CN216903320U

CN216903320U - Antenna structure and electronic device

Info

Publication number: CN216903320U
Application number: CN202220294907.3U
Authority: CN
Inventors: 杨君宇; 罗文皓
Original assignee: Chengdu Lianzhou International Technology Co ltd
Current assignee: Chengdu Lianzhou International Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-07-05
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses an antenna structure and an electronic device, comprising a shell and at least two antenna bodies; the shell is internally provided with a cavity, and one side of the cavity is provided with an opening communicated with the outside; the other side of the cavity is attached with the antenna body; each antenna body is provided with a plurality of contact parts, and the contact parts are in contact with the radio frequency main board inserted into the opening to realize electrical connection. According to the antenna structure and the electronic device provided by the embodiment of the utility model, the antenna body is conformal with the shell, so that the integration level of a product is improved, the size space of the antenna product is reduced, and the assembly process of the antenna product is reduced.

Description

Antenna structure and electronic device

Technical Field

The present invention relates to the field of antenna technologies, and in particular, to an antenna structure and an electronic device.

Background

With the continuous development of science and technology, the trend of portability and miniaturization of electronic devices is increasing. At present, the size of the antenna structure is large, for example, the length and the thickness of the shell part of most AC 1300-sized mesh cards on the market are larger than 10mm, the antenna structure is bulky in appearance and is not suitable for being used on a light and thin notebook, some network cards with overlarge thickness can even tilt the notebook, and the use experience of a user is reduced. In addition, most network card antennas on the market are of independent structures, need to be welded to a main board, and are multiple in assembly procedures and complex in operation.

SUMMERY OF THE UTILITY MODEL

The antenna body is conformal with the shell, so that the integration level of a product is improved, the size space of the antenna product is reduced, and the assembly procedures of the antenna product are reduced.

In order to solve the above technical problem, an embodiment of the present invention provides an antenna structure, including a housing and at least two antenna bodies;

the shell is internally provided with a cavity, and one side of the cavity is provided with an opening communicated with the outside;

the other side of the cavity is attached with the antenna body;

each antenna body is provided with a plurality of contact parts, and the contact parts are in contact with the radio frequency main board inserted into the opening to realize electrical connection.

As one of preferable schemes, the antenna body comprises a first antenna body and a second antenna body;

the first antenna body is in the Pifa form;

the second antenna body is in the form of a monopole.

As one preferable scheme, a first feeding contact part and a first grounding contact part are arranged on the first antenna body; and a second feeding contact part is arranged on the second antenna body.

Preferably, the first feeding contact, the first grounding contact and the first grounding contact are located on the same plane and are arranged in parallel.

As one preferable scheme, the shell is made of ABS material.

Another embodiment of the present invention provides an electronic device, which includes a radio frequency main board and the antenna structure as described above.

As one preferable scheme, a contact corresponding to the contact portion is arranged on the radio frequency main board, and the antenna structure is electrically connected through the contact between the contact portion and the contact.

As one preferable scheme, the contact piece is a metal elastic piece.

As one preferable scheme, the metal elastic sheet is made of any one of copper, aluminum, iron and silver.

As one preferable scheme, the metal elastic sheet includes a first antenna feeding elastic sheet, a first antenna grounding elastic sheet and a second antenna feeding elastic sheet.

Compared with the prior art, the antenna body is arranged in the shell, so that the integration level of a product is improved while normal communication of the antenna is guaranteed, the size of the product is reduced, the antenna body and the shell are conformal, in addition, the antenna body is electrically connected with the radio frequency main board through contact, the antenna product is free of deformation risk, meanwhile, the assembling procedures and errors are reduced, and the adaptability and consistency of the antenna product and an electronic device are improved.

Drawings

Fig. 1 is a schematic structural diagram of an antenna structure in one embodiment of the present invention;

FIG. 2 is a top view of an antenna structure in one embodiment of the utility model;

fig. 3 is an expanded view of the antenna body in one embodiment of the present invention;

FIG. 4 is a first antenna return loss curve in one embodiment of the present invention;

FIG. 5 is a second antenna return loss curve in one embodiment of the present invention;

FIG. 6 illustrates the isolation of the first antenna from the second antenna in one embodiment of the present invention;

FIG. 7 is a graph of the first antenna 2.4G antenna efficiency in one embodiment of the present invention;

FIG. 8 is a first antenna 5G antenna efficiency in one embodiment of the present invention;

FIG. 9 is a second antenna 2.4G antenna efficiency in one embodiment of the present invention;

FIG. 10 shows the second antenna 5G antenna efficiency in one embodiment of the present invention;

reference numerals:

wherein, 1, a shell; 2. a first antenna body; 3. a second antenna body; 4. a radio frequency main board; 5. a first feeding contact; 6. a first ground contact; 7. a second feed contact.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

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; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must be in a particular orientation, constructed or operated in a particular manner, and is not to be construed as limiting the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

In the description of the present application, it is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model, as those skilled in the art will recognize the specific meaning of the terms used in the present application in a particular context.

