radiator of WIFI 5G antenna, the radiator of mid-high frequency band antenna and the radiator of N78 frequency band antenna , radiators of low-frequency band antennas, etc.

The functional chip 110 is electrically connected to the functional radiator 112 and is used for sending and receiving target antenna signals under the excitation of the functional chip 110 . In this application, unless otherwise specified, "electrical connection" may include one or more of direct electrical connection, indirect electrical connection, and coupling, and "electrical connection" may be direct electrical connection or indirect electrical connection. repeat. It can be understood that the functional chip 110 can stimulate the functional radiator 112 to generate radio frequency current, so that the functional radiator 112 can send and receive target antenna signals. The target antenna signal is an electromagnetic wave signal, which may be one or more of GPS signals, WIFI signals, 2G mobile communication signals, 3G mobile communication signals, 4G mobile communication signals, and 5G mobile communication signals.

The NFC antenna 102 is spaced apart from the functional antenna 101 . In the embodiment of the present application, that is, the functional chip 110 , the functional radiator 112 , the NFC chip 120 and the NFC radiator 121 are arranged at intervals. The shape of the NFC radiator 121 may be one of L-shape, F-shape, V-shape, rectangle, square, circle, and other irregular shapes. The present application does not specifically limit the shape of the NFC radiator 121 . In the drawings of this application, the L-shaped functional radiator 112 is taken as an example.

In one embodiment, as shown in FIG. 7 , the NFC radiator 121 includes a connected first NFC radiator 121 a and a second NFC radiator 121 b. The first NFC radiation part 121a extends along the first direction. The second NFC radiation part 121b extends along the second direction. The first direction intersects the second direction. The included angle between the first direction and the second direction may be one of any angles such as 15°, 20°, 36°, 50°, 80°, and 90°. In the embodiment of the present application, it is taken as an example that the first direction is perpendicular to the second direction. Optionally, the first direction may be the length direction of the antenna device 10, and the second direction may be the width direction of the antenna device 10; or, the first direction may be the width direction of the antenna device 10, and the second direction may be the width direction of the antenna device 10. the length direction. Wherein, the length direction of the antenna device 10 can refer to the X-axis direction in the drawings. The width direction of the antenna device 10 can refer to the Y-axis direction in the drawings. The length, width, and thickness directions of the antenna device 10 correspond to the length, width, and thickness directions of the electronic device 100 (see FIG. 2 ), respectively. The first NFC radiator 121 a and the second NFC radiator 121 b form an L-shaped NFC radiator 121 . The NFC radiator 121 in this embodiment has a simple structure and is easy to process.

The NFC chip 120 includes a first electrode terminal and a second electrode terminal. The first electrode terminal may be a positive terminal, and the second electrode terminal may be a negative terminal; or, the first electrode terminal may be a negative terminal, and the second electrode terminal may be a positive terminal. The first electrode terminal, the functional radiator 112 , the NFC radiator 121 and the second electrode terminal are electrically connected in sequence to form a series loop.

Wherein, the first electrode terminal of the NFC chip 120 and the functional radiator 112 may be electrically connected through one or more ways of conductive traces, power feeders, matching circuits, and the like. The functional radiator 112 and the NFC radiator 121 may be electrically connected by one or more ways of conductive traces, power feeders, matching circuits, and the like. The NFC radiator 121 and the second electrode terminal of the NFC chip 120 may be electrically connected by one or more ways of conductive traces, power feeders, matching circuits, and the like.

Optionally, as shown in FIG. 7 , the first NFC radiation part 121 a extends along the length direction of the antenna device 10 , and the second NFC radiation part 121 b extends along the width direction of the antenna device 10 . Wherein, the first end 1210 of the first NFC radiation part 121 a faces the functional radiator 112 and is electrically connected to the functional radiator 112 . The second end 1211 of the first NFC radiation part 121a is connected and electrically connected to the first end 1212 of the second NFC radiation part 121b. The second end 1213 of the second NFC radiation part 121 b faces the NFC chip 120 and is electrically connected to the second electrode end of the NFC chip 120 . In this embodiment, the layout of the NFC radiator 121, the functional radiator 112 and the NFC chip 120 can make the first end 1210 of the first NFC radiator 121a and the functional radiator 112 close to each other, thereby facilitating the first NFC radiator 121a and The functional radiator 112 is directly electrically connected, or the length of the electrical connection line between the first NFC radiator 121 a and the functional radiator 112 is reduced. In addition, the second end 1213 of the second NFC radiation part 121b and the NFC chip 120 can also be made close to each other, so as to facilitate the direct electrical connection between the second NFC radiation part 121b and the NFC chip 120, or reduce the second end 1213 of the second NFC radiation part 121b. The electrical connection trace length between the terminal 1213 and the NFC chip 120 . In other words, the present application can shorten the serial wiring among the NFC chip 120 , the functional radiator 112 , and the NFC radiator 121 , improve the structural compactness of the antenna device 10 , and reduce the space occupied by the antenna device 10 .

