CN106785432B

CN106785432B - Antenna device of mobile terminal and mobile terminal

Info

Publication number: CN106785432B
Application number: CN201611237642.9A
Authority: CN
Inventors: 赵宁; 唐海军; 刘国林; 胡莎莎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2023-01-31
Anticipated expiration: 2036-12-28
Also published as: CN106785432A

Abstract

The invention discloses a mobile terminal and an antenna device thereof. Wherein, this antenna device can include: the mobile terminal comprises a housing of the mobile terminal, a micro-slit, a first antenna and a second antenna, wherein the micro-slit is arranged on the housing of the mobile terminal and divides the housing into a first part and a second part; a connecting assembly for connecting the first and second parts; the first capacitor is connected between the micro-slit and the feed point; and a matching component connected between the micro-slit and the feed point. Therefore, effective radiation or electromagnetic signal receiving of the antenna can be guaranteed when the shell is an all-metal shell, the purpose of the three-in-one antenna can be achieved through single feed and the matching network, and the strength of antenna communication signals is improved.

Description

Antenna device of mobile terminal and mobile terminal

Technical Field

The present invention relates to the field of mobile terminal manufacturing technologies, and in particular, to an antenna device of a mobile terminal and a mobile terminal having the same.

Background

With the rapid development of mobile communication technology, mobile terminals (particularly mobile phones) have developed various forms and materials, and particularly in recent years, it has become mainstream to set a battery rear cover of a mobile terminal to be a metal material. This is because the metal case can make the mobile terminal more beautiful and beautiful in appearance and better in hand feeling, and the metal case is more wear-resistant than a case mobile terminal made of plastic such as PC (Polycarbonate) or ABS (Acrylonitrile butadiene Styrene copolymer).

At present, the main types of antennas of mobile terminals (especially mobile phones) are PIFA (Planar Inverted-F Antenna), IFA (Inverted-F Antenna), monopole Antenna, loop Antenna, etc., however, these types of antennas are used in mobile terminals with metal casing, and cannot effectively radiate or receive electromagnetic signals, so that the frequency range that the mobile terminal can implement is limited, and the communication signals are seriously affected.

Disclosure of Invention

The object of the present invention is to solve at least to some extent one of the technical problems of the above-mentioned technology.

To this end, a first object of the present invention is to provide an antenna device for a mobile terminal. The antenna device can ensure effective radiation or electromagnetic signal reception of the antenna when the shell is an all-metal shell, can realize the purpose of a three-in-one antenna through single feed and a matching network, and improves the strength of antenna communication signals.

A second objective of the present invention is to provide a mobile terminal.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides an antenna apparatus for a mobile terminal, including: the micro-slot antenna comprises a micro-slot, a first antenna and a second antenna, wherein the micro-slot is arranged on a shell of the mobile terminal and divides the shell into a first part and a second part, and the micro-slot is connected with a main board of the mobile terminal through a feed point to form the micro-slot antenna; a connection assembly for connecting the first and second portions; a first capacitor connected between the micro-slit and the feed point; and a matching component connected between the micro-slit and the feed point.

According to the antenna device of the mobile terminal, the micro-slot is arranged on the shell of the mobile terminal, the shell is divided into the first part and the second part by the micro-slot, the micro-slot is connected with the main board of the mobile terminal through the feeding point to form the micro-slot antenna, the first part and the second part are connected through the connecting component, the first capacitor is connected between the micro-slot and the feeding point, and the matching component is connected between the micro-slot and the feeding point. Utilize the structure of slit promptly for also can guarantee the effective radiation of antenna or receive electromagnetic signal when the shell is all metal casing, and can realize the purpose of trinity antenna through single feed and matching network, and improved antenna communication signal's intensity.

In addition, the antenna device of the mobile terminal according to the above embodiment of the present invention may further have the following additional technical features:

the micro-slit antenna covers a frequency range of 2.4-2.48GHz/5.1-5.85GHz to form a WIFI communication antenna, and the matching component is used for adjusting the micro-slit antenna to a frequency range of 1.5-1.6GHz to form a GPS antenna.

