CN114976589A

CN114976589A - Antenna device and terminal

Info

Publication number: CN114976589A
Application number: CN202210744275.0A
Authority: CN
Inventors: 万小勇
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-08-30
Also published as: WO2024001097A1

Abstract

The application discloses an antenna device and a terminal. The antenna device includes a first antenna radiator, a second antenna radiator, a first non-near-field communication chip, and a near-field communication chip. The first antenna radiator includes a first feeding point and a first connection point, and the first connection point is used for grounding. The second antenna radiator comprises a second feed point and a second connection point, the second connection point is used for grounding, and the first antenna radiator and the second antenna radiator are connected through the first connection point and the second connection point. The first non-near-field communication chip is connected with the first feeding point and/or the second feeding point, and the first non-near-field communication chip transmits a first non-near-field communication excitation current to the first antenna radiator through the first feeding point and/or transmits the first non-near-field communication excitation current to the second antenna radiator through the second feeding point. The near field communication chip transmits near field communication exciting current to the first antenna radiator through the first feeding point and transmits the near field communication exciting current to the second antenna radiator through the second feeding point.

Description

Antenna device and terminal

Technical Field

The application relates to the technical field of smart phones, in particular to an antenna device and a terminal.

Background

With the development of science and technology, smart phones are widely used and have more functions, and become necessary electronic equipment for daily life of people. In a smart phone, various antennas, such as a cellular data antenna, a wireless Communication (WIFI) antenna, a Near Field Communication (NFC) antenna, etc., are often disposed inside the smart phone. However, when the antenna is arranged, in order to ensure the communication quality of the antenna, the antenna is often required to have a certain distance with other antennas and components inside the smart phone, so that the occupied space of the antenna is large, and the miniaturization of the electronic device is not facilitated.

Disclosure of Invention

The embodiment of the application provides an antenna device and a terminal.

The antenna device of the embodiment of the application comprises a first antenna radiating body, a second antenna radiating body, a first non-near-field communication chip and a near-field communication chip. The first antenna radiator includes a first feeding point and a first connection point for grounding. The second antenna radiator comprises a second feed point and a second connection point, the second connection point is used for grounding, and the first antenna radiator and the second antenna radiator are connected through the first connection point and the second connection point. The first non-near-field communication chip is connected to the first feeding point and/or the second feeding point, and the first non-near-field communication chip transmits a first non-near-field communication excitation current to the first antenna radiator through the first feeding point and/or transmits the first non-near-field communication excitation current to the second antenna radiator through the second feeding point. The two ends of the near field communication chip are respectively connected with the first feeding point and the second feeding point, and the near field communication chip transmits a near field communication excitation current to the first antenna radiator through the first feeding point and transmits the near field communication excitation current to the second antenna radiator through the second feeding point.

The terminal of the embodiment of the application comprises a shell and an antenna device. The antenna device is arranged on the shell. The antenna device comprises a first antenna radiating body, a second antenna radiating body, a first non-near-field communication chip and a near-field communication chip. The first antenna radiator includes a first feeding point and a first connection point for grounding. The second antenna radiator comprises a second feed point and a second connection point, the second connection point is used for grounding, and the first antenna radiator and the second antenna radiator are connected through the first connection point and the second connection point. The first non-near-field communication chip is connected with the first feeding point and/or the second feeding point, and the first non-near-field communication chip transmits a first non-near-field communication excitation current to the first antenna radiator through the first feeding point and/or transmits the first non-near-field communication excitation current to the second antenna radiator through the second feeding point. The two ends of the near field communication chip are respectively connected with the first feeding point and the second feeding point, and the near field communication chip transmits a near field communication excitation current to the first antenna radiator through the first feeding point and transmits the near field communication excitation current to the second antenna radiator through the second feeding point.

In the antenna device and the terminal according to the embodiments of the present application, since the first non-nfc chip can transmit the first non-nfc excitation current to the first antenna radiator through the first feeding point or transmit the first non-nfc excitation current to the second antenna radiator through the second feeding point, and the nfc chip can also transmit the nfc excitation current to the first antenna radiator through the first feeding point and can transmit the nfc excitation current to the second antenna radiator through the second feeding point, it can be seen that both the first non-nfc chip and the nfc chip can transmit signals through the first antenna radiator and the second antenna radiator, that is, the first non-nfc chip and the nfc chip share at least one of the first antenna radiator and the second antenna radiator, so that the occupied space of the nfc chip can be reduced, therefore, the space occupied by the whole antenna device is reduced, and the miniaturization of the terminal is facilitated.

Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic plan view of an antenna arrangement according to some embodiments of the present application;

FIG. 2 is a schematic plan view of a terminal according to some embodiments of the present application;

fig. 3 is a schematic plan view of an antenna device according to another embodiment of the present application;

fig. 4 is a schematic plan view of an antenna device according to yet another embodiment of the present application;

fig. 5 is a schematic plan view of an antenna device according to yet another embodiment of the present application;

fig. 6 is a schematic plan view of an antenna device according to yet another embodiment of the present application;

fig. 7 is a schematic view of the mounting of the antenna arrangement of fig. 6;

FIG. 8 is a schematic plan view of the internal structure of a terminal according to some embodiments of the present application;

FIGS. 9 and 10 are schematic plan views of the coil and magnetic member of the antenna assembly of certain embodiments of the present application;

fig. 11 is a schematic plan view of a terminal according to some embodiments of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the embodiments of the present application, and are not to be construed as limiting the embodiments of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, an antenna device 100 is provided in the present embodiment. The antenna device 100 comprises an antenna device 100 comprising a first antenna radiator 10, a second antenna radiator 20, a first non-near-field communication chip 30, a near-field communication chip 40. The first antenna radiator 10 includes a first feeding point 11 and a first connection point 12, and the first connection point 12 is used for grounding. The second antenna radiator 20 comprises a second feed point 31 and a second connection point 22, the second connection point 22 being intended for ground, the first antenna radiator 10 and the second antenna radiator 20 being connected by means of the first connection point 12 and the second connection point 22. The first non-near-field communication chip 30 is connected to the first feeding point 11 and/or the second feeding point 21, and the first non-near-field communication chip 30 transmits a first non-near-field communication excitation current to the first antenna radiator 10 through the first feeding point 11 and/or transmits a first non-near-field communication excitation current to the second antenna radiator 20 through the second feeding point 21. Both ends of the nfc chip 40 are respectively connected to the first feeding point 11 and the second feeding point 21, and the nfc chip 40 transmits an nfc excitation current to the first antenna radiator 10 through the first feeding point 11 and transmits an nfc excitation current to the second antenna radiator 20 through the second feeding point 21.

The first non-near-field communication chip 30 may be a cellular data communication chip, a Bluetooth (BT) communication chip, a Global Positioning System (GPS)) communication chip, or a wireless network (WIFI) communication chip. The near Field communication chip 40 is an nfc (near Field communication) chip. The first non-near-field communication chip 30 is taken as an example of a cellular data communication chip, and it is understood that the first non-near-field communication chip 30 is not limited to the cellular data communication chip.

In the antenna device 100 according to the embodiment of the present application, since the first non-near-field communication chip 30 can transmit the first non-near-field communication excitation current to the first antenna radiator 10 through the first feeding point 11 or transmit the first non-near-field communication excitation current to the second antenna radiator 20 through the second feeding point 21, and the near-field communication chip can also transmit the near-field communication excitation current to the first antenna radiator 10 through the first feeding point 11 and can transmit the near-field communication excitation current to the second antenna radiator 20 through the second feeding point 21, it can be seen that the first non-near-field communication chip 30 and the near-field communication chip 40 can both transmit signals through the first antenna radiator 10 and the second antenna radiator 20, that is, the first non-near-field communication chip 30 and the near-field communication chip 40 share at least one of the first antenna radiator 10 and the second antenna radiator 20, in this way, the occupied space of the near field communication chip 40 can be reduced, and the occupied space of the entire antenna device 100 can be reduced, which is advantageous for the miniaturization of the terminal.

The following is further described with reference to the accompanying drawings.

Referring to fig. 2, the terminal 1000 includes an antenna device 100, a housing 200, a bracket 300, a main board 400, and a display screen 500. The antenna device 100, the bracket 300, the main board 400 and the display screen 500 are disposed on the housing 200. The antenna device 100, the stand 300, and the main board 400 are provided inside the housing 200, and the display screen 500 is provided on the housing 200.

Terminal 1000 can be a mobile phone, a tablet computer, a laptop computer, a smart watch, a head-up display device, a game console, etc. In the embodiment of the present application, the terminal 1000 is a mobile phone as an example, and it is understood that the specific form of the terminal 1000 is not limited to the mobile phone.

Referring to fig. 1, the antenna device 100 includes a first antenna radiator 10, a second antenna radiator 20, a first non-near-field communication chip 30, and a near-field communication chip 40. Wherein the first non-near-field communication chip 30 and the near-field communication chip 40 may share at least one of the first antenna radiator 10 and the second antenna radiator 20 to transmit a signal. As can be seen from the above, the first non-near-field communication chip 30 is a cellular data communication chip, and the near-field communication chip 40 is an NFC chip.