Wherein, the first NFC radiation part 121a and the second NFC radiation part 121b can be integrally formed or connected as a whole by welding or the like. In other words, the second end 1211 of the first NFC radiation part 121a is integrally formed or fixedly connected to the first end 1212 of the second NFC radiation part 121b.

In one embodiment, as shown in FIG. 8 , the antenna device 10 further includes a first conductive trace 130 , a second conductive trace 131 and a third conductive trace 132 . The first conductive wire 130, the second conductive wire 131 and the third conductive wire 132 can be arranged on the motherboard 13 (refer to FIG. 5 ); or, the first conductive wire 130, the second conductive wire 131 and the third The conductive traces 132 can be arranged on the first circuit board 11 (refer to FIG. 4 ); or, the first conductive traces 130, the second conductive traces 131 and the third conductive traces 132 can be arranged on the third circuit board , wherein the third circuit board is connected between the first circuit board 11 and the second circuit board 12 . One end of the first conductive wire 130 is electrically connected to the first electrode end of the NFC chip 120 , and the other end of the first conductive wire 130 is electrically connected to the functional radiator 112 . One end of the second conductive trace 131 is electrically connected to the functional radiator 112 , and the other end of the second conductive trace 131 is electrically connected to the NFC radiator 121 . One end of the third conductive wire 132 is electrically connected to the NFC radiator 121 , and the other end of the third conductive wire 132 is electrically connected to the second electrode terminal of the NFC chip 120 . Wherein, the electrical connection between the first conductive wire 130 and the first electrode end of the NFC chip 120 may be one of direct electrical connection and indirect electrical connection. The electrical connection between the first conductive trace 130 and the functional radiator 112 may be one of direct electrical connection and indirect electrical connection. The electrical connection manner between the second conductive trace 131 and the functional radiator 112 may be one of direct electrical connection and indirect electrical connection. The electrical connection manner between the second conductive wire 131 and the NFC radiator 121 may be one of direct electrical connection and indirect electrical connection. The electrical connection manner between the third conductive wire 132 and the NFC radiator 121 may be one of direct electrical connection and indirect electrical connection. The electrical connection between the third conductive trace 132 and the second electrode terminal of the NFC chip 120 may be one of direct electrical connection and indirect electrical connection.

The NFC chip 120 is used to stimulate the functional radiator 112 and the NFC radiator 121 to send and receive NFC signals. It can be understood that the NFC chip 120 can stimulate the functional radiator 112 and the NFC radiator 121 to generate current, so that the functional radiator 112 and the NFC radiator 121 can send and receive NFC signals. It can be understood that both the functional radiator 112 and the NFC radiator 121 in the antenna device 10 provided by the present application can transmit and receive NFC signals under the excitation of the NFC chip 120, which can enhance the NFC function of the antenna device 10 and improve user experience. In addition, the functional radiator 112 can also send and receive the target antenna signal under the excitation of the functional chip 110, that is, the functional antenna 101 and the NFC antenna 102 share the functional radiator 112, which can reduce the number of antenna devices 10 while enhancing the NFC function of the antenna device 10. The number of radiators is beneficial to the layout of the antenna device 10 inside the electronic device 100 and the thinning and miniaturization of the electronic device 100 .

In the antenna device 10 provided by the present application, since the NFC chip 120, the functional radiator 112 and the NFC radiator 121 are connected in series, the NFC chip 120 can not only stimulate the NFC radiator 121 to send and receive NFC signals, but also can stimulate the functional radiator 112 to send and receive NFC signals, thereby The reliability and efficiency of the NFC of the antenna device 10 are improved without affecting the function radiator 112 to send and receive the target antenna signal, and the user experience is improved.

In one embodiment, as shown in FIG. 9 , at least one functional radiator 112 includes a first functional radiator 1120 and a second functional radiator 1121 electrically connected. In one embodiment, as shown in FIG. 9 , the number of functional chips 110 is one. The functional chip 110 is electrically connected to the first functional radiator 1120, and is used to stimulate the first functional radiator 1120 to send and receive target antenna signals, and the functional chip 110 is also electrically connected to the second functional radiator 1121, and is used to stimulate the second functional radiator 1121 to send and receive target antenna signal. In another embodiment, please refer to FIG. 10 and FIG. 11 , there are multiple functional chips 110 . One or more functional chips 110 are electrically connected to the first functional radiator 1120, and are used to stimulate the first functional radiator 1120 to send and receive target antenna signals, and another or more functional chips 110 are electrically connected to the second functional radiator 1121, and are used to stimulate The second functional radiator 1121 sends and receives target antenna signals. This application does not limit the positions of the first functional radiator 1120 and the second functional radiator 1121, and the number of other radiators between the first functional radiator 1120 and the second functional radiator 1121. Figures 10 and 11 are only examples The schematic diagram of the antenna device 10 provided in the application should not be construed as limiting the protection scope of the application.

