CN213660622U

CN213660622U - Novel high-precision integrated antenna

Info

Publication number: CN213660622U
Application number: CN202023329013.3U
Authority: CN
Inventors: 卢林生; 刘小燕; 刘锦萍
Original assignee: Shenzhen Xinwei Communication Technology Co ltd
Current assignee: Shenzhen Xinwei Communication Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-07-09
Anticipated expiration: 2030-12-30

Abstract

The utility model belongs to the technical field of the GNSS antenna, a novel high accuracy integrated antenna is disclosed, be provided with the PCB board, GNSS antenna unit, communication antenna unit, GNSS radio frequency circuit unit closes the way unit, the coaxial cable of radio frequency, shell etc.. The novel-scheme high-precision antenna integrates a communication antenna, one antenna and a transmission cable are reduced, system design and installation are simplified, and cost is saved. In addition, the antenna with the new scheme integrates structures such as the mounting rod and the like on the bottom shell of the antenna, so that the mounting size and the cost are greatly reduced. The high integration of each unit, EMI problem obtains fine control, and GNSS reception performance can improve, and system stability can improve.

Description

Novel high-precision integrated antenna

Technical Field

The utility model belongs to the technical field of the GNSS antenna, especially, relate to a novel integrated antenna of high accuracy.

Background

At present, with the development of the internet of things technology, the application of the GNSS (Global Navigation Satellite System) high-precision positioning technology is increasingly wider, such as agricultural tractors, high-precision mapping of unmanned aerial vehicles, plant protection, electric power line patrol, unmanned aerial vehicle performance and logistics application, in order to realize high-precision positioning, a GNSS high-precision positioning subsystem and a communication subsystem are all included, so that most high-precision equipment comprises a GNSS antenna and a communication antenna (WIFI/4G and the like).

The traditional GNSS high precision and communication antenna are separated, and each subsystem has the condition of multiple antennas, so that the cost is high, the size is large, and the influence of signal mutual interference is difficult to meet the demand of further miniaturization of system equipment.

Through the above analysis, the problems and defects of the prior art are as follows:

the system has the advantages of large quantity of antennas, large volume, heavy weight, high cost and complex installation;

the number of antennas is large, the number of ports connected by radio frequency is large, and the reliability of port connection is low;

the stability of the system is influenced by the EMI problem caused by improper antenna installation position for a long time, and satellite searching, locking losing, positioning losing and the like can be caused by EMI interference in serious cases;

the GNSS antenna is installed through the screw and the magnet sucker, and is large in size, heavy in weight and high in cost.

The difficulty in solving the above problems and defects is:

the problem of signal compatibility between each unit and the antenna unit needs to be solved: because the GNSS signal is very weak (generally-135 dBm to-120 dBm) to the ground, the signal is easy to be interfered, so that the signal distortion or the satellite loss is caused, the transmission power of a communication system is high, the GNSS signal is especially easy to be interfered, and the problem that the communication antenna and the GNSS antenna signal are not interfered with each other needs to be solved through various technologies;

after the communication antenna and the GNSS antenna are integrated, the complexity and the cost of the system can be further reduced by using a single cable to transmit signals, so that the problem of combined transmission of GNSS weak signals and communication system strong signals is also solved.

In order to meet the requirement of system miniaturization, a miniaturized and highly reliable mounting structure design needs to be integrated on an antenna product.

The significance of solving the problems and the defects is as follows:

after the GNSS antenna and the communication antenna are integrated, the number of antenna units is reduced, and the material, installation and maintenance costs are reduced; the size and the weight of a system product are reduced, and the product performance use experience is improved;

after the GNSS antenna and the communication antenna are integrated, the number of signal connection ports is greatly reduced, the design complexity of the system is reduced, and the running reliability of the system is improved;

after the GNSS antenna and the communication antenna are integrated, the influence of signals between systems is greatly reduced to an acceptable level, and the system performance is not deteriorated due to the changes of the antenna state, the installation position and the like;

after the antenna product is integrated with a miniaturized and highly reliable mounting structure, the size, cost and weight of the system are reduced, and the use experience of product performance is improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a novel high-precision integrated antenna.

The embodiment of the utility model is realized in such a way that a novel high-precision integrated antenna is provided with a PCB board, and an antenna unit for receiving GNSS signals is arranged on the PCB board;

the GNSS radio frequency unit is connected with the antenna unit and is used for realizing phase synthesis, filtering and low-noise amplification processing;

the GNSS radio frequency unit is connected with a port 1 of a combining unit for combining the GNSS signals and the communication signals through a microstrip line.

The PCB is also provided with a communication antenna unit for receiving and transmitting communication signals;

and the communication antenna unit is connected with a port 2 of a combining unit for combining the GNSS signals and the communication signals through a microstrip line.

The combining unit combines the GNSS signals and the communication signals and then is connected with the radio frequency coaxial cable through the 3 ports of the combining unit so as to realize the integration of the GNSS antenna and the communication antenna and the combined transmission of the GNSS radio frequency signals and the communication radio frequency signals.

In addition, the utility model discloses still disclose embodiment two, the difference with embodiment one is not the way unit of combining, and direct radio frequency cable 1 is connected behind the GNSS signal radio frequency unit, and communication antenna unit is connected with radio frequency cable 2 to realize that GNSS antenna and communication antenna are integrated, GNSS radio frequency signal and communication radio frequency signal are the transmission along separate routes.

