CN211088501U

CN211088501U - Antenna assembly and electronic equipment

Info

Publication number: CN211088501U
Application number: CN201921927211.4U
Authority: CN
Inventors: 姚坤
Original assignee: Realme Chongqing Mobile Communications Co Ltd
Current assignee: Realme Chongqing Mobile Communications Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-24
Anticipated expiration: 2029-11-08

Abstract

The utility model provides an antenna module and electronic equipment. Wherein, antenna module includes: antenna body and fall radiation antenna. One end of the antenna body is electrically connected with a signal source, and the other end of the antenna body is electrically connected with a reference ground to form a closed loop. The radiation reducing antenna is arranged on one side of the antenna body, is coupled with the antenna body and is used for reducing the radiation value of the antenna assembly, and one end of the radiation reducing antenna is electrically connected with the reference ground to form an open-circuit ring. Therefore, the overall quality factor of the antenna assembly is improved through the radiation reduction antenna, and the frequency of the radiation reduction antenna covers the frequency band with the SAR value exceeding the standard of the antenna assembly. Through improving the quality factor, the radiation energy of antenna body has been dispersed to the reducing antenna for the holistic SAR value of antenna module reduces, simultaneously because the holistic radiation energy of antenna module does not reduce, so its radiation performance can not receive too much influence, can not reduce along with the reduction of SAR value together, just so guaranteed electronic equipment's signal quality.

Description

Antenna assembly and electronic equipment

Technical Field

The utility model relates to the field of communication technology, in particular to antenna module and electronic equipment.

Background

At present, due to the addition of various components and various limited design schemes, the antenna headroom in electronic equipment on the market is smaller and smaller, and thus a larger antenna area needs to be designed to expand the band bandwidth so as to meet the design index, however, the radiation area of the antenna is too large, the radiation is inevitably increased, and the problem that the Specific Absorption Rate (SAR) value exceeds the standard is also often accompanied. At present, the radiation performance of the antenna is also reduced by methods for reducing the SAR value in the related art, so that the signal quality of the electronic device is reduced, and the use experience of a user is directly influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the technical problem that the SAR value that reduces the antenna among the prior art can lead to its radiation performance together to descend.

In order to solve the technical problem, the utility model adopts the following technical scheme:

according to an aspect of the present invention, the utility model provides an antenna module, include

The antenna comprises an antenna body, a signal source, a reference ground and a reference ground, wherein one end of the antenna body is electrically connected with the signal source, and the other end of the antenna body is electrically connected with the reference ground to form a closed loop; and the number of the first and second groups,

the radiation reducing antenna is arranged on one side of the antenna body, coupled with the antenna body and used for reducing the radiation value of the antenna assembly, and one end of the radiation reducing antenna is electrically connected with the reference ground to form an open-circuit loop.

According to another aspect of the present invention, the present invention also provides an electronic device, including:

an antenna assembly as described above;

the antenna body is integrated on the antenna bracket.

According to the above technical scheme, the utility model discloses following advantage and positive effect have at least:

the utility model discloses in, set up one through one side at the antenna body and fall the radiation antenna, with antenna body coupling, through fall the radiation antenna and improve the holistic figure of merit of antenna module, and make fall the frequency coverage of radiation antenna the frequency channel that antenna module SAR value exceeds standard, like this, because the improvement of figure of merit, fall the radiation energy that the radiation antenna has disperseed the antenna body for the holistic SAR value of antenna module reduces, simultaneously because the holistic radiation energy of antenna module does not reduce, so its radiation performance can not receive too much influence, can not reduce along with the reduction of SAR value together, just so guaranteed electronic equipment's signal quality.

Drawings

Fig. 1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a reduced-radiation antenna configuration according to the antenna assembly shown in FIG. 1;

FIG. 3 is a schematic structural diagram of an antenna body of the electronic device shown in FIG. 1;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure;

FIG. 5 is a schematic diagram of a portion of the electronic device shown in FIG. 4;

fig. 6 is a schematic view of a part of the structure of the electronic device shown in fig. 4.

Detailed Description

While the present invention may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to that as illustrated herein.

Thus, a feature indicated in this specification will serve to explain one of the features of an embodiment of the invention, and not to imply that every embodiment of the invention must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the invention not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

Some embodiments of the invention are further elaborated below with reference to the drawings of the present description. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, an antenna assembly 10 is provided. The antenna assembly 10 includes an antenna body 11, a derricking antenna 12, a signal source 80, and a reference ground 90. One end of the antenna body 11 is electrically connected to the antenna signal source 80, and the other end is electrically connected to the reference ground 90, forming a closed loop. The radiation reducing antenna 12 is coupled to the antenna body 11 at one side of the antenna body 11 for reducing the radiation value of the antenna assembly 10, and one end of the radiation reducing antenna 12 is electrically connected to the reference ground 90 to form an open loop.

