KR100592403B1 - Satellite antenna using reflector plate of mobile station - Google Patents

Abstract

The present invention relates to an antenna for a satellite using a fuselage of a mobile station as a reflector, and includes a fuselage roof of a mobile station used as a reflector for reflecting satellite signals received from a satellite and a reflector that is reflected through a reflector that is a fuselage roof of the mobile station. A λ / 2 length helical dipole antenna unit for receiving a helical antenna, a helical antenna unit coupled to a center, and an element portion 1/10 λ diameter for receiving a satellite signal transmitted from a satellite, and coupled to an element unit for insulation function An insulating part to be carried out, a reflecting plate coupled to the insulating part, insulated from the element part, and bonded to the fuselage roof of the mobile station to reflect satellite signals received from the satellite, and shielded with an iron plate to adhere to the fuselage roof of the mobile station, To convert the satellite signal input through the low noise amplification and the intermediate frequency signal Outputting the LNA, the plated magnet for attaching the satellite antenna to the fuselage roof of the mobile station while performing the grounding function attached to the LNA, and outputting the intermediate frequency signal converted from the LNA to the satellite signal receiver located inside the mobile station. It is characterized in that it comprises a coaxial cable for a high-speed, consisting of a λ 1/2 length helical dipole antenna unit for receiving the satellite signal reflected by the body of the mobile station as a reflector and a 1/10 λ diameter element portion for receiving the satellite signal By implementing the gain omni-directional antenna, it is possible to easily receive satellite signals from satellites.

Satellite, omni-directional antenna, reflector

Description

ANTENNA FOR SATELLITE USING MOVILE BODY IN REFLECTED PLATE}

1 is a view showing a state where a conventional satellite antenna is installed in a vehicle.

2 is a view showing a state where the satellite antenna is installed in a vehicle according to the present invention.

Figure 3 is a view showing in detail the state in which the satellite antenna is installed on the vehicle roof according to the present invention using the vehicle body as a reflector.

Figure 4 is an overall cross-sectional view of an antenna for a satellite using the fuselage of the mobile station according to the present invention as a reflector.

<Description of Symbols for Main Parts of Drawings>

10: vehicle antenna for satellite 11: helical dipole antenna unit

12 element part 13 insulation part

14: reflector 15: LNA

16: magnet 17: coaxial cable

18: storage case 20: vehicle roof

30: satellite

The present invention relates to an antenna for satellites using the body of a mobile station as a reflector, and in particular, a ½ length helical dipole antenna unit for receiving a reflected satellite signal using the body of the mobile station as a reflector. By implementing a high-gain omni-directional antenna consisting of an element part of 1/10 λ diameter that directly receives satellite signals, the body of the mobile station is used as a reflector to easily receive satellite signals from satellites. It relates to an antenna for satellites.

In general, a satellite antenna for a vehicle is a device for receiving data transmitted from a satellite, a navigation device for providing information necessary for driving a vehicle such as a road situation, and a satellite broadcast reception for receiving a satellite broadcast. Used for the device.

The satellite antenna of a conventional vehicle is a patch antenna as shown in FIG. 1, and a flat antenna 1 mainly comprises a flat antenna 1. The flat antenna 1 is connected to a vehicle roof 2 through an attachment means such as a magnet. Removably fixed), the position and direction is rotated by the drive of the motor to receive satellite signals in the 1.4 ~ 12GHz band from the satellite.

As described above, the conventional satellite antenna is a motor for adjusting the position and direction of the antenna according to the moving direction of the mobile station to enable communication with the satellite during the movement when installed in a mobile station, such as a train, ship, plane, etc. Although separate electronic equipment, such as a motor driving unit, is used, the electronic equipment is very expensive and has a disadvantage in that it is not only economically expensive but also uncomfortable due to noise caused by driving of the motor.

In addition, when the satellite antenna uses a microstrip, a complex feeding structure is required and a large number of small power amplifiers are required, such that the overall structure for enhancing the reception and gain characteristics of the antenna is complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is 1/2 λ in length, and a satellite signal is directly received from a helical dipole antenna unit and satellites for receiving and receiving a satellite signal reflected by using a fuselage of a mobile station as a reflector. By implementing a high-gain omni-directional antenna consisting of a disk-shaped element part having a diameter of 1 / 10λ, it is possible to easily receive satellite signals from satellites, and at this time, the structure is simple and the position and direction of the antenna are adjusted. It is to provide an antenna for satellites using the fuselage of a mobile station which is economically advantageous, such as cost savings, as it does not require a separate electronic equipment for the purpose.