Specifically, the first antenna radiator 10 and the second antenna radiator 20 are antenna lines of the first non-near-field communication chip 30, and the near-field communication chip 40 can transmit signals through the first antenna radiator 10 and the second antenna radiator 20, that is, the near-field communication chip 40 shares the antenna lines of the first non-near-field communication chip 30, so that the occupied space of the near-field communication chip 40 can be reduced, and the occupied space of the whole antenna device 100 can be reduced.

The first antenna radiator 10 and the second antenna radiator 20 may be any radiator structure in the terminal 1000. The first antenna radiator 10 and the second antenna radiator 20 may be independently disposed radiators, may be printed circuits on the main board 400 of the terminal 1000, may be metal branches formed on the housing 200 of the terminal 1000, and the like. The first antenna radiator 10 and the second antenna radiator 20 may be rigid or flexible. The first antenna radiator 10 and the second antenna radiator 20 may be made of a material having high conductivity, such as copper, magnesium, aluminum, or silver.

For example, the first and

second antenna radiators

10 and 20 may be Flexible Printed Circuit (FPC) antennas. For another example, the first and

second antenna radiators

10 and 20 may be Laser-Direct-structuring (LDS) antennas.

Referring to fig. 1 again, the first antenna radiator 10 includes a first feeding point 11 and a first connection point 12. Wherein first connection point 12 can be connected to a ground point of terminal 1000. For example, first connection point 12 is connected to a ground point on main board 400 of terminal 1000.

The second antenna radiator 20 comprises a second feed point 21 and a second feed point 22. Likewise, second connection point 22 can be connected to a ground point of terminal 1000. For example, second connection point 22 is connected to a ground point of main board 400 of terminal 1000. Wherein the first antenna radiator 10 and the second antenna radiator 20 are connected by a first connection point 21 and a second connection point 22.

In one embodiment, the first connection point 11 and the second connection point 21 may also be commonly connected to a ground point of the main board of the terminal 1000 to be electrically connected through the main board 400 of the terminal 1000, so that the first antenna radiator 10 and the second antenna radiator 20 are connected.

In one embodiment, referring to fig. 3, the first non-near-field communication chip 30 may be connected to the first antenna radiator 10 through the first feeding point 11 to transmit a first non-near-field communication excitation current to the first antenna radiator 10. That is, the first non-near-field communication chip 30 may transmit a signal through the first antenna radiator 10.

In another embodiment, referring to fig. 4, the first non-near-field communication chip 30 may be connected to the second antenna radiator 20 through the second feeding point 21 to transmit the first non-near-field communication excitation current to the second antenna radiator 20. That is, the first non-near-field communication chip 30 may transmit a signal through the second antenna radiator 20.

In addition, referring to fig. 1, the first non-near-field communication chip 30 may further connect to the first antenna radiator 10 through the first feeding point 11 and connect to the second antenna radiator 20 through the second feeding point 21, so as to transmit the first non-near-field communication excitation current to the first antenna radiator 10 and the second antenna radiator 20, respectively. That is, the first non-near-field communication chip 30 may transmit signals through the first and

second antenna radiators

10 and 20. When the first non-near-field communication chip 30 transmits the first non-near-field communication excitation current to the first antenna radiator 10 or the second antenna radiator 20, the first antenna radiator 10 or the second antenna radiator 20 directly transmits a signal from the terminal 1000.

Referring to fig. 1, the near field communication chip 40 can transmit the near field communication excitation current through the first feeding point 11 and the second feeding point 21. The nfc chip 40 may send a positive nfc excitation current through the first feeding point 11 and a negative nfc excitation current through the second feeding point 21. That is, the end of the nfc chip 40 connected to the first feeding point 11 is a positive port, and the end of the nfc chip 40 connected to the second feeding point 21 is a negative port. The near field communication excitation current transmitted by the near field communication chip 40 may be transmitted through the first feeding point 11 and flow back into the near field communication chip 40 via the second feeding point 21, thereby forming a current loop.

Similarly, the nfc chip 40 may send a negative nfc excitation current through the first feeding point 11 and a positive nfc excitation current through the second feeding point 21. That is, the end of the nfc chip 40 connected to the first feeding point 11 is a negative port, and the end of the nfc chip 40 connected to the second feeding point 21 is a positive port. The near field communication excitation current transmitted by the near field communication chip 40 may be transmitted through the second feeding point 21 and flow back into the near field communication chip 40 via the first feeding point 11, thereby forming a current loop.

Referring to fig. 5, in some embodiments, the antenna device 100 includes a first inductor 50 and a second inductor 60.