An embodiment of the present invention provides an antenna structure, and specifically, please refer to fig. 1, where fig. 1 is a schematic structural diagram of an antenna structure in an embodiment of the present invention, where the antenna structure includes a housing 1 and at least two antenna bodies (shown as an internal first antenna body 2 and a first antenna body 3); a cavity is formed in the shell 1, and an opening communicated with the outside is formed in one side of the cavity; the other side of the cavity is attached with the antenna body; each antenna body is provided with a plurality of contact parts, and the contact parts are in contact with the radio frequency main board 4 inserted into the opening to realize electrical connection.

It should be noted that the antenna structure provided by the utility model is suitable for a two-way and two-frequency wireless network card antenna of 802.11 ac. The wireless network card is a terminal wireless network device, and can realize network connection of the device through wireless connection under the coverage of a wireless local area network. In this embodiment, an LDS process is adopted, and two or more dual-frequency antennas are printed in a housing with a size of about 16 × 8 × 7mm, so as to realize a miniaturized design. The LDS process is a laser direct structuring technology, which refers to a technology for directly transferring a circuit pattern onto the surface of a molded plastic element by using a numerical control laser and forming a circuit interconnection structure by using the three-dimensional surface of a three-dimensional workpiece.

As described above, the antenna body in this embodiment is disposed in the housing, conformal with the housing, and connected to the rf motherboard through the contact portion, and is simple to assemble and good in consistency.

In one preferred embodiment of the present invention, the number of the antenna bodies is two, including the first antenna body 2 and the second antenna body 3; the two antennas respectively adopt a Pifa form (a planar inverted F-shaped antenna) and a monopole form, space utilization rate is maximized, and isolation between the two antennas is improved. Of course, the pattern of the antenna body needs to be designed in combination with the actual product design requirements, so that the antenna isolation and the antenna efficiency are further improved, and further description is omitted here.

The antenna in the above embodiment is in AC1300 specification, supports 802.11AC protocol, and works with two channels of dual frequency, 2.4G peak rate 400Mbps and 5G peak rate 867 Mbps. Most AC1300 grid mesh card casing part length, thickness are greater than 10mm on the market, realize two way antenna's design under the small-size and have the difficulty, and because the form of antenna adoption metal plug-in components, lead to being difficult to reach the working property of the antenna in this embodiment.

For the assembly of the antenna, most network card antennas on the market are of independent structures and need to be welded on a mainboard, so that the assembly process is multiple, and the operation is complex. In this embodiment, the electrical connection between the antenna body and the rf motherboard 4 is realized by using the contact portion on the antenna body, which simplifies the assembly process.

Specifically, referring to fig. 2, fig. 2 is a top view of the antenna structure in the embodiment of the present invention, wherein a first feeding contact 5 and a first grounding contact 6 are disposed on the first antenna body 2; the second antenna body 3 is provided with a second feed contact 7. The first feeding contact 5, the first ground contact 6 and the first ground contact 7 in this embodiment are located on the same plane and are arranged in parallel.

Specifically, referring to fig. 3, fig. 3 is an expanded schematic view of the antenna body in the embodiment of the present invention, the antenna body in the embodiment is integrated in a cavity of a housing by folding, that is, the antenna body covers an inner wall of the housing made of ABS material with a size of about 16 × 8 × 7mm, a rectangular thin frame in fig. 3 is a folding position, the first antenna body 2 is in a Pifa form and contacts with a corresponding position of the rf motherboard 4 after being assembled, and the second antenna body 3 is in a monopole form and contacts with a corresponding position of the rf motherboard 4 after being assembled.

