WO2018228122A1

WO2018228122A1 - Antenna structure

Info

Publication number: WO2018228122A1
Application number: PCT/CN2018/087083
Authority: WO
Inventors: 宁舒曼
Original assignee: 西安中兴新软件有限责任公司
Priority date: 2017-06-14
Filing date: 2018-05-16
Publication date: 2018-12-20
Also published as: CN109088176A

Abstract

An antenna structure, the structure being applied to a terminal, and the structure comprising: a support frame, a dielectric filling area, and an antenna array, which are located inside the terminal; the dielectric filling area is disposed within the support frame, and the antenna array is disposed in the dielectric filling area, the antenna array being connected to a main board of a printed circuit board (PCB) of the terminal by means of a feed point.

Description

Antenna structure

Technical field

This document relates to, but is not limited to, antenna technology, and more particularly to an antenna structure.

Background technique

As an important radio in the communication system, the performance of the antenna will directly affect the performance of the radio. With the development of communication technology, research on the fifth generation mobile communication technology (5G, 5th-Generation) has also begun. The 5G network is a densely distributed base station network with a higher base station distribution density than the previous mobile system network. Moreover, the base station and the terminal use a 28 GHz millimeter wave band for communication. The antenna system of the base station adopts a phased array antenna system, so that the beam can be cross-polarized in both vertical and horizontal directions to achieve higher user density and increase system user capacity. The 5G terminal has the capability of a self-selected base station, and can select a base station and a channel with a low bit error rate to communicate according to the error rate of the base station.

In order to achieve these functions, the 5G antenna system relies on array antenna technology, and both the base station and the terminal use a millimeter-wave phased array antenna. Taking the terminal as an example, the antenna array of the terminal may be an n×n dot matrix.

For millimeter-band antennas, due to the high operating frequency and wide bandwidth, the size of the antenna array is small, and because the wavelength of the antenna is short, the requirements of the antenna for the surrounding environment and even the weather and other weather conditions are compared. Strict.

At present, for the implementation of the 5G antenna, a module with a radio frequency chip is generally preferred, and since the specific implementation of the antenna is an array antenna in the form of a dot matrix, and the antenna unit 301 in the array is small in size and densely distributed, If each antenna unit 301 in the antenna array is connected to the RF chip through a shielded wire, the manufacturing process can be complicated.

Summary of the invention

The following is an overview of the topics detailed in this document. This summary is not intended to limit the scope of the claims.

Embodiments of the present invention are directed to providing an antenna structure and a terminal for implementing connection between an antenna array and a radio frequency chip.

In a first aspect, an embodiment of the present invention provides an antenna structure, where the antenna is applied to a terminal, and the antenna structure includes: a support frame, a dielectric filling area, and an antenna array inside the terminal; wherein, the support frame is The dielectric filling area is disposed therein, and the antenna array is disposed in the dielectric filling area, and the antenna array is connected to the printed circuit board PCB main board of the terminal through a feeding point.

In the above solution, the support frame inside the terminal is a lightweight metal structural member for supporting and fixing each component of the terminal.

In the above solution, the inner side of the frame edge of the support frame is a hollow semi-cylindrical structure, and the thickness of the dielectric filling region is the same as the thickness of the hollow portion inside the frame edge of the support frame, so that the dielectric filled region It can be connected to the inner side of the frame edge of the support frame and closely fits with the support frame.

In the above solution, the dielectric filling region is snapped inside the frame edge of the support frame, or the dielectric filling region is connected to the inner edge of the support frame by bonding.

In the above aspect, the dielectric filling region is connected to the inner side of the frame edge of the support frame corresponding to the top position of the terminal.

In the above solution, the antenna array includes 16 antenna elements, and the antenna elements are arranged in a 4×4 square matrix form.

The wavelength of the electromagnetic wave that needs to be radiated.

In the above solution, the radiation unit is divided into two radiation regions in the form of mirror symmetry, and the two radiation units in each radiation region are mirror-symmetrical; and in each radiation region, the two radiation units are mirror-imaged to each other. The two symmetrical antenna elements are connected by an electrical connection line, and a feed point is disposed at the center of the antenna array, and all the electrical connection lines are connected to the feed point.

In the above solution, the support frame is disposed between the terminal touch screen and the PCB main board, and is connected to the PCB main board through the feed point.