As can be seen from the above, the first non-near-field communication chip 30 is a cellular data communication chip, and the near-field communication chip 40 is an NFC chip. Generally, the operating frequency of an NFC chip is around 13.5 megahertz (MHz), while the operating frequency of a cellular data communication chip is above 600 MHz. It will be appreciated that the near field communication chip 40 operating frequency is less than the operating frequency of the cellular data communication chip.

In conjunction with fig. 5, it can be seen that both ends of the near field communication chip 40 are connected to the first feeding point 11 and the second feeding point 21 through the second inductor 60, respectively, and the first connection point 12 and the second connection point 22 are grounded through the first inductor 50.

The first inductor 50 and the second inductor 60 may be disposed on the main board 400 of the terminal 1000. When the nfc chip 40 transmits the nfc excitation current to the first antenna radiator 10 and the second antenna radiator 20, the nfc excitation current may be transmitted to the second inductor 60 connected to the first feeding point 11 through the main board 400, and then transmitted to the second inductor 60 connected to the second feeding point 21 through the first inductor 50, so as to be transmitted back to the nfc chip 40.

In addition, the first inductor 50 may be connected to a ground point of the main board 400, and the first connection point 12 and the second connection point 22 may be connected to the ground point of the main board 400 through the first inductor 50, so as to perform a grounding process.

Preferably, the first inductor 50 may not be connected to the ground point of the motherboard 400, so that when the nfc chip 40 transmits the nfc excitation current to the first antenna radiator 10 and the second antenna radiator 20, the nfc excitation current does not pass through the ground point of the motherboard 400, so as to avoid a loss of the nfc excitation current caused by the ground, thereby avoiding a loss of magnetic field energy generated by the nfc excitation current, and improving the performance of the nfc chip 40.

Specifically, the working principle of the first inductor 50 and the second inductor 60 is as follows: pass low frequencies and block high frequencies. Thus, when the near field communication chip 40 is in operation, the high frequency signal generated by the first non-near-field communication chip 30 cannot be transmitted to the near field communication chip 40 through the first inductor 50 and the second inductor 60, i.e. when the first non-near-field communication chip 30 transmits the first non-near-field communication excitation current to the first antenna radiator 10, the first non-near-field communication excitation current is not transmitted to the second antenna radiator 20 through the first inductor 50. Likewise, when the first non-near-field communication chip 30 transmits the first non-near-field communication excitation current to the second antenna radiator 20, the first non-near-field communication excitation current is not transmitted to the first antenna radiator 10 through the first inductor 50. And the first non-near-field communication excitation current is not yet transmitted to the near-field communication chip 40 through the second inductance 60.

Therefore, it can be ensured that when the first non-near-field communication chip 30 and the near-field communication chip 40 operate, the first non-near-field communication excitation current transmitted by the first non-near-field communication chip 30 does not affect the near-field communication chip 40, so as to ensure the normal operation of the antenna device 100.

In addition, referring to fig. 5, in some embodiments, the antenna device 100 may further include a capacitor 70. The first non-near-field communication chip 30 may be connected to the first feeding point 11 through a capacitor 70, may be connected to the second feeding point 21 through a capacitor 70, and may be connected to the first feeding point 11 and the second feeding point 21 through two capacitors 70.

Similarly, capacitor 70 can also be disposed on motherboard 400 of terminal 1000. When the first non-near-field communication chip 30 transmits the first non-near-field communication excitation current to the first antenna radiator 10 and the second antenna radiator 20, the first non-near-field communication excitation current may be transmitted to the capacitor 70 connected to the first feeding point 11 through the main board 400 so as to be transmitted to the first antenna radiator 10, and may be transmitted to the second antenna radiator 20 through the capacitor 70 connected to the second feeding point 21.

Since the first inductor 50 is disposed between the first antenna radiator 10 and the second antenna radiator 20, the first non-near-field communication chip 30 does not transmit the first non-near-field communication excitation current to the second antenna radiator 20 when transmitting the first non-near-field communication excitation current to the first antenna radiator 10. Similarly, when the first non-near-field communication chip 30 transmits the first non-near-field communication excitation current to the second antenna radiator 20, the first non-near-field communication excitation current is not transmitted to the first antenna radiator 10.

Furthermore, the operation principle of the capacitor 70 is as follows: high frequency is passed and low frequency is blocked. Therefore, when the near field communication chip 40 transmits the near field communication excitation current to the first antenna radiator 10 and the second antenna radiator 20, the near field communication excitation current cannot be transmitted to the first non-near field communication chip 30 through the capacitor 70.