The first functional radiator 1120 can be a radiator of a GPS antenna, a radiator of a WIFI antenna, a radiator of a 2G mobile communication antenna, a radiator of a 3G mobile communication antenna, a radiator of a 4G mobile communication antenna, or a radiator of a 5G mobile communication antenna. One or more of the body and so on. The second functional radiator 1121 can be a radiator of a GPS antenna, a radiator of a WIFI antenna, a radiator of a 2G mobile communication antenna, a radiator of a 3G mobile communication antenna, a radiator of a 4G mobile communication antenna, or a radiator of a 5G mobile communication antenna. One or more of the body and so on. When the first functional radiator 1120 is used to send and receive target antenna signals, the working frequency of the first functional radiator 1120 may include 617MHZ～960MHZ, 1710MHZ～2690MHZ, 3300MHZ～3800MHZ, WIFI 5G, WIFI 2.4G, GPS L1, GPS L5 one or more of these. When the first functional radiator 1120 is used to send and receive NFC signals, the working frequency of the first functional radiator 1120 may include 12MHz˜15MHz. When the second functional radiator 1121 is used to send and receive target antenna signals, the working frequency of the second functional radiator 1121 can include 617MHZ～960MHZ, 1710MHZ～2690MHZ, 3300MHZ～3800MHZ, WIFI 5G, WIFI 2.4G, GPS L1, GPS L5 one or more of these. When the second functional radiator 1121 is used to send and receive NFC signals, the working frequency of the second functional radiator 1121 may include 12MHz˜15MHz. It can be understood that the operating frequency of the first functional radiator 1120 when receiving and receiving NFC signals is lower than the operating frequency of the first functional radiator 1120 when receiving and receiving target antenna signals. The working frequency of the second functional radiator 1121 when transmitting and receiving NFC signals is lower than the working frequency of the second functional radiator 1121 when transmitting and receiving target antenna signals.

In one embodiment, the first functional radiator 1120 integrates the radiator of the GPS L1 antenna and the radiator of the N78 frequency band antenna. The second functional radiator 1121 integrates the radiator of the WIFI 5G antenna and the radiator of the mid-high frequency band antenna. It can be understood that at least one functional chip 110 can excite the first functional radiator 1120 so that the first functional radiator 1120 generates a corresponding first radio frequency current to send and receive GPS L1 and N78 frequency band antenna signals. At least one functional chip 110 can stimulate the second functional radiator 1121, so that the second functional radiator 1121 generates a corresponding second radio frequency current to send and receive WIFI 5G and mid-high frequency antenna signals.

The first electrode terminal of the NFC chip 120 , the first functional radiator 1120 , the second functional radiator 1121 , the NFC radiator 121 and the second electrode terminal of the NFC chip 120 are electrically connected in sequence to form a series loop. It can be understood that both the first functional radiator 1120 and the second functional radiator 1121 are electrically connected to the NFC chip 120, that is, both the first functional radiator 1120 and the second functional radiator 1121 can send and receive NFC chips under the stimulation of the NFC chip 120. Signal. In this embodiment, by arranging a plurality of functional radiators 112, the plurality of functional radiators 112 are connected in series with the NFC radiator 121 and the NFC chip 120, which can further increase the induction strength of the antenna device 10 and improve the NFC performance of the antenna device 10 . In addition, since the functional radiator 112 and the NFC radiator 121 are arranged at intervals, the NFC function can be used at different positions, so that the user can use the NFC function in different holding states, for example: the side and the center of the back panel 22 of the electronic device 100 All sides where the frame 21 is located can implement the NFC function, or different areas on the side where the backplane 22 is located can all implement the NFC function.

In another embodiment, as shown in FIG. 12 , at least one functional radiator 112 includes a first functional radiator 1120 , a second functional radiator 1121 and a third functional radiator 1122 electrically connected. The first functional radiator 1120 , the second functional radiator 1121 and the third functional radiator 1122 may be electrically connected to the same functional chip 110 , or may be electrically connected to different functional chips 110 respectively.

Wherein, the third functional radiator 1122 may be a radiator of a GPS antenna, a radiator of a WIFI antenna, a radiator of a 2G mobile communication antenna, a radiator of a 3G mobile communication antenna, a radiator of a 4G mobile communication antenna, or a radiator of a 5G mobile communication antenna. One or more of the radiators, etc.