The satellite antenna using the fuselage of the mobile station of the present invention as a reflector for achieving the above object is a fuselage roof of the mobile station used as a reflector for reflecting satellite signals received from the satellite, and a reflector plate which is the fuselage roof of the mobile station. A helical dipole antenna having a length of 1/2 lambda that absorbs and receives a satellite signal reflected through the disk, and is formed in a disk shape, and the helical antenna unit is coupled to the center of the disk shape and directly receives a satellite signal transmitted from the satellite. An element having a diameter of 1/10 lambda receiving, an insulation portion coupled to the element portion to perform an insulation function, an insulation portion coupled to the insulation portion, insulated from the element portion, and bonded to a fuselage roof of the mobile station to receive from the satellite And a reflector reflecting the satellite signal, and the fuselage roof of the mobile station. A LNA shielded by an iron plate and converting a satellite reception signal input through the reflector into a low noise amplification and intermediate frequency signal, and attached to the LNA to perform a grounding function while attaching a satellite antenna to the fuselage roof of the mobile station. And a coaxial cable for outputting the intermediate frequency signal converted by the LNA to a satellite signal receiver located inside the mobile station.

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the satellite antenna using the fuselage of the mobile station of the present invention as a reflector.

2 is a view illustrating a state in which a satellite antenna according to the present invention is installed in a vehicle, wherein the satellite vehicle antenna 10 is attached to the vehicle body of the vehicle roof 20 through a magnet in a storage case and is detachably fixed to the vehicle body; In this case, the vehicle roof 20, that is, the vehicle body made of metal is used as a reflector for reflecting satellite signals received from satellites.

The satellite reception signal reflected by the reflector is absorbed and received through the helical dipole antenna unit expressed outside the storage case of the satellite vehicle antenna 10.

In the present invention, as shown in Figure 2, but the satellite antenna for use in a vehicle of the mobile station, such as a vehicle, train, ship, plane, etc. are described as an example, the fuselage of the mobile station in any mobile station, such as trains, ships, airplanes, That is, the antenna for the satellite of the non-directional characteristic can be implemented by using the metal roof as a reflector.

3 is a view illustrating in detail a state in which the satellite antenna according to the present invention is installed on the vehicle roof to use the vehicle body as a reflector, and FIG. 4 is an overall cross-sectional view of the satellite antenna using the fuselage of the mobile station according to the present invention as a reflector.

As shown in FIG. 3, the satellite antenna of the vehicle 10, which is fixedly installed in the middle of the vehicle roof 20 and uses the vehicle roof 20 as a reflector, is reflected through the reflector that is the vehicle roof 20. A helical dipole antenna unit 11 for receiving a signal, a coaxial cable 17 for connecting the satellite vehicle antenna 10 to a satellite signal receiver located inside the vehicle, and a satellite signal transmitted from the satellite 30. And a storage case 18 in which an element part (not shown) for directly receiving the light is received, and a vehicle roof 20 performing a reflecting plate function.

In more detail, as shown in FIG. 4, the vehicle antenna 10 for satellites has a 1/2 lambda length helical dipole antenna unit 11 for receiving and receiving a satellite signal reflected through a reflector that is a vehicle roof 20. And an element part 12 having a diameter of 1/10 lambda which is formed in a disk shape and the helical antenna part 11 is coupled to the center of the disk shape and directly receives a satellite signal transmitted from the satellite 30. The insulating part 13 is coupled to the element part 12 to perform an insulating function, and the insulating part 13 is coupled to the insulating part 13 to be insulated from the element part 12, and is bonded to the vehicle body of the vehicle roof 20 so that the satellite ( 30 reflects a satellite signal received from the satellite signal, and a low noise amplifier (LNA) for converting the satellite signals received through the reflector 14 into low noise amplification and intermediate frequency signals. 15) and the LNA (1). 5) a plated magnet 16 for attaching the satellite vehicle antenna 10 to the vehicle roof 20 and a medium frequency signal converted by the LNA 15 while performing a grounding function. A coaxial cable 17 for outputting to a satellite signal receiver located therein and a vehicle antenna 10 for satellites are attached and fixed through the magnet 16 to reflect satellite signals received from the satellite 30. It consists of a vehicle roof 20 used as a reflector for.

