CN205992592U - Antenna assembly and mobile terminal - Google Patents

Abstract

The utility model provides an antenna device and a mobile terminal, wherein the antenna device includes: a first antenna component, the first antenna component is connected to the main board through a first feed point; a second antenna component, the second antenna The component is connected to the main board through a second feed point, wherein the first end of the second antenna component is adjacent to the first end of the first antenna component; the first inductance, the first inductance of the first The end is grounded, the second end of the first inductor is connected to the first end of the first antenna component; and the second inductor, the first end of the second inductor is grounded, and the second end of the second inductor Connected to the first end of the second antenna assembly. The embodiment of the utility model can improve the isolation between antennas and reduce the mutual interference between systems.

Description

Antenna device and mobile terminal

technical field

The utility model relates to the technical field of mobile terminals, in particular to an antenna device and a mobile terminal.

Background technique

With the continuous development of mobile terminals, there are more and more functions of mobile terminals, such as fingerprint functions such as camera function, fingerprint unlocking, and fingerprint payment. However, the introduction of functional modules corresponding to some functions will cause the mobile terminal LTE (Long Term Evolution, long-term evolution) main antenna to be integrated with the GPS (Global Positioning System, Global Positioning System) antenna and WiFi (Wireless-Fidelity, Wireless Fidelity) antenna. Located above the whole machine, the distance between the antennas is obviously less than 1/2 of the signal wavelength, which leads to mutual coupling between the antennas. Mutual coupling between antennas can seriously affect signal reception performance between wireless systems.

Utility model content

The utility model aims to solve the above-mentioned technical problems at least to a certain extent.

Therefore, the first purpose of the present utility model is to provide an antenna device, which can improve the isolation between antennas and reduce the mutual interference between systems.

The second purpose of the utility model is to provide a mobile terminal.

In order to achieve the above purpose, an antenna device is proposed according to the embodiment of the first aspect of the utility model, including:

a first antenna assembly, the first antenna assembly is connected to the main board through a first feed point;

a second antenna component, the second antenna component is connected to the main board through a second feed point, wherein the first end of the second antenna component is adjacent to the first end of the first antenna component;

a first inductor, the first end of the first inductor is grounded, and the second end of the first inductor is connected to the first end of the first antenna component; and

A second inductor, the first end of the second inductor is grounded, and the second end of the second inductor is connected to the first end of the second antenna assembly.

The antenna device according to the embodiment of the utility model may also have the following additional technical features:

In one embodiment of the present utility model, also include:

A first matching module connected between the first feed point and the first antenna component.

In one embodiment of the present utility model, also include:

The switch and the second matching module connected between the first end of the first antenna component and the ground are used for spreading the spectrum of the first antenna component.

In one embodiment of the present utility model, also include:

A third antenna component, a camera component is spaced between the third antenna component and the first antenna component, and the third antenna component is connected to the main board through a third feed point.

In one embodiment of the present invention, the first antenna component is a mobile communication antenna, the second antenna component is a WiFi antenna, and the third antenna component is a GPS antenna.

In one embodiment of the present utility model, also include:

A series resonant module connected between the first end of the first antenna component and ground.

In one embodiment of the present invention, the camera assembly is connected to the ground of the main board.

The embodiment of the second aspect of the present invention provides a mobile terminal, including the antenna device of any embodiment of the first aspect of the present invention.

The antenna device and the mobile terminal of the embodiments of the present invention can effectively improve the isolation between adjacent first antenna components and second antenna components, and effectively solve the problem of electromagnetic interference between the antennas.

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

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 is a schematic structural diagram of an antenna device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an antenna device according to another embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a series resonant module according to an embodiment of the present invention.

Main board 100, first antenna assembly 210, first feed point 220, second antenna assembly 310, second feed point 320, first inductor 230, series resonant module 240, third inductor L3, capacitor C1 second inductor 330, second Three antenna assembly 410, third feed point 420, camera assembly 500, camera 510, metal support 520, front camera assembly 530, fingerprint module 600, earphone module 700, first matching module 800, switch 910, second Matching module 920

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

Due to the introduction of some functional modules in the mobile terminal, the available space of the antenna of the mobile terminal will be compressed, and the distance between various antennas of the mobile terminal is small, resulting in problems such as mutual coupling and electromagnetic interference between the antennas, which affect the performance of the antenna. For example, since the fingerprint module is integrated with the home button of the mobile phone, and the earphone module is placed at the bottom, there is less space at the bottom of the mobile phone. Therefore, the LTE antenna, GPS antenna and WiFi antenna of the mobile phone must be set on the top of the mobile phone. As a result, the distance between these antennas is small, even less than 1/2 of the signal wavelength, and the receiving performance of the antennas is affected due to mutual coupling and electromagnetic interference between the antennas.

To solve this problem, the utility model proposes an antenna device and a mobile terminal. An antenna device and a mobile terminal according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of an antenna device according to an embodiment of the present invention.

As shown in FIG. 1, the antenna device according to the embodiment of the present utility model includes: a main board 100, a first antenna assembly 210, a first feed point 220, a second antenna assembly 310, a second feed point 320, a first inductor 230 and The second inductor 330 .

The first antenna assembly 210 is connected to the main board 100 through the first feed point 220 .

The second antenna assembly 310 is connected to the main board 100 through the second feed point 320 , wherein the first end of the second antenna assembly 310 is adjacent to the first end of the first antenna assembly 210 .

A first end of the first inductor 230 is grounded, and a second end of the first inductor 230 is connected to the first end of the first antenna assembly 210 .

A first end of the second inductor 330 is grounded, and a second end of the second inductor 330 is connected to the first end of the second antenna assembly 310 .