For the isolation performance of the antenna in this embodiment, please refer to fig. 4 to fig. 6, where fig. 4 shows a return loss curve of the first antenna, fig. 5 shows a return loss curve of the second antenna, and fig. 6 shows the isolation between the first antenna and the second antenna, as shown in the figure, the main antenna and the auxiliary antenna have good resonance in the operating frequency band of 2.4-2.5GHz and 5.15-5.85GHz, the isolation between the main antenna and the auxiliary antenna is greater than 10dB for 2.4G, and the isolation between the main antenna and the auxiliary antenna is greater than 20dB for 5G.

For the efficiency of the antenna in the present embodiment, please refer to fig. 7 to fig. 10, where fig. 7 shows the first antenna 2.4G antenna efficiency, fig. 8 shows the first antenna 5G antenna efficiency, fig. 9 shows the second antenna 2.4G antenna efficiency, and fig. 10 shows the second antenna 5G antenna efficiency, as shown in the figure, the first antenna 2.4G and the first antenna 5G antenna efficiency are both around 30%; the 2.4G antenna efficiency of the second antenna is about 20 percent, and the 5G antenna efficiency is about 30 percent.

Another embodiment of the present invention provides an electronic device, as shown in fig. 1, including a radio frequency main board 4 and the antenna structure as described above.

Further, a contact corresponding to the contact portion is arranged on the radio frequency main board 4, the antenna structure is electrically connected with the contact through the contact of the contact portion and the contact, the contact is preferably a metal elastic sheet, that is, for the structure of the two antenna bodies, a first antenna feed elastic sheet (corresponding to the first feed contact portion 5), a first antenna grounding elastic sheet (corresponding to the first grounding contact portion 6) and a second antenna feed elastic sheet (corresponding to the second feed contact portion 7) are sequentially arranged at corresponding positions on the radio frequency main board 4, the first antenna body 2 is electrically connected with the radio frequency main board 4 through the first antenna feed elastic sheet and the first antenna grounding elastic sheet, and the second antenna body 3 is electrically connected with the radio frequency main board 4 through the second antenna feed elastic sheet.

Of course, the material of the metal spring is any one of copper, aluminum, iron, and silver, which is determined by the specific product design cost and performance, and is not described herein again.

The antenna structure and the electronic device provided by the embodiment of the utility model have the beneficial effects that at least one point in the following points is selected:

(1) the size is small: compared with the prior art, the space size of the antenna structure is only about 12 x 4 x 5mm, the expansion size is less than 8 x 30mm, and the size space of an antenna product is greatly reduced;

(2) the isolation is high: the 2.4G isolation of the two paths of antennas of the first antenna body and the second antenna body is greater than 10dB, the 5G isolation is greater than 20dB, and the isolation of the antennas is ensured while the size of a product is reduced;

(3) the antenna efficiency is high: the efficiency of the first antenna and the second antenna is about 30 percent, which is higher than that of products with the same size and specification, thereby reducing the size of the products and ensuring the working performance of the antennas;

(4) the consistency is good: the conformal shell body of the antenna is communicated with the main board through the elastic sheet, deformation risks are avoided, adaptability to assembly errors is high, and consistency is good.

(5) The assembly is simple: the antenna body is conformal with the shell, and assembly procedures are reduced.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An antenna structure, comprising a housing and at least two antenna bodies;

the other side of the cavity is attached with the antenna body;

2. The antenna structure of claim 1, wherein the antenna body comprises a first antenna body and a second antenna body;

the first antenna body is in Pifa form;

the second antenna body is in a monopole form.

3. The antenna structure of claim 2, wherein the first antenna body is provided with a first feed contact and a first ground contact; and a second feeding contact part is arranged on the second antenna body.

4. The antenna structure according to claim 3, characterized in that the first feed contact, the first ground contact and the first ground contact are all located in the same plane and are arranged in parallel.

5. The antenna structure of claim 1, wherein the housing is an ABS material.

6. An electronic device comprising a radio frequency main board and an antenna structure according to any one of claims 1 to 5.

7. The electronic device according to claim 6, wherein the rf main board is provided with a contact corresponding to the contact portion, and the antenna structure is electrically connected to the contact through the contact of the contact portion and the contact.

8. The electronic device of claim 7, wherein the contact is a metal dome.

9. The electronic device of claim 8, wherein the metal dome is made of any one of copper, aluminum, iron, and silver.

10. The electronic device of claim 9, wherein the metal spring comprises a first antenna feed spring, a first antenna ground spring, and a second antenna feed spring.