The micro-seam is a C-shaped micro-seam or a U-shaped micro-seam.

Wherein the micro-slit comprises: a straight line segment; and the first bending section and the second bending section are connected to two ends of the straight section.

Wherein the mobile terminal comprises a camera assembly, wherein the feed point is disposed between the camera assembly and the first curved section.

The camera assembly is connected with the connecting assembly through the elastic piece assembly.

The matching assembly comprises: a second capacitor; a first inductor in series with the second capacitor.

The connecting component is a metal connecting sheet.

The connecting assembly is connected with the first part and the second part in a laser electric welding mode.

The number of the connecting components is 1-4.

In order to achieve the above object, a second embodiment of the present invention provides a mobile terminal, including: the antenna device according to the embodiment of the first aspect of the invention.

According to the mobile terminal of the embodiment of the invention, the micro-slot is arranged on the shell of the mobile terminal in the antenna device, the shell is divided into the first part and the second part by the micro-slot, the micro-slot is connected with the main board of the mobile terminal through the feeding point to form the micro-slot antenna, the first part and the second part are connected through the connecting component, the first capacitor is connected between the micro-slot and the feeding point, and the matching component is connected between the micro-slot and the feeding point. The structure of utilizing the micro-crack promptly for also can guarantee the effective radiation of antenna or receive electromagnetic signal when the shell is all metal casing, and can realize the purpose of trinity antenna through single feed and matching network, and improved antenna communication signal's intensity.

Additional aspects and advantages of the invention 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 the invention.

Drawings

The above and/or additional aspects and advantages of the present invention 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 structural diagram of an antenna apparatus of a mobile terminal according to one embodiment of the present invention;

fig. 2 is a schematic structural diagram of an antenna apparatus of a mobile terminal according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of an antenna apparatus of a mobile terminal according to still another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Reference numerals:

10: a mobile terminal; 100: micro-sewing; 111: a straight line segment; 112: a first curved section; 113: a second curved section; 11: a housing; 11A: a first portion of the housing; 11B: a second portion of the housing; 12: a feeding point; 13: a camera assembly; 200: a connecting assembly; 300: a first capacitor; 400: a matching component; 500: a spring plate assembly; 20: an antenna device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, 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 with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

An antenna device of a mobile terminal and a mobile terminal having the same according to embodiments of the present invention are described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an antenna device of a mobile terminal according to an embodiment of the present invention. It should be noted that the antenna device according to the embodiments of the present invention may be configured in a mobile terminal. The mobile terminal may be a mobile phone, a tablet computer, or the like, and preferably, the mobile terminal is a mobile phone.

As shown in fig. 1, the antenna apparatus of the mobile terminal may include: micro-crack 100, connection component 200, first capacitor 300, and matching component 400. As shown in fig. 1, a micro-slot 100 is disposed on a housing 11 of a mobile terminal 10, the housing 11 is divided into a first portion 11A and a second portion 11B by the micro-slot 100, and the micro-slot 100 is connected to a main board of the mobile terminal 10 through a feeding point 12 to form a micro-slot antenna, that is, the micro-slot antenna may be composed of a micro-slot, a feeding point and a connection manner thereof. The connection assembly 200 may be used to connect the first portion 11A and the second portion 11B. A first capacitor 300 is connected between the micro-slit 100 and the feed point 12. A matching component 400 is connected between the micro-slot 100 and the feed point 12.

It is understood that, in order to improve the radiation efficiency of the antenna device and the mobile terminal, the number of the micro-slots 100 may be two in the embodiment of the present invention. For example, as shown in fig. 1, a micro-slit may be cut respectively above and below the housing 11 of the mobile terminal 10, and the micro-slit may be used as the micro-slit 100. The number of slits in each micro slit 100 may be plural, for example, as shown in fig. 1, the number of slits in each micro slit 100 may be two. It is understood that the number of the slits may be set according to actual requirements, and is not limited specifically herein. In addition, the inside of the micro-gap in the micro-gap 100 can be filled with plastic to connect the upper and lower parts of the housing.