According to the antenna device of the embodiment of the present invention, by connecting inductances in series between adjacent first antenna components and second antenna components, and grounding the adjacent first antenna components and second antenna components, the adjacent first antenna components and the second antenna components can be effectively improved. The isolation between the second antenna components can effectively solve the problem of electromagnetic interference between the antennas.

In some embodiments of the present invention, as shown in FIG. 2 , the antenna device may further include: a third antenna component 410 and a third feed point 420 .

A camera assembly 500 is spaced between the third antenna assembly 410 and the first antenna assembly 210 , and the third antenna assembly 410 is connected to the main board 100 through a third feed point 420 .

In an embodiment of the present invention, the camera assembly 500 can be connected to the ground of the main board 100 .

Wherein, the camera assembly 500 may include a camera 510 and a metal support 520 on its back.

In some embodiments of the present utility model, the camera assembly 500 can be grounded by but not limited to pasting conductive cloth, copper foil, and structurally raised metal pockets (such as the metal support 520 shown in FIG. 2 ).

In one embodiment of the present utility model, the aforementioned camera assembly 500 can be a rear camera assembly, and the mobile terminal in this embodiment of the present utility model can also include a front camera assembly located between the first antenna assembly 210 and the second antenna assembly 310 camera assembly 530 . The front camera assembly 530 can be connected to the ground of the motherboard 100 .

Therefore, the isolation between the first antenna component, the second antenna component and the third antenna component can be improved by grounding the front camera component and the rear camera component, and electromagnetic interference among the antenna components can be avoided.

In one embodiment of the present utility model, the first antenna assembly 210 can be a mobile communication antenna, such as an LTE antenna; the second antenna assembly 310 can be a WiFi antenna, such as a 2.4G or 5G WiFi antenna; the third antenna assembly 410 can be GPS antenna.

Therefore, when the fingerprint module 600 and the Home button in the mobile terminal are integrated together, and the earphone module 700 is placed down, the LTE antenna, GPS antenna and WiFi antenna of the mobile terminal are arranged on the top of the mobile phone due to less space at the bottom , even if the distance between the mobile communication antenna, the GPS antenna and the WiFi antenna is short because the camera assembly 500 occupies part of the space, the isolation between adjacent antenna assemblies can be improved by connecting inductors between the antennas , so as to solve the problem of electromagnetic interference between antennas.

It should be noted that the grounding in the embodiment of the present invention may be connected to the reference ground of the whole machine.

In some embodiments of the present invention, as shown in FIG. 2 , the antenna device may further include a first matching module 800 connected between the first feed point 220 and the first antenna assembly 210 .

Wherein, the first matching module 800 may be a matching circuit.

In some embodiments of the present utility model, the antenna device may further include a switch 910 and a second matching module 920 connected between the first end of the first antenna component 210 and the ground, for performing the first antenna component 210 spread spectrum.

In some embodiments of the present invention, the antenna device may further include a series resonant module 240 connected between the first end of the first antenna component 210 and the ground.

Specifically, the series resonance module 240 may include a third inductor L3 and a capacitor C1 as shown in FIG. 3 .

Thereby, the stray signals on the relevant paths (such as LTETx (Transmit, sending) paths) of the first antenna assembly 210 can be effectively filtered through the series resonant module 240 or the interference signals that the main signal falls into the GPS and WiFi bands, further solving the problem of The problem of mutual interference between the various systems caused by insufficient isolation between the secondary antennas in the increasingly compact antenna space.

The utility model also provides a mobile terminal.

A mobile terminal according to an embodiment of the present utility model includes the antenna device of any one of the above-mentioned embodiments of the present utility model.

The mobile terminal of the embodiment of the utility model can effectively improve the isolation between adjacent antenna components, and effectively solve the problem of electromagnetic interference between the antennas.

Other embodiments of the invention will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the utility model, which follow the general principles of the utility model and include common knowledge or common practice in the technical field not disclosed in this disclosure technical means. The specification and examples are to be considered exemplary only, with a true scope and spirit of the invention indicated by the following claims.

It should be understood that the present invention is not limited to the precise structure which has been described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (8)

1. a kind of antenna assembly is it is characterised in that include：

First antenna assembly, described first antenna assembly is connected with mainboard by the first feed point；

Second antenna module, described second antenna module is connected with described mainboard by the second feed point, wherein, described second antenna The first end of assembly is adjacent with the first end of described first antenna assembly；

First inductance, first end ground connection, the second end of described first inductance and the described first antenna assembly of described first inductance First end be connected；And

Second inductance, first end ground connection, the second end of described second inductance and described second antenna module of described second inductance First end be connected.

2. antenna assembly as claimed in claim 1 is it is characterised in that also include：

It is connected to the first matching module between described first feed point and described first antenna assembly.

3. antenna assembly as claimed in claim 1 is it is characterised in that also include：

It is connected to the switch between the first end of described first antenna assembly and ground and the second matching module, for described first Antenna module is spread.

4. antenna assembly as claimed in claim 1 is it is characterised in that also include：

Third antenna assembly, between described third antenna assembly and described first antenna assembly between be separated with CCD camera assembly, described Third antenna assembly is connected with described mainboard by the 3rd feed point.

5. antenna assembly as claimed in claim 4 it is characterised in that described first antenna assembly be mobile communication antenna, institute Stating the second antenna module is WiFi antenna, and described third antenna assembly is gps antenna.

6. antenna assembly as claimed in claim 1 is it is characterised in that also include：

It is connected to the cascade coupled resonator modules between the first end of described first antenna assembly and ground.

7. antenna assembly as claimed in claim 4 is it is characterised in that described CCD camera assembly is connected with the ground of described mainboard.

8. a kind of mobile terminal is it is characterised in that include the antenna assembly as described in any one of claim 1-7.