Therefore, when the first non-near-field communication chip 30 and the near-field communication chip 40 operate, the first non-near-field communication excitation current transmitted by the first non-near-field communication chip 30 does not affect the near-field communication chip 40, and the near-field communication excitation current transmitted by the near-field communication chip 40 does not affect the first non-near-field communication chip 30, so that complete signal isolation between the first non-near-field communication chip 30 and the near-field communication chip 40 is achieved, and normal operation of the antenna device 100 is guaranteed.

Referring to fig. 6, the antenna device 100 may further include a coil 80 and a magnetic member 90. Wherein, the coil 80 is disposed on the surface of the magnetic member 90.

In one embodiment, the coil 80 is attached to the surface of the magnetic member 90, and the surface of the magnetic member 90 not attached to the coil 80 may be disposed on the main board 400 and thus disposed in the housing 200 of the terminal 1000.

In another embodiment, please refer to fig. 7, the coil 80 is attached to a surface of the magnetic member 90, and a surface of the magnetic member 90 not attached to the coil 80 can be disposed on the bracket 300, and the bracket 300 is disposed on the main board 400 and is disposed in the housing 200 of the terminal 1000.

Specifically, the coil 80 is connected to the near field communication chip 40, and it is understood that the coil 80 and the magnetic element 90 are antenna lines of the near field communication chip 40, and the near field communication chip 40 can transmit the near field communication excitation current to the first antenna radiator 10 and the second antenna radiator 20 through the coil 80.

For example, the nfc chip 40 transmits a near field communication excitation current to the second antenna radiator 20 through the second inductor 60 connected to the second feeding point 21, then transmits the near field communication excitation current to the first antenna radiator 10 through the first inductor 50, then transmits the near field communication excitation current to the coil 80 through the second inductor 60 connected to the first feeding point 11, and finally transmits the near field communication excitation current back to the nfc chip 40 through the coil 80 to form a complete loop.

At present, in the terminal 1000, since the Near Field Communication (NFC) chip 40 is restricted by surrounding components, the size becomes smaller and smaller, and a smaller space may cause a linear decrease in performance of the NFC chip, thereby causing a poor card swiping experience of a user.

Referring to fig. 2 and 8, since the antenna line (coil 80) of the near field communication chip 40 needs to be reduced by ferrite material after the near field communication chip 40 is mounted on the terminal 1000, the influence of the conductor inside the housing 200 of the terminal 1000 on the magnetic field generated by the coil 80. Wherein, the ferrite is formed by sintering nickel, zinc, iron and other materials, crushing and then bonding with special glue. Specifically, ferrite is the magnetic member 90, and the magnetic member 90 may be made of other materials, and is not limited to ferrite.

When the NFC chip, i.e., the near field communication chip 40, is mounted, if the antenna line (the first antenna radiator 10 or the second antenna radiator 20) of the first non-near-field communication chip 30 is too close to the near field communication chip 40 (as shown in fig. 8 at positions L1 and L2), the first non-near-field communication excitation current transmitted by the first non-near-field communication chip 30 to the first antenna radiator 10 or the second antenna radiator 20 will affect the near field communication excitation current transmitted by the near field communication chip 40 to the first antenna radiator 10 and the second antenna radiator 20, so that the signals transmitted by the first non-near-field communication chip 30 and the near field communication chip 40 will interfere with each other.

And if the near field communication chip 40 is too close to the camera 600 of the terminal 1000 (as shown in the position L4 in fig. 8), the metal in the camera 600 will also affect the signals transmitted by the near field communication chip 40. Therefore, the distances at the positions of L1, L2, and L4 need to be sufficiently large.

Since the coil 80 is provided on the surface of the magnetic material 90, the material of the magnetic material 90 has a great influence on the first and

second antenna radiators

10 and 20, and thus the position of the coil 80 cannot be directly moved.

On the other hand, since the ferrite (magnetic member 90) is easy to drop off, in order to ensure that the ferrite-dropped off will not enter into the battery cell of the battery 700 (shown in fig. 8) of the terminal 1000 and ensure that the battery 700 will not catch fire, the distance L3 between the near field communication chip 40 and the battery 700 also needs to be large enough. This results in a large space occupied when the near field communication chip 40 is mounted.

In the antenna device 100 and the terminal 1000 according to the embodiment of the present application, as shown in fig. 1 to 4, since the first non-near-field communication chip 30 and the near-field communication chip 40 share at least one of the first antenna radiator 10 and the second antenna radiator 20, it is not necessary to consider a distance problem between the first antenna radiator 10 and the second antenna radiator 20, an influence of ferrite on the battery 700, and a distance problem between the coil 80 and the camera 600, so that size problems of L1, L2, L3, and L4 are satisfied, and the performance of the near-field communication chip 40 is ensured to be good.