As shown in fig. 1, the micro-slit 100 above the housing 11 divides the housing 11 into two parts, namely a first part 11A and a second part 11B, and the first part 11A and the second part 11B can be connected by a connecting assembly 200 to connect the upper and lower parts of the housing.

It should be noted that, in the embodiment of the present invention, the housing 11 of the mobile terminal 10 may be an all-metal housing. It can be seen that the connection assembly 200 can be a metal tab, as one example. The connection assembly 200 may be connected to the first portion 11A and the second portion 11B by laser welding. That is, the connection assembly 200 may be connected to the first and

second portions

11A and 11B by laser welding to achieve the connection of the upper and lower metals.

It is understood that the number and the position of the connecting elements 200 can be determined according to actual debugging conditions. It should be noted that, in one embodiment of the present invention, the number of the connecting components 200 may be 1 to 4. For example, as shown in fig. 1, 3 connecting assemblies 200 are shown, and each connecting assembly 200 is located at a different position, and each connecting assembly 200 is connected to the first portion 11A and the second portion 11B by means of laser welding.

Preferably, in the embodiment of the present invention, the feeding point 12 may be located between the micro-slot 100 and the main board, and the feeding point 12 may be a GPS/WIFI feed source, so that the GPS/WIFI feed source feeds the upper end of the micro-slot 100 through the first capacitor 300 to form a micro-slot antenna. In the embodiment of the present invention, the micro-slot antenna may cover a frequency range of 2.4-2.48GHz/5.1-5.85GHz to form a WIFI communication antenna, and the matching component 400 may be configured to adjust the micro-slot antenna to a frequency range of 1.5-1.6GHz to form a GPS antenna.

Specifically, this feed point 12 can be the feed of GPS/WIFI for the GPS/WIFI feed feeds the upper end of micro-gap 100 through first electric capacity 300 in order to form the micro-gap antenna, and wherein, the capacitance value scope of this first electric capacity 300 can be 0.5pF ~ 2pF. Therefore, the micro-slot antenna can cover the frequency range of 2.4-2.48GHz/5.1-5.85GHz to form the WIFI communication antenna. And the micro-slot antenna can be tuned to a frequency range of 1.5-1.6GHz by the matching component 400 to form a GPS antenna. Therefore, the purpose of the three-in-one antenna can be realized in a limited space.

As an example, the matching component 400 may include a second capacitance and a first inductance. Wherein, the first inductor is connected with the second capacitor in series. That is, the matching component 400 can be a series resonance in which a second capacitor is connected in series with a first inductor. It is understood that the specific values of the second capacitor and the first inductor in the matching component 400 can be determined according to practical debugging conditions. Therefore, the micro-slot antenna can be adjusted to a corresponding frequency range through the matching component so as to form an antenna meeting the requirement.

In order to beautify the appearance of the mobile terminal, preferably, in one embodiment of the present invention, the micro-slit 100 may be a C-shaped micro-slit or a U-shaped micro-slit. Among others, in an embodiment of the present invention, as shown in fig. 2, the micro slit may include: a straight section 111, a first curved section 112 and a second curved section 113. Wherein a first curved section 112 and a second curved section 113 are connected at both ends of the straight section 111.

For example, as shown in fig. 2, the micro-slit may be composed of three segments, i.e., a straight segment 111, a first bending segment 112 and a second bending segment 113, i.e., the portion of the micro-slit in the horizontal direction may be the straight segment 111, and for the micro-slit shown in fig. 2, the left portion of the straight segment 111 may be the first bending segment 112, and the right portion of the straight segment 111 may be the second bending segment 113. Based on the appearance of the C-shaped or U-shaped micro-slit, the 2.4 GWIFII/5G WIFI and GPS antenna performance is realized by utilizing the micro-slit structure and through a single feed and matching network.

In one embodiment of the present invention, in the case where the micro-slit includes a straight section, a first curved section, and a second curved section, as shown in fig. 3, the mobile terminal 10 may include a camera assembly 13, wherein the feeding point 12 is disposed between the camera assembly 13 and the first curved section 112.

