CN213936539U

CN213936539U - Vehicle-mounted combined antenna for realizing multi-antenna MIMO (multiple input multiple output) by adopting discrete structure

Info

Publication number: CN213936539U
Application number: CN202023251121.3U
Authority: CN
Inventors: 郑亮; 林飞; 李晓鹏; 唐长虹
Original assignee: Hi Target Surveying Instruments Co ltd
Current assignee: Hi Target Surveying Instruments Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-08-10
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses an adopt discrete architecture to realize multi-antenna MIMO's on-vehicle combination antenna, including box body and antenna device, the quantity of box body is two, and two box bodies are used for setting up two positions departments at the car top, and antenna device sets up inside two box bodies respectively, and antenna device electric connection has 5G MIMO antenna output and V2X antenna output, and 5G MIMO antenna output and V2X antenna output can be followed the box body inside and extended to the box body outside. The utility model discloses can integrate more antennas, can increase the distance between the antenna, be favorable to avoiding the mutual interference between radiation disturbance and the antenna, be favorable to increasing communication rate and throughput.

Description

Vehicle-mounted combined antenna for realizing multi-antenna MIMO (multiple input multiple output) by adopting discrete structure

Technical Field

The utility model relates to an on-vehicle combination antenna especially relates to an adopt discrete architecture to realize multi-antenna MIMO's on-vehicle combination antenna.

Background

The MIMO (Multiple-Input Multiple-Output) technology is to use a plurality of transmitting antennas and receiving antennas at a transmitting end and a receiving end, respectively, so that signals are transmitted and received through the plurality of antennas at the transmitting end and the receiving end, thereby improving communication quality.

The vehicle-mounted antenna is mainly applied to the automobile industry, the traditional vehicle-mounted antenna mainly provides positioning/navigation and broadcast receiving functions, and the appearance of the traditional vehicle-mounted antenna mainly adopts a pigtail antenna/a short-rod antenna or a shark fin type. However, with the continuous development of mobile communication technology, the internet of vehicles will become a big trend in the future, and in order to bring higher security and convenience to users, the vehicle-mounted antenna should meet the requirements of 4G/5G mobile communication and V2X internet of vehicles communication. Both 5G mobile communications and V2X car networking communications require MIMO support, meaning that more antennas need to be integrated while maintaining high isolation and low correlation between antennas. However, the integration level of the conventional vehicle-mounted antenna is not high, the integration quantity of the communication antenna is small, and the requirements of 5G communication and vehicle networking communication cannot be met. In addition, the existing vehicle-mounted antenna is limited in size, and the internal layout of the antenna is unreasonable, so that some radiation interference and mutual interference among the antennas are easily caused, and the performance of the antenna is further influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an adopt discrete architecture to realize multi-antenna MIMO's on-vehicle combination antenna, can integrate more antennas, can increase the distance between the antennas, be favorable to avoiding the mutual interference between radiation interference and the antenna, be favorable to increasing communication rate and throughput.

The purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides an adopt discrete architecture to realize multi-antenna MIMO's on-vehicle combination antenna, includes box body and antenna device, the quantity of box body is two, and two box bodies are used for setting up two positions departments at the car top, antenna device sets up inside two box bodies respectively, antenna device electric connection has 5G MIMO antenna output and V2X antenna output, 5G MIMO antenna output and V2X antenna output can be followed the box body inside and extended to the box body outside.

Further, the box body comprises a shell and a bottom plate, the antenna device is arranged inside the shell, and the bottom plate covers an opening inside the shell.

Further, the antenna device includes a main board, a first 5G MIMO antenna, a second 5G MIMO antenna, and a V2X antenna, the main board being located on the inside of the housing, the first 5G MIMO antenna being disposed on the inside of the housing, the second 5G MIMO antenna being disposed on the main board, the V2X antenna being disposed on the main board;

the number of the 5G MIMO antenna output ends is two, and the two 5G MIMO antenna output ends are respectively a first 5G MIMO antenna output end and a second 5G MIMO antenna output end, the first 5G MIMO antenna output end penetrates through the shell to be electrically connected with the first 5G MIMO antenna, and the second 5G MIMO antenna output end penetrates through the shell to be electrically connected with the second 5G MIMO antenna; the output end of the V2X antenna penetrates through the shell to be electrically connected with the V2X antenna.

Further, the first 5G MIMO antenna is a full band antenna.

Furthermore, the first 5G MIMO antenna includes a first low-frequency radiation portion, a first intermediate-frequency radiation portion, a first high-frequency radiation portion, and a first feed-in portion, where the first low-frequency radiation portion is bent and forms a gap with the first intermediate-frequency radiation portion, a gap is formed between the first high-frequency radiation portion and the first low-frequency radiation portion, and the first feed-in portion is used for being connected to a feed-in source.

Further, the second 5G MIMO antenna is a 5G band antenna.

