KR101640518B1 - Dual-band signal a single antenna systems for satellite communications - Google Patents

Dual-band signal a single antenna systems for satellite communications Download PDF

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Publication number
KR101640518B1
KR101640518B1 KR1020160007187A KR20160007187A KR101640518B1 KR 101640518 B1 KR101640518 B1 KR 101640518B1 KR 1020160007187 A KR1020160007187 A KR 1020160007187A KR 20160007187 A KR20160007187 A KR 20160007187A KR 101640518 B1 KR101640518 B1 KR 101640518B1
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South Korea
Prior art keywords
feed horn
band feed
band
dual
reflector
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KR1020160007187A
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Korean (ko)
Inventor
유길상
강현일
조정연
김지혜
수토데 오미드
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주식회사 케이앤에스아이앤씨
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Priority to KR1020160007187A priority Critical patent/KR101640518B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288—Satellite antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The present invention relates to a moving frame (100) comprising a strut (120), a moving shaft (130) coupled to an upper surface of the strut (120) A Ku-band feed horn 210 and a Ka-band feed horn 220 which are spaced apart from each other in the left-right direction at a predetermined distance in front of the struts 120; A guide frame 300 disposed behind the upper surface of the strut 120 and having a guide groove 310 formed in the upper surface thereof with the moving shaft 130 inserted therein and being elongated in the left and right direction; And a ballscrew driving shaft 410 inserted into the guide groove 310 and elongated in the left and right direction and threadably inserted into the moving shaft 130. The driving shaft 410 is coupled to the outer surface of the guide frame 300, A motor 400; A dual offset reflector 520 which is coupled to the front of the cover 510 and reflects all the transmitted and received radio waves, and a Ku- Band feed horn 210 or the Ka-band feed horn 220 so that all the radio waves reflected by the dual offset reflector 520 are transmitted to the Ku-band feed horn 210 or the Ka-band feed horn 220 A sub reflector 530 for reflecting the light again, and a pair of connection plates 540 connecting both ends of the cover 510 in the left and right direction with the left and right ends of the sub reflector 530, respectively. Band feed horn 210 and the Ka-band feed horn 220 are moved in the lateral direction by driving the ball screw driving shaft 410 so that the sub reflector 530 Is disposed in front of the Ku-band feed horn 210 or the Ka-band feed horn 220, To a single-antenna system 1000 for satellite communication capable of dual-band signal transmission and reception.

Description

[0001] The present invention relates to a dual-band signal transmission system and a dual-

The present invention relates to a single antenna system for satellite communication capable of dual band signal transmission and reception and more particularly to a single antenna system for satellite communication capable of transmitting and receiving a Ku band radio wave and a Ka band radio wave in parallel, ≪ / RTI >

Generally, satellite communication is a communication or broadcasting service by emitting a satellite at a certain altitude above the earth. It is advantageous for communication between books, wallpaper, and mobile objects. In the case of satellite broadcasting, And can provide various services of high quality. A satellite communication system is divided into a space part related to a satellite, a ground part such as an antenna earth station and a control station installed on the ground, and a signal processing part regarding a signal, that is, a transmission method and a processing method of radio waves.

A satellite communication earth station is a terrestrial antenna facility that transmits and receives communication performance results, and basically consists of a transmitter, a receiver, and an earth station antenna. Typically, the antenna system for satellite communication includes a King Post type antenna, a Yoke & Tower type antenna, a Wheel On Track type antenna, a Beam Wave Guide type antenna , And a dual offset type antenna mounted on a vehicle. Also, a large-diameter parabola is used as the main reflector, and a cassegrain antenna composed of a sub-reflector and a primary radiator of a rotation hyperbola is mainly used. The reflector of the antenna system for satellite communication is assembled in various forms such as dish type, ADE type or slot type .

Meanwhile, as the frequency band of the antenna system for satellite communication is depleted in the Ku band frequency band (reception 10.7GHz ~ 12.75GHz / transmission 13.75GHz ~ 14.5GHz), which is widely used in the world, Ka band frequency band (receiving 19.2GHz 21.2 GHz / transmission 29-31 GHz). Satellite technology has also been developed, and OBP (On-Board Processing) or Switching Matrix has been installed in the satellite to improve the performance of the satellite link. Development of the technology has made it possible to develop compact, low-cost, high-performance earth stations.