In this case, the LNA 15 may be bonded to the vehicle body of the vehicle roof 20 through the magnet 16 by shielding with an iron plate.

And the storage case 18 is accommodated in order to protect the said element part 12, the insulation part 13, the reflecting plate 14, the LNA 15, the magnet 16, and the coaxial cable 17 from the exterior. .

Referring to the operation of the satellite vehicle antenna 10 according to the present invention configured as described above, first, the element portion 12 having a diameter of 1 / 10λ in the form of a disk with a satellite signal reflected through the reflecting plate 14 The satellite signal transmitted from the satellite 30 is directly received.

In addition, the helical dipole antenna unit 11 having a length of 1/2 lambda absorbs and receives a satellite reception signal having a short wavelength reflected from the vehicle roof 20.

That is, the satellite signal received from the satellite 30 is reflected through the vehicle roof 20, that is, the vehicle body, which is a reflector, and is absorbed and received by the helical dipole antenna unit 11.

As described above, the satellite signal directly received through the element unit 12 and the satellite signal indirectly received through the helical dipole antenna unit 11 are added together, thereby increasing the gain of the antenna as a whole.

Then, when the combined satellite signal is output to the LNA 15 through the reflector 14, the LNA 15 converts the satellite signal into an intermediate frequency signal that can be received by a satellite signal receiver located inside the vehicle and at the same time makes noise. After the removal, the impedance is matched to the coaxial cable 17 to be output to the satellite signal receiver.

As described above, in the present invention, the element part 12 which directly receives the satellite signal from the satellite 30 together with the insulator 13 and the reflector 14 and the vehicle roof 20, i.e., the fuselage of the mobile station are used as the reflector. By using the helical dipole antenna unit 11 that absorbs and receives the reflected satellite signal, a satellite for a satellite having an omnidirectional characteristic with a reception area in a horizontal direction of 360 ° is implemented to adjust the position and direction of the antenna. There is no need for electronic equipment, and the gain is also high, making satellite signals easy and accurate.

In particular, the gain of the satellite antenna using the body of the mobile station according to the present invention as a reflector is about 6dB, one antenna is sufficient for DMB (Digital Multimedia Broadcasting) or DAB (Digital Audio Broadcasting) reception, DVB (Digital) In case of video broadcasting, it is possible to increase the gain by arranging several antennas.

As described above, the present invention has a high gain including a 1/2 lambda length helical dipole antenna unit for receiving the reflected satellite signal using the body of the mobile station as a reflector and an element portion 1/10 lambda diameter for directly receiving the satellite signal. By implementing the omnidirectional antenna of the antenna, it is possible to easily receive satellite signals from satellites.

In addition, the structure is simpler than the conventional flat antenna using microstrip, and it is not only convenient to use but also cost-saving because it does not need a separate electronic equipment for adjusting the position and direction of the antenna. There is an economic advantage.

Claims (1)

A fuselage roof of a mobile station used as a reflector for reflecting satellite signals received from satellites; A helical dipole antenna having a length of 1/2 lambda for receiving a satellite signal reflected through a reflector that is a fuselage roof of the mobile station; An element portion 1/10 lambda diameter coupled to the center of the helical antenna unit for receiving a satellite signal transmitted from the satellite; An insulation part coupled to the element part to perform an insulation function; A reflector coupled to the insulator and insulated from the element, and reflecting satellite signals received from the satellite by adhering to the fuselage roof of the mobile station; An LNA shielded by an iron plate to bond to the fuselage roof of the mobile station, and converting the satellite signal received through the reflector into low noise amplification and an intermediate frequency signal; A plated magnet for attaching the satellite antenna to the fuselage roof of the mobile station while being attached to the LNA and performing a grounding function; And a coaxial cable for outputting the intermediate frequency signal converted by the LNA to a satellite signal receiver located inside the mobile station.

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