Further, the second 5G MIMO antenna includes a second intermediate frequency radiation part, a second high frequency radiation part, and a second feed-in part, the second intermediate frequency radiation part being etched on a top surface of the motherboard; the second high-frequency radiation part is etched on the bottom surface of the main board, the second feed-in part is used for being connected to a feed-in source, and the second intermediate-frequency radiation part and the second high-frequency radiation part are overlapped and mutually coupled.

Further, the first 5G MIMO antenna and the second 5G MIMO antenna are perpendicular to each other.

Further, the V2X antenna includes a V2X radiating part, a V2X feeding part and a V2X grounding part, the V2X radiating part is placed on the top surface of the motherboard, the V2X feeding part is used for connecting to a feeding source, and the V2X grounding part is grounded through the ground plane of the motherboard.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) the antenna devices are respectively arranged in the two separated boxes, so that the distance between the antennas is increased, and the problem of poor isolation caused by too close distance between the antennas in the prior art is solved;

(2) compared with the structure of only one box body in the prior art, the utility model discloses can integrate more antennas and realize MIMO, increase communication rate and throughput;

(3) the number of the antennas integrated by a single box body is reduced, the size of the box body can be reduced, and the antenna is installed on the roof of a vehicle without influencing the appearance and the wind resistance.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention, in which a discrete structure is adopted to implement a multi-antenna MIMO vehicle-mounted combined antenna;

fig. 2 is an exploded schematic diagram of an embodiment of the present invention, in which a discrete structure is adopted to implement a multi-antenna MIMO vehicle-mounted combined antenna;

fig. 3 is a schematic structural diagram of a main board in an embodiment of the present invention;

in the figure: 1. a housing; 2. a base plate; 3. a main board; 4. a first 5G MIMO antenna; 40. a first low-frequency radiation section; 41. a first intermediate frequency radiation section; 42. a first high-frequency radiation section; 5. a second 5G MIMO antenna; 6. a V2X antenna; 7. a first 5G MIMO antenna output; 8. a second 5G MIMO antenna output; 9. V2X antenna output.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1-3, the embodiment of the utility model provides an adopt discrete architecture to realize many antennas MIMO's on-vehicle combination antenna, including box body and antenna device, the quantity of box body is two, and two box bodies are used for setting up two positions department at the top of the automobile (there is the certain distance between two positions), and each box body is inside all to be equipped with an antenna device, and the equal electric connection of each antenna device has 5G MIMO antenna output and V2X antenna output 9, and 5G MIMO antenna output and V2X antenna output 9 can extend to the box body outside from the box body inside.

On the basis of above-mentioned structure, through setting up two box bodys respectively in two corners of car top, all be equipped with an antenna device in each box body inside to greatly increased the distance between the antenna, reduced the antenna quantity of single casing simultaneously, such overall arrangement mode has increased the isolation between the antenna, has reduced the correlation between the antenna, makes the volume reduction of single box body simultaneously. In addition, the antenna device is electrically connected with the 5G MIMO antenna output end and the V2X antenna output end 9, so that the vehicle-mounted combined antenna of the embodiment can meet the requirements of 5G mobile communication and V2X vehicle networking communication.

As a preferred embodiment in this embodiment, the box body includes a housing 1 and a bottom plate 2, the antenna device is disposed inside the housing 1, and the bottom plate 2 covers an opening inside the housing 1, so that the antenna device can be fixed inside the housing 1.

In the present embodiment, the housing 1 and the base plate 2 are connected by screws.

Specifically, each antenna device includes a main board 3, a first 5G MIMO antenna 4, a second 5G MIMO antenna 5, and a V2X antenna 6, the main board 3 is located on the inside of the case 1, the first 5G MIMO antenna 4 is disposed inside the case 1, the second 5G MIMO antenna 5 is disposed on the main board 3, and the V2X antenna 6 is disposed on the main board 3.

In the present embodiment, the main board 3 is preferably a PCB board.

More specifically, the number of the 5G MIMO antenna output terminals is two, which are respectively a first 5G MIMO antenna output terminal 7 and a second 5G MIMO antenna output terminal 8, the first 5G MIMO antenna output terminal 7 passes through the housing 1 to be electrically connected to the first 5G MIMO antenna 4, and the second 5G MIMO antenna output terminal 8 passes through the housing 1 to be electrically connected to the second 5G MIMO antenna 5; the V2X antenna output 9 passes through the housing 1 and is electrically connected to the V2X antenna 6.

In a preferred embodiment, the first 5G MIMO antenna 4 is a full-band antenna, and supports all bands of a domestic 2G/3G/4G/5G network.

It should be noted that the first 5G MIMO antenna 4 includes a first low-frequency radiation part 40, a first intermediate-frequency radiation part 41, a first high-frequency radiation part 42, and a first feed-in part, where the first low-frequency radiation part 40 is bent and forms a gap with the first intermediate-frequency radiation part 41, a gap is formed between the first high-frequency radiation part 42 and the first low-frequency radiation part 40, and the first feed-in part is used for connecting to a feed-in source. Therefore, the first low-frequency radiation part 40 is bent to form a gap with the first intermediate-frequency/first high-frequency radiation part, so that the space occupied by the first low-frequency radiation part 40 can be reduced, and the first low-frequency radiation part is coupled with the first intermediate-frequency/first high-frequency radiation part to generate more resonances, and the working bandwidth of the antenna is increased.