Currently, an antenna system for satellite communication using Ku band propagation and Ka band is being developed in response to the frequency band depletion problem of the Ku band.

However, in the conventional antenna system for satellite communication, when transmitting and receiving the Ka-band and Ku-band waves in parallel, two different antennas are required.

Therefore, it is necessary to develop various antenna communication systems for solving the above-mentioned problems.

A related art is a sub reflector which reflects a radiation wave of a dielectric feed horn to a dual offset reflector during transmission and reflects a radio wave received from a dual offset reflector to a dielectric feed horn at the time of reception in Korean Patent No. 1230591; A dual offset reflector that reflects a radio wave reflected from the sub reflection plate at the time of transmission to the air and reflects a radio wave received from the air at the time of reception to the sub reflection plate; The dual offset reflector is installed at the center of the dual offset reflector to support and fix the sub reflector through a dielectric and combine the X-band transmit signal and the Ku (or Ka) band transmit signal into one feed horn, A dielectric feed horn for dividing a dual band reception signal received from the sub reflector into an X band and a Ku (or Ka) band; A gyro sensor for sensing the yaw (azimuth) angle of the antenna, rolling (right and left tilt angle), and pitch (elevation) posture; An angle sensor for sensing the yaw (azimuth) angle of the antenna, rolling (right and left tilt angle), and pitch (tilt angle); A yaw (azimuth) motor for controlling the yaw axis attitude of the antenna according to the control signal; A rolling motor for controlling a rolling posture of the antenna according to a control signal; A pitch motor for controlling a pitch attitude of the antenna according to a control signal; And an antenna control means for controlling the yaw motor, the rolling motor, and the pitch motor so that the antenna tracks the satellite by sensing the attitude and angle of the antenna from the gyro sensor and the angle sensor. A satellite communication antenna system has been proposed.

Korean Patent No. 1230591 (Jan. 31, 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dual-band signal transmission and reception system capable of transmitting and receiving Ku-band and Ka- And to provide a single antenna system for communication.

A single antenna system 1000 for satellite communication capable of dual band signal transmission and reception according to the present invention includes a strut 120 and a moving frame 100 including a moving shaft 130 coupled to an upper surface of the strut 120, ; A Ku-band feed horn 210 and a Ka-band feed horn 220 which are spaced apart from each other in the left-right direction at a predetermined distance in front of the struts 120; A guide frame 300 disposed behind the upper surface of the strut 120 and having a guide groove 310 formed in the upper surface thereof with the moving shaft 130 inserted therein and being elongated in the left and right direction; And a ballscrew driving shaft 410 inserted into the guide groove 310 and elongated in the left and right direction and threadably inserted into the moving shaft 130. The driving shaft 410 is coupled to the outer surface of the guide frame 300, A motor 400; A dual offset reflector 520 which is coupled to the front of the cover 510 and reflects all the transmitted and received radio waves, and a Ku- Band feed horn 210 or the Ka-band feed horn 220 so that all the radio waves reflected by the dual offset reflector 520 are transmitted to the Ku-band feed horn 210 or the Ka-band feed horn 220 A sub reflector 530 for reflecting the light again, and a pair of connection plates 540 connecting both ends of the cover 510 in the left and right direction with the left and right ends of the sub reflector 530, respectively. Band feed horn 210 and the Ka-band feed horn 220 are moved in the lateral direction by driving the ball screw driving shaft 410 so that the sub reflector 530 Is disposed in front of the Ku-band feed horn 210 or the Ka-band feed horn 220, .

The single antenna system 1000 for satellite communication capable of transmitting and receiving signals of the dual band is coupled to the upper surface of the moving shaft 130 and includes depressed grooves 320 formed in the left and right direction on the upper rear surface of the guide frame 300 And a hook-shaped sliding restriction guide 600 inserted in the hook-shaped guide groove.

The single antenna system 1000 for satellite communication capable of transmitting and receiving signals of the dual band includes a pair of hinge shafts 710 hinged to the pair of connection plates 540, A rotation unit 700 including a rotation unit for rotating the shaft 710; And a lower radome 800 coupled to a lower end of the hinge shaft 710 and having a wire connecting hole 810 formed at a central axis thereof.