More specifically, as shown in fig. 7, the coil 80, the magnetic member 90, the bracket 300, and the main board 400 are sequentially stacked. More specifically, referring to fig. 2 and fig. 6, in the light emitting direction (the Z direction shown in fig. 2) of the display screen 500 of the terminal 1000, the display screen 500, the main board 400, the bracket 300, the magnetic member 90, the coil 80 and the housing 200 are sequentially stacked.

According to this configuration, main board 400 is located on the side closest to display 500 of terminal 1000, i.e., the side farthest from housing 200 of terminal 1000. Coil 80 is located on the side of display screen 500 furthest from terminal 1000, i.e. the side of housing 200 closest to terminal 1000. That is, the coil 80 is mounted on the bracket 300 through the magnetic member 90, and is mounted on the main board 400 through the bracket 300 to be disposed inside the case 200.

The magnetic member 90 is located between the coil 80 and the bracket 300 and covers the coil (for example, the orthographic projection of the magnetic member 90 on the bracket 300 and the orthographic projection of the coil 80 on the bracket 300 are covered), so that the weakening of the magnetic field generated by the coil 80 by the metal on the main board 400 and the bracket 300 can be isolated, thereby ensuring the performance of the antenna circuit of the nfc chip 40. On the other hand, it can be ensured that the magnetic field generated by the coil 80 does not diverge toward the direction close to the display screen 500, so as to ensure the normal operation of the display screen 500, that is, the magnetic field generated by the coil 80 is only emitted through the housing 200, thereby ensuring the performance of the near field communication chip 40.

In another embodiment, please refer to fig. 9 and 10, the magnetic member 90 may include a first magnetic part 91 and a second magnetic part 92. The coil 80 may include a first coil trace 81 and a second coil trace 82. Wherein, the current direction of the first coil wire 81 is opposite to the current direction of the second coil wire 82.

The first magnetic part 91 is disposed on a side of the coil 80 opposite to the support 300, and covers a first side (a side away from the support 300) of the first coil trace 81. The second magnetic portion 92 is disposed between the bracket 300 and the second coil trace 82 and covers a second side (a side near the bracket 300) of the second coil trace 82, it being understood that the first side and the second side are opposite. Referring to fig. 9 and fig. 10, it can be seen that the first magnetic part 91 is located above the first coil trace 81 and partially covers the first coil trace 81. The second magnetic part 92 is located between the bracket 300 and the coil 80 and completely covers the coil 80.

More specifically, since the current directions of the first coil wire 81 and the second coil wire 82 are opposite, when the first coil wire 81 and the second coil wire 82 approach each other, the magnetic field generated by the first coil wire 81 and the magnetic field generated by the second coil wire 82 affect each other, thereby affecting the overall magnetic field strength of the coil 80 and weakening the overall magnetic field strength of the coil 80.

The first magnetic part 91 covers the first coil wire 81, so that the reverse current generated by the first coil 80 can be isolated, and the magnetic field generated by the first coil wire 81 is isolated, so that the current directions generated by the coils 80 are uniform, and a good magnetic field radiation effect is obtained, so that the communication performance of the near field communication chip 40 is good. And the second magnetic part 92 covers the coil 80, so that the second coil wire 82 and the bracket 300 can be completely isolated, the weakening of the magnetic field generated by the coil 80 by the metal on the main board 400 and the bracket 300 is isolated, and the good overall performance of the near field communication chip 40 is ensured.

The number of the first coil traces 81 is smaller than the number of the second coil traces 82. For example, when the number of the first coil wires 81 is N, the number of the second coil wires 82 may be N +1, where N is a positive integer.

In conjunction with fig. 9 and 10, it can be seen that the second magnetic part 92 is located between the second coil trace 82 and the bracket 300 to isolate the bracket 300 from the second coil trace 82. The first magnetic part 91 covers only a portion of the first coil trace 81. Therefore, the side of the second coil trace 82 opposite to the rear cover of the terminal 1000 is not covered by the magnetic member 90. And the number of the first coil wires 81 is less than the number of the second coil wires 82, so that the magnetic field generated by the second coil wires 82 is stronger, and thus, the transmitting magnetic field intensity of the second coil wires 82 is stronger, thereby ensuring better overall performance of the near field communication chip 40.

Further, the number of turns of the coil 80 may be multiple turns, i.e., greater than 1 turn. For example, the number of turns of the coil 80 may be two, three, four, and more turns, etc. Thus, compared with the antenna of the single coil 80, the first antenna line 81 of the multi-coil 80 has larger inductance and stronger radiation capability, thereby ensuring better overall performance of the near field communication chip 40.

