CN215644977U

CN215644977U - Satellite navigation anti-interference antenna device

Info

Publication number: CN215644977U
Application number: CN202121669235.1U
Authority: CN
Inventors: 汤晨芹; 袁卫忠; 唐凯
Original assignee: Hunan Tianyi Electronic Technology Co ltd
Current assignee: Hunan Tianyi Electronic Technology Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-01-25
Anticipated expiration: 2031-07-21

Abstract

The utility model discloses a satellite navigation anti-interference antenna device, which comprises: the PCB module is provided with a microstrip line; the antenna is arranged on the PCB module and used for receiving satellite signals; the radio frequency module is arranged on the PCB module, the antenna is connected with the radio frequency module through a microstrip line, and a metal shielding shell covers the radio frequency module; the radio frequency module is connected with the baseband module; and the baseband module is connected with the communication interface, and the communication interface is used for connecting other equipment. Adopt PCB board module to replace metal base, reduced weight to walk line and the microstrip line through PCB board module and replace special radio frequency coaxial feeder and can further reduce weight, effectively reduce unmanned platform load, promote its complete machine duration, can further improve unmanned platform's miniaturization degree. The impedance can be controlled by designing the PCB wiring, the matching is better, and the channel consistency of each antenna is better.

Description

Satellite navigation anti-interference antenna device

Technical Field

The utility model relates to the field of antennas, in particular to a satellite navigation anti-interference antenna device.

Background

Along with the popularization and application of unmanned platforms such as unmanned aerial vehicles, unmanned vehicles and unmanned ships in a large number, severe electromagnetic interference working environment is responded, the anti-interference capability of the antenna of the unmanned platform is very important, heavy metal or other special fixing seats are mostly adopted in the anti-interference antenna of the unmanned platform on the market, the weight is large, the cost is high, and the large-scale popularization and application are not convenient.

In the prior art, the anti-interference antenna is fixed through a special fixing plate, and the anti-interference antenna of the unmanned platform is connected with the anti-radio frequency processing module through a radio frequency coaxial feeder, so that the following defects exist:

1. the metal plate or other special supporting plates are used as the antenna fixing plate, so that the weight is large and the cost is high;

2. through coaxial cable feeder connection antenna and radio frequency board, the whole size of antenna is because of coaxial line and extension length, can't further miniaturize, and assembles the degree of difficulty in narrow and small space greatly.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an anti-interference antenna device for satellite navigation, which can solve the problems that the existing anti-interference antenna is heavy in weight, high in cost and incapable of being miniaturized.

The satellite navigation anti-interference antenna device according to the embodiment of the utility model comprises: the PCB module is provided with a microstrip line; the antenna is arranged on the PCB module and used for receiving satellite signals; the radio frequency module is installed on the PCB module, the antenna is connected with the radio frequency module through a microstrip line, and a metal shielding shell covers the radio frequency module; the radio frequency module is connected with the baseband module; and the baseband module is connected with the communication interface, and the communication interface is used for connecting other equipment.

The satellite navigation anti-interference antenna device provided by the embodiment of the utility model at least has the following technical effects: the embodiment of the utility model fixes the antenna, the radio frequency module and the baseband module through the PCB module, the antenna receives a radio frequency signal and sends the radio frequency signal to the radio frequency module through the microstrip line to be converted into a baseband signal, and then the radio frequency module sends the baseband signal to the baseband module to be processed into data information and then outputs the data information through the communication interface. Adopt PCB board module to replace metal base, reduced weight to walk line and the microstrip line through PCB board module and replace special radio frequency coaxial feeder and can further reduce weight, effectively reduce unmanned platform load, promote its complete machine duration, can further improve unmanned platform's miniaturization degree. The impedance can be controlled by designing the PCB wiring, the matching is better, and the channel consistency of each antenna is better.

According to some embodiments of the present invention, the PCB module includes a first PCB and a second PCB, the antenna and the rf module are located on the first PCB, the baseband module and the communication interface are located on the second PCB, and the first PCB and the second PCB are connected by a board connector.

According to some embodiments of the present invention, the antenna is located on an upper surface of the first PCB, the radio frequency module is located on a lower surface of the first PCB, the baseband module is located on a lower surface of the second PCB, an upper surface/inner layer of the first PCB is provided with a first metal shielding layer, and an upper surface/inner layer of the second PCB is provided with a second metal shielding layer.