In addition, the single antenna system 1000 for satellite communication capable of transmitting and receiving signals of the dual band is mounted on a vehicle.

Accordingly, the single antenna system for satellite communication capable of transmitting and receiving dual band signals according to the present invention has an advantage of transmitting and receiving the transmitted and received Ku-band propagation and Ka-band propagation in a single device in parallel .

1 and 2 are perspective views illustrating a single antenna system for satellite communication capable of dual band signal transmission and reception according to the present invention.
3 to 4 are perspective views showing a moving frame, a Ku-band feed horn, a Ka-band feed horn, a guide frame, and a drive motor according to the present invention.
5 is a perspective view showing a radio wave reflector according to the present invention.
FIG. 6 is an operation diagram of a single antenna system for satellite communication capable of dual band signal transmission and reception according to the present invention.
FIG. 7 is an operation diagram showing a state in which a sub-reflector plate is disposed in front of a Ku-band feed horn in a single antenna system for satellite communication capable of transmitting and receiving dual band signals according to the present invention.
FIG. 8 is an operation diagram showing a state in which a sub-reflector plate is disposed in front of a Ka-band feed horn in a single antenna system for satellite communication capable of transmitting and receiving dual band signals according to the present invention.

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

1 to 2 are perspective views showing a single antenna system for satellite communication capable of transmitting and receiving dual band signals according to the present invention, FIGS. 3 to 4 are perspective views showing a mobile frame, a Ku-band feed horn, a Ka- FIG. 5 is a perspective view showing a radio wave reflector according to the present invention, FIG. 6 is an operation diagram of a single antenna system for satellite communication capable of transmitting and receiving a dual band signal according to the present invention, FIG. FIG. 7 is an operation diagram illustrating a state in which a sub-reflector plate is disposed in front of a Ku-band feed horn in a single antenna system for satellite communication capable of transmitting and receiving dual band signals according to the present invention. An operation diagram showing a state in which a sub reflector is disposed in front of a Ka-band feed horn in a single antenna system for satellite communication capable of transmitting and receiving signals The.

1 to 6, a single antenna system 1000 for satellite communication capable of transmitting and receiving dual band signals according to the present invention includes a mobile frame 100, a Ku-band feed horn 210, a Ka- A band feed horn 220, a guide frame 300, a drive motor 400, a radio wave reflector 500, and a connection frame.

The moving frame 100 includes a strut 120 and a moving shaft 130.

At this time, the moving shaft 130 is coupled to the upper surface of the strut 120 so as to protrude rearward, and screw holes are formed through the screw shaft in the left and right direction.

The Ku-band feed horn 210 and the Ka-band feed horn 220 are spaced apart from each other in the left-right direction in front of the strut.

In addition, the Ku-band feed horn 210 collects Ku-band propagation waves among all the waves reflected by the wave reflector 500, and removes noise and noise signals of the propagation waves.

In addition, the Ka-band feed horn 220 collects Ka-band propagation waves among all the waves reflected from the wave reflector 500, and removes noises and noise signals of the propagation waves.

The guide frame 300 is formed with guide grooves 310 in which the moving shaft 130 is inserted in front of the upper surface and the guide grooves 310 are elongated in the left and right direction.

The driving motor 400 includes a ballscrew driving shaft 410 which is inserted into the guide groove 310 and is elongated in the left and right direction and is inserted into the moving shaft 130 through a through- . At this time, when the ball screw driving shaft 410 is driven, the moving frame 100 including the moving shaft 130 screwed to the ball screw driving shaft 410 and the Ku coupled to the moving frame 100 The band-feed horn 210 and the Ka-band feed horn 220 move in the left-right direction.

The radio wave reflector 500 includes a cover 510, a dual offset reflector 520, a sub reflector 530, and a connection plate 540.

The cover 510 is coupled to the outer surface of the guide frame 300.

The dual offset reflector 520 is coupled to the front of the cover 510 and reflects all the radio waves (including the Ka band and Ku band waves) transmitted and received from the outside toward the sub reflector 530 . At this time, the dual offset reflector 520 is formed as a curved plate so that the wave is reflected well.