In the production test process, the antenna assembly 10 has a wider frequency range, the exceeding of the SAR value of the antenna assembly 10 generally only occurs in a part of frequency bands but not in all frequency bands, in this embodiment, the radiation energy of the antenna assembly 11 can be dispersed by using the radiation reduction antenna 12 with a higher quality factor value to enable the frequency to cover the SAR value exceeding frequency band of the antenna body 11, and resonance is formed in the SAR value exceeding frequency band, so that the SAR value of the antenna assembly as a whole is reduced, and meanwhile, because the radiation energy of the antenna assembly 10 as a whole is not reduced, the radiation performance is not affected too much and is not reduced along with the reduction of the SAR value, so that the signal quality of the electronic equipment is ensured.

Referring to fig. 2, the reducing antenna 12 includes a long monopole antenna 121 and a short monopole antenna 122. The ratio of the lengths of the long monopole antenna 121 and the short monopole antenna 122 is in the interval 5 to 10, so as to improve the quality factor of the whole antenna assembly 10 and reduce the radiation value of the antenna assembly 10.

In one embodiment of the present invention, when the length ratio of the long monopole antenna 121 to the short monopole antenna 122 of the radiation reducing antenna 12 is 5-10, the quality factor is just between 46-60J, and can cover L TE-B3 frequency band.

It can be understood that, in the above embodiment, an inductor 15 is also connected in series between the radiation reducing antenna 12 and the reference ground 90, and the inductor 15 can further adjust the quality factor of the radiation reducing antenna 12. In the actual production process, because the specifications of the amplitude-reducing antenna 12 are different, and there may be some errors after the length ratio of the long monopole antenna 121 to the short monopole antenna 122 is adjusted in the interval 5 to 10, in this embodiment, an inductor 15 is further added to correct the errors, so that the amplitude-reducing antenna 12 can more accurately cover the frequency band with the SAR value exceeding the standard under the condition that the quality factor is still any value between 46 and 60J. In one embodiment of the present invention, the inductive reactance of the inductor is 3nH-5.2 nH.

It is understood that in the above embodiment, a capacitor 16 is further connected in series between the radiation reducing antenna 12 and the reference ground 90, and the capacitor 16 can further adjust the quality factor of the radiation reducing antenna 12. In the actual production process, due to the difference in the specifications of the amplitude reducing antenna 12, there may be some errors after the length ratio of the long monopole antenna 121 to the short monopole antenna 122 is adjusted in the interval 5 to 10, so in this embodiment, a capacitor 16 is further added to correct the errors, and under the condition that the quality factor is still an arbitrary value between 46J and 60J, the amplitude reducing antenna 12 can more accurately cover the frequency band with the SAR value exceeding the standard. In one embodiment of the present invention, the inductive reactance of the inductor is 0.5pF-1.2 pF.

It will be appreciated that the antenna assembly 10 may also include a feed point and a feed point. The antenna body 11 is electrically connected to the reference ground 90 through a feed point, electrically connected to the signal source 80 through a feed point, and bent from the feed point to the feed point for multiple times to form a closed loop.

Referring to fig. 3, the antenna body 11 may include: the first branch portion 111, the first bending portion 116, the second branch portion 112, the second bending portion 117, the third branch portion 113, the third bending portion 118, the fourth branch portion 114, and the fourth bending portion 119.

The first branch portion 111 is electrically connected to the reference ground 90 through a feeding point, extends from the feeding point away from the feeding point, and then bends back to form a first bending portion 116. The first bending portion 116 extends away from the extending direction of the first branch portion 111 to form a second branch portion 112. The second branch portion 112 bends toward the first branch portion 111 and then bends away from the extending direction of the first branch portion 111 to form a second bending portion 117. The second bending portion 117 extends away from the extending direction of the first branch portion 111 to form a third branch portion 113. The third branch portion 113 is bent back to form a third bending portion 118. The third bending portion 118 extends away from the extending direction of the third branch portion 113 to form a fourth branch portion 114. The fourth branch portion 114 bends and extends toward the feeding point to form a fourth bending portion 119. The fourth bending portion 119 is electrically connected to the signal source 80 through the feeding point, so that the antenna body 10 can form a closed loop.

The antenna body 11 forms an annular antenna coil through the structure of the multiple bending and extending, and the occupied area of the antenna body 11 is smaller due to the multiple bending and extending of the antenna body 11. It is understood that in one embodiment of the present invention, the distance between the first branch portion 111 and the second branch portion 112 may be smaller than the distance between the third branch portion 111 and the fourth branch portion 112. It is understood that, in an embodiment of the present invention, a distance between the first branch portion 111 and the second bent portion 117 may be smaller than a distance between the fourth bent portion 119 and the second bent portion 117.

The present disclosure also provides an electronic device, please refer to fig. 4 to 6, which includes an antenna bracket 20, a main board 60, a middle frame 80 and an antenna dome, in addition to the antenna assembly 10 described above.

The main board 60 is fixed to one side of the middle frame 80, and the antenna bracket 20 is covered on the main board 60 and is connected to the middle frame 80. The antenna body 11 is disposed on a surface of the antenna bracket 20 facing the main board 60, and the radiation reducing antenna 12 is disposed on a surface of the main board 60 facing the antenna bracket 20.

It is understood that the antenna body 11 may be a laser Direct Structuring (L ase Direct Structuring, L DS) antenna, which may be directly engraved on the antenna holder 20 using L DS.