According to some embodiments of the utility model, the panel connector is a plug-in panel connector.

According to some embodiments of the present invention, the number of the plug-in type panel connectors is not less than two, and the plug-in type panel connectors are disposed between the first PCB and the second PCB.

According to some embodiments of the utility model, the antenna is a helical antenna or a ceramic antenna.

According to some embodiments of the present invention, the number of the antennas is two or more, and the antennas are uniformly distributed on the PCB module.

According to some embodiments of the utility model, the antenna is a single frequency, dual frequency or multi-frequency antenna.

According to some embodiments of the present invention, the PCB module includes a first PCB, the antenna is located on the top of the first PCB, the rf module is located in the middle area of the bottom of the first PCB, the baseband module is located in the edge area of the bottom of the first PCB, and the rf module is connected to the baseband module through a PCB trace.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a first satellite navigation anti-interference antenna apparatus according to an embodiment of the present invention;

FIG. 2 is a bottom view of a first PCB board of a first satellite navigation anti-jamming antenna apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second satellite navigation anti-jamming antenna apparatus according to an embodiment of the present invention;

fig. 4 is a bottom view of a first PCB in a second satellite navigation anti-jamming antenna apparatus according to an embodiment of the present invention.

Reference numerals

The antenna comprises a PCB module 100, a microstrip line 110, a first PCB 120, a second PCB 130, a board connector 140, an antenna 200, a radio frequency module 300, a baseband module 400, and a communication interface 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

An anti-interference antenna device for satellite navigation, comprising: PCB board module 100, antenna 200, rf module 300, baseband module 400, and communication interface 500. The PCB module 100 is provided with a microstrip line 110, the antenna 200 is installed on the PCB module 100 for receiving satellite signals, the radio frequency module 300 is installed on the PCB module 100, the antenna 200 is connected with the radio frequency module 300 through the microstrip line 110, the radio frequency module 300 is covered with a metal shielding shell to shield the radio frequency module by 360 degrees, interference of the radio frequency signals to the baseband signals can be avoided, the radio frequency module 300 is connected with the baseband module 400, the baseband module 400 is connected with the communication interface 500, and the communication interface 500 is connected with an upper computer or other third-party equipment.

Example 1: referring to fig. 1, an antenna 200 is located on an upper surface of a first PCB 120, a radio frequency module 300 is located on a lower surface of the first PCB 120, a baseband module 400 is located on a lower surface of a second PCB 130, an upper surface or an inner layer of the first PCB 120 is provided with a first metal shielding layer, the first metal shielding layer on the upper surface should be located below the antenna 200, the upper surface or the inner layer of the second PCB 130 is provided with a second metal shielding layer, the first metal shielding layer and the second metal shielding layer are all monolithic copper plates, and the radio frequency signal received by the antenna can be prevented from affecting each signal processing unit below.

The first PCB 120 and the second PCB 130 are connected through the plate connector 140, so that each module on the first PCB 120 and the second PCB 130 can transmit signals through the plate connector 140, the plate connector 140 is a plug-in type plate connector in this embodiment, a connection cable can be omitted, the assembly is convenient, and the cable can be prevented from being damaged due to impact in the movement process.

Referring to fig. 2, the number of the plug-in type board connectors is two, and the two plug-in type board connectors are asymmetrically arranged between the first PCB 120 and the second PCB 130, and the wrong insertion can be prevented by adopting the asymmetrical arrangement. The antenna 200 is a helical antenna, a ceramic antenna or other types of antennas, and may be an integrated vertical antenna, or a threaded connection split antenna, the number of the antennas 200 may be two or more than two according to actual needs, and the antennas may be single-frequency, dual-frequency, or multi-frequency antennas.

The solid circle is a feeder pin at the center of the bottom of the antenna, the feeder pin is connected with the microstrip line 110, the hollow circle is a fixed pin at the periphery of the antenna feeder, and the fixed pin is connected with the signal ground.