The sub reflector 530 is disposed in front of the Ku-band feed horn 210 or the Ka-band feed horn 220 so that all the radio waves reflected by the dual offset reflector 520 are reflected by the Ku- Band feed horn 210. When the Ku-band feed horn 210 is disposed in front of the Ku-band feed horn 210, all the waves reflected by the dual offset reflector 520 are reflected by the Ku- Band feed horn 220 and reflects all the waves reflected by the dual offset reflector 520 to the Ka-band feed horn 220. The Ka- do. At this time, the sub reflection plate 530 is formed into a curved plate so that the wave is reflected well.

The pair of connection plates 540 connects both ends of the cover 510 in the left and right direction with both ends of the sub reflection plate 530 in the left and right directions.

6, the moving frame 100 including the moving shaft 130 screwed to the ball screw driving shaft 410 by driving the ball screw driving shaft 410 and the moving frame 100 Band feed horn 210 and the Ka-band feed horn 220 coupled to the Ku-band feed horn 210 and the Ka-band feed horn 220 are all moved in the lateral direction, And is disposed in front of the sub reflector 530.

7, when the Ku-band feed horn 210 is disposed in front of the sub reflection plate 530, the radio waves reflected from the dual offset reflection plate 520 to the sub reflection plate 530 are reflected by the Ku 8, when the Ka-band feed horn 220 is disposed in front of the sub reflector 530, the dual offset reflector 520 emits the sub- The radio waves reflected by the reflection plate 530 are transmitted to the Ka-band feed horn 220.

That is, the single antenna system 1000 for satellite communication capable of transmitting and receiving dual band signals according to the present invention is capable of transmitting and receiving the transmitted and received Ku band radio waves and Ka band radio waves in a single device in parallel .

The single antenna system 1000 for satellite communication capable of transmitting and receiving dual band signals according to the present invention controls driving of the ball screw driving shaft 410 of the driving motor 400 and controls the position of the sub reflector 530 And a PCU (not shown) including a position sensor for grasping the position sensor.

In addition, the single antenna system 1000 for satellite communication capable of transmitting and receiving dual band signals according to the present invention may further include a sliding limiting guide 600.

The sliding limiting guide 600 is coupled to the upper surface of the moving shaft 130 and is inserted into the recessed groove 320 formed in the left and right direction on the upper rear surface of the guide frame 300 and is formed into a hook shape.

At this time, the sliding limiting guide 600 restricts the lateral movement width of the movable frame 100 to the lateral width of the recessed groove 320.

It is preferable that the width of the depressed grooves 320 is equal to or larger than the width of the Ku-band feed horn 210 and the Ka-band feed horn 220 in the left-right direction.

The single antenna system 1000 for satellite communication capable of transmitting and receiving dual band signals according to the present invention may further include a rotation unit 700 and a lower radome 800.

The rotary unit 700 is for adjusting the angle of the wave reflector 500 and includes a pair of hinge shafts 710 hinged to the pair of connection plates 540, And a rotating means for rotating the shaft 710.

At this time, the rotating means may be constituted by an electric motor that automatically rotates the pair of hinge shafts 710. The electronic motor is controlled to rotate by the PCU, and the PCU adjusts the angle of the reflector 500 to the best angle at which the geostationary satellite can communicate using the electronic motor.

The supporting shaft is coupled to the lower end of the hinge shaft 710, and a wire connecting hole 810 is formed in the center shaft.

At this time, the electric wire connecting hole 810 may be provided with various electric wires for connecting the driving motor 400, the PCU, and the electric motor, which need electric power, to an external power source.

In addition, the single antenna system 1000 for satellite communication capable of transmitting and receiving dual band signals according to the present invention can be installed in a vehicle.

Meanwhile, the single antenna system 1000 for satellite communication capable of transmitting and receiving dual band signals according to the present invention may further include a Ku-band automatic polarization switching device (not shown).