For example, for convenience of a user to photograph through a camera assembly located at the mobile terminal, as shown in fig. 3, the camera assembly 13 may be located above the mobile terminal, and the camera assembly 13 may be a dual camera, wherein the camera assembly 13 may be disposed near the first bending section 112, such as the camera assembly 13 is disposed at the right side of the first bending section 112 and the feeding point 12, such that the feeding point 12 is disposed between the camera assembly 13 and the first bending section 112.

In order to enable the camera assembly to be fixed, in an embodiment of the present invention, as shown in fig. 3, the antenna device may further include: the dome assembly 500. The camera assembly 13 may be connected to the connecting assembly 200 through the spring assembly 500.

For example, as shown in fig. 3, the number of the elastic sheet assemblies 500 may be two, and the two elastic sheet assemblies 500 are respectively located at two ends of the camera assembly 13, and the camera assembly 13 may be connected to the connecting assembly 200 through the elastic sheet assemblies 500 at the two ends, and the elastic sheet assembly 500 is grounded, so that the camera assembly 13 is fixed through the elastic sheet assembly 500, and the camera assembly 13 is grounded, thereby avoiding the influence of the camera assembly 13 on the antenna radiation.

According to the antenna device of the mobile terminal, the micro-slot is arranged on the shell of the mobile terminal, the shell is divided into the first part and the second part by the micro-slot, the micro-slot is connected with the main board of the mobile terminal through the feeding point to form the micro-slot antenna, the first part and the second part are connected through the connecting component, the first capacitor is connected between the micro-slot and the feeding point, and the matching component is connected between the micro-slot and the feeding point. The structure of utilizing the micro-crack promptly for also can guarantee the effective radiation of antenna or receive electromagnetic signal when the shell is all metal casing, and can realize the purpose of trinity antenna through single feed and matching network, and improved antenna communication signal's intensity.

In order to implement the above embodiments, the present invention further provides a mobile terminal.

Fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention. It should be noted that the mobile terminal according to the embodiment of the present invention may be a mobile phone, a tablet computer, and the like, and preferably, the mobile terminal may be a mobile phone.

As shown in fig. 4, the mobile terminal 10 may include: an antenna device 20. The antenna device 20 may be the antenna device according to any of the above embodiments of the present invention, that is, the detailed structure and function description of the antenna device 20 may refer to the description of the antenna device according to any of the above embodiments of fig. 1 to 3, and are not repeated herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An antenna device of a mobile terminal, comprising:

the micro-slot antenna comprises a micro-slot, a first antenna and a second antenna, wherein the micro-slot is arranged on a shell of the mobile terminal and divides the shell into a first part and a second part, and the micro-slot is connected with a main board of the mobile terminal through a feed point to form the micro-slot antenna;

wherein the shell of the mobile terminal is constructed as an all-metal shell;

a connection assembly for connecting the first and second portions;

a first capacitor connected between the micro-slit and the feed point; and

a matching component connected between the micro-slit and the feed point;

wherein the micro-slit comprises: a straight line segment;

the first bending section and the second bending section are connected to two ends of the straight section;

wherein the mobile terminal comprises a camera assembly, wherein the feed point is disposed between the camera assembly and the first curved section;

2. The antenna device of claim 1, wherein the micro-slot antenna covers a frequency range of 2.4-2.48GHz/5.1-5.85GHz to form a WIFI communication antenna, and the matching component is configured to tune the micro-slot antenna to a frequency range of 1.5-1.6GHz to form a GPS antenna.

3. The antenna device of claim 1, wherein the micro-slit is a C-shaped micro-slit or a U-shaped micro-slit.

4. The antenna apparatus of the mobile terminal of claim 1, wherein the matching component comprises:

a second capacitor;

a first inductor in series with the second capacitor.

5. The antenna device of claim 1, wherein the connecting member is a metal connecting plate.

6. The antenna assembly of claim 5, wherein the connection assembly is connected to the first and second portions by laser welding.

7. The antenna device of claim 5, wherein the connection assemblies are 1~4.

8. A mobile terminal, comprising: an antenna device as claimed in any one of claims 1 to 7.