In some embodiments, the antenna device 100 may further include a second non-near-field communication chip (not shown). The third antenna module may be a Bluetooth (BT) antenna, a Global Positioning System (GPS) antenna, or a wireless network (WIFI) antenna.

Specifically, when the first non-near-field communication chip 30 is connected to the first feeding point 11 to transmit a first non-near-field communication excitation current to the first antenna radiator 10 through the first feeding point 11, the second non-near-field communication chip may be connected to the second feeding point 21 to transmit a second non-near-field communication excitation current to the second antenna radiator 20 through the second feeding point 12 to complete the transmission of the signal.

Similarly, when the first non-near-field communication chip 30 is connected to the second feeding point 21 to transmit the first non-near-field communication excitation current to the second antenna radiator 20 through the first feeding point 21, the second non-near-field communication chip may be connected to the first feeding point 11 to transmit the second non-near-field communication excitation current to the first antenna radiator 10 through the first feeding point 11 to complete the signal transmission. In this way, terminal 1000 can complete transmission of multiple signals through antenna apparatus 100.

Referring to fig. 1, 2, and 8, terminal 1000 can include a front side 1001, a back side 1002, and a side 1003.

Specifically, the first antenna radiator 10, the second antenna radiator 20, and the bracket 300 may be disposed on the front surface 1001, the back surface 1002, or the side surface 1003, and at least two of the first antenna radiator 10, the second antenna radiator 20, and the bracket 300 may be disposed at different positions.

For example, when the first and

second antenna radiators

10 and 20 are disposed on the side 1003, the bracket 300 may be disposed on the rear 1002. In this way, when the first non-near-field communication chip 30 transmits the first non-near-field communication excitation current, a signal can be transmitted from the side 1003 of the terminal 1000 through the first antenna radiator 10 and the second antenna radiator 20 disposed at the side 1003. When the nfc chip 30 transmits the nfc excitation current, a signal can be transmitted from the side 1003 of the terminal 1000 through the first antenna radiator 10 and the second antenna radiator 20 disposed on the side 1003, and a signal can be transmitted directly from the rear 1002 of the terminal 1000 through the cradle 300 disposed on the rear. In this way, the near field communication chip 40 can transmit signals in multiple directions and angles.

Preferably, the first and

second antenna radiators

10 and 20 are disposed on the side 1002 and near the top 1004 of the terminal 1000, and the support 300 is disposed near the back 1002. Thus, when a user needs to swipe a card through the NFC function, the user can contact the sensor through the back 1002 or the top of the terminal 1000, so as to complete the card swipe. Therefore, the NFC function is not only realized on the back 1002 of the terminal 1000, but also realized on the side 1003, that is, the NFC function is freely swiped in different directions and angles, so that the user experience is greatly improved.

Referring to fig. 2, the housing 200 may further include a metal frame 201. Metal frame 201 is disposed on side 1003 of terminal 1000.

Specifically, the first and

second antenna radiators

10 and 20 may be part of the metal bezel 201. For example, the first antenna radiator 10 and the second antenna radiator 20 may be metal branches of the metal bezel 201, or may be printed circuits on the metal bezel 201. Preferably, the first antenna radiator 10 and the second antenna radiator 20 may be located at the top 1004 of the terminal 1000, so that the communication of the near field communication chip 40 is not limited to be implemented at the back 1002 of the terminal 1000, but also implemented at the top 1004, that is, a free card swiping function of an NFC function in different directions and angles is implemented, so as to greatly improve the user experience of a user.

In some embodiments, the housing 200 may further include a plastic frame (not shown), the plastic frame may be disposed on the top 1004 of the terminal 1000, the first antenna radiator 10 and the second antenna radiator 20 may also be FPC antennas or LDS antennas, and the first antenna radiator 10 and the second antenna radiator 20 may be attached to the plastic frame.

In the antenna device 100 and the terminal 1000 according to the embodiment of the present application, the first non-near-field communication chip 30 and the near-field communication chip 40 share the first antenna radiator 10 and the second antenna radiator 20, so that the near-field communication chip 40 can transmit signals through the first antenna radiator 10 and the second antenna radiator 20, and can also transmit signals through the bracket 300, so that the direction and the angle of signal transmission of the near-field communication chip 40 are increased, and the user experience is improved.

On the other hand, the first non-near-field communication chip 30 and the near-field communication chip 40 share the first antenna radiator 10 and the second antenna radiator 20, and the limitation of the installation manner of the near-field communication chip 40 can be avoided, so that the occupied space required for installing the near-field communication chip 40 is reduced, and the manufacturing cost is reduced.