The embodiment 1 and the embodiment 2 are both designed with a shell, the bottom of the shell is provided with a thread mounting structure, a polygonal structure for mounting is arranged above the thread, and the mounting structure and the polygonal structure are metal pieces, so that the outdoor and indoor simple mounting and reliable mounting are ensured. Preferably, the polygonal structure is mountable using a conventional wrench.

Further, in order to improve the outdoor use reliability of the product, the radio frequency cable penetrates through the mounting structure at the bottom of the shell to ensure that the transmission cable is arranged inside the shell.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:

(1) after the GNSS antenna and the communication antenna are integrated, the number of antenna units is reduced, and the material, installation and maintenance costs are reduced; the size and the weight of a system product are reduced, and the product performance use experience is improved;

(2) after the GNSS antenna and the communication antenna are integrated, the number of signal connection ports is greatly reduced, the design complexity of the system is reduced, and the running reliability of the system is improved;

(3) after the GNSS antenna and the communication antenna are integrated, the influence of signals between systems is greatly reduced to an acceptable level, and the system performance is not deteriorated due to the changes of the antenna state, the installation position and the like;

(4) after the antenna product is integrated with a miniaturized and highly reliable mounting structure, the size, cost and weight of the system are reduced, and the use experience of product performance is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic view of an embodiment 1 of the present invention, which provides a novel high-precision integrated antenna.

Fig. 2 is a schematic diagram of embodiment 2 of the novel high-precision integrated antenna provided by the embodiment of the present invention.

Fig. 3 is a schematic diagram of a novel high-precision integrated antenna combining unit provided by the embodiment of the present invention.

In the figure: 1. a communication antenna unit; 2. an upper cover of the shell; 3. a GNSS antenna unit; 4. a PCB board; 5. a radio frequency unit; 6. a housing base; 7. a mounting structure on the housing base; 8. a radio frequency cable; 9. and a combining unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

To the problem that prior art exists, the utility model provides a novel high accuracy integrated antenna, it is right to combine the figure below the utility model discloses do detailed description.

This light novel high accuracy integrated antenna embodiment 1 includes PCB board 4, GNSS antenna unit 3, communication antenna unit 1, GNSS radio frequency circuit unit 5, closes way unit 9, radio frequency coaxial cable 8, shell upper cover 2 and shell base 6, and shell base 6 has assembled metal mounting structure 7 etc..

The GNSS antenna unit 3 is connected with the GNSS radio frequency circuit unit 5, the GNSS radio frequency circuit unit is connected with the port 1 of the combining unit 9, the communication antenna unit 1 is connected with the port 2 of the combining unit 9, and the port 3 of the combining unit 9 is connected with the radio frequency coaxial line 8, so that the combined transmission of the GNSS antenna and the communication antenna unit is realized;

the GNSS antenna unit 3, the GNSS radio frequency circuit unit 5, the combiner unit 9, the communication antenna unit 1 and the radio frequency coaxial line 8 are all mounted on the PCB4, so as to ensure small transmission loss and stable signal transmission;

the circle centers of the communication antenna unit 1, the GNSS antenna unit 3 and the PCB4 are overlapped, so that the sufficient signal isolation between the communication antenna and the GNSS antenna is ensured.

The metal mounting structure 7 is assembled on the outer shell base 6, the metal mounting structure 7 is provided with a thread mounting structure, a polygonal structure for tool mounting is arranged above the thread, the thread mounting structure and the polygonal mounting structure are metal pieces, and the polygonal structure can be mounted by using a conventional wrench.

The radio frequency cable 8 passes through the metal mounting structure 7 of the housing 6 to ensure that the transmission cable is located inside the housing. The number of radio frequency cables may be one or more.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. A novel high-precision integrated antenna is characterized by being provided with a PCB (printed Circuit Board), a GNSS (Global navigation satellite System) antenna unit, a communication antenna unit, a GNSS radio frequency circuit unit, a combiner unit and a radio frequency coaxial cable;

the GNSS antenna unit is connected with the GNSS radio frequency circuit unit, and the GNSS radio frequency circuit unit is connected with one port of the combiner unit; the communication antenna unit is connected with the other port of the combining unit; and the port of the combining unit is connected with the radio frequency coaxial cable.

2. The high-precision integrated antenna according to claim 1, wherein the high-precision integrated antenna is further provided with a housing, the bottom of the housing is provided with a threaded mounting structure, a polygonal structure for mounting is arranged above the threads, and the mounting structure and the polygonal structure are made of metal pieces.

3. A highly accurate integrated antenna according to claim 2, characterized in that said polygonal structure can be mounted with a conventional wrench.

4. The high-precision integrated antenna according to any one of claims 1 or 2, wherein the communication antenna unit coincides with a center of a circle of the GNSS antenna unit, the PCB board, and the housing.

5. A novel high-precision integrated antenna is characterized by being provided with a PCB (printed Circuit Board), a GNSS (Global navigation satellite System) antenna unit, a communication antenna unit, a GNSS radio frequency circuit unit and a radio frequency coaxial cable;

the GNSS antenna unit is connected with the GNSS radio frequency circuit unit, the GNSS radio frequency circuit unit is connected with the radio frequency coaxial line, and the communication antenna unit is connected with the other radio frequency coaxial line.

6. A novel highly accurate integrated antenna as claimed in claim 5, characterized in that, said novel highly accurate integrated antenna is further provided with a housing.

7. A highly accurate integrated antenna according to claim 2 or claim 6, characterized in that the radio frequency cable passes through the bottom mounting structure of the housing.