Example 2: referring to fig. 3 and 4, the PCB module 100 includes a first PCB 120, the antenna 200 is located on the top of the first PCB 120, the rf module 300 is located in the middle area of the bottom of the first PCB 120, the baseband module 400 is located around the rf module 300, the rf module 300 is directly connected to the baseband module 400 through PCB traces, the communication interface 500 is disposed on the baseband module 400, similarly, the rf module 300 is covered with a metal shielding case, and the upper surface or the inner layer of the first PCB 120 is provided with a first metal shielding layer to avoid interference of the rf signal with the baseband signal.

The rf module 300 and the baseband module 400 are commercially available in conventional models.

The antenna 200 is a helical antenna or other types of vertical antennas, and may be an integrated vertical antenna or a threaded connection split antenna, the number of the antennas 200 may be two or more than two according to actual needs, and the antennas may be single-frequency, dual-frequency, or multi-frequency antennas.

The solid circle is a feeder pin at the center of the bottom of the antenna 200, the feeder pin is connected with the microstrip line 110, and the hollow circle is a fixed pin at the periphery of the feeder of the antenna 200, and the fixed pin is connected with a signal ground.

In conclusion, the embodiment of the utility model omits a heavy metal base and a special radio frequency coaxial feeder, can reduce the weight of the anti-interference antenna device to be below 400g, effectively reduces the load of the unmanned platform and improves the endurance of the whole unmanned platform. The microstrip line 110 is used for replacing a radio frequency coaxial feeder line of a traditional anti-interference antenna, impedance can be controlled by designing PCB wiring, matching is better, and the consistency of antenna channels is better. The radio frequency module 300 and the baseband module 400 are interconnected through the plug-in type plate connector, connecting cables are omitted, damage of the cables due to impact in the motion process of the unmanned platform can be avoided, the anti-interference antenna is simple in structure, and maintainability is better.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. An anti-jamming antenna device for satellite navigation, comprising:

the PCB comprises a PCB module (100), wherein a microstrip line (110) is arranged on the PCB module (100);

an antenna (200), the antenna (200) being mounted on the PCB board module (100) for receiving satellite signals;

the radio frequency module (300) is installed on the PCB module (100), the antenna (200) is connected with the radio frequency module (300) through a microstrip line (110), and a metal shielding shell covers the radio frequency module (300);

a baseband module (400), the radio frequency module (300) being connected to the baseband module (400);

the baseband module (400) is connected with the communication interface (500), and the communication interface (500) is used for connecting other devices.

2. The satellite navigation anti-jamming antenna device according to claim 1, characterized in that: the PCB module (100) comprises a first PCB (120) and a second PCB (130), the antenna (200) and the radio frequency module (300) are located on the first PCB (120), the baseband module (400) and the communication interface (500) are located on the second PCB (130), and the first PCB (120) and the second PCB (130) are connected through a plate connector (140).

3. The satellite navigation anti-jamming antenna device according to claim 2, characterized in that: the antenna (200) is located on the upper surface of the first PCB (120), the radio frequency module (300) is located on the lower surface of the first PCB (120), the baseband module (400) is located on the lower surface of the second PCB (130), the upper surface/inner layer of the first PCB (120) is provided with a first metal shielding layer, and the upper surface/inner layer of the second PCB (130) is provided with a second metal shielding layer.

4. The satellite navigation anti-jamming antenna device according to claim 2, characterized in that: the panel connector (140) is a plug-in panel connector.

5. The satellite navigation anti-jamming antenna device according to claim 4, characterized in that: two are no less than to the quantity of plug-in type plate connector, plug-in type plate connector sets up between first PCB board (120) and second PCB board (130).

6. The satellite navigation anti-jamming antenna device according to claim 1, characterized in that: the antenna (200) is a helical antenna or a ceramic antenna.

7. The satellite navigation anti-jamming antenna device according to claim 1, characterized in that: the number of the antennas (200) is more than two, and the antennas (200) are uniformly distributed on the PCB module (100).

8. The satellite navigation anti-jamming antenna device according to claim 1, characterized in that: the antenna (200) is a single, dual or multi-frequency antenna (200).

9. The satellite navigation anti-jamming antenna device according to claim 1, characterized in that: the PCB module (100) comprises a first PCB (120), the antenna (200) is located at the top of the first PCB (120), the radio frequency module (300) is located in the middle area of the bottom of the first PCB (120), the baseband module (400) is located in the edge area of the bottom of the first PCB (120), and the radio frequency module (300) is connected with the baseband module (400) through routing of the PCB.