In a second aspect, the embodiment of the present invention further provides a terminal, the terminal comprising: a touch screen, a printed circuit board PCB main board, and an antenna structure according to any one of the first aspects.

The embodiment of the invention provides an antenna structure; the dielectric filling area is disposed in the support frame, which can reduce the installation space of the antenna array, and does not affect the support performance of the support frame, and is not affected by the environment of the PCB main board; In addition, the connection of the antenna array to the PCB main board of the terminal is realized, and it is not necessary to set corresponding shielding lines for each antenna unit in the antenna array, and then the shielded lines are connected to the RF chip on the PCB main board. , simplifying the production process.

BRIEF abstract

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

2 is a schematic structural diagram of a dielectric filling region and a support frame edge according to an embodiment of the present invention;

3 is a schematic structural diagram of an antenna array according to an embodiment of the present invention;

4 is a side view of a dielectric filled region according to an embodiment of the present invention;

FIG. 5 is a side view of a terminal assembly according to an embodiment of the present invention.

Embodiments of the invention

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

Referring to the antenna structure shown in FIG. 1, the array antenna structure involved in the embodiment of the present invention may be applied to a terminal, and the antenna structure may include: a support frame 10 inside the terminal, a dielectric filling area 20, and an antenna array 30; The dielectric filling region 20 is disposed in the support frame 10, such as the dielectric filling region 20 disposed on the frame edge of the support frame 10, and the antenna array 30 is disposed in the dielectric filling region 20. The antenna array 30 is connected to the printed circuit board (PCB) of the terminal through the feed point 40.

For the structure shown in FIG. 1 , it should be noted that the support frame 10 inside the terminal may be an aluminum alloy material or other lightweight metal structural members for supporting and fixing each component of the terminal. The non-metallic material filled in the dielectric filled region 20 may be the substrate material on which the antenna array 30 is placed, thereby being used for the implementation of the antenna array 30.

It can be seen from the above that the dielectric filling region 20 is disposed on the frame edge of the support frame 10, which can reduce the installation space of the antenna array 30, and has no influence on the support performance of the support frame 10, and is not affected by the PCB main board environment; In addition, since the present embodiment realizes the connection with the PCB main board of the terminal through the feed point 40 of the antenna array 30, it is not necessary to set a corresponding shield line for each antenna unit 301 in the antenna array 30, and then pass these shielded lines. The connection to the RF chip on the PCB board simplifies the manufacturing process.

For the technical solution shown in FIG. 1 , in one embodiment, the inner side of the frame edge of the support frame 10 is a hollow semi-cylindrical structure, the thickness h of the dielectric filling region 20 and the frame of the support frame 10 . The thickness H of the hollow portion inside the edge is the same, as shown in FIG. 2, so that the dielectric filling region 20 can be connected to the inner side of the frame edge of the support frame 10, and closely fits with the support frame 10, that is, The inside of the frame edge of the support frame 10 has no gap contact with the dielectric filling region 20. Thereby, the dielectric filling region 20 can be fixedly attached inside the frame edge of the support frame 10. Specifically, the dielectric filling region 20 may be snapped inside the frame edge of the support frame 10, or may be connected to the inner side of the edge of the support frame 10 by bonding or other connection.

It should be noted that due to the short operating wavelength of the millimeter wave, the antenna array 30 has strict requirements on the surrounding environment and even foreign objects such as rain, snow and fog. Therefore, with the above embodiment, the dielectric filling region 20 may be connected to the inner side of the frame edge of the support frame 10 corresponding to the top position of the terminal.

For the technical solution shown in FIG. 1, in another embodiment, referring to FIG. 3, the antenna array 30 includes 16 antenna units 301, and the antenna units 301 can be arranged in a 4×4 square matrix.

It should be noted that when the antenna elements 301 are arranged in a square array form, the length dimension of the array is reduced compared with the linear array, and the square matrix form has the same symmetry as the circular array, and the symmetry can be used to reduce the steering vector. The amount of computation, but the square matrix is simpler than the circular array.

For the antenna array 30 shown in FIG. 3, the antenna unit 301 in the antenna array 30 can be divided into 4 radiation units in a 2×2 square matrix form, as described by the broken line frame in FIG. The size is

Where λ represents the wavelength of the electromagnetic wave that the array antenna needs to radiate.