In one embodiment, the third functional radiator 1122 is a radiator of a WIFI 5G antenna. The first functional radiator 1120 integrates the radiator of the GPS L1 antenna and the radiator of the N78 frequency band antenna. The second functional radiator 1121 integrates the radiator of the low frequency band and the radiator of the mid-high frequency band antenna. It can be understood that at least one functional chip 110 can excite the first functional radiator 1120 so that the first functional radiator 1120 generates a corresponding first radio frequency current to send and receive GPS L1 and N78 frequency band antenna signals. At least one functional chip 110 can excite the second functional radiator 1121 so that the second functional radiator 1121 generates a corresponding second radio frequency current to send and receive antenna signals of low frequency band and mid-high frequency band. At least one functional chip 110 can stimulate the third functional radiator 1122, so that the third functional radiator 1122 generates a corresponding third radio frequency current to send and receive WIFI 5G antenna signals.

The first electrode terminal of the NFC chip 120, the third functional radiator 1122, the first functional radiator 1120, the second functional radiator 1121, the NFC radiator 121 and the second electrode terminal of the NFC chip 120 are electrically connected in turn and form a series loop . It can be understood that the first functional radiator 1120, the second functional radiator 1121, and the third functional radiator 1122 are all electrically connected to the NFC chip 120, that is, the first functional radiator 1120, the second functional radiator 1121, the third functional radiator The radiators 1122 are capable of sending and receiving NFC signals under the excitation of the NFC chip 120 . In this embodiment, by arranging more functional radiators 112, multiple functional radiators 112 are connected in series with NFC radiators 121 and NFC chips 120, which can further increase the induction strength of the antenna device 10 and improve the NFC performance of the antenna device 10. performance. Of course, in other embodiments, the plurality of functional radiators 112 may also include a fourth functional radiator, a fifth functional radiator, and the like.

In the following embodiments, it is taken that at least one functional radiator 112 includes an electrically connected first functional radiator 1120 and a second functional radiator 1121 as an example. It can be understood that the first functional radiator 1120 described in the following embodiments . The structural features and electrical connections of the second functional radiator 1121 are applicable to other third functional radiators 1122 , fourth functional radiators, fifth functional radiators, and the like.

Wherein, as shown in FIG. 13 , the feed end 112 a of the first functional radiator 1120 is electrically connected to the first electrode end of the NFC chip 120 and the functional chip 110 . The feed end 112 b of the second functional radiator 1121 is electrically connected to the functional chip 110 and the NFC radiator 121 .

In an embodiment, the functional antenna 101 further includes a first feeding element 113 and a second feeding element 114 . The first feeding member 113 may be a microstrip line, a feeding shrapnel, a metal spring pin, and the like. One end of the first feeding part 113 is electrically connected to the feeding end 112a of the first functional radiator 1120, and the other end of the first feeding part 113 is electrically connected to the first electrode end of the NFC chip 120 through the first conductive wire 130. The other end of a feeder 113 is also electrically connected to the functional chip 110, which may be a direct electrical connection, an indirect electrical connection or a coupling. The second feeding element 114 may be a microstrip line, a feeding shrapnel, a metal spring pin, or the like. One end of the second feeding part 114 is electrically connected to the feeding end 112b of the second functional radiator 1121, and the other end of the second feeding part 114 is electrically connected to the NFC radiator 121 through the second conductive wire 131. The second feeding part The other end of 114 is also electrically connected to the functional chip 110, which may be a direct electrical connection, an indirect electrical connection or a coupling.

Optionally, as shown in FIG. 14 , the antenna device 10 further includes a first electrical connection unit 105 . The first electrical connection unit 105 may include an inductor 151 and/or a control switch. The first electrical connection unit 105 is electrically connected between the electrical connection end 112c of the first functional radiator 1120 and the electrical connection end 112d of the second functional radiator 1121 . The first electrical connection unit 105 is used to make the first functional radiator 1120 and the second functional radiator 1121 in a conducting state when the NFC chip 120 is in the working mode, and is used to make the second functional radiator 1120 be in the working mode when the functional chip 110 is in the working mode. The first functional radiator 1120 and the second functional radiator 1121 are in an off state. In other words, the first electrical connection unit 105 is used for stimulating the NFC current generated by the NFC chip 120 and for blocking the radio frequency current generated by the functional chip 110 .