On the other hand, when the coil connected to the nfc chip 40 includes a plurality of turns, the first coil trace 81 is isolated by disposing the asymmetric coil trace and covering a smaller portion of the coil trace with the magnetic member 90, so as to reduce the weakening of the magnetic field generated by the entire coil 80 due to the reverse current caused by the first coil trace 81. Meanwhile, the current direction of the whole antenna line can be unified, so that the inductance of the whole antenna line is increased, and the overall performance of the near field communication chip 40 is better. And the inductance of coil 90 is increased, reducing the capacitance value used for matching the circuitry of near field communication chip 40, which can reduce the error loss of the device and the overall consistency of terminal 1000 can be better.

In the description herein, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present application, which is defined by the claims and their equivalents.

Claims

1. An antenna device, comprising:

a first antenna radiator including a first feeding point and a first connection point, the first connection point being used for grounding;

the second antenna radiator comprises a second feed point and a second connection point, the second connection point is used for grounding, and the first antenna radiator and the second antenna radiator are connected through the first connection point and the second connection point;

a first non-near-field communication chip connected to the first feeding point and/or the second feeding point, the first non-near-field communication chip transmitting a first non-near-field communication excitation current to the first antenna radiator through the first feeding point and/or transmitting the first non-near-field communication excitation current to the second antenna radiator through the second feeding point;

and two ends of the near field communication chip are respectively connected with the first feeding point and the second feeding point, and the near field communication chip transmits a near field communication excitation current to the first antenna radiator through the first feeding point and transmits the near field communication excitation current to the second antenna radiator through the second feeding point.

2. The antenna device according to claim 1, wherein the antenna device comprises a first inductor and a second inductor, the first connection point and the second connection point are connected through the first inductor, and two ends of the nfc chip are respectively connected to the first feeding point and the second feeding point through the second inductor.

3. The antenna device according to claim 2, characterized in that the antenna device further comprises a capacitance through which the first non-near-field communication chip is connected with the first feeding point and/or the second feeding point.

4. The antenna device according to claim 2, characterized in that the antenna device comprises:

a magnetic member; and

the coil is arranged on the surface of the magnetic piece and connected with the near field communication chip.

5. The antenna device according to claim 4, wherein the magnetic member includes a first magnetic portion and a second magnetic portion, the coil further includes a first coil trace and a second coil trace, current directions of the first coil trace and the second coil trace are opposite, the first magnetic portion covers a first side of the first coil trace, the second coil trace is disposed on the second magnetic portion and covers a second side of the second coil trace, and the first side and the second side are opposite.

6. The antenna device according to claim 5, wherein the number of the first coil traces is smaller than the number of the second coil traces.

7. The antenna device according to claim 4, wherein the number of turns of the coil is greater than 1.

8. The antenna device of claim 1, further comprising a second non-near-field communication chip,

when the first non-near-field communication chip is connected with the first feed point, the second non-near-field communication chip is connected with the second antenna radiator through the second feed point, and the second non-near-field communication chip transmits a second non-near-field communication excitation current to the second antenna radiator through the second feed point; or

And under the condition that the first non-near-field communication chip is connected with the second feeding point, the second non-near-field communication chip is connected with the first antenna radiator through the first feeding point, and the second non-near-field communication chip transmits a second non-near-field communication excitation current to the first antenna radiator through the first feeding point.

9. A terminal, characterized in that it comprises a housing and an antenna device according to any of claims 1-8, said antenna device being arranged in said housing.

10. The terminal according to claim 9, wherein the magnetic element of the antenna device comprises a first magnetic portion and a second magnetic portion, the terminal further comprises a support and a main board, the support is disposed on the main board, the coil of the antenna device is disposed on the support through the magnetic element, the first magnetic portion is disposed on a side of the first coil trace of the coil opposite to the support, and the second magnetic element is disposed between the second coil trace of the coil and the support.

11. The terminal according to claim 10, further comprising a display screen, wherein the housing, the coil, the magnetic member, the bracket, the main board, and the display screen are stacked in sequence in a light emitting direction of the display screen, the terminal comprises a front surface, a back surface, and side surfaces,

the first antenna radiator, the second antenna radiator and the bracket may be disposed on the front surface, the back surface or the side surface, and at least two of the first antenna radiator, the second antenna radiator and the bracket are disposed at different positions; or

The first antenna radiator and the second antenna radiator are arranged on the side face and close to the top of the terminal, and the support is close to the back face.

12. The terminal of claim 11, wherein the housing comprises a metal bezel disposed on the side surface, and wherein the first antenna radiator and the second antenna radiator are part of the metal bezel.