Band feed horn 210 and the Ka-band feed horn 220. The automatic polarization switching device is installed in the Ku-band feed horn 210 and the Ka-band feed horn 220, And converts the signal into a linear polarization or a circular polarization.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1000: Single antenna system for satellite communication capable of dual band signal transmission and reception according to the present invention
100: Moving frame
120: holding
130:
210: Ku-band feed horn
220: Ka-band feed horn
300: guide frame
310: guide groove
320: recessed groove
400: drive motor
410: Ballscrew drive shaft
500: radio wave reflector
510: cover
520: Dual offset reflector
530: sub-
540: connection plate
600: Guide to limiting sliding
700:
710: Hinge shaft
800: Lower radome
810: Wire connection hole

Claims (4)

A moving frame (100) including a strut (120) and a moving shaft (130) coupled to an upper surface of the strut (120);
A Ku-band feed horn 210 and a Ka-band feed horn 220 which are spaced apart from each other in the left-right direction at a predetermined distance in front of the struts 120;
A guide frame 300 disposed behind the upper surface of the strut 120 and having a guide groove 310 formed in the upper surface thereof with the moving shaft 130 inserted therein and being elongated in the left and right direction;
And a ballscrew driving shaft 410 inserted into the guide groove 310 and elongated in the left and right direction and threadably inserted into the moving shaft 130. The driving shaft 410 is coupled to the outer surface of the guide frame 300, A motor 400;
A dual offset reflector 520 which is coupled to the front of the cover 510 and reflects all the radio waves transmitted and received; Band feed horn 210 or the Ka-band feed horn 220 so that all the radio waves reflected from the dual offset reflector 520 are transmitted to the Ku-band feed horn 210 or the Ka-band feed horn 220 again A reflector 500 including a pair of connection plates 540 connecting left and right ends of the cover 510 with the left and right ends of the sub reflector 530; And
And a claw-shaped sliding limiting guide 600 coupled to an upper surface of the moving shaft 130 and inserted into a depressed groove 320 formed in the left and right direction of the upper surface of the guide frame 300,
When the movable frame 100, the Ku-band feed horn 210 and the Ka-band feed horn 220 move in the lateral direction by driving the ball screw drive shaft 410, Band feed horn 210 or the Ka-band feed horn 220. The single antenna system 1000 for satellite communication is capable of transmitting and receiving dual band signals.
delete The system of claim 1, wherein the single antenna system (1000) for satellite communication capable of transmitting and receiving dual band signals comprises:
A pair of hinge shafts 710 hinged to the pair of connecting plates 540, and a turning unit 700 including a pair of hinge shafts 710 for rotating the pair of hinge shafts 710; And
And a lower radome (800) coupled to a lower end of the hinge shaft (710) and having a wire connecting hole (810) formed at a central axis thereof. Antenna system (1000).
The system of claim 1, wherein the single antenna system (1000) for satellite communication capable of transmitting and receiving dual band signals comprises:
A single antenna system (1000) for satellite communication capable of transmitting and receiving a dual band signal, the system being mounted on a vehicle.
KR1020160007187A 2016-01-20 2016-01-20 Dual-band signal a single antenna systems for satellite communications KR101640518B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101686570B1 (en) * 2016-09-06 2016-12-14 한만기 Device and method for providing smart satelite internet zone using multi band antenna for satellite communication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010036922A (en) * 1999-10-12 2001-05-07 박종섭 Method and apparatus for controlling a sub-reflecter in an antenna
KR20100127045A (en) * 2009-05-25 2010-12-03 (주)하이게인안테나 3 band tracking antenna for satellite communication
KR101057507B1 (en) * 2009-06-05 2011-08-17 (주)인텔리안테크놀로지스 Multi-band signal transmission and reception apparatus and multi-band signal transmission method using the device
KR101230591B1 (en) 2011-03-10 2013-02-15 이승호 Dual band satellite communication antenna system for sea

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010036922A (en) * 1999-10-12 2001-05-07 박종섭 Method and apparatus for controlling a sub-reflecter in an antenna
KR20100127045A (en) * 2009-05-25 2010-12-03 (주)하이게인안테나 3 band tracking antenna for satellite communication
KR101057507B1 (en) * 2009-06-05 2011-08-17 (주)인텔리안테크놀로지스 Multi-band signal transmission and reception apparatus and multi-band signal transmission method using the device
KR101230591B1 (en) 2011-03-10 2013-02-15 이승호 Dual band satellite communication antenna system for sea

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101686570B1 (en) * 2016-09-06 2016-12-14 한만기 Device and method for providing smart satelite internet zone using multi band antenna for satellite communication

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