The electrical connection end 112c of the first functional radiator 1120 and the electrical connection end 112d of the second functional radiator 1121 are electrically connected through the first electrical connection unit 105, so that the first functional radiator 1120 and the second functional radiator 1121 are in conduction. When the NFC chip 120 is in the working mode, the first functional radiator 1120 and the second functional radiator 1121 can be switched on, and the NFC current passes through to realize the corresponding NFC function. In addition, when the functional chip 110 is in the working mode, that is, when the first functional radiator 1120 and the second functional radiator 1121 are used to send and receive target antenna signals, the first functional radiator 1120 and the second functional radiator 1121 are disconnected. state, blocking the radio frequency current generated by the excitation of the functional chip 110 from communicating between the first functional radiator 1120 and the second functional radiator 1121, the first functional radiator 1120 and the second functional radiator 1121 can be isolated to reduce the Coupling interference between the first functional radiator 1120 and the second functional radiator 1121 .

In one embodiment, please refer to FIG. 14 and FIG. 15 , the first electrical connection unit 105 includes at least one inductor 151 . The electrical connection end 112c of the first functional radiator 1120 and the electrical connection end 112d of the second functional radiator 1121 are electrically connected through the inductor 151, so that the first functional radiator 1120 and the second functional radiator 1121 can be conducted. and disconnect toggle. At the same time, the design of the controller and the control program for controlling the on and off of the first functional radiator 1120 and the second functional radiator 1121 can be reduced, thereby simplifying the structure of the antenna device 10 at both hardware and software levels.

In another embodiment, please refer to FIG. 14 and FIG. 16 , the first electrical connection unit 105 includes a first controller 152 and at least one first switch 153 . One end of the first controller 152 is electrically connected to the first switch 153 , and the other end of the first controller 152 is electrically connected to the function chip 110 and the NFC chip 120 . The first switch 153 is electrically connected between the first functional radiator 1120 and the second functional radiator 1121 . The first controller 152 is used to determine whether the function chip 110 and the NFC chip 120 are in the working mode, and when the NFC chip 120 is in the working mode, control the first switch 153 to open, so that the first function radiator 1120 and the second function radiation The body 1121 is in the on state; when the functional chip 110 is in the working mode, the first switch 153 is controlled to be turned off, so that the first functional radiator 1120 and the second functional radiator 1121 are in the off state. In this embodiment, the first functional radiator 1120 and the second functional radiator 1121 can be turned on and off through corresponding control program design, which is beneficial to further switch the first functional radiator 1120 and the second functional radiator 1121 according to the user's operation and the actual use scene of the electronic device 100. State of the functional radiator 1120 and the second functional radiator 1121.

Further, as shown in FIG. 17 , the antenna device 10 further includes a second electrical connection unit 106 . The second electrical connection unit 106 is electrically connected between the ground terminal 112e of the first functional radiator 1120 and the reference ground. The second electrical connection unit 106 is used to disconnect the ground terminal 112e of the first functional radiator 1120 from the reference ground when the NFC chip 120 is in the working mode, and to make the second functional chip 110 in the working mode. The ground terminal 112e of a functional radiator 1120 is in conduction state with the reference ground. The second electrical connection unit 106 may include a capacitor and/or control a switch. In other words, the second electrical connection unit 106 is used to block the NFC current generated by the excitation of the NFC chip 120 , and is used to pass the radio frequency current generated by the excitation of the functional chip 110 .

The second electrical connection unit 106 is electrically connected between the ground terminal 112e of the first functional radiator 1120 and the reference ground, so that the ground terminal 112e of the first functional radiator 1120 and the reference ground can be switched on and off. Switching can disconnect the ground terminal 112e of the first functional radiator 1120 from the reference ground when the NFC chip 120 is in the working mode, so as to prevent the current on the first functional radiator 1120 from passing through the ground terminal of the first functional radiator 1120 112e is transmitted to the reference ground, but fails to be connected in series with the NFC chip 120, which affects the performance of the first functional radiator 1120 for sending and receiving NFC signals. In addition, when the functional chip 110 is in the working mode, that is, when the first functional radiator 1120 is used to send and receive the target antenna signal, the ground terminal 112e of the first functional radiator 1120 is connected to the reference ground, which can reduce the number of the first functional radiator. The electrostatic interference at 1120 ensures the performance of the first functional radiator 1120 to send and receive signals from the target antenna.

In one embodiment, please refer to FIG. 17 and FIG. 18 , the second electrical connection unit 106 includes at least one first capacitor 161 . The first capacitor 161 is electrically connected to the ground terminal 112e of the first functional radiator 1120 and the reference ground, so that the ground terminal 112e of the first functional radiator 1120 and the reference ground can be switched on and off. At the same time, the design of the controller and the control program for controlling the connection and disconnection between the ground terminal 112e of the first functional radiator 1120 and the reference ground can be reduced, thereby simplifying the structure of the antenna device 10 at both hardware and software levels.