It should be noted that, as shown in FIG. 3, the size of each radiating element is the distance between adjacent antenna elements 301 in the radiating unit.

For the antenna array 30 shown in FIG. 3, the radiating element can be divided into two radiating regions in a mirror-symmetrical form, as shown by the dashed line frame in FIG. 3, and the two radiating elements in each radiating region are mirror-symmetric. And in each of the radiation regions, the two antenna elements 301 which are mirror-symmetrical to each other in the two radiation units are connected by electrical connection lines, as shown by the black lines in FIG. 3, and in the antenna array 30 The center of the feed point 40 is set and all the electrical connection lines are connected to the feed point 40.

It should be noted that by electrically connecting the antenna units 301 to each other and connecting all the electrical connections to the feed point 40, it is possible to avoid passing all the antenna elements 301 through the shielded wires corresponding thereto to realize the PCB. The connection of the RF chip in the motherboard reduces the manufacturing process.

For the technical solution shown in FIG. 1 , in an optional implementation manner, referring to the side view of the dielectric filling region 20 shown in FIG. 4 , it can be seen that the antenna array 30 is connected to the PCB main board through the feeding point 40 and connected. The method may include: connecting through a coaxial cable, connecting through a flexible printed circuit (FPC), or connecting through a metal dome.

For the technical solution shown in FIG. 1 , in an optional implementation manner, referring to the terminal assembly side view shown in FIG. 5 , the support frame 10 is generally disposed between the terminal touch screen and the PCB main board in the terminal, through the feeding point. Connected to the PCB motherboard.

The embodiment of the invention further provides a terminal, which comprises a touch screen, a PCB main board and an antenna structure described in the foregoing embodiments.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only an alternative embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

The embodiment of the invention can reduce the installation space of the antenna array, and does not affect the support performance of the support frame, and is not affected by the environment of the PCB main board; in addition, the connection between the antenna array and the radio frequency chip is realized, and the antenna is not needed. Each antenna unit in the array is provided with a corresponding shielding line, which avoids the connection between the shielding board and the RF chip on the PCB main board, which simplifies the manufacturing process.

Claims

An antenna structure, the antenna is applied to a terminal, the antenna structure includes: a support frame, a dielectric filling area, and an antenna array inside the terminal; wherein the dielectric filling area is disposed in the support frame, The antenna array is disposed in the dielectric filling area, and the antenna array is connected to the printed circuit board PCB main board of the terminal through a feed point.
The antenna structure according to claim 1, wherein the support frame inside the terminal is a lightweight metal structural member for supporting and fixing each component of the terminal.
The antenna structure according to claim 1, wherein a inner side of the frame edge of the support frame is a hollow semi-cylindrical structure, and a thickness of the dielectric filling region is the same as a thickness of a hollow portion inside the frame edge of the support frame. In order to enable the dielectric filled region to be connected to the inside of the frame edge of the support frame and to closely mate with the support frame.
The antenna structure according to claim 3, wherein the dielectric filling region is snapped inside the frame edge of the support frame, or the dielectric filling region is bonded to the inner edge of the support frame by bonding connection.
The antenna structure according to claim 1, wherein said dielectric filling region is connected to an inner side of a frame edge of a support frame corresponding to said top position of said terminal.
The antenna structure of claim 1 wherein said antenna array comprises 16 antenna elements, said antenna elements being arranged in a 4 x 4 square matrix.
The antenna structure according to claim 6, wherein the antenna elements in the antenna array are divided into 2 radiating units according to a 2×2 square matrix, and the size of each radiating unit is
Where λ represents the wavelength of the electromagnetic wave that the array antenna structure needs to radiate.
The antenna structure according to claim 7, wherein the radiating element is divided into two radiating regions in a mirror-symmetrical form, and two radiating elements in each radiating region are mirror-symmetrical; and in each radiating region, two are Two antenna elements that are mirror-symmetrical to each other in the radiating elements are connected by electrical connection lines, and feed points are disposed at the center of the antenna array, and all electrical connection lines are connected to the feed points.
The antenna structure according to claim 1, wherein the support frame is disposed between the terminal touch screen and the PCB main board, and is connected to the PCB main board through the feed point.
A terminal comprising: a touch screen, a printed circuit board PCB main board, and an antenna structure according to any one of claims 1 to 9.