In a preferred embodiment, the second 5G MIMO antenna 5 is a 5G band antenna, and is formed by etching on the main board 3.

Specifically, the second 5G MIMO antenna 5 includes a second intermediate frequency radiation section, a second high frequency radiation section, and a second feed-in section, the second intermediate frequency radiation section being etched on the top surface of the main board 3; the second high-frequency radiation part is etched on the bottom surface of the main board 3, the second feed-in part is used for connecting to a feed-in source, and the second intermediate-frequency radiation part and the second high-frequency radiation part are overlapped and mutually coupled. Therefore, the occupied space can be greatly reduced by etching the second intermediate frequency radiation part and the second high frequency radiation part on the main board 3, and the second intermediate frequency radiation part and the second high frequency radiation part are coupled to generate more resonances, so that the working bandwidth of the antenna is increased.

It is worth mentioning that the first 5G MIMO antenna 4 is placed along the long side of the housing 1 and the second 5G MIMO antenna 5 is placed along the wide side of the housing 1. The first 5G MIMO antenna 4 and the second 5G MIMO antenna 5 in the same box body are arranged in a mutually perpendicular mode, so that the polarization directions are perpendicular, the isolation between the antennas is increased, and the correlation between the antennas is reduced.

In a preferred embodiment, the operating frequency band of the V2X antenna 6 is 5.85GHz to 5.925 GHz.

In addition, the V2X antenna 6 includes a V2X radiating part, a V2X feed part and a V2X ground part, the V2X radiating part is placed on the top surface of the main board 3, the V2X feed part is used for connecting to a feed source, and the V2X ground part is grounded through the ground plane of the main board 3. Thus, the V2X antenna 6 horizontal plane pattern is omnidirectional, increasing V2X communication coverage capability.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides an adopt discrete architecture to realize multi-antenna MIMO's on-vehicle combination antenna which characterized in that: including box body and antenna device, the quantity of box body is two, and two box bodies are used for setting up two positions departments at the car top, antenna device sets up inside two box bodies respectively, antenna device electric connection has 5G MIMO antenna output and V2X antenna output, 5G MIMO antenna output and V2X antenna output can be followed the box body inside and extended to the box body outside.

2. The combined antenna for vehicle implementing multi-antenna MIMO with a discrete architecture as claimed in claim 1, wherein: the box body comprises a shell and a bottom plate, the antenna device is arranged inside the shell, and the bottom plate covers an opening inside the shell.

3. The combined antenna for vehicle implementing multi-antenna MIMO with a discrete architecture as claimed in claim 2, wherein: the antenna device comprises a mainboard, a first 5G MIMO antenna, a second 5G MIMO antenna and a V2X antenna, wherein the mainboard is positioned on the inner part of the shell, the first 5G MIMO antenna is arranged on the inner side of the shell, the second 5G MIMO antenna is arranged on the mainboard, and the V2X antenna is arranged on the mainboard;

4. The combined antenna for vehicle implementing multi-antenna MIMO with a discrete architecture as claimed in claim 3, wherein: the first 5G MIMO antenna is a full-band antenna.

5. The combined antenna for vehicle implementing multi-antenna MIMO with a discrete architecture as claimed in claim 4, wherein: the first 5G MIMO antenna comprises a first low-frequency radiation part, a first intermediate-frequency radiation part, a first high-frequency radiation part and a first feed-in part, wherein the first low-frequency radiation part is bent and forms a gap with the first intermediate-frequency radiation part, a gap is formed between the first high-frequency radiation part and the first low-frequency radiation part, and the first feed-in part is used for being connected to a feed-in source.

6. The combined antenna for vehicle implementing multi-antenna MIMO with a discrete architecture as claimed in claim 3, wherein: the second 5G MIMO antenna is a 5G frequency band antenna.

7. The combined antenna for vehicle implementing multi-antenna MIMO with a discrete architecture as claimed in claim 6, wherein: the second 5G MIMO antenna comprises a second intermediate frequency radiation part, a second high frequency radiation part and a second feed-in part, and the second intermediate frequency radiation part is etched on the top surface of the mainboard; the second high-frequency radiation part is etched on the bottom surface of the main board, the second feed-in part is used for being connected to a feed-in source, and the second intermediate-frequency radiation part and the second high-frequency radiation part are overlapped and mutually coupled.

8. The combined antenna for vehicle implementing multiple antenna MIMO with a discrete architecture as claimed in any one of claims 3 to 7, wherein: the first 5G MIMO antenna and the second 5G MIMO antenna are perpendicular to each other.

9. The combined antenna for vehicle implementing multi-antenna MIMO with a discrete architecture as claimed in claim 3, wherein: the V2X antenna comprises a V2X radiating part, a V2X feed part and a V2X grounding part, wherein the V2X radiating part is placed on the top surface of a mainboard, the V2X feed part is used for being connected to a feed source, and the V2X grounding part is grounded through the grounding surface of the mainboard.