In another embodiment, please refer to FIG. 17 and FIG. 19 , the second electrical connection unit 106 includes a second controller 162 and at least one second switch 163 . One end of the second controller 162 is electrically connected to the second switch 163 , and the other end of the second controller 162 is electrically connected to the function chip 110 and the NFC chip 120 . The second switch 163 is electrically connected between the first functional radiator 1120 and the second functional radiator 1121. The second controller 162 is used to determine whether the functional chip 110 and the NFC chip 120 are in the working mode, and when the NFC chip 120 is in the working mode, control the second switch 163 to close, so that the ground terminal 112e of the first functional radiator 1120 and the The reference ground is disconnected; when the functional chip 110 is in the working mode, the second switch 163 is controlled to be turned on, so that the ground terminal 112e of the first functional radiator 1120 and the reference ground are in a conductive state. In this embodiment, the connection and disconnection between the ground terminal 112e of the first functional radiator 1120 and the reference ground can be realized through the corresponding control program design, which is beneficial to further according to the user's operation and the actual use scene of the electronic device 100 The state between the ground terminal 112e of the first functional radiator 1120 and the reference ground is switched.

Further, as shown in FIG. 20 , the antenna device 10 further includes a third electrical connection unit 107 . The third electrical connection unit 107 is electrically connected between the ground terminal 112f of the second functional radiator 1121 and the reference ground, and the third electrical connection unit 107 is used to make the second functional radiator 1121 The ground terminal 112f and the reference ground are in a disconnected state, and are used to make the ground terminal 112f of the second functional radiator 1121 and the reference ground in a conductive state when the functional chip 110 is in the working mode. In other words, the third electrical connection unit 107 is used to block the NFC current generated by the excitation of the NFC chip 120 , and is used to pass the radio frequency current generated by the excitation of the functional chip 110 .

The ground terminal 112f of the second functional radiator 1121 is electrically connected to the reference ground through the third electrical connection unit 107, so that the ground terminal 112f of the second functional radiator 1121 and the reference ground are switched between conduction and disconnection, When the NFC chip 120 is in the working mode, the ground terminal 112f of the second functional radiator 1121 can be disconnected from the reference ground, so as to prevent the current on the second functional radiator 1121 from being transmitted through the ground terminal 112f of the second functional radiator 1121 To the reference ground, but not connected in series with the NFC chip 120 , it affects the performance of the second functional radiator 1121 to send and receive NFC signals. In addition, when the functional chip 110 is in the working mode, that is, when the second functional radiator 1121 is used to send and receive target antenna signals, the ground terminal 112f of the second functional radiator 1121 is connected to the reference ground, which can reduce the number of second functional radiators. The electrostatic interference at 1121 ensures the performance of the second functional radiator 1121 to send and receive signals from the target antenna.

In one embodiment, please refer to FIG. 20 and FIG. 21 , the third electrical connection unit 107 includes at least one second capacitor. The ground terminal 112f of the second functional radiator 1121 and the reference ground are electrically connected through the second capacitor, so that the ground terminal 112f of the second functional radiator 1121 and the reference ground can be switched on and off. At the same time, the design of the controller and control program for controlling the connection and disconnection between the ground terminal 112f of the second functional radiator 1121 and the reference ground can be reduced, thereby simplifying the structure of the antenna device 10 at both hardware and software levels.

In another embodiment, please refer to FIG. 20 and FIG. 22 , the third electrical connection unit 107 includes a third controller 172 and at least one third switch 173 . One end of the third controller 172 is electrically connected to the third switch 173 , and the other end of the third controller 172 is electrically connected to the function chip 110 and the NFC chip 120 . The third switch 173 is electrically connected between the first functional radiator 1120 and the second functional radiator 1121 . The third controller 172 is used to determine whether the functional chip 110 and the NFC chip 120 are in the working mode, and when the NFC chip 120 is in the working mode, control the third switch 173 to close, so that the ground terminal 112e and the ground terminal 112e of the first functional radiator 1120 and The reference ground is in a disconnected state; when the functional chip 110 is in the working mode, the third switch 173 is controlled to be turned on, so that the first functional radiator 1120 and the second functional radiator 1121 are in a conductive state. In this embodiment, the conduction and disconnection between the ground terminal 112f of the second functional radiator 1121 and the reference ground can be realized through the design of the corresponding control program, which is beneficial to further optimize the operation according to the user's operation and the actual use scene of the electronic device 100. The state between the ground terminal 112f of the second functional radiator 1121 and the reference ground is switched.