The side of the main board 40 facing the antenna support 20 is further integrated with a feeding point and a ground point, the feeding point is electrically connected to the antenna signal source 80, and the ground point is electrically connected to the reference ground 90. Thus, the antenna body 11 is respectively contacted with the feeding point and the feeding point through a plurality of antenna shrapnels, and is electrically connected with the antenna signal source 80 and the reference ground 90.

It is understood that the inductor 15 and the capacitor 16 may also be integrated on the side of the main board 60 facing the antenna support 20, as the radiation-reducing antenna 12, so that the radiation-reducing antenna 12 can pass through the inductor 15 and the capacitor 16 and then be electrically connected to the ground reference 90 to form a parasitic branch.

It can be understood that, in some design scenarios, the area of the antenna clearance area is too small due to the design of the internal functional units and the external appearance dimensions of the electronic device, and it is very likely that the space on the antenna support 20 is not enough to integrate the radiation reducing antenna 12, and at this time, by adopting the above scheme, the radiation reducing antenna 12 is integrated on the main board 40, so that it is possible to avoid the situation that the space on the antenna support 20 is not enough to integrate the radiation reducing antenna 12, which results in that the radiation reducing antenna 12 cannot be arranged. It can be understood that the antenna body 11 may be disposed on a projection area of the main board 40, so that the distance from the radiation reducing antenna 12 to the antenna body 11 is specifically shorter, and a better coupling effect is achieved, so that a signal of the electronic device is not attenuated.

It is understood that the antenna mount 20 has sufficient space for the reduced radiation antenna 12, and the reduced radiation antenna 12 may be integrated with the antenna mount 20. The feed point includes a first feed point and a second feed point, and the antenna body 11 is in contact with the first feed point through an antenna spring, so as to realize electrical connection with the reference ground 90. The radiation reducing antenna 12 is in contact with the second feed point through another antenna spring, and is electrically connected with the reference ground 90. An inductor 15 and a capacitor 16 integrated on the main board 40 are also connected in series between the second feed point and the reference ground 90.

When the antenna support 20 has enough space for integrating the radiation reducing antenna 12, the distance from the radiation reducing antenna 12 to the antenna body 11 can be shortened by integrating the radiation reducing antenna 12 on the antenna support 20, so that the signal of the antenna assembly 10 can be improved. Meanwhile, the radiation reduction antenna 12 and the antenna body 11 are integrated on the antenna support 20, so that only debugging on the antenna support 20 is needed in the debugging process, and the debugging program is simplified.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An antenna assembly, comprising:

2. The antenna assembly of claim 1, wherein the reduced radiation antenna comprises a long monopole antenna and a short monopole antenna, and wherein the length ratio of the long monopole antenna to the short monopole antenna is in the interval 5 to 10 to improve the quality factor and reduce the radiation value of the antenna assembly.

3. The antenna assembly of claim 1, wherein an inductor is further connected in series between the derricking antenna and the reference ground, and the inductor is used for adjusting the quality factor of the derricking antenna.

4. The antenna assembly of claim 3, wherein a capacitor is further connected in series between the derricking antenna and the reference ground, the capacitor being used to adjust a quality factor of the derricking antenna.

5. The antenna assembly of claim 1, further comprising a feed point and a feed point, wherein the antenna body is electrically connected to the reference ground via the feed point, is electrically connected to the signal source via the feed point, and is bent from the feed point to the feed point a plurality of times to form a closed loop.

6. The antenna assembly of claim 5, wherein the antenna body comprises:

a first branch portion electrically connected to the reference ground through the feedpoint and extending from the feedpoint away from the feedpoint direction;

the first bending part is formed by bending and extending the first branch part;

the second branch part is formed by extending the first bending part away from the extending direction of the first branch part;

the second bending part is formed by bending the second branch part towards the first branch part and then bending the second branch part away from the extending direction of the first branch part;

the third branch part is formed by extending the second bending part away from the extending direction of the first branch part;

the third bending part is formed by bending and extending the third branch part;

the fourth branch part is formed by extending the third bending part away from the extending direction of the third branch part; and the number of the first and second groups,

and the fourth bending part is formed by bending and extending the fourth branch part to the feed point, and the fourth bending part is electrically connected with the signal source through the feed point.

7. An electronic device, comprising:

an antenna assembly as claimed in any one of claims 1 to 6;

the antenna body is integrated on the antenna bracket.

8. The electronic device of claim 7, wherein the de-radiating antenna is also integrated on the antenna mount.

9. The electronic device of claim 7, further comprising an antenna spring and a motherboard, wherein a feeding point and a feeding point of the electronic device are integrated on the motherboard, and the antenna spring electrically connects the antenna body with the feeding point and the feeding point, respectively.

10. The electronic device of claim 9, wherein the de-radiating antenna is also integrated on the motherboard.

11. The electronic device of claim 10, further comprising:

the center, the mainboard is fixed in on the center, the antenna boom cover is located on the mainboard, and with center fixed connection, the antenna body is located the antenna boom towards the one side of mainboard, fall the spoke antenna and locate the mainboard towards the one side of antenna boom.