Wherein, as shown in FIG. 23 , the feeding terminal 112a of the first functional radiator 1120, the ground terminal 112e of the first functional radiator 1120, the electrical connection terminal 112c of the first functional radiator 1120, and the The electrical connection terminal 112d, the ground terminal 112f of the second functional radiator 1121, and the feeding terminal 112b of the second functional radiator 1121 are arranged in sequence. In the embodiment of the present application, the power supply terminal 112a of the first functional radiator 1120, the ground terminal 112e of the first functional radiator 1120, the electrical connection terminal 112c of the first functional radiator 1120, and the electrical connection of the second functional radiator 1121 The terminal 112d , the ground terminal 112f of the second functional radiator 1121 , and the feeding terminal 112b of the second functional radiator 1121 are arranged in sequence along the extending direction of the top edge of the backplane 22 (refer to FIG. 2 ). Of course, in other embodiments, the ground terminal 112e of the first functional radiator 1120 and the electrical connection terminal 112c of the first functional radiator 1120 may exchange positions. The electrical connection terminal 112d of the second functional radiator 1121 and the ground terminal 112f of the second functional radiator 1121 can exchange positions.

By making the feed terminal 112a of the first functional radiator 1120, the ground terminal 112e of the first functional radiator 1120, the electrical connection terminal 112c of the first functional radiator 1120, the electrical connection terminal 112d of the second functional radiator 1121, the second The ground terminal 112f of the second functional radiator 1121 and the feed terminal 112b of the second functional radiator 1121 are arranged in sequence, which can facilitate the feeding terminal 112a of the first functional radiator 1120 to be set close to the NFC chip 120, and the second functional radiator The feeding end 112b of 1121 is arranged close to the NFC radiator 121, to shorten the series wiring between the NFC chip 120, the functional radiator 112, and the NFC radiator 121, and to make the electrical connection end 112c of the first functional radiator 1120 and The electrical connection ends 112d of the second functional radiator 1121 are close to each other, which facilitates the electrical connection between the first functional radiator 1120 and the second functional radiator 1121 .

Further, referring to FIG. 24 and FIG. 25 , the antenna device 10 further includes a first matching circuit 108 and a second matching circuit 109 . The first matching circuit 108 is electrically connected between the feeding terminal 112 a of the first functional radiator 1120 and the first electrode terminal. The second matching circuit 109 is electrically connected between the feeding end 112b of the second functional radiator 1121 and the NFC radiator 121, and is used to adjust the working frequency of the second functional radiator 1121 to the working frequency when the NFC chip 120 is in the working mode. frequency. Wherein, the first matching circuit 108 may include one or more of an L-shaped matching circuit, a π-shaped matching circuit, a T-shaped matching circuit, a multi-stage matching circuit, and the like. The second matching circuit 109 may include one or more of an L-shaped matching circuit, a π-shaped matching circuit, a T-shaped matching circuit, a multi-stage matching circuit, and the like.

By setting the first matching circuit 108 between the feeding end 112a and the first electrode end of the first functional radiator 1120, it can be used to adjust the working frequency of the first functional radiator 1120, so that the first functional radiator 1120 has a relatively Good NFC performance. By setting the second matching circuit 109 between the feeding end 112b of the second functional radiator 1121 and the NFC radiator 121, it can be used to adjust the operating frequency of the second functional radiator 1121, so that the second functional radiator 1121 has a relatively Good NFC performance.

The features mentioned above in the description, claims and drawings can be combined with one another in any way as long as they are meaningful within the scope of the present application. The advantages and features described for the antenna arrangement 10 apply in a corresponding manner to the printed circuit board assembly 1 and the electronic device 100 .

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned Changes, modifications, substitutions and modifications are made to the embodiments, and these improvements and modifications are also regarded as the protection scope of the present application.

Claims (20)

1. An antenna device comprising:

   A functional antenna, wherein the functional antenna includes at least one functional chip and at least one functional radiator, the functional chip is electrically connected to the functional radiator, and is used to stimulate the functional radiator to send and receive target antenna signals; and

   NFC antenna, the NFC antenna includes an NFC chip and an NFC radiator, the NFC chip includes a first electrode terminal and a second electrode terminal, the first electrode terminal, the functional radiator, the NFC radiator and the NFC radiator The second electrode ends are electrically connected in turn to form a series loop, and the NFC chip is used to stimulate the functional radiator and the NFC radiator to send and receive NFC signals.
2. According to the antenna device according to claim 1, the NFC radiator comprises a connected first NFC radiator and a second NFC radiator, the first NFC radiator extends along a first direction, and the second NFC radiator extending along a second direction; wherein, the first direction intersects the second direction.
3. According to the antenna device according to claim 1, the first end of the first NFC radiation part faces the functional radiator and is electrically connected to the functional radiator, and the second end of the first NFC radiation part is connected to the functional radiator. The first end of the second NFC radiation part is connected and electrically connected, and the second end of the second NFC radiation part faces the NFC chip and is electrically connected to the second electrode terminal.
4. According to the antenna device according to any one of claims 1 to 3, at least one of the functional radiators includes a first functional radiator and a second functional radiator electrically connected, the first electrode terminal, the first functional radiator The radiator, the second functional radiator, the NFC radiator and the second electrode terminal are electrically connected in sequence to form a series loop.
5. According to the antenna device according to claim 4, the feeding terminal of the first functional radiator is electrically connected to the first electrode terminal and the functional chip, and the feeding terminal of the second functional radiator is electrically connected to the function chip and the NFC radiator.
6. The antenna device according to claim 5, the antenna device further comprises a first conductive wire and a second conductive wire, the first conductive wire is electrically connected to the feeding end of the first functional radiator and Between the first electrode terminals, the second conductive wiring is electrically connected between the feeding terminal of the second functional radiator and the NFC radiator.
7. The antenna device according to claim 6, further comprising a first feeder and a second feeder, the first feeder is arranged at a feeder end of the first functional radiator, and One end of the first feeding part is electrically connected to the feeding end of the first functional radiator, and the other end of the first feeding part is electrically connected to the first conductive trace and the functional chip; The second feeding part is arranged at the feeding end of the second functional radiator, and one end of the second feeding part is electrically connected to the feeding end of the second functional radiator, and the second feeding part The other end of the second conductive wire is electrically connected to the functional chip.
8. The antenna device according to claim 4, the antenna device further comprises a first electrical connection unit, the first electrical connection unit is electrically connected to the electrical connection end of the first functional radiator and the second functional radiator Between the electrical connection terminals of the NFC chip, the first electrical connection unit is used to make the first functional radiator and the second functional radiator in a conduction state when the NFC chip is in the working mode, and use When the functional chip is in the working mode, the first functional radiator and the second functional radiator are turned off.
9. According to the antenna device according to claim 8, the antenna device further comprises a second electrical connection unit, the second electrical connection unit is electrically connected between the ground terminal of the first functional radiator and the reference ground, the The second electrical connection unit is used for disconnecting the ground end of the first functional radiator from the reference ground when the NFC chip is in the working mode, and for disconnecting the functional chip when the functional chip is in the working mode , making the ground terminal of the first functional radiator and the reference ground in a conduction state.
10. The antenna device according to claim 9, further comprising a third electrical connection unit, the third electrical connection unit is electrically connected between the ground end of the second functional radiator and the reference ground, The third electrical connection unit is used for disconnecting the ground terminal of the second functional radiator from the reference ground when the NFC chip is in the working mode, and for disconnecting the ground terminal of the second functional radiator and the reference ground when the functional chip is in working mode. mode, make the ground terminal of the second functional radiator and the reference ground in a conduction state.
11. The antenna device according to claim 10, wherein the first electrical connection unit includes at least one inductor, the second electrical connection unit includes at least one first capacitor, and the third electrical connection unit includes at least one second capacitor.
12. The antenna device according to claim 10, the feeding terminal of the first functional radiator, the ground terminal of the first functional radiator, the electrical connection terminal of the first functional radiator, the second functional The electrical connection terminal of the radiator, the ground terminal of the second functional radiator, and the feeding terminal of the second functional radiator are arranged in sequence.
13. The antenna device according to any one of claims 5 to 12, the antenna device further comprises a first matching circuit and a second matching circuit, the first matching circuit is electrically connected to the feed of the first functional radiator terminal and the first electrode terminal, the second matching circuit is electrically connected between the feeding terminal of the second functional radiator and the NFC radiator.
14. According to the antenna device according to any one of claims 1 to 3, the target antenna signal includes one of GPS signals, WIFI signals, 2G mobile communication signals, 3G mobile communication signals, 4G mobile communication signals, and 5G mobile communication signals or more.
15. A circuit board assembly, comprising at least one circuit board and the antenna device according to any one of claims 1 to 14, the functional antenna and the NFC antenna are both arranged on the circuit board.
16. The circuit board assembly according to claim 15, at least one circuit board includes a first circuit board and a second circuit board, the functional radiator is arranged on the first circuit board, and the NFC radiator is arranged on the on the second circuit board.
17. According to the circuit board assembly according to claim 16, the functional chip and the NFC chip are arranged on the first circuit board.
18. According to the circuit board assembly according to claim 15, at least one circuit board further comprises a main board, and the functional chip and the NFC chip are both arranged on the main board.
19. An electronic device comprising a casing and the circuit board assembly according to any one of claims 15 to 18, the circuit board assembly being arranged in the casing.
20. According to the electronic device according to claim 19, at least one side of the functional radiator faces the top of the housing, and the functional radiator is used to send and receive the target antenna signal toward the top of the housing.

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